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   232篇
  免费   13篇
  国内免费   28篇
耳鼻咽喉   1篇
儿科学   9篇
妇产科学   8篇
基础医学   13篇
口腔科学   3篇
临床医学   41篇
内科学   41篇
皮肤病学   2篇
神经病学   9篇
特种医学   24篇
外科学   16篇
综合类   9篇
预防医学   40篇
眼科学   4篇
药学   32篇
中国医学   3篇
肿瘤学   18篇
  2024年   1篇
  2023年   2篇
  2022年   10篇
  2021年   10篇
  2020年   6篇
  2019年   9篇
  2018年   6篇
  2017年   7篇
  2016年   3篇
  2015年   8篇
  2014年   11篇
  2013年   11篇
  2012年   7篇
  2011年   12篇
  2010年   7篇
  2009年   7篇
  2008年   9篇
  2007年   23篇
  2006年   14篇
  2005年   17篇
  2004年   4篇
  2003年   7篇
  2002年   6篇
  2001年   5篇
  2000年   4篇
  1999年   3篇
  1998年   3篇
  1997年   4篇
  1996年   9篇
  1995年   11篇
  1994年   1篇
  1993年   7篇
  1992年   2篇
  1991年   5篇
  1990年   4篇
  1989年   4篇
  1987年   3篇
  1986年   1篇
  1985年   1篇
  1983年   1篇
  1982年   2篇
  1981年   1篇
  1980年   3篇
  1978年   1篇
  1975年   1篇
排序方式: 共有273条查询结果,搜索用时 31 毫秒
1.
2.
Male genital oedema can be defined as swelling or the appearance of swelling of the scrotum and/or the penile shaft and prepuce. Despite the various causes of genital oedema reported in the published work, a concise approach to the evaluation and management has not been sufficiently addressed.  相似文献   
3.
4.
Maternal and Child Health Journal - Vietnam’s post-war globalization, economic development, and urbanization have contributed to a nutrition transition from traditional diets to...  相似文献   
5.
Polygonum multiflorum stilbeneglycoside (PMS) is a water-soluble fraction of Polygonum multiflorum Thunb. , one of the most famous tonic traditional Chinese medicines, that has protective effects on the cardiovascular system. The purpose of the present study is to elucidate the effects of PMS on macrophage-derived foam cell functions and the reduction of severity of atherosclerosis in hypercholesterolemic New Zealand White (NZW) rabbits. NZW rabbits were fed for 12 weeks with a normal diet, a high cholesterol diet, or a high cholesterol diet associated with irrigation with different doses of PMS (25, 50, or 100 mg/kg). Treatment of NZW rabbits fed with high cholesterol diet with 100 mg/kg PMS attenuated the increase in plasma cholesterol, low-density lipoprotein cholesterol, very low-density lipoprotein cholesterol, and plasma triglyceride. Treatment with 50 and 100 mg/kg PMS caused 43% and 60% decrease in atherosclerotic lesioned area ratio to total surface area, respectively. In U937 foam cells, PMS could decrease the high expression of intercellular adhesion molecule (ICAM)-1 protein and the vascular endothelial growth factor (VEGF) protein levels in the medium induced by oxidized lipoprotein when analyzed by flow cytometry. The results proved that PMS is a powerful agent against atherosclerosis and that PMS action could possibly be through the inhibition of the expression of ICAM-1 and VEGF in foam cells.  相似文献   
6.
ObjectiveTo determine the rate and factors associated with publication of plenary abstract presentations from the Society of Gynecologic Oncologists annual meeting.MethodsPlenary presentations were reviewed from 2000 to 2005. A PubMed search was performed to identify subsequent peer-reviewed publication of these presentations. Chi-squared test and logistic regression were used for statistical analyses.ResultsOf 378 main, focused or express plenary presentations, 173 (45.8%) involved multiple and 205 (54.2%) single institutions. The types of study include: chart review (29.4%), cohort study (28.0%), translational (23.5%), and randomized clinical trial (6.9%). 309 (81.7%) of presentations were subsequently published. The median time from presentation to publication was 14 months (range: 1–85). Studies from multiple vs. single institutions were more likely to be published (87.9% vs. 76.6%; p = 0.005). In addition, randomized controlled trials were more likely to be published compared with chart review, cohort, and translation research (92.3% vs. 83.8%, 77.4%, and 74.2%; p < 0.01). On multivariate analysis, multi-institutional studies (OR = 2.28, 95% CI = 1.28–4.04; p = 0.005) and type of study (OR = 1.64, 95% CI = 1.19–2.26; p = 0.002) were independent factors associated with publication. In addition, multi-institutional studies had longer times from presentation to publication compared with their counterparts.ConclusionsA high percentage of plenary presentations at the Society of Gynecologic Oncologists annual meeting resulted in subsequent publication. Multi-institutional studies and randomized clinical trials were more likely to be published.  相似文献   
7.
Nanotechnology has gained significant penetration to different fields of medicine including drug delivery, disease interrogation, targeting and bio-imaging. In recent years, efforts have been put forth to assess the use of this technology in biodetoxification. In this review, we will discuss the current status of nanostructured biomaterials/nanoparticle (NP)-based technologies as a candidate biodetoxifying agent. Patient hospitalization due to illicit drug consumption, suicidal attempts and accidental toxin exposure are major challenges in the medical field. Overdoses of drugs/toxic chemicals or exposure to bacterial toxins or poisons are conventionally treated by voiding the stomach, administering activated charcoal or by using specific antidotes, if the toxin is known. Because of the limitations of these methods for safe and effective detoxification, advancements in nanotechnology may offer novel ways in intoxication support by using nanostructured biomaterials, such as liposomes, micellar nanocarriers, liquid crystalline nanoassemblies and ligand-based NPs.  相似文献   
8.
9.
Background  HIV testing is cost-effective in unselected general medical populations, yet testing rates among those at risk remain low, even among those with regular primary care. HIV rapid testing is effective in many healthcare settings, but scant research has been done within primary care settings or within the US Department of Veteran’s Affairs Healthcare System. Objectives  We evaluated three methods proven effective in other diseases/settings: nurse standing orders for testing, streamlined counseling, and HIV rapid testing. Design  Randomized, controlled trial with three intervention models: model A (traditional counseling/testing); model B (nurse-initiated screening, traditional counseling/testing); model C (nurse-initiated screening, streamlined counseling/rapid testing). Participants  Two hundred fifty-one patients with primary/urgent care appointments in two VA clinics in the same city (one large urban hospital, one freestanding outpatient clinic in a high HIV prevalence area). Measurements  Rates of HIV testing and receipt of results; sexual risk reduction; HIV knowledge improvement. Results  Testing rates were 40.2% (model A), 84.5% (model B), and 89.3% (model C; p = <.01). Test result receipt rates were 14.6% (model A), 31.0% (model B), 79.8% (model C; all p = <.01). Sexual risk reduction and knowledge improvement did not differ significantly between counseling methods. Conclusions  Streamlined counseling with rapid testing significantly increased testing and receipt rates over current practice without changes in risk behavior or posttest knowledge. Increased testing and receipt of results could lead to earlier disease identification, increased treatment, and reduced morbidity/mortality. Policymakers should consider streamlined counseling/rapid testing when implementing routine HIV testing into primary/urgent care.  相似文献   
10.
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