Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-05-10T23:27:35Z No. of bitstreams: 1 LeonardoEufrazioSoares_DISSERT.pdf: 478314 bytes, checksum: 7dc40739010f1419aabb36e3f9e5a522 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-05-18T21:00:15Z (GMT) No. of bitstreams: 1 LeonardoEufrazioSoares_DISSERT.pdf: 478314 bytes, checksum: 7dc40739010f1419aabb36e3f9e5a522 (MD5) / Made available in DSpace on 2016-05-18T21:00:15Z (GMT). No. of bitstreams: 1 LeonardoEufrazioSoares_DISSERT.pdf: 478314 bytes, checksum: 7dc40739010f1419aabb36e3f9e5a522 (MD5) Previous issue date: 2015-06-19 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A utiliza??o da aduba??o mineral e principalmente da aduba??o org?nica em sistemas de produ??o a posta ainda s?o pouco adotadas no Nordeste do Brasil. Objetivou-se nesse trabalho avaliar diferentes doses de biofertilizante e de aduba??o mineral em Panicum maximum cv. Massai na regi?o Litor?nea do Estado do Rio Grande do Norte. O experimento foi conduzido em campo com delineamento experimental em blocos ao acaso com seis tratamentos e quatro repeti??es, sendo os tratamentos: 0, 10, 20, 30 e 40 t/ha de biofertilizante. Al?m destes, utilizou-se um tratamento com aduba??o mineral (NP). As vari?veis analisadas nos experimentos foram altura do pasto (AL), intercepta??o de luz (IL), ?ndice de ?rea foliar (IAF), clorofila total (CLO), produ??o de mat?ria seca (PMS), taxa de ac?mulo de MS de forragem (TAF), ac?mulo de folha (AFo), ac?mulo de material morto (AMM) e ac?mulo de invasoras (PIn) de pasto de campi-massai. A coleta dos dados foram feitas a cada 60 dias durante seis meses, totalizando tr?s coletas. Os dados foram retirados da ?rea ?til de cada parcela (8,16 m?). Houve efeito linear positivo para todas vari?veis estudadas a medida que aumentou-se a dose de biofertilizante, exceto para as vari?veis AMM e AIn. A aduba??o mineral promoveu melhores resultados que as doses de biofertilizante para as vari?veis IL, IAF, PMS, TAF e AFo e se assemelhou a dose de 40 t/ha, dose m?xima, para vari?veis AL, CLO, AMM e AIn. Recomenda-se novos experimentos para avalia??o de doses maiores que 40 t/ha, a fim de identificar a m?xima produ??o do capim-massai adubado com biofertilizante. / The use of mineral fertilizers and especially of organic manure on pasture production systems are still poorly adopted in Brazilian northeastern. This work aimed to evaluate different doses of biofertilizers and mineral fertilizer in Panicum maximum cv. Massai in Quartzipsamment. The experiment was conducted at the Escola Agr?cola de Jundia?, Maca?ba, RN, led in experimental design fields in random blocks with six treatments and four replications, as treatments: 0, 10, 20, 30 and 40 t ha-1 of biofertilizer. In addition, we used a treatment with mineral fertilizer (NP). The variables analyzed in the experiments were: height of pasture (AL), light interception (IL), leaf area index (IAF), total chlorophyll (CLO), dry matter production (PMS), forage accumulation rate (TAF), leaf accumulation (AFo), dead material accumulation (AMM) and accumulation of weeds (PIn) in massai grass pastures. Data collection were made every 60 days for six months, in three collections. Data were taken from the useful area of each parcel (8.16 m?). There was a positive linear effect for all variables as they increased the dose of biofertilizers, except for the AMM and AIn variables. The mineral fertilizer promoted better results than the doses of biofertilizers for IL, IAF, PMS, TAF and AFo variables were similar to dose of 40 t ha-1 of biofertilizers for AL, CLO, AMM and AIn variables. It is recommended to do new experiments to evaluate higher doses than 40 t ha-1 to identify the maximum capacity of massai grass fertilized with biofertilizer.

Made available in DSpace on 2014-12-17T14:53:10Z (GMT). No. of bitstreams: 1 AnisiaKLG.pdf: 403985 bytes, checksum: 40bf1dc865ca113d8092cdcad601a595 (MD5) Previous issue date: 2006-05-19 / Demand for organic foods in the Brazil are growing year last, characterizing itself for if constituting in a new strategical segment of commercialization. In this context, the objective of this research was to investigate the factor that influence the interest of the consumers in the purchase decision of organic products, aiming to characterize the level of competitiveness of these products, assisting in the creation of environmental strategies for the development of the activity and contributing in the increment of the knowledge about the subject, that can assist it in the increase of the commercialization and the consumption of these foods. From data collected in the city of Manaus/AM, it was used a survey research, of exploratory and descriptive character. The sample was obtained using 421 questionnaires, in which was realized the descriptive analysis, analysis of groupings and association analysis among variables using the test qui-square. The results found in this study indicate that the majority the of consumers of supermarkets of the Manaus/AM never to purchase organic foods. Generally the consumers to have few or some knowledge about these foods, however, the level of the interest in to obtain information about the subject is high.The barriers mains in the purchase of organic products are the label fault in the product and the quality no certificate in the product. Among the profile characteristics, the variables income and level scholar are associate to interest level in the obtain information about the subject / A procura por alimentos org?nicos no Brasil vem crescendo nos ?ltimos anos, constituindo-se num novo segmento estrat?gico de comercializa??o. Nesse contexto, o objetivo desta pesquisa foi investigar os fatores que influenciam o interesse dos consumidores na decis?o de compra de produtos org?nicos, visando caracterizar o n?vel de competitividade desses produtos, auxiliando na cria??o de estrat?gias ambientais para o desenvolvimento da atividade e contribuindo para o incremento do conhecimento sobre o assunto que possa vir a auxiliar no aumento da comercializa??o e no consumo desses alimentos. A partir de dados coletados na cidade de Manaus/AM, utilizou-se uma metodologia de pesquisa do tipo survey , de car?ter explorat?rio e descritivo. A amostra foi obtida atrav?s de 421 question?rios, nos quais foram realizados An?lises Descritivas, An?lises de Agrupamento e de Depend?ncia entre vari?veis. Os resultados encontrados neste estudo indicam que a maioria dos consumidores de supermercados de manaus nunca compram produtos org?nicos. De modo geral os consumidores possuem pouco ou algum conhecimento sobre esses produtos, por?m o n?vel de interesse em obter informa??es sobre o assunto ? alto. As principais barreiras para compra de produtos org?nicos s?o a falta de rotulagem no produto e a qualidade n?o atestada do produto. Dentre as caracter?sticas de perfil, as vari?veis renda e escolaridade est?o associadas ao n?vel de interesse em obter informa??es sobre o assunto

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-02-17T18:43:03Z No. of bitstreams: 1 LindianeBieseki_TESE.pdf: 5268310 bytes, checksum: 259162ecc5d58cc1ee42eb6746ffdb22 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-02-17T20:42:31Z (GMT) No. of bitstreams: 1 LindianeBieseki_TESE.pdf: 5268310 bytes, checksum: 259162ecc5d58cc1ee42eb6746ffdb22 (MD5) / Made available in DSpace on 2017-02-17T20:42:31Z (GMT). No. of bitstreams: 1 LindianeBieseki_TESE.pdf: 5268310 bytes, checksum: 259162ecc5d58cc1ee42eb6746ffdb22 (MD5) Previous issue date: 2016-06-17 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / As ze?litas s?o uma classe de peneiras moleculares de estrutura cristalina e podem apresentar diferentes composi??es pela substitui??o de Si por outro elemento. No caso dos silicogermanatos, ?tomos de Si s?o substitu?dos por Ge na rede estrutural e s?o classificados como zeotipos. Neste estudo s?o apresentados resultados referentes a s?ntese de silicogermanatos zeol?ticos utilizando tr?s diferentes estrat?gias. Uma destas, ? a utiliza??o de compostos org?nicos que possam atuar como direcionadores de estrutura. No presente estudo foram utilizados 3 compostos diferentes com rela??o C/N+ de 6, 15 e 13, sendo dois compostos de uso in?dito em s?ntese de ze?litas. Os compostos foram avaliados em rela??o a resist?ncia a troca i?nica e em s?ntese de ze?litas utilizando diferentes composi??es, que incluem principalmente o uso de Sil?cio e Germ?nio e alguns testes com Boro. Algumas s?nteses foram realizadas em meio b?sico e outras em meio fluor?drico. Para caracteriza??o dos compostos org?nicos foram usadas as t?cnicas de Resson?ncia Magn?tica Nuclear (RMN), Espectroscopia na regi?o do Infravermelho (IV) e An?lise Qu?mica por CHN. Tamb?m foram realizados experimentos combinado o uso de um direcionador org?nico e um inorg?nico, neste caso LiOH. Os produtos de s?ntese de ze?litas foram caracterizados por Difra??o de raios-X (DRX), An?lise Termogravim?trica (TG), An?lise Qu?mica por CHN, an?lise qu?mica por Espectrometria de Emiss?o At?mica por Plasma Acoplado Indutivamente (ICP-AES), Espectroscopia na regi?o do Infravermelho (IV), Microscopia Eletr?nica de Varredura (MEV) e An?lise Qu?mica por Espectroscopia por Dispers?o de Energia (EDS). Com o uso do composto Iodeto de N,N,N-trimetil-2-adamantam?nio ? (3SDA(I)1), j? utilizado em s?ntese de ze?litas, foi sintetizado um silicogermanato com estrutura do tipo STT. / Zeolites are one class of molecular sieves with cristalline structure and may have different compositions for the replacement of Si by another element. In the case of silicogermanates, Si atoms were replaced by Ge in the structural network and are denominated zeotypes. In this study, results were obtained of the silicogermanate zeolites synthesis using different strategies. One of these is the use of organic compounds that can act as structure direct agent. In the present study, it was used three different compounds with C/N+ = 6, 15 and 13; being two of these novel compounds for use in zeolite synthesis. The compounds were evaluated for resistance to ion exchange and in zeolites synthesis using different compositions that primarily include the use of silicon and germanium and boron in some tests. Some syntheses were carried out in basic medium and others in the hydrofluoric medium. For characterization of organic compounds were used the Nuclear Magnetic Resonance techniques (NMR), Infrared spectroscopy (IR) and chemical analysis for CHN. Some procedures were also performed with the combined use of an organic and an inorganic driver, in this case LiOH. The zeolites synthesis products were characterized by Diffraction X-ray (XRD), Thermogravimetry analysis (TGA), chemical analysis by CHN, chemical analysis by Inductively plasma atomic emission spectroscopy (ICP-AES), Infrared Spectroscopy (IR) and Scanning electron microscope (SEM) and Energy Dispersive Spectroscopy (EDS). With the use of the N,N,N-Trimethyl-2-adamantammonium iodide - (3SDA(I)1), known in zeolite synthesis, it was possible to synthesize a silicogermanate with STT type structure.

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-05-30T13:53:16Z No. of bitstreams: 1 2015 - Thiago Cunha Silverio.pdf: 923183 bytes, checksum: 214eb765e4eeb06060ac4c9f90c393e3 (MD5) / Made available in DSpace on 2017-05-30T13:53:16Z (GMT). No. of bitstreams: 1 2015 - Thiago Cunha Silverio.pdf: 923183 bytes, checksum: 214eb765e4eeb06060ac4c9f90c393e3 (MD5) Previous issue date: 2015-12-04 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico - CNPq / The study was conducted, in the center of Integrated Rural Education State-CEIER, located in the municipality of White Eagle, Northwest of the State of Esp?rito Santo, the aim of this study was to evaluate the action of the whole milk added to the Bordeaux mixture Asperisporium caricae control, causative agent of smallpox and the behavior of this disease in different population densities the papaya tree. In setting up the experiment, the seedlings were separated by size: smaller, medium-sized and larger, so that the implementation of the orchard, there was within each block seedlings with similar vigor. The seedlings of papaya (Carica papaya L.) were prepared, using seeds of papayas hermaphrodites of the cultivar ' Golden Sunrise ', belonging to the soil. On planting and leading between each block, was grown legumes Sunn hemp (Crotalaria juncea) as green manure. The plants were bi-monthly composted manure tanned and potassium sulphate and alternating sprays with foliar fertilizer Agrobio (2%). The phytosanitary control followed the rules of organic farming. Spontaneous herbs were controlled by means of plant cover (Sunn hemp biomass) and periodic ro?adas. It took the experimental design of randomized blocks, being arranged in factorial arrangement of treatments. We evaluated the whole milk concentrations (0,0%, 5% and 10%) + 1% Bordeaux mixture (subplots), in six different breeding densities (1667, 2167, 3167, 2667, 3667 and 4167 plants. hectare-1). Based on the results it is concluded that: the addition of raw cow's milk to the Bordeaux mixture enables greater control of smallpox of papaya, both on the leaves, as in the fruits; the mixture prepared with 10% of raw cow's milk in Bordeaux mixture, the greater the inhibition signs of smallpox from papaya, both on the leaves, as in the fruits; analyzing by vegetative aspect of papaya, the greatest effect of the addition of raw cow's milk in Bordeaux mixture occurs in younger leaves; the extent to which increasing the dosage raw cow's milk, from zero to 10%, in Bordeaux, increases linearly, the ability to control the smallpox of the papaya, both on the leaves, as in the fruits; less degradated plantations allow lower occurrence of smallpox from papaya, both on the leaves, as in the fruits, if compared to those more Caterpillar; the density of plantation of papaya of 1667 plants.ha-4167 plants even 1.ha-1 the severity of smallpox of the papaya tree increases in a linear fashion; smallpox papaya progresses, exponentially, from bottom to top and/or older leaves to the newest; the part of the fruit, stuck in the plant, yet more exposed to external factors, is the most affected by smallpox of papaya, compared with the part facing the stem; analyzing for the papaya reproductive aspect, the greatest effect of the addition of raw cow's milk in Bordeaux is noticed on the face less exposed of the fruit; and, eat avocado with more leaves infected by smallpox will produce fruits also more affected by this disease / O estudo foi conduzido, no Centro Estadual Integrado de Educa??o Rural ? CEIER, situado no munic?pio de ?guia Branca, Regi?o Noroeste do Estado do Esp?rito Santo, o objetivo deste trabalho foi avaliar a a??o do leite integral adicionado ? calda bordalesa no controle do Asperisporium caricae, agente causal da var?ola e o comportamento desta doen?a em diferentes densidades de cultivo do mamoeiro. Na montagem do experimento, as mudas foram separadas por tamanho: menores, m?dias e maiores, de forma que na implanta??o do pomar, houvesse dentro de cada bloco mudas com padr?o de vigor parecido. As mudas de mamoeiro (Carica papaya L.) foram preparadas, utilizando-se sementes de mam?es hermafroditas da cultivar ?Sunrise Golden?, pertencente ao grupo Solo. Na entrelinha de plantio e entre cada bloco, foi cultivada a leguminosa crotal?ria (Crotalaria juncea) como adubo verde. As plantas foram bimensalmente adubadas com esterco curtido e sulfato de pot?ssio e pulveriza??es alternadas, com o biofertilizante l?quido Agrobio (2%). O controle fitossanit?rio seguiu as normas da agricultura org?nica. As ervas espont?neas foram controladas por meio de cobertura vegetal (biomassa da crotal?ria) e de ro?adas peri?dicas. Adotou-se o delineamento experimental de blocos ao acaso, sendo os tratamentos dispostos em parcelas subdivididas. Avaliaram-se as concentra??es de leite integral (0,0%, 5% e 10%) + calda bordalesa 1% (subparcelas), dentro de seis densidades de cultivo diferentes (1667, 2167, 2667, 3167, 3667 e 4167 plantas.hectare-1). Com base nos resultados conclui-se que: a adi??o de leite de vaca cru ? calda bordalesa possibilita maior capacidade de controle da var?ola do mamoeiro, tanto nas folhas, quanto nos frutos; a mistura preparada com 10% de leite de vaca cru na calda bordalesa, propiciou a maior inibi??o dos sinais da var?ola do mamoeiro, tanto nas folhas, quanto nos frutos; analisando pelo aspecto vegetativo do mamoeiro, o maior efeito da adi??o do leite de vaca cru na calda bordalesa ocorre nas folhas mais novas; a medida em que se aumenta a dosagem de leite de vaca cru, de zero at? 10%, na calda bordalesa, aumenta-se, linearmente, a capacidade de controle da var?ola do mamoeiro, tanto nas folhas, quanto nos frutos; plantios menos adensados possibilitam menor ocorr?ncia da var?ola do mamoeiro, tanto nas folhas, quanto nos frutos, se comparados ?queles mais adensados; da densidade de plantio do mamoeiro de 1667 plantas.ha-1 at? 4167 plantas.ha-1 a severidade da var?ola do mamoeiro aumenta de maneira linear; a var?ola do mamoeiro progride, exponencialmente, de baixo para cima e/ou das folhas mais velhas para as mais novas; a parte do fruto, preso ainda na planta, mais exposta aos fatores externos, ? a mais acometida pela var?ola do mamoeiro, se comparado com a parte voltada para o caule da mesma; analisando pelo aspecto reprodutivo do mamoeiro, o maior efeito da adi??o do leite de vaca cru na calda bordalesa ? notado na face menos exposta do fruto; e, mamoeiros com as folhas mais infectadas pela var?ola produzir?o frutos tamb?m mais acometidos por esta doen?a.

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-06-13T14:24:57Z No. of bitstreams: 1 2016 - Nilcileny da Silva Batista.pdf: 1300906 bytes, checksum: 7fcd57ffebf02aa316ae9107cf971e8d (MD5) / Made available in DSpace on 2017-06-13T14:24:57Z (GMT). No. of bitstreams: 1 2016 - Nilcileny da Silva Batista.pdf: 1300906 bytes, checksum: 7fcd57ffebf02aa316ae9107cf971e8d (MD5) Previous issue date: 2016-02-25 / Ag?ncia Norueguesa de Coopera??o para o Desenvolvimento, NORAD, Noruega. / The soil management in organic production systems requires the use of technologies that allow maintaining and improving their properties. In this sense, the use of alternatives such as intercropping, biochar, organic fertilization and inoculation with plant growth promoting bacteria in agriculture has been associated with improvements in productivity. In a first experiment, we evaluated the production of cassava in an intercropping system with maize and beans in different arrangements under organic farming. The experiment was carried out in SIPA, "Fazendinha Agroecol?gica Km 47", Serop?dica, RJ. The experimental design was randomized blocks, with five treatments and four replications. The treatments were: cassava, maize, cassava + maize + beans, cassava + maize, beans and maize. The dimension of the experimental plots was 6 x 5 m and 8 linear meters were sampled to evaluate the productivity of beans and maize. Twelve plants per plot were evaluated for cassava. The sowing of beans and maize took place at the same day cassava was planted. Beans were harvested at 90 days and the following variables were evaluated: yield, number of pods per plant, number of seeds per pod and weight of 100 grains. The maize was harvested at 91, 92 and 100 days after sowing (DAS) and the productivity of husked and dehusked spikes, spike length and spike diameter were measured. The cassava was harvested at 354 DAP after planting and the following variables were evaluated: productivity of roots and shoots, length and diameter of the roots. There was no significance for cassava production. However, the area equivalency index for the maize and cassava intercrop indicated an advantage of this system over the others. In a second experiment, we evaluated the potential of biochar and its interaction with microbial inoculants and organic fertilizer on crop performance. These tecnologies were evaluated in a crop rotation system: maize (Zea mays) var. Caatingueiro and beans (Phaseolus vulgaris) cv. Alessa were used in the first and second cycles, respectively. Maize seeds were inoculated with Azospirillum brasilense and beans with both Rhizobium tropici and Azospirillum brasilense. The experiment was in a 2 x 2 x 2 factorial scheme, with eight treatments and three replications, and the experimental design was a randomized block design. The treatments were the combinations of the presence or absence of three factors (biochar, fertilizer and inoculation. The biochar was applied at the dose of 15 Mg ha-?. The organic fertilizer ?Bokashi? was applied at the dose of 113 kg ha-? N. The plots were 3.0 x 3.50 m. The maize was harvested at 90 DAP and the following variables were measured: yield, weight of 100 g, length and diameter of spikes. The snap beans were harvested at 60 DAP and pod productivity and shoot biomass were evaluated. In maize fertilization and inoculation influenced weight of 100 grains under the conditions studied. For coinoculation beans green influenced dry matter mass and pods number, biochar influenced number of pods and dry mass of shoots in the presence of residual fertilization. We can conclude that the intercrop system and that the use biochar, Bokashi fertilization and, especially, inoculation with plant growth-promoting bacteria are possible alternatives for the production of cassava, maize and beans in organic farming. / O manejo do solo em sistemas org?nicos de produ??o requer o uso de tecnologias que permitam manter e aumentar sua produtividade. Neste sentido, o cons?rcio de culturas e o uso de biocarv?o, fertiliza??o com adubos org?nicos e a inocula??o com bact?rias promotoras do crescimento de plantas est?o entre as alternativas dispon?veis que t?m sido associadas ao aumento de produtividade. Num primeiro experimento, objetivou-se avaliar o consorcio de mandioca var. Ouro da Bahia, feij?o (Phaseolus vulgaris) cv. Valente e milho (Zea mays) var. Eldorado em diferentes arranjos, sob manejo org?nico. O experimento foi conduzido no SIPA ?Fazendinha Agroecol?gica Km 47?. O delineamento foi de blocos ao acaso, com cinco tratamentos e quatro repeti??es a saber: Mandioca solteira, Mandioca + milho + feij?o, Mandioca + milho, Milho + feij?o e Milho solteiro. As parcelas tinham 6x5 m. com oito metros lineares de ?rea ?til para feij?o e milho por parcela. Para mandioca, foram analisadas doze plantas por parcela. O plantio dos consortes ocorreu no mesmo dia do plantio da mandioca. O feij?o foi colhido aos 90 dias e foram avaliados: produtividade, n?mero de vagens por planta, n?mero de gr?os por vagem e peso de 100 gr?os. O milho foi colhido aos 91, 92 e 100 DAP e foram avaliada produtividade de espigas, comprimento e di?metro das espigas. Aos 354 DAP, colheu-se a mandioca para avaliar: produtividade de ra?zes e parte a?rea, comprimento e di?metro das ra?zes. N?o houve diferen?a significativa para produtividade da mandioca, mais houve diferen?a para produtividade de feij?o e do milho. O ?ndice de Equival?ncia de ?rea (IEA) de 1,26 para o cons?rcio mandioca e milho, indicou vantagem. Num segundo experimento, objetivou-se avaliar o potencial do biocarv?o e sua intera??o com inoculantes e fertiliza??o org?nica no desempenho de cultivos. Para tal, foi realizado um cultivo em sucess?o onde, no primeiro ciclo foi utilizado o milho var. Caatingueiro e no segundo ciclo o feij?o vagem cv. Alessa. As sementes de milho foram inoculadas com Azospirillum brasilense e as de feij?o vagem com Rhizobium tropici e Azospirillum brasilense. O experimento foi um fatorial 2 x 2 x 2, com oito tratamentos entre combina??es dos fatores biocarv?o, aduba??o e inocula??o (presen?a e aus?ncia) e tr?s repeti??es. O delineamento experimental foi em blocos ao acaso. Aplicou-se a lan?o15 Mg ha-? de biocarv?o por parcela. A fertiliza??o, com composto Bokashi, foi 113 kg ha-? de N. As parcelas tinham 3,0 x 3,50 m. O milho foi colhido aos 90 DAP e analisou-se: produtividade, peso de 100 gr?os, comprimento e di?metro de espigas. O feij?o vagem foi colhido aos 60 DAP e foram analisados produtividade de vagem e parte a?rea. Para o milho a aduba??o e a inocula??o influenciaram massa de 100 gr?os, nas condi??es estudadas. No feij?o vagem, a inocula??o influenciou massa seca de vagens e numero de vagens, o biocarv?o influenciou n?mero de vagens e massa seca de parte a?rea na presen?a de aduba??o residual. Pode-se concluir que o cons?rcio, a inocula??o, aduba??o org?nica s?o alternativas poss?veis para incrementar produtividade de culturas, a renda e seguran?a alimentar do produtor

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-07-12T18:54:47Z No. of bitstreams: 1 2016 - Angelo Gomes de Oliveira Junior.pdf: 1739096 bytes, checksum: 0add068fbe6a3c053e8c653b8b2f1829 (MD5) / Made available in DSpace on 2017-07-12T18:54:47Z (GMT). No. of bitstreams: 1 2016 - Angelo Gomes de Oliveira Junior.pdf: 1739096 bytes, checksum: 0add068fbe6a3c053e8c653b8b2f1829 (MD5) Previous issue date: 2016-08-31 / The aim of this research was study the use of simplified irrigation controller (SIC) in 4 tensions values to determine the best tension for the development of seedlings of Schinus terebinthifolius in protected environment. The treatments were: T 1 = 4 kPa of tension, T 2 = 6 kPa of tension, T 3 = 8 kPa of tension and T 4 = 10 kPa of tension. The seedlings were grown in plastic bags with 3534 cm3 of a volume. The parameters evaluated were diameter at breast height (D), height (H), relation H / D, dried mass weight of roots (DMWR), dried mass of aerial part (DMAP), Dickson quality index (DQI), water use efficiency (WUE) and chlorophyll content (IFC). The evaluations were performed every two weeks, from 30 days after transplanting up to 105 days. The results indicated that the 6 kPa of tension consists in optimum operating value for the system proposed in terms of experimental conditions studied because it represents the best growth ratio by volume of water used for irrigation. In this treatment the average results per plant were: D= 5.61 mm; H= 33.20 cm; H / D= 5.97; DMAP= 4.78 g; DMWR= 2.44 g; DQI= 0.91; WUE= 1.53 and IFC= 56.55. It's not recommended the production of seedlings of Schinus terebinthifolius using 10 kPa of tension because there was a high mortality. / O objetivo deste trabalho foi avaliar a utiliza??o do acionador simplificado de irriga??o (ASI) em 4 (quatro) diferentes tens?es de ?gua no substrato para determinar a melhor tens?o para o desenvolvimento das mudas de Aroeira-Pimenteira (Schinus terebinthifolius) em ambiente protegido. Os tratamentos utilizados foram: T 1 = Tens?o de 4 kPa, T 2 = Tens?o de 6 kPa, T 3 = Tens?o de 8 kPa e T 4= Tens?o de 10 kPa. As mudas foram produzidas em sacos pl?sticos com volume de 3.534 cm3. Os par?metros avaliados foram di?metro de colo (D), altura (H), rela??o altura por di?metro de colo (H/D), fitomassa seca das ra?zes (MSR), fitomassa seca parte a?rea (MSPA), ?ndice de qualidade de Dickson (IQD), efici?ncia de uso de ?gua (EUA) e clorofila total (IFC). As avalia??es foram realizadas quinzenalmente, a partir dos 30 dias ap?s o transplante at? os 105 dias. Os resultados obtidos indicaram que a tens?o de 6 kPa compreende a tens?o ?tima de opera??o para o sistema proposto diante das condi??es experimentais estudadas e isso deve-se a melhor rela??o crescimento por volume de ?gua utilizado na irriga??o. Neste tratamento os resultados m?dios por planta foram: D= 5,61 mm; H= 33,20 cm; H/D= 5,97; MSPA= 4,78 g, MSR= 2,44 g; IQD= 0,91; EUA= 1,53 g L-1 e IFC= 56,55. N?o se recomenda a produ??o de mudas de aroeira utilizando uma tens?o de 10 kPa pois houve uma alta taxa de mortalidade das mudas.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-07-12T19:09:00Z No. of bitstreams: 1 2015 - Daiana de Fatima Portella Franco.pdf: 10785257 bytes, checksum: 88b5e7659327980d96446ec26df23a79 (MD5) / Made available in DSpace on 2017-07-12T19:09:00Z (GMT). No. of bitstreams: 1 2015 - Daiana de Fatima Portella Franco.pdf: 10785257 bytes, checksum: 88b5e7659327980d96446ec26df23a79 (MD5) Previous issue date: 2015-08-27 / CAPES / CNPq / FAPERJ / Cancer is a generic term related to more than 100 types of diseases which resemble each other by their disorganized cellular growth. HSP90 are ATP-dependent chaperones responsible for the activation and stabilization of more than 200 proteins. Most of these proteins are connected to cancer and need HSP90 to execute their activities. Thus, HSP90 inhibitors may indirect inhibit plenty oncogenic proteins. According to the literature, there are N-terminal and C-terminal domains, nevertheless, C-terminal inhibitors present more advantages. Then, the advancement of C-terminal inhibitors represents an applicable alternative and an intense field of study. Novobiocin is the first compound identified as C-terminal domain inhibitor. Nowadays, Novobiocin analogues have been synthesized, besides its structure-activity relationship elucidated in order to develop more potents analogues. For that reason, the goal of this project is to obtain 2 analogue series of Novobiocin. The scheme of these series was based on maintaining the coumaniric part presented on Novobiocin: isosteric replacement of the amide group that binds coumarin to the 4-hydroxy-3-(3-methylbut-2-yl)-benzamide, by the [1,2,3]-triazole; and exploration of methyl groups (AN1) and hydroxyl (AN2) in substitution of subunit noviose. AN1 series (76a-g) and AN2 (77a-g) were synthesized from the followed reactions: 7-hydroxy-coumarine o-methylation (83); 7-methoxy-coumarine 3-bromation (82); Sonogashira cross-coupling from 3-bromo-7-R-coumarine (81a-b); 7-R-3-((trimethylsilyl)ethynyl-coumarine trimethylsilyl deprotection (88a-b); and lastly, synthesis of the triazole ring, through cicloaddition reaction, 1,3-dipolar catalysed by copper (CuAAc), using 3-ethynyl-7-R-coumarine (80a-b) and aromatic azides. It is worth taking into consideration that 3-bromo-7-R-coumarine (81b) was obtained from the key compound, 3-bromo-7-R-methoxy-coumarine (81a) by o-demethylation reaction. 12 compounds were obtained (76a-g) and 8 of them (76a-b, 77d) were nicely purified and then, characterized by spectroscopic techniques (IR, 1H and 13C NMR). The ?one-pot? synthesis of 7-methoxy-3-(1H-1,2,3-triazole-4-phenyl)-coumarine 76b from 88a compound (Yield=86%) was more efficient than the one realized in two steps (global yield=47,2%). Results are potential and satisfactory, moreover there is no citation in any literature about biological activities of the synthesized compounds. Continuing this work, the pure compounds (76a-b, 77d) will be tested on breast cancer cell lines SkBr3 and MCF-7. / O c?ncer ? um termo gen?rico que se refere a um conjunto de mais de 100 tipos de doen?as, as quais se assemelham pelo crescimento celular desordenado. As HSP90 s?o chaperonas ATP-dependente respons?veis pela ativa??o e estabiliza??o de mais de 200 prote?nas. Muitas destas prote?nas s?o relacionadas ao c?ncer e necessitam da HSP90 para exercerem suas atividades. Assim, inibidores da HSP90 s?o promissores, pois possibilitam inibir de maneira indireta v?rias prote?nas oncog?nicas simultaneamente. S?o descritos inibidores dos dom?nios N-terminal e C-terminal, sendo estes mais vantajoso que aqueles. O Novobiocin foi o primeiro composto identificado como inibidor do dom?nio C-terminal da HSP90. Atualmente, diversos an?logos ao Novobiocin tem sido sintetizados, afim de se estabelecer a rela??o estrutura-atividade, objetivando desenvolver an?logos mais potentes. Assim, o objetivo deste trabalho foi obter duas s?ries an?logas ao Novobiocin. O planejamento das s?ries foi baseado na manuten??o do n?cleo cumar?nico presente no Novobiocin; troca isost?rica do grupo amida, que liga a cumarina ao anel 4-hidroxi-3-(3-metillbut-2-il)-benzamida, pelo anel [1,2,3]-triazol; e explora??o de grupos metoxila (AN1) e hidroxila (AN2) em substitui??o ? subunidade noviose. As s?ries AN1 (76a-g) e AN2 (77a-g) foram sintetizadas a partir das rea??es de: O-metila??o da 7-hidroxi-cumarina (83); broma??o da posi??o 3 da 7-met?xi-cumarina (82); rea??o de acoplamento cruzado de Sonogashira, a partir da 3-bromo-7-R-cumarina (81a-b); desprote??o do grupamento trimetilsilila da 7-R-3-((trimetilsilil)etenil)-cumarina (88a-b); e por fim, s?ntese do anel triaz?lico, atrav?s da rea??o de cicloadi??o 1,3-dipolar catalisada por cobre (CuAAc), utilizando 3-etenil-7-R-cumarina (80a-b) e azidas arom?ticas. Vale ressaltar que, a 3-bromo-7-hidr?xi-cumarina (81b) foi obtida a partir do composto chave, 3-bromo-7-met?xi-cumarina (81a) via rea??o de O-demetila??o. Obteve-se 12 compostos (76a-g e 77a-g) sendo que 8 (76a-b, 77d) foram, satisfatoriamente, purificados e, ent?o, caracterizados por t?cnicas espectrosc?picas (IV, RMN H e C). Tamb?m foi constatado que a s?ntese ?one-pot? de 7-metoxi-3-(1H-1,2,3-triazol-4-fenil)-cumarina 76b partir do composto 88a (R=86%) foi mais eficiente que a realizada em duas etapas, desilina??o/CuAAc (Rglobal= 47,2%). Os resultados s?o satisfat?rios e promissores, al?m disso n?o h? na literatura descri??o das atividades biol?gica dos compostos sintetizados. Em continua??o a este trabalho, os compostos puros (76a-b, 77d) ser?o devidamente ensaiados frente a c?lulas das linhagens de c?ncer de mama SkBr3 e MCF-7.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-07-12T19:19:51Z No. of bitstreams: 1 2015 - Matheus Gomes Ferreira.pdf: 3047516 bytes, checksum: 3232f27bdf2c2fd0b3942a410158e76e (MD5) / Made available in DSpace on 2017-07-12T19:19:51Z (GMT). No. of bitstreams: 1 2015 - Matheus Gomes Ferreira.pdf: 3047516 bytes, checksum: 3232f27bdf2c2fd0b3942a410158e76e (MD5) Previous issue date: 2015-07-10 / CAPES / In this work were prepared by coprecipitation and characterized by powder XRD and FTIR compounds of the hydrotalcite type, known as Layered Double Hydroxides (LDH), intercalated with the glyphosate anion (GLYP), and the conditions of preparation and the stoichiometric ratio Mg:Al:GLYP were studied. The best condition observed was under reflux for 30 hours and stoichiometric ratio 2: 1: 1 for Mg+2, Al+3 and GLYP, as indicated by the characteristic bands of LDH intercalated with glyphosate and no other bands present, which could be assigned to other intercalated ions or to free glyphosate. Under those preparation conditions the LDH interlamellar spacing was 0.62 nm, compatible with the intercalation of glyphosate. The controlled release of glyphosate was studied using ion exchange reactions of Layered Double Hydroxides containing glyphosate with an aqueous medium containing carbonate, chloride or nitrate anions. In those cases the glyphosate was quantified spectrophotometrically by Ruhemann's purple method (?max = 570 nm), and the initial releasing rates of 0.65 mg/ml/h (carbonate), 0.14 mg/ml/h (nitrate) and 0.08 mg/ml/h (chloride) were measured. Regarding the XRD patterns of the ion-exchanged products, it was observed that the structure of HDL was maintained, but with the reduction of the interlayer spacing in all cases, having a sufficient size for the anion of the involved ion exchange, but not enough for the presence of GLYP, demonstrating so that the exchange was successful. / Neste trabalho foram preparados por coprecipita??o e caracterizados por DRX de p? e FTIR compostos do tipo hidrotalcita, conhecidos como Hidr?xidos Duplos Lamelares (HDL), intercalados com o ?nion glifosato (GLYP), e foram estudadas as melhores condi??es de prepara??o e a raz?o estequiom?trica Mg:Al:GLYP. A melhor condi??o foi sob refluxo por 30 horas e raz?o estequiom?trica 2:1:1 para Mg+2, Al+3, e GLYP, a partir da observa??o das bandas caracter?sticas no espectro de FTIR de um HDL intercalado com glifosato, sem outras bandas presentes que pudessem ser atribu?das a outros ?ons intercalados ou ao glifosato livre. Nessas condi??es de preparo o espa?amento interlamelar do HDL foi de 0,62 nm, compat?vel com a intercala??o do glifosato. A libera??o controlada do glifosato foi estudada atrav?s de rea??es de troca i?nica dos Hidr?xidos Duplos Lamelares contendo glifosato com um meio aquoso contendo os ?nions carbonato, cloreto ou nitrato. Nestes casos o glifosato foi quantificado espectrofotometricamente pelo m?todo do p?rpura de Ruhemann (?max = 570 nm), e foram obtidas as taxas de libera??o iniciais de 0,65 mg/ml/h para carbonato, 0,08 mg/ml/h para cloreto e 0,14 mg/ml/h para nitrato. Nos difratogramas de raios-X dos produtos das trocas i?nicas, em todos os casos foram observadas a manuten??o da estrutura do HDL e a diminui??o do espa?o interlamelar, de 0,62 nm para valores entre 0,33 e 0,35 nm, tamanho suficiente para o ?nion da troca i?nica envolvido, mas n?o suficiente ainda para a presen?a de GLYP, demonstrando assim que a troca foi bem sucedida.

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-07-18T11:39:10Z No. of bitstreams: 1 2016 - Maria Otavia Battaglin Loureiro.pdf: 4025778 bytes, checksum: e7d43b2a8bfdc8b74bfe2178ec6dbf5c (MD5) / Made available in DSpace on 2017-07-18T11:39:10Z (GMT). No. of bitstreams: 1 2016 - Maria Otavia Battaglin Loureiro.pdf: 4025778 bytes, checksum: e7d43b2a8bfdc8b74bfe2178ec6dbf5c (MD5) Previous issue date: 2016-07-22 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico - CNPq / This dissertation deals with ways of life and trajectories of small fruit farmers of Alvorada, in the municipality of Nova Tebas in the state of Paran?. The text itself is based on the ethnographic study between sites, crops, homes and kitchens of farmers linked to Cooperatvama ? cooperative of small producers of organic fruit ? during the months of March and April 2015. Through the narratives of families accompanied, we seek to understand their ways of being and living in the world. In the relation between the cooperative members, we'll see how their reading of life and daily practices pervade the religious, and incorporate a speech of balance and care associated with organic farming and agro-ecological practice. In this sense, we can think in this work as an attempt to organization of the facts in my ethnographic experience, that as the plot unfolds indicates tracks of important components of the sociality of my interlocutors. Through the descriptions of the daily practices of the investigated group we seek to show how one forms and modulates collectivities. We seek thus rescue the ?domestic? spaces and activities putting the house and the woman / Esta disserta??o trata do cotidiano, dos modos de vida e trajet?rias dos agricultores e agricultoras de Alvorada, no munic?pio de Nova Tebas no interior do Paran?. O texto apresentado tem como base o estudo etnogr?fico realizado entre os s?tios, lavouras, casas e cozinhas dos agricultores ligados a Cooperatvama ? cooperativa de pequenos produtores de frutas org?nicas ? durante os meses de mar?o e abril de 2015. Atrav?s das narrativas das fam?lias acompanhadas buscamos compreender seus modos de ser e viver no mundo. Na trama entre os cooperados e cooperadas, vemos como suas leituras de vida e pr?ticas cotidianas perpassam pela religiosidade, e incorporam um discurso do equil?brio e do cuidado, associados com a agricultura org?nica. Nesse sentido, podemos pensar nesta disserta??o como uma tentativa de organiza??o dos fatos vividos e narrados a partir de minha experi?ncia etnogr?fica, que conforme o enredo se desenrola indica pistas de componentes importantes da socialidade de meus interlocutores. Atrav?s das descri??es das pr?ticas cotidianas do grupo investigado procuramos evidenciar como se constituem e se modulam coletividades. Buscamos, assim, resgatar atividades e espa?os ?dom?sticos? descentrando o debate que outrora colocou ? margem a casa e a mulher

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-07-25T18:59:26Z No. of bitstreams: 1 2017 - Gerson Jos? Yunes Antonio.pdf: 1945359 bytes, checksum: c4d13f26bf950174b314d3a74f465ab8 (MD5) / Made available in DSpace on 2017-07-25T18:59:26Z (GMT). No. of bitstreams: 1 2017 - Gerson Jos? Yunes Antonio.pdf: 1945359 bytes, checksum: c4d13f26bf950174b314d3a74f465ab8 (MD5) Previous issue date: 2017-02-22 / This dissertation analyzed strategy of endogenous territorial development - ETD for the establishment of social technology as from process at participatory construction of agroecological knowledge at the hills enviroment in the mountain region of Rio de Janeiro and, demonstrated competitive advantages, local potential and challenges after climate tragedy of January 2011. The study characterized and evaluated potential methodological used or with potential, as well as identify determinants for the adoption of agroecological practices in their production systems, especially regarding the use of cover crop. It were considered, in proposing strategies to expand the adoption of agroecological practices, the 3rd section' microcatchments in Nova Friburgo district. It were used secondary data, literature review, semi structured interviews with actors involved processes in the study area and focus groups with key people in order to observe social behavior, where it became clear the need to improve the efforts of institutions and adaptation to time and the wishes of farmers, with exemplification of the economic gains from the agroecological transition. The way to expand the role and conscious participation in social capital formation will inevitably require organizational, structural and training activities. / A presente disserta??o analisa estrat?gia de desenvolvimento territorial end?geno - DTE para a constitui??o de tecnologia social a partir de processo de constru??o participativa de conhecimentos agroecol?gicos nos ambientes de montanha da Regi?o Serrana Fluminense. S?o evidenciadas vantagens competitivas, potencialidades locais e desafios, ap?s trag?dia clim?tica que acometeu a regi?o em janeiro de 2011. A partir da caracteriza??o e avalia??o das propostas metodol?gicas utilizadas ou com potencial, s?o apresentados determinantes para a ado??o de pr?ticas agroecol?gicas nos sistemas de produ??o, em especial quanto ao uso de plantas de cobertura. Foram consideradas, na proposi??o de estrat?gias para a amplia??o da ado??o de pr?ticas agroecol?gicas, as microbacias do 3? distrito do munic?pio de Nova Friburgo. Utilizou-se dados secund?rios, revis?o bibliogr?fica, entrevistas semiestruturadas com atores participantes dos processos na ?rea de estudo e grupo focal com pessoas-chave, com objetivo de observar o comportamento social. ? evidenciada a necessidade de aprimoramento dos esfor?os das institui??es e adequa??o ao tempo e aos anseios dos agricultores, com exemplifica??o dos ganhos econ?micos decorrentes da transi??o agroecol?gica. O caminho para ampliar o protagonismo e a participa??o consciente com forma??o de capital social passa necessariamente por a??es organizativas, estruturais e formativas.