全文获取类型
收费全文 | 6964篇 |
免费 | 680篇 |
国内免费 | 1篇 |
出版年
2022年 | 47篇 |
2021年 | 133篇 |
2020年 | 81篇 |
2019年 | 94篇 |
2018年 | 148篇 |
2017年 | 104篇 |
2016年 | 208篇 |
2015年 | 260篇 |
2014年 | 310篇 |
2013年 | 412篇 |
2012年 | 462篇 |
2011年 | 425篇 |
2010年 | 271篇 |
2009年 | 226篇 |
2008年 | 321篇 |
2007年 | 316篇 |
2006年 | 281篇 |
2005年 | 263篇 |
2004年 | 271篇 |
2003年 | 266篇 |
2002年 | 230篇 |
2001年 | 169篇 |
2000年 | 142篇 |
1999年 | 137篇 |
1998年 | 80篇 |
1997年 | 70篇 |
1996年 | 65篇 |
1995年 | 49篇 |
1994年 | 51篇 |
1993年 | 47篇 |
1992年 | 87篇 |
1991年 | 81篇 |
1990年 | 84篇 |
1989年 | 69篇 |
1988年 | 60篇 |
1987年 | 58篇 |
1986年 | 66篇 |
1985年 | 58篇 |
1984年 | 76篇 |
1983年 | 50篇 |
1982年 | 47篇 |
1978年 | 46篇 |
1977年 | 51篇 |
1976年 | 43篇 |
1975年 | 55篇 |
1974年 | 45篇 |
1973年 | 76篇 |
1972年 | 49篇 |
1971年 | 41篇 |
1970年 | 39篇 |
排序方式: 共有7645条查询结果,搜索用时 453 毫秒
1.
2.
3.
Clinical interest in the lipoproteins stems mainly from the association between serum cholesterol concentrations and coronary heart disease. Investigations of lipoproteins should be performed in patients with premature coronary heart disease, with a strong family history of coronary heart disease, or with certain cutaneous stigmata of hyperlipoproteinaemia and when fasting serum samples are seen to be lipaemic. Family studies should be performed in appropriate cases to identify relatives at increased risk of developing coronary heart disease. Patients with conditions known to cause secondary hyperlipoproteinaemia should be investigated if they fall into one of these categories but only after treatment of the underlying condition. Non-specialist laboratories should be able to measure total cholesterol and triglyceride concentrations and high density lipoprotein cholesterol concentrations. Lipoprotein electrophoresis has a limited role in such laboratories and is not necessary as a routine procedure. Specialist laboratories should in addition be able to measure individual lipoproteins and identify apolipoprotein E phenotypes. 相似文献
4.
Patricia A. Marshall 《Medical anthropology quarterly》1998,12(2):250-252
Sickness and Healing: An Anthropological Perspective. Robert A. Hahn. New Haven, CT: Yale University Press, 1995 (cloth and paper), viii. 327 pp. 相似文献
5.
6.
First appearing in 2000, and with 20,000 copies sold as it entered its sixth printing in 2004, Richard Trudgen's Why Warriors Lie down and Die is a minor publishing phenomenon. Although scholarly forums have generally ignored the book, Christian media outlets, the popular press and neo‐conservative political activists have enthusiastically received and promoted it. An examination of the merits of Why Warriors Lie down and Die suggests that its popularity is only partly explained by original observations or insights on the part of the author. The most important explanation, and implication, of the book's remarkable take‐up lies in the opportune way in which it corresponds with now ascendant neo‐conservative political perspectives on indigenous policy. 相似文献
7.
S. V. Marshall 《BMJ (Clinical research ed.)》1939,1(4079):535-536
8.
9.
Kate Jolly 《BMJ (Clinical research ed.)》1991,303(6804):716-717
10.
Controlled generation of reactive oxygen species orchestrates numerous physiological signaling events (Finkel, T. (2011) Signal transduction by reactive oxygen species. J. Cell Biol. 194, 7–15). A major cellular target of reactive oxygen species is the thiol side chain (RSH) of Cys, which may assume a wide range of oxidation states (i.e. −2 to +4). Within this context, Cys sulfenic (Cys-SOH) and sulfinic (Cys-SO2H) acids have emerged as important mechanisms for regulation of protein function. Although this area has been under investigation for over a decade, the scope and biological role of sulfenic/sulfinic acid modifications have been recently expanded with the introduction of new tools for monitoring cysteine oxidation in vitro and directly in cells. This minireview discusses selected recent examples of protein sulfenylation and sulfinylation from the literature, highlighting the role of these post-translational modifications in cell signaling. 相似文献