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Study of ion temperature gradient driven instability from reduced Braginskii equations

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核聚变与等离子体物理 2006年第4期26卷 268-271页

作者： JIANG hai-bin wang Ai-ke Southwestern Institute of Physics Chengdu 610041

A new dispersion relation for the ion temperature gradient(ITG) driven instability in toroidal plasma is derived from the reduced Braginskii *** includes the effects of both the safety factor q and the adiabatic electron temperature gradient η e =d(lnTe)/d(lnn).The present model reproduces the basic properties of ITG instability obtained by previous *** the other hand,it is found numerically that the safety factor q enhances the ITG instabilities while the quantity η e reduces them.

关键词： ITG instability Safety factor Branginskii equations

Electronic transport and magnetic performance of Ni-Nb-Zr metallic glasses

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Rare Metals 2017年第11期36卷 894-898页

作者： hai-bin wang Qing wang Chong-Lin Chen Chuang Dong School of Materials Science and Engineering Jiangsu University of Science and Technology Zhenjiang 212003 China School of Materials Science and Engineering Dalian University of Technology Dalian 116024 China Department of Physics and Astronomy University of Texas at San Antonio San Antonio TX 78249 USA

The electronic transport and magnetic perfor- mances of Ni-Nb-Zr metallic glasses under low temperature were investigated. X-ray diffraction （XRD） analysis indicates that the Ni-Nb-Zr ribbons prepared by induction melting and melt spinning method have single amorphous phase. The electrical transport property results of these metallic glass alloys indicate that the Ni-Nb-Zr metallic glasses have negative resistivity temperature coefficients （RTC） and low- temperature drift. The negative RTC and corresponding pos- sible values of Fermi energy of Ni-Nb-Zr metallic glasses are interpreted by the extended Ziman-Faber diffraction theory. The magnetic measurements indicate that the magnetic in- tensities of the Ni-Nb-Zr metallic glasses are related to Ni content and atomic sizes while the low temperature has few influences on the magnetic properties.

关键词： Metallic glass Electrical resistance Magneticproperties

Impact of enhanced recovery after surgery programs on pancreatic surgery:A meta-analysis

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World Journal of Gastroenterology 2018年第15期24卷 1666-1678页

作者： hai-bin Ji Wen-Tao Zhu Qiang Wei Xiao-Xiao wang hai-bin wang Qiang-Pu Chen Department of Hepatobiliary Surgery Affiliated Hospital of Binzhou Medical UniversityBinzhou 256603Shandong ProvinceChina Department of Hepatobiliary Surgery Clinical Nutrition Support CenterAffiliated Hospital of Binzhou Medical University Clinical Nutrition and Metabolism Key Laboratory of Shandong Province Binzhou 256603Shandong ProvinceChina

AIM To evaluate the impact of enhanced recovery after surgery(ERAS) programs on postoperative complications of pancreatic surgery. METHODS Computer searches were performed in databases(including PubM ed, Cochrane Library and Embase) for randomized controlled trials or case-control studies describing ERAS programs in patients undergoing pancreatic surgery published between January 1995 and August 2017. Two researchers independently evaluated the quality of the studies' extracted data that met the inclusion criteria and performed a metaanalysis using Rev Man5.3.5 software. Forest plots, demonstrating the outcomes of the ERAS group vs the control group after pancreatic surgery, and funnel plots were used to evaluate potential publication *** Twenty case-control studies including 3694 patients, published between January 1995 and August 2017, were selected for the meta-analysis. This study included the ERAS group(n = 1886) and the control group(n = 1808), which adopted the traditional perioperative management. Compared to the control group, the ERAS group had lower delayed gastric emptying rates [odds ratio(OR) = 0.58, 95% confidence interval (CI): 0.48-0.72, P < 0.00001], lower postoperative complication rates(OR = 0.57, 95%CI: 0.45-0.72, P < 0.00001), particularly for the mild postoperative complications(Clavien-Dindo Ⅰ-Ⅱ)(OR = 0.71, 95%CI: 0.58-0.88, P = 0.002), lower abdominal infection rates(OR = 0.70, 95%CI: 0.54-0.90, P = 0.006), and shorter postoperative length of hospital stay(PLOS)(WMD =-4.45, 95%CI:-5.99 to-2.91, P < 0.00001). However, there were no significant differences in complications, such as, postoperative pancreatic fistulas, moderate to severe complications(Clavien-Dindo Ⅲ-Ⅴ), mortality, readmission and unintended reoperation, in both *** The perioperative implementation of ERAS programs in pancreatic surgery is safe and effective, can decrease postoperative complication rates, and can promote recovery for patients.

关键词： Pancreatic surgery Enhanced recovery after surgery Postoperative complication Meta-analysis

Syntheses and Structures of binaphthyl-bridged Schiff Bases

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Chemical Research in Chinese Universities 2008年第5期24卷 561-564页

作者： wang bin LI Min-xiong XU Shan-sheng SONG hai-bin wang Bai-quan State Key Laboratory of Elemento-Organie Chemistry College of Chemistry Nankai University Tianjin 300071 P. R. China

The reaction of dinaphthofuran with lithium in anhydrous diethyl ether led to a solution of the corresponding C,O-dilithiated intermediate which, upon treatment with DMF at ？78 oC, afforded, after hydrolysis, 2＇-hydroxy-1,1＇-binaphthyl-2-carbaldehyde in a good yield. Then binaphthyl-bridged Schiff bases were prepared by the condensation of 2＇-hydroxy-1,1＇-binaphthyl-2-carbaldehyde with the corresponding aromatic amines.

关键词： Schiff base binaphthyl compound Reductive ring opening

Microstructure and performance of WC-Co-Cr coating with ultrafine/nanocrystalline structures

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Rare Metals 2018年第11期37卷 968-975页

作者： Xue-Zheng wang hai-bin wang Xue-Mei Liu Chao Hou Xiao-Yan Song College of Materials Science and Engineering Key Laboratory of Advanced Functional Materials Education Ministry of ChinaBeijing University of Technology

The WC-lOCo-4Cr composite powder was synthesized firstly. Then the composite powder was agglomerated to prepare thermal spraying feedstock. The ultrafine/nanostructured WC-lOCo-4Cr coating was prepared by high velocity oxygen fuel thermal spraying. The phase constitution, elemental distribution and microstructure of the coating were characterized by X-ray diffraction and transmission electron microscopy, respectively. The wear resistance and corrosion resistance of the prepared composite coating were tested. The results show that the main phases of the coating include WC, binding phase with partial amorphous structure, with a little WC and Co(Cr)coexisting. The distributions of Co and Cr elements from the phase boundary to the eutectic area then to Co zone were analyzed quantitatively. The mechanisms for the formation of the microstructure and effects of Cr on the performance of the composite coating are proposed.

关键词： In situ synthesis High velocity oxygen fuel Ultrafine/nanostructure Composite coating Phase constitution

Mechanical properties of WC–Co coatings with different decarburization levels

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Rare Metals 2014年第3期33卷 313-317页

作者： Xu Wu Zhi-Meng Guo hai-bin wang Xiao-Yan Song School of Materials Science and Engineering University of Science and Technology Bejing College of Materials Science and Engineering Beijing University of Technology

In this study, two kinds of WC-Co coatings with different decarburization levels were deposited by high-velocity oxy-fuel（HVOF） spraying using the ultrafine WC-Co composite powder and commercial micronsized powder, respectively. The hardness and elastic modulus were measured on the top surface and cross sections of the prepared coatings by the nanoindentation method. The results show that the ultrafine-structured coating has much higher density and inhibited decarburization than the conventional coating, which thus results in higher hardness and elastic modulus values than the micronsized coating. The wear resistance of thermal-sprayed cermet coatings greatly depends on the cross-sectional hardness and elastic modulus which reflects the bond strength between splats to some extent. Based on the analysis, a better understanding of the microstructure and properties in cermet coating materials was obtained.

关键词： Composite powder Cermet coating Decarburization Nanoindentation Wear resistance

Assessment of Comparative Genomic Hybridization Experiment by an in situ Synthesized CombiMatrix Microarray with Yersinia pestis Vaccine Strain EV76 DNA

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Biomedical and Environmental Sciences 2010年第5期23卷 384-390页

作者： YUAN-hai YOU PENG wang YAN-HUA wang hai-bin wang DONG-ZHENG YU RONG hai JIAN-ZHONG ZHANG National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijing 102206China

Objective The quality of microarray data influences the accuracy of comparative genomic analyses to a large *** ensure that the results obtained by using an in situ synthesized microarray are accurate,data quality is to be assessed by evaluating the melting temperature (Tm) of probes,probability of false synthesis rates,and fragmentation of labeled *** DNA from the Yersinia pestis vaccine strain EV76 was used for microarray *** results were confirmed by *** and bioinformatics methods were employed to perform microarray data analyses and *** Correlation coefficients of the three datasets were above 0.95 after two-time stripping and hybridization with a labeled DNA with the size of fragmentation being 200 bp-2 kb,which showed that the hybridization results were highly *** coefficients were lower with the values ranging from 0.87 to 0.92 between the datasets generated from hybridization with different sizes of the labeled DNA *** the relationship between Tm and signal intensity,there was a different distribution of Tm in the lowest 300 or 3 000 probes with a range of 70 ℃-72 ℃ and the highest 300 or 3 000 probes with a range of 72 ℃-74 ℃.Conclusion The results of this study suggest that the initial microarray design may affect the accuracy of final analyses and that the probe Tm and the size of the labeled fragment may be the two factors of the greatest importance.

关键词： Array CGH Data quality Assessment

Synthesis,Structure,and Ring-opening Metathesis Polymerization of η~5-Pentamethylcyclopentadienyl-(η~5-exo-tricyclo [5.2.1.0^(2,6)]deca-2,5,8-trien-6-yl) Iron

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Chemical Research in Chinese Universities 2009年第5期25卷 662-665页

作者： ZHAO Xi LI bin XU Shan-sheng SONG hai-bin wang Bai-quan State Key Laboratory of Elemento-Organie Chemistry. College of Chemistry Nankai University Tianjin 300071 P. R. China

η^5-Pentamethylcyclopentadienyl-（η^5-exo-tricyclo[5.***.1.0^2,6]deca-2,5,8-trien-6-yl） iron（3） was synthesized and characterized by ^1H NMR, ^13C NMR, MS, elemental analysis, IR, UV and X-ray diffraction analysis. Compound 3 was polymerized with ring-opening metathesis polymerization（ROMP） initiator （PCy3）2Cl2Ru=CHPh. ^1H NMR and IR spectra revealed the presence of CH=CH units in the polymer and supported the ROMP mechanism. GPC analysis of the polymer showed that the weight-average molecular weights（Mw） was 5967, and the polydispersity index（PDl） was 1.16. The polymer was also investigated by UV and cyclic voltammetry.

关键词： Ferrocene Metathesis Ring-opening polymerization Cyclic voltammetry X-ray diffraction

Microstructure and storage properties of low V-containing Ti–Cr–V hydrogen storage alloys prepared by arc melting and suction casting

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Rare Metals 2013年第4期32卷 354-358页

作者： hai-bin wang Qing wang Chuang Dong Fen Xu Li-Xian Sun Chong-Lin Chen Key Laboratory of Materials Modification Ministry of Education Dalian University of Technology Materials and Thermochemistry Laboratory Dalian Institute of Chemical Physics Chinese Academy of Sciences Department of Physics and Astronomy University of Texas at San Antonio

The microstructure and hydrogen storage properties of low V content （Ti0.46Cr0.54）100-xVx （x = 2.5-7.1, at%） and （TiyCr1-y）95V5 （y= 0.38-0.54） alloys were investigated. These alloys were prepared by arc melting and copper mould suction casting. The structures of as-cast （Ti0.46Cr0.54）100-xVx （x = 2.5, 5.0, and 7.1） alloy ingots evolve with V contents from pure Laves-（x = 2.5） to dual-phase TiCr2-BCC structures （5.0 and 7.1）, whereas the suction-cast （Ti0.46Cr0.54）100-xVx （x =2.5, 5.0, and 7.1） alloys only contain single BCC phase. The suction-cast alloy rod （Ti0.46Cr0.54）95V5, containing only 5.0 at% V is shown to possess the optimum hydrogen absorption capacity, with the maximum hydrogen content of 3.14 wt%. Furthermore, the hydrogen storage properties of the suction-cast low V alloys （TiyCr1-y）95V5 （y = 0.38-0.54） are sensitive to Ti/Cr ratios and only those alloys with Ti/Cr ratios close to the CN14 cluster [TiTCrs] have good hydrogen storage properties.

关键词： Ti-Cr-V alloys Cluster Hydrogen storageproperties Copper mould suction casting