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   363篇
  免费   20篇
耳鼻咽喉   1篇
儿科学   7篇
妇产科学   18篇
基础医学   37篇
口腔科学   4篇
临床医学   53篇
内科学   95篇
皮肤病学   15篇
神经病学   19篇
特种医学   11篇
外科学   35篇
综合类   2篇
预防医学   35篇
眼科学   7篇
药学   24篇
中国医学   1篇
肿瘤学   19篇
  2023年   5篇
  2022年   12篇
  2021年   17篇
  2020年   11篇
  2019年   17篇
  2018年   20篇
  2017年   8篇
  2016年   12篇
  2015年   9篇
  2014年   11篇
  2013年   24篇
  2012年   34篇
  2011年   31篇
  2010年   22篇
  2009年   15篇
  2008年   19篇
  2007年   27篇
  2006年   23篇
  2005年   18篇
  2004年   16篇
  2003年   13篇
  2002年   3篇
  2001年   4篇
  1998年   1篇
  1997年   1篇
  1996年   2篇
  1992年   1篇
  1990年   3篇
  1988年   1篇
  1987年   1篇
  1986年   1篇
  1976年   1篇
排序方式: 共有383条查询结果,搜索用时 78 毫秒
11.
This study examined relationships between cognitive and emotional processing with changes in pain and depression among intimate partner violence survivors. Twenty-five women who wrote about their most traumatic experiences completed measures of pain and depressive symptoms before the first writing session and again 4 months following the last writing session. Reduced pain was significantly associated with less use of positive and negative emotion words. Relationships between cognitive and emotional aspects of writing with changes in depressive symptoms fell short of statistical significance. The results suggest that emotional processing in narrative writing predicts changes in pain in intimate partner violence survivors.  相似文献   
12.
Ten medicinal plants extracts were pharmacologically screened for their cardiac activity on isolated rabbit heart, and showed significant negative inotropic activity with negative chronotropic effects. In all cases alcohol dried extracts were used and reconstituted in either water or ethyl acetate for these tests. The plant extracts which produced cardiac depression were Cactus grandiflora , Carissa carandas Linn., Duranta repens Linn., Eclipta prostrata Roxb., Heliotropium ophioglossum , Prosopis glandulosa , Scheweinfurthia sphaerocarpa A. Br., Solanum surattense Burm. f., Tephrosia uniflora Pers., Nardostachys jatamansi Dc. (Syn. Valeriana jatamansi ).  相似文献   
13.
14.
15.
16.
17.
Promoter methylation-mediated silencing is a hallmark of many established tumor suppressor genes. This review focuses on the methylation and suppression of a receptor-type tyrosine phosphatase gene, PTPRO, in a variety of solid and liquid tumors. In addition, PTPRO exhibits many other characteristics of a bona fide tumor suppressor. Reactivation of genes silenced by methylation using inhibitors of DNA methyltransferases and histone deacetylases, and the potential application of PTPRO as a molecular target for cancer therapy have been discussed.  相似文献   
18.
We report a case of multiple colonic perforations in a 5-year-old boy due to typhoid fever. The main objective is to present the occurrence of this complication and discuss the management. The patient was admitted with nine days history of high-grade fever and abdominal pain. On examination, he was very sick looking child with acute abdomen. After initial workup and resuscitation, laparotomy was performed which revealed multiple colonic perforations with feacal peritonitis. The case revealed that one must not forget to inspect entire intestine including colon, as there may be perforations present in the large bowel.  相似文献   
19.
Celecoxib, a specific inhibitor of cycloxygenase-2 (COX-2) is a poorly water-soluble nonsteroidal anti-inflammatory drug with relatively low bioavailability. The effect of beta-cyclodextrin on the aqueous solubility and dissolution rate of celecoxib was investigated. The possibility of molecular arrangement of inclusion complexes of celecoxib and beta-cyclodextrin were studied using molecular modeling and structural designing. The results offer a better correlation in terms of orientation of celecoxib inside the cyclodextrin cavity. Phase-solubility profile indicated that the solubility of celecoxib was significantly increased in the presence of beta-cyclodextrin and was classified as AL-type, indicating the 1:1 stoichiometric inclusion complexes. Solid complexes prepared by freeze drying, evaporation, and kneading methods were characterized using differential scanning calorimetry, powder x-ray diffractometry, and scanning electron microscopy. In vitro studies showed that the solubility and dissolution rate of celecoxib were significantly improved by complexation with beta-cyclodextrin with respect to the drug alone. In contrast, freeze-dried complexes showed higher dissolution rate than the other complexes.  相似文献   
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