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| 1 | Equilibrium of liquid-liquid extraction of 2-phenylbutyric acid enantiomers: Experiment and model显示文摘The utilization of liquid–liquid extraction for the separation of 2-phenylbutyric acid(2-PBA) enantiomers was proposed. Factors affecting the extract process were investigated, including organic solvents, β-cyclodextrin derivatives, cyclodextrin concentration, p H and temperature. A model was proposed to describe the separation process based on the homogeneous phase reaction mechanism. Important parameters of this model were determined experimentally. The physical distribution coefficients for molecular and ionic 2-PBA were0.129 and 7.455, respectively. The equilibrium constants of the complexation reactions were 89.36 and36.78 L·mol^(-1) for(+)-and(-)-2-PBA, respectively. The model was verified by experiments and proved to be an excellent means to optimize the separation system. Through modeling prediction and experiment, the best conditions(e.g., pH value of 3.00, extractant concentration of 0.1 mol·L^(-1), temperature of 5.0 °C) were acquired. Under this condition, the maximum enantioselectivity(2.096) was obtained. | Weifeng Xu Guilin Dai Kewen Tang Panliang Zhang Biquan Xiong Yu Liu | 2018 | Chinese Journal of Chemical Engineering2018，26，4： | 2 |
| 2 | A novel preparation method of Sn-modified Pt nanoparticles and application for methanol oxidation显示文摘 | Yongling Du Biquan Su Nuo Zhang Chunming Wang | 2008 | Applied Surface Science2008，，5： | 1 |
| 3 | Optimized Tension for AZ31B Thin Sheets Rolled with On-Line Heating Rolling显示文摘On-line heating rolling mill which could efficiently preheat sheet and apply tensile force on both ends of the sheet along rolling direction(RD)was used to investigate the effect of tension on mechanical behavior and shape quality of magnesium sheets.For revealing the infl uence mechanism,many analysis techniques including optical microscope,electron backscattered diffraction,macrotexture and transmission electron microscope were performed.The shape defect,edge wave,could be eliminated under higher tension along RD,which was attributed to more uniform distribution of microstructure and microstrain.Nevertheless,it is undesirable that the forward tensile force exceeds 3 kN in present work because the strength decreased for high recrystallization level when the tensile force is beyond this value.Furthermore,the main deformation mode was still slip during rolling process despite of accompanying twining,e.g.,double twins,but more prismatic slip activated when tensile force exceeds 3 kN.The distribution of shear bands was affected by the applied tensile force that they appear as'V'shape along RD at a low forward or backward tensile force,while they appear as reticulate shape under applied tensile force of 5 kN. | Biquan Xiao Jiangfeng Song Hua Zhao Aitao Tang Qiang Liu Bin Jiang Shitao Dou Fusheng Pan | 2021 | Acta Metallurgica Sinica(English Letters)2021，34，2： | 1 |
| 4 | Synthesis and characterization of coordination compounds of Cd(Ⅱ), Co(Ⅱ), Ni(Ⅱ), Cu(Ⅱ) and Zn(Ⅱ) with rutin显示文摘 | KANG JINGWAN SU BIQUAN LU XIAOQUAN | 2005 | Indian Journal of Chemistry Section A : Inorganic Bio - inorganic Physical Theoretical & Analytical Chemistry 20052005，44，10： | 1 |
| 5 | Critical role for GRP78/BiP in the tumor microenvironment for neovascularization during tumor growth and metastasis显示文摘 | Dezheng Dong Christopher Stapleton Biquan Luo | 2011 | Cancer Res2011，71，8： | 1 |
| 6 | Study of photoelectrocatalytic degradation behavior of p-nitrophenol with nano-TiO2 modified film at a rotating ring-disk electrode显示文摘 | Su Biquan Ma Yongjun Du Yongling | 2009 | Electrochemistry Communications2009，11，6： | 1 |
| 7 | Research on nonlinear R/S method and its application in earthquake prediction显示文摘 | WANG Biquan HUANG Hanming FAN Hongshun | 1995 | Acta Seismologica Sinica1995，8，4： | 1 |
| 8 | Feasibility and safety of minimally invasive multivisceral resection for T4b rectal cancer:A 9-year review显示文摘BACKGROUND Colorectal cancer is the third most common cancer and the second highest cause of cancer-related mortality worldwide.About 5%-10%of patients are diagnosed with locally advanced rectal cancer(LARC)on presentation.For LARC invading into other structures(i.e.T4b),multivisceral resection(MVR)and/or pelvic ex-enteration(PE)remains the only potential curative surgical treatment.MVR and/or PE is a major and complex surgery with high post-operative morbidity.Minimally invasive surgery(MIS)has been shown to improve short-term post-operative outcomes in other gastrointestinal malignancies,but there is little evi-dence on its use in MVR,especially so for robotic MVR.This is a single-center retrospective cohort study from 1st January 2015 to 31st March 2023.Inclusion criteria were patients diagnosed with cT4b rectal cancer and underwent MVR,or stage 4 disease with resectable systemic metastases.Pa-tients who underwent curative MVR for locally recurrent rectal cancer,or me-tachronous rectal cancer were also included.Exclusion criteria were patients with systemic metastases with non-resectable disease.All patients planned for elective surgery were enrolled into the standard enhanced recovery after surgery pathway with standard peri-operative management for colorectal surgery.Complex sur-gery was defined based on technical difficulty of surgery(i.e.total PE,bladder-sparing prostatectomy,pelvic lymph node dissection or need for flap creation).Our primary outcomes were the margin status,and complication rates.Cate-gorical values were described as percentages and analysed by the chi-square test.Continuous variables were expressed as median(range)and analysed by Mann-Whitney U test.Cumulative overall survival(OS)and recurrence-free survival(RFS)were analysed using Kaplan-Meier estimates with life table analysis.Log-rank test was performed to determine statistical significance between cumulative estimates.Statistical significance was defined as P<0.05.Meier estimates with life table analysis.Log-rank test was performed to determine statistical significance between cumulative estimates.Statistical significance was defined as P<0.05.RESULTS A total of 46 patients were included in this study[open MVR(oMVR):12(26.1%),miMVR:36(73.9%)].Patients’American Society of Anesthesiologists score,body mass index and co-morbidities were comparable between oMVR and miMVR.There is an increasing trend towards robotic MVR from 2015 to 2023.MiMVR was associated with lower estimated blood loss(EBL)(median 450 vs 1200 mL,P=0.008),major morbidity(14.7%vs 50.0%,P=0.014),post-operative intra-abdominal collections(11.8%vs 50.0%,P=0.006),post-operative ileus(32.4%vs 66.7%,P=0.04)and surgical site infection(11.8%vs 50.0%,P=0.006)compared with oMVR.Length of stay was also shorter for miMVR compared with oMVR(median 10 vs 30 d,P=0.001).Oncological outcomes-R0 resection,recurrence,OS and RFS were comparable between miMVR and oMVR.There was no 30-d mortality.More patients underwent robotic compared with laparoscopic MVR for complex cases(robotic 57.1%vs laparoscopic 7.7%,P=0.004).The operating time was longer for robotic compared with laparoscopic MVR[robotic:602(400-900)min,laparoscopic:Median 455(275-675)min,P<0.001].Incidence of R0 resection was similar(laparoscopic:84.6%vs robotic:76.2%,P=0.555).Overall complication rates,major morbidity rates and 30-d readmission rates were similar between la-paroscopic and robotic MVR.Interestingly,3-year OS(robotic 83.1%vs 58.6%,P=0.008)and RFS(robotic 72.9%vs 34.3%,P=0.002)was superior for robotic compared with laparoscopic MVR.CONCLUSION MiMVR had lower post-operative complications compared to oMVR.Robotic MVR was also safe,with acceptable post-operative complication rates.Prospective studies should be conducted to compare short-term and long-term outcomes between robotic vs laparoscopic MVR. | Kai Siang Chan Biquan Liu Ming Ngan Aloysius Tan Kwang Yeong How Kar Yong Wong | 2024 | World Journal of Gastrointestinal Surgery2024，16，3： | 0 |
| 9 | Study on extraction kinetics ofα-cyclopentylmandelic acid enantiomers with hydroxyethyl-β-cyclodextrin as chiral selector显示文摘In this work,the kinetic study on reactive extraction ofα-cyclopentylmandelic acid(α-CPMA)enantiomers was performed in a Lewis cell using hydroxyethyl-β-cyclodextrin(HE-β-CD)as chiral selector.The enantioselective complexation equilibrium between HE-β-CD andα-CPMA enantiomers was studied by phase solubility method.The important process parameters affecting the initial extraction rate were separately studied and the reaction rate equations were deduced.The optimal conditions for kinetic study were as follows:stirring speed of 75 r·min^(-1),interfacial area of 12.56 cm^2,pH of 2.5,initial HE-β-CD concentration of 0.05 mol·L^(-1),initialα-CPMA concentration of 5 mmol·L^(-1),and temperature of 278 K.The reaction has been found to be first order inα-CPMA and second order in HE-β-CD with the forward rate constants of 2.056×10^(-3)m^6·mol^(-2)·s^(-1)and 1.459×10^(-3)m^6·mol^(-2)·s^(-1)for(S)-α-CPMA and(R)-α-CPMA,respectively.The complexation equilibrium constants were evaluated as 61 L·mol^(-1) and 117 L·mol^(-1)for(S)-α-CPMA and(R)-α-CPMA,and the intrinsic enantioselectivity is estimated as 1.92. | Panliang Zhang Pan Jiang Weifeng Xu Yu Liu Biquan Xiong Yunren Qiu Kewen Tang | 2018 | Chinese Journal of Chemical Engineering2018，26，1： | 0 |
| 10 | Comparison of edge cracking and tensile cracking in in-situ deformation at 150℃of Mg-2Zn-1.5Mn alloy sheet显示文摘The Mg-2Zn-1.5Mn alloy(ZM21)sheets were hot-rolled in a single pass at 150℃with different reductions through on-line heating rolling.Microstructures and edge cracking behavior of the rolled sheets were investigated.The in-situ tensile tests at 150℃were also carried out,the crack initiation and propagation were compared with the edge cracking behavior of ZM21 sheets prepared by on-line heating rolling.The results reveal that the edge cracks are most likely to originate in the rolling direction and normal direction(RD-ND)plane due to the secondary tensile stress along RD.Edge cracking becomes more severe with an increasing reduction.The edge cracks mainly initiate and propagate in the fine recrystallized grain areas and the junction of recrystallized grains and sub-grains with hard orientation.The in-situ tensile test indicates that micro-cracks mainly initiate at the triple junction of grain boundaries where grains have hard orientation with low basal Schmid factor(SF).Meanwhile,those cracks are more likely to propagate along the grain boundaries with maximum difference in basal Schmid factor.Besides,the crack initiation and propagation during the in-situ tensile deformation at 150℃are found not to be associated with the recrystallization. | Qiang Liu Jiangfeng Song Yuanding Huang Bin Jiang Biquan Xiao Fusheng Pan | 2022 | Journal of Materials Science & Technology2022，，17： | 0 |
| 11 | Experiment on Driving Precipitable Water Vapor from Ground-Based GPS Network in Chengdu Plain显示文摘全部的天顶延期的估计用 Bernese GPS 软件 V4 被导出。2 基于 GPS 数据基于地面的 GPS 的第一个测量实验从 7 月在时期期间在西南中国平凡的 Chengdu 联网到 2004 年 9 月的每 30 sfrom。然后,时时,可降水蒸汽(PWV ) 从全球放的系统(GPS ) 导出的 0.5 的估计从自动气象站(AWS ) 用气象学的数据被获得。从从无线电探空仪观测的 GPS 和那些的 PWVderived 的比较为 Chengdu 车站被给,与 RMS (根平均数平方) 3.09m 的差别。从雷送从 GPS 导出到那些的可降水蒸汽的一致性好。因为有 Bevi 的公式的 GPS PWV 和有雷送方法的 GPS PWV 的关系显示出高关联, Bevi 为估计加权的大气的平均温度的实验公式能是适用的 inChengdu 区域,这被结束。这个 GPS 测量实验的结果对积累在在西藏的高原并且为合作地通过许多学科学习地区性的大气的水汽的 spatial-temporalvariations 的东方方面定位的 Chengdu 区域从 GPS 导出的可降水蒸汽的学习两个都有用。 | LI Guoping HUANG Dingfa LIU Biquan CHEN Jiaona | 2007 | Geo-Spatial Information Science2007，10，3： | 0 |
| 12 | Wavelet-Galerkin Solutions forDifferential Equations显示文摘In order to get over the difficulty of introducing boundary conditions in solving differential equations by Daubechies wavelet, in this paper the wavelet-Galerkin numerical method is suggested to solve the differential equations, especially for the differential equation with boundary layer. The numerical results show that the algorithm described in this paper is effective both in the precision and the ability of detecting boundary layer position. | Sun Jianhua Yi Xuming Ye Biquan Shen Yuantong | 1998 | Wuhan University Journal of Natural Sciences1998，3，4： | 0 |
| 13 | CALCULATION OF FUEL SLOSHING AND ITS COUPLING VIBRATION WITH A TANK显示文摘The response of fuel-tank-sloshing to aircraft maneuver is a difficult mathematical problem to be solved. Beginning with setting up the mechanical model and the respective mathematical model, this paper uses both F.E. and B.E.M. to imitate the sloshing process. The paper has developed some special techniques to deal with strong nonlinear characteristics, and provided satisfactory numerical results of displacements and stress for low frequency, resonance, high frequency and fuel tank dynamic response characteristics. The program not only assures convergence and stability of the solution, but also has the function of graphic display. It is a valuable technique to deal with the strong nonlinear oscillation of fuel tank with large amplitude and moving boundary condition on free surface. | Sun Shuling, Liu Yuqi and Zhou AnningChinese Helicopter Research and Development Institute (CHRADI) Feng Zhenxing, Ye Biquan and Shen ChengwuWuhan University | 1991 | Chinese Journal of Aeronautics1991，6，3： | 0 |
| 14 | Silver(I) Architectures Based on Rigid TerpyridyI-Carboxyl Ligands: Synthesis, Crystal Structure and Electrochemical Properties显示文摘 | Biquan Zhang Xi Chen Fan Yu Min Su Bao Li Tianle Zhang | 2016 | Chinese Journal of Chemistry2016，34，10： | 0 |
| 15 | Fundamental Solution for Welding Problem by Two Dissimilar Isotropic Semi-Planes显示文摘FundamentalSolutionforWeldingProblembyTwoDissimilarIsotropicSemi-Planes￥YiXuming;YeBiquan(DepartmentofMathematics,WuhanUniver... | Yi Xuming Ye Biquan (Department of Mathematics,Wuhan University,Wuhan 430072,China) | 1996 | Wuhan University Journal of Natural Sciences1996，1，1： | 0 |
| 16 | KINGWAY'S DREAM AND GLORY--Interviewing Shenzhen Brewery Company Limited's Manager General, Yuan Youjian and his colleagues显示文摘Why could Kingway, brand of Shenzhen Brewery CompanyLimited (SBC). in so short time realize its dream and acquire glories? What is its secret in success? What do itsdecision-makers look like? With all these questions, reporter interviewed mangaer general Yuan Youjian. | Su Biquan & Xu Yutang | 1997 | 大经贸1997，，3： | 0 |
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