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系统工程与电子技术 1989年第5期11卷 47-58页

作者： warren W.Willman 杨木

小型寻的器比例因子误差对最优制导的主要影响可以根据自动寻的导弹(它采用捷联寻的器拦截随机机动目标)的某些限制来确定。这些影响包括改变反馈增益和增加快速波动的加速度分量。后者主要用于改善比例因子的估算,即使这个参数误差在... 详细信息

小型寻的器比例因子误差对最优制导的主要影响可以根据自动寻的导弹(它采用捷联寻的器拦截随机机动目标)的某些限制来确定。这些影响包括改变反馈增益和增加快速波动的加速度分量。后者主要用于改善比例因子的估算,即使这个参数误差在最优制导律的性能判据中不会明显地恶化。该判据是标准的二次判据,它主要是使导弹终端速度和拦截概率的加权平均值达到最大。对于二次判据来说,如果没有比例因子误差,比例导航就是最优制导律。文中给出了有关具体例子的数值结果。

关键词：捷联寻的器寻的制导最优制导

Longitudinal association of gonorrhea and bacterial vaginosis with repeat chlamydia diagnoses among U.S. Army women: A retrospective cohort analysis

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Military Medical Research 2019年第2期6卷 128-134页

作者： Christian TBautista Eyako KWurapa warren BSateren Bruce PHollingsworth Jose LSanchez Division of Health Research Lancaster UniversityLancasterUK Walter Reed Army Institute of Research Silver SpringMDUSA Senior Research Consultant WashingtonDCUSA Armed ForcesHealth Surveillance Branch Public Health DivisionDefense HealthAgencySilver SpringMDUSA.

Background: Historically, sexually transmitted infections have affected the health of the U.S. military. To determine whether gonorrhea, bacterial vaginosis, genital herpes, and trichomoniasis are predictors of repeat chlamydia diagnoses among U.S. Army women, medical data reported into the Defense Medical Surveillance System during the 2006–2012 period were ***: For all inpatient and outpatient medical records, the first and second International Classification of Diseases,version 9(ICD-9) diagnostic positions were reviewed for each chlamydia case to determine the occurrence of repeat diagnoses. The Andersen-Gill regression model, an extension of the Cox model for multiple failure-time data, was used to study associations between predictors and repeat chlamydia ***: Among 28,201 women with a first chlamydia diagnosis, 5145(18.2%), 1163(4.1%), 267(0.9%), and 88(0.3%)had one, two, three, and four or more repeat diagnoses, respectively. Overall, the incidence of repeat chlamydia was8.31 cases per 100 person-years, with a median follow-up time of 3.39 years. Gonorrhea(hazard ratio(HR)=1.58, 95%CI: 1.44–1.73) and bacterial vaginosis(HR=1.40, 95% CI: 1.09–1.79) were significant predictors for repeat *** estimated hazard ratios were attenuated, but remained significant, after controlling for age, race/ethnicity,marital status, and military rank. No significant association was found for genital herpes(HR=1.13, 95% CI: 0.55–2.29)and trichomoniasis(HR=1.43, 95% CI: 0.43–4.68).Conclusions: This large cohort study suggests that gonorrhea and bacterial vaginosis were associated with repeat chlamydia diagnoses among U.S. Army women. These findings can be used in formulating new interventions to prevent repeat chlamydia diagnoses.

关键词： Gonorrhea Bacterial vaginosis Chlamydia Sexually transmitted infection Military

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俄罗斯的铝工业:策略与机遇

轻金属 1993年第5期 64-65页

作者： warren S.Peterson 顾皓民

1992年9月15～18日在俄罗斯的圣彼得堡举行了俄罗斯铝工业协会会议,议题为发展策略与新投资项目,是独联体国家(CIS)为争取西方国家的财政及技术援助而做的一次努力。有来自30个国家的430位注册参加者,包括世界各主要铝生产厂家利独联体... 详细信息

1992年9月15～18日在俄罗斯的圣彼得堡举行了俄罗斯铝工业协会会议,议题为发展策略与新投资项目,是独联体国家(CIS)为争取西方国家的财政及技术援助而做的一次努力。有来自30个国家的430位注册参加者,包括世界各主要铝生产厂家利独联体的各铝厂和加工厂。俄罗斯的自然资源丰富,但除铝之外,其他资源都不可能用来偿还它的高达700亿美元的债务。铝是俄罗斯可以用来挣回亟需外汇的一种成品,因此出口量从1990年的30万t,猛增到1991

关键词：伏尔加格勒斯大林格勒俄罗斯铝厂有色金属冶炼厂铝工业策略

海洋固着缘毛类纤毛虫——聚缩虫两新种(原生动物,纤毛门)

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动物分类学报 2005年第4期30卷 702-705页

作者：季道德宋微波 Alan warren 中国海洋大学教育部海水养殖重点实验室英国自然历史博物馆动物学部

报道了采自青岛沿海的聚缩虫两新种,倪氏聚缩虫Zoothamnium ***.和王氏聚缩虫***.。两者分别以下列组合的性状区别于所有已知种:倪氏聚缩虫为双层口围缘、交替式分枝、69～88环的总银线数以及口区小膜3由3条平行等长的动基列组成。王氏... 详细信息

报道了采自青岛沿海的聚缩虫两新种,倪氏聚缩虫Zoothamnium ***.和王氏聚缩虫***.。两者分别以下列组合的性状区别于所有已知种:倪氏聚缩虫为双层口围缘、交替式分枝、69～88环的总银线数以及口区小膜3由3条平行等长的动基列组成。王氏聚缩虫为单层口围缘、交替式分枝、108～135环的总银线数以及口区小膜3由两条错位排列的动基列组成。

关键词：纤毛虫缘毛目聚缩虫新种纤毛图式

Leveraging off higher plant phylogenetic insights for antiplasmodial drug discovery

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Natural Products and Bioprospecting 2023年第1期13卷 382-399页

作者： Phanankosi Moyo Luke Invernizzi Sephora M.Mianda Wiehan Rudolph warren A.Andayi Mingxun Wang Neil R.Crouch Vinesh J.Maharaj Biodiscovery Center Department of ChemistryFaculty of Natural and Agricultural SciencesUniversity of PretoriaPrivate Bag X 20HatfieldPretoria 0028South Africa Department of Physical and Biological Sciences Murang’a University of TechnologyMurang’aKenya Computer Science and Engineering University of California Riverside900 University AveRiversideCA 92521USA Biodiversity Research and Monitoring Directorate South African National Biodiversity InstituteBerea RoadP.O.Box 52099Durban 4007South Africa School of Chemistry and Physics University of KwaZulu-NatalDurban 4041South Africa

The antimalarial drug-resistance conundrum which threatens to reverse the great strides taken to curb the malaria scourge warrants an urgent need to find novel chemical scaffolds to serve as templates for the development of new antimalarial *** represent a viable alternative source for the discovery of unique potential antiplasmodial chemical *** expedite the discovery of new antiplasmodial compounds from plants,the aim of this study was to use phylogenetic analysis to identify higher plant orders and families that can be rationally prioritised for antimalarial drug *** queried the PubMed database for publications documenting antiplasmodial properties of natural compounds isolated from higher ***,we manually collated compounds reported along with plant species of origin and relevant pharmacological *** systematically assigned antiplasmodial-associated plant species into recognised families and orders,and then computed the resistance index,selectivity index and physicochemical properties of the compounds from each taxonomic *** the generated phylogenetic trees and the biological data of each clade allowed for the identification of 3‘hot’plant orders and *** top 3 ranked plant orders were the(i)Caryophyllales,(ii)Buxales,and(iii)*** top 3 ranked plant families were the(i)Ancistrocladaceae,(ii)Simaroubaceae,and(iii)*** highly active natural compounds(IC_(50)≤1μM)isolated from these plant orders and families are structurally unique to the‘legacy’antimalarial *** study was able to identify the most prolific taxa at order and family rank that we propose be prioritised in the search for potent,safe and drug-like antimalarial molecules.

关键词： Natural products Plants Phylogenetics Malaria Drug-resistance ‘Hot’plants

天津蓟县铁岭组新剖面钾质斑脱岩锆石U-Pb测年及Hf同位素研究

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岩石学报 2019年第8期35卷 2433-2454页

作者：郭文琳苏文博张健李惠民周红英李怀坤 Frank R ETTENSOHN warren DHUFF 中国地质大学(北京)地球科学与资源学院北京100083 中国地质调查局北京100037 中国地质调查局天津地质调查中心天津300170 Department of Earth and Environment Sciences University of Kentucky Lexington KY 40506 0053 Department of Geology University of Cincinnati Cincinnati OH 45221 0013

天津蓟县西北的大喻山铁岭组剖面钾质斑脱岩夹层锆石U-Pb年龄(1439±14Ma)是约束"蓟县剖面"年代格架的重要锚点,但该剖面露头已遭到严重破坏。最近,笔者在蓟县东北、目前已禁止开采的大五尖采石场发现了铁岭组新剖面,并在其二段近底部... 详细信息

天津蓟县西北的大喻山铁岭组剖面钾质斑脱岩夹层锆石U-Pb年龄(1439±14Ma)是约束"蓟县剖面"年代格架的重要锚点,但该剖面露头已遭到严重破坏。最近,笔者在蓟县东北、目前已禁止开采的大五尖采石场发现了铁岭组新剖面,并在其二段近底部再次确认多层钾质斑脱岩,测得其中两层LA-ICPMS锆石U-Pb年龄(1445±12Ma以及1442±10Ma);采自原大喻山剖面该组二段近底部斑脱岩夹层的样品,也获得其LA-ICPMS锆石U-Pb年龄(1439±11Ma)。以上三个年龄值在误差范围内一致,与之前在原大喻山剖面及河北平泉刘家沟剖面该组二段近底部斑脱岩夹层所获的SHRIMP锆石U-Pb年龄(1439±14Ma及1437±21 Ma)也完全可比。与此同时,本文对以上3个样品锆石还开展了锆石原位Hf同位素研究。其结果显示,176Hf/177Hf值变化范围为0. 281703~0. 281880,εHf(t)=-6. 7^-0. 2,两阶段模式年龄为2200~2603Ma,高斯分布峰值为~2360Ma。这表明,铁岭组钾质斑脱岩的物源主要来自于新太古代-古元古代早期地壳物质的部分熔融。本研究为蓟县剖面乃至燕山地区铁岭组高精度年代约束及地层格架厘定等,提供了更多年代学佐证,进一步夯实了整个蓟县剖面作为华北克拉通中-新元古界标准剖面的科学性和代表性;同时,对华北中元古界钾质斑脱岩夹层的锆石首次开展Lu-Hf同位素研究,为探讨这一特殊类型沉积岩的源岩及相关研究提供了新思路;新发现剖面也为未来继续围绕铁岭组的各项研究,提供了一处露头良好、年代框架扎实可靠、可长期观测的新平台。

关键词：铁岭组 LA-ICPMS锆石U-Pb测年 Lu-Hf同位素钾质斑脱岩蓟县剖面华北克拉通

Shuttle Lands,Safely Ending First Mission Since Columbia

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当代外语研究 2005年第10期 29-30,17页

作者： John Schwartz warren E.Leary 成耀

美国“发现号”航天飞机以及7名宇航员在经过14天太空之旅后在加州成功着陆。这是2003年美国哥伦比亚号航天飞机失事后,美国首次重返太空。虽然“发现号”的这一次太空之旅可谓是一波三折,但还是向世人证明了美国在航天领域的领先地位。

关键词：领先地位航天飞机哥伦比亚飞机失事太空宇航员美国着陆发现加州

Quercetin: A Promising Flavonoid with a Dynamic Ability to Treat Various Diseases, Infections, and Cancers

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Journal of Cancer Therapy 2016年第2期7卷 83-95页

作者： Aaron J. Smith John Oertle Dan warren Dino Prato Envita Medical Center Scottsdale AZ USA

Quercetin is a multifaceted dietary flavonoid with a multitude of biologic activities that can be used to treat various ailments. These include cancer, bacterial and viral infections, cardiovascular disease, and diabetes. A greater emphasis on cancer is discussed within this paper by highlighting some of the beneficial qualities of quercetin without including other related dietary flavonoids and quercetin analogs. In vitro and in vivo analysis are evaluated without making recommendations on dosage, dosing regiments, or administration since quercetin has not been subjected to rigorous clinical trials despite the significant amount of research that has been conducted with quercetin.

关键词： Quercetin Cancer Infection Biomarkers Diabetes Mast Cell Cardiovascular

Light-absorbing Particles in Snow and Ice: Measurement and Modeling of Climatic and Hydrological impact

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Advances in Atmospheric Sciences 2015年第1期32卷 64-91页

作者： Yun QIAN Teppei J.YASUNARI Sarah J.DOHERTY Mark G.FLANNER William K.M.LAU MING Jing Hailong WANG Mo WANG Stephen G.warren Rudong ZHANG Atmospheric Sciences and Global Change Division Pacific Northwest National Laboratory Goddard Earth Sciences Technology and Research Universities Space Research Association NASA Goddard Space Flight Center Department of Atmospheric Sciences University of Washington Department of Atmospheric Sciences University of Michigan Earth System Science Interdisciplinary Center University of Maryland College Park 20740MD USA Earth Science Division NASA Goddard Space Flight Center National Climate Center China Meteorological Administration Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of Sciences College of Atmospheric Sciences Lanzhou University

Light absorbing particles（LAP, e.g., black carbon, brown carbon, and dust） influence water and energy budgets of the atmosphere and snowpack in multiple ways. In addition to their effects associated with atmospheric heating by absorption of solar radiation and interactions with clouds, LAP in snow on land and ice can reduce the surface reflectance（a.k.a., surface darkening）, which is likely to accelerate the snow aging process and further reduces snow albedo and increases the speed of snowpack melt. LAP in snow and ice（LAPSI） has been identified as one of major forcings affecting climate change, *** the fourth and fifth assessment reports of IPCC. However, the uncertainty level in quantifying this effect remains very high. In this review paper, we document various technical methods of measuring LAPSI and review the progress made in measuring the LAPSI in Arctic, Tibetan Plateau and other mid-latitude regions. We also report the progress in modeling the mass concentrations, albedo reduction, radiative forcing, and climatic and hydrological impact of LAPSI at global and regional scales. Finally we identify some research needs for reducing the uncertainties in the impact of LAPSI on global and regional climate and the hydrological cycle.

关键词： light-absorbing aerosol snow ice albedo measurement climate modeling hydrological cycle