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在放电泵浦台面软X射线放大器中获得饱和极限并提取能量

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强激光技术进展 1997年第6期7卷 10-11页

作者： Rocc.,jj clark.,d P

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Self-diffusion of Fluids Confined in Ordered and disordered Microporous Carbons

Self-Diffusion of Fluids Confined in Ordered and Disordered ...

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第十届全国计算(机)化学学术会议

作者： Joshua d.Moore jeremy C.Palmer Thomas J.Roussel Keith E.Gubbins Institute for Computational Science & Engineering and department of Chemical and Biomolecular Engineering North Carolina State UniversityRaleighNC 27695 U.S.A Institut de Ciencia de Materials Consejo Superior de Investigaciones CientificasCampus de la UAB 08193 BellaterraBarcelonaSpain

Microporous carbons have found numerous applications in the areas of chemistry, chemical engineering and materials science due to their potential for use in separation and storage of *** activated carbons are an example of a disordered microporous *** have found widespread use in industry due to their low production cost and high adsorption *** Co.’s bituminous coal-based carbon(BPL) is among the most widely studied and has been used extensively in environmental applications as an adsorbent for the removal of toxic and odorous industrial *** the Hybrid Reverse Monte Carlo method,Palmer et *** recently developed a morphologically realistic model of BPL,that successfully predicts the adsorptive properties of the real material. A second class of materials which has had recent interest are carbon templates of silica materials such as MCM-41,SBA-15 or various *** type of material is inherently highly ordered.A carbon replica of the zeolite Faujasite(C-FAU) has shown potential application in the areas of hydrogen storage and in the development of hydrogen fuel cells. Using a mimetic Grand Canonical Monte Carlo templating process,Roussel et *** modeled C-FAU and compared its structural and adsorptive properties with experiment. Using microcanonical molecular dynamics simulations,we compare the self-diffusion of fluids confined in the model BPL and C-FAU and show that the microporous features of the materials lead to multi-modal diffusion *** also compare to the diffusion of fluids in a carbon nanotube(CNT) bundle,which has distinct bimodal diffusion,with Fickian diffusion occurring inside the CNTs and single-file diffusion occurring in *** show that the diffusion of fluids in the ordered(C-FAU) and disordered(BPL) microprous carbons possess both slower(quasi-single-file) and faster(Fickian) diffusion modes.

关键词： bituminous coal-based carbon BPL bimodal diffusion carbon replica Faujasite carbon nanotube bundle single-file diffusion Fickian diffusion

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Print companion for earth matters:environmental geology Cd-ROM

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1998年

作者： jeremy dunning Larry Onesti

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The Active Management of Postpartum Uterine Atony—A Checklist Based Approach

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Open Journal of Obstetrics and Gynecology 2016年第11期6卷 646-653页

作者： Rachael Bailey Michael R. Foley Nicole Hall Adiel Fleischer Mary d’Alton Gary A. dildy Michael A. Belfort Gary d. Hankins Steven L. clark University of Arizona College of Medicine Phoenix Banner University Medical Center Phoenix Phoenix USA Baylor College of Medicine/Texas Children’s Hospital Houston USA Northwell Health-Hofstra School of Medicine New York USA Columbia University College of Physicians and Surgeons New York Presbyterian Hospital New York USA University of Texas Medical Branch at Galveston Galveston USA

Uterine atony remains the major cause of postpartum hemorrhage, and of death from postpartum hemorrhage in the United States. While existing guidelines outlining a general approach to postpartum hemorrhage are useful, recent data suggest that greater specificity may be necessary to significantly impact mortality. We present a highly specific and methodical approach to the management of uterine atony, which addresses what we believe to be the most common cause of preventable maternal hemorrhagic death in the US—lack of an intensive, focused approach to atony and perseverance with therapies that are not working. This protocol should result in cessation of hemorrhage by medical or surgical means within 1 hour of diagnosis. We then apply this protocol to a number of illustrative cases of maternal death due to atony. An approach involving the active management of uterine atony may assist clinicians in avoiding severe morbidity and mortality from uterine atony.

关键词： Postpartum Hemorrhage Obstetric Hemorrhage Uterine Atony

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dimensional analysis and extended hydrodynamic theory applied to long-rod penetration of ceramics

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defence Technology（防务技术） 2016年第4期12卷 334-342页

作者： J.d.CLAYTON Impact Physics RdRL-WMP-C US Army Research Laboratory Aberdeen Proving Ground A.James clark School of Engineering University of Maryland College Park

Principles of dimensional analysis are applied in a new interpretation of penetration of ceramic targets subjected to hypervelocity impact. The analysis results in a power series representation – in terms of inverse velocity – of normalized depth of penetration that reduces to the hydrodynamic solution at high impact velocities. Specifically considered are test data from four literature sources involving penetration of confined thick ceramic targets by tungsten long rod projectiles. The ceramics are Ad-995 alumina, aluminum nitride, silicon carbide, and boron *** data can be accurately represented by the linear form of the power series, whereby the same value of a single fitting parameter applies remarkably well for all four ceramics. Comparison of the present model with others in the literature(e.g., Tate's theory) demonstrates a target resistance stress that depends on impact velocity, linearly in the limiting case. Comparison of the present analysis with recent research involving penetration of thin ceramic tiles at lower typical impact velocities confirms the importance of target properties related to fracture and shear strength at the Hugoniot Elastic Limit(HEL) only in the latter. In contrast, in the former(i.e., hypervelocity and thick target) experiments, the current analysis demonstrates dominant dependence of penetration depth only by target mass density. Such comparisons suggest transitions from microstructure-controlled to density-controlled penetration resistance with increasing impact velocity and ceramic target *** and hosting by Elsevier B.V. on behalf of China Ordnance Society.

关键词： Ceramics Terminal ballistics Armor dimensional analysis Hydrodynamics

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立法的尊严

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2019年

作者： (美)杰里米·沃尔德伦(jeremy Waldron)

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3d Studio VIZ技术内幕

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丛书名： “图形图像百宝箱”丛书

2002年

作者：（美）jeremy Hubbell （美）Ted Boardman 张剑玮等译

本书介绍了3d Studio VIZ R3软件的基本操作和强大的建模、渲染以及面向设计的动画功能，展示了该软件的全新设计概念。

ISBN: (数字)7505374737

ISBN: (纸本)7505374737

本书介绍了3d Studio VIZ R3软件的基本操作和强大的建模、渲染以及面向设计的动画功能，展示了该软件的全新设计概念。

关键词：三维计算机图形学动画

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带状线微波振荡器

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真空电子技术 1974年第Z1期 54-56页

作者： Melvin.d.clark 陈留生

随着导弹-空间时代的来临,导致了电子系统的微型化,另外,为了使得导弹在飞行期间遇到外界严重冲击和振动之后仍能正常的工作,就要提高电子系统的牢固性。虽然三极管制造厂商在缩小电子管的物理尺寸方面取得了很大进展,但是在缩小振荡器... 详细信息

随着导弹-空间时代的来临,导致了电子系统的微型化,另外,为了使得导弹在飞行期间遇到外界严重冲击和振动之后仍能正常的工作,就要提高电子系统的牢固性。虽然三极管制造厂商在缩小电子管的物理尺寸方面取得了很大进展,但是在缩小振荡器的尺寸及提高这些系统耐冲击和振动的性能方面,没有取得什么显著的进展。当然在缩小振荡器的外形尺寸方面也作了一些工作,如把某些介质材料填入振荡器中,这样对于给定频率下,振荡器的尺寸将能做得较小。同时,由于三极管与腔体之间的接触面装配得比较牢固,因而也提高了一些耐冲击和振动的性能。

关键词：带状线电子管电容同轴传输线电子设备振荡器分布反馈

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Maternal Supplementation of Vitamin d during Lactation to Support Infant Vitamin d Needs: A Systematic Review

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Open Journal of Pediatrics 2018年第3期8卷 255-272页

作者： Kelly Schossow Alena M. clark Mary A. Harris Jefferson County Public Health Lakewood CO USA department of Nutrition and dietetics University of Northern Colorado Greeley CO USA department of Food Science and Human Nutrition Colorado State University Fort Collins CO USA

Human milk is generally considered to be insufficient in vitamin d. However, research completed in the 1980s showed that the vitamin d content of human milk is directly related to maternal serum vitamin d levels and therefore may potentially be adequate if the mother’s vitamin d levels are sufficient. Approximately one-third of the adult population, which includes breastfeeding women, in the United States have vitamin d insufficiency or deficiency. Among infants, 90.4% of breastfed infants are vitamin d deficient compared to 15.4% of formula fed infants. The American Academy of Pediatrics (AAP) has therefore recommended all breastfed infants be directly supplemented with 400 IU per day of vitamin d to decrease the risk of vitamin d insufficiency and rickets. According to the AAP, compliance rates with this recommendation ranges between 2% - 36%. Because the recommendation to supplement may undermine breastfeeding, many pediatricians do not inform their patients of the need to supplement. Additionally, some parents are concerned about directly supplementing their infant as risks may include allergic reactions to the ingredients, aspiration pneumonia, accidental overdose, and changes in intestinal flora and pH which may compromise the immune benefits of human milk. A literature review was conducted to examine the effect of maternal supplementation with vitamin d during lactation on human milk vitamin d content and maternal and infant serum vitamin d levels. Although there is no current consensus regarding dosage and timing of maternal vitamin d supplementation, the literature suggests that high-dose vitamin d supplementation of the lactating mother is as effective at maintaining infant vitamin d levels as direct infant supplementation, while also correcting the mother’s vitamin d deficiency.

关键词： vitamin d vitamin supplements infant breastfeeding human milk

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受控导线断线时输电铁塔的实测动态特性

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电力建设 2007年第5期28卷 93-96页

作者： M clark d J RICHARdS d CLUTTERBUCK 何鹏(翻译) 马明(编校) 英国国家电网股份有限公司英国南安普敦大学土木与环境工程学院不详

英国在1条退役的输电铁塔上进行了断线事件的现场模拟测试,研究了传递到输电铁塔塔腿的负载分布、负载传递速率。在土工离心机中进行了相似的物理模型研究,给出了负载传递速率和承载系数(Ns)的关系。

关键词：架空线路铁塔浅塔腿上拔阻力物理模型荷载率的影响

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