Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-05-12T12:35:58Z No. of bitstreams: 1 1978 - Roberto Oscar Pereyra Rossielo.pdf: 1070327 bytes, checksum: 2a0b73b43c35132e3d9af4dfca0ed376 (MD5) / Made available in DSpace on 2017-05-12T12:35:58Z (GMT). No. of bitstreams: 1 1978 - Roberto Oscar Pereyra Rossielo.pdf: 1070327 bytes, checksum: 2a0b73b43c35132e3d9af4dfca0ed376 (MD5) Previous issue date: 1978-07-10 / A study was made of the effect of water stress on three corn (Zea mays L.) cultivars: Piranao, Centralmex and IPEACS III. Under the effect of a - 15 atm stress (using mannitol as osmoticum), Centralmex showed the highest percent germination while IPEACS III showed the lowest. The germination of Piran?o seeds fell in between. There also differences in root and coleoptile growths of the three varieties as compared to that of the controls (germinated in demineralized water). At a more advanced stage of grouth (6-8 leaves, plants in pots kept in a greenhouse), the soil-water stress affected the plants differently. IPEACS III continued to be severely affected but Piran?o was now the least affected, with Centralmex falling in between. The effects of water stress upon the plant metabolic patterns resulted in a increase in the leaf content of nitrate-N, free amino-N, ammonia-N, free proline and soluble sugars.181 There was on the other hand a reduction in nitrate reductase activity and protein content. Although the same general metabolic pattern was observed for the three varieties, significant differences could be detected among the varieties. These results indicated that the greenhouse environment was adequate for the study of plant responses to water stress, even enabling the distinction between varietal differences. The content of free amino-N and soluble sugars in the plant leaves showed a higher sensitivity to moderate water stress than the other indicators. A special attention was given to the study of the increase in free proline levels in the leaves. The ellucidation of the factors governing the relative accumulation of this metabolite in corn leaves requires more detailed studies. Only then could proline content be considered a safe indicator of water stress resistance for corn plants. The plants under water stress were also submitted to growth analysis. This test was very efficient for the study of dry weight and leaf expansion variation among varieties. The results of this study shows that three main factors are responsible for the plant resistance to water stress, namely: a. Tolerance to dehydration (differences in R.W.C.) b. resistance to loss in protein (differences in protein-N levels and free-N/protein-N ratios)182 c. increasc in root/shoot ratios. The present study shows the necessity of experiments with field grown plants, to check the sensitivity of the various factors studied and to compare the behavior of different corn varieties in the field with that in greenhouse. / Tr?s variedades de milho (Zea mays L.), Piran?o, Centralmex e IPEACS III, foram submetidas a stress h?drico em duas fases do crescimento vegetativo. As diferen?as na taxa e percentagem final de germina- ??o, alongamento da raiz e do cole?ptilo foram avaliadas nas tr?s variedades, quando submetidos a um stress osm?tico de -15 atmosferas, usando-se manitol como osmoticum. Centralmex mostrou a maior percentagem de germina??o final nestas candi- ??es e IPEACS III, a menor; Piran?o apresentou um comportamento intermedi?rio. Diferen?as entre as variedades nos respectivos percentuais de alongamento da raiz e cole?ptilo foram notadas ao serem comparadas com seus controles mantidos em ?gua deionizada. Quando as variedades foram comparadas em um est?gio mais avan?ado de crescimento (6-8 folhas), e o stress h?drico induzido por desseca??o progressiva do solo, em casa de vegeta??o, a variedade IPEACS III mostrou-se severamente afetada,Piran?o, relativamente, a menos afetada, apresentando Centralmex um comportamento intermedi?rio. Neste ?ltimo est?gio de crescimento, fez- se uma compara??o da sensibilidade de distintos indicadores metab?licos ? defici?ncia h?drica. Com rela??o ao metabolismo de N, foram avaliados os teores foliares de N-n?trico, N-amoniacal, N-amino livre, prolina e N-proteico. No que diz respeito ao metabolismo de carbohidratos, avaliou-se o teor foliar de carbohidratos sol?veis. Foram observados incrementos nos teores de N-amoniacal, N-n?- trico, N-amino livre, prolina e carbohidratos sol?veis. Concomitantemente, observou-se decr?scimos para o teor de N-proteico e a atividade de nitrato-reductase. Este padr?o geral de varia??o, em resposta a stress h?drico, se expressou em forma diferencial (estatisticamente significativa) entre variedades, indicando que, o ambiente proporcionado pela casa de vegeta??o foi apropriado para a separa??o dos efeitos decorrentes do stress h?drico daqueles devidos ?s caracter?sticas varietais. Os teores de N-amino livre e carbohidrato sol?vel mostraram uma maior sensibilidade a deficits h?dricos moderados. Em adi??o aos indicadores metab?licos, realizou-se a an?lise de crescimento, que mostrou ser um procedimento apropriado para descrever as varia??es em taxas de acumula??o de mat?ria seca e expans?o de ?rea foliar entre as variedades. Os dados sugeriram que, as diferen?as observadas em resist?ncia ao stress h?drico entre as variedades podem ser decorrentes de tr?s tipos de efeitos: toler?ncia ? desidrata ??o (diferen?as em C.H.R.), toler?ncia a perda de prote?nas (diferen?as nos teores de N-proteico e na rela??o N-sol?vel/ N-proteico) e incrementos na rela??o raiz/parte a?rea. A evolu??o do teor foliar de prolina foi particularmente observada nos tr?s cultivares, visando-se ligar o seu teor ? explica??o das diferen?as em sensibilidade (ou resist?ncia) ao stress h?drico. Os resultados atualmente obtidos, mostraram que, pelo menos em milho, ? necess?rio um estudo mais detido dos fatores que governam a acumula??o deste metab?lito, antes de aplicar-se indiscriminadamente este par?metro como indicador de resist?ncia ? seca. Finalmente, foi destacada a necessidade de experimenta??o direta no campo, visando a determina??o do grau de sensibilidade dos distintos indicadores e a quantifica??o das diferen?as com respeito ao comportamento das variedades em casa de vegeta??o.

Submitted by Setor de Tratamento da Informa??o - BC/PUCRS (tede2@pucrs.br) on 2016-11-29T15:54:11Z No. of bitstreams: 1 DIS_GEISA_FINGER_COMPLETO.pdf: 2399270 bytes, checksum: 9c1955548b0d1cebf40305d870924ca5 (MD5) / Made available in DSpace on 2016-11-29T15:54:11Z (GMT). No. of bitstreams: 1 DIS_GEISA_FINGER_COMPLETO.pdf: 2399270 bytes, checksum: 9c1955548b0d1cebf40305d870924ca5 (MD5) Previous issue date: 2016-08-23 / The behavioral and psychological symptoms of dementia (BPSD), has been a concern among mental health services due to the high injury rate in functionality and quality of life of this population. However, still remains open understanding of the psychological and behavioral changes that characterize each stage of cognitive decline. This study aimed to evaluate each SCPD present in the Neuropsychiatric Inventory (NPI) in elderly patients with mild cognitive decline, mild and moderate dementia, and relate to gender, age, educational level and degree of cognitive decline. Methods: Cross-sectional descriptive and analytical study with retrospective data collection of 123 elderly from Pontifical Catholic University of Rio Grande does Sul (PUC-RS). Data were collected from medical records of patients submit the following completed instruments: (i) Cognitive Examination Addenbrooke (ACE-R); (ii) Clinical Staging of Dementia (CDR); (iii) the Neuropsychiatric Inventory (NPI). The description of variables was being conduct using frequencies, means and standard deviations. The association between categorical variables (gender, education, age and CDR) and the presence of behavioral and psychological symptoms will be analyzed. P values ? 0.05 will be considered significant. In assessing the association of the BPSD with sex, apathy showed a significant association (p = 0.027) in 44.4% of men and eating disorders (p = 0.019). The association of the BPSD and age, delusions corresponded to 13.3% in the age group of 60 to 69 years, 9.4% between 70 and 79 years and 32.5% after 80 years of age (p = 0.024). Depression was present in 66.7% of individuals between 60 to 69 years, 52.8% between 70-79 years and 42.5% in octogenarians (p = 0.047). In the association of the BPSD with education, delusions were present in 23.7% of the population illiterate or with up to 3 years of schooling, 11.4% between 4 and 7 years of study, no cases above 80 years of age (p = 0.021). Anxiety showed 32.9% in illiterate individuals or up to 3 years of study, 54.3% in those aged 4 to 7 years of study and 58.3% when above 8 years of study (p = 0.020). The euphoria was not present in illiterate and showed values of 8.6% in those with 4-7 years of schooling and 8.3% over 8 years of education (p = 0.019). By analyzing the association of the BPSD in relation to cognitive decline, delusions presented significant data with 5.0% in mild cognitive decline, 18.2% in mild dementia and 35.7% in moderate dementia (p = 0.001). Hallucinations represented 7.5% of the cases of mild cognitive decline, 21.8% in cases of mild dementia and mild dementia in 28.6% (p = 0.024). Apathy was 15% in mild cognitive decline, 32.7% in mild dementia and 35.7% in moderate dementia (p = 0.046). The disinhibition showed 5.0% in mild cognitive decline, 12.7% in mild dementia and 21.4% in moderate dementia (p = 0.042).Neuropsychiatric symptoms are common in individuals with dementia and tend to increase the prevalence over time of disease progression. The results are consistent with the literature, where the low education is a contributing factor for psychotic symptoms when faced with high education, which is protective for the existence of cognitive decline and its associated symptoms. The increase in years of life contributes to the emergence of BPSD at older ages, as octogenarians, age at which the disease can be in the moderate stage. The evaluation of SCDP at level or evidence, it must be performed in all patients. / Os sintomas comportamentais e psicol?gicos das dem?ncias (SCPD), tem sido uma preocupa??o entre os servi?os de sa?de mental, devido ao alto ?ndice de preju?zo na funcionalidade e qualidade de vida desta popula??o. Contudo, ainda permanece em aberto a compreens?o das altera??es psicol?gicas e de comportamento que caracterizam cada est?gio do decl?nio cognitivo. O presente trabalho teve como objetivo avaliar cada SCPD presente no Invent?rio neuropsiqui?trico (NPI) em idosos com decl?nio cognitivo leve, dem?ncia leve e dem?ncia moderada, e relacionar com sexo, faixa et?ria, escolaridade e grau de decl?nio cognitivo. M?todo: Estudo transversal, descritivo e anal?tico, com an?lise de dados retrospectiva. Os dados foram coletados de 123 prontu?rios de idosos do Ambulat?rio de Envelhecimento Cerebral da Pontif?cia Universidade Cat?lica do Rio Grande do Sul, que apresentassem os seguintes instrumentos preenchidos: (i) Exame Cognitivo de Addenbrooke (ACE-R); (ii) Estadiamento Cl?nico da Dem?ncia (CDR) e o (iii) Invent?rio Neuropsiqui?trico (NPI). Na descri??o das vari?veis foram utilizados frequ?ncias, m?dias e desvios padr?es. Foram analisadas as associa??es entre as vari?veis categ?ricas (sexo, escolaridade, faixa et?ria e CDR) e a presen?a dos sintomas comportamentais e psicol?gicos e considerados significativos valores para p ? 0,05. Na avalia??o da associa??o dos SCPD com sexo, a apatia apresentou associa??o significativa (p=0,027) em 44,4% dos homens bem como os dist?rbios alimentares (p=0,019). Quando avaliada a associa??o entre sintomas comportamentais e faixa et?ria, os del?rios corresponderam a 13,3% na faixa et?ria de 60 a 69 anos, 9,4% entre 70 e 79 anos e 32,5% ap?s 80 anos de idade (p=0,024). A depress?o estava presente em 66,7% dos indiv?duos entre os 60 a 69 anos, 52,8% entre 70 a 79 anos e 42,5% nos octogen?rios (p=0,047). Na associa??o entre sintomas comportamentais ou psicol?gicos com escolaridade, os del?rios estavam presentes em 23,7% na popula??o de analfabetos ou com at? 3 anos de escolaridade, em 11,4% entre 4 e 7 anos de estudo, sem nenhum caso acima dos 80 anos de idade (p=0,021). A ansiedade apresentou 32,9% nos indiv?duos analfabetos ou com at? 3 anos de estudo, 54,3% naqueles idosos com 4 a 7 anos de estudo e 58,3% quando acima de 8 anos de estudo (p=0,020). A euforia n?o se mostrou presente em analfabetos e apresentou valores de 8,6% nos indiv?duos com 4 a 7 anos de escolaridade e 8,3% acima dos 8 anos de escolaridade (p=0,019). Ao analisar os sintomas comportamentais em rela??o ao decl?nio cognitivo, os del?rios apresentaram dados significativos com 5,0% no decl?nio cognitivo leve, 18,2% na dem?ncia leve e 35,7% na dem?ncia moderada (p=0,001). As alucina??es representaram 7,5% dos casos de decl?nio cognitivo leve, 21,8% nos casos de dem?ncia leve e 28,6% na dem?ncia moderada (p=0,024). A apatia foi de 15% no decl?nio cognitivo leve, 32,7% na dem?ncia leve e 35,7% na dem?ncia moderada (p=0,046). A desinibi??o apresentou 5,0% no decl?nio cognitivo leve, 12,7% na dem?ncia leve e 21,4% na dem?ncia moderada (p=0,042). Os sintomas neuropsiqui?tricos foram frequentes em indiv?duos com dem?ncia e aumentaram a preval?ncia com o tempo de evolu??o da doen?a. O aumento dos anos de vida contribuiu para o surgimento de SCPD em idades mais avan?adas, como os octagen?rios, idade na qual a doen?a pode estar na fase moderada. A avalia??o dos SCPD apresenta n?vel de evid?ncia A, devendo ser realizada em todos os pacientes.

Submitted by Setor de Tratamento da Informa??o - BC/PUCRS (tede2@pucrs.br) on 2016-12-15T18:54:59Z No. of bitstreams: 1 TES_JOCARLI_ITAMIRA_DUARTE_ALENCASTRO_COMPLETO.pdf: 4124891 bytes, checksum: 626f250c45ed7ded36bb545f18def41e (MD5) / Made available in DSpace on 2016-12-15T18:54:59Z (GMT). No. of bitstreams: 1 TES_JOCARLI_ITAMIRA_DUARTE_ALENCASTRO_COMPLETO.pdf: 4124891 bytes, checksum: 626f250c45ed7ded36bb545f18def41e (MD5) Previous issue date: 2015-11-30 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The purpose of this work is the development of a methodology to determining the heat transfer coefficient by forced convection in the form of incidents jets heated in corrugated surfaces sheets of rigid polyurethane foam with the possibility of quantifying the transmitted heat. They were prepared six different geometry but with the same ridge width and height. At the same time we designed a structure for conducting experiments with a hot air circulation condition with temperature and speed controlled air and other cold air circulation condition with controlled temperature. Using hot air by forced convection of the surface profiles of selected plates were analyzed by sensors and thermography. It was considered steady and heat transfer in one-dimensional direction for the study, monitoring of trials was conducted by supervisory program with reading temperature measurements every second and final storage of 14,400 points, a total of four hours for each test. With the simulation and experimental data from automated thermographic images information and this methodology can determine roughly the convection coefficient and Nusselt correlations and for different Reynolds corrugated plates for five variations in hot air inlet speed. / A proposta do presente trabalho ? o desenvolvimento de uma metodologia para determina??o do coeficiente de transfer?ncia de calor por convec??o for?ada, sob a forma de jatos incidentes aquecidos em superf?cies corrugadas de chapas de espuma r?gida de poliuretano, com possibilidades de quantifica??o do calor transmitido. Foram confeccionadas seis geometrias diferentes, mas com mesma largura e altura de cristas. Paralelamente projetou-se uma estrutura para realiza??o de experimentos com uma condi??o de circula??o de ar quente, com temperatura e velocidade do ar controladas, e outra condi??o de circula??o de ar frio, com temperatura controlada. Utilizando-se o ar quente por convec??o for?ada os perfis escolhidos, da superf?cie das placas, foram analisados atrav?s de sensores e termografia. Considerou-se regime permanente e transmiss?o de calor no sentido unidimensional para o estudo. O monitoramento dos ensaios foi realizado atrav?s de programa supervis?rio com leitura de medi??es de temperatura a cada segundo e com armazenamento final de 14.400 pontos, totalizando quatro horas para cada teste. Com a simula??o experimental e com os dados obtidos por informa??es automatizadas e imagens termogr?ficas, a metodologia desenvolvida pode determinar de forma aproximada o coeficiente de convec??o e correla??es de Nusselt e Reynolds para diferentes corrugamentos em placas para cinco varia??es de velocidade de entrada de ar quente.

Submitted by Sara Ribeiro (sara.ribeiro@ucb.br) on 2017-06-12T19:49:50Z No. of bitstreams: 1 DanielBarbosaSantosTese2017.pdf: 2903750 bytes, checksum: 86d12129f89249ce626664f6b8a0faa9 (MD5) / Approved for entry into archive by Sara Ribeiro (sara.ribeiro@ucb.br) on 2017-06-12T19:50:04Z (GMT) No. of bitstreams: 1 DanielBarbosaSantosTese2017.pdf: 2903750 bytes, checksum: 86d12129f89249ce626664f6b8a0faa9 (MD5) / Made available in DSpace on 2017-06-12T19:50:04Z (GMT). No. of bitstreams: 1 DanielBarbosaSantosTese2017.pdf: 2903750 bytes, checksum: 86d12129f89249ce626664f6b8a0faa9 (MD5) Previous issue date: 2017-03-17 / This doctoral thesis, entitled "Emergencies of a transdisciplinary methodology for distance education under the onto-epistemological perspective of complexity", arises from my concerns about our current educational practice, based on secular models that, even apparently decadent, are still constitute as dominant, establishing an education based on methods and techniques that no longer seduce, not convince and no longer satisfy. When analyzing the practice of Distance Education, while reflecting on the need to redefine the current educational paradigm, I will seek, in Complex Thought and in the transdisciplinary methodology, some macroconcepts that will base this research epistemologically. The investigations regarding the pedagogical actions directed to Distance Education bring to the fore a specific and innovative educational modality that, in a reflexive way, could allow us to reflect on the education itself in its broadest sense. Agglutinating all the reflections proposed in the course of the arguments, the following problem arises to be investigated in this research: from the perspective of the emerging paradigm of complexity, the predominant teaching-learning processes in virtual environments consider the complex ontoepistemological dimensions that lead to a transdisciplinary methodology? From this problematic, the proposed macro-objective for this thesis is to evaluate, in Virtual Learning Environments, the aspects that suggest the overcoming of a cartesian educational paradigm, characterized by actions mainly conservative, linear and reductionist, in favor of a to make an emerging pedagogical one that considers the ontological perspective of the complexity, that favors the adoption of collaborative, innovative methodologies and that contemplates aspects of the transdisciplinarity in the processes of transformation of the apprentice subject. / Esta tese de doutorado, intitulada ???Emerg??ncias de uma metodologia transdisciplinar para educa????o a dist??ncia sob a perspectiva onto-epistemol??gica da complexidade???, surgiu das minhas inquieta????es a respeito da nossa atual pr??tica educacional, pautada em modelos seculares que, mesmo aparentemente decadentes, ainda se constituem como dominantes, estabelecendo uma educa????o alicer??ada em m??todos e t??cnicas que j?? n??o seduzem, n??o convencem e n??o satisfazem mais. Ao lan??ar um olhar investigativo a respeito da pr??tica da Educa????o a Dist??ncia, ao mesmo tempo em que reflito sobre a necessidade de ressignifica????o do paradigma educacional vigente, busquei, no Pensamento Complexo e na metodologia transdisciplinar, alguns macroconceitos que fundamentaram epistemologicamente esta pesquisa. As investiga????es a respeito das a????es pedag??gicas voltadas para EAD trouxeram ?? tona um modalidade educacional espec??fica e inovadora que, de maneira reflexiva, pode nos possibilitar reflex??es a respeito da pr??pria educa????o em si, em seu sentido mais abrangente. Aglutinando todas as reflex??es propostas no decorrer das argumenta????es, surge o seguinte problema a ser investigado nesta pesquisa: sob a perspectiva do paradigma emergente da complexidade, os processos de ensino-aprendizagem ocorrentes nos ambientes virtuais consideram as dimens??es onto-epistemol??gicas complexas que conduzem a uma metodologia transdisciplinar? A partir desta problem??tica, o macro-objetivo proposto para esta tese ?? o de avaliar, em Ambientes Virtuais de Aprendizagem, os aspectos que sugerem a supera????o de um paradigma educacional cartesiano, caracterizado por a????es majoritariamente conservadoras, lineares e reducionistas, em prol de um fazer pedag??gico emergente, que considere a perspectiva ontol??gica da complexidade, que favore??a a ado????o de metodologias colaborativas, inovadoras e que contemple aspectos da transdisciplinaridade nos processos de transforma????o do sujeito aprendiz.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-09-12T17:41:07Z No. of bitstreams: 1 2016 - Alan Franco Barbosa.pdf: 6969234 bytes, checksum: 6f0ea0da3698193a91ae661b3c8aee8e (MD5) / Made available in DSpace on 2017-09-12T17:41:07Z (GMT). No. of bitstreams: 1 2016 - Alan Franco Barbosa.pdf: 6969234 bytes, checksum: 6f0ea0da3698193a91ae661b3c8aee8e (MD5) Previous issue date: 2016-12-15 / CAPES / CNPq / FAPERJ / The chemical and biological properties of Jambu, as well as the evaluation of the stability of spilanthol and the procedures of isolation this amide by solvents extraction are described. Were determined the amino acid profile, fatty acids, minerals, and free polyphenols, and total antioxidant activity (DPPH and ABTS) by the processes of drying with cold air and lyophilization. Adsorption isotherms were constructed using the set of experimental data of eight mathematical models. Lyophilized capitula, leaves and stems of Jambu were extracted with methanol at 100 ?C, and 10 MPa, and analyzed by LC-MS and NMR spectroscopy. The effect of methanol extract, and of fractions obtained by partitions with hexane and dichloromethane of methanol extracts, of the Jambu on the tyrosinase enzyme such as the antimicrobial activity front against of Micrococcus luteus and Lactobacillus casei were evaluated. The activation index of NKCC2 phosphorylation was evaluated by Western blotting. The rate of aquaporin 2 apical expression was analysed by confocal laser microscopy. Jambu dryed by cold air showed higher content of nutrient, except for the mineral content, and antioxidant capacity compared to lyophilized Jambu. At all evaluated temperatures, the model of Peleg presented the best adsorption isotherms of Jambu dryed by cold air. Spilanthol concentrations in capitula, leaves and stems were 16.5, 0.344 and 0.241 mg/g dry weight. The methanol extract from Jambu and the hexane fraction (84.28 % of spilanthol) were able to activate oxidant activity of the tyrosinase enzyme. On the other hand, the dichloromethane fraction (about 100 % spilanthol) showed strong inhibitory effect of tyrosinase enzyme in the first 10 min. There was no antimicrobial activity of methanol extract and hexane fraction about L. casei. But the hexane fraction created inhibition zone on M. luteus. Induced inhibition of cAMP by spilanthol modulates negatively the urine-concentrating mechanisms. It is concluded that Jambu subjected to the drying process with cold air offers better chemical quality and antioxidant capacity. The major component, espilantol, present mainly in inflorescences, does not change with extreme storage conditions. The methanolic extract of Jambu strongly activates the enzyme tyrosinase, whereas the dichloromethane fraction inhibits the tyrosinase. The hexanic fraction inhibits Micrococcus luteus growth and espilantol inhibits the production of cAMP, contributing to its application in drugs with diuretic function. / Esta tese teve por objetivo avaliar as propriedades qu?micas e biol?gicas do Jambu, bem como avaliar a estabilidade do espilantol e isolar esta amida por extra??o com solventes. Foram determinados o perfil de amino?cidos, ?cidos graxos, minerais, polifen?is totais e livres e a capacidade antioxidante (DPPH e ABTS) do Jambu pelos processos secagem com ar frio e liofiliza??o. As isotermas de adsor??o foram constru?das usando o conjunto de dados experimentais de 8 modelos matem?ticos. Cap?tulos, folhas e hastes liofilizados de Jambu foram extra?dos com metanol a 100 ?C e press?o de 10 MPa e analisados por CL-EM e RMN. Avaliaram-se os efeitos do extrato metan?lico e de fra??es obtidas com hexano e diclorometano do Jambu sobre a enzima tirosinase e atividade antimicrobiana frente ao Micrococcus luteus e o Lactobacillus casei. A fosforila??o de NKCC2 foi avaliada como ?ndice da sua ativa??o atrav?s de Western blotting. A taxa de express?o apical aquaporina 2 foi analisada por microscopia confocal a laser. O Jambu seco com ar frio apresentou maior teor dos nutrientes avaliados, com exce??o do teor de minerais, e maior capacidade antioxidante em rela??o ao Jambu liofilizado. O modelo de Peleg, em todas as temperaturas avaliadas, apresentou melhores isotermas de adsor??o de umidade do Jambu seco com ar frio. As concentra??es de espilantol nos cap?tulos, folhas e hastes foram de 16,5, 0,344 e 0,241 mg/g do peso seco. O extrato metan?lico de Jambu, bem como a fra??o hex?nica (84,28 % de espilantol) foram capazes de ativar a enzima tirosinase, por outro lado, a fra??o obtida com diclorometano (cerca de 100 % espilantol) mostrou forte efeito de inibi??o da enzima tirosinase nos primeiros 10 min. N?o foi observada a??o antimicrobiana do extrato metan?lico e fra??o hex?nica sobre L. casei, por?m, a fra??o hex?nica criou halo de inibi??o sobre M. luteus. O espilantol inibiu a produ??o de cAMP, modulando negativamente os mecanismos de concentra??o de urina. Conclui-se que o Jambu submetido ao processo de secagem com ar frio ofereceu melhor qualidade qu?mica e capacidade antioxidante. O componente majorit?rio, espilantol, presente sobretudo nas infloresc?ncias, n?o se altera com condi??es extremas de armazenamento. O extrato metan?lico de Jambu ativa fortemente a enzima tirosinase, enquanto que a fra??o diclorometano inibe a tirosinase. J? a fra??o hex?nica inibe o crescimento Micrococcus luteus e o espilantol inibe a produ??o de cAMP, contribuindo para sua aplica??o em f?rmacos com fun??o diur?tica.

FAPERJ / The importance of studying soils in order to preserve its functions includes conservation efforts whose goal is to ensure preservation of natural resources for future generations. This study works with the scientific hypothesis that changes in vegetation cover in the watershed of Palmares-Ribeir?o do Saco, Rio de Janeiro State, in the period of 2009-2015, favored the erosion reduction in this area. To verify this trend an estimate of soil losses was made with use of RUSLE (Revised Universal Soil Loss Equation) which allows generating information to build up management plans to secure agricultural production, and to preserve natural resources of the region. Thus, the objective was to develop a methodology for assessment of vegetation affected by seasonality and able to reduce erosion, based on the NDVI (Normalized Difference Vegetation Index) in order to reduce part of values overestimation associated to errors in the RUSLE model. As secondary objective, to compare estimates of erosion and natural erosion potential (NEP) in the period of 2009-2015 with those obtained in the period of 1986-2009, in order to verify environmental impacts in the watershed. The area studied was the watershed of Palmares-Ribeir?o do Saco, located between the municipalities of Paty do Alferes and Miguel Pereira in the state of Rio de Janeiro. Even without the adoption of conservation practices by some of the region farmers, the general aspect of data provided by RUSLE and the NEP in recent years has shown that soil losses are tending to decrease, mainly due to the low recorded rainfall indexes, implying at low erosivity values. / A import?ncia do estudo dos solos a fim de preservar suas fun??es compreende os esfor?os conservacionistas que tem por meta garantir a persist?ncia dos recursos naturais para as gera??es futuras. O presente estudo trabalha com a hip?tese cient?fica de que a evolu??o da cobertura vegetal na bacia hidrogr?fica de Palmares-Ribeir?o do Saco, no estado do Rio de Janeiro, ocorrida no per?odo 2009-2015, favoreceu a redu??o do processo erosivo na bacia. Para averiguar tal tend?ncia foi feita a estimativa da perda de solo com uso da RUSLE (Revised Universal Soil Loss Equation) que possibilita gerar informa??es para montar planos de manejo que visem garantir a produ??o agr?cola preservando os recursos naturais da regi?o. Sendo assim, o objetivo principal foi desenvolver uma metodologia para avalia??o da vegeta??o afetada pela sazonalidade capaz de reduzir processos erosivos, com base no NDVI (Normalized Difference Vegetation Index) a fim de reduzir parte das superestimativas associadas ao erro no modelo da RUSLE. E como objetivo secund?rio comparar as estimativas do processo erosivo e o potencial natural de eros?o (PNE) no per?odo 2009-2015 com aquelas obtidas no per?odo 1986-2009, com intuito de verificar os impactos ambientais ocorridos na bacia hidrogr?fica. A ?rea utilizada como objeto de estudo foi ? bacia hidrogr?fica de Palmares-Ribeir?o do Saco, situada entre os munic?pios de Paty do Alferes e Miguel Pereira no estado do Rio de Janeiro. Mesmo sem haver a ado??o de pr?ticas conservacionistas por partes dos produtores na regi?o, o aspecto geral dos dados fornecidos pela RUSLE e o PNE dos ?ltimos anos revelou que as perdas de solo est?o tendendo ? redu??o, sobretudo por conta dos baixos ?ndices pluviom?tricos registrados, implicando em valores baixos de erosividade.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2018-03-23T19:09:07Z No. of bitstreams: 1 2017 - Daniele Cabral Michel.pdf: 1915531 bytes, checksum: af036434bb0fd939d8e85a7ff4a1d43f (MD5) / Made available in DSpace on 2018-03-23T19:09:07Z (GMT). No. of bitstreams: 1 2017 - Daniele Cabral Michel.pdf: 1915531 bytes, checksum: af036434bb0fd939d8e85a7ff4a1d43f (MD5) Previous issue date: 2017-02-14 / CAPES / FAPERJ / Centrolobium paraense Tul. popularly known as "pau-rainha", is a naturally occurring legume species from the northern state of Roraima (Brazil) to Panama. It has economic, social and environmental importance for local populations, being a nitrogen fixing species in association with bacteria of the rhizobia group. Thirteen Gram-negative, aerobic, motile with polar flagella, rods shaped bacteria previously isolated from root nodules of C. paraense grown in soils from the Roraima State were submitted to a polyphasic approach characterization. The study involved the carbon source utilization, enzymatic reaction, antibody, pH and NaCl tolerance, 16S rRNA, nodC, nifH and multi locus sequence phylogenetic analysis (MLSA with dnaK, glnII, recA, gyrB and rpoB), G+C content and Average Nucleotide Identity (ANI). Growth of strains was observed at temperature range 20- 36?C (optimal 28?C), pH ranges 5-11 (optimal 6.0-7.0) and 0.1-0.5%NaCl (optimal 0.1- 0.3%). Analysis of 16S rRNA gene placed the strains into two groups within Bradyrhizobium. Closest neighbouring species (98.8%) for group I was B. neotropicale while for group II were twelve species with more than 99% of similarity. MLSA confirmed B. neotropicale BR 10247T as the closest type strain for the group I and B. elkanii USDA 76T and B. pachyrhizi PAC 48T for group II. ANI differentiated group I from the B. neotropicale BR 10247T (79.6%), and group II from B. elkanii USDA 76T and B. pachyrhizi PAC 48T (88.1% and 87.9%, respectively). Fatty acid profiles (majority C16:0 and Summed feature 8 (18:1?6c/18:1?7c) for both groups), DNA G+C content and carbon compound utilization supported the placement of the novel strains in the genus Bradyrhizobium. Gene nodC and nifH of the new strains have in general low similarity with other Bradyrhizobium species. Both groups nodulated plants from the tribes Crotalarieae, Dalbergiae, Genisteae and Phaseoleae. Based on the result obtained, two novel species which the names Bradyrhizobium centrolobii and Bradyrhizobium macuxiense are proposed. / Centrolobium paraense Tul. popularmente conhecido como ?pau-rainha?, ? uma esp?cie de leguminosa que ocorre naturalmente no norte do estado de Roraima (Brasil) ao Panam?. Tem import?ncia econ?mica, social e ambiental para popula??es locais, sendo uma esp?cie fixadora de nitrog?nio (N) em associa??o com bact?rias do grupo dos riz?bios. Treze bact?rias gram-negativas, aer?bicas, com mobilidade atrav?s de flagelos polares e em forma de bastonetes previamente isoladas de n?dulos de ra?zes de Centrolobium paraense cultivadas em solos do estado de Roraima foram submetidas a caracteriza??o com abordagem polif?sica. O estudo envolveu a utiliza??o de fontes de carbono, rea??es enzim?ticas, composi??o de ?cidos graxos das c?lulas, antibi?ticos, pH e toler?ncia a NaCl,16S rRNA, an?lise filogen?tica dos genes nodC, nifH e de sequ?ncias multilocus (MLSA com dnaK, glnII, recA, gyrB e rpoB), conte?do de G+C e identidade m?dia de nucleot?deos (ANI). O crescimento das estirpes foi observado num intervalo de temperatura 20-36?C (?tima 28?C), intervalo de pH de 5-11 (?timo 6,0-7,0) e 0,1-0,5% NaCl (?timo 0,1-0,3%). A an?lise do gene 16S rRNA posicionou as estirpes em dois grupos dentro de Bradyrhizobium. A esp?cie mais pr?xima (98,8%) para o grupo I foi B. neotropicale enquanto para o grupo II foram outras doze esp?cies com mais de 99% de similaridade. MLSA confirmou B. neotropicale BR 10247T como a estirpe tipo mais pr?xima do grupo I e B. elkanii USDA 76T e B. pachyrhizi PAC 48T do grupo II. O ANI diferenciou o grupo I da B. neotropicale BR 10247T (79,6%) e o grupo II da B. elkanii USDA 76T e B. pachyrhizi PAC 48T (88,1 e 87,9 respectivamente. O perfil de ?cidos graxos (predomin?ncia de C16:0 e caracterist?ca somada 8 (18:1?6c/18:1?7c) para ambos os grupos, ANI, o conte?do de G+C e a utiliza??o de compostos de carbono deram suporte ao posicionamento das novas estirpes no g?nero Bradyrhizobium. Os genes nodC e nifH t?m em geral baixa similaridade com outras esp?cies de Bradyrhizobium. Ambos os grupos nodularam plantas de diferentes tribos.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2018-10-23T18:03:32Z No. of bitstreams: 1 2013 - Sandra Burin Sbardelotto.pdf: 3694700 bytes, checksum: 9cf1e5f789b51bbb8d179b341bad52ee (MD5) / Made available in DSpace on 2018-10-23T18:03:34Z (GMT). No. of bitstreams: 1 2013 - Sandra Burin Sbardelotto.pdf: 3694700 bytes, checksum: 9cf1e5f789b51bbb8d179b341bad52ee (MD5) Previous issue date: 2013-04-03 / Based on the premise that bullying encompasses a veiled form of violence present in almost all the educational institutions across the globe, we sought in this research not only verify the presence of the phenomenon by the Federal Institute of Santa Catarina - Campus Sombrio, as, also, understand and analyze the phenomenon of school bullying, perform an intervention by an extension work through an awareness campaign with the students of the institution. The methodology of this study was divided into three stages: the first stage, we sought to know the reality of the phenomenon at the Federal Institute Catarinanse, Campus Sombrio. At this stage, it was used as a tool for data collection a semistructured questionnaire, applied in 90 students in the classes of 2nd and 3rd year of High School and Technical Course as well as a consultation with individual records of students - administered by the General Coordination Support Educating. In the second stage, held an intervention with an anti-bullying campaign, with development activities with students in order to discuss, understand, think about the consequences, the protagonists and the importance of fighting him at the Institute. In the third stage, was assessed with the project participants with a questionnaire open. The research showed not only the presence of bullying at the Federal Institute of Santa Catarina, as well as vertical upwardbullying and cyberbullying. These findings, per si, justify this work and the pursuit of dissertative awareness campaign developed in Federal Institute of Santa Catarina, Campus Sombrio. However, as shown by the results, its efficiency depends on the future continuation of the program for a longer period of time, and by implementing and developing new coping strategies and combating school bullying. Put another way, the program requires adjustments: high temporal amplitude and greater involvement of the school community so that its efficiency is assured and its benefits are enjoyed by all involved in the phenomenon of bullying. Thus, it may contribute to the behavioral and personal enrichment of the members of the school community, and the eradication of school bullying. / Partindo-se da premissa de que o bullying encerra uma forma de viol?ncia velada presente na quase totalidade das institui??es de ensino em todo o globo, buscou-se, nesta pesquisa, n?o apenas constatar a presen?a do fen?meno junto ao Instituto Federal Catarinense - Campus Sombrio, como, tamb?m, compreender e analisar o fen?meno do bullying escolar, realizar uma interven??o mediante um trabalho de extens?o atrav?s de uma campanha de conscientiza??o com os alunos da institui??o. A metodologia deste trabalho foi dividida em tr?s etapas: na primeira etapa, buscou-se conhecer a realidade do fen?meno no Instituto Federal Catarinense, Campus Sombrio. Nesta etapa, usou-se como ferramenta de coleta de dados um question?rio semiestruturado, aplicado em 90 alunos das turmas de 2? e 3? anos do Ensino M?dio e do Curso T?cnico, bem como uma consulta ?s fichas individuais dos alunos, ? administrada pela Coordena??o Geral de Apoio ao Educando. Na segunda etapa, realizou-se uma interven??o com uma campanha antibullying, com desenvolvimento de atividades junto aos alunos com o prop?sito de discutir, compreender, pensar nas consequ?ncias, nos protagonistas e na import?ncia de combat?-lo no Instituto. Na terceira etapa, foi feita a avalia??o do projeto junto aos participantes com aplica??o de um question?rio aberto. A pesquisa evidenciou n?o apenas a presen?a do bullying no Instituto Federal Catarinense, como tamb?m o bullying vertical ascendente e o cyberbullying. Estas constata??es, per si, justificam a realiza??o deste trabalho dissertativo e o prosseguimento da campanha de conscientiza??o desenvolvida no Instituto Federal Catarinense, Campus Sombrio. No entanto, conforme mostram os resultados obtidos, sua efici?ncia futura depende do prosseguimento do programa por um per?odo maior de tempo, bem como mediante a aplica??o e o desenvolvimento de novas estrat?gias de enfrentamento e combate ao bullying escolar. Dito de outra maneira, o programa requer ajustes: maior amplitude temporal e um envolvimento maior da comunidade escolar para que sua efici?ncia seja assegurada e seus benef?cios sejam desfrutados por todos os envolvidos no fen?meno do bullying. Dessa forma, o mesmo poder? contribuir para o aprimoramento pessoal e comportamental dos membros da comunidade escolar, e na erradica??o do bullying escolar.

Made available in DSpace on 2014-12-17T15:46:21Z (GMT). No. of bitstreams: 1 EdjaneMVL.pdf: 339432 bytes, checksum: ffec700923ba593843216b4b77b1bccd (MD5) Previous issue date: 2004-11-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / This study, done in a master program, evaluated the thematic regarding the domestic physical violence against children. The data was obtained through the SOS children program from Natal municipality. The used methodology involved either recorded date as well as an interview done with a professional who had been working on the SOS program for more than ten years. The study emphasizes violent situations where children were involved, in particular, beaten by their parents. Our goal was to understand the domestic violence phenomena against children, using as parameter the social context where the families were inserted / Este estudo ? o resultado da pesquisa de mestrado, cuja tem?tica aborda a quest?o da viol?ncia intrafamiliar contra a crian?a. Atrav?s do programa SOS Crian?a, localizado no munic?pio de Natal, foi realizada uma pesquisa documental e de campo, com ?nfase nas situa??es de viol?ncia f?sica contra crian?as, em especial, o espancamento praticado por seus pais. O referido trabalho teve como subs?dio, uma pesquisa bibliogr?fica e a pr?pria experi?ncia da mestranda, educadora social h? 10 anos no referido programa. A inten??o deste estudo ? compreender como se processa a reprodu??o do fen?meno da viol?ncia intrafamiliar contra a crian?a, tendo como par?metro o contexto social em que se inserem as fam?lias estudadas

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-12-04T20:35:34Z No. of bitstreams: 1 RogerioAlvesDosSantos_DISSERT.pdf: 1907177 bytes, checksum: ad3d06f219f55585118b64b0ea69d9d9 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-12-06T22:45:12Z (GMT) No. of bitstreams: 1 RogerioAlvesDosSantos_DISSERT.pdf: 1907177 bytes, checksum: ad3d06f219f55585118b64b0ea69d9d9 (MD5) / Made available in DSpace on 2017-12-06T22:45:12Z (GMT). No. of bitstreams: 1 RogerioAlvesDosSantos_DISSERT.pdf: 1907177 bytes, checksum: ad3d06f219f55585118b64b0ea69d9d9 (MD5) Previous issue date: 2017-06-23 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / No s?culo XXI, apesar do discurso da educa??o especial em perspectiva inclusiva, processos de estigmatiza??o e de segrega??o ainda constituem pr?ticas presentes nas institui??es escolares brasileiras, sobretudo, quando se trata de alunos(as) com Defici?ncia Intelectual (DI). Em uma abordagem inclusiva, tais alunos(as) inseridos(as) em escolas regulares demandam modifica??es e reordenamentos did?tico-pedag?gicos e atitudinais. Assim, a investiga??o proposta nesta disserta??o procurou compreender, a partir das hist?rias de vida e escolar de jovens com DI, como suas trajet?rias escolares reverberaram na autoimagem, considerando a rela??o entre a interface estigma, identidade e DI. O estudo teve como objetivo analisar como as experi?ncias escolares de jovens com DI interferem na forma??o da sua identidade. Participaram da investiga??o tr?s jovens com diagn?stico de DI e suas respectivas tias/m?es. A metodologia empregada seguiu a abordagem qualitativa, norteada pelo m?todo de hist?ria oral de vida. Na constru??o de dados, foi utilizada a entrevista recorrente, o que permitiu apreender os sentidos atribu?dos ? vida escolar pelos sujeitos da pesquisa. Organizamos as categorias da seguinte forma: a) trajet?rias escolares e de vida; b) concep??es de si e experi?ncias de socializa??o na escola regular; c) processos de escolariza??o na escola regular. A an?lise dos dados permitiu compreender os tipos de experi?ncias com o estigma que os estudantes com DI est?o vivenciando no contexto escolar, ampliando consideravelmente os conhecimentos acerca da maneira como o processo de inclus?o de pessoas com DI est? sendo realizado, seus avan?os e limita??es no que diz respeito ? garantia da socializa??o e escolariza??o na escola regular. Verificamos, com o estudo, que a escolariza??o de pessoas com DI inseridas em salas regulares, nos ?ltimos anos do Ensino Fundamental e no Ensino M?dio, ainda ? marcada pela precariza??o dos processos de inclus?o, pela n?o aceita??o e estabelecimento de contatos mistos n?o rec?procos, refor?ando o estigma da n?o aprendizagem e desenvolvimento dos(as) alunos(as) com DI, bem como a cren?a de que a escola regular n?o ? o lugar deles. Uma das li??es desta disserta??o ? a necessidade da cria??o de um ambiente escolar menos restritivo para os(as) alunos(as) com DI, possibilitando a constru??o das identidades sem limit?-las e condicion?-las a um suposto r?tulo, considerando a multiplicidade de atributos e potencialidades que devem ser efetivamente desenvolvidas no decurso da vida escolar, criando novos significados sobre o que ? defici?ncia intelectual no cotidiano escolar. / In the XXI century, despite the speech of especial education in an inclusion perspective, some processes of stigmatization and segregation are still present practices in brazilian school institutions, especially, when it comes to students with Intellectual Disability (ID). In an inclusive aproach, such students inserted in regular schools require modifications, some didactic-pedagogical and attitudinal rearrangements. Thus, the proposed research in this dissertation aims to understand from the life and school histories of young people with ID, how their school trajectories had reverberated in the self-image they establish of themselves, Considering the relationship between the stigma interface, identity and ID. The study aimed to analyze how the school experiences of young people with ID interfere in the formation of their identity. Three young women diagnosed with ID and their respective aunts / mothers had the participation in the study. The applied methodology follows a qualitative approach, guided by the method of oral history of life. In the data construction, the recurrent interview was used, which allowed the apprehension of meanings attributed to the school life by the subjects of the research. We organized the categories as follows: a) school and life trajectories; b) conceptions and experiences of socialization in the regular school; c) schooling processes in regular school. The data analysis allowed us to understand the types of experiences with the stigma which students with ID are experiencing in the school context, considerably broadening the knowledge about the way the process of including people with ID has been done, its advances and its limitations with regards to the guarantee of socialization and schooling in the regular school. We verified, with the study, that the schooling of ID people inserted in regular classes, in the last years elementary and high school, is still characterized by the precariousness of inclusion processes, through the non-acceptance and the establishment of a non-reciprocal mixed contacts, reinforcing the stigma of the non-learning and development of students with ID, as well as the belief that regular school is not their place. At last, one of the lessons (provided by this) dissertation is the need to create a less restrictive school environment for ID students, allowing the construction of identities without limiting and conditioning them to a supposed label, considering the multiplicity of attributes and potentialities that must be effectively developed in the course of a school life, creating new meanings about what is intellectual disability in a school routine.