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   946019篇
  免费   65807篇
  国内免费   2354篇
耳鼻咽喉   11855篇
儿科学   29441篇
妇产科学   22070篇
基础医学   141759篇
口腔科学   24381篇
临床医学   87917篇
内科学   184907篇
皮肤病学   19361篇
神经病学   72627篇
特种医学   33806篇
外国民族医学   87篇
外科学   140968篇
综合类   18151篇
现状与发展   2篇
一般理论   471篇
预防医学   72072篇
眼科学   22615篇
药学   70287篇
  9篇
中国医学   2698篇
肿瘤学   58696篇
  2021年   10509篇
  2019年   10412篇
  2018年   13458篇
  2017年   10299篇
  2016年   11495篇
  2015年   13027篇
  2014年   18413篇
  2013年   26618篇
  2012年   37491篇
  2011年   39352篇
  2010年   22754篇
  2009年   20907篇
  2008年   35721篇
  2007年   38100篇
  2006年   38397篇
  2005年   36943篇
  2004年   35424篇
  2003年   33302篇
  2002年   31858篇
  2001年   38370篇
  2000年   38488篇
  1999年   32657篇
  1998年   10799篇
  1997年   9112篇
  1996年   9064篇
  1995年   8621篇
  1994年   7775篇
  1993年   7111篇
  1992年   24216篇
  1991年   24048篇
  1990年   23295篇
  1989年   23042篇
  1988年   20978篇
  1987年   20355篇
  1986年   19401篇
  1985年   18244篇
  1984年   13874篇
  1983年   11840篇
  1982年   7241篇
  1981年   6547篇
  1979年   12212篇
  1978年   8875篇
  1977年   7455篇
  1976年   7183篇
  1975年   7729篇
  1974年   8960篇
  1973年   8528篇
  1972年   8008篇
  1971年   7396篇
  1970年   7130篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
Relationship-centered care reflects both knowing and feeling: the knowledge that physician and patient bring from their respective domains of expertise, and the physician’s and patient’s experience, expression, and perception of emotions during the medical encounter. These processes are conveyed and reciprocated in the care process through verbal and nonverbal communication. We suggest that the emotional context of care is especially related to nonverbal communication and that emotion-related communication skills, including sending and receiving nonverbal messages and emotional self-awareness, are critical elements of high-quality care. Although nonverbal behavior has received far less study than other care processes, the current review argues that it holds significance for the therapeutic relationship and influences important outcomes including satisfaction, adherence, and clinical outcomes of care.  相似文献   
52.
53.
54.
BACKGROUND: Arterial hypertension and postmenopausal reduction of estrogen levels may be involved in modifications of the stiffness of large arteries. OBJECTIVES: To evaluate the pulse-wave velocity (PWV) and indirectly the arterial stiffness in hypertensive postmenopausal women submitted to hormone therapy with estradiol alone or combined with norethisterone acetate. SUBJECTS: Forty-five hypertensive postmenopausal women were double-blindly, randomly assigned to three arms of treatment: placebo (group I); estradiol 2 mg/day (group II); or estradiol 2 mg/day and norethisterone acetate 1 mg/day (group III). METHODS: Arterial stiffness was assessed from PWV measurements of the common carotid and femoral arteries (CF-PWV) and the common carotid and radial arteries (CR-PWV) obtained using the automatic Complior(R) device, taken at baseline and after 12 weeks of treatment. RESULTS: After the 12-week treatment, values of CF-PWV and CR-PWV were not significantly different (p = 0.910 and p = 0.736, respectively) among the groups. Systolic blood pressure showed a positive correlation with CF-PWV in groups II and III (p = 0.02 and p < 0.001, respectively). CONCLUSIONS: PWV and arterial stiffness in postmenopausal hypertensive women did not reduce over a 12-week treatment with estradiol alone compared with the same period of treatment with estradiol combined with norethisterone acetate.  相似文献   
55.
56.
A true comparison of long-term medical and surgical treatment in gastro-oesophageal reflux disease (GORD) is impossible as few studies have been carried out with adequate randomisation of the patients and long-term evaluation of quality of life. In general the control of the reflux symptoms is roughly equal with medical and surgical treatment. However, surgery can cause other symptoms such as dysphagia or non-specific epigastric discomfort or pain in some patients, which reduces the overall efficacy in controlling the symptoms. Based on a cost utility analysis, Heudebert et al. came to the conclusion that medical treatment was their preferred strategy for most patients with severe erosive oesophagitis.  相似文献   
57.
58.
59.
60.
Acute renal failure (ARF) developed in a 7-week-old infant due to bilateral candidal bezoars (fungal balls) causing obstruction at the pelviureteric junction. The baby was born at term with an appropriate birthweight, and had been treated with broad-spectrum antibiotics for respiratory distress and septicemia during the 1st week of life. Recovery from ARF followed renal decompression with bilateral nephrostomy tube placement and parenteral administration of amphotericin B and 5-flucytosine. Received August 21, 1996; received in revised form and accepted January 3, 1997  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