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| 1 | Molecular dynamics simulations of atomic-scale friction in diamond-silver sliding system显示文摘Molecular dynamics simulations have been performed to explore the atomic-scale sliding friction, especially the stick-slip friction, in a system consisting of a diamond slider and a silver substrate. The mechanisms of the stick-slip behavior are investigated by considering sliding speeds between 10 m/s and 200 m/s.The analyses of the shear distance between the upmost layer and the downmost layer and displacements of a column of atoms in the slider show that shearing deformation of the slider is the main cause of the stick-slip phenomenon. Our simulations also present that a commensurate fit between the two contact surfaces is unimportant for the stick-slip friction. | ZHU PengZhe HU YuanZhong WANG Hui | 2009 | Chinese Science Bulletin2009，54，24： | 5 |
| 2 | Study of nanoscratching of polymers by using molecular dynamics simulations显示文摘Molecular dynamic simulations are performed to study the nanoscratching behavior of polymers.The effects of scratching depth,scratching velocity and indenter/polymer interaction strength are investigated.It is found that polymer material in the scratching zone around the indenter can be removed in a ductile manner as the local temperature in the scratching zone exceeds glass transition temperature Tg.The recovery of polymer can be more significant when the temperature approaches or exceeds Tg.The tangential force,normal force and friction coefficient increase as the scratching depth increases.A larger scratching velocity leads to more material deformation and higher pile-up.The tangential force and normal force are larger for a larger scratching velocity whereas the friction coefficient is almost independent of the scratching velocities studied.It is also found that stronger indenter/polymer interaction strength results in a larger tangential force and friction coefficient. | YUAN DanDan ZHU PengZhe FANG FengZhou QIU Chen | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，9： | 4 |
| 3 | A risk-prediction score for colorectal lesions on 12,628 participants at high risk of colorectal cancer显示文摘Background The uptake of colonoscopy is low in individuals at risk of colorectal cancer(CRC).We constructed a riskprediction score(RPS)in a large community-based sample at high risk of CRC to enable more accurate risk stratification and to motivate and increase the uptake rate of colonoscopy.Methods A total of 12,628 participants classified as high-risk according to positivity of immunochemical fecal occult blood tests or High-Risk Factor Questionnaire underwent colonoscopy.Logistic regression was used to derive a RPS and analysed the associations of the RPS with colorectal lesions,giving odds ratios(ORs)and 95%confidence intervals(CIs).Results Of the participants,men(OR=1.73,95%CI=1.58–1.90),older age(≥65 years;1.41,1.31–1.53),higher body mass index(≥28 kg/m^(2);1.22,1.07–1.39),ever smoking(1.47,1.31–1.65),and weekly alcohol use(1.28,1.09–1.52)were associated with a higher risk of colorectal lesions.We assigned 1 point to each of the above five risk factors and derived a RPS ranging from 0 to 5,with a higher score indicating a higher risk.Compared with a RPS of 0,a RPS of 1,2,3,and 4–5 showed a higher risk of colorectal lesions,with the OR(95%CI)being 1.50(1.37–1.63),2.34(2.12–2.59),3.58(3.13–4.10),and 3.91(3.00–5.10),respectively.The area under the receiver-operating characteristic curve of RPS in predicting colorectal lesions was 0.62.Conclusions Participants with an increase in the RPS of≥1 point had a significantly higher risk of colorectal lesions,suggesting the urgency for measuring colonoscopy in this very high-risk group.High-risk strategies incorporating RPS may be employed to achieve a higher colonoscopy-uptake rate. | Lixin Liang Yingru Liang Ke Li Pengzhe Qin Guozhen Lin Yan Li Huan Xu Suixiang Wang Qinlong Jing Boheng Liang Lin Xu | 2022 | Gastroenterology Report2022，10，1： | 2 |
| 4 | Atomistic simulations of the effect of a void on nanoindentation response of nickel显示文摘Three-dimensional molecular dynamics simulations have been performed to investigate the effect of a void on the nanoindentation of nickel thin film.The radius and depth of the void are varied to explore how they influence the nanoindentation.The simulation results reveal that the presence of a void softens the material and allows for a larger indentation depth at a given load compared to the no void case.The radius and depth of the void have a major effect on the indentation behaviors of the thin film.It is also observed that the void will collapse during the nanoindentation of crystal with void.And when the indentation depth is sufficiently large,the void will disappear.It is found that the indentation depth needed to make the void disappear depends on the void size and location. | ZHU PengZhe,HU YuanZhong & WANG Hui State Key Laboratory of Tribology,Tsinghua University,Beijing 100084,China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，9： | 2 |
| 5 | Arabidopsis SKP1, a homologue of a cell cycle regulator gene, is predominantly expressed in meristematic cells显示文摘 | Ron Porat Pengzhe Lu Sharman D. O’Neill | 1998 | Planta1998，，3： | 1 |
| 6 | Feasibility of employing ultrasound for on-line membrane fouling con- trol in an anaerobic membrane bioreactor 显示文摘 | SUI Pengzhe WEN Xianghua HUANG Xia | 2008 | Desalina- tion2008，219，123： | 1 |
| 7 | Multiscale simulations of nanoindentation and nanoscratch of single crystal copper显示文摘 | Pengzhe Zhu Yuanzhong Hu Fengzhou Fang Hui Wang | 2012 | Applied Surface Science2012，，10： | 1 |
| 8 | Behavior ofinorganic elements during sludge ozonation and their effects onsludge solubilization显示文摘 | SUI Pengzhe FUMITAKE N HIDEAKI N | 2011 | Water Res2011，45，5： | 1 |
| 9 | Effects of pore size on the lubrication properties of porous polyimide retainer material显示文摘An oil-impregnated porous polyimide(PI)retainer is used in space rolling bearings to improve the lubrication performance,which depends on the release of lubricant from the pores,and therefore is closely related to the pore size.To study the effect of pore size,in this work,PI materials with different pore sizes were prepared by preheating the retainer tube billet during the limit pressing process,and then the friction tests were conducted with the ball-on-ring mode.The results show that the applied load deforms the pores,allowing the lubricant to be squeezed out from the pore;the centrifugal effect induced by rotation also makes the lubricant migrate out of the pore.Therefore,for the same pore sizes,the friction coefficients decrease with the increasing loads and rotation speeds.In addition,it was found that there exists an optimal pore size for the best lubrication properties of porous PI material.Furthermore,the optimal pore size should be larger for lubricants with high viscosity.The microscopic mechanism for lubricant outflow from pores is clarified by molecular dynamic simulations.The insights gained in this study can guide the preparation of oil-impregnated porous retainers under different working conditions. | Wenbin CHEN Wenzhong WANG Pengzhe ZHU Xiangyu GE | 2023 | Friction2023，11，8： | 1 |
| 10 | Feasibility of employing ultrasound for on-line membrane fouling control in an anaerobic membrane bioreactor显示文摘 | Sui Pengzhe Wen Xianghua Huang Xia | 2008 | Desalination2008，219，123： | 1 |
| 11 | RUNX3inhibitstheexpressionofvascularendothelialgrowthfactorandreducestheangiogenesis,growth,and metastasisofhumangastriccancer显示文摘 | PengZH WeiDY WangLW etal | 2006 | ClinCancerRes2006，12，21： | 1 |
| 12 | Study of AFM-based nanometric cutting process using molecular dynamics 显示文摘 | Zhu Pengzhe Hu Yuanzhong Ma Tianbao | 2010 | Applied Surface Science2010，256，23： | 1 |
| 13 | Membrane fouling control by ultrasound in an anaerobic membrane bioreactor显示文摘fouling online in an anaerobic membrane bioreac-tor(AMBR).Short-term running experiments were carried out under different operating conditions to explore feasible ultrasonic parameters.The experimental results indicated that when the crossflow velocity was more than 1.0 m/s,mem-brane fouling could be controlled effectively only by hydro-dynamic methods without ultrasound.When ultrasound was applied,an ultrasonic power range of 60-150 W was suitable for the membrane fouling control in the experimental system.The experimental results showed that the membrane fouling was controlled so well that membrane filtration resistance(ΣR)could stay at 5×10^(11)m^(−1) for more than a week with the crossflow velocity of 0.75 m/s,which equaled the effect of crossflow velocity of more than 1.0 m/s without ultrasound. | SUI Pengzhe WEN Xianghua HUANG Xia | 2007 | Frontiers of Environmental Science & Engineering2007，1，3： | 1 |
| 14 | Simultaneous detection of enterovirus-D68 and vaccine-related poliovirus 3 in the stool samples of a 5-month hospitalized child with acute respiratory disease:A case report显示文摘Human enterovirus(EV)infections can lead to various manifestations,with variable correlations between genotypes and symptoms.Human enterovirus D68(EV-D68)was considered to be associated with acute respiratory disease and acute flaccid myelitis.In this short report,both EV-D68 and poliovirus 3 were detected in the stool of a hospitalized 5-month child who presented with acute respiratory symptoms and who was recently vaccinated with oral polio vaccine(OPV),using a metatranscriptomic high-throughput sequencing method.The nearly full-length genome sequences with complete open reading frames of EV-D68 and poliovirus 3 were assembled.One previously-reported neurovirulence-related amino acid substitution(T860N)in the EV-D68 VP1 region was observed,but the patient showed no neurological symptoms.More attention should be paid to EV-D68,and continuous multiple syndrome-based surveillance on non-polio enterovirus is called for. | Wenzhe Su Qing Zeng Jinmei Geng Jingwen Liu Huaping Xie Kuibiao Li Pengzhe Qin Chaojun Xie Biao Di | 2023 | Biosafety and Health2023，5，4： | 0 |
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