全部文献期刊会议图书|学者科研项目
中外文文献  中文文献  外文文献
作者:... Michael P. Richards , Emily L. Lindsey , John M. Harris
来源:[J].Palaeogeography, Palaeoclimatology, Palaeoecology(IF 2.745), 2020, Vol.537
摘要:Abstract(#br)Sixteen taxa comprising extinct megafauna and extant species from a single asphalt deposit (Project 23, Deposit 1) at Rancho La Brea were isotopically analyzed (δ 13 C, δ 15 N, δ 34 S) and 14 C dated to investigate paleoecology and feeding behavior of terrestria...
作者:John M. Harris , Huaping Sun
来源:[J].Drug and Alcohol Dependence(IF 3.141), 2012, Vol.122 (3), pp.236-240
摘要:Abstract(#br)Background(#br)Efforts to enhance physician substance abuse (SA) management skills lack tools to assess skills and training effectiveness. We sought to develop an easily administered survey to assess SA fact-based skills and clinical decision-making.(#br)Methods...
作者:John M. Harris
来源:[J].Clinical Therapeutics(IF 2.23), 1997, Vol.19 (6), pp.1523-1531
摘要:Abstract(#br)On the surface, quality assurance and quality improvement appear to have similar objectives; however, the purpose of each is fundamentally different. This paper discusses these two frequently confused approaches to quality in health care, identifying the primary...
作者:John M. Harris , Aisling B. Farrell ...
来源:[J].Quaternary Geochronology(IF 4.015), 2014, Vol.22, pp.85-98
摘要:Abstract(#br)A novel protocol to purify bone collagen for radiocarbon dating and stable isotope ratio analysis from asphalt-impregnated skeletal remains stored in the George C. Page Museum of La Brea Discoveries (Los Angeles, California) is presented. This simple technique r...
作者:... Elaine Alpert , John M. Harris , Zita J. Surprenant
来源:[J].American Journal of Preventive Medicine(IF 3.945), 2005, Vol.30 (2), pp.173-180.e19
摘要:Background(#br)Intimate partner (domestic) violence (IPV) is a common problem in medical practice that is associated with adverse health outcomes. There are widespread calls to improve IPV education for physicians, but there are few valid, reliable, easily available, and com...
作者:Brian J. Melloy , John M. Harris , Anand K. Gramopadhye
来源:[J].International Journal of Industrial Ergonomics(IF 1.208), 2000, Vol.26 (2), pp.277-283
摘要:Abstract(#br)The predominant tasks in aircraft inspection are those that require visual search. Speed and accuracy characterize visual search tasks. Since the trade-off between speed and accuracy directly affects the safety, dependability and affordability of air transportat...
作者:John M. Harris , Thure E. Cerling ...
来源:[J].Palaeogeography, Palaeoclimatology, Palaeoecology(IF 2.745), 2003, Vol.205 (3), pp.199-219
摘要:Abstract(#br)We sampled 143 individuals from Rancho La Brea (RLB) large faunal collections for bone collagen stable carbon ( δ 13 C) and nitrogen ( δ 15 N) isotope ratios. These collections were recovered from asphalt seeps in the Los Angeles Basin, California, USA, and date...
作者:John M. Harris , Stanley H. Ambrose ...
来源:[J].Journal of Human Evolution(IF 4.094), 1997, Vol.33 (6), pp.635-650
摘要:Abstract(#br)Tooth enamel of nine Middle Miocene mammalian herbivores from Fort Ternan, Kenya, was analyzed for δ 13 C and δ 18 O. The δ 18 O values of the tooth enamel compared with pedogenic and diagenetic carbonate confirm the use of stable isotope analysis of fossil toot...
作者:Ronald J. Gould , John M. Harris
来源:[J].Discrete Mathematics(IF 0.578), 1999, Vol.203 (1), pp.101-120
摘要:Abstract(#br)Given a connected graph G , a family F of connected graphs is called a forbidden family if no induced subgraph of G is isomorphic to any graph in F . If this is the case, G is said to be F -free. In earlier papers the authors identified four distinct families of trip...
作者:John M. Harris , Mohamed B. Dhidha
来源:[J].Palaeogeography, Palaeoclimatology, Palaeoecology(IF 2.745), 2004, Vol.206 (3), pp.367-376
摘要:Abstract(#br)The similarity of δ 13 C and δ 15 N patterns in hairs of different individuals from the Tsavo East orphaned elephant herd indicates that a single hair represents the dietary preferences and behavior of the entire group. Multiple tail hairs from the same individu...

我们正在为您处理中,这可能需要一些时间,请稍等。

资源合作:cnki.scholar@cnki.net, +86-10-82896619   意见反馈:scholar@cnki.net

×