Dissertations / Theses on the topic 'Lavanda'
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Silva, Gabriela Lucas da. "Avaliação da atividade antioxidante, antiinflamatória e antinociceptiva do óleo essencial de lavanda (Lavandula angustifolia Mill)." Pontifícia Universidade Católica do Rio Grande do Sul, 2009. http://hdl.handle.net/10923/7657.
Full textIn this study, we evaluated the antinociceptive, antiinflammatory and antioxidant effects of lavender essential oil. The antioxidant activity was tested in vitro and used as screening for subsequent experiments. In animals, the effect of lavender essential oil was compared to those displayed by known antiinflammatory and analgesic drugs (dexamethasone, tramadol and indomethacine). Attempts have been made in order to suggest a probable mechanism of action. Considering the pharmacological potential of the lavender essential oil, we have also investigated its possible toxic effects. We demonstrated that the dose of 0,6 g/kg is well tolerated orally. This dose was considered safe and was used in subsequent experiments. The antiinflamatory activity was tested using two models of acute inflammation: the pleurisy induced by carrageenan and the ear edema induced by croton oil. The inflammatory response evoked by carrageenan and by croton oil were reduced by the pre-treatment of animals with lavender oil. On pleurisy, the drug used as positive control, dexamethasone, was more efficacious. However, in the ear swelling, the antiedematogenic effect of the oil was similar to the obtained for dexamethasone. The antinociceptive activity was tested using the model of pain induced by formalin injection into the hind paw of rats. In this model, lavender oil consistently inhibited nociception and presented a similar effect to tramadol. This finding suggests that the mechanism involved in the antiinflammatory effect of lavender may be related to interference in the system of intracellular second messenger phospholipase C/inositol phosphate. In conclusion, the results of this study reveal remarkable analgesic and antiinflammatory activities for the lavender essential oil. Furthermore, the effectiveness of the oil associated with the low toxicity support the interest for the application of lavender essential oil in aromatherapy, and demonstrated its important therapeutic potential.
Neste estudo, foram avaliadas as atividades antinociceptiva, antiiflamatória e antioxidante do óleo essencial de lavanda. A atividade antioxidante foi testada in vitro e serviu como screening para os experimentos posteriores. Em animais, o efeito do óleo essencial de lavanda foi comparado com drogas analgésicas e anti-inflamatórias conhecidas (dexametasona, tramadol e indometacina, respectivamente). Isto foi feito na tentativa de sugerir um provável mecanismo de ação. Considerando o potencial terapêutico do óleo essencial de lavanda foi realizado também um estudo de toxicidade aguda, no qual foi demonstrado que o óleo essencial de lavanda na dose de 600 mg/kg é bem tolerado oralmente. Esta dose foi considerada segura e utilizada nos experimentos posteriores. A atividade anti-inflamatória foi testada através de dois modelos de inflamação aguda: pleurisia induzida por carragenina e edema de orelha induzido pelo óleo de cróton. As respostas inflamatórias produzidas pela carragenina e pelo óleo de cróton foram significativamente reduzidas após o tratamento com óleo de lavanda. Enquanto na pleurisia a droga usada como controle, dexametasona, foi mais eficaz, no edema de orelha o efeito antiedematogênico do óleo foi similar ao observado para a dexametasona. A atividade antinociceptiva foi testada utilizando o modelo de dor induzida por formalina injetada na pata de ratos. Neste modelo, o óleo de lavanda inibiu a nocicepção espontânea provocada pela formalina e apresentou efeito similar ao tramadol. Esses resultados sugerem que o mecanismo envolvido no efeito anti-inflamatório da lavanda pode estar relacionado a um antagonismo de receptores acoplados a proteína G ou interferência no sistema de segundo mensageiros intracelulares fosfolipase C/fosfato de inositol. Em conclusão, os resultados deste estudo revelam atividades anti-inflamatórias e antinociceptivas do óleo essencial de lavanda. Além disso, essas atividades paralelas à baixa toxicidade encontrada também suportam o interesse para aplicação do óleo de lavanda na aromaterapia e demostram seu importante potencial terapêutico.
Martinez, Josue A. "Lavanda: Connecting Film with the Five Senses." ScholarWorks@UNO, 2013. http://scholarworks.uno.edu/honors_theses/43.
Full textSilva, Gabriela Lucas da. "Avalia??o da atividade antioxidante, antiinflamat?ria e antinociceptiva do ?leo essencial de lavanda (Lavandula angustifolia Mill)." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2009. http://tede2.pucrs.br/tede2/handle/tede/6369.
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In this study, we evaluated the antinociceptive, antiinflammatory and antioxidant effects of lavender essential oil. The antioxidant activity was tested in vitro and used as screening for subsequent experiments. In animals, the effect of lavender essential oil was compared to those displayed by known antiinflammatory and analgesic drugs (dexamethasone, tramadol and indomethacine). Attempts have been made in order to suggest a probable mechanism of action. Considering the pharmacological potential of the lavender essential oil, we have also investigated its possible toxic effects. We demonstrated that the dose of 0,6 g/kg is well tolerated orally. This dose was considered safe and was used in subsequent experiments. The antiinflamatory activity was tested using two models of acute inflammation: the pleurisy induced by carrageenan and the ear edema induced by croton oil. The inflammatory response evoked by carrageenan and by croton oil were reduced by the pre-treatment of animals with lavender oil. On pleurisy, the drug used as positive control, dexamethasone, was more efficacious. However, in the ear swelling, the antiedematogenic effect of the oil was similar to the obtained for dexamethasone.The antinociceptive activity was tested using the model of pain induced by formalin injection into the hind paw of rats. In this model, lavender oil consistently inhibited nociception and presented a similar effect to tramadol. This finding suggests that the mechanism involved in the antiinflammatory effect of lavender may be related to interference in the system of intracellular second messenger phospholipase C/inositol phosphate. In conclusion, the results of this study reveal remarkable analgesic and antiinflammatory activities for the lavender essential oil. Furthermore, the effectiveness of the oil associated with the low toxicity support the interest for the application of lavender essential oil in aromatherapy, and demonstrated its important therapeutic potential.
Neste estudo, foram avaliadas as atividades antinociceptiva, antiiflamat?ria e antioxidante do ?leo essencial de lavanda. A atividade antioxidante foi testada in vitro e serviu como screening para os experimentos posteriores. Em animais, o efeito do ?leo essencial de lavanda foi comparado com drogas analg?sicas e anti-inflamat?rias conhecidas (dexametasona, tramadol e indometacina, respectivamente). Isto foi feito na tentativa de sugerir um prov?vel mecanismo de a??o. Considerando o potencial terap?utico do ?leo essencial de lavanda foi realizado tamb?m um estudo de toxicidade aguda, no qual foi demonstrado que o ?leo essencial de lavanda na dose de 600 mg/kg ? bem tolerado oralmente. Esta dose foi considerada segura e utilizada nos experimentos posteriores. A atividade anti-inflamat?ria foi testada atrav?s de dois modelos de inflama??o aguda: pleurisia induzida por carragenina e edema de orelha induzido pelo ?leo de cr?ton. As respostas inflamat?rias produzidas pela carragenina e pelo ?leo de cr?ton foram significativamente reduzidas ap?s o tratamento com ?leo de lavanda.Enquanto na pleurisia a droga usada como controle, dexametasona, foi mais eficaz, no edema de orelha o efeito antiedematog?nico do ?leo foi similar ao observado para a dexametasona. A atividade antinociceptiva foi testada utilizando o modelo de dor induzida por formalina injetada na pata de ratos. Neste modelo, o ?leo de lavanda inibiu a nocicep??o espont?nea provocada pela formalina e apresentou efeito similar ao tramadol. Esses resultados sugerem que o mecanismo envolvido no efeito anti-inflamat?rio da lavanda pode estar relacionado a um antagonismo de receptores acoplados a prote?na G ou interfer?ncia no sistema de segundo mensageiros intracelulares fosfolipase C/fosfato de inositol. Em conclus?o, os resultados deste estudo revelam atividades anti-inflamat?rias e antinociceptivas do ?leo essencial de lavanda. Al?m disso, essas atividades paralelas ? baixa toxicidade encontrada tamb?m suportam o interesse para aplica??o do ?leo de lavanda na aromaterapia e demostram seu importante potencial terap?utico.
Lavanda, Elena [Verfasser]. "Specialization map between stratified bundles and the pro-étale fundamental group / Elena Lavanda." Berlin : Freie Universität Berlin, 2016. http://d-nb.info/1121007864/34.
Full textCamargo, Maria Fernanda Pires de. "Desenvolvimento de nanoemulsões à base de óleo de maracujá (\'Passiflora edulis\') e óleo essencial de lavanda (\'Lavandula officinalis\') e avaliação da atividade antiinflamatória tópica." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/60/60137/tde-06062008-164634/.
Full textNanotechnology is a phenomenon that applies to mainly all sectors of science and in the cosmetics area the high investment in this field has strengthened the idea that nanotechnology products offer real advantages to consumers. The growing demand of consumers and the advances in knowledge about production and stability of dispersed systems enable the development of differentiated vehicles such as nanoemulsions, which besides the inherent stability, have pleasant sensory aspect, high spread ability and hydration power, in addition they can facilitate the penetration of actives. There are two methods of obtaining nanoemulsions: those that employ low or high energy of emulsification. The use of vegetable oils in cosmetics has been intensely valued, based on the concept that is safe and biocompatible. Passion fruit oil is widely used in cosmetic formulations and lavender essential oil is reported in the literature for healing and anti-inflammatory effects, among others. The aim of this study was to develop nanoemulsion based in passion fruit oil and lavender essential oil in the concentrations of 1.0, 2.0 and 5.0%, from low-energy method of emulsification, not employing heating, and evaluate the influence of the addition of other materials and parameters related to the production method in the system stability and droplets size of nanoemulsions and then evaluate the anti-inflammatory activity of topical nanoemulsion containing 5.0% of lavender essential oil in hairless mice. The results demonstrated that the addition of lavender essential oil in the system caused reduction in the droplets size and increasing in the physical stability and that the method of emulsification used was effective in the formation of stable nanoemulsions. The HLB value, the pair of surfactants, the ratio between aqueous/oily and surfactant phase, the addition of silicones and electrolytes and speed of agitation particularly affect the characteristics and stability of the obtained dispersions. In the accelerated stability tests, there was a significant change in the pH and electrical conductivity values, which is possibly resulting from the hydrolysis of compounds present in the essential oil. The values of zeta potential and droplets size showed no relevant change in 30 days of accelerated stability. In the in vivo evaluation, the nanoemulsion added of 5.0% of the lavender essential oil showed significant results when compared to the other groups, which suggests good perspective on topical use of this oil, which is worthy of further studies to the elucidation of the anti-inflammatory mechanisms involved, the phyto-chemical components responsible for this action and the concentration of use.
Cunha, Meiryland Melo da. "Efeito do óleo essencial de Lavandula angustifolia sobre sintomas da esquizofrenia e extrapiramidais em camundongos." Universidade Federal da Paraíba, 2015. http://tede.biblioteca.ufpb.br:8080/handle/tede/7766.
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Recommended as Complementary Medicine by World Health Organization (WHO), Aromatherapy is widespread around the world and uses 100% pure essential oils to prevent and/or treat health problems. Thus, these oils extracted from plants can be considered innovative tools for the treatment of certain pathologies, including mental disorders, because there is evidence for theirs effectiveness in treating disorders related to the Central Nervous System (CNS), and also has low toxicity and easy access. The most common mental conditions treated include mood disorders, anxiety, age-related cognitive decline, psychotic disorders, stress symptoms and chronic pain. This study aimed to investigate possible antipsychotic effects of essential oils but also verify whether it is able to relieve extrapyramidal symptoms. Males Swiss mice, albinos, weighing 32-49 grams, with approximately 2 months of age were used as experimental subjects. The essential oil Lavandula angustifólia was used through inhalation route (5 minutes). Data were analyzed using Graph Pad Prism, using the one-way ANOVA and the Kruskal-Wallis tests. In all comparisons, p<0.005 was considered statistically significant. In the hypolocomotion test with lavender oil treatment at concentrations of 2.5%; 5% and 10% we observed that ambulatory movement, rearing, number of jumps, rest (sc), distance (cm), velocity (mm/s), clockwise and counter-clockwise rotation the results showed that, in all parameters, there was a potentiation of the hipolocomotor effect of haloperidol. In the catatonia test induced by haloperidol (1 mg/kg intraperitoneal injection) treatment with the essential oil showed significant result (p<0.05) compared with animals pretreated with Haloperidol+Saline (GC-), being able to reduce time of catatonia. In the catatonia test induced by haloperidol via oral administration,also presented effect of statistical significance, it is possible to observe a decrease in catatonia time (s) of the oil group compared to Haloperidol+Saline (GC-) group. In the hyperlocomotion test induced by amphetamine (3 mg/kg intraperitoneal injection), the same parameters of hypolocomotion were observed, however, no statistically significant results were found when we compared the group treated with lavender and the Amphetamine+Saline (GC-) group in most tests. In the stereotypy test induced by apomorphine (20 mg/kg intraperitoneal injection), the treatment with the oil inhibited the stereotyped behavior with p <0.05. In Climbing test induced by apomorphine (same dose and route of administration) the animals treated with lavender decreased the climb behavior level when compared to animals treated with Haloperidol+Saline (GC-). After analyzing the results we can conclude that the essential oil of lavender, administered by inhalation route, can have a similar profile to antipsychotics because both alter neurotransmission involved in schizophrenia.
Preconizada como Medicina Complementar pela Organização Mundial de Saúde, a Aromaterapia está bastante difundida pelo mundo e utiliza Óleos Essenciais 100% puros para prevenir e/ou tratar problemas relacionados à saúde. Assim, estes óleos obtidos de plantas podem ser considerados ferramentas inovadoras para o tratamento de certas patologias, incluindo transtornos mentais, pois têm mostrado eficácia sobre distúrbios relacionados ao Sistema Nervoso Central (SNC), além de possuir baixa toxidade e facilidade de acesso. As condições mentais mais frequentes tratadas incluem transtornos do humor, ansiedade, declínio cognitivo relacionado com a idade, perturbações psicóticas, sintomas do estresse e dores crônicas. O presente estudo teve como objetivo investigar possíveis efeitos antipsicóticos dos óleos essenciais como também verificar se o mesmo era capaz de aliviar os sintomas extrapiramidais. Foram utilizados camundongos Swiss machos, albinos, pesando de 32-49 g, com aproximadamente 2 meses de idade. O óleo essencial utilizado foi Lavandula angustifólia via inalatória (5 minutos). Os dados foram analisados pelo Graph Pad Prism, sendo utilizado o teste one-way ANOVA e o Kruskall-Wallis, os resultados foram considerados significativos quando apresentaram um nível de significância de 5% (p < 0,05). No teste de Hipolocomoção com tratamento do óleo de lavanda (GE) nas concentrações de 2,5%; 5% e 10% observou-se, movimento ambulatório, rearing, quantidade de pulos, de descanso (s), distância (cm), velocidade (mm/s), rotação horária e anti-horária os resultados mostraram que na maioria dos parâmetros houve uma potenciação do efeito hipolocomotor do haloperidol. No teste de Catatonia induzida por Haloperidol (1 mg/kg via i.p) o tratamento com o óleo essencial mostrou resultado significativo (p < 0,05) quando comparado com os animais pré-tratados com Haloperidol+salina (GC-), mostrando-se capaz de reduzir o tempo (s) da catatonia. No teste de Catatonia induzida por Halperidol via oral, também apresentou efeito significativo estatisticamente, é possível observar uma diminuição do tempo (s) de catatonia do GE em relação ao GC-. No teste de Hiperlocomoção induzida por Anfetamina (3 mg/kg i.p) foram observados os mesmos parâmetros da Hiperlocomoção, contudo, não encontramos resultados estatisticamente significativos em relação aos animais tratados com a lavanda e o grupo Anfetamina+Salina (GC-) na maioria dos testes. No teste de Estereotipia induzida por Apomorfina (20 mg/kg i.p) o tratamento com o óleo inibiu o comportamento estereotipado com p < 0,05. No teste do Climbing induzido por Apomorfina, na mesma dose e via de administração, o nível do comportamento de subida dos animais tratados com a lavanda GE diminuiu em relação aos animais tratados com GC-. Diante da análise dos resultados podemos concluir que o óleo essencial de lavanda, administrado por via inalatória, pode ter um perfil semelhante aos antipsicóticos por alterar a neurotransmissão envolvida na esquizofrenia.
Mutarelli, Alessia. "Progetto lavanda: ottimizzazione del servizio attraverso uno studio statistico - gestionale e focus sul fine vita dei pannolini compostabili." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8480/.
Full textSegur-Fantino, Nelly. "Etude du polymorphisme au sein d'une population de lavande (Lavandula angustifolia Mill. ) : détermination de critères précoces de sélection." Nantes, 1990. http://www.theses.fr/1990NANT10VS.
Full textChioca, Lea Rosa. "Avaliação do mecanismo de ação do efeito tipo ansiolítico da inalação do óleo essencial de lavanda em camundongos." reponame:Repositório Institucional da UFPR, 2013. http://hdl.handle.net/1884/31761.
Full textMachado, Marília Pereira. "Micropropagação e composição química do óleo essencial de Lavandula Angustifolia Miller." reponame:Repositório Institucional da UFPR, 2013. http://hdl.handle.net/1884/32229.
Full textCook, Ipenza Antonella, Sierra Paul Renzo Goñi, Torrejón Milenita Yelitza Ríos, Rebaza Karla Paola Rodríguez, and Caldas Renzo Gonzalo Romero. "Kalma." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/652316.
Full textThe following thesis explains the business viability of therapeutic pads based on natural and aromatic seeds (chamomile and lavender) that will help relieve stress, pain and tension in the areas of the shoulders and neck through thermotherapy. The segments to be covered in this project are the socioeconomic levels A, B and C of Lima Metropolitan whose age range is between 18 and 60 years. Our business idea is to sell a therapeutic pad that is easy to use and practical to transport. The sale will be through online channels such as Facebook and Instagram, and in turn will participate in fairs of natural products, relaxation centers and pharmacies. Our product will be delivered in a reusable jute bag which will contain a therapeutic pad and a bottle of aromatic essence at a price of 60 soles. In addition, the business plan and its development, the Concierge, operations plan, human resources plan, marketing plan, corporate social responsibility plan, financial plan and learning obtained throughout the project are further explained.
Trabajo de investigación
FIACRE, CYRIL. "Lavandes et lavandins : mise a jour et essai de positionnement de leurs huiles essentielles en therapeutique." Strasbourg 1, 1987. http://www.theses.fr/1987STR10698.
Full textSilva, Danielle Cotta de Mello Nunes da. "Extração supercritica de plantas aromaticas e medicinais (Lavanda brasileira (Aloysia gratissima), Quebra pedra (Phyllanthus amarus) e Ginseng brasileiro (Pfaffia paniculata) : dados experimentais, composição e avaliação da atividade biologica." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/254894.
Full textTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos
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Resumo: O presente estudo teve como objetivo avaliar o rendimento global de extração, a atividade biológica e os perfis de composição de extratos de lavanda brasileira (Aloysia gratissima), quebra pedra (Phylanthus amarus) e ginseng brasileiro (Pfaffia paniculata), obtidos por extração supercrítica (SFE), hidrodestilação e por extração com solvente a baixa pressão (LPSE) utilizando metanol, etanol e hexano. A lavanda brasileira apresentou o rendimento global de extração (X0) variando entre 2,0 ± 0,1% e 4,0 ± 0,2% (b.u), sendo que o maior rendimento de extrato foi obtido na condição de operação de 50 °C e 300 bar (4,0 ± 0,2%). O rendimento do óleo volátil de lavanda brasileira obtido por hidrodestilação foi de 1,2 ± 0,1%. Os rendimentos dos extratos obtidos por extração a baixa pressão foram: 9,4 ± 0,1% (metanol), 3,3 ± 0,2% (etanol) e 0,8 ± 0,2 %(hexano). Os compostos majoritários presentes no óleo volátil e no extrato SFE de lavanda brasileira foram pinocanfona (13,5 - 16,3%), ß-pineno (10,5 - 12%) e pinocarvil acetato (7,3 - 8,3%), guaiol (6,6 - 8,7%) e bulnesol (3,7 - 4,1%). No óleo volátil a concentração referente a 40% de redução do radical DPPH (Sc40 (óleo 1) (1,8 ± 0,1) × 103 mg/L)) e no extrato SFE a concentração referente a 50% de redução do radical DPPH (Sc50 (SFE) (1,3 ± 0,3) × 103 mg/L) de lavanda brasileira demostraram fraco potencial antioxidante pelo método DPPH (1,1-difenil-2-pirilhidrazina). Já pelo método ORAC o óleo volátil (203 ± 15 micromoles de Trolox/ góleo (µM TE/góleo)) e o extrato SFE (225±18 micromoles de Trolox/ gSFE (µM TE/gSFE)) apresentaram poder antioxidante comprável a rutina o composto de referência. Pelo método da reação acoplada do ß-caroteno/ácido linolênico, a atividade antioxidante (AA) dos extratos de lavanda brasileira variou de acordo com o solvente utilizado (metanol, etanol e hexano) e de acordo com a condição SFE empregada. A atividade antioxidante dos extratos de lavanda brasileira obtidos com solventes orgânicos variou de -5 a 62%; o extrato obtido a 50 °C e 300 bar por SFE apresentou AA, variando entre 119 e 188%; os demais extratos não apresentaram AA pelo método do ß-caroteno/ácido linolênico. A quebra pedra apresentou X0 variando de 0,80± 0,01 % a 3,60 ± 0,04% (b.u) de acordo com as condições de extração (pressão e temperatura), sendo que o maior rendimento de extração foi obtido na condição de operação de 50 °C e 250 bar (3,60 ± 0,04%). Os rendimentos dos extratos obtidos por extração a baixa pressão foram: 10,20 ± 0,04% (metanol), 3,40 ± 0,04% (etanol) e 1,90 ± 0,04% (hexano). Por meio da cromatografia em camada delgada foram confirmadas as presenças de óleo volátil, pigmentos, flavonóides e triterpenos nos extratos SFE e nos extratos LSPE de quebra pedra. Pelo método DPPH de atividade antioxidante o extrato SFE de quebra pedra apresentou fraca AA comparado à atividade dos compostos de referência (butilhidroxitolueno e rutina). De maneira geral, os extratos SFE de quebra pedra apresentaram AA superior à do antioxidante controle ß-caroteno pelo método da reação acoplada do ß-caroteno/ácido linolênico. A atividade antioxidante dos extratos de quebra pedra obtidos com solventes orgânicos variou de 17 a 217%; o extrato SFE obtido a 40 °C e 200 bar apresentou AA em torno de 100% em uma, duas e três horas de reação; os demais extratos SFE (40 °C e 250 bar e 40 °C e 300 bar) apresentaram AA variando de 21 a 66%; os extratos de quebra pedra podem ser considerados antioxidantes naturais com boa estabilidade e efeito prolongado. O ginseng brasileiro apresentou X0 variando de 0,50 ± 0,02% a 1,40 ± 0,07% (b.s) de acordo com as condições de extração (pressão e temperatura), sendo que o maior rendimento de extração foi obtido na condição de operação de 30 °C e 250 bar (1,40 ± 0,07%). Os rendimentos dos extratos obtidos por extração a baixa pressão foram: 8,2 ± 0,8% (metanol), 2,2 ± 0,7% (etanol) e 0,6 ± 0,1% (hexano). Por meio das duas técnicas analíticas utilizadas para os extratos de ginseng brasileiro pode-se verificar a presença desde compostos de baixa massa molecular até compostos com estruturas complexas de alta massa molecular (saponinas, ácidos, triterpenos, esteróis) nos extratos SFE. Os compostos majoritários identificados nos extratos SFE de ginseng brasileiro foram ácido hexadecanóico (0,5 - 27,1%), ß-sitosterol e/ou estigmasterol (1,1 - 20,1%), fitol (6,0 - 30,8%) e hexatriacontane (0,7 - 30,6%). Os compostos majoritários da fração retida na coluna de adsorção, instalada na saída da corrente de solvente foram o para-dietilbenzeno (25,7 - 59,3 %) e o meta-dietilbenzeno (3,4 - 27,1 %). Pelo método DPPH de atividade antioxidante o extrato SFE de ginseng brasileiro apresentou AA 25 vezes menos eficaz que a AA desempenhada pela rutina antioxidante natural. Pelo método da reação acoplada do ß-caroteno/ácido linolênico a AA foi observada para o extrato metanólico, variando de 94 a 117%. Os extratos SFE que apresentaram maior potencial antioxidante foram obtidos a 50 °C e 200 bar e 50 °C e 300 bar, a porcentagem de inibição da oxidação destes extratos variou entre 143 e 246% e manteve-se estável com o tempo de reação. O óleo volátil de lavanda brasileira e os extratos SFE de lavanda brasileira, quebra pedra e ginseng brasileiro, não apresentaram efeito inibitório (atividade antiinflamatória) sobre a lipoxigenase de soja nas concentrações estudadas (4-10 g/L)
Abstract: This present work has as an objective evaluate the global yield of the extraction, biological activity, and the composition profiles of the Brazilian lavender (Aloysia gratissima), quebra pedra (Phylanthus amarus) and Brazilian ginseng (Pfaffia paniculata) extracts, obtained by supercritical extraction (SFE), hydrodistillation and by low pressure solvent extraction (LPSE) using methanol, ethanol e hexane. The brazilian lavender showed a global extraction yield (X0) varying between 2,0 ± 0,1% and 4,0 ± 0,2% (b.u), and the higher extract yield was obtained on 50 °C and 300 bar (4,0 ± 0,2%) of operational conditions. The global yield of the brazilian lavender volatile oil obtained by hydrodistillation was 1,2 ± 0,1%. The global extracts yield obtained by low pressure extraction were: 9,4 ± 0,1% (methanol), 3,3 ± 0,2% (ethanol) and 0,8 ± 0,2 %(hexane). The mainly components present in the volatile oil and in the SFE brazilian lavender extract were pinocamphone (13,5 - 16,3%), ß-pinene (10,5 - 12%) and pinocarvyl acetate (7,3 - 8,3%), guaiol (6,6 - 8,7%) e bulnesol (3,7 - 4,1%). In the volatile oil the relating concentration to 40% of the radical reduction DPPH (Sc40 (oil) (1,8 ± 0,1) × 103 mg/L)) and in the SFE extract the concentration relating to 50% of the radical reduction (Sc50 (SFE) (1,3 ± 0,3) × 103 mg/L) of brazilian lavender demonstrate a weak antioxidant potential by the DPPH (1,1-diphenyl-2-picrylhydrazyl) method. Although by the ORAC method the volatile oil (203 ± 15 µM TE/ goil (µM TE/goil)) and the SFE extract (225±18 µM TE/ gSFE) showed an antioxidant power similar to the rutin the reference component. By the coupled reaction of the ß-carotene/ linolenic acid method, the antioxidant activity (AA) of the brazilian lavender extracts varied according to the utilized solvent (methanol, ethanol and hexane) and according to the SFE condition employed. The brazilian lavender extracts antioxidant activity obtained with organic solvents varied from -5 to 62%; the obtained extract on 50 °C and 300 bar by SFE presented AA, varying between 119 and 188%; the others extracts did not present an AA by the ß-carotene /linolenic acid method. The quebra pedra presented X0 varying between 0,80± 0,01 % to 3,60 ± 0,04% (b.u) according to the extraction conditions (pressure and temperature), the higher extraction yield was obtained on 50 °C and 250 bar (3,60 ± 0,04%) of operational conditions. The global extracts yield obtained by low pressure extraction were: 10, 20 ± 0,04% (methanol), 3,40 ± 0,04% (ethanol) e 1,90 ± 0,04% (hexane). By the thin layer cromatography were confirmed the presence of the volatile oils, pigments, flavonoids and triterpenes in the quebra pedra SFE and LSPE extracts. By the DPPH antioxidant activity method the quebra pedra SFE extract showed a weak AA related to the reference components (t-butyl hydroxyl toluene e rutin). Generally, the quebra perdra SFE extracts presents an AA superior to the ß-carotene control antioxidant by the ß-carotene/linolenic acid coupled reaction method. The quebra pedra extracts antioxidant activity obtained with organic solvent varied from 17 to 217%; the SFE extract obtained on 40 °C and 200 bar presented an AA around 100% in one, two and three reaction hours; the others SFE extracts (40 °C and 250 bar and 40 °C e 300 bar) presented an AA varying from 21 to 66%; the quebra pedra extracts can be considered natural antioxidants with good stability and prolonged effect. The Brazilian ginseng presented X0 varying from 0,50 ± 0,02% to 1,40 ± 0,07% (b.s) according to the extraction conditions (pressure and temperature), the higher extraction yield was obtained on the 30 °C and 250 bar (1,40 ± 0,07%) operation condition. The global extracts yield obtained by low pressure extraction were: 8,2 ± 0,8% (methanol), 2,2 ± 0,7% (ethanol) e 0,6 ± 0,1% (hexane). Trough two analytical techniques utilized for the Brazilian ginseng extracts it can verifies the presence from low molecular mass components until complex structures with high molecular mass. (saponins, acids, triterpenes, sterols) in the SFE extracts. The mainly components identified in the SFE brazilian ginseng extracts were hexadecane acid - 27,1%), ß-sitosterol e/ou stigmasterol (1,1 - 20,1%), phytol (6,0 - 30,8%) e hexatriacontane (0,7 - 30,6%). The mainly retained fraction on the adsorption column, installed on the solvent outlet were (25,7 - 59,3 %) for the p-dietilbenzene and (3,4 - 27,1 %) for the m-dietilbenzene. By the DPPH antioxidant activity method the SFE Brazilian ginseng extract presented an AA 25 times less efficient than the AA performed by the natural antioxidant rutin. By the ß-carotene/ linolenic acid coupled reaction the AA was observed for the metanolic extract, varying form 94 to 117%. The SFE extracts that presented higher antioxidant potential were obtained on 50 °C and 200 bar and 500 °C and 300 bar, the inhibition percentage of these extracts oxidation varied between 143 and 246% and keeps it stable with the reaction time. The brazilian lavender volatile oil and the brazilian lavender, quebra pedra and brazilian ginseng SFE extracts did not present an inhibited effect (anti-inflammatory activity) on the soybean lipoxigenase on the studied concentrations
Doutorado
Doutor em Engenharia de Alimentos
Mambri, Ana Paula de Souza. "Lavandula dentata L. SOB O EFEITO DA RADIAÇÃO SOLAR E DE DIFERENTES ÉPOCAS DE COLHEITA." Universidade Federal de Santa Maria, 2016. http://repositorio.ufsm.br/handle/1/4908.
Full textPlantas do gênero Lavandula são conhecidas por uma variedade de compostos voláteis e empregadas há séculos na fabricação de perfumes e aplicações medicinais. São várias as espécies no mundo com potencial produtivo, como por exemplo, a espécie Lavandula dentata L. cultivada em vários países onde se inclui o Brasil, para fins aromáticos e medicinais. Além da diversidade de variedades, plantas de lavanda são bastante resistentes às condições adversas de clima e temperatura. São muitas as características que as diferenciam desde seus caracteres morfológicos à constituição de seus óleos voláteis que apresentam funções ecológicas bem estabelecidas na planta. Podendo ainda ocorrer uma variação destes compostos intraespecífica, e estas diferenças podem estar associadas às interações da planta com o ambiente, que desencadeiam vários processos bioquímicos que resultam em diferenças tanto na proporção quanto na composição fitoquímica do óleo volátil. Produtos naturais, tais como o óleo volátil vem sendo intensamente estudados, quanto seus aspectos produtivos e atividades biológicas. O presente trabalho teve como objetivo determinar o efeito de duas intensidades da radiação solar, e de diferentes épocas de colheita na produção de fitomassa, rendimento e composição química do óleo volátil de folhas e inflorescências de L. dentata no cultivo sem solo, bem como avaliar a atividade antimicrobiana, genotóxica e antiproliferativa do composto volátil. O experimento foi conduzido em casa de vegetação em sistema fechado, as plantas foram cultivadas com solução nutritiva em vasos de polipropileno contendo areia como substrato. Foram coletadas para cada época folhas e inflorescências para determinar a massa fresca e seca das plantas. O restante das plantas de cada parcela foi utilizado para extração do óleo volátil pelo método de hidrodestilação e a composição determinada por cromatografia gasosa (GC/MS). Foi utilizado o delineamento inteiramente casualizado, os dados de fitomassa e rendimento foram submetidos ANOVA e as variáveis que apresentaram diferença significativa foram determinadas pelo teste de Tukey, e os dados de genotoxidade foram comparados pelo teste Qui-quadrado (X²). Avaliou-se a produção de biomassa da parte aérea e óleo volátil da lavanda sob duas intensidades de radiação (com e sem sombreamento), em três épocas de coleta (150, 213 e 320) dias após o plantio. O óleo volátil foi avaliado quanto o efeito antimicrobiano pelo método de bioautografia e genotoxidade nas concentrações (100%) e (0,05%), respectivamente. O rendimento do óleo, a massa fresca (MF) e seca (MS) de folhas (F) e inflorescências (I) foi afetada pelo sombreamento e pelas diferentes épocas de coleta, a (MFI) foi maior na colheita da primavera (213 DAP) sem sombreamento enquanto a (MFF), a melhor época foi no período de verão (320 DAP), e não houve efeito quanto ao uso do sombreamento 50% para (MF). Porém, houve uma redução dos valores médios de MSF e MSI. A produção de óleo volátil nas folhas foi superior em todas as coletas, realizada no verão, aos 320 DAP. Os constituintes majoritários encontrados no óleo volátil foram 1,8 cineol, cânfora e linalol. O óleo (100%) apresentou atividade antimicrobiana moderada para as bactérias Staphylococcus aureus, Bacillus cereus e Salmonella typhimurium, o óleo volátil (0,05%) de lavanda não apresentou atividade antiproliferativa nem efeito genotóxico.
Tiliacos, Christophe. "Etude phytochimique et valorisation des résidus de l'huile essentielle de lavandin (Lavandula angustifolia x Lavandula latifolia var. Grosso)." Aix-Marseille 3, 1999. http://www.theses.fr/1999AIX30087.
Full textChambon, Catherine. "Application de biotechnologies végétales au genre lavandula, en vue de l'amélioration génétique du lavandin." Vandoeuvre-les-Nancy, INPL, 1992. http://www.theses.fr/1992INPL083N.
Full textErland, Lauren Alexandra Elizabeth. "Enhancement of specialized metabolism, regeneration efficiency and biological activity in lavandin (Lavandula x intermedia cv 'Grosso')." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/52707.
Full textIrving K. Barber School of Arts and Sciences (Okanagan)
Biology, Department of (Okanagan)
Graduate
Lamacque, Lia. "Caractérisation physiologique de la réponse à la sècheresse de la Lavande et du Lavandin : impact de la culture inter-rang." Thesis, Université Clermont Auvergne (2017-2020), 2020. http://www.theses.fr/2020CLFAC012.
Full textFrench Lavender and Lavandin crops are subject to severe dieback, resulting from the interaction between Stolbur's disease and increasingly intense and frequent droughts. Improving the resistance of Lavender plantations is a challenge to safeguard this sector with a strong economic, tourist and social impact on its territory. A project involving partners from research and the Lavender sector aims to increase crop resistance through new practices. Within this framework, the objectives of the thesis were i) to identify physiological indicators of the state of stress, and in particular a physiological threshold of non-recovery, following severe droughts in Lavender and Lavandin and ii) to evaluate the effect of the agro-ecological practice of inter-row cultivation on the response of Lavandin to summer drought. In addition, a study on climate forecasting focused on production departments revealed an increase in summer and autumn temperatures and a decrease in autumn rainfall on the near horizon (2021-2050), confirming the interest of our work for the sector. To continuously monitor the physiological condition of the plants during a drought, PépiPIAF-type dendrometers, which measure variations in stem diameter, were used on these species. Two indices related to the intensity of the drought and the damage caused were thus identified: percentage loss of diameter (PLD) and loss of rehydration capacity (PLRC). Plants did not recover from a drought (PLRC = 100%) when the PLD had reached a maximum value of about 21%. These results mean that the inability to recover occurs when the elastic water storage are empty, thus demonstrating their importance during intense droughts. During dehydration, acoustic measurements and electrolyte leakage showed that this inability was associated with significant cell damage and not a high level of embolism. These two indices developed under controlled conditions also made it possible to diagnose the stress state of lavandins in the field. Dendrometers on lavandins revealed water stress exerted by an inter-crop vegetation cover during the growing season and summer drought. The water stress was earlier with this cover but the intensity of the drought was identical to that with bare soil. In addition to the importance of this work in fundamental research, in particular on the mechanisms of plant mortality, these results open perspectives on the anticipation of mortality in Lavender plantations, and even on the management of irrigation of these crops, for a reasoned control of the hydric stress necessary for the production of essential oils but harmful to the plants according to its intensity and the period
Faustino, Inês Alves. "Clínica médica e cirúrgica em espécies pecuárias e equinos." Master's thesis, Universidade de Évora, 2016. http://hdl.handle.net/10174/19618.
Full textSakiou, Sofia. "Caractérisation, traçabilité et contrôle qualité des huiles essentielles de lavandes et de lavandins : Apports des signatures chromatographiques et spectroscopiques." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4369/document.
Full textLavender and lavandin essential oils (EOs) belong to the heritage of the Mediterranean region. Like any natural or synthetic product with an added value, these EOs must be controlled to justify the quality of the product. This quality control requires the establishment of a reliable analytical methodology. In this study, a new approach using spectroscopic and chromatographic techniques for data processing associated to chemometric tools allows to discriminate lavender and lavandin EOs. This discrimination is carried out thanks to their spectroscopic or chromatographic fingerprints. The interest to use the chiral chromatography combined with polarimetric detection and of acquired chiroptical signature was also studied. This methodology has allowed us to identify metabolomic markers which are paramount to characterize the varieties. The results show that it is possible to discriminate the lavender and lavandin EOs according to their varieties with good accuracy on all of the techniques used
Benabdelkader, Tarek. "Biodiversité, bioactivité et biosynthèse des composés terpéniques volatils des lavandes ailées, Lavandula stoechas sensu lato, un complexe d'espèces méditerranéennes d'intérêt pharmacologique." Phd thesis, Université Jean Monnet - Saint-Etienne, 2012. http://tel.archives-ouvertes.fr/tel-00952695.
Full textGuitton, Yann. "Diversité des composés terpéniques volatils au sein du genre Lavandula : aspects évolutifs et physiologiques." Phd thesis, Université Jean Monnet - Saint-Etienne, 2010. http://tel.archives-ouvertes.fr/tel-00675866.
Full textHéral, Bénédicte. "Approche métabolomique pour l’étude du dépérissement de la lavande : application aux composés non-volatils." Thesis, Université Côte d'Azur, 2021. http://www.theses.fr/2021COAZ4009.
Full textFine lavender and lavandin are historic and emblematic crops of Provence (South-East France). They are cultivated for their aromatic and perfume properties. They represented an important economic value in France. Nevertheless, over the last decades, lavender’s field decline because of the lack of rain fall and a disease name “yellow disease”. This infection lead to phloem-limited bacterial pathogen (Candidatus Phytoplasma solani) and transmitted by a planthopper (Hyalesthes obsoletus). The purpose of this PhD is to study induced chemical defences (i.e. non-volatile organic compounds) in order to better understand interaction between insect, plant and bacteria. To answer this issue, an untargeted metabolomic approach was developed. Four varieties chosen for their sensibility or tolerance against phytoplasma, were used: two lavender (7713, maillette) and two lavandin (abrial, grosso), and 480 samples were collected. Compound extraction was performed by a solid-liquid extraction assisted by ultrasounds with an ethanol-water mixture (50:50, v/v). Afterwards, 1429 extracts were analysed by an UPLC-HRMS (XevoG2 QTOF, Waters). Spectral data was first handle using W4M-Galaxy to obtain a peak table fitting by statistical tools. Next, MetaboAnalyst was conducted to correct data and performed multivariate analyses. PCA was used to visualize trends and outliers. PLS-DA was applied to highlight biological differences between subgroups, to discover the most relevant factors and detected biomarkers. The most discriminant compounds specific to sensitivity/tolerant species as well as to plant symptomatic status (asymptomatic/symptomatic) were annotated. Chlorophyll derivatives, under-expressed in symptomatic plants, are probably health plant status biomarkers
Lavaud, Aurélien. "Extraction et caractérisation de la matière organique soluble des horizons profonds d'un sol arable." Poitiers, 2010. http://theses.edel.univ-poitiers.fr/theses/2010/Lavaud-Aurelien/2010-Lavaud-Aurelien-These.pdf.
Full textThe increase in the atmospheric CO2 concentration due to the combustion of the fossil resources and deforestation is the major environmental problems today. To store carbon and thus to decrease the concentration of CO2 emitted by human activity in the atmosphere, it would be necessary to be able to operate the carbon sinks located in the continental biosphere. The largest carbon surface reservoir of the continental biosphere is the soil, which stores 1500 Mt carbon. The potential of French soil to store carbon is currently being evaluated for the plowed horizon, i. E the first 30 cm. However, recent studies showed that a significant proportion of soil carbon is stored in horizons B and C. The precise role of soluble organic carbon or DOC (Dissolved Organic Carbon) in the stabilization and / or destabilization of carbon deep horizons is indispensable to adapt the methods of land management and cropping systems to increase the stock of carbon in soils. Despite abundant literature, studies on DOC are mainly limited to soils of forest ecosystems and especially in laboratory scale. The results were never confirmed on the ground. The overall objective of this thesis is to better define the proportion of soluble organic matter of different horizons of arable soil and indicate their main structural features. This work takes into account the importance of the mode of cultural practice and the impact of prolonged drought particularly in deep horizons. Different analytical techniques (spectrofluorimetry, chromatography size exclusion, pyrolysis GC / MS, 13C NMR) were used on waters collected at the lysimeter plates and porous candles but also HPO, TPH and HPI extracts, for characterizing the OM of deep horizons, while being based on existing work on surface water. The work showed that the OM of the deep horizons was characterized by low aromaticity, a lower molecular weight and by the presence of compound lignins types and terpenoids
Despinasse, Yolande. "Diversité chimique et caractérisation de l'impact du stress hydrique chez les lavandes." Thesis, Saint-Etienne, 2015. http://www.theses.fr/2015STET4012/document.
Full textThe PhD was focused on lavenders and precisely on lavenders present in France: the fine lavender (Lavandula angustifolia Miller), the spike lavender (Lavandula latifolia Medik) and their hybrid the lavandin (Lavandula x intermedia). Skilled to synthetize huge organic volatils coumpounds (COV) amount and in particular volatils terpene such mono- and sesquiterpenes, lavenders are used by human from antiquity for medicinal and aromatic properties of these volatils terpenes, lavender essential oil is composed of. Due to economical and ecological volatils terpenes importance, several study aspects is considered in the PhD. In a first hand, on all the fine lavender’s repartition area, relationship between chemical, geographical and genetical diversities was assessed. Results showed chemical and genetical significant different populations, at the border of fine lavender repartition area. In a second hand, hydric stress impact over time on volatiles terpenes content was assessed on the spike lavender, lavandin and six fine lavender populations. Results put in evidence differential tolerances by species and populations; thus lavandin is more quickly affected by hydric stress than the fine lavender. Terpenes contents were slightly impacted by hydric stress and with different states amoung species and populations. Despite huge answer diversities amoung compounds, hydric stress intensity and plants; camphre pathway terpenes (borneol, comphene and camphre) are those which have the more important variations among stressed and controlled plants. Therefore study camphre biosynthesis pathway emerged. In this context, we have identified and characterized the bornyl diphosphate synthase able to produce the borneol from the bornyl diphosphate. These works allow a better understanding of relationships between volatils terpenes production and environment as well as give genetical tools to proceed to further investigations
Stierlin, Emilie. "Développements analytiques et approche métabolomique pour l'étude des composés volatils d'origine végétale : Application à l’étude du dépérissement de la lavande." Thesis, Université Côte d'Azur, 2020. http://www.theses.fr/2020COAZ4008.
Full textIn chemical ecology, the volatile organic compounds (VOCs) involved in plant survival and adaptation to the environment are of major scientific interest. Nevertheless, their study requires the development of high-performance analytical tools due to the low levels of metabolites, the complexity of the mixtures to be analysed and the structural diversity of the molecules of interest.For a few years now, lavender fields are suffering from a severe decline in France due to the propagation of the yellow decline disease, associated with the presence of a bacterium (Candidatus Phytoplasma mali) transmitted by an insect (Hyalesthes obsoletus). The objective of this thesis was therefore to develop methods for trapping and analysing the VOCs potentially involved in the yellow decline disease. This work was carried out on several symptomatic and asymptomatic lavender and lavandin varieties, known to be sensitive or tolerant to the disease. Thus, the compounds emitted by the roots in the laboratory and in the field were characterised for the first time by a metabolomic approach combining solid phase microextracion (SPME) and gas chromatography-mass spectrometry (GC-MS). A second part consisted in applying a dynamic headspace extraction (DHS), automated thermal desorption (ATD), and GC-MS method to trap and analyse the VOCs emitted by the aerial parts of plants directly in their field environment. The VOCs stored in these same aerial parts (inflorescences and leaves) were extracted in hexane by ultrasound assisted extraction (UAE) and analysed by GC-MS. After discriminant analysis (PLS-DA), specific markers for sensitive/tolerant as well as for asymptomatic/symptomatic plants could be identified
Boeckelmann, Astrid. "Monoterpene production and regulation in lavenders (Lavandula angustifolia and Lavandula x intermedia)." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/2804.
Full textCapra, María Elena, Hernán Esteban, Paula Andrea Pérez, and Jorge Robledo. "Lavado de activos." Bachelor's thesis, Universidad Nacional de Cuyo. Facultad de Ciencias Económicas, 2012. http://bdigital.uncu.edu.ar/5213.
Full textFil: Capra, María Elena. Universidad Nacional de Cuyo. Facultad de Ciencias Económicas.
Fil: Esteban, Hernán. Universidad Nacional de Cuyo. Facultad de Ciencias Económicas.
Fil: Pérez, Paula Andrea. Universidad Nacional de Cuyo. Facultad de Ciencias Económicas.
Fil: Robledo, Jorge. Universidad Nacional de Cuyo. Facultad de Ciencias Económicas.
López, Nancy Viviana, and Gladys Ester Martínez. "Lavado de manos." Bachelor's thesis, Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Escuela de Enfermería, 2013. http://bdigital.uncu.edu.ar/10440.
Full textFil: López, Nancy Viviana. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Escuela de Enfermería..
Fil: Martínez, Gladys Ester. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Escuela de Enfermería..
Lang, Cezar Luiz. "Avaliação do uso de areia britada de origem basáltica lavada e não lavada para utilização em concreto à base de cimento portland." Florianópolis, SC, 2006. http://repositorio.ufsc.br/xmlui/handle/123456789/88806.
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A utilização da areia britada em misturas à base de cimento Portland, é uma das alternativas para substituição parcial ou total da areia de rio, devido ao menor custo do transporte ou por questões ligadas ao meio ambiente. Como um produto do processo de britagem, a areia britada apresenta elevado teor de material pulverulento (partículas de dimensão inferior a 0,075 mm). Para atender à prescrição da Norma Brasileira 7211/05, que limita o teor de material pulverulento no concreto, a areia britada passa por um processo de lavagem na planta de britagem, cujo objetivo é reduzir a quantidade de pó do produto. Esse material retirado é descartado em aterros. O objetivo desta pesquisa foi comparar o desempenho de concretos à base de cimento Portland com a utilização de areia britada lavada e não lavada de origem basáltica. Para isso, foram realizadas análises para determinar as características físicas das areias britadas e efetuada a comparação antes e após a lavagem. Com misturas de concreto contendo areia britada lavada e não lavada, foram construídos diagramas de dosagem e verificada a diferença do comportamento no estado fresco e endurecido. Pelos resultados obtidos, considerando-se o método de dosagem e levando-se em conta os parâmetros adotados para caracterização de uso em concreto estrutural, a areia britada não lavada mostrou-se mais adequada, embora não atendendo aos limites de teor de material pulverulento da Norma Brasileira 7211/05.
Naviner, Brigitte. "Routes et paysages de la lavande : essai d'économie politique du paysage." Paris, EHESS, 2002. http://www.theses.fr/2002EHESA105.
Full textThis research tries to understand the invention of the lavender landscape and its transformation into a symbol of Provence. Thus the study presents the history of the lavender production in Provence, and the history of aesthetic appreciation of Provence by the tourists. At the same time this study discusses on landscape, using theoretic models which can explain different moments of the lavender landscapes invention but not the understanding of the all process. The discussion of theses theoretic models shows their complementarity but also a distance between them and the point of view of local actors. In fact the contemporary history of lavender landscape situated in the process of local development reveals its change in an economic product, a public property holder of a local identity. Its close relation with tourism and its economic nature call a new analysis model which won’t consider the landscape as independent but inside a relation between aesthetic, economic and social practices
Castillo, Álvarez Rolando, and Pérez Rodolfo Córdova. "Tecnolavado, cadena de lavado automotriz." Tesis, Universidad de Chile, 2015. http://repositorio.uchile.cl/handle/2250/137000.
Full textRolando Castillo Álvarez [Parte I], Rodolfo Córdova Pérez [Parte II]
El diagnóstico realizado en este plan de negocio se presenta como una Cadena de lavado automotriz que operará bajo la marca Tecnolavado y constituye una importante propuesta de innovación en la ciudad de Antofagasta con una oferta integral que incluye tecnología de punta e infraestructura orientada a la comodidad y satisfacción del cliente. Hoy en día, en Antofagasta es posible observar un 36% de crecimiento del parque automotor en los últimos 4 años, lo cual está por sobre la media nacional. Además, se percibe una importante necesidad de los usuarios por mantener sus vehículos limpios con frecuencias de lavado que han aumentado en los últimos años. Necesidad que cuenta con un bajo nivel de satisfacción producto del alto contraste de la alta demanda por servicios al automóvil en comparación con la escasa oferta de servicios que hoy existe en el mercado. En cuanto al análisis competitivo, se realizó el análisis de las cinco fuerzas de Porter en el cual es posible determinar una industria de servicio de lavado automotriz altamente atractiva con bajos costos de entrada, en la cual se puede ingresar con un negocio que apunte a un servicio de lavado Premium integral con bajo poder de negociación por parte de los clientes, alta amenaza de servicios sustitutos y de proveedores sumado a una baja rivalidad actual entre los participantes. El servicio de los competidores es deficiente desde el punto de vista operacional y también desde una mirada de marketing de servicio, lo cual radica en un importante grado de insatisfacción principalmente en el segmento ABC1. Dado lo anterior, se detecta una gran oportunidad de negocio que motiva la realización de un emprendimiento que resuelva los siguientes problemas: Los clientes deben esperar excesivo tiempo para el servicio de lavado de su automóvil. Infraestructura deficiente con clientes esperando al sol. Inexistencia de servicios asociados que permitan una espera productiva y placentera como Wifi y TV. Tecnolavado ingresará a la industria con un mix promocional basado en Publicidad, relaciones públicas y marketing digital que apuntan a un reconocimiento de marca hoy inexistente en el mercado. El análisis profundo de las tendencias del mercado, la disposición a pago y la posición de los competidores en el mercado, permiten definir recursos y fortalezas que se deben formar e implementar en el negocio eficientemente para lograr ventajas competitivas tales como Economías de escala, ubicación estratégica con el mayor flujo vehicular de la industria y una tecnología de punta en su maquinaria principal con el propósito de conseguir una rentabilidad superior. La propuesta de valor determinada para Tecnolavado se sustenta en los ejes de valor que corresponden a calidad en el servicio, el cual contempla un protocolo profesional orientado 100% al cliente, el tiempo de servicio más rápido del mercado producto de contar con tecnología de punta y procesos operacionales más eficientes y una infraestructura orientada a la comodidad con recursos como wifi, aire acondicionado, sillones cómodos y otros a disposición del cliente. Finalmente el análisis financiero de la evaluación de este negocio, considera un horizonte de planificación de 10 años e indica que se requiere una inversión de $816.751.779, un IVA de la inversión de $155.876.338, gastos previos a la operación de $86.755.799, un capital de trabajo de $5.611.398 y un déficit operacional de $92.715.862 para obtener un VAN de $1.793.411.598 y una TIR de 47,2%, considerando una recuperación de la inversión al mes 27 de la operación.
Figueiredo, Bruna Kauffmann. "Caracterização química dos óleos essenciais de Lavandula angustifolia e Lavandula dentata, ensaios “in vitro” e aplicação em nanoemulsões /." Araraquara, 2019. http://hdl.handle.net/11449/191229.
Full textResumo: O óleo essencial da lavanda tem sido usado amplamente nas indústrias cosmética e farmacêutica, demonstrando várias propriedades terapêuticas, tais como analgésica, anti-inflamatória, cicatrizante, antimicrobiana e antifúngica; porém, sua lipofilicidade dificulta a incorporação em formulações de matriz aquosa. Deste modo, a nanotecnologia vem surgindo como uma estratégia para melhorar o desempenho de ativos contidos nos cosméticos, e buscar sua aceitação pelo consumidor. Os objetivos deste trabalho foram: avaliar a citotoxicidade e o potencial cicatrizante, bem como a atividade antioxidante, dos óleos essenciais de Lavandula angustifolia e Lavandula dentata, utilizando metodologias in vitro, e obter e caracterizar nanoemulsões contendo esses óleos. Também foram realizadas a identificação e a quantificação das substâncias químicas presentes nos óleos essenciais. No que diz respeito à eficácia, a atividade antioxidante foi analisada pela metodologia de inibição dos radicais DPPH• e ABTS•+, e o potencial cicatrizante pela avaliação do estímulo da produção de colágeno em células da linhagem HDFa. A citotoxicidade dos óleos também foi analisada, através da metodologia com o corante MTT, e as nanoemulsões foram obtidas pelo método de baixa energia, sob temperatura ambiente, determinando primeiramente o EHL de cada óleo para, em seguida, otimizar as formulações em relação à porcentagem dos componentes e tensoativos utilizados, com o emprego, também, de um tensoativo sustentável. As f... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Lavender essential oil has been widely used in the cosmetic and pharmaceutical industry, demonstrating various therapeutic properties such as analgesic, anti-inflammatory, healing, antimicrobial and antifungal; however, their lipophilicity makes incorporation into aqueous matrix formulations difficult. Thus, nanotechnology has been emerging as a strategy to improve the performance of cosmetics contained assets and seek their acceptance by the consumer. The objectives of this work were: to evaluate the cytotoxicity and healing potential, as well as the antioxidant activity of Lavandula angustifolia and Lavandula dentata essential oils, using in vitro methodologies, and to obtain and characterize nanoemulsions containing these oils. The identification and quantification of the chemicals present in the essential oils were also performed. Regarding efficacy, antioxidant activity was analyzed by the methodology of inhibition of DPPH• and ABTS•+ radicals, and the healing potential by evaluating the stimulation of collagen production in HDFa cells. The cytotoxicity of the oils was also analyzed using the MTT dye methodology, and the nanoemulsions were obtained by the low energy method at room temperature, first determining the HLB of each oil and then optimizing the formulations in relation to the percentage of the components and surfactants used, with the use of a sustainable surfactant. The chosen formulations were subjected to two stress conditions for a period of 30 days of stor... (Complete abstract click electronic access below)
Mestre
Sarker, Md Lukman Syed. "Cloning of lavandula essential oil biosynthetic genes." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/43964.
Full textUpson, Tim M. "Systematics of the genus Lavandula L. (Lamiaceae)." Thesis, University of Reading, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363655.
Full textGrand, Pauline Sallenave-Namont Claire. "Lavandula angustifolia Mill et son huile essentielle." [S.l.] : [s.n.], 2009. http://castore.univ-nantes.fr/castore/GetOAIRef?idDoc=54886.
Full textNatesan, Lavanya [Verfasser]. "Mining the Genomes of Gliding Bacteria with Emphasis on Herpetosiphon aurantiacus / Lavanya Natesan." Bonn : Universitäts- und Landesbibliothek Bonn, 2012. http://d-nb.info/1044862637/34.
Full textBoscardin, Roberto Nogueira. "O lavado broncoalveolar na paracoccidioidomicose pulmonar." reponame:Repositório Institucional da UFPR, 2013. http://hdl.handle.net/1884/32079.
Full textPrado, Saldarriaga Víctor Roberto. "La criminalización del lavado de dinero." Derecho & Sociedad, 2015. http://repositorio.pucp.edu.pe/index/handle/123456789/118144.
Full textCasco, Sergio Alejandro, Fata Franco Lucas La, Mauricio Daniel Nadal, and Rocío María Romero. "Lavado de activos y paraísos financieros." Bachelor's thesis, Universidad Nacional de Cuyo. Facultad de Ciencias Económicas, 2020. http://bdigital.uncu.edu.ar/15716.
Full textFil: Casco, Sergio Alejandro. Universidad Nacional de Cuyo. Facultad de Ciencias Económicas.
Fil: La Fata, Franco Lucas. Universidad Nacional de Cuyo. Facultad de Ciencias Económicas.
Fil: Nadal, Mauricio Daniel. Universidad Nacional de Cuyo. Facultad de Ciencias Económicas.
Fil: Romero, Rocío María . Universidad Nacional de Cuyo. Facultad de Ciencias Económicas.
Prazeres, Lara Isabel Ribeiro Correia da Cunha Velho. "Revisão do género Lavandula presente em Portugal Continental." Master's thesis, Faculdade de Ciências e Tecnologia, 2014. http://hdl.handle.net/10362/11974.
Full textDe entre as plantas aromáticas da Flora de Portugal inclui-se a família das Lamiáceas, onde se encontra o género Lavandula que inclui cinco espécies: L. luisieri, L. pedunculata, L.pedunculata subsp. lusitanica, L. viridis e L. multifida. A taxonomia deste género tem sofrido diversas alterações taxonómicas devido à sua variabilidade morfológica e capacidade de hibridização. Neste trabalho pretendeu-se ampliar o conhecimento sobre o género Lavandula através de uma análise conjunta dos estudos morfométrico, micro morfológico e molecular, contribuindo assim para a revisão deste grupo taxonómico. No estudo morfométrico foram analisados 50 caracteres, quantitativos e qualitativos, em 12 espécies existentes no herbário do INIAV e em 16 plantas das diferentes espécies referidas. Estas últimas foram também utilizadas para a análise da variabilidade genética através de marcadores moleculares ISSR. A análise dos resultados foi realizada através de métodos de taxonomia numérica utilizando o programa NTSYS. Com este trabalho foi possível detetar 3 táxones claramente distintos: Lavandula sampaioana (Rozeira) Rivas Mart. (Alto Tejo substratos duros), Lavandula pedunculata (Mill.) Cav. subsp. lusitanica (Chaytor) Franco Tejo e Sado substratos arenosos e Lavandula stoechas subsp. luisieri (Rozeira) Rozeira, Calcários e silicatos em sítios chuvosos.
Chirinos, Fernández Jennifer Melissa, and Cabrejos Iris Janet Rodríguez. "Revisión crítica : lavado manual versus lavado automático del instrumental quirúrgico para garantizar una limpieza y desinfección eficaz." Bachelor's thesis, Universidad Católica Santo Toribio de Mogrovejo, 2018. http://tesis.usat.edu.pe/handle/usat/1489.
Full textTrabajo académico
Ampuero, Pauletti Ximena Johana. "Modelo de prevención de lavado de dinero." Universidad Mayor de San Andrés. Programa Cybertesis BOLIVIA, 2009. http://www.cybertesis.umsa.bo:8080/umsa/2009/ampuero_px/html/index-frames.html.
Full textTapia, Pizco Nina Karina. "Sistema mecatrónico para el lavado de cubiertos." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2014. http://tesis.pucp.edu.pe/repositorio/handle/123456789/5603.
Full textTesis
Lamas, Puccio Luis. "Corrupción de Funcionarios y Lavado de dinero." Derecho & Sociedad, 2017. http://repositorio.pucp.edu.pe/index/handle/123456789/118411.
Full textAmez, Obregón Rosmery, Meza Frank Stuart Olaya, Guillén Cynthia Alejandra Rojas, and Gómez Silvia Vargas. "Shoes Shine, lavado y mantenimiento de zapatillas." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/626478.
Full textShoes Shine, is a project analyzed based on the unsatisfied need of a certain segment of clients; give your shoes an exclusive maintenance, which provides the guarantee of not mistreating it, seeking to extend the life time of your footwear, with the best care and in the shortest possible time. We currently find various services; washing clothes and sneakers, however these require high prices, long waiting times and also being traditional services are not adapted to the current needs of customers. Shoes Shine, will offer; various shoe cleaning services, quotes, various means of payment, book of claims, among others. It will be directed to; men and women of NSE A, B and C, from 25 to 40 years of age, from some districts of zones 6, 7 and 8 of Metropolitan Lima. Our innovative business model will provide a high quality service, carried out by expert personnel, who will carry out these washing operations inside a truck conditioned with ultimate generation equipment and eco-efficient. This mobile washing proposal will offer an original and different service to the competition, covering the need to wash shoes, pick them up and leave them where the customer wants; your home or work center, and all in the shortest time possible. The study of this business model shows that this proposal generates value; obtaining a VAN of S /. 37,774.63 and TIR of 61.92%.
Trabajo de investigación
Acosta, Lopez Katterine. "Sistemas de prevención del lavado de activos." Master's thesis, Pontificia Universidad Católica del Perú, 2021. http://hdl.handle.net/20.500.12404/19923.
Full textXavier, Haroudo Satiro. "Lavandula stoechas L. (Lamiaceae) : étude botanique, chimique et pharmacodynamique." Montpellier 1, 1988. http://www.theses.fr/1988MON13520.
Full textDronne, Sandrine. "Amélioration du lavandin par variation somaclonale et transformation génétique." Saint-Etienne, 1999. http://www.theses.fr/1999STET4004.
Full textJorge, Rita Eduardo. "Avaliação de óleos essenciais e extratos de Lavandula SPP. no controlo de microrganismos." Master's thesis, ISA/UL, 2014. http://hdl.handle.net/10400.5/8300.
Full textThe Portuguese flora is very rich in aromatic and medicinal plants, among which are Lavandula stoechas subsp. luisieri and L. pedunculata. The present study was aimed to evaluate the potential antimicrobial activity of five plant extracts and essential oils (EO) obtained from these species, with respect to human and plant pathogens. The EO were extracted from dried material by hydrodistillation and the extracts by a solvent system of increasing polarity. To evaluate the activity of samples against human pathogens the microdilution method was used and determined the values of minimum inhibitory concentration (MIC) at different concentrations: 7.5, 15.5, 31, 62.5, 125, 250 and 500 μg/mL. Results were considered positives for MIC values < 100 μg/mL. Lavandula species showed different antimicrobial properties, attributed to differences in the chemical composition of the respective EO and extracts. For phytopathogenic bacteria a similar procedure was followed. Regarding the fungi, the activity of EO and extracts was evaluated by the disc diffusion method on solid medium inoculated with spore suspensions or mycelial discs at sample concentration of 1 mg/mL and 2 mg/mL, respectively. None of the plant pathogens was inhibited. This study tends to confirm the use of EO and plant extracts to control different types of microbial pathogens