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A public Cloud-based China's Landslide Inventory Database(Cs LID): development, zone, and spatiotemporal analysis for significant historical events, 1949-2011

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Journal of Mountain science 2016年第7期13卷 1275-1285页

作者： LI Wei-yue LIU Chun HONG Yang ZHANG Xin-hua WAN Zhan-ming Manabendra SAHARIA SUN Wei-wei YAO Dong-jing CHEN Wen CHEN Sheng YANG Xiu-qin YUE Jing Institute of Urban Study Shanghai Normal University Center for Spatial Information Science and Sustainable Development Applications Tongji University College of Surveying and Geo-Informatics Tongji University School of Civil Engineering and Environmental Sciences University of Oklahoma Advanced Radar Research Center University of Oklahoma State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan University College of Architectural Engineering Civil Engineering and Environment Ningbo University Department of Geography Shanghai Normal University Engineering Center of SHMEC for Space Information and GNSS East China Normal University Applied Hydrometeorological Research Institute Nanjing University of Information Science & Technology Department of Stomatology Shanghai Tenth People’s Hospital of Tongji University

Landslide inventory plays an important role in recording landslide events and showing their temporal-spatial distribution. This paper describes the development, visualization, and analysis of a China's Landslide Inventory Database(Cs LID) by utilizing Google's public cloud computing platform. Firstly, Cs LID(Landslide Inventory Database) compiles a total of 1221 historical landslide events spanning the years 1949-2011 from relevant data sources. Secondly, the Cs LID is further broken down into six zones for characterizing landslide cause-effect, spatiotemporal distribution, fatalities, and socioeconomic impacts based on the geological environment and terrain. The results show that among all the six zones, zone V, located in Qinba and Southwest Mountainous Area is the most active landslide hotspot with the highest landslide hazard in China. Additionally, the Google public cloud computing platform enables the Cs LID to be easily accessible, visually interactive, and with the capability of allowing new data input to dynamically augment the database. This work developed a cyber-landslide inventory and used it to analyze the landslide temporal-spatial distribution in China.

关键词： Landslide Inventory Zone Distribution Cloud computing

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Nitrogen-doped carbonaceous electrode modified by biological metal-organic framework for vanadium redox flow batteries

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Surface and Coatings technology 2024年 480卷

作者： Ou, Yun-Ting Kabtamu, Daniel Manaye Lakshmanan, Keseven Chen, Guan-Cheng Huang, Zih-Jhong Hsu, Ning-Yih Ku, Hung-Hsien Wang, Yao-Ming Wang, Chen-Hao Department of Materials Science and Engineering National Taiwan University of Science and Technology Taipei106335 Taiwan Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei106335 Taiwan Chemistry Division National Atomic Research Institute Taoyuan325207 Taiwan Maritime Innovation & Industry Promotion Department Metal Industries Research & Development Centre Kaohsiung811160 Taiwan Advanced Manufacturing Research Center National Taiwan University of Science and Technology Taipei106335 Taiwan

The biological metal-organic framework (Bio-MOF) is utilized to modify the carbonaceous electrode for the vanadium redox flow batteries. The microwave solvothermal method prepared the cobalt-based Bio-MOF on a graphite felt (GF) surface. Then, the nitrogen-doping graphite and porous structure formation were completed simultaneously during the carbonization process. Finally, electrochemical activation was conducted to remove cobalt metal from the GF electrode and raise the concentration of oxygen-containing functional group active sites. By in-situ Raman spectroscopy, the increase of disordered graphitic lattices could be observed by raising the potential from 0.6 V to 1.6 V. The microwave solvothermal method and electrochemical activation can effectively shorten the treatment time compared with the traditional solvothermal method and acidic etching processes. Among the carbonization parameters for Bio-MOF-covered GFs, maintaining the temperature at 900 °C for 2 h under an argon atmosphere is the most suitable. The annealed sample after electrochemical activation (BMDGF-900EA) displays 73.7 % energy efficiency at 120 mA cm−2 and possesses a 90 % retention rate of efficiency after 250 cycles at 180 mA cm−2. The superior performance results from more catalytic active sites, hydrophilic surface features, and larger specific surface area prove that this modification method derived from Bio-MOF indeed provides a novel and potential way to improve the VRFB performance. © 2024

关键词： Carbonization

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Numerical analysis of the thermal and electrical performance of concentrated photovoltaic systems integrated with multiple phase change materials

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Case Studies in Thermal Engineering 2025年 72卷

作者： Atef Chibani Slimane Merouani Riad Badji Farhan Lafta Rashid Mohamed Kezzar Sahar Ahmed Idris Mohamed Rafik Sari B. Rushi Kumar Sunitha Nagarathnam Research Center in Industrial Technologies CRTI P.O.Box 64 Cheraga 16014 Algiers Algeria Laboratory of Environmental Process Engineering Department of Chemical Engineering Faculty of Process Engineering University Salah Boubnider-Constantine 3 P.O. Box 72 25000 Constantine Algeria Petroleum Engineering Department University of Kerbala Karbala 56001 Iraq Materials and Energy Engineering Laboratory (LMGE) Technology Department Faculty of Technology 20 Aout 1955 University of Skikda PO Box 26 21000 Skikda Algeria College of Science Department of Mathematics King Khalid University Abha Saudi Arabia Mechanics of Materials and Plant Maintenance Research Laboratory (LR3MI) Mechanical Engineering Department Faculty of Engineering Badji Mokhtar University of Annaba (UBMA) PO Box 12 23052 Annaba Algeria Department of Mathematics School of Advanced Sciences Vellore Institute of Technology Vellore Tamil Nadu India Centre for Research in Computational and Applied Mechanics University of Cape Town Rondebosch 7701 South Africa

Great attention has been paid to the improvement of the efficiency of photovoltaic (PV) systems and their profit due to the constantly growing demand for effective energy solutions. The rise of the demands for efficient energy solutions in terms of environmental influence needed much concern to make solar (PV) systems work better, especially in the hot climates where huge ambient temperature influences the efficacy of PV systems. This paper examines the use of multi-layered phase change materials (PCMs) in parallel arrangement for PV thermal control to lower the temperature increase and enhance the energy production. The study uses a numerical method to compare and determine the thermal efficiency of PV systems deployed at different angles (0, 30, 45, 75 and 90°) on the PCM's freezing and melting behavior. The usage of multi-layered phase change materials has been demonstrated to effectively reduce the surface temperature of photovoltaic panels by as much as 25 °C, thereby leading to a significant enhancement of electrical efficiency by about 5.18 %. Hence, the study of the liquid fraction contours resulting from the heat transfer operation discloses that a greater tilt angle promotes faster and more effective melting of the PCM. Other maps presenting temperature contours also emphasize that steeper angles result in lower maximum temperatures and small thermal gradients inside the PCM, which are essential to support the required operation conditions.

关键词： Photovoltaic (PV) systems Tilt angles Phase change materials (PCM) Cooling PCM melting Energy saving

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Effects of surface roughness and chemical species on hydrophilicity of anodized film on Ti-6AL-4V formed at a low current density

Effects of surface roughness and chemical species on hydroph...

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2012 International Conference on Environmental and Materials Engineering, EME 2012

作者： Whangdee, Phanawan Chukasorn, Siritida Srimaneepong, Viritpon Watanabe, Tomoaki Kashima, Dujreutai Pongkao Research Unit of Advanced Ceramics Department of Materials Science Chulalongkorn University Patumwan Bangkok 10330 Thailand Center of Excellence on Petrochemical and Materials Technology Chulalongkorn University Patumwan Bangkok 10330 Thailand Unit Cell for Research and Development of Herbs and Natural Products for Dental Application Chulalongkorn University Patumwan Bangkok 10330 Thailand Department of Prosthetic Dentistry Chulalongkorn University Patumwan Bangkok 10330 Thailand Department of Applied Chemistry School of Science and Technology Meiji University Higashi-mita Tama-ku Kawasaki 214-8571 Japan

ISBN: (纸本)9783037856017

Anodization of Ti-6Al-4V is crucial for dental implants because it promotes the roughness, chemical species and hydrophilicity of the surface that leads to its biocompatibility. The anodized film was prepared by the galvanostatic method at a low current density in either 1 M H3PO4 or 1 M NaOH as the electrolyte. The as-anodized film showed a significant decrease in the water contact angle, likely to be due to an increased surface roughness (as revealed by scanning electron and atomic force microcopy) and change in the surface species (as revealed by X-ray photoelectron spectroscopy, XPS). XPS analyses confirmed that the Ti2p spectra scarcely changed while the O1s spectra significantly changed due to Ti-OH bonding. Moreover, the O/Ti ratio of the as-anodized film was increased. The results suggest that anodization by the galvanostatic method at a low current density in 1 M H3PO4or 1 M NaOH could enhance the surface roughness and chemical surface species, and that both are likely to be important factors for enhancing the hydrophilicity of the anodized films. © (2013) Trans Tech Publications, Switzerland.

关键词： Surface roughness

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Eco-friendly fabrication of CdO nanoparticles using Polyalthia longifolia leaves extract for antibacterial and electrochemical sensing studies

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Journal of Sol-Gel science and technology 2024年第1期110卷 221-232页

作者： Ghotekar, Suresh Ravikumar, C.R. Chauhan, Ankush Hikku, G.S. Lin, Kun-Yi Andrew Rahdar, Abbas Hitler, Louis Jabir, Majid S. Marzban, Abdolrazagh Oza, Rajeshwari Centre for Herbal Pharmacology and Environmental Sustainability Chettinad Hospital and Research Institute Chettinad Academy of Research and Education Tamil Nadu Kelambakkam603103 India Research Centre Department of Chemistry East West Institute of Technology Bengaluru560091 India Faculty of Allied Health Sciences Chettinad Hospital and Research Institute Chettinad Academy of Research and Education Tamil Nadu Kelambakkam603 103 India Institute of Analytical and Environmental Sciences National Tsing Hua University Hsinchu Taiwan Department of Environmental Engineering & amp Innovation and Development Center of Sustainable Agriculture National Chung Hsing University 250 Kuo-Kuang Road Taichung Taiwan Department of Physics Faculty of Science University of Zabol Zabol35856-98613 Iran Computational and Bio-Simulation Research Group University of Calabar Calabar Nigeria Department of Applied Science University of Technology Baghdad Iraq Razi Herbal Medicines Research Center Lorestan University of Medical Sciences Khorramabad Iran Savitribai Phule Pune University Maharashtra Sangamner422 605 India

Abstract: The present work reported the eco-benevolent fabrication of cadmium oxide nanoparticles (CdO NPs) utilizing the leaf extract of Polyalthia longifolia as the biofuel for the first time. CdO NPs were fabricated employing the green approach, and physicochemical traits of the as-fabricated CdO NPs were revealed by X-ray diffraction (XRD), Fourier transforms infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM), zeta potential, and Brunauer–Emmett–Teller (BET) analyses. Results demonstrated that the CdO NPs appeared to be wire and spherical-shaped topology with a size of 42 nm, as confirmed by FESEM and XRD. The biological property of CdO NPs was examined as an antibacterial agent against Bacillus subtilis, Escherichia coli, Staphylococcus aureus, and Proteus mirabilis. Moreover, the chemical features of CdO NPs were evaluated as a glucose/dextrose sensor for electrochemical sensing. From the outcomes, the eco-benignly produced CdO NPs served the role of a bio-sensor and antibacterial agent and can be an attractive choice for applications in the advanced biomedical sector. Graphical Abstract: (Figure presented.) © The Author(s), under exclusive licence to Springer science+Business Media, LLC, part of Springer Nature 2024.

关键词： Glucose

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Gene expression profiles of hepatic cell-type specific marker genes in progression of liver fibrosis

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World Journal of Gastroenterology 2006年第40期12卷 6473-6499页

作者： Yoshiyuki Takahara Mitsuo Takahashi Hiroki Wagatsuma Fumihiko Yokoya Qing-Wei Zhang Mutsuyo Yamaguchi Hiroyuki Aburatani Norifumi Kawada Exploratory and Applied Pharmaceutical Research Department Pharmaceutical Company Ajinomoto Co. Inc Kawasaki 210-8681 Japan Biochemical Information project BiolT Business Development Group Fujitsu Limited Tokyo Japan Center for Collaborative Research Research Center for Advanced Science and Technology the University of Tokyo Tokyo Japan Department of Hepatology Graduate School of Medicine Osaka City University Osaka Japan

AIM: To determine the gene expression profile data for the whole liver during development of dimethylni-trosamine (DMN)-induced hepatic ***: Marker genes were identified for different types of hepatic cells, including hepatic stellate cells (HSCs), Kupffer cells (including other inflammatory cells), and hepatocytes, using independent temporal DNA microarray data obtained from isolated hepatic cells. RESULTS: The cell-type analysis of gene expression gave several key results and led to formation of three hypotheses: (1) changes in the expression of HSC-specific marker genes during fibrosis were similar to gene expression data in in vitro cultured HSCs, suggesting a major role of the self-activating characteristics of HSCs in formation of fibrosis; (2) expression of mast cell-specific marker genes reached a peak during liver fibrosis, suggesting a possible role of mast cells in formation of fibrosis; and (3) abnormal expression of hepatocyte-specific marker genes was found across several metabolic pathways during fibrosis, including sulfur-containing amino acid metabolism, fatty acid metabolism, and drug metabolism, suggesting a mechanistic relationship between these abnormalities and symptoms of liver fibrosis. CONCLUSION: Analysis of marker genes for specific hepatic cell types can identify the key aspects of fibro-genesis. Sequential activation of inflammatory cells and the self-supporting properties of HSCs play an important role in development of fibrosis.

关键词： Liver fibrosis Gene expression Microarray Dimethylnitrosamine Marker genes Hepatic stellate cell Kupffer cell Hepatocytes Metabolic pathway

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Geospatial Technologies and Climate Change 1

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丛书名： Geotechnologies and the Environment

1000年

作者： Janardhanan Sundaresan K M Santosh Andrea Déri Rob Roggema Ramesh Singh

ISBN: (数字)9783319016894

ISBN: (纸本)9783319016887;9783319343846

Geospatial Technologies and Climate Change describes various approaches from different countries on how to use geospatial technologies to help solving climate change issues. It also details how different geospatial technologies (remote sensing, Geographical Information System…) can be used to help with climate monitoring and modeling, how to work with them and what to be careful about. This book is written by scientific experts from four different continents. Written in a comprehensive and complete way, this book is essential reading material for graduate and undergraduate students interested in these techniques and in climate change.

关键词： Earth System sciences Climatology Geographical Information Systems/Cartography Geotechnical Engineering & applied Earth sciences

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First-principles study of the role of surface in the heavy-fermion compound CeRh2Si2

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Physical Review B 2021年第16期103卷 165140-165140页

作者： Yue-Chao Wang Yuan-Ji Xu Yu Liu Xing-Jie Han Xie-Gang Zhu Yi-feng Yang Yan Bi Hai-Feng Liu Hai-Feng Song Laboratory of Computational Physics Institute of Applied Physics and Computational Mathematics Beijing 100088 China Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Science Beijing 100190 China Science and Technology on Surface Physics and Chemistry Laboratory Jiangyou Sichuan 621908 China School of Physical Sciences University of Chinese Academy of Sciences Beijing 100190 China Songshan Lake Materials Laboratory Dongguan Guangdong 523808 China Center for High Pressure Science and Technology Advanced Research Beijing 100094 China

In the heavy-fermion materials, the characteristic energy scales of many exotic strongly correlated phenomena (Kondo effect, magnetic order, superconductivity, etc.) are at millielectron-volt order, implying that the heavy-fermion materials are surface sensitive. Here, we investigate the electronic structures for Si- and Ce-terminated surfaces of CeRh2Si2 by first-principles methods. Our research reveals three notable impacts of surface effects on electronic structures, which are consistent with recent angle-resolved photoemission spectroscopy experiments. First, the relaxation of surface crystal structures changes the relative position of Fermi level, adjusts the dispersion of bands, and enhances the Kondo resonance. Second, the decrease of the hybridization between the Ce−4f and conduction electrons in the surface layer leads to a weaker Kondo resonance peak and the shift of spin-orbit bands. Third, the variation of crystal electric field around surface Ce atoms affects the splitting of Kondo resonance peaks, and also pushes down the lower Hubbard bands of surface 4f electrons. Moreover, we find the characteristic of bulk's lower Hubbard bands, which was overlooked in previous works. Our investigation suggests that these surface effects are potentially important and highlighted in the future researches on properties of strongly correlated materials.

关键词： Electronic structure First-principles calculations Strongly correlated systems DFT+DMFT DFT+U Density functional theory

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Micropatterning of perfluoroalkyl self-assembled monolayers for arraying proteins and cells on chips

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applied Surface science 2009年第17期255卷 7647-7651页

作者： Kira, Atsushi Okano, Kazunori Hosokawa, Yoichiroh Naito, Akira Fuwa, Koh Yuyama, Jyunpei Masuhara, Hiroshi Research and Development Division ULVAC Inc. 2500 Hagizono Chigasaki Kanagawa 253-8543 Japan Graduate School of Engineering Yokohama National University 79-1 Tokiwadai Hodogaya-ku Yokohama Kanagawa 240-0085 Japan Graduate School of Materials Science Nara Institute of Science and Technology 8916-5 Takayama Ikoma Nara 630-0192 Japan Kansei Fukushi Research Center Tohoku Fukushi University 6-149-1 Kunimigaoka Aoba-ku Sendai Miyagi 989-3201 Japan Center for Advanced Science and Innovation Osaka University 2-1 Yamadaoka Suita Osaka 565-0871 Japan Department of Applied Chemistry Institute of Molecular Science National Chiao Tung University 1001 Ta Hsueh Road Hsinchu 30010 Taiwan

Organosilane self-assembled monolayers (SAMs) with perfluoroalkyl groups (Rf) on glass surfaces were used for arraying proteins and cells on chips. Quartz crystal microbalance measurements confirmed the inhibition of protein adsorption on Rf-SAM-modified surfaces and showed efficient adsorption on hydroxyl-, carboxyl-, and amino group-modified surfaces. The characteristics of Rf-modified surfaces were evaluated using solvent contact angle measurement and Fourier transform infrared (FTIR) spectroscopy. The Rf surface was highly water- and oil-resistant, as inferred from the contact angles of water, oleic acid, and hexadecane. Specific peaks of IR spectra were detected in the region from 1160 to 1360 cm-1. Etching with dry plasma completely exfoliated the Rf-SAM, exposing the underlying intact glass surface. Modification conditions were optimized using contact angle and FTIR measurements. After dry plasma processing, the contact angles of all solvents became undetectable, and the IR peaks disappeared. Micrometer scale protein and cell patterns can be fabricated using the proposed method. Protein adsorption on micropatterned Rf-SAM-modified chips was evaluated using fluorescence analysis;protein adsorption was easily controlled by patterning Rf-SAM. PC12 and HeLa cells grew well on micropatterned Rf-SAM-modified chips. Micropatterning of Rf-SAM by dry plasma treatment with photolithography is useful for the spatial arrangement of proteins and cells. © 2009 Elsevier B.V. All rights reserved.

关键词： Proteins

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Internal moisture barrier layer for improving high-humidity reliability of miniature light emitting diode die without encapsulation

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Optics Express 2023年第20期31卷 33732-33740页

作者： Hsu, Chia-Hsun Luo, Hai-Long Li, Shi-Tao Bian, Fu-Qiang Chen, Ya-Zhen Peng, G.A.O. Wu, Wan-Yu Wuu, Dong-Sing Lai, Feng-Min Lien, Shui-Yang Zhu, Wen-Zhang Xiamen Key Laboratory of Development Application for Advanced Semiconductor CoatingTechnology School of Opto-Electronic and Communication Engineering Xiamen University of Technology Fujian Xiamen361024 China Xiamen Silan Advanced Compound Semiconductor Co. Ltd. Fujian Xiamen361026 China Fujian Institute of Research the Structure of Matter Chinese Academy of Sciences Fujian Fuzhou350002 China Department of Materials Science and Engineering National United University Miaoli36063 Taiwan Department of Applied Materials and Optoelectronic Engineering National Chi Nan University Nantou54561 Taiwan Department of Biomedical Engineering Da-Yeh University Changhua51591 Taiwan

Atomic layer deposited Al2O3 films are incorporated into miniature light emitting diodes (mini-LEDs) as an internal moisture barrier layer. The experimental results show that the water vapor transmission rate reaches ≤10−4 g/m2/day when the Al2O3 thickness is ≥40 nm. The mini-LED with a 40 nm-thick Al2O3 layer shows negligible degradation after 1000 h of 85°C/85% relative humidity testing, whereas the device without an Al2O3 layer fails after only 500 h due to delamination occurring at the GaN surface. Current-voltage characteristics of the device without an Al2O3 moisture barrier layer indicate an increase in series resistance and ideality factor. This study provides a simple, light-weighting method to have a satisfactory encapsulation function for miniature LEDs. © 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

关键词： III-V semiconductors

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