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   3180篇
  免费   128篇
  国内免费   44篇
耳鼻咽喉   26篇
儿科学   124篇
妇产科学   117篇
基础医学   375篇
口腔科学   31篇
临床医学   243篇
内科学   287篇
皮肤病学   40篇
神经病学   471篇
特种医学   50篇
外科学   172篇
综合类   470篇
预防医学   415篇
眼科学   25篇
药学   363篇
中国医学   87篇
肿瘤学   56篇
  2023年   31篇
  2022年   57篇
  2021年   85篇
  2020年   88篇
  2019年   95篇
  2018年   74篇
  2017年   102篇
  2016年   113篇
  2015年   107篇
  2014年   222篇
  2013年   235篇
  2012年   183篇
  2011年   223篇
  2010年   182篇
  2009年   158篇
  2008年   156篇
  2007年   142篇
  2006年   165篇
  2005年   108篇
  2004年   98篇
  2003年   86篇
  2002年   44篇
  2001年   52篇
  2000年   53篇
  1999年   40篇
  1998年   31篇
  1997年   33篇
  1996年   30篇
  1995年   34篇
  1994年   19篇
  1993年   16篇
  1992年   29篇
  1991年   23篇
  1990年   15篇
  1989年   11篇
  1988年   17篇
  1986年   18篇
  1985年   23篇
  1984年   19篇
  1983年   8篇
  1982年   17篇
  1981年   16篇
  1980年   9篇
  1979年   11篇
  1978年   7篇
  1977年   12篇
  1976年   9篇
  1975年   9篇
  1974年   10篇
  1973年   7篇
排序方式: 共有3352条查询结果,搜索用时 15 毫秒
1.
2.
3.
Background and objectivesPatients with cancer experience many side effects due to its nature and usual treatments. Sleep disorders and anorexia are the most commonly reported symptoms in cancer patients undergoing chemotherapy. The present study aimed to investigate the effect of Benson's Relaxation Response (BRR) on sleep quality and anorexia in cancer patients undergoing chemotherapy.Methodology and participantsIn the present clinical trial, a total of 84 patients were enrolled and randomly divided into two groups of experimental and control. Benson's relaxation response was administered to the experimental group twice a day over 5 consecutive days. Data was collected using St. Mary's Hospital Sleep Questionnaire (SMHSQ) and anorexia questionnaire with Visual Analog Scale (VAS).ResultsThe results of our study showed a significant improvement in the sleep quality in the experimental group at 24 (p = 0.02) and 48 (p = 0.001) hours after the intervention compared to the control group. Benson's relaxation response (BRR) also had a significant effect on the anorexia in the experimental group at 24 (7.5 ± 1.6) and 48 (6.9 ± 2.1) hours after the intervention compared to the control group. No side effects were reported during the study and follow-up period.ConclusionBenson's relaxation response as a complementary method may improve sleep quality and anorexia in cancer patients undergoing chemotherapy. Further studies with greater sample size and longer follow-up period are needed to confirm the current findings.  相似文献   
4.
5.
Objective: The study explored the semantic content and origins of negative self-beliefs, and their functional links to “not eating enough” and other behaviors, in participants with anorexia nervosa (AN). Method: Fifteen women meeting DSM-IV criteria for AN were compared with 17 dieting and 18 non-dieting women matched on age and number of years of education. The main outcome measure was a semi-structured interview. Results: Six themes were identified in the beliefs of participants with AN. These were, in order of decreasing frequency, powerlessness (present in all but three AN participants), failure, defectiveness, unattractiveness, worthlessness and emptiness. Importantly, powerlessness and failure beliefs were consistently present independent of Beck Depression Inventory-II scores. The negative early life experiences associated with these beliefs had high distress and responsibility ratings. Participants with AN reported that they employed specific behaviors, particularly ‘not eating enough,’ and ‘placating others,’ to try to reduce the cognitive and emotional impact of their negative self-beliefs. Discussion: The findings are discussed in relation to the role of powerlessness and the function of “not eating enough” in cognitive theory and therapy for AN.
  相似文献   
6.
人工流产(简称人流)是各种避孕失败的主要补救措施,目前早孕妇女人流的主要方式有吸刮术与药物流产两种。本文通过对天津市黄河医院意外早孕妇女选择人流方式意向的临床调查研究,探讨现阶段该两种人流方式的可接受性,结果:1000例早孕妇女中选择药物流产(简称药流)者666例(66.6%),吸刮术者334例(33.4%)。本组选择人流方式的理由,其中519例(51.9%)认为药流痛苦少,占第一位,认为手术干脆而选择吸刮术的217例(21.7%),占第二位,其它依次为吸刮术费用低、药流不必手术、吸刮术流产完全、药流不需请假、吸刮术出血时间短、药流安全、吸刮术副作用少、药流保密。药流是近年来使用的流产新方法,本组研究资料及意向选择只反映现阶段早孕妇女的接受状况。  相似文献   
7.
OBJECTIVES: To assess the effect of a medically induced abortion (MA) on birth weight in the first subsequent pregnancy. METHODS: Pregnant women who had had a MA, a surgical abortion (SA), or primigravidas with no history of abortion (NA), were recruited for a prospective cohort study between July 1998 and February 2001. The sample for the present analysis included 12995 singleton live births at term. RESULTS: The overall incidence rate of low birth weight (LBW) was 1.0%. The rates of LBW in the MA, SA, and NA groups were 1.0%, 0.9%, and 1.2, respectively. There were no significant differences in LBW rates between the MA and SA groups, neither between the MA and NA. Logistic regression analysis was used to estimate the effects of MA on birth weight, and we found no relationship between risk of LBW and MA. CONCLUSIONS: We did not find a statistically significant relationship between a history of one medically induced abortion and LBW for the first subsequent term pregnancy.  相似文献   
8.
79例人流术后支原体感染分析   总被引:6,自引:0,他引:6  
陆海音  杨红英 《云南医药》1995,16(3):187-188
79例人流术后支原体感染分析陆海音,杨红英,周曾娣,张明秋,汤国民Analysisofkycoplasmasinfectionsin79womenwithinduceiabortionLuHai-yin,yangHong-yin,ZhouZeng-d...  相似文献   
9.
<正>This is a review of current situation of induced abortion and post abortion family planning service in China. Induced abortion is an important issue in reproductive health. This article reviewed the distribution of induced abortion in various time, areas, and population in China, and explored the character, reason, and harm to reproductive health of induced abortion. Furthermore, this article introduces the concept of Quality of Care Program in Family Planning, and discusses how important and necessary it is to introduce Quality of Care Program in Family Planning to China.  相似文献   
10.
569名未婚女性人工流产原因分析   总被引:4,自引:0,他引:4  
目的:了解未婚人流女性特征,分析其人流原因。方法:采用分层整群多阶段抽样方法,以统一匿名调查表,由统一培训的专业医生对2004年10月~2005年5月在16个抽样单位行人流术的全部未婚女性进行调查。结果:569名调查对象平均年龄20.5岁,伴侣平均年龄23.8岁,月均性生活次数7.4次,33%的被调查者有既往怀孕史。本次人流原因主要为未避孕(71.7%),其原因主要是侥幸心理、不懂避孕和怕麻烦。避孕套是被调查者中知晓率和使用率最高的避孕方法。以百分制计算,被调查者避孕方法和知识的得分分别为60.4分和64.8分,其避孕知识主要来自媒体。结论:未婚女性性活跃、意外妊娠风险认识低、性和生殖健康知识贫乏,应加强未婚人群的性观念和性行为道德教育,根据其年龄和心理特征,提供相关的生殖健康知识和服务,并加强对媒体相关宣传的规范管理。  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