检索结果-南通市图书馆

Journal of Materiomics 2022年第5期8卷 929-936页

作者： Sitong wei Boyi wang Zipei Zhang Wenhao Li Lu Yu Shikai wei Zhen Ji weiyu Song Shuqi zheng College of New energy and Materials China University of PetroleumBeijing102249China beijing National Laboratory for Condensed Matter physics Institute of PhysicsChinese Academy of SciencesBeijing100190China School of Physical sciences University of Chinese Academy of SciencesBeijing100049China College of Science China University of PetroleumBeijing102249China

The previous works commonly adjust the carrier concentration through acceptor doping,but at the same time,the decrease of the Seebeck coefficient limits the further improvement of electrical properties in Cu_(3.SbSe_(4)-based *** this work,a microwave-assisted hydrothermal synthesis method was used to synthesize Cu_(3.SbSe_(4)/TiO_(2) hollow *** of TiO_(2) participates in the reaction,replaces the Sb site of Cu_(3.SbSe_(4) to form holes,and the rest is dispersed in the matrix in the form of the second *** first-principles calculations reveal that the doping of Ti significantly changes the band structure and phonon spectrum,thereby regulating carrier concentration while increasing phonon *** addition,experimental results show that the energy filtering effect generated by the extra-mixed TiO_(2) nano particles,which suppresses the decrease of Seebeck coefficient by acceptor ***,the highest average power factor 897.5 mW m^(-1) K^(-2) and the zT peak value of 0.70 can be obtained in Cu_(3.SbSe_(4)/6%TiO_(2) sample at 298e623.*** work provides a new sight to improve the thermoelectric properties in Cu_(3.SbSe_(4) through carrier concentration regulation and nano-phase composition.

关键词： Cu_(3.SbSe_(4)/Nano-TiO_(2) energy filtering effect Thermoelectric Synergistic modulation

Evaluation of growth characteristics of Aspergillus parasiticus inoculated in different culture media by shortwave infrared(SWIR) hyperspectral imaging

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Innovative Optical Health sciences 2018年第5期11卷 69-83页

作者： Xuan Chu wei wang Xinzhi Ni Haitao zheng Xin {3. Hong Zhuang Kurt C.Lawrence Chunyang Li Yufeng Li Chengjun Lu College of Engineering China Agricultural University Beijing 100083P.R.China College of Mechanical and Electrical Engineering Zhongkai University of Agriculture Engineering Guangzhou 510225 P.R.China Crop Genetics and Breeding Research Unit USDA-ARS 2747 Davis RoadTiftonGA 31793USA College of Food Science&Nutritional Engineering china Agricultural University Beijing 100083PR.China Quality&Safety Assessment Research Unit U.S.National Poultry Research Center USDA-ARS 950 College Station Rd.AthensGA 30605USA Quality&Safety Assessment Research Unit USDA-ARS AthensGA 30605USA institute of Food Science and Technology Jiangsu academy of Agricultural sciences Nanjing 210014 P.R.China Multidisciplinary Initiative Center institute of high energy {3. Chinese academy of sciences beijing 100049 P.R.China Lingang Experimental Middle School Linyi 276624 P.R.China

The growth characteristics of Aspergillus parasitic us incubated on two culture media were ex-amined using shortwave infrared(SWIR,1000-2500 nm)hyperspectral imaging(HSI)in this *** images of the *** colonies growing on rose bengal medium(RBM)and maize agar medium(MAM)were recorded daily for 6 *** growth phases of *** were indicated through the pixel number and average spectra of *** score plot of the first principal component(PC1)and PC2,four growth zones with varying mycelium densities were *** characteristic wavelengths(1095,1145,1195,1279,1442,1655,183. and 1929 nm)were selected from PC1 loading,average spectra of each colony as well as each growth zone.F urthermore,support vector machine(S VM)classifier based on the eight wavelengths was built,and the classification accuracies for the four zones(from outer to inner zones)on the colonies on RBM were 99.77%,993.%,99.75%and 99.60%and 99.77%,993.%,99.3.%and 98.22%for colonies on *** addition,a new score plot of PC2 and PC3.was used to differ-entiate the colonies incubated on RBM and MAM for 6 *** characteristic wavelengths of 1067,1195,1279,13.9,1459,1694,183. and 1929 nm were selected from the loading of PC2 and *** on them,a new SVM model was developed to diferentiate colonies on RBM and MAM with accuracy of 100.00%and 9999%,*** conclusion,SWIR hyperspectral image is a powerful tool for evaluation of growth characteristics of *** incubated in diferent culture media.

关键词： Aspergilus parasiticus growth characteristics characteristic wavelengths shortwave infrared(SWIR)hyperspectral imaging

Emerging contaminants:A One Health perspective

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Innovation 2024年第4期5卷 140-170,139页

作者： Fang wang Leilei Xiang Kelvin Sze-Yin Leung Martin Elsner Ying Zhang Yuming Guo Bo Pan Hongwen Sun Taicheng An Guangguo Ying Bryan WBrooks Deyi Hou Damian EHelbling Jianqiang Sun Hao Qiu Timothy MVogel wei Zhang Yanzheng Gao Myrna JSimpson Yi Luo Scott XChang Guanyong Su Bryan MWong Tzung-May Fu Dong Zhu Karl JJobst Chengjun Ge Frederic Coulon Jean Damascene Harindintwali Xiankui Zeng Haijun wang Yuhao Fu Zhong wei Rainer Lohmann Changer Chen Yang Song Concepcion Sanchez-Cid Yu wang Ali El-Naggar Yiming Yao Yanran Huang Japhet Cheuk-Fung Law Chenggang Gu Huizhong Shen Yanpeng Gao Chao Qin Hao Li Tong Zhang Natàlia Corcoll Min Liu Daniel SAlessi Hui Li Kristian KBrandt Yolanda Pico Cheng Gu Jianhua Guo Jianqiang Su Philippe Corvini Mao Ye Teresa Rocha-Santos Huan He Yi Yang Meiping Tong weina Zhang Fidèle Suanon Ferdi Brahushi Zhenyu wang Syed AHashsham Marko Virta Qingbin Yuan Gaofei Jiang Louis A.Tremblay Qingwei Bu Jichun Wu Willie Peijnenburg Edward Topp Xinde Cao Xin Jiang Minghui zheng Taolin Zhang Yongming Luo Lizhong Zhu Xiangdong Li DamiàBarceló Jianmin Chen Baoshan Xing Wulf Amelung Zongwei Cai Ravi Naidu Qirong Shen Janusz Pawliszyn Yong-guan Zhu Andreas Schaeffer Matthias C.Rillig Fengchang Wu Gang Yu James M.Tiedje State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of Chinese academy of sciences Beijing 100049China Department of Chemistry Hong Kong Baptist UniversityHong KongChina HKBU institute of Research and Continuing Education Shenzhen Virtual University ParkShenzhenChina Technical University of Munich TUM School of Natural SciencesInstitute of Hydrochemistry85748 GarchingGermany School of Resources&Environment Northeast Agricultural UniversityHarbin 150030China Climate Air Quality Research UnitSchool of Public Health and Preventive MedicineMonash UniversityMelbourneVICAustralia Faculty of Environmental Science&Engineering Kunming University of Science&TechnologyKunming 650500China Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory of Environmental Theoretical Chemistry South China Normal UniversityGuangzhouGuangdong 510006China Department of Environmental Science Baylor UniversityWacoTXUSA Center for Reservoir and Aquatic Systems Research(CRASR) Baylor UniversityWacoTXUSA School of Environment Tsinghua UniversityBeijing 100084China School of Civil and Environmental Engineering Cornell UniversityIthacaNY 14853USA Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province Zhejiang University of TechnologyHangzhou 310014China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Laboratoire d’Ecologie Microbienne Universite Claude Bernard Lyon 1UMR CNRS 5557UMR INRAE 1418VetAgro Sup69622 VilleurbanneFrance Department of Pla

Environmental pollution is escalating due to rapid global development that often prioritizes human needs over planetary *** global efforts to mitigate legacy pollutants,the continuous introduction of new substances remains a major threat to both people and the *** response,global initiatives are focusing on risk assessment and regulation of emerging contaminants,as demonstrated by the ongoing efforts to establish the UN’s Intergovernmental Science-Policy Panel on Chemicals,Waste,and Pollution *** review identifies the sources and impacts of emerging contaminants on planetary health,emphasizing the importance of adopting a One Health *** for monitoring and addressing these pollutants are discussed,underscoring the need for robust and socially equitable environmental policies at both regional and international *** actions are needed to transition toward sustainable pollution management practices to safeguard our planet for future generations.

关键词： pollution planet contaminants

Growth and in situ high-pressure reflection high energy electron difraction monitoring of oxide thin films

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science china(physics,Mechanics & Astronomy) 2013年第12期56卷 2312-2326页

作者： LI Jie PENG wei CHEN Ke wang Ping CHU HaiFeng CHEN YingFei zheng DongNing beijing National Laboratory for Condensed Matter physics and institute of physics Chinese Academy of Sciences

Interface and surface physics is an important sub-discipline within condensed matter physics in recent decades. Novel concepts like oxide-electronic device are prompted, and their performance and lifetime are highly dependent on the flatness and abruptness of the layer surfaces and interfaces. Reflection high-energy electron diffraction （RHEED）, which is extremely sensitive to surface morphology, has proven to be a versatile technique for the growth study of oxide thin films. A differential pumping unit enables an implementation of RHEED to pulsed laser deposition （PLD） systems, ensuring an in situ monitoring of the film growth process in a conventional PLD working oxygen pressure up to 3. Pa. By optimizing the deposition conditions and analyzing the RHEED intensity oscillations, layer-by-layer growth mode can be attained. Thus atomic control of the film surface and unit-cell control of the film thickness become reality. This may lead to an advanced miniaturization in the oxide electronics, and more importantly the discovery of a range of emergent physical properties at the interfaces. Herein we will briefly introduce the principle of high-pressure RHEED and summarize our main results relevant to the effort toward this objective, including the growth and characterization of twinned Laz/3.aj/3.nO3.thin films and ReTiO〉6/2 （Re = La, Nd; ~5 = 0 - 1） AnBnO3.＋2 structures, on YSZ-buffered ＇Silicon on Insulator＇ and LaA103.substrates, respectively, as well as the study of the initial structure and growth dynamics of YBazCu3.7-6 thin films on SrTiO3.substrate. Presently we have realized in situ monitoring and growth mode control during oxide thin film deposition process.

关键词： RHEED oxide thin film pulsed laser deposition interface

维普期刊数据库

A topologically substituted boron nitride hybrid aerogel for highly selective CO2 uptake

在线全文

学校读者我要写书评

暂无评论

Nano Research 2018年第12期11卷 6325-6335页

作者： R.Govindan Kutty Sivaramapanicker Sreejith Xianghua Kong Haiyong He Hong wang Junhao Lin Kazu Suenaga Chwee Teck Lim Yanli zhao wei Ji {3. Liu Center for Programmable Materials School of Materials Sdence and EngineeringNanyang Technological UniversitySO Nanyang Avenue639798Singapore School of Materials Science and EngineeringNanyang Technological UniversitySingapore 639798Singapore Center for Advanced 2D Materials and Graphene Research Center National University of Singapore6Science Drive 2Singapore117546Singapore Biomedical institute for Global Health Research and Technology National University of Singapore14Medical DriveSingapore 117599Singapore Department of physics and beijing Key Laboratory of Optoelectronic Functional Materials & Micro-Nano Devices Renmin University of ChinaBeijing 100872China National institute of Advanced Industrial Science and Technology (AIST) AIST Central 5Tsukuba305-8565-Japan Division of Chemistry and Biological Chemistry School of Physical and Mathematical SciencesNanyang Technological University21-Nanyang LinkSingapore 637371Singapore Department of Biomedical Engineering National University of SingaporeSingapore 117543Singapore

A topologically mediated synthesis of porous boron nitride aerogel has been experimentally and theoretically investigated for carbon dioxide (CO2) uptake. Replacement of the carbon atoms in a precursor aerogel of graphene oxide and carbon nanotubes was achieved using an elemental substitution reaction, to obtain a boron and nitrogen framework. The newly prepared BN aerogel possessed a specific surface area of 716.56 m2/g and exhibited an unprecedented twentyfold increase in CO2 uptake over N2, adsorbing 100 cc/g at 2.3 K and 80 cc/g in ambient conditions, as verified by adsorption isotherms via the multipoint Brunauer-Emmett-Teller (BET) method. Density functional theory calculations were performed to give hints on the mechanism of such high selectivity of CO2 over N2 adsorption in BN aerogel, which may be due to the interaction between the intrinsic polar nature of B-N bonds and the high quadrupole moment of CO2 over N2.

关键词： boron nitride boron nitride nanotube aerogel quadrupole moment selective CO2 adsorption

LICOM Model Datasets for the CMIP6 Ocean Model Intercomparison Project

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Atmospheric sciences 2020年第3期37卷 239-249页

作者： Pengfei LIN Zhipeng YU Hailong LIU Yongqiang YU Yiwen LI Jirong JIANG wei XUE Kangjun CHEN Qian YANG Bowen zhao Jilin wei Mengrong DING Zhikuo SUN Yaqi {3. Yao MENG weipeng zheng Jinfeng MA LASG Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Computer Network Information Center Chinese Academy of SciencesBeijing 100190China Department of Computer Science and Technology Tsinghua UniversityBeijing 100084China College of Earth and Planetary sciences University of Chinese Academy of SciencesBeijing 100049China

The datasets of two Ocean Model Intercomparison Project(OMIP)simulation experiments from the LASG/IAP Climate Ocean Model,version 3.LICOM3.,forced by two different sets of atmospheric surface data,are described in this *** experiment forced by CORE-II(Co-ordinated Ocean–Ice Reference Experiments,Phase II)data(1948–2009)is called OMIP1,and that forced by JRA55-do(surface dataset for driving ocean–sea-ice models based on Japanese 55-year atmospheric reanalysis)data(1958–2018)is called ***,the improvement of LICOM from CMIP5 to CMIP6 and the configurations of the two experiments are ***,the basic performances of the two experiments are validated using the climatological-mean and interannual time scales from *** find that the mean states,interannual variabilities,and long-term linear trends can be reproduced well by the two *** differences between the two datasets are also ***,the usage of these data is *** datasets are helpful toward understanding the origin system bias of the fully coupled model.

关键词： OMIP CMIP6 ocean sea-ice model model bias

维普期刊数据库

Natural keratin-based Fe-S_(1)N_(3. single atom catalyst for insights into the coordination regulation effect of Fenton-like catalysis with high efficiency

在线全文

学校读者我要写书评

暂无评论

Nano Research 2023年第7期16卷 9003-9011页

作者： Zhiyi Sun Yujuan wei Ting Cao zheng Liu Rui Sui Xiang Li Jiajing Pei Zhuo Chen Shuo wang energy&Catalysis Center School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China College of Textile and Garments Hebei University of Science&TechnologyThe Innovation Center of Textile and Garment TechnologyHebei 050018China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China SEPA Key Laboratory of Eco-Industry Chinese Research Academy of Environmental SciencesBeijing 100012China Department of Chemistry Tsinghua UniversityBeijing 100084China Advanced Research institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China institute of high energy {3. Chinese Academy of SciencesBeijing 100049China

Single atom catalysts(SACs)have attracted great attention,yet the quest for highly-efficient catalysts is driven by the current obstacles of ambiguous structure-performance ***,we report a nature keratin-based Fe-S_(1)N_(3.SACs with ultrathin two-dimensional(2D)porous carbon nanosheets structure,by controlling the active center through the precise coordination of sulfur and *** with natural silk-based Fe-N_(4) catalyst,the Fe-S_(1)N_(3.SACs exhibit excellent Fenton-like oxidation degradation ability.X-ray absorption fine structure(XAFS)and electron paramagnetic resonance(EPR)results confirm that S doping is conducive to electron transfer,to accurately generate·OH with high oxidative degradation capacity at the active ***,the optimized Fe-S_(1)N_(3.catalyst showed higher oxidation degradation activity for organic pollutant substrates(methylene blue(MB),Rhodamine B(RhB)and phenol),significantly superior to Fe-N_(4) *** work is devoted to the treatment and application of natural fibers,which provides a novel method for the synthesis of SACs and the regulation of atomic coordination environment.

关键词： iron single atom atomic regulation natural fiber Fenton-like catalysis

Influence of scanning force microscope loading force on measurement of ion-track diameter

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 1997年第3期 32-34页

作者： wang Yu Gang, zhao wei Jiang ( {3. of Heavy Ion physics, Peking University, beijing 100871) Ackermann J, Müller A and Neumann R (Gesellschaft für Schwerionenforschung (GSI), Planckstr. 1,D 64291 Darmstadt, Germany)

ＩｎｆｌｕｅｎｃｅｏｆｓｃａｎｎｉｎｇｆｏｒｃｅｍｉｃｒｏｓｃｏｐｅｌｏａｄｉｎｇｆｏｒｃｅｏｎｍｅａｓｕｒｅｍｅｎｔｏｆｉｏｎｔｒａｃｋｄｉａｍｅｔｅｒＷａｎｇＹｕＧａｎｇ，ＺｈａｏＷｅｉＪｉａｎｇ（Ｉｎｓ... 详细信息

ＩｎｆｌｕｅｎｃｅｏｆｓｃａｎｎｉｎｇｆｏｒｃｅｍｉｃｒｏｓｃｏｐｅｌｏａｄｉｎｇｆｏｒｃｅｏｎｍｅａｓｕｒｅｍｅｎｔｏｆｉｏｎｔｒａｃｋｄｉａｍｅｔｅｒＷａｎｇＹｕＧａｎｇ，ＺｈａｏＷｅｉＪｉａｎｇ（ＩｎｓｔｉｔｕｔｅｏｆＨｅａｖｙＩｏｎＰ...

关键词： Ion track diameter Scanning force microscopy loading force

永磁性Pr_(55)Al_(12)Fe_(3.)Cu_3.块金属玻璃

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

物理学报 2003年第3期52卷 652-655页

作者：李正白海洋赵德乾潘明祥王万录汪卫华中国科学院物理研究所北京100080 重庆大学数理学院应用科学与技术系重庆400044

报道一个新的Pr55Al1 2 Fe3. Cu3.块金属玻璃 .采用铜模吸铸法制备了直径为 5mm、长度达 10 0mm的Pr55Al1 2 Fe3.Cu3.块金属玻璃 .差示扫描量热分析结果表明在该Pr基大块金属玻璃体系具有宽达 6 4K左右的过冷液相区 ,而且该合金呈非... 详细信息

报道一个新的Pr55Al1 2 Fe3. Cu3.块金属玻璃 .采用铜模吸铸法制备了直径为 5mm、长度达 10 0mm的Pr55Al1 2 Fe3.Cu3.块金属玻璃 .差示扫描量热分析结果表明在该Pr基大块金属玻璃体系具有宽达 6 4K左右的过冷液相区 ,而且该合金呈非晶态时的熔化温度要比相应晶态样品的熔化温度高约 14 0K .磁滞回线测量表明非晶态Pr55Al1 2 Fe3.Cu3.体合金在室温下呈现永磁特性 ,而完全晶化后样品在室温下呈现软磁特性 .

关键词： Pr55Al12Fe3.Cu3.块金属玻璃晶化永磁性铜模吸铸法熔化合金体系

维普期刊数据库

Absolute measurement of radiant power for synchrotron radiation monochromatized X-rays

在线全文

学校读者我要写书评

暂无评论

Radiation Detection Technology and Methods 2020年第1期4卷 97-105页

作者： Fan Li Yi-Dong zhao Pei-wei wang Lei {3. Si-Ming Guo Ji wang Kun Tang Xiao-Juan zhao Jian-Min Li institute of high energy {3. Chinese Academy of SciencesBeijingChina National institute of Metrology BeijingChina University of Chinese academy of sciences BeijingChina

Purpose Absolute measurement of radiant power in the X-ray region is essential for many applications in astrophysics,spectroscopy,and X-ray *** paper presents a dependable method of absolute measurement of radiant power for synchrotron radiation monochromatized *** A free-air ionization chamber was examined closely and employed as the detector in the present *** measuring principle was discussed,and the correction factors were *** measurement of radiant power for synchro-tron radiation monochromatized X-rays in the region of 6-20 keV was performed using the free-air ionization chamber at beijing Synchrotron Radiation *** a verification and an important application,photodiodes were calibrated against the free-air ionization *** Relative standard uncertainties of absolute measurement using free-air ionization chamber are about 1%.Calibration of photodiodes within the photon energy range from 6 to 20 keV has relative standard uncertainties below 1.5%.Conclusion The free-air ionization chamber is qualified to be used in many disciplines to support the measurement of opti-cal radiation.

关键词： Absolute measurement Radiant power Free-air ionization chamber Synchrotron radiation X-ray