Tesi sul tema "MACA"
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Reyes, de la Cruz Vilma Julia. "Determinación de aflatoxinas y ocratoxinas en la maca seca y harina de maca (Lepidium meyenii walp)". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2006. https://hdl.handle.net/20.500.12672/2580.
Testo completoIt has been determined the concentration of total aflatoxin, A ochratoxin in dried maca (Lepidium meyenii walp) and maca flour and the physicochemical and microbiological factors affecting their production. It has been collected samples from 4 productive communities and 4 main markets. Extrinsic factors such as temperature and relative humidity are 10oC y 52,5% in communities and 15 oC y 71% in markets which are favourable conditions for growing Fusarium avenaceum, Penicillium corylophylum, P.commune, P.chrysogenum, Aspergilus níger, A.flavus, A.ochraceus, esclerotia de A.flavus, Rizophus and yeasts. It was determined total aflatoxin content average (0,8295 µg/Kg), which indicates the good quality of dried maca and A ochratoxin content average (8,703 ppb), which exceeds the permissible maximum limit given by USL 123/2005. The factors affecting A ocratoxin production are reducing sugars and pH. Total fungi average is 50x102 cfu/g but is not a factor affecting this mycotoxin. The community samples had higher concentrations of A ochratoxin and total fungi than the market samples. In maca flour, total aflatoxin content average is 12, 4528 ppb in which the toasted flour in bulk from the Central market in Lima had the highest content and the main influential factors are humidity, pH and acidity, while A ochratoxin content average is 2,8916ppb, in which the flour from Chupaca had the highest concentration and the main influential factors are reducing sugars and pH. On the other hand, the number of fungi in maca flour is 78 x 102 cfu/g affecting total Aflatoxin but not A ocratoxin production.
Tesis
Lobaton, Erazo Margarita Eva. "Micronutrientes en Lepidium meyenii. W (Maca - Maca) y actividad en sujetos con anemia ferropénica e hiperlipidemia". Master's thesis, Universidad Nacional Mayor de San Marcos, 1998. https://hdl.handle.net/20.500.12672/6308.
Testo completoTesis
Esparza, Eliana, Antonella Hadzich e Eric Cosio. "Maca: the chemistry behind traditional drying practices". Revista de Química, 2015. http://repositorio.pucp.edu.pe/index/handle/123456789/99237.
Testo completoMaca’s (Lepidium meyenii) post harvest processing is key in generating a metabolic profile that will result in its well reported nutraceutical properties. This article presents how different metabolic processes generate these changes.
Lin, Hong-Ting. "Characterisation of the MacA/MacB/TolC tripartite pump that confers resistance to macrolides in E. coli". Thesis, Durham University, 2008. http://etheses.dur.ac.uk/2273/.
Testo completoLock, Olga, e Rosario Rojas. "Química y Farmacología de Lepidium meyenii Walp ("Maca'')". Revista de Química, 2017. http://repositorio.pucp.edu.pe/index/handle/123456789/99240.
Testo completoOrtega, San Martín Luis. "De la maca a las nanopartículas contra el cáncer". Revista de Química, 2015. http://repositorio.pucp.edu.pe/index/handle/123456789/99367.
Testo completoMarín, Bravo Manuel Jesús. "Estudio morfohistológico y farmacológico de Lepidium meyenii Walpers "Maca"". Master's thesis, Universidad Nacional Mayor de San Marcos, 2002. https://hdl.handle.net/20.500.12672/11310.
Testo completoTesis
Arias, Ramírez Angela Renee. "Biotecnología y metabolitos secundarios en Lepidium peruvianum Chacón, "Maca"". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2002. https://hdl.handle.net/20.500.12672/1401.
Testo completoLepidium peruvianum Chacón, is a Cruciferae native from the Andes. It grows between 3,500 and 4500 m. Original from the Bombón plateau, located at the Peruvian localities Junín and Pasco. It became in a crop with a high economical value, due its medicinal and nutritional properties. Actually, it is extended to other regions of the country. The main objective of this research is to study the tissue culture ability of the crop to use in vitro tissues as a tool for secondary metabolite production. Leaves, petioles, roots and hypocotils of L. peruvianum were tested as explants to induce calli. Different concentrations of 2,4-D and Kinetin, in MS basic medium were tested. Calli were induced in most of the media tested, the most efficient hormone ratio auxin/citokinin was 1. It was evaluated the presence of glucosinolates and alkaloids in the callus induced and compared to maca hypocotils as control sample. Two glucosinolates fractions were obtained from calli analyzed. It was found one or two fractions according to the callus and in most of the cases the concentration was higher in callus than in control. In the other hand, it was observed a high variability in the alkaloid fractions and other unidentified metabolites extracted from the calli evaluated in this work. It was also evaluated the presence of myrosinases in the calli studied, and it was found positive bands either in callus as in maca hypocotils.
Tesis
Yi, Wu Acuy Winnie Yingli. "Modulación del metabolismo postcosecha de glucosinolatos en maca (Lepidium meyenii)". Bachelor's thesis, Pontificia Universidad Católica del Perú, 2020. http://hdl.handle.net/20.500.12404/16462.
Testo completoGarcía, Hurtado Jacquelin. "Comparación de la actividad de extractos de Lepidium peruvianum Chacón (maca) sobre leucocitos procedentes de individuos saludables e infectados con el virus de la inmunodeficiencia humana (HIV)". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2010. https://hdl.handle.net/20.500.12672/879.
Testo completo--- Infection with the human immunodeficiency virus (HIV), causes a profound immunosuppression that exposes people infected to various opportunistic infections. Lepidium peruvianum Ch. has several properties, the most known, its ability stimulating the reproduction and energizing or revitalizing, recent research has shown antitumor and immunostimulatory capacity. The aim of this study was to determine the activity of three types of extracts (chloroform, methanol and aqueous) of L. peruvianum Ch. in cultures of leukocytes from healthy people and HIV-1+. To do this, blood cells from 5 healthy and 5 HIV-1+ volunteers were cultured in triplicate in the presence of each extract at a final concentration of 800μg/mL and incubated for 16 hours at 37 ° C. We performed the counting of leukocytes and their 4 cell lines (lymphocytes, neutrophils, eosinophils and monocytes) through a hemogram and populations of T lymphocytes CD3+ CD4+ and CD3+ CD8+ by flow cytometry. We employed RPMI culture medium as negative control test. In healthy people, for the 4 cell lines tested, the chloroform extract was able to increase significantly the number of lymphocytes (p= 0.003). The CD3+CD4+ lymphocyte population showed an increase cell with the chloroform extract (p= 0.004). In people HIV-1+ the 3 extracts were able to increase the number of leukocytes. In individuals belonging to stage C showed that the chloroform extract achieved a significant increase in number of lymphocytes over control. These results may be helpful to use a L. peruvianum Ch. in treating people infected with HIV-1 contributing to restore the level and function of T cells infected with the virus. Key Words: Lepidium peruvianum, Lepidium meyenii, maca, immunostimulant, secondary metabolites, HIV-1, AIDS.
Tesis
Del, Valle Mendoza Juana, Tomàs Pumarola, Gonzales Libertad Alzamora e Valle Luis J. Del. "Antiviral activity of maca (Lepidium meyenii) against human influenza virus". Elsevier B.V, 2014. http://hdl.handle.net/10757/335865.
Testo completoFinancial support of this study was provided by AECID grants (PCI: C/033641/10) and AGAUR (MAT2009-11503, MAT2012-36205, 2009SGR-1208). JDVM support was provided by 1st Concurso Incentivo a la Investigación de la Universidad Peruana de Ciencias Aplicadas, Lima, Peru.
Revisión por pares
Apumaytal, Unfredo P., e de Ugaz Olga Lock. "La maca, importante especie vegetal peruana merece un mayor estudio". Revista de Química, 2013. http://repositorio.pucp.edu.pe/index/handle/123456789/100414.
Testo completoAyambo, Saavedra Luis Danny. "Optimización del proceso de extracción etanólica de Lepidium peruvianum Chacón, "maca"". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2006. https://hdl.handle.net/20.500.12672/1111.
Testo completoThe present work of investigation develops a methodology for the optimization of the process that increases the extraction of glucosinolates mainly the benciglucosinolate of the etanolic extract by the tuberous root of Lepidium peruvianum Chacón (maca) under the form of atomized extract. The optimized process begins with the harvesting by the tuberous root of Lepidium peruvianum Chacón (maca) coming from district of San Francisco de Uco (Junín), adds liquid Nitrogen to him to diminish the temperature to - 50° C that inhibits the activity of myrosinases, enzymes which they degrade the glucosinolates, immediately is come to the worn out one using a mill of hammers provided with mesh N° 4, soon by mesh N° 10, it adds the ground one to a steel tank with agitator, who contains etilic alcohol of 80° with constant agitation during 72 hours to room temperature; the liquid phase of the etanolic extract separates using a centrifuge, the separated liquid is transferred to a jacketed tank, with constant agitation adds maltodextrin to him, that is the support, takes to him to a temperature of 90° C and with the use of a pump it is entered to him the spray for the obtaining of the extract atomized in dust. It is come to homogenize using a tamizadora provided with mesh N° 60 obtaining a fine dust. The identification and quantification by HPLC of the bencilglucosinolates present in the atomized extract use like movable phase acetic nitrile: metanol: water (25:25:50) and octilsilane column 5 um (125 mm x 4,6 mm), the time of retention as much for the standard of the bencilglucosinolate as for the sample was of 9,55 minutes, the amount of bencilglucosinolates in the atomized extract of the optimized process was of 0,475 g%, whereas for the common process he were 0,219 g%. The methodology offers a high specificity for the extraction of bencilglucosinolate present in Lepidium peruvianum Chacón (maca).
Tesis
Juárez, Eyzaguirre José Roger. "Enriquecimiento en componentes asimilables del polvo seco de maca mediante hidrólisis por enzimas purificadas". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2004. https://hdl.handle.net/20.500.12672/2583.
Testo completoIn the present study was carried out the enzymatic hydrolysis of carbohydrates, fibers (cellulose) and of proteins contained in Maca, natural resource very diffused at world level, with the purpose of unfolding the components and nutritious of Maca to simpler and more assimilable units for the human beings. The following commercial enzymes were used: cellulase (Celluclast® 1.5 L), amylase (Fungamyl® BG), multienzyme (Viscozyme® L) and peptidase (Neutrase ®), the same ones that were provided by Novo Nordisk. It was designed a preliminary test using twelve evaluation or treatment of Maca´s powder with an enzyme or combinations of these. When it was used two or three enzymes, in some cases these they were applied in sequential form and in other they were applied simultaneously. The reaction conditions were standardized for all the preliminary systems. Then, five were selected to present better reaction conditions and bigger quantity of sugars reducers and proteins. The analytic results in the five tested systems show us that the concentration of sugars reducers, product of the unfolding of carbohydrates reaches concentrations among 77 to 90 g %, in the sub products of hydrolysis. However the protein concentration reaches values among 20 to 33 g % for action of the protease, there being identified 13 amino acids by chromatography in two-dimensional fine layer. Likewise the presence of two alkaloids was demonstrated in Maca´s powder, which were identified also in the sub products of hydrolyses, demonstrating that these hydrolysis processes don't affect the structure of these metabolites. Key words: Maca´s powder, enzymatic hydrolysis, industrial enzymes, assimilable components.
Tesis
Guedes, Josiel de Alencar. "Reservat?rio Tabatinga (Maca?ba-RN): qualidade ambiental, conflitos e uso". Universidade Federal do Rio Grande do Norte, 2015. http://repositorio.ufrn.br/handle/123456789/19916.
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Os reservat?rios s?o mananciais constru?dos ao longo de canais fluviais, com a intercepta??o por barramentos feitos por concreto ou terra. No Brasil eles s?o constru?dos para diversas finalidades, destacando-se a gera??o de energias (hidrel?tricas), regulariza??o de vaz?o e cria??o de reservas h?dricas, e conten??o de enchentes, por isso desempenharam e ainda desempenham papel importante na sociedade moderna. No semi?rido da regi?o Nordeste, normalmente s?o utilizados para o abastecimento de cidades e como fonte de alimenta??o. No Estado do Rio Grande do Norte, os grandes reservat?rios s?o destinados a esta mesma finalidade. Cidades que se formaram ?s margens de rios, ou que tenham canais fluviais cruzando seu espa?o, lidam com problemas relacionados e inunda??o. Na cidade de Maca?ba-RN, esse processo ocorria sistematicamente durante o per?odo chuvoso, causando grandes transtornos ? popula??o local. Fruto de reivindica??o coletiva, foi constru?do o Reservat?rio de Tabatinga no rio Jundia?, a montante da cidade. Diante deste cen?rio, esta tese visou analisar a qualidade socioambiental desse manancial. Para atingir esse objetivo, foram empregadas metodologias centradas na averigua??o da qualidade de ?gua, al?m da aplica??o de question?rio para conhecer a percep??o dos moradores da ?rea rural, onde o reservat?rio foi constru?do e dos moradores da ?rea urbana da cidade. Os resultados mostraram a exist?ncia de conflitos dos moradores das comunidades rurais e a presen?a do reservat?rio, enquanto que para a popula??o da cidade, o reservat?rio ? considerado a solu??o correta para o t?rmino das enchentes na zona urbana, mas entendem que tamb?m servem como fonte econ?mica para a popula??o rural. Considerando a avalia??o da fonte de ?gua, este estudo concluiu que o Reservat?rio Tabatinga est? impr?prio para uso, em fun??o da presen?a de metais de signific?ncia toxicol?gica com potencial de causar danos ao material gen?tico dos indiv?duos que utilizam esse a?ude para diversos fins, podendo levar s?rios riscos ? sa?de da popula??o.
The reservoirs are water sources built along the fluvial basins, between rivers and dams made by concrete or earth. In Brazil they are built for different purposes, standing out the generation of energy (hydroelectric power station), flowing regulation, water reserves and flooding control, therefore they have played and still play an important role in the modern society.In the Northeastern semiarid region, they are typically used to supply cities and as a source of food.In the state of Rio Grande do Norte, the large reservoirs are intended for the same purpose.The cities settled in the riverbanks, or which have river channels crossing them, face flooding related problems. In the city of Maca?ba-RN, flooding occurred systematically during the rainy season, causing great inconvenience to the local population.As product of the collective claim Tabatinga Reservoir in Jundia? river was built, upstream of the city. Facing this background, this thesis aimed to assess the s?cio-environmental quality of this reservoir.To achieve this goal, methodologies pointed to assess water quality along with the aplication of a questionnaire were used aimed to verify the quality of water and to know the perception of the residents from urban and rural ?rea settled near to the reservoir was performed. The results showed the existence of conflicts of residents of rural communities and the presence of the reservoir, while for the city's population, the reservoir is considered not only the right solution to solve flooding in urban areas, but also as economic source for the rural population. Considering the water source assessment, this study concluded that the Tabatinga Reservoir is unfit for human use, due to the presence of metals of toxicological significance with the potential to elicit damage to the genetic material of individuals that use water from this reservoir, leading to cause serious risks to health population.
Tormena, Marcela Marta Lazaretti. "Desenvolvimento de formulação para bolo contendo farinha de maca e yacon". Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/2177.
Testo completoNeste trabalho foi desenvolvida uma formulação otimizada de bolo de chocolate com substituição parcial da farinha de trigo por uma mistura de farinha de yacon e maca peruana. Os tubérculos escolhidos são alimentos com propriedades funcionais benéficas à saúde, como ação antioxidante e efeito prebiótico. A influência das proporções das farinhas e a quantidade de água acrescentada à massa foram avaliadas através de análise sensorial, colorimetria, perfil de textura e volume específico. Foi aplicado um planejamento experimental do tipo simplex-centroid, para as proporções das três farinhas, com a quantidade de água como uma variável de processo avaliada em três níveis distintos. De acordo com os resultados do atributo aceitabilidade geral dos bolos, os julgadores foram segmentados em dois grupos pela técnica do k-means. Após a segmentação foram construídos modelos de regressão para aceitabilidade geral média de cada grupo sendo obtido valores de R2ajustado de 92,5 % para o grupo 1 e 98,9 % para o grupo 2. Através da otimização pelo método simplex sequencial foi determinada uma formulação otimizada para o grupo 1 (49 % de trigo, 37 % de yacon, 14,0 % de maca e 140,0 mL de água) e outra para o grupo 2 (35 % de trigo, 65 % de yacon, 0,0 % de maca e 120,0 mL de água). Além dessas formulações, foi proposta uma terceira mistura com o maior teor de maca (32 %) que não alterasse significativamente a aceitação geral de ambos os grupos. De maneira geral, os resultados da avaliação sensorial indicaram que a presença do yacon aumenta o grau de aceitação do bolo, mesmo com a adição da maca que se mostrou sensorialmente menos aceita. Foi identificada uma correlação significativa entre a aceitação geral dos bolos e seu sabor. Assim também, a cor sensorial foi diretamente relacionada a bolos mais escuros e com maior saturação do marrom. As três formulações otimizadas em conjunto com duas formulações controle foram utilizadas em uma análise de perfil livre. Os resultados da análise de perfil livre foram submetidos à análise de componentes comuns com pesos específicos, cujos resultados, na forma de um gráfico de consenso e de saliências, tornaram observáveis os efeitos diretos da substituição do trigo pelo yacon e pela maca, sobre as propriedades sensoriais dos bolos produzidos. A correlação das componentes comuns com os atributos dos julgadores foi utilizada para a descrição sensorial das amostras. Assim, uma maior proporção de maca intensifica a cor marrom, o aroma e sabor de queimado. Já uma maior proporção de yacon produz uma melhor aparência, maciez, sabor doce e de chocolate. Isto corrobora a afirmação que a substituição do trigo pelo yacon nos bolos produzidos traz melhorias às suas características sensoriais, enquanto a adição de maca traz prejuízos sensíveis às mesmas.
This work describes the development of an optimized chocolate cake formulation with partial substitution of wheat flour by a mixture of yacon flour and maca flour. The chosen tubercles are functional foods with benefits to human health, as antioxidant activity and prebiotic effect. The influence of the proportions of the flours, as the amount of water added to the batter, were evaluated through the results of sensory analysis, colorimetry, texture profiling and specific volume. The simplex-centroid experimental design was proposed for the three mixture variables (flours proportions) and one process variable (amount of water added to the batter) in three distinct levels. The consumers were segmented through the k-means technique, grouped by their overall acceptability of the cakes. A regression model for the overall acceptability was constructed for both groups, with a R2adjusted of 92.5 % for group 1 and 98.9 % for group 2. The sequential simplex method was used to optimize the formulation for group 1 (49 % wheat, 37 % yacon, 14 % maca and 140 mL of water) and, group 2 (35 % wheat, 65 % yacon, 0 % maca and 120 mL of water). It was proposed a third formulation with greater maca content (32 %) and minimal effect on overall acceptability for both groups. In general, the sensory evaluation results indicated that the presence of yacon increases the acceptability of the cakes, even when maca was added, which alone showed less desirable. A significant correlation was observed between the overall acceptability of the cakes and their flavor. In addition, the sensory evaluation of color was found strongly correlated to darker cakes and saturated browns. The free-choice profiling was applied to the three optimized formulations along with two control formulations. The data acquired was evaluated with common components and specific weights analysis. The results, presented as similarity map and subject space, made directly observable the effects of wheat substitution by yacon and maca over the sensory characteristics of the produced cakes. The correlation of the common components with the consumers’ attributes was used for sensory description of samples. Thus, a greater proportion of maca enhances the brown color, but also the burnt aroma and taste of the cakes. Whereas, a higher proportion of yacon produces a better appearance, softness, sweetness and increased chocolate flavor. This corroborates the claim that the replacement of wheat by yacon in the produced cakes brings improvements to their sensory characteristics, while adding maca is clearly deleterious to them.
Silveira, Hugo Vin?cius Lelis. "Torta de maca?ba como aditivo em silagem de capim-elefante". UFVJM, 2017. http://acervo.ufvjm.edu.br/jspui/handle/1/1783.
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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES)
Objetivou-se com este trabalho avaliar os efeitos da adi??o de doses crescentes do subproduto torta de polpa de Acrocomia aculeata (maca?ba) sobre o valor nutritivo, caracter?sticas fermentativas, perdas do processo fermentativo e influ?ncia na estabilidade aer?bica de silagens de capim-elefante (Pennisetum purpureum Schum.). O delineamento experimental foi inteiramente casualizado com 4 repeti??es. Os tratamentos foram constitu?dos pela forrageira capim-elefante aditivada de seis doses de torta de polpa de coco de maca?ba com base na mat?ria natural (0, 6, 12, 18, 24, 30%). A planta forrageira passou por per?odo de 150 dias de amarmazenamento em silos experimentais de polietileno (PVC). Foi determinado o valor nutritivo, as caracter?sticas fementativas, as perdas e a estabilidade aer?bia.Verificou-se efeito linear crescente (P <0,05) das doses de TPCM sobre o teor m?dio de mat?ria seca (MS), extrato et?reo (EE), lignina, carboidratos n?o fibrosos (CNF) e digestibilidade in vitro da mat?ria seca (DIVMS) das silagens de capim-elefante, entretanto, os teores de fibra em detergente neutro (FDN), fibra em detergente neutro corrigida para cinzas e prote?na (FDNcp), fibra em detergente ?cido (FDA) e prote?na bruta (PB) foram reduzidos linearmente (P<0,05) ? medida que se elevou a adi??o de TPCM. A inclus?o de TPCM elevou linearmente (P<0,05) os valores de pH e reduziu os valores de nitrog?nio amoniacal (N-NH3) das silagens. Os valores de produ??o de efluentes na silagem decresceram linearmente (P<0,05) com a inclus?o do aditivo. Os valores de perda por gases apresentaram resposta quadr?tica (P<0,05) ? medida que se elevou a adi??o de TPCM nas silagens. A estabilidade aer?bica foi afetada nas silagens de capim-elefante, mostrando uma eleva??o na estabilidade a medida que se elevava a dose de inclus?o da TPCM. De forma geral a adi??o da TPCM melhora o valor nutritivo e os par?metros fermentativos da silagem de capim-elefante, sendo recomendado a inclus?o de 15 % desse aditivo.
Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2017.
The objective of this work was to evaluate the effects of the addition of doses of Acrocomia aculeata pulp by-product (maca?ba) on nutritive value, fermentative characteristics, losses of fermentation and influence on aerobic stability of Elephant grass silages (Pennisetum Purpureum Schum.). The experimental design was completely randomized with 4 replicates. The treatments were constituted by Elephant grass forage with six leves of maca?ba coconut pulp cake (MCPC) based on natural matter (0, 6, 12, 18, 24, 30%). The silos were storage by 150 days in experimental polyethylene (PVC) silos. The nutritive value, fementative characteristics, losses and aerobic stability were determined. There was an increasing linear effect (P <0.05) of MCPC doses on the mean dry matter (DM), ether extract (EE), non-fibrous carbohydrates (NFC) and in vitro dry matter digestibility (IVDMD) of Elephant grass silages. However, neutral detergent fiber (NDF), neutral detergent fiber corrected for ash and protein (FDNcp) , acid detergent fiber (ADF), and crude protein (CP) were linearly reduced (P <0.05) as the addition of MCPC was increased. The inclusion of MCPC linearly increased (P <0.05) the pH values and reduced the ammoniacal nitrogen (N-NH3) values of the silages. The values of effluent production in the silage decreased linearly (P <0.05) with inclusion of the additive. The gas loss values presented a quadratic response (P <0.05) as the addition of MCPC to the silages increased. Aerobic stability was affected in Elephant grass silages, showing an increase in stability as the inclusion dose of MCPC was increased. In general, the addition of MCPC improves the nutritive value and fermentative parameters of Elephant grass silage. Recommended the inclusion of 15% of this additive.
Zhao, Jianping. "Chemical profiling of botanical supplements : Maca (Lepidium Meyenii) and Damiana (Turnera Diffusa) /". Full text available from ProQuest UM Digital Dissertations, 2007. http://0-proquest.umi.com.umiss.lib.olemiss.edu/pqdweb?index=0&did=1414122821&SrchMode=1&sid=1&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1221157623&clientId=22256.
Testo completoRíos, Zuñiga Alma Zuri. "Metabolismo de ácidos grasos en Maca (Lepidium meyenii) durante el secado en horno". Master's thesis, Pontificia Universidad Católica del Perú, 2018. http://tesis.pucp.edu.pe/repositorio/handle/123456789/11914.
Testo completoTesis
Oliveira, Jonaina Costa de. "Abordagem farmacolÃgica e terapÃutica da Lepidium meyenii Walp. (MACA): uma revisÃo de literatura". Universidade Federal do CearÃ, 2011. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=10919.
Testo completoA utilizaÃÃo de plantas medicinais e fitoterÃpicos para a recuperaÃÃo da saÃde à uma prÃtica bastante difundida que foi sedimentando-se ao longo do tempo, sendo o resultado do acÃmulo secular de conhecimentos empÃricos sobre a aÃÃo das plantas por diversos grupos Ãtnicos. Faz-se necessÃrio o estabelecimento de um corpo de evidÃncias sobre o perfil de seguranÃa dos fitoterÃpicos para a reduÃÃo dos riscos à saÃde do paciente. à de fundamental importÃncia a aplicaÃÃo de ferramentas que permitam uma avaliaÃÃo crÃtica e racional dos estudos prÃ-clÃnicos e ensaios clÃnicos sobre eficÃcia e seguranÃa das plantas medicinais e fitoterÃpicos. Esta pesquisa trata-se de uma revisÃo de literatura envolvendo a Lepidium meyenii Walp. (Maca), uma planta utilizada na medicina tradicional em diversas condiÃÃes patolÃgicas e disfunÃÃes orgÃnicas. Trata-se de uma revisÃo narrativa-discursiva. A planta Lepidium meyenii à nativa na RegiÃo dos Andes, no Peru, mas pode ser encontrada na BolÃvia, ColÃmbia, Chile e Argentina. Na medicina tradicional peruana a Lepidium meyenii à utilizada para aumentar a vitalidade, no stress, para promover a libido, aumentar a fertilidade e o desempenho sexual em homens e mulheres. Alguns estudos sugerem que metabÃlitos secundÃrios encontrados em extratos desta planta sÃo responsÃveis por seus efeitos fisiolÃgicos (macamidas e macaenos). Os estudos toxicolÃgicos realizados com a Lepidium meyenii evidenciaram sua baixa toxicidade por via oral em animais e baixa toxicidade celular in vitro. Diversos estudos prÃ-clÃnicos tÃm sido realizados para avaliar aÃÃes terapÃuticas associadas ao uso da Maca, onde podemos citar: aÃÃo antioxidante, aÃÃo hipolipemiante, aumento da fertilidade, aumento do desempenho sexual, aÃÃo espermatogÃnica e efeito antihiperplÃsico na prÃstata. A Lepidium meyenii (Maca) tem sido amplamente utilizada na medicina tradicional no aumento da vitalidade, no estresse, na promoÃÃo da libido, no aumento da fertilidade e da performance sexual em homens e mulheres. No sexo masculino constatou-se que a Maca aumenta o desejo sexual, a produÃÃo de espermatozÃides e melhora a disfunÃÃo erÃtil de intensidade leve. No sexo feminino observou-se uma reduÃÃo dos sintomas de desconforto da menopausa, assim como melhora da disfunÃÃo sexual associada ao climatÃrio. Pode-se concluir, apÃs anÃlise da literatura cientÃfica, dos dados etnofarmacolÃgicos e dos ensaios prÃ-clÃnicos e clÃnicos realizados, que a Lepidium meyenii (Maca) pode ser indicada na melhora do desejo (libido) e desempenho sexual e à segura na dose de 1,5 g/dia a 3 g/dia.
The use of medicinal plants and herbal remedies for the recovery of health is a widespread practice that was cobbled up over time, being the result of the secular accumulation of empirical knowledge about the action of plants by different ethnic groups. It is necessary to establish evidences on the safety profile of herbal medicine to reduce risks to patient health. The application of tools that allow a critical evaluation and rational use of preclinical studies and clinical trials on efficacy and safety of medicinal plants and herbal medicines is very important. This research is a review of studies involving Lepidium meyenii Walp. (Maca), a plant used in traditional medicine in various pathological conditions and organ dysfunction. This is a narrative discursive review. Lepidium meyenii is native to the region of the Andes in Peru, but can be found in Bolivia, Colombia, Chile and Argentina. In the Peruvian traditional medicine Lepidium meyenii is used to increase vitality, stress, to promote libido, increase fertility and sexual performance in men and women. Some studies suggest that secondary metabolites found in extracts of this plant are responsible for their physiological effects (macamides and macaenes). Toxicology studies conducted with Lepidium meyenii showed its low oral toxicity in animals and low toxicity in vitro. Several preclinical studies have been conducted to evaluate therapeutic actions associated with the use of Maca, which include: antioxidant, lipid-lowering effects, fertility enhancement, increased sexual performance, spermatogenic effect and action on anti hyperplasia of the prostate. The Lepidium meyenii (Maca) has been widely used in traditional medicine in increased vitality, in stress, promoting libido, increased fertility and sexual performance in men and women. In males it was found that Maca increases sexual desire, sperm production and improves mild erectile dysfunction. In females, Maca showed a reduction in symptoms of menopause and improvement of sexual dysfunction associated with menopause. It can be concluded after a review of the scientific literature, ethnopharmacological data and pre-clinical and clinical studies, that Lepidium meyenii (Maca) may be indicated in the improvement of desire (libido) and sexual performance, and is safe in the dose of 1.5 g/day to 3 g/day.
Souza, Clarice Sales Moraes de. "Diretrizes para conserva??o da esp?cie Mimosa Caesalpiniifolia Benth., Maca?ba-RN". Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18225.
Testo completoCoordena??o de Aperfei?oamento de Pessoal de N?vel Superior
About 40% of the earth is occupied by tropical and subtropical forests, including 42% of dry forests, where there is Caatinga Bioma, contemplating tree forests and shrubs, with xerophytic characteristics. Study and conservations of Caatinga biologic diversity is one of the greatest challenges of Brazilian science because those are, proportionally, the less studied among natural areas, with most of the scientific effort centered in very few points around the main cities in the area and also because it is the less protected natural Brazilian area. The environmental degradation is constantly increasing and has its rhythm accelerated by the men appropriation to meet or not their own needs. Therefore, species conservation should be based in three principles: the use of natural resources by present generation, waste prevention and use of the natural resources to benefit the majority of the citizens. Among the strategies to species conservation, we can mention the ex situ conservation , in which the conservation of genetic resources may be realized outside of the natural environment in which the species occur, and in situ conservation , or, in other words, in the places where the species occur. In ex situ conservation, the germplasm collections are maintained in the field and/or in laboratories (conservation chambers), and this mainly conserves intraspecific diversity (genetic variance), the ex situ collections are continuously enriched by collection activities, introduction and germplasm interchange; the in situ conservation preserving ecosystems and habitats, maintaining and recovering native population of species of interest. So, the objective of this paper is the search for strategies to the conservation of Mimosa caesalpiniifolia B. (sabi?) using instruments of environmental perception and plant biotechnology, as mechanisms of in situ and ex situ conservation. To environmental perception, were realized open, semi-structured and qualitative interviews. The questions included socioeconomic data and knowledge of Sabi? specie. To plant biotechnology, Sabi? seed collection were realized in different location to formation of a germplasm bank. The specie micropropagation was made from nodal segment of plants from the matrizeiro. About the knowledge of rural populations and the use of Sabi? plant, some preferences occurred from speeches that the plant possesses a firm wood, not attacked by termites, legalized for exploration by the Brazilian environmental organ (IBAMA), and is a native specie. This research found the rural population has knowledge about Sabi? specie and the natural resources are exhausting. The proposal that the rural community brought was the donation of the Sabi? specie seeding initiating on the rain season, in which the seeding would be plated between the lots, in individual plantations. To the formation of a matrix bank, plant biothecnology brought answers favorable to Sabi? specie seeding, with the formation of multiple shoots
Cerca de 40% do globo terrestre est? ocupado pelas florestas tropicais e subtropicais, entre as quais 42% s?o compreendidas pelas florestas secas, onde se inclui o Bioma Caatinga, contemplando com floresta arb?rea ou arbustiva, de caracter?sticas xerof?ticas. O estudo e a conserva??o da diversidade biol?gica da Caatinga ? um dos maiores desafios da ci?ncia brasileira, pois, estas s?o proporcionalmente as menos estudadas entre as ?reas naturais, com grande parte do esfor?o cient?fico concentrado em alguns poucos pontos em torno das principais cidades da regi?o, e tamb?m por ser a regi?o natural brasileira menos protegida. A degrada??o do meio ambiente vem aumentando cada vez mais, tendo, ao mesmo tempo, seu ritmo acelerado em decorr?ncia da sua apropria??o cada vez maior pelo homem, a fim de suprir suas necessidades imediatas ou n?o. Assim a conserva??o de esp?cies deveria basear-se em tr?s princ?pios: os usos dos recursos naturais pela gera??o presente, a preven??o de desperd?cio e o uso dos recursos naturais para benef?cio da maioria dos cidad?os. Dentre as estrat?gias para conserva??o de esp?cies, podemos citar a conserva??o ex situ , na qual a conserva??o dos recursos gen?ticos pode ser realizada fora do ambiente de ocorr?ncia natural das esp?cies e conserva??o in situ , ou seja, nos locais de ocorr?ncia das esp?cies. Na conserva??o ex situ as cole??es de germoplasma s?o mantidas no campo e/ou laborat?rios (c?maras de conserva??o), e esta trata particularmente de conservar diversidade intraespec?fica (variabilidade gen?tica), as cole??es ex situ s?o continuamente enriquecidas por atividades de coleta, introdu??o e interc?mbio de germoplasma, j? a conserva??o in situ conservam-se ecossistemas e habitats, mantendo e recuperando popula??es nativas de esp?cies de interesse. Assim, o objetivo desta pesquisa ? a busca de estrat?gias para conserva??o de Mimosa caesalpiniifolia B. (sabi?) utilizando instrumentos de percep??o ambiental e biotecnologia vegetal, como mecanismos de conserva??o in situ e ex situ. Para a percep??o ambiental, realizamos entrevistas abertas, semi-estruturadas e de forma qualitativa. As perguntas eram compostas por dados socioecon?micos e conhecimentos da esp?cie Sabi?. Para a biotecnologia vegetal, coletas de sementes de Sabi? foram realizadas em distintos locais para a forma??o de um banco de germoplasma. A micropropaga??o da esp?cie foi a partir de segmentos nodais de plantas provindas do matrizeiro. Com rela??o ao conhecimento das popula??es rurais ao uso da planta Sabi? ocorreram prefer?ncias a partir dos discursos que a planta possui uma madeira firma, n?o ? atacada por cupim, ? legalizada para a explora??o pelo ?rg?o ambiental federal (IBAMA), e ? uma esp?cie da regi?o. A pesquisa caracterizou que a popula??o rural possui conhecimentos sobre a esp?cie Sabi? e que percebem que os recursos naturais est?o se exaurindo. A proposta que a comunidade rural sup?s foi ? doa??o de mudas da esp?cie Sabi? a partir do per?odo das chuvas, em que as mudas seriam plantadas na divis?o entre os lotes, em plantios individuais. Para a forma??o de um banco de matrizes, a biotecnologia vegetal trouxe respostas favor?veis na produ??o de mudas da esp?cie Sabi?, com a forma??o de brota??es e mudas vigorosas
Oliveira, Jonaina Costa de. "Abordagem farmacológica e terapêutica da Lepidium meyenii Walp. (MACA) : uma revisão de literatura". reponame:Repositório Institucional da UFC, 2011. http://www.repositorio.ufc.br/handle/riufc/6851.
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The use of medicinal plants and herbal remedies for the recovery of health is a widespread practice that was cobbled up over time, being the result of the secular accumulation of empirical knowledge about the action of plants by different ethnic groups. It is necessary to establish evidences on the safety profile of herbal medicine to reduce risks to patient health. The application of tools that allow a critical evaluation and rational use of preclinical studies and clinical trials on efficacy and safety of medicinal plants and herbal medicines is very important. This research is a review of studies involving Lepidium meyenii Walp. (Maca), a plant used in traditional medicine in various pathological conditions and organ dysfunction. This is a narrative discursive review. Lepidium meyenii is native to the region of the Andes in Peru, but can be found in Bolivia, Colombia, Chile and Argentina. In the Peruvian traditional medicine Lepidium meyenii is used to increase vitality, stress, to promote libido, increase fertility and sexual performance in men and women. Some studies suggest that secondary metabolites found in extracts of this plant are responsible for their physiological effects (macamides and macaenes). Toxicology studies conducted with Lepidium meyenii showed its low oral toxicity in animals and low toxicity in vitro. Several preclinical studies have been conducted to evaluate therapeutic actions associated with the use of Maca, which include: antioxidant, lipid-lowering effects, fertility enhancement, increased sexual performance, spermatogenic effect and action on anti hyperplasia of the prostate. The Lepidium meyenii (Maca) has been widely used in traditional medicine in increased vitality, in stress, promoting libido, increased fertility and sexual performance in men and women. In males it was found that Maca increases sexual desire, sperm production and improves mild erectile dysfunction. In females, Maca showed a reduction in symptoms of menopause and improvement of sexual dysfunction associated with menopause. It can be concluded after a review of the scientific literature, ethnopharmacological data and pre-clinical and clinical studies, that Lepidium meyenii (Maca) may be indicated in the improvement of desire (libido) and sexual performance, and is safe in the dose of 1.5 g/day to 3 g/day.
A utilização de plantas medicinais e fitoterápicos para a recuperação da saúde é uma prática bastante difundida que foi sedimentando-se ao longo do tempo, sendo o resultado do acúmulo secular de conhecimentos empíricos sobre a ação das plantas por diversos grupos étnicos. Faz-se necessário o estabelecimento de um corpo de evidências sobre o perfil de segurança dos fitoterápicos para a redução dos riscos à saúde do paciente. É de fundamental importância a aplicação de ferramentas que permitam uma avaliação crítica e racional dos estudos pré-clínicos e ensaios clínicos sobre eficácia e segurança das plantas medicinais e fitoterápicos. Esta pesquisa trata-se de uma revisão de literatura envolvendo a Lepidium meyenii Walp. (Maca), uma planta utilizada na medicina tradicional em diversas condições patológicas e disfunções orgânicas. Trata-se de uma revisão narrativa-discursiva. A planta Lepidium meyenii é nativa na Região dos Andes, no Peru, mas pode ser encontrada na Bolívia, Colômbia, Chile e Argentina. Na medicina tradicional peruana a Lepidium meyenii é utilizada para aumentar a vitalidade, no stress, para promover a libido, aumentar a fertilidade e o desempenho sexual em homens e mulheres. Alguns estudos sugerem que metabólitos secundários encontrados em extratos desta planta são responsáveis por seus efeitos fisiológicos (macamidas e macaenos). Os estudos toxicológicos realizados com a Lepidium meyenii evidenciaram sua baixa toxicidade por via oral em animais e baixa toxicidade celular in vitro. Diversos estudos pré-clínicos têm sido realizados para avaliar ações terapêuticas associadas ao uso da Maca, onde podemos citar: ação antioxidante, ação hipolipemiante, aumento da fertilidade, aumento do desempenho sexual, ação espermatogênica e efeito antihiperplásico na próstata. A Lepidium meyenii (Maca) tem sido amplamente utilizada na medicina tradicional no aumento da vitalidade, no estresse, na promoção da libido, no aumento da fertilidade e da performance sexual em homens e mulheres. No sexo masculino constatou-se que a Maca aumenta o desejo sexual, a produção de espermatozóides e melhora a disfunção erétil de intensidade leve. No sexo feminino observou-se uma redução dos sintomas de desconforto da menopausa, assim como melhora da disfunção sexual associada ao climatério. Pode-se concluir, após análise da literatura científica, dos dados etnofarmacológicos e dos ensaios pré-clínicos e clínicos realizados, que a Lepidium meyenii (Maca) pode ser indicada na melhora do desejo (libido) e desempenho sexual e é segura na dose de 1,5 g/dia a 3 g/dia.
Arias, Albarracín Juan José, Valverde Luigino Fassioli e Ibañez Carlos Arturo Raymundo. "Plan de negocios para la exportación de la maca negra orgánica a china". Master's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2006. http://hdl.handle.net/10757/620920.
Testo completoSantos, Hilton T?lio Lima dos. "Avalia??o da torta de maca?ba como insumo para produ??o de bioetanol". UFVJM, 2011. http://acervo.ufvjm.edu.br:8080/jspui/handle/1/518.
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Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG)
Para a manuten??o das pr?ticas econ?micas e s?cio-culturais constru?das sobre a explora??o e transforma??o do petr?leo, faz-se necess?rio criar alternativas que n?o rompam de forma estanque com as pr?ticas industriais hoje vigentes. Nesse contexto, o uso de biomassas para a produ??o de combust?veis l?quidos que alimentem motores ? combust?o permite sustentar pr?ticas antigas com novos benef?cios. Dessa forma, a presente disserta??o teve por objetivo avaliar o potencial da torta de maca?ba, um coproduto da ind?stria de ?leos vegetais, como insumo para produ??o de bioetanol. Tal objetivo foi trabalhado atrav?s de estudos de sacarifica??o da torta de maca?ba com posterior processo fermentativo. A biomassa em quest?o foi caracterizada quimicamente, o que indicou a presen?a de aproximadamente 50% de carboidratos, distribu?dos em, 23,16 ? 0,95 % de amido, 11,49 ? 1,08% de celulose, 9,6 ? 0,79% de hemicelulose e 11,48 ? 0,62 % de a??cares sol?veis. Para a primeira interven??o da despolimeriza??o dos polissacar?deos presentes na torta de maca?ba foi realizado um planejamento experimental fatorial 25-1 com 5 fatores e 4 pontos centrais com as seguintes vari?veis: concentra??o de ?cido sulf?rico, tempo de pr?-tratamento ?cido, raz?o s?lido/l?quido, concentra??o de amiloglicosidase e concentra??o de celulase. Na sequ?ncia, o processo de sacarifica??o foi otimizado com o uso de delineamento composto central rotacional 23, com 3 fatores, 4 pontos centrais e 6 pontos axiais, onde foram avaliadas as concentra??es de ?cido sulf?rico, amiloglicosidase e celulase. Um hidrolisado obtido em condi??o otimizada com 92% de efici?ncia foi submetido ? destoxifica??o com carv?o ativado e, em seguida, foram realizados ensaios de fermentabilidade conduzidos como as leveduras Saccharomyces cerevisiae e Pichia stipitis. A levedura S. cerevisiae se mostrou resistente ao hidrolisado n?o destoxificado, apresentando YP/S de 0,49. P. stipitis mostrou-se suscept?vel ao meio n?o destoxificado, mas foi capaz de converter 99% dos a??cares redutores presentes no meio destoxificado. A torta de maca?ba apresentou potencial consider?vel para produ??o de bioetanol. A partir dos dados de bancada ? poss?vel estimar uma produ??o de 104l de etanol por tonelada de torta de maca?ba.
Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Qu?mica, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2011.
ABSTRACT For the maintenance of economic and socio-cultural practices built on the exploitation and processing of oil it is necessary to create alternatives that do not break so tight with current industrial practices. In this context, the use of biomass to produce liquid fuels that are fed into to combustion engines allows to sustain old practices with new benefits. Thus, this dissertation aimed to evaluate the potential of macaw palm coconut cake, a co-product of vegetable oil industry, as an input for bioethanol production. This goal was worked out through studies of the process of saccharification of macaw palm coconut cake with subsequent fermentation. The biomass in question was characterized chemically, what indicated the presence of approximately 50% of carbohydrates, among which, 23,16 ? 0,95% of starch, 11,49 ? 1,08% of cellulose, 9,6 ? 0,79% of hemicellulose and 11,48 ? 0,62% of soluble sugars. For the first intervention of deconstruction of the polysaccharides present in the macauba cake it was held a 25-1 factorial experimental design with five factors and four central points with the following variables: concentration of sulfuric acid, time of acid pretreatment, solid / liquid ratio, amyloglucosidase and cellulose concentrations. Following, the saccharification process was optimized using central composite rotational design 23, with three factors, four central points and six axial points, whereas the concentrations of sulfuric acid, cellulose and amyloglucosidase were evaluated. A hydrolyzed obtained in optimum condition with 92% efficiency was subjected to detoxification with activated charcoal and then, fermentability assays were carried out with yeasts Saccharomyces cerevisiae and Pichia stipitis. The yeast S. cerevisiae has proved resilient to the non-detoxified hydrolyzate and presented YP/S of 0.49. P. stipitis was found to be susceptible to the non-detoxified medium, but it was able to convert 99% of reducing sugars present in the detoxified medium. The macaw palm coconut cake showed considerable potential for bioethanol production. From the lab bench data it is possible to estimate a production of 104 l of ethanol per ton of macaw palm coconut cake.
Flores, Mego Jorge Alfredo. "Efecto en la tasa de crecimiento de Artemia sp. (Cepa Virrila) sustituyendo parcialmente la dieta algal con diferentes concentraciones de harina de "maca" (Lepidium meyenii walp.)". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2004. https://hdl.handle.net/20.500.12672/1416.
Testo completoThe importance of Lepidium meyenii walp. “Maca”, a native plant, has been referred to its high energetic and nutritional values that are related to fertility properties in small mammals and fishes as well. The goal of this research was to evaluate the growth rate of Artemia sp came from Virrila (Piura-Perú) when it is feed with concentrations differents of maca meal Lepidium meyenii in its algal diet. We stabilized a one-way factorial anova design (p menor a 0.05) wiht three repetitions. The variable factor was Diet: 100% algae (Chaetoceros gracilis)(CH); 100% maca flour (M); 50% algae and 50% of maca flour (MCH); 75% algae and 25% of maca flour (M2); 87.50% algae and 12.5% of maca flour (M4); 93.75% algae and 6,25 of maca flour (M8), the rate of feeding was M=0.001g). Temperature (25º) and density of culture (2 nauplies ml-1) were constants. The culture were carry out during 15 days, we used sea water with 35º/oo of salinity, 7.5 pH, filtered and sterilized with ultraviolet light. The light cycle was 18:6, under fluorescent light (40 Watts). The effect of factor was significant on growth rate. The results indicated that the treatment (MCH) showed the fastest growth rate (p menor a 0.05) and the worst was the treatment feeding just with maca (M). The “Maca’s pour” improved the growth rate as a complementary food, and its influence over the growth was positive, improving the growth rate and surpervivency of Artemia sp. Cepa Virrila.
Tesis
Amantini, Susy Nazare Silva Ribeiro. "Desenvolvimento da maca infantil multifuncional para atendimento odonto-médico-hospitalar de bebês e pré-escolares". Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/25/25145/tde-08092014-100422/.
Testo completoChildren in the age group from 0-5 years are still poorly assisted in what concerns suitable accommodation resources for pediatric dental care. The products available to this audience in the Brazilian market are little functional to the age group of 0-36 months. These products fail to meet minimum requirements for ergonomic adjustment in what concerns the professional performance or the childs welfare and safety. This research presents research and development of a stretcher for pediatric dental care, under the viewpoint of healthcare design. This kind of design is based upon ergonomics concepts, usability and emotion design. The aim is to present an equipment suitable to the psychophysics features of the target audience. The present research was developed considering both the professional and the patient approach. Psychophysics impact of interface versus user on both audiences were observed. It also propounds the prerogatives to establish the project requirements for the stretcher design, observing the identified needs in order to identify the functions this new stretcher should perform. The result exhibits a morphological structure similar to the adult targeted stretcher but its dimensioning is suitable and adequate to the age group of 0-5 years old. The final proposal was incremented with accessories whose functions are to adjust childs position in the stretcher, and to offer the necessary rests for neck and legs comfortable accommodation and, finally, to provide a comfortable contention of abrupt movements of the trunk, legs and head, in order to ensure the childs safety during its attendance. Colors were employed with a ludic and psychodynamics purpose, considering its application context and to favor a collaborative behavior of the child. In order to provide a safe and comfortable performance of the professional, the stretcher offers a pedal operated height adjustment and resources for its diminution and expansion therefore making it easier to approach the patient and to have a better sight on the childs buccal cavity.
Carvalho, Luna Dalla Rosa. "Saberes, movimentos e territorialidades: experi?ncias no Assentamento Quilombo dos Palmares II (Maca?ba/RN)". PROGRAMA DE P?S-GRADUA??O EM ANTROPOLOGIA SOCIAL, 2017. https://repositorio.ufrn.br/jspui/handle/123456789/24459.
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O presente estudo ? fruto de pesquisa de mestrado e tem como foco a forma como os saberes ligados ao trabalho com a terra s?o vivenciados no contexto de um assentamento de reforma agr?ria. O assentamento em quest?o ? o Projeto de Assentamento Quilombo dos Palmares II, localizado em Maca?ba/RN, que se encontra na regi?o metropolitana de Natal. A luta pela terra, as migra??es, as mem?rias da vida das fam?lias nos d?o o ch?o por onde pisar a fim de entender as territorialidades constru?das no espa?o do assentamento. Tamb?m s?o analisadas as negocia??es feitas com as normatividades institu?das pelo INCRA (Instituto de Coloniza??o e Reforma Agr?ria) e ?rg?os de controle ambiental e tamb?m com as condi??es materiais deixadas pelos usos anteriores dados a terra do assentamento. Passa-se por isso para adentrar os quintais, os lotes e as resid?ncias das fam?lias, na busca por compreender os saberes passados de gera??o em gera??o em cada contexto familiar, as t?cnicas e pr?ticas pr?prias de cada fam?lia, os conhecimentos gerados em cada trajet?ria, as identidades e os projetos que perfazem a vida ligada ao trabalho na terra e a forma como estes saberes e conhecimentos se atualizam nas novas condi??es de vida. Por fim, s?o apresentadas algumas experi?ncias de mulheres do assentamento abordando problem?ticas referentes ?s rela??es de g?nero, multifuncionalidade e a invisibilidade do trabalho de mulheres agricultoras. Tamb?m trazemos uma reflex?o dos saberes diferenciados de homens e mulheres no cuidado com plantas, animais e pessoas e relacionados ?s socializa??es e inser??es diferenciadas na vida agr?cola.
Cabezas, Saavedra Rebeca Rosaura, Siesquén Giovana Magaly Casachahua, Ramírez Juana Eyleen Larrea e Siu Isabel León. "Impacto de la Biopiratería en las Exportaciones peruanas de Harina de Maca periodo 2013-2015". Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2016. http://hdl.handle.net/10757/620974.
Testo completoTesis
Jara, Cossio Helen Isabel. "Munay Maqui : Kit de enseñanza sobre difusión de la maca dirigido a productores de Junín". Bachelor's thesis, Pontificia Universidad Católica del Perú, 2021. http://hdl.handle.net/20.500.12404/20371.
Testo completoSilva, Alarco Luciano. "Estudio de caso de un negocio sostenible basado en la producción de maca encapsulada en una cooperativa agraria del Departamento de Junín". Bachelor's thesis, Pontificia Universidad Católica del Perú, 2008. http://tesis.pucp.edu.pe/repositorio/handle/123456789/1340.
Testo completoTesis
Torres, Gonzales Dina. "Efecto modulador de la respuesta inmune humoral de extractos de Lepidium peruvianum Chacón (Maca) en ratones inmunosuprimidos con ciclosfosfamida". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2008. https://hdl.handle.net/20.500.12672/916.
Testo completoThe roots of Lepidium peruvianum Chacón (maca) they are recognized by theirs medicine properties inside the traditional medicine. They have secondary metabolites with biological activity as alkaloids, flavonoids and glucosinolates that can stimulates the recovery of the immune system in animals with experimental immunosuppretion by cyclophosphamide (CP) that induces suprresion of the immune system humoral in mice. The objective of the present study was verify the modulating effect of the “maca” on the immune response humoral in mice suppressed with cyclophosphamide. Three types of extracts were obtained: chloroformic (ECl), methanol (EMe) and aqueous (EAc) that they were administered for oral route in dose of 300mg/Kg of the body weight.
Tesis
Ríos, Ccolque Karen Roxana, e Alvaro Ivonne Katty Riquez. "Determinación del recuento microbiano de productos derivados de la maca (Lepidium meyenii W.) utilizando placas petrifilm y su comparación con el método convencional". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2007. https://hdl.handle.net/20.500.12672/1095.
Testo completo-- The objetive of the present work is about comparison between microbian recuent on derivades maca products: the Petrifilm plates count method and conventional method described en Official monography from Europe Pharmacopeia 2005 5th Edition and the aplicable determination of petrifilm plates like alternative method. Was realized a study about 40 samples of derivated maca products which were adquired at differents places located in the downtown, regression test of log10 and recuent of aerobios by conventional methods versus log10 recuent of the Petrifilm plates count which has been gotten a correlation of 0.99946 between those methods and the regression analysis to recuent yeast and moold which was got a correlation of 0.98681 between those methods. The gotten results conclude that mot exist significative differences between each other used methods, about microbiologics limits given by the OMS was found 85% of the evaluated samples didn´t do with permisibles limits to microbian recuents. Also Petrifilm plates offer us some advantages of the easy way, costs reduced, time and staffs increasing laboral productivity which was used. On the other hand it could be considered as alternative method in order to microbian recuent from maca derivated products.
Tesis
Dantas, Geovany Pachelly Galdino. "Feira de Maca?ba/RN : um estudo das modifica??es na din?mica socioespacial (1960/2006)". Universidade Federal do Rio Grande do Norte, 2007. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18854.
Testo completoCoordena??o de Aperfei?oamento de Pessoal de N?vel Superior
The objective of the current piece of research is to reflect upon the diverse changes that have occurred in the social and spatial dynamics of the Maca?ba fair in the period between 1960 and 2006. During the second half of the 19th century, Maca?ba had in the commerce one of this principle economic base a contribution for which the city became one of the main commercial warehouses of the East coast of the Rio Grande do Norte region. This helped lead to the growth of Maca?ba s fair, which proved to be one of the most important existing in the state until the 1970 s. In the last two decades of the 20th century, certain elements represented challenges to the fair at Maca?ba. These challenges stimulated substantial changes in the fair s dynamics which include the growth and expansion of the commercial and service sector, primarily though supermarkets; consolidation among the commercial and distribution networks, represented by the Central Office of Supply of the Rio Grande do Norte S/A (Ceasa/RN), by the wholesale and refrigeration companies; and the modernization of transportation methods, which permitted an expanded reach for these networks. Even with all these changes, the fair continues to be one of the strongest aspects of the city being the center of resistance against the surge of new forms of commerce and consumption in the city (notable the supermarkets) and the diffusion of other aspects of globalization. The fair has economic importance, as it offers a popular marketplace for the commercialization of very different products and a means for supplying goods to the residents of the city and the rural communities of Maca?ba and the surrounding municipalities; and socio-cultural importance in that the fair is a place where popular tradition is expressed, a place where a great number of parallel activities occur, a place for meeting again and again, of conversations, of manifestations of culture and art, and of socialization in all of its dimensions
O presente trabalho de pesquisa objetiva fazer uma reflex?o sobre as diversas modifica??es ocorridas na din?mica socioespacial da feira de Maca?ba no per?odo compreendido entre 1960 e 2006. Durante a segunda metade do s?culo XIX, Maca?ba teve no com?rcio uma das principais bases econ?micas o que contribuiu para que a cidade fosse o principal entreposto comercial do litoral leste do Rio Grande Norte. Esta condi??o propiciou o surgimento de sua feira, a qual se destacou como uma das principais existentes no estado at? por volta da d?cada 1970. Nas ?ltimas duas d?cadas do s?culo XX, alguns elementos representaram fatores de concorr?ncia para a feira de Maca?ba, o que possibilitou modifica??es substanciais na sua din?mica, dentre os quais se destacam: o crescimento e a expans?o do setor de com?rcio e de servi?os, atrav?s principalmente dos supermercados; a consolida??o das redes de comercializa??o e distribui??o, representado pela Central de Abastecimento do Rio Grande do Norte S.A(Ceasa/RN), pelas empresas atacadistas e pelos frigor?ficos; e, a moderniza??o dos meios de transportes, que permitiu uma expans?o do alcance espacial dessas redes. Mesmo com todas essas mudan?as, a feira ainda permanece como um dos tra?os mais marcantes da din?mica da cidade sendo um l?cus de resist?ncia frente ao surgimento de novas formas de com?rcio e de consumo na cidade (notadamente dos supermercados) e a difus?o de outros vetores da globaliza??o. A feira possui uma import?ncia econ?mica, pois s?o mercados peri?dicos populares destinados ? comercializa??o dos mais diferentes produtos e ao abastecimento da popula??o residente na cidade e nas comunidades rurais de Maca?ba e de outros munic?pios pr?ximos; e sociocultural na medida que a feira ? o lugar onde se expressa com mais for?a a tradi??o popular, o lugar onde se realizam um grande n?mero de atividades paralelas, o lugar dos encontros e reencontros, das conversas, das manifesta??es culturais e art?sticas, da sociabilidade em todas as suas dimens?es
Gonzales, Daga José Manuel. "Evaluación de la expresión de Ccna1, Cyp17, StAR y Prm2 en la espermatogénesis de ratones Swiss Rockefeller tratados con Lepidium meyenii Walp. (maca)". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2010. https://hdl.handle.net/20.500.12672/969.
Testo completoLepidium meyenii Walp. (maca) (Brassicaceae) is widely used as a folk medicine, for the ability to enhance the sexual performance in humans, rats and mice, besides to improve the spermatogenesis. However, the way maca acts on spermatogenesis still unclear. In this study, adult male mice were treated with maca aqueous extract during periods of 7, 14 and 21 days, after each treatment, physiological parameters were measured and the expression of cyclin A1 (Ccna1), cytochrome P450 17α-hydroxylase/17,20-lyase (Cyp17), protamine 2 (Prm2) and steroidogenic acute regulatory protein (StAR) (genes involved in spermatogenesis), were recorded. The results shows that maca increased significantly (p less than 0.05) sperm concentration in the three treatment groups, plus Ccna1, CYP17 and Prm2 expression were not significantly affected, while StAR, shows a negative regulation on their expression in groups of 7 and 14 days of treatment. These results suggest, that the mechanism maca increases sperm concentration is not related to increased meiotic activity, or the synthesis of testosterone, but rather the response of a component with androgenic activity present in the aqueous extract of maca, evidenced by the negative effect on StAR expression. These results re-enact the importance of maca as reproductive enhancer without running the risk of increased androgen contraindicated in cases of prostate cancer.
Tesis
SARDÓN, Luis F. Lens. "Estudo galênico de formas plásticas (gel e creme) do extrato bruto de Maca, Lepidium peruvianum CHACON sp. nov.Luis F Lens Sardón". Universidade Federal de Pernambuco, 2012. https://repositorio.ufpe.br/handle/123456789/10275.
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As infecções do trato genital são a causa mais frequente de consulta ginecológica (50-70 % das queixas). Acredita-se que todas as mulheres sexualmente ativas já tiveram pelo menos um episódio de vaginose bacteriana e/ou vulvovaginite. O aumento da resistência das bactérias aos antibióticos convencionais tem estimulado intensos esforços para desenvolver novos agentes antimicrobianos eficazes contra essas bactérias e fungos. O objetivo deste estudo é realizar a produção de formas farmacêuticas plásticas de ação tópica dermatológica e vaginal a partir do extrato seco do hipocotiledon, de Lepidium peruvianum CHACON sp. Nov. = Lepidium meyenii WALP., popularmente conhecida como MACA; esta é uma planta herbácea, bienal ou anual; distribuída basicamente nos Andes Centrais do Peru, em altitudes que vão de 3.500 até 4.500 metros acima do nível do mar. Inicialmente foi feita a identificação botânica e a obtenção de extrato aquoso. Foi realizada a pesquisa de toxicidade da planta; através do teste de toxicidade aguda em camundongos com o extrato bruto, realizado por via intraperitoneal e via oral, a toxicidade foi testada até uma dose de 4.500 mg/kg; e posteriormente foi verificada a ação frente a fungos e bactérias patógenas, comprovando se a ação sobre fungos. Ensaios farmacotécnicos revelaram que o extrato se incorpora perfeitamente nas formulações escolhidas. A determinação das características físicoquímicas dos produtos acabados mostrou que a manipulação não altera qualitativa nem quantitativamente o extrato. Estudos preliminares indicam que as perspectivas de sua utilização nas Indústrias, Cosmética e de Medicamentos são ótimas, pois a utilização destas novas formulações leva a uma diminuição do uso de métodos convencionais, que não raro acarretam ações indesejáveis ao organismo humano.
Macedo, Rayana Garcia de. "Quilombolas e desenvolvimento sustent?vel: an?lise a partir da comunidade Capoeira dos Negros (Maca?ba/RN)". Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18258.
Testo completoQuilombo communities remaining are groups marked by insufficient public assistance and characterized by living in rural and conducting economic activities such as agriculture. The development on a sustainable basis is important to ensure strategies for economic growth and environmental preservation. This work aims to study the remaining Quilombo Capoeira Black community, located in the municipality of Maca?ba, Rio Grande do Norte, considering the principles of sustainable development. Attempt to respond to what level such community can be considered sustainable from an analysis of their social practices. The methodological procedures used consisted of a literature review and documentary, questionnaires, conducting semi-structured interviews and direct observation. The final results show that the family farm has characteristics that approximate the principles of sustainable development, including the diversification of labor, food production with less environmental damage and strengthening the rural environment, and indicate that the main economic activities practiced in Capoeira dos Negros community are agriculture, manufacturing of cassava flour and brick manufacturing, which, in turn, are linked to negative environmental impacts, such as sedimentation pond, groundwater contamination, air pollution and soil erosion. What lead to the conclusion that the social practices of the community are not in line with the dimensions of sustainable development. It is hoped that the survey results provide subsidies for development and implementation of public policies
As comunidades remanescentes quilombolas s?o grupos marcados pela insuficiente assist?ncia p?blica e caracterizados pela viv?ncia no meio rural e realiza??o de atividades econ?micas como a agricultura. O desenvolvimento em bases sustent?veis ? importante para garantir estrat?gias de crescimento econ?mico e preserva??o ambiental. Este trabalho pretende estudar a comunidade remanescente quilombola Capoeira do Negros, localizada no munic?pio de Maca?ba, Rio Grande do Norte, considerando os princ?pios do desenvolvimento sustent?vel. Procurar? responder em que n?vel a referida comunidade pode ser considerada sustent?vel a partir da an?lise de suas pr?ticas sociais. Os procedimentos metodol?gicos utilizados consistiram em revis?o bibliogr?fica e documental, aplica??o de formul?rios, realiza??o de entrevistas semiestruturadas e observa??o direta. Os resultados finais mostram que a agricultura familiar possui caracter?sticas que a aproximam dos princ?pios do desenvolvimento sustent?vel, entre elas, a diversifica??o do trabalho, a produ??o de alimentos com menores danos ambientais e o fortalecimento do meio rural; e indicam que as principais atividades econ?micas praticadas na comunidade Capoeira dos Negros s?o a agricultura, a fabrica??o de farinha de mandioca e a fabrica??o de tijolos, que, por sua vez, est?o ligadas a impactos ambientais negativos, como assoreamento de corpos d ?gua, contamina??o do len?ol fre?tico, polui??o atmosf?rica e eros?o do solo. O que levam a conclus?o de que as pr?ticas sociais da comunidade n?o est?o em conson?ncia com as dimens?es do desenvolvimento sustent?vel. Espera-se que os resultados da pesquisa forne?am subs?dios a elabora??o e implementa??o de pol?ticas p?blicas
Gurgel, Piata de Melo. "Avalia??o do impacto socioambiental de ind?strias t?xteis no rio Jundia? - Maca?ba/RN/Brasil". Universidade Federal do Rio Grande do Norte, 2015. http://repositorio.ufrn.br/handle/123456789/19859.
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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES
A contamina??o dos ambientes aqu?ticos ? um fen?meno que remonta ?s origens das civiliza??es humanas e foi amplificado pelo advento dos processos industriais. A cidade de Maca?ba/RN/Brasil tem como principal corpo h?drico o rio Jundia? que sofre descarga de efluentes de diversas ind?strias. O estudo se bifurcou numa frente de percep??o socioambiental, realizado por meio de entrevistas semiestruturadas cujo efluente t?xtil foi apontado pela popula??o como o principal problema no rio. Observou-se que quase a totalidade dos entrevistados apresentava preocupa??o com o meio ambiente. Al?m disso, h? uma inclus?o dos indiv?duos como parte causadora da problem?tica, pois uma parte significativa reconhece que suas atividades podem causar preju?zos ao ambiente e ? sa?de da popula??o. A partir disto, o monitoramento experimental da qualidade de ?gua foi conduzido por meio de analises f?sicas e qu?micas e ensaios ecotoxicol?gicos que se propuseram a avaliar em Pomacea lineata e em Mysidopsis juniae o efeito isolado do efluente t?xtil e sua influ?ncia no rio em compara??o com os limites estabelecidos pela legisla??o brasileira. Apesar das analises f?sicas e qu?micas demonstrarem-se inconclusivas acerca da participa??o do efluente t?xtil na contamina??o ambiental do rio, os ensaios ecotoxicol?gicos demonstraram-se contundentes ao sinalizar que o efluente pode apresentar risco aos organismos aqu?ticos e consequentemente ? sa?de humana. Assim, por meio de uma abordagem interdisciplinar foi poss?vel estudar a causa do problema socioambiental apontado pela popula??o na fase de percep??o e o efeito mensur?vel com an?lises de qualidade de ?gua no rio por meios dos ensaios mencionados.
The contamination of aquatic environments is a phenomenon that dates back the origins of human civilizations and was amplified by the advent of industrial processes. The Jundia? river , Maca?ba's main water source, suffering discharge of effluents from various industries. The study work?s in two fronts, the environmental perception front was conducted through semistructured interviews whose textile effluent was appointed by the population as the main problem in the river. It was observed that nearly all respondents had concerns about the environment. In addition, there is an inclusion of individuals as the cause of the problem, because a significant part recognizes that its activities may cause damage to the environment and people's health. In other front, the experimental monitoring of water quality was conducted through ecotoxicological tests and physiochemical analysis that proposed to assess Pomacea lineata .Mysidopsis juniae isolated effect of textile effluent and its influence on the river compared with the limits established by Brazilian law. Although the physio-chemical analysis shows is inconclusive about the participation of the textile effluent in environmental contamination of the river, the ecotoxicological tests have shown to blunt the signal that the effluent may present a risk to aquatic organisms and consequently to human health. Thus, an interdisciplinary way it was possible to study the cause of the environmental problem identified by the population in the realization phase and measurable effect on water quality analysis in the river by means of the tests mentioned.
Troya, Santos Jhon Karol. "“Efecto protector y antioxidante de Lepidium meyenii (maca negra) en el aparato reproductor masculino de ratas diabéticas”". Master's thesis, Universidad Nacional Mayor de San Marcos, 2018. https://hdl.handle.net/20.500.12672/8169.
Testo completoEvalúa el efecto protector y antioxidante de la maca en el aparato reproductor de ratas macho diabéticas. Para ello analiza la capacidad antioxidante in vitro del extracto acuoso de la maca negra, determina el efecto hipoglicemiante del extracto acuoso de maca negra, valora los efectos antioxidantes del consumo oral del extrato acuoso de maca en el testículo y el epidídimo de ratas inducidas a diabetes, y examina el efecto protector del consumo del extracto acuoso de maca negra en la histoarquitectura del testículo y a nivel de fragmentación de ADN en espermatozoides de epidídimo de ratas diabéticas.
Tesis
Hadzich, Girola Antonella. "Metabolismo post-cosecha de Maca (Lepidium meyenii, Wapers) durante su secado tradicional e industrial, con énfasis en la formación de amidas". Bachelor's thesis, Pontificia Universidad Católica del Perú, 2016. http://tesis.pucp.edu.pe/repositorio/handle/123456789/7581.
Testo completoTesis
Alvarez, Salazar Evelyn Katy. "Estudio comparativo de la actividad moduladora del extracto metanólico de cuatro ecotipos de Lepidium peruvianum Chacón (maca) sobre la respuesta inmune humoral y celular en ratones". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2008. https://hdl.handle.net/20.500.12672/919.
Testo completo--- Lepidium peruvianum (maca) is a traditional crop in the Central Andes from Peru, it is well-known and employee from pre-Columbian times as a medicinal and nutritional plant. Maca is presented in different ecotypes according to colors of its roots. Previous studies reported that the different ecotypes from maca display differences in their biological activity. The objectives of the present study were: To determine flavonoids, calcium and iron concentration in methanolic extract (EM) of white, purple, red and black ecotypes, to verify the modulatory activity of the methanolic extract of the white, purple, red and black ecotypes on the humoral immune response in mice to sheep red blood cells (SRBC) in normal and inmunosuppressed animals with cyclophosphamide (CP), as well as its effect on the weight and cellularity of the lynphoid organs and peripheral blood cell count. Finally to evaluate the activity of the methanolic extracts of the selected ecotypes on the nitric oxide (NO) production by peritoneal macrophages.
Tesis
Oliveira, Claudia de. "Influência da posição prona, em maca para gestantes, nos parâmetros hemodinâmicos materno-fetais e no conforto da gestante". Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/5/5139/tde-24112015-094855/.
Testo completoIntroduction: Due to the increase of the abdominal volume, the prone position is a difficult and uncomfortable position for pregnant women. Hence, so far, it has not been tested if, in this position, a pregnant woman would have her maternal fetal hemodynamic parameters altered. Objectives: The objectives of this study were to analyze the influence of prone position in maternal-fetal hemodynamic parameters and the comfort of the pregnant woman on a prototype stretcher specially built for pregnant women. Method: A prospective, observational, crossover study with 30 pregnant women in antenatal segment, and 16 non pregnant women as a control group. The two groups were subdivided to take part in two types of randomized sequences of positions, investigating if the change in the order of the sequences would bring a significant alteration in the maternal fetal hemodynamic values. The positions used in this study were: prone, supine position, fowler position and left lateral. The following hemodynamic parameters were assessed: maternal heart rate, systolic blood pressure, diastolic blood pressure, oxygen saturation and respiratory rate and baseline and fetal variability. To the statistical analysis we used the non-parametric analysis for repeated measures and to verify if the position prior to the prone position would have any influence in it and variables of variation were created and compared to the Wilcoxon test. Results: Comparing the prone positions indexes to the other ones obtained, we observed that all the parameters were within the standards of normality and there was no interference in positions prior to the prone position in these values. The pregnant group showed means significantly higher than the ones of the non-pregnant women regarding the heart rate in sequence 1 (p < 0.004) and in sequence 2 (p < 0.001) and respiratory rate in sequence 1 (p= 0.041) and sequence 2 (p= 0.012). In the analysis of the pregnant group we observed that in prone position the systolic blood pressure and the diastolic blood pressure showed lower values than the other in both sequences. In the systolic blood pressure in the pregnant group sequence 1 the comparison of prone position with the fowler position (p < 0.001), with the supine position (p < 0.001) and with the left lateral (p < 0.001) in the pregnant group sequence 2 the comparison of the prone position with the fowler position (p < 0.001) and with the supine position (p= 0.013) it is observed a significant difference. In the diastolic blood pressure in comparison of the prone position in the pregnant group sequence 1 with the fowler position (p < 0.006), with supine position (p= 0.023) and with the left lateral (p= 0.017) and the pregnant group sequence 2 with the fowler position (p < 0.005) and with the supine position (p= 0.008) it is observed a significant difference. To the oxygen saturation in the pregnant group sequence 2 there was a significant difference when compared to the prone position with the fowler position (p= 0.021) and the prone position with the supine position (p= 0.003). In both sequences there were no significant differences in the fetal baseline between prone position with the left lateral. There were not observed any significant variations in the fetal variability in the sequences assessed. All the patients declared having felt comfortable during their stay in each one of the positions. Conclusion: In the prone positioning the maternal-fetal hemodynamic parameters were within the standards of normality and this position on the stretcher especially designed for pregnant women, considered as a safe and comfortable position
VIEIRA, V. A. "A Relação entre o Valor da Maca e a Intenção de Compra pela Perspectiva do Consumidor de Smartphones". Universidade Federal do Espírito Santo, 2018. http://repositorio.ufes.br/handle/10/10449.
Testo completoAtualmente um dos objetos mais utilizados pela população são os smartphones, que permitem que as pessoas tenham em suas mãos ferramentas nunca antes imaginadas. Seu crescimento se deve pelo grande e corrente avanço tecnológico. Atrelado ao ambiente de alta competitividade, os consumidores se tornam cada vez mais rigorosos na escolha de seu produto frente a grande diversidade de opções. Sabendo disso, as organizações tendem a trabalhar melhor a sua marca considerando-a um dos seus ativos mais importantes. Marcas com um maior valor pelo ponto de vista dos consumidores tendem a influenciar a sua intenção de compra. Assim, o objetivo deste estudo é analisar a relação entre a intenção de compra e o valor a marca por meio das suas dimensões: lealdade, qualidade percebida, consciência e associações, utilizando como objeto de estudo grandes marcas de smartphones presentes no mercado. Trata-se de uma pesquisa quantitativa que testou as hipóteses teóricas por meio de Modelagem de Equações Estruturais (Strutural Equation Model SEM), utilizando também a técnica de Análise Multigrupo para comparação entre as marcas. A coleta de dados foi realizada no mês de maio de 2018 por meio de um survey com estudantes universitários de um mercado emergente, obtendo um total de 488 questionários validos. Os resultados das três marcas estudadas (Apple, Samsung e Motorola) demonstraram um efeito significativo entre a Intenção de Compra e as das variáveis Lealdade, Qualidade Percebida e Associações à Marca. Já o construto Consciência da Marca não apresentou um efeito significativo com a intenção de compra. Com a análise multigrupo realizada, foi possível perceber que os respondentes que utilizam a marca Motorola dão mais importância para a percepção de qualidade no seu comportamento de compra de smartphones. Já para os usuários da Samsung, as associações exercem uma relação mais forte com a Intenção de Compra. O modelo contribuiu para analisar as relações entre as variáveis e identificar o comportamento do consumidor em um mercado emergente pouco explorado em pesquisas científicas, indicando que as organizações precisam conhecer melhor os consumidores para desenvolver ações alinhadas com o comportamento dos seus usuários.
Castañeda, Mateo Michael Stalin, e Díaz Rocío del Carmen Castillo. "Factores que influyeron en la caída del precio de exportación de la harina de maca en el año 2016". Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2017. http://hdl.handle.net/10757/622644.
Testo completoPeru is the first exporter of the world of maca, the healthy foods have a good reception, the Peruvian goods are value worldwide, but when the state doesn’t bring importance, the farmer detects it and in that moment where there are gaps between both parts. The price of maca flour increased considerately in 2014 – 2015 and fall in 2016. In 2014 , were Chinese entrepreneurs carry on illegally maca of germplasm detecting the existents of biopiracy. The thesis identify the facts which influenced in the falling prices of maca exportation in 2016, the researching is have split in six parts: Theoretical framework, analysis of research and background; we define concepts, publications, Peruvian legislation, role of the state, statistics, news, interviews and previous theses. We provide a theoretical explanation of the research problem. Research methodology, qualitative, exploratory, explanatory and descriptive; representative and sufficient sample, the segments to be interviewed and a guide of questions by categories. Information obtained from interviews with public and private officials. Analysis of data and results, identifying findings and concrete results. Discussion of results, the theoretical framework versus interviews. The results are the discussion and analysis that we considered were the factors that influenced the fall in the export price of maca flour Conclusions, we validate or reject the hypothesis of the research problem, in compliance with the specific objectives. Recommendations, Improve research findings. Concluding that, the factor that influences the fall of the export price of maca flour in 2016 was biopiracy, generated by Chinese entrepreneurs.
Oré, Sifuentes María Raquel. "Efectos hipolipémico y antioxidante de Lepidium meyenii Walp en ratas". Doctoral thesis, Universidad Nacional Mayor de San Marcos, 2008. https://hdl.handle.net/20.500.12672/3184.
Testo completo--- The “maca” (Lepidium meyenii Walp) is an andean root from Peru, used as a food for its nutricional value and ethnomedical properties, being part of peruvian traditional medicine. The goals of this study were to demonstrate in vitro the antioxidant capacity of aqueous and ethanolic extracts from yellow maca flour and verify the antioxidant and hypolipaemic efect of ecotypes yellow, black, red and bruise of maca over animals that were fed with a hypercholesterolemic diet. Finally, evaluate the unfavorable effect of maca and atorvastatin administration in hypercholesterolomic rats at hepatic level. Tests were performed to measure in vitro the antioxidant capacity of aqueous and ethanol extracts. Sprague-Dowley male rats were used, subjected to a rich-cholesterol diet and distributed in groups according to various treatments, either with different ecotypes of maca or atorvastatin. Lipid profile, vitamins A and C, TBARS-MDA and fibrinogen were measured and statistically analized by Student’s t-test and Tukey. Likewise, through histologic sections the aortic and hepatic tissues from study groups were evaluated.
Tesis
Tavares, Alan Ferreira Pinheiro 1989. "Projeto, construção e teste de protótipo de maca para transporte de crianças de um até dez anos de idades". [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265781.
Testo completoDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
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Resumo: No transporte, por ambulâncias, as crianças estão expostas a riscos fatais ao serem transportadas em macas de adultos as quais não atendem a antropometria infantil. A situação é agravada ao considerar o fato das ambulâncias se locomoverem em altas velocidades e necessitarem frequentemente reduzi-las de modo abrupto. Neste cenário, buscou-se projetar, construir e testar um protótipo de maca com um sistema de retenção eficaz para transportes emergenciais de crianças. O diferencial do projeto em relação às outras macas infantis, existentes no mercado internacional, está na versatilidade de realizar transportes tanto em ambulâncias quanto em áreas de resgate de difícil acesso veicular. O projeto de maca infantil possibilita atender uma ampla gama de pacientes de pequeno porte desde crianças na faixa etária de 1 (um) ano até 10 (dez) anos de idade. Trata-se de uma maca desenvolvida para rápido manuseio e armazenagem por ser dobrável e de fácil instalação sobre qualquer maca de adulto normatizada pela ABNT. O principal fator de segurança está vinculado ao sistema de retenção regulável, com facilidade de rápida fixação e remoção da criança. Foram realizados testes de impacto, com velocidade aproximada de 18 (dezoito) km/h, utilizando a maca de adulto e a maca infantil. O manequim com massa de 22 kg, representativo de uma criança de 6 (seis) anos de idade, foi instalado nas posições sentado e deitado. Os dados coletados, via um programa computacional Kinovea adequado para análise de biomecânica, permitiram estimar o deslocamento do manequim com grande precisão. Utilizou-se um aplicativo instalado em um celular com sistema operacional Android para registrar as desacelerações ocorridas no momento do impacto. A maca infantil apresentou uma retenção significativamente superior à obtida com a maca de adulto, tanto no deslocamento da cabeça quanto do tronco do manequim. Na posição deitado, o manequim chegou a ser ejetado para fora da maca, o que nunca ocorreu utilizando a maca infantil. Os testes realizados com o protótipo da maca validaram o projeto e a solução construtiva que estão vinculados a uma patente a ser depositada no Brasil
Abstract: In transportation, for ambulances, children are exposed to fatal risks by transported in adult gurneys that are not adapted to child anthropometry. The situation is escalated when considering the fact that the ambulances move up in high speeds and with frequently need to reduce abruptly velocity. In this field, we tried to design, build and test a prototype gurney with an effective restraint system for emergency transport children. The differential of the project regards to other children gurneys that exist in the international market; its versatility to perform both transport in ambulances and possible land rescue. Child gurney enables a wide range of small patients from children with one (1) until ten (10) years old, designed for fast handling and storage by be foldable and easy to install on any adult gurney standardized by ABNT. The main safety factor is linked to the adjustable retention system with facility for rapid attachment and the child's removal. Impact tests were performed, with an approximate speed of 18 (twenty) km / h, using the adult gurney and child gurney. The dummy with mass 22 kg, representing a child with 6 (six) years old, was installed in sitting and lying positions. Data collected via a computer program Kinovea suitable for biomechanical analysis, allowed to estimate displacement of the dummy with great precision. It was used a smartphone based on Android operational system to register decelerations occurred on impact. Child gurney had a higher retention regarding to adult gurney both the displacement of the head when the dummy torso restraint. In two teste with lying position, the dummy was ejected out of the gurney, fact that had never happened with child gurney. Tests conducted with the prototype gurney validated the project and the constructive solution that are bind to a patent to will be implanted in Brazil
Mestrado
Materiais e Processos de Fabricação
Mestre em Engenharia Mecânica
Sanabria, Gerby Giovanna Rondán. "Caracterização parcial de carboidrases, morfologia do grão de amido e composição centesimal de raízes de maca (Lepidium meyenii Walpers)". Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/9/9131/tde-18092007-103101/.
Testo completoMaca is an aromatic root that contends 52 to 76 per cent of carbohydrates and is very stable for a long period without signals of deterioration. The degradation mechanisms of the reserve carbohydrates and the cell wall components by enzymatic way had not been described yet. The main objective of this study was the identification of inner enzymes which degrades the starch and the pectins; the others objectives were the analysis and the morphology of the starch grains as well as the root\'s contend composition. The results showed that was obtained the partial purification of a β- amylase, characterized by the molecular mass of 57 kDa, with a highest activity at 40.7 °C and pH 5.1. The pectinesterease was extracted with a pH of 6.0 and its maximum activity was at 49.4 °C and pH 6.6; the polygalacturonase was extracted with a pH of 8.5 and its top activity was achieved at 46 °C and pH 5.4. The total contend of starch was 8.92 % and the grains had an oval morphology observed by SEM.
Costa, Heloise Andrielly Nascimento. "Caracteriza??o fitossociologica de um fragmento de floresta estacional decidual relacionado ao gradiente de altitude em Maca?ba-RN". PROGRAMA DE P?S-GRADUA??O EM CI?NCIAS FLORESTAIS, 2017. https://repositorio.ufrn.br/jspui/handle/123456789/23625.
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A delimita??o das Florestas Estacionais deve ser realizada incluindo v?rios aspectos, como solo, relevo e vegeta??o. No Nordeste brasileiro, a Floresta Estacional Decidual ocorre em zona de contato entre a Caatinga, o Cerrado e a Mata Atl?ntica, sendo faixas estreitas e transicionais. No RN ocorre uma versatilidade florestal entre esses ecossistemas. A varia??o de altitude ? um fator importante de mudan?as de padr?es vegetacionais, no entanto pouco estudada em florestas nacionais e locais. O estudo foi realizado em uma ?rea de floresta decidual no munic?pio de Maca?ba. Esta foi dividida em 4 cotas, com diferen?a de 19 m de altitude entre elas. Foram coletados dados flor?sticos e fitossociol?gicos. Foi inventariado um total de 449 indiv?duos distribu?dos em 69 esp?cies, 49 g?neros e 36 fam?lias, sendo a fam?lia mais representativa a Fabaceae com 11 esp?cies e 164 indiv?duos, seguidas por Myrtaceae (10 esp?cies e 98 indiv?duos) e Malpighiaceae (4 esp?cies e 10 indiv?duos). As esp?cies Chamaecrista ensiformis (Vell.) H.S. Irwin & Barneby, Guapira laxa (Netto) Furlan e Zanthoxylum syncarpum Tul. obtiveram os maiores ?ndices Fr: 50, 45 e 50 e VI: 25,11%; 17,09% e 19,58% respectivamente. Nenhuma esp?cie ocorreu ao longo de todo gradiente, havendo uma entrada e sa?da de t?xons constante. Os valores da DCA foram de -0,851 e - 6,8794; os ?ndices de J?, 0,8432, (C) 0,9533 E H?3,532; C2 apresentou os melhores valores para todos os ?ndices analisados, evidenciando um excelente estagio de conserva??o e fitofisionomia relacionada ? Mata Atl?ntica; C1 e C4, apesar da dist?ncia, apresentam fitofisionomia da Caatinga e do Cerrado, enquanto C3 apresenta t?xons de ampla distribui??o entre os biomas nacionais. Assim, observa-se uma significante dissimilaridade na estrutura vegetacional de modo suave e cont?nuo.
The delimitation of Deciduous Forests should be done including several aspects, such as soil, relief and vegetation. In the Brazilian Northeast, the Decidual Seasonal forest occurs in a contact zone between the Caatinga, the Cerrado and the Atlantic Forest, being narrow and transitional bands. In the RN there is a forest versatility between these ecosystems. The altitude variation is an important factor of changes in vegetation patterns, however not deeply studied in national and local forests. The study was carried out in an area of deciduous forest in the county of Maca?ba, which was divided into 4 zones with a difference of 19 m of altitude between them, floristic and phytosociological data were collected. A total of 449 individuals distributed in 69 species, 49 genus and 36 families were inventoried. Fabaceae family was the most representative one with 11 species and 164 individuals, followed by Myrtaceae (10 species and 98 individuals) and Malpighiaceae (4 species and 10 indivisuals). Chamaecrista ensiformis (Vell.) H.S. Irwin & Barneby, Guapira laxa (Netto) Furlan e Zanthoxylum syncarpum Tul species obtained the higher indexes Fr: 50, 45 e 50 e VI: 25,11%; 17,09% e 19,58% , repectively. No species occurred along the entire gradient, with a constant input and output of taxa, DCA values was -0,851 e -6,8794, the indexes de of J?0,8432 , (C) 0,9533 E H?3,532; C2 presented the best values for all analyzed indexes evidencing an excellent stage of conservation and phytosanation related to the Atlantic Forest. Ci and C4 in spite of the distance they present Phytophysiognomy of Caatinga and Cerado; While C3 presents taxa of wide distribution among the national biomes. Thus a significant dissimilarity in the vegetative structure is observed in a smooth and continuous way.
Santos, Raquel Francisco dos. "Rupturas e continuidades do sistema de Produ??o Agroecol?gica Integrado e Sustent?vel-PAIS em Maca?ba, RN". PROGRAMA REGIONAL DE P?S-GRADUA??O EM DESENVOLVIMENTO E MEIO AMBIENTE - PRODEMA, 2014. https://repositorio.ufrn.br/jspui/handle/123456789/22740.
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O PAIS ? uma tecnologia social criada para desenvolver a agricultura familiar por meio de padr?es agroecol?gicos, integrando em um mesmo sistema a produ??o de animais, hortali?as, frutas, cereais e adubo org?nico. Agricultores em diversas regi?es do pa?s tem recebido unidades do PAIS atrav?s da iniciativa do SEBRAE, Funda??o banco do Brasil e Minist?rio da Integra??o Nacional. Entretanto, existe um impasse que vem sendo observado ao longo do tempo: o fato de haver uma grande disparidade em rela??o ao desempenho desse sistema entre as unidades implantadas. O presente artigo faz uma an?lise dos principais fatores que contribuem para o desenvolvimento da tecnologia social PAIS, tendo por base, estudos executados em unidades j? implantadas no munic?pio de Maca?ba, regi?o metropolitana de Natal, RN. Atrav?s do m?todo comparativo foi poss?vel observar algumas diferen?as e semelhan?as entre as situa??es analisadas, em que, duas delas s?o comunidades onde houve desist?ncia da produ??o pelo PAIS e as outras duas s?o assentamentos em que h? uma produ??o crescente de alimentos atrav?s do mesmo sistema. Os resultados da pesquisa demonstram que, os fatores que mais influenciaram na desist?ncia ou perman?ncia dos agricultores na produ??o com o PAIS foram quest?es relacionadas a organiza??o comunit?ria e fatores ligados a sufici?ncia ou insufici?ncia de ?gua nos per?odos de estiagem.
O PAIS ? uma tecnologia social criada para desenvolver a agricultura familiar por meio de padr?es agroecol?gicos, integrando em um mesmo sistema a produ??o de animais, hortali?as, frutas, cereais e adubo org?nico. Agricultores em diversas regi?es do pa?s tem recebido unidades do PAIS atrav?s da iniciativa do SEBRAE, Funda??o banco do Brasil e Minist?rio da Integra??o Nacional. Entretanto, existe um impasse que vem sendo observado ao longo do tempo: o fato de haver uma grande disparidade em rela??o ao desempenho desse sistema entre as unidades implantadas. O presente artigo faz uma an?lise dos principais fatores que contribuem para o desenvolvimento da tecnologia social PAIS, tendo por base, estudos executados em unidades j? implantadas no munic?pio de Maca?ba, regi?o metropolitana de Natal, RN. Atrav?s do m?todo comparativo foi poss?vel observar algumas diferen?as e semelhan?as entre as situa??es analisadas, em que, duas delas s?o comunidades onde houve desist?ncia da produ??o pelo PAIS e as outras duas s?o assentamentos em que h? uma produ??o crescente de alimentos atrav?s do mesmo sistema. Os resultados da pesquisa demonstram que, os fatores que mais influenciaram na desist?ncia ou perman?ncia dos agricultores na produ??o com o PAIS foram quest?es relacionadas a organiza??o comunit?ria e fatores ligados a sufici?ncia ou insufici?ncia de ?gua nos per?odos de estiagem.
Rubio, Pérez Vanessa Madelein. "Efecto de la adición de maca (Lepidium meyenii) en la dieta, sobre las características seminales del semen de alpacas". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2019. https://hdl.handle.net/20.500.12672/12672.
Testo completoPerú. Consejo Nacional de Ciencia y Tecnología. Fondo Nacional de Desarrollo Científico y Tecnológico (Fondecyt). 149-2017
Tesis
N?brega, Jane Suely de Melo. "Avalia??o das a??es do N?cleo de Apoio ? Sa?de da Fam?lia (NASF) em Maca?ba/RN". Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17827.
Testo completoThis research evaluated the contribution of the Support Center for Family Health (SCFH) in relation to its effect on the Family Health Units through perception of the Family Health Strategy (FHS) and SCFH professionals, in addition to the satisfaction of users in relation to that role. Data were collected in the public health services of the city of Maca?ba-RN in 2012, through semi-structured questionnaire and non participant systematic observation and it counted as investigated subjects 272 individuals (60 FHS professionals, 12 SCFH professionals and 200 users representatives of 20 units). For analysis of the responses of the opened questions was used categorization process and, in relation to the observational method, that was based on checking the space organization, the characteristics of the participating subjects and the specific set of activities performed by SCFH teams through an observation guide. The results point to a good acceptance of the SCFH teams role by most FHS professionals who reported active participation in the health units routine, its integration activities to the FHS teams with resolving based health promotion actions. Regarding the SCFH professionals, they also reported positive contribution by participating actively in the units routine with integrated activities to the ESF teams and developing resolute actions. For users, the SCFH brought assurance services with better access to specialized, resolving and welcoming care. Systematic observation ratified data obtained by questionnaire. It was perceived the need to implement actions related to man`s health, to invest in expanding the number of the SCFH teams, the greater supply of medications, improving the regulatory process and planning together as a key strategy to promote a more effective integration between teams SCFH / FHS
Esta pesquisa objetivou avaliar a contribui??o do N?cleo de Apoio ? Sa?de da Fam?lia (NASF) em rela??o ? sua atua??o nas Unidades de Sa?de da Fam?lia por meio da percep??o dos profissionais da Estrat?gia de Sa?de da Fam?lia (ESF) e do NASF, bem como a satisfa??o dos usu?rios em rela??o a esta atua??o. Os dados foram coletados na rede p?blica de servi?os de sa?de do munic?pio de Maca?ba-RN em 2012, utilizando um question?rio semiestruturado e pela observa??o sistem?tica n?o participante, tendo como sujeitos investigados 272 indiv?duos (60 profissionais da ESF, 12 profissionais do NASF e 200 usu?rios representantes das 20 unidades pesquisadas). Para an?lise das respostas subjetivas foi usado o processo de categoriza??o e, em rela??o ao m?todo observacional, este se baseou na verifica??o da organiza??o do espa?o no ambiente, as caracter?sticas dos sujeitos participantes e o conjunto espec?fico das atividades realizadas pelas equipes do NASF segundo um roteiro de observa??o. Os resultados sinalizam para uma boa aceita??o da atua??o das equipes do NASF pela maioria dos profissionais da ESF, os quais relataram uma participa??o ativa do NASF na rotina das Unidades de Sa?de, sua integra??o ?s atividades das equipes da ESF com a??es resolutivas e de car?ter de promo??o ? sa?de. Em rela??o aos profissionais dos NASF, estes tamb?m relataram contribui??o positiva por participarem ativamente na rotina das Unidades integrando-se ?s atividades das equipes da ESF, desenvolvendo a??es resolutivas. Para os usu?rios, o NASF trouxe garantia de melhor acesso aos servi?os com atendimento especializado, resolutivo e acolhedor. A observa??o sistem?tica n?o participante ratificou os dados obtidos pelo question?rio. Foi percebida a necessidade de implantar a??es voltadas ? sa?de do homem, de investir na amplia??o do n?mero de equipes do NASF, na maior oferta de medicamentos, no aperfei?oamento do processo de regula??o e no planejamento conjunto como estrat?gia fundamental de promover uma integra??o mais efetiva entre as equipes NASF/ESF