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| 1 | Sulfur-encapsulated in heteroatom-doped hierarchical porous carbon derived from goat hair for high performance lithium–sulfur batteries显示文摘Biomass-derived carbon materials have aroused widespread concern as host material of sulfur to enhance electrochemical performances for lithium–sulfur batteries. Herein, goat hair, as a low-cost and eco-friendly precursor, is employed to fabricate cauliflower-like in-situ nitrogen, oxygen and phosphorus tri-doped porous biomass carbon(NOPC) by a facile activation with H_3PO_4 and carbonization process.The morphology and microstructure of NOPC can be readily tuned by altering pyrolysis temperature. The as-prepared NOPC matrix material carbonized at 600 °C possesses 3D hierarchical porous structure, high specific surface area(535.352 m^2 g^(-1)), and appropriate pore size and pore size distribution. Encapsulating sulfur into the NOPC depends on a stem-melting technology as cathode materials of Li–S batteries. Due to the synergistic effect of special physical structure and inherent tri-doping of N, O and P, electrons and ions transfer and utilization of active sulfur in the materials are improved, and the shuttle behaviors of soluble lithium polysulfides are also mitigated. Consequently, the S/NOPC-600 composite exhibits excellent electrochemical performance, giving a high initial discharge capacity of 1185 mA h g^(-1) at 0.05 C and maintaining a relatively considerable capacity of 489 m A h g^(-1) at 0.2 C after 300 cycles. Our work shows that a promising candidate for cathode material of Li–S batteries can be synthesized using low-cost and renewable biomass materials by a facile process. | Juan Ren Yibei Zhou Huali Wu Fengyu Xie Chenggang Xu Dunmin Lin | 2019 | Journal of Energy Chemistry2019，28，3： | 9 |
| 2 | The age of the 'old red sand' on the coasts of south Fujian and west Guangdong, China显示文摘The sedimentary strata and deposition ages of the 'old red sand' distributed along the coasts of south Fujian and west Guangdong are determined by lithostratigraphy, magnetic stratigraphy and earth chemistry combined with TL, ESR and 14C-dating techniques. The research shows that the 'old red sand' was aeolian sediments deposited from 55 400 to 9 000 aBP, the last glacial period in the middle and later age of Late Pleistocene. Most of them deposited in two periods of 56-42 ka and 30-10 ka. The 'old red sand' deposited in the period of 30-10 ka, the later Wurm glacier substage (Q33), developed on the largest scale with the widest distribution. | WU Zheng WANG Wei TAN Huizhong XU Fengyu | 2000 | Chinese Science Bulletin2000，45，13： | 5 |
| 3 | Stability and bifurcation control of a neuron system under a novel fractional-order PD controller显示文摘In this paper, we address the problem of bifurcation control for a delayed neuron system. By introducing a new fractional-order Proportional-Derivative(PD) feedback controller, this paper aims to control the stability and Hopf bifurcation through adjusting the control gain parameters. The order chosen in PD controller is different with that of the integer-order neuron system. Sufficient conditions for guaranteeing the stability and generating Hopf bifurcation are constructed for the controlled neuron system. Finally,numerical simulation results are illustrated to verify our theoretical derivations and the relationships between the onset of the Hopf bifurcation and the gain parameters are obtained. | SHI Shuo XIAO Min RONG LiNa ZHENG WeiXing TAO BinBin CHENG ZunShui XU FengYu | 2019 | Science China(Technological Sciences)2019，62，12： | 3 |
| 4 | The progress and prospect of assessment measures of uterine cavity function for infertility patients显示文摘Objective:To explore the progress and prospect of evaluation methods for infertility patients.Methods:From September 2017 to December 2020,199 cases of infertility patients who have accepted mini-hysteroscopy examination in the Department of Gynecological Endocrinology,Beijing Obstetrics and Gynecology Hospital,Capital Medical University.The patients who had primary ovary insufficiency,tubal infertility were excluded;patients with hysteroscopy contradiction,such as acute or sub-acute vaginal tract inflammation,endometrium lesion or endometrium carcinoma,severe cardiovascular,liver or kidney insufficiency were excluded.40 patients were excluded and 15 patients lost follow up,144 patients were eventually included in the analysis.The patient’s age,body mass index,infertility etiology,preoperative and postoperative stimulate ovulation cycle,pregnancy state and pregnancy time were recorded.The effect of mini-hysteroscopy on ovulation induction cycle was analyzed in pregnant patients.Results:The average age of 144 patients was 32.10±4.67 years old.96(66.67%)patients were found to have intrauterine abnormalities,while 48(33.33%)patients were found to have normal intrauterine cavity.48 cases of pregnancy,accounting for 33.33%;the median and interquartile ranges[M(Q1,Q3)]of ovulation induction cycles before and after surgery were respectively[3(0,5)],[2(1,3)],the difference was statistically significant(P<0.05).Among the 48 pregnant patients,32 of them had no structural lesions in hysteroscopy,the ovulation induction cycle of these patients before and after hysteroscopy were respectively[5(0,9)],[1(0,3)],the difference was statistically significant(P<0.05).Conclusion:Uterine cavity evaluation is important for the assessments of fertility.As an advanced diagnosis instrument,mini-hysteroscopy can not only timely detect the intrauterine abnormalities of patients,hut also with great application value in shorten the ovulation cycle in infertility patients and increase the pregnancy rate. | Luping Zhang Rui Ju Xiangyan Ruan Yinmei Dai Husheng Wang Fengyu Jin Jing Jin Muqing Gu Jiaojiao Cheng Yu Yang Xin Xu Thomas Roemer | 2021 | Global Health Journal2021，5，2： | 3 |
| 5 | A Review of Mineral Resources and GIS Applications in Mineral Resource Assessment in Northeast China显示文摘Northeast China is one of the regions in China that possesses a great abundance of mineral resources. Coal. petroleum, natural gas, gold, iron, magnesite, graphite, talc, molding sand, glass sand and some others account for large portion in reserves and yields of that in the whole country. The region faced also shortages of copper, molybdenum, oil shale, zirconium, tantalum, rare earth, and beryllium, although they have large reserves, but limited by economical and technical factors. Geological mapping and mineral exploration activities have been intensive. Only the north part of Daxinanling Mountains in the region leaves unexplored. GIS applications in mineral resource assessment in the region start not long. Databases for GIS applications are on the way of construction. Well - trained technical staff and expertise do not meet the demand. This article reviews the situation of mineral resources and GIS applications for mineral resource assessment in the region. Suggestions on multi - lateral cooperation and GIS training are also made. | Zhou Yunxuan Wang Lei Liu Wansong Xu Huiping Sun Fengyue | 2000 | Global Geology2000，5，2： | 3 |
| 6 | Web Classification Based on Latent Semantic Indexing显示文摘 | Qianmu Li Manwu Xu Jun Hou Fengyu Liu | 2006 | 通讯和计算机(中英文版)2006，3，1： | 2 |
| 7 | Naphthalimide-rhodamine based fluorescent probe for ratiometric sensing of cellular pH显示文摘The pH values of lysosomes in cancer cells is slightly lower than that in normal cells, which can be used to distinguish cancer cells from normal cells. According to this, a naphthalimide-rhodamine based fluorescent probe(hereafter referred to as RBN) with a pK_a of 4.20 was designed and synthesized for ratiometric sensing of cellular pH via fluorescence resonance energy transfer(FRET), which can respond to different pH precisely through ratiometric fluorescence intensity(Ⅰ_(577)/Ⅰ_(540)). RBN can be employed to distinguish cancer cells from normal cells on the basis of different fluorescent response, in particular, RBN showed excellent water solubility and low cell toxicity, all these are quite significant for potential application in cancer diagnose and therapy. | Jia Wen Pengyi Xia Ziming Zheng Yongqian Xu Hongjuan Li Fengyu Liu Shiguo Sun | 2017 | Chinese Chemical Letters2017，28，10： | 2 |
| 8 | NiO nanosheet assembles for supercapacitor electrode materials显示文摘In this paper, large scale hierarchically assembled Ni O nanosheets have been favorably fabricated through a facile hydrothermal route. The as-prepared Ni O nanosheet assembles were characterized in detail by various analytical techniques. The results showed these nanosheets present the thickness of about 30 nm and the surface area is 116.9 m^2 g^(-1). These NiO nanosheet assembles were used as the working electrode materials in electrochemical tests, which demonstrated a specific capacitance value of 81.67 Fg ^(-1)at the current density of 0.5 Ag^(-1)and excellent long cycle-life stability with 78.5% of its discharge specific capacitance retention after 3000 cycles at the current density of 0.5 Ag^(-1), revealing the as-synthesized NiO nanosheet assembles might be a promising electrode material for supercapacitor applications. | Huanhao Xiao Shunyu Yao Hongda Liu Fengyu Qu Xu Zhang Xiang Wu | 2016 | Progress in Natural Science:Materials International2016，26，3： | 2 |
| 9 | Fabrication of ZnO ring-like nanostructures at a moderate temperature via a thermal evaporation process显示文摘 | Xiang Wu Fengyu Qu Xu Zhang | 2009 | Journal of Alloys and Compounds2009，486，： | 1 |
| 10 | Chinese postman problem based on DNA computing显示文摘 | Yin Zhixiang Zhang Fengyue Xu Jin | 2002 | Journal of Chemical Information and Computer Science2002，42，2： | 1 |
| 11 | A Novel Ad hoc Network Troubleshooting System显示文摘 | Li Qianmu Liu Fengyu Xu Manwu | 2006 | Journal of Computational Information Systems2006，2，3： | 1 |
| 12 | Effect of thermal sterilization on the selected qualityattributes of sweet and sour carp显示文摘 | FENGYU TANG WENSHUI XIA YANSHUN XU etal | 2014 | International Journal ofFood Properties2014，17，8： | 1 |
| 13 | Design of the cryo- genic system for a 400 kW experimental HTS synchronous motor 显示文摘 | CHEN Anbin LIU Xiaokun XU Fengyu | 2010 | IEEE Transactions on Applied Superconductivity2010，20，3： | 1 |
| 14 | The implementation of role- Based access control on the Web显示文摘 | Chungen Xu Han Yan Fengyu Liu | 2001 | Info- tech and Info- net2001，，4： | 1 |
| 15 | A DNA Algorithm for the Graph Coloring Problem显示文摘 | Wenbin Liu Fengyue Zhang Jin Xu | 2002 | Journal of Chemical Information and Computers2002，42，5： | 1 |
| 16 | A DNA Algorithm for the Graph Coloring Problem 显示文摘 | Liu Wenbin Zhang Fengyue Xu Jin | 2002 | Journal of Chemical Information and Computer Sciences2002，42，5： | 1 |
| 17 | Inspection method of cable-stayed bridge using magnetic flux leakage detection: principle, sensor design, and sig- nal processing显示文摘 | Xu Fengyu Wang Xingsong Wu Hongtao | 2012 | Journa: of Mechanical Science and Technology2012，26，3： | 1 |
| 18 | Quench protection for the MICE cooling channel coupling magnet显示文摘 | Guo Xinglong Xu Fengyu Wang Li | 2009 | IEEE Trans on Applied Superconducting2009，19，3： | 1 |
| 19 | Hydrothermal evolution and source of metallogenic materials of Beiya Au polymetallic deposit,western Yunnan,China显示文摘The Beiya porphyry-skarn gold-polymetallic deposit is one of the largest gold deposits in China and it also contains significant amounts of silver and base metals.The ore-bearing monzonitic granite porphyry occurs as a stock,of which the skarn type gold-copper-iron ore bodies are controlled by the contact zone between alkali-rich monzonitic granite porphyry and the limestone,and the gold-silver polymetallic mineralization is controlled by interlayer structure.Alteration and mineralization occur around the intrusion and exterior of monzonitic granite porphyry.Ore mineral formation sequence is as follows:skarn minerals→magnetite→pyrite→chalcopyrite/bornite+pyrite+gold→pyrite+galena+gold(silver).Petrographic studies of fluid inclusions indicate that the following types of inclusions exist in the pre-mineralization quartz-pyrite stage:gas-liquid two-phase inclusions(L-type),three-phase inclusions with daughter minerals(D-type)and gas-rich inclusions(V-type).The colorless transparent quartz in the main gold-chalcopyrite-pyrite stage mainly consists of L-type and V-type inclusions,whereas the inclusions in the late gold-silver-galena stage are mainly L-type.The evolution of ore-forming fluids shows a trend from high temperature,high salinity to medium-low temperature and low salinity.Medium-low density fluids play a dominant role in mineral component migration and transportation.Fluid cooling and boiling are the main mechanisms of gold-copper precipitation,while the involvement of atmospheric water and pH reduction are the main mechanisms of gold-silver polymetallic precipitation.The fluids in the quartz-pyrite stage before mineralization and the main gold-chalcopyrite-pyrite stage are dominated by magmatic water,while in the gold-silver-galena stage the fluids are dominated by atmospheric water.Isotope tracers show that S and Pb are mainly derived from monzonitic granite porphyry,not from limestone of the Beiya Formation. | DENG Jiafang SUN Fengyue XIN Wei XU Zhihe PAN Zhongcui WU Dongqian TIAN Nan | 2020 | Global Geology2020，23，2： | 1 |
| 20 | Clinical Significance and Functional Studies of Myeloid-Derived Suppressor Cells in Chronic Hepatitis C Patients显示文摘 | Weiping Cai Aiping Qin Pengle Guo Dehong Yan Fengyu Hu Qiong Yang Min Xu Yongshui Fu Jie Zhou Xiaoping Tang | 2013 | Journal of Clinical Immunology2013，，4： | 1 |
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