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   1129篇
  免费   67篇
  国内免费   3篇
耳鼻咽喉   3篇
儿科学   54篇
妇产科学   43篇
基础医学   119篇
口腔科学   2篇
临床医学   147篇
内科学   149篇
皮肤病学   29篇
神经病学   140篇
特种医学   84篇
外科学   122篇
综合类   14篇
一般理论   1篇
预防医学   147篇
眼科学   8篇
药学   81篇
肿瘤学   56篇
  2023年   10篇
  2022年   7篇
  2021年   30篇
  2020年   18篇
  2019年   48篇
  2018年   30篇
  2017年   30篇
  2016年   22篇
  2015年   32篇
  2014年   40篇
  2013年   56篇
  2012年   117篇
  2011年   101篇
  2010年   56篇
  2009年   38篇
  2008年   73篇
  2007年   97篇
  2006年   68篇
  2005年   57篇
  2004年   58篇
  2003年   49篇
  2002年   30篇
  2001年   6篇
  2000年   8篇
  1999年   8篇
  1998年   5篇
  1997年   4篇
  1996年   3篇
  1995年   4篇
  1994年   4篇
  1992年   4篇
  1991年   5篇
  1989年   6篇
  1988年   2篇
  1987年   5篇
  1986年   2篇
  1985年   2篇
  1984年   9篇
  1983年   9篇
  1981年   2篇
  1980年   2篇
  1979年   4篇
  1978年   5篇
  1977年   2篇
  1976年   5篇
  1975年   2篇
  1974年   3篇
  1973年   5篇
  1971年   2篇
  1969年   5篇
排序方式: 共有1199条查询结果,搜索用时 15 毫秒
1.
While peer support has been investigated in multiple clinical contexts, its application to the postpartum setting is unknown. The aim was to assess acceptability of a postpartum peer support program for women with diabetes. Observational survey-based needs assessment of forty low-income women with diabetes, receiving care at a major medical institution. Mean age and gravidity were 30.7 years and 3.15 ± 1.67 respectively. 45 % expressed interest in a “buddy.” There was no significant difference between groups desiring and not desiring this program. A majority of respondents desired telephone, text messaging, and in-person contacts (79.2, 72.1, 83.8 %), with 72.5 % of patients desiring diabetes-related activities during clinic waiting time. Many women desire a postpartum diabetes reciprocal peer program for support outside of clinician visits. Patients are receptive to educational services during their wait and outside of clinic time, a potentially valuable opportunity to share important health information.  相似文献   
2.
As the proportion of racial, ethnic, and cultural minorities in the United States continues to expand, pediatric emergency medicine providers are increasingly likely to encounter cultural and language barriers in practice. This paper reviews a conceptual framework encompassing the decision to seek emergency care, the process of providing such care, and the adherence to treatment plans and follow-up. The ways in which cultural and language barriers can negatively impact each element of this model are discussed in detail. Specific examples include provider ignorance of dangerous folk beliefs, communication barriers secondary to inappropriate interpreter use, and discriminatory assumptions regarding child abuse, pain management, and sexual activity. The practitioner is then provided with concrete recommendations to reduce these negative effects.  相似文献   
3.
While athletes’ nutrient intakes have been widely reported, few studies have assessed the diet quality of athletes. This is the first study to evaluate the diet quality of athletes using the purpose-built Athlete Diet Index (ADI). A convenience sample of 165 elite athletes from Australian sporting institutions completed the ADI online, with subsequent automated results provided to their respective accredited sports dietitians (ASDs). At the completion of athlete participation, ASDs (n = 12) responded to a range of survey items using a Likert scale (i.e., 1 = strongly agree to 5 = strongly disagree) to determine the suitability of the ADI in practice. Differences in ADI scores for demographics and sport-specific variables were investigated using independent t-tests, analysis of variance (ANOVA) and Bonferroni multiple comparisons. Spearman’s rank correlation was used to assess the association between total scores and demographics. The mean total ADI score was 91.4 ± 12.2 (range 53–117, out of a possible 125). While there was no difference in total scores based on demographics or sport-specific variables; team sport athletes scored higher than individual sport athletes (92.7 vs. 88.5, p < 0.05). Athletes training fewer hours (i.e., 0–11 h/week) scored higher on Dietary Habits sub-scores compared with athletes training more hours (≥12 h/week; p < 0.05), suggesting that athletes who train longer may be at risk of a compromised dietary pattern or less than optimal nutrition practices that support training. Most (75%) ASDs surveyed strongly agreed with the perceived utility of the ADI for screening athletes and identifying areas for nutrition support, confirming its suitability for use in practice.  相似文献   
4.
5.
Crystallographic and thermodynamic studies of farnesyl protein transferase (FPT) complexed with novel tricyclic inhibitors provide insights into the observed SAR for this unique class of nonpeptidic FPT inhibitors. The crystallographic structures reveal a binding pattern conserved across the mono-, di-, and trihalogen series. In the complexes, the tricycle spans the FPT active site cavity and interacts with both protein atoms and the isoprenoid portion of bound farnesyl diphosphate. An amide carbonyl, common to the tricyclic compounds described here, participates in a water-mediated hydrogen bond to the protein backbone. Ten high-resolution crystal structures of inhibitors complexed with FPT are reported. Included are crystallographic data for FPT complexed with SCH 66336, a compound currently undergoing clinical trials as an anticancer agent (SCH 66336, 4-[2-[4-(3,10-dibromo-8-chloro-6,11-dihydro-5H-benzo[5, 6]cyclohepta[1, 2-b]pyridin-11-yl)-1-piperidinyl]-2-oxoethyl]-1-piperidinecarbo xamide ). Thermodynamic binding parameters show favorable enthalpies of complex formation and small net entropic contributions as observed for 4-[2-[4-(3,10-dibromo-8-chloro-6,11-dihydro-11H-benzo[5, 6]cyclohepta[1, 2-b]pyridin-11-ylidene)-1-piperidinyl]-2-oxoethyl]pyridine N-oxide where DeltaH degrees bind = -12.5 kcal/mol and TDeltaS degrees bind = -1.5 kcal/mol.  相似文献   
6.
7.
8.
9.
The onset of crawling in infants contributes to cognitive, perceptual, social, and emotional development. Conversely, infants with motor impairment that delays or prevents autonomous mobility often have associated developmental delays. Evidence suggests that providing mobility may have positive developmental outcomes, however powered wheelchairs may not be recommended for very young children, due to safety concerns and the child’s level of cognitive maturity. The WeeBot is a mobility device controlled by infant weight shifting while seated; infants as young as 5 months have learned to use it. This study compares the efficacy of using the WeeBot vs. using the traditional manual joystick to control a robotic mobility device. Participants were 20 typically developing infants between 5 and 10 months who had not yet achieved independent mobility. A quasi-experimental two-group design was used: The first 10 participants recruited used the WeeBot (weight-shift); the next 10 used the joystick. Results showed that infants learned to use weight-shift control more easily and more skilfully than did infants using the joystick. The ability of infants to use the WeeBot suggests that an intuitive alternative control might allow very early powered mobility for children with disabilities, which might have implications for various aspects of their development.  相似文献   
10.
Objective. To determine whether and how pharmacy students used knowledge learned in the classroom during their introductory pharmacy practice experiences (IPPEs) in community and hospital settings.Design. To reinforce course concepts and make connections between coursework and practice, students documented examples of how knowledge from first-year courses was used in IPPEs.Assessment. Data submitted were categorized by classroom-based pharmacy course, including the frequency with which each course was cited. For community practice experiences, most student examples of knowledge application related to the self-care therapeutics course, pharmacy practice laboratory course, and dose form/compounding laboratory courses. Hospital IPPE examples were most frequently based on the pharmaceutical calculations course, physiology/pathophysiology course, medicinal chemistry course, and pharmacy practice laboratory course.Conclusion. All prior classroom-based pharmacy courses were cited by students as being useful during IPPEs, although some were more frequently cited than others. This activity provided useful programmatic assessment data.  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