检索结果-南通市图书馆

Enhancement of MoTe2 near-infrared absorption with gold hollow nanorods for photodetection

Nano Research 2020年第6期13卷 1636-1643页

作者： Jiawen You Ye Yu Kai cai Dongming Zhou Haiming Zhu Renyan Wang Qingfu Zhang Hongwei Liu Yuting cai Dong Lu Jang-Kyo Kim Lin Gan Tianyou Zhai Zhengtang Luo Department of Chemical and Biological Engineering William Mong Institute of Nano Science and Technology and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionThe Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina Leibniz-Institut für Polymerforschung Dresden e.V. Hohe Straße 6Dresden01069Germany State Key Laboratory of Material Processing and Die and Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan430074China Department of Chemistry Zhejiang UniversityHangzhou310027China Shenzhen R&D Center of Huazhong University of Science and Technology Shenzhen518000China Guangzhou HKUST Fok Ying Tung Research Institute Guangzhou511458China Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina

Infrared(IR)light photodetection based on two dimensional(2D)materials of proper bandgap has attracted increasing ***,the weak IR absorption in 2D materials,due to their ultrathin attribute and indirect bandgap in multilayer structures,degrades their performance when used as IR *** this work,we utilize the fact that few-layer MoTe2 flake has a near-IR(NIR)bandgap and demonstrate a^60-fold enhancement of NIR response by introducing a gold hollow nanorods on the *** gold hollow nanorods have distinct absorption peak located also at the NIR regime,therefore induces strong resonance,benefitting NIR absorption in MoTe2,resulting in strong near-field *** the evidence from steady and transient state optical spectra,we confirm that the enhancement of NIR response originates only photon absorption,rather than electron transport at interfaces as observed in other heterostructures,therefore,precluding the requirement of high-quality interfaces for commercial applications.

关键词： NIR photodetection LSPR MoTe2 gold hollow nanorods

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

Patterns in a Two-Dimensional Annular Granular Layer

引用

Chinese Physics Letters 2013年第4期30卷 115-118页

作者： cai Hui CHEN Wei-Zhong MIAO Guo-Qing Institute of Acoustics and Key Laboratory of Modern Acoustics of Ministry of Education Nanjing UniversityNanjing 210093

Patterns such as periodic subharmonic waves and kink-pairs are observed experimentally in a two-dimensional vertically vibrated granular layer located in an annular channel which has a sawtooth-shaped *** the thickness of the granular layer and external excitation as control parameters,we find the transitions between different patterns in the *** dependence of the kink-pair's velocity on the external excitation is *** local velocity fields of the granular layer indicate that,in addition to horizontal transport in the layer,there is convection in the node area of a kink.

关键词： layer. excitation annular

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

Effects of nutrition spatial heterogeneity on root traits and carbon usage by roots of Cercis chinensis seedlings in split root rooms

引用

Forestry Studies in China 2008年第4期10卷 220-228页

作者： GAN cai-xia WU Chu School of Horticulture and Gardening Yangtze University Jingzhou 434025 P. R. China Institute of Vegetables Hubei Academy of Agricultural Sciences Wuhan 430093 P. R. China

In natural ecosystems, nutrition available for plants shows great spatial heterogeneity. Much is known about plant root responses to the spatial heterogeneity of nutrition, but little is known about carbon usage in roots in nutrition-deficient patches and its effect on root longevity. In this study, split-room boxes were used for culture of Cercis chinensis seedlings, and the small rooms were supplied with different nutrition levels. The number of the first-order roots in the rooms with nutrition supply was significantly higher than that in the rooms with deficient nutrition. Specific root length （SRL） of the first-order roots in the rooms with deficient nutrition reached its peak at day 64 after nutrition treatment. There was no significant SRL differences between the two order roots during the experiment. Biomass of the first-order roots in the rooms without nutrition supply was significantly less than that of the first-order roots in the rooms with nutrition supply from day 64 to 96. The total biomass of the lateral roots in the rooms without nutrition supply decreased from day 64 to 96. The activities of the enzymes in roots in the rooms without nutrition supply increased and the activities of alkaline invertases in roots in the two sides of split box did not change significantly. The activities of the enzymes in roots in the rooms without nutrition supply increased gradually. These results suggest that nutrition spatial heterogeneity induced the changes in root traits and plants actively controlled carbon usage in roots in nutrition-deficient patches by regulating the activities of invertases and sucrose synthases, resulting in the reduction in carbon usage in the roots in nutrition-deficient patches.

关键词： nutrition spatial heterogeneity root trait carbon usage Cercis chinensis

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

Effect of mass transfer and solution composition on the quantification of reaction kinetics by differential electrochemical mass spectrometry

引用

Journal of Energy Chemistry 2021年第5期30卷 412-419页

作者： Wei Chen Nestor Uwitonze Fan He Matthew MSartin Jun cai Yan-Xia Chen Hefei National Laboratory for Physical Sciences at Microscale Department of Chemical PhysicsUniversity of Science and Technology of ChinaHefei 230026AnhuiChina

Differential electrochemical mass spectrometry(DEMS)is one of the most powerful techniques for both the mechanistic and kinetic study of complicated electrocatalytic *** can provide information on the nature and yields of the products generated,their production rate,and the structure-activity relationship between the electrocatalysts and the target *** precise calibration of the mass signal is a prerequisite for the accurate evaluation of reaction *** this work,we use the oxidation reactions of CO and HCOOH to demonstrate how certain conditions,such as the flow rate and solution composition,affect the collection efficiency and ionization probability of the species to be *** parameters can affect the determination of the mass calibration constant and the accuracy of the subsequent quantitative DEMS *** show the relationship between the mass calibration constant and the flow rate,and provide strategies for eliminating this and the related problems.

关键词： Differential electrochemical mass spectrometry Quantitative analysis Calibration Flow rate Background correction

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

Endoscopic sphincterotomy associated cholangitis in patients receiving proximal biliary self-expanding metal stents

引用

Hepatobiliary & Pancreatic Diseases International 2012年第6期11卷 643-649页

作者： Hui Zhou, Lei Li, feng Zhu, Sheng-Zheng Luo, Xiao-Bo cai,Xin-Jian Wan Department of Gastroenterology, Shanghai First People’s Hospital, Shanghai Jiaotong University, Shanghai 200080, China Department of Gastroenterology Shanghai First People's Hospital Shanghai Jiaotong University Shanghai 200080 China

BACKGROUND: Endoscopic biliary stent placement during the procedure of endoscopic retrograde cholangiopancreatography (ERCP) is preferred to provide biliary drainage for unresectable malignant biliary obstruction. There is considerable controversy over the use of endoscopic sphincterotomy (ES) prior to stent placement. This study aimed to determine whether ES before intraductal self-expanding metal stent (SEMS) placement affects the clinical outcome and complications in patients with proximal malignant obstructive biliary diseases. METHODS: In a prospective randomized controlled trial, 82 patients with inoperable malignant biliary strictures were randomly assigned to biliary stenting groups with or without ES. Resolution of jaundice and the incidence of complications including acute cholangitis, pancreatitis and stent occlusion within 6 months were evaluated. RESULTS: SEMSs were successfully deployed in all patients, resulting in clinical and biochemical improvement of obstructive symptoms in both groups. The incidence of cholangitis was higher in the ES group than in the non-ES group (58.5% vs 31.7%, P=0.015). The interval between stent placement and the first acute cholangitis was much shorter in the ES group than in the non-ES group (P=0.024). The use of ES increased the incidence of cholangitis (P=0.004, risk ratio, 8.196). The rate of post-ERCP pancreatitis after stent placement was greater in the non-ES group than in the ES group (31.7% vs 9.8%, P=0.014). No significant differences were found in the rate of restenosis and the mortality rate between the two ***: ES prior to intraductal SEMS placement was associated with an increased incidence of acute cholangitis. ES should be carefully evaluated prior to its use in patients with proximal malignant obstructive biliary diseases.

关键词： sphincterotomy biliary obstructions endoscopic retrograde cholangiopancreatography cholangitis pancreatitis

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

Zoonotic giardiasis:an update

Zoonotic giardiasis:an update

引用

2021中国畜牧兽医学会兽医寄生虫学分会第二届青年科学家学术论坛

作者： Weilong cai Una Ryan Lihua Xiao Yaoyu feng

Giardia duodenalis is a common intestinal parasite in various hosts,with the disease giardiasis being a *** use of molecular typing tools has improved our understanding of the distribution and zoonotic potential of *** genotypes in different *** present review summarizes recent data on the distribution of *** genotypes in humans and animals in different *** dominance of *** assemblages A and B in humans and common occurrence of host-adapted assemblages in most domesticated animals suggests that zoonotic giardiasis is probably less common than believed and could be attributed mainly to contact with or contamination from just a few species of animals such as nonhuman primates,equines,rabbits,guinea pigs,chinchillas,and *** studies should be directed to advanced genetic characterization of isolates from well-designed epidemiological investigations,especially comparative analyses of isolates from humans and animals living in the same household or *** will likely lead to better understanding of zoonotic transmission of *** in different environmental and socioeconomic settings.

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

花岗岩残积土持力层人工挖孔桩承载力研究

引用

同济大学学报（自然科学版） 2006年第1期34卷 33-37页

作者：蔡来炳李永盛施峰同济大学地下建筑与工程系上海200092 福建省建筑科学研究院福建福州350025

论述了花岗岩残积土对人工挖孔桩承载力的影响;通过对现场试验结果的分析,研究了以花岗岩残积土为持力层的人工挖孔桩的承载性质及计算方法;结合92根桩的试验资料统计分析,讨论了地下水对人工挖孔桩承载力的影响.

关键词：花岗岩残积土人工挖孔桩地下水承载力桩侧阻力载荷试验

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

Application Potential of Probiotics in Acute Myocardial Infarction

引用

Cardiovascular Innovations and Applications 2022年第3期7卷 57-65页

作者： Jing-Jing cai Hui Jiang Department of Cardiology Xing’an League People’s HospitalNo.66 Hanshan West StreetUlan HotXing’an LeagueInner Mongolia 137400P.R.China

Myocardial infarction(MI)is associated with high rates of death and disability,and is the main cause of death due to cardiovascular disease and the most frequent cause of death in the developed *** studies have shown that,in addition to traditional risk factors,such as hypertension,diabetes,hyperlipidemia,obesity,smoking and the environment,the gut microbiota plays an important role in MI development and *** discovery of an enteric-cardioid axis provides a new route to examine the complex mechanism of MI and has become a research hotspot in recent *** have suggested that probiotics decrease ischemia/reperfusion injury and inflammation,regulate lipid metabolism and decrease the myocardial infarction *** this review,we discuss the relationship between probiotics and MI as well as potential underlying mechanisms,to provide new ideas for the prevention and treatment of MI.

关键词： probiotics myocardial infarction hypertension diabetes lipids cardiovascular disease

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

UBQLN1 mediates sorafenib resistance through regulating mitochondrial biogenesis and ROS homeostasis by targeting PGCip in hepatocellular carcinoma

引用

Signal Transduction and Targeted Therapy 2021年第6期6卷 1856-1868页

作者： Junjie Xu Lin Ji Yeling Ruan Zhe Wan Zhongjie Lin Shunjie Xia Liye Tao Junhao Zheng Liuxin cai Yifan Wang Xiao Liang Xiujun cai Key Laboratory of Laparoscopic Technology of Zhejiang Province Department of General SurgerySir Run-Run Shaw HospitalZhejiang University School of MedicineHangzhouChina Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and EquipmentHangzhouChina Zhejiang University Cancer Center HangzhouChina Liangzhu Laboratory Zhejiang University Medical CenterHangzhouChina

The treatment for hepatocellular carcinoma(HCC)is promising in recent years,but still facing critical *** first targeted therapy,sorafenib,prolonged the overall survival by ***,resistance often occurs,largely limits its *** was found to target the electron transport chain complexes,which results in the generation of reactive oxygen species(ROS).To maintain sorafenib resistance and further facilitate tumor progression,cancer cells develop strategies to overcome excessive ROS production and obtain resistance to oxidative stress-induced cell *** the present study,we investigated the roles of ROS in sorafenib resistance,and found suppressed ROS levels and reductive redox states in sorafenib-resistant HCC *** in sorafenib-resistant cells maintained greater functional and morphological integrity under the treatment of ***,cellular oxygen consumption rate and mitochondria DNA content analyses revealed fewer numbers of mitochondria in sorafenib-resistant *** investigation attributed this finding to decreased mitochondrial biogenesis,likely caused by the accelerated degradation of peroxisome proliferator-activated receptor y coactivator ip(PGC1P).Mechanistic dissection showed that upregulated UBQLN1 induced PGCip degradation in a ubiquitination-independent manner to attenuate mitochondrial biogenesis and ROS production in sorafenib-resistant cells under sorafenib ***,clinical investigations further indicated that the patients with higher UBQLN1 levels experienced worse recurrence-free *** conclusion,we propose a novel mechanism involving mitochondrial biogenesis and ROS homeostasis in sorafenib resistance,which may offer new therapeutic targets and strategies for HCC patients.

关键词： homeostasis resistance overcome

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

Exploring the impact of anti-shadowing effect on unintegrated gluon distributions in the MD-BFKL equation

引用

Chinese Physics C 2024年第9期48卷 126-132页

作者： Xiaopeng Wang Yanbing cai Xurong Chen Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Guizhou Key Laboratory in Physics and Related Areas Guizhou University of Finance and EconomicsGuiyang 550025China Southern Center for Nuclear-Science Theory(SCNT) Institute of Modern PhysicsChinese Academy of SciencesHuizhou 516000China

This paper presents a comprehensive analysis of the MD-BFKL equation,considering both shadowing and anti-shadowing effects in gluon recombination *** deriving analytical expressions for unintegrated gluon distributions through the solution of the MD-BFKL equation,with and without the incorporation of the antishadowing effect,we offer new insights into the influence of these effects on the behavior of unintegrated gluon *** results,when compared to those from the CT18NLO gluon distribution function,demonstrate that the anti-shadowing effect has a notably stronger impact on the characteristics of unintegrated gluon distributions,particularly in regions of high rapidity and *** work significantly contributes to the understanding of gluon recombination mechanisms and their implications in high energy physics.

关键词： MD-BFKL equation analytic solution anti-shadowing effect

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：