检索结果-南通市图书馆

Achieving superior performance in powder-metallurgy near-βtitanium alloy by combining hot rolling and rapid heat treatment followed by aging

引用

Journal of Materials Science & Technology 2024年第4期171卷 24-36页

作者： Fucheng Qiu Tuo Cheng Yuchao Song Orest M.Ivasishin Dmytro G.Savvakin Guangyu Ma huiyan xu College of Materials Science and Engineering Jilin UniversityChangchun 130025China International Center of Future Science Jilin UniversityChangchun 130025China G.V.Kurdyumov Institute for Metal Physics KyivUkraine College of Biological and Agricultural Jilin UniversityChangchun 130025China

Heat treatment plays an important role in tailoring the mechanical properties of powder-metallurgy(PM)titanium ***,only limited work about the rapid heat treatment(RHT)of PM titanium alloys has been *** this work,RHT was applied to PM Ti-5Al-5Mo-5V-1Cr-1Fe alloy after hot rolling to study the evolution of its mechanical properties and the influence of residual pores on its *** hot rolling and annealing,a fine and uniformα+βstructure with few residual pores is *** RHT,the primaryαdissolves gradually and completes in theβregion,and theβgrains then grow,resulting in the continuous decrease in elongation after ***,the tensile strength first increases and then decreases with increasing RHT temperature,owing to the increase in volume fraction of secondaryαinα+βregion and theβgrain growth inβ*** contrast to the RHT of cast-and-wrought titanium,the negative influence of residual pores lowers the RHT temperature for obtaining the highest tensile strength to a temperature below theβ-transus *** the negative influence of the residual pores,retained primaryαand fineβgrains with fine secondaryαinside contribute to achieving a good strength/ductility balance(1570 MPa and 6.1%,respectively).Addi-tionally,although at higher cycles to failure,the negative influence of residual pores increases as it affects the crack initiation zone at the subsurface,the good resistance of secondaryαto fatigue crack propaga-tion still enhances the fatigue strength considerably(about 300 MPa).This work suggests a cost-effective strategy to produce titanium alloys with high performance.

关键词： Rapid heat treatment Powder metallurgy Mechanical properties Near-βtitanium Residual pores

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

3~6岁儿童同胞关系的异质性及其影响因素:基于潜在剖面分析

引用

心理与行为研究 2024年第3期22卷 346-353页

作者：徐慧艳王小英绍兴文理学院大脑、心智与教育研究中心绍兴312000 东北师范大学教育学部长春130024

运用潜在剖面分析探索3~6岁儿童同胞关系的不同特征模式,并且进一步探讨个体心理理论与亲子关系对儿童早期同胞关系类型的影响。采用同胞行为量表、社会理解量表、亲子关系量表对1410名二孩家庭的3~6岁儿童进行调查,结果发现:(1)儿童同... 详细信息

运用潜在剖面分析探索3~6岁儿童同胞关系的不同特征模式,并且进一步探讨个体心理理论与亲子关系对儿童早期同胞关系类型的影响。采用同胞行为量表、社会理解量表、亲子关系量表对1410名二孩家庭的3~6岁儿童进行调查,结果发现:(1)儿童同胞关系可以分为磨合成长型(48.94%)、相对和谐型(47.09%)和矛盾冲突型(3.97%)三种类型;(2)儿童个体心理理论以及亲子关系亲密性越高,亲子关系冲突性越低,其同胞关系类型更倾向归属于相对和谐型。

关键词：同胞关系心理理论亲子关系潜在剖面分析 3~6 岁儿童

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

Impacts of cloud radiative processes on the convective and stratiform rainfall associated with Typhoon Fitow(2013)

引用

Frontiers of Earth Science 2022年第4期16卷 1052-1060页

作者： huiyan xu Dengrong ZHANG Zhejiang Provincial Key Laboratory of Urban Wetlands and Regional Change Hangzhou Normal UniversityHangzhou 311121China

The three-dimensional Weather Research and Forecasting(WRF)model was used to conduct sensitivity experiments during the landfall of Typhoon Fitow(2013)to examine the impacts of cloud radiative processes on thermal *** vertical profiles of heat budgets,vertical velocity,and stability were analyzed to examine the physical processes responsible for cloud radiative effects on surface rainfall for Typhoon Fitow(2013).The inclusion of clouds reduced radiative cooling in ice and liquid cloud layers by reducing outgoing *** suppressed radiative cooling reduced from the ice cloud layers to liquid cloud *** was conducive to reducing *** decreased instability was associated with the reduced upward *** reduced upward motion led to a decreased vertical mass ***,heat divergence was weakened to warm the *** with suppressed radiative cooling,these effects jointly suppressed net condensation and ***,the reduced rainfall due to the cloud radiative effects were mainly associated with the reduced convective and stratiform *** reduced convective rainfall was associated with the reduced net condensation,while the reduced stratiform rainfall was related to the constraint of hydrometeor convergence.

关键词： heat budget radiative cooling heat divergence latent heat release typhoon

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

Predecessor Rain Events in the Yangtze River Delta Region Associated with South China Sea and Northwest Pacific Ocean(SCS-WNPO)Tropical Cyclones

引用

Advances in Atmospheric Sciences 2023年第6期40卷 1021-1042页

作者： huiyan xu Xiaofan LI Jinfang YIN Dengrong ZHANG Zhejiang Provincial Key Laboratory of Urban Wetlands and Regional Change School of Information Science and TechnologyHangzhou Normal UniversityHangzhou 311121China Key Laboratory of Geoscience Big Data and Deep Resource of Zhejiang Province School of Earth SciencesZhejiang UniversityHangzhou 310027China State Key Laboratory of Severe Weather(LaSW) Chinese Academy of Meteorological Sciences(CAMS)Beijing 100081China

Predecessor rain events(PREs) in the Yangtze River Delta(YRD) region associated with the South China Sea and Northwest Pacific Ocean(SCS-WNPO) tropical cyclones(TCs) are investigated during the period from 2010 to *** indicate that approximately 10% of TCs making landfall in China produce PREs over the YRD region;however,they are seldom forecasted. PREs often occur over the YRD region when TCs begin to be active in the SCS-WNPO with westward paths, whilst the cold air is still existing or beginning to be present. PREs are more likely to peak in June and September. The distances between the PRE centers and the parent TC range from 900 to 1700 km. The median value of rain amounts and the median lifetime of PREs is approximately 200 mm and 24 h, respectively. Composite results suggest that PREs form in the equatorward jet-entrance region of the upper-level westerly jet(WJ), where a 925-hPa equivalent potential temperature ridge is located east of a 500-hPa trough. Deep moisture is transported from the TC vicinity to the remote PREs region. The ascent of this deep moist air in front of the 500-hPa trough and frontogenesis beneath the equatorward entrance region of the WJ is advantageous for the occurrence of PREs in the YRD region. The upper-level WJ may be affected by the subtropical high and westerly trough in the Northwest Pacific Ocean, and the occurrence of PREs may favor the maintenance of the upper-level WJ. The upper-level outflow of TCs in the SCS plays a secondary role.

关键词： tropical cyclone heavy rain westerly trough upper-level jet stream

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

虚拟仿真和产教研融合建设“动物繁殖学教学实习课程”思政教学实践研究

引用

黑龙江动物繁殖 2024年第1期32卷 67-71页

作者：许惠艳陆阳清广西大学动物科学技术学院广西南宁530004

“动物繁殖学教学实习”是动物科学的专业必修课,课程教学目的是使学生能够掌握一定的现代动物繁殖技术,培养服务于畜牧业生产及相关科学研究的创新型人才。广西大学动物繁殖学教学团队结合自身学科发展和课程特点深入挖掘思政元素,开... 详细信息

“动物繁殖学教学实习”是动物科学的专业必修课,课程教学目的是使学生能够掌握一定的现代动物繁殖技术,培养服务于畜牧业生产及相关科学研究的创新型人才。广西大学动物繁殖学教学团队结合自身学科发展和课程特点深入挖掘思政元素,开展教育教学方法创新改革,将课程思政和育人元素融入教学,培养畜牧业高质量发展所需人才。本课程教学以立德树人为根本,建设虚拟仿真教学资源,进行课前、课中、课后的思政融合,虚拟仿真与传统课程融合,产学研融合的思政教学模式,建立课程思政的考评机制等实践策略,实施课程思政建设和改革,提升学生专业认同感,增强服务“三农”的责任和担当。

关键词：动物繁殖学教学实习课程思政虚拟仿真产教研融合

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

Drug discovery in China:A snapshot of recent progress

引用

Acta Pharmaceutica Sinica B 2022年第11期12卷 4266-4269页

作者： Hongxi Hu Cuicui Xie huiyan xu Liyun Zhou Pharmcube(Beijing)Co. Ltd.Beijing 100020China

Intensive policy reforms in China’s pharmaceutical industry have provided strong support for the shift from generic to innovative drug R&D, and the influx of huge amounts of capitals has provided ample momentum for the development of the pharmaceutical industry. Since this year, the international situation has been severe and complicated, with the recurrence of the pandemic, and the development of China’s pharmaceutical industry has inevitably been affected.

关键词： policy industry innovative

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

Analysis of new drug registration and review in China in 2021

引用

Acta Pharmaceutica Sinica B 2022年第4期12卷 2127-2128页

作者： Hongxi Hu Xiaotong Lu huiyan xu Liyun Zhou Pharmcube(Beijing)Co. Ltd.Beijing 100020China

In recent years,China's pharmaceutical industry has undergone tremendous *** reform of pharmaceutical policies has led to a shift in the direction of drug research and development from generic to innovative,and the sustainable investment from the capital market into the pharmaceutical industry and the return of overseas pharmaceutical talents have together created a boom in drug research and development in China today.

关键词： investment return industry

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

糖萼参与肾脏纤维化的机制

引用

肾脏病与透析肾移植杂志 2024年第3期33卷 254-258页

作者：邢铭辉许卉妍(综述) 李文斌(审校) 山东第二医科大学潍坊261053 山东第一医科大学第一附属医院(山东省千佛山医院)肾病学科

肾脏纤维化是慢性肾脏病(CKD)进展至终末期肾病的共同病理特征,明确肾脏纤维化发生的分子机制对CKD的防治至关重要。内皮细胞表层的多糖蛋白复合物——糖萼组成了血液和血管壁之间最基本的屏障。最新研究显示,糖萼在肾脏纤维化过程中发... 详细信息

肾脏纤维化是慢性肾脏病(CKD)进展至终末期肾病的共同病理特征,明确肾脏纤维化发生的分子机制对CKD的防治至关重要。内皮细胞表层的多糖蛋白复合物——糖萼组成了血液和血管壁之间最基本的屏障。最新研究显示,糖萼在肾脏纤维化过程中发挥重要作用。本文就糖萼参与肾脏纤维化发生的相关研究进展作一综述,为其防治提供新的治疗策略。

关键词：慢性肾脏病肾脏纤维化糖萼

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

The evolving treatment paradigm of lung cancer in China

引用

Acta Pharmaceutica Sinica B 2022年第3期12卷 1536-1537页

作者： Wei Xie Shuanghuan Liu Guanqiao Li huiyan xu Liyun Zhou Pharmcube(Beijing)Co. Ltd.Beijing 100020China National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China Tsinghua Clinical Research Institute(TCRI) School of MedicineTsinghua UniversityBeijing 100089China

Lung cancer is the leading cause of cancer death in ***,65%-70%of lung cancer patients are already at an advanced,inoperable stage at ***,there has been a surge in drug development to address the unmet medical needs of lung *** recent years,benefiting from the precise molecular classification of lung cancer,the number of clinical trials testing drugs in lung cancer has increased rapidly in China,enhancing R&D capacities and the impactful regulatory *** thus has led to significant improvements in drug accessibility.

关键词： lung cancer drugs

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

Electrolyte Strategies Toward Optimizing Zn Anode for Zinc-Ion Batteries

引用

Transactions of Tianjin University 2023年第6期29卷 407-431页

作者： Zenglong xu huiyan xu Jinfeng Sun Jieqiang Wang Degang Zhao Bingqiang Cao Xiutong Wang Shuhua Yang Materials Center for Energy and Photoelectrochemical Conversion School of Material Science and EngineeringUniversity of JinanJinan 250022China Institute for Smart Materials and Engineering University of JinanJinan 250022China Key Laboratory of Marine Environmental Corrosion and Bio-fouling Institute of Oceanology and Center for Ocean Mega-ScienceChinese Academy of SciencesQingdao 266071China

Zinc-ion batteries(ZIBs)with low cost and high safety have become potential candidates for large-scale energy ***,the knotty Zn anode issues such as dendritic growth,hydrogen evolution reaction(HER)and corrosion and passivation are still unavoidable,which greatly limits the wide applications of *** states and additives of electrolytes are closely related to these ***,there is a lack of systematic understanding and discussion about the intrinsic connection between the states and additives of electrolyte and Zn anode *** this review,the basic principles of dendritic growth,HER and corrosion and passivation are fi rstly introduced,and then,electrolyte optimization strategies with the corresponding electrochemical properties are systematically *** particular,the action mechanism of electrolyte additives and the electrolyte states for Zn anode optimization is analyzed in ***,some unique views on the improvement of electrolyte for Zn anode optimization are put forward,which is expected to provide a certain professional reference for designing high-performance ZIBs.

关键词： Zinc-ion batteries Zn anode Electrolyte Additives

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：