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   77965篇
  免费   5114篇
  国内免费   1915篇
耳鼻咽喉   451篇
儿科学   1256篇
妇产科学   844篇
基础医学   5304篇
口腔科学   1238篇
临床医学   8421篇
内科学   7531篇
皮肤病学   678篇
神经病学   3823篇
特种医学   1507篇
外国民族医学   8篇
外科学   6651篇
综合类   14917篇
现状与发展   4篇
一般理论   7篇
预防医学   13713篇
眼科学   1296篇
药学   6425篇
  156篇
中国医学   8534篇
肿瘤学   2230篇
  2024年   167篇
  2023年   1229篇
  2022年   1888篇
  2021年   3144篇
  2020年   3141篇
  2019年   2941篇
  2018年   2559篇
  2017年   2499篇
  2016年   2396篇
  2015年   2216篇
  2014年   5489篇
  2013年   5068篇
  2012年   5060篇
  2011年   5718篇
  2010年   5057篇
  2009年   3870篇
  2008年   3723篇
  2007年   3749篇
  2006年   3446篇
  2005年   2810篇
  2004年   2347篇
  2003年   2193篇
  2002年   1464篇
  2001年   1351篇
  2000年   1058篇
  1999年   915篇
  1998年   746篇
  1997年   683篇
  1996年   566篇
  1995年   567篇
  1994年   529篇
  1993年   414篇
  1992年   396篇
  1991年   386篇
  1990年   305篇
  1989年   289篇
  1988年   291篇
  1987年   244篇
  1986年   223篇
  1985年   467篇
  1984年   451篇
  1983年   352篇
  1982年   385篇
  1981年   375篇
  1980年   359篇
  1979年   323篇
  1978年   279篇
  1977年   255篇
  1976年   191篇
  1975年   114篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
熊磊教授以理脾为本,将治痰贯穿始终。根据小儿脾常不足、肾常虚、肝常有余的生理特点,癫痫发作期治疗主以涤痰开窍,辅以理气健脾,同时配合活血化瘀通窍与平肝息风潜阳。主要选方为柴芍温胆汤、天麻钩藤饮、桃红四物汤加减;缓解期则以补肾养肝为主,兼以健脾化痰,主要选方为杞菊地黄丸合定痫丸加减,取得较好临床疗效。  相似文献   
2.
社会力量具备相应的经济基础和技术条件,对于公立互联网医院体系建设具有积极的促进作用。但是实践中仍然存在商业模式不完善、监管制度不健全等问题。基于经济学契约理论要义,提出在坚持激励与约束机制并举、平衡公私益关系的前提下,通过完善医保政策、构建互联网医疗服务价格分类管理机制来促进社会力量向医疗服务公益性目标回归,并通过构建完善的监督体制来约束部分社会力量的盲目逐利性行为。  相似文献   
3.
4.
5.
6.
7.
8.
ObjectiveTo investigate the presence of symptoms of moral injury in obstetric and neonatal nurses.DesignA secondary qualitative analysis using an analytic expansion of three primary studies.SettingPostal mail and electronic surveys.ParticipantsI used three primary studies: participants in the first consisted of 78 labor and delivery nurses, participants in the second consisted of 75 nurse-midwives, and participants in the third consisted of 22 NICU nurses.MethodsI used Krippendorff’s content analysis method for qualitative data to reanalyze the three primary data sets. The categories I used in this analysis were the 10 symptoms of moral injury that are assessed by the Moral Injury Symptoms Scale–Health Professionals Version.ResultsWhen combining the three types of obstetric and neonatal participants, the top three most frequently cited symptoms of moral injury were moral concern, guilt, and self-condemnation. For participants in labor and delivery units and NICUs, moral concern was the most often described symptom, whereas for participants in midwifery it was guilt. None of the participants reported loss of meaning in their lives, loss of faith, or religious struggle. Participants who worked in NICUs did not describe any symptoms of shame or difficulty forgiving.ConclusionIn addition to the primary symptoms of moral injury, reported secondary consequences of moral injury can include depression, anxiety, anger, self-harm, and social problems. Interventions such as acceptance and commitment therapy are needed to help nurses address the potential for moral injury and repair its effects. Since the COVID-19 pandemic, now more than ever, moral injury needs to be recognized in obstetric and neonatal nurses and not just in the military population.  相似文献   
9.
PurposeTo review and to compare indirectly the outcomes of minimally invasive therapies for the treatment of lower urinary tract symptoms secondary to benign prostatic hyperplasia.Materials and MethodsA literature search via Medline and Cochrane Central databases was completed for randomized control studies published between January 2000 to April 2020 for the following therapies: Rezum, Urolift, Aquablation, and prostatic artery embolization (PAE). Data on the following variables were included: International prostate symptom score (IPSS), maximum urinary flow rate, quality of life, and postvoid residual (PVR). Standard mean differences between treatments were compared through a meta-analysis using transurethral resection of the prostate (TURP) to assess differences in treatment effect.ResultsThere was no significant difference in outcomes between therapies for IPSS at the 3, 6, and 12-month follow ups. Although outcomes for Rezum were only available out to 3 months, there were no consistently significant differences in outcomes when comparing Aquablation versus PAE versus Rezum. TURP PVR was significantly better than Urolift at 3, 6, and 12 months. No significant differences in minor or major adverse events were noted.ConclusionAlthough significant differences in outcomes were limited, Aquablation and PAE were the most durable at 12 months. PAE has been well studied on multiple randomized control trials with minimal adverse events while Aquablation has limited high quality data and has been associated with bleeding-related complications.  相似文献   
10.
Comprehensive evidence regarding the treatment of non-anaemic iron deficiency in patients undergoing valvular heart surgery is lacking. This study aimed to investigate the association between non-anaemic iron deficiency and postoperative outcomes in these patients. We retrospectively analysed 321 patients of which 180 (56%) had iron deficiency (defined as serum ferritin < 100 ng.ml-1 or < 300 ng.ml-1 with transferrin saturation < 20%). While the iron-deficient group had lower pre-operative haemoglobin levels than the non-iron deficient group (median (IQR [range]) 134 (127–141 [120–172]) g.l-1, 143 (133–150 [120–179]) g.l-1, p = 0.001), there was no between-group difference in allogeneic red blood cell transfusion. Median (IQR [range]) days alive and out of hospital at postoperative day 90 was 1 day shorter in the iron-deficient group (80 (77–82 [9–85]) days vs. 81 (79–83 [0–85]) days, p = 0.026). In multivariable analysis, only cardiopulmonary bypass duration (p = 0.032) and intra-operative allogeneic red blood cell transfusion (p = 0.011) were significantly associated with reduced days alive and out of hospital at postoperative day 90. Iron deficiency did not exert any adverse influence on secondary outcomes except length of hospital stay. Our findings indicate that non-anaemic iron deficiency alone is not associated with adverse effects in patients undergoing valvular heart surgery when it does not translate into an increased risk of allogeneic transfusion.  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