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   21518篇
  免费   1673篇
  国内免费   76篇
耳鼻咽喉   199篇
儿科学   691篇
妇产科学   595篇
基础医学   3207篇
口腔科学   311篇
临床医学   2439篇
内科学   4299篇
皮肤病学   608篇
神经病学   2088篇
特种医学   670篇
外国民族医学   26篇
外科学   2154篇
综合类   187篇
一般理论   21篇
预防医学   2317篇
眼科学   383篇
药学   1301篇
中国医学   37篇
肿瘤学   1734篇
  2024年   42篇
  2023年   284篇
  2022年   523篇
  2021年   1000篇
  2020年   608篇
  2019年   812篇
  2018年   889篇
  2017年   668篇
  2016年   750篇
  2015年   761篇
  2014年   951篇
  2013年   1227篇
  2012年   1769篇
  2011年   1794篇
  2010年   929篇
  2009年   813篇
  2008年   1256篇
  2007年   1269篇
  2006年   1088篇
  2005年   1056篇
  2004年   981篇
  2003年   866篇
  2002年   748篇
  2001年   176篇
  2000年   155篇
  1999年   166篇
  1998年   151篇
  1997年   127篇
  1996年   93篇
  1995年   99篇
  1994年   80篇
  1993年   69篇
  1992年   96篇
  1991年   91篇
  1990年   79篇
  1989年   72篇
  1988年   44篇
  1987年   68篇
  1986年   64篇
  1985年   54篇
  1984年   49篇
  1983年   41篇
  1982年   28篇
  1981年   39篇
  1980年   27篇
  1979年   25篇
  1978年   30篇
  1974年   28篇
  1973年   23篇
  1971年   22篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
91.
Ophidiomycosis represents a conservation threat to wild snake populations. The disease was reported in North America early in the 21st century, but the history of ophidiomycosis has not been investigated. We examined museum specimens and confirmed cases of ophidiomycosis >50 years before the disease’s reported emergence.  相似文献   
92.
93.
Burton  Wendy  Sahota  Pinki  Twiddy  Maureen  Brown  Julia  Bryant  Maria 《Prevention science》2021,22(3):345-356
Prevention Science - Poor participant engagement threatens the potential impact and cost-effectiveness of public health programmes preventing meaningful evaluation and wider application. Although...  相似文献   
94.

One barrier to optimal pain management in the neonatal intensive care unit (NICU) is how the healthcare community perceives, and therefore manages, neonatal pain. In this paper, we emphasise that healthcare professionals not only have a professional obligation to care for neonates in the NICU, but that these patients are intrinsically worthy of care. We discuss the conditions that make neonates worthy recipients of pain management by highlighting how neonates are (1) vulnerable to pain and harm, and (2) completely dependent on others for pain management. We argue for a relational account of ethical decision-making in the NICU by demonstrating how an increase in vulnerability and dependence may be experienced by the healthcare community and the neonate’s family. Finally, an ethical framework for decisions around neonatal pain management is proposed, focussing on surrogate decision-making and the importance of compassionate action through both a reflective and an affective empathy. As empathy can be highly motivating against pain, we propose that, in addition to educational programs that raise awareness and knowledge of neonatal pain and pain management, healthcare professionals must cultivate empathy in a collective manner, where all members of the NICU team, including parents, are compassionate decision-makers.

  相似文献   
95.
Bundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz - Versicherte haben seit 2019 einen gesetzlichen Anspruch auf Verordnung von digitalen Gesundheitsanwendungen (DiGA). Die...  相似文献   
96.
BackgroundThis study examined whether adverse childhood experiences (ACEs) are associated with increased risk of having an unwanted or mistimed pregnancy.MethodsWomen in two medical centers within an integrated health system were screened for ACEs during standard prenatal care (N = 745). Multinomial multivariable logistic regression analyses examined the associations of ACEs (count and type) with pregnancy intentions, adjusting for covariates.ResultsOverall, 58.3% of pregnant women reported no ACEs, 19.1% reported one ACE, and 22.7% reported two or more ACEs; 76.2% reported wanting to get pregnant, 18.5% reported wanting to get pregnant but not at this time (i.e., mistimed pregnancy), and 5.2% reported not wanting to get pregnant at all (i.e., unwanted pregnancy). Having two or more (vs. 0) ACEs was associated with higher odds of an unwanted pregnancy (odds ratio, 2.60; 95% confidence interval, 1.19–5.68). Further, childhood loss of parent (odds ratio, 2.20; 95% confidence interval, 1.03–4.71) and neglect (odds ratio, 5.67; 95% confidence interval, 1.72–18.72) were each associated with higher odds of an unwanted pregnancy in separate analyses. ACEs count and type were not significantly associated with having a mistimed pregnancy.ConclusionsAmong women screened for ACEs during standard prenatal care, ACEs were associated with increased odds of having an unwanted pregnancy, but not a mistimed pregnancy. Additional research is needed to better understand the mechanisms through which ACEs and other individual, social, and contextual factors impact pregnancy intentions to better support women and provide appropriate resources to help prevent unintended pregnancies.  相似文献   
97.
Journal of Immigrant and Minority Health - Immigration concerns can deter immigrants from utilizing healthcare services. We examined Latinx immigrants’ immigration concerns related to...  相似文献   
98.
Lasers in Medical Science - Knee osteoarthritis (KOA) is a common degenerative disease in which several treatments and treatment associations have been investigated. This review analyzed the...  相似文献   
99.
100.
Alcohol abuse after liver transplantation can seriously impact graft and patient survival. However, to date, there is no defined standard procedure to identify patients consuming alcohol after liver transplantation. The aim of this study was to analyze the diagnostic value and clinical impact of routinely measured urinary ethyl glucuronide (uEtG) – a metabolite of ethanol – in patients after liver transplantation. Data of 362 consecutive patients after liver transplantation who visited the University Hospital of Tuebingen for outpatient follow-up were analyzed. Forty-eight patients (13%) displayed positive uEtG results. The uEtG positive group contained significantly more patients with pretransplant alcoholic liver disease. However, two thirds of the uEtG positive patients had no history of pretransplant alcoholic liver disease. Several clinical parameters were significantly associated with positive uEtG. In order to enable a more cost-effective application of uEtG in the future, a clinical risk score was developed (specificity 0.95). In conclusion, routine testing for uEtG reveals a considerable percentage of patients practicing alcohol intake after liver transplantation. Application of our proposed risk score could help focusing uEtG testing on patients at risk.  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