检索结果-南通市图书馆

Bimetallic NiCoP catalysts anchored on phosphorus-doped lignin-based carbon for robust oxygen evolution performance

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第7期43卷 3084-3095页

作者： ling-Ying-Zi Xiong Bo-Wen Liu Lei Du Yue-Kuan Zhou Xu-Liang Lin Huan wang Guangdong Engineering Technology Research Center for Sensing Materials&Devices Guangzhou Key Laboratory of Sensing Materials&DevicesSchool of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou 510006China School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center Jieyang 515200China Sustainable Energy and Environment Thrust Function HubThe Hong Kong University of Science and Technology(Guangzhou)Guangzhou 511400China Division of Emerging Interdisciplinary Areas Department of Mechanical and Aerospace EngineeringThe Hong Kong University of Science and TechnologyHong Kong 999077China State Key Lab of Pulp and Paper Engineering South China University of TechnologyGuangzhou 510640China

Oxygen evolution reaction(OER)catalysts are the key core materials that determine the performance of fuel cells,metal-air batteries,electrolytic water decomposition,and other *** this work,a green lignin-based non-precious metal OER catalyst was prepared by a simple ***,c arboxylated lignin was used to complex Ni and Co in situ,and then they were placed with sodium hypophosphite in the same tube furnace for upstream and downstream high-temperature calcination to construct a lignin carbon-based Ni-Co bimetallic OER catalyst(NiCoP@C).The synthesized catalyst is a porous bimetallic phosphide with a three-dimensional network structure and high-density electrochemical active ***@C exhibited favorable catalytic activity for the oxygen evolution reaction(OER)with overpotential of 280 mV at 10 mA·cm~(-2)and a Tafel slope of 77 mV·dec~(-1).Additionally,it exhibited remarkable durability during *** functional theory(DFT)calculations revealed that by leveraging the distinctive structure of transition metal phosphide nanoparticles incorporated into a reticulated substrate,the NiCoP@C catalyst offered an increased number of active sites for OER catalysis,significantly enhancing its stability during practical *** present study broadens the utilization pathways of biomass to"turn waste into treasure,"aligning the development concept of green sustainable development.

关键词： Oxygen evolution reaction Lignin Carbon-based catalyst Nickel-cobalt bimetal Metal phosphide

Jitter analysis and modeling of a 10 Gbit/s SerDes CDR and jitter attenuation PLL

在线全文

学校读者我要写书评

暂无评论

The Journal of China Universities of Posts and Telecommunications 2011年第6期18卷 122-126页

作者： wang hui CHEN Ying-mei YI Lv-fan WEN Guan-guo Institute of RF- ＆ OE-ICs Southeast University Nanjing 210096 China Zhongxing Telecom Equipment Corporation Shenzhen 518055 China

Jitter analysis and a linear model is proposed in this paper which predicts the characteristics of serial-deserial （SerDes） clock and data recovery circuit, and the characteristics include jitter transfer, jitter tolerance and jitter generation are particularly analyzed. The simulation results of the clock data recovery （CDR） model show that the jitter specifications exceed the mask of ITU-T optical transport network （OTN） G.8251 recommendations. The whole systems are validated by 9.95-11.5 Gbit/s CDR and the jitter attenuation phase locked loops （PLL） circuits using TSMC 65 nm CMOS technology.

关键词： OTN SerDes Jitter CDR PLL

基础教育高质量发展的理论内涵、逻辑架构与实践路径

在线全文

学校读者我要写书评

暂无评论

教学与管理 2025年第1期 1-5页

作者：汪源大连大学教育学院辽宁大连116622

中国式现代化作为新时代党中央针对国家发展作出的战略部署,指引着当前我国各领域的变革发展。中国式教育现代化作为其中一环,需要锚定“高质量发展”这一首要任务。而基础教育作为教育系统的基石,应在中国式教育现代化进程中充分发挥... 详细信息

中国式现代化作为新时代党中央针对国家发展作出的战略部署,指引着当前我国各领域的变革发展。中国式教育现代化作为其中一环,需要锚定“高质量发展”这一首要任务。而基础教育作为教育系统的基石,应在中国式教育现代化进程中充分发挥支柱功能。在教育现代化引领下,“教育强国”“规范管理”“公平均等”“数字赋能”等战略任务,为基础教育高质量发展指明了方向,体现出中国式现代化的独特属性。基础教育涉及面广,要想实现高质量发展需要厘清逻辑框架,从政府、学校、家庭、社会等多方面推动教育现代化发展。中国式现代化进程中,基础教育高质量发展实践路径应始终围绕教育发展核心目标,科学且有组织地探索明确教育方向、推进教育治理、持续教育改革、坚持教育创新等实践路径。

关键词：中国式现代化基础教育高质量发展教育现代化

2+0 CYP21A2 deletion carrier—a limitation of the genetic testing and counseling:A case report

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2021年第23期9卷 6789-6797页

作者： Na Xi Xiao Song Xue-Yan wang Sheng-Fang Qin Guan-Nan He ling-ling Sun Xi-Min Chen Department of Medical Genetics and Prenatal Diagnosis Sichuan Provincial Hospital for Women and ChildrenChengdu 610045Sichuan ProvinceChina Department of Ultrasound Sichuan Provincial Hospital for Women and ChildrenChengdu 610045Sichuan ProvinceChina

BACKGROUND CYP21A2 gene mutations may all cause reduction or loss of 21-hydroxylase activity,leading to development of congenital adrenal hyperplasia(CAH)with different clinical *** families with CAH children,genetic testing of the parents and genetic counseling are recommended to assess the risk of *** SUMMARY We report a case of CAH with a high suspicion before *** risk of the child suffering from CAH during the pregnancy had been underestimated due to the deviation of genetic counseling and genetic testing *** report confirmed a CYP21A2 homozygous deletion in this case,CYP21A2 heterozygous deletion in the mother,and a rare 2+0 CYP21A2 deletion in the *** It is important to analyze the distribution of CYP21A2 gene in the two alleles of parents of children with CAH.

关键词： CYP21A2 gene mutations Congenital adrenal hyperplasia Pregnancy Genetic counseling Genetic testing Pathogenic point mutations Alleles

Whole-Chip ESD Protection Design for RF and AMS ICs

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Tsinghua Science and Technology 2010年第3期15卷 265-274页

作者： Xin wang Siqiang FAN hui ZHAO Lin LIN Qiang FANG He TANG Albert wang Department of Electrical Engineering University of California Riverside CA 92521 USA Freescale Semiconductor Inc. Irvine CA 92618 USA

As integrated circuits （IC） technologies advance into very-deep-sub-micron （VDSM）, electrostatic discharge （ESD） failure becomes one of the most devastating IC reliability problems and on-chip ESD protection design emerges as a major challenge to radio frequency （RF）, analog, and mixed-signal （AMS） IC designs. This paper reviews key design aspects and recent advances in whole-chip ESD protection designs for RF/AMS IC applications in CMOS technologies.

关键词： electrostatic discharge (ESD) ESD protection radio frequency (RF) parasitic capacitance

Universal design of three-dimensional porous graphene-iron based promotors for kinetically rationalized lithium-sulfur chemistry

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 192-200页

作者： Hua Gao Yunfeng Zhang Menglei wang Ruoxuan Yang Shuai Feng Xuan Cao Yaping Zhang Zhongyuan Lu Yingze Song State Key Laboratory of Environment-Friendly Energy Materials School of Materials and Chemistry Southwest University of Science and Technology School of Material Science and Engineering Henan University of Technology College of Chemistry and Chemical Engineering Taishan University

Lithium-sulfur （Li-S） batteries are widely deemed to be one of the most potential candidates for future secondary batteries because of their remarkable energy ***,notorious polysulfide shuttling and retarded sulfur reaction kinetics pose significant obstacles to the further application of Li-S *** rationally designed highly active electrocatalysts can facilitate polysulfide conversion,the universal and scalable synthesis strategies need to be ***,a universal synthetic strategy to construct a series of three-dimensional （3D） porous graphene-iron （3DGr-Fe） based electrocatalysts involving 3DGr-FeP,3DGr-Fe3C,and 3DGr-Fe3Se4is exploited for manipulating the Li-S redox *** has been observed that the implementation of a 3D porous Gr architecture leads to the well-designed conductive networks,while the uniformly dispersed iron nanoparticles introduce an abundance of active sites,fostering the lithium polysulfide conversion,thereby bolstering the overall electrochemical *** Li-S battery with the 3DGr-Fe based electrocatalyst exhibits remarkable capacity retention of 94.8%upon 100 times at 0.2 ***,the soft-packaged Li-S pouch cell based on such a 3DGr-Fe electrocatalyst delivers superior capacity of 1060.71 mA h g-1and guarantees for the continuous 30 min work of fan *** investigation gives comprehensive insights into the design,synthesis,and mechanism of 3DGr-Fe based electrocatalysts with high activity toward efficient and durable Li-S batteries.

关键词： Lithium-sulfur battery Universal synthesis 3D graphene-iron based promotor Electrocatalysis

High-performance aqueous symmetric sodium-ion battery using NASICON-structured Na2VTi（PO4）3

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2018年第1期11卷 490-498页

作者： Hongbo wang Tianran Zhang Chao Chen Min ling Zhan Lin Shanqing Zhang Feng Pan Chengdu Liang Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological Engineering Zhejiang University Hangzhou 310027 China Department of Mechanical Engineering National University of Singapore Singapore 117576 Singapore College of Light Industry and Chemical Engineering Guangdong University of Technology 6uangzhou 510006 China Centre for Clean Environment and Energy Environmental Futures Research Institute and Griffith School of Environment Gold Coast Campus Gfiffith University QLD 4222 Australia School of Advanced Materials Peking University Shenzhen Graduate School Shenzhen 518055 China

A high-safety and low-cost route is important in the development of sodium-ion batteries, especially for large-scale stationary battery systems. An aqueous sodium-ion battery is demonstrated using a single NASICON-structured Na2VTi（PO4）3 material with the redox couples of V4＋/V3＋ and Ti4＋/Ti3＋ working on the cathode and anode, respectively. The symmetric full cell fabricated based on the bi-functional electrode material exhibits a well-defined voltage plateau at ~ 1.2 V and an impressive cycling stability with capacity retention of 70% exceeding 1,000 cycles at 10C （1C = 62 mA.g-1）. This study provides a feasible strategy for obtaining high-safety and low-cost rechargeable batteries using a single active material in aqueous media.

关键词： Na2VTi(PO4) 3 aqueous symmetric sodium-ion batteries

Protein regulation mechanism of cold tolerance in Haemaphysalis longicornis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Insect Science 2023年第3期30卷 725-740页

作者： Ningmei wang Aimeng Ji Abolfazl Masoudi Shuang Li Yuhong Hu Yefei Zhang Zhijun Yu Han wang hui wang Jingze Liu Ministry of Education Key Laboratory of Molecular and Cellular Biology Hebei Key Laboratory of Animal PhysiologyBiochemistry and Molecular BiologyCollege of Life SciencesHebei Normal UniversityShijiazhuangChina Instrumental Analysis Center Hebei Normal UniversityShjiazhuangChina Hebei Xiaowutai Mountain National Nature Reserve Management Center ZhangjiakouHebei ProvinceChina

Ticks are external parasitic arthropods that can transmit a variety of pathogens by sucking ***-temperature tolerance is essential for ticks to survive during the cold *** the protein regulation mechanism of low-temperature tolerance of Haemaphysalis longicornis could help to explain how ticks survive in *** this study,the quantitative proteomics of several tissues of *** exposed to low temperature were studied by data independent acquisition *** of 3699,3422,and 1958 proteins were identified in the salivary gland,midgut,and ovary,*** proteins involved in energy metabolism,cell signal transduction,protein synthesis and repair,and cytoskeleton synthesis changed under low-temperature *** comprehensive analysis of the protein regulation of multiple tissues of female ticks exposed to low temperature showed that maintaining cell homeostasis,maintaining cell viability,and enhancing cell tolerance were the most important means for ticks to maintain vital signs under low *** expression of proteins involved in and regulating the above cell activities was the key to the survival of ticks under low *** the analysis of a large amount of data,we found that the expression levels of arylamine N-acetyltransferase,inositol polyphosphate multikinase,and dual-specificity phosphatase were up-regulated under low *** speculated that they might have important significance in low-temperature ***,we performed RNA interference on the mRNA of these 3 proteins,and the results showed that the ability of female ticks to tolerate low temperatures decreased significantly.

关键词： low-temperature tolerance protein regulation tick survival strategy

Research on actuator distribution and panels for a radio telescope

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2021年第7期21卷 31-36页

作者： Jin-Qing wang Zheng-Xiong Sun Li Fu Jin-ling Li Lin-Feng Yu Yong-Chen Jiang Yong-Bin Jiang Wei Gou Wei Hu Rong-Bin Zhao Qin-hui Liu Zhi-Qiang Shen Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China Key Laboratory of Radio Astronomy Chinese Academy of SciencesNanjing 210008China Shanghai Key Laboratory of Space Navigation and Positioning Techniques Shanghai 430074China University of Shanghai for Science and Technology Shanghai 200093China

Trying to achieve the best surface accuracy control with the fewest actuators, this article mainly studies the distribution of actuators and the method of panel design. The influence of the number of faulty actuators on the accuracy of the surface shape is demonstrated. In addition, the method incorporating a triangular panel, node index and the fitting solution method of a single panel is also given. This method provides a reference for the design and realization of an active surface or a deformable sub-reflector for high performance large aperture radio telescopes.

关键词： radio telescope triangle panel method design