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   5312篇
  免费   517篇
  国内免费   17篇
耳鼻咽喉   50篇
儿科学   233篇
妇产科学   174篇
基础医学   689篇
口腔科学   132篇
临床医学   575篇
内科学   1121篇
皮肤病学   85篇
神经病学   518篇
特种医学   120篇
外科学   530篇
综合类   181篇
一般理论   8篇
预防医学   733篇
眼科学   73篇
药学   266篇
中国医学   1篇
肿瘤学   357篇
  2024年   9篇
  2023年   82篇
  2022年   123篇
  2021年   281篇
  2020年   162篇
  2019年   246篇
  2018年   272篇
  2017年   168篇
  2016年   155篇
  2015年   182篇
  2014年   297篇
  2013年   351篇
  2012年   508篇
  2011年   505篇
  2010年   255篇
  2009年   203篇
  2008年   327篇
  2007年   337篇
  2006年   281篇
  2005年   270篇
  2004年   218篇
  2003年   180篇
  2002年   186篇
  2001年   42篇
  2000年   29篇
  1999年   13篇
  1998年   18篇
  1997年   14篇
  1996年   11篇
  1995年   11篇
  1994年   6篇
  1993年   14篇
  1992年   6篇
  1990年   5篇
  1989年   4篇
  1987年   3篇
  1986年   5篇
  1985年   4篇
  1984年   7篇
  1983年   7篇
  1982年   8篇
  1980年   6篇
  1978年   3篇
  1975年   2篇
  1973年   2篇
  1972年   4篇
  1971年   2篇
  1969年   2篇
  1967年   3篇
  1936年   4篇
排序方式: 共有5846条查询结果,搜索用时 15 毫秒
101.
AIDS and Behavior - This scoping review assessed how the term ‘self-management’ (SM) is used in peer-reviewed literature describing HIV populations in low- and middle-income countries...  相似文献   
102.
AIDS and Behavior - Adherence to care and antiretroviral therapy is challenging, especially for people living with HIV (PLWH) with additional co-occurring risk factors. Case management...  相似文献   
103.
AIDS and Behavior - While pre-exposure prophylaxis (PrEP) is a key HIV prevention tool for adolescents and young adults (AYAs), its initiation and sustained use is shaped by AYAs’ unique...  相似文献   
104.
105.
106.
ABSTRACT

This study evaluated the feasibility and efficacy of integrating mindfulness training into a phone-based weight loss program to improve outcomes in those with high levels of emotional eating. Participants were 75 enrollees into an employer-sponsored weight loss program who reported high levels of overeating in response to thoughts and feelings. Seventy-five overweight and obese participants (92% female, 65% Caucasian, aged 26 to 68 years) were randomized to the new mindfulness weight loss program (n = 50) or the standard behavioral weight loss program (n = 25). Both programs consisted of 11 coaching calls with health coaches and registered dietitians with supplemental online materials. Satisfaction, engagement, and percent weight lost did not significantly differ for intervention vs. control at six months. Intervention participants had significantly better scores at six-month follow-up on mindful eating, binge eating, experiential avoidance, and one mindfulness subscale. Exploratory analyses showed that improvements on several measures predicted more weight loss in the intervention group. This pilot study found that integrating mindfulness into a brief phone-based behavioral weight loss program was feasible and acceptable to participants, but did not produce greater weight loss on average, despite hypothesized changes in mindful eating. Only one third of intervention participants reported participating in mindfulness exercises regularly. Mechanisms of change observed within the intervention group suggest that for adults with high levels of emotional eating those who embrace mindful eating and meditation may lose more weight with a mindfulness intervention.  相似文献   
107.
PURPOSETo assess the effects of three-dimensional image-guided brachytherapy (3D BT) compared to bi-dimensional BT (2D BT) on clinical outcomes in patients with cervical cancer.METHODS AND MATERIALSWe searched PubMed/MEDLINE, EMBASE, Scopus, CENTRAL, Web of Science, and LILACS for studies assessing the effects of 3D BT versus 2D BT on clinical outcomes. Two reviewers independently screened retrieved citations, extracted data and assessed risk of bias from eligible studies. Hazard ratios (HR) were calculated from Kaplan-Meier curves considering the number of events, their timing and the followup of censored patients. We conducted meta-analyses of HR using the inverse-variance random-effects method. Risk Difference (RD) for toxicities were pooled using the Mantel–Haenszel random-effects method. We used the GRADE system to rate the certainty of evidence.RESULTSTwenty observational studies involving 4287 patients were included. The meta-analyses assessing the effect of 3D BT versus 2D BT on overall survival resulted in a HR of 0.78 (95%CI 0.62–0.98), HR of 0.75 (95%CI 0.62–0.90) for pelvic disease-free survival, HR of 0.93 (95%CI 0.81–1.06) for metastatic disease-free survival, and HR of 0.77 (95%CI 0.59–0.99) for local control. Grade 3–4 global and gastrointestinal toxicities were, respectively, 9% lower (95%CI 6% to 11%) and 5% lower (95%CI 2% to 8%) in patients receiving 3D BT versus 2D BT. Certainty of evidence was very low for all assessed outcomes.CONCLUSIONSOur study may suggest a benefit of 3D BT over conventional 2D BT on important clinical outcomes.  相似文献   
108.
BackgroundThe association of age with coronary plaque dynamics is not well characterized by coronary computed tomography angiography (CCTA).MethodsFrom a multinational registry of patients who underwent serial CCTA, 1153 subjects (61 ± 5 years old, 61.1% male) were analyzed. Annualized volume changes of total, fibrous, fibrofatty, necrotic core, and dense calcification plaque components of the whole heart were compared by age quartile groups. Clinical events, a composite of all-cause death, acute coronary syndrome, and any revascularization after 30 days of the initial CCTA, were also analyzed. Random forest analysis was used to define the relative importance of age on plaque progression.ResultsWith a 3.3-years’ median interval between the two CCTA, the median annual volume changes of total plaque in each age quartile group was 7.8, 10.5, 10.8, and 12.1 mm3/year and for dense calcification, 2.5, 4.6, 5.4, and 7.1 mm3/year, both of which demonstrated a tendency to increase by age (p-for-trend = 0.001 and < 0.001, respectively). However, this tendency was not observed in any other plaque components. The annual volume changes of total plaque and dense calcification were also significantly different in the propensity score-matched lowest age quartile group versus the other age groups as was the composite clinical event (log-rank p = 0.003). In random forest analysis, age had comparable importance in the total plaque volume progression as other traditional factors.ConclusionsThe rate of whole-heart plaque progression and dense calcification increases depending on age. Age is a significant factor in plaque growth, the importance of which is comparable to other traditional risk factors.Clinical trial registrationURL: http://www.clinicaltrials.gov. Unique identifiers: NCT02803411.  相似文献   
109.

Camouflaging includes strategies used by individuals to mask or hide autistic traits. Research has shown that both autistic and neurotypical individuals engage in camouflaging and that there may be sex differences in the reasons for camouflaging in autistic adults. The purpose of this qualitative study was to extend previous research on the lived experience of camouflaging through exploring camouflaging motivations and consequences in autistic and neurotypical adolescents through both questionnaires (n?=?132) and semi-structured interviews (n?=?19). Results revealed trends in camouflaging motivations and consequences by diagnosis and sex, as well as by sex within the autistic group. These findings further inform our understanding of camouflaging and why it may be reported as particularly detrimental for autistic females.

  相似文献   
110.
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