检索结果-南通市图书馆

Successful occluding by absorbable sutures for epicardial collateral branch perforation

在线全文

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2018年第10期15卷 653-656页

作者： Li SHENG yong-Tai gong Dang-Hui SUN Yue LI Department of Cardiovascular the First Affiliated Hospital of Harbin Medical UniversityHarbinChina

In order to improve the success rate of chronic total occlusion (CTO)percutaneous coronary intervention (PCI), retrograde approach has been attracted more *** study reported the collateral perforation rate was 6.9% in retrograde CTO PCI.[1,2] Collateral related perforations were higher in patients with the epicardial collateral than that with the septal collateral.[3]Several techniques have been developed to deal with the collateral branch ***,we described the treatment of epicardial collateral branch perforation by absorbable suture segments embolization through microcatheter during retrograde CTO PCI.

关键词： Epicardial collateral branch perforation Occluding by absorbable sutures Percutaneous coronary intervention

Long-term survival of patients with hepatocellular carcinoma with hepatic,pulmonary,peritoneal and rare colon metastasis:A case report

在线全文

学校读者我要写书评

暂无评论

世界胃肠外科杂志:英文版(电子版) 2023年第8期15卷 1819-1824页

作者： yong-Qiang gong Tai-Liang Lu Chao-Wu Chen Department of Gastrointestinal Surgery Hunan Provincial People’s HospitalThe First Affiliated Hospital of Hunan Normal UniversityChangsha 410005Hunan ProvinceChina Department of Gastrointestinal Surgery Hunan Provincial People’s HospitalChangsha 410005Hunan ProvinceChina

BACKGROUND Hepatocellular carcinoma(HCC)is a highly malignant cancer that often metastasizes and has a poor *** tract metastases are rare,and colon metastases are even *** long-term survival of patients with multiple intrahepatic and extrahepatic metastases,especially to the colon,has not been previously *** SUMMARY We present an atypical clinical case of a patient with liver,right lung,peritoneal,and colon metastases diagnosed successively following hepatic resection for primary *** treatment,including partial liver,lung and colon resection,palliative management such as systemic chemotherapy,trans-arterial chemoembolization,targeted therapy with sorafenib,and cryotherapy were *** his early metastases,the patient remained relatively healthy for 8 years after *** This case indicates that comprehensive treatment is beneficial for certain patients with metastatic *** should be alert as to the possibility of rare site metastatic tumors that may be easily misdiagnosed as primary tumors.

关键词： Hepatocellular carcinoma Multiple metastasis Rare colon metastasis Comprehensive treatments Long-term survival Case report

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

模糊自抗扰双容水箱液位控制器设计

制造业自动化 2024年第4期46卷 166-169,178页

作者：周宣征张公永张盛峰山东航空学院电气工程学院滨州256600 中国地震局地震预测研究所北京100036

为了提高自抗扰控制应用下双容水箱控制系统的快速性和抗扰能力,在传统自抗扰控制技术基础上提出一种模糊自抗扰双容水箱液位控制器方法。分析了系统模型,建立系统扰动模型和状态观测器,并通过仿真分析观测器性能,设计了模糊自抗扰控制... 详细信息

为了提高自抗扰控制应用下双容水箱控制系统的快速性和抗扰能力,在传统自抗扰控制技术基础上提出一种模糊自抗扰双容水箱液位控制器方法。分析了系统模型,建立系统扰动模型和状态观测器,并通过仿真分析观测器性能,设计了模糊自抗扰控制器,利用模糊算法提高自抗扰控制器的快速性,通过仿真分别对PID控制与自抗扰控制,模糊自抗扰与自抗扰控制两对组合进行分析对比。仿真结果表明,模糊自抗扰控制方法相对于自抗扰控制和PID方法响应速度更快,抗干扰能力更强,具有一定的应用价值。

关键词：模糊控制自抗扰控制液位控制双容水箱

Enhanced reversibility of the magnetoelastic transition in(Mn,Fe)2(P,Si)alloys via minimizing the transition-induced elastic strain energy

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2022年第8期103卷 165-176页

作者： Xuefei Miao yong gong Fengqi Zhang Yurong You Luana Caron Fengjiao Qian Wenhui Guo Yujing Zhang Yuanyuan gong Feng Xu Niels van Dijk Ekkes Brück MIIT Key Laboratory of Advanced Metallic and Intermetallic Materials Technology School of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China Fundamental Aspects of Materials and Energy Department of Radiation Science and TechnologyDelft University of TechnologyMekelweg 15DelftJB 2629Netherlands Department of Physics Bielefeld UniversityBielefeld 33501Germany Helmholtz-Zentrum Berlin für Materialien und Energie Berlin 12489Germany College of Physics Nanjing University of Aeronautics and AstronauticsNanjing 210016China

Magnetocaloric materials undergoing reversible phase transitions are highly desirable for magnetic refrigeration applications.(Mn,Fe)_(2)(P,Si)alloys exhibit a giant magnetocaloric effect accompanied by a magnetoelastic transition,while the noticeable irreversibility causes drastic degradation of the magnetocaloric properties during consecutive cooling *** the present work,we performed a comprehensive study on the magnetoelastic transition of the(Mn,Fe)_(2)(P,Si)alloys by high-resolution transmission electron microscopy,in situ field-and temperature-dependent neutron powder diffraction as well as density functional theory calculations(DFT).We found a generalized relationship between the thermal hysteresis and the transition-induced elastic strain energy for the(Mn,Fe)_(2)(P,Si)*** thermal hysteresis was greatly reduced from 11 to 1 K by a mere 4 at.%substitution of Fe by Mo in the Mn_(1.15)Fe_(0.80)P_(0.45)Si_(0.55)*** reduction is found to be due to a strong reduction in the transition-induced elastic strain *** significantly enhanced reversibility of the magnetoelastic transition leads to a remarkable improvement of the reversible magnetocaloric properties,compared to the parent *** on the DFT calculations and the neutron diffraction experiments,we also elucidated the underlying mechanism of the tunable transition temperature for the(Mn,Fe)_(2)(P,Si)family,which can essentially be attributed to the strong competition between the covalent bonding and the ferromagnetic exchange *** present work provides not only a new strategy to improve the reversibility of a first-order magnetic transition but also essential insight into the electron-spin-lattice coupling in giant magnetocaloric materials.

关键词： Magnetocaloric effect (Mn Fe)2(P Si) Hysteresis Neutron diffraction

Development and characterization of interspecific hybrids between Oryza sativa and O. latifolia by in situ hybridization

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2008年第19期53卷 2973-2980页

作者： YI ChuanDeng TANG ShuZhu ZHOU yong LIANG GuoHua gong ZhiYun GU MingHong Jiangsu Province Key Laboraty of Crop Genetics and Physiology/Key Laboraty of Plant Functional Genomics of Ministry of Education Yangzhou University Yangzhou 225009 China

Oryza sativa and O. latifolia belong to the AA and CCDD genomes of Oryza, respectively. In this study, interspecific hybrids of these species were obtained using the embryo rescue technique. Hybrid panicle traits, such as long awns, small grain, exoteric large purple stigma, grain shattering and dispersed panicles, resemble that of the paternal parent, O. latifolia, whereas there is obvious heterosis in such respects as plant height, tillering ability and vegetative vigor. Chromosome pairing and the genomic components of the hybrid were subsequently investigated using genomic in situ hybridization (GISH) and fluorescent in situ hybridization (FISH) analysis. Based on the mitotic metaphase chromosome numbers of the root tips investigated, the hybrid is a triploid with 36 chromosomes. The genomic constitution of the hybrid is ACD. In the meiotic metaphase I of the hybrid pollen mother cell, poor chro- mosome pairing was identified and most of the chromosomes were univalent, which resulted in com- plete male sterility in the hybrid.

关键词：漂白亚麻纤维卷胚芽种间杂交技术

Synthesis and cytotoxic activity of novel curcumin analogues

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2008年第3期19卷 281-285页

作者： Qin Zhang Yao Fu Hao Wei Wang Tao gong yong Qin Zhi Rong Zhang Key Laboratory of Drug Targeting Drug Delivery Systems Ministry of Education West China School of Pharmacy Sichuan University Chengdu 610041 China

Five novel curcumin analogues bearing different substituents at 4-position of phenyl group were synthesized. Their structures were confirmed by NMR and HRMS spectrum. Their cytotoxic activities against six tumor cell lines were tested by the standard MTT assay in vitro. The results indicated that four analogues （1A-1C, 1E） with solubilizing moieties showed selective potent cytotoxicity against HepG2, HeLa and CT26 cell lines, and analogue 1A and 1C exhibited more potent cytotoxicity than curcumin against CT26 cell line. It was suggested that introduction of appropriate substituents to 4-position of phenyl group might be a potential option for structural modification of curcumin.

关键词： Curcumin analogues Synthesis Cytotoxic activity Anti-tumor activity

A novel treatment of refractory coronary embolism:thrombus aspiration catheter-assisted twisting wire technique

在线全文

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2020年第2期17卷 110-115页

作者： Yi-Lun ZOU Jian-Qiang LI yong-Tai gong Dang-Hui SUN Yue LI Department of Cardiology the First Affiliated Hospital of Harbin Medical University

Coronary embolism caused by the thrombus from guiding catheters is a rare and challenging complication,which may result in serious and fatal consequences due to the loss of blood flow of the coronary artery during percutaneous coronary intervention(PCI).Current strategies for the reduction of thrombus burden include pharmacological agents(typically glycoprotein IIb/IIIa platelet inhibitors),embolic protection devices(filters and distal balloon occlusion with aspiration),mechanical thrombectomy and manual or aspiration thrombectomy devices.[1]The above strategies are widely used as the first-line treatments,but have limitations for some refractory thrombus.A few techniques have been invented before to address this issue,[2–6]but they are not always effective or unavailable in some medical centers.

关键词： Complication Percutaneous coronary intervention Refractory thrombus embolism Thrombectomy

A Constraint Adaptive Multi-Tasking Differential Evolution Algorithm:Designed for Dispatch of Integrated Energy System in Coal Mine

在线全文

学校读者我要写书评

暂无评论

Tsinghua Science and Technology 2024年第2期29卷 368-385页

作者： Canyun Dai Xiaoyan Sun Hejuan Hu yong Zhang Dunwei gong School of Information and Control Engineering China University of Mining and TechnologyXuzhou 221116China School of Information Science and Technology Qingdao University of Science and TechnologyQingdao 266061China

The dispatch of integrated energy systems in coal mines(IES-CM)with mine-associated supplies is vital for efficient energy utilization and carbon emissions ***,IES-CM dispatch is highly challenging due to its feature as multi-objective and strong *** constrained multi-objective evolutionary algorithms often fall into locally feasible domains with poorly distributed Pareto front,which greatly deteriorates dispatch *** tackle this problem,we transform the traditional dispatch model of IES-CM into two tasks:the main task with all constraints and the helper task with constraint *** we propose a constraint adaptive multi-tasking differential evolution algorithm(CA-MTDE)to optimize these two tasks *** helper task with constraint adaptive is developed to obtain infeasible solutions near the feasible *** purpose of this infeasible solution is to transfer guiding knowledge to help the main task move away from local ***,a dynamic dual-learning strategy using DE/current-to-rand/1 and DE/current-to-best/1 is developed to maintain task diversity and ***,we comprehensively evaluate the performance of CA-MTDE by applying it to a coal mine in Shanxi Province,considering two IES-CM *** demonstrate the feasibility of CA-MTDE and its ability to generate a Pareto front with exceptional convergence,diversity,and distribution.

关键词： dispatch integrated energy system coal mine evolutionary multi-tasking constraint differential evolution

CoFe_2O_4-Graphene Nanocomposites Synthesized through An Ultrasonic Method with Enhanced Performances as Anode Materials for Li-ion Batteries

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2014年第4期6卷 307-315页

作者： Yinglin Xiao Xiaomin Li Jiantao Zai Kaixue Wang yong gong Bo Li Qianyan Han Xuefeng Qian School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University

Co Fe2O4-graphene nanosheets(Co Fe2O4-GNSs) were synthesized through an ultrasonic method, and their electrochemical performances as Li-ion battery electrode were improved by annealing processes. The nanocomposites obtained at 350 °C maintained a high specific capacity of 1,257 m Ah g-1even after 200 cycles at 0.1 A g-1. Furthermore,the obtained materials also have better rate capability, and it can be maintained to 696, 495, 308, and 254 m Ah g-1at 1, 2,5, and 10 A g-1, respectively. The enhancements realized in the reversible capacity and cyclic stability can be attributed to the good improvement in the electrical conductivity achieved by annealing at appropriate temperature, and the electrochemical nature of Co Fe2O4 and GNSs during discharge–charge processes.

关键词： Cobalt ferrite Graphene Anode materials Lithium ion battery