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   13600篇
  免费   1119篇
  国内免费   25篇
耳鼻咽喉   187篇
儿科学   534篇
妇产科学   375篇
基础医学   1656篇
口腔科学   115篇
临床医学   1523篇
内科学   2430篇
皮肤病学   258篇
神经病学   1548篇
特种医学   329篇
外科学   1483篇
综合类   91篇
一般理论   20篇
预防医学   2115篇
眼科学   324篇
药学   808篇
  1篇
中国医学   15篇
肿瘤学   932篇
  2024年   47篇
  2023年   315篇
  2022年   475篇
  2021年   928篇
  2020年   536篇
  2019年   788篇
  2018年   853篇
  2017年   571篇
  2016年   590篇
  2015年   572篇
  2014年   714篇
  2013年   869篇
  2012年   1258篇
  2011年   1224篇
  2010年   591篇
  2009年   479篇
  2008年   775篇
  2007年   712篇
  2006年   546篇
  2005年   496篇
  2004年   405篇
  2003年   331篇
  2002年   252篇
  2001年   35篇
  2000年   24篇
  1999年   24篇
  1998年   41篇
  1997年   31篇
  1996年   19篇
  1995年   23篇
  1994年   20篇
  1993年   20篇
  1992年   13篇
  1991年   19篇
  1990年   8篇
  1989年   14篇
  1988年   5篇
  1987年   4篇
  1985年   7篇
  1984年   8篇
  1983年   8篇
  1982年   13篇
  1981年   7篇
  1980年   10篇
  1979年   4篇
  1978年   9篇
  1976年   5篇
  1974年   5篇
  1973年   4篇
  1972年   3篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
Maternal and Child Health Journal - To investigate whether adverse childhood experiences are associated with miscarriage. The Gulf Resilience on Women’s Health Consortium recruited from...  相似文献   
42.
Maternal and Child Health Journal - To describe characteristics and outcomes of Group Well-Child Care programs and provide recommendations for future research. Informed by Preferred Reporting Items...  相似文献   
43.
Maternal and Child Health Journal - Hypertensive disorders of pregnancy have lifelong implications on maternal cardiovascular health. Breastfeeding has a variety of maternal benefits, including...  相似文献   
44.
Anthropogenic environmental change will heavily impact cities, yet associated health risks will depend significantly on decisions made by urban leaders across a wide range of non-health sectors, including transport, energy, housing, basic urban services, and others. A subset of planetary health researchers focus on understanding the urban health impacts of global environmental change, and how these vary globally and within cities. Such researchers increasingly adopt collaborative transdisciplinary approaches to engage policy-makers, private citizens, and other actors in identifying and evaluating potential policy solutions that will reduce environmental impacts in ways that simultaneously promote health, equity, and/or local economies—in other words, maximising ‘co-benefits’. This report presents observations from a participatory workshop focused on challenges and opportunities for urban planetary health research. The workshop, held at the 16th International Conference on Urban Health (ICUH) in Xiamen, China, in November 2019, brought together 49 participants and covered topics related to collaboration, data, and research impact. It featured research projects funded by the Wellcome Trust’s Our Planet Our Health (OPOH) programme. This report aims to concisely summarise and disseminate participants’ collective contributions to current methodological practice in urban planetary health research.  相似文献   
45.

The Family Check-Up 4 Health (FCU4Health) is an adaptation of the Family Check-Up (FCU) for delivery in primary care settings. While maintaining the original FCU’s focus on parenting and child behavioral health, we added content targeting health behaviors. This study evaluated whether the adapted FCU maintained positive effects on parenting (positive behavior support, limit setting, parental warmth) and child behavioral health (self-regulation, conduct problems, emotional problems). Pediatric (6–12 years) primary care patients with a BMI?≥?85th%ile (n?=?240) were recruited from primary care clinics in Phoenix. Children were 75% Latino, 49% female, and 73% Medicaid recipients. This type 2 effectiveness-implementation hybrid trial compared families randomized to FCU4Health (n?=?141) or usual care (n?=?99). FCU4Health was delivered over a period of 6 months. This study focuses on a priori secondary outcomes included parenting and child behavioral health targets of the original FCU, assessed at baseline and 3, 6, and 12 months. Significant improvements were found for the FCU4Health condition, compared to usual care, in parenting from baseline to the 3-month assessment [β?=?.17 (.01; .32)]. Parenting predicted improvements in child self-regulation at 6-months [β?=?.17 (.03; .30)], which in turn predicted reductions in conduct problems [β?=?? .38 (? .51; ? .23)] and emotional problems [β?=?? .24 (? .38; ? .09)] at 12 months. Ethnicity and language of delivery (English or Spanish) did not moderate these effects. The FCU4Health can improve parenting and child behavioral health outcomes when delivered in primary care.

Trial Registration Trial registration number: NCT03013309 ClinicalTrials.gov

  相似文献   
46.

Previous studies have shown that engagement strategies can help increase enrollment and initiation of families in evidence-based preventive programs under natural service delivery settings. However, little is known about factors that predict completion of these engagement strategies. This study aimed to examine predictors (i.e., perceived need, perceived barriers, and sociocultural context) of caregiver participation in an evidence-based engagement call strategy. This call was expected to increase initiation into a school-based, family-focused prevention program. In addition, this study examined engagement call completion as a predictor of program initiation among already enrolled families. Participants included ethnically diverse families recruited from three Title I schools (n = 413) who were randomized to receive the prevention program. Results showed that interparental conflict—an indicator of perceived need—was associated with an increased likelihood of completing the engagement call. Furthermore, caregivers from low-socioeconomic status (SES), foreign-born, Spanish-speaking, Hispanic families were more likely to complete the call relative to those from low- and mid-SES, US born, English-speaking, ethnically diverse families. Importantly, engagement call completion was associated with an increased likelihood of program initiation. These findings provide limited support that families with higher perceived needs are more likely to participate in an evidence-based engagement call strategy. Results suggested that the call strategy provides a promising way to reduce attrition from family prevention programs, which is commonly observed between enrollment and initiation. Project Number: R01 DA035855; Date of Registration: 06/15/2014.

  相似文献   
47.
48.
Prevention Science - Involving youth in developing and implementing prevention programs to reduce sexual violence (SV) has the potential to improve prevention outcomes. However, there has been...  相似文献   
49.

Few studies have investigated mediator effects of HIV prevention interventions on adolescents in sub-Saharan Africa. Herein, we report on a secondary analysis of an intervention that increased intentions to use condoms, abstain from sexual intercourse, and seek safe male circumcision among adolescents in Botswana. In a study conducted in Botswana, 806 grade 9 students from 21 public Junior Secondary Schools were randomly assigned to either the OWN THE FUTURE: Pulling Together We Will” ( PTWW) intervention group or a health promotion control group. Both conditions consisted of 12 1-h modules, with two modules delivered during each of the six sessions on six consecutive school days. The students in both groups completed confidential computer-based surveys at several time points: pre-, immediately post-, 3, 6, and 12 months post-intervention. Mediation was assessed using the product-of-coefficients approach in a generalized estimating equations (GEE) framework. The analyses showed that condom use beliefs were significant mediators of the intervention effect on the intention to consistently use condoms over time. Also, negative socio-cultural beliefs, prevention beliefs, and HIV/STI knowledge were significant mediators of the intervention’s effects on the intention to abstain from sex. Additionally, normative beliefs, prevention beliefs, parental negotiation, and circumcision knowledge were significant mediators of the intervention’s effect on intention to seek safe male circumcision. The mediation analysis delineated a theoretical model and isolated activities that positively impact condom use, abstinence from sex, and circumcision intentions of Batswana middle school adolescents.

  相似文献   
50.
International Urology and Nephrology - Studies based on administrative databases show that infant pyeloplasty is associated with minority race/ethnicity but lack clinical data that may influence...  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