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Dissertations / Theses on the topic 'Elektr energiya'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Ignatavičius, Edgaras. "Elektros energijos naudojimo tyrimas medienos apdirbimo pramonėje." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20080929_125503-72757.

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Didžiulės elektros energijos vartojimo sąnaudos karkasinių namų gamyboje ganėtinai ženkliai didina gamybos savikainos kaštus, kas tiesiogiai atsiliepia įmonės pelnui. Medienos apdorojimo pramonės produkcijos galima pagaminti gerokai daugiau (arba pagaminant tą patį kiekį suvartoti mažiau elektros energijos), ne vien tik kuriant naujus didesnio našumo medienos apdirbimo įrenginius, bet ir racionaliai naudojant esamus, bei nuolat juos modernizuojant. Šiame darbe tiriamas karkasinius namus gaminančios ir statančios įmonės UAB „Namų statyba“ elektros energijos suvartojimas. Buvo siekiama nustatyti

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2

Anglickas, Kęstutis. "ELEKTROS KOKYBĖS IR DARBO SĄLYGŲ PRAMONĖS ĮMONĖJE TYRIMAS." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20080929_152405-49258.

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Naujas LST EN 50160 standartas skatina vartotojus domėtis elektros energijos kokybe. Įtampos charakteristikų matavimai buvo atliekami mažos galios įmonės tinkluose: įmonės gamybos bare ir automatizuotoje garo gamybos katilinėje. Šiuose objektuose gausu naujos valdymo įrangos, daugiau kaip 30% galingumo sudaro netiesinės apkrovos, sukeltos puslaidininkinių prietaisų. Matavimai buvo atliekami su energijos kokybei skirtu matuoti prietaisu MEMOBOX. Buvo išmatuotos sekančios elektros energijos kokybės charakteristikos: dažnis, įtampos kitimo vertės, įtampos mirgėjimo aštrumas, tiekiamos įtampos per

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3

Hansblom, Claudia, and Maria Lindskog. "Hur elever uppfattar begreppet energi." Thesis, Malmö högskola, Fakulteten för lärande och samhälle (LS), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-33598.

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Syftet med vårt examensarbete har varit att undersöka hur elever uppfattar begreppet energi i årskurs 5. Teorierna vi valde att utgå från grundar sig på ett konstruktivistiskt- och sociokulturellt perspektiv. Inom den tidigare forskningen presenteras fyra olika undersökningar, varav två är genomförda med äldre elever/studenter och två är genomförda med yngre elever. Vi har valt att använda undersökningar som är genomförda med äldre elever/studenter eftersom vi inte hittat mycket genomförd forskning i årskurs 5. I vår metod valde vi att använda oss av enkäter och intervjuer. Båda metoderna utgi

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4

Paužaitė, Giedrė. "Atsinaujinančių elektros energijos išteklių efetyvumo ir poveikio aplinkai palyginimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100614_084619-79692.

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Darbe analizuojami atsinaujinančios elektros energijos ištekliai, pasirinkti remiantis atsinaujinančių išteklių energetikos įstatyme plačiausiai analizuojamais ir didžiausias perspektyvas turinčiais energijos ištekliais Lietuvoje. Išskirti trys pagrindiniai atsinaujinančios energetikos šaltiniai: vėjo energetika, biomasės deginimo metu gaunama elektros energija, bei hidroenergetika, pastarąją skirstome į didžiąsias hidroelektrines ir mažąsias hidroelektrines. Naujuoju atsinaujinančių išteklių energetikos įstatymu tikimasi elektros energijos dalį bendrajame šalies elektros energijos sunaudojime

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5

Bikulčius, Ramūnas. "Elektros energijos gamybos valdymas restruktūrizuotose elektros energetikos sistemose." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2005. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2005~D_20050719_144126-69975.

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Purpose of this work is to propose and study new ways of automatic generation control (AGC) and ways for accounting of this service; formulate key methodology principles of payment for system services; estimate costs of automatic generation control.

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6

Tichý, Jiří. "Multi-body modely dynamických soustav s elektro-mechanickými rezonátory." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443721.

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This thesis is dealing with creation of computation model of energy harvestors. Harvestors based on translational motion and planar motion were modeled. These models were created in MSC Adams. Proposed harvestors are tranforming mechanical vibrations into electrical energy by electromagnetical induction. To achieve better electrical output, harvestors were tuned to natural frequency suitable for chosen aplication. First proposed harvestor is meant for railway track. For validation of its usability in intended application, model of railway track section is also proposed. Force generated by pass

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7

Faria, Rute Quelvia de. "Avaliação dos modelos Probit e Logit com aplicação na longevidade de sementes de soja /." Botucatu, 2019. http://hdl.handle.net/11449/192673.

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Orientador: Maria Márcia Pereira Sartori<br>Resumo: O estudo da longevidade é uma ferramenta importante na análise da qualidade fisiológica em sementes. A modelagem da curva de sobrevivência em sementes permite a predição do seu período de vida, que baliza os mais variados estudos em conservação e tecnologia de sementes. O modelo de Probit foi inicialmente proposto como o modelo ideal para predição da longevidade das sementes, contudo, estudos têm reportado certa dificuldade de predição do modelo em diferentes condições de estresse e armazenagem a que as sementes são submetidas. A equação da v

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8

Salmazo, Clovis Tadeu. "Modelo de otimização eletro-energetico de curto prazo (pre-despacho) aplicado ao sistema Copel." [s.n.], 1997. http://repositorio.unicamp.br/jspui/handle/REPOSIP/261627.

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Orientador: Secundino Soares Filho<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica<br>Made available in DSpace on 2018-07-22T13:38:20Z (GMT). No. of bitstreams: 1 Salmazo_ClovisTadeu_M.pdf: 3939669 bytes, checksum: ca2d6d31953eb93daf93981a78942660 (MD5) Previous issue date: 1997<br>Resumo: A produção de energia elétrica no Brasil é constituída por um parque gerador predominante hidráulico, onde as usinas termoelétricas representam apenas 8% da potência instalada no país. Esta característica torna quase que obrigatória a operação coordenada do s

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9

Roth, Bernhard. "Spinabhängige Asymmetriefunktionen in der elastischen und inelastischen Elektron-Cäsium-Streuung bei mittleren Energien." [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=962339083.

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10

Hoefer, Axel. "Radiative corrections to hadron production in e+e- annihilations at DA_Ph63NE [DAPhiNE] energies." [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=965448592.

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11

Qu, Shaoyang, David Fassbender, Andrea Vacca, Enrique Busquets, and Uwe Neumann. "A closed circuit electro-hydraulic actuator with energy recuperation capability." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71077.

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The recent electrification trend in the off-road market has incentivized research towards the proposal of compact, cost-effective and energy-efficient solutions for hydraulic actuators. As a result, increased attention has been given to electro-hydraulic actuator (EHA) architectures. The paper offers a study performed on a novel closed-circuit EHA architecture with the goal to maximize the overall system efficiency while meeting or exceeding traditional off-road applications performance, thereby enabling further electrification of off-road applications. Both numerical and experimental approach

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12

Pieschel, Heike. "Korrekturen höherer Ordnung zur Abstrahlung harter Photonen in Elektron-Positron-Kollisionen bei hohen Energien." [S.l.] : [s.n.], 2002. http://elib.tu-darmstadt.de/diss/000235.

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13

Sepúlveda, Ramírez Francisco Javier. "Evaluación del uso de energía solar en electro-obtención de cobre." Tesis, Universidad de Chile, 2014. http://repositorio.uchile.cl/handle/2250/131489.

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Ingeniero Civil de Minas<br>El trabajo realizado aborda la opción de utilizar energía solar fotovoltaica para el proceso de electroobtención de cobre, realizando evaluación técnica y económica. Para ello se realiza un dimensionamiento considerando tres tipos de sistemas: conectado a la red, fuera de la red y mixto; siendo el primero aquél donde se realiza una evaluación como generador y los siguientes una evaluación desde una inversión por parte de la empresa minera. Esto se realiza de modo de cuantificar los ingresos según el modelo de negocio. El trabajo es realizado en dos tópicos, la eval

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14

Mittapalli, Tharun. "THIN FILM ELECTRO DEPOSITION OF MOLYBDENUM DISULFIDE FOR ENERGY STORAGE." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/theses/1816.

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Growing environmental factors like depletion of fossil fuels have given room to alternative energy technologies. Recently, attention has been focused on the development of the electrochemical capacitors with high power, which are called super capacitors for energy storage. Considering different materials and its oxides so far, ruthenium oxide, Magnesium oxide, Molybdenum sulfide, Molybdenum Oxides, Nickel Oxide has been investigated. Molybdenum oxides and sulfides have given more importance over all other materials because of its low cost, great quantity and very high capacity. Manganese oxide

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15

Maťaš, Marek. "Energy harvesting pro letecké aplikace." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-231031.

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This thesis will focus on creating electromagnetic vibration generator for a project ESPOSA. This generator will be used in aeronautical application. There it will be powering required electronics. Electronics is thought a part, which will be sensing, writing and sending required data.

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16

Fredricson, Sarchen. "Elevers förståelse kring energi och energiomvandlingar. Det naturvetenskapliga begreppet energi i relation till elevers vardagsföreställningar." Thesis, Malmö högskola, Lärarutbildningen (LUT), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-32853.

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Genom enkätundersökning i årskurs 8 och andra året på gymnasiet, på naturvetenskapligt och tekniskt program, har det undersökts: 1. elevernas begreppsförståelse om energi, 2. vilka vardagsföreställningar eleverna har om energi, 3. vilken av den naturvetenskapliga eller den vardagliga diskursen elever väljer att använda vid beskrivning av energi, samt 4. hur väl eleverna kan identifiera och beskriva energikedjor och energiomvandlingar. Jag har fördjupat mig i en mängd litteratur som behandlar en rad områden kring energi. Resultatet var att informanterna grundar främst energibegreppet i vardagsf

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17

Pegis, Michael Lee. "Using Thermodynamics and Mechanism to Understand and Improve Dioxygen Reduction Electro- and Photoelectrocatalysts." Thesis, Yale University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10957334.

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<p> The dioxygen reduction reaction (ORR) is a key process for renewable energy technologies such as batteries and fuel cells. Reliance on dioxygen as the terminal oxidant in fuel cell technologies requires the development of electrocatalysts that proceed at low overpotentials with fast rates, while maintaining adequate selectivity for H<sub>2</sub>O production over thousands of hours of operation. While many advances have been made, the discovery of efficient and inexpensive ORR electrocatalytic materials remains a holy-grail of energy science. The study of soluble, molecular electrocatalysts

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18

Nyman, Johan, and Amy Rankka. "Energy Efficient, Electric-Hydraulic Power Pack." Thesis, Linköpings universitet, Fordonssystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-119477.

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Along with increased oil prices and rising environmental issues, a demand for alternatives to combustion engine driven hydraulic applications has risen. In the field of mobile hydraulics, the hydraulic applications have traditionally been driven by the combustion engine of the vehicle on which they are mounted. By instead using a battery driven power pack the hydraulic application is able to operate without the engine running, saving fuel costs and reducing sound levels. In this thesis, the concept of using an electric-hydraulic power pack with a variable-speed electric motor and a fixed-displ

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19

AGUIAR, Osmani de Souza. "O mercado brasileiro de energia elétrica : critérios de decisão na migração de consumidores para o ambiente de contratação livre." Universidade Federal de Pernambuco, 2008. https://repositorio.ufpe.br/handle/123456789/3965.

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Made available in DSpace on 2014-06-12T17:17:38Z (GMT). No. of bitstreams: 2 arquivo3652_1.pdf: 758714 bytes, checksum: 22ad8b23a751c703f8b965bfd29585d0 (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2008<br>A reforma, ocorrida em 2004, no setor elétrico brasileiro manteve a competição no mercado de energia elétrica, especialmente na comercialização de energia para um grupo específico de agentes: os consumidores potencialmente livres. Esses podem exercer a opção de compra de energia elétrica seja no mercado cativo (regulado) ou no merc

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20

Trimble, A. Zachary. "Energy harvesting of random wide-band vibrations with applications to an electro-magnetic rotational energy harvester." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/67604.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 205-207).<br>In general, vibration energy harvesting is the scavenging of ambient vibration by transduction of mechanical kinetic energy into electrical energy. Many mechanical or electro-mechanical systems produce mechanical vibrations. The kinetic energy associated with these mechanical vibrations represents a potential source of energy for sensors and other electronics. In fact, as the energy requirements for elect

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21

Bennett, A. C. "Power system state estimation using an on-line time domain electro-mechanical transient simulator." Thesis, University of Bath, 2000. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323583.

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22

Le, Thi Xuan Huong. "Carbon felt modifications for electro-Fenton process towards zero energy depollution." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTT204/document.

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Ce manuscrit de thèse est consacré à la modification de feutres de carbone pour la préparation de matériaux d’électrodes hautement performants pour le procédé électro-Fenton (EF), appliqué aux traitements des eaux chargées en polluants bioréfractaires. Dans un premier temps, des feutres de carbone commerciaux (CF) ont été mis en œuvre pour optimiser l'élimination de colorants (Acide Orange) et de produits pharmaceutiques (Paracétamol). Les chemins réactionnels conduisant à la minéralisation de ces polluants bioréfractaires ont été élucidés et la toxicité des sous-produits identifiés a été déte

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23

Papievis, Juozas. "Kauno nuotėkų tinklų panaudojimas elektros energijos gamybai." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2009~D_20090603_100319-92458.

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Visų hidroelektrinių veikimo principas pagrįstas dviem pagrindiniais parametrais, - slėgio aukščiu ir debitais. Lietuvoje iki 2009 metų buvo pastatyta 82 MHE. Šis etapas jau baigiasi, kadangi potencialių vietų mažajai hidroenergetikai plėtoti Lietuvoje beveik neliko ir buvo paskelbtos upės, kuriose draudžiama statyti užtvankas. Šiame tyrime buvo ieškoma alternatyvaus, netradicinio sprendimo – vandentiekos ir vandenvalos tinklų panaudojimui. Tyrimų tikslas – išnagrinėti Kauno nuotėkų tinklų galimybes elektros energijos gamybai. Buvo apžvelgtos galimybės Pabaltijo šalyse panašaus tipo projektams

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24

Thomaz, Guilherme. "Projeto de leis de controle robusto do tipo PSC via realimenta??o de estados aplicada a um sistema UPS." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2009. http://tede2.pucrs.br/tede2/handle/tede/3011.

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Made available in DSpace on 2015-04-14T13:56:14Z (GMT). No. of bitstreams: 1 411910.pdf: 2200612 bytes, checksum: 4c44c72a81a3bd7eec64bd78b4b6c50a (MD5) Previous issue date: 2009-03-27<br>Esta disserta??o apresenta o desenvolvimento e a implementa??o de uma estrat?gia alternativa para o controle da tens?o de sa?da em Fontes Ininterruptas de Energia (tamb?m chamadas de UPS - Uninterruptible Power Supply). Esta estrat?gia ? denominada Controlador Proporcional, Senoidal e Cossenoidal (PSC). Os ganhos deste controlador s?o obtidos atrav?s de t?cnicas de otimiza??o convexa baseadas na formula??o

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25

Reidl, Tim, Jürgen Weber, and Steffen Ihlenfeldt. "Investigation of energy management topologies for forming presses with electro hydrostatic drivetrains." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71190.

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Recent Power On Demand approaches, realized by using speed and/or displacement variable pump units, led to a significant increase of energy efficiency on hydraulic forming presses. In this paper we follow up on this development by laying the focus on the energy management and storage design of such machinery. With a derived fluidtronical model, we compare five different topologies that supply and manage the power flow for a forming press with die cushion. Our evaluation criteria are: energy consumption, minimization of the infeed power, and qualitative costs. For a representative forming cycle

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El, Barraj Ali. "Growth and electro-thermomigration on semiconductor surfaces by low energy electron microscopy." Thesis, Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0393.

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Dans ce mémoire sont abordées quelques études sur la croissance, l'électromigration et la thermomigration de la surface des semiconducteurs tels que le Ge(111), le Si(100) et le Si(111). Sur le plan expérimental, la Microscopie à Electrons Lents (LEEM) nous a permis d'accéder à la dynamiques des phénomènes in situ et en temps réel. Nous étudions l'électromigration et la thermomigration sur la surface de Si(100) qui présente deux reconstructions de surfaces (2x1) et (1x2) selon l'orientation des dimères. Nous montrons que l'anisotropie de diffusion peut affecter le sens de mouvement des nanostr

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27

Delgado, Jair José Lopes. "Sistema de informação de apoio à detecção de perdas de energia eléctrica: o caso da Electra." Master's thesis, Universidade de Aveiro, 2010. http://hdl.handle.net/10773/8483.

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Mestrado em Engenharia Electrónica e Telecomunicações - Sistemas de Informação<br>A realidade mundial é preocupante no que diz respeito ao aumento de ocorrências de perdas e fraudes em redes de distribuição de energia eléctrica. Em Cabo Verde, mas precisamente na Cidade da Praia a realidade é ainda mais preocupante devido ao número de ocorrências e a gravidade dos mesmos. Propõe-se um trabalho de investigação sobre perdas e fraudes de energia eléctrica baseado na análise dos dados relativos aos registos dos clientes na Base de Dados da Electra (Cabo Verde), com o intuito de nortear as

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Doungmene, Floriant. "Molécules et matériaux à base de polyoxométallates pour l’énergie et l’environnement." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112173/document.

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Le présent travail de thèse porte sur la synthèse et la caractérisation de nouvelles molécules et matériaux à base de polyoxométallates (POMs) pour des applications dans les domaines de l’énergie et l’environnement. Dans le domaine de l’environnement, notre choix s’est porté sur la transformation électro-catalytique et photo-catalytique des espèces polluantes comme les oxydes d’azote et les colorants azoïques toxiques comme l’Acide Orange 7. Pour ce qui concerne le domaine de l’énergie, nous nous sommes focalisés sur des systèmes électro- catalytiques pour la production de l’hydrogène (combust

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29

Francisco, Gilson Nazareno. "Uma arquitetura para o gerenciamento de equipamentos eletro-eletrônicos." Florianópolis, SC, 2003. http://repositorio.ufsc.br/xmlui/handle/123456789/85116.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Ciência da Computação.<br>Made available in DSpace on 2012-10-20T15:30:26Z (GMT). No. of bitstreams: 1 194384.pdf: 1885713 bytes, checksum: 1695db5078f6eb5c6656f0ac1cbbe933 (MD5)<br>As constantes crises no setor de energia elétrica estão incentivando a criação e atualização dos serviços oferecidos pelas concessionárias de energia elétrica, com o intuito de melhorar a qualidade dos serviços prestados e fazer com que as mesmas sobrevivam no mundo globalizado. Este trabalho propõe um

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COSENZA, Alessandro. "EXPERIMENTAL CHARACTERIZATION OF ELECTRO-MEMBRANE PROCESSES FOR THE PRODUCTION AND STORAGE OF ENERGY." Doctoral thesis, Università degli Studi di Palermo, 2022. https://hdl.handle.net/10447/567648.

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Kloub, Hussam Abdelhamid [Verfasser], and Yiannos [Akademischer Betreuer] Manoli. "High effectiveness micro electro mechanical capacitive transducer for kinetic energy harvesting = Hocheffizienter mikroelektromechanischer kapazitiver Wandler für bewegungsbasiertes Energy Harvesting." Freiburg : Universität, 2011. http://d-nb.info/1123468230/34.

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Naz?rio, Cristiano Zanini. "Controle por realimenta??o linear de vari?veis de estado com modelo interno senoidal aplicado a fontes ininterruptas de energia." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2007. http://tede2.pucrs.br/tede2/handle/tede/3090.

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Made available in DSpace on 2015-04-14T13:56:39Z (GMT). No. of bitstreams: 1 395024.pdf: 4205635 bytes, checksum: 4ff717d6f44bb5107e794fe791c50d37 (MD5) Previous issue date: 2007-07-30<br>A evolu??o dos componentes eletr?nicos de pot?ncia das ?ltimas d?cadas, seguida de diferentes estrat?gias de controle desenvolvidas para conversores de pot?ncia est? resultando em diferentes aplica??es dos conversores de pot?ncia. Uma fam?lia destes conversores ? utilizada como parte do projeto de uma Fonte Ininterrupta de Energia comercial. Esta disserta??o apresenta uma estrat?gia alternativa para control

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33

Edén, Johan, and Fabian Lagerstedt. "An Electro-Hydraulically Controlled Cylinder on a Loader Crane." Thesis, Linköpings universitet, Fluida och mekatroniska system, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-151675.

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With tighter emission regulations for road vehicles pushing the technology forward, fuel savings are indirectly affecting the designs and technical solutions of loader cranes. By decentralizing the hydraulic power through driving each actuator separately, the goal of a more efficient crane drive is strived for. This thesis analyzes if the simple concept of a pump-controlled cylinder directly driven by an induction motor is achievable for a loader crane. Further, the crucial role of the induction motor is studied both mathematically and physically. A special research is also performed on energy

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Soroudi, Azadeh. "Melt Spun Electro-Conductive Polymer Composite Fibers." Doctoral thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-3590.

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One interesting approach is the development of conductive polymer composite fibers for innovative textile applications such as in sensors, actuators and electrostatic discharge. In this study, conductive polymer composite fibers were prepared using several different blends containing conductive components: a conjugated polymer (polyaniline-complex) and/or carbon nanotubes. Different factors such as processing parameters, the morphology of the initial blends and the final fibers, fiber draw ratio and material selection were studied separately to characterize their effects on the fiber propertie

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Sousounis, Marios Charilaos. "Electro-mechanical modelling of tidal arrays." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31089.

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The aim of this study is to present, compare and improve the options of power transmission for tidal current arrays. The potential to generate low or zero carbon power from the world’s tides is increasing as technology moves forward. The technically available tidal current energy resource, the resource that can be captured using existing technology, in the United Kingdom can supply a significant amount of the UK electricity demand. Even though tidal current devices have similarities to offshore wind turbines in many aspects, a number of characteristics differentiate the approach needed regardi

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Lakshminarayanan, Nandita. "Investigation and development of electro catalysts for Solid Oxide Fuel Cells." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1291134392.

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Oliveira, Jonas Ivan Nobre. "Modelagem molecular na caracteriza??o eletr?nica de oligopept?deos e na descri??o qu?ntica da intera??o f?rmaco-receptor." Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/13075.

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Made available in DSpace on 2014-12-17T14:10:24Z (GMT). No. of bitstreams: 1 JonasINO_DISSERT.pdf: 890224 bytes, checksum: a68b1b3f5f169bb87b98314d116a12b3 (MD5) Previous issue date: 2012-03-02<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>In this dissertation, the theoretical principles governing the molecular modeling were applied for electronic characterization of oligopeptide α3 and its variants (5Q, 7Q)-α3, as well as in the quantum description of the interaction of the aminoglycoside hygromycin B and the 30S subunit of bacterial ribosome. In the first stud

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Amrollah, Elmira. "Modelling and identification of a highly integrated electro-hydraulic energy converter for robotic applications." Versailles-St Quentin en Yvelines, 2013. http://www.theses.fr/2013VERS0010.

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Le but de ce travail est d’étudier et de modéliser les paramètres internes d’un actionneur hydraulique hautement intégré (IEHA), ainsi qu’identifier les paramètres qui influencent le comportement et le rendement du système, selon les tâches à accomplir. Etant donné la conception compacte d’IEHA, il est difficile de mesurer les variables internes du système tels que la perte de pression interne et les fuites. Cependant, il est nécessaire d’évaluer l’influence des paramètres géométriques, ainsi que les paramètres définis par la tâche sur ces variables internes et sur le comportement et le rendem

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Oliveira, Haroldo Gregorio de 1979. "Tratamento de efluentes por energia solar : fotocatalise heterogenea eletro-assistida utilizando eletrodos de TiO2 nanocristalino e celulas solares." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250021.

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Orientador: Claudia Longo<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-08-11T02:23:42Z (GMT). No. of bitstreams: 1 Oliveira_HaroldoGregoriode_M.pdf: 1498892 bytes, checksum: 94792fd721fe4b8da6e2331d467aa96d (MD5) Previous issue date: 2008<br>Resumo: Desenvolveu-se um novo sistema para tratamento de água por fotocatálise heterogênea eletroassistida (FHE) constituído por um contraeletrodo de Pt e fotoeletrodo de TiO2 conectado a uma celula solar. O fotoeletrodo foi preparado pela deposição de um filme de nanopartículas

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Pires, Igor Amariz. "Caracterização de harmônicos causados por equipamentos eletro-eletrônicos residenciais e comerciais no sistema de distribuição de energia elétrica." Universidade Federal de Minas Gerais, 2006. http://hdl.handle.net/1843/AVFV-6W7Q9H.

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The non linearity on the profile of residential and commercial electrical loads has been growing, mainly in these days of seeking for bigger energy efficiency of household appliances as well as the access of the population to electronic consumer goods. The preocupation for a better power quality has been growing by the customer and also by the energy distributors. This work aims to characterize the harmonics caused by electrical-electronic households of residential and commercial consumers and to study the impacts of these harmonics caused on the distribution system. First of all, it will be s

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Danielsson, Jessica, and Pontus Nilsson. "Elevers måltider under skoldagen : en undersökning av energi- och näringsintag bland elever i årskurs 3." Thesis, Högskolan Kristianstad, Sektionen för lärande och miljö, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-9259.

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Det är viktigt att elever i skolan äter tillräckligt mycket mat under skoldagen så att de orkar hålla koncentrationen uppe och kan prestera bra i skolan. Syftet var att undersöka om innehållet av energi (kcal), protein, fett och kolhydrater är tillräckligt i maten som elever i årskurs 3, som är på fritidshem före och efter skolan, äter till frukost, lunch och mellanmål under en skoldag. En kartläggning gjordes över vad åtta elever åt under tre måltider under en skoldag och intaget energi- och näringsintag beräknades i relation till Livsmedelsverkets rekommendationer. Resultatet visade att elev

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Roth, Friedrich. "Electronic structure of selected aromatic hydrocarbon systems investigated with electron energy-loss spectroscopy." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-106800.

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Organic materials with fascinating/intriguing electronic properties have been the driving force for many research activities in the past, and in particular for important progress in materials science covering both new functional materials as well as theoretical developments. In addition, charge transfer, i. e., the addition or removal of charges to or from molecules in organic solids is one route to modify and control their electronic properties. Recently, the discovery of superconductivity in several alkali metal intercalated hydrocarbon systems (picene, phenanthrene, coronene and 1,2;8,9-dib

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Šulga, Dalius. "Aktyviosios ir reaktyviosios galių režimų valdymas restruktūrizuotoje elektros energetikos sistemoje." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2005. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2005~D_20050725_141002-21944.

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The main objective of the Thesis is to work out the methodology aimed to develop a closely integrated electricity network model to be used for real time calculations, and afterwards, based on this methodology, to develop a model of a closely integrated electricity network, which would be applicable in real time calculations of active and reactive power.

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Winkler, Torsten, Zaaijer Rik de, and Christian Schwab. "Energy-efficient steering systems for heavy-duty commercial vehicles." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-199785.

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Besides the braking system the steering system is one of the most important systems on vehicles. The reliability and the performance of a steering system decides on the controllability of the vehicle under normal conditions as well as emergency situations. In everyday use the characteristics, the connectivity to assistance systems and the energy efficiency of the steering system become more and more important to fulfill the increasing demands regarding fuel consumption, carbon dioxide emissions and comfort. To meet these demands, new steering systems must be implemented and new technologies ha

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Agerhäll, Britta, and Maja Söderqvist. "Energi- och näringsinnehåll i det faktiska intaget av skollunch : en jämförelse mellan pojkar och flickor i årskurs 5." Thesis, Umeå universitet, Institutionen för kostvetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-95392.

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Bakgrund Det är viktigt att införa goda matvanor i tidig ålder då dessa lägger grunden för en god hälsa i framtiden. En balanserad och hälsosam kost är dessutom associerad med bättre inlärningsförmåga hos barn. Tidigare forskning visar att det finns skillnader i energi- samt näringsintag hos pojkar och flickor. Syfte Syftet med studien var att undersöka eventuella skillnader i intagen skollunch mellan pojkar och flickor samt att jämföra dem med Nordiska näringsrekommendationer (NNR) med fokus på energi- samt näringsinnehåll. Metod Studien genomfördes via ett samarbete med forskningsprojekte

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Arcos, Avilés Diego Gustavo. "Energy management strategies based on fuzzy logic control for grid-tied domestic electro-thermal microgrid." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/396164.

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The environmental and economic benefits related to the reduction of both carbon dioxide emission and transmission losses have made distributed renewable generation systems became a competitive solution for future power systems. In this context, Microgrids (MG) are considered as the key building blocks of smart grids and have aroused great attention in the last decade for their potential and the impact they may have in the coming future. The MG concept has captured great attention in the last years since it can be considered one of the most suitable alternatives for integration of distributed g

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Irwin, Blake A. "Electro-weak corrections to top decay; and the Upsilon inclusive JPsi decay width in perturbative Q.C.D." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=70312.

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The order $G sb{F}m sbsp{t}{2}$ electro-weak corrections to the decay $t to bW sp+$ are calculated, arising essentially from virtual radiation of the Higgs boson. For large $m sb{t}$ these represent the dominant effect serving to shift the top lifetime from its tree level value. In practice, for $m sb{t}$ $<$ 240 $GeV$ these corrections are typically 0.1%. A comparison with recent calculations of the complete electro-weak and strong effects is made.<br>Several contributions to the branching ratio for the inclusive decay $ Upsilon to J/ psi X$ are calculated using perturbative Q.C.D. to lowest

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Raposo, Carlos Eduardo Ferreira. "O impacto do crescimento do segmento de mercado rural de energia elétrica no sistema eletro-energético da CEEE: enfoque oferta x demanda no litoral sul." Pontifícia Universidade Católica do Rio Grande do Sul, 2008. http://hdl.handle.net/10923/3230.

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Made available in DSpace on 2013-08-07T18:53:44Z (GMT). No. of bitstreams: 1 000400272-Texto+Completo-0.pdf: 1333432 bytes, checksum: 0cda6c91819b7e219551540b1004c734 (MD5) Previous issue date: 2008<br>The main objective of this work is to estimate the impact of Demand Side Management (DSM) actions on the electric power transmission and distribution system of a specific region located in south Brazil. The study presented here is based on a set of data collected from the biggest consumers on the southwest coast of the state Rio Grande do Sul. These data showed that the biggest impact on the s

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Satkauskaitė, Renata. "Retųjų žemės elemtų Prazeodimio (Pr) ir Holmio (Ho) energijos lygmenų tyrimas bei ryšio tipų nustatymo būdai." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2006. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2006~D_20060614_114424-20200.

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Master‘s theses, 62 pages, 9 tables, 22 pictures, 19 literary resources, 2 appendixes, language – Lithuanian. Thesis includes important key words and concepts: rare-earth atom, energy, level, coupling, spectrum, electron, moment, Hund, Pauli, lanthanide. The purpose of this work – to analyse Praseodymium (Pr) and Holmium (Ho) and their ions energy level spectrum and analyses. Indoctrinate different coupling types, and give explanations of the rules how to definite terms. There are several problematical tasks set, to help in reaching this purpose: • analysis of the energy spectrum properti

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Hasan, Mehedi. "Coherent Optical & Electro-Optical Signal Processor Circuit Architectures for Photonic Integration." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/41580.

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The capacity of optical communications networks continues to grow unabated. Applications for streaming video, social networking and cloud computing, are driving exponential growth of the traffic carried over the world’s ICT networks, which has been sustained thus far through the proliferation of datacenters and efficient, effective use of existing optical fibre. To meet increasing capacity demands requires increasingly sophisticated modulation formats and spectral management to achieve effective use of the available spectrum provided by an optical fibre. Moreover, the technology developed for

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