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   550篇
  免费   31篇
  国内免费   13篇
耳鼻咽喉   4篇
儿科学   25篇
妇产科学   4篇
基础医学   59篇
口腔科学   21篇
临床医学   39篇
内科学   102篇
皮肤病学   9篇
神经病学   36篇
特种医学   80篇
外国民族医学   1篇
外科学   101篇
综合类   10篇
预防医学   34篇
眼科学   2篇
药学   37篇
中国医学   3篇
肿瘤学   27篇
  2021年   3篇
  2020年   6篇
  2019年   8篇
  2018年   6篇
  2017年   10篇
  2016年   8篇
  2015年   7篇
  2014年   12篇
  2013年   16篇
  2012年   15篇
  2011年   11篇
  2010年   28篇
  2009年   21篇
  2008年   10篇
  2007年   24篇
  2006年   25篇
  2005年   22篇
  2004年   12篇
  2003年   12篇
  2002年   17篇
  2001年   15篇
  2000年   8篇
  1999年   16篇
  1998年   23篇
  1997年   19篇
  1996年   22篇
  1995年   15篇
  1994年   13篇
  1993年   9篇
  1992年   19篇
  1991年   12篇
  1990年   7篇
  1989年   16篇
  1988年   11篇
  1987年   13篇
  1986年   16篇
  1985年   12篇
  1984年   4篇
  1983年   3篇
  1982年   6篇
  1981年   5篇
  1980年   4篇
  1978年   6篇
  1977年   6篇
  1976年   9篇
  1975年   4篇
  1973年   6篇
  1972年   3篇
  1971年   5篇
  1969年   5篇
排序方式: 共有594条查询结果,搜索用时 15 毫秒
591.
BACKGROUND: The objective was to examine the association of self-reported Diagnostic and Statistical Manual-IV edition alcohol abuse and dependence with medical conditions among American Indians (AIs). METHODS: We analyzed data previously collected in a large epidemiological study of members of 2 culturally distinct AI tribes from the Southwest (SW; n = 1,446) and the Northern Plains (NP; n = 1,638) living on or near their reservations. Associations of combined self-reported alcohol abuse and alcohol dependence with 19 medical conditions were examined through multinomial logistic regression. RESULTS: Medical conditions that had significant relationships with alcohol abuse/dependence were sprains and strains [odds ratio (OR) 2.04, p < 0.001], hearing and vision problems (OR 2.05, p < 0.001), kidney and bladder problems (OR 1.55, p < 0.01), head injuries (OR 2.20, p < 0.001), pneumonia/tuberculosis (OR 1.49, p < 0.01), dental problems (OR 1.89, p < 0.001), and liver problems/pancreatitis (OR 2.18, p < 0.001). The total count of medical conditions was also significantly related to alcohol abuse/dependence, with a higher count being associated with the outcome (OR 1.17, p < 0.001). CONCLUSIONS: In this community-based study of rural AIs, diverse medical conditions were associated with alcohol abuse and dependence. Further research should examine, and confirm, the nature, extent, and tribal variation of the medical consequences of alcohol abuse and dependence in these unique populations.  相似文献   
592.
应用分析型超临界流体萃取测定苏合香丸中主要成分   总被引:8,自引:0,他引:8  
利用分析型超临界流体萃取技术和GC/MS,GC/FID非在线偶合的方法测定了中成药苏合香丸提取物中主要的挥发性组分及其含量。本工作对超临界流体动态萃取过程影响萃取效率的主要因素,如压力、流体流过样品的体积等进行了考察,确定了适宜的操作条件。与传统方法比较,本方法具有更多的优点。  相似文献   
593.

Purpose

To explore parents' experiences, preferences and information needs when either patching treatment or dichoptic action video gaming is used as an amblyopia treatment for their child.

Methods

A qualitative study was carried out on parents whose newly diagnosed amblyopic children participated in a randomised controlled trial (RCT) comparing the effects of dichoptic action video gaming versus patching. A purposive heterogenic sample was selected for an additional interview after the study period. Semi-structured interviews were conducted with one or both parents and transcribed verbatim, and a thematic analysis was performed.

Results

Ten families agreed to participate: seven in the patching group and three in the gaming group. Two themes emerged from the data exploring experiences with treatment: (1) factors influencing compliance and (2) burden with treatment. Parents reported creating a routine which improved compliance with patching, as opposed to gaming where parents felt less need to conduct the treatment themselves as it was performed in the outpatient clinic. In both groups, parents experienced an information hiatus regarding the role of refractive error. In deciding the type of treatment to be used, parents preferred to deliberate the choice with the healthcare professional and discuss considerations resulting in shared decisions. The emerging themes were (1) effect and efficiency of treatment, (2) organisational aspects of treatments and (3) their child's traits.

Conclusion

This study provides insight into the experiences of parents whose children underwent different types of amblyopia therapy. Both treatments have their own advantages and disadvantages. For parents, the effectiveness and efficiency of treatment were the most important aspects when deciding the method of management. Parents wish to come to a well-informed, shared decision regarding the type of amblyopia treatment.  相似文献   
594.

Aim

To assess the safety, tolerability, pharmacokinetics (PK) and pharmacodynamics (PD) of basal insulin Fc (BIF; LY3209590), a fusion protein combining a novel single-chain insulin variant together with human IgG2 Fc domain, following single and multiple once-weekly BIF administration.

Materials and Methods

The single ascending dose, 15-day study assessed four BIF doses (5-35 mg) in healthy participants and people with type 2 diabetes (T2D). In the 6-week multiple ascending dose study, people with T2D, previously treated with basal insulin, received insulin glargine daily or a one-time loading dose of BIF followed by 5 weeks of once-weekly dosing (1-10 mg). Safety, tolerability and PK and glucose PD were examined.

Results

Mean ages of people with T2D (N = 57) and healthy participants (N = 16) in the single-dose study were 58.4 and 35.8 years, respectively; mean body mass index values were 29.5 and 26.1 kg/m2. BIF had a PK half-life of approximately 17 days, which led to a sustained, dose-dependent decrease in fasting blood glucose for 5 days or longer. No severe hypoglycaemia was observed. The 6-week ascending dose study included 33 people with T2D aged 40-69 years. BIF showed a low peak-to-trough ratio of 1.14 after the last dose at week 6 (steady state). Over 6 weeks, BIF seven-point glucose profiles remained constant and were similar to insulin glargine. Rates and duration of BIF hypoglycaemic events were similar to insulin glargine.

Conclusions

BIF was well tolerated and the PK/PD profile enabled once-weekly dosing with minimal variation in exposure in a treatment interval of 1 week. The findings suggest BIF is suitable for further development as a weekly basal insulin in people with diabetes.  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