Дисертації з теми "ENERGY MATRICES"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся з топ-50 дисертацій для дослідження на тему "ENERGY MATRICES".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Переглядайте дисертації для різних дисциплін та оформлюйте правильно вашу бібліографію.
Hisada, Kenji. "Triplet Energy Transfer and Migration in Polymer Matrices." Kyoto University, 1998. http://hdl.handle.net/2433/157030.
Повний текст джерелаKyoto University (京都大学)
0048
新制・課程博士
博士(工学)
甲第7329号
工博第1704号
新制||工||1104(附属図書館)
UT51-98-G258
京都大学大学院工学研究科高分子化学専攻
(主査)教授 山本 雅英, 教授 山岡 仁史, 教授 増田 俊夫
学位規則第4条第1項該当
Fanfarillo, Michael. "Activation of carbon dioxide and dioxygen in low-energy matrices." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236314.
Повний текст джерелаCosta, Emerson Chagas. "Estudo de fluxo de potencia com aplicação de metodos diretos na resolução de sistemas de equações lineares." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/306749.
Повний текст джерелаDissertação (mestrado profissional) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Computação Cientifica
Made available in DSpace on 2018-08-10T18:21:37Z (GMT). No. of bitstreams: 1 Costa_EmersonChagas_M.pdf: 3002139 bytes, checksum: 1caa6878e65459343f93aa39d2841fa3 (MD5) Previous issue date: 2008
Resumo: Diante de um sistema elétrico de potência brasileiro, complexo e gigantesco, o presente trabalho trata do estudo de fluxo de potência, por meio de simulação com os sistemas de 30 e 118 barras da IEEE (Institute of Electrical and Electronics Engineers) com os métodos desacoplados e utilizando os métodos diretos de decomposições de matrizes...Observação: O resumo, na íntegra, poderá ser visualizado no texto completo da tese digital
Abstract: Considering a large-scale and complex Brazil electric power system, the present work concerns the study of power flows, through simulations with the 30 and 118 bus system of the IEEE (Institute of Electrical and Electronics Engineers) applying the uncoupled methods and the direct methods of matrix decomposition...Note: The complete abstract is available with the full electronic digital thesis or dissertations
Mestrado
Sistemas de Energia Eletrica
Mestre em Matemática Aplicada
Dolz, Zaragozá Manuel Francisco. "Energy-aware matrix computacion on multirhreaded architectures." Doctoral thesis, Universitat Jaume I, 2014. http://hdl.handle.net/10803/669082.
Повний текст джерелаAgirtopcu, Yasin. "Investigations On The Permeability Of Acrylic Powder Structures." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/4/1045343/index.pdf.
Повний текст джерелаStepanian, S. G., A. Yu Ivanov, and L. Adamowicz. "Effect of low-temperature argon matrices on the IR spectra and structure of flexible N-acetylglycine molecules." AMER INST PHYSICS, 2016. http://hdl.handle.net/10150/622884.
Повний текст джерелаCougoulic, Florian. "Nuclear effects in high-energy proton-nucleus collisions : transverse momentum broadening of energetic parton systems and soft anomalous dimension matrices." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2018. http://www.theses.fr/2018IMTA0086/document.
Повний текст джерелаIn the Standard Model of particle physics,the theory of the strong interaction, Quantum Chromodynamics (QCD), is a gauge theory of symmetry group SU (Nc) with respect to the color quantum number. QCD obeys the property of asymptotic freedom, allowing the computation of high-energy physical observables using perturbative QCD (pQCD). This thesis deals with the pQCD description of hadron production rates in high-energy hadronic collisions, in view of applications to the phenomenology of proton-nucleus and nucleus-nucleus collisions at hadron colliders (RHIC,LHC), where so-called nuclear effects (shadowing, parton energy loss, transverse momentum broadening) come into play. In a first part, I study the transverse broadening of an energetic parton system crossing a nucleus, putting emphasis on the color structure of the process. A theoretical setup based on the dipole formalism is used,and a kinetic equation is derived for the parton pair transverse momentum distribution, requiring the parton pair to be in a given color state (SU (Nc) irreducible representation) both in the initial and final state. The color structure is encoded in a color evolution operator, which is obtained for any type of parton pair. For a small-size compact pair, the derivation yields a transparent physical interpretation of the pair transverse broadening process. In a second part, I discuss the soft anomalous dimension matrix Q, which is formally analogous to the previous evolution operator, and which appears when studying soft gluon radiation associated to 2 −> 2 hard parton scattering. It has been noticed that the Q-matrix associated to gg −> gg has a surprising symmetry (relating external and internal degrees of freedom). I developed tools to derive the Q-matrices associated to2 −> 2 scatterings involving generalized partons, in order to explore if the symmetry observed for gg −> gg is fortuitous or not
Molloy, James. "Argon and argon-chlorine plasma reactive ion etching and surface modification of transparent conductive tin oxide thin films for high resolution flat panel display electrode matrices." Thesis, University of Ulster, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243741.
Повний текст джерелаBryjko, Lilianna. "SA-CASSCF and R-matrix calculations of low-energy electron collisions with DNA bases and phosphoric acid." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/2608.
Повний текст джерелаAlam, Ahmad Mahbubul. "Energy efficiency-spectral efficiency tradeoff in interference-limited wireless networks." Thesis, Rennes, INSA, 2017. http://www.theses.fr/2017ISAR0028/document.
Повний текст джерелаOne of the used strategies to increase the spectral efficiency (SE) of cellular network is to reuse the frequency bandwidth over relatively small areas. The major issue in this case is higher interference, decreasing the energy efficiency (EE). In addition to the higher bandwidth, densification of the networks (e.g. small cells or multi-user multiple input single output, MU-MISO) potentially increases the area spectral efficiency (ASE). The total energy consumption of the wireless networks increases due to the large amount of circuit power consumed by the dense network structures, leading to the decrease of EE. In this thesis, the EE-SE achievable region is characterized in a hexagonal cellular network considering several frequency reuse factors (FRF), as well as shadowing. The EE-ASE region is also studied using Poisson point processes (PPP) to model the MU-MISO network with signal-to-leakage-and-noise ratio (SLNR) precoder. Different base station (BS) densities and different number of BS antennas with static power consumption are considered.The EE-SE region in a hexagonal cellular network for different FRF, both with and without shadowing is first characterized. When shadowing is considered in addition to the path loss, the ε-SE-EE tradeoff is proposed as an outage measure for performance evaluation. The EE-SE curves have a large linear part, due to the static power consumption, followed by a sharp decreasing EE, since the network is homogeneous and interference-limited. The results show that FRF of 1 for regions close to BS and higher FRF for regions closer to the cell edge improve the EE-SE optimal point. Moreover, better EE-SE tradeoff can be achieved with higher outage values. Besides, FRF of 1 is the best choice for very high outage value due to the significant signal-to-interference-plus-noise ratio (SINR) decrease.In downlink, precoders are used in space division multiple access (SDMA) MU-MISO cellular networks to improve the SINR. Stochastic geometry has been intensively used to analyse such a complex system. A closed-form expression for ASE in asymptotic regime, i.e. number of antennas and number of users grow to infinity, has been derived using random matrix theory and stochastic geometry. BSs and users are modeled by two independent PPP and SLNR precoder is used at BS. EE is then derived from a linear power consumption model. Monte Carlo simulations show that the analytical expressions are tight even for moderate number of antennas and users. Moreover, the EE-ASE curves have a large linear part before a sharply decreasing EE, as observed for hexagonal network. The results also show that SLNR outperforms the zero-foring (ZF) precoder, which is typically used in literature. Numerical results for SLNR show that deploying more BS or a large number of BS antennas increase ASE, but the gain depends on the BS-user density ratio and on the number of antennas when user density is fixed. EE increases only when the increase in ASE dominates the increase of the power consumption per unit area. On the other hand, when the user density increases, ASE in interference-limited region can be improved by deploying more BS without sacrificing EE and the ergodic rate of the users
Janča, David. "Rezonanční přenos energie v prostředí hydrogelové matrice." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-316158.
Повний текст джерелаHenriet, Simon. "On solving the non intrusive load monitoring problem in large buildings : analyses, simulations and factorization based unsupervised learning." Electronic Thesis or Diss., Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAT007.
Повний текст джерелаWith the increasing awareness about the problem of climate change and the high level of energy consumption, a need for energy efficiency has emerged especially for electric power consumptions in buildings. To spur energy savings, industrials have been looking for measurement methods to monitor power consumptions. Appliance load monitoring has thus become an active research field. Monitoring and understanding the electrical consumption of appliances can also be useful for predictive maintenance, power quality analyses, demand forecasting or occupancy detection. Thirty years ago, a method called Non Intrusive Load Monitoring (NILM) has been introduced. It consists of estimating individual appliance energy consumptions from the measurement of the total consumption of the building. Its main advantage over traditional sub-metering methods is to use a single electric power meter at the main breaker of the building and then use a disaggregation algorithm to separate the contributions of each appliance. The goal of this thesis is to address the algorithmic challenge offered by NILM. The NILM problem can be formulated as a source separation problem, where the sources are the individual electric consumptions and the mixed observation is simply the sum of individual consumptions. Its main difficulties are: (i) the standardization of the formulation, (ii) the ill-posedness of the problem, (iii) the lack of knowledge and (iv) the machine learning algorithm design. All our contributions follow from the principal objective that is to solve the NILM problem for huge systems such as commercial or industrial buildings using high frequency current and voltage measurements. However, houses and the specific equipment found inside these buildings are not excluded of the study. This thesis is split into two parts.In the first part, we tackle the lack of knowledge and datasets for NILM in commercial buildings. First of all, the NILM community has mostly focused on both residential NILM application and using low frequency data provided by power meter installed by utility providers. To tackle the lack of knowledge on higher frequency data and on other kind of buildings such as commercial or industrial installations, we propose a statistical analysis based on public and private datasets. Our study on the rank of current matrix conducted for individual devices will serve as the base of a new device taxonomy and to prior assumptions on the rest of this thesis. Secondly, we address the lack of datasets especially for commercial buildings by developping an algorithm for generating synthetic current data based on a modelization of the current flowing through an electrical device. To encourage research on commercial buildings we release a synthesized dataset called SHED that can be used to evaluate NILM algorithms.In the second part, we deal with the NILM software challenges by exploring unsupervised source separation techniques. To overcome the unaddressed difficulties of processing high frequency current signals that are measured in large buildings, we propose a novel technique called Independent-Variation Matrix Factorization (IVMF), which expresses an observation matrix as the product of two matrices: the "signature" and the "activation". Motivated by the nature of the current signals, it uses a regularization term on the temporal variations of the activation matrix and a positivity constraint, and the columns of the signature matrix are constrained to lie in a specific set. To solve the resulting optimization problem, we rely on an alternating minimization strategy involving dual optimization and quasi-Newton algorithms. IVMF is the first proposed algorithm especially designed for high frequency NILM in huge buildings. We finally show that IVMF outperforms competing methods (Independent Component Analysis, Semi Non-negative Matrix Factorization) on NILM datasets
Ayed, Othman. "Etude des interactions entre atomes alcalins (li, na, k) et monoxyde de carbone en matrices de gaz rares : analyse en spectroscopie vibrationnelle et calcul quantiques de quelques complexes." Paris 6, 1987. http://www.theses.fr/1987PA066117.
Повний текст джерелаRostichelli, Luiz Gustavo Nascimento. "Valorização e associação das matrizes nutricionais da enzima fitase e emulsificante para frangos de corte /." Ilha Solteira, 2018. http://hdl.handle.net/11449/183135.
Повний текст джерелаResumo: Um experimento foi realizado na UNESP – Faculdade de Engenharia – Campus de Ilha Solteira Setor de Avicultura, tendo como objetivo avaliar a matriz nutricional, preconizada pela literatura, da enzima fitase e da goma de soja, isoladas e associadas em dietas para frangos de corte nas fases inicial, crescimento e final, avaliando características de desempenho zootécnico ( consumo de ração, ganho de peso e conversão alimentar) nas fases de 7 a 21, 22 a 35, 36 a 42 e na fase total de 7 a 42 dias de idade, sendo estes dados utilizados para a análise econômica. Foram utilizadas 700 aves da linhagem Coob® (lote sexado – machos), as aves foram distribuídas em um delineamento inteiramente casualizado, contendo 7 tratamentos e 5 repetições de 20 aves. Os dados foram submetidos à análise de variância e quando apresentaram diferenças significativas as médias foram comparadas pelo teste SNK 5% de probabilidade, utilizando o programa estatístico SISVAR 5.1 (2001). A valorização individual da matriz nutricional da enzima fitase e da goma de soja, na formulação de ração para frango de corte é uma alternativa para reduzir custos de produção sem afetar o desempenho zootécnico, entretanto ao associar essas matrizes o efeito acumulativo não ocorre.
Abstract: An experiment was carried out at UNESP - Faculty of Engineering - Campus de Ilha Solteira Poultry Sector, with the objective of evaluating the nutritional matrix, recommended by the literature, of phytase enzyme and soybean gum, isolated and associated in diets for broiler chickens. (feed intake, weight gain and feed conversion) in stages 7 to 21, 22 to 35, 36 to 42 and in the total phase of 7 to 42 days of age , and these data are used for economic analysis. A total of 700 birds of the Coob lineage were used (batch sexed - males), the birds were distributed in a completely randomized design, containing 7 treatments and 5 replicates of 20 birds. The data were submitted to analysis of variance and when significant differences were found the mean values were compared by the SNK 5% probability test, using the statistical program SISVAR 5.1 (2001). The individual valorization of the nutritional matrix of the enzyme phytase and soybean gum in the formulation of ration for broiler chickens is an alternative to reduce production costs without affecting the zootechnical performance, however when associating these matrices the cumulative effect does not occur.
Mestre
Luiz, José Eduardo Monteiro de Sá. "Estudo das propriedades espectroscópicas de matrizes de Urânio dopadas com Európio.Tranferência de energia entre o UO22+ e o EU3+." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/85/85134/tde-15052012-154536/.
Повний текст джерелаUranyl compounds (UO22+) present a great potential as luminescent materials, for instance, applied in technology laser, luminescent probes, cells for conversion of energy, etc. In this work it is studied the efficiency of energy transfer in the compound Eu3+ doped in UO2(MS)2(H2O)n matrix and UO22+ in Eu(MS)3 (H2O)n for to be used as efficient Light Conversion Molecular Devices (LCMD) and/or in solar cells for energy conversion. It is also described the synthesis, characterization and spectroscopic study of the matrix Eu(MS)3 (H2O)n.(x%mol) UO22+ and UO2(MS)2.(H2O)n.(x%mol) Eu3+ (where x= 1, 3, 5 and 10). The compounds obtained was characterized by elementar analyses for determine the U6+ concentration, infrared spectra, thermal analyses and luminescence spectra. The IR data suggest that the MS ligand acts as bidentate one. The emission spectra of Eu3+ doped in UO2(MS)2.(H2O)2 matrix showed characteristic fluorescence bands of the uranyl ion, attributed to the transition 3∏u → 1∑g+ of the uranium matrix. For the UO22+ in Eu(MS)3(H2O)6 the transitions of 5Do → 7FJ (J= 0→4) are predominant in the spectra. The intense europium luminescence associated with uranyl sensitising is registered in emission spectra of Eu3+ ions in the range of 420-720 nm. The quenching rate constant of UO22+ fluorescence with Eu3+ is also determined.
Palorini, F. "Etudes sur la matrice de mélange leptonique et sur la matière noire." Phd thesis, Université Claude Bernard - Lyon I, 2008. http://tel.archives-ouvertes.fr/tel-00413522.
Повний текст джерелаZUBAIR, USMAN. "High-energy sustainable Lithium sulfur batteries for electrical vehicles and renewable energy applications ¿ Development of innovative electrodes." Doctoral thesis, Politecnico di Torino, 2019. http://hdl.handle.net/11583/2730619.
Повний текст джерелаLUIZ, JOSE E. M. de S. "Estudo das propriedades espectroscópicas de matrizes de uranio dopadas com európio. Transferência de energia entre o UOsub(2)sup(2+) e o Eu sup(3+)." reponame:Repositório Institucional do IPEN, 2007. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11595.
Повний текст джерелаMade available in DSpace on 2014-10-09T13:58:43Z (GMT). No. of bitstreams: 0
Dissertação (Mestrado)
IPEN/D
Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP
Dičpinigaitis, Petras. "Delninukų energijos suvartojimo apdorojant išretintas matricas saugomas stulpeliais modeliavimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20080128_103036-96655.
Повний текст джерелаNowadays major problem is energy consumtion in portable devices which has a battery. In this job we have evaluated energy consumption for Pocket PC. We wanted to see memory and processor influence in battery energy consumption. We have created a program which can do matrix multiplication and sparse matrix „storage by columns“ multiplication. During multiplication program takes battery information and saves it into the file. After that I have investigated the result and saw, that sparse matrix storage by columns multiplication is much more effectived than normal matrix multiplication. Sparce matrix storage by columns multiplication take less memory and more processor commands then normal matrix multiplication. We suggest to use sparse matrix storage by columns model instead simple model, because you can save much more operation time, battery resources and memory.
Roos, Lydia. "Aspects de la violation de la symétrie CP dans BABAR. Contraintes sur la matrice CKM." Habilitation à diriger des recherches, Université Pierre et Marie Curie - Paris VI, 2004. http://tel.archives-ouvertes.fr/tel-00552217.
Повний текст джерелаZhang, Chuan. "Aluminum foams composite : elaboration and thermal properties for energy storage." Thesis, Troyes, 2017. http://www.theses.fr/2017TROY0015/document.
Повний текст джерелаThe objective of this thesis is to study and optimize the manufacturing process of metal foams and the thermal behavior of the aluminum foam/phase change material (PCM) composite by experimental and numerical methods. The manufacturing process of open-cell aluminum foam is developed and optimized to precisely control the parameters of mufacturing. Two pore-scale models of high porosity aluminum foams (HPAF)/PCM composite and low porosity aluminum foams (LPAF)/PCM composite are established for numerical simulation. By simulating the melting process of a layer energy storage system, the HPAF/PCM and LPAFS/PCM composite are compared numerically in order to evaluate the energy storage performance. The results show that aluminum foam improves greatly the heat transfer process in PCM due to its high thermal conductivity. The porosity of aluminum foams could not only influence the melting process of composite but also the energy storage performance. Thanks to the collaboration with EPF, a new manufacturing method of periodic open-cell aluminum foams is developed based on 3D rapid tooling. The thermal behavior of the periodic open-cell aluminum foams/PCM composite is experimentally and numerically analyzed
Sousa, Sília Maria de Negreiros. "Relação entre energia e proteína digestíveis para matrizes de tilápia do Nilo (Oreochromis niloticus)." Universidade Estadual do Oeste do Paraná, 2012. http://tede.unioeste.br:8080/tede/handle/tede/1651.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
The goal of this study was to evaluate the effects of different levels of digestible protein (DP) and energy (DE) over growth, breeding performance and offspring quality in females of Nile tilapia (Oreochromis niloticus). Nine food formulae were evaluated using a combination of three DP levels (28, 34 and 40%) and three DE levels (2,800, 3,400 and 4,000 kcal.kg-1) in three repetitions. Fish were kept in net cages along a naturally carved tank. Temperature was measured daily while pH and dissolved oxygen values were taken weekly. The breeding management was carried out in 260 days (September 2010 to April 2010) using a sex ratio of 3 females: 1 male with ten days of resting and four days of mating. Mean weight, standard length, weight gain, condition factor, specific growth rate, feed conversion and survival rate were evaluated in females each 14 days. As for breeding performance, the analyzed parameters were: mean egg weight, egg diameter, absolute fecundity, relative fecundity and mean larval weight at hatching. For that, eggs were collected from oral cavity after mating for subsequent artificial incubation. In January 2011, offspring samples were collected and raised up to 30 days of age to evaluate growth parameters during sex reversal stage. A broodstock sample was dissected to measure visceral-somatic, hepatosomatic and gonadosomatic indexes. Water quality remained adequate to maintain this fish species, but temperature was lower than that recommended for broodstock. The tested food formulae influenced female growth (p<0.05) throughout the experimental period, as well as the visceral-somatic index in the selected month (p<0.05). In relation to reproductive features, the treatments had no effects on egg production (p>0.05). Nonetheless, energy levels affected relative fecundity (p<0.05) and protein levels influenced both egg and larval weight (p<0.05). No differences in the growth of offspring derived from broodstock fed on distinct formulae were detected (p>0.05). Thus, food formulae containing 28% of DP and 2,800 kcal of DE.kg of food -1 are indicated to Nile tilapia once they assure a higher egg production per gram of female without affecting offspring performance
O trabalho visou analisar o efeito entre os diferentes níveis de proteína (PD) e energia digestíveis (ED) sobre o crescimento, desempenho reprodutivo e qualidade da prole de fêmeas de tilápia do Nilo (Oreochromis niloticus). Foram avaliadas nove rações a partir da combinação entre três níveis de PD (28, 34 e 40%) e três níveis de ED (2.800, 3.400 e 4.000 kcal.kg ração-1) com três repetições. Os peixes foram acomodados em tanques-rede distribuídos em tanque escavado sob condições naturais. Diariamente verificou a temperatura e semanalmente o pH e oxigênio dissolvido. Os animais foram submetidos a um manejo reprodutivo com dez dias de descanso e quatro dias de acasalamento, com 3 fêmeas para 1 macho durante 260 dias (setembro de 2010 a abril de 2011). As fêmeas foram avaliadas, a cada 14 dias, quanto ao peso médio, comprimento padrão, ganho de peso, fator de condição, taxa de crescimento específico, conversão alimentar e sobrevivência. Quanto ao desempenho reprodutivo, verificaram-se os parâmetros de peso médio dos ovos, diâmetro dos ovos, fecundidade absoluta, fecundidade relativa e peso médio das larvas no momento da eclosão. Para isso, após o período de acasalamento, foi realizada coleta de ovos da cavidade bucal que foram submetidos a incubação artificial. No mês de janeiro de 2011, amostras da prole foram coletadas e mantidas em sistema de criação até os 30 dias, e verificados os parâmetros de crescimento durante a fase de reversão sexual. Uma amostra de matrizes foi dissecada para mensuração dos índices víscerossomático, hepatossomático e gonadossomático. A qualidade da água permaneceu dentro dos níveis ideais para a espécie, porém a temperatura manteve-se abaixo do recomendado para reprodutores. As rações testadas mostraram influência no crescimento das fêmeas (p<0,05) ao longo do período experimental, assim como para o índice viscerossomático no mês de coleta (p<0,05). Para os aspectos reprodutivos, as matrizes não apresentaram maior produção de ovos de acordo com os tratamentos (p>0,05). Porém, sofreram efeito dos níveis energéticos para fecundidade relativa (p<0,05) e dos níveis protéicos para peso dos ovos e das larvas no momento da eclosão (p<0,05). As proles provenientes dos reprodutores alimentados com as diferentes rações, não evidenciaram diferença no seu crescimento (p>0,05). Rações contendo 28% de PD e 2.800 kcal de ED.kg de ração-1 são indicadas para tilápia do Nilo para garantir maior produção de ovos por grama de fêmeas sem afetar o desempenho da prole
Saavedra, Mendez Osvaldo Ronald. "Calculo de fluxo de carga desacoplado : modelo de matrizes constantes baseado na filosofia de acoplamento implicito." [s.n.], 1988. http://repositorio.unicamp.br/jspui/handle/REPOSIP/261913.
Повний текст джерелаDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica
Made available in DSpace on 2018-07-17T00:38:18Z (GMT). No. of bitstreams: 1 SaavedraMendez_OsvaldoRonald_M.pdf: 4844745 bytes, checksum: e42380649584cd41800f56197bf883fd (MD5) Previous issue date: 1988
Resumo: Neste trabalho apresenta-se um estudo sobre a metodologia CRIC (Constrained Reactive Implicit Coupling) aplicada ao problema de cálculo de fluxo de carga quando o acoplamento entre os sub-problemas ativo e reativo não é desprezível. Realiza-se uma discussão geral dos Métodos desacoplados envolvendo os fatores que influem. nos seus desempenhos. É proposto um novo método de matrizes constantes denominado aqui "CRIC Constante", de robustez e simplicidade semelhante ao método desacoplado rápido, mas que apresenta melhor desempenho nos casos de razões R/X elevadas e em geral em situações de acoplamento ativo-reativo não desprezível. são relatados testes em vários sistemas, tanto de distribuição como de transmissão, nos quais confirma-se a superioridade do método CRIC Constante sobre o método desacoplado rápido.É apresentada também uma análise teórica que procura justificar o comportamento empírico dos métodos desacoplados
Abstract: Not informed.
Mestrado
Mestre em Engenharia Elétrica
Ocariz, Jose. "Des Kaons aux mésons B : Contraindre le Modèle Standard par la physique des saveurs." Habilitation à diriger des recherches, Université Paris-Diderot - Paris VII, 2007. http://tel.archives-ouvertes.fr/tel-00386983.
Повний текст джерелаLe chapitre suivant évoque la violation de CP dans le secteur des kaons : sont traitées les contraintes sur la matrice CKM provenant des mesures de εK, ε′/ε, ainsi que l'´état des lieux et les perspectives sur la recherche des modes rares K+→π+νν et
KL→π0νν ; ce chapitre conclut par une étude prospective pour estimer le potentiel de
physique des kaons dans le cadre du modèle CKM.
Suivent deux chapitres décrivant des analyses de physique dans l'expérience BaBar : est d'abord présentée en détail l'analyse en amplitudes du mode B0 → K+π−π0 ; suit un état des lieux plus succint sur l'analyse en amplitudes dépendantes du temps du mode
B0 → K0π+π−, qui a déj`a fourni des résultats préliminaires à l'été 2007. La discussion est ensuite complétée par une description qualitative sur un projet d'étude combinée des contraintes sur la matrice CKM provenant des modes B → Kππ.
Pérez, Pérez Luis Alejandro. "Time-Dependent Amplitude Analysis of B^0->Kspi+pi- decays with the BaBar Experiment and constraints on the CKM matrix using the B->K*pi and B->rho K modes." Phd thesis, Université Paris-Diderot - Paris VII, 2008. http://tel.archives-ouvertes.fr/tel-00379188.
Повний текст джерелаCampos, Jose Carlos da Costa. "Matrizes de transformação reais aplicadas as linhas de transmissão de circuito duplo." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260914.
Повний текст джерелаTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação
Made available in DSpace on 2018-08-14T11:17:10Z (GMT). No. of bitstreams: 1 Campos_JoseCarlosdaCosta_D.pdf: 4388913 bytes, checksum: c565c846bae4e32b03dcef712a2494df (MD5) Previous issue date: 2009
Resumo: As matrizes de transformação reais e constantes são aplicadas como matrizes de transformação fase-modo características de um sistema simétrico com circuito trifásico duplo transposto e de duas linhas de transmissão paralelas transpostas com circuito trifásico duplo. Essas matrizes de transformação reais e constantes são baseadas na matriz de Clarke. Usando a combinação linear dos elementos da matriz de Clarke, as técnicas aplicadas para linhas trifásicas simples são ampliadas para sistemas com 6 e 12 condutores de fase. Para uma linha trifásica dupla transposta, as matrizes Z e Y são convertidas em matrizes diagonais no domínio dos modos. Considerando um caso não transposto de uma linha trifásica dupla, os resultados não são exatos e as análises de erros são realizadas mediante os autovalores. No caso de duas linhas trifásicas paralelas duplas e transpostas, a matriz de transformação exata com elementos reais e constantes não foi obtida ainda. Para esse caso, como sugestão para desenvolvimento futuro, a determinação da matriz de transformação modal real e constante provavelmente deverá ser baseada em uma única referência homopolar. Tal sugestão se deve ao fato de que, neste trabalho, a estrutura das matrizes de transformação utilizadas tem como base a aplicação do modo homopolar como única referência homopolar para todos condutores de fase do sistema estudado.
Abstract: Single real transformation matrices are applied as phase-mode transformation matrices of typical symmetrical systems with double three-phase and two parallel double three-phase transmission lines. These single real transformation matrices are achieved from eigenvector matrices of the mentioned systems and they are based on Clarke's matrix. Using linear combinations of the Clarke's matrix elements, the techniques applied to the single three-phase lines are extended to systems with 6 or 12 phase conductors. For transposed double three-phase lines, phase Z and Y matrices are changed into diagonal matrices in mode domain. Considering non-transposed cases of double three-phase lines, the results are not exact and the error analyses are performed using the eigenvalues. In case of two parallel double three-phase lines, the exact single real transformation matrix has not been obtained yet. Probably, for two parallel double three-phase lines, considering future development and searching for the exact single real transformation matrix, the analyses are based on a single homopolar reference. This suggestion is related to that in the all analyses carried out in this work, the homopolar mode is used as the only homopolar reference for all phase conductors of the studied system.
Doutorado
Energia Eletrica
Doutor em Engenharia Elétrica
Junior, Theotonio Mendes Pauliquevis. "Auto Calibração e Determinação de Matrizes de Covariância em Medidas de Energia em Espectroscopia Gama." Universidade de São Paulo, 2000. http://www.teses.usp.br/teses/disponiveis/43/43131/tde-21122011-141852/.
Повний текст джерелаWe measured 21 gamma-ray energies from 57Co, 60Co, 133Ba, 137Cs and 192Ir decay, with a 75 cm3 HPGe detector. The data analysis was performed usin a self calibration procedure, based on the Least Square Method, where experimental and input data are included in a single step. As result of this statistical procedure, 309 other gamma-ray energies not measured, but covariant with the measured ones, as well the covariance matrix were updated. Some transitions got a variance reduction over than 80% when compared with the bibliography, and of 50% when compared with the reanalyzed data that consider all the covariance matrix.
Silva, Junior Irênio de Jesus. "Avaliação do desempenho de diferentes matrizes de sensibilidade na modelagem do equivalente Ward estendido." [s.n.], 2002. http://repositorio.unicamp.br/jspui/handle/REPOSIP/261608.
Повний текст джерелаDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação
Made available in DSpace on 2018-08-02T19:21:46Z (GMT). No. of bitstreams: 1 SilvaJunior_IreniodeJesus_M.pdf: 2733716 bytes, checksum: 9d1c01391caafa4a9074c944e462f395 (MD5) Previous issue date: 2002
Resumo: Sendo um dos modelos de equivalentes externos mais utilizados atualmente por centros de controle de sistemas de energia elétrica, o modelo Ward Estendido representa uma potente ferramenta em estudos de planejamento da expansão e operação das redes elétricas. Visando melhorar a precisão dos resultados obtidos com as redes reduzidas, este trabalho apresenta estudos e testes comparativos realizados para se avaliar o desempenho das matrizes de sensibilidade Lcric, Leq, B" e L na obtenção do equivalente Ward Estendido para redes radiais e malhadas, mostrando que tal equivalente torna-se mais preciso quando formado com a matriz Lcric'
Abstract: The Extended Ward Equivalent forms the basis oí the external system modeling in several computational programs for power system expansion planning and operation studies at a number of utility control centers. This work presents a comparative study aiming to investigate the performance of the sensitivity matrices, Lcric, Leq, B" and L, to obtain the Extended Ward model for radial and meshed systems, showing that the Extended Ward model becomes more accurated when it is formed with the Lcric sensitivity matrix
Mestrado
Energia Eletrica
Mestre em Engenharia Elétrica
Zhu, Feng. "Experimental and numerical study of metal foam composites in innovative application of thermal energy storage." Thesis, Troyes, 2017. http://www.theses.fr/2017TROY0009/document.
Повний текст джерелаThe objective of this Ph.D. thesis is to study the thermal behavior of the aluminum foam and phase change material (PCM) composite by both experimental and numerical methods in order to know the phenomena of storage of thermal energy in these materials. The manufacturing process of open-cell aluminum foam is firstly analyzed numerically to reduce the manufacturing defects in the samples. The heat transfer characteristics of PCM embedded in aluminum foams with different porosities are then investigated by analyzing the melting processes and the temperature variations in the composites. Two numerical models for low and high porosity aluminum foam are established to evaluate the energy storage performance of the composites. The results show that the aluminum foam can greatly improve the heat transfer performance in PCM due to its high thermal conductivity. The energy storage performance depends strongly on the porosity of the aluminum foam/PCM composite. An optimized porosity highlights this performance and improves the thermal behavior. The last part of this thesis proposes an improved structure of aluminum foam with respect to the uniform structure: Association of the metal fin and the foam with graded porosity. This new structure possesses a better energy storage performance especially in the case of the isothermal heat source
Yousef, Yaser. "Routage pour la gestion de l'énergie dans les réseaux de capteurs sans fil." Phd thesis, Université de Haute Alsace - Mulhouse, 2010. http://tel.archives-ouvertes.fr/tel-00590407.
Повний текст джерелаSantos, Junior Bartolomeu Ferreira dos. "Aplicação das matrizes de rede em problemas de alocação de custos, perdas e fluxos no sistema de energia elétrica." reponame:Repositório Institucional da UFSC, 2012. http://repositorio.ufsc.br/xmlui/handle/123456789/100398.
Повний текст джерелаMade available in DSpace on 2013-06-25T18:48:12Z (GMT). No. of bitstreams: 1 313872.pdf: 2507163 bytes, checksum: 848ce6a13f76b37680dc475485078972 (MD5)
Com as significativas mudanças advindas do processo de formação do mercado de energia elétrica, as empresas do setor têm encontrado desafios que exigem uma maior atenção dentro deste novo contexto econômico, tal como o problema da alocação de montantes do sistema de transmissão, dentre os quais destacam-se a alocação de perdas e do custo pelo uso da rede. Devido à natureza não linear do sistema de potência, este problema é não separável e com um elevado grau de complexidade. Assim, a atribuição de responsabilidades no problema de alocação, é dificultada pelo requisito da identificação das parcelas a partir de um problema não separável. Isto invariavelmente inclui um grau de arbitrariedade no processo de alocação, de maneira que devem ser estabelecidas hipóteses consistentes, que reflitam os interesses dos participantes do mercado. No presente trabalho, propõe-se a aplicação das matrizes de rede aos problemas de alocação dos montantes resultantes da operação do sistema de energia elétrica, tais como o custo, as perdas, a demanda e os fluxos de potência complexa presentes nas linhas de transmissão. São propostas formulações distintas para a alocação e controle de fluxos de potência complexa nas linhas de transmissão, modelagens baseadas nas equações de circuito para alocação da demanda complexa, além da generalização dos métodos baseados em Matrizes de Rede. Isto permite aos usuários do sistema estabelecer certas hipóteses relativas à divisão das parcelas totais do custo e das perdas, de forma a manter sob controle o grau de arbitrariedade incluído no critério de alocação.
Abstract : Due to the significant changes resulting from the establishment of the electric energy market, the utilities have found many challenges that require considerable attention in this new economical context, as the problem of allocating amounts related to the system transmission, among which there are the losses and the cost for using the transmission network. Due to non-linear nature of the power system, this problem is non-separable and has a high degree of complexity. Thus, the difficulty to compute the parcels in the allocation problem is increased by the non-separability feature. This invariably includes a degree of arbitrariness in the allocation process, which requires consistent assumptions that reflect the interests of the market participants. In this work, we propose the application of network matrices to network allocation problems of the amounts related to the operation of the electric power system, such as cost, losses, demand and power flows in the transmission lines. Alternative formulations are proposed for allocation and control of the complex power flows in transmission lines, manipulation of circuit equations for allocating complex power demand, in addition to generalization of methods based on Network Matrices. This allows the users to establish certain assumptions about the division of amounts of total cost and losses in order to keep under control the degree of arbitrariness which is included in the criteria of allocation.
Hu, Xusheng. "Study of the Thermal Performance of Metal Foam and PCM Composite for Thermal Energy Storage." Thesis, Troyes, 2021. http://www.theses.fr/2021TROY0003.
Повний текст джерелаThe aim of this Ph.D. thesis is to study the thermal performance of metal foam and phase change material (PCM) composite by using the experimental and numerical methods, in which metal foam possesses a cubic cell structure and is fabricated by 3D printing technique. Firstly, the effects of contact and heat conditions on heat storage rate of PCM composite are investigated to provide theoretical guidance for the practical application of PCM composite in thermal energy storage (TES) system. Then the metal foam with a cubic cell structure is designed and fabricated by 3D printing. The experimental investigation is carried out to examine the melting evolution of PCM embedded in metal foam. Meanwhile, the pore-scale numerical method is also proposed and used to investigate heat transfer characteristics of PCM composite. It is found from the results that the embedding metal foam can short the total melting time of PCM. Considering the influence of morphology parameters of metal foam, the thermal behavior of metal foam with different porosities and pore densities is numerically studied. The last part of this thesis explores the application of metal foam in PCM based heat sink. The thermal response of heat sinks using PCM composite is obtained by the experimental test, including base temperature, temperature variation, operating time and enhancement ratio of operating time. Also, the effects of the porosity of metal foam and the power level of the heater on the thermal response of heat sink are investigated
Lüders, Christian [Verfasser], Adolf [Gutachter] Zschunke, Michael W. [Gutachter] Linscheid, and W. [Gutachter] Engewald. "Entwicklung von Analyseverfahren und Referenzmaterialien für die Bestimmung von Phenolen in umweltrelevanten Matrices / Christian Lüders ; Gutachter: Adolf Zschunke, Michael W. Linscheid, W. Engewald." Berlin : Humboldt-Universität zu Berlin, 1999. http://d-nb.info/1207668419/34.
Повний текст джерелаPaes, Neilor de Carvalho. "Cidade & energia : matrizes energéticas parciais das cidades de Bordeaux, Cincinnati e Curitiba através de método técnico-contábil." reponame:Repositório Institucional da UFPR, 2014. http://hdl.handle.net/1884/37316.
Повний текст джерелаDissertação (mestrado) - Universidade Federal do Paraná, Setor de Tecnologia, Programa de Pós-Graduação em Engenharia de Construção Civil. Defesa: Curitiba, 16/04/2014
Inclui referências
Area de concentração : Ambiente construído e gestão
Resumo: Com a importância que o consumo energético vem ocupando na atualidade surgem ferramentas para sua melhor apreciação e mensuração. Nesse âmbito, o objetivo deste trabalho é apresentar matrizes energéticas parciais das cidades de Bordeaux, Cincinnati e Curitiba, através da parceria existente dentro do programa Ignis Mutat Res (iniciativa do Governo da França para estudar a mobilidade e a energia nas três cidades). A partir de levantamento de dados de consumo de energia de áreas que envolvam toda a conurbação de cada uma das cidades, realizado junto às fontes oficiais, foi aplicado método técnico-contábil para se chegar às matrizes dos núcleos urbanos. Foram realizadas inferências a partir de matrizes já consolidadas, que compreendam inteiramente determinada metrópole, para, através de indicadores de população urbana e valor adicionado fiscal, chegar-se a matrizes energéticas de cada uma das cidades. Trata-se de uma pesquisa descritiva que busca trazer nova luz sobre a questão energética nas conurbações. Por fim, foram comparados os resultados obtidos aos já apresentados em outros estudos com o objetivo de melhor compreender a relação das características urbanas com o consumo de energia. Os resultados apresentaram concordância com o que outros estudos sobre o tema vêm sugerindo, no entanto, este trabalho conseguiu indicar caminhos para a melhor utilização de inferência técnica-contábil para a obtenção de matrizes energéticas em escalas urbanas. Palavras-chave: Matriz energética, consumo de energia, conurbação, Bordeaux, Cincinnati, Curitiba.
Abstract: As energy consumption becomes nowadays a more and more importance issue, there is the need for best tools for assessment and measurement. In this context, the aim of this master thesis is to present partial energy outlooks of the cities of Bordeaux, Cincinnati and Curitiba, through the existing partnership within the program Ignis Mutat Res (an initiative of the French government to study mobility and energy in these three cities). From data collection of energy consumption of areas involving the entire conurbation of each cities, which were held next to official sources, a technical accounting method was applied to obtain energy outlooks of urban cores. Inferences were made from matrices already consolidated, ones which fully contain certain metropolis, for, through indicators of urban population and economic value added, reach energy outlook for each city. This is a descriptive study that seeks to shed new light on the energy issue in conurbations. Finally, results obtained were compared to those already presented in other studies in order to better understand the relationship of urban characteristics with energy consumption. Results showed concordance with others studies on the theme have been indicating, nevertheless, this work could pointed out ways for a better utilization of technical accounting inference for energy matrix achievement in urban scales. Keywords: Energy outlook, energy consumption, conurbation, Bordeaux, Cincinnati, Curitiba.
Haffner, Sergio Luis. "Programação linear aplicada a sistemas de energia eletrica : um estudo sobre as matrizes de sensibilidade para o problema reativo." [s.n.], 1990. http://repositorio.unicamp.br/jspui/handle/REPOSIP/261318.
Повний текст джерелаDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica
Made available in DSpace on 2018-07-13T21:51:42Z (GMT). No. of bitstreams: 1 Haffner_SergioLuis_M.pdf: 5766705 bytes, checksum: 2dd38aac5201f1b2d0e610b725549c54 (MD5) Previous issue date: 1990
Resumo: Neste trabalho, a partir de um problema geral denominado fluxo de carga ótimo, formula-se o problema de planejamento de reativos em um sistema de energia elétrica. Apresenta-se um algoritmo, baseado na técnica da programação linear sucessiva, que permite determinar a localização e a capacidade dos componentes reativos necessários para a operação e a expansão do sistema de forma ótima. Utiliza-se, em cada problema linear, uma especialização do algoritmo Dual-Simplex que opera com uma função objetivo linear por partes. Para o modelo incremental linear, são apresentadas quatro matrizes de sensibilidade esparsas, oriundas de diferentes aproximações. Efetuam-se testes para verificar o funcionamento do método bem como comparar o desempenho das diversas matrizes de sensibilidade
Mestrado
Mestre em Engenharia Elétrica
Vodička, Vít. "Interlaminární lomová houževnatost vláknových kompozitních materiálů s polymerní matricí." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231461.
Повний текст джерелаKowal, Sebastian [Verfasser], Torsten Claus [Akademischer Betreuer] Schmidt, and Wolfgang [Akademischer Betreuer] Schrader. "Determination of polar pesticide metabolites in aqueous matrices by LC-MS and investigation of occurring matrix effects / Sebastian Kowal. Gutachter: Wolfgang Schrader. Betreuer: Torsten Claus Schmidt." Duisburg, 2013. http://d-nb.info/1037916441/34.
Повний текст джерелаPruvot, Stéphane. "Mesure de l'angle gamma de la matrice CKM à l'aide des désintégrations B- en D0K*- en utilisant le détecteur BABAR à SLAC." Phd thesis, Université Paris Sud - Paris XI, 2007. http://tel.archives-ouvertes.fr/tel-00185121.
Повний текст джерелаFERNANDES, Antonio Carlos da Silva. "O projeto pedag?gico como ferramenta do processo ensino-aprendizagem." Universidade Federal Rural do Rio de Janeiro, 2013. https://tede.ufrrj.br/jspui/handle/jspui/2507.
Повний текст джерелаMade available in DSpace on 2018-10-31T19:32:46Z (GMT). No. of bitstreams: 1 2013 - Antonio Carlos da Silva Fernandes.pdf: 2151644 bytes, checksum: 3bba0818f7c6f358b676175bdfbc0df6 (MD5) Previous issue date: 2013-04-14
This research aims to analyze the importance of the implementation of educational projects as a way of enabling the teaching-learning process and also complementing the educational books. To this end, a pedagogical project on a photovoltaic panel executed, with the help of the teacher, by the students of Instituto Federal de Roraima ? IFRR is taken as the object of analysis. In a general sense, this work analyses the various solar panels which are being used most currently in the world, more specifically it analyzes the pedagogical project on the photovoltaic panel produced by the students. Throughout the development of the pedagogical project the students could learn various skills, know laws, theories and concepts, enabling learning with practice executing a range of theories studied in the books. It also approaches the perception that the students had about teaching through educational projects. The research concludes by showing that the students had an excellent impression of the use of pedagogical projects as a mechanism for enabling the teaching-learning process.
Esta pesquisa tem por objetivo analisar a import?ncia da aplica??o de projetos pedag?gicos como forma de viabiliza??o do processo ensino-aprendizagem. Para tal, toma como objeto de an?lise um projeto pedag?gico sobre uma matriz fotovoltaica executado, com aux?lio do professor, pelos alunos do Instituto Federal de Roraima-IFRR. No sentido geral, analisa as diversas matrizes energ?ticas mais recorrentes na atualidade no mundo contempor?neo, no sentido espec?fico analisa o projeto pedag?gico sobre a matriz fotovoltaica produzida pelos alunos. A partir do desenvolvimento do projeto pedag?gico, os alunos puderam aprender v?rias habilidades, conhecer leis, teorias e conceitos, possibilitando o aprender fazendo. Aborda ainda a percep??o que os alunos tiveram sobre o ensino atrav?s de projetos pedag?gicos. A pesquisa conclui mostrando que os alunos tiveram uma excelente impress?o da utiliza??o de projetos pedag?gicos como mecanismos de viabiliza??o do processo ensino-aprendizagem.
Badré, Sophie. "Étude de dérivés de Bodipy à l'état solide et en matrice polymère : vers la réalisation de nanocapteurs." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2007. http://tel.archives-ouvertes.fr/tel-00199576.
Повний текст джерелаLatour, E. "Mesure de l'angle gamma du triangle d'unitarité de la matrice CKM dans les désintégrations B-> D*K auprès de l'expérience BaBar." Phd thesis, Ecole Polytechnique X, 2007. http://tel.archives-ouvertes.fr/tel-00201496.
Повний текст джерелаPivk, Muriel. "Etude de la violation de CP dans la désintégration B0 -> h+ h- (h = pi, K) auprès du détecteur BaBar à SLAC." Phd thesis, Université Paris-Diderot - Paris VII, 2003. http://tel.archives-ouvertes.fr/tel-00002991.
Повний текст джерелаKai, Jiang. "Desenvolvimento de sistemas luminescentes à base dos polímeros PHB e PMMA dopados com complexos de terras raras." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/46/46134/tde-10122009-111916/.
Повний текст джерелаThis work presents the preparation, characterization and studies of photoluminescence properties based on trivalent rare earth coordination complexes of βdiketonates and salicylates (β-diketonates = acac- and tta-; salicylates = Hsal- and RE3+ = Sm3+, Eu3+, Gd3+ and Tb3+) doped into polymers PHB (poly3hydroxybutyrate) and PMMA (polymethylmethacrylate). The polymer systems were characterized using techniques of CHN microanalysis, complexometric titration with EDTA, infrared absorption spectroscopy, thermogravimetric analysis TGA/DTG and Xray powder diffraction. Data from the IR spectroscopy revealed the occurrence of interaction between the PHB and PMMA polymer matrix with the RE3+ complex of βdiketonates and salicylates. The thermogravimetric analysis TGA/DTG suggested anhydrous character in most doped polymer systems and showed a decrease of thermal stability with increasing doping content. The Xray diffraction study showed that the polymer films are semicrystalline and each series presents spectral profiles similar to each other. The crystallinity of the polymeric systems increased according to the doping percentage and, at the same time, maintained independent to the alteration of RE3+ ion or the coordinated ligand. It was observed in the excitation spectra of PHB and PMMA polymer systems doped with RE3+-complexes luminescence quenching of narrow bands arising from the 4f4f transitions of RE3+ ions. In the emission spectra of PHB and PMMA systems doped with Sm3+, Eu3+ and Tb3+ complexes, characteristic emission bands arising from intraconfigurational transitions were observed from the ions Sm3+ (4G5/2→6H5/2,-11/2), Eu3+ (5D0→7FJ, J = 0-6) and Tb3+ (5D4→7FJ, J = 6-0), exhibiting orangered, red and green colour emission, respectively. Most of the doped films displayed concentration quenching of luminescence. Photoluminescence properties were investigated based on the spectroscopic data obtained for systems of PHB and PMMA doped with hydrated complexes. Particularly, emission bands arising from the 5D0→7F0-4 transitions (Eu3+) were dominated by the hypersensitive 5D07F2 transition (~612 nm), indicating that the Eu3+ ion is found in a noncentrosymmetric chemical environment. PHB:Eu(tta)3 and PMMA:Eu(tta)3 films showed high Ω2 values, suggesting that the Eu3+ ion is located in a more polarizable chemical environment. The highest values of emission quantum efficiency (η) of the 5D0 emitting level were found with those polymer films doped with [Eu(tta)3(H2O)2] complex. The emission colours of polymer systems synthesized in this work enabled their potential applications in fullcolour displays, since their emissions are the primary colours: red (Eu3+), blue (Gd3+) and green (Tb3+). The PMMA:Gd(Hsal)3 films exhibits intense blue colour emission arising from the T1→S0 transition of the salicylate ligand at room temperature (298 K). The polymer matrix performs an essential role in the luminescent sensitization processes for systems containing Sm3+, Eu3+, Gd3+ and Tb3+, hence the overall systems act as Light Conversion Molecular Devices (LCMDs)
LAPLACE, Sandrine. "Mesure des rapports d'embranchement et recherche de la violation de CP dans les modes B0->rho pi, rho K." Phd thesis, Université Paris-Diderot - Paris VII, 2003. http://tel.archives-ouvertes.fr/tel-00003224.
Повний текст джерелаVincent, P. "Mesure des rapports d'embranchement semi-leptoniques et de la contribution baryonique dans les desintegrations du quark b." Phd thesis, Université Claude Bernard - Lyon I, 1994. http://tel.archives-ouvertes.fr/in2p3-00002740.
Повний текст джерелаAugier, C. "Expérience NEMO 3 - Avantages et limitationsProspective pour la physique double bêta." Habilitation à diriger des recherches, Université Paris Sud - Paris XI, 2005. http://tel.archives-ouvertes.fr/tel-00011894.
Повний текст джерелаJe détaille ensuite dans le chapitre 3 les choix effectués pour la conception et la réalisation du détecteur NEMO 3, consacré aux études des processus de double désintaégration bêta. Les performances complètes du détecteur sont aussi rappelées, tant en terme d'identification des fonds, que pour l'ensemble des processus bêta bêta, ainsi que les moyens utilisés par la collaboration pour réduire d'un facteur dix le bruit de fond dû à la présence de radon dans le détecteur, le rendant ainsi négligeable. Ce chapitre, correspondant au "Technical Report" de l'expérience NEMO 3, est écrit en anglais et forme un ensemble complet destiné aux collaborateurs de l'expérience NEMO.
Je termine ce mémoire avec le chapitre 4, par une prospective à dix ans sur les futurs projets expérimentaux en physique de la double désintégration bêta, en insistant d'une part sur le projet SuperNEMO et le programme de R&D à réaliser en France au cours des trois prochaines années, et d'autre part sur la comparaison avec les expériences qui me semblent les plus prometteuses, comme GERDA ou CUORE, avec notamment l'étude de l'effet ds éléments de matrice nucléaires sur la mesure de la masse effective du neutrino.
Stark, Jan. "Reconstruction des désintégrations des mésons B en vue de la détermination de leurs durées de vie et de la mise en évidence de la violation de CP dans l'expérience BABAR à SLAC." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2002. http://tel.archives-ouvertes.fr/tel-00009792.
Повний текст джерелаSantos, Elenir Souza. "Determinação de cobre, ferro, níquel e zinco em matrizes tanólicas por espectrometria de fluorescência de raios-x com energia dispersiva após pré-concentração em papel cromatográfico." reponame:Repositório Institucional da UFBA, 2012. http://www.repositorio.ufba.br/ri/handle/ri/11658.
Повний текст джерелаSubmitted by Ana Hilda Fonseca (anahilda@ufba.br) on 2013-03-22T17:20:17Z No. of bitstreams: 1 Tese corrigida final.pdf: 1322795 bytes, checksum: a277616fb5634d49040e3b569eae8dd2 (MD5)
Approved for entry into archive by Ana Hilda Fonseca(anahilda@ufba.br) on 2013-06-05T17:38:45Z (GMT) No. of bitstreams: 1 Tese corrigida final.pdf: 1322795 bytes, checksum: a277616fb5634d49040e3b569eae8dd2 (MD5)
Made available in DSpace on 2013-06-05T17:38:45Z (GMT). No. of bitstreams: 1 Tese corrigida final.pdf: 1322795 bytes, checksum: a277616fb5634d49040e3b569eae8dd2 (MD5) Previous issue date: 2012
CAPES
No presente trabalho, desenvolveu-se um método alternativo para determinação de cobre, ferro, níquel e zinco, usando a espectrometria de fluorescência de raios-X com energia dispersiva (EDXRF), em amostras de etanol combustível e cachaça, após procedimento de pré-concentração. O procedimento consistiu na retenção dos analitos em papel cromatográfico de troca iônica, suporte sólido que se mostrou apropriado para medições diretas por EDXRF. Algumas variáveis foram otimizadas e os melhores resultados obtidos foram: vazão de amostragem de 2,0 mL min-1, pH entre 5,0 e 7,5 e volume de amostragem de 10 mL. No procedimento, com auxílio de uma bomba peristáltica, alíquotas da solução padrão ou amostra foram passadas em papel cromatográfico de troca catiônica, que foi cortado em círculos com 13 mm de diâmetro e adaptados em suporte para filtração. Após a secagem dos papéis cromatográficos, foram realizadas medições diretas no papel empregando espectrômetro de fluorescência de raios-x de energia dispersiva. As curvas de calibração apresentaram resposta linear no intervalo de 0,050 a 1,50 μg mL-1 dos analitos. As repetibilidades, expressas em termos de RSD das soluções-padrão contendo 0,25 μg mL-1 de Cu, Fe, Ni e Zn, calculadas a partir de 15 determinações consecutivas, foram de 2,5, 2,8, 3,0 e 2,7%; e 3,1, 2,9, 2,8 e 2,7%, para matrizes com 96% e 50% de etanol, respectivamente. Obteve-se limites de quantificação (LQ) iguais a 43, 50, 50 e 40; e 47, 54, 59 e 45 μg mL-1, para matrizes com 96% e 50% de etanol, respectivamente. O procedimento foi verificado através de testes de recuperação, adicionando-se 100 μg L-1 de cada metal nas diferentes amostras, com resultados entre 92 e 99%. Os resultados obtidos pelo método proposto foram comparados com os resultados obtidos por um método comparativo usando ICP OES, após digestão das amostras, não apresentando diferenças significativas, com um nível de confiança de 95%. O método proposto é simples e não exigiu que as amostras fossem submetidas a qualquer pré-tratamento drástico ou demorado.
Salvador
Malcles, Julie. ""Etude des désintégrations B+/- -> K+/- pi0 et B+/- -> pi+/- pi0 avec le détecteur BABAR et contraintes des modes B -> pipi, Kpi, KK sur la matrice CKM."." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2006. http://tel.archives-ouvertes.fr/tel-00175074.
Повний текст джерелаFarget, Fanny. "Etude du peuplement et de la desexcitation de la structure rotationnelle superdeformee dans le noyau 132 cerium." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10081.
Повний текст джерела