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   18841篇
  免费   4963篇
  国内免费   67篇
耳鼻咽喉   62篇
儿科学   398篇
妇产科学   1601篇
基础医学   138篇
口腔科学   131篇
临床医学   15194篇
内科学   2110篇
皮肤病学   66篇
神经病学   595篇
特种医学   181篇
外科学   1007篇
综合类   37篇
一般理论   1篇
预防医学   1660篇
眼科学   18篇
药学   67篇
中国医学   1篇
肿瘤学   604篇
  2024年   55篇
  2023年   766篇
  2022年   83篇
  2021年   228篇
  2020年   601篇
  2019年   195篇
  2018年   1064篇
  2017年   1328篇
  2016年   1393篇
  2015年   1462篇
  2014年   1501篇
  2013年   1732篇
  2012年   412篇
  2011年   666篇
  2010年   1043篇
  2009年   1329篇
  2008年   637篇
  2007年   545篇
  2006年   555篇
  2005年   451篇
  2004年   408篇
  2003年   358篇
  2002年   304篇
  2001年   469篇
  2000年   270篇
  1999年   416篇
  1998年   573篇
  1997年   690篇
  1996年   636篇
  1995年   567篇
  1994年   409篇
  1993年   336篇
  1992年   252篇
  1991年   242篇
  1990年   237篇
  1989年   182篇
  1988年   139篇
  1987年   131篇
  1986年   123篇
  1985年   144篇
  1984年   104篇
  1983年   100篇
  1982年   82篇
  1981年   92篇
  1980年   52篇
  1979年   76篇
  1978年   60篇
  1977年   65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 109 毫秒
61.
Society often expects mothers and fathers to share equally in the perinatal grief process because the child was a common bond between them. Unfortunately, in perinatal grief, this is not always the case. The mother and the father can experience incongruent grieving and use discordant coping mechanisms. It is important to evaluate these differences to facilitate communication between the distraught parents. Improved communication can in turn facilitate the grieving process.  相似文献   
62.
Kathleen Rich MS  RN  CCNS 《Journal of Vascular Nursing》2002,20(4):125-35; quiz 136-7
Transcutaneous oxygen (TcPO(2)) measurements provide a noninvasive, objective determination of the oxygen level at the skin surface. This offers a means of estimating the underlying circulation and tissue oxygenation. The purpose of the pilot study was to measure the TcPO(2) value of the lower extremity of healthy men and women and of patients with peripheral arterial disease (PAD) in 4 different body and leg positions 24 hours after peripheral vascular surgery reconstruction. The specific aim was to determine if lower-extremity TcPO(2) measurements were affected by changes in extremity position in these subject populations. A convenience sample of 4 healthy health care professionals and 4 patients who had peripheral vascular reconstruction surgery 24 hours before the measurements were studied. Subjects were studied in 4 different leg and body positions: supine with legs extended, sitting with legs dependent, a 5 degrees head-up reverse Trendelenburg, and supine with legs elevated 10 in. The Radiometer TCM30 TcPO(2) monitor was used to carry out these measures. Findings revealed a statistically significant difference in TcPO(2) measurements between the 2 groups, with the healthy subjects having a significantly higher TcPO(2) measurement in all extremity positions compared with the revascularized subjects with PAD (P =.02-.05). Significant changes were noted in both the foot temperature (P =.03) and TcPO(2) measurements with extremity positions within the healthy subject group (P =.001). The foot and leg TcPO(2) measurements affect from leg and body position did not reach significance (P =.09) in the subjects with PAD. No change in foot temperature with extremity positioning (P =.42) was noted in the subjects with PAD. This pilot study provides a base in which additional research will be performed with TcPO(2) measurements in both the healthy and revascularized person.  相似文献   
63.
64.
TOPIC: The power relations between involuntarily hospitalized adolescents and their caregivers from the viewpoint of theory development in nursing and the concept of medicalization. PURPOSE: To contribute to the development of nursing theories that can guide nursing care of involuntarily hospitalized adolescents by examining the power relations between the adolescents and their caregivers. SOURCES: Published literature in medical sociology, and nursing and psychiatric ethics. Nursing and psychiatric literature, in which Michel Foucault's theories are used to explicate the disciplinary power of psychiatry. CONCLUSIONS: To empower involuntarily hospitalized adolescents nurses must both recognize the inevitable power imbalance and seek guidance from the egalitarian ideals of nursing. Nurses can draw from postmodern thinkers who dismiss the idea that one theory can explain human relationships.  相似文献   
65.
66.
67.
68.
Seventy-four 8th- and 10th-grade students attending a private girls' school in Hawaii were queried about their perceptions of and preparation for menstruation using a questionnaire administered in a health education class. Eighty percent had already started menstruating. The most frequently cited perceptions by the respondents referred to both the inconveniences and the normalcy of menstruation. Many were first informed about menstruation by their mothers and stated that they also first informed their mothers when they started menstruating. Surprise, fear, and embarrassment were common initial reactions, while strong negative or positive emotions were more rare. Only 35% wanted boys and girls together during class discussion, but 89% stated that boys needed to be informed about menstruation. The most frequent reasons cited for noncoed settings were the girls' concern about their comfort in openly discussing menstruation. Thirty-eight percent thought parents should inform other siblings when they started menstruation, although almost half gave specific conditions the parents should consider. The majority thought the fifth to sixth grades were the best times to introduce menstruation content.  相似文献   
69.
70.
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