全文获取类型
收费全文 | 3610篇 |
免费 | 328篇 |
国内免费 | 30篇 |
专业分类
耳鼻咽喉 | 37篇 |
儿科学 | 199篇 |
妇产科学 | 91篇 |
基础医学 | 479篇 |
口腔科学 | 146篇 |
临床医学 | 407篇 |
内科学 | 862篇 |
皮肤病学 | 53篇 |
神经病学 | 203篇 |
特种医学 | 80篇 |
外科学 | 452篇 |
综合类 | 108篇 |
一般理论 | 6篇 |
预防医学 | 346篇 |
眼科学 | 41篇 |
药学 | 236篇 |
中国医学 | 19篇 |
肿瘤学 | 203篇 |
出版年
2022年 | 18篇 |
2021年 | 42篇 |
2020年 | 31篇 |
2019年 | 49篇 |
2018年 | 57篇 |
2017年 | 42篇 |
2016年 | 45篇 |
2015年 | 63篇 |
2014年 | 74篇 |
2013年 | 120篇 |
2012年 | 143篇 |
2011年 | 137篇 |
2010年 | 135篇 |
2009年 | 111篇 |
2008年 | 115篇 |
2007年 | 177篇 |
2006年 | 140篇 |
2005年 | 143篇 |
2004年 | 162篇 |
2003年 | 102篇 |
2002年 | 132篇 |
2001年 | 116篇 |
2000年 | 131篇 |
1999年 | 131篇 |
1998年 | 58篇 |
1997年 | 65篇 |
1996年 | 64篇 |
1995年 | 47篇 |
1994年 | 47篇 |
1993年 | 45篇 |
1992年 | 92篇 |
1991年 | 64篇 |
1990年 | 71篇 |
1989年 | 80篇 |
1988年 | 83篇 |
1987年 | 75篇 |
1986年 | 60篇 |
1985年 | 83篇 |
1984年 | 59篇 |
1983年 | 49篇 |
1982年 | 37篇 |
1981年 | 22篇 |
1979年 | 51篇 |
1978年 | 37篇 |
1977年 | 38篇 |
1976年 | 21篇 |
1974年 | 23篇 |
1973年 | 19篇 |
1972年 | 29篇 |
1971年 | 21篇 |
排序方式: 共有3968条查询结果,搜索用时 0 毫秒
1.
2.
JAE YOUNG JOUNG DONG GOO KANG HYUCK-JAE CHOI WEON SEO PARK HO KYUNG SEO JIN SOO CHUNG KANG HYUN LEE 《International journal of urology》2006,13(11):1451-1453
Abstract Gastrointestinal stromal tumor (GIST) is a recently described mesenchymal tumor that can develop in any portion of the gastrointestinal tract. The occurrence of a GIST in the urinary tract is rare, but GIST can present as tumor of the urinary tract or invade the urinary tract. This is the first reported case of GIST in the ileal neobladder, which presented as a submucosal tumor. The patient underwent an open exploration and partial resection of the neobladder pouch. 相似文献
3.
Transplacental IgG Subclass Concentrations in Pregnancies at Risk of Haemolytic Disease of the Newborn 总被引:5,自引:0,他引:5
A. Lubenko Marcela Contreras C.H. Rodeck U. Nicolini Julia Savage and H. Chana 《Vox sanguinis》1994,67(3):291-298
The relationship of haemolytic disease of the newborn (HDN) to the transplacental passage of the four IgG subclasses was assessed at varous gestational ages by comparing the maternal and fetal IgG subclass concentrations in 34 pregnancies at risk of HDN with those in 30 pregnancies not at risk. Higher maternal and fetal IgG1 levels were attained in pregnancies at risk of HDN than in pregnancies not at risk. In contrast, a slight decrease in maternal IgG2 and IgG4 levels occurred in pregnancies at risk of HDN, as compared with a slight rise in maternal IgG2 and IgG4 levels in pregnancies not at risk of HDN. Changes in fetal IgG2 and 4 concentrations in either type of pregnancy were very similar, showing only slight increases between the 19th and 34th week of gestation. A slight decrease in maternal IgG3 occurred in both types of pregnancy. In contrast, higher and fairly steady levels of fetal IgG3 were observed in fetuses not at risk of HDN throughout gestation, when compared with those in 'at risk' pregnancies. However, the statistical reliability of these results is not clear since only small numbers of samples were tested and because wide variations in IgG concentrations were observed. The IgG subclass concentrations in 50 paired maternal and cord blood samples were also measured and revealed that IgG1 levels were substantially higher in cord rather than maternal blood; cord and maternal IgG2, 3 and 4 levels, on the other hand, were fairly similar. 相似文献
4.
Firouzan Massoomi Pharm.D. John Savage Pharm.D. Christopher J. Destache Pharm.D. 《Pharmacotherapy》1993,13(1):46-59
Omeprazole is a member of a new class of substituted benzimidazoles. These agents inhibit the proton pump in the gastric parietal cell, blocking the final step in the gastric acid secretory pathway. Omeprazole has been investigated for the treatment of gastric ulcer, duodenal ulcer, gastroesophageal reflux, and various hypersecretory states. The prolonged inhibition of gastric acid secretion allows for once-daily dosing in patients with peptic ulcer disease and gastroesophageal reflux, and once- or twice-daily dosing in patients with Zollinger-Ellison syndrome. Compared with currently available therapies, omeprazole is well tolerated and demonstrates a more rapid ulcer healing rate. It is superior to conventional therapies in the treatment of Zollinger-Ellison syndrome. Side effects are infrequent when the drug is used for the short-term management of ulcers. 相似文献
5.
Defecation dynamics and behavior profiles in encopretic children 总被引:2,自引:0,他引:2
The social competence and behavioral profiles of 38 encopretic children were evaluated, and the social competence and behavioral ratings were correlated with physiologic abnormalities found during anorectal manometric and EMG evaluation and with treatment outcome. When defecation was studied, 66% of encopretic children were not able to defecate rectal balloons and 63% were not able to relax the external anal sphincter during defecation attempts. Total social competence and behavior problem scores were not different for boys able and unable to defecate balloons. Total social competence scores were significantly lower in girls unable to defecate balloons than in those able to (P less than .006), whereas behavior problem scores were similar in girls able to and unable to defecate. We found that persistence of encopresis at 6-month and 12-month follow-up was not related to the social competence (P greater than .2) or behavioral scores (P greater than .2) but was significantly related to the inability to defecate (P less than .01) and to the inability to relax the external sphincter during defecation attempts (P less than .03). 相似文献
6.
S. Ahmed A. L. Sparnon J. P. Savage H. A. Boucaut A. J. Smith 《ANZ journal of surgery》1986,56(9):675-680
One hundred and one children over 1 year of age have had surgery for pelviureteric obstruction over an 11 year period. The common clinical features were abdominal pain, urinary infection or haematuria, but number presented as an incidental finding. Less commonly, the patients presented with an abdominal mass or with hypertension. The diagnosis was usually made on intravenous pyelography (IVP) but in the latter part of the series, renal nuclide scan (RNS) and ultrasonography (US) were preferred. Ninety–three patients had unilateral pyeloplasty, three had bilateral pyeloplasty and five had nephrectomy or heminephrectomy. Whereas initially nephrostomy drainage was used in the majority of patients after pyeloplasty, trend away from nephrostomy evolved in the latter part of the series. With experience, the incidence of postoperative complications was also reduced and there was reduction in the period of hospitalization. Clinical results were consistently satisfactory. Postoperative assessment after pyeloplasty was made by IVP and/or RNS and also US. A review of these investigations showed that RNS provided more factual information of the result when compared with the IVP. 相似文献
7.
8.
9.
Robert S. Savage 《Journal of child psychology and psychiatry, and allied disciplines》1997,38(2):235-246
In two experiments, children were taught a word and then given reminders of that word while reading unfamiliar analogous words. Reminders of the pronunciation of taught words facilitated reading of rime analogous words (e.g. b eak -p eak ) over head analogous words (e.g. bea k- bea n) in Experiment 1, and onset analogous words (e.g. st ilt- st em), over medial analogous words (e.g. e.g. st ilt-mi lk ) in Experiment 2. Importantly, however, privileged improvement for rime and onset analogous words was not evident in the absence of these concurrent prompts. The findings suggest that the analogy model developed by Goswami (1993) may have limited applicability in naturalistic settings. 相似文献
10.