Relevant bibliographies by topics / Element activation / Dissertations / Theses
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Dissertations / Theses on the topic 'Element activation'

Author: Grafiati
Published: 23 June 2021
Last updated: 29 July 2025

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1

Ryde, S. J. S. "Multi element in vivo analysis by neutron activation." Thesis, Swansea University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.638733.

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The design, construction and commissioning of a unique, versatile clinical instrument for multi-element in vivo analysis by neutron activation is described. In this instrument a 4 GBq Cf-252 neutron source is stored below ground level and can be pneumatically propelled to one of two irradiation ports. From these ports collimated beams of fast neutrons, of different intensities and dose-rates, are delivered either to a localised volume such as the liver or kidneys, or across the width of a patient for head-to-toe scanning. The instrument is intended primarily for measurement of total-body calci
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2

Kolor, Katherine. "Advancement of the timing of origin activation by a cis-acting DNA element /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/10292.

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3

Fischer, Shain Ann. "A Three-Dimensional Anatomically Accurate Finite Element Model for Nerve Fiber Activation Simulation Coupling." DigitalCommons@CalPoly, 2015. https://digitalcommons.calpoly.edu/theses/1365.

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Improved knowledge of human nerve function and recruitment would enable innovation in the Biomedical Engineering field. Better understanding holds the potential for greater integration between devices and the nervous system as well as the ability to develop therapeutic devices to treat conditions affecting the nervous system. This work presents a three-dimensional volume conductor model of the human arm for coupling with code describing nerve membrane characteristics. The model utilizes an inhomogeneous medium composed of bone, muscle, skin, nerve, artery, and vein. Dielectric properties of ea
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4

Sugden, Frank Daniel. "A NOVEL DUAL MODELING METHOD FOR CHARACTERIZING HUMAN NERVE FIBER ACTIVATION." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1318.

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Presented in this work is the investigation and successful illustration of a coupled model of the human nerve fiber. SPICE netlist code was utilized to describe the electrical properties of the human nervous membrane in tandem with COMSOL Multiphysics, a finite element analysis software tool. The initial research concentrated on the utilization of the Hodgkin-Huxley electrical circuit representation of the nerve fiber membrane. Further development of the project identified the need for a linear circuit model that more closely resembled the McNeal linearization model augmented by the work of Sz
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Vallinoto, Priscila. "Determinação de elementos essenciais e tóxicos em alimentos comerciais infantis por análise por ativação com nêutrons e espectrometria de absorção atômica." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-04072013-144252/.

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A Organização Mundial da Saúde recomenda que os bebês sejam amamentados de forma exclusiva, pelo menos, seis meses após o nascimento. Após este período, recomenda-se a introdução de alimentos complementares, a fim de atender as quantidades nutricionais, minerais e energéticas necessárias às crianças. Produtos alimentares destinados a lactentes formam uma parte importante da dieta de muitos bebês, por isso é muito importante que esses alimentos contenham quantidades suficientes de minerais. Alimentação complementar inadequada é uma das principais causas das altas taxas de desnutrição nos países
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AGUIAR, AMILTON R. "Aplicacao do metodo de analise por ativacao com neutrons a determinacao de elementos traco em unhas humanas." reponame:Repositório Institucional do IPEN, 2001. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10890.

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COCCARO, DANIELA M. B. "Estudo da determinacao de elementos - tracos em liquens para monitoracao ambiental." reponame:Repositório Institucional do IPEN, 2001. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10844.

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CAVALCANTE, CASSIO Q. "Estudo sobre a determinação de paládio em amostras biológicas pelo método de análise por ativação em nêutrons." reponame:Repositório Institucional do IPEN, 2007. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11544.

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9

PIASENTIN, RICARDO M. "Acompanhamento da variacao mineral de duas cultivares de guandu (Cajanus cajan(L.)Millsp) submetidas a diferentes doses de fertilizantes, pelo metodo de analise por ativacao com neutrons." reponame:Repositório Institucional do IPEN, 2001. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10903.

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10

Vernois, Vincent. "Determination de certains microconstituants de l'email dentaire humain." Paris 5, 1993. http://www.theses.fr/1993PA05M116.

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11

Sádovská, Terézia. "Výpočtové modelování napětí a deformace lidských hlasivek při nastavování do fonačního postavení." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443762.

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This master‘s thesis deals with computational modelling of human vocal folds in phonation position using finite element method. There are described larynx anatomy, voice generation theories and overview of so far published computational models of vocal folds. Next part of the paper deals with a redesign of vocal folds and soft tissues‘ geometry, creation of finite element mesh and implementation of active stress in thyroarytenoid muscle. The problem was solved using Ansys 19.2 software. Computation of stress and deformation of soft tissues in phonation position has been made for 7 variations w
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TAKATA, MARCELO K. "Determinacao in vitro de constituintes inorganicos em tecidos osseos pelo metodo de ativacao com neutrons." reponame:Repositório Institucional do IPEN, 2003. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11133.

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13

Nishii, Kenichiro. "MICRO-SCALE FLUID DYNAMICS AND ITS EFFECT ON HEPATIC PROGENITOR CELL REGENERATION ACTIVATION." Miami University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=miami1461945701.

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14

Soto, Nathan Daniel. "Characterizing Nerve Fiber Activation By Varying Fiber Diameter And Depth Within a Conductive Medium: A Finite Element Approach." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/608.

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In some instances neuropathies can be diagnosed through a conduction velocity test. However, not all neuropathies can be classified using this method. Gaining an understanding of how the stimulus level varies for different fiber sizes at different fiber depths within a conductive medium will provide useful information for simulation studies. Following a two-step approach using COMSOL and MATLAB, a simulation was implemented to investigate the stimulus necessary to activate different sized fibers at different depths. In this two-step approach, COMSOL was used to describe the voltage profile tha
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15

AVEGLIANO, ROSEANE P. "Estudo de dieta total no estado de Sao Paulo: estimativa de ingestao dietetica de elementos toxicos (arsenico e cadmio) e essenciais (calcio, cromo, ferro, selenio, sodio, potassio e zinco)." reponame:Repositório Institucional do IPEN, 2009. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11523.

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BAPTISTA, TATYANA S. "Valores de referencia de elementos em sangue de cavalos da raca crioula via metodologia nuclear." reponame:Repositório Institucional do IPEN, 2010. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9587.

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SUSSA, FABIO V. "Estudo da composição inorgânica e avaliação da atividade biológica de Peperomia pellucida no crescimento de Aspergillus flavus." reponame:Repositório Institucional do IPEN, 2011. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10068.

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KIRA, CARMEN S. "Estudo da composicao mineral e dos elementos-traco essenciais em amostras de leite e produtos lacteos por espectrometria de emissao atomica com plasma induzido e analise por ativacao com neutrons." reponame:Repositório Institucional do IPEN, 2002. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11040.

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LARIZZATTI, FLAVIO E. "Determinacao de metais pesados e outros elementos de interesse por ativacao neutronica, em amostras de sedimentos da Laguna Mar Chiquita (Cordoba, Argentina)." reponame:Repositório Institucional do IPEN, 2001. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10972.

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Rolseth, Anton, and Anton Gustafsson. "Implementation of thermomechanical laser welding simulation : Predicting displacements of fusing A AISI304 T-JOINT." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-19946.

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Laser welding is an advanced joining technique with the capability to form deep, narrow, and precise welds. Numerical models are used to simulate the process in attempts of predicting distortions and stresses in the material. This is done to reduce physical testing, optimize processes and enable integrated product- and process development. The Virtual Manufacturing Process research group at University of Skövde wishes to increase their knowledge on modeling options of thermomechanical simulations to grant local industries these benefits. A numerical model for the laser welding process was deve
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MAIHARA, VERA A. "Avaliacao do conteudo de alguns elementos essenciais e toxicos em dietas de criancas e idosos pelo metodo de analise por ativacao de neutrons." reponame:Repositório Institucional do IPEN, 1996. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10445.

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22

Roux, Anthony. "Modélisation par la Méthode des Eléments Discrets de la Déchirure du Complexe Musculo-Tendineux." Thesis, Paris, ENSAM, 2016. http://www.theses.fr/2016ENAM0023/document.

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La déchirure musculaire est la première cause de blessure chez les athlètes. De nombreuses études décrivent ce traumatisme musculaire sans parvenir à en identifier clairement la chronologie et ses circonstances. L’objectif de la thèse est de décrire le phénomène de déchirure musculaire avec la méthode des éléments discrets, en s’appuyant sur des essais expérimentaux pour valider les modèles numériques. Dans une première partie, une revue de littérature permet d’acquérir les propriétés mécaniques des différents éléments constituant le complexe musculo-tendineux afin de pouvoir en réaliser un mo
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MONTEZANI, EDMILA. "Estudo sobre a composicao elementar nas amostras de liquem epifitico utilizado como bioindicador da poluicao aerea na cidade de Sao Paulo." reponame:Repositório Institucional do IPEN, 2010. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9620.

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Deserranno, Dimitri. "A Multi-Scale Finite Element Model of the Cardiac Ventricles." Case Western Reserve University School of Graduate Studies / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=case1148984314.

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TUDELA, DIEGO R. G. "Caracterização físico-química de sedimentos do sítio arqueológico Lapa Grande de Taquaraçu, MG." reponame:Repositório Institucional do IPEN, 2013. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10533.

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Mancinelli, Andrea. "Palladium Catalyzed C–H activation of arylethyl amines and their derivatives: application to the construction of heterocyclic compounds." Doctoral thesis, Universitat de Barcelona, 2017. http://hdl.handle.net/10803/403465.

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The development of selective methods for the direct conversion of carbon−hydrogen bonds into carbon-heteroatom and carbon−carbon bonds remains a critical challenge in organic chemistry. An interesting approach to address this issue involves the use of substrates that contain coordinating atoms (or directing groups) that bind to the metal center in a first step, and a further rearrangement allows the C−H bond activation. A variety of palladium, rhodium, ruthenium, iridium, rhenium, and copper and, to a lesser extent, manganese, nickel, iron, and cobalt metal derivatives have been shown to be eff
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Fuga, Alessandra. "Uso de líquens epifíticos no biomonitoramento da poluição atmosférica da região metropolitana de São Paulo." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-15052012-133838/.

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Devido aos crescentes problemas relacionados com a poluição atmosférica na região metropolitana de São Paulo que atingem o ambiente e a saúde das populações, toma-se de grande interesse o estabelecimento de metodologias tal como a de monitoramento da qualidade do ar usando organismos cosmopolitas. O biomonitoramento é um método experimental que permite avaliar a resposta de organismos vivos à poluição, oferecendo vantagens como custos reduzidos, eficiência no monitoramento de amplas áreas geográficas e de elementos químicos poluentes presentes em baixas concentrações no ambiente e acumulados n
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YAMASHITA, CELINA I. "Estudo sobre os constituintes inorgânicos presentes em diferentes espécies da planta medicinal do gênero Casearia coletadas em regiões distintas da Mata Atlântica, SP." reponame:Repositório Institucional do IPEN, 2006. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9298.

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SOARES, EUFEMIA P. "Caracterizacao de componentes inorganicos e tipos de polimeros em materiais plasticos metalizados." reponame:Repositório Institucional do IPEN, 2002. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11066.

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Kim, Yong-Chul. "Hemin-induced activation of the thioredoxin gene by Nrf2 : A differential regulation of the antioxidant responsive element by a switch of its binding factors." Kyoto University, 2003. http://hdl.handle.net/2433/148732.

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FUGA, ALESSANDRA. "Uso de liquens epifíticos no biomonitoramento da poluição atmosférica da região metropolitana de São Paulo." reponame:Repositório Institucional do IPEN, 2006. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11482.

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BOURLEGAT, FERNANDA M. LE. "Disponibilidade de metais em amostras de fosfogesso e fertilizantes fosfatados utilizados na agricultura." reponame:Repositório Institucional do IPEN, 2010. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9582.

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BORDES, NICOLE. "Etude du dosage d'elements traces dans inp par activation avec des particules chargees; comparaison avec d'autres methodes de caracterisation." Toulouse, INSA, 1986. http://www.theses.fr/1986ISAT0035.

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Le phosphure d'indium (inp) est un materiau semiconducteur interessant pour ses proprietes electriques dans le domaine de la microelectronique et de l'optoelectronique. Dans le but de maitriser son elaboration et de mieux comprendre ses proprietes, il est necessaire de determiner la concentration des elements traces ou des dopants presents dans le materiau. Les methodes nucleaires d'activation par particules chargees sont actuellement parmi les plus sensibles pour l'analyse d'impuretes dans les materiaux, et surtout elles sont quantitatives. Les possibilites analytiques offertes par des proton
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Stelletta, Julien. "Modélisation volumique déformable du système musculosquelettique du membre inférieur." Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10107/document.

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La modélisation du système musculo-squelettique est un outil permettant l'amélioration des connaissances du fonctionnement biomécanique des structures ostéo-articulaires et musculo- tendineuses. Nos travaux de recherche portent sur le développement d'une méthodologie de modélisation personnalisée, volumique, déformable et à capacité contractile du système musculo- squelettique du membre inférieur, intégrant l'ensemble des outils, le plus possible automatisés, de construction (basée sur l'imagerie médicale), de simulation (en couplage avec un modèle multi-corps dynamique) et d'analyse (comme la
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FRANKLIN, ROBSON L. "Determinacao de mercurio tital e organico e avaliacao dos processos de metilacao e desmetilacao em sedimentos do reservatorio Rio Grande, Estado de Sao Paulo." reponame:Repositório Institucional do IPEN, 2010. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9558.

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RIBEIRO, ROGERIO B. "Caracterização físico-química da cerâmica do sítio arqueológico São Paulo II." reponame:Repositório Institucional do IPEN, 2013. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10506.

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SEO, DANIELE. "Avaliação dos teores de Br, Cl, K, Mg, Mn e V em mexilhões Perna perna (Linnaeus, 1758: Mollusca, Bivalvia) coletados no litoral do estado de São Paulo, Brasil." reponame:Repositório Institucional do IPEN, 2012. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9939.

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FRANCISCONI, LUCILAINE S. "Determinação dos constituintes inorgânicos em plantas medicinais e seus extratos." reponame:Repositório Institucional do IPEN, 2014. http://repositorio.ipen.br:8080/xmlui/handle/123456789/23298.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2015-01-21T10:02:22Z No. of bitstreams: 0<br>Made available in DSpace on 2015-01-21T10:02:22Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado em Tecnologia Nuclear)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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Tavares, Daniel Jorge. "Sequences Required for Neurotensin Receptor-1 Gene Expression in N1E-115 Neurosblastoma Cells: Critical Importance of a CACCC Element for Activation During DMSO-Induced Neuronal Differentiation: a Dissertation." eScholarship@UMMS, 2000. https://escholarship.umassmed.edu/gsbs_diss/40.

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The promoter sequence of the mouse high affinity neurotensin receptor, Ntr-1, gene was cloned and characterized, sequences required for positive regulation in N1E-115 cells were localized, and at least two different peptides from these cells were shown to make specific contacts within the most potent positive regulatory element. A mouse neuroblastoma cell line, N1E-115, treated with 1.5% DMSO for 72 hours induces gene expression of both endogenous Ntr-l, and reporter constructs driven by the NTR-1 promoter, by 3 - 4 fold. The sequence ofthe NTR-1 promoter has no canonical TATA box, but is GC r
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SUSSA, FABIO V. "Efeito do manejo agrícola, da sazonalidade e dos elementos traço na produção dos óleos voláteis de erva-cidreira (Melissa officinalis L.)." reponame:Repositório Institucional do IPEN, 2017. http://repositorio.ipen.br:8080/xmlui/handle/123456789/28047.

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Submitted by Pedro Silva Filho (pfsilva@ipen.br) on 2017-11-23T10:48:05Z No. of bitstreams: 0<br>Made available in DSpace on 2017-11-23T10:48:05Z (GMT). No. of bitstreams: 0<br>Este trabalho é um estudo interdisciplinar envolvendo o cultivo de erva-cidreira (Melissa officinalis L.) e sua caracterização química. O objetivo deste estudo foi fornecer informação sobre a adubação orgânica e convencional, a sazonalidade e os efeitos dos elementos traço na produção dos óleos voláteis de Melissa officinalis. O modelo experimental utilizado foi em canteiros com delineamento inteiramente casualizados (
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RUBY, ELAINE C. "Qualidade ambiental de solos agricolas da bacia do Rio Jaguari - Sao Paulo." reponame:Repositório Institucional do IPEN, 2009. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9484.

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RIBEIRO, ANDREZA P. "Determinacao de metais pesados e outros elementos de interesse em sedimentos lacustres da Estacao de Tratamento de Esgoto de Barueri, Sao Paulo, por ativacao neutronica." reponame:Repositório Institucional do IPEN, 2002. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11026.

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FARIAS, LUCIANA A. "Avaliação do conteúdo de mercúrio, metilmercúrio e outros elementos de interesse em peixes e em amostras de cabelos e dietas de pré-escolares da região Amazônica." reponame:Repositório Institucional do IPEN, 2006. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11472.

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Galdino, Luciano. "CALFRAC: Programa que quantifica o processo de cristalização fracionada e sua aplicação ao estudo de soleiras da Bacia do Paraná (Estado do Paraná)." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/14/14132/tde-03012011-135433/.

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Foi desenvolvido um programa computacional escrito na linguagem de programação C++ denominado CALFRAC para quantificar o processo de cristalização fracionada em sistemas ígneos, utilizando para isso as concentrações dos elementos maiores, menores e traços. O algoritmo moderniza, torna mais eficiente e aprimora os programas publicados na literatura e possui a grande vantagem de poder calcular, automaticamente, todas as possíveis combinações de evolução das amostras envolvidas na diferenciação, além de associar aos cálculos os elementos-traço, os quais servem para confirmar os resultados sugerid
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ROCHA, ROSIANA R. "Avaliação da poluição atmosférica de elementos químicos pela análise de líquen epifítico no campus da Cidade Universitária de São Paulo." reponame:Repositório Institucional do IPEN, 2015. http://repositorio.ipen.br:8080/xmlui/handle/123456789/25356.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2015-12-22T09:22:37Z No. of bitstreams: 0<br>Made available in DSpace on 2015-12-22T09:22:37Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado em Tecnologia Nuclear)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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Pareek, Manish [Verfasser], Martin [Akademischer Betreuer] Oestreich, Martin [Gutachter] Oestreich, and Philipp [Gutachter] Heretsch. "Activation of boron–boron, tin–silicon, and tin–tin bonds : application in carbon–element (E = B and Sn) bond-forming reactions and site-selective Suzuki–Miyaura cross-coupling reactions / Manish Pareek ; Gutachter: Martin Oestreich, Philipp Heretsch ; Betreuer: Martin Oestreich." Berlin : Technische Universität Berlin, 2017. http://d-nb.info/1156016843/34.

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47

Daniele, Anna Paula. "Determinação de elementos essenciais em vinhos por Análise por Ativação com Nêutrons." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-16022017-111238/.

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Muitos estudos têm sido realizados para determinar elementos essenciais nos alimentos, dentre eles o vinho, devido aos seus importantes papéis nutricionais em funções do corpo humano. Estudos apontam que o consumo diário e moderado de vinho contribui de forma significativa para as necessidades dos elementos essenciais para o corpo humano, tais como Ca, Co, Cr, Fe, K, Mg, Mn, Zn, V, entre outros, bem como traz benefícios para a saúde como a prevenção de inúmeras doenças e maior expectativa de vida, relacionados em particular com a ingestão de antioxidantes como os compostos polifenólicos. Por o
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Larue, Alyssa. "Analysis of elemental concentrations of biologically important elements in caprine milk and commercial caprine milk replacers using instrumental neutron activation analysis." Connect to resource, 2008. http://hdl.handle.net/1811/32108.

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Reis, Rogério Alves de Sousa. ""Caracterização de componentes inorgânicos em suplementos nutricionais pelo método de análise por ativação com Nêutrons"." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-01062007-161704/.

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O controle da composição dos elementos presentes nos suplementos nutricionais é de grande importância devido ao crescente consumo e a comercialização de diversos tipos e marcas destes produtos. A determinação da quantidade de elementos nos suplementos torna – se necessária para comparar com os valores declarados nos seus rótulos. Neste trabalho, a ativação com nêutrons foi aplicada à análise de 11 amostras de suplementos, adquiridos em farmácias e em lojas de produtos naturais. As amostras, adquiridas nas formas de cápsulas ou comprimidos foram moídas para se obter as na forma de pó homogêneo.
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Alamin, Mohamed Bachir. "Bulk material elemental analysis using neutron activation techniques." Thesis, University of Surrey, 1995. http://epubs.surrey.ac.uk/843813/.

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The principles of Instrumental Neutron Activation Analysis (INAA) techniques and their applications in bulk analysis making use of prompt and delay gamma-rays have been outlined. Bulk analysis has the advantage of reducing sample preparation, and the use of large volume samples ensures that the analyses are representative of the bulk. A full description of the irradiation facility with the changes in terms of better shielding, and the use of a microcomputer in cycling the neutron source and the acquisition system control which is employed for simultaneous prompt and cyclic NAA has been given.
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