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Rambutan-like morphology of NiO as a potential high-performance supercapacitor electrode

AIP Conference Proceedings 2024年第1期3026卷

作者： Siti Wihdatul Himmah Ni Luh Wulan Septiani Shofarul Wustoni Ahmad Nuruddin Brian Yuliarto Doctoral Program of Engineering Physics Faculty of Industrial Technology Institut Teknologi Bandung Bandung 40132 Indonesia. Advanced Functional Materials Research Group Faculty of Industrial Technology Institut Teknologi Bandung Bandung 40132 Indonesia. Research Center for Advanced Materials National Research and Innovation Agency (BRIN) Komplek Puspiptek South Tangerang 15314 Banten. Biological and Environmental Science and Engineering King Abdullah University of Science and Engineering Thuwal 23955-6900 Saudi Arabia. Research Center for Nanosciences and Nanotechnology (RCNN) Institute Technology Bandung (ITB) Bandung 40132 Indonesia.

Nickel oxide (NiO)-based supercapacitor electrodes have attracted great attention due to the ultra-high theoretical specific capacitance. NiO, as a typical pseudocapacitive, is considered to be the most promising candidate as an electrode material for supercapacitors. Herein, the NiO nanostructures directly grown on the Ni foam have been successfully designed and synthesized via the hydrothermal method. The optimal Ni foam/NiO electrode exhibits a high specific capacity of 93.2 C/g at a current density of 5 mV/s. The enhanced electrochemical performance of Ni foam/NiO electrodes is due to the unique morphological architecture which facilitates open access and promotes electrolyte ion/electron transport.

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Fabrication of silica-nypa membrane applied for water desalination

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AIP Conference Proceedings 2024年第1期2710卷

作者： Muthia Elma Isna Syauqiah Era N. R. Oktaviana Siti Fatimah Aulia Rahma Awali Sir Kautsar Harivram Erdina L. A Rampun Chemical Engineering Department Engineering Faculty Lambung Mangkurat University JL. A. Yani KM 36 Banjarbaru South Kalimantan 70714 Indonesia Materials and Membranes Research Group (M2ReG) Lambung Mangkurat University JL. A.Yani KM 36 Banjarbaru South Kalimantan 70714 Indonesia Doctoral Program of Environmental Science postgraduate Program Lambung Mangkurat University Jl. Brigjen H Hasan Basri Kayutangi Banjarmasin South Kalimantan 70123 Indonesia

Carbon source as a template derived from nypa leaf powder enable to strengthen the silica matrix applied for water desalination. This research aims to synthesize silica-nypa membrane, characterize xerogel silica-nypa leaf and investigate the performance of silica-nypa membrane with various concentration of nypa as a carbon template to treat artificial sea water. The concentrations of nypa leaf as a carbon template are 0.1; 0.5 and 2.5 %wt with a calcination temperature of 350 °C through a rapid thermal processing (RTP) technique. Xerogel characterization using FTIR was employed to analyze a spectrum and Scanning Electron Microscopy (SEM) to investigate the membrane morphology. The result shows that the performance of silica-nypa membrane with water fluxes of 2.1915; 2.0163 and 1.1067 kg.m−2. h−1 (for 0.1; 0.5 and 2.5 %wt. carbon template derived from nypa leaf), and the salt rejection value for all concentrations.

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Reverse electrodialysis membrane for harvesting salinity gradient energy with and without spacer under natural wetland water

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AIP Conference Proceedings 2023年第1期2932卷

作者： Muthia Elma Dwi Resa Lamandau Siti Fatimah Satria Anugerah Suhendra Aulia Rahma Department of Chemical Engineering Faculty of Engineering Lambung Mangkurat University Jl. A. Yani KM 36 Banjarbaru 70714 Indonesia Materials and Membranes Research Group (M2ReG) Lambung Mangkurat University Jl. A. Yani KM 36 Banjarbaru 70714 Indonesia Environmental Science Doctoral and Postgraduate Program Lambung Mangkurat University Jl. Brigjen H. Hasan Basry Banjarmasin 70123 Indonesia

Salinity gradient energy (SGE) allows two solutions with different salt concentration to mixing and directly into electrical energy by reverse electrodialysis (RED) membrane. High power outputs are forecasted theoretically, but in real practice is still relatively low RED power efficiency. In this work, the spacer shadow effects on both membrane and solution compartment resistances are investigated by employing nylon spacer and without spacer. In addition, this experiment also proposes the power density performance of RED membrane under natural wetland water as low saline solution and variation of high saline solution i.e., artificial brackish water (0.3 wt% NaCl) and artificial seawater (3.5 wt% NaCl). The results indicate that the spacer shadow effect on RED membrane has a correlation with energy output generated. The used of spacer led to an increase in stack resistance and decrease in power density compared to without nylon spacer. This result increases the impact of RED renewable power source and brings it closer to practical implementation, especially for the potential natural wetland water as low saline solution. The power output was computed, obtaining a maximum power density of 0.19 W/m2 with variations without spacers, and 0.14 W/m2 with spacers. Results show that of the cell components directly influences the physicochemical principles governing the RED process and is closely related to the cell output parameters. In turn, it is possible to increase the performance of a RED cell by optimizing operation without spacers to avoid the shadow effect.

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From Dissemination to Propagation: A New Paradigm for Education Developers

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Change 2017年第4期49卷 35-42页

作者： Froyd, Jeffrey E. Henderson, Charles Cole, Renée S. Friedrichsen, Debra Khatri, Raina Stanford, Courtney Jeffrey E. Froyd is a Research Professor at Texas A&M University. His research interests include sustained adoption of improvements in learning and teaching systematic reviews in engineering education evaluation of faculty campus climates and assessment of complex learning outcomes. Charles Henderson is a Professor at Western Michigan University with a joint appointment between the Department of Physics and the Mallinson Institute for Science Education. His research focuses on promoting productive changes in higher education at the individual department institution and national levels. Renée S. Cole is an Associate Professor of Chemistry at the University of Iowa. She teaches introductory and advanced courses in chemistry and runs a research program focused on the design and assessment of instructional materials and teaching strategies and faculty professional development. Debra Friedrichsen founded and operates a small consulting company. She received her Ph.D. from Oregon State University in Chemical Engineering with a dissertation focused on engineering education. Debra also has a MBA a MS and a patent for sensor development. Raina Khatri is a doctoral student in the Mallinson Institute for Science Education at Western Michigan University. Her research focus is understanding how education developers in STEM can promote sustained adoption of their innovations. Courtney Stanford is a postdoctoral researcher in the Department of Chemistry at Virginia Commonwealth University. Her current research focuses on the identification development and assessment of process skills (also known as professional skills) in active learning undergraduate STEM classrooms.

Scholarly studies and national reports document failure of current efforts to achieve broad, sustained adoption of research-based instructional practices, despite compelling bodies of evidence supporting efficacy of many of these practices. The authors of this paper argue that many change agents who are working to promote systemic adoption of these teaching practices use approaches that are characterized by what the authors call the "dissemination paradigm." A dissemination paradigm characterizes patterns of these current, failing efforts. Change agents, working within the dissemination paradigm, try to convince adopters that their innovations can help their students. Efforts within the dissemination paradigm have not led, and are unlikely to lead, to systemic adoption. The authors offer the "propagation paradigm" as an alternative with the potential to produce improved results. Change agents, working within the propagation paradigm, engage with adopters early and often to understand their instructional systems and interactively develop a strong product adaptable to specific contexts.

关键词： Models Change Agents Teaching Methods Information Dissemination Educational Innovation Instructional Systems STEM Education Comparative Analysis

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Surface modification of yttria-stabilized tetragonal zirconia with different glass based liners

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Dental materials 2016年 32卷 e95-e96页

作者： D. Silva-Herzog Rivera D. Masuoka-Ito L.O. Sanchez-Vargas J.L. Menchaca-Arredondo A. Aragón-Piña B.I. Cerda-Cristerna Institutional Doctoral Program of Engineering and Materials Science Universidad Autónoma De San Luis Potosí México Mexico Dentistry Department Universidad Autónoma De Aguascalientes México Mexico Faculty of Physics and Mathematics Universidad Autónoma De Nuevo León México Mexico Research Center and Post-Graduate Studies Universidad Autónoma De San Luis Potosí México Mexico Faculty of Dentistry Río Blanco Universidad Veracruzana-Región Córdoba-Orizaba México Mexico

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Application of high temperature superconducting wire to magnetostrictive transducers for underwater sonar

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NAVAL ENGINEERS JOURNAL 1997年第1期109卷 31-39页

作者： Joshi, CH Lindberg, JF Clark, AE Dr. Chad H. Joshi:is president of Energen Incorporated an engineering and development firm specializing in cryogenic and electromechanical systems. The research presented here was conducted while he was employed at American Superconductor Coporation where he held both technical and program management positions. While there Dr. Joshi managed the development of several demonstration products including the sonar transducer presented here. He holds M.S. and Sc.D. degreesfrom the Massachusetts Institute of Technology and a B.S. degree from the Worcester Polytechnic Institute. He has worked in several diverse fields including solar energy fluidized bed technology and superconductivity. His work on stochastic analysis of solar insolation was recognized by the ASME and his doctoral research was accorded international recognition for its unique contribution to understanding quenching in superconducting magnets. Dr. Joshi has numerous patents and more than thirty-five technical publications to his credit. He is a registered Professional Engineer in Massachusetts and an active member of ASME and IEEE. He is a co-founder and treasurer of the New England Chapter of the Cryogenics Society of America. He will be listed in Whos Who in the East in 1997. Jan Lindberg:is a physicist in the Transducers and Arrays Division of the Naval Undersea Warfare Center in New London Connecticut. He leads NUWC'S exploratory development efforts for transduction science and currently is spearheading an effort to introduce high-energy density active materials into tactical sonar systems. With the discovery of high temperature superconductivity he saw the potential benefit of integrating several emerging technologies and enticed American Superconductor Corp. to develop a high temperature superconducting transducer which resulted in the March 1993 demonstration of the world's first integrated high temperature superconducting device. Mr. Lindberg's current interests involve design of high power ultrasonic copolymer arrays characterization of

A low-frequency underwater acoustic transducer integrating high-temperature superconducting (HTS) coils and terbium-dysprosium (TbDy) magnetostrictive material was designed, fabricated and tested. This represents a novel application for high-temperature superconductivity and is a first example of an integrated system involving HTS coils cooled by a mechanical cryocooler. It also brings HTS technology together with a novel magnetic materials technology. The I-ITS coils were fabricated using react-and-wind BiSrCaCuO-2223 HTS wires. They produce a peak field of 0.1 Tesla at 50 K. A single-stage, Stirling-cycle cryocooler was used to cool the coils and the TbDy driver to cryogenic temperatures (50-65K). The coils provide an AC magnetic field superimposed on a DC bias field, which produces oscillatory strain within the magnetostrictive rod;this motion is transmitted through a cryostat to two head masses which project sound into the surrounding environment. High power acoustic output can be obtained by operating the transducer at its resonance frequencies of 520 Hz in air and 430 Hz underwater. This development demonstrates that, unlike low temperature superconductors, HTS wires can be considered for AC applications due to the low losses in these superconductors and the higher heat capacities of materials at temperatures above liquid helium.

关键词： Underwater equipment

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Body appreciation around the world: Measurement invariance of the Body Appreciation Scale-2 (BAS-2) across 65 nations, 40 languages, gender identities, and age

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Body image 2023年 46卷 449-466页

作者： Viren Swami Ulrich S Tran Stefan Stieger Toivo Aavik Hamed Abdollahpour Ranjbar Sulaiman Olanrewaju Adebayo Reza Afhami Oli Ahmed Annie Aimé Marwan Akel Hussam Al Halbusi George Alexias Khawla F Ali Nursel Alp-Dal Anas B Alsalhani Sara Álvares-Solas Ana Carolina Soares Amaral Sonny Andrianto Trefor Aspden Marios Argyrides John Jamir Benzon R Aruta Stephen Atkin Olusola Ayandele Migle Baceviciene Radvan Bahbouh Andrea Ballesio David Barron Ashleigh Bellard Sóley Sesselja Bender Kerime Derya Beydağ Gorana Birovljević Marie-Ève Blackburn Teresita Borja-Alvarez Joanna Borowiec Miroslava Bozogáňová Solfrid Bratland-Sanda Matthew H E M Browning Anna Brytek-Matera Marina Burakova Yeliz Çakır-Koçak Pablo Camacho Vittorio Emanuele Camilleri Valentina Cazzato Silvia Cerea Apitchaya Chaiwutikornwanich Trawin Chaleeraktrakoon Tim Chambers Qing-Wei Chen Xin Chen Chin-Lung Chien Phatthanakit Chobthamkit Bovornpot Choompunuch Emilio J Compte Jennifer Corrigan Getrude Cosmas Richard G Cowden Kamila Czepczor-Bernat Marcin Czub Wanderson Roberto da Silva Mahboubeh Dadfar Simon E Dalley Lionel Dany Jesus Alfonso D Datu Pedro Henrique Berbert de Carvalho Gabriel Lins de Holanda Coelho Avila Odia S De Jesus Sonia Harzallah Debbabi Sandesh Dhakal Francesca Di Bernardo Donka D Dimitrova Jacinthe Dion Barnaby Dixson Stacey M Donofrio Marius Drysch Hongfei Du Angel M Dzhambov Claire El-Jor Violeta Enea Mehmet Eskin Farinaz Farbod Lorleen Farrugia Leonie Fian Maryanne L Fisher Michał Folwarczny David A Frederick Matthew Fuller-Tyszkiewicz Adrian Furnham Antonio Alías García Shulamit Geller Marta Ghisi Alireza Ghorbani Maria Angeles Gomez Martinez Sarah Gradidge Sylvie Graf Caterina Grano Gyöngyvér Gyene Souheil Hallit Motasem Hamdan Jonathan E Handelzalts Paul H P Hanel Steven R Hawks Issa Hekmati Mai Helmy Tetiana Hill Farah Hina Geraldine Holenweger Martina Hřebíčková Olasupo Augustine Ijabadeniyi Asma Imam Başak İnce Natalia Irrazabal Rasa Jankauskiene Ding-Yu Jiang Micaela Jiménez-Borja Verónica Jiménez-Borja Evan M Johnson Veljko Jov School of Psychology and Sport Science Anglia Ruskin University Cambridge United Kingdom Centre for Psychological Medicine Perdana University Kuala Lumpur Malaysia. Electronic address: viren.swami@aru.ac.uk. Department of Cognition Emotion and Methods in Psychology Faculty of Psychology University of Vienna Vienna Austria. Department of Psychology and Psychodynamics Karl Landsteiner University of Health Sciences Krems an der Donau Austria. Institute of Psychology University of Tartu Tartu Estonia. Department of Psychology Koç University Istanbul Turkiye. Department of Psychology and Behavioural Studies Ekiti State University Ado-Ekiti Nigeria. Department of Art Studies Tarbiat Modares University Tehran Iran. Department of Psychology University of Chittagong Chattogram Bangladesh. Department of Psychoeducation and Psychology Université du Québec en Outaouais Saint-Jérôme Canada. INSPECT-LB: National Institute of Public Health Clinical Epidemiology and Toxicology Beirut Lebanon School of Pharmacy Lebanese International University Beirut Lebanon. Department of Management Ahmed Bin Mohammad Military College Doha Qatar. Faculty of Psychology Panteion University of Social and Political Sciences Athens Greece. Royal College of Surgeons Ireland-Bahrain Adliya Bahrain. Department of Midwifery Faculty of Health Sciences Munzur University Tunceli Turkiya. Department of Oral Medicine and Diagnostic Sciences Vision College of Dentistry and Nursing Vision Colleges Riyadh Saudi Arabia. Facultad de Ciencias de la Vida Universidad Regional Amazónica Ikiam Muyuna Ecuador. Federal Institute of Education Science and Technology of Southeast Minas Gerais Barbacena Brazil. Department of Psychology Universitas Islam Indonesia Yogyakarta Indonesia. Department of Psychology Aberystwyth University Ceredigion United Kingdom. Department of Psychology Neapolis University Pafos Paphos Cyprus. Department of Psychology De La Salle University Phillippines. Department of Gen

The Body Appreciation Scale-2 (BAS-2) is a widely used measure of a core facet of the positive body image construct. However, extant research concerning measurement invariance of the BAS-2 across a large number of nations remains limited. Here, we utilised the Body Image in Nature (BINS) dataset - with data collected between 2020 and 2022 - to assess measurement invariance of the BAS-2 across 65 nations, 40 languages, gender identities, and age groups. Multi-group confirmatory factor analysis indicated that full scalar invariance was upheld across all nations, languages, gender identities, and age groups, suggesting that the unidimensional BAS-2 model has widespread applicability. There were large differences across nations and languages in latent body appreciation, while differences across gender identities and age groups were negligible-to-small. Additionally, greater body appreciation was significantly associated with higher life satisfaction, being single (versus being married or in a committed relationship), and greater rurality (versus urbanicity). Across a subset of nations where nation-level data were available, greater body appreciation was also significantly associated with greater cultural distance from the United States and greater relative income inequality. These findings suggest that the BAS-2 likely captures a near-universal conceptualisation of the body appreciation construct, which should facilitate further cross-cultural research.

关键词： Body appreciation Body appreciation Scale-2 (BAS-2) Cross-cultural Measurement invariance Multi-group confirmatory factor analysis (MG-CFA) Psychometrics Structural analysis

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