维普中文期刊产品整合服务
3096篇 您的检索式:作者名="Donovan"
    题名 作者 年代 出处 被引量
1基于时序NDVI的露天煤矿区土地损毁与复垦过程特征分析显示文摘露天煤矿区是人类活动强扰动地区之一。该文以阿巴拉契亚煤田区韦恩县为研究区域,应用遥感时序分析法分析了像元尺度的土地损毁和复垦过程特征。得出结论:1984-2010年间,韦兹县露天开采扰动区域占采矿权范围的45.80%,其中植被恢复区域占开采范围的66.45%,开采时间越早,植被恢复像元比例越高;开采造成的地表无植被覆盖期时长中位数为6 a,均值为7 a;已充分复垦的区域,NDVI值恢复至采前水平的加权平均时长为12 a。基于像元变化轨迹的研究,除揭示土地损毁-复垦过程特征外,能较好地反映空间异质性,可以为土地复垦管理和相关政策决策提供科学依据。李晶 Zipper Carl E. 李松 Donovan Patricia F. Wynne Randolph H. Oliphant Adam J. 夏清 2015农业工程学报2015,31,16:32
22018加拿大心境障碍与焦虑障碍治疗协作组/国际双相障碍学会指南:双相障碍的管理显示文摘加拿大心境障碍与焦虑障碍治疗协作组(Canadian Network for Mood and Anxiety Treatments,CANMAT)曾于2005年发布了第1版双相障碍管理指南,并分别于2007、2009和2013年对该指南进行了更新,其中最近的2次更新是与国际双相障碍学会(International Society for Bipolar Disorders,ISBD)合作完成。2018版CANMAT/ISBD双相障碍治疗指南(以下简称指南)反映了自2005年首版指南发表以来本领域取得的重大进展,包括疾病诊断与疾病管理的更新以及药物治疗与心理治疗的近期研究进展。这些前沿进展中综合考虑了循证证据的级别,并基于治疗疗效、临床实践经验、安全性、耐受性和药物导致的转相风险等,对一线、二线及三线治疗方案进行了简明而清晰的推荐。本指南中新增内容涵盖了双相Ⅰ型障碍(BD-Ⅰ)的躁狂发作急性期、抑郁发作急性期和双相障碍维持期的一线及二线治疗推荐等级划分。这种对治疗推荐等级的划分综合考虑了治疗方法对双相障碍不同时相的影响,将进一步帮助临床医生做出基于循证证据的治疗决策。锂盐、喹硫平、双丙戊酸盐、阿塞那平、阿立哌唑、帕利哌酮、利培酮和卡利拉嗪单药或联合使用被推荐为躁狂发作急性期的一线治疗选择。BD-Ⅰ抑郁期的一线治疗选择包括喹硫平、鲁拉西酮、锂盐、拉莫三嗪单药,鲁拉西酮联合锂盐或双丙戊酸盐或拉莫三嗪辅助治疗。尽管急性期治疗有效的药物通常应继续用于BD-Ⅰ的维持期治疗,但也存在一些特殊情况(例如抗抑郁药)。现有数据表明,锂盐、喹硫平、双丙戊酸盐、拉莫三嗪、阿塞那平和阿立哌唑单药或联合治疗应被视为维持治疗的初始或更换治疗方案时的一线选择。除了探讨BD-Ⅰ的相关问题外,本指南中还对双相Ⅱ型障碍(BD-Ⅱ)的临床管理进行了系统回顾并给予治疗推荐,同时针对特殊人群也有相关推荐,如处于各个生殖周期的女性、儿童、青少年和老年人。此外,本指南中还讨论了特定精神疾病及共病(如物质滥用、焦虑障碍和代谢性疾病)的影响。最后,本指南中概述了安全性和药物监测的相关问题。CANMAT/ISBD工作组希望本指南能够成为全球临床医生的实用工具。Lakshmi N Yatham Sidney H Kennedy Sagar V Parikh Ayal Sehaffer David J Bond Benicio N Frey Verinder Sharma Benjamin I Goldstein Soham Rej Serge Beaulieu Martin Alda Glenda MaeQueen Roumen V Milev Arun Ravindran Claire O'Donovan Diane Mclntosh Raymond W Lam Gustavo Vazquez Flavio Kapczinski Roger S Melntyre Jan Kozicky Shigenobu Kanba Beny Lafer Trisha Suppes Joseph R Calabrese Eduard Vieta Gin Malhi Robert M Post Michael Berk 胡晨(译) 王刚(译) 2019中华精神科杂志2019,52,1:25
3学术期刊的未来显示文摘科研成果若不发表成文 ,科研本身就是在浪费时间和金钱 ,所以科研论文必将存在。但学术期刊 (在大多数人眼里只是将论文装订成册 )是否会长期存在 ,人们却不十分确定。ALPSP的研究成果表明 ,科技论文的作者高度重视期刊的声誉、影响因子 ,以及同行对其质量的评价。他们认为好的期刊可成为领域内关注的焦点 ,并推动研究课题的发展。电子数据库或电子期刊不能代替印刷版期刊 ,这一点已经越来越明显。这不仅仅是因为作者希望看到自己的成果印刷在高品质的期刊上 ,还因为电子产品本身在长期保存上存在着许多问题。本文将要讨论的 ,就是上述这些问题和其他问题。学术论文首先是一种科研工具。它是科学站立的基石。若没有科研成果的发表 ,就没有科学的进步。科学论文经过几个世纪已发展成为现在的模式 ,虽然并不完美 ,但却能很好地为我们服务。我们不能简单地把学术期刊当作科研论文的装订册 ,因为它的内涵远不止于此。它既能让读者跟踪所在领域的研究进展、了解专家的研究领域、关注科研动态和研究的焦点 ,又能提供专业的知识积累。而且 ,它可成为某学术团体关注的焦点 ,以及用来判断同行的效率和竞争实力的工具。从长远来看 ,学术期刊不仅很好地跟踪了其专业领域的发展 ,还不时地影响着它的发展。Bernald Donovan 2000科技与出版2000,,2:19
465岁以上老年人预防跌倒的指南显示文摘老年人常常跌倒,这是一个严重的大众健康问题,对人们的健康及医疗花费有很大的影响。本指南依据试验证据,提出了在不同环境下切实可行的预防跌倒的建议。目的是减少65岁以上老人的跌倒率及跌倒后的损伤。Gene Feder Colin Cryer Sheila Donovan YvonneCater代表指南发展小组 周谋望 2003英国医学杂志中文版2003,6,4:15
5Simultaneous removal of ammonia and N-nitrosamine precursors from high ammonia water by zeolite and powdered activated carbon显示文摘When adding sufficient chlorine to achieve breakpoint chlorination to source water containing high concentration of ammonia during drinking water treatment, high concentrations of disinfection by-products(DBPs) may form. If N-nitrosamine precursors are present, highly toxic N-nitrosamines, primarily N-nitrosodimethylamine(NDMA), may also form. Removing their precursors before disinfection should be a more effective way to minimize these DBPs formation. In this study, zeolites and activated carbon were examined for ammonia and N-nitrosamine precursor removal when incorporated into drinking water treatment processes.The test results indicate that Mordenite zeolite can remove ammonia and five of seven N-nitrosamine precursors efficiently by single step adsorption test. The practical applicability was evaluated by simulation of typical drinking water treatment processes using six-gang stirring system. The Mordenite zeolite was applied at the steps of lime softening, alum coagulation, and alum coagulation with powdered activated carbon(PAC) sorption. While the lime softening process resulted in poor zeolite performance, alum coagulation did not impact ammonia and N-nitrosamine precursor removal. During alum coagulation, more than67% ammonia and 70%–100% N-nitrosamine precursors were removed by Mordenite zeolite(except 3-(dimethylaminomethyl)indole(DMAI) and 4-dimethylaminoantipyrine(DMAP)). PAC effectively removed DMAI and DMAP when added during alum coagulation. A combination of the zeolite and PAC selected efficiently removed ammonia and all tested seven N-nitrosamine precursors(dimethylamine(DMA), ethylmethylamine(EMA), diethylamine(DEA), dipropylamine(DPA), trimethylamine(TMA), DMAP, and DMAI) during the alum coagulation process.Runmiao Xue Ariel Donovan Haiting Zhang Yinfa Ma Craig Adams John Yang Bin Hua Enos Inniss Todd Eichholz Honglan Shi 2018Journal of Environmental Sciences2018,30,2:7
6Recent trends in liver transplantation for alcoholic liver disease in the United States显示文摘AIM To examine temporal changes in the indications for liver transplantation(LT) and characteristics of patients transplanted for alcoholic liver disease(ALD).METHODS We performed a retrospective cohort analysis of trends in the indication for LT using the United Network for Organ Sharing(UNOS) database between 2002 and 2015. Patients were grouped by etiology of the liver disease and characteristics were compared using χ~2 and t-tests. Time series analysis was used identifying any year with a significant change in the number of transplants per year for ALD, and before and after eras were modeled using a general linear model. Subgroup analysis of recipients with ALD was performed by age group, gender, UNOS region and etiology(alcoholic cirrhosis, alcoholic hepatitis and hepatitis C-alcoholic cirrhosis dual listing).RESULTS Of 74216 liver transplant recipients, ALD(n = 9400, 12.7%) was the third leading indication for transplant after hepatitis C and hepatocellular carcinoma. Transplants for ALD, increased from 12.8%(553) in 2002 to 16.5%(1020) in 2015. Time series analysis indicated a significant increase in the number of transplants per year for ALD in 2013(P = 0.03). There were a stable number of transplants per year between 2002 and 2012(linear coefficient 3, 95%CI:-4.6, 11.2) an increase of 177 per year between 2013 and 2015(95%CI: 119, 234). This increase was significant for all age groups except those 71-83 years old, was observed for both genders, and was incompletely explained by a decrease in transplants for hepatitis C and ALD dual listing. All UNOS regions except region 9 saw an increase in the mean number of transplants per year when comparing eras, and this increase was significant in regions 2, 3, 4, 5, 6, 8, 10 and 11.CONCLUSION There has been a dramatic increase in the number of transplants for ALD starting in 2013.Catherine E Kling James D Perkins Robert L Carithers Dennis M Donovan Lena Sibulesky 2017World Journal of Hepatology2017,9,36:6
7Plastid genome sequences of legumes reveal parallel inversions and multiple losses of rps16 in papilionoids显示文摘迄今为止,荚的公开可得到的质体染色体通常被限制了到亚科 Papilionoideae。这里,我们报导跨越所有三个亚科的荚的 13 个新质体染色体。代表 Caesalpinioideae 和 Mimosoideae 的染色体高度在基因内容和基因顺序被保存,类似于祖先的被子植物染色体组织。然而,在 Papilionoideae 以内的染色体首先在大单个拷贝区域在九个 intergenic 分隔符由于删除减少了尺寸。我们的学习也显示 rps16 独立地在荚被失去了至少五次,与在 papilionoids 之中散布的另外的基因和 intron 损失。另外,从在 papilionoids, Lupinus 和 Robinia 以内的二个不同的系的类,分别地有 36 和 39  kb 的平行倒置。当它看起来被 29 bp 重复在二 trnS 基因以内引起,这平行倒置是新奇的。这次重复在显示为在更多的种类在场的这倒置有潜力的所有可得到的荚质体染色体是在场的。homoplasious 倒置的这个案例也是一些倒置事件不能是可靠种系发生的标记的证据。Erika N. Schwarz Tracey A. Ruhlman Jamal S. M. Sabir Nahid H. Hajrah Njud S. Alharbi Abdulrahman L. AI-Malki C. Donovan Bailey Robert K. Jansen 2015Journal of Systematics and Evolution2015,53,5:5
8终末期肾病患者大血管和微血管内皮功能障碍与亚临床心功能不全的关系显示文摘终末期肾病(end-stagerenaldisease,ESRD)患者的心脏衰竭和心血管病死亡率较高,而我们对此缺乏深入透彻的了解,是否存在可变因素导致了这些高危患者发生心功能不全。为了评估血管内皮功能能否作为ESRD患者潜在的心功能不全的可变因素,研究人员应用横断面研究在一个控制良好的ESRD队列中,分析大血管和微血管功能障碍与左、右心功能不全的相关性。刘莉 叶鹏 Dubin RF Guajardo I Ayer A Mills C Donovan C Beussink L Scherzer R Ganz P Shah SJ 2016中华高血压杂志2016,24,9:5
9猪的回肠炎及其控制显示文摘Jim O Donovan 余春明 2002中国畜牧兽医2002,29,4:4
10澳大利亚人乳头状瘤病毒疫苗计划实施5年对年轻人群生殖器疣患病情况的影响:国家调查数据分析显示文摘目的评估2007年中开始的澳大利亚人乳头状瘤病毒(HPV)疫苗计划对生殖器疣患病情况的影响。设计国家调查数据趋势分析。数据来源数据收集于2004--2011年度澳大利亚8所性健康服务机构;其中2所最大的临床中心收集了自我报告的本中心2009年度HPV疫苗现状。研究对象2004--2011年度首次就诊的85770名澳大利亚出生的国民;其中7686(9.0%)名患生殖器疣。主要结局测量比较前疫苗时期(2004—2007年中)和疫苗时期(2007年中-2001年末)不同人群生殖器疣新发病率变化趋势。结果疫苗时期21岁以下和21~30岁女性诊断患有生殖器疣的比例明显下降,发病率分别从2007年度的11.5%和11.3%下降至2011年度的0.85%和3.1%,P均〈0.001。在30岁以上的女性中未发现发病率的明显下降。在21岁以下和21~30岁异性恋男性人群中疫苗时期生殖器疣的发病率较前疫苗时期明显下降,分别由2007年度12.1%和18.2%下降至2011年度2.2%和8.9%,P均〈0.001。30岁以上的异性恋男性人群中发病率无明显下降。2011年235名21岁以下女性在使用HPV疫苗后无新发生殖器疣病例。结论年轻女性生殖器疣发病率的显著下降和2011年度部分年轻女性使用疫苗后的零发病率,说明HPV疫苗获得实验室外的良好功效。异性恋男性生殖器疣发病率的显著下降可能是由于群体免疫所致。Hammad Ali,lecturer Basil Donovan, professor HandanWand,senior lecturer Tim R H Read, sexual health physician David G Regan,senior lecturer Andrew E Grulich, professor Christopher K FaMey, professor Rebecca J Guy, associate professor 尹婕(译) 潘凌亚(校) 2013英国医学杂志中文版2013,16,4:4
11Full-aperture backscatter diagnostics and applications at the Texas Petawatt Laser facility显示文摘C. Wang C. Wagner G. Dyer E. Gaul N. Kandadai N. Riley D. Kuk E. McCary A. Meadows I. Pomerantz M. Spinks T. Borger A. Bernstein M. Donovan M. Martinez T. Ditmire Bjorn M. Hegelich 2014Chinese Optics Letters2014,12,A02:4
12Effect of saxagliptin as add-on therapy in patients with poorly controlled type 2 diabetes on insulin alone or insulin combined with metformin显示文摘Anthony H. Barnett Bernard Charbonnel Mark Donovan Douglas Fleming Roland Chen 2012Current Medical Research & Opinion2012,,4:3
13KuaFu Mission显示文摘The KuaFu mission-Space Storms, Aurora and Space Weather Explorer-is an 'L1+Polar' triple satellite project composed of three spacecraft: KuaFu-A will be located at L1 and have instruments to observe solar EUV and FUV emissions, and white-light Coronal Mass Ejections (CMEs), and to measure radio waves, the local plasma and magnetic field,and high-energy particles. KuaFuB1 and KuaFu- B2 will bein polar orbits chosen to facilitate continuous 24 hours a day observation of the north polar Aurora Oval. The KuaFu mission is designed to observe the complete chain of disturbances from the solar atmosphere to geospace, including solar flares, CMEs, interplanetary clouds, shock waves, and their geo-effects, such as magnetospheric sub-storms and magnetic storms, and auroral activities. The mission may start at the next solar maximum (launch in about 2012), and with an initial mission lifetime of two to three years. KuaFu data will be used for the scientific study of space weather phenomena, and will be used for space weather monitoring and forecast purposes. The overall mission design, instrument complement, and incorporation of recent technologies will target new fundamental science, advance our understanding of the physical processes underlying space weather, and raise the standard of end-to-end monitoring of the Sun-Earth system.XIA Lidong TU Chuanyi Schwenn Rainer Donovan Eric Marsch Eckart WANG Jingsong ZHANG Yongwei XIAO Zuo 2006空间科学学报2006,26,z1:3
14The microbial content of unexpired pasteurized milk from selected supermarkets in a developing country显示文摘Objective:To determine the presence and levels of microbes in unexpired pasteurized milk from randomly selected supermarkets in Kingston,Jamaica.Methods:The quantitative study used a stratified random sampling technique in the selection of the 20 representative milk samples from six(6) supermarkets.Microbiological tests such as methylene blue reduction,standard plate count(SPC),coliform plate count(CPC),purity plate culture,gram staining and biochemical tests were performed to examine the microbes in purchased unexpired pasteurized milk.Results:One sample(BCr016) had a pH of 4.0.a rancid odour and curdled appearance.It decolourized within one hour during the methylene blue reduction test and was classified as class 4 milk.Seven of the samples were sterile with no microbe growth on the plate count agar and violet red bile salt agar(VRBA).The milk samples that appeared to be safe for consumption were all 10,11,12 and 13 days before expiration.The VRBA sample BCr016,had a colony count of 13 400 CFU/ mL.There was the presence of Escherichia coli in sample LCr021 which had a standard plate count of 1 580 SPC/mL and a coliform count of 500 CFU/mL.Enterobacter sp.was present in colonies from BCr016 and all the other milk samples.Conclusions:Unacceptable levels of Entembacter spp.and Escherichia coli were found in most of the samples.Effective measures to ensure safe milk for human consumption such as the phosphatase test and methylene blue reduction test should be routinely performed on each batch of milk processed by dairy plants.Melisa Anderson Patrice Hinds Stacyann Hurditt Princena Miller Donovan McGrowder Ruby Alexander-Lindo 2011Asian Pacific Journal of Tropical Biomedicine2011,1,3:3
15A RANDOMIZED TRIAL COMPARING TRANSURETHRAL RESECTION OF THE PROSTATE, LASER THERAPY AND CONSERVATIVE TREATMENT OF MEN WITH SYMPTOMS ASSOCIATED WITH BENIGN PROSTATIC ENLARGEMENT: THE CLasP STUDY显示文摘JENNY L. DONOVAN TIM J. PETERS DAVID E. NEAL SARA T. BROOKES SANDEEP GUJRAL K. NINAN CHACKO MARK WRIGHT L. GAIL KENNEDY PAUL ABRAMS 2000The Journal of Urology2000,,1:3
16Randomized crossover study comparing efficacy of transnasal endoscopy with that of standard endoscopy to detect Barrett’s esophagus显示文摘M. Kareem Shariff Elizabeth L. Bird-Lieberman Maria O'Donovan Zarah Abdullahi Xinxue Liu Jane Blazeby Rebecca Fitzgerald 2012Gastrointestinal Endoscopy2012,,5:2
17Volumetric measurement of rock movement using photogrammetry显示文摘NIOSH ground control safety research program at Spokane,Washington,is exploring applications of photogrammetry to rock mass and support monitoring. This paper describes two ways photogrammetric techniques are being used. First,photogrammetric data of laboratory testing is being used to correlate energy input and support deformation. This information can be used to infer remaining support toughness after ground deformation events. This technique is also demonstrated in a field application.Second,field photogrammetric data is compared to crackmeter data from a deep underground mine.Accuracies were found to average 8 mm,but have produced results within 0.2 mm of true displacement,as measured by crackmeters. Application of these techniques consists of monitoring overall fault activity by monitoring multiple points around the crackmeter. A case study is provided in which a crackmeter is clearly shown to have provided insufficient information regarding overall fault ground deformation.Photogrammetry is proving to be a useful ground monitoring tool due to its unobtrusiveness and ease of use.Benton Donovan J. Iverson Stephen R. Martin Lewis A. Johnson Jeffrey C. Raffaldi Michael J. 2016International Journal of Mining Science and Technology2016,26,1:2
18The prevalence and risk factors associated with esophageal varices in subjects with hepatitis C and advanced fibrosis <ce:link locator='fx1'/>显示文摘Arun J. Sanyal Robert J. Fontana Adrian M. Di Bisceglie James E. Everhart Michael C. Doherty Gregory T. Everson John A. Donovan Peter F. Malet Savant Mehta Muhammad Y. Sheikh Andrea E. Reid Marc G. Ghany David R. Gretch the HALT-C Trial Group 2006Gastrointestinal Endoscopy2006,,6:2
19Cryopreservation of eguine embryos by open pulled straw, cryoloop, or conventional slow cooling methods显示文摘Oberstein N O Donovan M K Bruemmer J E 2001Theriogenology2001,55,:2
20Mycogenic Silver Nanoparticles From Endophytic Trichoderma atroviride with Antimicrobial Activity显示文摘There is an increasing interest in developing nanoparticles with diverse biologic activities.To this end,we prepared 10 to 15 nm silver nanoparticles(AgNP)from native isolates of Trichoderma atroviride.Within this study,endophytic fungi hosted four medicinal plants in Saint Katherine Protectorate,South Sinai,Egypt have been isolated by surface sterilization technique on four isolation media.Ten species,based on their frequency of occurrence,out of twenty recovered taxa were tested for their capability to synthesize extracellular AgNPs.Trichoderma atroviride hosted Chiliadenus montanus was found to be the best candidate for the production of mycogenic AgNPs among all examined species.The mycosynthesized AgNPs were compared with chemically synthesized and characterized using Ultraviolet-visible(UV-vis)spectroscopy,Raman spectroscopy,X-ray diffraction(XRD)and high-resolution transmission electron microscopy(HRTEM)techniques.The HRTEM result showed the distribution of spherical AgNPs ranging from 10 to 15 nm.Trichoderma atroviride isolate was subjected to sequencing for confirmation of phenotypic identification.The internal transcribed spacer(ITS)1-5.8 s-ITS2 rDNA sequences obtained were compared with those deposited in the GenBank Database and registered with accession number MH283876 in the NCBI Database.Antibacterial,anticandidal and antifungal effects of chemically and mycosynthesized AgNPs were examined at various concentrations in vitro against six pathogenic bacteria and 4 pathogenic fungi by agar well diffusion technique.Standard antibiotics;Gentamicin,Amoxicillin,Clotrimazole,and Nystatin at 5μg/disk were taken as positive controls,while 5%DMSO was used as the negative control.Our data revealed that the application of mycogenic AgNPs at a concentration of 100 ppm resulted in maximum inhibition of pathogenic bacteria and fungi.These data suggest that AgNPs from native isolates of Trichoderma atroviride(MH283876)offer a source of rapid synthesis of eco-friendly,economical biomaterials that show antimicrobial activities.Ahmed Abdel-Azeem Amr A.Nada Anthonia O’Donovan Vijay Kumar Thakur Amr Elkelish 2020Journal of Renewable Materials2020,8,2:2
返回顶部 每页显示:
共155页 首页 上一页 第1页 下一页 末页 /155 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费