检索结果-南通市图书馆

Transcatheter aortic valve implantation in a patient with anomalous right coronary artery originating from the left aortic sinus with interarterial course

在线全文

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2023年第8期20卷 612-614页

作者： Lu-Chen WANG yan-xiang liu Xiao-Gang SUN Wei WANG Department of Cardiovascular Surgery Fuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

Recently,the utilization of transcatheter aortic valve implantation(TAVI)has gained increasing prevalence due to its expanding range of applications in managing symptomatic severe aortic stenosis(AS).Coronary obstruction,a life-threatening complication,has been reported to occur during and after TAVI at an incidence rate of 0.5%-1%.^([1])In addition to shallow sinus of Valsalva(less than 30 mm),low coronary take-off(below 12 mm from annulus plane),and calcification of native valve leaflets over the coronary ostium,anomalous origins of coronary arteries and compression from expanded transcatheter heart valve have been shown to cause TAVI-associated coronary occlusion.

关键词： coronary aortic implantation

Dripping and evolution behavior of primary slag bearing TiO2 through the coke packed bed in a blast-furnace hearth

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2017年第2期24卷 130-138页

作者： yan-xiang liu Jian-liang Zhang Zhi-yu Wang Ke-xin Jiao Guo-hua Zhang Kuo-chih Chou State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Beijing 100083 China School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 China Baogang Zhanjiang Iron and Steel Co. Ltd. Zhanjiang 524000 China

To investigate the flow of primary slag bearing TiO2 in the cohesive zone of blast furnaces, experiments were carded out based on the laboratory-scale packed bed systems. It is concluded that the initial temperature of slag dripping increases with decreasing FeO content and increasing TiO2 content. The slag holdup decreases when the FeO content is in the range of 5wt%-10wt%, whereas it increases when the FeO content exceeds 10wt% . Meanwhile, the slag holdup decreases when the TiO2 content increases from 5wt% to 10wt% but increases when the TiO2 content exceeds 10wt%. Moreover, slag/coke interface analysis shows that the reaction between FeO and TiO2 occurs be- tween the slag and the coke. The slag/coke interface is divided into three layers： slag layer, iron-rich layer, and coke layer. TiO2 in the slag is reduced by carbon, and the generated Ti diffuses into iron.

关键词： blast furnace slag titanium dioxide packed beds dripping

Mass Spectrometry Imaging-Based Single-Cell Lipidomics Profiles Metabolic Signatures of Heart Failure

在线全文

学校读者我要写书评

暂无评论

Research 2023年第3期6卷 309-318页

作者： Jie Ren Hao-Wen Li Liang Chen Min Zhang yan-xiang liu Bo-Wen Zhang Rui Xu yan-yan Miao Xue-Mei Xu Xin Hua Xiao-Gang Sun Ru-Jia Yu Yi-Tao Long Sheng-Shou Hu State Key Laboratory of Cardiovascular Disease Fuwai HospitalNational Center for Cardiovascular DiseaseChinese Academy of Medicine Science(CAMS)and Perking Union Medical College(PUMC)Beijing100037P.R.China Institute of Molecular Medicine Shanghai Key Laboratory for Nucleic Acid Chemistry and NanomedicineState Key Laboratory of Oncogenes and Related GenesRenji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai200127P.R.China School of Chemistry and Molecular Engineering East China University of Science and TechnologyShanghai200237P.R.China Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device School of Chemistry and Chemical EngineeringSoutheast UniversityNanjing211189P.R.China State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023P.R.China

Heart failure(HF),leading as one of the main causes of mortality,has become a serious public health issue with high prevalence around the *** cardiomyocyte(CM)metabolomics promises to revolutionize the understanding of HF pathogenesis since the metabolic remodeling in the human hearts plays a vital role in the disease ***,current metabolic analysis is often limited by the dynamic features of metabolites and the critical needs for high-quality isolated ***,high-quality CMs were directly isolated from transgenic HF mice biopsies and further employed in the cellular metabolic *** lipids landscape in individual CMs was profiled with a delayed extraction mode in time-of-flight secondary ion mass *** metabolic signatures were identified to distinguish HF CMs from the control subjects,presenting as possible single-cell *** spatial distributions of these signatures were imaged in single cells,and those were further found to be strongly associated with lipoprotein metabolism,transmembrane transport,and signal *** together,we systematically studied the lipid metabolism of single CMs with a mass spectrometry imaging method,which directly benefited the identification of HF-associated signatures and a deeper understanding of HF-related metabolic pathways.

关键词： signature metabolism Profiles

Older liver grafts from donation after circulatory death are associated with impaired survival and higher incidence of biliary non-anastomotic structure

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

Hepatobiliary & Pancreatic Diseases International 2023年第6期22卷 577-583页

作者： Tian Shen Shan-Hua Zheng Jun Chen Zhi-Sheng Zhou Meng-Fan yang xiang-yan liu Jun-Li Chen Shu-Sen Zheng Xiao Xu Department of Hepatobiliary and Pancreatic Surgery Shulan(Hangzhou)HospitalHangzhou 310022China Division of Hepatobiliary Pancreatic Surgery The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province Department of Hepatobiliary and Pancreatic SurgeryAffiliated Hangzhou First People’s HospitalZhejiang University School of MedicineHangzhou 310006China China Liver Transplant Registry Hangzhou 310003China NHC Key Laboratory of Combined Multi-organ Transplantation Hangzhou 310003China Institute of Organ Transplantation Zhejiang UniversityHangzhou 310003China

Background:Grafts from older donors after circulatory death were associated with inferior outcome in liver transplants in the *** it has seemed to remain controversial in the last decade,as a result of modified clinical protocols,selected recipients,and advanced technology of organ perfusion and *** present study aimed to examine the impact of older donor age on complications and survival of liver transplant using grafts from donation after circulatory death(DCD).Methods:A total of 944 patients who received DCD liver transplantation from 2015 to 2020 were included and divided into two groups:using graft from older donor(aged≥65 years,n=87)and younger donor(age<65 years,n=857).Propensity score matching(PSM)was applied to eliminate selection ***:A progressively increased proportion of liver transplants with grafts from older donors was observed from 1.68%to 15.44%during the study *** well-balanced older donor(n=79)and younger donor(n=79)were 1:1 *** were significantly more episodes of biliary nonanastomotic stricture(NAS)in the older donor group than the younger donor group[15/79(19.0%)vs.6/79(7.6%);P=0.017].The difference did not reach statistical significance regarding early allograft dysfunction(EAD)and primary non-function(PNF).Older livers had a trend toward inferior 1-,2-,3-year graft and overall survival compared with younger livers,but these differences were not statistically significant(63.1%,57.6%,57.6%vs.76.9%,70.2%,67.7%,P=0.112;64.4%,58.6%,58.6%vs.76.9%,72.2%,72.2%,P=0.064).The only risk factor for poor survival was ABO incompatible transplant(P=0.008)in the older donor *** the subgroup of ABO incompatible cases,it demonstrated a significant difference in the rate of NAS between the older donor group and the younger donor group[6/8(75.0%)vs.3/14(21.4%);P=0.014].Conclusions:Transplants with grafts from older donors(aged≥65 years)after circulatory death are more frequently associated with inferior outcome com

关键词： Older donor Liver transplantation Survival Biliary stricture Donation after circulatory death

Two-state energy model and experimental study of coal adsorb methane

在线全文

学校读者我要写书评

暂无评论

Journal of Coal Science & Engineering(China) 2013年第4期19卷 488-492页

作者： Zeng-Chao FENG Dong ZHAO Zhi-xiang liu yan-Qi WANG Hong-Qiang GOU Mining Technology Institute Taiyuan University of Technology Taiyuan 030024 China

There are two states of methane existing in coal, free methane and adsorptive methane. The two states of methane exchanged with each other which need the energy exchange with outside. It is released heat when methane adsorption on coal, instead of absorbed heat. According to the gas molecules Boltzmann energy distribution, is obtained the equilibrium equations of the two states of methane in coal, as well as the heat of adsorption equation when exchanged into each other. At the same time, high temperature experiments of methane adsorption on coal have been certificated to the theoretical model. At last the experimental results presented that： the two-state energy model could be accurately described the distribution of the two states of methane in the coal; the adsorption heat is related to the initial equilibrium state of methane adsorption; the adsorption heats are different with different coal ranks.

关键词： two-state energy model adsorption heat chemical potential experimental study

Overexpression of STMN1 gene is an independent prognostic factor for survival in distal esophageal adenocarcinoma after surgery

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

Overexpression of STMN1 gene is an independent prognostic fa...

Removal of Antibiotic Resistance of Live Vaccine Strain Escherichia coli MM-3 and Evaluation of the Immunogenicity of the New Strain

第八届中国肿瘤学术大会暨第十三届海峡两岸肿瘤学术会议

作者： Akhtar Javed Zhou Wang Gang Chen xiang yan liu Department of Thoracic Surgery Provincial Hospital Affiliated to Shandong University

＜正＞Objective Distal esophageal adenocarcinoma（EAC）is a highly aggressive neoplasm with poor long-term *** advances in diagnosis and therapy,the outcome still remains *** molecular biomarkers are currently used in...

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Acta Biochimica et Biophysica Sinica 2006年第12期38卷 844-856页

作者： Sheng-Ling YUAN Peng WANG Hao-Xia TAO xiang-Xin liu yan-Chun WANG De-Wen ZHAN Chun-Jie liu Zhao-Shan ZHANG* Beijing Institute of Biotechnology,Beijing 100071,China BeijingInstituteofBiotechnology Beijing100071China

MM-3 was a live vaccine strain candidate for protecting neonatal piglets from *** in the 1980s,a high degree of protection from colibacillosis was afforded to piglets in a challengestudy and field *** MM-3 had a drawback of carrying the antibiotic resistance gene (chloramphenicolacetyltransferase gene,cat).The introduction of a host-plasmid balanced lethal system into the vaccine wasa good idea to solve the *** λ-Red recombination system was adopted in this study to realize thereplacement of cat by aspartate-semialdehyde dehydrogenase gene (asd) in the plasmid *** newplasmid named pMMASD was introduced into an Escherichia coli strain χ6097 and Salmonella typhimuriumχ4072 where the asd gene had been knocked out in their *** in an Erlenmeyer flask,expression levels of two antigens K88ac fimbriae and heat-labile enterotoxin B subunit (LTB) in cell lysatewere similar among MM-3,χ4072(pMMASD) and χ6097(pMMASD).However,χ4072(pMMASD) possessedthe more effective secretion mechanism to transport LTB enterotoxin into culture *** relatively higherstability of pMMASD in Salmonella typhimurium χ4072 than that of pMM085 in MM-3 was determined bothin vitro in the absence of selective pressure,and in vivo following oral *** immunization ofBALB/c mice with χ4072(pMMASD) or χ6097(pMMASD) was sufficient to elicit IgA responses in mucosaltissues as well as systemic IgG antibody responses to the K88 fimbriae,while MM-3 failed to elicit specificantibody responses to K88 fimbriae in mucosal *** three live strains,only χ4072(pMMASD)could develop strong humoral responses against LTB *** results suggest that χ4072(pMMASD)is expected to be a promising live vaccine strain.

关键词： λ-Red recombination system host-plasmid balanced lethal system K88ac fimbriae LTB enterotoxin ETEC live vaccine strain Salmonella

采前、采后外施水杨酸对葡萄成熟过程中和采后贮藏品质的影响

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

北方园艺 2016年第22期 35-40页

作者：项雯慧刘艳内蒙古农业大学农学院内蒙古呼和浩特010019

在自然条件下,以"巨峰"葡萄为试材,在葡萄果实转色期、成熟采收后,对葡萄果实进行外源喷施处理,分别设置0.1、1.0、10mmol·L^(-1)的水杨酸3个处理,以清水为对照,研究了不同处理对葡萄成熟过程中、采后葡萄贮藏期品质的影响。结果表明:... 详细信息

在自然条件下,以"巨峰"葡萄为试材,在葡萄果实转色期、成熟采收后,对葡萄果实进行外源喷施处理,分别设置0.1、1.0、10mmol·L^(-1)的水杨酸3个处理,以清水为对照,研究了不同处理对葡萄成熟过程中、采后葡萄贮藏期品质的影响。结果表明:无论任何时期的水杨酸处理都可明显抑制葡萄的腐烂,减缓果实电解质渗透率的提高,维持较高的可溶性固形物含量,保持良好的品质,延迟成熟与衰老。不同浓度水杨酸处理效果存在显著差异,综合分析认为,采前水杨酸处理、采后水杨酸处理和采后贮藏期水杨酸处理时均以1.0mmol·L^(-1)水杨酸处理浓度为最适宜。

关键词：水杨酸葡萄贮藏品质

在线全文

学校读者我要写书评

暂无评论

GPU并行加速的边折叠简化算法

计算机工程与设计 2016年第11期37卷 3051-3057页

作者：范豪刘峻孙宇陆向艳刘艳广西大学计算机与电子信息学院广西南宁530004 广西信息科学实验中心广西桂林541004 广西大学广西多媒体通信与网络技术重点实验室培育基地广西南宁530004 国家气象中心北京100081

针对目前串行的网格简化算法速度过慢,忽略模型细节特征的问题,提出一种基于GPU的边折叠网格简化算法。将三角网格模型划分为一系列强独立区域,采用二次误差测度计算边折叠代价,将独立区域内的所有强独立边中的最小折叠代价作为强独立... 详细信息

针对目前串行的网格简化算法速度过慢,忽略模型细节特征的问题,提出一种基于GPU的边折叠网格简化算法。将三角网格模型划分为一系列强独立区域,采用二次误差测度计算边折叠代价,将独立区域内的所有强独立边中的最小折叠代价作为强独立区域排序值,取各个强独立区域中折叠代价最小的边并行地进行折叠操作。实验结果表明,该算法具有较快的简化速率,较好的细节特征保持能力,简化模型具有较好的拓扑连接关系和较小的几何误差。

关键词：网格简化边折叠强独立区域二次误差测度图形处理单元