全文获取类型
收费全文 | 2557篇 |
免费 | 377篇 |
国内免费 | 39篇 |
专业分类
耳鼻咽喉 | 34篇 |
儿科学 | 154篇 |
妇产科学 | 85篇 |
基础医学 | 178篇 |
口腔科学 | 43篇 |
临床医学 | 416篇 |
内科学 | 718篇 |
皮肤病学 | 68篇 |
神经病学 | 272篇 |
特种医学 | 306篇 |
外科学 | 279篇 |
综合类 | 47篇 |
预防医学 | 126篇 |
眼科学 | 20篇 |
药学 | 149篇 |
中国医学 | 1篇 |
肿瘤学 | 77篇 |
出版年
2023年 | 61篇 |
2022年 | 17篇 |
2021年 | 36篇 |
2020年 | 109篇 |
2019年 | 30篇 |
2018年 | 102篇 |
2017年 | 85篇 |
2016年 | 79篇 |
2015年 | 67篇 |
2014年 | 107篇 |
2013年 | 126篇 |
2012年 | 78篇 |
2011年 | 85篇 |
2010年 | 94篇 |
2009年 | 126篇 |
2008年 | 80篇 |
2007年 | 86篇 |
2006年 | 77篇 |
2005年 | 56篇 |
2004年 | 45篇 |
2003年 | 35篇 |
2002年 | 42篇 |
2001年 | 50篇 |
2000年 | 40篇 |
1999年 | 41篇 |
1998年 | 90篇 |
1997年 | 106篇 |
1996年 | 86篇 |
1995年 | 74篇 |
1994年 | 56篇 |
1993年 | 60篇 |
1992年 | 51篇 |
1991年 | 42篇 |
1990年 | 46篇 |
1989年 | 82篇 |
1988年 | 68篇 |
1987年 | 49篇 |
1986年 | 50篇 |
1985年 | 54篇 |
1984年 | 34篇 |
1983年 | 17篇 |
1982年 | 20篇 |
1981年 | 16篇 |
1980年 | 21篇 |
1979年 | 14篇 |
1977年 | 13篇 |
1976年 | 17篇 |
1975年 | 12篇 |
1973年 | 11篇 |
1971年 | 13篇 |
排序方式: 共有2973条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
6.
7.
Evaluation and assessment of new disposable strip for determination of plasma potassium concentration. 下载免费PDF全文
I Gibb 《Journal of clinical pathology》1987,40(3):298-301
Overall laboratory reproducibility for the Ames Seralyzer and plasma potassium test strips was less than 4% within the plasma reference range; and linearity extended from 2.1 to 10.2 mmol/l. Neither bilirubin nor lipaemia interfered in the analysis and selectivity for potassium over sodium was 450:1. Laboratory comparison with automated flame photometry and an indirect ion selective electrode showed a Seralyzer bias of +0.10 (+/- 25D 0.26) and +0.11 (0.27) mmol/l. Against flame photometry, comparison of analyses by six doctors from a coronary care unit and four nurses from a renal dialysis unit showed smaller positive biases (0.06 and 0.02 mmol/l) but substantially larger error ranges (0.43 and 0.55 mmol/l, respectively). Some 49% of the nurses' and 37% of the doctors' results differed from laboratory values by more than 0.2 mmol/l. Potassium test strip results proved acceptably comparable and reproducible when produced by an experienced analyst, but greater variability in clinical hands rendered the system unsuitable for precise monitoring of potassium concentration. 相似文献
8.
J Shield C Melville V Novelli G Anderson I Scheimberg D Gibb P Milla 《Archives of disease in childhood》1993,69(4):451-453
Lactobin-R is a commercial hyperimmune bovine colostrum with potent anticryptosporidial activity. It was administered to a 4 year old child with AIDS and severe diarrhoea associated with cryptosporidiosis. There was significant clinical improvement in the diarrhoea and permanent elimination of the parasite from the gut as assessed through serial jejunal biopsy and stool specimens. 相似文献
9.
D T Harryman J A Sidles J M Clark K J McQuade T D Gibb F A Matsen 《The Journal of bone and joint surgery. American volume》1990,72(9):1334-1343
We have demonstrated that certain passive motions of the glenohumeral joint are reproducibly accompanied by translation of the head of the humerus on the glenoid. We investigated the relationship of these translations to the position of the glenohumeral joint and to applied torques and forces in seven isolated glenohumeral joints from fresh cadavera, using a six-degrees-of-freedom position sensor and a six-axis force and torque transducer. Reproducible and significant translation occurred in an anterior direction with glenohumeral flexion and in a posterior direction with extension. We also observed translation with cross-body movement. The translation occurring with flexion was obligate in that it could not be prevented by the application of an oppositely directed force of thirty to forty newtons. Operative tightening of the posterior portion of the capsule increased the anterior translation on flexion and cross-body movement and caused it to occur earlier in the arc of motion compared with the intact glenohumeral joint. Operative tightening of the posterior part of the capsule also resulted in significant superior translation with flexion of the glenohumeral joint. 相似文献
10.
B S Gendeh H Said A G Gibb N S Aziz Z M Zahir 《The Journal of laryngology and otology》1991,105(12):999-1001
In a prospective study on 47 patients, 16 mg of gentamicin per two litres dialysate was administered intraperitoneally at every cycle of intermittent peritoneal dialysis, carried out over the course of several days. Serum gentamicin sampling, pure tone audiometry and caloric tests were performed before and during the treatment. The gentamicin levels reached at the end of the thirtieth cycle were observed to be low. In view of this, the risk of acute ototoxicity was considered to be minimal. This was confirmed by the absence of clinical audiometric or vestibulometric evidence of toxicity. 相似文献