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   18554篇
  免费   5146篇
  国内免费   67篇
耳鼻咽喉   63篇
儿科学   407篇
妇产科学   1596篇
基础医学   135篇
口腔科学   125篇
临床医学   15180篇
内科学   2082篇
皮肤病学   56篇
神经病学   592篇
特种医学   182篇
外科学   997篇
综合类   35篇
预防医学   1652篇
眼科学   18篇
药学   56篇
中国医学   1篇
肿瘤学   590篇
  2024年   74篇
  2023年   766篇
  2022年   83篇
  2021年   222篇
  2020年   601篇
  2019年   194篇
  2018年   1064篇
  2017年   1325篇
  2016年   1392篇
  2015年   1461篇
  2014年   1494篇
  2013年   1725篇
  2012年   411篇
  2011年   664篇
  2010年   1034篇
  2009年   1323篇
  2008年   635篇
  2007年   543篇
  2006年   561篇
  2005年   452篇
  2004年   407篇
  2003年   355篇
  2002年   305篇
  2001年   467篇
  2000年   269篇
  1999年   416篇
  1998年   574篇
  1997年   685篇
  1996年   633篇
  1995年   562篇
  1994年   407篇
  1993年   328篇
  1992年   248篇
  1991年   237篇
  1990年   234篇
  1989年   181篇
  1988年   137篇
  1987年   130篇
  1986年   122篇
  1985年   142篇
  1984年   105篇
  1983年   97篇
  1982年   81篇
  1981年   88篇
  1980年   50篇
  1979年   76篇
  1978年   58篇
  1977年   64篇
  1976年   65篇
  1972年   81篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
72.
AIM: The aim of this study was to investigate the nature and organization of maternal needs and priorities in a neonatal unit. BACKGROUND: The relationship between maternal needs and priorities appears to be an under studied area in neonatal nursing. METHODS: A quantitative survey was carried out based on 209 mothers with premature infants. Two self-assessment schedules were used: critical care maternal needs inventory (J. Leske, Heart and Lung 15, 27-42) and a ranking scale. The data were analysed with multivariate analysis. FINDINGS: Data analysis revealed clear priorities in maternal needs. In particular the need for accurate infant related information was a priority for 93% of the mothers. Good communication practices with professionals were also valued. The mothers displayed altruistic behaviour, and self-related needs took second place. It is proposed that maternal needs demonstrate a hierarchical organization. CONCLUSION: It is important for nurses to consider the individual needs of the mothers, simply because the satisfaction of these needs is essential for maternal well-being.  相似文献   
73.
CONTEXT: Health disparities between rural and urban communities are well documented. There are many suggested causes and many proposed solutions but no one-size-fits-all answer. The most successful community interventions have been introduced by communities themselves. However, before communities invest in such interventions, each group must identify and prioritize their needs. PURPOSE: This article describes the Hoshin facilitation method as a practical option assisting communities in assessing their needs and gaining consensus for future steps. METHODS: Thirty-four meetings were held in 11 rural communities in Hawaii using the Hoshin process to identify factors that impact rural health. Themes were identified by constant comparative analysis and thematic frequency described. Commonality of responses between communities was examined. Informal feedback was collected from meeting participants. FINDINGS: There was a great deal of commonality between community responses, with economic factors, drug use, lack of community leadership, lack of health care services and access to services, lack of healthy activities for youth, and poor public education being the most common issues noted. Group involvement in the meetings was high, and the facilitation method received positive feedback from participants. CONCLUSIONS: The Hoshin facilitation method is a very useful tool to help communities rapidly identify and prioritize areas for programmatic attention.  相似文献   
74.
75.
76.
77.
This study investigated whether previous contact with mental illness affected the attitudes to mental illness (AMI) of general student nurses in Hong Kong — the contact hypothesis. We employed a quasi-experimental design. We compared the attitudes to mental illness of students who had previous contact with mental illness through having taken a psychiatric secondment with those who had not taken a psychiatric secondment. Also, we compared the AMI of: students who had taken other courses related to mental illness with those who had not; those who had a family history of mental illness with those who had not; and those who lived with a mentally ill relative with those who did not. We found that previous contact with mental illness had no significant effect on the attitudes to mental illness of the students. In other words our findings do not support the contact hypothesis. Our sample expressed positive general attitudes to mental illness when presented with general issues about mental illness. However, their attitudes were less positive when presented with specific issues about mental illness that might impinge upon their daily lives. We discuss the implications of these findings for mental health nursing practice, education and research.  相似文献   
78.
The process of leaving an abusive relationship involves repeated attempts at leaving and returning and is influenced by a number of individual characteristics and contextual factors. Leaving is an initial step in recovering from an abusive relationship, a process that also includes struggling for survival, grieving, and searching for the meaning of the experience. Nurses must recognize that recovering from an abusive relationship can be a lifelong process, and health care providers have unique opportunities to support a woman's recovery.  相似文献   
79.
80.
Background: For local anesthetics, the process of removal from the site of administration influences the duration of anesthesia and the risk for systemic toxicity to develop. The systemic absorption of epidural ropivacaine and the time profile of sensory and motor block were studied in healthy volunteers.

Methods: Nine persons simultaneously received 150 mg ropivacaine hydrochloride (7.5 mg/ml) epidurally and 40 mg deuterium-labeled (sup 2 H sub 3)ropivacaine hydrochloride (0.25 mg/ml) intravenously. Peripheral arterial and venous plasma samples were collected, and assessments of sensory and motor block were made.

Results: The arterial plasma concentrations increased faster than the venous concentrations, with 50% higher maximum concentrations after both intravenous and epidural administration. The absorption was biphasic. A correlation was seen between the duration of sensory block and the slower absorption half-life; that is, the longer the half-life, the longer the duration. The extent of spread varied among the volunteers, with the median upper block level not exceeding T12. The motor block (Bromage score 1) was of slower onset (median, 0.4 h) and of shorter duration (median, 4.1 h) than the sensory block (onset, 0.2 h; duration, 6.5 h at L2 medians).  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