检索结果-南通市图书馆

Insights into the radial water jet drilling technology-Application in a quarry

Journal of Rock Mechanics and Geotechnical Engineering 2018年第2期10卷 236-248页

作者： Thomas Reinsch Bob Paap simon hahn Volker Wittig Sidney van den Berg GFZ German Research Centre for Geosciences Telegrafenberg14473 PotsdamGermany TNO Sustainable Geo EnergyUtrechtThe Netherlands International Geothermal Centre-GZB Lennershofstr.14044801 BochumGermany Well Services Group Phileas Foggstraat 65NL-7825 AL EmmenThe Netherlands

In this context, we applied the radial water jet drilling(RJD) technology to drill five horizontal holes into a quarry wall of the Gildehaus quarry close to Bad Bntheim, Germany. For testing the state-of-the-art jetting technology, a jetting experiment was performed to investigate the influence of geological heterogeneity on the jetting performance and the hole geometry, the influence of nozzle geometry and jetting pressure on the rate of penetration, and the possibility of localising the jetting nozzle utilizing acoustic activity. It is observed that the jetted holes can intersect fractures under varying angles, and the jetted holes do not follow a straight path when jetting at ambient surface condition. Cuttings from the jetting process retrieved from the holes can be used to estimate the reservoir rock permeability. Within the quarry, we did not observe a change in the rate of penetration due to jetting pressure *** monitoring was partially successful in estimating the nozzle location. Although the experiments were performed at ambient surface conditions, the results can give recommendations for a downhole application in deep wells.

关键词： Acoustic monitoring Drilling performance Trajectory Permeability Rock properties Radial water jet drilling(RJD)

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

Heat shock and other apoptosis-related proteins as therapeutic targets in prostate cancer

引用

Asian Journal of Andrology 2014年第3期16卷 359-363页

作者： Costantine Albany Noah M hahn Indiana University Health Melvin and Bern Simon Cancer Center Indianapolis IN USA.

Defects within apoptotic pathways have been implicated in prostate cancer （PCa） tumorigenesis, metastatic progression and treatment resistance. A hallmark of cancers is the ability to derail apoptosis by inhibiting the apoptotic signal, reducing the expression of apoptotic proteins and/or amplifying survival signals through increased production of antiapoptotic molecule. This review describes associations between heat shock proteins （HSPs） and the human androgen receptor （AR）, the role of HSPs and other stress-induced proteins in PCa development and emerging strategies in targeting these protective proteins to treat PCa.

关键词： apatorsen apoptosis bcl-2 homologous antagonist-killer protein clusterin custirsen ganetespib heat-shock proteins prostatic neoplasms

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

High entropy fluorides as conversion cathodes with tailorable electrochemical performance

引用

Journal of Energy Chemistry 2022年第9期31卷 342-351,I0010页

作者： Yanyan Cui Parvathy Anitha Sukkurji Kai Wang Raheleh Azmi Alexandra MNunn Horst hahn Ben Breitung Yin-Ying Ting Piotr MKowalski Payam Kaghazchi Qingsong Wang simon Schweidler Miriam Botros Institute of Nanotechnology Karlsruhe Institute of Technology(KIT)Hermann-von-Helmholtz-Platz 176344 Eggenstein-LeopoldshafenGermany Institute for Applied Materials±Energy Storage Systems Karlsruhe Institute of Technology(KIT)Hermann-von-Helmholtz-Platz 176344 Eggenstein-LeopoldshafenGermany Faculty of Science University of WaterlooWaterlooON N2L 3G1Canada KIT-TUD-Joint Research Laboratory Nanomaterials Technical University DarmstadtDarmstadt 64287Germany Theory and Computation of Energy Materials(IEK-13) Institute of Energy and Climate ResearchForschungszentrum Jülich GmbH52425 JülichGermany Materials Synthesis and Processing(IEK-1) Institute of Energy and Climate ResearchForschungszentrum Jülich GmbH52425 JülichGermany

With the recent development of high entropy materials, an alternative approach to develop advanced functional materials with distinctive properties that show improved values compared to conventional materials has been provided. The high entropy concept was later successfully transferred to metal fluorides and high entropy fluorides(HEFs) were successfully synthesized. Owing to their high theoretical specific capacities in energy storage applications, HEFs were utilized as cathode materials for lithiumion batteries(LIBs) and their underlying storage mechanisms were investigated. Instead of a step-bystep reduction of each individual metal cation, the HEFs seem to exhibit a single-step reduction process,indicating a solid solution compound instead of merely a mixture of different metal fluorides. It was also observed that the electrochemical behavior of the HEFs depends on each individual incorporated element. Therefore, by altering the elemental composition, new materials that exhibit improved electrochemical properties can be designed. Remarkably, HEFs with seven incorporated metal elements exhibited a better cycling stability as well as a lower hysteresis compared to binary metal *** findings offer new guidelines for material design and tailoring towards high performance LIBs.

关键词： High entropy materials High entropy fluorides Conversion cathodes Tailored electrochemistry Li-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

Analysis of pneumatic atomizer spray profiles

引用

Particuology 2016年第6期14卷 80-85页

作者： Walter Schafer simon Rosenkranz Felix Brinckmann Cameron Tropea AOM-Systems GmbH Flughafenstrasse 15 64347 Griesheim Germany LacTec GmbH Otto-Hahn-Strasse 6-8 63110 Rodgau Germany Institute of Fluid Mechanics and Aerodynamics Technische Universitat Darmstadt Alarich-Weiss-Strasse 10 64287 Darmstadt Germany Graduate School of Computational Engineering Technische Universitat Darmstadt Dolivostrasse 15 64287 Darmstadt Germany

Our objective is to analyze the atomization processes of a pneumatic atomizer by measuring the size and velocity distributions of droplets in a liquid paint spray. The droplet size and velocity distributions have been determined at different axial positions in the spray; a mathematical description of how these quan- tities vary throughout the spray is then proposed. Additionally, the relative number density of droplets and the relative local mass flux are estimated.

关键词： Pneumatic atomizer Spray Measurement Droplet size profile Droplet velocity profile Time-shift

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

伽利略空间和地面段定义：系统和性能

引用

控制工程（北京） 2006年第4期 59-64页

作者： Rafael Lucas Joerg. hahn simon Dinwiddy Manfred Lugert Guliano Gatti Javier Benedicto 王殿佑（译）潘科炎（校）

1999年，欧洲委员会（EC）和欧洲空间局（ESA）开始了“伽利略”系统的定义阶段。按计划“伽利略”系统是在民航控制下的全球卫星导航系统，为全球提供卫星导航和授时服务。早在“伽利略”系统的定义阶段，EC和ESA就已开展了一系列的市... 详细信息

1999年，欧洲委员会（EC）和欧洲空间局（ESA）开始了“伽利略”系统的定义阶段。按计划“伽利略”系统是在民航控制下的全球卫星导航系统，为全球提供卫星导航和授时服务。早在“伽利略”系统的定义阶段，EC和ESA就已开展了一系列的市场调研和系统定义研究，还进行了硬件和应用软件的预先研发。针对于商业市场、专业领域、生命安全和保险相关的应用领域的需求，“伽利略”将提供遍及全球的开放服务和受控访问服务。定位服务的精度在5m范围内。本文介绍目前正在ESA的伽利略卫星计划框架内研究的“伽利略”空间段和与之相关的地面段的主要设计特色。着重介绍系统结构和性能。与本文配套的有关空间段和地面段活动的专论将分别提交发表。

关键词：全球卫星导航系统欧洲空间局伽利略地面段定位服务应用软件

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

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

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：