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Evaluating effectiveness and safety of combined percutaneous transhepatic gallbladder drainage and laparoscopic cholecystectomy in acute cholecystitis patients:Meta-analysis

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World Journal of Gastrointestinal Surgery 2024年第5期16卷 1407-1419页

作者： Yu Li wei-ke xiao xiao-Jun Li Hui-Yuan Dong Department of General Surgery No.942 Hospital of PLAYinchuan 750004Ningxia Hui Autonomous RegionChina

BACKGROUND Acute cholecystitis(AC)is a common disease in general *** cholecystectomy(LC)is widely recognized as the"gold standard"surgical procedure for treating *** low-risk patients without complications,LC is the recommended treatment plan,but there is still controversy regarding the treatment strategy for moderate AC patients,which relies more on the surgeon's experience and the medical platform of the visiting *** transhepatic gallbladder puncture drainage(PTGBD)can effectively alleviate gallbladder inflammation,reduce gallbladder wall edema and adhesion around the gallbladder,and create a"time window"for elective *** To compare the clinical efficacy and safety of LC or PTGBD combined with LC for treating AC patients,providing a theoretical basis for choosing reasonable surgical methods for AC *** In this study,we conducted a clinical investigation regarding the combined use of PTGBD tubes for the treatment of gastric cancer patients with *** performed searches in the following databases:PubMed,Web of Science,EMBASE,Cochrane Library,China National Knowledge Infrastructure,and Wanfang *** search encompassed literature published from the inception of these databases to the ***,relevant data were extracted,and a meta-analysis was conducted using RevMan 5.3 *** A comprehensive analysis was conducted,encompassing 24 studies involving a total of 2564 *** patients were categorized into two groups:1371 in the LC group and 1193 in the PTGBD+LC *** outcomes of the meta-analysis revealed noteworthy disparities between the PTGBD+LC group and the LC group in multiple dimensions:(1)Operative time:Mean difference(MD)=17.51,95%CI:9.53-25.49,P<0.01;(2)Conversion to open surgery rate:Odds ratio(OR)=2.95,95%CI:1.90-4.58,P<0.01;(3)Intraoperative bleeding loss:MD=32.27,95%CI:23.03-41.50,P<0.01;(4)Postoperative hospital stay:MD=1.44,95%CI:0.14-2.73,P=0.03;(5)Overall posto

关键词： Acute cholecystitis Laparoscopic cholecystectomy Percutaneous transhepatic gallbladder drainage Metaanalysis Efficacy

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非对称针尖结构对远红外超材料谐振性能的影响研究

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红外与毫米波学报 2024年第3期43卷 322-328页

作者：陆小森吴旭魏小柯王俊杰王奇亮金钻明彭滟上海理工大学光电信息与计算机工程学院上海200093

为提高远红外超材料的品质因子Q和检测灵敏度,本文研究了一种用于金属远红外超材料的非对称针尖设计。以传统双开口方形谐振环为模型,通过理论模拟,研究了开口狭缝针尖角度变化对其电场分布、谐振频谱以及品质因子Q的影响。结果表明,非... 详细信息

为提高远红外超材料的品质因子Q和检测灵敏度,本文研究了一种用于金属远红外超材料的非对称针尖设计。以传统双开口方形谐振环为模型,通过理论模拟,研究了开口狭缝针尖角度变化对其电场分布、谐振频谱以及品质因子Q的影响。结果表明,非对称针尖增强了谐振环的表面电场局域性,减小了谐振峰的半峰全宽,并使品质因子Q提高到传统谐振环(非针尖设计)的三倍以上。该研究结果为开发高灵敏远红外超材料传感器提供了新的思路,并为传统开口谐振环提出了一种简单实用的Q因子优化方法。

关键词：太赫兹传感器超材料远红外品质因子Q

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9Ni钢焊接接头弯曲试验开裂分析

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船海工程 2024年第1期53卷 107-111页

作者：杨伟锋翁耿贤魏笑科徐勋沈洪涛广州文船重工有限公司技术开发部广州510725 中船黄埔文冲船舶有限公司重工事业部广州510715

针对弯曲试验中9Ni钢焊接经常发生焊接接头试样开裂,焊接接头的质量不满足LNG液货罐产品的建造标准要求的问题,对9Ni钢焊接工艺进行改进,通过系列焊接试验,找出弯曲试样开裂的原因并制定相应的改进对策,将改进后的焊接工艺用于试板焊接... 详细信息

针对弯曲试验中9Ni钢焊接经常发生焊接接头试样开裂,焊接接头的质量不满足LNG液货罐产品的建造标准要求的问题,对9Ni钢焊接工艺进行改进,通过系列焊接试验,找出弯曲试样开裂的原因并制定相应的改进对策,将改进后的焊接工艺用于试板焊接,试板焊接接头的各项力学性能满足规范要求,且附加的侧向弯曲试样弯曲后也没有出现开裂缺陷。将新焊接工艺应用于9 500 m^(3)LNG运输船C型液货罐的焊接,所有焊接试板均选用10 mm厚的侧弯试样弯曲检测合格,9Ni钢的焊接质量获得了船级社认可,侧弯试样的使用使焊接试板的长度尺寸缩减了一半,既提高了检测效率又节省了试验材料。

关键词： LNG液货罐 9Ni钢焊接工艺弯曲试验开裂对策

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漂浮式海上风电装备码头总装工艺技术

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广州航海学院学报 2024年第1期32卷 51-54页

作者：魏笑科彭梓莹陈湘勇邹福顺刘晓彤广州文船重工有限公司技术开发部广东广州510725

码头总装是漂浮式海上风电装备建造的关键技术之一,漂浮式海上风电装备体积大、重量重、构件多,总装难度大.为解决这一难题,以“扶摇号”漂浮式海上风电装备为研究对象,创新性地提出在码头完成平台风机总装、整体拖航至风场位置的方案,... 详细信息

码头总装是漂浮式海上风电装备建造的关键技术之一,漂浮式海上风电装备体积大、重量重、构件多,总装难度大.为解决这一难题,以“扶摇号”漂浮式海上风电装备为研究对象,创新性地提出在码头完成平台风机总装、整体拖航至风场位置的方案,解决了漂浮式海上风电平台现场安装风机稳性较差的安全性问题.在建造过程中通过方案分析、工艺改进等系统性开展了基于漂浮式基础的塔筒安装定位技术、机舱吊装技术与叶片安装技术研究,最终形成了一套切实可行的总装技术方案,为漂浮式海上风电产业的发展提供助力.

关键词：漂浮式海上风电装备码头总装工艺技术

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Pituitary metastasis from lung adenocarcinoma:A case report

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World Journal of Clinical Cases 2024年第15期12卷 2597-2605页

作者： Qing Wang xiao-wei Liu ke-Yu Chen Department of Critical Care Medicine Chengdu First People’s HospitalChengdu 610000Sichuan ProvinceChina Department of Neurosurgery Chengdu Second People's HospitalChengdu 610017Sichuan ProvinceChina Department of the First Clinical Medical College Lanzhou UniversityLanzhou 730000Gansu ProvinceChina Evidence Based Medicine Center School of Basic Medical SciencesLanzhou UniversityLanzhou 730000Gansu ProvinceChina

BACKGROUND Pituitary gland metastasis is an unusual event,and pituitary metastasis from lung adenocarcinoma is extremely rare and associated with poor *** date,approximately 15 cases have been *** SUMMARY Here,we present the case of a 64-year-old woman with pituitary metastasis derived from lung adenocarcinoma,which was difficult to distinguish from other sellar *** patient presented to the neurosurgery clinic with blurred vision and intermittent *** hospitalization,brain computed tomography(CT)and magnetic resonance imaging revealed a pituitary *** CT revealed irregular nodules in the basal segment of the lower lobe of the left lung,which were likely lung *** emission tomography-CT revealed a carbohydrate metabolism tumor in the lungs and sellar region,which was considered *** pathological examination of the sellar tumor revealed lung *** Excision of pituitary metastases combined with radiotherapy and chemotherapy should be a priority treatment for patients with pituitary metastasis.

关键词： Pituitary metastasis Lung adenocarcinoma Prolactin Sellar region tumors Case report

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Neural Mechanism Underlying Task-Specific Enhancement of Motor Learning by Concurrent Transcranial Direct Current Stimulation

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Neuroscience Bulletin 2023年第1期39卷 69-82页

作者： Ying Wang Jixian Wang Qing-Fang Zhang ke-wei xiao Liang Wang Qing-Ping Yu Qing Xie Mu-Ming Poo Yunqing Wen Institute of Neuroscience State Key Laboratory of NeuroscienceKey Laboratory of Primate NeurobiologyCenter for Excellence in Brain Science and Intelligence TechnologyChinese Academy of SciencesShanghai200031China University of Chinese Academy of Sciences Beijing100049China School of Life Science and Technology ShanghaiTech UniversityShanghai201210China Department of Rehabilitation Medicine Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghai200025China Shanghai Center for Brain Science and Brain-Inspired Intelligence Technology Lingang LaboratoryShanghai201210China

The optimal protocol for neuromodulation by transcranial direct current stimulation(tDCS)remains *** the rotarod paradigm,we found that mouse motor learning was enhanced by anodal tDCS(3.2 mA/cm^(2))during but not before or after the performance of a ***-task experiments showed that motor learning enhancement was specific to the task accompanied by anodal *** using a mouse model of stroke induced by middle cerebral artery occlusion showed that concurrent anodal tDCS restored motor learning capability in a task-specific *** in vivo Ca^(2+)imaging further showed that anodal tDCS elevated and cathodal tDCS suppressed neuronal activity in the primary motor cortex(M1).Anodal tDCS specifically promoted the activity of task-related M1 neurons during task performance,suggesting that elevated Hebbian synaptic potentiation in task-activated circuits accounts for the motor learning ***,application of tDCS concurrent with the targeted behavioral dysfunction could be an effective approach to treating brain disorders.

关键词： Motor learning tDCS effect Neural mechanism of tDCS Neuronal excitability Stroke model mouse

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Sensing properties and mechanisms of LaF_(3)-Co_(3)O_(4) nanorods for low-concentration methanol detection

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Rare Metals 2024年第5期43卷 2193-2204页

作者： xiao-Xi He Hong-Feng Chai Yi-Wen Zhou ke-wei Liu Ze-Xin Yu Chao Zhang College of Mechanical Engineering Yangzhou UniversityYangzhou225127China Institutefor Manufacturing Technologies of Ceramic Components and Composites(IMTCCC) University of Stuttgart70569 StuttgartGermany

Methanol is one of the characteristic gases that distinguish between healthy individuals and lung cancer(LC)lesions in exhaled human *** concentration in exhaled breath is generally below one part per million(1×10^(-6)).The second-phase composite is widely regarded as one of the methods to improve the gas-sensing perfor-mance of metal oxide semiconductor(MOS)*** this study,LaF_(3)-Co_(3)O_(4) was synthesized by a simple hydrothermal method to enhance its low-concentration methanol gas-sensing performance.5 at%LaF_(3)-Co_(3)O_(4) nanorods exhibited excellent methanol detection performance,including a wider linear detection concentration range(0.2×10^(-6)~5×10^(-6)),a response value exceeding 4.0 for 1×10^(-6)methanol at 275°C and 75%relative humidity(RH),long-term stability(maximum deviation within 15%over 2 weeks),and excellent *** mechanism of performance enhancement was studied using various techniques,and density functional *** special spinel structure of Co_(3)O_(4),the high ionic migration of F-in LaF_(3),the larger specific surface area of 5 at%LaF_(3)-Co_(3)O_(4) nanorods,and the generated crystal defects all explain the excellentmethanol gas-sensing *** work provides a novel route to prepare MOS composite materials for low-concentration methanol gas detection.

关键词： Gas sensor LaF_(3) Co_(3)O_(4) Methanol Lung cancer

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High-sensitivity formaldehyde gas sensor based on Ce-doped urchin-like SnO_(2) nanowires derived from calcination of Sn-MOFs

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Frontiers of Materials Science 2024年第1期18卷 29-43页

作者： wei xiao wei Yang Shantang Liu Hubei key Lab of Novel Reactor&Green Chemical Technology School of Chemistry and Environmental EngineeringWuhan Institute of TechnologyWuhan 430073China Hubei key Laboratory of Wudang Local Chinese Medicine Research Department of ChemistrySchool of Pharmaceutical SciencesHubei University of MedicineShiyan 442000China

Metal-organic frameworks(MOFs)have attracted widespread attention due to their regular structures,multiple material centers,and various *** are always considered as one kind of ideal templates for developing highly sensitive and selective gas *** this study,the advantages of MOFs with the high specific surface area(71.9891 m^(2)·g^(-1))and uniform morphology were fully utilized,and urchin-like SnO_(2) nanowires were obtained by the hydrothermal method followed by the calcination using Sn-MOFs consisting of the ligand of C_(9)H_(6)O_(6)(H_(3)BTC)and Sn/Ce center ions as sacrificial *** unique urchin-like nanowire structure facilitated gas diffusion and adsorption,resulting in superior gas sensitivity.A series of Ce-doped SnO_(2) nanowires with different doping ratios were synthesized,and their gas sensing properties towards formaldehyde were *** resulted Ce-SnO_(2) was revealed to have high sensitivity(201.2 at 250℃),rapid response(4 s),long-term stability,and good repeatability for formaldehyde sensing,and the gas sensing mechanism of Ce-SnO_(2) exposed to formaldehyde was also systematically discussed.

关键词： Ce-SnO_(2) SnO_(2) gas sensor formaldehyde Sn-MOF

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A novel Ce_(0.485)Zr_(0.485)Y_(0.03)O_(2) composite oxide with surface doping of Y and its application in Pd-only three-way catalyst

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Rare Metals 2024年第2期43卷 749-757页

作者： Zheng Zhao wei-Xin Zhao Yong-Qi Zhang Mei-Sheng Cui Yong-ke Hou Dong-Ming Chen Juan-Yu Yang Zong-Yu Feng xiao-wei Huang National Engineering Research Center for Rare Earth Grirem Advanced Materials Co.Ltd.GRINM Group Corporation LimitedBeijing100088China Griem Hi-Tech Co.Ltd. Langfang065000China Rare Earth Functional Materials(Xiong’an)Innovation Venter Co.Ltd. Baoding071700China

The ceria-zirconia compound oxide-supported noble metal Pd(Pd@CZ)is widely used in three-way ***,the surface structure of CZ plays an important role in catalytic activity of ***,how to regulate the surface structure of CZ and clarify the structure–activity relationship is still a *** this paper,a strategy is proposed to develop high activity Pd@CZ nanocatalysts by tuning Y doping sites in *** precipitate-deposition method is developed to prepare the novel Ce_(0.485)Zr_(0.485)Y_(0.03)O_(2) composite with surface doping of Y(CZ-Y-S).In addition,the Pd@CZ-Y-S(Pd supported on CZ-Y-S)exhibits superior catalytic activity for HC,CO,and NO oxide,wherein,for CO and C_(3)H_(6) oxidation,the low-temperature activity of Pd@CZ-Y-S is still 20%higher than that of Pd@CZ-Y-B(Y bulk doping)and commercial Pd@CZ after 1000℃/4 h *** effect mechanism is further studied by density functional theory(DFT)*** with Pd@CZ-Y-B,Pd@CZ-Y-S shows the lower CO oxide reaction energy barriers due to the weaker adsorption strength of *** Y surface doping strategy could provide valuable insights for the development of highly efficient Pd@CZ catalyst with extensive applications.

关键词： Rare earth Ceria-zirconia-supported Pd Surface doping Experiment and theory Catalytic application

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Investigation of mechanical and electrical characteristics of selfsensing pneumatic torsional actuators

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Science China(Technological Sciences) 2024年第1期67卷 130-142页

作者： xiao wei HU DeAn HU GuoLiang xiao YiHua key Laboratory of Conveyance and Equipment Ministry of EducationEast China Jiaotong UniversityNanchang 330013China key Laboratory of Advanced Design and Simulation Techniques for Special Equipment Ministry of EducationHunan UniversityChangsha 410082China

Soft pneumatic actuators are one of the most promising actuation for soft robots,and great achievements have been *** it remains challenging to endow sensing capabilities to pneumatic actuators,especially for the sensing ability originating directly from the actuator ***,a self-sensing pneumatic torsional actuator(SPTA)is designed based on the electromagnetic induction effect and magnetically responsive *** SPTA can generate feedback voltage and current with the deformation,in which the sensing function comes from its inherent *** investigate the mechanical and electrical characteristics,an experimental platform and a finite element model are established,*** find that the torsion angle and output torque increase in nonlinear with the actuating *** maximum torsion angle is 66.35°,which is 84.34%of that for the actuator fabricated by pure *** maximum output torque(24.9 N mm)improves by 23.19%compared with the actuator made by pure *** regards the electrical characteristics,the maximum feedback voltage and current are 2.90μV and 29.50 nA when the SPTA is actuated by a pressure of−40 *** also demonstrate that the relationship between the torsion angle and the magnetic flux change is approximately ***,the number of turns of wires,magnetic powders contents,and magnetic direction on the feedback voltage and current are *** show that the feedback voltage and current can be enhanced by increasing the number of turns and magnetic powders *** envision that the SPTA would be promising for soft robots to realize their accuracy control and intelligentization.

关键词： pneumatic torsional actuators self-sensing feedback voltage finite element modeling soft robots

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