检索结果-南通市图书馆

Agricultural Sciences in China 2011年第3期10卷 463-467页

作者： WANG Zhan-li ZHANG sai-sai WANG Wei FENG Feng-qin SHAN Wei-guang Department of Food Science and Nutrition Zhejiang University Hangzhou 310029 P.R.China College of Pharmaceutical Science Zhejiang University of Technology Hangzhou 310014 P..R. China Institute of Quality and Standard for Agriculture Products Zhejiang Academy of Agriculture Sciences Hangzhou 310021 P.R.China

Angiotensin I converting enzyme （ACE） plays an important physiological role in the regulation of hypertension. In this study, we applied virtual screening to discover a novel angiotensin I converting enzyme inhibitory peptides from milk casein. One potential hit was identified based on docking scores, subsequently confirmed by activity studies in vitro （IC50=20.85 μmol L-1）. The proposed peptide in this study contains a unique sequence, Lys-Val-Leu-Ile-Leu-Ala. Moreover, we performed the docking studies to understand the binding mode between the enzyme and peptide hit.

关键词： novel angiotensin I converting enzyme inhibitory peptide virtual screening docking

Improved photocatalytic performance of acetaldehyde degradation via crystal plane regulation on truncated octahedral CeO_(2)

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第5期43卷 2026-2038页

作者： Bin Xu Lu Jia Hui Yang Yue Wang Si-Yu Fan sai-sai Yuan Qi-TaoZhang Ming Zhang Teruhisa Ohno School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China College of Environmental Science and Engineering Yangzhou UniversityYangzhou225127China Department of Applied Chemistry Faculty of EngineeringKyushu Institute of TechnologyKitakyushu804-8550Japan School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212000China National&Local Joint Engineering Research Center for Mineral Salt Deep Utilization Huaiyin Institute of TechnologyHuaian 223003China School of Materials Science and Engineering Henan University of Science and TechnologyLuoyang 471000China International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China

In this study,the truncated octahedral CeO_(2)(CeO_(2)-to)with special morphology was prepared by the solvothermal method with oleic acid(OA)and oleamine(OM)as the morphology-directing ***-resolution transmission electron microscopy(HRTEM)results show that CeO_(2)-to exposes composite{100}and{111}facets,while CeO_(2)cubic(CeO_(2)-c)and CeO_(2)octahedral(CeO_(2)-o)only expose single crystal facets of{100}plane and{111}plane,***,this CeO_(2)-to photocatalyst exhibits remarkable photooxidation performance of gaseous acetaldehyde(CH_(3)CHO)degradation,in which CO_(2)generation value reaches 1.78 and 7.97-times greater than that of CeO_(2)-c and CeO_(2)-o,*** addition,the active species trapping experiment signifies that superoxide(·O_(2)^(-))and holes(h^(+))are the main reactive substances during the CH_(3)CHO degradation process,and the electron paramagnetic resonance(EPR)spectra indicates that the former is the major ***,the electron transfer mechanism between CeO_(2)-to{100}and{111}facets and the surface oxygen adsorption ability are revealed via density functional theory(DFT)*** is also confirmed that{100}facets are more conducive to the absorption of acetaldehyde than{111}***,a reasonable mechanism for improved photocatalytic CH_(3)CHO degradation on CeO_(2)-to is proposed based on relevant experiments and DFT *** study demonstrates that the systematic development of surface homojunction structured photocatalysts can efficiently increase the degradation activity for volatile organic compounds(VOCs).It also offers additional direction for optimizing the photocatalytic activity of other ceriumbased photocatalysts.

关键词： Truncated octahedral CeO_(2)(CeO_(2)-to) Composite crystal faces Surface energy level Efficient electrontransfer

CD9 role in proliferation, rejuvenation, and therapeutic applications

在线全文

学校读者我要写书评

暂无评论

Genes & Diseases 2024年第3期11卷 95-97页

作者： sai Priyanka Kodam Neda Baghban Mujib Ullah Institutefor Immunityand Transplantation Stem Cell Biology and Regenerative MedicineSchool of MedicineMolecular Medicine Department of MedicineStanford UniversityPaloAltoCA94304USA

The CD9 gene,also known as the Tspan29 gene,codes for a protein called CD9,which is a member of the tetraspanin family of transmembrane proteins.^(1) The CD9 protein is involved in various cellular processes,including cell proliferation,differentiation,adhesion,and migration.^(1,2) CD9 has also been found to play a role in the regulation of stem cell proliferation and differentiation.

关键词： migration. therapeutic CD9

High-energy sodium-ion hybrid capacitors through nanograin-boundary-induced pseudocapacitance of Co_(3)O_(4) nanorods

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第6期31卷 338-346,I0009页

作者： Wenliang Feng Venkata sai Avvaru Steven JHinder Vinodkumar Etacheri IMDEA Materials Institute C/Eric Kandel 2GetafeMadrid 28906Spain Universidad Politécnica de Madrid E.T.S.de Ingenieros de Caminos28040 MadridSpain Universidad Autónoma de Madrid C/Francisco Tomás y Valiente728049 MadridSpain Surface Analysis Laboratory Faculty of Engineering and Physical Sciences University of Surrey GuildfordSurrey GU27XHUnited Kingdom

Sodium-ion hybrid capacitors (SICs) have been proposed to bridge performance gaps between batteries and supercapacitors,and thus realize both high energy density and power density in a single ***,applications of SICs are severely restricted by their insufficient energy densities (<100Wh/kg) resulted from the kinetics imbalance between cathodes and ***,we report a nanograin-boundary-rich hierarchical Co_(3)O_(4) nanorod anode composed of~20 nm *** pseudocapacitance (up to 72%@1.0 mV/s) is achieved through nanograin-boundary-induced pseudocapacitive-type Na^(+) storage ***_(3)O_(4) nanorod anode delivers in this case highly reversible capacity (810 mAh/g@0.025 A/g),excellent rate capability (335 mAh/g@5.0 A/g),and improved cycle stability (100 cycles@1.0 A/g with negligible capacity degradation).The outstanding performance can be credited to the hierarchical morphology of Co_(3)O_(4) nanorods and the well-designed nanograinboundaries between nanocrystallites that avoid particle agglomeration,induce pseudocapacitive-type Na^(+) storage,and accommodate volume variation during sodiation-desodiation *** of the Co_(3)O_(4) nanorods not only generates defects for extra surficial Na^(+) storage but also increases the electronic conductivity for efficient charge separation and lowers energy barrier for Na^(+) *** of conventional reaction mechanism and pseudocapacitive-type Na^(+) storage enables high specific capacity,rapid Na^(+) diffusion,and improved structural stability of the Co_(3)O_(4) nanorod *** SIC integrating this highly pseudocapacitive anode and activated carbon cathode delivers exceptional energy density (175 Wh/kg@40 W/kg),power density (6632 W/kg@37 Wh/kg),cycle life (6000 cycles@1.0 A/g with a capacity retention of 81%),and coulombic efficiency (~100%).

关键词： Sodium-ion hybrid capacitor Cobalt oxide nanorod Nanograin-boundary Pseudocapacitance

Estimation Based Adaptive Constraint Control for a Class of Coupled String Systems

在线全文

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2022年第8期9卷 1536-1539页

作者： sai Zhang Li Tang Yan-Jun Liu College of Science Liaoning University of TechnologyJinzhou 121001China

Dear editor,In this letter,the boundary tension constraint-based adaptive boundary control problem is investigated for a class of flexible string systems with unknown boundary disturbances and unknown parameters,with ... 详细信息

关键词： boundary letter constraint

Effect of exchange-correlation functionals on the estimation of migration barriers in battery materials

在线全文

学校读者我要写书评

暂无评论

npj Computational Materials 2022年第1期8卷 1533-1545页

作者： Reshma Devi Baltej Singh Pieremanuele Canepa Gopalakrishnan sai Gautam Department of Materials Engineering Indian Institute of ScienceBengaluruKarnatakaIndia Department of Materials Science and Engineering National University of SingaporeSingaporeSingapore Department of Chemical and Biomolecular Engineering National University of SingaporeSingaporeSingapore

Facile ionic mobility within host frameworks is crucial to the design of high-energy-density batteries with high-power-densities,where the migration barrier(Em)is the governing ***,we assess the accuracy and computational performance of generalized gradient approximation(GGA),the strongly constrained and appropriately normed(SCAN),and their Hubbard U corrections,GGA+U and SCAN+U,within the density functional theory-nudged elastic band framework,in the prediction of Em as benchmarked against experimental ***,we observe SCAN to be more accurate than other frameworks,on average,albeit with higher computational costs and convergence difficulties,while GGA is a feasible choice for“quick”and“qualitative”Em ***,we quantify the sensitivity of Em with adding uniform background charge and/or the climbing image approximation in solid electrolytes,and the Hubbard U correction in *** findings will improve the quality of Em predictions which will enable identifying better materials for energy storage applications.

关键词： correction Hubbard approximation

Linear and nonlinear elastic analysis of closely spaced strip foundations using Pasternak model

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Structural and Civil Engineering 2017年第2期11卷 228-243页

作者： Priyanka GHOSH S. RAJESH J. sai CHAND Department of Civil Engineering Indian Institute of Technology Kanpur Kanpur 208016 India

In this study, an attempt is made to determine the interaction effect of two closely spaced strip footings using Pasternak model. The study considers small strain problem and has been performed using linear as well as nonlinear elastic analysis to determine the interaction effect of two nearby strip footings. The hyperbolic stress-strain relationship has been considered for the nonlinear elastic analysis. The linear elastic analysis has been carried out by deriving the equations for the interference effect of the footings in the framework of Pasternak model equation; whereas, the nonlinear elastic analysis has been performed using the finite difference method to solve the second order nonlinear differential equation evolved from Pasternak model with proper boundary conditions. Results obtained from the linear and the nonlinear elastic analysis are presented in terms of non-dimensional interaction factors by varying different parameters like width of the foundation, load on the foundation and the depth of the rigid base. Results are suitably compared with the existing values in the literature.

关键词： bearing capacity linear and non-linear elasticity foundation interaction effect numerical modeling Pastemak model

An unprecedented dumbbell-shaped pentadeca-nuclear W-Er heterometal cluster stabilizing nanoscale hexameric arsenotungstate aggregate and electrochemical sensing properties of its conductive hybrid film-modified electrode

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 Research 2022年第4期15卷 3628-3637页

作者： Dan Wang Jun Jiang Meng-Ya Cao sai-sai Xie Ya-Min Li Li-Juan Chen Jun-Wei Zhao Guo-Yu Yang Henan Key Laboratory of Polyoxometalate Chemistry College of Chemistry and Chemical EngineeringHenan UniversityKaifeng 475004China MOE Key Laboratory of Cluster Science School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081China

Cluster-based functional materials have made remarkable progress owing to their wonderful structures and distinctive physicochemical performances,one of on-going advancements of which is basically driven by synthetic chemistry of exploring and constructing novel nanosized gigantic polyoxometalate(POM)*** this article,an unprecedented nanoscale hexameric arsenotungstate aggregate Na_(9)K_(16)H_(4)[Er_(0.5)K_(0.5)(H_(2)O)_(7)][Er_(5)W10O_(2)6(H_(2)O)_(14)][B-α-AsW_(9)O_(33)]_(6)·102H_(2)O(1)has been synthesized by the combined synthetic strategy of simultaneously using the arsenotungstate precursor and simple tungstate material in a highly acidic aqueous ***{[Er_(5)W_(10)O_(26)(H_(2)O)_(14)][B-α-AsW_(9)O_(33)]6}31-polyanion in 1 consists of an intriguing dumbbell-shaped pentadeca-nuclear W-Er heterometal{Er_(5)W10O_(2)6(H_(2)O)_(14)}^(23+)cluster connecting six trilacunary[B-α-AsW_(9)O_(33)]^(9-)moieties,which has never been seen ***,through electropolymerization of 1 and pyrrole on the conductive substrate,a thickness-controllable and robust 1-PPY(PPY=polypyrrole)hybrid film was successfully prepared,which represents the first POM-PPY film assembled from high-nuclear lanthanide(Ln)encapsulated POM and PPY *** 1-PPY film-based electrochemical biosensor exhibits a favorable recognition performance for ochratoxin A in multiple *** work not only provides a feasible combined synthetic strategy of the POM precursor and simple tungstate material for constructing complicated multi-Ln-inserted POM aggregates,but also offers a promising electrochemical platform constructed from POM-based conductive films for identifying trace biomolecules in complex environments.

关键词： polyoxometalate lanthanide-inserted arsenotungstate polyoxometalate-based conductive film

Effects of hedgerows on sediment erosion in Three Gorges Dam Area, China

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Sediment Research 2008年第2期23卷 119-129页

作者： sai-Leung NG Kwai-Cheong CHAU Department of Geography and Resource Management the Chinese University of Hong KongHong KongChinaProf

The Three Gorges Dam Area refers to the river section from Chongqing to Yichang on the Yangtze River,which has a drainage area of 75,098 km2,and involves 19 cities and *** hedgerows have been used in this area to control soil erosion and to improve hillslope stability in the catchment of this river *** experimental hedgerow plots were established in 1994 in order to study the effects of hedgerows on erosion *** the period of 1994-1997,runoff and soil loss data were collected on these test plots,including the chemical and physical properties of soil and related topographical *** results indicate that:(1) after 4 years of cultivation and crop planting,soil fertility increased dramatically in the hedgerow *** organic matter,total nitrogen,and total phosphorus contents in the hedgerow plots were 5-9 times higher than that in the control *** each of the hedgerow plots,soil structure became more stable,the quantity of granules larger than 0.02 mm increased and those finer than 0.02 mm decreased;(2) All hedgerow plots showed a major effect on reducing soil loss and surface runoff;(3) Overland flow velocity along the upper portion of the hedgerow plots was greatly reduced due to hedgerow resistance,which explains the significant decrease in soil losses in hedgerow plots,despite the fact that the hedgerow plots and the control plots had the same total runoff.

关键词： Hedgerow Erosion Runoff Soil properties Three Gorges Dam Project

Approximation Algorithm for the Balanced 2-Correlation Clustering Problem

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Tsinghua Science and Technology 2022年第5期27卷 777-784页

作者： sai Ji Dachuan Xu Donglei Du Ling Gai Zhongrui Zhao Department of Operations Research and Information Engineering Beijing University of TechnologyBeijing 100124China Beijing Institute for Scientific and Engineering Computing Beijing University of TechnologyBeijing 100124China Faculty of Business Administration University of New BrunswickFrederictonNB E3B 5A3Canada Glorious Sun School of Business and Management Donghua UniversityShanghai 200051China

The Correlation Clustering Problem(CorCP) is a significant clustering problem based on the similarity of *** has significant applications in different fields,such as machine learning,biology,and data mining,and many different problems in other *** this paper,the Balanced 2-CorCP(B2-CorCP) is introduced and examined,and a new interesting variant of the CorCP is *** goal of this clustering problem is to partition the vertex set into two clusters with equal size,such that the number of disagreements is *** first present a polynomial time algorithm for the B2-CorCP on M-positive edge dominant graphs(M≥ 3).Then,we provide a series of numerical experiments,and the results show the effectiveness of our algorithm.

关键词： balanced clustering k-correlation clustering positive edge dominant graphs approximation algorithm