检索结果-南通市图书馆

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

1791，莫扎特的最后一年

Regional Copper Deficiency in White-Tailed Deer

作者： (美)H.C.罗宾斯·兰登(H.C.Robbins landon)

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

Open Journal of Ecology 2023年第1期13卷 9-21页

作者： Seth T. Rankins Randy W. DeYoung Aaron M. Foley Alfonso Ortega-S. Timothy E. Fulbright David G. Hewitt Clayton D. Hilton landon R. Schofield Tyler A. Campbell Caesar Kleberg Wildlife Research Institute Texas A&M University-Kingsville Kingsville USA Department of Animal Science and Veterinary Technology Texas A&M University-Kingsville Kingsville USA East Foundation Kingsville USA East Foundation San Antonio USA

Minerals are critical in maintaining health and physiological function in wildlife. Geographic variation in soil and forage mineral concentration may predispose wildlife to mineral imbalances, where a common symptom is restricted somatic growth. We investigated if mineral imbalances could explain localized differences in morphology of white-tailed deer (Odocoileus virginianus) occurring in geographically proximate sites with similar management, climate, and habitat. We collected serum samples and morphological measurements from free-ranging white-tailed deer captured during 2011-2019 from coastal and inland rangeland sites in South Texas, USA. We measured mineral concentrations in serum from captured deer at each location. Asymptotic deer body mass and antler size averaged 8% - 20% smaller for deer at the coastal compared to the inland site. The proportion of deer with deficient levels of serum copper was greater at the coastal site (66% versus 14%). Our results suggest regional mineral deficiencies in deer may limit antler and body development. Wildlife managers should be aware of all aspects of wildlife nutrition and the importance of considering nutrients beyond energy and protein.

关键词： Copper Minerals Nutrition Ungulates Serum White-Tailed Deer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

测定砂质河床水力传导系数的流入方法对比

水文地质工程地质技术方法动态 2002年第3期 14-14页

作者： MatthewK.landon

甘肃特种作物对气候暖干化的响应特征及适应技术

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国农学通报 2012年第15期28卷 112-121页

作者：邓振镛张强孙兰东王润元刘明春姚晓英徐金芳中国气象局兰州干旱气象研究所/甘肃省(中国气象局)干旱气候变化与减灾重点(开放)实验室兰州730020 甘肃省气象局兰州730020 西北区域气候中心兰州730020 武威市气象局甘肃武威733000 天水市气象局甘肃天水741000 甘肃省气象信息中心兰州730020

为了探讨气候暖干化对甘肃特种作物的响应特征,通过选取甘肃省80个气象站点1961—2010年的气象要素值计算和分析,以及采用田间试验和对比调查等研究方法。结果表明,暖干化是甘肃现代气候变化的基本特征。甘肃年平均气温气候倾向率均为正... 详细信息

为了探讨气候暖干化对甘肃特种作物的响应特征,通过选取甘肃省80个气象站点1961—2010年的气象要素值计算和分析,以及采用田间试验和对比调查等研究方法。结果表明,暖干化是甘肃现代气候变化的基本特征。甘肃年平均气温气候倾向率均为正值,年平均气温每10年增温0.29℃,温度升高1.4℃,其中1997年是突变年。≥0℃积温每10年增温40～80℃;年降水量自1961年以来呈持续下降趋势,降水距平百分率以每10年减少1.7%的速率递减。以黄河为界,以东呈减少趋势,每10年减少10～30 mm,以西呈增多趋势,每10年增加4～12 mm,减少的幅度明显高于增加的幅度;年平均日照以每10年下降9.8 h的速率递减。进入21世纪,气候暖干化的势头有所减缓。揭示了啤酒大麦、啤酒花、百合、花椒、油橄榄、板栗、黄花菜等7种特种作物的生长发育、种植区域、气象灾害、生物量、产量与品质等对现代气候暖干化的响应特征。初步认为,气候暖干化对特种作物的影响是多方面的、复杂的且利弊并重。并提出了制定精细化特种作物综合农业自然资源区划,确定精准的最适宜和适宜种植区范围,合理调整种植结构;在最适宜和适宜种植区内加快优质商品生产种植基地建设,创建特种作物现代农业发展模式和建立管理生产新模式适应气候变化;根据未来气候预测和不同气候年型调整作物种植结构和比例;加强气象灾害监测、评估、预警与防御工作等4个方面的措施应对气候暖干化。

关键词：甘肃特种作物气候暖干化响应特征适应技术

MFMU剖宫产登记:初次剖宫产后子宫收缩乏力

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

世界核心医学期刊文摘（妇产科学分册） 2006年第1期2卷 17-17页

作者： Rouse D. J. Leindecker S. landon M. 习艳霞(译) 高雪莲(校) Dr. D.J. Rouse Departments of Obstetrics and Gynecology Center for Research in Women's Health University of Alabama at Birmingham Birmingham AL United States 不详

The purpose of this study was to define independent risk factors for uterine atony after primary cesarean delivery, and to assess their overall association with atony in the study cohort. Study design: This was a 13- university center prospective observational study. All women who underwent primary cesarean from January 1, 1999 to December 31, 2000 were eligible. Trained and certified research nurses performed systematic data Abstraction. The definition of atony required both the clinical diagnosis and the use of methergine or a prostaglandin preparation. Risk factors for uterine atony were assessed in univariable and multivariable logistic regression analyses, and these analyses then used to inform an assessment of the association of the various risk factors with the occurrence of uterine atony in the overall cohort. Results: Twenty-three thousand, three hundred and ninety pregnancies were analyzed. Uterine atony occurred in 1416 women (6% ). Several variables were independently associated with atony in a multivariable model, including multiple gestation (odds ratio [OR] 2.40, 95% CI 1.95- 2.93), maternal Hispanic race (2.21, 1.90- 2.57), induced or augmented labor for >18 hours (2.23, 1.92- 2.60), infant birth weight >4500 g (2.05, 1.53- 2.69), and clinically diagnosed chorioamnionitis (1.80, 1.55- 2.09). However, because the various risk factors were not very powerful, approximately half of the cases of atony were associated with the 2/3 of women lacking a given risk factor or combination of risk factors. Conclusion: Although certain risk factors and uterine atony were clearly associated, the associations are of limited practical clinical use.

关键词：产后子宫收缩乏力剖宫产多元logistic回归分析初次独立危险因素婴儿出生体重队列研究系统培训观察性研究子宫收缩剂

Performance and calibration of quark/gluon-jet taggers using 140 fb^(-1) of pp collisions at √s=13 TeV with the ATLAS detector

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2024年第2期48卷 1-25页

作者： G. Aad B. Abbott K. Abeling N.J. Abicht S.H. Abidi A. Aboulhorma H. Abramowicz H. Abreu Y. Abulaiti B.S. Acharya C. Adam Bourdarios L. Adamczyk S.V. Addepalli M.J. Addison J. Adelman A. Adiguzel T. Adye A.A. Affolder Y. Afik M.N. Agaras J. Agarwala A. Aggarwal C. Agheorghiesei A. Ahmad F. Ahmadov W.S. Ahmed S. Ahuja X. Ai G. Aielli A. Aikot M. Ait Tamlihat B. Aitbenchikh I. Aizenberg M. Akbiyik T.P.A. Åkesson A.V. Akimov D. Akiyama N.N. Akolkar K. Al Khoury G.L. Alberghi J. Albert P. Albicocco G.L. Albouy S. Alderweireldt M. Aleksa I.N. Aleksandrov C. Alexa T. Alexopoulos F. Alfonsi M. Algren M. Alhroob B. Ali H.M.J. Ali S. Ali S.W. Alibocus M. Aliev G. Alimonti W. Alkakhi C. Allaire B.M.M. Allbrooke J.F. Allen C.A. Allendes Flores P.P. Allport A. Aloisio F. Alonso C. Alpigiani M. Alvarez Estevez A. Alvarez Fernandez M. Alves Cardoso M.G. Alviggi M. Aly Y. Amaral Coutinho A. Ambler C. Amelung M. Amerl C.G. Ames D. Amidei S.P. Amor Dos Santos K.R. Amos V. Ananiev C. Anastopoulos T. Andeen J.K. Anders S.Y. Andrean A. Andreazza S. Angelidakis A. Angerami A.V. Anisenkov A. Annovi C. Antel M.T. Anthony E. Antipov M. Antonelli F. Anulli M. Aoki T. Aoki J.A. Aparisi Pozo M.A. Aparo L. Aperio Bella C. Appelt A. Apyan N. Aranzabal S.J. Arbiol Val C. Arcangeletti A.T.H. Arce E. Arena J-F. Arguin S. Argyropoulos J.-H. Arling O. Arnaez H. Arnold G. Artoni H. Asada K. Asai S. Asai N.A. Asbah J. Assahsah K. Assamagan R. Astalos S. Atashi R.J. Atkin M. Atkinson H. Atmani P.A. Atmasiddha K. Augsten S. Auricchio A.D. Auriol V.A. Austrup G. Avolio K. Axiotis G. Azuelos D. Babal H. Bachacou K. Bachas A. Bachiu F. Backman A. Badea P. Bagnaia M. Bahmani A.J. Bailey V.R. Bailey J.T. Baines L. Baines O.K. Baker E. Bakos D. Bakshi Gupta V. Balakrishnan R. Balasubramanian E.M. Baldin P. Balek E. Ballabene F. Balli L.M. Baltes W.K. Balunas J. Balz E. Banas M. Bandieramonte A. Bandyopadhyay S. Bansal L. Barak M. Barakat E.L. Barberio D. Barberis M. Barbero M.Z. Barel K.N. Barends T. Barillari M-S. Barisits T. Barklow P. Baron D.A. Baron Mo The ATLAS Collaboration

The identification of jets originating from quarks and gluons,often referred to as quark/gluon tagging,plays an important role in various analyses performed at the Large Hadron Collider,as Standard Model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced *** paper describes the measurement of the efficiencies of quark/gluon taggers developed within the ATLAS Collaboration,using √s=13 TeV proton–proton collision data with an integrated luminosity of 140 fb^(-1) collected by the ATLAS *** taggers with high performances in rejecting jets from gluon over jets from quarks are studied:one tagger is based on requirements on the number of inner-detector tracks associated with the jet,and the other combines several jet substructure observables using a boosted decision tree.A method is established to determine the quark/gluon fraction in data,by using quark/gluon-enriched subsamples defined by the jet *** in tagging efficiency between data and simulation are provided for jets with transverse momentum between 500 GeV and 2 TeV and for multiple tagger working points.

关键词： ATLAS JET QUARK GLUON TAGGING