检索结果-南通市图书馆

Multi-Material ALE with AMR for Modeling Hot Plasmas and Cold Fragmenting Materials

Plasma Science and Technology 2015年第2期17卷 117-128页

作者： Alice KONIGES Nathan MASTERS Aaron FISHER David EDER Wangyi LIU robert anderson David BENSON Andrea BERTOZZI Lawrence Berkeley National Laboratory Lawrence Livermore National Laboratory Jacobs School of Engineering 9500 Gilman Dr.UCSDLa JollaCA 92093USA Department of Mathematics 520 Portola PlazaUCLALos AngelesCA 90095USA

We have developed a new 3D multi-physics multi-material code, ALE-AMR, which combines Arbitrary Lagrangian Eulerian （ALE） hydrodynamics with Adaptive Mesh Refinement （AMR） to connect the continuum to the microstructural regimes. The code is unique in its ability to model hot radiating plasmas and cold fragmenting solids. New numerical techniques were developed for many of the physics packages to work efficiently on a dynamically moving and adapting mesh. We use interface reconstruction based on volume fractions of the material components within mixed zones and reconstruct interfaces as needed. This interface reconstruction model is also used for void coalescence and fragmentation. A flexible strength/failure framework allows for pluggable material models, which may require material history arrays to determine the level of accumulated damage or the evolving yield stress in J2 plasticity models. For some applications laser rays are propagating through a virtual composite mesh consisting of the finest resolution representation of the modeled space. A new 2nd order accurate diffusion solver has been implemented for the thermal conduction and radiation transport packages. One application area is the modeling of laser/target effects including debris/shrapnel generation. Other application areas include warm dense matter, EUV lithography, and material wall interactions for fusion devices.

关键词： multi-physics simulations arbitrary lagrangian eulerian hydrodynamics,adaptive mesh refinement fragmentation laser ray tracing NIF

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

Backpacking to Hailuogou Glacier

引用

China Today 2003年第2期52卷 60-65页

作者： By robert anderson

MOSTof the world's highest mountains are clustered along the barren, jagged area where Tibet, Nepal, and Pakistan meet, but Gongga Shan-in China's western Sichuan province -stands apart. A Western mountaineering team first reached its summit in 1935, and a Chinese team made the climb in the 1950s. The last team to attempt it perished in an avalanche.

关键词：四川旅游康定地区民族风俗自然景观交通共嘎山

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

Disharmonious Ventricular Relationship and Topology for the Given Atrioventricular *** Diagnostic Approach Using 3D Modeling and Printing

引用

Congenital Heart Disease 2022年第5期17卷 495-504页

作者： Shi-Joon Yoo Ankavipar Saprungruang Christopher Z.Lam robert H.anderson Department of Diagnostic Imaging Hospital for Sick ChildrenUniversity of TorontoTorontoCanada Division of Cardiology Department of PediatricsLabatt Family Heart CentreHospital for Sick ChildrenUniversity of TorontoTorontoCanada Biosciences Division Newcastle UniversityNewcastle-upon-TyneUK

In the last issue,two case reports separately present examples of the extremely rare and complex congenital heart diseases that show concordant atrioventricular connections to the L-looped ventricles in the presence of situs *** cases highlight that the relationship between the two ventricles within the ventricular mass is not always harmonious with the given atrioventricular *** disharmony between the connections and relationships requires careful assessment of the three basic facets of cardiac building blocks,namely their morphology,the relationship of their component parts,and their connections with the adjacent segments.3D imaging and printing can now facilitate an otherwise difficult diagnosis in such complex *** of either the 3D images or the models permit accurate assessment of the ventricular topologic pattern by creating the right ventricular en-face septal view,thus facilitating placement of the observer’s *** we now emphasize,an alternative approach,which might prove more attractive to imagers,is to rotate the ventricular mass to provide the ventricular apical view,thus permitting determination of the ventricular relationship without using the hands.

关键词： Segmental approach disharmony between connection and relationship ventricular loop pattern ventricular topology juxtaposition of atrial appendages 3D modeling 3D printing

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

Green’s Function for the Quartic Oscillator

引用

Applied Mathematics 2016年第14期7卷 1571-1579页

作者： robert L. anderson Department of Physics and Astronomy University of Georgia Athens USA

In this paper, a quantum mechanical Green’s function for the quartic oscillator is presented. This result is built upon two previous papers: first [1], detailing the linearization of the quartic oscillator (qo) to the harmonic oscillator (ho);second [2], the integration of the classical action function for the quartic oscillator. Here an equivalent form for the quartic oscillator action function in terms of harmonic oscillator variables is derived in order to facilitate the derivation of the quartic oscillator Green’s Function, namely in fixing its amplitude.

关键词： Nonrelativistic Quartic Quantum Mechanics Green’s Oscillator

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

Integration of the Classical Action for the Quartic Oscillator in 1 + 1 Dimensions

引用

Applied Mathematics 2013年第10期4卷 117-122页

作者： robert L. anderson Department of Physics and Astronomy University of Georgia Athens USA

In this paper, we derive an explicit form in terms of end-point data in space-time for the classical action, i.e. integration of the Lagrangian along an extremal, for the nonlinear quartic oscillator evaluated on extr... 详细信息

关键词： Action Integral

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

Noncovariant Lagrangians Are Presented Which Yield Two-Component Equations of Motion for a Class of Relativistic Mechanical Systems in 1 + 1 Dimensions Including the Harmonic Oscillator

引用

Applied Mathematics 2020年第9期11卷 917-921页

作者： robert L. anderson Department of Physics and Astronomy University of Georgia Athens Georgia USA

First, a Lagrangian is presented and authenticated for a Relativistic Harmonic Oscillator in 1 + 1 dimensions. It yields a two-component set of equations of motion. The time-component is the missing piece in all previous discussions of this system! The second result is that this Oscillator Langrangian generalizes to Langrangians for a class of particles in 1 + 1 dimensions subject to an arbitrary potential V which is space dependent only.

关键词： Harmonic Oscillator

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

Characterizing motor impulsivity of individuals classified as overweight to obese

引用

Sports Medicine and Health Science 2023年第4期5卷 314-318页

作者： Kyle D.Flack robert E.anderson III Kylie F.McFee Bridgette T.Day Department of Dietetics and Human Nutrition College of AgricultureUniversity of KentuckyLexingtonKYUSA

Deficits in the impulse control system are an important predictor of energy intake and body *** classified as overweight to obese may possess these deficits as a general behavioral trait or they may be food*** present study assessed motor impulsivity(ability to suppress a pre-potent response)when presented with food and neutral(non-food)cues,testing if deficits in motor impulsivity is specific to food cues or a general trait among participants classified as overweight to *** proportion of inhibitory failures to no-go targets following food cues(10.8%)was significantly greater than the proportion of inhibitory failures to no-go targets following neutral cues(1.9%,p<0.001).These differences remained when covering for sex and *** indicates deficits in food-specific impulse control(as opposed to general impulse control)are present in those classified as overweight to *** the specific aspect of impulse control that is present in this population is needed for the development of future impulse control training interventions that seek to change eating behaviors as a means for weight control.

关键词： Impulsivity Inhibitory control Impulse control Response inhibition Food cues Obesity Go/NoGo task

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

高丽青瓷与中国青瓷

引用

中国陶瓷 2007年第1期43卷 74-77页

作者：王芬罗宏杰 robert anderson 陕西科技大学咸阳712081 中国科学院上海硅酸盐研究所上海200050 West Virginia university

针对诸多关于高丽青瓷与中国青瓷孰优孰劣的评说,对高丽青瓷中最具代表性的镶嵌青瓷、刻花青瓷与中国青瓷进行了釉色釉质与微观结构的分析比较,探讨了各自的特征与特色。指出高丽青瓷与中国越窑,汝窑、龙泉窑及耀州窑青瓷相比,前者追求... 详细信息

针对诸多关于高丽青瓷与中国青瓷孰优孰劣的评说,对高丽青瓷中最具代表性的镶嵌青瓷、刻花青瓷与中国青瓷进行了釉色釉质与微观结构的分析比较,探讨了各自的特征与特色。指出高丽青瓷与中国越窑,汝窑、龙泉窑及耀州窑青瓷相比,前者追求色彩的鲜艳与装饰图案的精细,后者则追求素净大方的玉质感,使外观艺术效果具有显著的地域差异。高丽青瓷风格清丽温婉,精细雅致,虽穷工极态,但风格略显纤柔又过工致,似缺少中国青瓷的大气,洒脱和刚健。但无论中国青瓷还是高丽青瓷,均卓越地遵从了各自民族艺术的美学法则。

关键词：高丽青瓷中国青瓷釉色与釉质艺术风格

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

sulfation of Tibolome Metabolites by Postmenopausal Human liver

sulfation of Tibolome Metabolites by Postmenopausal Human li...

引用

第八次全国妇产科学学术会议

作者： MIN WANG robert J.anderson Depart Of OB/GY The Second Affiliated Hospital of china Medical University Shenyang LiaoNing 110004 VA Medical Center University of Nebraska Medical Center and Creighton University School of Medicine Omaha NE 68105 USA

Background & Objectie:Sulfation of steroid hormones renders them receptor-inactive. Sulfotransferases (SULTs) catalyze the reaction with 3’-phosphoadenosine-5’-phosphosulfate(PAPS) as the sulfuryl moiety donor. Tibolone is a unique steroid that improves cliimacteric symptoms and prevents postmenopausal osteoporosis. It is the first in the STEAR class of compounds (Selective Tissue Estrogenic Activity Regulator). The active metabolites 3α-hydroxytibolone (3α-OHT)and 3β-hydroxytibolone (3β-OHT) undergo sulfation. Our objective was to characterize the human liver SULT activities involved in the sulfation of tibolone metabolites. Methods A pool of human liver cytosol

关键词：

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

MECHANISMS OF ADAPTATION OF THE RETINA TO OXIDANT STRESS

MECHANISMS OF ADAPTATION OF THE RETINA TO OXIDANT STRESS

引用

第十八届国际眼科研究大会

作者： robert.anderson Masaki.Tanito Department of Ophthalmology University of Oklahoma Health Sciences CenterOklahoma CityOK USA

＜正＞One of the dilemmas in research on n-6 and n-3 polyunsaturated fatty acid （PUFA） metabolism is how these fatty acids,which are so susceptible to non-enzymatic oxidation, can be neuroprotective in an oxidant stress *** designed a series of experiments to test the hypothesis that the products of PUFA oxidation up-regulate the

关键词：

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

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：