检索结果-南通市图书馆

Boosting pH-Universal Hydrogen Evolution of Molybdenum Disulfide Particles by Interfacial Engineering

Chinese Journal of Chemistry 2021年第2期39卷 288-294页

作者： Liling Liao lun Yang Gang zhao Haiqing Zhou Fengming Cai Yi Li Xiuzhang Wang Fang Yu Synergetic Innovation Center for Quantum Effects and Applications Key Laboratory for Matter Microstructure and Function of Hunan ProvinceKey Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of EducationSchool of Physics and ElectronicsHunan Normal UniversityChangshaHunan410081 China Institute for Advanced Materials Hubei Normal UniversityHuangshiHubei435002 China Nanotechnology&Application Center Ningbo Fengcheng Advanced Energy Materials Research InstituteNingboZhejiang315500 China

The design of high-efficiency non-noble and earth-abundant electrocatalysts for hydrogen evolution reaction(HER)is highly paramount for water splitting and renewable energy *** disulfide(MoS_(2))with abundant edge sites can be utilized as a promising alternative,but its catalytic activity is greatly related to the pH values,especially in an alkaline environment due to the extremely high energy barriers for water adsorption and dissociation *** we report an exceptionally efficient and stable electrocatalyst to improve the sluggish HER process of layered MoS_(2)particles in different pH electrolytes,especially in *** electrocatalyst is constructed by in situ growing selenium-doped MoS_(2)(Se-MoS_(2))nanoparticles on three-dimensional cobalt nickel diselenide(mCo_(0.2)Ni_(0.8)Se_(2))nanostructured *** to the large number of active edge sites of Se-MoS_(2)particles exposed at the surface,robust electrical conductivity and large surface area of mCo_(0.2)Ni_(0.8)Se_(2)support,and strong interfacial interactions between Se-MoS_(2)and mCo_(0.2)Ni_(0.8)Se_(2),this hybrid catalyst shows very outstanding catalytic HER properties featured by low overpotentials of 30 and 122 mV at 10 and 100 mA/cm^(2)with good operational stability in base,respectively,which outperforms most of inexpensive catalysts consisting of layered MoS_(2),transition metal selenides and sulfides,and it performs as well as noble Pt ***,this electrocatalyst is also very active in neutral and acidic electrolytes,requiring low overpotentials of 93 and 94 mV at 10 mA/cm^(2),respectively,demonstrating its superb pH universality as a HER electrocatalyst with excellent catalytic *** study provides a straightforward strategy to construct an efficient non-noble electrocatalyst for driving the HER kinetics in different electrolytes.

关键词： Hydrogen evolution reaction Molybdenum disulfide pH-universal Water splitting Heterogeneous catalysis

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

Co-expression of sCD40LIg and CTLA4Ig mediated by adenovirus prolonged mouse skin allograft survival

引用

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2006年第6期7卷 436-444页

作者： LI zhao-lun TIAN Pu-xun XUE Wu-jun WU Jun Department of Renal Transplantation the First Affiliated Hospital School of Medicine Xi＇an Jiaotong University Xi＇an 710061 China Institute of Burn Research Southwest Hospital the Third Military Medical University Chongqing 400038 China

Objective： To investigate the role of simultaneous blockade of CD40/CD40L and B7/CD28 pathways in the immune tolerance via co-expression of sCD40LIg and CTLA4Ig mediated by replication-defective adenovirus. Methods： Ad-sCD40LIg- IRES2-CTLA4Ig, replication-defective adenovirus co-expressing sCD40LIg and CTLA4Ig, was constructed and identified. The co-expression of sCD40LIg and CTLA4Ig was evaluated with confocal laser scanning microscope and Western blotting. Skin transplantations of C57BL/6 to BALB/c mice were performed. PBS, Ad-Shuttle-CMV and Ad-sCD40LIg-IRES2-CTLA4Ig were administered. Skin graft survival was monitored and the mRNA expression of both genes was evaluated in the skin allografts. Results： Ad-sCD40LIg-IRESE-CTLA4Ig was constructed successfully and identified. The co-expression of sCD40LIg and CTLA4Ig was identified with confocal laser scanning microscopy and Western blotting. Compared to the skin graft mean survival time （MST） of non-treated group （（5.75±0.71） d） or Ad-Shuttle-CMV-treated group （（5.50±0.53） d）, the skin graft MST was dramatically prolonged in the Ad-sCD40LIg-IRESE-CTLA4Ig-treated group （（ 16.38± 1.19） d, P〈0.001）. The mRNA expression of both genes was detected. Conclusion： Ad-sCD40LIg-IRES2-CTLA4Ig, a replication-defective adenovirus carrying genes encoding sCD40LIg and CTLA4Ig, was constructed. Simultaneous blockade of CD40/CD40L and B7/CD28 costimulatory pathway mediated by replication-defective adenovirus significantly prolonged skin allografi survival in mice.

关键词： Immune tolerance CTLA4Ig sCD40LIg Replication-defective recombinant adenovirus Skin graft

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

FORCED-AIR WARMING AND FLUID WARMING MINIMIZE CORE HYPOTHERMIA DURING ABDOMINAL SURGERY

引用

Chinese Medical Sciences Journal 2005年第4期20卷 261-264,页

作者： Jing zhao Ai-lun Luo Li Xu Yu-guang Huang Department of Anesthesiology Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730

Objective To evaluate the effect of intraoperative combined forced-air warming and fluid warming system on patient＇s core temperature, blood loss, transfusion demand, extubation time, and incidence of postoperative shivering. Mothods Forty patients with American Society of Anesthesiologists physical status I and II, aged 18-70 years, scheduled for elective abdominal surgery were randomly assigned to receive intraoperative warming from a forced-air blanket and fluid warming system or conventional cotton blanket, 20 in each group. The core temperature was recorded every 20 minutes during the operation, as well as the blood loss, blood transfusion, extubation time, and incidence of postoperative shivering. Results The core temperature at the end of the surgery in the warming group was significantly different from that in the control group （36.4±0.4℃ vs. 35.3±0.5℃, P〈0.001）. Application of intraoperative warming significantly shortened the time between the end of the surgery and extubation （P〈0.01）. Postoperative shivering occurred in 30% of the patients in the control group compared to no patient in the warming group （P 〈0.01）. Conclusion Active warming with air-forced blanket and fluid warming system provides sufficient heat to prevent hypothermia during abdominal surgery.

关键词： forced-air warming fluid warming core temperature

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

Preparation and Photoelectric Properties of Patterned Ag Nanoparticles on FTO/Glass Substrate by Laser Etching and Driving Layer Strategy

引用

Acta Metallurgica Sinica(English Letters) 2021年第7期34卷 973-985页

作者： Li-Jing Huang Gao-Ming Zhang Yao Zhang Bao-Jia Li Nai-Fei Ren Lei zhao Yi-lun Wang School of Mechanical Engineering Jiangsu UniversityZhenjiang 212013China School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013China Institute of Micro-Nano Optoelectronic and Terahertz Technology Jiangsu UniversityZhenjiang 212013China Jiangsu Provincial Key Laboratory of Center for Photon Manufacturing Science and Technology Jiangsu UniversityZhenjiang 212013China

An effective method based on laser etching and driving layer strategy was proposed to prepare patterned Ag nanoparticles(Ag NPs)on fluorine-doped tin oxide(FTO)/glass substrate and thus to enhance the photoelectric *** method successively included depositing an aluminum-doped zinc oxide(AZO)driving layer,laser etching,depositing an Ag layer,furnace annealing and laser *** AZO and Ag layer thicknesses were adopted,and the surface morphology,crystal structure and photoelectric properties were *** Ag NPs/FTO/glass sample without an AZO driving layer was prepared for *** was found that furnace annealing of the Ag layer combined with the AZO driving layer,rather than that without the AZO driving layer,was more conducive to generating patterned Ag *** a 20-nmthick AZO layer and a 150-nm-thick Ag layer led to the formation of uniformly distributed Ag NPs being aligned along the laser-etched grooves to form a *** as-obtained sample had the best comprehensive photoelectric property with an average transmittance of 79.95%,a sheet resistance of 7.11Ω/sq and the highest figure of merit of 1.50×10^(-2)Ω^(-1),confirming the feasibility of the proposed method and providing enlightenment for related researches of transparent conductive oxide-based films.

关键词： Ag nanoparticle Fluorine-doped tin oxide(FTO) Photoelectric property Laser etching Driving layer

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

Cobalt-catalyzed divergent functionalization of N-sulfonyl amines via β-carbon elimination

引用

Science China Chemistry 2022年第11期65卷 2214-2218页

作者： lun Xu Hang Shi Department of Chemistry Zhejiang UniversityHangzhou310027China Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province School of ScienceWestlake UniversityHangzhou310024China Institute of Natural Sciences Westlake Institute for Advanced StudyHangzhou 310024China

This article demonstrates a catalytic method for C(aryl)-C(alkyl) bond functionalization of N-sulfonyl amines. A cobalt(III)catalyst was used to cleave the C-C bond via β-carbon elimination, providing a metallacycle intermediate. Subsequent allylation,amidation, or alkenylation of the intermediate led to divergent conversions in the presence of diverse coupling partners. when the coupling partner was a diene, an insertion-type functionalization was realized with an exclusive 1,3-regioselectivity, in which both of the fragments derived from N-sulfonyl amines were utilized.

关键词： cobalt amine β-carbon elimination C-C bond activation divergent functionalization

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

Preparation, Characterization and Optical Properties of Host-guest Nanocomposite Material Mordenite-silver Iodide

引用

Chemical Research in Chinese Universities 2003年第2期19卷 140-144页

作者： ZHAIQing-zhou QIUShi-lun ResearchCenterforNanotechnology ChangchunUniversityofScienceandTechnologyChangchun130022P.R.China DepartmentofChemistryandStateKeyLaboratoryofInorganicSynthesis&PreparativeChemistry JilinUniversityChangchun130023P.R.China

Silver iodide nanoclusters were successfully prepared in the channels of mordenite by a heat diffusion method. Powder X ray diffraction, adsorption technique and infrared spectroscopy were used to characterize the prepared materials, which showed that the guest silver iodide had been encapsulated in the channels of mordenite. The optical properties of the solid phase diffuse reflectance absorption of nanocomposite material NaM AgI were studied, showing that the absorption bands of the diffuse reflectance absorption of the prepared material moved to the region of high energy. The absorption peak of the material prepared shifted to the region of high energy. Namely, blue shift was caused. This has demonstrated the incorporation of silver iodide into the channels of the zeolite. We observed the luminescence and surface photovoltage spectra of NaM AgI sample, proposing the mechanisms of the photoluminescence and photovoltaic responses.

关键词： Mordenite host Silver iodide guest Host guest nanocomposite material Optical property

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

Improvement of Performance of HfS_2 Transistors Using a Self-Assembled Monolayer as Gate Dielectric

引用

Chinese Physics Letters 2019年第6期36卷 57-60页

作者： Wen-lun Zhang Department of Electrical and Electronic Engineering Tokyo Institute of Technology

This work details a study based on HfS_(2 )transistors utilizing an n-octadecylphosphonic acid-based self-assembled monolayer(SAM)as the gate *** fabrication of the SAM-based two-dimensional(2D)material transistor is simple and can be used to improve the quality of the interface of air-sensitive 2D *** comparison to HfS_(2) transistors utilizing a conventional Al_2O_(3) gate insulator by atomic layer deposition,HfS_(2) transistors utilizing an SAM as the gate dielectric can reduce the operation region from 4 V to 2 V,enhance the field-effect mobility from 0.03 cm^2/Vs to 0.75 cm^2/Vs,improve the sub-threshold swing from 404 m V/dec to 156 m V/dec,and optimize the hysteresis to 0.03 V,thus demonstrating improved quality of the semiconductor/insulator interface.

关键词： Performance HfS2 Self-Assembled Monolayer Gate Dielectric

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

Local Natural Connectivity in Complex Networks

引用

Chinese Physics Letters 2011年第6期28卷 360-363页

作者： SHANG Yi-lun Institute for Cyber Security University of Texas at San AntonioSan AntonioTX 78249USA

In network theory,a complex network represents a system whose evolving structure and dynamic behavior contribute to its *** natural connectivity is recently proposed as a spectral measure to characterize the robustness of complex *** decompose the natural connectivity of a network as local natural connectivity of its connected components and quantify their contributions to the network *** addition,we compare the natural connectivity of a network with that of an induced subgraph of it based on interlacing *** an application,we derive an inequality for eigenvalues of Erdös-Rényi random graphs.

关键词： connectivity inequality connected

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

人血清锥虫溶解因子与锥虫抗血清相关蛋白

引用

中国寄生虫学与寄生虫病杂志 2008年第2期26卷 136-140,145页

作者：李志(综述) 伦照荣(审校) 中山大学生命科学学院寄生生物研究中心广州510275

分布于非洲的锥虫亚属布氏锥虫罗得西亚亚种和冈比亚亚种可感染人,引起人的非洲锥虫病,而布氏锥虫指名亚种、伊氏锥虫和马媾疫锥虫却不能感染人。人血清中的锥虫溶解因子和锥虫抗血清相关蛋白在其中起着关键作用。本文对人血清锥虫溶解... 详细信息

分布于非洲的锥虫亚属布氏锥虫罗得西亚亚种和冈比亚亚种可感染人,引起人的非洲锥虫病,而布氏锥虫指名亚种、伊氏锥虫和马媾疫锥虫却不能感染人。人血清中的锥虫溶解因子和锥虫抗血清相关蛋白在其中起着关键作用。本文对人血清锥虫溶解因子和锥虫抗血清相关蛋白的研究进展进行了综述。

关键词：锥虫亚属锥虫溶解因子抗血清相关蛋白

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

Correcting Black Carbon Absorption Measurements with Micro-aethalometer Model 200: Insights from Comparative Analysis

引用

Journal of Tropical Meteorology 2023年第4期29卷 401-409页

作者：赵威伦赵春生 Department of Atmospheric and Oceanic Sciences School of PhysicsPeking UniversityBeijing 100871 China

Black carbon(BC)is the strongest visible-light-absorbing aerosol component in the atmosphere,with a sig-nificant impact on Earth’s radiative *** measurement of BC light absorption is crucial for estimating its radiative *** micro-aethalometer model 200(MA200)by AethLabs,USA,offers high-time-resolution measurement of the multi-wavelength absorption coefficient(σ_(ab))within 1 s,making it widely used in aerial measurement due to its compact size and light ***,the reliability of the measuredσ_(ab) has not been extensively studied in previous *** this study,we evaluate the performance of MA200 by comparingσ_(ab) measurements obtained from MA200 with those from the aethalometer model 33(AE33)by Magee,*** results revealed a significant variation in the determinant coefficient(R 2)betweenσ_(ab) measurements from MA200 and AE33,depending on the time *** R 2 increases from 0.1 to 0.5 and further to 0.97 as the time resolution of σ_(ab) increases from 1 s to 30 s and 60 s,*** recommend a minimum time resolution of 30 s for stableσ_(ab) measurements using ***,we determineσ_(ab) from attenuation coefficient(σ_(ATN))measured by MA200 asσ_(ab)=(σ_(ATN)-σ_(0))/C_( MA),whereσ_(0 )ranges from-15.3 Mm-1 to-6.4 Mm-1 and C MA ranges from 2.65 to *** the measuredσ_(ab) based on the findings of this study can provide reliable results for estimating the radiative effects of BC.

关键词： black carbon absorption MA200 AE33

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：