Log in

Relevant bibliographies by topics / Gap energy / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Gap energy.

Dissertations / Theses on the topic 'Gap energy'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Gap energy.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Пімоненко, Тетяна Володимирівна, Татьяна Владимировна Пимоненко, Tetiana Volodymyrivna Pimonenko, et al. "Energy efficiency gap on national economy." Thesis, Economic Laboratory for Transition Research, 2020. https://essuir.sumdu.edu.ua/handle/123456789/81065.

Full text

Abstract:

The unsynchronized of the country's environmental, energy and economic policies raises the dilemma of the priority of a fundamentally new trajectory of the country's development and the achievement of the Sustainable Development Goals in the field of energy efficiency and energy saving. At the same time, reinforcing of environmental conflicts, increasing tendency of energy consumption and greenhouse gas emissions requires a primary focus on the formation of effective mechanisms for solving and energy problems and providing energy security. In this direction, the formation of a fundamentally ne

APA, Harvard, Vancouver, ISO, and other styles

2

Fields, Richard Peter. "Capacitive energy storage : bridging the gap." Thesis, University of Surrey, 2018. http://epubs.surrey.ac.uk/842394/.

Full text

Abstract:

Energy storage is a fundamental requirement for utilising clean but intermittent renewable resources, maintaining a resilient power grid and powering a multitude of portable electric devices and systems. The work presented in this thesis investigates methods of filling the performance gap between electrochemical capacitors (EC) (commonly known as supercapacitors) and batteries; the former often have high power capability but low energy density while the latter often have high energy density but low power capability. Three approaches towards this are taken during this work: first, capacitance b

APA, Harvard, Vancouver, ISO, and other styles

3

Cheekoori, Reddiprasad. "Electron transport in wide energy gap semiconductors." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/40421.

Full text

Abstract:

The dependence of the low-field electron drift mobility on the crystal temperature is determined for a number of wide energy gap semiconductors of interest. The materials considered include gallium nitride, aluminium nitride, indium nitride, and zinc oxide; while indium nitride is not a wide energy gap semiconductor in of itself, alloys of indium nitride with gallium nitride are. For the bulk results, it is found that indium nitride exhibits the highest low-field electron drift mobility while aluminium nitride exhibits the lowest low-field electron drift mobility. This is related to the sma

APA, Harvard, Vancouver, ISO, and other styles

4

Wang, Yijia. "HVAC operation uncertainty in energy performance gap." Thesis, Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53858.

Full text

Abstract:

This study aims at a preliminary characterization of system operation uncertainty. It bases this on an analysis of the energy consumption of 6 existing buildings on the Georgia Tech campus. The analysis is speculative in nature.

APA, Harvard, Vancouver, ISO, and other styles

5

Ji, Zhonghang. "Strain-induced Energy Band-gap Opening of Silicene." Wright State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1432635166.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Nisar, Jawad. "Atomic Scale Design of Clean Energy Materials : Efficient Solar Energy Conversion and Gas Sensing." Doctoral thesis, Uppsala universitet, Materialteori, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-179372.

Full text

Abstract:

The focus of this doctoral thesis is the atomic level design of photocatalysts and gas sensing materials. The band gap narrowing in the metal oxides for the visible-light driven photocatalyst as well as the interaction of water and gas molecules on the reactive surfaces of metal oxides and the electronic structure of kaolinite has been studied by the state-of-art calculations. Present thesis is organized into three sections. The first section discusses the possibility of converting UV active photocatalysts (such as Sr2Nb2O7, NaTaO3, SrTiO3, BiTaO4 and BiNbO4) into a visible active photocatalys

APA, Harvard, Vancouver, ISO, and other styles

7

Sun, Yuming. "Closing the building energy performance gap by improving our predictions." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/52285.

Full text

Abstract:

Increasing studies imply that predicted energy performance of buildings significantly deviates from actual measured energy use. This so-called "performance gap" may undermine one's confidence in energy-efficient buildings, and thereby the role of building energy efficiency in the national carbon reduction plan. Closing the performance gap becomes a daunting challenge for the involved professions, stimulating them to reflect on how to investigate and better understand the size, origins, and extent of the gap. The energy performance gap underlines the lack of prediction capability of current bui

APA, Harvard, Vancouver, ISO, and other styles

8

Eriksson, Linnea. "The impact of calculation methods on the gap between predicted and actual energy performance of buildings : Using a thermal simulation model of a building." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-33225.

Full text

Abstract:

The building sector is responsible for almost a quarter of the total carbon dioxide emissions. The urgency to reduce the emissions is reflected in the stricter guidelines which have been set all over the world. To reduce the building sector’s emissions the energy consumption need to be reduced, which can be done in two ways: building new energy efficient buildings or retrofitting of current buildings. Due to the life expectancy of current building stock the largest savings before 2030 will be made through retrofits. For this reliable computational tools are required, and currently there is a g

APA, Harvard, Vancouver, ISO, and other styles

9

Cammisa, Eduardo G. "Synthesis of low band gap polymers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0019/MQ55489.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Mehdizadeh, Gavgani Arash. "Advanced model-based control of energy efficient torque-gap filling drivetrains." Thesis, University of Surrey, 2016. http://epubs.surrey.ac.uk/811737/.

Full text

Abstract:

This thesis deals with advanced modelling and control of energy efficient automotive drivetrains with torque-fill capability during gearshifts. The literature discussing automotive transmission technology, in particular manual transmissions, automated manual transmissions (AMTs) and dual clutch transmissions (DCTs), with the respective gearshift control methodologies, is reviewed in detail. To increase the overall drivetrain efficiency and address the problem of AMT torque interruption during the shift transients, a novel transmission layout, named as ‘6+2’ in the remainder of the thesis, is i

APA, Harvard, Vancouver, ISO, and other styles

11

Dean, Cory. "A study of the fractional quantum hall energy gap at half filling." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40784.

Full text

Abstract:

A complete understanding of the the ν = 5/2 fractional quantum hall effect (FQHE) continues to be among the most exciting problems in semiconductor physics. It is widely believed that this unique electron state is described by the Moore-Read Pfaffian wavefunction, resulting from a BCS-like pairing of composite fermions. In recent years this wavefunction has received special interest owing to its non-abelian quantum statistics which underlies a new paradigm for fault tolerant quantum computation. However, in spite of several theoretical advancements, an unequivocal experimental verification of

APA, Harvard, Vancouver, ISO, and other styles

12

Zhou, Xiang-Yu (Xiang-Yu Leo). "Error-suppression by energy-gap protection for quantum computation in open systems." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/92671.

Full text

Abstract:

Thesis: S.B., Massachusetts Institute of Technology, Department of Physics, 2014.<br>Missing pages 43 and 44. Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 57-58).<br>Adiabatic Quantum Computation, while attractive due to its "hands-off" approach and intrinsic tolerance of noise, has not been shown to be fully fault-tolerant in a satisfying manner. The protection of the evolution from noise and decoherence through the use of an energy penalty, recently proposed as a method to suppress error in adiabatic algorithms, is also appealing due to its passiveness.

APA, Harvard, Vancouver, ISO, and other styles

13

Persson, Johannes. "Low-energy buildings : energy use, indoor climate and market diffusion." Doctoral thesis, KTH, Energiprocesser, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-143480.

Full text

Abstract:

Low-energy buildings have, in recent years, gained attention and moved towards a large-scale introduction in the residential sector. During this process, national and international criteria for energy use in buildings have become stricter and the European Union has through the Energy Performance of Buildings Directive imposed on member states to adapt their building regulations for ‘Nearly Zero Energy Buildings’, which by 2021 should be standard for new buildings. With a primary focus on new terraced and detached houses, this thesis analyses how the concept of low-energy buildings may be furth

APA, Harvard, Vancouver, ISO, and other styles

14

Sodipe, Olukayode O. "Wide-band Gap Devices for DC Breaker Applications." DigitalCommons@CalPoly, 2016. https://digitalcommons.calpoly.edu/theses/1529.

Full text

Abstract:

With the increasing interest in wide-band gap devices, their potential benefits in power applications have been studied and explored with numerous studies conducted for both SiC and GaN devices. This thesis investigates the use of wide-band gap devices as the switching element in a semiconductor DC breaker. It involves the design of an efficient semiconductor DC breaker, its simulation in SPICE, construction of a hardware prototype and the comparative study of SiC and Si versions of the aforementioned breaker. The results obtained from the experiments conducted in the process of concluding thi

APA, Harvard, Vancouver, ISO, and other styles

15

NICHETTI, CAMILLA. "Development of avalanche photodiodes with engineered band gap based upon III-V semiconductors." Doctoral thesis, Università degli Studi di Trieste, 2021. http://hdl.handle.net/11368/2982139.

Full text

Abstract:

This thesis is striving in the development and performance assessment of GaAs/AlGaAs avalanche photodiodes (APDs) with separated absorption and multiplication regions, which complement existing silicon detectors providing higher efficiency for X-ray detection. During the course of this thesis several APDs were fabricated utilizing molecular beam epitaxy and lithography and subsequently have been thoroughly characterized. This thesis is subdivided into six chapters. It sets in with a general description of APD structures and their functionalities prescinding the advantages of the developed APDs

APA, Harvard, Vancouver, ISO, and other styles

16

Kammler, Marvin. "MD simulations of atomic hydrogen scattering from zero band-gap materials." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2019. http://hdl.handle.net/21.11130/00-1735-0000-0003-C17A-A.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Åberg, Anna. "A Gap in the Grid : Attempts to introduce natural gas in Sweden 1967-1991." Doctoral thesis, KTH, Teknik- och vetenskapshistoria, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-121546.

Full text

Abstract:

This thesis follows the process of introducing natural gas in Sweden and the construction of a Northern European gas grid from 1967 to 1991. Natural gas is a relatively unnoticed fuel in Sweden today, but this relative anonymity stands in contrast to an extensive historical activity that has taken place behind the scenes of Swedish energy policy. The single pipeline constructed between Denmark and Sweden in the early 1980s was both preceded and followed by many other attempts to construct a larger natural gas pipeline in the region made in the last 50 years. Åberg traces these attempts while d

APA, Harvard, Vancouver, ISO, and other styles

18

Osz, Katalin. "Improvisatory home heating : the gap between intended and actual use of radiators and TRVs." Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/21742.

Full text

Abstract:

Ongoing modification and change is core to how domestic and built environments function. Thus occupants domestication and development of home heating practices around low-carbon technologies is likely to exceed what building engineering sciences have the ability to plan ahead for. Yet, environmental policies and low -carbon industry approaches to sustainable energy consumption are characterised by a high degree of technological determinism. Disciplinary approaches to sustainable energy consumption tend to separate home heating into stable, routine interaction with control points, environmental

APA, Harvard, Vancouver, ISO, and other styles

19

Gaspar, i. Fàbregas Kàtia. "Impact assessment of the façades' actual state on the energy performance gap of residential buildings." Doctoral thesis, Universitat Politècnica de Catalunya, 2018. http://hdl.handle.net/10803/669241.

Full text

Abstract:

Bridging the gap between the predicted and actual energy performance of buildings is necessary to increase the energy performance of existing buildings and achieve the European Union’s energy efficiency targets in the “2030 climate & energy framework”. Construction is considered the sector with the most potential for energy saving. Specifically, buildings space heating has considerable potential for energy saving. Thermal transmittance is the fundamental parameter to characterise the heat losses of building envelopes. However, several research authors evidenced that assumptions regarding heat

APA, Harvard, Vancouver, ISO, and other styles

20

Veal, Timothy David. "High resolution electron energy loss spectroscopy of narrow gap III V semiconductor surfaces and interfaces." Thesis, University of Warwick, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252483.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Adu, Bright. "Characterizing Water as Gap Fill for Double Glazing Units." TopSCHOLAR®, 2015. http://digitalcommons.wku.edu/theses/1479.

Full text

Abstract:

The use of sunlight has always been a major goal in the design and operation of commercial buildings to minimize electrical consumption of artificial lighting systems. Glazing systems designed to allow optimal visible light transmission also allow significant unwanted direct solar heat gain caused by infrared light. Conversely, glazing systems that are designed to reflect unwanted direct solar heat gain significantly reduce the transmittance of visible light through windows. The goal of this research was to characterize the performance of water as gap-fill for double-glazing units in eliminati

APA, Harvard, Vancouver, ISO, and other styles

22

Yang, Linda, and Robert Liao. "Water Purification : Research on the Energy Supply of Air Gap Membrane Distillation for Access to Clean Water." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-282905.

Full text

Abstract:

Water stress is an ongoing problem in many places in the world, while the demand for clean and safe freshwater is growing due to the increasing population. In many developing countries, water supplies often are contaminated with arsenic, fluoride, etc. Therefore, it is important to realize that water scarcity and contamination issues concern only one sector but many. HVR Water Purification AB is developing a water purification prototype – ELIXIR 500 - using the air gap membrane technology and is implemented in Odisha, India, aiming to supply with 200 litre water daily. This thesis aims to esti

APA, Harvard, Vancouver, ISO, and other styles

23

VALLONE, MARCO ERNESTO. "Physics-based simulation of narrow and wide band gap photonic devices." Doctoral thesis, Politecnico di Torino, 2016. http://hdl.handle.net/11583/2639782.

Full text

Abstract:

Historically, infrared (IR) detector technologies are connected mainly with controlling and night-vision problems: in a first stage, applications concerned simply with detection of IR radiation, but very soon capabilities to form IR images were developed, opening the way to systems for recognition and surveillance, especially for military purposes. Since the last decade of the twentieth century, the use of IR imaging systems for civil and peaceful purposes have increased continuously: these include medical and industrial applications, detection of earth resources, earth and universe sciences,

APA, Harvard, Vancouver, ISO, and other styles

24

Mohsen, Oftadeh, and Barati Bahman. "Theoretical study of 1 and 4 benzoquinone and difluoro derivatives of benzoquinone on zinc oxide nano particles by dft method." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/20545.

Full text

Abstract:

This study investigates some aspects of interaction between 1 and 4 benzoquinone (BQ) and fluoro derivatives of 1, 4-BQ on surface of zinc oxide nanopatricles theoretically with using density functional method (B3LYP) and 6-31G as basis set. The significant quantities include HOMO, LUMO, chemistry potential, hardness and dipole moment have been computed and compared. The highest gap energy and the most hardness can be referred to the 1, 4- difluoro benzoquinone compared with two another derivatives, 2,5- and 2,6- difluoro benzoquinone. This interaction showed that these groups stabilize the r

APA, Harvard, Vancouver, ISO, and other styles

25

Dahan, Danielle (Danielle S. ). "Whose fault is it anyway? evaluating the energy efficiency gap in commercial buildings & measuring energy savings associated with fault detection and diagnostics." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/115034.

Full text

Abstract:

Thesis: S.M. in Technology and Policy, Massachusetts Institute of Technology, School of Engineering, Institute for Data, Systems, and Society, Technology and Policy Program, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>According to the International Energy Agency, energy efficiency programs make up 72% of global greenhouse gas abatement strategies. However, there is extensive literature that shows compelling evidence for an "energy efficiency gap" in which expected energy savings from energy efficiency programs are not realized. Due to the importanc

APA, Harvard, Vancouver, ISO, and other styles

26

Rung, Andreas. "Numerical Studies of Energy Gaps in Photonic Crystals." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5848.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Findlay, Peter Charles. "Free electron laser spectroscopy of narrow gap semiconductors." Thesis, Heriot-Watt University, 2000. http://hdl.handle.net/10399/528.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Hughes, Alison Frances. "A new theory of lasers with application to photonic band gap materials." Thesis, King's College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368127.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

van, Someren Katherine Louise. "User behaviour and perception as drivers for lighting energy efficiency and performance gap reduction in higher education." Thesis, University of Reading, 2018. http://centaur.reading.ac.uk/77156/.

Full text

Abstract:

User behaviour and perception are key drivers for lighting energy efficiency and performance gap reduction in higher education. Changing the way we conduct post occupancy evaluation to include retrofits and understanding users' needs more thoroughly will ultimately lead to a greater reduction in CO, emissions. A pilot interview study was carried out with University of Reading Whiteknights campus with a total of 6 staff and students in 2014 and developed into a main interview study with 9 academic staff in 2015. During 2014 to 2016 data loggers were deployed for six months to 10 single occupanc

APA, Harvard, Vancouver, ISO, and other styles

30

Chandler, Simon John. "Electron tunnelling study of high-temperature superconductors." Thesis, University of Cambridge, 1994. https://www.repository.cam.ac.uk/handle/1810/270328.

Full text

Abstract:

This dissertation describes work carried out between June 1987 and October 1991, in the Low Temperature Physics Group at the Cavendish Laboratory, Cambridge. The aim of this work was to use electron tunnelling spectroscopy to measure the density of excitation states of the recently discovered high-temperature superconductors. Tunnelling is the most sensitive method for measuring a superconductor’s energy gap, and historically has provided important evidence for the microscopic mechanism of superconductivity in conventional metals. It was hoped that electron tunnelling would prove equally succe

APA, Harvard, Vancouver, ISO, and other styles

31

Chu, Anne-Mareike. "Understanding the performance gap : an evaluation of the energy efficiency of three high-performance buildings in British Columbia." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/57734.

Full text

Abstract:

The market shift towards high-performance buildings has been brought into question by growing concerns about the actual energy efficiency of these projects. Research studies have been pointing increasingly to performance gaps between the predicted (or modelled) and actual (or measured) energy consumption of certified ‘green’ buildings. Discussions about reasons for performance gaps have been recurring in the building industry and research alike. This thesis investigates the energy performance gap of three high-performance LEED-certified buildings in British Columbia: the Centre for Interactive

APA, Harvard, Vancouver, ISO, and other styles

32

Kevin, Punarja. "On the synthesis, measurement and applications of solar energy materials and devices." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/on-the-synthesis-measurement-and-applications-of-solar-energy-materials-and-devices(9273d60d-cc5a-4992-8fae-ac9ddefa506b).html.

Full text

Abstract:

Second generation solar cells based on thin film semiconductors emerged as a result of the past ten years of intense research in the thin film preparation technology. Thin film solar cell technology can be cost effective as it uses comparatively cheap materials suitable for solar building integration. Chemical Vapour Deposition (CVD) is a well-known method for the deposition of high quality thin films. This thesis describes the synthesis of novel tin(II)dithiocarbamate [Sn(S2CNEt2)2] and bis(diphenylphosphinediselenoato) tin(II) [Sn(Ph2PSe2)2] and these complexes as single source precursor for

APA, Harvard, Vancouver, ISO, and other styles

33

Bakarezos, Efthimios. "Ultrafast nonlinear optics of wide-gap II-VI quantum wells and polymeric materials." Thesis, Heriot-Watt University, 2000. http://hdl.handle.net/10399/519.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Andersson, Stefan. "Low consistency refining of mechanical pulp : process conditions and energy efficiency." Licentiate thesis, Mittuniversitetet, Institutionen för naturvetenskap, teknik och matematik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-15406.

Full text

Abstract:

The thesis is focussed on low consistency (LC) refining of mechanical pulp. Theresearch included evaluations of energy efficiency, development of pulpproperties, the influence of fibre concentration on LC refining and effects of rotorposition in a two-zoned LC refiner. Trials were made in mill scale in a modern TMP line equipped with an MSDImpressafiner for chip pre-treatment, double disc (DD) first stage refining and aprototype 72-inch TwinFlo LC refiner in the second stage. Tensile index increasedby 8 Nm/g and fibre length was reduced by 10 % in LC refining at 140 kWh/adtgross specific refin

APA, Harvard, Vancouver, ISO, and other styles

35

Rotzek, Jan Niklas, Christoph Scope, and Edeltraud Guenther. "What energy management practice can learn from research on energy cultures?" Emerald, 2018. https://tud.qucosa.de/id/qucosa%3A75731.

Full text

Abstract:

Purpose – This investigation aims to reframe the sizeable literature on barriers and drivers for energy efficiency measures and the phenomenon of the energy efficiency gap. We identified a gap between academic methods and industrial needs as well as a neglect of the cultural di-mension, despite its considerable impact. Based on this insight, the purpose of this paper is to integrate all of the various influences on industrial energy behavior previously identified in the literature in a refined energy cultures framework. Design/methodology/approach – This paper includes a systematic literature

APA, Harvard, Vancouver, ISO, and other styles

36

Doylend, Nicholas. "Evaluating building energy performance : a lifecycle risk management methodology." Thesis, Loughborough University, 2015. https://dspace.lboro.ac.uk/2134/18022.

Full text

Abstract:

There is widespread acceptance of the need to reduce energy consumption within the built environment. Despite this, there are often large discrepancies between the energy performance aspiration and operational reality of modern buildings. The application of existing mitigation measures appears to be piecemeal and lacks a whole-system approach to the problem. This Engineering Doctorate aims to identify common reasons for performance discrepancies and develop a methodology for risk mitigation. Existing literature was reviewed in detail to identify individual factors contributing to the risk of a

APA, Harvard, Vancouver, ISO, and other styles

37

Righini, Matteo. "Misure di trasmittanza ottica di nanoparticelle di Ti(1-x)V(x)O(2)." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7698/.

Full text

Abstract:

Negli ultimi tempi sta assumendo grande importanza la ricerca sulla produzione di idrogeno dall’acqua tramite celle foto-elettrolitiche. In questa tesi vengono descritte le analisi condotte su un materiale che può essere coinvolto in questa applicazione: il TiO2 drogato con atomi di V. In particolare è stato valutato l’effetto del drogaggio sull’energy gap tramite misure di trasmittanza ottica effettuate in laboratorio su campioni con diverse concentrazioni di V e trattati termicamente a varie temperature. Nel primo capitolo vengono descritte le caratteristiche dei semiconduttori legate all’ot

APA, Harvard, Vancouver, ISO, and other styles

38

Deitz, Julia. "Bridging the Gap: Probing Structure-Property Relationships in Functional Materials through Advanced Electron Microscopy Based Characterization." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1543506730719345.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Pinthuprapa, Chatchai. "An Investigation Into the Effectiveness of Energy Savings Performance Contracting (ESPC) Structure| How to Fill the Opportunity to Implementation Gap." Thesis, University of Missouri - Columbia, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10629016.

Full text

Abstract:

<p> This dissertation introduce and empirically verify a structure of Energy Savings Performance Contracting (ESPC) perspective among clients, Energy Service Companies (ESCOs) and governments. The new approach ESPC structure model presented herein is built on the Motivation-Opportunity-Ability (MOA) theory where key influences are identified. An important component of performance contracting, the performance measurement, has been incorporated in the structure to monitor the effect on ESPC implementation success.</p><p> The proposed structure and hypothesis were verified as a current ESPC pra

APA, Harvard, Vancouver, ISO, and other styles

40

Andrade, Arvizu Jacob Antonio. "Band gap grading strategies for high efficiency kesterite based thin film solar cells." Doctoral thesis, Universitat de Barcelona, 2021. http://hdl.handle.net/10803/672671.

Full text

Abstract:

The main subject of this work focuses on the development of advanced technological strategies for bandgap profile engineering on Earth-abundant and eco-friendly kesterite thin film solar cells which potentially optimize and enhance the energy power conversion efficiency of solar cell devices. By exposing the contemporneuous world energy consumption hassles and its direct implication with the heating imbalance produced by the current greenhouse gas emissions; it is doubtlessly notified that renewable energy supplies, mainly based on thin film solar cells, and focused on sustainable materials s

APA, Harvard, Vancouver, ISO, and other styles

41

Lane, Anna-Lena. "Building-related renewable electricity production with storage and energy-efficient buildings : Exploring barriers, drivers and quality assurance." Licentiate thesis, Högskolan i Gävle, Energisystem och byggnadsteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-33402.

Full text

Abstract:

There is a need to reduce unsustainable use of fossil fuels. Increased usage of renewable energy by combined use of photovoltaic solar panels (PV) with battery storage is one way. Another way is to increase awareness of energy usage and reduce the energy performance gap by building energy-efficient buildings. Buildings have a long lifetime and high energy usage will have an impact for a long time. Barriers, drivers and non-energy benefits (NEBs) for investments in battery storage in photovoltaic systems (PV) in the context of farmers in Sweden with PV systems was investigated by a questionnair

APA, Harvard, Vancouver, ISO, and other styles

42

Dadabhoy, Anjum. "The development of luminescent lanthanide complexes for biological applications." Thesis, University of Surrey, 2001. http://epubs.surrey.ac.uk/843919/.

Full text

Abstract:

To serve well as luminescent labels in biological applications, complexes of the lanthanide ions need to fulfil many criteria, including the requirement of high quantum yields, stability towards dissociation in biological media and preferably, excitation at wavelengths over 350 nm. Herein, a number of aspects regarding the sensitization of europium(III) and terbium(III) ions are discussed with respect to the design and development of novel complexes. The effect of the addition of anions such as fluoride and phosphate to the Eu(III) and Tb(III) complexes of a known tris(bipyridyl) cryptate, are

APA, Harvard, Vancouver, ISO, and other styles

43

Torelli, Daniele. "Studio delle proprieta ottiche di film di silicon oxynitrides (sion) per applicazioni fotovoltaiche." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/6282/.

Full text

Abstract:

Nelle celle solari HIT (Heterojunction Intrinsic Thin layer) attualmente in circolazione il materiale maggiormente utilizzato è sicuramente il silicio, per la sua buona caratteristica di assorbimento e disponibilità in natura. Tuttavia, la struttura amorfa del silicio impiegato come emettitore, limita fortemente la conducibilità e aumenta gli effetti di degradazione legati all'esposizione alla luce. In quest'ottica, nel presente lavoro di tesi, vengono analizzati sottili layers di Silicon Oxynitride ossigenato, depositati in forma nanocristallina presso l'Università di Costanza su substrati i

APA, Harvard, Vancouver, ISO, and other styles

44

Piazzetta, Rubyan Lucas Santos. "COMPORTAMENTO ÓPTICO E TÉRMICO EM FUNÇÃO DA ESTRUTURA DO SISTEMA VÍTREO TeO2-Li2O-ZnO." UNIVERSIDADE ESTADUAL DE PONTA GROSSA, 2015. http://tede2.uepg.br/jspui/handle/prefix/842.

Full text

Abstract:

Made available in DSpace on 2017-07-21T19:25:46Z (GMT). No. of bitstreams: 1 Rubyan Lucas Santos Piazzetta.pdf: 4250981 bytes, checksum: c1d20c3e7f1d1d4307bef8d9dee045f7 (MD5) Previous issue date: 2015-03-23<br>Fundação Araucária de Apoio ao Desenvolvimento Científico e Tecnológico do Paraná<br>This work studied tellurite glasses in a ternary system with the TeO2-Li2O-ZnO composition, divided in three groups with 10%, 15% and 20%mol Li2O fixed. For this study, was made the replacement of known TeO2 network former by ZnO. It used the Differential Scanning Calorimetry (DSC), optical absorption

APA, Harvard, Vancouver, ISO, and other styles

45

Hassan, Hassan Athab. "A GAN BASED DUAL ACTIVE BRIDGE CONVERTER TO INTERFACE ENERGY STORAGE SYSTEMS WITH PHOTOVOLTAIC PANELS." Miami University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=miami1512161344172419.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Kossmann, de Menezes Anna Carolina. "Improving predictions of operational energy performance through better estimates of small power consumption." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/13549.

Full text

Abstract:

This Engineering Doctorate aims to understand the factors that generate variability in small power consumption in commercial office buildings in order to generate more representative, building specific estimates of energy consumption. Current energy modelling practices in England are heavily focussed on simplified calculations for compliance with Building Regulations, which exclude numerous sources of energy use such as small power. When considered, estimates of small power consumption are often based on historic benchmarks, which fail to capture the significant variability of this end-use, as

APA, Harvard, Vancouver, ISO, and other styles

47

Nesselroth, Susan Marian. "I Substituent effects on carbanion photophysics An application of the energy gap law : II Solvent and geometrical constraints on excited state proton transfer." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/30331.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Ndzimandze, Samkeliso Sanele. "The synthesis and characterization of mixed-organic-cations tin halide perovskites for enhanced photovoltaic cell application." University of the Western Cape, 2018. http://hdl.handle.net/11394/6776.

Full text

Abstract:

Magister Scientiae - MSc<br>In this research, novel hybrid perovskite materials were synthesized, characterized and applied in photovoltaic cells (PVCs) to enhance the performance of PVCs. Mixed-organic-cations tin halide perovskites (MOCTPs) were successfully synthesized using sol-gel method. These MOCTPs include guanidinium dimethylammonium tin iodide ([GA][(CH3)2NH2]SnI3) and guanidinium ethylmmonium tin iodide ([GA][CH3CH2NH3]SnI3). The MOCTPs were studied in comparison to their single-organic-cation tin perovskites (SOCTPs), which include guanidinium tin iodide (GASnI3), ethylammonium tin

APA, Harvard, Vancouver, ISO, and other styles

49

Maxwell, R. M. Tompson A. F. B. Richardson J. H. El-Naser H. Rihani J. F. F. Subah A. El Sha'r W. A. Al-Hadidi Khair Al-Awamleh M. Al-Foqaha M. Abu-Eid O. Hayyaneh R. A. "Experiential Education in Groundwater Hydrology Bridging the Technical-Policy-Populace Gap Final Report." Washington, D.C : Oak Ridge, Tenn. : United States. Dept. of Energy ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2003. http://www.osti.gov/servlets/purl/15006124-edMhAR/native/.

Full text

Abstract:

Thesis; Thesis information not provided; 17 Jul 2003.<br>Published through the Information Bridge: DOE Scientific and Technical Information. "UCRL-LR-154423" Maxwell, R M; Tompson, A F B; Richardson, J H; El-Naser, H; Rihani, J. F F; Subah, A.; El Sha'r, W A; Al-Hadidi, Khair; Al-Awamleh, M; Al-Foqaha, M; Abu-Eid, O; Hayyaneh, R A. 07/17/2003. Report is also available in paper and microfiche from NTIS.

APA, Harvard, Vancouver, ISO, and other styles

50

Ling, Yiin. "Phenotyping and understanding constitutional thinness : demonstrating and understanding specific energy metabolism through overfeeding study." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSES023.

Full text

Abstract:

La maigreur constitutionnelle (MC) est un état physiologique de maigreur (13-17.5kgs/m2) sans trouble du comportement alimentaire ni dénutrition et avec conservation de l’axe gonadotrope. Dans un travail préliminaire de 4 semaines de surnutrition lipidique nous avons montré une résistance à la prise de poids chez la MC malgré un gap énergétique positif (apports supérieurs aux dépenses). La seconde étude de surnutrition a été réalisée avec un excès d’apport quotidien de 600 kcal (une bouteille de Renutryl©) afin de confirmer le gap et d’avancer vers des hypothèses mécanistiques. Nous avons d’ab

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!