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C-arm-based flat-panel detector cone-beam computed tomography venography in the diagnosis of iliac vein compression syndrome

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Chinese Medical Journal 2021年第4期134卷 431-438页

作者： Chang-Ming Wang wei-liang zhang Xuan Li Department of Interventional Radiology and Vascular Surgery Peking University Third HospitalBeijing 100191China Department of Surgery Xi'an Fourth HospitalXi'anShaanxi 710004China

Background:C-arm-based flat-panel detector cone-beam computed tomography(CBCT)venography has never been used in the management of iliac vein compression syndrome(IVCS).This study aimed to determine the technical feasibility and safety of CBCT venography in the diagnosis of IVCS compared with conventional venography(CV).Methods:Twenty patients with clinical manifestations of lower extremity venous insufficiency were prospectively enrolled between May 2018 and December *** patient underwent both CV and CBCT *** feasibility and safety of CBCT venography were assessed by technical success rate and complication *** relationships between the clinical indexes and the results of CBCT venography and CV were analyzed with correlation *** consistency of the diagnosis of IVCS using each modality was analyzed by the kappa ***:The technical success rate was 100%for CBCT venography and for CV,without any *** with CV,CBCT venography was able to show more details of adjacent tissues which might be helpful for making etiological *** stenosis rate under CBCT venography had excellent consistency with that under CV(kappa=0.78,Chi-square test).The stenosis rate under CBCT venography was positively correlated with the presence of collateral veins(odds ratio 1.12,95%confidence interval:[1.00,1.26],P=0.049),while the stenosis rate under CV was ***,only one patient had a venous pressure gradient of more than 2 mmHg(1 mmHg=0.133 kPa).Conclusions:For the diagnosis of IVCS,C-arm-based CBCT venography was technically feasible,with good *** presence of collateral veins on CBCT was clinically significant.A C-arm fluoroscopy-based technique that combines CV and CBCT might be a promising protocol for the management of IVCS during a single session.

关键词： May-Thurner syndrome Diagnosis Cone-beam computed tomography Phlebography

Clinical analysis of patients with iatrogenic bile duct injury

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Hepatobiliary & Pancreatic Diseases International 2006年第2期5卷 283-285页

作者： wei-liang Yang, Dong-wei zhang and Xin-Chen zhang Department of General Surgery, Second Affiliated Hospital, Harbin Medical University, Harbin 150086, China Department of General Surgery Second Affiliated Hospital Harbin Medical University Harbin 150086 China. wlyang_2008@***

BACKGROUND: The main cause of iatrogenic bile duct injury is misidentification of the common bile duct as the cystic duct. In this article, we summarize the experience in the treatment of 112 patients with iatrogenic bile duct injury. METHOD: Clinical data of these patients treated at 10 hospitals of Songhua river area, Heilongjiang province, China from January 1978 to January 2005 were analyzed retrospectively. RESULTS: In 55.4% patients (62/112), iatrogenic bile duct injury was due to misidentification of the anatomy of Calot's triangle before cholecystectomy. Their diagnosis was based on clinical features, celiac puncture and imaging examination in which ultrasonography was most sensitive, giving a diagnostic rate of 97. 5%. Six types of injury were identified according to their locations, and type Ⅲ damage was commonly seen ( 92/112 ). The curative rate in this group was 95.5% (107/112). Eighty-seven patients (77.7%) underwent Roux-en-Y choledochojejunostomy with a cure rate of 94.3% (82/87). CONCLUSION: The prevention of iatrogenic bile duct injury lies in identifying the topography of extrahepatic bile ducts. Roux-en-Y choledochojejunostomy is usually the treatment of choice.

关键词： wounds, injury biliary tract diseases surgical procedures operative

Endovascular treatment of central venous stenosis and obstruction in hemodialysis patients

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Chinese Medical Journal 2013年第3期126卷 426-430页

作者： SHI Ya-xue YE Meng liang wei zhang Hao ZHAO Yi-ping zhang Ji-wei Department of Vascular Surgery Renji Hospital Shanghai Jiao Tong University School of Medcine Shanghai 200001 China

Background Central venous stenosis and obstruction （CVD） is a serious and prevalent challenge to both resolve the venous hypertension symptoms and maintain the pantency of the ipsilateral hemodialysis access in hemodialysis patients. This study aimed to summarize our experience of the endovascular management of the central venous stenosis or obstruction in hemodialysis patients. Methods Twenty-four haemodialysis cases of central vein stenosis or obstruction with ipsilateral functional vascular access in our hospital between July 2006 and February 2012 were treated by interventional therapy and the data were analyzed retrospectively. Results Eighteen males and six females with mean age of （66.4±13.8） years and manifesting with arm swelling and venous hypertension were enrolled; 62.5% of them had a history of catheterization. Venography showed stenotic lesion in 10 cases including eight cases of brachiocephalic vein stenosis and two cases of subclavian vein stenosis and 14 cases of obstruction lesions including seven cases of short brachiocephalic obstruction and seven cases of long segment obstruction. Interventional therapy was performed and the technique success rate was 83.3%. Percutaneous transluminal angioplasty （PTA） was performed in nine cases and stent was performed in 11 cases firstly. The symptoms of venous hypertension were resolved after intervention in all the cases. There was no major complication and death perioperatively. During follow-up, reintervention was done, the primary patency rates were （88.9±10.5）%, （64.8±10.5）% and （48.6±18.7）% at 3 months, 6 months and 1 year after treatment in the PTA group; （90.0±9.5）% and （77.1±14.4）% at 6 months and 1 year after treatment in the stent group, respectively. The secondary patency rates were （48.6±18.7）% in the PTA group and （83.3±15.2）% in the stent group 1 year after treatment, respectively. There was no significant difference between the two groups （primary patency, P=0.20; secondary patency, P=0.10）. Co

关键词： central venous stenosis hemodialysis percutaneous angioplasty stent

From waste to wealth:Coal tar residue derived carbon materials as low-cost anodes for potassium-ion batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 464-475页

作者： Zhonghua Lu Jun Shen Xin zhang Lingcong Chao liang Chen Ding zhang Tao wei Shoudong Xu College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024China College of Chemistry Taiyuan University of TechnologyTaiyuan 030024China School of Chemical Engineering and Pharmacy Wuhan Institute of TechnologyWuhan 430205China School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China

Carbon materials are widely recognized as highly promising electrode materials for various energy storage system *** tar residues(CTR),as a type of carbon-rich solid waste with high value-added utilization,are crucially important for the development of a more sustainable *** this study,we employed a straightforward direct carbonization method within the temperature range of 700-1000℃to convert the worthless solid waste CTR into economically valuable carbon materials as anodes for potassium-ion batteries(PIBs).The effect of carbonization temperature on the microstructure and the potassium ions storage properties of CTR-derived carbons(CTRCs)were systematically explored by structural and morphological characterization,alongside electrochemical performances *** on the co-regulation between the turbine layers,crystal structure,pore structure,functional groups,and electrical conductivity of CTR-derived carbon carbonized at 900℃(CTRC-900H),the electrode material with high reversible capacity of 265.6m Ah·g^(-1)at 50 m A·g^(-1),a desirable cycling stability with 93.8%capacity retention even after 100 cycles,and the remarkable rate performance for PIBs were ***,cyclic voltammetry(CV)at different scan rates and galvanostatic intermittent titration technique(GITT)have been employed to explore the potassium ions storage mechanism and electrochemical kinetics of *** indicate that the electrode behavior is predominantly governed by surface-induced capacitive processes,particularly under high current densities,with the potassium storage mechanism characterized by an“adsorption-weak intercalation”*** work highlights the potential of CTR-based carbon as a promising electrode material category suitable for high-performance PIBs electrodes,while also provides valuable insights into the new avenues for the high value-added utilization of CTR.

关键词： coal tar residue carbon materials anode potassium-ion batteries high value-added

Cross-talk between calcium and reactive oxygen species signaling

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Acta Pharmacologica Sinica 2006年第7期27卷 821-826页

作者： Yuan YAN Chao-liang wei Wan-rui zhang He-ping CHENG Jie LIU~1 Laboratory of Calcium Signaling,Institute of Molecular Medicine,Peking University,Beijing 100871,China Laboratory of Calcium Signaling Institute of Molecular Medicine Peking University Beijing China

Calcium(Ca2+)and reactive oxygen species(ROS)constitute the most importantintracellular signaling molecules participating in the regulation and integration ofdiverse cellular *** we briefly review cross-talk between the two promi-nent signaling systems that finely tune the homeostasis and integrate functional-ity of Ca2+and ROS in different types of ***2+modulates ROS homeostasisby regulating ROS generation and annihilation mechanisms in both the mitochon-dria and the *** redox regulation of Ca2+homeostasis occurs indifferent physiological and pathological processes,by modulating componentsof the Ca2+signaling toolkit and altering characteristics of local and global Ca2+***,interactions between Ca2+and ROS signaling systems canbe both stimulatory and inhibitory,depending on the type of target proteins,theROS species,the dose,duration of exposure,and the cell *** extensiveand complex cross-talk might enhance signaling coordination and integration,whereas abnormalities in either system might propagate into the other system andundermine the stability of both systems.

关键词： calcium reactive oxygen species signal transduction receptor cross talk

Joint Probabilistic Scheduling and Resource Allocation for Wireless Networked Control Systems

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IEEE/CAA Journal of Automatica Sinica 2025年第1期 258-260页

作者： Meng Zheng Lei zhang wei liang IEEE the State Key Laboratory of Robotics and the Key Laboratory of Networked Control Systems Shenyang Institute of Automation Chinese Academy of Sciences the University of Chinese Academy of Sciences

Dear Editor,This letter presents a joint probabilistic scheduling and resource allocation method(PSRA) for 5G-based wireless networked control systems(WNCSs). As a control-aware optimization method, PSRA minimizes the linear quadratic Gaussian(LQG) control cost of WNCSs by optimizing the activation probability of subsystems, the number of uplink repetitions, and the durations of uplink and downlink phases. Simulation results show that PSRA achieves smaller LQG control costs than existing works.

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Establishment of a pig model of combined pancreas-kidney transplantation

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World Journal of Gastroenterology 1999年第2期5卷 84-86页

作者： XU Ze Kuan, LIU Xun liang, zhang wei, MIAO Yi and DU Jing Hui

ＩＮＴＲＯＤＵＣＴＩＯＮＷｅｓｔｕｄｉｅｄｔｈｅｒｅｃｉｐｉｅｎｔａｎｄｇｒａｆｔｐａｔｈｏｐｈｙｓｉｏｌｏｇｉｃｃｈａｎｇｅｓａｆｔｅｒｔｒａｎｓｐｌａｎｔａｔｉｏｎ，ｔｈｅｉｎｄｕｃｅｍｅｎｔｏｆｉｍｍｕｎｏｔｏ... 详细信息

ＩＮＴＲＯＤＵＣＴＩＯＮＷｅｓｔｕｄｉｅｄｔｈｅｒｅｃｉｐｉｅｎｔａｎｄｇｒａｆｔｐａｔｈｏｐｈｙｓｉｏｌｏｇｉｃｃｈａｎｇｅｓａｆｔｅｒｔｒａｎｓｐｌａｎｔａｔｉｏｎ，ｔｈｅｉｎｄｕｃｅｍｅｎｔｏｆｉｍｍｕｎｏｔｏｌｅｒａｎｃｅ，ｔｈｅｒｅｇｕｌａ...

关键词： pancreas transplantation kidney transplantation pig animal model

Morphology Image Processing on Weld Pool

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微计算机信息 2006年第22期 219-220+292页

作者： liang,wei Shi,Yu zhang,Xiaowen (Computer science and technology dept, Changshu Institute of Technology, Changshu, 215500, China)

Digital image processing technology can be applied to calculating the characteristic parameters of shape of weld pool whilefulfilling the demand of timing constraint through *** results of the traditional pattern process method cannot get rid ofthe negative pole atomization area and the silk edge of the weld *** text has proposed the morphology method to deal withthe weld pool picture of aluminum *** paper introduces edge detect and extract *** the realization of image pro-cessing algorithm and the extraction the parameter of the weld pool shape are *** filter processing and Canny edgedetector are adapted to in this *** is proved that the algorithm has higher precision in the experiment.

关键词： Canny arithmetic operators Morphology image processing Edge extraction

The dopaminergic system and Alzheimer's disease

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Neural Regeneration Research 2025年第9期20卷 2495-2512页

作者： Yuhan zhang Yuan liang Yixue Gu International Medical College Chongqing Medical UniversityChongqingChina College of Pharmacy Chongqing Medical UniversityChongqingChina Department of Neurology The First Affiliated Hospital of Chongqing Medical UniversityChongqing Key Laboratory of NeurologyChongqingChina

Alzheimer's disease is a common neurodegenerative disorder in older *** its prevalence,its pathogenesis remains unclea *** addition to the most widely accepted causes,which in clude excessive amyloid-beta aggregation,tau hyperphosphorylation,and deficiency of the neurotransmitter acetylcholine,numerous studies have shown that the dopaminergic system is also closely associated with the occurrence and development of this *** is a crucial catecholaminergic neurotransmitter in the human ***-associated treatments,such as drugs that target dopamine receptor D and dopamine analogs,can improve cognitive function and alleviate psychiatric symptoms as well as ameliorate other clinical *** r,therapeutics targeting the dopaminergic system are associated with various adverse reactions,such as addiction and exacerbation of cognitive *** review summarizes the role of the dopaminergic system in the pathology of Alzheimer's disease,focusing on currently available dopamine-based therapies for this disorder and the common side effects associated with dopamine-related *** aim of this review is to provide insights into the potential connections between the dopaminergic system and Alzheimer's disease,thus helping to clarify the mechanisms underlying the condition and exploring more effective therapeutic options.

关键词： adverse drug reaction Alzheimer's disease catecholamine dopamine receptor dopamine receptor heterodimers dopaminergic system neurodegenerative disease neurotransmitter signaling pathways traditional Chinese medicine treatment