Mrs. Esther Brown, a White Jewish woman, made a significant contribution to the desegregation of public education in the 1940s. This research study establishes her role in the development of desegregation policy in public education in the contemporary public narrative on desegregation policy in the early1950s, the challenges to the implementation of the desegregation of public education, and the local context that led to the national fight against desegregation. The significance of this study is to highlight the struggles that activists, many of whom are unsung heroes, went through to navigate the struggles and processes that enabled the desegregation of public education in America.

A avicultura brasileira assumiu nos últimos anos importante papel dentro do PIB nacional, e a produção de ovos dentro do setor vem tomando cada vez maior importância. No decorrer dos últimos anos vários avanços foram observados no que se refere ao melhoramento genético de poedeiras comerciais, no sentido de maiores produtividade e longevidade. Ambos parâmetros podem ser afetados pela atuação de radicais livres e nutrição adequada. Embora o organismo vivo apresente mecanismos fisiológicos que visam diminuir os danos causados por radicais livres, a suplementação destes pode promover benefícios, desde a reprodução da ave até o desempenho produtivo de poedeiras oriundas de matrizes suplementadas com substâncias antioxidantes, dentre elas a cantaxantina. Recentemente vários estudos têm sido feitos para a nutrição adequada das aves com utilização adequada de aminoácidos, energia, fontes minerais, enzimas, etc., para que atinjam o máximo potencial produtivo. Porém, os níveis vitamínicos têm sido pouco estudados, e normalmente com foco em frangos de corte e/ou níveis mínimos a serem trabalhados para que o animal não entre em deficiência, trabalhos com níveis vitamínicos visando produtividade máxima em poedeiras comerciais não foram encontrados na literatura pesquisada. O presente estudo teve como objetivo avaliar poedeiras comerciais modernas, da linhagem Hisex Brown, em duas situações: origem de matrizes suplementadas com cantaxantina e 25 hidroxicolecalciferol, e níveis vitamínicos altos contra níveis vitamínicos praticados comercialmente. O experimento foi inteiramente casualizado e ocorreu nas dependências da granja experimental da USP de Pirassununga. As aves foram alojadas com 1 dia de idade e mantidas até as 70 semanas, passando pelas fases de cria, recria e produção, em que tiveram os parâmetros zootécnicos observados e comparados. Como resultados, observou-se no trabalho quanto à suplementação das matrizes: melhor peso corporal aos 35 dias, e daí até o final da recria (p<0,05), não apresentando maiores consumos de ração em relação ao grupo controle. Na fase de produção observou-se melhor peso dos ovos e espessura da casca para o grupo tratado e maior resistência da casca para o grupo controle (p<0,05). Quanto aos níveis vitamínicos observou-se: vantagem em peso aos 35 dias, o que não se observou às 17 semanas, e observou-se menor conversão alimentar no grupo controle. Durante a fase de produção, o grupo tratado apresentou resultados melhores em peso de ovos e resistência da casca (p<0,05) / Brazilian poultry has been taken an important part on brazilian economy on the past few years, and the egg production has been taken an important part on brazilian poultry. During the last years, several improvements has been done on the way of better production and longer lifetime of the layers. Both parameters are influenced by free radicals action and the correct use of nutrition. Although life animals have system to avoid damages caused by free radicals, suplementation with antioxidants can bring them benefits, since the reproduction of the breeder, until the production of the layer provided from light breeders suplemented, one of these substances is cantaxantin. Recently, studies have been conduced to determine the appropriate levels of aminoacids, energy, minerals, enzymes, etc., everything to permit the animal, the maximum production. However, vitamin levels haven´t been studied that much, and normally, the goal of theses studies are broilers and/or the minimum necessary to don´t let animals be deficient. This study had the goal to evaluate layers of Hisex Brown lineage, on two situations: the suplementation of the light breeder with cantaxantin and 25 hidroxicolecalciferol, and optimum vitamin nutrition against the ones comercially used. The experiment was entirely randomized designed, and occurred on the experimental houses of USP of Pirrasununga. The day old pullet were housed and maintained there for 70th weeks old, going throw rearing and production period, on which had its parameteres evaluated. As the results, on the work with breeders suplementation better body weight at 35 days old, and than until the end of rearing period (p<0,05), without higher feed consumption then control group. On the production period it was observed higher egg weight and thickness of the shell (p<0,05) for the suplemented breeder group, but better shell resistance for the control group. For the work wtih optimum vitamin nutrition results it was observed improvement of body weight at 35 days old (p<0,05) on the OVN group, but it was not observed until the end of rearing period. During the production time it was not observed any improvement but the weight and resistance of eggs on OVN group (p<0,05)

Made available in DSpace on 2014-08-20T14:38:48Z (GMT). No. of bitstreams: 1 dissertacao_veronica_lisboa_santos.pdf: 1521617 bytes, checksum: 22e6fe07f10db8cba96cc690f42e78ed (MD5) Previous issue date: 2012-02-16 / In poultry production systems, molting procedure and the use of substitutes for corn and soybean meal represents good ways to reduce feed costs in poultry production. That s true because farmers skip rearing phase of layers life using molting procedure and the use of grains with similar nutritional requirements as corn and soybean meal are less expensive than those usual used in poultry diets. In this case, whole rice brain (WRB) it s consider a good choice due to its high production and lower market price, justifying the use in animal diets. However, higher levels of WRB in poultry diets show negatives effects due to antinutritional factors as phytic acid and non-starch polysaccharides. Adding enzymes in WRB diets it s a way to increase digestibility and reduce the negative aspects of this factors. During 112 days, divided in four production cycles of 28 days each, performance and egg quality of layers after molting and fed with WRB diets with different energy valorization levels and supplemented with enzymes were evaluated. A total of 480 Hisex Brown layers with 95 weeks old were randomly distributed in groups of five birds per cage in a dark house poultry facility. Treatments consists in 8 different diets, with 12 replicates per treatment, as following: T1: control corn and soybean meal (C+SBM); T2: C+SBM with enzyme supplementation (ES) on top; T3: C+SBM, without ES (100 kcal ME/Kg); T4: C+SBM, with ES (100 kcal ME/Kg); T5: C+SBM, 20% WRB, without ES; T6: C+SBM, 20% WRB, with ES on top; T7: C+SBM, 20% WRB, without ES (100 kcal ME/Kg); T8: C+SBM, 20% WRB, with ES (100 kcal ME/Kg). Performance parameters evaluated were body weight (BW), feed intake (FI), egg production (%EP), feed conversion per dozen (FC/dz) and per mass (FC/m). The parameters used to determine egg quality were egg weight (EW), egg mass (EM), specific gravity (SG), shell thickness (ST), shell weight (SW), Haugh unit (HU), yolk weight (YW), albumen weight (AW) and yolk color (YC). Results showed higher FI, BW, EW and AW in layers fed with WRB diets, which also showed a decrease in YC. Enzyme supplementation and energy valorization (100 kcal ME/Kg) in C+SBM diets improved FC/dz. / Algumas alternativas aparecem em destaque quando o objetivo é diminuir os custos com a ração, entre elas, está a realização da muda forçada e o uso de alimentos alternativos ao milho e farelo de soja. Aves que passam pela prática da muda forçada entram em um segundo ciclo produtivo, dispensando o investimento do produtor em um novo lote. O farelo de arroz integral (FAI) é uma boa alternativa ao milho em função do seu volume de produção, por não competir com outras culturas e por possuir custos de produção relativamente baixos, justificando-se deste modo, sua utilização em rações para animais Entretanto, sua utilização na alimentação animal é limitada, devido a presença de fatores antinutricionais, tais como o ácido fítico e os polissacarídeos não amiláceos. As enzimas são acrescentadas à ração animal com a finalidade de aumentar a sua digestibilidade, remover fatores antinutricionais, melhorar a disponibilidade dos nutrientes, bem como por razões. Durante 112 dias experimentais, divididos em quatro ciclos produtivos, de 28 dias cada, avaliou-se a inclusão de farelo de arroz integral (FAI) e de um complexo enzimático (CE), com diferentes valorizações energéticas, na dieta de poedeiras em segundo ciclo de produção sobre desempenho produtivo e qualidade dos ovos. O estudo contou com 480 poedeiras semipesadas da linhagem Hisex brown, com idade inicial de 95 semanas. As aves foram mantidas em galpão tipo dark house e alojadas cinco a cinco em gaiolas de postura. O delineamento utilizado foi o inteiramente casualizado com oito tratamentos e 12 repetições, sendo: T1: controle milho e farelo de soja (M + FS), sem FAI e sem CE, T2: controle, com CE (sem valorização energética on top), T3: controle, sem CE (100 kcal EM/kg), T4: controle, com CE (100 kcal EM/kg), T5: controle + 20% FAI, sem CE, T6: controle + 20% FAI, com CE (sem valorização energética on top), T7: controle + 20% FAI, sem CE (100 kcal EM/kg) e, T8: controle + 20% FAI, + CE (100 kcal EM/kg). Foram avaliadas as seguintes variáveis de desempenho: peso vivo (PV), consumo de ração (CR), percentual de ovos produzidos (PDOV), conversão alimentar por dúzia (CA/Dz) e conversão alimentar por massa (CA/M); para as variáveis de qualidade externa dos ovos considerou-se: peso dos ovos (POV), massa dos ovos (MOV), gravidade específica (GE), espessura das cascas (EC) e peso da casca(PC) e, para as variáveis de qualidade interna dos ovos: unidade Haugh (UH), pesos da gema (PG), do albúmen (PA) e coloração da gema (CG). Os resultados indicaram que as aves que receberam dietas contendo farelo de arroz integral consumiram mais ração, apresentaram maior peso vivo, aumento no peso do ovo e do albúmen, mas gemas menos pigmentadas. O complexo enzimático valorizado em 100kcal⁄EM adicionado em dietas a base de milho e farelo de soja melhorou a conversão alimentar por dúzia de ovos.

Brown macroalgae or brown seaweed is a promising source of ethanol that may avoid the challenges of arable land use, water use, lignin content, and the food vs. fuel debate associated with first generation and cellulosic ethanol sources; however, this promise is challenged by seaweed’s high water content, high ash content, and natural composition fluctuations. Notably, lifecycle studies of seaweed ethanol are lacking in the literature. To address this gap, a well-to-wheel model of ethanol production from farmed brown seaweed was constructed and applied to the case of Saccharina latissima farming in British Columbia (BC), Canada, to determine energy return on energy invested (EROI), carbon intensity (CI), and near shore seaweed farming production potential for seaweed ethanol and to examine the production cost of seaweed ethanol. Seaweed farming and ethanol production were modeled based on current BC farming methods and the dry grind corn ethanol production process; animal feed was included as an ethanol co-product, and co-product credits were considered. A seaweed ethanol yield calculation tool that accounts for seaweed composition was proposed, and a sensitivity study was done to examine case study data assumptions. In the case study, seaweed ethanol had lower CI than sugarcane, wheat, and corn ethanol at 10.1 gCO2e/MJ, and it had an EROI comparable to corn ethanol at 1.78. Seaweed ethanol was potentially profitable due to significant revenue from animal feed sales; however, the market for seaweed animal feed was limited by the feed’s high sodium content. Near shore seaweed farming could meet the current demand for ethanol in BC, but world near shore ethanol potential is likely an order of magnitude lower than world ethanol production and two orders of magnitude lower than world gasoline production. Composition variation and a limited harvest season make solar thermal or geothermal seaweed drying and storage necessary for ethanol production in BC. Varying seaweed composition, solar thermal drying performance, co-product credits, the type of animal feed produced, transport distances, and seaweed farming performance in the sensitivity study gave an EROI of over 200 and a CI of -42 gCO2e/MJ in the best case and an EROI of 0.64 and CI of 33 gCO2e/MJ in the worst case. Co-product credits and the type of animal feed produced had the most significant effect overall, and the worst cases of seaweed composition and solar thermal seaweed drying system performance resulted in EROI of 0.64 and 1.0 respectively. Brown seaweed is concluded to be a potentially profitable source of ethanol with climate benefits that surpass current ethanol sources; however, additional research into seaweed animal feed value, co-product credits, large scale seaweed conversion, and the feasibility of solar thermal or geothermal seaweed drying is required to confirm this conclusion. / Graduate

The relationships between brook trout (Salvelinus fontinalis), brown trout (Salmo trutta), non-game fish populations and selected physical and chemical parameters were investigated in four streams draining the Blue Ridge Mountains in north-central Virginia during low flow conditions in August, 1981 and 1982. Multiple regression and discriminant function analysis identified average stream width and maximum stream temperature as the main environmental factors related to brook and brown trout abundance and distribution. Furthermore, consistent fish species assemblages relative to brown trout distribution were observed in the study streams. The movements of tagged brown trout in two streams were assessed for the period from June 1981 to July 1982. Most brown trout remained within 200 m of original tagging sections, 98.7% in the Conway River (78 out of 79) and 71.4% in the North Fork Thornton River (7 out of 9). The 1979, 1978 and 1977 year class fish (ages 2+, 3+ and 4+) exhibited extremely restricted movements and were invariably recaptured at original capture locations while the 1980 year class (age 1+) displayed small net upstream movements (<80 m) throughout the period. Two 1980 year class individuals displayed extensive movements (17.0 km downstream and 1.2 km upstream). These movements were characteristic of other stream resident brown trout populations. Results of this study suggest that brown trout may expand their range upstream into currently allopatric brook trout zones. It would likely be a slow but steady process which could be accelerated by infrequent long-range movements. The potential for establishment of reproducing brown trout populations and impacts of brown trout on native brook trout populations can be assessed utilizing fish species assemblages, average stream width and maximum stream temperature prior to further brown trout introductions in this region of Virginia. / Master of Science

M. Tech. Agriculture / Brown rot caused by Monilinia laxa is the main pre and postharvest disease of peaches; it affects the shelf life and marketability of peaches. Increasing consumer concern regarding food safety makes it necessary to search for natural environmentally friendly alternative products for postharvest disease control. The objective of this study is to develop an environmentally friendly essential oil technology for the control of brown rot (M. laxa) in peaches at postharvest stage to replace the currently used synthetic fungicide (Iprodione)

In 2000 the European Union introduced the Water Framework Directive, new legislation that regulates the use of surface waters within the European Community. The goal of this legislation is to protect, enhance and restore all surface waters within the Community to Good Surface Water Status. Good-Status is described as having low levels of anthropogenic distortion in its hydro-morphological and physiochemical components as well as possessing biota that would normally be associated with the type-specific aquatic ecosystem. The assessment of ecosystem status is to be defined by comparisons with intact representative reference sites, by using modelling techniques that define reference conditions, a combination of the two, or expert judgement. As undisturbed aquatic ecosystems are rare or non-existent in Europe the base-line data will have to be defined using the latter methodologies. The aim of this project is to help define reference conditions for lotic systems in Europe based on the physical instream habitat parameters of a resident species. Brown trout (Salmo trutta), a ubiquitous and well studies species endemic to Europe, was used as the target organism to develop the assessment protocol. The project focused on the requirements this species has of aspects of its physical habitat; specifically, its usage of depth, velocity, and substrate. An extensive survey of the scientific literature was used to define the requirements trout has for the three physical parameters at four life stages. These are the spawning, nursery, juvenile and adult-resident life stages. These requirements were expressed as tolerance profiles, which defined suitable, usable and not-suitable habitat. The methodology was demonstrated by evaluating the physical habitat available at six reaches in three small streams, March, Burnhouse and Bin Burns, which drain into the Carron Valley Reservoir in central Scotland. From the perspective of water depth, these streams seem best suited as nursery areas, are less well suited as juvenile habitat, and do not appear to be well matched for adult residents. The assessment of both velocity and substrate indicated that the portion of the study reaches available for use by resident brown trout increased with trout size. The assessment of all three physical habitat parameters at all study reaches found variable portions of the streams suitable for use by spawning trout. When the habitat variables are integrated all stream segments streams seem best suited as nursery and spawning areas. To a lesser extent juvenile trout can use these burns and very little habitat is available for use by adult resident trout. The tolerance profiles that were created in this study are standardized assessment criteria that when compared with stream survey data can produce an appraisal of habitat availability in any fluvial freshwater system that supports populations of brown trout (Salmo trutta). The assessment method can be combined to produce an integrated habitat assessment, using both an index and by the calculation of Froude number, which is a more realistic approach than the assessment of individual habitat parameters as salmonids choose their microhabitat based on multiple factors. This approach allows an investigator to determine the amount and relative portion of useable habitat and to determine the quality of that habitat. Finally, by examining the physical habitat variable that most strongly correlates with the final integrated habitat distribution the individual habitat parameter that is most important to the distribution of physical habitat at a site can be determined. While this technique would certainly benefit from further development it does show potential to aid in physical habitat assessment of trout streams.

Sweden is often considered to be one of the world's most tolerant countries. This is often illustrated by questions surrounding religious expression, such as if it should be tolerated to have a veil on when working in healthcare or schools? At the same time, we can see current examples of decreasing tolerance in some parts of Europe and the world. The Hungarian Government has annulled gender studies on the basis that we are born either as women or men. Meanwhile we ask ourselves in Sweden whether parties that advocate a racial war will have right to demonstrate on our streets. In this way, tolerance seems to be linked to the contradiction that exists within democracy between the will of the people and the individual. Between those which may be included, and those which cannot be included at all - the excluded. Because democracy always needs to draw a line and this line is today redrawn in the name of tolerance. This essay aims to investigate and problematize rhetoric’s relation to politics and democracy based on tolerance as a concept. This purpose leads to three key questions: 1. What role do the Scandinavian rhetoric researchers give the rhetoric in relation to politics and democracy? 2. How can we understand tolerance and its function for and within the democracy? 3. What could be an alternative role for rhetoric beyond tolerance? The essay therefore contains a survey of the Scandinavian researchers in rhetoric and their views on the role of rhetoric in politics. It also contains a problematization of tolerance extracted from the work of Wendy Brown and Slavoj Žižek. The essay concludes that rhetoric research in Scandinavia is based on the intention to create more tolerance. It also comes to the conclusion that tolerance as a political discourse works depoliticizing. The essay’s contribution to rhetorical science therefore comes in the form of another perspective providing an alternative role for rhetoric in democracy. Here it is not based on morality but on what we should call the political. That is, rhetoric may act in the intersections between the dichotomies – politics / the political, democracy / dictatorship, descriptive / normative – in order to see the various symptoms and the lack that exist in society and in the system.

Lancée par une communication du célèbre professeur Brown-Séquard en 1889 sur les effets de l’auto injection d’un suc testiculaire, l’opothérapie – technique de soin par le suc de glandes – s’inscrit dans la ligne d’une longue tradition de médication animale. Les publications de médecins et de pharmaciens nous ont permis d’établir comment cette nouvelle thérapeutique s’inscrit dans le paysage d’une médecine qui se scientifise au tournant du XIXe-XXe siècles. L’opothérapie, dont le développement est tributaire de l’évolution des connaissances sur les glandes endocrines, se développera grâce aux succès thérapeutiques enregistrés dans les affections thyroïdiennes et gynécologiques et grâce à la mise à la disposition du public de spécialités issues d’une pharmacie qui s’industrialise et qui fournit une médication sous une forme qui permet de s’affranchir d’un geste médical. L’opothérapie, qui se démarque de l’hormonothérapie par l’usage d’objets thérapeutiques naturels mal identifiés qui ont suscité de nombreux débats sur leur composition et leur mode d’action, connaitra son plus grand développement aux alentours de la Première guerre mondiale et persistera, malgré le développement de l’hormonothérapie s’appuyant sur des molécules de synthèse, jusque dans les années 1990. / Launched by a communication from the famous Professor Brown-Sequard in 1889 on the effects of self-injection of testicular juice, organotherapy – a technique of care using the juice of glands – falls within a long tradition of animal medication. Publications of doctors and pharmacists have allowed us to establish how the new treatment is part of the landscape of medicine that became more scientific at the turn of the nineteenth and twentieth centuries. Opotherapy/Organotherapy, whose development depends on the development of knowledge on the endocrine glands, develops through therapeutic successes in thyroid and gynecological diseases and by making pharmaceuticals produced by industrializing pharmacists which provided medication in a form that eliminates a medical procedure, available to the public. Organotherapy, which stands out from hormone therapy by the use of natural misidentified drugs that have generated a great number of debates on their composition and mode of action, will know its greatest development around the First World War and will persist despite the development of hormone therapy based on synthetic molecules until the 1990s.

No description available.