检索结果-南通市图书馆

Hexagonal packing lattice formed by functionalized gold nanoparticles

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2022年第11期41卷 3858-3864页

作者： Xiao-bin Mang Lian-Qi yao Department of Research and Development Shanghai YS Information Technology Co.LtdShanghai200240China Department of Quality Inspection Shanghai Hutchison PharmaceuticalsShanghai200331China

Nanostructures formed by functionalized gold nanoparticles(GNPs)were studied using X-ray diffraction(XRD).Two systems of such functionalized GNPs,one with gold core grafted by both ligand(rod-like liquid crystalline molecule)and co-ligand(alkylthiols)and the other one with only ligand grafted,were *** presence of ligands and co-ligands increases the mobility of GNPs and induces long-range ordered packing style with the change of *** both systems,functionalized GNPs form columns first and then pack on hexagonal *** is found that the correlation along column direction is dependent on surface conditions of GNPs,which is observed for system with only ligand *** on experimental results,size of gold core and number of ligand and co-ligand belonging to each gold core were *** intensities and electron density map of each structure were simulated,which are evidently similar to experimental ***,structure model was proposed and *** results help us to understand and control the way that organic molecules affect the organization of nanoparticles,and facilitate the design of new hybrid materials.

关键词： Nanostructures Gold nanoparticles Simulation

MULTIPLE ELECTRONIC CONTROL UNITS CALIBRATION SYSTEM BASED ON EXPLICIT CALIBRATION PROTOCOL AND J1939 PROTOCOL

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2008年第1期21卷 42-46页

作者： ZHU Keqing XU Quankui YANG Lin zhuo bin Institute of Automotive Electronic Technology Shanghai Jiaotong University Shanghai 200030 China

The rising number of electronic control units （ECUs） in vehicles and the decreasing time to market have led to the need for advanced methods of calibration. A multi-ECU calibration system was developed based on the explicit calibration protocol （XCP） and J1939 communication protocol to satisfy the need of calibrating multiple ECUs simultaneously. The messages in the controller area network （CAN） are defined in the J1939 protocol. Each CAN node can get its own calibration messages and information from other ECUs, and block other messages by qualifying the CAN messages with priority, source or destination address. The data field of the calibration message is designed with the XCP, with CAN acting as the transport layer. The calibration sessions are setup with the event-triggered XCP driver in the master node and the responding XCP driver in the slave nodes. Mirroring calibration variables from ROM to RAM enables the user to calibrate ECUs online. The application example shows that the multi-ECU calibration system can calibrate multiple ECUs simultaneously, and the main program can also accomplish its calculation and send commands to the actuators in time. By the multi-ECU calibration system, the calibration effort and time can be reduced and the variables in ECU can get a better match with the variables of other ECUs.

关键词： Electronic control unit (ECU) Calibration Explicit calibration protocol (XCP) J1939 communication protocol Controlled area network (CAN)

Grazing-incidence small-angle X-ray scattering property of double-layered gold nanoparticle arrays

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2022年第10期41卷 3585-3590页

作者： Xiao-bin Mang Lian-Qi yao Department of Research and Development Shanghai YS Information Technology Co.LtdShanghai200240China Department of Quality Inspection Shanhai Hutchison PharmaceuticalsShanghai200331China

Gold nanoparticle arrays fabricated via layerby-layer technique were investigated using grazing-incidence small-angle X-ray scattering(GISAXS) *** containing two gold nanoparticle layers that were separated by 5,11,15 and 21 poly electrolyte(PE) interlayers were *** using different X-ray incident angles,correlations of gold nanoparticles(GNPs) in the same layer and in two different layers were *** is found that both sideway correlations between GNPs in the same layer and vertical correlation between two gold nanoparticle layers depend on the thickness of PE *** to sideway correlation,the size of GNPs is determined to be(13.0±0.5) nm in all of the four samples,which was also proved by scanning electron microscopy(SEM) and theoretical calculation of form factor of spherical *** vertical correlation,distance between two gold nanoparticle layers was determined for sample with 11,15 and 21 PE *** distances can be reasonably explained with the number of PE layers and the thickness of single PE *** results indicate that by repeated depositing of oppositely charged PE layers,a true three-dimensional(3 D) nanostructure can eventually be designed.

关键词： Gold nanoparticle array 3D nanostructure Grazing-incidence small-angle X-ray scattering Form factor Nanocomposites

Trimetallic mesoporous PdCuRu for efficient formate electrosynthesis from polyethylene terephthalate recycling

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年

作者： Yuting Li Huiqin yao Lizhi Sun Shu Han Xiaoxiang Xu Guangyin Fan Ben Liu College of Chemistry and Materials Science Sichuan Normal University Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University School of Basic Medical Sciences Ningxia Medical University Department of Otorhinolaryngology-Head and Neck Surgery Zhongnan Hospital of Wuhan University

Electrochemical recycling of waste polyethylene terephthalate（PET） plastics represents a green and sustainable route to produce valuable fuels and address serious environmental issues. Despite some encouraged achievements, their progress is still slower because of the lack of highly active and selective electrocatalysts. Here, we reported an efficient PET recycling route with trimetallic PdCuRu mesoporous nanospheres（MSs） as a high-performance electrocatalyst that achieved selective electrosynthesis of valuable formate from PET hydrolysate（PETH） electrooxidation. Penetrated metal mesopores and trimetallic compositions of PdCuRu MSs synergistically optimized electronic structures of Pd sites and changed chemisorption properties of intermediates, which disclosed a high formate Faradic efficiency of 97% and impressive yield rate of 0.49 mmol h-1cm-2in an alkaline solution. Meanwhile, this electrocatalyst held good electrocatalytic stability, retaining high formate Faradic efficiency and yield rate even being performed for 10 cycles, which highlighted its potential applications for practical PET recycling. Our study provides a powerful strategy for designing high-performance electrocatalysts toward selective electro-synthesis of valuable fuels from various waste plastics.

关键词：

TMED3 promotes prostate cancer via FOXO1a and FOXO3a phosphorylation

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Oncology Research 2025年第1期33卷 161-169页

作者： XIUWANG WEI JIANBO LIANG HUANWEN HUANG DAMING YANG XINXIN WANG XIUJIA WANG CHANGSHENG CHEN KAIQIANG LI TAISEN PANG bin HU FENGNING WU Department of Urology The People’s Hospital of Guangxi Zhuang Autonomous RegionNanning530000China Department of Rehabilitation The People’s Hospital of Guangxi Zhuang Autonomous RegionNanning530000China

Background:Transmembrane emp24 trafficking protein 3(TMED3)is associated with the development of several tumors;however,whether TMED3 regulates the progression of prostate cancer remains *** and Methods:Short hairpin RNA was performed to repress TMED3 in prostate cancer cells(DU145 cells)and in a prostate cancer mice model to determine its function in prostate cancer in vitro and in ***:In the present study,we found that TMED3 was highly expressed in prostate cancer *** vitro,shTMED3 treatment suppressed the proliferation,invasion,and migration and promoted the apoptosis of DU145 ***,the Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis showed a strong correlation between TMED3 and forkhead box O transcription factor(FOXO)***,TMED3 inhibition efficiently decreased FOXO1a and FOXO3a *** vivo,TMED3 downregulation suppressed the apoptosis,growth,and metastasis of prostate cancer cells via FOXO1a and ***:The present findings show that TMED3 participates in the regulation of prostate cancer progression via FOXO1a and FOXO3a phosphorylation,thereby revealing a novel mechanism underlying prostate cancer development and suggesting that TMED3 inhibition may serve as a novel strategy for prostate cancer treatment.

关键词： Prostate cancer Transmembrane emp24 trafficking protein 3(TMED3) forkhead box O transcription factor(FOXO) Proliferation Apoptosis

Lightweight Al-Nb-Ti-V-Cr high entropy alloys with high hardness and enhanced mechanical properties via doping Co

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

China Foundry 2025年

作者： Fang-dong Xu De-zhi Chen Rui-run Chen bin Gan Jing-yue Yu National Key Laboratory for Precision Hot Processing of Metals Harbin Institute of Technology Suzhou Laboratory

To develop high-hardness and high-strength lightweight high entropy alloys （LHEAs）,a series of CoxAlNbTiVCr alloys were *** phase constitution,distribution,and crystal structure of the Laves phase in alloys can be altered by adjusting the composition of HEAs,which in turn influences their mechanical *** Nb Ti VCr （x=0,0.5,1,1.5,and 2,atomic ratio percentage） LHEAs were designed and prepared to characterize the microstructure and tailor the mechanical *** introduction of Co changes the microstructure of LHEAs from a single B2 structure to a mixture dendrite structure,which consists of B2 phase,C14 and C15 Laves *** the C14 and C15 Laves phases exhibit coupled *** parameters including mixing enthalpy (ΔHmix),valence electron concentration （VEC）,atomic radius size （δ）,mixing entropy （ΔS）,and electronegativity difference （Δχ） are used to predict the formation of B2 and Laves phase in *** the Co content increases from 0 to 1.5at.%,Laves phase volume fraction gradually increases,which leads to an enhancement in the compressive strength from 1,520.8 MPa to 1,844.4 ***1.5Al Nb Ti VCr alloy exhibits the maximum Vickers hardness of 699.4 *** improvement of mechanical properties mainly originates from solid solution strengthening and second phase strengthening.

关键词：

Modular assembly of complex C-alkyl glycoside enabled via cooperative NHC and photoredox catalysis

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2025年

作者： Rui-Qiang Jiao Ming Li Xi Chen Mei-Ze Xu Tian Ding Xiao-Ping Gong zhuo-Mei Li Xue-Yuan Liu Yong-Min Liang State Key Laboratory of Applied Organic Chemistry Lanzhou University College of Chemistry and Chemical Engineering Northwest Normal University

C-Alkyl glycosides are found in natural products and are indispensable in drug development programs,owing to their diverse range of medicinal ***-component reactions involving glycosyl radical addition are well documented and proved efficient for the C-alkyl glycosides ***,multicomponent reactions for the rapid and controllable construction of structurally diversified C-alkyl glycosides in a single step remains a significant challenge due to the issues associated with balancing reactivity,compatibility,and ***,we report an NHC and photoredox co-catalyzed three-component method to access complex and valuable C-alkyl *** protocol exhibits broad substrate scope and excellent chemoand ***,nine types of sugars are compatible with this *** addition,the generality of this catalytic strategy was further highlighted by the potential for scalable production,the feasibility of further modifications of the products and its successful application in the late-stage functionalization of pharmaceutical skeletons.

关键词：

A Note on Restricted Representations of the Witt Superalgebras

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Annals of Mathematics,Series B 2013年第6期34卷 921-926页

作者： Yufeng yao bin SHU Department of Mathematics Shanghai Maritime University Department of Mathematics East China Normal University

Let F be an algebraically closed field of prime characteristic p>3,and W(n)the Witt superalgebra over F,which is the Lie superalgebra of superderivations of the Grassmann algebra in n *** dimensions of simple atypical modules in the restricted supermodule category for W(n)are precisely calculated in this paper,and thereby the dimensions of all simple modules can be precisely ***,the restricted supermodule category for W(n)is proved to have one block.

关键词： Restricted Lie superalgebra Witt superalgebra Restricted representation Atypical weight

High-temperature self-powered X-ray detection in a bilayered hybrid ferroelectric halide perovskite

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年

作者： Yingying Zheng Panpan Yu Yunpeng yao Shihai You Zeng-Kui Zhu Junhua Luo School of Chemistry and Chemical Engineering Jiangxi Normal University Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education Jiangxi Normal University School of Environmental and Material Engineering Yantai University Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China

X-ray detectors which convert X-ray irradiation into electrical signals play an important role in diverse applications including medical diagnosis, security examination, nondestructive inspection, personal X-ray dosimeters and fundamental research[1–5]. Recently, metal halide perovskites（MHP） have been developed as a promising family for X-ray detection contributing to their intrinsic advantages, e.g.,simple synthesis, efficient X-ray absorption and excellent semiconducting properties[5–10].

关键词：