检索结果-南通市图书馆

Multi-objective optimization of different dome reinforcement methods for composite cases

Chinese Journal of Aeronautics 2023年第4期36卷 299-314页

作者： Lei ZU Hui XU Shijun CHEN Jingxuan HE Qian ZHANG Ping REN Guiming ZHANG liqiang wang Qiaoguo WU Jianhui FU School of Mechanical Engineering Hefei University of TechnologyHefei 230000China Anhui Province Key Laboratory of Aerospace Structural Parts Forming Technology and Equipment Hefei University of TechnologyHefei 230009China Xi’an Institute of Aerospace Propulsion Technology Xi’an 710025China The 41st Institute of the Fourth Academy of CSAC National Key Lab of Combustion Flow and Thermo-structureXi’an 710025China College of Civil Engineering Hefei University of TechnologyHefei 230000China

A multi-objective optimization method was proposed for different dome reinforcement methods of a filament-wound solid rocket motor composite case based on a Radial Basis Function(RBF)*** damage of the composite case was considered in a simulation based on Hashin failure criteria,and simulation results were validated by hydraulic burst tests to precisely predict the failure mode,failure position,and burst *** RBF surrogate model was estab-lished and evaluated by Relative Average Absolute Error(RAAE),Relative Maximum Absolute Error(RMAE),Root Mean Squared Error(RMSE),and R^(2)methods to improve the optimization efficient of dome *** addition,the Non-dominated Sorting Genetic Algorithm(NSGA-II)was employed to establish multi-objective optimization models of variable-angle and variable-polar-radius dome reinforcements to investigate the coupling effect of the reinforcement angle,reinforcement layers,and reinforcement range on the case *** reinforce-ment parameters were obtained and used to establish a progressive damage model of the composite case with dome *** accordance with progressive damage analysis,the burst pressure and performance factor were *** illustrated that variable-angle dome reinforcement was the optimal reinforcement method compared with variable-polar-radius dome reinforcement as it could not only ensure the reinforcement angle’s continuous changing but also decrease the mass of composite *** with the unreinforced case,the reinforced case exhibited an increase in the burst pressure and performance factor of 36.1%and 23.5%,respectively.

关键词： Carbon fibers Damage mechanics Failure Filament winding Mechanical properties

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

Double crosslinked biomimetic composite hydrogels containing topographical cues and WAY-316606 induce neural tissue regeneration and functional recovery after spinal cord injury

引用

Bioactive Materials 2023年第6期24卷 331-345页

作者： Xingchang Zhao Xianzhe Lu Kai Li Shiqiang Song Zhaohui Luo Chuanchuan Zheng Chengliang Yang Xiumei wang liqiang wang Yujin Tang Chong wang Jia Liu Department of Orthopaedics Affiliated Hospital of Youjiang Medical University for NationalitiesBaiseGuangxiChina Guangxi Key Laboratory of Basic and Translational Research of Bone and Joint Degenerative Diseases Guangxi Biomedical Materials Engineering Research Center for Bone and Joint Degenerative DiseasesBaiseGuangxiChina Academy of Orthopedics Guangdong ProvinceGuangdong Provincial Key Laboratory of Bone and Joint Degeneration DiseasesThe Third Affiliated Hospital of Southern Medical UniversityGuangzhouChina Youjiang Medical University for Nationalities BaiseGuangxiChina School of Mechanical Engineering Dongguan University of TechnologySongshan LakeDongguanGuangdongChina State Key Laboratory of New Ceramics and Fine Processing Key Laboratory of Advanced Materials of Ministry of EducationSchool of Materials Science and EngineeringTsinghua UniversityBeijingChina State Key Laboratory of Metal Matrix Composites School of Material Science and EngineeringShanghai Jiao Tong UniversityShanghaiChina

Spinal cord injury(SCI)is an overwhelming and incurable disabling condition,for which increasing forms of multifunctional biomaterials are being tested,but with limited *** promising material should be able to fill SCI-induced cavities and direct the growth of new neurons,with effective drug loading to improve the local micro-organism environment and promote neural tissue *** this study,a double crosslinked biomimetic composite hydrogel comprised of acellularized spinal cord matrix(ASCM)and gelatin-acrylated-β-cyclodextrin-polyethene glycol diacrylate(designated G-CD-PEGDA)hydrogel,loaded with WAY-316606 to activate canonical Wnt/β-catenin signaling,and reinforced by a bundle of three-dimensionally printed aligned polycaprolactone(PCL)microfibers,was *** G-CD-PEGDA component endowed the composite hydrogel with a dynamic structure with a self-healing capability which enabled cell migration,while the ASCM component promoted neural cell affinity and *** diffusion of WAY-316606 could recruit endogenous neural stem cells and improve neuronal *** aligned PCL microfibers guided neurite elongation in the longitudinal *** behavior studies further showed that the composite hydrogel could significantly recover the motor function of rats after *** study provides a proficient approach to produce a multifunctional system with desirable physiological,chemical,and topographical cues for treating patients with SCI.

关键词： Spinal cord injury 3D printing PCL oriented fibers WAY-316606 Wnt/β-catenin signaling

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

Petrogenesis, oxidation state and volatile content of Dongga tonalite in the Gangdese belt, Xizang: Implication for porphyry Cu mineralization

引用

Acta Geochimica 2024年第2期43卷 280-295页

作者： liqiang Zhang Xilian Chen Shaohao Zou Deru Xu Xuena wang Hua wang State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013China School of Earth Sciences East China University of TechnologyNanchang 330013China

The Gangdese belt in Xizang has experienced both Jurassic subduction and Cenozoic continental collision processes, making it a globally renowned region for magmatic rocks and porphyry copper deposits. Numerous Jurassic intrusions have been identified in the belt. Apart from the quartz diorite porphyry in the large Xietongmen deposit, the Cu mineralization potential of other Jurassic intrusions in this belt remains unclear. This study presents zircon U–Pb dating and trace elements, apatite major and trace elements as well as published whole-rock geochemical and isotopic data of the Dongga tonalite in the central part of the Gangdese belt, aiming to reveal the petrogenesis, oxidation state, volatile content, and Cu mineralization potential of this intrusion. The Dongga tonalite has a zircon U–Pb age of 179.4 ± 0.9 Ma. It exhibits high whole-rock V/Sc values(8.76–14.6), relatively low apatite CeN/CeN*ratios(1.04–1.28), elevated zircon(Eu/Eu*)Nvalues(an average of 0.44), high Ce4+/Ce3+values(205–1896), and high ?FMQ values(1.3–3.7), collectively suggesting a high magmatic oxygen fugacity. The Dongga tonalite features amphibole phenocrysts, relatively high whole-rock Sr/Y ratios(20.3–58.9), and lower zircon Ti temperatures (502–740 ℃), reflecting a high magmatic water content. Estimation of magmatic sulfur content(0.002–0.024 wt%) based on apatite SO3contents indicates an enriched magma sulfur content. Combined with previous studies and the collected Sr–Nd–Hf isotopes, the Dongga tonalite is derived from juvenile lower crust related with subduction of the Neo-Tethys oceanic slab. When compared with Xietongmen orebearing porphyries, the Dongga tonalite exhibits remarkable similarities with the Xietongmen ore-bearing porphyries in terms of magma source, tectonic background, magmatic redox state, and volatile components, which indicates that the Dongga tonalite has a high porphyry Cu mineralization potential, and therefore, provides important guidance for the future mineral

关键词： Tonalite Zircon Apatite Mineralization potential Dongga area Gangdese belt

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

Progress on Transition Metal Ions Dissolution Suppression Strategies in Prussian Blue Analogs for Aqueous Sodium-/Potassium-Ion Batteries

引用

Nano-Micro Letters 2024年第7期16卷 142-168页

作者： Wenli Shu Junxian Li Guangwan Zhang Jiashen Meng Xuanpeng wang liqiang Mai Department of Physical Science and Technology School of ScienceWuhan University of TechnologyWuhan 430070People’s Republic of China School of Materials Science and Engineering State Key Laboratory of Advanced Technology for Materials SynthesisWuhan University of TechnologyWuhan 430070People’s Republic of China Sanya Science and Education Innovation Park Wuhan University of TechnologySanya 572000People’s Republic of China Hubei Longzhong Laboratory Wuhan University of TechnologyXiangyang Demonstration ZoneXiangyang 441000People’s Republic of China

Aqueous sodium-ion batteries(ASIBs)and aqueous potassium-ion batteries(APIBs)present significant potential for large-scale energy storage due to their cost-effectiveness,safety,and environmental ***,the intricate energy storage mechanisms in aqueous electrolytes place stringent require-ments on the host *** blue analogs(PBAs),with their open three-dimensional framework and facile synthesis,stand out as leading candidates for aqueous energy ***,PBAs possess a swift capacity fade and limited cycle longevity,for their structural integrity is compromised by the pronounced dis-solution of transition metal(TM)ions in the aqueous *** manuscript provides an exhaustive review of the recent advancements concerning PBAs in ASIBs and *** dissolution mechanisms of TM ions in PBAs,informed by their structural attributes and redox processes,are thoroughly ***,this study delves into innovative design tactics to alleviate the dissolution issue of TM *** conclusion,the paper consolidates various strategies for suppressing the dissolution of TM ions in PBAs and posits avenues for prospective exploration of high-safety aqueous sodium-/potassium-ion batteries.

关键词： Prussian blue analogs Transition metal ions dissolution Suppression strategies Aqueous sodium-ion batteries Aqueous potassium-ion batteries

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

基于XML的勘查技术方法标准数字化研究探讨——以《大地电磁测深法技术规程(DZ/T 0173-2022)》为例

引用

华北地质 2024年第2期47卷 80-88页

作者：王家松袁桂琴张国利刘继红王力强郑智慷中国地质调查局天津地质调查中心(华北地质科技创新中心) 天津300170 中国地质科学院地球物理地球化学勘查研究所天津065000

【研究目的】作为地质行业发展的重要技术保障,勘查技术方法标准的精细化和综合化的发展趋势在客观上迫切需要加快存量标准的数字化,以满足标准技术内容的快速检索、分析、比对、拆分与重构等诸多需求。【研究方法】以勘查技术方法标准... 详细信息

【研究目的】作为地质行业发展的重要技术保障,勘查技术方法标准的精细化和综合化的发展趋势在客观上迫切需要加快存量标准的数字化,以满足标准技术内容的快速检索、分析、比对、拆分与重构等诸多需求。【研究方法】以勘查技术方法标准体系中占比最大、结构趋同的规程类型标准《大地电磁测深法技术规程(DZ/T 0173-2022)》为例,参照国家标准结构化置标框架,采用可扩展标记语言XML对其进行结构化。【研究结果】建立了勘查技术规程类型标准要素与结构化框架的对应关系,基于XML实现了勘查技术方法标准的基本信息、辅助信息、术语信息和主体内容等模块的结构化描述,提出了结构化框架存在要素缺失、结构化描述维度单一、结构化模块颗粒度较粗等不足。【结论】勘查技术方法标准数字化研究应加强开展不同功能类型标准结构元模型、元素集、内容模板和样式表等方面研究,实现全要素、多维度、细颗粒的标准内容结构化,为实现勘查技术方法标准机器可读、可解析奠定坚实基础。

关键词：勘查技术方法标准标准数字化标准结构化可扩展标记语言

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

GSDMD与骨质疏松症中成骨细胞的相关性研究进展

引用

中国骨质疏松杂志 2024年第7期30卷 1028-1032,1055页

作者：麻永胜王立强蒋宜伟周玉英马晨光宋重东刘沛马俊飞史达甘肃中医药大学甘肃兰州730000 敦煌医学与转化教育部重点实验室甘肃兰州730000 甘肃中医药大学附属医院甘肃兰州730000 西安市红会医院陕西西安710054

细胞焦亡(Pyroptosis)是伴炎症反应的程序性死亡方式,Gasdermin D(GSDMD)是介导细胞焦亡的关键蛋白,也是主要执行者。当病原微生物等刺激炎性小体后,激活焦亡信号半胱天冬氨酸蛋白酶(caspase),使其切割GSDMD,然后GSDMD的氨基末端(N端)... 详细信息

细胞焦亡(Pyroptosis)是伴炎症反应的程序性死亡方式,Gasdermin D(GSDMD)是介导细胞焦亡的关键蛋白,也是主要执行者。当病原微生物等刺激炎性小体后,激活焦亡信号半胱天冬氨酸蛋白酶(caspase),使其切割GSDMD,然后GSDMD的氨基末端(N端)转移至细胞膜上形成允许水分子等物质进入的细胞内孔隙,从而引起细胞肿胀及裂解,导致细胞死亡,即细胞焦亡。近年来科学研究进展发现,GSDMD可能通过介导成骨细胞焦亡参与了骨代谢疾病特别是骨质疏松症的发病机制,抑制成骨细胞焦亡可调控骨质疏松症的发展。成骨细胞焦亡或许作为一种促炎性调控骨细胞死亡的方式干预骨代谢,而且对其研究是当下新颖的科研热点。笔者从细胞焦亡分析并探讨GSDMD介导成骨细胞焦亡的分子机制,对其与细胞焦亡领域之间的关系进行综述,分析成骨细胞焦亡与骨质疏松疾病之间的联系,为骨质疏松症的研究和诊疗提供关键的靶点蛋白因子机制。

关键词：细胞焦亡 GSDMD 成骨细胞分子机制骨质疏松症

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

关中奶山羊发情期不同时段宫颈阴道粘液非靶向代谢组学比较分析研究

引用

家畜生态学报 2024年第2期45卷 39-46页

作者：冉本康李宇贤明郭松茂王立强孟智利李延华王军宁李芳娥杜烨青胡建宏西北农林科技大学动物科技学院陕西杨凌712100 富平县华拓畜牧科技有限公司陕西富平711700 陕西关中奶山羊专业合作社陕西富平711700 陕西澳尼克奶山羊育种有限公司陕西富平711700

为了揭示关中奶山羊自然发情状态下发情期生殖道代谢特征,探索关中奶山羊发情期特异性化学信号,为精准发情鉴定和适时人工授精等繁殖工作提供代谢机制层面的理论依据,以3只2~3岁经产母羊为研究对象,采集关中奶山羊发情期0~12 h(A组),12~... 详细信息

为了揭示关中奶山羊自然发情状态下发情期生殖道代谢特征,探索关中奶山羊发情期特异性化学信号,为精准发情鉴定和适时人工授精等繁殖工作提供代谢机制层面的理论依据,以3只2~3岁经产母羊为研究对象,采集关中奶山羊发情期0~12 h(A组),12~24 h(B组),24~36 h(C组)的宫颈阴道粘液,采用气相色谱-质谱法(GC-MS)测定关中奶山羊发情期宫颈阴道粘液中的代谢产物。结果显示,来自发情期不同时段的关中奶山羊宫颈阴道粘液中共检出221种不同的代谢产物,其主要分类是碳水化合物、脂质、氨基酸、核苷酸、异生素、辅助因子和维生素、肽类、能量等;0~12 h VS 12~24 h的差异代谢物有6种,12~24 h VS 24~36 h的差异代谢物有3种,0~12 h VS 24~36 h的差异代谢物有14种;这些差异代谢物主要富集在半乳糖代谢、碳水化合物消化吸收、矿物质吸收、甘油酯代谢、ABC蛋白转运、嘧啶代谢等通路上。

关键词：关中奶山羊自然发情发情周期宫颈阴道粘液差异代谢物

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

Continuous Fe^(3+)releasing enabled complete reconstruction of Ni-based MOF for promoted water oxidation in industrial alkali

引用

Science China Chemistry 2024年第9期67卷 2949-2957页

作者： Zhaojian wang Wei Zhang Wenzhong Huang Ruohan Yu Changliang Chen liqiang Mai Liang Zhou State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Sanya Science and Education Innovation Park Wuhan University of TechnologySanya 572000China Hubei Longzhong Laboratory Wuhan University of Technology(Xiangyang Demonstration Zone)Xiangyang 441000China

Most oxygen evolution reaction(OER)electrocatalysts show poor stability under industrial alkaline conditions(20–30 wt.%KOH).Therefore,it is essential to develop stable,efficient,and low-cost OER catalysts for industrial water ***,we present a straightforward approach for the complete electrochemical reconstruction of Ni-BDC,a Ni-based metal-organic framework,for *** method involves the continuous release of Fe^(3+)from Fe foam counter electrode in a high-concentration(6.0 M,25 wt.%)KOH *** continuously Fe^(3+)releasing not only realizes in situ Fe^(3+)doping,but also introduces abundant defects in the obtained catalyst during cyclic voltammetry activation,thereby accelerating the electrochemical *** reconstructed OER catalyst(Fe-doped nickel hydroxide/oxyhydroxide nanosheets supported on Ni foam,Fe-NiO_(x)(OH)y/NF)manifests a low overpotential of 217 mV at 10 mA cm^(-2)and 263 m V at 100 m A cm^(-2)in 1.0 M ***,the Fe-NiO_(x)(OH)_(y)/NF also demonstrates high stability in 30 wt.%*** strategy of regulating the electrochemical reconstruction process sheds light on the construction of stable and efficient OER catalysts for industrial water electrolysis.

关键词： oxygen evolution reaction industrial alkaline conditions metal-organic framework complete reconstruction

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

TLR7/8 signalling affects X-sperm motility via the GSK3α/β-hexokinase pathway for the efficient production of sexed dairy goat embryos

引用

Journal of Animal Science and Biotechnology 2022年第2期13卷 401-417页

作者： Fa Ren Huaming Xi Yijie Ren Yu Li Fei Wen Ming Xian Mengjie Zhao Dawei Zhu liqiang wang Anmin Lei Jianhong Hu Key Laboratory of Animal Genetics Breeding and Reproduction of Shaanxi ProvinceCollege of Animal Science and TechnologyNorthwest A&F UniversityNo.22 Xinong RoadYanglingShaanxi 712100People’s Republic of China College of Veterinary Medicine Northwest A&F UniversityYangling 712100ShaanxiChina

Background:Goat milk is very similar to human milk in terms of its abundant nutrients and ease of *** derive greater economic benefit,farmers require more female offspring(does);however,the buck-to-doe offspring sex ratio is approximately 50%.At present,artificial insemination after the separation of X/Y sperm using flow cytometry is the primary means of controlling the sex of livestock ***,flow cytometry has not been successfully utilised for the separation of X/Y sperm aimed at sexing control in dairy ***:In this study,a novel,simple goat sperm sexing technology that activates the toll-like receptor 7/8(TLR7/8),thereby inhibiting X-sperm motility,was *** results showed that the TLR7/8 coding goat Xchromosome was expressed in approximately 50%of round spermatids in the testis and sperm,as measured from cross-sections of the epididymis and ejaculate,***,TLR7/8 was located at the tail of the *** TLR7/8 activation,phosphorylated forms of glycogen synthase kinaseα/β(GSK3α/β)and nuclear factor kappa-B(NF-κB)were detected in the X-sperm,causing reduced mitochondrial activity,ATP levels,and sperm ***-motility Y-sperm segregated to the upper layer and the low-motility X-sperm,to the lower *** in vitro fertilisation using the TLR7/8-activated sperm from the lower layer,80.52±6.75%of the embryos were XX *** TLR7/8-activated sperm were subsequently used for in vivo embryo production via the superovulatory response;nine embryos were collected from the uterus of two does that *** of these were XX embryos,and one was an XY ***:Our study reveals a novel TLR7/8 signalling mechanism that affects X-sperm motility via the GSK3α/β-hexokinase pathway;this technique could be used to facilitate the efficient production of sexed dairy goat embryos.

关键词： Dairy goat Glycogen synthase kinaseα/β(GSK3α/β) Sexing control Sperm Toll-like receptor 7/8(TLR7/8)

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

Biaxial tensile behavior of CoCrFeNi high-entropy alloy under dynamic and proportional loadings

引用

CHINESE JOURNAL OF AERONAUTICS 2024年第9期37卷 475-489页

作者： Li, Haoyang Gao, liqiang Qi, Lin Feng, Yajing wang, Jingyu Li, Yulong Yu, Qifeng Northwestern Polytech Univ Sch Aeronaut Xian 710072 Peoples R China Northwestern Polytech Univ Shaanxi Key Lab Impact Dynam & Engn Applicat Xian 710072 Peoples R China Northwestern Polytech Univ Sch Civil Aviat Suzhou 215699 Peoples R China NPU Yangzi River Delta Res Inst Suzhou 215400 Peoples R China

The dynamic failure behavior of CoCrFeNi High-Entropy Alloy (HEA) under plane biaxial stress was investigated in detail. The dynamic biaxial tensile tests were conducted using an Electromagnetic Biaxial Split Hopkinson Tensile Bar (EBSHTB) system. For comparison, the quasi-static uniaxial and biaxial tensile tests, as well as dynamic uniaxial tensile tests, were performed respectively. A cruciform specimen suitable for large plastic deformation was designed and employed in the experiments. The Finite Element Method (FEM) verified that the improved cruciform specimen could satisfy the basic requirements. The feasibility of the proposed specimen was further confirmed through loading tests. Finally, the quasi-static and dynamic yield loci of the HEA in the first quadrant of the principal stress space were plotted. The results indicate that the alloy exhibits obvious strain hardening effect and strain rate strengthening effect, the yield locus and plastic work contours can be accurately described by Hill'48 criterion. (c) 2024 Production and hosting by Elsevier Ltd. on behalf of Chinese Society of Aeronautics and Astronautics. This is an open access article under the CC BY-NC-ND license .

关键词： High-entropy alloys Biaxial tensile test Cruciform specimen Electromagnetic split Hop- kinson bar Digital image correlation

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

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：