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10篇 您的检索式:作者名="Jin Hanmin"
    题名 作者 年代 出处 被引量
1Crystal Field Analysis of Magnetization Curves for Aligned (Pr, Nd)zFg4B 显示文摘YPuN Yu JIN Hanmin KIM Y B 2000J Magn Magn Mater2000,221,:1
2Anisotropic Characteristics of Demagnetization Curve for Nanocrystalline Nd- Fe-B Magnet Calculated by Micromagnetics 显示文摘Jin Hanmin Wang Xuefeng Zhao Shufen 2001Chin Phys2001,10,:1
3显示文摘 Wang Xuefeng 2001Chinese Physcis2001,10,:1
4显示文摘 Jin Hanmin 2001Phys: Condens Matter2001,13,:1
5Possible ferromagnetism in Li, Na and K-doped AlN: A first-principle study显示文摘Ruilin Han Wei Yuan Hui Yang Xiaobo Du Yu Yan Hanmin Jin 2013Journal of Magnetism and Magnetic Materials2013,,:1
6Influence of Ti substitution on the structure and magnetic properties of Sm2Co17 显示文摘Wang Wenquan Yan Yu Jin Hanmin 2003Physica B2003,328,:1
7显示文摘Pan Shuming Zhao Zhibo Jin Hanmin 1989Journal of Magnetism and Magnetic Materials1989,78,3:1
8Impact of land use/land cover types on surface humidity in northern China in the early 21^(st)century显示文摘In the context of global change,it is essential to promote the rational development and utilization of land resources,improve the quality of regional ecological environment,and promote the harmonious development of human and nature for the regional sustainability.We identified land use/land cover types in northern China from 2001 to 2018 with ENVI images and ArcGIS software.Meteorological data were selected from 292 stations in northern China,the potential evapotranspiration was calculated with the Penman-Monteith formula,and reanalysis humidity and observed humidity data were obtained.The reanalysis minus observation(RMO,i.e.,the difference between reanalysis humidity and observed humidity)can effectively characterize the impact of different land use/land cover types(forestland,grassland,cultivated land,construction land,water body and unused land)on surface humidity in northern China in the early 21^(st) century.The results showed that from 2001 to 2018,the area of forestland expanded(increasing by approximately 1.80×10^(4) km^(2)),while that of unused land reduced(decreasing by approximately 5.15×10^(4) km^(2)),and the regional ecological environment was improved.Consequently,land surface in most areas of northern China tended to be wetter.The contributions of land use/land cover types to surface humidity changes were related to the quality of the regional ecological environment.The contributions of the six land use/land cover types to surface humidity were the highest in northeastern region of northern China,with a better ecological environment,and the lowest in northwestern region,with a fragile ecological environment.Surface humidity was closely related to the variation in regional vegetation coverage;when the regional vegetation coverage with positive(negative)contributions expanded(reduced),the land surface became wetter.The positive contributions of forestland and water body to surface humidity were the greatest.Unused land and construction land were associated with the most serious negative contributions to surface humidity.Affected by the regional distribution pattern of vegetation,surface humidity in different seasons decreased from east to west in northern China.The seasonal variation in surface humidity was closely related to the growth of vegetation:surface humidity was the highest in summer,followed by autumn and spring,and the lowest in winter.According to the results,surface humidity is expected to increase in northeastern region of northern China,decrease in northern region,and likely increase in northwestern region.JIN Junfang YIN Shuyan YIN Hanmin 2022Journal of Arid Land2022,14,7:0
9Establishment of green graphite industry:Graphite from biomass and its various applications显示文摘Resource-and energy-efficient biomass exploitation for green graphite production is one of the most effective strategies for satisfying graphite demand while minimizing energy consumption and carbon emissions.This study investigated green graphite production from biomass waste and its applications to establish a green graphite industry.Biomass pyrolysis and catalytic graphitization of biochar were studied first to produce green graphite.The optimized green graphite exhibited a reversible capacity of 264 mA h/g and 97%capacity retention over 100 cycles in a half-cell.Green graphite electrodes with a resistivity lower than 5μΩm were fabricated by using organic fraction bio-oil as a green binder.Other green graphite applications,including printing,conductive printing,pencils,and refractories,were also achieved.The overall process of graphite anode and electrode synthesis from biomass waste and short-rotation energy crops was modeled.Approx.95 kg of battery graphite or 109 kg of metallurgical graphite electrodes can be produced per ton of biomass with low primary energy consumption and carbon footprint.Prominently,the modeling result and life cycle assessment demonstrated that,for the production of battery graphite from biomass waste,net-negative-CO_(2)emissions(−0.57 kg CO_(2)-eq/kg graphite powders)with net-negative-primary energy consumption(−28.31 MJ/kg graphite powders)was achieved.Ziyi Shi Shule Wang Yanghao Jin Lingfeng Zhao Shiwei Chen Hanmin Yang Yuxiao Cui Rikard Svanberg Chuchu Tang Jianchun Jiang Weihong Yang PäGJösson Tong Han 2023SusMat2023,3,3:0
10Micromagnetic Simulation of Demagnetization Curves for Single-Phase Nanocrystalline Nd-Fe-B Magnet显示文摘The demangetization curves for the nanocrystalline Nd-Fe-B magnets of the stoichiometric composition were calculated by using the finite element technique of micromagnetism. The curve, especially _iH_c become smaller with increase of N. The most small the from a series of the curves along different field directions is closer to that for N=∞. _iH_c increases with increase of L. and are close or some what smaller than that the experimental values should be.Hanmin JIN, Sufen ZHAO and Xuefeng WANG (Department of Physics, Jinn University, Changchun 130012, China) 2000Journal of Materials Science & Technology2000,16,2:0
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