Dissertations / Theses on the topic 'Maca (plant)'
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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.
Full textCoordena??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
Quispe, Paye Sabina. "Response of three ecotypes of maca (Lepidium meyenii Walp.) to five levels of ovine manure in the community of Yampupata (Manco Kapac province - La Paz)." BYU ScholarsArchive, 2007. https://scholarsarchive.byu.edu/etd/5424.
Full textReyes, 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.
Full textIt 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.
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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.
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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.
Full textLepidium 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.
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García, 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.
Full text--- 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.
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Ayambo, 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.
Full textThe 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
Vahala, Jorma. "Ozone responses - Russian roulette in plant cells?" Helsinki : University of Helsinki, 2003. http://ethesis.helsinki.fi/julkaisut/maa/sbiol/vk/vahala/.
Full textJuárez, 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.
Full textIn 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.
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Marín, 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.
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Arias, Albarracín Juan José, Valverde Luigino Fassioli, and 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.
Full textChoi, Kam-lung Franky, and 蔡錦龍. "Macau history museum complex." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B31982670.
Full textNgai, Yee-hong, and 魏怡康. "Macau Convention & Exhibition Centre." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31983613.
Full textYuen, Kwok-kuen Patrick, and 袁國權. "Macau Grand Prix international community." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31984344.
Full textFlores, 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.
Full textThe 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.
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Chan, Lai Cheong. "Investigation on energy efficiency of electrical power system in Macau Coloane power plant." Thesis, University of Macau, 2012. http://umaclib3.umac.mo/record=b2586280.
Full textRíos, Ccolque Karen Roxana, and 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.
Full text-- 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.
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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.
Full textLepidium 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.
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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.
Full textThe 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.
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Ho, Pui-kei. "New light, old lane conservation plan for Pátio da Claridade Macao /." Click to view the E-thesis via HKUTO, 2004. http://sunzi.lib.hku.hk/hkuto/record/B31473775.
Full textHo, Pui-kei. "New light, old lane: conservation plan for Pátio da Claridade Macao." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B31473775.
Full textAlvarez, 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.
Full text--- 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.
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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.
Full textEvalúa 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.
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Ngai, Siu-kit Joanna, and 魏小潔. "Floating outdoor museum: journey through the historical path of Macau." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B4500965X.
Full textOré, 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.
Full text--- 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.
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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.
Full textPerú. Consejo Nacional de Ciencia y Tecnología. Fondo Nacional de Desarrollo Científico y Tecnológico (Fondecyt). 149-2017
Tesis
Ferreira, Paulo de Tarso de Oliveira. "Caracterização de um vírus baciliforme isolado de Solanum violaefolium transmitido pelo ácaro Brevipalpus phoenicis Geijskes (Acari: Tenuipalpidae)." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/11/11135/tde-09082005-130547/.
Full textSolanum violaefolium is an ornamental Solanaceae, with prostrate, trailing growth cultivated in shaded areas. Plants exhibiting necrotic ringlike spots on the leaves have been found in several gardens and parks at Piracicaba SP. The ringspot symptoms on the leaves is caused by a vírus, named S. violaefolium ringspot virus (SvRSV), and is transmisible by mite Brevipalpus phoenicis (Acari: Tenuipalpidae). Short bacilliform particles are present within the cisternae of endoplasmic reticulum (ER) and often electron dense viroplasm is present in the cytoplasm, characterist of the cytoplasmatic type of Brevipalpus-borne virus. The present study reports some of its biological properties and partial molecular caracterization. SvRSV is easily transmitted to many plant species either by viruliferous B. phoenicis or mechanically, always causing local lesions. Datura stramonium was proved to be better as experimental host. Its physical properties in vitro were: inactivation thermal point 40-45 ºC; final diluition point - 10-3-10-4; longevity in vitro 12 days. Afterwards, its was observed that S. violaefolium plants were infested by B. obovatus that transmitted SvRSV in preliminary assays. Thin sections revealed that SvRSV particles are slightly thinner and sometimes appear very long. In some favorable sections intermediate steps of viral particle morphogenesis by a budding process of the dense material of the viroplasm toward the lumen of ER could be seen. Due to the fragility of the particles, several attempts to purify the virus have failed, despite many protocols tried. It was possible, however, to extract dsRNA from infected tissue of D. stramonium, and two segments of viral genome, respectively with homology to movement protein (mp) and replicase (rep) of some known viruses were obtained. Primers were designed based in these sequences, which amplified by RT-PCR, fragments of DNA of expected size from total RNA extracts from leaves lesions of infected S. violaefolium and D. stramonium. Probes based on obtained sequences hibridizated with ss- and dsRNA from lesions of S. violaefolium and D. stramonium. Preliminary assays of RT-PCR and hybridization did not result in positive reaction with other cytoplasmatic type of Brevipalpus-borne viruses, including citrus leprosis (CiLVC).
Salazar, Samecash Benjamin. "Efecto del suplemento de harina de maca (Lepidium meyenii Walp. 1843) en el peso y talla de terneros de la raza Holstein (Bos taurus)." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2010. https://hdl.handle.net/20.500.12672/1397.
Full textThe effect of Lepidium meyenii “maca” raw flour as a food supplement in Holstein calves (Bos taurus) was achieved in order to assess weight gain, increased size, and performance parameters. It was taken 16 calves, 4 replicates and 4 groups, the supplement Lepidium meyenii flour was given from the fourth day of birth in an amount of 10, 20 and 30g for 30 days. Calves fed colostrum by 6L/day for 3 days; the 4th day was provided 4L/day of whole milk (38 º C) and in the second week it was added commercial feed at a rate of 10g, incrementing it in accord of the consumption of the calf. The rates of growth (weight and height) were monitored weekly to assess the rate of growth. Final weights subjected to statistical analysis (p ≤ 0.05) shows no significant difference for weight gain, further statistical analysis (p ≤ 0.05) final sizes shows no significant difference in the increasing size; however, group T20 had a positive effect on profit of 60,68 k live weight and an increase in height of an average of 82,73 cmhigher than control (53, 93 and 82, 01 cm, respectively) in an 30 days treatment.
Tesis
Aguirre, Ramos Edwin Alonso, Suarez Lilian Marlene López, and Barrios Zoila Patricia Quiroz. "Plan de negocio para una empresa de comercialización y producción de harina y galletas de linaza, quinua, maca y tarwi para Lima Metropolitana." Master's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/655572.
Full textThis document “Plan de Negocio para una empresa de Comercialización y Producción de harina y galletas de Quinua, Linaza, Maca y Tarwi para Lima Metropolitana", consists in the elaboration of a Business Plan for trading healthy products for families in Lima, this business is dedicated to buy products like quinoa, bruise, linseed and tarwi, from Junin farmers. Then we transform in flour and cookies with varied flavors. This business not only offers a quality product but also quality in the delivery service through strategic alliances with suppliers that provide this service. The main reason why we development this business plan is because we find the opportunity to provide well-being and health to the Peruvian population through our healthy products and we also help social organizations once the client acquires our product. Another reason is we want to reduce the environment impact through biodegradable materials. Another reason that supports this investment decision is because we will be a company seeking to have a lower environmental impact through the use of biodegradable packaging. Finally, through the financial instruments, the project has been evaluated, demonstrating its viability. Once the Free Cash Flow was drawn up, the cash flow discount was made where the result was a positive NPV and an IRR greater than the WACC.
Trabajo de investigación
Ignacio, Medina Juan Alexis. "Plan de negocios para la creación de una empresa especializada en la producción de salsa macha." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2021. http://hdl.handle.net/20.500.11799/110819.
Full textAgramonte-Mendiola, Diego-Armando, and Leonardo-Israel Ronceros-Mac-Kay. "Estudio de prefactibilidad para la instalación de una planta productora de bebida energética gasificada a base de maca negra, hoja de coca y arándano." Bachelor's thesis, Universidad de Lima, 2016. http://repositorio.ulima.edu.pe/handle/ulima/3205.
Full textThe purpose of the present investigation is the study for the installation of a production plant of gasified energy drink, a refreshing soft drink made with black maca, coca leaves, and blueberries; resources from the Peruvian regions of Junín, Cusco and La Libertad respectively. The product constitutes a healthy alternative to the wrongly called “energy” drinks that are only stimulators; this alternative possesses health benefits and properties, apart from being a real energy drink, which guaranties a sustained energy release.
Trabajo de investigación
Castañeda, Alarcon Malena Liuva. "Evaluación de la actividad fotoprotectora in vitro y efecto fotoprotector in vivo de una formulación a base de extracto acuoso liofilizado de Lepidium meyenii (Maca)." Master's thesis, Universidad Nacional Mayor de San Marcos, 2019. https://hdl.handle.net/20.500.12672/11578.
Full textTesis
Harms, Nathan Earl. "Comparison of Heteranthera Dubia (Jacq.) MacM.-associated Macroinvertebrates Between Georgraphical Regions in the United States." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc28427/.
Full textDurand, Goyzueta Miguel Angel. "Transmisión y valoración de los conocimientos tradicionales de la “maca” Lepidium meyenii walp. (Brassicaceae) en los andes centrales del Perú y su distribución potencial." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2017. https://hdl.handle.net/20.500.12672/7234.
Full textTesis
Quispe, Mascco Jenny Mariella. "Respuesta inmune humoral y celular a la vacuna contra la hepatitis B en individuos sanos tratados con maca pulverizada (Lepidium peruvianum Chacón, ecotipo amarillo)." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2010. https://hdl.handle.net/20.500.12672/11093.
Full textTesis
Solano, Medina Nansi Marsela. "Evaluación de ocratoxina A, plomo, mercurio e identificación de hongos micotoxigénicos en la harina de maca (Lepidium meyenii Walp.)." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2022. https://hdl.handle.net/20.500.12672/17867.
Full textGutiérrez, César. "Propuesta de plan de marketing de Herceptin Subcutáneo." Tesis, Universidad de Chile, 2012. http://www.repositorio.uchile.cl/handle/2250/117151.
Full textGutiérrez, César [Parte II]
Autor no autoriza el acceso a texto completo de su documento
A continuación se presentan los posibles escenarios para el desarrollo de la nueva presentación subcutánea de Herceptin, la cual tiene como base el mantener su estrategia de enfoque por diferenciación, caracterizando las mejoras continuas del producto y no su precio. Posteriormente se exponen las fortalezas y debilidades derivadas de la información del entorno, donde se identifica que Herceptin subcutáneo es la forma más rápida de aplicar un medicamento para cáncer de mama y como debilidad la falta de experiencia de los stakeholders con medicamentos subcutáneos. Los objetivos de ventas están enfocados principalmente en el sector público, esperándose un crecimiento de 122%, esto, gracias a la apertura de protocolos de tratamiento con Herceptin que determinan las bases para el tratamiento de cáncer de mama tipo HER2+. Se determinaron los mercados objetivos, divididos en macro y microsegmentos, en los cuales se buscarán alcanzar los objetivos de marketing (tasa conversión de Herceptin IV a SC en un 24%) por medio de estrategias enfocadas en neutralizar los nuevos competidores que entran al mercado, pero en presentación intravenosa (IV). Por último, se determina la estrategia de posicionamiento gracias a los estudios de análisis multidimensional y análisis factorial, los cuales dan las bases para descifrar el posicionamiento de las principales terapias (en el cáncer de mama) en la mente de los médicos, así como los atributos que ellos valoran de éstos, en los cuales, se debería dar más importancia a la hora de determinar las tácticas en terreno para transmitir el mensaje promocional.
Marcelo, Rojas Alan Roger. "Diseño de un plan HACCP para elaboración de cápsulas de harina de maca negra (Lepidium meyenii Walp) en el área de sólidos del Laboratorio Fitogreen S.A.C." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2022. https://hdl.handle.net/20.500.12672/17870.
Full textAlvarez, Salazar Evelyn Katy. "Producción de mRNA para citoquinas hematopoyéticas (IL-3, GM-CSF e IL-7) en ratones inmunosuprimidos tratados con extracto acuoso de Lepidium meyenii walpers (maca)." Master's thesis, Universidad Nacional Mayor de San Marcos, 2013. https://hdl.handle.net/20.500.12672/14199.
Full textDetermina las propiedades antitumorales e inmunomoduladoras del Lepidium meyenni (maca), que lo convierten en un excelente candidato para investigar su actividad hematopoyética. Se trataron ratones Balb/c a dosis de 200 mg/kg de extracto acuoso (EAc) de maca amarilla por vía oral durante 2 meses previo a la inmunosupresión (IS) con ciclofosfamida (CF), y se evaluó la producción de mRNA para las citoquinas hematopoyeticas: interleuquina 3 (IL-3), factor estimulador de colonias de granulocitos y monocitos (GM-CSF) e interleuquina 7 (IL-7) en el bazo y la médula ósea, tanto en los ratones tratados como en sus controles. Se realizaron cultivos de células mononucleares de médula ósea y se evaluó el efecto del EAc sobre la proliferación celular y producción de mRNA para las 3 citoquinas hematopoyéticas. La administración de EAc en ratones IS, incrementó (p<0.05) la producción de mRNA para las tres citoquinas en el bazo y de IL-7 en la médula ósea, dos días después de la IS; e IL-3 y GM-CSF en la médula ósea 5 días post-IS, al compararlos con los grupos no tratados con el extracto. En cultivos de médula ósea, el EAc en la dosis de 100 µg/ml, estimuló (p<0.05) la proliferación celular y la producción de mRNA para IL-7. Además, los ratones IS y tratados con EAc mostraron mayor recuento de células de médula ósea, sangre periférica, unidades formadoras de colonias endógenas en el bazo (CFU-S) y respuesta proliferativa a mitógenos de los linfocitos, cinco días después de la IS. El EAc de maca estimula la producción de mRNA para las tres citoquinas hematopoyéticas. La administración de EAc a ratones inmunocomprometidos puede revertir los efectos supresores de la ciclofosfamida.
Consejo Nacional de Ciencia, Tecnología e Innovación Tecnológica
Tesis
Prudencio, Quiroz Jacqueline Marleny, and Arroyo Estefany Viviana Bustamante. "Determinación in vitro de la actividad fotoprotectora UVB en una crema de protección solar formulada con extracto hidroglicólico de Lepidium meyenii (maca)." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2018. https://hdl.handle.net/20.500.12672/7820.
Full textDetermina la actividad fotoprotectora UVB in vitro en una crema de protección solar formulada con extracto hidroglicólico de Lepidium meyenii “maca”. Se evalúa la actividad antioxidante in vitro del extracto, mediante el método del DPPH. Se realizan siete formulaciones: una con benzofenona-3 (F1), tres con el extracto a diferentes concentraciones (F2, F3 y F4) y se compara con tres formulaciones conteniendo un potenciador de FPS llamado booster (Argania spinosa “argán”, Tocoferol acetato y Bisabolol) (F5, F6 y F7). Se determina la actividad fotoprotectora UVB in vitro por el método de Mansur. Se obtiene un IC 50 de 14,85% para el extracto y 6,06% para el booster, las concentraciones usadas de extracto y del booster en las formulaciones son 1%, 5% y 10%. Se encuentra un aumento significativo de las medias del FPS de las formulaciones que contienen el extracto de maca. De esta manera se demuestra que el extracto de maca tiene actividad fotoprotectora, siendo una especie de interés para la fitocosmética y la fotoprotección.
Tesis
Rifi, Mohamad Azzam. "Propagation d'ondes dans un canal plan en presence d'ecoulement." Poitiers, 1987. http://www.theses.fr/1987POIT2318.
Full textLiang, Qing You. "Study on supercritical fluid extraction of aristolochic acids in Aristolochia plants." Thesis, University of Macau, 2007. http://umaclib3.umac.mo/record=b1676801.
Full textRosas, Olguín Marcelo Hugo. "Plan de negocios para la división de soldaduras y máquinas de soldar de Mauricio Hochschild Ingeniería y Servicos de S. A. Antofagasta." Tesis, Universidad de Chile, 2006. http://repositorio.uchile.cl/handle/2250/102827.
Full textWang, Ming Chang. "The application of elementary stiffness matrix decomposition method in stochastic plane stress problems." Thesis, University of Macau, 2009. http://umaclib3.umac.mo/record=b2119803.
Full textFontelles, Camile Castilho. "Paternal pre-conceptional nutrition programs breast cancer risk in rat female offspring: opposing effects of animal- and plant- based high fat diets." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/9/9132/tde-28092016-142616/.
Full textO câncer de mama é um persistente problema de saúde pública. Hipótese intrigante sugere que a suscetibilidade à doença pode ser modulada em períodos precoces da vida, fenômeno conhecido como programação fetal. Nesse sentido, a maior parte dos estudos de programação fetal refere-se à influência materna, dada a intensa interação existente entre mãe e feto tanto no período fetal, quanto na lactação. Entretanto, estudos recentes mostram que a dieta paterna pré-concepcional também tem um papel de grande importância na suscetibilidade da prole à uma série de doenças crônicas não-transmissíveis de origem metabólica. Portanto, o presente projeto de doutorado direto teve como objetivo avaliar se o consumo paterno de diferentes dietas hiperlipídicas, durante o período de desenvolvimento do sistema reprodutivo de ratos machos, aumentaria a suscetibilidade da prole feminina à carcinogênese mamária. Adicionalmente buscou-se avaliar quais mecanismos poderiam estar envolvidos nesse processo. Utilizaram-se ratos machos da linhagem Sprague-Dawley (n=20/grupo) que consumiram dieta hiperlipídica com 60% de calorias provenientes de lipídeos de banha (grupo LB) ou óleo de milho (grupo CB), ou dieta controle AIN-93G (grupo CO), por nove semanas, durante os períodos de desenvolvimento e maturação sexual. Esses ratos foram acasalados com fêmeas, que consumiram apenas dieta comercial, na proporção 1:1. Sua prole de 50 dias foi submetida ao modelo de carcinogênese mamária com o uso de 7,12-dimetil-benza[a]antraceno (50mg/kg). O consumo paterno de dietas hiperlipídicas de origem animal ou vegetal conferiram efeitos opostos, com o consumo de dieta com alto teor de ácidos graxos saturados (LB) aumentando e o consumo de dieta com alto teor de ácidos graxos poli-insaturados n-6 (CB) diminuindo o risco de desenvolvimento de câncer de mama na prole feminina. Esses efeitos foram associados à alteração da expressão de 89 miRNAS no espermatozoide dos pais e 23 miRNAs na glândula mamária da prole, com sobreposição de 3 miRNAs (miR-1897-5p, miR-219-1-3p e miR-376a#) que estavam alterados em ambos tecidos. Adicionalmente, a prole feminina de machos que consumiram dieta com alto teor de ácidos graxos saturados apresentou menor diferenciação da glândula mamária, maior nível de proliferação celular, menor nível de apoptose e alteração da expressão de proteínas chaves da regulação celular, como na transição epitélio-mesenquimal. Finalmente, essas fêmeas também apresentaram perfil lipídico alterado semelhante à do seu progenitor masculino, bem como modificações epigenéticas que podem estar relacionadas à etiologia do câncer de mama. Assim, concluímos que a dieta paterna hiperlipídica pré-concepcional programou a suscetibilidade da prole feminina à carcinogênese mamária, porém esse efeito é dependente do tipo de ácido graxo consumido e os efeitos observados possivelmente decorrem de alterações no perfil de expressão de miRNAs.
Zelada, Chavez Miguel Angel. "Efecto del extracto acuoso de lepidium meyenii sobre el perfil lipídico y daño oxidativo en ratas ovariectomizadas." Master's thesis, Universidad Nacional Mayor de San Marcos, 2013. https://hdl.handle.net/20.500.12672/3984.
Full textTesis
Yang, Feng Qing. "Chemical components and quality control of Rhizoma Curcumae orginated from three species of plants." Thesis, University of Macau, 2005. http://umaclib3.umac.mo/record=b1445349.
Full textLima, Jorge dos Santos. "Conveni?ncia e plausibilidade da proposi??o de que justi?a ? harmonia n A Rep?blica de Plat?o." Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/16461.
Full textCoordena??o de Aperfei?oamento de Pessoal de N?vel Superior
This thesis endorses the interpretation that in Plato`s Republic the argument made by Thrasymachus in which justice is the convenience of the most powerful one is implicitly accepted by Socrates. Although Thrasymachus? discussion does not show any similarity with the argument of Socrates, it proposes a sarcastic and ironic comment on political life. Socrates accepts this comment to develop a more refined notion of the category of the most powerful ones. While Thrasymachus assumes that the convenience of the most powerful ones includes the power to subordinate all and everything to their individual pleasures, Socrates admits that the most powerful ones are defined only by their characteristic of being able to hold power in perpetuity. In this context, the main theme of The Republic is that the harmony between the functional classes of the city is convenient for perpetual power. For preservation of harmony, the functional class of the most powerful considers the convenience of forsaking a possible monopoly on pleasure towards a redistribution that promotes harmony, which also makes it convenient for the other classes. Thus, we can explicitly say that the most powerful ones believe in a sense of justice as convenience for everyone, but implicitly believe only in the argument that justice is what is convenient for themselves. Since convenience is what promotes harmony between functional classes, it becomes convenient to Socrates to believe that the understanding justice that the most powerful ones have is not publicly disclosed. The notion that all the speculation of the dialogue between the characters cannot be true, but, at best, only plausible and convenient is also part of the central argument in The Republic. Socrates needs to modify the nature of the functional classes through a targeted program of sexual reproduction and a program of ideological indoctrination so that the proposal to promote harmony through the elements of the city, declaring that justice is in favor of the weakest becomes a more plausible and convenient speech. To make the new system more plausible, Socrates develops a metaphysics based on the mathematical notion of harmony, such metaphysics serving the official rhetoric of the political regime presented by Socrates
Essa tese de doutorado defende a interpreta??o de que n A Rep?blica de Plat?o o argumento elaborado por Tras?maco, no qual justi?a ? a conveni?ncia do mais forte, est? implicitamente aceito por S?crates. Apesar da defesa enfatizada por Tras?maco n?o demonstrar nenhuma afinidade com o argumento de S?crates, ela prop?e um coment?rio ir?nico e sarc?stico sobre vida pol?tica. S?crates aceita esse coment?rio para derivar dele uma no??o mais refinada da categoria dos mais poderosos. Enquanto Tras?maco assume que a conveni?ncia dos mais poderosos inclui o poder de submeter todos e tudo a seus prazeres individuais, S?crates admite que os mais poderosos estejam definidos apenas pela sua caracter?stica de ser capaz de manter o poder em perpetuidade. Nesse contexto, o tema principal d A Rep?blica ? que a harmonia entre as classes funcionais da cidade ? conveniente para poder perp?tuo. Para conserva??o dessa harmonia, a classe funcional dos mais poderosos v? como conveniente renunciar um poss?vel monop?lio sobre prazer em prol de uma redistribui??o que promova a harmonia, o que tamb?m se torna conveniente para as demais classes. Assim, pode-se dizer que os mais poderosos divulgam o sentido de justi?a como sendo a conveni?ncia de todos, mas que implicitamente acreditam somente no argumento de que a justi?a ? o que lhes ? conveniente. Uma vez que a conveni?ncia ? o que promove a harmonia entre as classes funcionais, torna-se conveniente para S?crates a cren?a de que a compreens?o de justi?a dos mais poderosos n?o seja divulgada publicamente. Tamb?m faz parte do argumento central d A Rep?blica a no??o de que toda a especula??o presente no di?logo entre seus personagens n?o pode ser verdadeira, mas, na melhor das hip?teses, apenas plaus?vel e conveniente. S?crates precisa modificar a natureza das classes funcionais atrav?s de um programa direcionado de reprodu??o sexual e um programa de doutrina??o ideol?gica para que a proposta de promover a harmonia atrav?s dos elementos da cidade, sob a alega??o de que a justi?a est? a favor do mais fraco, torne-se o discurso mais plaus?vel e conveniente. Para fazer o novo regime mais plaus?vel, S?crates desenvolve uma metaf?sica fundamentada na no??o matem?tica de harmonia, tal metaf?sica a servi?o da ret?rica oficial do regime pol?tico apresentado por S?crates
Melo, Marcelo Pereira Paiva. "An?lise do conceito de justi?a no di?logo entre Tras?maco e S?crates no Livro 1 da Rep?blica." PROGRAMA DE P?S-GRADUA??O EM FILOSOFIA, 2015. https://repositorio.ufrn.br/jspui/handle/123456789/21707.
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Esta disserta??o tem por objetivo a reflex?o acerca dos sentidos de Justi?a encontrados no Livro 1 d?A Rep?blica, particularmente aqueles inseridos entre os trechos 336c e 354c. Analisa-se tamb?m a possibilidade de que o conceito de Tras?maco da Justi?a como conveni?ncia do mais forte ? uma forma pr?-plat?nica de entendimento da Justi?a que, apropriada por Plat?o, passa a ser v?lida quando se considera o mais forte como sendo virtuoso e orientado ao Bem, situa??o apenas encontrada no contexto da Rep?blica. Desse modo, defende-se que Tras?maco n?o est? inteiramente errado quanto ao seu conceito de Justi?a. Tamb?m se considera a no??o de que a Justi?a, ao longo d?A Rep?blica, seja a harmonia entre os elementos da alma e da Cidade-Estado.
This thesis intends to ponder the concepts of Justice found in The Republic?s book 1, mostly on those between excerpts 336c and 354c. It also considers the possibility that Thrasymachus? concept of Justice ? the convenience of the stronger ? is a pre-Platonic view of Justice that is appropriated by Plato, who makes it valid when considering the stronger to be virtuous and oriented to the Good: such condition of the stronger can only be found on Plato?s Republic. Therefore, this thesis states that Thrasymachus may not be entirely wrong on his concept of Justice. Moreover, this thesis also considers the possibility that Justice, throughout The Republic, is harmony among the soul?s elements and the city?s.
Wong, Livia, and 黃海柔. "A leisure and recreation retreat." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B45009867.
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