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Investigation of Galactic open cluster remnants： the case of NGc 7193

Research in Astronomy and Astrophysics 2017年第1期17卷 31-54页

作者： Mateus de Souza Angelo Joao Francisco coelho dos Santos jr Wagner Jose Barbosa corradi Francisco Ferreira de Souza Maia Andres Eduardo Piatti departamento de Fisica ICEx Universidade Federal de Minas Gerais Av. Antonio Carlos 6627 31270-901 Belo Horizonte MG Brazil Observatorio Astronomico Universidad Nacional de Cordoba Laprida 854 5000 Cordoba Argentina consejo Nacional de Investigaciones cientificas y Tecnicas Av. Rivadavia 1917 C1033AAJ Buenos AiresArgentina

Galactic open clusters （Ocs） that survive the early gas-expulsion phase are gradually de- stroyed over time by the action of disruptive dynamical processes. Their final evolutionary stages are characterized by a poorly populated concentration of stars called an open cluster remnant （OcR）. This study is devoted to assessing the real physical nature of the OcR candidate NGc 7193. GMOS/Gemini spectroscopy of 53 stars in the inner target region were obtained to derive radial velocities and at- mospheric parameters. We also employed photometric and proper motion data. The analysis method consists of the following steps：（i） analysis of the statistical resemblance between the cluster and a set of field samples with respect to the sequences defined in color-magnitude diagrams （cMds）; （ii） a 5-dimensional iterative exclusion routine was employed to identify outliers from kinematical and posi- tional data; （iii） isochrone fitting to thes× （J - Ks） cMd of the remaining stars and the dispersion of spectral types along empirical sequences in the （J - H） × （H - Ks） diagram were checked. A group of stars was identified for which the mean heliocentric distance is compatible with that obtained via isochrone fitting and whose metallicities are compatible with each other. Fifteen of the member stars observed spectroscopically were identified together with another 19 probable members. Our results indi- cate that NGc 7193 is a genuine OcR, of a once very populous Oc, for which the following parameters were derived： d = 501±46 pc, t = 2.5±1.2 Gyr, （[Fe/H]） = -0.17±0.23 and E（B-V） = 0.05±0.05. Its luminosity and mass functions show depletion of low mass stars, confirming the OcR is in a dynam- ically evolved state.

关键词： open cluster remnants - Galactic open clusters

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太平洋第四纪沉积和晚中新世沉积的碳酸盐时序:频谱对比

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海洋石油 1983年第2期 38-46页

作者： T.c.Moore. jr N.G.Pisias d.A.dunn 丁禾苏梦兰

赤道太平洋岩芯R c11—209的第四纪碳酸盐记录的离散几乎是同一地区dSdP158孔晚中新世岩芯记录离散的两倍。碳酸盐时序的频谱分析表明,中新世的碳酸盐记录主要由频率极低的组分组成,其离散密集在相当于周期大约400千年的频率上,第四纪... 详细信息

赤道太平洋岩芯R c11—209的第四纪碳酸盐记录的离散几乎是同一地区dSdP158孔晚中新世岩芯记录离散的两倍。碳酸盐时序的频谱分析表明,中新世的碳酸盐记录主要由频率极低的组分组成,其离散密集在相当于周期大约400千年的频率上,第四纪记录也以低频组分为主,但其离散密集在周期相当于100千年和40千年的频率上。互频谱分析表明,两种记录都与计算出的地球轨道偏心率的变化相关,并且表明,第四纪记录与计算出的地轴斜度记录相关。因而地球轨道参数的这些离散可以用来“调准”这两项记录的时标。根据400千年周期附近的两种记录中的离散的相似性以及观测到的碳酸盐波动与全球冰川体积变化之间的联系(如氧同位素测定所指出的)认为,占优势的400千年周期自从中新世形成时起就与北极冰帽的长期变动直接或间接地联系在一起。第四纪碳酸盐频谱的主要差别在于与100千年周期有关的频率处的离散值明显增大,这一增大被认为与北半球冰帽的冰期和间冰期变动直接或间接有关。

关键词：碳酸盐氧同位素碳化合物岩芯岩心晚中新世轨道偏心率太平洋大洋时序

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性骚扰对工程学是一种威胁

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科技纵览 2018年第11期 8-9页

作者： c.d.Mote jr. Sheila E.Widnall Ed Lazowska Nicole Xu(插图) 美国国国家工程院麻省理工学院航空工程学院比尔及梅琳达·盖茨基金会华盛顿大学不详

美国国家科学院发布的一项报告表明,性侵犯问题得不到解决,受伤害的将不仅仅是受害者本人。几十年来,工程学界一直在努力提高女性在大学和行业中的比例,但进展缓慢。在美国,仅有21%的工程学士学位授予女性,而且见习工程师中只有11%为女... 详细信息

美国国家科学院发布的一项报告表明,性侵犯问题得不到解决,受伤害的将不仅仅是受害者本人。几十年来,工程学界一直在努力提高女性在大学和行业中的比例,但进展缓慢。在美国,仅有21%的工程学士学位授予女性,而且见习工程师中只有11%为女性。虽然这个问题很复杂,但我们必须认识到性骚扰是一个影响因素,这导致了工程学教育和工作的环境充满恶意,女性不敢踏足该领域半步。权威研究表明,20%-50%的女大学生在大学期间受到过性骚扰。

关键词：工程学骚扰女大学生女性科学院受害者工程师美国

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除草剂污染堆肥用量对黄瓜生物有效性的影响

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中国蔬菜 2013年第9X期 67-71页

作者：王智中吕潇杜龙龙李彦明 Fredrick c. Michel jr. 中国农业大学资源与环境学院北京100193 俄亥俄州立大学食品农业与生物工程系美国韦斯特44691

化学除草已成为确保现代农业生产不可或缺的技术,但因除草剂会在非靶标植物中残留,进而导致堆肥和有机肥料产品被除草剂污染,为避免堆肥及其产品在不合理应用时对后茬植物的生长产生不良影响,造成不可挽回的损失,本试验采用市售基质、... 详细信息

化学除草已成为确保现代农业生产不可或缺的技术,但因除草剂会在非靶标植物中残留,进而导致堆肥和有机肥料产品被除草剂污染,为避免堆肥及其产品在不合理应用时对后茬植物的生长产生不良影响,造成不可挽回的损失,本试验采用市售基质、普通堆肥和受除草剂污染的堆肥为试材,设置无污染堆肥处理(c1)、氯氨吡啶酸污染堆肥处理(c2)和二氯吡啶酸污染堆肥处理(c3)3个处理,在0、5%、10%和20%堆肥不同用量条件下,以黄瓜的出苗率和播种后45d时植株的节间距、株高、茎粗、植株干质量、叶片数、叶面积、叶片卷曲情况和壮苗指数为评价指标。结果表明,受除草剂污染的堆肥对黄瓜种子的萌发有抑制作用,且堆肥用量越大,出苗率越低,而且黄瓜幼苗表现出严重的除草剂药害症状,植株纤弱,叶片狭小、卷曲。两种除草剂污染堆肥对黄瓜的影响呈现不同的规律,在堆肥用量相同的条件下,氯氨吡啶酸比二氯吡啶酸对黄瓜的药害严重,这表明越高效的除草剂随堆肥或有机肥的施用对后茬敏感植物的药害风险越大。

关键词：除草剂堆肥生物有效性

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各类型急性冠状动脉综合征的长期死亡率比较

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世界核心医学期刊文摘（心脏病学分册） 2007年第2期3卷 18-19页

作者： Allen L.A. O'donnell c.J. camargo jr. c.A. d.M. Lloyd-Jones 杜媛 department of Preventive Medicine Division of Cardiology Feinberg School of Medicine Chicago IL United States.Dr.

背景:比较各类型急性冠状动脉综合征(AcS)患者长期死亡率的资料较少。方法:作者对1991—1992年间在一所市级教学医院住院的所有疑似心肌缺血患者进行了甄别。比较不稳定型心绞痛(UA)、微小心肌损伤(MMd)、明确的非ST段抬高型心肌梗死(NS... 详细信息

背景:比较各类型急性冠状动脉综合征(AcS)患者长期死亡率的资料较少。方法:作者对1991—1992年间在一所市级教学医院住院的所有疑似心肌缺血患者进行了甄别。比较不稳定型心绞痛(UA)、微小心肌损伤(MMd)、明确的非ST段抬高型心肌梗死(NSTEMI)和STEMI患者的临床特征、治疗方法和长期死亡率。

关键词：心肌缺血患者不稳定型心绞痛教学医院血运重建治疗普通肝素肌损伤充血性心力衰竭一所协变量

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驯化君主

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丛书名：人文与社会译丛

2005年

作者：（美）哈维·c.曼斯菲尔德（Harvey c.Mansfield jr.）冯克利译

全书分执行权的史前史、发现执行权和宪政体制中的执行权三部分，系统地梳理了从亚里士多德《政治学》直到《联邦党人文集》的西方政治思想，考察了执行权学说的兴起及其发展演变。

ISBN: (数字)7806578943

ISBN: (纸本)7806578943

关键词：君主制研究

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老年人缺血性卒中后的血管事件、死亡率与预防性治疗

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世界核心医学期刊文摘(神经病学分册) 2006年第1期 45-46页

作者： Kaplan R.c. Tirschwell d.L. Longstreth jr. W.T. 郭中孟 department of Epidemiology and Population Health Belfer Building Albert Einstein College of Medicine 1300 Morris Park Avenue Bronx NY 10461 United States Dr.

Background:The authors studied mortality,vascular events, and preventive therapies following ischemic stroke among adults aged≥65 years. Methods: The authors identified 546 subjects with first ischemic stroke during 1989 to 2001 among cardiovascular Health Study participants. deaths, recurrent strokes, and coronary heart disease (cHd) events were identified over 3.2 years (median) follow-up. Results: during the first year of follow-up, rates were 105.4/1,000 for recurrent stroke and 59.3/1,000 for cHd. After the first year, the stroke rate was 52.0/1,000 and the cHd rate was 46.5/1,000. cardioembolic strokes had the highest mortality (185.4/1,000) and recurrence rates (86.6/1,000). Lacunar strokes had the lowest mortality (119.3/1,000) and recurrence rates (43.0/1,000). Age and male sex predicted death and cHd, but not recurrence. Outcomes did not differ by race. Following stroke, 47.8%used aspirin and 13.5%used other antiplatelet agents; 52.6%of patients with atrial fibrillation used warfarin; 31.3%of hyperlipidemic subjects, 57.0%of diabetic patients, and 81.5%of hypertensive patients were drug-treated; and 40.0%of hypertensive patients had blood pressure (BP) der subjects were less likely to use lipid-lowering therapy, women were less likely to have BP d low-income subjects were less likely to use diabetes medications. conclusions: Recurrent strokes were nearly twice as frequent as coronary heart disease (cHd) events during the first year after initial stroke, but stroke and cHd rates were similar after the first year. Preventive drug therapies were underused, which may reflect clinical uncertainty due to the lack of clinical trials among the elderly. Utilization was lower among the oldest patients, women, and low-income individuals.

关键词：缺血性卒中卒中后性治疗血管死亡率老年人

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Evolving concepts in bone infection: redefining “biofilm”,“acute vs. chronic osteomyelitis”, “the immune proteome” and “local antibiotic therapy”

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Bone Research 2019年第3期7卷 225-242页

作者： Elysia A. Masters Ryan P. Trombetta Karen L. de Mesy Bentley Brendan F Boyce Ann Lindley Gill Steven R. Gill Kohei Nishitani Masahiro Ishikawa Yugo Morita Hiromu Ito Sheila N. Bello-Irizarry Mark Ninomiya James d. Brodell jr. charles c. Lee Stephanie P. Hao Irvin Oh chao Xie Hani A. Awad John L. daiss John R. Owen Stephen L. Kates Edward M. Schwarz Gowrishankar Muthukrishnan center for Musculoskeletal Research University of Rochester Medical Center Rochester NY USA department of Biomedical Engineering University of Rochester Medical Center Rochester NY USA department of Pathology and Laboratory Medicine University of Rochester Medical Center Rochester NY USA department of Orthopaedics University of Rochester Medical Center Rochester NY USA department of Microbiology & Immunology University of Rochester Medical Center Rochester NY USA department of Orthopaedic Surgery Kyoto University Kyoto Japan department of Orthopaedic Surgery Virginia Commonwealth University Medical Center Richmond VA USA

Osteomyelitis is a devastating disease caused by microbial infection of bone. While the frequency of infection following elective orthopedic surgery is low, rates of reinfection are disturbingly high. Staphylococcus aureus is responsible for the majority of chronic osteomyelitis cases and is often considered to be incurable due to bacterial persistence deep within bone. Unfortunately, there is no consensus on clinical classifications of osteomyelitis and the ensuing treatment algorithm. Given the high patient morbidity,mortality, and economic burden caused by osteomyelitis, it is important to elucidate mechanisms of bone infection to inform novel strategies for prevention and curative treatment. Recent discoveries in this field have identified three distinct reservoirs of bacterial biofilm including: Staphylococcal abscess communities in the local soft tissue and bone marrow, glycocalyx formation on implant hardware and necrotic tissue, and colonization of the osteocyte-lacuno canalicular network(OLcN) of cortical bone. In contrast, *** intracellular persistence in bone cells has not been substantiated in vivo, which challenges this mode of chronic osteomyelitis. There have also been major advances in our understanding of the immune proteome against S. aureus, from clinical studies of serum antibodies and media enriched for newly synthesized antibodies(MENSA), which may provide new opportunities for osteomyelitis diagnosis, prognosis, and vaccine development. Finally, novel therapies such as antimicrobial implant coatings and antibiotic impregnated 3d-printed scaffolds represent promising strategies for preventing and managing this devastating disease. Here, we review these recent advances and highlight translational opportunities towards a cure.

关键词： disease caused by soft tissue necrotic tissuel

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以铂类为基础的辅助化疗治疗Ⅰ期子宫浆液乳头状癌(UPSc)的效果

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世界核心医学期刊文摘（妇产科学分册） 2006年第3期2卷 50-51页

作者： dietrich III c.S. Modesitt S.c. depriest P.d. J.R.Van Nagell jr. 李奎 division of Gynecologic Oncology Department of Obstetrics and GynecologyUniversity of Kentucky Medical Center 800 Rose Street Lexington KY 40536 United States

Objective. To determine the efficacy of adjuvant platinum-based chemotherapy in Stage I uterine papillary serous carcinoma (UPSc). Methods. A retrospective multi-institu-tional investigation was performed to identify surgically staged patients with Stage I UPSc who were (1) treated after surgery with 3-6 courses of platinum-based chemotherapy without radiation from 1990-2003, and (2) followed for a minimum of 12 months, or until recurrence. Results. Six patients (IA-2, IB-3, Ic-1) were treated with carboplatin (AUc 6) or cisplatin (50 mg/m2) alone. One patient recurred to the vagina, was treated with chemo-radiation, and is alive and well at 122 months. One patient recurred to the lung, liver, and brain, and died of disease at 24 months. The remaining 4 patients are alive with no evidence of disease 15-124 months (mean 62 months) after treatment. Two patients (IB-1, Ic-1) were treated with cisplatin (50 mg/m2) and cyclophosphamide (1000 mg/m2), and both are alive and well with no evidence of disease 75 and 168 months after treatment. Twenty-one patients (IA-5, IB-13, Ic-3) were treated with a combination of carboplatin (AUc 6)-and paclitaxel (135 mg/m2-175 mg/m2). One patient recurred to the vagina after 3 cycles of carboplatin/paclitaxel, and was treated with chemo-radiation. She is now without evidence of disease 10 months after treatment. At present, all 21 patients with Stage I UPSc treated following surgical staging with carboplatin/ paclitaxel chemotherapy are alive and well with no evidence of disease 10-138 months (mean 41 months) after treatment. conclusion. combination carboplatin/paclitaxel chemotherapy following surgery is effective in the treatment of Stage I UPSc.

关键词：浆液乳头状癌 UPSc 辅助化疗手术分期

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Materials science and engineering / 8th ed., SI Version.

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2011年

作者： callister William d. 1940-William d. callister jr david G. Rethwisch. Rethwisch david G.

来源：畅想之星图书光盘版（南... 评论

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