|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Effect of different concentrations of surfactant on the wettability of coal by molecular dynamics simulation显示文摘Anionic surfactant sodium dodecyl benzene sulfonate(SDBS)at varying concentrations was selected to investigate the influence on the wettability of Zhaozhuang Coal by molecular dynamics simulation.Six groups of water/surfactant/coal systems with different concentrations were constructed.The influence of surfactant with different concentrations on the wettability of coal was concluded by analyzing various properties from the energetic behaviors to the dynamic characteristics.The results show that the interfacial tension decreases sharply and then rises slowly with the increase of SDBS surfactant concentration,obtaining that surfactants can obviously reduce the interfacial tension.The surfactant molecules could be detected at the water/coal interface through analyzing the system’s relative concentration distribution.In addition,the difference in the wettability of surfactants on coal surfaces is caused by the spatial distribution differences of alkyl chains and the benzene ring of the surfactant molecules.And the negative interaction energy between SDBS and the coal surface indicates that adsorption process is spontaneous.Furthermore,it is of great practical significance for improving the dust reduction effect and reducing the disaster of coal dust by exploring the effects of surfactant molecules on the wettability of coal. | Junqing Meng Feifei Yin Shichao Li Ruquan Zhong Zeyuan Sheng Baisheng Nie | 2019 | International Journal of Mining Science and Technology2019，29，4： | 20 |
| 2 | Effect of turbulence models on predicting convective heat transfer to hydrocarbon fuel at supercritical pressure显示文摘A variety of turbulence models were used to perform numerical simulations of heat transfer for hydrocarbon fuel flowing upward and downward through uniformly heated vertical pipes at supercritical pressure. Inlet temperatures varied from 373 K to 663 K, with heat flux ranging from 300 k W/m^2 to 550 k W/m^2. Comparative analyses between predicted and experimental results were used to evaluate the ability of turbulence models to respond to variable thermophysical properties of hydrocarbon fuel at supercritical pressure. It was found that the prediction performance of turbulence models is mainly determined by the damping function, which enables them to respond differently to local flow conditions. Although prediction accuracy for experimental results varied from condition to condition, the shear stress transport(SST) and launder and sharma models performed better than all other models used in the study. For very small buoyancy-influenced runs, the thermal-induced acceleration due to variations in density lead to the impairment of heat transfer occurring in the vicinity of pseudo-critical points, and heat transfer was enhanced at higher temperatures through the combined action of four thermophysical properties: density, viscosity, thermal conductivity and specific heat. For very large buoyancyinfluenced runs, the thermal-induced acceleration effect was over predicted by the LS and AB models. | Tao Zhi Cheng Zeyuan Zhu Jianqin Li Haiwang | 2016 | Chinese Journal of Aeronautics2016，29，5： | 8 |
| 3 | Constrained Weighted Least Squares Location Algorithm Using Received Signal Strength Measurements显示文摘Determine the location of a target has gained considerable interest over the past few years. The Received Signal Strength(RSS) measurements and Differential RSS(DRSS) measurements can be converted to distance or distance ratio estimates for constructing a set of linear equations. Based on these linear equations, a constrained weighted least Squares(CWLS) algorithm for target localization is derived. In addition, an iterative technique based on Newton's method is utilized to give a solution. The covariance and bias of the CWLS algorithm is derived using perturbation analysis. Simulation shows that the proposed estimator achieves better performance than existing algorithms with reasonable complexity. | LI Zeyuan | 2016 | China Communications2016，13，4： | 4 |
| 4 | Genomic Surveillance for SARS-CoV-2 Variants of Concern from Imported COVID-19 Cases-the Mainland of China,2021显示文摘Introduction:After the epidemic in Wuhan City was brought under control in 2020,local outbreaks of coronavirus disease 2019(COVID-19)in the mainland of China were mainly due to imported COVID-19 cases.The ongoing evolution of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)has continued to generate new variants.Some have been designated as variants of concern(VOCs)by the World Health Organization(WHO).To better assess the role of imported SARS-CoV-2 surveillance and the prevalence of VOCs in 2021,the genomic surveillance data of SARS-CoV-2 from imported COVID-19 cases of 2021 in the mainland of China were analyzed.Methods:The analyses included the number of sequence submissions,time of sequence deposition,and time of detection of the VOCs in order to determine the timeliness and sensitivity of the surveillance.The proportions of VOCs were analyzed and compared with data from the Global Initiative of Sharing All Influenza Data(GISAID).Results:A total of 3,355 sequences of imported cases were submitted from 29 provincial-level administrative divisions,with differences in the number of sequence submissions and median time of sequence deposition.A total of 2,388 sequences with more than 90%genomic coverage were used for lineage analysis.The epidemic trend from Alpha to Delta to Omicron in imported cases was consistent with that in the GISAID.In addition,VOCs from imported cases were usually identified after WHO designation and before causing local outbreaks.Conclusions:The global distribution of SARSCoV-2 VOCs changed rapidly in 2021.Robust genomic surveillance of the imported SARS-CoV-2 in the mainland of China is of great significance.Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),the etiological agent of coronavirus disease 2019(COVID-19),is constantly mutating under the different circumstances of global transmission(1).The emerging SARS-CoV-2 variants may have potential adverse impacts on epidemic traits and severity.To some extent,it is also capable of escaping natural and vaccine-induced immunity(2–3).Some of them were designated as variants of concern(VOCs)by the World Health Organization(WHO)(4).Therefore,robust surveillance is essential to assess the evolution of viruses in real time.After the epidemic in Wuhan City was brought under control in 2020,several COVID-19 outbreaks in the mainland of China have been proven to relate to SARS-CoV-2 contaminated cold-chain products(5–7),while most were caused by transmission through imported cases on flights,at isolation facilities,or in designated hospitals(8–9).Therefore,genomic surveillance for SARS-CoV-2 from imported cases is of great significance for monitoring the risk of different variants that were imported into the mainland of China,assessing the risk of importation-associated domestic spread,and helping guide public health interventions.On March 17,2020,the China CDC released a notice and launched genomic surveillance for SARS-CoV-2 from imported COVID-19 cases nationwide.The laboratories of provincial CDCs were required to conduct SARS-CoV-2 whole-genome sequencing for samples from imported cases and submit the genomic sequences to the China CDC in time.This study includes the analysis of genomic surveillance data of imported SARS-CoV-2 cases of 2021 from the mainland of China. | Yenan Feng Xiang Zhao Zhixiao Chen Kai Nie Zeyuan Yin Ying Xia Ji Wang Peihua Niu Ruhan A Lili Li Dayan Wang Wenjie Tan Xuejun Ma Shiwen Wang Huanyu Wang George F.Gao Cao Chen Wenbo Xu | 2022 | China CDC weekly2022，4，31： | 1 |
| 5 | Autonomous Assembly Method of 3-Arm Robot to Fix the Multipin and Hole Load Plate on a Space Station显示文摘Using space stations for a large number of observation, exploration, and research is a necessary way to fully develop spacetechnology. It is a necessary means of space experiment to install the extravehicular experimental load by using the loadplate. However, the extravehicular environment is full of danger, which poses a threat to the health and even safety ofastronauts. Using robots to replace astronauts to complete this task can effectively reduce the threat to astronauts. Aimingat the problem that the configurations of existing space robots have difficulty in balancing the contradiction betweencomplexity and dexterity, our previous work proposes a 12-DOF 3-arm robot and preliminarily explores the feasibility ofits large-scale ability. This paper focus on the 8-DOF redundant dexterous manipulator composed of 2 of the robot arms.In view of the difficulties in solving the inverse kinematics of the redundant manipulator, the challenges of complexenvironmental lighting, and difficulties of matching multiple groups of holes and pins in the load plate assembly task, theresearch on the autonomous assembly of the load plate is carried out. The main work is as follows: (a) A variable D-Hparameter inverse kinematics solution method is proposed, which lays a foundation for humanoid dexterous operationplanning of the robot. (b) An autonomous operation method based on visual guidance and variable parameter admittancecontrol is proposed. Finally, the safety and robustness of the robot in the autonomous assembly of the load plate withmultipins and holes are successfully verified by experiments. | Zeyuan Sun Hong Yang Que Dong Yang Mo Hui Li Zhihong Jiang | 2021 | Space(Science & Technology)2021，，1： | 1 |
| 6 | Application of high-speed counter-current chromatography coupled with high performance liquid chromatography for the separation and purification of Quercetin-3-O-sambubioside from the leaves of Nelumbo nucifera显示文摘Quercetin-3-O-sambubioside[Quercetin-3-O-β-D-xylopyranosyl(1→2)-β-D-glucopyranoside]was separated and purified by semi-preparative high-speed counter-current chromatography(HSCCC)with a twophase-solvent system composed of ethyl acetate-nbutanol-water(4∶1∶5,v/v)from the leaves of Nelumbo nucifera(Lotus).A total of 5.0 mg of the targeted compound with a purity of 98.6%as determined by high performance liquid chromatography(HPLC)was obtained from 100 mg of the crude extract cleaned up by AB-8 macroporous resin in a one-step separation.Quercetin-3-O-sambubioside was a novel flavonoid glycoside from the leaves of Nelumbo nucifera,and its chemical structure was identified by means of ESI-MS,1D NMR and 2D NMR. | Shengguo DENG Zeyuan DENG Yawei FAN Jing LI Rong LIU Dongmei XIONG | 2009 | Frontiers of Chemical Science and Engineering2009，3，4： | 1 |
| 7 | An MAP kinase interacts with LHK1 and regulates nodule organogenesis in Lotus japonicus显示文摘Symbiosis receptor-like kinase(SymRK) is a key protein mediating the legume-Rhizobium symbiosis.Our previous work has identified an MAP kinase kinase,SIP2,as a SymRK-interacting protein to positively regulate nodule organogenesis in Lotus japonicus,suggesting that an MAPK cascade might be involved in Rhizobium-legume symbiosis.In this study,LjMPK6 was identified as a phosphorylation target of SIP2.Stable transgenic L.japonicus with RNAi silencing of LjMPK6 decreased the numbers of nodule primordia(NP) and nodule,while plants overexpressing LjMPK6 increased the numbers of nodule,infection threads(ITs),and NP,indicating that LjMPK6 plays a positive role in nodulation.LjMPK6 could interact with a cytokinin receptor,LHK1 both in vivo and in vitro.LjMPK6 was shown to compete with LHP1 to bind to the receiver domain(RD) of LHK1 and to downregulate the expression of two LjACS(1-aminocyclopropane-1-carboxylic acid synthase) genes and ethylene levels during nodulation.This study demonstrated an important role of LjMPK6 in regulation of nodule organogenesis and ethylene production in L.japonicus. | Jun Yin Xiaomin Guan Heng Zhang Longxiang Wang Hao Li Qing Zhang Tao Chen Zeyuan Xu Zonglie Hong Yangrong Cao Zhongming Zhang | 2019 | Science China(Life Sciences)2019，62，9： | 1 |
| 8 | Surveillance and Analysis of SARS-CoV-2 Variant Importation—China,January–June 2022显示文摘Introduction:The severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)Omicron variant is the dominant circulating strain worldwide.To assess the importation of SARS-CoV-2 variants in the mainland of China during the Omicron epidemic,the genomic surveillance data of SARS-CoV-2 from imported coronavirus disease 2019(COVID-19)cases in the mainland of China during the first half of 2022 were analyzed.Methods:Sequences submitted from January to July 2022,with a collection date before June 30,2022,were incorporated.The proportions of SARS-CoV-2 variants as well as the relationships between the origin and destination of each Omicron imported case were analyzed.Results:4,946 sequences of imported cases were submitted from 27 provincial-level administrative divisions(PLADs),and the median submission interval was within 1 month after collection.In 3,851 Omicron sequences with good quality,1 recombinant(XU)and 4 subvariants under monitoring(BA.4,BA.5,BA.2.12.1,and BA.2.13)were recorded,and 3 of them(BA.4,BA.5,and BA.2.12.1)caused local transmissions in the mainland of China later than that recorded in the surveillance.Omicron subvariants dominated in the first half of 2022 and shifted from BA.1 to BA.2 then to BA.4 and BA.5.The percentage of BA.2 in the imported SARS-CoV-2 surveillance data was far higher than that in the Global Initiative on Sharing All Influenza Data(GISAID).The imported cases from Hong Kong Special Administrative Region,China,accounted for 32.30%of Omicron cases sampled,and 98.71%of them were BA.2.Conclusions:The Omicron variant showed the intra-Omicron evolution in the first half of 2022,and all of the Omicron subvariants were introduced into the mainland of China multiple times from multiple different locations. | Yenan Feng Xiang Zhao Zeyuan Yin Changcheng Wu Zhixiao Chen Kai Nie Ruhan A Lili Li Peihua Niu Ji Wang Yuchao Wu Shiwen Wang Dayan Wang Wenjie Tan Huanyu Wang Xuejun Ma George FGao Cao Chen Wenbo Xu | 2022 | China CDC weekly2022，4，50： | 1 |
| 9 | All‐Metallic Vertical Transistors Based on Stacked Dirac Materials显示文摘 | Yangyang Wang Zeyuan Ni Qihang Liu Ruge Quhe Jiaxin Zheng Meng Ye Dapeng Yu Junjie Shi Jinbo Yang Ju Li Jing Lu | 2015 | Adv. Funct. Mater2015，，： | 1 |
| 10 | Microwave - assisted extraction of phenolics with maximal antioxidant activities in tomatoes 显示文摘 | Li Hongyan Deng Zeyuan Wu Tao | 2012 | Food Chemistry2012，130，4： | 1 |
| 11 | High-performance junction field-effect transistor based on black phosphorus/β-Ga2O3 heterostructure显示文摘Black phosphorous(BP),an excellent two-dimensional(2D)monoelemental layered p-type semiconductor material with high carrier mobility and thickness-dependent tunable direct bandgap structure,has been widely applied in various devices.As the essential building blocks for modern electronic and optoelectronic devices,high quality PN junctions based on semiconductors have attracted widespread attention.Herein,we report a junction field-effect transistor(JFET)by integrating narrow-gap p-type BP and ultra-wide gap n-typeβ-Ga2O3 nanoflakes for the first time.BP andβ-Ga2O3 form a vertical van der Waals(vdW)heterostructure by mechanically exfoliated method.The BP/β-Ga2O3 vdW heterostructure exhibits remarkable PN diode rectifying characteristics with a high rectifying ratio about 107 and a low reverse current around pA.More interestingly,by using the BP as the gate andβ-Ga2O3 as the channel,the BP/β-Ga2O3 JFET devices demonstrate excellent n-channel JFET characteristics with the on/off ratio as high as 107,gate leakage current around as low as pA,maximum transconductance(gm)up to 25.3μS and saturation drain current(IDSS)of 16.5μA/μm.Moreover,it has a pinch-off voltage of–20 V and a minimum subthreshold swing of 260 mV/dec.These excellent n-channel JFET characteristics will expand the application of BP in future nanoelectronic devices. | Chang Li Cheng Chen Jie Chen Tao He Hongwei Li Zeyuan Yang Liu Xie Zhongchang Wang Kai Zhang | 2020 | Journal of Semiconductors2020，41，8： | 1 |
| 12 | A single-cell transcriptome atlas of the aging human and macaque retina显示文摘The human retina is a complex neural tissue that detects light and sends visual information to the brain.However,the molecular and cellular processes that underlie aging primate retina remain unclear.Here,we provide a comprehensive transcriptomic atlas based on 119520 single cells of the foveal and peripheral retina of humans and macaques covering different ages.The molecular features of retinal cells differed between the two species,suggesting distinct regional and species specializations of the human and macaque retinae.In addition,human retinal aging occurred in a region-and cell-type-specific manner.Aging of human retina exhibited a foveal to peripheral gradient.MYO9A-rods and a horizontal cell subtype were greatly reduced in aging retina,indicating their vulnerability to aging.Moreover,we generated a dataset showing the cell-type-and region-specific gene expression associated with 55 types of human retinal disease,which provides a foundation to understanding of the molecular and cellular mechanisms underlying human retinal diseases.Such datasets are valuable to understanding of the molecular characteristics of primate retina,as well as molecular regulation of aging progression and related diseases. | Wenyang Yi Yufeng Lu Suijuan Zhong Mei Zhang Le Sun Hao Dong Mengdi Wang Min Wei Haohuan Xie Hongqiang Qu Rongmei Peng Jing Hong Ziqin Yao Yunyun Tong Wei Wang Qiang Ma Zeyuan Liu Yuqian Ma Shouzhen Li Chonghai Yin Jianwei Liu Chao Ma Xiaoqun Wang Qian Wu Tian Xue | 2021 | National Science Review2021，8，4： | 1 |
| 13 | Highly pigmented vegetables : Anthocyanin composi-tions and their role in antioxidant activities显示文摘 | Hongyan Li Zeyuan Deng Honghui Zhu | 2012 | FoodResearch International2012，46，： | 1 |
| 14 | Protein security and food security in China显示文摘Food security,the need to meet nutritional requirements,and four main problems for food protein security in China are analyzed.From the perspective of residents’nutritional requirements and balanced dietary patterns,the conclusion is that food security in China is in essence dependent on protein production and security of supply and that fat and carbohydrates supply in China can reach self-sufficiency.Considering the situation of food protein production and consumption in China,policy suggestions are made,which could ensure a balanced supply and demand for food protein and food security in China. | Zheng RUAN Shumei MI Yan ZHOU Zeyuan DENG Xiangfeng KONG Tiejun LI Yulong YIN | 2015 | Frontiers of Agricultural Science and Engineering2015，2，2： | 1 |
| 15 | Effect of green tea and black tea on the blood glucose, the blood triglycefides, and antioxidation in aged rats 显示文摘 | Deng Zeyuan Tao Bingyin Li Xiaolin | 1998 | Journal of Agricultural and Food Chemistry1998，46，10： | 1 |
| 16 | Dietary l-arginine supplementation enhances the immune status in early-weaned piglets显示文摘 | Bie Tan Xinguo G. Li Xiangfeng Kong Ruilin Huang Zheng Ruan Kang Yao Zeyuan Deng Mingyong Xie Izuru Shinzato Yulong Yin Guoyao Wu | 2009 | Amino Acids2009，，2： | 1 |
| 17 | Highly pigmented vegetables: anthocyanin compositions and their role in antioxidant activities显示文摘 | LI Hongyan DENG Zeyuan ZHU Honghui | 2012 | Food Research International2012，46，1： | 1 |
| 18 | Genomic Surveillance for SARS-CoV-2—China,September 26,2022 to January 29,2023显示文摘Introduction:The severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)has generated 2,431 variants over the course of its global transmission over the past 3 years.To better evaluate the genomic variation of SARS-CoV-2 before and after the optimization of coronavirus disease 2019(COVID-19)prevention and control strategies,we analyzed the genetic evolution branch composition and genomic variation of SARS-CoV-2 in both domestic and imported cases in China(the data from Hong Kong and Macao Special Administrative Regions and Taiwan,China were not included)from September 26,2022 to January 29,2023.Methods:Analysis of the number of genome sequences,sampling time,dynamic changes of evolutionary branches,origin,and clinical typing of SARS-CoV-2 variants submitted by 31 provincial-level administrative divisions(PLADs)and Xinjiang Production and Construction Corps(XPCC)was conducted to assess the accuracy and timeliness of SARS-CoV-2 variant surveillance.Results:From September 26,2022 to January 29,2023,20,013 valid genome sequences of domestic cases were reported in China,with 72 evolutionary branches.Additionally,1,978 valid genome sequences of imported cases were reported,with 169 evolutionary branches.The prevalence of the Omicron variants of SARS-CoV-2 in both domestic and imported cases was consistent with that of international epidemic variants.Conclusions:This study provides an overview of the prevalence of Omicron variants of SARS-CoV-2 in China.After optimizing COVID-19 prevention and control strategies,no novel Omicron variants of SARSCoV-2 with altered biological characteristics or public health significance have been identified since December 1,2022. | Shiwen Wang Peihua Niu Qiudong Su Xiaozhou He Jing Tang Ji Wang Yenan Feng Cao Chen Xiang Zhao Zhixiao Chen Wenling Wang Zeyuan Yin Yuchao Wu Changcheng Wu Lili Li Aili Cui Yan Zhang Caiyun Long Xiaoyu Yang Zhongxian Zhang Hong Bo Wenbo Xu SARS-CoV-Genome Working Group | 2023 | China CDC weekly2023，5，7： | 1 |
| 19 | Telluroxides exhibit hydrolysis capacity显示文摘 | Dong Zeyuan Li Xiangqiu Liang Kai | 2007 | J Org Chem2007，72，2： | 1 |
| 20 | Influence of the electronic configuration of the central metal ions on catalytic activity of metal phthalocyanines to Li/SOCl 2 battery显示文摘 | Zhanwei Xu Jianshe Zhao Hejun Li Kezhi Li Zeyuan Cao Jinhua Lu | 2009 | Journal of Power Sources2009，，2： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员