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Journalism and Mass Communication 2017年第4期7卷 165-186页

作者： Osei Appiah Lanier holt Tiffany White Katie Dale The Ohio State University Columbus Ohio U.S. University of Georgia Athens Georgia U.S. Florida State University Tallahassee Florida U.S.

Innovative boron nitride-doped propellants

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Defence Technology（防务技术） 2016年第2期12卷 69-80页

作者： Thelma MANNING Richard FIELD Kenneth KLINGAMAN Michael FAIR John BOLOGNINI Robin CROWNOVER Carlton P.ADAM Viral PANCHAL Eugene ROZUMOV Henry GRAU Paul MATTER Michael BEACHY Christopher holt Samuel SOPOK USA rmy RDECOM ARDEC Picatinny Arsenal NJ USA pH Matter LLC Columbus OH USA Benet Laboratory Watervliet NY USA

The U.S. military has a need for more powerful propellants with balanced/stoichiometric amounts of fuel and oxidants. However, balanced and more powerful propellants lead to accelerated gun barrel erosion and markedly shortened useful barrel life. Boron nitride(BN) is an interesting potential additive for propellants that could reduce gun wear effects in advanced propellants(US patent pending 2015-026P). Hexagonal boron nitride is a good lubricant that can provide wear resistance and lower flame temperatures for gun barrels. Further, boron can dope steel, which drastically improves its strength and wear resistance, and can block the formation of softer carbides. A scalable synthesis method for producing boron nitride nano-particles that can be readily dispersed into propellants has been developed. Even dispersion of the nano-particles in a double-base propellant has been demonstrated using a solvent-based processing approach. Stability of a composite propellant with the BN additive was verified. In this paper, results from propellant testing of boron nitride nano-composite propellants are presented, including closed bomb and wear and erosion testing. Detailed characterization of the erosion tester substrates before and after firing was obtained by electron microscopy,inductively coupled plasma and x-ray photoelectron spectroscopy. This promising boron nitride additive shows the ability to improve gun wear and erosion resistance without any destabilizing effects to the propellant. Potential applications could include less erosive propellants in propellant ammunition for large, medium and small diameter fire arms.

关键词：复合推进剂六角氮化硼硼掺杂创新型 X射线光电子能谱仪电感耦合等离子体腐蚀测试仪合成方法

Facilitating Water electrolysers for electricity-grid services in Europe through establishing standardized testing protocols

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Clean Energy 2020年第4期4卷 379-388页

作者： Shi You Regine Reissner Christoph Imboden Cyril Bourasseau Pablo Marcuello Daniel Greenhalgh Ben Green Laura Abadía Vanesa Gil Marius Bornstein Yi Zong Xu Chen Chresten Træholt Department of Electrical Engineering Technical University of DenmarkElektrovej 325DK-2800 Kgs.LyngbyDenmark German Aerospace Center Institute of Engineering ThermodynamicsPfaffenwaldring 38-4070569 StuttgartGermany Lucerne School of Engineering and Architecture Technikumstrasse 21CH-6048 HorwSwitzerland CEA LitenDepartment of Biomass and Hydrogen Technologies17 Avenue des Martyrs38000 GrenobleFrance Industrie Haute Technologie Clos-DonrouxC.P.2281870 Monthey 1Switzerland ITM Power Altas way 22SheffieldS47QQUK Foundation for the Development of New Hydrogen Technologies in Aragon Ctra.N-330akm.56622197 HuescaSpain NEL Department of Hydrogen ElectrolyserP.O.Box 24NO-3671 NotoddenNorway

Electrolysers,which convert electricity into hydrogen,have the potential to offer a variety of electrical-grid services,therefore facilitating the integration of intermittent renewables into electrical *** various activities that aim to unlock this hidden value,the 3-year European Union project QualyGridS launched in 2017 aims to establish standardized testing protocols for electrolysers to perform electricity-grid *** paper shares experience and intermediate results of QualyGridS with respect to the testing protocols,test benches and testing *** results of this work facilitate mutual understanding between the electricity industry and the hydrogen industry,support further development of the cross-sector testing standards,guide the design and selection of grid-service-oriented electrolyser applications and foster the transition towards a fossil-free-energy future based on high shares of hydrogen and other renewable solutions.

关键词： electrolyser hydrogen electrical-grid service QualyGridS test bench testing protocols

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优化EEG放大器设计的性能并降低功耗

电子技术应用 2012年第11期38卷 8-10页

作者： Harry holt Matt Duff Bill Kolasa ADI公司 CareFusion

随着脑部研究和EEG诊断的持续突破,人们期望EEG监测装置也能够在传统临床环境以外的新环境中运作,而这些新的环境同时也引发新的设计挑战。来自ADI公司的应用工程师Harry holt、Matt Duff与来自CareFu-sion的首席电气工程师Bill Kolasa... 详细信息

随着脑部研究和EEG诊断的持续突破,人们期望EEG监测装置也能够在传统临床环境以外的新环境中运作,而这些新的环境同时也引发新的设计挑战。来自ADI公司的应用工程师Harry holt、Matt Duff与来自CareFu-sion的首席电气工程师Bill Kolasa就EEG前端设计的第一级———仪表放大器的各种利害权衡进行了深入讨论,给出了最优化的设计思路。

关键词： CareFusion EEG 仪表放大器

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新氟喹诺酮类药物的抗微生物疗法

国外医药（抗生素分册） 1993年第6期14卷 447-450页

作者： Curtis D holt 王金生

当前氟喹诺酮类药物不仅已成为发达国家如日本、美国、英国、德国、法国等许多国家的常用抗感染药物,而且在第三世界也得到迅速发展,如在印度该类药物的平均年增长率高达25%～28%.该类药物的口服制剂已成为治疗常见感染的重要药物,同时... 详细信息

当前氟喹诺酮类药物不仅已成为发达国家如日本、美国、英国、德国、法国等许多国家的常用抗感染药物,而且在第三世界也得到迅速发展,如在印度该类药物的平均年增长率高达25%～28%.该类药物的口服制剂已成为治疗常见感染的重要药物,同时最近已证实,开始采用静脉给药然后改为口服给药的疗法已成为治疗某些严重感染的有效、安全、经济的疗法,尤其对多重耐药菌引起的严重感染有重要价值。最近因严重毒副作用而取消了刚刚在美国上市的替马沙星,虽然对该类药物市场可能有一定影响,但据 FDA 统计,其它已上市多年的品种如诺氟沙星、氧氟沙星和环丙沙星均没有像替马沙星那样多的严重毒副作用。环丙沙星1991年的销售额已达9.04亿美元,较1990年增加19.7%,仅次于头孢克罗.但目前已上市的品种对革兰氏阳性菌特别是肺炎链球菌的活性差,对耐甲氧西林的金葡菌、厌氧菌等活性也不理想,因此开发新品种的工作一直在大量继续进行.本文对了解国外该类药物现状有一定参考价值.

关键词：新氟喹诺酮抗微生物疗法

纳米多孔Pt,PtRu及PtRuIr催化剂的电化学FTIR光谱之比较(英文)

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电化学 2010年第3期16卷 263-272页

作者： Robert M.Amussen Peter holt-Hindle Samantha Nigro 加拿大湖首大学化学系

近年来,致力于Pt基电催化剂在燃料电池中的应用已取得显著成果.但随贵金属(如Pt)成本的增加,提高催化剂的活性以及降低负载量的需求也日益迫切.为此,作者合成并比较了纳米多孔Pt,PtRu及PtRuIr3种电催化剂.以扫描电镜(SEM)、能量色散谱(E... 详细信息

近年来,致力于Pt基电催化剂在燃料电池中的应用已取得显著成果.但随贵金属(如Pt)成本的增加,提高催化剂的活性以及降低负载量的需求也日益迫切.为此,作者合成并比较了纳米多孔Pt,PtRu及PtRuIr3种电催化剂.以扫描电镜(SEM)、能量色散谱(EDS)、X射线衍射(XRD)和X射线光电子能谱(XPS)表征水热法制得的纳米多孔电极.CO汽提实验和甲醇氧化反应测试上述纳米多孔材料的电催化活性.结果表明,添加Ir极大改善纳米多孔PtRu的活性.采用现场电化学FTIR光谱技术研究纳米多孔Pt,PtRu及PtRuIr电极上的甲醇氧化反应,以进一步揭示这种显著增强效应的成因.

关键词：电催化作用甲醇氧化电化学FTIR 纳米多孔PtRuIr

Spatio-Temporal Variations in the Associations between Hourly PM<sub>2.5</sub>and Aerosol Optical Depth (AOD) from MODIS Sensors on Terra and Aqua

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Health 2013年第10期5卷 8-13页

作者： Minho Kim Xingyou Zhang James B. holt Yang Liu Epidemiology and Surveillance Branch Division of Population Health National Center for Chronic Disease and Public Health Promotion Centers for Disease Control and Prevention Atlanta USA Rollins School of Public Health Emory University Atlanta USA

Recent studies have explored the relationship between aerosol optical depth (AOD) measurements by satellite sensors and concentrations of particulate matter with aerodynamic diameters less than 2.5 μm (PM2.5). However, relatively little is known about spatial and temporal patterns in this relationship across the contiguous United States. In this study, we investigated the relationship between US Environmental Protection Agency estimates of PM2.5 concentrations and Moderate Resolution Imaging Spectroradiometer (MODIS) AOD measurements provided by two NASA satellites (Terra and Aqua) across the contiguous United States during 2005. We found that the combined use of both satellite sensors provided more AOD coverage than the use of either satellite sensor alone, that the correlation between AOD measurements and PM2.5 concentrations varied substantially by geographic location, and that this correlation was stronger in the summer and fall than that in the winter and spring.

关键词： Aerosol Optical Depth Moderate Resolution Imaging Spectroradiometer Terra Aqua PM2.5 Contiguous United States

Liver biopsy in a district general hospital:Changes over two decades

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World Journal of Gastroenterology 2007年第40期13卷 5336-5342页

作者： Wing-Kin Syn Caroline Bruckner-holt Adam Farmer Sarah Howdle Jeffrey Bateman Liver and Hepatobiliary Unit Queen Elizabeth HospitalBirminghamB 15 2THUnited Kingdom Department of Gastroenterology Princess Royal HospitalTelfordUnited Kingdom Department of Gastroenterology City HospitalBirminghamUnited Kingdom Department of Radiology Princess Royal HospitalYelfordUnited Kingdom

瞄准：在英国在一所区域综合医院在二十年学习肝活体检视实践。方法：我们识别了从辐射学和肠胃病学部门的数据库有在 1986 和 2006 之间的至少一肝活体检视的所有病人。有不完全的临床的数据的题目从学习被排除。结果：103 肝活体检视... 详细信息

瞄准：在英国在一所区域综合医院在二十年学习肝活体检视实践。方法：我们识别了从辐射学和肠胃病学部门的数据库有在 1986 和 2006 之间的至少一肝活体检视的所有病人。有不完全的临床的数据的题目从学习被排除。结果：103 肝活体检视的一个总数被执行。临床的数据为 88 个病人是可得到的，与 95 活体检视。在 1986 和 1996 之间，(95%) 18 从活体检视执行了的 19 肝是盲目的，(33%) 6 为主要胆汁性肝硬变。在 1996 和 2006 之间，(18%) 14 从 76 活体检视是盲目的；并且指示是反常的肝测试(33%) ，丙肝(12%) 和目标活体检视(11%) 。肝活体检视在 5 是不起帮助作用的(5%) 题目。疼痛是肝活体检视(5%) 的最普通的复杂并发症。没有活体检视相关的死亡被报导。与盲目活体检视技术向更技术的失败和复杂并发症有一个趋势。结论：在小区域医院里执行的肝活体检视为安全、有用诊断并且阶段目的。反常的肝测试，非酒精的脂肝疾病和指向的活体检视是逐渐地普通的指示。指导超声的肝活体检视现在是比较喜欢的方法并且与更少复杂并发症被联系。

关键词：活组织检查肝脏检查非酒精性肝炎并发症