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   12438篇
  免费   1095篇
  国内免费   487篇
耳鼻咽喉   67篇
儿科学   160篇
妇产科学   248篇
基础医学   1984篇
口腔科学   226篇
临床医学   902篇
内科学   2173篇
皮肤病学   461篇
神经病学   423篇
特种医学   192篇
外国民族医学   2篇
外科学   692篇
综合类   1407篇
现状与发展   4篇
一般理论   1篇
预防医学   1261篇
眼科学   147篇
药学   2124篇
  8篇
中国医学   997篇
肿瘤学   541篇
  2024年   35篇
  2023年   222篇
  2022年   304篇
  2021年   661篇
  2020年   465篇
  2019年   435篇
  2018年   452篇
  2017年   486篇
  2016年   476篇
  2015年   520篇
  2014年   730篇
  2013年   1001篇
  2012年   713篇
  2011年   776篇
  2010年   685篇
  2009年   609篇
  2008年   597篇
  2007年   532篇
  2006年   458篇
  2005年   424篇
  2004年   380篇
  2003年   331篇
  2002年   291篇
  2001年   266篇
  2000年   205篇
  1999年   209篇
  1998年   196篇
  1997年   150篇
  1996年   153篇
  1995年   141篇
  1994年   155篇
  1993年   103篇
  1992年   98篇
  1991年   104篇
  1990年   84篇
  1989年   84篇
  1988年   55篇
  1987年   59篇
  1986年   51篇
  1985年   90篇
  1984年   56篇
  1983年   46篇
  1982年   38篇
  1981年   30篇
  1980年   21篇
  1979年   11篇
  1978年   11篇
  1977年   3篇
  1976年   6篇
  1972年   6篇
排序方式: 共有10000条查询结果,搜索用时 625 毫秒
1.
Background and objectivesThe present review shows a list of anti-glycation plants with their anti-glycation activity mechanisms that can attract the attention of pharmacologist for further scientific research towards finding better remedy for diabetic complications.MaterialsGoogle scholar, Pubmed, Web of Science and Scopus were searched. The terms were advanced glycation end products (AGEs), medicinal plants, antiglycation products.Resultsplants that studied in this review inhibit glycation in several possible mechanisms. Some of these plants inhibit the production of shiff base and amadori products. The others inhibit the generation of amadori products in the advanced phase. Some others blocked the aggregation of AGEs and some plants have antioxidant activity and reduce AGEs formation by preventing oxidation of amadori product and metal-catalyzed glucoxidation.ConclusionThis review can help pharmacologist to find antiglycation natural substance that can be useful in treatment of diabetic complications.  相似文献   
2.
3.
The invasive measurement of physiological pressures is a common requirement in anaesthesia and intensive care medicine. From arterial blood pressure to intracranial pressure, these calculated variables give a swift graphical and numerical representation of a patient's current physiological status. This allows us to respond rapidly to conditions outside our preferred parameters and to carefully titrate treatment to target effects. These systems are, however, not infallible. An understanding of the principles of their function will promote appropriate use and an ability to recognize and react to sources of error. This article aims to furnish the reader with this level of understanding in order to inform their academic and clinical practice.  相似文献   
4.
Milk is a liquid food that possesses an important quantity of highly bioavailable macronutrients. In addition, it is readily accessible, as well as relatively inexpensive. Given that the knowledge of physicians about nutrition and food composition is deficient, in general, many of the dietary interventions recommended in diverse clinical settings lack a scientific basis. The aim of the present review was to produce a technical opinion that serves as a frame of reference to best sustain recommendations for consuming milk and dairy products as daily nutrition in the adult and older adult. The effects of milk and dairy products during the pediatric stage are not addressed in the present work. The Asociación Mexicana de Gastroenterología and the Asociación Mexicana de Gerontología y Geriatría jointly discussed and analyzed topics dealing with the legal designation of milk, the classification and nutritional profile of cow's milk, its nutritional characteristics, its consumption in the adult, intolerance to cow's milk, and associations of milk consumption with digestive tract alterations and other conditions. Finally, certain aspects of milk consumption in the older adult and its relation to overall health are briefly discussed.  相似文献   
5.
6.
Current major advances in drug discovery can be traced back to pioneering contributions originating from academics over a century ago. Living in a symbiotic yet noninvasive coexistence, the academic community and the pharmaceutical industry have strived, each in their own way, to develop the modern medicines that benefit humankind today. The subject is presented from a historical and personal perspective.  相似文献   
7.
8.
采用免疫组织化学S-P法检测52例手术切除乳腺癌组织c-erbB-2蛋白和HSV-1、HSV-2表达情况。结果发现癌组织中c-erbB-2阳性34例(65.4%);HSV-1阳性38例(73.1%);HSV-2阳性15例(28.8%)。癌旁组织32例,阳性分别为3例(9.4%);12例(37.5%);2例(6.3%)。乳腺癌中c-erbB-2阳性率明显高于癌旁组织。乳腺癌及癌旁的HSV-1阳性率明  相似文献   
9.
拆方研究补中益气汤中黄芪 甘草及全方的免疫调节作用   总被引:11,自引:0,他引:11  
目的 检测补中益气汤中黄芪、甘草及全方对病态机体的免疫调节作用。方法 分 7组检测全方中黄芪、甘草及全方缺黄芪、缺甘草组方对利血平制备的脾虚小鼠的 5项非特异性免疫功能的影响进行研究。结果 黄芪能使Hb明显升高 ,单味甘草对某些免疫功能不起作用甚至起抑制作用 ,缺甘草组方作用低于全方 ,全方能明显提高机体免疫功能。结论 黄芪是方中主要升高Hb药物 ;方中甘草起到特殊的调节作用。  相似文献   
10.
Because of its neurocognitive enhancing effects, Gingko biloba has emerged as amongst the most commonly used herbal products. We report a liver transplant recipient with potentially life-threatening toxicity resulting from Gingko biloba use. Seven days after a second liver transplantation for recurrent hepatitisB virus infection, subphrenic hematoma was documented in a 59-year-old Korean patient. Failure to control bleeding with CT-guided drainage necessitated exploratory laparotomy for the evacuation of a large subphrenic hematoma. Three weeks later, an episode of vitreous hemorrhage was documented. Unbeknownst to his care providers, the patient had been consuming Gingko biloba throughout the postoperative period. No further bleeding episodes occurred after the cessation of Gingko biloba use. Unrecognized use of herbal products may be associated with serious side effects and adverse clinical sequelae in transplant recipients. Given their increasing popularity, the use of herbal products should be routinely sought as part of the history in transplant recipients.  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