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   173篇
  免费   9篇
  国内免费   1篇
妇产科学   12篇
基础医学   29篇
口腔科学   3篇
临床医学   7篇
内科学   42篇
皮肤病学   4篇
神经病学   6篇
特种医学   2篇
外科学   16篇
综合类   3篇
预防医学   44篇
眼科学   3篇
药学   5篇
肿瘤学   7篇
  2023年   1篇
  2022年   2篇
  2021年   1篇
  2019年   5篇
  2018年   8篇
  2017年   4篇
  2016年   11篇
  2015年   8篇
  2014年   8篇
  2013年   7篇
  2012年   14篇
  2011年   24篇
  2010年   8篇
  2009年   5篇
  2008年   14篇
  2007年   8篇
  2006年   11篇
  2005年   10篇
  2004年   5篇
  2003年   4篇
  2002年   7篇
  2001年   4篇
  2000年   1篇
  1998年   2篇
  1997年   1篇
  1992年   2篇
  1991年   1篇
  1989年   2篇
  1988年   1篇
  1987年   1篇
  1985年   1篇
  1983年   1篇
  1975年   1篇
排序方式: 共有183条查询结果,搜索用时 15 毫秒
81.
The advent of highly active antiretroviral therapy has promoted a reduction in mortality due to HIV. Thus more women are living longer after receiving a diagnosis of HIV infection. With an increase in survival, topics related to the menopausal transition in HIV-infected women have emerged, such as age at menopause, bone mineral density and menopause-related symptoms. To this end, several studies have investigated age at menopause (AM) in HIV-infected women. The present paper reviews these studies and discusses the possible clinical implications of determining AM for HIV-positive women.  相似文献   
82.
Objective.?To evaluate quality of life (QOL) and identify its associated factors in a cohort of postmenopausal women who had not received hormone therapy.

Methods.?A cross-sectional study was conducted among 81 postmenopausal women who had not used hormone therapy in the last six months. Sociodemographic and clinical characteristics, in addition to the prevalence of menopausal symptoms, were evaluated. QOL was assessed by the Medical Outcomes Study 36-item Short-Form Health Survey (SF-36) questionnaire, which may be condensed into two summaries: Physical Component Summary and Mental Component Summary. Generalized linear models were used to analyze the data, allowing the identification of factors affecting QOL, adjusting for confounding variables.

Results.?The mean (±standard deviation) age of the participants was 58.1 ± 4.7 years. The most prevalent symptoms were nervousness (67%) and hot flushes and sweating (51%). Factors associated with poorer QOL were sweating, palpitations, nervousness (physical component), and dizziness, nervousness, depression, insomnia and dyspareunia (mental component).

Conclusion.?We observed that menopausal symptoms negatively affected the physical and mental components of QOL in postmenopausal women.  相似文献   
83.
84.
85.
86.
87.
88.
89.
The solubility of propylene, ethylene, and propylene–ethylene mixtures in isotactic polypropylene (iPP) is measured with a high‐pressure sorption balance at different temperatures and pressures. The obtained sorption isotherms of both binary systems (propylene–iPP and ethylene–iPP) are fitted with the Sanchez–Lacombe equation of state. It is found that both binary interaction parameters for ethylene and propylene in iPP decrease with temperature. At temperatures above 70 °C, the overall solubility of ethylene plus propylene mixtures can be modeled using purely binary systems. However, at temperatures under 70 °C it is necessary to use a ternary solubility model that accounts for interactions between the penetrants and the polymer. Furthermore, at lower temperatures, the total solubility of the gas mixture is higher than the sum of gas solubilities of individual components because the anti‐solvent effect of ethylene (on propylene) is weaker than the co‐solvent effect of propylene on ethylene. Moreover, the molar ratio of ethylene to propylene dissolved in iPP increases with temperature and pressure. Desorption studies show that the effective diffusion coefficient increases with pressure and temperature and that the effective diffusivity of gaseous ethylene–propylene mixtures is lower than that of either of the individual gases.  相似文献   
90.
The Coping With Strain (CWS) course is a modified version of the Coping With Depression (CWD) course. CWD has been shown to reduce depression in several target groups. However, no other study has tested a modified CWD course delivered at the workplace to promote mental health. As mental health problems among employees remain a neglected area in many countries, and initiatives at the workplace often lack documentation of effects, we tested the effects of CWS on self-esteem, self-efficacy and vitality. After advertisement at workplaces, 119 employees were randomized into Intervention Group 1 (IG1), which immediately participated in CWS, or Intervention Group 2 (IG2), which functioned as a control group for six months until its participation in CWS. The follow-up period lasted for four years in both IG1 and IG2. Linear mixed models were fitted to the data. Self-efficacy, self-esteem and vitality increased significantly during the course and showed further significantly elevated levels at the follow-ups. CWS delivered at the workplace has short-term effects and the long-term effects may be maintained over a period of four years.  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