Um experimento foi realizado para avaliar o efeito da suplementação dietética de fontes orgânicas de micro minerais na produção e qualidade interna e externa de galinhas poedeiras. Foram utilizados 8 tratamentos: um tratamento com todos os minerais na forma inorgânica, um tratamento com todos os minerais na forma orgânica e mais 6 tratamentos com apenas um dos minerais na forma orgânica. Os minerais testados foram: zinco, manganês, iodo, selênio, cobre e ferro. As dietas experimentais foram à base de milho e farelo de soja, foram utilizadas 672 aves da linhagem babcock B 300, o período de experimentação foi de 48 a 60 semanas de idade. Foram avaliados os seguintes parâmetros de produção: Consumo de ração, Produção de ovos, Peso de Ovos, Massa de ovos, Conversão Alimentar. Também foram avaliados parâmetros que qualidade do ovo: Gravidade específica, unidade Haugh, porcentagem de casca. Os dados foram analisado em ciclo de postura de 28 dias. Os resultados para a primeira análise de qualidade dos ovos demonstraram uma piora na unidade haugh para o tratamento contendo ferro orgânico (p<0,05) e uma piora na porcentagem de casca para os tratamentos com o zinco e com o cobre orgânico (p<0,05), quando comparado com o tratamento totalmente inorgânico. Para as demais análises não foram observadas diferenças estatísticas. Os resultados para a produção de ovos não foram diferentes para os três períodos, com exceção da massa de ovos que foi menor para o tratamento com o ferro orgânico para o terceiro ciclo de postura (p<0,05). Os resultados do experimento sugerem que a suplementação com minerais orgânicos não alteram a qualidade e a produção de ovos de galinha entre 48 e 60 semanas de idade, quando comparado com a suplementação inorgânica dos mesmos. / A experiment was conducted to study the effect of organic trace mineral sources supplementation on egg production and quality for laying hens. It were used 8 treatments: one treatment with every trace minerals on inorganic form, one treatment with all minerals on organic form and 6 treatments where only one mineral were organic. The trace minerals were: zinc, manganese, iodine, selenium, copper and iron. Corn and soybean meal diets were used. 672 babcock B300 laying hens with 48 week were used. The production parameters analyzed were: Feed intake, egg production, egg weight, egg mass and feed conversion. The parameters of egg quality analyzed were: specific gravity, haugh unit and eggshell percent. Data were summarized for 3 periods of 28 days and analyzed by SAS. The results for first analyzes of egg quality showed a decrease in Haugh unit for the treatment with organic iron (p<0,05) and a decrease on eggshell percent for the chelates zinc and copper (p<0,05), when this results were compared with the inorganic mineral supplementation. For the other parameters weren’t showed statistic differences. The results for egg production weren’t different for the tree periods, except for egg mass that was decrease to organic iron treatment in the last period (p<0,05). The experiment results suggest that the supplementation with organic minerals didn’t improve the egg production and quality for laying between 48 – 60 weeks of age, when its were compared with inorganic mineral supplementation.

Thesis (MTech (Physical Sciences))--Peninsula Technikon, Cape Town, 1999. / Wet deposition of toxic trace metals is the dominant mode of deposition in terrestrial ecosystems and contributes very significantly to their pollution burden. Wet deposited metals are dissolved in rainwater. They reach the vegatation in a form most favourable for uptake. Reliable analysis of toxic trace metals in rainwater is important in order to determine the impact they make on the environment. In this study, trace metals in rainwater and in dry deposition (as a control measure), have been analysed over a period of a year. These metals include cadmium, copper, cobalt, lead, nickel and zinc. The rainwater was filtered, acidified to pH2 and irradiated with UV-light. Dry deposition samples, were digested by heating in nitric acid before analysis. Differential-pulse anodic stripping voltammetry was used to determine cadmium, lead and zinc. Copper was determined by adsorptive cathodic stripping at pH7 after complexation with catechol. Cobalt and nickel were measured at pH9 by adsorptive cathodic stripping after formation of their dimethylglyoximes. Sampling was done on a daily basis from April 1996 to March 1997, on the campus of the Peninsula Technikon. The samples were collected over a 24-hour period. The total average concentration for the metals was 16.11 flg/dm3 for rainwater and 427flg/dm3 for dry deposition. Meteorological factors such as wind speed, humidity and temperature affect the distribution of pollutants and thus the trace metal levels. The levels of the metallic pollutants were thus evaluated against meteorological data. Differential-pulse stripping voltammetry is shown to be applicable for heavy metal analysis of rainwater.

Os contaminantes lançados no ambiente decorrente das atividades humanas podem se movimentar de um compartimento ambiental para o outro e assim chegar nos corpos hídricos, onde se associam rapidamente ao material particulado e incorporam-se aos sedimentos. Desta forma, a relação água com o sedimento faz deste compartimento um dos principais alvos de preocupação e análise, dada sua importância na ciclagem de matéria e na biodisponibilidade de diversos compostos químicos para o ambiente aquático. O objetivo deste trabalho foi avaliar o comportamento geoquímico dos elementos Al, Fe, Cr, Cu, Zn, Mn, e P em sedimento superficial do reservatório Guarapiranga por meio da técnica de extração sequencial constituída de quatro etapas, seguido pela detecção em espectrometria de emissão ótica com plasma acoplado indutivamente (ICP-OES). Foram coletadas amostras de sedimento superficial em 14 (quatorze) estações estrategicamente escolhidas, de modo a conhecer a heterogeneidade do sistema e determinar a mobilidade de elementos-traço persistentes e sua distribuição espacial no compartimento sedimentar da represa. As amostras passaram por processo de secagem e foi separada a fração silte/argila. A extração sequencial foi realizada em quatro etapas, a fração 1 ácido solúvel ligada a carbonatos, a fração 2 redutível a óxidos de ferro e manganês, a fração 3 oxidável ligada a matéria orgânica e a fração 4 residual. Todo o processo foi feito em triplicata e as concentrações dos elementos foram determinadas no ICP-OES. Com base nos resultados obtidos da extração sequencial, foi possível avaliar a distribuição dos elementos nas quatro frações geoquímicas distintas bem como o fator de mobilidade individual e total desses elementos no reservatório. A soma das três primeiras frações compõe a fração considerada biodisponível enquanto que a diferença do total extraído representou a fração residual. A partir dos resultados obtidos infere-se que o reservatório do Guarapiranga apresenta dois compartimentos distintos, um mais degradado que vai do ponto GU-05 ao GU-14 que sofre os impactos da ocupação do seu entorno e um mais preservado que vai do ponto GU-01 a GU-04, com pouca influência de ocupação urbana no seu entorno. O grau de mobilidade global segue uma tendência de montante à jusante do reservatório, próxima a barragem. / The contaminants produced by human activities released in the environment may move from one environmental compartment to another and reach the water bodies, where they rapidly associate to particulate matter and are incorporated to the sediments. Thus, the relationship between water and sediment makes this compartment on of the main targets for concern and analysis, given its importance in cycling matter and in bioavailability of various chemical compounds to the water environment. The objective of this work was to study the geochemical behaviour of the elements Al, Fe, Cr, Cu, Zn, Mn and P in the surface sediments of the Guarapiranga reservoir (23°47\'S and 46°32\"W) by means of the sequential extraction technic consisting of four stages, followed by the detection in inductively coupled plasma optical emission spectroscopy (ICP-OES). Samples were collected from the superficial sediment in 14 (fourteen) stations strategically chosen, this way being able to know the heterogeneity of the system and to determinate the mobility of persistent trace elements and their spatial distribution in the sedimentary compartment of the reservoir. The samples were subjected to a drying process and then separating the silt fraction. The sequential extraction was made in four steps, fraction 1 acid soluble linked to carbonates, fraction 2 reducible to iron and manganese oxides, fraction 3 oxidable linked to organic matter and fraction 4 residual. All the process was done in triplicate and the concentration of the elements was determined by ICP-OES. Based on the results obtained by the sequential extraction, it was possible to evaluate the distribution of the elements in the four distinct geochemical fractions, as well as the individual mobility factor of those elements in the reservoir. The sum of the first three fractions composes the fraction considered bioavailable, while the difference from the total extracted represented the residual fraction. Parting from the results obtained it is inferred that the Guarapiranga reservoir has two distinct compartments, one more degraded that goes from point GU-05 to GU-14 that suffers from the impacts of the occupations in the surroundings and one more preserved that goes from point GU-01 to GU-04, with little influence from urban occupation in the surroundings. The degree of global mobility follows the tendency of up and down stream in the reservoir, next to the barrage.

by Wong Chi Kin. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1994. / Includes bibliographical references (leaves 131-133). / Acknowledgement / Abstract --- p.1 / General introduction --- p.4 / Part I Determination of Some Minor Elements in Cement by Energy Dispersive X-Ray Fluorescence Spectrometry / Introduction --- p.7 / Experimental --- p.14 / Results and discussions --- p.18 / Part II Determination of Mercury in Water by Static Cold Vapour Atomic Absorption Spectrometry / Introduction --- p.78 / Experimental --- p.84 / Results and discussions --- p.89 / Conclusion --- p.130 / References --- p.131

by Leung Ho-yin. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1998. / Includes bibliographical references. / Abstract also in Chinese. / Acknowledgement --- p.i / Abstract --- p.ii / Table of Contents --- p.iv / List of Tables and Figures --- p.v / Chapter Chapter 1 --- Introduction --- p.1 / Chapter Chapter 2 --- Methodology --- p.12 / Chapter Chapter 3 --- Experimental --- p.17 / Chapter 3.1 --- Sample Collection --- p.17 / Chapter 3.2 --- Preliminary Sample Treatment --- p.18 / Chapter 3.3 --- Dissolution Test Apparatus --- p.18 / Chapter 3.4 --- Reagents --- p.20 / Chapter 3.5 --- ICP Experimental Conditions --- p.21 / Chapter Chapter 4 --- Determination of Total Contents in Chinese Mineral Drugs --- p.28 / Chapter 4.1 --- Procedure --- p.28 / Chapter 4.2 --- Results --- p.39 / Chapter Chapter 5 --- Determination of the Effective Contents --- p.51 / Chapter 5.1 --- General Procedure --- p.51 / Chapter 5.2 --- Results --- p.52 / Chapter Chapter 6 --- Recovery Test for Dissolution --- p.77 / Chapter 6.1 --- General Procedure --- p.77 / Chapter 6.2 --- Results --- p.78 / Chapter Chapter 7 --- Discussion --- p.80 / Chapter 7.1 --- The Presence of Toxic Elements in many CMD --- p.80 / Chapter 7.2 --- Mass of Samples Added in the Dissolution --- p.80 / Chapter 7.3 --- Height of the Dissolution Paddle of the Dissolution --- p.81 / Chapter 7.4 --- Particle Sizes of the Sample in the Dissolution --- p.83 / Chapter 7.5 --- The Total and the Effective Contents --- p.83 / Chapter 7.6 --- Discussion for each CMD --- p.84 / Chapter 7.7 --- Conclusion --- p.103 / Appendix English 一 Chinese table of CMD --- p.108

Digitized by Kansas Correctional Industries

Thesis. 1978. Ph.D. cn--Massachusetts Institute of Technology. Dept. of Chemistry. / Includes bibliographical references. / Ph.D.cn

In this thesis, we prove that local genericity implies globally genericity for the quasi-split unitary group U3 for a quadratic extension of number fields E/F. We follow [Fli1992] and [GJR2001] closely, using the relative trace formula approach. Our main result is the existence of smooth transfer for the relative trace formulae in [GJR2001], which is circumvented there. The basic idea is to compute the Mellin transform of Shalika germ functions and show that they are equal in the unitary case and the general linear case.

We provide a new relative trace formula approach to the theorem of Waldspurger on toric periods for GL₂, with possible applications to the global Gross-Prasad conjecture for orthogonal groups.

CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior / Este trabalho busca refletir sobre o carÃter autobiogrÃfico do projeto In dreams, de autoria do artista Belga Luis Alvarez.O projeto à composto por fotografias preto e branco, feitas ao longo de duas dÃcadas de registros cotidianos e banais, que posteriormente foram organizadas numa espÃcie de linha do tempo. Nesse processo, o artista pÃe suas memÃrias em movimento, construindo uma narrativa labirÃntica e fragmentada. Nossa intenÃÃo aqui à investigar um certo traÃo biogrÃfico (De Man, 2012; Arfuch, 2010) presente ali, bem como pensar de que forma o sujeito por trÃs do aparelho inscreve-se nas imagens que produz (Foucault, 2004). Nosso pressuposto à de que Alvarez habita essas imagens nÃo por meio do seu rosto refletido sobre a superfÃcie fotogrÃfica, mas como uma espÃcie de presenÃa marcada na ausÃncia. Atravessamos In dreams como quem coleta pistas, como quem abre portas, como quem monta um retrato composto de rastros e vestÃgios. à a partir de Benjamin (2001) que guiamos nosso olhar em relaÃÃo a um passado que nÃo à nosso, mas que ascende diante de nÃs como constelaÃÃo, por meio dos seus detritos. Com tal objetivo, refletimos sobre o lugar, ou melhor, o nÃo-lugar de onde parte essa obra, dialogando com o pensamento contemporÃneo que entende imagem nÃo como campo limitado ao visual, mas como paisagem composta por atravessamentos e dissonÃncias (Agamben, 2009; RanciÃre, 2012). à nesse espaÃo de fronteira que Didi-Huberman (2010) nos ajuda a compreender que postura à essa em que nosso olhar se deixa afetar pelo que vÃ, em que a linha que separa pesquisador e objeto à tÃo tÃnue quanto a que separa o sonho da realidade. Na busca por esse sujeito autobiogrÃfico, investigamos essas imagens como corpos em movimento, atentando para a pluralidade de olhares e de leituras possÃveis. AlÃm disso, buscamos dar devida atenÃÃo aos aspectos ligados à montagem e à materialidade dessas imagens, nÃo apenas como processo de construÃÃo de In dreams, mas como meio de produÃÃo de pensamento. / This dissertation aims to reflect on the autobiographical character of In Dreams project, created by the Belgian artist Luis Alvarez. The project consists of black and white photographs, made over two decades of banal and everyday records, which were later organized in a type of timeline. In this process, the artist sets your memories in motion, building a mazy and fragmented narrative. Our intention is to investigate a certain biographical trace present there (De Man, 2012; Arfuch, 2010). And think about how the subject behind the apparatus inscribe himself in the images he produces (Foucault, 2004). Our hypothesis is that Alvarez inhabits these images not through his face reflected on the photographic surface, but as a kind of presence marked in absence. We crossed In dreams as if collecting clues, as if we opened doors, as if we put together a portrait through tracks and traces. Starting from Benjamin (2001) we guide our gaze towards a past that is not ours, but rises before us as constellation, through its debris.To that end, we reflect about the place, or rather the non-place where this work parts from, investigating contemporary thought which understands image not as limited to the visual field, but as a landscape made of crossings and dissonances (Agamben, 2009; RanciÃre, 2012). It is in this border space that Didi-Huberman (2010) helps us to understand what posture is that which our gaze lets itself be affected by what we see, where the line between researcher and subject is so thin as to what separates dream from reality. In the search for this autobiographical subject, we investigated these images as bodies in motion, noticing the plurality of views and possible readings. However, we seek to give due attention to aspects of assembly and materiality of these images, not only as In dreams construction process, but as media produces thought.