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   739篇
  免费   107篇
  2020年   7篇
  2018年   12篇
  2017年   6篇
  2016年   13篇
  2015年   20篇
  2014年   19篇
  2013年   25篇
  2012年   23篇
  2011年   31篇
  2010年   11篇
  2009年   15篇
  2008年   29篇
  2007年   27篇
  2006年   28篇
  2005年   22篇
  2004年   19篇
  2003年   35篇
  2002年   26篇
  2001年   22篇
  2000年   27篇
  1999年   15篇
  1998年   12篇
  1997年   13篇
  1995年   6篇
  1994年   9篇
  1993年   10篇
  1992年   21篇
  1991年   18篇
  1990年   13篇
  1989年   13篇
  1988年   13篇
  1987年   12篇
  1986年   20篇
  1985年   17篇
  1984年   17篇
  1983年   18篇
  1982年   11篇
  1981年   11篇
  1980年   12篇
  1979年   12篇
  1978年   10篇
  1977年   9篇
  1976年   7篇
  1972年   5篇
  1971年   8篇
  1969年   8篇
  1968年   6篇
  1967年   5篇
  1966年   7篇
  1925年   11篇
排序方式: 共有846条查询结果,搜索用时 988 毫秒
761.
Objective To obtain the views of women on the impact of operative delivery in the second stage of labour.Design Qualitative interview study.Setting Two urban teaching hospitals in the United Kingdom.Participants Purposive sample of 27 women who had undergone operative delivery in the second stage of labour between January 2000 and January 2002.Key themes Preparation for birth, understandings of the indications for operative delivery, and explanation or debriefing after birth.Results The women felt unprepared for operative delivery and thought that their birth plan or antenatal classes had not catered adequately for this event. They emphasised the importance of maintaining an open mind about the management of labour. They had difficulty understanding the need for operative delivery despite a review by medical and midwifery staff before discharge. Operative delivery had a noticeable impact on women''s views about future pregnancy and delivery.Conclusions Women consider postnatal debriefing and medical review important deficiencies in current care. Those who experienced operative delivery in the second stage of labour would welcome the opportunity to have a later review of their intrapartum care, physical recovery, and management of future pregnancies.  相似文献   
762.
763.
Immunopharmacology is a hybrid science which has been founded upon the principles, theory, and technical developments of both immunology and pharmacology, but which has a unique identity incorporating both basic and applied areas of research. Basic immunopharmacological research is concerned with the underlying mechanisms by which endogenous and synthetic chemicals interact with the cells of the immune system. Important areas of research include the actions of chemicals such as lymphokines, cytokines, complement, kinins, autacoids, drugs, and even neuropeptides on immune function. Applied immunopharmacology is concerned with the development and testing of new immunomodulatory drugs which will be of benefit to clinical medicine but also as basic research tools. In the past, the two fields of immunology and pharmacology have contributed to each other in many significant ways. Immunology has contributed to pharmacological research by the development of antibodies which are frequently used today as specific probes for the quantitative and qualitative analysis of many different classes of chemicals of interest. Pharmacology has contributed to the field of immunology by providing basic pharmacological information on subjects such as the mediators of hypersensitivity reactions and inflammation. In the future, the truly hybrid field of immunopharmacology promises to have an expanding role in clinical medicine and basic research. This prediction is based on the observation that recombinant lymphokines and newly discovered immunomodulatory substances have begun to enter the clinic in ever increasing numbers. Future immunopharmacological research will include the study of the pharmacology of these lymphokines but also the rational development of new drugs that act as antagonists or agonists for the endogenous lymphokines that normally regulate the immune response.(ABSTRACT TRUNCATED AT 250 WORDS)  相似文献   
764.
2H-NMR measurements of the ordering of several n-alkane and one n-alcohol solutes in lipid bilayers formed from dimyristoyl lecithin (DML) are reported. The results are consistent with orientation of the solutes between the lipid chains, the n-alkanes having a preference for the bilayer interior, while the n-octanol is anchored at the bilayer surface. Solubility of the short chain n-alkanes, n-hexane and n-octane as an ordered component in the Lα phase is more limited than that of n-dodecane. The NMR data are supported by low angle X-ray diffraction results which confirm that n-octanol has a more dramatic influence on bilayer area than the n-alkanes.  相似文献   
765.
766.
Erratum     
J. M. Pope 《Protoplasma》1995,188(3-4):277-277
  相似文献   
767.
768.
769.
770.
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