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| 1 | Damage evolution and dynamic response of cement asphalt mortar layer of slab track under vehicle dynamic load显示文摘The damage evolution and dynamic performance of a cement asphalt(CA)mortar layer of slab track subjected to vehicle dynamic load is investigated in this paper.Initially,a statistical damage constitutive model for the CA mortar layer is developed using continuous damage mechanics and probability theory.In this model,the strength of the CA mortar elements is treated as a random variable,which follows the Weibull distribution.The inclusion of strain rate dependence affords considering its influence on the damage development and the transition between viscosity and elasticity.Comparisons with experimental data support the reliability of the model.A three-dimensional finite element(FE)model of a slab track is then created with the commercial software ABAQUS,where the devised model for the CA mortar is implemented as a user-defined material subroutine.Finally,a vertical vehicle model is coupled with the FE model of the slab track,through the wheel-rail contact forces,based on the nonlinear Hertzian contact theory.The evolution of the damage and of the dynamic performance of the CA mortar layer with various initial damage is investigated under the train and track interaction.The analysis indicates that the proposed model is capable of predicting the damage evolution of the CA mortar layer exposed to vehicle dynamic load.The dynamic compressive strain,the strain rate,and the induced damage increase significantly with an increase in the initial damage,whereas the dynamic compressive stress exhibits a sharp decrease with the increasing initial damage.Also,it is found that the strain rate dependence significantly influences the damage evolution and the dynamic behavior of the CA mortar layer. | ZHU ShengYang FU Qiang CAI ChengBiao SPANOS Pol D | 2014 | Science China(Technological Sciences)2014，57，10： | 19 |
| 2 | 通过监测乙型肝炎患者耐药突变株比例的变化推测cccDNA的快速更新周期显示文摘【据Hepatology 2021年1月报道】题:通过监测乙型肝炎患者耐药突变株比例的变化推测ccc DNA的快速更新周期(作者Huang Q等)来自南方医科大学南方医院的孙剑教授课题组利用两项已结束的随机对照临床研究样本,以拉米夫定耐药(LAMR)突变位点—rt M204I/V作为标记,以rt M204I/V耐药株相对于野毒株的比例变化,推测ccc DNA池的更新周期。 | 陆星宇 周彬孙 HUANG Q ZHOU B CAI D | 2021 | 临床肝胆病杂志2021，37，4： | 16 |
| 3 | 利用洋底地震资料估算进入马里亚纳俯冲带的水通量显示文摘俯冲带水迁移是地表水进入地球深部的主要方式。但是,通过板块俯冲到底能够带入深部地幔多少水受到多种因素影响,包括俯冲带板片年龄、俯冲带几何性质、俯冲带热结构、板块汇聚速率等。目前关于俯;中带的水循环仍知之甚少。最近,华盛顿大学地球与行星科学系的Cai C博士等人收集和分析了马里亚纳海沟中心周围宽频洋底瑞利面波地震数据,估算了通过板块俯冲输入地球深部的水通量。他们的研究结果表明:板块俯冲带入深部地幔的水通量是以前估算的4.3倍,而且远大于目前对地幔输出水通量的估计。由于大量的长期净水流入地球深处与地质记录中的海平面稳定性不一致;同时也没有迹象表明马里亚纳俯冲带的板块弯曲区在形态和断裂强度与其它古俯冲带的对应区域对比有很大的不同。 | Cai C Wiens D A Shen W Eimer M 张宝华 | 2018 | 矿物岩石地球化学通报2018，37，6： | 13 |
| 4 | Clinical significance of main pancreatic duct dilation on computed tomography: Single and double duct dilation显示文摘AIM: To study the patients with main pancreatic duct dilation on computed tomography (CT) and thereby to provide the predictive criteria to identify patients at high risk of significant diseases, such as pancreatic cancer, and to avoid unnecessary work up for patients at low risk of such diseases. METHODS: Patients with dilation of the main pancreatic duct on CT at Emory University Hospital in 2002 were identified by computer search. Clinical course and ultimate diagnosis were obtained in all the identified patients by abstraction of their computer database records. RESULTS: Seventy-seven patients were identified in this study. Chronic pancreatitis and pancreatic cancer were the most common causes of the main pancreatic duct dilation on CT. Although the majority of patients with isolated dilation of the main pancreatic duct (single duct dilation) had chronic pancreatitis, one-third of patients with single duct dilation but without chronic pancreatitis had pancreatic malignancies, whereas most of patients with concomitant biliary duct dilation (double duct dilation) had pancreatic cancer. CONCLUSION: Patients with pancreatic double duct dilation need extensive work up and careful followup since a majority of these patients are ultimately diagnosed with pancreatic cancer. Patients with single duct dilation, especially such patients without any evidence of chronic pancreatitis, also need careful follow-up since the possibility of pancreatic malignancy, including adenocarcinoma and intraductal papillary mucinous tumors, is still high. | Mark D Edge Maarouf Hoteit Amil P Patel Xiaoping Wang Deborah A Baumgarten Qiang Cai | 2007 | World Journal of Gastroenterology2007，13，11： | 9 |
| 5 | Elucidation of the ‘Honeycrisp’ pedigree through haplotype analysis with a multi-family integrated SNP linkage map and a large apple (Malus×domestica) pedigree-connected SNP data set显示文摘The apple(Malus×domestica)cultivar Honeycrisp has become important economically and as a breeding parent.An earlier study with SSR markers indicated the original recorded pedigree of‘Honeycrisp’was incorrect and‘Keepsake’was identified as one putative parent,the other being unknown.The objective of this study was to verify‘Keepsake’as a parent and identify and genetically describe the unknown parent and its grandparents.A multi-family based dense and high-quality integrated SNP map was created using the apple 8 K Illumina Infinium SNP array.This map was used alongside a large pedigree-connected data set from the RosBREED project to build extended SNP haplotypes and to identify pedigree relationships.‘Keepsake’was verified as one parent of‘Honeycrisp’and‘Duchess of Oldenburg’and‘Golden Delicious’were identified as grandparents through the unknown parent.Following this finding,siblings of‘Honeycrisp’were identified using the SNP data.Breeding records from several of these siblings suggested that the previously unreported parent is a University of Minnesota selection,MN1627.This selection is no longer available,but now is genetically described through imputed SNP haplotypes.We also present the mosaic grandparental composition of‘Honeycrisp’for each of its 17 chromosome pairs.This new pedigree and genetic information will be useful in future pedigree-based genetic studies to connect‘Honeycrisp’with other cultivars used widely in apple breeding programs.The created SNP linkage map will benefit future research using the data from the Illumina apple 8 and 20 K and Affymetrix 480 K SNP arrays. | Nicholas P Howard Eric van de Weg David S Bedford Cameron P Peace Stijn Vanderzande Matthew D Clark Soon Li Teh Lichun Cai James J Luby | 2017 | Horticulture Research2017，4，1： | 9 |
| 6 | Friction Characteristics of Mechanical Seals with Laser-textured Seal Faces显示文摘Heat generated by friction between faces of mechanica l seals is a major factor that causes deterioration of the seals and shortens th eir service life. Excessive temperature rise can greatly alter the seal geometry and vaporize the sealing fluid, resulting in friction of boundary lubrication. These effects on face seals usually lead to excessive leakage and ultimately ren der the seal inoperable. In order to maintain the reliability of seals, high fri ction and unwanted wear must be avoided. Using the laser-texturing process to produce regular micro-surface structures is a fast and convenient technique compared to some more conventional etching or erosion technique currently used by the seal industry for various grooved face seals. Indeed, by using a pulse laser, better control is obtained on the geometr y, size and pore ratio of seal rings made of metallic or ceramic materials. In t his study, seal rings are made of silicon carbide and carbon. Mating faces of th e rings are polished and only silicon carbide rings are laser-textured. The las er texturing can be controlled to produce spherical pores at selected diameters, depths and pore ratio. The textured rings are then super-polished to remove th e bulges formed on the pores rims. After this process the average pore diameter, pore depth and pore ratio reach the predetermined parameter. Some untextured ri ngs are also treated to the same surface roughness and served as a reference for comparison of the textured rings. A special test rig is used to simulate a mech anical seal system and to measure the effect of the laser texturing on friction and seal performance. Tests are performed at various rotational speeds and vario us axial loads. Compared with the conventional mechanical seals, temperature rise, friction torq ue and friction coefficient of mechanical seals with laser-textured seal faces are much lower. These preliminary results show the potential of improving fricti on performance and increasing seal life with laser-textured seal faces. | YU Xin-qi 1,2, HE Song 1, CAI Ren-ling 1 (1. Research Institute of Pressure Vessel and Process Equi pment, East China University of Science and Technology, Shanghai 200237, China 2. College of Mechanical Science and Engineering, Hebei University of Science an d Technology, Shijiazhuang 050018, China) | 2002 | 厦门大学学报(自然科学版)2002，41，S1： | 9 |
| 7 | Spatial and temporal variation of historical anthropogenic NMVOCs emission inventories in China显示文摘 | Bo Y. Cai H. Xie S. D | 2008 | 2008 (149)2008，，149： | 2 |
| 8 | Constant Returns Endogenous Growth with Pollution Control 显示文摘 | Huang H Cai D | 1994 | Environmental and Resource Economics1994，4，4： | 1 |
| 9 | Tourist purchase decision involvement and information preferences显示文摘 | Cai L P Feng R M Breiter D | 2004 | Journal of Vacation Marketing2004，10，2： | 1 |
| 10 | Vehicle/Guideway interaction for high speed vehicles on a flexible guideway显示文摘 | Cai Y Chen S S Rote D M | 1994 | J Sound and Vibration1994，175，： | 1 |
| 11 | Multi machine power system excitation control design via theories of feedback linearization control and nonlinear robust control显示文摘 | Gan D Q Qu Z H Cai H Z | 2000 | International Journal of Systems Science2000，31，4： | 1 |
| 12 | Combustion reactivity and morphological change in coal chars:Effect of pyrolysis temperature,heating rate and pressure显示文摘 | CAI H-Y GELL A J CHATZAKIS I N LIM J-Y DUGWELL D R KANDIYDT I R | 1996 | Fuel1996，75，1： | 1 |
| 13 | Determination of Hemoglobin Based on Its Enzymatic Activity of the Oxidation of o-Phenylenediamine with Hydrogen Peroxide as an Oxidant 显示文摘 | Zhang K Cai R X Chen D H | 2000 | Analy Chim Acta2000，413，： | 1 |
| 14 | Positional cloning of a gene for nematode resistance in sugar beet显示文摘 | Cai D Kleine M Kifle S | 1997 | Science1997，275，： | 1 |
| 15 | Predicting Protein Quaternary Structure by Pseudo Amino Acid Composition显示文摘 | Chou K C Cai Y D | 2003 | Proteins2003，53，： | 1 |
| 16 | Analysis of asymmetric TEM cell and its optimum design of electric field distribution 显示文摘 | Cai X D Li J Y | 1989 | IEE Proceedings1989，136，3： | 1 |
| 17 | Endothelial dysfunction in cardiovascular diseaaes: the role of oxidant stress显示文摘 | Cai H Harrison D G | 2000 | Circ Res2000，87，10： | 1 |
| 18 | Immediate hematological toxicity of linezolid in healthy volunteers with different body weight: a phase I clinical trial显示文摘 | Cai Y Chai D Falagas ME ctal | 2012 | J Antibiot (Tokyo)2012，65，4： | 1 |
| 19 | A fem that hyperaccumulates arsenic显示文摘 | Ma L Q Komar K M Tu C Zhang W H Cai Y Kennelley E D | 2001 | Nature2001，409，： | 1 |
| 20 | Comparison of MRS and DWI in the diagnosis of prostate cancer based on sextant analysis显示文摘 | Li B Cai W Lv D | 2013 | J Magn Reson Imaging2013，37，： | 1 |
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