检索结果-南通市图书馆

Single atom and defect engineering of CuO for efficient electrochemical reduction of CO_(2) to C_(2)H_(4)

SmartMat 2022年第1期3卷 194-205页

作者： senlin chu Changwoo Kang Woonghyeon Park Yu Han Song Hong Leiduan Hao Hao Zhang Tsz Woon Benedict Lo Alex W.Robertson Yousung Jung Buxing Han Zhenyu Sun State Key Laboratory of Organic‐Inorganic Composites Beijing University of Chemical TechnologyBeijingChina Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology(KAIST)DaejeonRepublic of Korea Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic UniversityHong KongChina Department of Physics University of WarwickCoventryUK Institute of Chemistry Chinese Academy of SciencesBeijingChina

Electrochemical CO_(2) transformation to high‐value ethylene(C_(2)H_(4))at high currents and efficiencies is desired and yet remains a grand challenge.We show for the first time that coupling single Sb atoms and oxygen vacancies of CuO enable synergistic electrocatalytic reduction of CO_(2) to C_(2)H_(4) at low overpotentials.Highly dispersed Sb atoms occupying metal substitutional sites of CuO are synthesized under mild conditions.The overall CO_(2) reduction faradaic efficiency(FE)reaches 89.3±1.1%with an FE toward C_(2)H_(4) exceeding 58.4%at a high‐current density of 500 mA/cm^(2).Addition of the p‐block metal is found to induce transformation of CuO from flakes to nanoribbons rich in nanoholes and oxygen vacancies,greatly enhancing CO_(2) adsorption and activation while suppressing hydrogen evolution.Further density functional theory calculations with in situ X‐ray diffraction reveal that combining Sb sites and oxygen vacancies prominently lessen the dimerization energy of adsorbed CO intermediate,thus boosting the conversion of CO_(2) to produce C_(2)H_(4).This study provides a new perspective for promoting selective C-C coupling for electrochemical CO_(2) reduction.

关键词： CO_(2)reduction copper oxide electrocatalysis ethylene single sites

来源：

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

Expression of MMP-2 in residual VX2 liver tumor after transcatheter arterial embolization combined with portal venous embolization in an animal model

引用

Journal of Interventional Medicine 2020年第4期3卷 167-173页

作者： Ning Wei Ziqiang Wu Dong Lu Jingkun Xiao chunze Zhou senlin chu Weifu Lv Department of Radiology The First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui230001China Department of Medical Imaging Center The First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui230036China

Objective:This study aimed to analyze the effects of transcatheter arterial embolization(TAE)combined with portal venous embolization(PVE)on the expression of MMP-2 in residual VX2 liver tumor tissues,liver function and non-embolic lobe regeneration.Methods:A total of 72 rabbits were randomly divided into Sham,TAE,PVE and TAE+PVE groups(n=18/group).The tissue samples from each group were taken at 6 h,3 days and 7 days after interventional operation,respectively.MMP-2 expression was detected by immunohistochemistry,Real-time PCR,and Western-blotting.The main indicators(such as AST,ATL,and TBIL)of liver function and the volume of non-embolized hepatic lobes were measured in each group after operation.One-way ANOVA and Kruskal-wallis method were used for statistical analysis.Results:The expression of MMP-2 mRNA and protein remained the highest in the Sham group,and the expression of MMP-2 mRNA and protein in TAE,PVE and TAE+PVE groups were successively increased,and the expression of MMP-2 in TAE+PVE group was always significantly higher than TAE group.The AST and ALT levels in each group on day 7 after operation showed a significant declination,and all groups have recovered to the preoperative baseline level and TBIL has a slight fluctuation in each group after operation with no statistical difference.On day 7 after operation,the increasing volume of non-embolized liver lobes in TAE+PVE group showed a more significant effect than those in PVE group,but there was no statistical significance(37.62±1.54 ml VS 36.18±1.15 ml,P=0.881),and its volume was significantly higher than those in the sham group(27.03±1.11 ml).Conclusion:TAE+PVE is considered to be an efficient and safe approach for treating rabbit VX2 liver transplantation tumor,but the expression of MMP-2 increased fastest after TAE+PVE,which might promote tumor cell invasion and metastasis.

关键词： Transcatheter arterial embolization Portal vein embolization Matrix metalloproteinase-2 VX2 tumor Liver regeneration

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

孤立性肺结节两种胸腔镜术前定位方法的对比分析

引用

医学影像学杂志 2024年第5期34卷 70-74页

作者：柴杰鲁东吕维富魏宁储森林徐蓓蓓汪丽君余华峰中国科学技术大学附属第一医院介入放射科安徽合肥230001

目的探讨CT引导下微弹簧圈定位与医用胶结合亚甲蓝(MGMB)定位在孤立性肺结节(SPN)电视胸腔镜手术(VATS)前定位中的临床价值,并分析定位后发生并发症的危险因素。方法选取我院收治的292例SPN患者,分为微弹簧圈组129例,MGMB组163例,比... 详细信息

目的探讨CT引导下微弹簧圈定位与医用胶结合亚甲蓝(MGMB)定位在孤立性肺结节(SPN)电视胸腔镜手术(VATS)前定位中的临床价值,并分析定位后发生并发症的危险因素。方法选取我院收治的292例SPN患者,分为微弹簧圈组129例,MGMB组163例,比较两种定位技术的安全性和成功率,以及潜在临床价值。结果所有患者均于VATS术前36 h内完成定位,相比于微弹簧圈组,MGMB组的定位时间更短(7.42±2.58 vs 14.80±3.60)min,差异有统计学意义(P<0.001),住院时间更短(5.67±2.16 vs 10.26±3.69)天,差异有统计学意义(P<0.001)。两组术前定位成功率分别为96.9%(125/129)和100%(163/163)。定位过程中无死亡或严重并发症发生,两组并发症发生率差异无统计学意义(P=0.902)。Logistic回归分析显示,定位时间是总并发症发生的危险因素(OR=1.119,95%可信区间,1.002~1.249,P=0.045)。结论两种技术都可以在VATS之前安全有效地定位SPN,但MGMB组的定位时间及住院时间更短,实用性及潜在的临床价值更高,值得临床推广。

关键词：孤立性肺结节定位电视胸腔镜手术介入性放射学

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

TDP-43 is a key molecule accelerating development of Alzheimer’s disease following traumatic brain injury

引用

Neural Regeneration Research 2024年第5期19卷 955-956页

作者： chu Chen Department of Cellular and Integrative Physiology Long School of MedicineUniversity of Texas Health Science Center at San AntonioSan AntonioTXUSA

Currently,more than 55 million people have dementia worldwide and Alzheimer’s disease(AD)is one of the most common causes of dementia in aging.However,no effective therapies are currently available for the prevention and treatment of AD.This is largely due to our limited understanding of the mechanisms underlying the neuropathogenesis of AD.It has widely been recognized that AD is heterogeneous and that multi-factors are contributing to the pathogenesis of AD.Accumulated evidence suggests that traumatic brain injury(TBI)is an important risk factor for the development of AD and dementia later in life(Guo et al.,2000;Johnson et al.,2010).However,the precise mechanism by which TBI contributes to developing AD has yet to be elucidated.

关键词： Alzheimer traumatic

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Motor cortical circuit adaptations in parkinsonism

引用

Neural Regeneration Research 2024年第10期19卷 2107-2108页

作者： Hong-Yuan chu Department of Neurodegenerative Science Van Andel Research InstituteGrand RapidsMIUSA Aligning Science Across Parkinson’s(ASAP)Collaborative Research Network

Parkinson's disease is a chronic and progressive neurodegenerative disorder characterized by the loss of dopaminergic neurons in the substantia nigra pars compacta,which leads to the featured motor impairment of parki... 详细信息

关键词： parkin impairment rigidity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Aberrant protamination in sperm correlates to anomalous nuclear and cytoplasmic architectures in infertile males with sperm dysmorphology

引用

Asian Journal of Andrology 2024年第2期26卷 183-188页

作者： Huan Jiang chu-Jie Huang Department of Reproductive Endocrinology Longgang District Maternity&Child Healthcare Hospital of Shenzhen City(Longgang Maternity and Child Institute of Shantou University Medical College)Shenzhen 518172China Institute of Reproductive Immunology College of Life Science and TechnologyJinan UniversityGuangzhou 510632China

Aberrant sperm protamination is linked to sperm dysmorphology and nuclear chromatin condensation.Yet,its effects on sperm cytoplasmic maturation remain largely unexplored.The relationships of protamines,sperm morphology,DNA damage,and cytoplasmic remodeling were illustrated in this study to provide fresh perspectives on the mechanisms of male infertility.A total of 205 infertile males were allocated into 5 groups according to the percentage of spermatozoa exhibiting abnormal morphology within their samples.Sperm concentration,motility,abnormal sperm morphology,cytoplasmic droplets(CDs),and excess residual cytoplasm(ERC)were analyzed according to the World Health Organization manual(2010).Sperm nuclear vacuoles(NVs)were determined by propidium iodide(PI)staining.Sperm protamine expressions(P1 and P2)were detected by western blot.DNA damage was measured by acridine orange test(AOT)to calculate the proportion of sperm with single-strand DNA breaks(SSBs).Our data showed that sperm concentration and motility in infertile males significantly decreased with the severity of abnormal sperm morphology(both P<0.01).P1 level,P1/P2 ratio,and SSB rate increased with the severity of sperm dysmorphology,whilst the P2 level decreased(all P

关键词： abnormal sperm morphology excess residual cytoplasm male infertility protamines sperm DNA damage sperm nuclear vacuoles

来源：

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

人工气胸辅助下肺结节定位技术

引用

中华胸心血管外科杂志 2023年第5期39卷 309-310页

作者：江贤亮储森林魏宁柯立中国科学技术大学附属第一医院安徽省立医院胸外科合肥230001 中国科学技术大学附属第一医院安徽省立医院介入科合肥230001

肺小结节是肺部常见疾病,也是胸外科的主要疾病之一。肺小结节术中查找困难,多数需术前定位。但是部分肺结节位置隐蔽,因脊柱或肩胛骨遮挡,找不到合适的进针路径,无法直接定位。本文介绍人工气胸辅助肺结节定位法,以解决该难题。

关键词：位置隐蔽肺小结节胸外科肺结节人工气胸定位法术前定位肩胛骨

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A Fully-Integrated Memristor Chip for Edge Learning

引用

Nano-Micro Letters 2024年第9期16卷 123-127页

作者： Yanhong Zhang Liang chu Wenjun Li School of Elecronics and Information Hangzhou Dianzi UniversityHangzhou 310018People’s Republic of China

It is still challenging to fully integrate computing in memory chip as edge learning devices.In recent work published on Science,a fully-integrated chip based on neuromorphic memristors was developed for edge learning as artificial neural networks with functionality of synapses,dendrites,and somas.A crossbar-array memristor chip facilitated edge learning including hardware realization,learning algorithm,and cycle-parallel sign-and threshold-based learning(STELLAR)scheme.The motion control and demonstration platforms were executed to improve the edge learning ability for adapting to new scenarios.

关键词： Computing in memory Edge learning Fully-integrated chip

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Demixing microwave signals using system-on-chip photonic processor

引用

Light(Science & Applications) 2024年第3期13卷 399-401页

作者： Sheng Gao chu Wu Xing Lin Department of Electronic Engineering Tsinghua University100084 BeijingChina Beijing National Research Center for Information Science and Technology Tsinghua University100084 BeijingChina

The integrated photonic processor,co-packaged with electronic peripherals,is proposed for blind source separation of microwave signals,which separates signal-of-interest from dynamic interference with real-time adapta... 详细信息

关键词： processor microwave mixing

来源：

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

Strigolactone regulates nitrogen-phosphorus balance in rice

引用

Science China(Life Sciences) 2024年第2期67卷 428-430页

作者： Huwei Sun Hanyun Wang Chengcai chu Guangdong Provincial Key Laboratory of Plant Molecular Breeding College of AgricultureSouth China Agricultural UniversityGuangzhou 510642China Key Laboratory for Enhancing Resource Use Efficiency of Crops in South China Ministry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou 510642China Guangdong Laboratory for Lingnan Modern Agriculture Guangzhou 510642

Phosphorus(P) is one of the essential elements for growth and development of crops.Modern agriculture depends heavily on the application of large amounts of fertilizers,including P fertilizers.Excessive application of P fertilizers causes severe environmental pollution.Additionally,phosphate(Pi) mining is a non-renewable resource(Raghothama,1999).

关键词： pollution phosphorus fertilizers

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：