Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2017-06-07T22:50:41Z No. of bitstreams: 2 kennedy_paiva_porfirio.pdf: 1795601 bytes, checksum: b5586d73e2887546c047ef31257c28b7 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2017-06-22T15:23:55Z (GMT) No. of bitstreams: 2 kennedy_paiva_porfirio.pdf: 1795601 bytes, checksum: b5586d73e2887546c047ef31257c28b7 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2017-06-22T15:23:55Z (GMT). No. of bitstreams: 2 kennedy_paiva_porfirio.pdf: 1795601 bytes, checksum: b5586d73e2887546c047ef31257c28b7 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2016 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Este trabalho teve como objetivo desenvolver procedimentos de germina??o, estaquia e micropropaga??o de Xylopia aromatica. Os experimentos foram conduzidos na Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), em diamantina ? MG, cujos trabalhos foram divididos em dois cap?tulos. No primeiro cap?tulo foram realizados oito experimentos. A germina??o foi avaliada em quatro experimentos, onde sementes de Xylopia aromatica, separadas em lotes distintos quanto ? densidade, foram submetidas ? quebra de dorm?ncia utilizando GA3 em diferentes concentra??es (0; 25; 50; 100; 250; 500; e 1000 mg L-1), nos tempos de imers?o 24 e 48 horas. N?o ocorreu germina??o durante os 210 dias de avalia??o. Foram realizados quatro experimentos de estaquia, onde segmentos caulinares (com e sem folhas) e radiculares com classes de di?metros distintas, foram imersos por 30 segundos em solu??o de AIB (0; 2000; 4000; 6000; 8000 e 10.000 mg L-1) a fim de induzir o enraizamento advent?cio. Foi avaliado o percentual de enraizamento durante 140 dias. N?o houve enraizamento em nenhum dos experimentos, porem ocorreu brota??es nas estacas caulinares que foram imersas nas concentra??es de 2000, 4000 e 6000 mg L-1 de AIB. No segundo cap?tulo, foram realizados seis experimentos, que envolveram etapas de multiplica??o, alongamento e enraizamento in vitro. Explantes foram submetidos a diferentes meios de cultura (MS e WPM), e concentra??es de BAP (0,5 e 0,8 mg L-1), objetivando determinar o melhor meio de cultura e concentra??o de BAP para a multiplica??o da esp?cie. Avaliou-se tamb?m, o alongamento em explantes com o uso de combina??es de ANA e BAP e GA3, e enraizamento com o uso de AIB e ANA. O meio MS acrescido de 0,8 mg L-1 de BAP foi o que apresentou melhores resultados para a multiplica??o de Xylopia aromatica. Na fase de alongamento, o GA3 na concentra??o de 5,0 mg L-1 foi o regulador de crescimento que apresentou melhor resultado em altura e n?mero de folhas. No enraizamento, o AIB e o ANA n?o foram eficazes na indu??o de ra?zes, necessitando mais estudos relacionados ? etapa de enraizamento para a esp?cie. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016. / This study aimed to develop germination procedures, cutting and micropropagation Xylopia aromatica. The experiments were conducted in Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM) in Diamantina - MG, whose works were divided into two chapters. In the first chapter were carried out eight experiments. Germination was evaluated in four experiments where aromatica Xylopia seeds, separated into separate lots for density, were submitted to dormancy breaking using GA3 at different concentrations (0, 25, 50, 100, 250, 500, and 1000 mg L-1) under immersion for 24 and 48 hours. Not germinated during the 210 days of evaluation. Four cutting experiments were carried out where segments shoot (with and without leaves) and root with different diameter classes were immersed for 30 seconds in AIB solution (0; 2000; 4000; 6000; 8000 and 10,000 mg L-1) to induce adventitious roots. Rooting percentage was evaluated during 140 days. There was no rooting experiments, however sprouting occurred in the cuttings were dipped in concentrations of 2000, 4000 and 6000 mg L-1 AIB. In the second chapter, we were conducted six experiments, involving multiplication steps, stretching and in vitro rooting. Explants were subjected to different culture medium (MS and WPM) and BAP (0,5and 0,8mg L-1), in order to determine the best medium and concentration of BAP for the multiplication of the species. It also evaluated the elongation explants using combinations of ANA and BAP and GA3 and rooting using AIB and ANA. The MS medium plus 0.8 mg L-1 BAP showed the best results for the multiplication of Xylopia aromatica. In the stretching step, the concentration of GA3 at 5,0 mg L-1 was the growth regulator showed better results in height and leaf number. Rooting, AIB and ANA were not effective in inducing roots, requiring more studies related to the rooting stage for the species.

Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2017-10-04T13:13:21Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) aline_danielle_souza_prates.pdf: 764936 bytes, checksum: 07ecde7b89a9710be55845e608186865 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2017-10-09T14:25:55Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) aline_danielle_souza_prates.pdf: 764936 bytes, checksum: 07ecde7b89a9710be55845e608186865 (MD5) / Made available in DSpace on 2017-10-09T14:25:55Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) aline_danielle_souza_prates.pdf: 764936 bytes, checksum: 07ecde7b89a9710be55845e608186865 (MD5) Previous issue date: 2016 / Funda??o de Amparo ? Pesquisa do Estado de Minas Gerais (FAPEMIG) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Banco do Nordeste do Brasil (BNB) / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / A ingest?o de alimentos enriquecidos com ?cidos graxos poliinsaturados (PUFAs) da s?rie ?mega-3 vem sendo difundida nas ?ltimas d?cadas. A eleva??o dos n?veis dos ?cidos eicosapentan?ico (EPA) e docosaexan?ico (DHA) pode ser obtida por meio do enriquecimento da alimenta??o dos animais criados em cativeiro, manipulando-se a composi??o dos ?cidos graxos da dieta. O objetivo deste trabalho foi avaliar dietas contendo a inclus?o da microalga Schizochytrium sp. no desempenho produtivo e composi??o bromatol?gica de juvenis de piau. O experimento foi conduzido no Laborat?rio de Aquicultura e Ecologia Aqu?tica do Departamento de Zootecnia da Universidade Federal dos Vales do Jequitinhonha e Mucuri, em Diamantina ? MG. Foram utilizados 300 juvenis de piau com peso m?dio e comprimento total m?dio de 11,80 ? 1,08 g e 9,68 ? 0,31 cm, respectivamente . Os peixes passaram por sete dias de adapta??o ao ambiente e neste per?odo foram alimentados com a ra??o do tratamento controle. Utilizou-se um delineamento inteiramente casualizado, com cinco tratamentos (0, 10, 20, 30 e 40 g de Schizochytrium sp. kg-1) e quatro repeti??es, com sete juvenis estocados por aqu?rio, totalizando em 20 parcelas experimentais. Avaliou-se aos 60 dias de experimento os par?metros de desempenho produtivo: ganho de peso (g), biomassa final (g), consumo de ra??o (g), convers?o alimentar, taxa de crescimento espec?fico (TCE) (% dia-1), sobreviv?ncia (%) fator de condi??o (K), e par?metros bromatol?gicos da carca?a: mat?ria seca (MS), mat?ria mineral (MM), extrato et?reo (EE), prote?na bruta (PB), c?lcio (Ca) e f?sforo (P). Foi observado efeito linear crescente (p<0,05) para os par?metros de ganho de peso, biomassa final e sobreviv?ncia. Para convers?o alimentar observou-se efeito quadr?tico (p<0,05) com o melhor n?vel de 33,5 g kg-1 de inclus?o da microalga. Quanto ?s an?lises bromatol?gicas da carca?a , n?o foram observados (p>0,05) diferen?as para mat?ria seca, mat?ria mineral, extrato et?reo, exceto para a prote?na bruta, c?lcio e f?sforo que apresentaram efeito linear decrescente (p<0,05). Conclui-se que a inclus?o acima de 30 g de Schizochytrium sp. kg-1 na ra??o melhora o desempenho de piau. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016. / The food intake enriched with polyunsaturated fatty acids, omega-3 series, has been widespread in the recent decades. The increase of the EPA and DHA levels can be obtained by enriching the animals feed raised in captivity, by manipulating the fatty acids composition of dietary. This study aimed to evaluate diets with the inclusion of algae Schizochytrium sp. in the productive performance and chemical composition of piau juveniles. The experiment was conducted in the Aquaculture Laboratory of Aquatic Ecology Department of Animal Science of UFVJM in Diamantina - MG. Three hundred piau juvenile with mean weight and total length of 11.80 ? 1.08g and 9.68 ? 0.31 cm respectively, were subjected. Fishes passed for seven days of adaptation and were fed with the control feed treatment. A completely randomized design was used with five treatments (0, 10, 20, 30, and 40 g of Schizochytrium sp. Kg-1), and four replications, with seven juveniles were stocked through aquariums, totaling 20 experimental units. It was evaluated at 60th day of experiment the performance parameters such as weight gain (g), final biomass (g), feed intake (g), feed conversion, TCE (% day-1), survival (%) and condition factor (K), and bromatological parameters of the carcass: Dry matter (DM), mineral matter (MM), ethereal extract (EE), crude protein (CP), calcium (Ca) and phosphorus (P). Increasing linear effect (p <0.05) was observed for the parameters of weight gain, final biomass and survival. For food conversion, a quadratic effect was observed (p <0.05) with the best level of 33.5 g kg-1 inclusion of the microalgae. Regarding the bromatological analyzes of the carcass, differences were not observed (p> 0.05) for dry matter, mineral material, ethereal extract, except for crude protein, calcium and phosphorus, which presented a linear decreasing effect (p <0.05). It is concluded that the above inclusion of 30 g of Schizochytrium sp. Kg-1 in the diet improves the performance of piau.

The aim of the thesis on "Evaluation of the color of honey" was to determine why the instrument can not Lovibond Honey Colorpod 440110 to evaluate color of all types of honey and compare results of with spectrophotometric measurement methods. The work is divided into theoretical and practical part. The theoretical part is dedicated to honey, its composition and methods of evaluating color. The practical part describes the results obtained instrument Lovibond Honey Colorpod -- 440110, spectrophotometers Konica Minolta -- 3500d a FT -- NIR Antaris. In UV/VIS region not been demonstrated reason of errors of photometer. Maximum lightness had a very light honeys and the largest share of yellow had light honey. The highest values of absorbance attain dark honeys. In color space CIE L* a* b* had the largest share of red. Evaluation of the color of honey in the UV/VIS can not prove adulteration of honey always unambiguously, but there are signs by which honey can be described as suspicious. By analyzing the NIR spectrum is falsification of honey demonstrated using discriminant analysis.

Mathematical modeling of thin-layer solar drying and organoleptic properties of eland jerky was investigated in this study. Eland jerky was compared to the traditional beef jerky, inasmuch as both were treated with traditional jerky marinade (TM), TM with fresh pine apple juice (TMP), TM with honey (TMH), TM with Coca Cola (TMCCL) and compared to an untreated control (C). The influence of the marinades on the drying process was statistically significant. Based on the coefficient of determination, the root mean square errors and the chi-squares, the Two-term model was found to be the most suitable model for describing the solar drying kinetics of eland jerky. The mean effective moisture diffusivities of solar dried eland meat for the C and selected pre-treatments TM and TMH samples were 2.07 x 10-10, 1.45 x 10-10 and 1.43 x 10-10 m2.s-1, respectively. The activation energy values for solar dried eland jerky were 23.75, 26.22 and 26.97 kJ.mol-1 for C, TM and TMH, respectively. Organoleptic properties of dried eland meat was assessed by the 22 member degustation panel. The best scored pre-treatment was TMP, which has significant effect on texture, color and taste. Effect of the different pre-treatments on the overall combined color was calculated. Generally for both meat dried in both driers TMH marinade was evaluated as the one with the highest total difference contrariwise meat dipped in TMP pre-treatment has the lowest total difference.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2015-12-14T21:36:46Z No. of bitstreams: 1 AlbanisaFelipeDosSantos_DISSERT.pdf: 4703287 bytes, checksum: e882be5f3bf32915ca0f8f6710487c3d (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2015-12-16T17:33:34Z (GMT) No. of bitstreams: 1 AlbanisaFelipeDosSantos_DISSERT.pdf: 4703287 bytes, checksum: e882be5f3bf32915ca0f8f6710487c3d (MD5) / Made available in DSpace on 2015-12-16T17:33:34Z (GMT). No. of bitstreams: 1 AlbanisaFelipeDosSantos_DISSERT.pdf: 4703287 bytes, checksum: e882be5f3bf32915ca0f8f6710487c3d (MD5) Previous issue date: 2013-07-25 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico - CNPq / Neste trabalho, as propriedades de auto-similaridade dos fractais s?o exploradas para o desenvolvimento de superf?cies seletivas de frequ?ncia (Frequency Selectives Surfaces - FSS) com v?rias bandas de rejei??o. Em particular, s?o considerados fractais de Gosper, na defini??o dos formatos dos elementos das FSS. Por conta da dificuldade de impress?o de detalhes dos elementos das FSS, s?o considerados apenas elementos pr?-fractais, com at? tr?s itera??es fractais. As simula??es foram realizadas com o uso do programa comercial Ansoft Designer. Para fins de valida??o de resultados, foram constru?dos v?rios prot?tipos de FSS com elementos pr?-fractais. No processo de fabrica??o, os formatos dos elementos pr?-fractais foram desenhados com aux?lio do programa Corel Draw. Os prot?tipos constru?dos foram medidos atrav?s de um analisador de redes vetorial (modelo N3250A, da Agilent Technologies). A utiliza??o de elementos pr?-fractais nas estruturas de FSS consideradas, permitiu verificar que o aumento do n?vel fractal possibilita a redu??o do tamanho dos elementos, por?m reduz a largura de banda das mesmas. Neste sentido, ? tamb?m investigado o efeito produzido pelo cascateamento de estruturas de FSS na largura de banda. Foi observado que o uso de estruturas cascateadas, al?m de aumentar a largura de banda, permitiu, em alguns casos, a obten??o de at? respostas em frequ?ncia com tr?s bandas de opera??o entre 6 GHz e 15 GHz. / The fractal self-similarity property is studied to develop frequency selective surfaces (FSS) with several rejection bands. Particularly, Gosper fractal curves are used to define the shapes of the FSS elements. Due to the difficulty of making the FSS element details, the analysis is developed for elements with up to three fractal levels. The simulation was carried out using Ansoft Designer software. For results validation, several FSS prototypes with fractal elements were fabricated. In the fabrication process, fractals elements were designed using computer aided design (CAD) tools. The prototypes were measured using a network analyzer (N3250A model, Agilent Technologies). Matlab software was used to generate compare measured and simulated results. The use of fractal elements in the FSS structures showed that the use of high fractal levels can reduce the size of the elements, at the same time as decreases the bandwidth. We also investigated the effect produced by cascading FSS structures. The considered cascaded structures are composed of two FSSs separated by a dielectric layer, which distance is varied to determine the effect produced on the bandwidth of the coupled geometry. Particularly, two FSS structures were coupled through dielectric layers of air and fiberglass. For comparison of results, we designed, fabricated and measured several prototypes of FSS on isolated and coupled structures. Agreement was observed between simulated and measured results. It was also observed that the use of cascaded FSS structures increases the FSSs bandwidths and, in particular cases, the number of resonant frequencies, in the considered frequency range. In future works, we will investigate the effects of using different types of fractal elements, in isolated, multilayer and coupled FSS structures for applications on planar filters, high-gain microstrip antennas and microwave absorbers

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-01-26T19:01:21Z No. of bitstreams: 1 JussierDeOliveiraVitoriano_DISSERT.pdf: 29322891 bytes, checksum: 0c0254774bc22cc8cdd1189f3829e271 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-01-28T21:34:07Z (GMT) No. of bitstreams: 1 JussierDeOliveiraVitoriano_DISSERT.pdf: 29322891 bytes, checksum: 0c0254774bc22cc8cdd1189f3829e271 (MD5) / Made available in DSpace on 2016-01-28T21:34:07Z (GMT). No. of bitstreams: 1 JussierDeOliveiraVitoriano_DISSERT.pdf: 29322891 bytes, checksum: 0c0254774bc22cc8cdd1189f3829e271 (MD5) Previous issue date: 2015-01-09 / O presente trabalho teve como objetivo analisar a resposta biol?gica em superf?cies de tit?nio modificadas por plasma de Ar+N2+H2. Discos de tit?nio grau II receberam diferentes tratamentos de superf?cie com plasma de Ar+N2+H2, constituindo sete grupos experimentais incluindo amostras apenas polidas utilizadas como padr?o. Antes e ap?s o tratamento as amostras foram caracterizadas quanto ? topografia, estrutura cristalina e molhabilidade, usando microscopia de for?a at?mica, difra??o de raios-X, espectroscopia Raman e ensaio da gota s?ssil, respectivamente. Plasma sangu?neo rico em plaquetas (PRP) foi aplicado sobre as superf?cies modificadas em placas de cultivo. Imagens obtidas por microscopia eletr?nica das plaquetas aderidas foram analisadas a fim de verificar o comportamento das plaquetas nas diferentes condi??es experimentais. Verificou-se que a adi??o de H2 na atmosfera do plasma resultou em superf?cies mais rugosas, com picos arredondados. Essas superf?cies, ao contr?rio daquelas tratadas com atmosfera de alta concentra??o de N2, s?o menos propensas ? agrega??o plaquet?ria e, consequentemente, ? forma??o de trombos quando aplicadas em dispositivos biom?dicos. / This study aimed to analyze the biological response of titanium surfaces modified by plasma Ar + N2 + H2. Titanium disks grade II received different surface treatments Ar + N2 + H2 plasma, constituting seven groups including only polished samples used as standard. Before and after treatment the samples were evaluated in terms of topography, crystal structure and wettability, using atomic force microscopy, X-ray diffraction, Raman spectroscopy and testing of the sessile drop, respectively. Rich plasma (PRP) was applied to the surfaces modified in culture plates. Images obtained by scanning electron microscopy of the adhered platelets were analyzed to verify the behavior of platelets in the different experimental conditions. We verified that the adition of H2 on plasma atmosphere resulted in more rough surfaces, with round tops. These surfaces, in contrast to that surfaces treated with high concentration of N2, are less propense to platelet aggregation and, consequently, to the formation of thrombus when applied in biomedical devices.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-04-15T22:11:58Z No. of bitstreams: 1 IngridGuerraAzevedo_DISSERT.pdf: 2031705 bytes, checksum: eb74d521336e77556d793f40b4e8a342 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-04-20T00:46:41Z (GMT) No. of bitstreams: 1 IngridGuerraAzevedo_DISSERT.pdf: 2031705 bytes, checksum: eb74d521336e77556d793f40b4e8a342 (MD5) / Made available in DSpace on 2016-04-20T00:46:41Z (GMT). No. of bitstreams: 1 IngridGuerraAzevedo_DISSERT.pdf: 2031705 bytes, checksum: eb74d521336e77556d793f40b4e8a342 (MD5) Previous issue date: 2014-10-21 / O objetivo deste estudo foi estabelecer um padr ? o de normaliza??o da eletromiografia de superf?cie para os m?sculos respirat?rios esternocleidom astoideo (ECOM), escaleno (ESC) e reto abdominal ( RA ) . M?todos : Foram avaliados sujeitos saud?veis em rela??o a dados antropom?tricos, espirometria e s EMG durante a execu??o de cinco manobras distintas : sniff teste, press?o inspirat?ria m?xima (PIm?x), press?o expirat?ria m?xima (PEm?x) e c ontra? ? o Volunt?ria M ? xima Isom?trica (CVMI) dos m?sculos RA , ECOM e ESC. Para coloca??o dos eletrodos, a pele foi preparada com abras?o, seg uida de tricotomia, nas seguintes regi?es para aquisi??o dos sinais de eletromiografia: (1) ECOM: ter?o inferior da dist?ncia entre o processo mastoide e a articula??o esternoclavicular; (2) ESC: 5 cm para a direita a partir da articula??o esternoclavicula r e, neste ponto, 2 cm para cima e (3 ) RA : ao n?vel da cicatriz umbilical, 4 cent?metros ? direita . Na an?lise das vari?veis eletromiogr?ficas, a normalidade dos dados foi avaliada pelo teste Shapiro - Wilk . Compara??es entre as manobras inspirat?rias estudadas foram realizadas por meio do teste de Friedman e para manobras expirat?rias, teste de Mann Whitney . Ao dividir a amostra entre homens e mulheres, foi aplicado o teste de Mann - Whitney e Teste t de student de acordo com a normalidade dos dados . Re sultados : 35 sujeitos aceitaram participar do estudo, mas 5 foram exclu?dos ( IMC>25 kg/m? ) . A amostra foi composta por 30 sujeitos (1 5 mulheres), idade m?dia 25,7 ? 6,42 anos , IMC 22,2 ? 1,73 kg/m? e ?ndices espirom?tricos dentro dos limites considerados normais. A CVMI para os m?sculos ECOM, ESC e RA foi a que apresentou maior valor de RMS . Conclus?o: A manobra de CVMI para ECOM, ESC e RA foi a que apresentou maiores valores de RMS . Quando comparamos a RMS das manobras estudadas entre os grupos, n?o houve diferen?a significativa entre eles. / Aim : To evaluate and to standardize surface electromyography (sEMG) normalization procedures for respiratory muscles by comparing muscle activation during Maximal Voluntary Isometric Contraction (MVIC) and Maximal Respiratory Pressures (MIP, MEP and sniff test). Methods: Healthy subjects were evalua ted regarding demographics, spirometry and sEMG during the five maneuvers: sniff test, MIP , MEP and Maximal Voluntary Isometric C ontraction (MVIC) of RA, SCM and SC A . For electrode placement, skin was prepared with abrasion, followed by shaving in the foll owing regions for acquisition of el ectromyographic signals: (1) SC M: lower third of the distance between the mastoid process and t he sternoclavicular joint; (2) SC A : 5 cm to the right from the sternoclavicular joint and at this point, up to 2 cm; and (3 ) RA: the level of umbilicus, 4 cm to the right. In electromyographic variables analysis , the data normality was assessed by Shapiro - Wilk test. Comparisons among studied maneuvers were performed by Friedman Test and Dunn?s post - hoc for multiple comparisons a mong inspiratory maneuvers, and Mann Whitney test for expiratory maneuvers. Subgroups differences between genders were performed by Student's t test or Mann - Whitney test according to data normality. Results: 35 subjects participated in the study, b ut 5 we re excluded (BMI> 25 kg/ m?). Sample consisted of 30 subjects (1 5 women), mean age 27.3?7.43 years, BMI 22.2 ? 1.69 kg/m? and spirometric indices within normal limits. Specific MVIC for SCM, SCA and RA showed the highest RMS. When we grouped sample into gender we found no difference among RMS values for the studied SCM maneuvers, while for SCA, MVIC SCM / SCA was the one with the highest RMS and for RA, MVIC RA in men. Once considering women, MVIC SCM/SCA showed the highest RMS for SCM, SCA and MVIC RA showed t he highest value for RA. Conclusion: MVIC for SCM, SCA and RA muscles showed the highest RMS values. When comparing RMS between the studied groups, there was no significant difference between men and women.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-06-23T20:29:33Z No. of bitstreams: 1 RalyneEvelynCavalcanteSilva_DISSERT.pdf: 4233296 bytes, checksum: 708bbe6a88c6ca1bb4d421761eaa714d (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-06-27T21:29:47Z (GMT) No. of bitstreams: 1 RalyneEvelynCavalcanteSilva_DISSERT.pdf: 4233296 bytes, checksum: 708bbe6a88c6ca1bb4d421761eaa714d (MD5) / Made available in DSpace on 2016-06-27T21:29:47Z (GMT). No. of bitstreams: 1 RalyneEvelynCavalcanteSilva_DISSERT.pdf: 4233296 bytes, checksum: 708bbe6a88c6ca1bb4d421761eaa714d (MD5) Previous issue date: 2015-02-27 / O presente trabalho teve como principal objetivo avaliar as altera??es microclim?ticas do entorno do Parque E?lico Piloto de Macau/RN, presente no munic?pio de mesmo nome. Para alcan?ar tal objetivo, fez-se uso de t?cnicas de sensoriamento remoto utilizando os sat?lites Landsat - 5 TM e 7 ETM+, a partir do qual tornou-se poss?vel avaliar as mudan?as de temperatura na superf?cie presentes no entorno do parque em per?odos anteriores a sua implanta??o at? os dias atuais. Para avalia??o dos dados de temperatura que foram gerados atrav?s da aplica??o de um modelo, foi analisada sua correla??o com os dados coletados em campo e avaliado seu grau de correla??o, de modo a confirmar a validade dos dados adquiridos por via sat?lite. Al?m disso, foi realizada uma caracteriza??o do clima da regi?o com base nos dados da esta??o climatol?gica presente em Macau. Uma vez coletados esses dados, tornou-se poss?vel a avalia??o de altera??es de ordem clim?tica na regi?o de estudo. Ap?s a valida??o dos modelos de temperatura, foi realizada uma an?lise dos histogramas de temperaturas gerados. Visualmente n?o foi poss?vel identificar nenhuma altera??o significativa, entretanto, ao se analisar os dados de temperatura em um maior n?vel de detalhe, foi detectado um padr?o de comportamento dos dados para ambos os per?odos avaliados; apesar disso, n?o foi poss?vel perceber uma distin??o entre os per?odos de pr?-opera??o do parque e p?s-opera??o. A partir desse resultado, foram levantadas hip?teses para explicar o comportamento dos dados, sendo a primeira delas a presen?a de umidade no solo e a segunda, a composi??o qu?mica do solo. De modo a validar as hip?teses levantadas, foram aplicadas t?cnicas de PDI, envolvendo a combina??o RGB de diferentes bandas do Landsat 5 e a execu??o do procedimento de Raz?o de bandas, que puderam evidenciar os elementos presentes na superf?cie do solo. / This study aimed to evaluate the microclimate changes surrounding the wind farm Macau Pilot / RN, present in the municipality of the same name. To achieve this goal made use of remote sensing techniques using Landsat - 5 TM and 7 ETM +, from which made it possible evaluation of temperature changes on the surface, this around the park in periods prior to its implementation, to the today. For evaluation of the temperature data that has been generated by applying a template was performed its correlation with field data collection and evaluated the degree of correlation, in order to confirm the validity of the data acquired by satellite. Also held was a characterization of the climate of the region based on the data of this climatological station in Macau. Once collected this data made possible the evaluation of climate change policy in the study region. After validation of the temperature models, an analysis of the generated temperature histograms was performed visually could not identify any significant change. However when analyzing the temperature data at a higher level of detail, a data pattern of behavior was detected for both periods evaluated, yet could not see a distinction between the periods of pre-operation of the park, and post-operation . From this result was levantas hypotheses to explain the behavior of the data, the first of which is the presence of moisture in the soil, and the second to the soil composition. In order to validate the hypotheses were applied PDI techniques, involving a combination of different RGB bands of Landsat 5 and the implementation of Reason bands procedure that might show the elements present on the soil surface.

Made available in DSpace on 2014-12-17T14:58:23Z (GMT). No. of bitstreams: 1 RubensCA_DISSERT3.pdf: 2459942 bytes, checksum: f001281d5b69338e66d3fe7b5d544a25 (MD5) Previous issue date: 2013-08-09 / Os pol?meros biodegrad?veis, como o poli?cido l?ctico (PLA) apesar de consolidado nos campos farmac?uticos, m?dico e biom?dico como biomateriais ?teis para aplica??es variadas, por?m, depende da necessidade de funcionalizar a sua superf?cie estudando suas propriedades tais como hidrofilidade e hidrofobicidade favorecendo a intera??o do pol?mero com os materiais de aplica??o farmac?utica, m?dica e biom?dica. Este trabalho tem como objetivo produzir um material com caracter?sticas diferentes em cada um de seus lados, sendo um lado hidrof?lico e o outro hidrof?bico. O substrato t?xtil utilizado neste estudo foi um tecido de malha de composi??o 100% PLA que ? biodegrad?vel e biocompat?vel, o que possibilita sua aplica??o na ?rea biom?dica. Para modifica??o superficial foi utilizado o tratamento a plasma de baixa press?o. A t?cnica de modifica??o de superf?cie por plasma foi escolhida por ser uma tecnologia limpa, anticorrosiva e n?o t?xica ao contrario de muitos processos qu?micos convencionais utilizados na ind?stria t?xtil, al?m disso, n?o afeta as propriedades de massa do substrato. Neste estudo, um lado da superf?cie do substrato foi tratado com plasma oxig?nio, arg?nio e nitrog?nio, para o trabalho de melhoria da hidrofilidade da superf?cie e metano para a hidrofobicidade da amostra. A espectroscopia de emiss?o ?tica (OEE) foi utilizada para fazer o diagn?stico das esp?cies do plasma durante o tratamento. Ap?s o tratamento a plasma as amostras foram caracterizadas por medidas de ?ngulo de contato, microscopia eletr?nica de varredura (MEV), Espectroscopia de fotoel?trons de raios-X (XPS), Infravermelho com Transformada de Fourier (FTIR) de reflex?o total atenuada (ATR), medidas da ?rea de espalhamento do l?quido e arraste vertical. Onde foi caracterizado o aumento e diminui??o da molhabilidade das amostras tratadas por plasma bem como as vari?veis que contribu?ram para tal efeito. O tratamento das amostras de PLA com O2 + CH4 apresenta comportamento hidrof?lico no lado tratado com O2, apresentando aumento de rugosidade e grupos funcionais e no lado tratado com CH4, apresentando a forma??o de um filme polim?rico formado sobre a superf?cie da amostra. O tratamento com N2 + CH4 apresenta comportamento hidrof?bico, por?m com varia??es no fluxo do CH4 tem-se um controle da molhabilidade na superf?cie das amostras, podendo ir de hidrof?bico a hidrof?lico, neste tratamento as amostras apresentaram pequenas diferen?as de molhabilidade entre os lados tratados com plasma de N2 e com plasma de CH4

Made available in DSpace on 2014-12-17T15:14:57Z (GMT). No. of bitstreams: 1 MarcosVCH_TESE.pdf: 3967701 bytes, checksum: 441f771d20038217d3d711269b0e3d5f (MD5) Previous issue date: 2012-08-24 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / In this thesis, we study the application of spectral representations to the solution of problems in seismic exploration, the synthesis of fractal surfaces and the identification of correlations between one-dimensional signals. We apply a new approach, called Wavelet Coherency, to the study of stratigraphic correlation in well log signals, as an attempt to identify layers from the same geological formation, showing that the representation in wavelet space, with introduction of scale domain, can facilitate the process of comparing patterns in geophysical signals. We have introduced a new model for the generation of anisotropic fractional brownian surfaces based on curvelet transform, a new multiscale tool which can be seen as a generalization of the wavelet transform to include the direction component in multidimensional spaces. We have tested our model with a modified version of the Directional Average Method (DAM) to evaluate the anisotropy of fractional brownian surfaces. We also used the directional behavior of the curvelets to attack an important problem in seismic exploration: the atenuation of the ground roll, present in seismograms as a result of surface Rayleigh waves. The techniques employed are effective, leading to sparse representation of the signals, and, consequently, to good resolutions / Nesta tese, estudamos as aplica??es de representa??es espectrais para a solu??o de problemas em s?smica de reflex?es, a s?ntese de superf?cies fractais e a identifica??o de correla??es entre sinais unidimensionais. Aplicamos uma novo m?todo conhecido como Coer?ncia em Ondaletas para o estudo da correla??o estratigr?fica em sinais que representam perfis de po?os,como uma tentativa de identificar camadas pertencentes ? mesma forma??o geol?gica, demonstrando que a representa??o no espa?o das ondaletas, com a introdu??o do dom?nio de escala, pode facilitar o processo de comparar padr?es em sinais f?sicos. Introduzimos um novo modelo para a gera??o de superf?cies brownianas fracion?rias anisotr?picas baseada na transformada Curvelet, uma nova ferramenta multiescala que pode ser vista como uma generaliza??o da transformada em ondaletas para incluir a componente de dire??o em espa?os multidimensionais. Testamos nosso modelo com uma vers?o modificada do M?todo da M?dia Direcional (DAM) para a avalia??o de anisotropia de superfic?es brownianas fracion?rias. Tamb?m utilizamos o comportamento direcional das curvelets para atacar um problema importante na s?smica de explora??o: a atenua??o do ru?do de rolamento, presente no sismograma como resultado de ondas de Rayleigh superficiais. As t?cnicas empregadas s?o eficientes, levando a representa??es esparsas dos sinais e, consequentemente, a boas resolu??es