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   303篇
  免费   10篇
  2023年   4篇
  2022年   1篇
  2021年   2篇
  2020年   10篇
  2019年   10篇
  2018年   6篇
  2017年   15篇
  2016年   17篇
  2015年   19篇
  2014年   8篇
  2013年   26篇
  2012年   18篇
  2011年   14篇
  2010年   16篇
  2009年   10篇
  2008年   6篇
  2007年   11篇
  2006年   16篇
  2005年   11篇
  2004年   7篇
  2003年   3篇
  2002年   9篇
  2001年   7篇
  2000年   2篇
  1999年   3篇
  1998年   3篇
  1997年   6篇
  1996年   6篇
  1995年   6篇
  1994年   6篇
  1993年   8篇
  1992年   4篇
  1988年   1篇
  1987年   1篇
  1985年   6篇
  1984年   5篇
  1983年   7篇
  1982年   1篇
  1980年   1篇
  1979年   1篇
排序方式: 共有313条查询结果,搜索用时 15 毫秒
311.
Growth curves were prepared for length and various other dimensions, including some innovative ones, of the scapula, clavicle, first rib, ilium, pubis and ischium of ages up to 20 years including several immature and many full-term fetuses. Most curves showed, like the previously reported diaphyses of the limb bones, what appears to be a consistent adolescent growth spurt at about 17 years, but the number of specimens supporting these parts of the curves is too small for the validity of this growth spurt to be beyond doubt. The fetal dimensions were similar to those of Fazekas and Kósa and of other recent populations. For the post-natal stages of growth, no data are available for comparison but there was close correspondence with the growth curves of some ancient peoples, Amerindian, caucasoid and negroid, whose limb-bone growth rates had also been shown previously to be well below those of contemporary caucasoids. Thus it is argued that the shoulder-girdle and hip-bone data provided further evidence that this Scottish island population was affected by stunting factors. Although there is no skeletal evidence of malnutrition, there is plenty of evidence that the way of life was full of hardship in which the children shared. They took a full part in the arduous work involved in farming marginal-quality land; the houses were damp, cold, smoky and dark; they were overcrowded although, mainly because of the high infantmortality rate, families were not large.  相似文献   
312.
ABSTRACT The immunological identification of species-specific blood proteins in skeletal remains has an important role in the reconstruction of ancient dietary, ritual and domestic behaviour. However, which protein provides the most suitable target for such work has not been considered previously, and the present investigation was carried out on human bone to assess the relative merits of IgG and albumin. Extracts of bone from 31 individuals (from the English Civil War, medieval, Early Saxon, Roman, Iron Age and Bronze Age periods) were tested by an enzyme-linked immunosorbent assay (ELISA) using monoclonal antibodies. Albumin was detected in 23 of the 31 skeletons, including those from the Iron and Bronze Ages, whereas IgG was identified in only one; this difference was very highly significant (P < 0.0005, χ2 30.0). The better detection rate for albumin was thought to be due to its higher original blood level, inherent differences in survival pattern being considered unlikely. Testing the same extract for both proteins in the same assay system ensured that any effects due to soil factors, burial conditions, physical integrity of the bone, chronological age, amount of original specimen, method of analysis and type of reagent were the same for each part of the study, thus permitting a valid comparison of antigen survival to be made. Control samples, including fresh and ancient animal bone extracts and human and animal sera, confirmed that the results were consistent and specific, with no cross-reactivity between human and animal material, and that as little as 10 ng of protein was detectable. In summary, the investigation compared the suitability of IgG and albumin for osteoarchaeological studies using a highly specific, sensitive and versatile ELISA; the results showed that albumin was a far better target molecule for such work and that it can survive in ancient bone for long periods of time.  相似文献   
313.
A cholesteatoma is a collection of dead epithelial cells in the ear which becomes infected with low‐grade pathogenic microorganisms. The lesion tends to cause resorption of the surrounding bone, which potentially permits its recognition in skeletal remains. Cholesteatoma may occur in the middle or the outer ear. Using two examples of cholesteatoma in skeletal remains from British archaeological sites, the differential diagnosis of cholesteatoma from other aural diseases is demonstrated. Some of the differences in bony lesions caused by middle ear and external ear canal cholesteatoma which may enable the two to be distinguished in palaeopathological specimens are discussed. Attention is drawn towards the importance of making this distinction in ancient skeletal remains; middle ear and external ear canal cholesteatoma have a different array of causes and very different impacts upon health status. Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   
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