首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   214篇
  免费   4篇
  2022年   1篇
  2019年   2篇
  2018年   3篇
  2017年   2篇
  2016年   6篇
  2015年   1篇
  2014年   3篇
  2013年   80篇
  2012年   6篇
  2011年   8篇
  2010年   5篇
  2009年   5篇
  2008年   5篇
  2007年   7篇
  2006年   3篇
  2005年   8篇
  2004年   3篇
  2003年   5篇
  2002年   3篇
  2001年   2篇
  2000年   2篇
  1999年   1篇
  1997年   1篇
  1996年   1篇
  1995年   1篇
  1993年   3篇
  1992年   5篇
  1991年   4篇
  1990年   3篇
  1988年   1篇
  1985年   2篇
  1984年   4篇
  1983年   5篇
  1982年   3篇
  1981年   3篇
  1980年   1篇
  1979年   2篇
  1978年   3篇
  1977年   2篇
  1976年   1篇
  1975年   1篇
  1974年   2篇
  1973年   4篇
  1972年   2篇
  1971年   1篇
  1969年   1篇
  1968年   1篇
排序方式: 共有218条查询结果,搜索用时 15 毫秒
11.
While the links between contaminated sites and adverse effects on human health and well‐being are being increasingly recognised, some argue that the magnitude of the health problem is inadequately addressed because it is largely invisible. Health geographies literature has sought to highlight this invisibility by focusing on the link between contaminated sites and health. This study adds to health geographies by presenting unique insights into the geography of residents' worry about the disruptive effect of environmental contamination on health and well‐being. It analyses a sample of residents (n = 485) living near 13 contaminated sites across Australia. Ordinal logistic regression analysis of closed‐format survey questions was combined with coding of open‐ended survey questions to reveal the geography of residents' worry about contamination from nearby sites. First, the study explores some of the main relationships between residents, their environs, and contaminants from nearby source sites, which determines their levels of worry: residents' demographics, residents' proximity to sites, contaminant boundaries and borders, and type of contaminant. Second, the study investigates how worry affects residents' health and well‐being, ranging from effects on their personal functioning through to their sense of ontological security, which depends in part upon their perceptions of contaminants' impacts. Despite having identified a range of diverse and negative effects of worry about contamination on residents, we found that worry for contamination can also prompt coping strategies and problem‐solving, reinforcing the need for more research on this subject.  相似文献   
12.
13.
UK commercial radio was formally launched in October 1973 whenLBC went on air. Its sister station, IRN, began providing anews service at the same time for the growing number of ‘IndependentLocal Radio’ stations. During the period 1973–1996these two organisations assembled an archive of over 7,000 reel-to-reeltapes which now represent the largest commercial radio archivein Britain. For historians of the media, and of the twentiethcentury more generally, the collection is a rich and variedsource of social, cultural and political evidence. Media historians,including historians of journalism, can hear examples of a morepopulist and innovative style of reporting (or ‘reportage’)than was to be heard on the BBC. For the first time the phone-inwas an integral part of the schedule and a more opinionatedstyle of presentation was pioneered by Brian Hayes and others.The archive, soon to be digitised and made available online,contains a radio history of the period which started slightlybefore Margaret Thatcher's election as Leader of the ConservativeParty and finished a few years after the end of premiership.New clips, current affairs series like Decision Makers, parliamentarydebates (made by the LBC parliamentary unit) and phone-ins allcovered the major news stories of the time. There are, to takea notable example, 62 tapes on the Falklands War including 778individual news items. The archive is an important and hithertolargely neglected source for future historians of the period.  相似文献   
14.
This paper presents some of the basic principles of bone fracture physics and outlines characteristics used by forensic anthropologists to distinguish gunshot trauma from blunt trauma. The fracture pattern of a cranium from a historic cemetery in Memphis, Tennessee provides an example of how the mechanism of trauma could be misinterpreted. The pattern of the perimortem fractures is indicative of gunshot trauma with a bullet entering one side of the vault and impacting the opposite side. Identification of radiating fractures, concentric heaving fractures, and observation of the direction of bevel on the fractured surfaces are essential for interpretation of the mechanism that produced the injury.  相似文献   
15.
We report eight new accelerator-mass spectrometer (AMS) radiocarbon (14C) dates performed directly on individual bones of extirpated species from Crooked Island, The Bahamas. Three dates from the hutia (Geocapromys ingrahami), recovered from a culturally derived bone assemblage in McKay's Bluff Cave (site CR-5), all broadly overlap from AD 1450 to 1620, which encompasses the time of first European contact with the Lucayan on Crooked Island (AD 1492). Marine fish and hutia dominate the bone assemblage at McKay's Bluff Cave, shedding light on vertebrate consumption by the Lucayans just before their demise. A fourth AMS 14C date on a hutia bone, from a non-cultural surface context in Crossbed Cave (site CR-25), is similar (AD 1465 to 1645) to those from McKay's Bluff Cave. From Pittstown Landing (site CR-14), an open coastal archaeological site, a femur of the Cuban crocodile (Crocodylus rhombifer) yielded an AMS 14C date of AD ~1050–1250, which is early in the Lucayan cultural sequence. From a humerus in a non-cultural surface context in 1702 Cave (site CR-26), we document survival of the Cuban crocodile on Crooked Island until AD ~1300–1400, which is several hundred years later than the well-documented extinction of Cuban crocodiles on Abaco in the northern Bahamas. We lack a clear explanation of why Cuban crocodiles likely survived longer on Crooked Island than on a larger Bahamian island such as Abaco. One AMS 14C date on Crooked Island's extinct, undescribed species of tortoise (Chelonoidis sp.) from 1702 Cave is BC 790 to 540 (2740 to 2490 cal BP), which is ~1500–1700 years prior to human arrival. A second AMS 14C date, on a fibula of this tortoise from McKay's Bluff Cave, is AD 1025 to 1165, thereby demonstrating survival of this extinct species into the period of human occupation.  相似文献   
16.
17.
Walter Moxon, MD, FRCP lived, practiced medicine, taught and wrote in the mid- to late- nineteenth-century Victorian England, mostly at Guy's Hospital, London. He was widely informed in the "Art of Physic," writing on a range of issues from cerebral lateralization of articulate speech to angina pectoris. The present paper will trace briefly his contributions to the newly discovered asymmetry of articulate speech in the left frontal lobe (1866) and will in more detail trace and analyze his 1881 Croonian Lectures at the Royal College of Physicians on a medical shibboleth referred to as "congestion of the brain." In a series of ingenious and rhetorically creative arguments with imaginative tropes, demonstrations, evolutionary accounts of cognition and blood metabolism for human/biped cognition, and cogent citations from the medical literature of the day, Moxon skillfully instructs his medical audience against the misleading notion of cerebral "congestion" as an underlying pathology for cognitive, motor, and sensory deficits seen in the clinic. In so doing, he provides the medical community with an in-depth glimpse at the circulatory system, its flow dynamics, and how they serve to meet the cognitive, motor, and sensory demands of upright bipedal man.  相似文献   
18.
19.
20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号