1,949,430 research outputs found

    Application of abandoned wells integrated with renewables

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    The large thermal potentials with geothermal gradient of abandoned wells provide the possibility and opportunity for carbon-neutrality transition of district heating systems, whereas energy harvesting from abandoned geothermal wells is full of challenges, due to the considerable initial investment in economic cost, system performance degradation, and so on. In this chapter, a systematic and comprehensive review on the application techniques of abandoned wells is presented, in terms of advanced thermal/power conversions, renewable integrations for district heating, and strategies for performance enhancement. Discussions on real applications have been conducted and future prospects presented, from perspectives of lifetime system performance, techno-economic feasibility analysis, and potential assessment of abandoned wells for carbon-neutrality transition. The results of this chapter can provide preliminary knowledge and cutting-edge technologies on renewable integrations with abandoned wells, so as to demonstrate techno-economic-environmental potentials of abandoned wells and contributions toward carbon-neutrality transition.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Design & Construction Managemen

    Professor Wells: the Educational Purposes of H.G. Wells’ Works

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    reservedThis dissertation analyses the educational purposes of H.G. Wells’ works. Wells is known as one of the fathers of science fiction, and as one of the most influential writers of the late nineteenth century. However, I will not focus on H.G. Wells as an author. I will focus on H.G. Wells as a teacher. Education played a key role in the life of this remarkable author. He not only spent some of his early years working as a teacher, but he also wrote a textbook meant for biology students. Furthermore, in the later stages of his life Wells actively advocated for the need to reform the British school system, introducing scientific subjects in the school curricula. He also dedicated himself to writing popularizing articles about scientific topic. The strong connection between Herbert George Wells and education is, to me, quite evident. Every chapter of this work will focus on a different work written by Wells. I chose to follow on some of his most famous works: The Island of Doctor Moreau (1896), The Time Machine (1895), and The World of the Worlds (1898). Here, I will analyse the content of each work, trying to point out the educational narrative proposed by Wells. I am not proposing anything new as far as the interpretation of these works is concerned. In order to carry out my researches for the dissertation, I attentively read many essays and articles that proposed an interpretation of Wells’ texts. Among the authors I refer to, there are authoritative Wells’ scholars such as Patrick Parrinder. The purpose of the work is not providing a new interpretation of the themes and motifs behind H.G. Wells’ works, but demonstrating that these books had been written in order to teach something to their reading public. The last chapter focuses on Wells’ utopian novel A Modern Utopia (1905). It is different from the others because I will not limit myself to describing the educational purposes of the book. A Modern Utopia is a programmatic text, and this gave me the possibility to have a closer look at Wells’ beliefs and plans for society. As I propose in the fifth chapter, some of his views would be considered completely unacceptable by modern-day readers. I focus on two specific topics. First, I will take into exam the treatment received by criminals, feeble-minded, drunkards, and other sorts of people considered “undesirable” by the Victorians. And then I focus on the role of the woman in the utopian state imagined by Wells. As I will discuss, Wells’ ideas were far from progressive as far as these topics were concerned. Or, at least, they could not be considered progressive nowadays. The final chapter is not a way to stigmatise Wells. Rather, it is a way to contextualise both the man and his works. As I propose, contextualising Wells is the only way to truly appreciate the innovative contributions of his works.This dissertation analyses the educational purposes of H.G. Wells’ works. Wells is known as one of the fathers of science fiction, and as one of the most influential writers of the late nineteenth century. However, I will not focus on H.G. Wells as an author. I will focus on H.G. Wells as a teacher. Education played a key role in the life of this remarkable author. He not only spent some of his early years working as a teacher, but he also wrote a textbook meant for biology students. Furthermore, in the later stages of his life Wells actively advocated for the need to reform the British school system, introducing scientific subjects in the school curricula. He also dedicated himself to writing popularizing articles about scientific topic. The strong connection between Herbert George Wells and education is, to me, quite evident. Every chapter of this work will focus on a different work written by Wells. I chose to follow on some of his most famous works: The Island of Doctor Moreau (1896), The Time Machine (1895), and The World of the Worlds (1898). Here, I will analyse the content of each work, trying to point out the educational narrative proposed by Wells. I am not proposing anything new as far as the interpretation of these works is concerned. In order to carry out my researches for the dissertation, I attentively read many essays and articles that proposed an interpretation of Wells’ texts. Among the authors I refer to, there are authoritative Wells’ scholars such as Patrick Parrinder. The purpose of the work is not providing a new interpretation of the themes and motifs behind H.G. Wells’ works, but demonstrating that these books had been written in order to teach something to their reading public. The last chapter focuses on Wells’ utopian novel A Modern Utopia (1905). It is different from the others because I will not limit myself to describing the educational purposes of the book. A Modern Utopia is a programmatic text, and this gave me the possibility to have a closer look at Wells’ beliefs and plans for society. As I propose in the fifth chapter, some of his views would be considered completely unacceptable by modern-day readers. I focus on two specific topics. First, I will take into exam the treatment received by criminals, feeble-minded, drunkards, and other sorts of people considered “undesirable” by the Victorians. And then I focus on the role of the woman in the utopian state imagined by Wells. As I will discuss, Wells’ ideas were far from progressive as far as these topics were concerned. Or, at least, they could not be considered progressive nowadays. The final chapter is not a way to stigmatise Wells. Rather, it is a way to contextualise both the man and his works. As I propose, contextualising Wells is the only way to truly appreciate the innovative contributions of his works

    Wells futurologo

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    Una lettura critica del saggio di H.G Wells "La scoperta del futuro" con cui l'autore di letteratura di fantascienza definisce i caratteri di una nuova disciplina che alcuni decenni più tardi si sarebbe chiamata Futurologia.A critical reading of the essay by H.G Wells "The discovery of the future" with which the author of science fiction literature defines the characteristics of a new discipline that a few decades later would be called Futurology

    A map of the County of Cumberland in the Colony of New South Wales [cartographic material] /

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    Cadastral map of the County of Cumberland, including Sydney.; Map 17 from Ferguson Collection.; Vignette of W.H. Wells' family crest.; Also available in an electronic version via the Internet at: http://nla.gov.au/nla.map-f17

    Dig for the digger [music] /

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    For voice and piano.; Caption title.; "Dedicated to the Women's Peace Loan Committee by the author, John K. Wells"--Cover.; Also available online http://nla.gov.au/nla.mus-vn3291520

    Spin relaxation and carrier recombination in GaInNAs multiple quantum wells

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    Electron spin relaxation and carrier recombination were investigated in gallium indium nitride arsenide (GaInNAs) multiple quantum wells, using picosecond optical pulses. Pump-probe experiments were carried out at room temperature, using pulses produced by a Ti:sapphire pumped optical parametric oscillator. The peak wavelengths of the excitonic resonances for the quantum well samples were identified using linear absorption measurements, and were found to be in the range 1.25µm-1.29µm. Carrier recombination times were measured for three samples of varying nitrogen content, and were observed to decrease from 548 to 180ps as nitrogen molar fractions were increased in the range 0.45-1.24%. Carrier recombination times were also measured for samples which had undergone a post-growth annealing process, and were found to be signicantly shorter compared to times measured for as-grown samples. Electron spin relaxation time was investigated for samples with quantum well widths in the range 5.8-8nm, and was found to increase with increasing well width, (i.e. decreasing quantum confinement energy), a trend predicted by both D'Yakonov-Kachorovskii and Elliott-Yafet models of spin relaxation in quantum wells. In a further study, longer spin relaxation times were exhibited by samples containing higher molar fractions of nitrogen, but having nominally constant quantum well width. Spin relaxation times increased from 47ps to 115ps for samples containing nitrogen concentrations in the range 0.45-1.24%. Decreases in spin relaxation time were observed in the case of those samples which had been annealed post-growth, compared to as-grown samples. Finally, all-optical polarisation switching based on spin relaxation of optically generated carriers in GaInNAs multiple quantum wells was demonstrated

    Wells Family

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    "Peter Wells Doreen McKie (Wells) Edward Wells - Mrs E.M. Wells "Koolinda" 19.12.41 - Mr F.E. Wells.

    Re(sounding) holy wells

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    (Re)sounding holy wells was an artistic and cultural heritage project to imaginatively explore holy wells in Cork through workshops, audio recordings, and oral histories.(Re)sounding holy wells was an artistic and cultural heritage project led by Vicky Langan, independent artist, and Dr Richard Scriven, Department of Geography, UCC, to imaginatively explore holy wells in Cork through workshops, audio recordings, and oral histories. It blended contemporary artistic production and cultural heritage in an active and community focused style. Using a collaborative approach with both primary schools and community heritage groups, the project examined and highlighted the roles of holy wells as cultural amenities and sites of vernacular heritage. Through creative workshops, students and local residents shared their accounts of holy wells, focusing on oral history, spoken non-fiction, and photographs/drawings. Primary school classes made audio recordings and took photos at the wells. Fresh understandings of the wells were produced through the use of audio by combining field recordings with accounts of the holy wells from young people and community members

    Academic Year 1921

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    Yearbook for Mineral Wells High School in Mineral Wells, Texas includes photos of and information about the school, student body, teachers, and organizations
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