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Laparoscopic liver resection utilizing the ventral avascular area of the inferior vena cava:A retrospective cohort study

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World Journal of Gastroenterology 2025年第1期31卷 42-57页

作者： Kun Huang Zhu Chen Heng Xiao Hai-Yang Hu Xing-Yu Chen cheng-you du Xiang Lan Department of Hepatobiliary Surgery The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400000China Department of General Surgery Mianyang Hospital of Traditional Chinese MedicineMianyang 621000Sichuan ProvinceChina

BACKGROUND Laparoscopic liver resection(LLR)can be challenging due to the difficulty of establishing a retrohepatic tunnel under *** the third hepatic hilum before parenchymal transection often leads to significant liver mobilization,tumor compression,and bleeding from the short hepatic veins(SHVs).This study introduces a novel technique utilizing the ventral avascular area of the inferior vena cava(IVC),allowing SHVs to be addressed after parenchymal transection,thereby reducing surgical complexity and improving outcomes in in situ *** To introduce and evaluate a novel LLR technique using the ventral avascular area of the IVC and compare its short-term outcomes with conventional *** The clinical cohort data of patients with pathologically confirmed hepatocellular carcinoma or intrahepatic cholangiocarcinoma who underwent conventional LLR and novel LLR between July 2021 and July 2023 at the First Affiliated Hospital of Chongqing Medical University were retrospectively *** novel LLR,we initially separated the caudate lobe from the IVC using dissecting forceps along the ventral avascular area of the ***,we transected the parenchyma of the left and right caudate lobes from the caudal side to the cephalic side using the avascular area as a ***,we addressed the SHVs and finally dissected the root of the right hepatic vein or left hepatic *** short-term postoperative outcomes and oncological results of the two approaches were evaluated and *** A total of 256 patients were included,with 150(58.59%)undergoing conventional LLR and 106(41.41%)undergoing novel *** novel technique resulted in significantly larger tumor resections(6.47±2.96 cm vs 4.01±2.33 cm,P<0.001),shorter operative times(199.57±60.37 minutes vs 262.33±83.90 minutes,P<0.001),less intraoperative blood loss(206.92±37.09 mL vs 363.34±131.27 mL,P<0.001),and greater resection volume(345.11±31.40 mL vs 264.38±31.98 mL,P<0.001)comp

关键词： Laparoscopic liver resection Inferior vena cava Retrohepatic tunnel Short hepatic veins Complex liver tumors Intraoperative bleeding control

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Influences of Electrolytes on the Soap-free Emulsion Copolymerization of St-MMA-AA

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Chinese Chemical Letters 2006年第11期17卷 1503-1506页

作者： Rong Long LI cheng you KAN Yi du Ze Ping LI Department of Chemical Engineering and Key Laboratory of Advanced Materials of Ministry of Education Tsinghua University Beijing 100084

Monodisperse functional polymer microspheres with different particle size and with clean surface were prepared by batch soap-free emulsion polymerization of styrene, methyl methacrylate and acrylic acid in the presence of salts, and the influences of type and amount of electrolytes on polymerization process and particle morphology were investigated. Results showed that there was a critical concentration for different electrolyte to make polymerization process and the resultant emulsion stable, and the particle size increased with the increase of electrolyte concentration. The effect of metal ions was Ca^2＋〉〉K^＋〉Na^＋〉Li^＋, and the effect of haloids was Br〉Cl〉F. Keywords： Electrolyte, soap-free emulsion polymerization, polystyrene, latex particle morphology.

关键词： Electrolyte soap-free emulsion polymerization polystyrene latex particle morphology.

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Donor safety and remnant liver volume in living donor liver transplantation

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World Journal of Gastroenterology 2012年第48期18卷 7327-7332页

作者： Zheng-Rong Sh Lu-Nan Yan cheng-you du Department of Hepatobiliary Surgery The First Affiliated HospitalChongqing Medical University Liver Transplantation Division Department of SurgeryWest China HospitalSichuan University

AIM:To evaluate the relationship between donor safety and remnant liver volume in right lobe living donor liver transplantation(LDLT).METHODS:From July 2001 to January 2009,our liver transplant centers carried out 197 *** clinical data from 151 cases of adult right lobe living donors(not including the middle hepatic vein) were *** conditions of the three groups of donors were well matched in terms of the studied *** donors' preoperative data,intraoperative and postoperative data were calculated for the three groups:Group 1 remnant liver volume(RLV) 40%.Comparisons included the different remnant liver volumes on postoperative liver function recovery and the impact of systemic *** between remnant liver volume and post-operative complications were also ***:The donors' anthroposomatology data,op-eration time,and preoperative donor blood test indicators were calculated for the three *** significant differences were observed between the donors' gender,age,height,weight,and operation *** to the chengdu standard liver volume formula,the total liver volume of group 1 was 1072.88 ± 131.06 mL,group 2 was 1043.84 ± 97.11 mL,and group 3 was 1065.33 ± 136.02 *** three groups showed no statistically significant *** the volume of the remnant liver was less than 35% of the total liver volume,the volume of the remnant had a significant effect on the recovery of liver function and intensive care unit *** addition,the occurrence of complications was closely related to the remnant liver *** the volume of the remnant liver was more than 35% of the total liver volume,the remnant volume change had no significant effect on donor ***:To ensure donor safety,the remnant liver volume should be greater than the standard liver volume(35%) in right lobe living donor liver transplantation.

关键词： Donor safety Remnant liver volume Living donor Liver transplantation Complications grade

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Outcomes of simple saline-coupled bipolar electrocautery for hepatic resection

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World Journal of Gastroenterology 2014年第26期20卷 8638-8645页

作者： Jian-Yang Guo De-Wei Li Rui Liao Ping Huang Xian-Bing Kong Ji-Ming Wang Hong-Lin Wang Shi-Qiao Luo Xiong Yan cheng-you du Department of Hepatobiliary Surgery The First Affiliated HospitalChongqing Medical University

AIM: To evaluate the application of bipolar coagulation (BIP) in hepatectomy by comparing the efficacy of BIP alone, cavitron ultrasonic surgical aspirator (CUSA) + BIP and conventional clamp crushing (CLAMP).

关键词： Hepatectomy Surgical procedures Blood loss Complications Hospital stay Comparative study

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Impact of simultaneous splenectomy and orthotopic liver transplantation in patients with end-stage liver diseases and splenic hyperfunction

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Hepatobiliary & Pancreatic Diseases International 2012年第5期11卷 489-493页

作者： De-Wei Li, cheng-you du, Bin Fan, Ping Huang, Shi-Qiao Luo , Qiang He Department of Hepatobiliary Surgery, First Affiliated Hospital, Chongqing Medical University, Chongqing 400016,China Department of Hepatobiliary Surgery First Affiliated Hospital Chongqing Medical University Chongqing 400016 Chongqing China

BACKGROUND:Whether splenectomy can be performed simultaneously during liver transplantation in patients with end-stage liver diseases complicated by hypersplenism remains controversial. This study aimed to compare the impact of simultaneous splenectomy on high-and low-risk liver transplant patients with end-stage liver diseases and severe hypersplenism. METHODS:Forty-two patients with end-stage liver diseases complicated by severe hypersplenism who had undergone orthotopic liver transplantation were enrolled in this study. Splenectomy was performed in 19 of the patients. The 42 patients were grouped according to the risk of liver diseases and operations they received. Patients were considered to be at high-risk if they had at least one of the following conditions: preoperative prothrombin time >5 seconds, portal vein thrombosis, and severe perisplenitis. High-risk patients who had undergone splenectomy were classified into group A, whereas high-risk patients who had not undergone splenectomy were classified into group B. Low-risk patients who had undergone splenectomy were classified into group C, and low-risk patients who had spleen preservation were classified into group D. Operative time, intraoperative blood loss, postoperative bleeding, pulmonary infection, perioperative mortality, and postoperative platelet recovery were analyzed. RESULTS: Operative time and intraoperative blood loss were greater in group A than in groups B-D (P0.05). In group A, 3 patients had postoperative bleeding, 5 had pulmonary infection, and 2 had perioperative mortality,which was higher than any other group, but postoperative bleeding, pulmonary infection, and perioperative mortality were similar to those in groups C and D. In patients undergoing simultaneous splenectomy, platelet counts recovered within 6 months after surgery. Thrombocytopenia was sustained in 3 of the 23 patients who did not undergo simultaneou

关键词： liver transplantation splenectomy hypersplenism risk factors

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Protective effect of glucocorticoid-free immunosuppressive regimen in allogenic islet transplantation

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Hepatobiliary & Pancreatic Diseases International 2006年第1期5卷 43-47页

作者： cheng-you du and Er-Kan Xu Department of Hepatobiliary Surgery & Liver Transplantation, First Affiliated Hospital, Chongqing University of Medical Sciences, Chongqing 400016, China Department of Hepatobiliary Surgery & Liver Transplantation First Affiliated Hospital Chongqing University of Medical Sciences Chongqing 400016 China. duchengyou@***

BACKGROUND: The most common complication after allogenic islet transplantation is rejection. This study was to evaluate the effect of anti-rejection of glucocorticoid-free immunosuppressive regimen on allogenic islet transplantation. METHODS: Tacrolimus(FK506)+mycophenolate mofetil (MMF) and FK506+MMF+prednisone (Pred) were administered respectively for 2 weeks to inhibit rejection after allogenic islet transplantation in rats, which were compared with the control group. The concentrations of blood glucose, insulin and C-peptide were determined dynamically in recipients and the sites of transplantation were observed morphologically. RESULTS: As compared with the control group without immunosuppressive agents, FK506+MMF and FK506+MMF+Pred could prolong the survival time of grafts significantly. There were many morphologically intact islets in the liver of recipients 2 months after transplantation. Group FK506+MMF kept normal levels of blood glucose, insulin and C-peptide beyond 60 days after transplantation. In contrast, group FK506+MMF+Pred secreted less C-peptide(P<0.05) and maintained a higher level of blood glucose concentration (P<0.01) after the operation. There was no significant difference in insulin concentrations between the two groups. The level of blood glucose beyond the first 2 weeks after drug withdrawal in group FK506+MMF+Pred decreased obviously (P<0.05), and the secretion of insulin　and C-peptide increased. These results were compared with　those the first 2 weeks after transplantation and the first 2　weeks after drug withdrawal. CONCLUSIONS: Both regimens of FK506+MMF and FK506+MMF+Pred could provide effective immunosup-pression. Moreover the combined glucocorticoid-free immunosuppressive strategy of low-dose FK506 and MMF could protect islet grafts in islet transplantation without diabetogenic side-effects.

关键词： immunosuppressive agent islets of langerhans transplantation glucocorticoid rat

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广义相对论二体问题比内方程的精确解探讨

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大学物理 2020年第11期39卷 31-35页

作者：程有度昆明物理研究所红外探测器中心云南昆明650223

根据广义相对论二体问题比内微分方程的函数积分形式的精确解,得到3类精确轨迹曲线,其中两类可以积出解析解.爱因斯坦就是通过对这个函数积分形式的精确解直接进行近似简化计算,得到了与迭代近似解方法高度一致的水星进动值的高精度计... 详细信息

根据广义相对论二体问题比内微分方程的函数积分形式的精确解,得到3类精确轨迹曲线,其中两类可以积出解析解.爱因斯坦就是通过对这个函数积分形式的精确解直接进行近似简化计算,得到了与迭代近似解方法高度一致的水星进动值的高精度计算结果,这相互印证了不同解法的计算精度.通过计算广义相对论比内方程的极点,得到行星轨道远日点、近日点的精确计算公式,以及圆形轨道的精确半径,与牛顿力学结果相差约5 km,差值与行星轨道半径关系不大,主要由太阳质量决定.上述差值也是近似解极径的最大绝对误差.运用高精度数学计算软件计算数值积分,可以得到广义相对论二体问题的精确数值轨迹.

关键词：广义相对论二体问题比内方程水星进动精确解

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Preparation of FeCoNi medium entropy alloy from Fe^(3+)-Co^(2+)-Ni^(2+)solution system

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 92-101页

作者： Zongyou cheng Qing Zhao Mengjie Tao Jijun du Xingxi Huang chengjun Liu Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) Northeastern UniversityShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China Engineering Research Center of Frontier Technologies for Low-carbon Steelmaking(Ministry of Education) Shenyang 110819China

In recent years,medium entropy alloys have become a research hotspot due to their excellent physical and chemical *** controlling reasonable elemental composition and processing parameters,the medium entropy alloys can exhibit similar properties to high entropy alloys and have lower *** this paper,a FeCoNi medium entropy alloy precursor was prepared via sol-gel and coprecipitation methods,respectively,and FeCoNi medium entropy alloys were prepared by carbothermal and hydrogen *** phases and magnetic properties of FeCoNi medium entropy alloy were *** showed that FeCoNi medium entropy alloy was produced by carbothermal and hydrogen reduction at 1500℃.Some carbon was detected in the FeCoNi medium entropy alloy prepared by carbothermal *** alloy prepared by hydrogen reduction was uniform and showed a relatively high ***,the hydrogen reduction product exhibited better saturation magnetization and lower coercivity.

关键词： medium entropy alloy sol-gel co-precipitation carbothermal hydrogen reduction

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Actively tunable electromagnetically induced transparency in hybrid Dirac-VO2 metamaterials

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Optoelectronics Letters 2025年第1期 13-20页

作者： DI Ke XIE Meng XIA Huarong cheng Anyu LIU Yu du Jiajia Department of Optoelectronic Engineering Chongqing University of Post and Telecommunications Chongqing Key Laboratory of Autonomous Navigation and Microsystem Chongqing University of Posts and Telecommunications Department of Automation Chongqing University of Post and Telecommunications

In this paper, we present a metamaterial structure of Dirac and vanadium dioxide（VO2） and investigate its optical properties using the finite-difference time-domain（FDTD） technique. Using the phase transition feature of VO2, the design can realize active tuning of the plasmon induced transparency（PIT） effect at terahertz frequency, thereby converting from a single PIT to a double-PIT. When VO2is in the insulating state, the structure is symmetric to obtain a single-band PIT effect. When VO2is in the metallic state, the structure turns asymmetric to realize a dual-band PIT effect. This design provides a reference direction for the design of actively tunable metamaterials. Additionally, it is discovered that the transparent window's resonant frequency and the Fermi level in this structure have a somewhat linear relationship. In addition, the structure achieves superior refractive index sensitivity in the terahertz band, surpassing 1 THz/RIU. Consequently, the design exhibits encouraging potential for application in refractive index sensors and optical switches.

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Moment Redistribution Effect of the Continuous Glass Fiber Reinforced Polymer-Concrete Composite Slabs Based on Static Loading Experiment

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Structural durability & Health Monitoring 2025年第1期19卷 105-123页

作者： Zhao-Jun Zhang Wen-Wei Wang Jing-Shui Zhen Bo-cheng Li De-cheng Cai Yang-Yang du Hui Huang Offshore Oil Engineering Co.Ltd. Tianjin300461China Department of Bridge Engineering School of TransportationSoutheast UniversityNanjing211189China

This study aimed to investigate the moment redistribution in continuous glass fiber reinforced polymer(GFRP)-concrete composite slabs caused by concrete cracking and steel bar yielding in the negative bending moment *** experimental bending moment redistribution test was conducted on continuous GFRP-concrete composite slabs,and a calculation method based on the conjugate beam method was *** composite slabs were formed by combining GFRP profiles with a concrete layer and supported on steel beams to create two-span continuous composite slab *** methods,epoxy resin bonding,and stud connection,were used to connect the composite slabs with the steel *** experimental findings showed that the specimen connected with epoxy resin exhibited two moments redistribution phenomena during the loading process:concrete cracking and steel bar yielding at the internal *** contrast,the composite slab connected with steel beams by studs exhibited only one-moment redistribution phenomenon throughout the loading *** the concrete at the internal support cracked,the bending moment decreased in the internal support section and increased in the midspan *** the steel bars yielded,the bending moment further decreased in the internal support section and increased in the mid-span *** GFRP profiles do not experience cracking,there was no significant decrease in the bending moment of the mid-span *** test specimens experienced compressive failure of concrete at the mid-span *** results showed good agreement between the calculated and experimental values of bending moments in the mid-span section and internal support *** proposed model can effectively predict the moment redistribution behavior of continuous GFRP-concrete composite slabs.

关键词： Moment redistribution GFRP-concrete composite slabs bending moment experimental study analysis model

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