|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | On the boundary slip of fluid flow显示文摘This paper presents a stress controlled boundary slip model and predicts the fluid-solid interface slip in a system of parallel sliding plates or a sphere approaching a smooth plane. The numerical simulation results are in striking agreement with the existing experimental observations. This model assumes that there is a limiting shear stress. No slip occurs if the surface shear stress is smaller than the limiting shear stress, and slip occurs when the surface shear stress equals it. It is found that boundary slip dramatically decreases the hydrodynamic pressure if the two squeezed surfaces have the same slip property. Finally, the hydrodynamic force reaches a saturation status and almost does not decrease any more. Compared with the no-slip solution, hydrodynamic force is found to decrease by over two orders in the case of boundary slip. When the squeezed surfaces have different slip properties, however, the hydrodynamic pressure is mainly controlled by the surface having a smaller surface limiting shear stress, and reduces more slowly compared with the case of two surfaces having the same slip property. Even when one of the surfaces has a zero surface limiting shear stress, a considerable hydrodynamic force still exists. | WU Chengwei MA Guojun | 2005 | Science China(Physics,Mechanics & Astronomy)2005，48，2： | 8 |
| 2 | Recent progress and perspectives on silicon anode:Synthesis and prelithiation for LIBs energy storage显示文摘The ever-increasing environmental/energy crisis as well as the rapid upgrading of mobile devices had stimulated intensive research attention on promising alternative energy storage and conversion devices.Among these devices,alkali metal ion batteries,such as lithium-ion batteries(LIBs) had attracted increasing research attention due to its several advantages including,environmental friendliness,high power density,long cycle life and excellent reversibility.It had been widely used in consumer electronics,electric vehicles,and large power grids et ac.Silicon-based(silicon and their oxides,carbides) anodes had been widely studied.Its several advantages including low cost,high theoretical capacity,natural abundance,and environmental friendliness,which shows great potential as anodes of LIBs.In this review,we summarized the recently progress in the synthetic method of silicon matrix composites.The empirical method for prelithiation of silicon-based materials were also provided.Further,we also reviewed some novel characterization methods.Finally,the new design,preparation methods and properties of these nano materials were reviewed and compared.We hoped that this review can provide a general overview of recent progress and we briefly highlighted the current challenges and prospects,and will clarify the future trend of silicon anode LIBs research. | Yuanxing Zhang Borong Wu Ge Mu Chengwei Ma Daobin Mu Feng Wu | 2022 | Journal of Energy Chemistry2022，31，1： | 7 |
| 3 | Enhancing hydrogen evolution of MoS_(2) basal planes by combining single-boron catalyst and compressive strain显示文摘M0 S2 is a promising candidate for hydrogen evolution reaction(HER),while its active sites are mainly distributed on the edge sites rather than the basal plane sites.Herein,a strategy to overcome the inertness of the M0 S2 basal surface and achieve high HER activity by combining single-boron catalyst and compressive strain was reported through density functional theory(DFT)computations.The ab initio molecular dynamics(AIMD)simulation on B@MoS2 suggests high thermodynamic and kinetic stability.We found that the rather strong adsorption of hydrogen by B@MoS2 can be alleviated by stress engineering.The optimal stress of -7%can achieve a nearly zero value of △Gh(〜-0.084 eV),which is close to that of the ideal Pt-SACs for HER.The novel HER activity is attributed to(i)the Bdoping brings the active site to the basal plane of M0 S2 and reduces the band-gap,thereby increasing the conductivity;(ii)the compressive stress regulates the number of charge transfer between(H)-(B)-(MoS2),weakening the adsorption energy of hydrogen on B@MoS2.Moreover,we constructed a SiN/B@MoS2 heterojunction,which introduces an 8.6%compressive stress for B@MoS2 and yields an ideal AGh-This work provides an effective means to achieve high intrinsic HER activity for M0 S2. | Zhitao Cui Wei Du Chengwei Xiao Qiaohong Li Rongjian Sa Chenghua Sun Zuju Ma | 2020 | Frontiers of physics2020，15，6： | 4 |
| 4 | Hydrodynamics of slip wedge and optimization of surface slip property显示文摘The hydrodynamic load support generated by a slip wedge of a slider bearing was studied. The surface slip property was optimized so that a maximum hydrodynamic load support could be obtained. A multi-linearity method was given for the slip control equation of two-dimensional (2-D) wall slip. We investigated 2-D wall slip and the hydrodynamics of a finite length bearing with any values of the surface limiting shear stress. It was found that the hydrodynamic effect of the slip wedge is greater than the traditional geometrical convergent-wedge. Even though the geo- metrical gap is a parallel or divergent sliding gap, the slip wedge still gives rise to a very big hydrodynamic pressure. The optimized slip wedge can give rise to a hy- drodynamic load support as high as 2.5 times of what the geometrical conver- gent-wedge can produce. Wall slip usually gives a small surface friction. | MA GuoJun WU ChengWei ZHOU Ping | 2007 | Science China(Physics,Mechanics & Astronomy)2007，50，3： | 3 |
| 5 | Validation of the simplified criteria for diagnosis of autoimmune hepatitis in Chinese patients显示文摘 | Dekai Qiu Qixia Wang Hui Wang Qing Xie Guoqing Zang Hong Jiang Chuantao Tu Jinsheng Guo Shuncai Zhang Jianshe Wang Yi Lu Ying Han Lei Shen Xiaoyu Chen Xiqi Hu Xiaojin Wang Chengwei Chen Qingchun Fu Xiong Ma | 2010 | Journal of Hepatology2010，，： | 2 |
| 6 | Multi-linearity algorithm for wall slip in two dimensional gap flow显示文摘 | MA Guojun WU Chengwei ZHOU Ping | 2007 | International Journal for Numerical Methods in Engin- eering2007，69，12： | 1 |
| 7 | Low friction and high load support capacity of slider bearing with a mixed slip surface显示文摘 | WU Chengwei MA Guojun ZHOU Ping | 2006 | Journal of Tribology2006，128，4： | 1 |
| 8 | Squeeze fluid film of spherical hydrophobic surface with wall slip显示文摘 | WU Chengwei ZHOU Ping MA Guojun | 2006 | TribologyInternational2006，39，： | 1 |
| 9 | Evaluation of Multidisciplinary Collaborative Care in Patients with Acute Coronary Syndrome and Depression and/or Anxiety Disorders显示文摘Objective:To evaluate the effect of multidisciplinary collaborative care(MCC)in patients with both acute coronary syndrome(ACS)and depression and/or anxiety disorders compared with usual physician care(UPC).Methods:Depression and/or anxiety were screened by using SDS and SAS,ACS patients with depression and/or anxiety disorders were randomized into MCC and UPC groups.The cardiac outcomes and the life quality were evaluated at1year follow-up.Results:Overall,30.19%(96/318)patients had positive screen results.At1year,Cardiac outcome measures for patients in MCC group were significantly better for composite events of cardiac death and non-fatal MI(6.12% vs23.40%,p=0.016),cardiac function(NYHA functional classifi cation III or IV,0% vs 25%,p=0.05),and angina pectoris(21.28% vs 85%,p<0.0005),than patients in UPC group;the life quality were improved in patients in MCC group.Conclusion:After ACS,30.19% of patients had depression and/or anxiety disorders,MCC had better effects on cardiac outcomes and quality of life in ACS patients with Psychiatric disorders. | Feng Liang Xiuhua Ma Liuzhuang Zhao Chengwei Xing Xin Li Dongjing Zhao Da-Yi Hu Shuoqiang Hu Wenbin Wang Lantang Han Shujun Cao Huifang Liu Zhengyu Bian | 2017 | Cardiovascular Innovations and Applications2017，，B05： | 1 |
| 10 | Nano silica aerogel-induced formation of an organic/alloy biphasic interfacial layer enables construction of stable high-energy lithium metal batteries显示文摘Lithium metal batteries represent promising candidates for high-energy-density batteries, however, many challenges must still be overcome,e.g., interface instability and dendrite growth. In this work, nano silica aerogel was employed to generate a hybrid film with high lithium ion conductivity(0.6 mS cm^(-1)at room temperature) via an in situ crosslinking reaction. TOF-SIMS profile analysis has revealed conversion mechanism of hybrid film to Li–Si alloy/Li F biphasic interface layer, suggesting that the Li–Si alloy and Li F-rich interface layer promoted rapid Li+transport and shielded the Li anodes from corrosive reactions with electrolyte-derived products. When coupled with nickel-cobalt-manganese-based cathodes, the batteries achieve outstanding capacity retention over 1000 cycles at 1 C. Additionally the developed film coated on Li enabled high coulombic efficiency(99.5%) after long-term cycling when coupled with S cathodes. Overall, the results presented herein confirm an effective strategy for the development of high-energy batteries. | Chengwei Ma Xinyu Zhang Chengcai Liu Yuanxing Zhang Yuanshen Wang Ling Liu Zhikun Zhao Borong Wu Daobin Mu | 2023 | Green Energy & Environment2023，8，4： | 1 |
| 11 | The probe in the structure andenvironmental control and adjustment of north China muti-span plastic greenhouse显示文摘 | Huang Zhidong Ma Chengwei Wang Yiming | 1998 | Transactions of the CSAE1998，14，： | 1 |
| 12 | Abnormal behavior of a hydrodynamic lubrication journal bearing caused by wall slip显示文摘 | WU Chengwei MA Guojun | 2005 | TribologyIntemational2005，38，： | 1 |
| 13 | Wall slip and hydrodynamic of two-dimensional journal bearing显示文摘 | MA Guojun WU Chengwei ZHOU Pin | 2007 | TribologyIntemational2007，40，： | 1 |
| 14 | Relaxing the coenzyme specificity of 1,3-propanediol oxidoreductase from Klebsiella pneumoniae by rational design显示文摘 | Chengwei Ma Le Zhang Zhilong Xiu | 2010 | Journal of Biotechnology2010，146，4： | 1 |
| 15 | Bio-inspired, bio-degradable adenosine 5′ -diphosphate-modified hyaluronic acid coordinated hydrophobic undecanal-modified chitosan for hemostasis and wound healing显示文摘Uncontrolled hemorrhage and wound infection are crucial causes of trauma-associated death in both the military and the clinic. Therefore, developing an efficient and rapid hemostatic method with biocompatibility, easy degradation, and wound healing is of great importance and desirability. Inspired by spontaneous blood cell plug formation in the hemostasis process, an adenosine 5′-diphosphate modified pro-coagulation hyaluronic acid (HA-ADP) coordinated with enhanced antibacterial activity of undecanal-modified chitosan (UCS) was fabricated through physical electrostatic cross-linking and freeze-drying. The as-prepared hydrogel sponges showed a porous structure suitable for blood cell adhesion. In particular, the hydrogel exhibited excellent antibacterial ability and promoted the adhesion of platelets and red blood cells, thus inducing a prominent pro-coagulation ability via platelet activation, which exhibits a shorter hemostasis time (58.94% of control) in vitro. Compared with commercially available CELOX and gelatin sponge (GS), HA-ADP/UCS accelerates hemostasis and reduces blood loss in both rat tail amputation and rat artery injury models. Furthermore, all the samples exhibited su-perior cytocompatibility and biodegradability. Due to these performances, HA-ADP/UCS promoted full-thickness skin defect healing significantly in vivo. All the properties of HA-ADP/UCS suggest that it has great potential for translation as a clinical application material for hemostatic and wound healing. | Yihao Liu Haoyi Niu Chengwei Wang Xiaoxiao Yang Wentao Li Yuxin Zhang Xiaojun Ma Yuanjing Xu Pengfei Zheng Jinwu Wang Kerong Dai | 2022 | Bioactive Materials2022，7，11： | 1 |
| 16 | Performance evaluation of grou- nd source heat pump system for greenhouse heating in northern China显示文摘 | Lilong Chai Chengwei Ma Ji-Qin Ni | 2012 | Biosystems Engineering2012，111，1： | 1 |
| 17 | Wall slip andhydrodynamics of two-dimensional journal bearing显示文摘 | MA Guojun WU Chengwei ZHOU Ping | 2007 | Tribology International2007，40，： | 1 |
| 18 | The chemical environment and structural ordering in liquid Mg-Y-Zn system:An ab-initio molecular dynamics investigation of melt for the formation mechanism of LPSO structure显示文摘In an effort to clarify the formation mechanism of LPSO structure in Mg-Y-Zn alloy,the chemical environment and structural ordering in liquid Mg-rich Mg-Y-Zn system are investigated with the aid of ab-initio molecular dynamics simulation.In liquid Mg-rich Mg-Y alloys,the strong Mg-Y interaction is determined,which promotes the formation of fivefold symmetric local structure.For Mg-Zn alloys,the weak Mg-Zn interaction results in the fivefold symmetry weakening in the liquid structure.Due to the coexistence of Y and Zn,the strong attractive interaction is introduced in liquid Mg-Y-Zn ternary alloy,and contributes to the clustering of Mg,Y,Zn launched from Zn.What is more,the distribution of local structures becomes closer to that in pure Mg compared with that in binary Mg-Y and Mg-Zn alloys.These results should relate to the origins of the Y/Zn segregation zone and close-packed stacking mode in LPSO structure,which provides a new insight into the formation mechanism of LPSO structure at atomic level. | Tangpeng Ma Jin Wang Kaiming Cheng Chengwei Zhan Jixue Zhou Jingyu Qin Guochen Zhao Xinfang Zhang | 2024 | Journal of Magnesium and Alloys2024，12，2： | 0 |
| 19 | Identification of genes under positive selection reveals evolutionary adaptation of Ulva mutabilis显示文摘Ulvophytes are attractive model systems for understanding the evolution of growth,development,and environmental stress responses.They are untapped resources for food,fuel,and high-value compounds.The rapid and abundant growth of Ulva species makes them key contributors to coastal biogeochemical cycles,which can cause significant environmental problems in the form of green tides and biofouling.Until now,the Ulva mutabilis genome is the only Ulva genome to have been sequenced.To obtain further insights into the evolutionary forces driving divergence in Ulva species,we analyzed 3905 single copy ortholog family from U.mutabilis,Chlamydomonas reinhardtii and Volvox carteri to identify genes under positive selection(GUPS)in U.mutabilis.We detected 63 orthologs in U.mutabilis that were considered to be under positive selection.Functional analyses revealed that several adaptive modifications in photosynthesis,amino acid and protein synthesis,signal transduction and stress-related processes might explain why this alga has evolved the ability to grow very rapidly and cope with the variable coastal ecosystem environments. | Jian Zhang Xiaowen Zhang Wentao Han Xiao Fan Yitao Wang Dong Xu Yan Zhang Jian Ma Chengwei Liang Naihao Ye | 2020 | Acta Oceanologica Sinica2020，39，10： | 0 |
| 20 | Advances in Deep Learning-Based Medical Image Analysis显示文摘Importance.With the booming growth of artificial intelligence(AI),especially the recent advancements of deep learning,utilizing advanced deep learning-based methods for medical image analysis has become an active research area both in medical industry and academia.This paper reviewed the recent progress of deep learning research in medical image analysis and clinical applications.It also discussed the existing problems in the field and provided possible solutions and future directions.Highlights.This paper reviewed the advancement of convolutional neural network-based techniques in clinical applications.More specifically,state-ofthe-art clinical applications include four major human body systems:the nervous system,the cardiovascular system,the digestive system,and the skeletal system.Overall,according to the best available evidence,deep learning models performed well in medical image analysis,but what cannot be ignored are the algorithms derived from small-scale medical datasets impeding the clinical applicability.Future direction could include federated learning,benchmark dataset collection,and utilizing domain subject knowledge as priors.Conclusion.Recent advanced deep learning technologies have achieved great success in medical image analysis with high accuracy,efficiency,stability,and scalability.Technological advancements that can alleviate the high demands on high-quality large-scale datasets could be one of the future developments in this area. | Xiaoqing Liu Kunlun Gao Bo Liu Chengwei Pan Kongming Liang Lifeng Yan Jiechao Ma Fujin He Shu Zhang Siyuan Pan Yizhou Yu | 2021 | Health Data Science2021，，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员