全文获取类型
收费全文 | 5628篇 |
免费 | 421篇 |
国内免费 | 219篇 |
专业分类
耳鼻咽喉 | 31篇 |
儿科学 | 63篇 |
妇产科学 | 76篇 |
基础医学 | 422篇 |
口腔科学 | 101篇 |
临床医学 | 447篇 |
内科学 | 746篇 |
皮肤病学 | 229篇 |
神经病学 | 155篇 |
特种医学 | 85篇 |
外科学 | 266篇 |
综合类 | 620篇 |
一般理论 | 1篇 |
预防医学 | 971篇 |
眼科学 | 70篇 |
药学 | 1326篇 |
2篇 | |
中国医学 | 535篇 |
肿瘤学 | 122篇 |
出版年
2024年 | 15篇 |
2023年 | 102篇 |
2022年 | 144篇 |
2021年 | 271篇 |
2020年 | 242篇 |
2019年 | 233篇 |
2018年 | 231篇 |
2017年 | 241篇 |
2016年 | 241篇 |
2015年 | 219篇 |
2014年 | 364篇 |
2013年 | 508篇 |
2012年 | 355篇 |
2011年 | 377篇 |
2010年 | 306篇 |
2009年 | 319篇 |
2008年 | 284篇 |
2007年 | 273篇 |
2006年 | 204篇 |
2005年 | 161篇 |
2004年 | 152篇 |
2003年 | 133篇 |
2002年 | 98篇 |
2001年 | 111篇 |
2000年 | 74篇 |
1999年 | 73篇 |
1998年 | 58篇 |
1997年 | 53篇 |
1996年 | 44篇 |
1995年 | 36篇 |
1994年 | 48篇 |
1993年 | 29篇 |
1992年 | 28篇 |
1991年 | 26篇 |
1990年 | 34篇 |
1989年 | 21篇 |
1988年 | 15篇 |
1987年 | 19篇 |
1986年 | 11篇 |
1985年 | 28篇 |
1984年 | 18篇 |
1983年 | 7篇 |
1982年 | 12篇 |
1981年 | 12篇 |
1980年 | 11篇 |
1979年 | 6篇 |
1978年 | 7篇 |
1976年 | 5篇 |
1972年 | 3篇 |
1970年 | 2篇 |
排序方式: 共有6268条查询结果,搜索用时 187 毫秒
1.
《Diabetes & Metabolic Syndrome: Clinical Research & Reviews》2019,13(2):1225-1229
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.
目的对当归不同炮制品中大肠埃希菌变化进行定量分析。方法建立荧光定量PCR方法,对当归不同炮制品、不同产地、不同收集企业、不同储藏时间的大肠埃希菌进行定量分析。结果不同炮制品中大肠埃希菌数量变化为生当归土炒当归酒当归;在不同产地的当归中以甘肃岷县地区所含的大肠埃希菌的数量最少;与零售企业相比,生产销售企业的当归和酒当归中大肠埃希菌的数量较少;不同储藏时间对当归和酒当归中大肠埃希菌数量有一定影响,随储藏时间的增加,大肠埃希菌的数量也在增加。对部分代表性样品进行平板计数法与荧光定量PCR法比较时发现,平板计数法结果多呈阴性,荧光定量PCR结果均呈阳性。结论所建立的荧光定量PCR法特异性、灵敏度、可靠性以及报告周期均优于平板计数法,可为当归不同炮制品中大肠埃希菌的快速、准确定量检测提供有效手段。 相似文献
4.
《Revista de gastroenterologia de Mexico》2019,84(3):357-371
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.
Stephen Hanessian 《ACS medicinal chemistry letters》2016,7(1):6-9
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.
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
10.
重组人生长激素降解产物的检测分析 总被引:1,自引:1,他引:0
本文详细介绍了S-B电导率模型确定泥质砂岩储层含水饱和度的基本原理以及相应参数的确定方法。用该方法处理了大庆地区的树131井、萨南5丁4-检132井及杏9丁3检134井的一些层位,并将求得的含水饱和度与岩心分析的含水饱和度进行了对比,吻合得比较好。这说明了应用S-B模型确定储层的含水饱和度是可行的,结果比较好。 相似文献