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   9819篇
  免费   609篇
  国内免费   81篇
耳鼻咽喉   68篇
儿科学   253篇
妇产科学   262篇
基础医学   1364篇
口腔科学   143篇
临床医学   760篇
内科学   2544篇
皮肤病学   121篇
神经病学   1428篇
特种医学   387篇
外科学   870篇
综合类   17篇
一般理论   3篇
预防医学   444篇
眼科学   129篇
药学   760篇
中国医学   10篇
肿瘤学   946篇
  2024年   19篇
  2023年   157篇
  2022年   242篇
  2021年   493篇
  2020年   266篇
  2019年   378篇
  2018年   414篇
  2017年   308篇
  2016年   369篇
  2015年   382篇
  2014年   546篇
  2013年   625篇
  2012年   820篇
  2011年   856篇
  2010年   491篇
  2009年   445篇
  2008年   628篇
  2007年   573篇
  2006年   563篇
  2005年   491篇
  2004年   355篇
  2003年   301篇
  2002年   270篇
  2001年   45篇
  2000年   40篇
  1999年   54篇
  1998年   46篇
  1997年   36篇
  1996年   36篇
  1995年   24篇
  1994年   24篇
  1993年   15篇
  1992年   16篇
  1991年   24篇
  1990年   20篇
  1989年   24篇
  1988年   25篇
  1987年   14篇
  1986年   14篇
  1985年   7篇
  1984年   7篇
  1983年   7篇
  1982年   3篇
  1981年   8篇
  1980年   4篇
  1979年   8篇
  1978年   4篇
  1977年   2篇
  1967年   2篇
  1966年   3篇
排序方式: 共有10000条查询结果,搜索用时 734 毫秒
101.
Background: A growing recognition of the impact of distress on the quality of life and adherence to treatment of cancer patients has been documented. As a result, national guidelines and standards of care mandate providers to implement distress screening protocols to connect patients with psychosocial services. However, limited literature has examined whether distressed patients are referred to care and their needs addressed. This article assessed differences in rates of referral and psychosocial services by demographic factors, clinical characteristics, and distress severity. Potential predictors of these two outcomes were investigated.

Methods: A retrospective analysis of patient data abstracted from electronic medical records of a NCI-designated Academic Comprehensive Cancer Center was conducted. Of the 399 cases meeting the inclusion criteria, 302 (75.7%) were screened for distress with the Distress Thermometer. Differences were examined with chi-square, t-tests, and ANOVAs. Predictors were identified with multivariate logistic regressions.

Results: Overall, patients who were identified as distressed were referred to a psychosocial provider (71.4%) and psychosocial services were delivered in approximately 64% of the cases. Referrals and service delivery rates varied by age group, clinic, health insurance coverage, distress severity, and presence of psychosocial issues. Only the distress score predicted the likelihood of being referred, and of a provider intervention to occur.

Conclusions and implications for psychosocial providers: Although the protocol appeared to facilitate referral and service delivery to patients scoring above the cutoff for distress, our results suggest that patients were more likely to not have their distress and psychosocial needs addressed if they were older, without insurance coverage, and were seen in clinics where a social worker was not consistently available. Future studies able to monitor patient outcomes in terms of quality of life, satisfaction with care, and service utilization are recommended.  相似文献   

102.
Objectives: The research largely aimed at exploring the impact of marital status, cognitive efficiency, gender, physical health and sociocultural context on self-rated emotional competence, depression, memory and cognitive measures.Method: Ninety-four healthy adults aged 75–99 were recruited in the Sardinian province of Ogliastra, where a collectivistic culture prevails, and in northern Italy, which in turn is characterized by the prevalence of individualistic cultural traits. Participants were administered self-referent metacognitive efficiency, subjective wellness and depression measures.Results: Sardinian elders self-rated lower levels of depression and cognitive failures and had greater levels of emotional competence.Conclusions: Perceived psychological well-being, metacognitive efficiency and depression seem to be affected by sociocultural context.  相似文献   
103.
104.
This article examines research on hypnosis and suggestion, starting with the nineteenth-century model proposed by Enrico Morselli (1852–1929), an illustrious Italian psychiatrist and psychologist. The authors conducted an original psychophysiological analysis of hypnosis, distancing the work from the neuropathological concept of the time and proposing a model based on a naturalistic approach to investigating mental processes. The issues investigated by Morselli, including the definition of hypnosis and analysis of specific mental processes such as attention and memory, are reviewed in light of modern research. From the view of modern neuroscientific concepts, some problems that originated in the nineteenth century still appear to be present and pose still-open questions.  相似文献   
105.
106.
107.
Background: The recovery of foetal remains is very sporadic in archaeology, especially due the scarce degree of bone mineralisation. This paper presents the singular archaeological discovery of a foetal tile preserving the bone remains, object of our anthropological examination.

Materials and methods: The foetal tile was discovered during an archaeological excavation in a medieval site (Northern Italy). The tile was analysed by CT scan and later, human remains were anthropologically examined.

Results: The archaeological investigation revealed a special ritual destined to foetuses while forensic anthropological analysis allowed estimating the gestational age near to 21–24?weeks.  相似文献   
108.
109.
110.
Inflammation persists in patients infected with HIV. Reduction of inflammatory cytokines and microbial translocation might be one way that this could be managed. Purpose: The anti-inflammatory properties of certain probiotic strains prompted us to investigate whether a probiotic could reduce the inflammatory index of HIV-infected patients. Methods: The study involved 30 HIV+ males on antiretroviral therapy, who were given one bottle of fermented milk Yakult Light® containing Lactobacillus casei Shirota (LcS) twice a day for four weeks. Results: The probiotic LcS was associated with an increase of T lymphocytes and a significant increase of CD56+ cells (p = 0.04). There was also a significant decrease of mRNA levels of TGFβ, IL-10 and IL-12 (p < 0.001) and IL-1β expression (p < 0.001) and an increase of serum IL-23 (p = 0.03). In addition, decreased inflammation and cardiovascular risk were observed, as shown by a reduction of cystatin C (p < 0.001). Conclusions: These data provide preliminary evidence that probiotic supplementation may modulate certain immunological parameters and some of the cytokines that were analyzed. Thus, we propose that LcS may be an inexpensive and practical strategy to support the immune function of HIV+ patients.  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