|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | A Local Cluster of Omicron Variant COVID-19 Likely Caused by Internationally Mailed Document——Beijing Municipality,China,January 2022显示文摘On January 15,2022,a 26 years old female(Case A)went to a sampling site for coronavirus disease 2019(COVID-19)testing due to excessive fatigue and fever for two days.This patient preliminarily tested positive for severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)using a quantitative real-time reverse transcription polymerase chain reaction(qRT-PCR)method. | Daitao Zhang Shuangsheng Wu Zhenyong Ren Ying Sun Xiangfeng Dou Zhaomin Feng Fu Li Yi Tian Shujuan Cui Baiwei Liu Bing Lyu Xiaoli Wang Feng Liu Lina Jin Chu Jiang Lina Tian Zhenjiang Xin Zhichao Liang Lei Jia Quanyi Wang Yang Pan Peng Yang | 2022 | China CDC weekly2022，4，14： | 6 |
| 2 | Pt3Ag alloy wavy nanowires as highly effective electrocatalysts for ethanol oxidation reaction显示文摘Direct ethanol fuel cell(DEFC)has received tremendous research interests because of the more convenient storage and transportation of ethanol vs.compressed hydrogen.However,the electrocatalytic ethanol oxidation reaction typically requires precious metal catalysts and is plagued with relatively high over potential and low mass activity.Here we report the synthesis of Pt3Ag alloy wavy nanowires via a particle attachment mechanism in a facile solvothermal process.Transmission microscopy studies and elemental analyses show highly wavy nanowire structures with an average diameter of 4.6±1.0 nm and uniform Pt3Ag alloy formation.Electrocatalytic studies demonstrate that the resulting alloy nanowires can function as highly effective electrocatalysts for ethanol oxidation reactions(EOR)with ultrahigh specific activity of 28.0 mA/cm^2 and mass activity of 6.1 A/mg,far exceeding that of the commercial Pt/carbon samples(1.10 A/mg).The improved electrocatalytic activity may be partly attributed to partial electron transfer from Ag to Pt in the Pt3Ag alloy,which weakens CO binding and the CO poisoning effect.The one-dimensional nanowire morphology also contributes to favorable charge transport properties that are critical for extracting charge from catalytic active sites to external circuits.The chronoamperometry studies demonstrate considerably improved stability for long term operation compared with the commercial Pt/C samples,making the Pt3Ag wavy nanowires an attractive electrocatalyst for EOR. | Xiaoyang Fu Chengzhang Wan Aixin Zhang Zipeng Zhao Huaixun Huyan Xiaoqing Pan Shuaijing Du Xiangfeng Duan Yu Huang | 2020 | Nano Research2020，13，5： | 5 |
| 3 | Heavy Metal Contamination in Farmland Soil and Bioremediation Measures: A Case Study of the Mining Area in Shaoguan显示文摘With the rapid development of mining,the soil heavy metal contamination is increasingly serious in Shaoguan,directly affecting the production of crops. This paper analyzes the farmland soil heavy metal contamination in the mining area of Shaoguan and the causes of heavy metal contamination in recent years,brings forward the bioremediation measures to control soil heavy metal contamination,and points out the development direction of bioremediation in farmland soil heavy metal contamination in the mining area. | Xiangfeng WEI Yongxian LIU Liping PAN | 2016 | Asian Agricultural Research2016，8，7： | 5 |
| 4 | Damage characteristics and catastrophic failure mechanism of coal rock induced by gas adsorption under compression显示文摘To reveal the damage characteristics and catastrophic failure mechanism of coal rock caused by gas adsorption,physical tests and theoretical methods are employed.The results show that adsorption swelling can damage coal rock,which can be distinguished by fractal dimension.A fitting relationship between the adsorption damage and fractal dimension is proposed by experimental testing and theoretical analysis.High gas adsorption pressure proves to be the dominant factor that leads to coal failure softening and gas outburst disasters.Three main parameters concerning adsorption damage include the change rate of released energy density,the transition difference in the post-peak acoustic emission(AE)b value and the change rate of cumulative AE energy.Results show that all the three parameters present a step-type decreasing change with the increase in fractal dimension,and the fractal dimension shows a linear relationship within the same failure mode.Finally,a method is proposed to evaluate coal rock disaster transformation,based on the aforementioned three main parameters of adsorption damage. | Xiaochun Xiao Lei Wang Jun Xu Xiangfeng Lv Pengfei Guo Yishan Pan | 2020 | Journal of Rock Mechanics and Geotechnical Engineering2020，12，3： | 3 |
| 5 | Remediation Technology for Combined Pollution of Lead and Cadmium in Farmland Soil显示文摘At present,the problem of heavy metal pollution in farmland in southern China is serious. Especially,the cadmium and lead are two heavy metal elements with serious pollution and great harm to human body. This paper reviewed some common methods and materials used in the control of cadmium and lead pollution in farmland soil. Then,it discussed the problems in the repair of cadmium and lead pollution in farmland soil. It came up with the future research direction,to provide references for remediation of lead and cadmium pollution in farmland soil. | Jun TAN Yongxian LIU Xiangfeng WEI Yanfei HUANG Liumei XIONG Liping PAN Jinping CHEN Bin LIU Chaolan ZHANG | 2018 | Asian Agricultural Research2018，10，9： | 3 |
| 6 | Multivalent manganese oxides with high electrocatalytic activity for oxygen reduction reaction显示文摘A noble-metal-free catalyst based on both Mn3O4 and MnO was prepared by using the dielectric barrier discharge technique at moderate temperature.The prepared catalyst shows a higher electrocatalytic activity towards the oxygen reduction reaction than the catalyst prepared by using the traditional calcination process.The enhanced activity could be due to the coexistence of manganese ions with different valences,the higher oxygen adsorption capacity,and the suppressed aggregation of the catalyst nanoparticles at moderate temperature.The present work would open a new way to prepare low-cost and noble-metal-free catalysts at moderate temperature for more efficient electrocatalysis. | Xiangfeng Peng Zhenhai Wang Zhao Wang Yunxiang Pan | 2018 | Frontiers of Chemical Science and Engineering2018，12，4： | 1 |
| 7 | Ordering unicyclic graphs with respect to Hosoya indices and Merrifield-Simmons indices 显示文摘 | YE Yali PAN Xiangfeng LIU Huiqing | 2008 | MATCH Commun Math Comput Chem2008，59，： | 1 |
| 8 | Sharp lower bounds for general Randic index of trees with a given size of matching显示文摘 | Pan Xiangfeng Liu Huiqing | 2005 | Match Commun Math Comput Chem2005，54，： | 1 |
| 9 | On the Randic index of unicyclic conjugated molecules显示文摘 | Liu Huiqing Pan Xiangfeng Xu Junming | 2006 | Journal of Mathematical Chemistry2006，40，2： | 1 |
| 10 | The first local case of mpox caused by an imported case in the Chinese mainland显示文摘Monkeypox (mpox) is a zoonotic disease caused by the mpox virus (MPXV) that has been primarily limited to Central and West African nations since its discovery. The recent spread of the West African lineage of MPXV in historically unaffected countries has raised concerns for global public health. Despite a significant decrease in global mpox cases, there is still a risk of a global resurgence. This study reports the first local case of mpox caused by an imported case in the Chinese mainland. Polymerase chain reaction (PCR) diagnosed the two cases, and the viral genomes were obtained by next-generation sequencing. Genomic analysis revealed that the two strains shared an identical genome sequence and belonged to the B.1.3 branch of the West African lineage, which is the first local case of mpox caused by an imported case in the Chinese mainland, highlighting the potential threat of mpox in China and the immediate need for adequate surveillance measures. | Daitao Zhang Xiao Qi Fu Li Yanhui Chu Ke Wu Jia Li Xin Meng Xiangfeng Dou Zhenyong Ren Haoyuan Jin Shuang Li Yulan Sun Yanwei Chen Renqing Li Dan Li Weihong Li Yang Yang Yang Pan Wenjie Tan Quanyi Wang | 2023 | Biosafety and Health2023，5，4： | 1 |
| 11 | Ordering unicyclic graphs with respect to Hosoya indices and Merrifield- Simmons indices显示文摘 | Ye Yali Pan Xiangfeng Liu Huiqing | 2008 | MATCH Commun Math Comput Chem2008，59，： | 1 |
| 12 | A Retrospective Modeling Study of the Targeted Non-Pharmaceutical Interventions During the Xinfadi Outbreak in the Early Stage of the COVID-19 Pandemic — Beijing, China, 2020显示文摘Summary What is already known about this topic?China has repeatedly contained multiple severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)outbreaks through a comprehensive set of targeted nonpharmaceutical interventions(NPIs).However,the effectiveness of such NPIs has not been systematically assessed. | Yan Wang Kaiyuan Sun Yang Pan Lan Yi Da Huo Yanpeng Wu Shuaibing Dong Jinxin Guo Xiangfeng Dou Wei Wang Shuangsheng Wu Xufang Bai Hongjie Yu Quanyi Wang | 2023 | China CDC weekly2023，5，5： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员