检索结果-南通市图书馆

Towards creep property improvement of selective laser melted Ni-based superalloy IN738LC

journal of Materials Science & Technology 2022年第17期112卷 301-314页

作者： H.Y.Song M.C.Lam Y.Chen S.Wu P.D.Hodgson X.H.Wu Y.M.Zhu A.j.huang Monash Centre for Additive Manufacturing 15-17 Normanby RdNotting HillVIC 3168Australia Department for of Materials Science and Engineering Monash UniversityClaytonVIC 3800Australia Monash Centre for Electron Microscopy 10 Innovation WalkClaytonVIC 3800Australia Institute for Frontier Materials Deakin UniversityVIC 3216Australia

Nickel-based superalloy IN738LC produced by selective laser melting(SLM)exhibits inferior hightemperature creep properties than its cast counterparts due to relatively smaller grain size,particularly for the plane normal to the building *** work studied effects of post heating strategy on the microstructure and especially the grain size to improve the high temperature creep *** asbuilt microstructure exhibited a fine grain size and large quantities of MC carbides that could effectively hinder grain *** was found that unconventional two-step heat treatments could lead to substantial grain growth,and the effect is particularly prominent at a specific *** ease of grain growth was explained after classifying the microstructural evolution(boundary carbide transformation)during each heating step and related to the reduced grain boundary pinning force from MC *** tests validated the effect of the new heat treatment scheme on the SLM-processed IN738LC at 850℃.An extended creep fracture life(1.5 to 4 times improvement)and lower secondary creep rates were achieved with samples subjected to the newly optimized two-step heat *** complete creep curves are also firstly presented for SLM-IN738LC,confirming the effectiveness of grain growth and highlighting the importance of dedicated heat treatment for SLM superalloys.

关键词： Selective laser melting IN738LC alloy Creep properties Heat treatments Grain structure

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

Hybrid HMX multi-level assembled under the constraint of 2D materials with efficiently reduced sensitivity and optimized thermal stability

引用

Defence Technology（防务技术） 2024年第9期39卷 123-132页

作者： Xiaomin Song Longjin huang Rufang Peng Qi huang jinjiang Xu jie Sun Institute of Chemical Materials China Academy of Engineering PhysicsMianyang621900China State Key Laboratory of Environment-friendly Energy Materials School of Materials Science and EngineeringSouthwest University of Science and TechnologyMianyang621010China

The interfacial interaction between HMX molecules and coating materials is the key to the safety performance of explosives and has received extensive ***,screening suitable coating agents to enhance the interfacial effect to obtain high-energy and low-sensitivity explosives has long been a major *** this work,HMX-PEI/rGO/g-C_(3)N_(4)(HPrGC)composites were innovatively prepared by a multi-level coating strategy of two-dimensional graphite rGO and g-C_(3)N_(4).The g-C_(3)N_(4) used for desensitization has a richπ-conjugated system and shows outstanding ability in reducing friction *** hierarchical structure of HPrGC formed by electrostatic self-assembly andπ-πstacking can effectively dissipate energy accumulation under heat and mechanical stimulation through structural evolution,thus exhibiting a prominent synergistic desensitization effect on *** results show that rGO/gC_(3)N_(4) coating has no effect on the crystal structure and chemical structure of *** importantly,the perfect combination of g-C_(3)N_(4) and rGO endows HPrGC with enhanced thermal stability and ideal mechanical sensitivity(IS:21 j,FS:216 N).Obviously,the new fabrication of HPrGC enriches the variety of desensitizer materials and helps to deepen the understanding of the interaction between explosives and coatings.

关键词： HMX-PEI/rGO/g-C_(3)N_(4) Electrostatic self-assembly π-πstacking Synergistic desensitization

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

In situ direct reprogramming of astrocytes to neurons via polypyrimidine tract-binding protein 1 knockdown in a mouse model of ischemic stroke

引用

Neural Regeneration Research 2024年第10期19卷 2240-2248页

作者： Meng Yuan Yao Tang Tianwen huang Lining Ke En huang Key Laboratory of Brain Aging and Neurodegenerative Diseases of Fujian Province Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Human Anatomy School of Basic Medical SciencesFujian Medical UniversityFuzhouFujian ProvinceChina Scientific Research Center School of Basic Medical SciencesFujian Medical UniversityFuzhouFujian ProvinceChina Department of Neurology Fujian Medical University Union HospitalFuzhouFujian ProvinceChina Fujian Key Laboratory of Vascular Aging Fujian Medical UniversityFuzhouFujian ProvinceChina

In situ direct reprogramming technology can directly convert endogenous glial cells into functional neurons in vivo for central nervous system repair. Polypyrimidine tract-binding protein 1(PTB) knockdown has been shown to reprogram astrocytes to functional neurons in situ. In this study, we used AAV-PHP.e B-GFAP-sh PTB to knockdown PTB in a mouse model of ischemic stroke induced by endothelin-1, and investigated the effects of GFAP-sh PTB-mediated direct reprogramming to neurons. Our results showed that in the mouse model of ischemic stroke, PTB knockdown effectively reprogrammed GFAP-positive cells to neurons in ischemic foci, restored neural tissue structure, reduced inflammatory response, and improved behavioral function. These findings validate the effectiveness of in situ transdifferentiation of astrocytes, and suggest that the approach may be a promising strategy for stroke treatment.

关键词： astrocyte in situ direct reprogramming ischemic stroke miR-30 based shRNA neuron polypyrimidine tract-binding protein 1 transdifferentiation

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

Addressable structured light system using metasurface optics and an individually addressable VCSEL array

引用

Photonics Research 2024年第6期12卷 1129-1137页

作者： CHENYANG WU XUANLUN huang YIPENG jI TINGYU CHENG jIAXING WANG NAN CHI SHAOHUA YU CONNIE j.CHANG-HASNAIN School of Information Science and Technology Fudan UniversityShanghai 200433China Berxel Photonics Co. Ltd.Shenzhen 518071China Peng Cheng Laboratory Shenzhen 518055China Chinese University of Hong Kong Shenzhen 518172China

Structured-light(SL)based 3D sensors have been widely used in many *** SL is the most widely deployed among all SL sensors due to its light weight,compact size,fast video rate,and low *** transmitter(known as the dot projector)consists of a randomly patterned vertical-cavity surface-emitting laser(VCSEL)array multiplicated by a diffractive optical element(DOE)with a fixed repeated *** that the separation of any two speckles is only one known and fixed number(albeit random),there are no other known scales to cal-ibrate or ***,typical SL sensors require extensive in-factory calibrations,and the depth resolution is limited to 1 mm at-60 cm *** this paper,to the best of our knowledge,we propose a novel dot projector and a new addressable SL(ASL)3D sensor by using a regularly spaced,individually addressable VCSEL array,multiplicated by a metasurface-DOE(MDOE)into a random pattern of the *** turning on or off the VCSELs in the array provides multiple known distances between neighboring speckles,which is used as a“built-in caliper”to achieve higher accuracy of *** as a precise“vernier caliper,”the addressable VCSEL array enables fine control over speckle positions and high detection *** experimentally dem-onstrated that the proposed method can result in sub-hundred-micron level *** new concept opens new possibilities for applications such as 3D computation,facial recognition,and wearable devices.

关键词： speckle light surface

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

妻子的手

引用

中国翻译 2008年第2期29卷 90-93页

作者：高维晞 Harry j.huang

我又伏案奋笔疾书了。决心已定，我要用生命的泉水，培育好散文这朵俊美的花儿。我把它当诗来写，工作之余，总是起早带晚，饱蘸满腔热血，不停地挥笔涂抹!

关键词：汉译英汉语英语参考译文

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 THERMOSTATIC POWER IN OVEN-CONTROLLED QUARTZ CRYSTAL OSCILLATORS

ANALYSIS OF THERMOSTATIC POWER IN OVEN-CONTROLLED QUARTZ CRY...

引用

2016年全国压电和声波理论及器件应用研讨会

作者： Chien-cheng YANG Zi-gui huang W-j huang jhe-wei LI Taitien Electronics Co. Ltd. Department of Mechanical Design Engineering National Formosa University

Background, Motivation and Objective An oven-controlled crystal oscillator(OCXO) uses thermostatic regulation to stabilize the output frequency by maintaining the temperature of the quartz crystal oscillator at a fixed level. The OCXO is heated by a chip which holds the temperature of the device at a working level of between 80 and 105°C to stabilize the output frequency. In this study, the finite element analysis was used to simulate heating of the OCXO element. The heating temperature vs time change, when heat is transferred to the quartz crystal, and the quartz crystal thermostatic time variation vs the quartz temperature distribution, were both investigated. The results were compared by simulation of the behavior of the quartz oscillator in a nitrogen and helium environment and also under vacuum. Statement of Contribution/Methods In this paper, we used finite element analysis to simulate the steady state thermostatic power and observed conditions after heating was stopped within the working range, to determine power loss. We also compare simulations of the behavior of a quartz crystal oscillator with respect to temperature fluctuation when it was operated in vacuum, or in the presence of nitrogen or helium. Results Oven control of quartz crystal oscillators keeps the ambient temperature of quartz crystal and the quartz crystal temperature within a set working temperature range. In this study stimulation of the time taken to heat crystal to working temperature and the temperature distribution in vacuum and in nitrogen and helium were carried out. The analytical results showed not significant differences between the behavior when the oscillator chamber was under vacuum or filled with nitrogen. However, the overall temperature of the quartz crystal in the chamber under vacuum was slightly higher. In the mid temperature range, the quartz crystal in the chamber filled with helium showed a temperature difference of about 0.01°C compared to one in a chamber filled with

关键词： Oven-controlled crystal oscillator Heat conduction Finite element model

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

The Ame2020 atomic mass evaluation(II).Tables,graphs and references

引用

Chinese Physics C 2021年第3期45卷 523-1034页

作者： Meng Wang W.j.huang F.G.Kondev G.Audi S.Naimi Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100084China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516003China Max-Planck-Institut fur Kernphysik Saupfercheckweg 169117 HeidelbergGermany Universite Paris-Saclay CNRS/IN2P3IJCLab91405 OrsayFrance Physics Division Argonne National LaboratoryLemontIL 60439USA RIKEN Nishina Center WakoSaitama 351-0198Japan

This is the second part of the new evaluation of atomic masses,*** least-squares adjustments to all evaluated and accepted experimental data,described in Part I,we derived tables with numerical values and graphs which supersede those given in *** first table presents the recommended atomic mass values and their *** is followed by a table of the influences of data on primary nuclides,a table of various reaction and decay energies,and finally,a series of graphs of separation and decay *** last section of this paper provides all input data references that were used in the Ame2020 and the Nubase2020 evaluations.

关键词： atomic mass evaluation atomic mass table separation and reaction energies trends from the mass surface

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

汉译英原文:女票

引用

中国翻译 2007年第1期28卷 86-88页

作者：孙方友 Harry j.huang

他灵巧地玩弄着一枝枪。玩够后，掏出一粒花生米大小的子弹，在口里含了含，对着阳光照了照，然后在掌心中撂了个高又稳稳地接住，说：这回就要看你的运气了!

关键词：《女票》中国当代短篇小说孙方友

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

Management of gestational diabetes mellitus via nutritional interventions:The relevance of gastric emptying

引用

World journal of Diabetes 2024年第7期15卷 1394-1397页

作者： Wei-Kun huang Ryan j jalleh Christopher K Rayner Tong-Zhi Wu Adelaide Medical School and Centre of Research Excellence in Translating Nutritional Science to Good Health The University of AdelaideAdelaide 5000Australia Adelaide Medical School and Centre of Research Excellence in Translating Nutritional Science to Good Health The University of Adelaide and Department of Gastroenterology and HepatologyRoyal Adelaide HospitalAdelaide 5000Australia

Gestational diabetes mellitus(GDM)represents one of the most common medical complications of pregnancy and is important to the well-being of both mothers and offspring in the short and long *** intervention remains the mainstay for the management of *** efficacy of nutritional approaches(*** restriction and small frequent meals)to improving the maternal-neonatal outcomes of GDM was attested to by Chinese population data,discussed in two articles in recent issues of this ***,a specific focus on the relevance of postprandial glycaemic control was *** rather than fasting hyperglycaemia often represents the predominant manifestation of disordered glucose homeostasis in Chinese women with *** is now increasing appreciation that the rate of gastric emptying,which controls the delivery of nutrients for digestion and absorption in the small intestine,is a key determinant of postprandial glycaemia in both health,type 1 and 2 *** remains to be established whether gastric emptying is abnormally rapid in GDM,particularly among Chinese women,thus contributing to a predisposition to postprandial hyperglycaemia,and if so,how this influences the therapeutic response to nutritional *** is essential that we understand the role of gastric emptying in the regulation of postprandial glycaemia during pregnancy and the potential for its modulation by nutritional strategies in order to improve postprandial glycaemic control in GDM.

关键词： Gastric emptying Postprandial glycaemia Diet Nutritional interventions Gestational diabetes mellitus

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

Fluid/melt in continental deep subduction zones: Compositions and related geochemical fractionations

引用

Science China Earth Sciences 2015年第8期58卷 1457-1476页

作者： XIAO YiLin SUN He GU HaiOu huang jian LI WangYe LIU Lei CAS Key Laboratory of Crust-Mantle Materials and Environments School of Earth and Space Sciences University of Science and Technology of China

Plate subduction is the most magnificent process in the Earth. Subduction zones are important sites for proceeding matter- and energy- transports between the Earth's surface and the interior, continental crust growth, and crust-mantle interactions. Besides, a number of geological processes in subduction zones are closely related to human beings' daily life, such as volcanic eruptions and earthquakes, formation of mineral deposits. Subduction process thus has long been the centric topic of Earth sciences. The finding in 1980 s that continental crust could be subducted to mantle depths is a revolutionary progress in plate tectonic theory. Compared to oceanic crust, continental crust is colder, drier, lighter, and much more geochemically/isotopically heterogeneous. Hence, continental subduction process would affect the structure, compositions and evolutions of the overlying mantle wedge even more. During continental subduction and subsequent exhumation, fluids and melts can be generated in the(de)hydration process and partial melting process, respectively. These melts/fluids play important roles in crust-mantle interactions, elemental migrations, isotopic fractionations, and mantle metasomatism. By summarizing recent research works on subduction zones in this paper, we present a review on the types, physicochemical conditions and compositions of fluids/melts, as well as the migration behaviors of fluid-related characteristic elements(Nb-Ta-V) and the fractionation behaviors of non-traditional stable isotopes(Li-Mg) in subduction zones. The aim of this paper is to provide the readers an update comprehensive overview of the melt/fluid activities in subduction zones and of Li-Mg isotope systematics in subduction-related rocks and minerals.

关键词： subduction process melt/fluid composition crust-mantle interaction elemental mobility isotopic fractionation

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：