全文获取类型
收费全文 | 2631篇 |
免费 | 125篇 |
国内免费 | 30篇 |
专业分类
耳鼻咽喉 | 10篇 |
儿科学 | 96篇 |
妇产科学 | 25篇 |
基础医学 | 520篇 |
口腔科学 | 129篇 |
临床医学 | 293篇 |
内科学 | 550篇 |
皮肤病学 | 114篇 |
神经病学 | 49篇 |
特种医学 | 283篇 |
外科学 | 278篇 |
综合类 | 54篇 |
预防医学 | 98篇 |
眼科学 | 36篇 |
药学 | 154篇 |
中国医学 | 1篇 |
肿瘤学 | 96篇 |
出版年
2015年 | 35篇 |
2014年 | 35篇 |
2013年 | 89篇 |
2012年 | 49篇 |
2011年 | 40篇 |
2010年 | 53篇 |
2009年 | 46篇 |
2008年 | 53篇 |
2007年 | 66篇 |
2006年 | 62篇 |
2005年 | 42篇 |
2004年 | 35篇 |
2003年 | 36篇 |
2002年 | 37篇 |
2001年 | 40篇 |
2000年 | 33篇 |
1999年 | 43篇 |
1998年 | 87篇 |
1997年 | 97篇 |
1996年 | 108篇 |
1995年 | 75篇 |
1994年 | 78篇 |
1993年 | 78篇 |
1992年 | 50篇 |
1991年 | 46篇 |
1990年 | 48篇 |
1989年 | 73篇 |
1988年 | 66篇 |
1987年 | 61篇 |
1986年 | 63篇 |
1985年 | 39篇 |
1984年 | 61篇 |
1983年 | 37篇 |
1982年 | 34篇 |
1981年 | 38篇 |
1980年 | 55篇 |
1979年 | 27篇 |
1978年 | 32篇 |
1977年 | 38篇 |
1976年 | 45篇 |
1975年 | 41篇 |
1972年 | 30篇 |
1971年 | 28篇 |
1970年 | 27篇 |
1965年 | 53篇 |
1964年 | 50篇 |
1963年 | 47篇 |
1962年 | 41篇 |
1961年 | 40篇 |
1960年 | 65篇 |
排序方式: 共有2786条查询结果,搜索用时 15 毫秒
11.
12.
GP SCHWAB AL BLUM E BODNER B DALLEMAGNE K GLASER H KOOP F PACE W RÖSCH JR SIEWERT G WETSCHER 《Journal of gastroenterology and hepatology》1997,12(12):785-789
Gastroesophageal reflux disease (GERD) is the most common disease of the upper gastrointestinal tract. With the introduction of proton pump inhibitors medical treatment of GERD has been significantly improved. However, the development of laparoscopic antireflux surgery resulted in an increasing interest of surgeons in this disease. An interactive meeting was organized in order to develop an agreement between gastoenterologists and surgeons regarding therapeutic decisions and this is the main topic of this paper. 相似文献
13.
A. A. SANTOS J. XAVIER-NETO A. T. SANTIAGO JR. M. A. N. SOUZA A. S. MARTINS F. ALZAMORA F. H. ROLA 《Acta physiologica (Oxford, England)》1991,143(3):261-269
The effect of acute and sequential volaemic changes on the gastroduodenal flow of saline was assessed in 23 anaesthetized dogs following two different experimental protocols. Hypervolaemia, by i. v. infusion of saline, induced a gradual decrease on gastroduodenal flow which amounted to 76% below control values (P < 0.001) when volaemic expansion attained 5% of body weight. This effect was volume dependent (17% increase on gastroduodenal flow per volume of infused saline equivalent to 0.5% of body weight, P < 0.001), lasted for at least 90 minutes after infusion was completed and was also obtained by expanding previously bled animals. Hypovolaemia due to bleeding was followed by an increase on gastroduodenal flow of about 88% above control values (P < 0.05) when haemorrhage was equal to 3% of body weight. This effect was also volume dependent (23 % increase on gastroduodenal flow per volume of blood shed equivalent to a 0.5% of body weight, P < 0.01) and was reversed after blood volume was restored. These modifications in the resistance of the gastroduodenal segment to the flow of liquid due to acute volaemic changes suggest that the extracellular fluid volume modulates the contractile activity of the gastroduodenal portion of the gut possibly to set a gastroduodenal handling of liquid adequate to cope with volaemic imbalances. 相似文献
14.
Thorough sports vision evaluations (SVE) utilizing a 30-test battery of established sports vision tests, variations of commonly accepted procedures, and newly designed instruments and/or methods were performed by the Wisconsin Sports Vision Project (WSVP) staff on 232 teenage male and female high school student athletes. Tests are described and results reveal that a state tournament qualifying girls volleyball team (n = 8) demonstrated significantly better visual skills and abilities than 1) the male and female general high school athlete sample (n = 224), 2) the female athlete sample (n = 78), and 3) the other female volleyball players in the sample (n = 46) in some areas of dominant eye vision contrast sensitivity, distance judgement, dynamic visual acuity, tachistoscopic skills, low light and glare-affected vision. 相似文献
15.
16.
17.
KLEPP K-I.; ULVIK R.J.; MATTHIESEN S.B.; HANNAN P.; JACOBS D.R. JR.; AARO L.E. 《European journal of public health》1993,3(1):38-42
The general public of the City of Bergen, Norway was Invitedto participate in a cholesterol screening programme in October1988. Participants received the results of the cholesterol screeningand nutritional information from trained health personnel. Ashort questionnaire was mailed to all 354 participants 12weeks after the initial cholesterol screening. In March 1990,all participants were invited to have their cholesterol levelsre-examined. Psychosocial factors believed to be predictiveof future serum cholesterol changes were assessed at baselinealong with demographic variables. The majority of participants(61%) reduced their cholesterol level from October 1988 to March1990, and the average reduction in cholesterol level for thetotal population was 4.0%. Baseline cholesterol levels, beingconfident of one's own ability to change one's diet (self-efficacy),seeing heart disease risk reduction as very important, and maritalstatus were factors that significantly predicted successfulcholesterol reduction 18 months later. 相似文献
18.
Postoperative radiation therapy in the management of lung cancer 总被引:1,自引:0,他引:1
Postoperative radiation therapy for lung cancer is still controversial. In a 9-year period, 69 patients with non-oat-cell carcinoma of the lung (16% stage I, 26% stage II, and 58% stage III) received such therapy. The radiation dose was less than 5,000 cGy in 42 patients, 5,000-5,900 cGy in 16, and 6,000 cGy or more in 11; follow-up ranged from 24 to 64 months. Actuarial survival at 2 and 4 years was 50% and 16%, respectively, for squamous cell carcinoma, and 40% and 26% for adenocarcinoma. The 5-year survival for stages I, II, and III cancer was 29%, 17%, and 19%, respectively. Histologic findings and type of surgery did not affect survival, but the radiation dose apparently did. The 3-year survival for patients who received less than 6,000 cGy was 35%, compared with 73% for patients who received higher doses. In eight patients, treatment failed within the irradiated volume: all had received doses of less than 6,000 cGy, and the volume in three was judged to be inadequate. 相似文献
19.
20.
MARTIN J. BOHN JR JOYCE L. CARBONELL EDWIN I. MEGARGEE 《Criminal behaviour and mental health : CBMH》1995,5(1):14-33
This study investigated the applicability and utility of Megargee and Bohn's MMPI-based offender classification system in correctional mental health units (MHUs). Previous studies found that 11 MHU samples (n = 1723) had substantially more offenders classified in the more pathological MMPI types than did 21 samples (n = 5881) drawn from general male populations in US prisons. In this study of 63 severely disturbed felons, 43% belonged to the most pathological type (‘group How’). Comparing MHU patients with general offenders from the same IvfIvIPI types on staff ratings and case history variables, we found that the MHU patients were significantly poorer in adjustment. Within the MHU sample, there was no difference in case history variables or adjustment ratings between those in the most and least severe MMPI types. These findings differed from those of studies using less severely disturbed, more heterogeneous, MHU populations. It was concluded that, in settings in which the entire population is flagrantly disturbed, the MMPI-based system is more useful in screening potential admissions than it is in making meaningful distinctions among those already admitted. 相似文献