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   3624462篇
  免费   255988篇
  国内免费   9859篇
耳鼻咽喉   48886篇
儿科学   120033篇
妇产科学   99455篇
基础医学   509049篇
口腔科学   102273篇
临床医学   332102篇
内科学   706269篇
皮肤病学   85570篇
神经病学   293110篇
特种医学   137379篇
外国民族医学   944篇
外科学   540903篇
综合类   78756篇
现状与发展   9篇
一般理论   1393篇
预防医学   277346篇
眼科学   83983篇
药学   264745篇
  16篇
中国医学   8325篇
肿瘤学   199763篇
  2021年   28179篇
  2019年   28898篇
  2018年   41122篇
  2017年   31357篇
  2016年   35655篇
  2015年   40444篇
  2014年   55896篇
  2013年   83401篇
  2012年   112375篇
  2011年   118963篇
  2010年   71255篇
  2009年   67558篇
  2008年   110648篇
  2007年   117769篇
  2006年   119434篇
  2005年   114530篇
  2004年   110088篇
  2003年   105898篇
  2002年   102231篇
  2001年   175862篇
  2000年   179993篇
  1999年   151436篇
  1998年   43109篇
  1997年   37975篇
  1996年   38073篇
  1995年   36918篇
  1994年   33738篇
  1993年   31594篇
  1992年   117162篇
  1991年   112969篇
  1990年   109355篇
  1989年   105621篇
  1988年   96591篇
  1987年   94614篇
  1986年   88827篇
  1985年   84807篇
  1984年   63217篇
  1983年   53642篇
  1982年   31468篇
  1979年   55922篇
  1978年   39253篇
  1977年   33405篇
  1976年   31151篇
  1975年   32956篇
  1974年   39317篇
  1973年   37581篇
  1972年   35094篇
  1971年   32574篇
  1970年   30103篇
  1969年   28769篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
151.
152.
153.
154.

Introduction The focus in clinical pharmacy practice is and has for the last 30–35 years been on changing the role of pharmacy staff into service orientation and patient counselling. One way of doing this is by involving staff in change process and as a researcher to take part in the change process by establishing partnerships with staff. On the background of the authors’ widespread action research (AR)-based experiences, recommendations and comments for how to conduct an AR-study is described, and one of their AR-based studies illustrate the methodology and the research methods used. Methodology AR is defined as an approach to research which is based on a problem-solving relationship between researchers and clients, which aims at both solving a problem and at collaboratively generating new knowledge. Research questions relevant in AR-studies are: what was the working process in this change oriented study? What learning and/or changes took place? What challenges/pitfalls had to be overcome? What were the influence/consequences for the involved parts? When to use If you want to implement new services and want to involve staff and others in the process, an AR methodology is very suitable. The basic advantages of doing AR-based studies are grounded in their participatory and democratic basis and their starting point in problems experienced in practice. Limitations Some of the limitations in AR-studies are that neither of the participants in a project steering group are the only ones to decide. Furthermore, the collective process makes the decision-making procedures relatively complex.

  相似文献   
155.
156.
157.
158.
159.

Objective

To discover the experiences of end-of-life patients attended by the emergency services, through the discourse of the family caregivers who accompanied the family member in this care transit.

Method

A qualitative approach study, based on the paradigm of hermeneutical phenomenology. In total, 81 family caregivers participated. The techniques used were the in-depth interview and the discussion group, with a total of 5 discussion groups and 41 interviews. The period of data collection was carried out between January 2013 and June 2014.

Results

In the network of discourses obtained with respect to “Urgent Care”, all the codes were grouped in relation to a single argumentative line: deficiencies in urgent care. Among them, we found different dimensions that are established depending on the different times of care, or the different determinant aspects of these deficiencies: disorganization of the care received, lack of experience of the professionals in emergencies, application of general protocols in the emergency services, inadequate care in the treatment received, delays in emergency care.

Conclusions

In general, we highlight the dissatisfaction of the family members with respect to the care received from the emergency services. The needs of these types of situation are not covered from these services and are of low quality. Therefore, it is necessary to reorient the care protocols for these patients.  相似文献   
160.
Women with pre-eclampsia have an increased risk of cardiovascular disease later in life. The aim of the study was to establish the presence and pattern of arterial stiffness in women previously with pre-eclampsia from a semi-rural region of South Africa. This was a prospective longitudinal study which involved 36 previously pre-eclamptic women and 86 non-pregnant controls (NPC) who had a past history of non-complicated pregnancy. Maternal wave reflection (augmentation index) and carotid-femoral pulse wave velocity were assessed noninvasively, using applanation tonometry with the SphygmoCor device. Endothelial function was assessed by EndoPAT 2000 device; pneumatic probes were fitted to the index fingers; induced flow-mediated reactive hyperemia; the ratio of the readings before and after occlusion was then used to calculate the score, the reactive hyperemia index (RHI) as a measure of endothelial function.

Pulse wave velocity remained significantly higher in previously pre-eclamptic women than non-pregnant controls up to three months after delivery (p < 0.05), then it reduced to nonsignificant values. All blood pressure indices (central and brachial pressures), were higher in previously pre-eclamptic women as compared to nonpregnant controls up to one year postpartum.

Regional (aortic) arterial stiffness, though it persists for some time after delivery, is transitory in previously pre-eclamptic women from the rural Africa setting. However, their increase blood pressure is an indication of compromised arterial compliance in women previously with pre-eclampsia.  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