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18篇 您的检索式:作者名="Yanbin QI"
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1Effect of urbanization on the winter precipitation distribution in Beijing area显示文摘According to the urbanization extent of Beijing area, and with 1980 as a turning point, the duration from 1961 to 2000 is divided into two periods: one is defined as the slow urbanization period from 1961 to 1980, and other one as the fast urbanization period from 1981 to 2000. Based on the 40-year’s precipi-tation data of 14 standard weather stations in Beijing area, the effect of urbanization on precipitation distribution is studied. It is found that there has been a noticeable and systematic change of winter precipitation distribution pattern between these two periods in Beijing area: in the slow urbanization period, the precipitation in the southern part of Beijing is more than that in the northern part; but in the fast urbanization period, the precipitation distribution pattern is reverse, i.e. the precipitation in the southern part is less than that in the northern part; But in other seasons, the precipitation distribution pattern did not change remarkably in general. The possible cause resulting in the change of winter precipitation distribution pattern, might be that with urban area extension, the effects of 'urban heat island' and 'urban dry island' become more and more intensified, and increase hydrometeors evapo-ration below precipitable cloud, and then cause less precipitation received on the ground surface in the downtown and the southern part. It is also noteworthy to further research why the precipitation distri-bution pattern does not change systematically in other seasons except winter after intense urbaniza-tion in Beijing area.WANG XiQuan WANG ZiFa QI YanBin GUO Hu 2009Science China Earth Sciences2009,52,2:13
2On the Mechanism of a Terrain-Influenced Snow Burst Event during Midwinter in Northeast China显示文摘Short-duration snow bursts with heavy snow represent one type of hazardous weather in winter which can be easily missed by the winter weather warnings but often results in great hazards.In this paper,the mechanism for the occurrence of such events was investigated with the aid of a localized terrain-influenced snow burst event in Northeast China.The snow burst was produced by an eastward-moving cold-frontal snowband which encountered the downstream complex terrain of the Changbai Mountains and intensified.To ascertain the role of orography on the snow burst,numerical experiments,together with a parallel sensitivity experiment removing Changbai Mountains,were performed to attempt to distinguish the contributions of cold-frontal system and orographic effects to produce the heavy snow.Diagnosis showed that without the influence of Changbai Mountains,the release of conditional instability(CI)and inertial instability(II)within a weak frontogenetical environment was responsible for the snowband maintenance.Orographic effects played important roles in enhancing the snowband and increasing the snowfall intensities.The enhancement mechanism was related to the interactions of the cold-frontal snowband and the topography.On the one hand,orographic frontogenesis and persistent ascent,created by orographic gravity waves over the terrain,greatly enhanced the orographic lifting.The intensification of the lifting promoted the release of CI and thus enhanced the snowfall.On the other hand,pre-existing orographic instabilities were released due to the passing of the cold-frontal snowband,which could also serve to intensify the snowband over terrain and thus increase the snowfall.Na LI Baofeng JIAO Lingkun RAN Xinyong SHEN Yanbin QI 2021Advances in Atmospheric Sciences2021,38,5:4
3A portable viable Salmonella detection device based on microfluidic chip and recombinase aided amplification显示文摘creening of foodborne pathogens is important to prevent contaminated foods from their supply chains.n this study, a portable detection device was developed for rapid, sensitive and simple detection of viable almonella using a finger-actuated microfluidic chip and an improved recombinase aided amplification (RAA) assay. Improved propidium monoazide(PMAxx) was combined with RAA to enable this device to distinguish viable bacteria from dead ones. The modification of PMAxx into dead bacteria, the magnetic xtraction of nucleic acids from viable bacteria and the RAA detection of extracted nucleic acids were performed using the microfluidic chip on its supporting device by finger press-release operations. The fluorescent signal resulting from RAA amplification of the nucleic acids was collected using a USB camera nd analyzed using a self-developed smartphone App to quantitatively determine the bacterial concenration. This device could detect Salmonella typhimurium in spiked chicken meats from 1.3 × 10^(2) CFU/m L o 1.3 × 10^(7) CFU/m L in 2 h with a lower detection limit of 130 CFU/m L, and has shown its potential for on-site detection of foodborne pathogens.Wuzhen Qi Siyuan Wang Lei Wang Xinge Xi Shangyi Wu Yanbin Li Ming Liao Jianhan Lin 2023Chinese Chemical Letters2023,34,2:2
4Multi-locus association study of schizophrenia susceptibility genes with a posterior probability method显示文摘Schizophrenia is a serious neuropsychiatric illness affecting about 1% of the world’s population. It is considered a complex inheritance disorder. A number of genes are involved in combination in the etiology of the disorder. Evidence implicates the altered dopaminergic trans- mission in schizophrenia. In the present study, in order to identify susceptibility genes for schizophrenia in dopaminergic metabolism, we analyzed 59 single nucleotide polymorphisms (SNPs) in 24 genes of the dopaminergic pathway among 82 unrelated patients with schizophre- nia and 108 matched normal controls. Considering that traditional single-locus association stud- ies ignore the multigenic nature of complex diseases and do not take into account possible in- teractions between susceptibility genes, we proposed a multi-locus analysis method, using the posterior probability of morbidity as a measure of absolute disease risk for a multi-locus genotype combination, and developed an algorithm based on perturbation and average to detect the sus- ceptibility multi-locus genotype combinations, as well as to repress noise and avoid false positive results at our best. A three-locus SNP genotype combination involved in the interactions of COMT and ALDH3B1 genes was detected to be significantly susceptible to schizophrenia.SUN Xiangqing 1* , JIA Yanbin 2* , ZHANG Xuegong 1 , XU Qi 2 , SHEN Yan 2 & LI Yanda 1 1. Ministry of Education (MOE) Key Laboratory of Bioinformatics at Tsinghua University Department of Automation, Tsinghua University, Beijing 100084, China 2. National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China 2005Science China(Life Sciences)2005,48,3:2
5TiC/C core/shell nanowires arrays as advanced anode of sodium ion batteries显示文摘High-perfo rmance anodes of sodium ion batteries(SIBs)largely depends on rational architecture design and binder-free smart hybridization.Herein,we report TiC/C core/shell nanowires arrays prepared by a one-step chemical vapor deposition(CVD)method and apply it as the anode of SIBs for the first time.The conductive TiC core is intimately decorated with carbon shell.The as-obtained TiC/C nanowires are homogeneously grown on the substrate and show core/shell heterostructure and porous architecture with high electronic conductivity and reinforced stability.Owing to these merits,the TiC/C electrode displays good rate performance and outstanding cycling performance with a capacity of 135.3 mAh/g at 0.1 A/g and superior capacity retention of 90.14%after 1000 cycles at 2 A/g.The reported strategy would provide a promising way to construct binder-free arrays electrodes for sodium ion storage.Yanbin Shen Yahao Li Shengjue Deng Guoxiang Pan Qinqin Xiong Xiaokun Ding Yangfan Lu Qi Liu Xinhui Xia Xiuli Wang Jiangping Tu 2020Chinese Chemical Letters2020,31,3:2
6Situations and Countermeasures on Veterinary drug residues and Detection to Animal Material Food of Entry-Exit Trade显示文摘With the people's lives improving,the demands of livestock products on the import and export aspects were growing. Veterinary drug residues as the important factor which might influence animal products safety has become a major concern. In this paper,the status quo and inspection of the veterinary drug residue and the corresponding control measures were put forward.Hua YU Yanbin QI Yubao YAN Jianqiang YE Hua WU Diqin CHEN Yang FEI 2013Asian Agricultural Research2013,5,3:1
7Risk assessment for sustainable food security in China according to integrated food security: Taking Dongting Lake area for example显示文摘Qi Xiaoxing Liu Liming Liu Yanbin 2013Environment Monitor Assess2013,185,6:1
8Simulation design of fuze warhead system of air defense missile at very low altitude显示文摘A novel simulation method for fuze warhead system(FWS) at very low altitude flight is proposed to solve adaptability issues of the traditional one in the naval battle. Firstly, a simulation system framework is presented. Then the detailed implementation of a novel general fuze model, a novel sea echo model and a novel warhead dynamic effectiveness power field algorithm including the simulation system are presented. Finally, simulation results show good performance of the proposed method. The proposed method can simulate the echo signal when the complex fuze antennas detect target and the sea at the same time, and can truly reflect the target positions hit by the warhead fragments. The proposed method can solve the existing problems in the FWS simulation system.Qi Zhao Guangyu Du Bin Zhang Yanbin Zhai Yuruo Shi 2017Journal of Systems Engineering and Electronics2017,28,3:1
9Redirecting dynamic structural evolution of nickel-contained RuO_(2) catalyst during electrochemical oxygen evolution reaction显示文摘Electrochemical oxygen evolution reaction (OER) is a main efficiency bottleneck of water electrolysis.Commercial ruthenium oxide (RuO_(2)) catalyst displays remarkable activities but poor stability for OER.The instability stems from lattice oxygen oxidation,resulting in the oxidation of Ru^(4+) to soluble Ru^(4+)(x>4) species.Herein,we redirect dynamic structural evolution of Ru-based catalysts through introducing oxidized nickel (Ni) components.By virtue of comprehensive structural characterizations,such as high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM),X-ray photoelectron spectroscopy (XPS),operando Raman and so forth,it is demonstrated that when the atomic content of Ni exceeds that of ruthenium (Ru),the Ni components can efficiently inhibit the Ru^(4+) oxidation and structural collapse.Density functional theory (DFT) calculations suggest that the introduction of Ni component hinders the formation of oxygen vacancies,and makes lattice oxygen mediated mechanism turn to adsorbate evolution mechanism,which eventually improves the stability.The optimized nickel-contained RuO_(2) catalyst delivers an effective reactivity with an overpotential of less than 215 m V to attain 10 m A cm^(-2) and remarkable stability with only 5 mV increment after 5000 potential cycles.This work provides insights into the origin of dynamic structural evolution of transition-metalmodified RuO_(2) electrocatalysts.Yuhan Zhao Menghua Xi Yanbin Qi Xuedi Sheng Pengfei Tian Yihua Zhu Xiaoling Yang Chunzhong Li Hongliang Jiang 2022Journal of Energy Chemistry2022,31,6:1
10Association of CXCR1 and 2 expressions with gastric cancer metastasis in ex vivo and tumor cell invasion in vitro显示文摘Zhen Li Ying Wang Suiwei Dong Chunlei Ge Yanbin Xiao Ruilei Li Xiang Ma Yuanbo Xue Qi Zhang Juan Lv Qinghua Tan Zhitao Zhu Xin Song Jing Tan 2014Cytokine2014,,:1
11High ceramic content composite solid-state electrolyte films prepared via a scalable solvent-free process显示文摘The development of high-performance solid-state electrolyte(SSE)films is critical to the practical application of all-solid-state Li metal batteries(ASSLMBs).However,developing high-performance free-standing electrolyte films remains a challenging task.In this work,we demonstrate a novel scalable solvent-free process for fabricating high ceramic content composite solid-state electrolyte(HCCSE)films.Specifically speaking,a mixture of ceramic and polymer is dry mixed,fibered,and calendered into a free-standing porous ceramic film,on which polymer precursor is coated and polymerized to bridge the inorganic ceramic particles,resulting in a flexible HCCSE film with a ceramic content of up to 80 wt.%.High ceramic content not only leads to high ionic conductivity but also brings good mechanical properties;while the organic phase enables electrode|electrolyte interfacial stability.When Li_(10)GeP_(2)S_(12)(LGPS)and polymeric ionic liquid-based solid polymer electrolytes(PIL-SPEs)were used as the inorganic and organic phases,respectively,the room temperature ionic conductivity of the resulted HCCSE reaches 0.91 mS·cm−1.Based on this HCCSE,Li||Li symmetric battery cycled stably for more than 2,400 h with ultra-low overpotential,and ASSLMBs with different cathodes(LiFePO4 and sulfurized polyacrylonitrile(PAN-S))present small polarization and decent cyclability at room temperature.This work provides a novel scalable solvent-free strategy for preparing high-performance freestanding composite solid-state electrolyte(CSE)film for room temperature ASSLMBs.Daiqian Chen Chenji Hu Qi Chen Guoyong Xue Lingfei Tang Qingyu Dong Bowen Chen Fengrui Zhang Mingwen Gao Jingjing Xu Yanbin Shen Liwei Chen 2023Nano Research2023,16,3:0
12Precise design strategies of nanomedicine for improving cancer therapeutic efficacy using subcellular targeting显示文摘Therapeutic efficacy against cancer relies heavily on the ability of the therapeutic agents to reach their final targets.The optimal targets of most cancer therapeutic agents are usually biological macromolecules at the subcellular level,which play a key role in carcinogenesis.Therefore,to improve the therapeutic efficiency of drugs,researchers need to focus on delivering not only the therapeutic agents to the target tissues and cells but also the drugs to the relevant subcellular structures.In this review,we discuss the most recent construction strategies and release patterns of various cancer cell subcellular-targeting nanoformulations,aiming at providing guidance in the overall design of precise nanomedicine.Additionally,future challenges and potential perspectives are illustrated in the hope of enhancing anticancer efficacy and accelerating the translational progress of precise nanomedicine.Xianglei Fu Yanbin Shi Tongtong Qi Shengnan Qiu Yi Huang Xiaogang Zhao Qifeng Sun Guimei Lin 2020Signal Transduction and Targeted Therapy2020,5,1:0
13Preparation of carbon nanotube films towards mechanical and electrochemical energy storage显示文摘Due to unique and excellent properties,carbon nanotubes(CNTs)are expected to become the next-generation critical engineering mechanical and energy storage materials,which will play a key role as building blocks in aerospace,military equipment,communication sensing,and other cutting-edge fields.For practical application,the assembled macrostructures from individual CNTs are the common paradigms such as fibers or films.As the main representative,CNT films can not only retain the unique properties of their CNTs components,but also are more likely for mass-production than other macrostructures.Therefore,in this review,we focus on preparation of CNT films and discuss their emerging applications in the field of mechanical and electrochemical energy storage/conversion.Firstly,different preparation processes are systematically summarized.Then we introduce some typical strategies to improve their mechanical performances besides strengthening mechanism.Based on the progress of mass-production and performance optimization,we further discuss their potential utilization in mechanical and electrochemical energy storage/conversion devices.Finally,future perspectives for the development of CNT films in both production and application are proposed.We hope that this review will shed light on the preparation/assembly of CNT films and integrated application of excellent properties from individual to macroscopic dimensions.Moreover,the preparation and cross-scale application paradigms of CNT films also offer a good model for other macroscopic ordered assemblies of one-dimensional nanomaterials.Yukang Zhu Yanbin Wei Zhenxing Zhu Hongjie Yue Ziying He Qi Zhang Shijun Zhang Fei Wei 2023Nano Research2023,16,11:0
14透射电子显微镜研究低能高剂量氦离子辐照引起非晶6H-SiC微观结构演化过程显示文摘Silicon carbide(SiC)is regarded as an important material in nuclear energy system and semiconductor industry,because of its excellent physical,electronic and optical properties.It is inevitable that dense atomic He atoms produced by(n,)nuclear transmutation reaction.Due to the low solubility of He atoms in SiC,He atoms are easy to be trapped by vacancies to form helium-vacancy clusters.After thermal annealing,helium atoms will escape from vacancies,to form cavities.In semiconductor technology,He implantation-induced cavities have lots of important applications.Therefore,the study of He-implanted SiC is critical.He-implantation-induced cavities have been extensively investigated.He-implantation-induced dislocation loops also have been investigated.Chen et al.observed interstitial-type dislocation loops associated with He bubbles due to the release of bubble interior pressure via emitting interstitials[1].These interstitials agglomerate into dislocation loops.It is consistent with previous results observed in the case of He-implanted 6H-SiC[2].What’s more,Barbot et al.regarded that the growth of the Frank loops lead to the formation of stacking faults,which do not result from the agglomeration of interstitials[3].Li Bingsheng Han Yi Wang Zhiguang Wei Kongfang Shen Tielong Sun Jianrong Yao Cunfeng Gao Ning Gao Xing Pang Lilong Zhu Yabin Chang Hailong Cui Minghuan Luo Peng Sheng Yanbin Zhang Hongpeng Fang Xuesong Zhao Sixiang Jin Jin Huang Yuxuan Liu Chao Tai Pengfei Wang Dong He Wenhao Qi Ming 2017IMP & HIRFL Annual Report2017,,1:0
154-1 Lattice Disorder Produced in GaN by He-ion Implantation显示文摘Because of excellent electronic and optical properties,GaN has been used in the laser diodes,microwave,ultrahigh power switches and other fields.Due to an attractive process for selective region doping of semiconductor devices,ion implantation has widely been applied to GaN fabrication processing.However,ion implantation introduces extensive damage that can degrade the performance,properties as well as lifetimes of the devices.Thus,it is very important to understand the ion-beam damage processes in the fabrication of GaN-based devices.The effects of ion implantation into GaN have been extensively investigated.Li Bingsheng Han Yi Wang Zhiguang Wei Kongfang Shen Tielong Sun Jianrong Yao Cunfeng Gao Ning Gao Xing Pang Lilong Zhu Yabin Chang Hailong Cui Minghuan Luo Peng Sheng Yanbin Zhang Hongpeng Fang Xuesong Zhao Sixiang Jin Jin Huang Yuxuan Liu Chao Tai Pengfei Wang Dong He Wenhao Qi Ming 2016IMP & HIRFL Annual Report2016,,1:0
16东北一次雪飑事件的触发机制研究显示文摘2017年1月26日,中国东北地区发生了一次短时强降雪过程.本文利用ECMWF再分析数据诊断该过程的可能触发机制.分析表明,该过程可分两个阶段:初生阶段降雪远离高地形,低层锋生和有利的辐散场配置激发上升运动释放不稳定;增强阶段雪带接近长白山,低层锋生,地形环流以及与低空急流有关的风切变共同释放锋前不稳定.本文进一步计算了包含广义位温的修正Q矢量方程.结果表明,锋生项对沿湿等熵线的负Q矢量散度贡献较大,而拟涡度项在暖区强风切变区域中比较显著,两项在激发上升运动中同等重要.Baofeng Jiao Lingkun Ran Xinyong Shen Yanbin Qi 2021Atmospheric and Oceanic Science Letters2021,14,2:0
17Steering structural mesoporosity and working microenvironment of Fe-N-C catalysts for boosting cathodic mass transport of zinc-air batteries显示文摘Transition metal-N-C materials have considerably been demonstrated as promising catalysts for cathodic oxygen reduction reaction(ORR)in Zn-air batteries.Current efforts mainly focus on tailoring coordination structure and identifying active sites of metal-N-C materials for ORR,while the mass transport of metal-N-C employed in catalytic layers of working electrodes is seldom engineered.Herein,a Fe-N-C single-atom catalyst featuring high mesoporosity and abundant electrochemically accessible active sites is developed through post-loading Fe species into defective N-doped carbon support.The Fe-N-C single-atom catalyst serving as the air cathode of Zn-air battery delivers a peak power density of 189.9 mW cm^(−2),significantly larger than 114.2 mW cm^(−2) of commercial Pt/C and 162.9 mW cm^(−2) of the Fe-N-C contrast catalyst with low mesoporosity.More importantly,through adding hydrophobic polytetrafluoroethylene(PTFE)nanoparticles in the catalytic layer of air cathode,the peak power density of Fe-N-C single-atom catalyst is further increased to 212.3 mW cm^(−2).The increased peak power density is attributed to the enhancement of O_(2) mass transport,as evidenced by a substantially decreased diffusion layer thickness that is obtained from electrochemical impedance spectroscopy.Hang Shen Yanyan Jia Yanbin Qi Sheng Dai Hongliang Jiang Yihua Zhu Chunzhong Li 2022Science China Chemistry2022,65,8:0
18Construction of the All-region Linkage System for Emergency Management of Agricultural Product Quality and Safety in West China显示文摘Quality and safety of agricultural products are significant for national socioeconomic development,sustainable development,and vital interests of people.To safeguard quality and safety of agricultural products in west China is to safeguard economic safety and ecological safety of the country,public health and social stability,of which an important task is to properly handle emergencies concerning quality and safety of agricultural products.Considering actual conditions of west China,suggestions are given to construct the all-region linkage system for emergency management of agricultural product quality and safety in the local area,enhance the all-region linkage,and improve the linkage efficiency.Hua YU Yanbin QI Yubao YAN 2013Asian Agricultural Research2013,5,11:0
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