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   2346554篇
  免费   171871篇
  国内免费   5793篇
耳鼻咽喉   32183篇
儿科学   77669篇
妇产科学   66892篇
基础医学   343787篇
口腔科学   65487篇
临床医学   215942篇
内科学   452221篇
皮肤病学   48051篇
神经病学   189684篇
特种医学   87864篇
外国民族医学   696篇
外科学   342429篇
综合类   51121篇
现状与发展   2篇
一般理论   730篇
预防医学   188706篇
眼科学   53354篇
药学   176032篇
  7篇
中国医学   5045篇
肿瘤学   126316篇
  2018年   25223篇
  2017年   18995篇
  2016年   21009篇
  2015年   24049篇
  2014年   33218篇
  2013年   51274篇
  2012年   70316篇
  2011年   75029篇
  2010年   43984篇
  2009年   40868篇
  2008年   70343篇
  2007年   75089篇
  2006年   75878篇
  2005年   73846篇
  2004年   70681篇
  2003年   67793篇
  2002年   66245篇
  2001年   103855篇
  2000年   106554篇
  1999年   90113篇
  1998年   26000篇
  1997年   23444篇
  1996年   23383篇
  1995年   22124篇
  1994年   20853篇
  1993年   19460篇
  1992年   72463篇
  1991年   71396篇
  1990年   69741篇
  1989年   67094篇
  1988年   62329篇
  1987年   60875篇
  1986年   58197篇
  1985年   55660篇
  1984年   41816篇
  1983年   35955篇
  1982年   21701篇
  1981年   19250篇
  1979年   39048篇
  1978年   27676篇
  1977年   23341篇
  1976年   22484篇
  1975年   23871篇
  1974年   28576篇
  1973年   27869篇
  1972年   26168篇
  1971年   24276篇
  1970年   22624篇
  1969年   21292篇
  1968年   20112篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
Abstract

Objective: To understand the origin of extremely high gonadotropin levels in a perimenopausal woman.

Methods: A 52-year-old woman with a 2?months of amenorrhea followed spontaneous menstrual cycles recovery was referred to our outpatient clinic with elevated follicle-stimulating hormone (FSH, 483 mUI/ml), luteinizing hormone (LH, 475 mUI/ml) and prolactin (PRL, 173?ng/ml). She was known to take levosulpiride. The gonadotropin levels did not fit with the clinical features.

Results: A gonadotroph tumor was ruled out. Further analysis confirmed constantly high FSH, LH and PRL levels. The measurements were repeated using different analytical platforms with different results. After serial dilutions, nonlinearity was present suggesting an immunoassay interference. After post-polyethylene glycol recovery, hormone levels appeared in the normal range. Anti-goat antibodies were recognized in the serum of the patient.

Conclusions: This case report shows a case of falsely abnormal high gonadotropin and PRL levels in a woman during menopause transition. In the clinical practice the evaluation of gonadotropin profile is not recommended at this age, but the abnormal levels stimulated further evaluation. An interference in the assay due to anti-goat antibodies resulted in abnormally high level of FSH and LH. A strict collaboration between clinicians and the laboratory is needed, when laboratory findings do not correspond to clinical findings.  相似文献   
6.
7.
8.
9.
10.
Abstract

Objectives: This study examined word use as an indicator of interpersonal positive reframing in daily conversations of couples coping with breast cancer and as a predictor of stress.

Design: The Electronically Activated Recorder (EAR) and Linguistic Inquiry and Word Count (LIWC) were used to examine naturally occurring word use conceptually linked to positive reframing (positive emotion, negative emotion, and cognitive processing words).

Sample: Fifty-two couples coping with breast cancer.

Methods: Couples wore the EAR, a device participants wear, that audio-recorded over one weekend (>16,000 sound files), and completed self-reports of positive reframing (COPE) and stress (Perceived Stress Scale). LIWC, a software program, measured word use.

Findings: Both partners’ word use (i.e., positive emotion and cognitive processing words) was associated with their own reported positive reframing, and spouses’ word use was also indicative of patients’ positive reframing. Results also revealed that, in general, words indicating positive reframing predicted lower levels of stress.

Conclusions: Findings supported the hypothesis that partners—and particularly spouses of breast cancer patients—may assist each other’s coping by positively reframing the cancer experience and other negative experiences in conversation.  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