全文获取类型
收费全文 | 1670篇 |
免费 | 354篇 |
国内免费 | 5篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 54篇 |
妇产科学 | 174篇 |
基础医学 | 34篇 |
口腔科学 | 11篇 |
临床医学 | 1072篇 |
内科学 | 224篇 |
皮肤病学 | 13篇 |
神经病学 | 54篇 |
特种医学 | 55篇 |
外科学 | 71篇 |
综合类 | 25篇 |
预防医学 | 154篇 |
眼科学 | 2篇 |
药学 | 47篇 |
肿瘤学 | 38篇 |
出版年
2023年 | 58篇 |
2022年 | 6篇 |
2021年 | 29篇 |
2020年 | 30篇 |
2019年 | 9篇 |
2018年 | 83篇 |
2017年 | 101篇 |
2016年 | 106篇 |
2015年 | 99篇 |
2014年 | 98篇 |
2013年 | 107篇 |
2012年 | 41篇 |
2011年 | 44篇 |
2010年 | 67篇 |
2009年 | 87篇 |
2008年 | 61篇 |
2007年 | 50篇 |
2006年 | 47篇 |
2005年 | 38篇 |
2004年 | 41篇 |
2003年 | 27篇 |
2002年 | 21篇 |
2001年 | 45篇 |
2000年 | 28篇 |
1999年 | 48篇 |
1998年 | 41篇 |
1997年 | 63篇 |
1996年 | 55篇 |
1995年 | 53篇 |
1994年 | 42篇 |
1993年 | 33篇 |
1992年 | 35篇 |
1991年 | 24篇 |
1990年 | 36篇 |
1989年 | 25篇 |
1988年 | 24篇 |
1987年 | 24篇 |
1986年 | 26篇 |
1985年 | 19篇 |
1984年 | 16篇 |
1983年 | 10篇 |
1982年 | 11篇 |
1981年 | 14篇 |
1980年 | 12篇 |
1979年 | 15篇 |
1978年 | 11篇 |
1977年 | 11篇 |
1976年 | 9篇 |
1975年 | 11篇 |
1974年 | 6篇 |
排序方式: 共有2029条查询结果,搜索用时 15 毫秒
1.
2.
Fluid role boundaries: exploring the contribution of the advanced nurse practitioner to multi‐professional palliative care 下载免费PDF全文
3.
4.
MR compatibility of Guglielmi detachable coils 总被引:6,自引:0,他引:6
5.
O Rasmussen E Winther J Arnfred K Hermansen 《European journal of clinical nutrition》1988,42(11):953-961
Recently, we demonstrated that spaghetti caused significantly lower glycaemic response than rice and potato in insulin-dependent diabetic (IDDM) subjects and that this difference was also present when spaghetti and potato were taken as part of a mixed meal. We have now compared the blood glucose and insulin responses to 50 g of carbohydrate in the form of white bread, potato and white spaghetti in 6 non-insulin-dependent diabetic (NIDDM) patients. The blood glucose response after white spaghetti observed over a 3-h period was only 60 +/- 10 per cent (P less than 0.02) of that seen in response to potato (395 +/- 116 mmol/l x 180 min vs 641 +/- 108 mmol/l x 180 min) and 47 +/- 9 per cent (P less than 0.01) of that seen in response to white bread (395 +/- 116 mmol/l x 180 min vs 805 +/- 93 mmol/l x 180 min). Insulin responses showed an identical pattern reflecting the glycaemic responses. To see if the difference in the glucose responses in NIDDM patients is preserved if these carbohydrate-rich foods are taken as part of a mixed meal we looked at the blood glucose and insulin responses to 50 g of carbohydrate in the form of potato and white spaghetti when ingested together with bolognese sauce (167 g) in 7 NIDDM patients.(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
6.
BEVERLY HAVENS RN MN MPH INGRID SWENSON RN DPH 《Journal of obstetric, gynecologic, and neonatal nursing : JOGNN / NAACOG》1986,15(5):406-411
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
7.
8.
9.
10.