1,721,195 research outputs found
Advances in high efficiency photovoltaic thermal solar collectors
No full textTwo solar energy collection systems commonly used are the flat plate collectors and
photovoltaic cells. Normally, these two collection systems are used separately. These
two systems can be combined together into one compact unit known as photovoltaic
thermal (PVT) collectors or sometimes known as hybrid collectors. These special design
solar collectors can simultaneously generate both electricity and thermal energy.
There are varieties of terrestrial applications for PVT such as building facade
integration, window integration, fence / barrier integration, parking lot integration,
and etc. The recent applications and advances on high efficiency and cost-effective
PVT collectors will be presented. These include the use of advanced heat transfer
features such as jet impingement, bifacial solar cells, extended surfaces, optical
enhancement and the use of nano fluids. Finally, the way forward for R&D in PVT
technology
A Simple Solvent−mediated Sol−gel Synthesized Nickel Oxide Hole Transport Layer for Perovskite Solar Cell Application
Get PDF金沢大学博士(工学）博士論文 要旨Abstract/本文Full 以下に掲載：Applied Physics Express 15(1) pp.15504-1-15504-5 2022. IOP Publishing. 共著者：Ersan Y Muslih, Md Shahiduzzaman, Md Akhtaruzzaman, Mohammad Ismail Hossain, LiangLe Wang, Hend I Alkhammash, Sami S Alharthi, Masahiro Nakano, Makoto Karakawa, Mohammod Aminuzzaman, Lai-Hock Tey, Kamaruzzaman Sopian, Jean-Michel Nunzi, Tetsuya Taimadoctoral thesi
Revealing High-Efficiency Perovskite Solar Cells through Advanced Electron Transport Materials and Structural Design
Get PDF金沢大学博士（工学）博士論文 要旨Abstract/要約Outline【本文Full非公開】以下に掲載：ACS Applied Materials & Interfaces 16(28) pp.36255-36271 2024. ACS (American Chemical Society). 共著者：Munkhtuul Gantumur, Mohammad Ismail Hossain, Md. Shahiduzzaman, Asman Tamang, Junayed Hossain Rafij, Md. Shahinuzzaman, Huynh Thi Cam Tu, Masahiro Nakano, Makoto Karakawa, Keisuke Ohdaira, Hamad AlMohamadi, Mohd Adib Ibrahim, Kamaruzzaman Sopian, Md. Akhtaruzzaman, Jean Michel Nunzi, Tetsuya Taimadoctoral thesi
Performance test of solar assisted solid desiccant dryer
Get PDFThe solar assisted solid desiccant dryer was designed and developed to dry agricultural product. The experiment was carried out to study the performance of the component in the dryer system and drying air condition without load. The system can produce drying air at average temperature 52oC under average solar radiation of 797 W/m2 which is suitable for heat sensitive product to maintain the fresh color, taste and nutrient content. The collector efficiency, heat exchanger effectiveness 1 and 2 was 70%, 77% and 67%, respectively. The thermal, regeneration and dehumidification effectiveness was 48%, 29% and 6%, respectively. The poor
performance of desiccant wheel may be improved by increasing the regeneration temperature above 65oC. Some improvements are still required to improve the overall performance of the system such as decrease the regeneration air flow rate, increase electrical heater power and using direct connection from the solar collector to the dryer system
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Pulsating circular air jet impingement heat transfer
Get PDFLink to publisher's homepage at http://www.myiem.org.my/The purpose of this study is to determine the effect of pulsating frequencies on the local and average heat transfer characteristics
of a heated circular air jet. Pulsation of the air jet was produced by a rotating cylinder valve mechanism at frequencies between
10 to 80 Hz. Flow stru c t u res of the heated steady and pulse single circular axisymmetric air jet velocity are measured using a
calibrated hot-wire anemometer and presented in non-dimensionalized form. Reynolds number was set at 16 000, 23 300 and 32
000. The heat flux of the heated air jet impinging on the plate was measured using a heat flux sensor at different radial positions.
Results obtained show that the average pulsed jet Nusselt number was higher than the average steady jet Nusselt number for all
values of frequencies due to the higher localised heat transfer of the pulsing jet. This was the result of enhanced turbulence
intensity due to pulsing the jet. The stagnation point heat transfer of the pulsed jet obtained was lower for the same fre q u e n c y
range due to the small turbulent intensity at this position
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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