全文获取类型
收费全文 | 276篇 |
免费 | 15篇 |
国内免费 | 2篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 6篇 |
妇产科学 | 3篇 |
基础医学 | 17篇 |
口腔科学 | 7篇 |
临床医学 | 33篇 |
内科学 | 47篇 |
皮肤病学 | 10篇 |
神经病学 | 5篇 |
特种医学 | 18篇 |
外科学 | 81篇 |
综合类 | 4篇 |
预防医学 | 13篇 |
眼科学 | 20篇 |
药学 | 8篇 |
肿瘤学 | 20篇 |
出版年
2021年 | 7篇 |
2020年 | 2篇 |
2019年 | 4篇 |
2018年 | 10篇 |
2017年 | 3篇 |
2016年 | 5篇 |
2015年 | 4篇 |
2014年 | 6篇 |
2013年 | 7篇 |
2012年 | 8篇 |
2011年 | 13篇 |
2010年 | 4篇 |
2009年 | 6篇 |
2008年 | 8篇 |
2007年 | 13篇 |
2006年 | 6篇 |
2005年 | 2篇 |
2004年 | 6篇 |
2003年 | 4篇 |
2002年 | 3篇 |
2001年 | 3篇 |
2000年 | 7篇 |
1999年 | 7篇 |
1998年 | 14篇 |
1997年 | 10篇 |
1996年 | 7篇 |
1995年 | 3篇 |
1994年 | 4篇 |
1992年 | 2篇 |
1991年 | 2篇 |
1990年 | 6篇 |
1989年 | 10篇 |
1988年 | 9篇 |
1987年 | 5篇 |
1986年 | 12篇 |
1985年 | 16篇 |
1984年 | 7篇 |
1983年 | 9篇 |
1980年 | 3篇 |
1978年 | 2篇 |
1977年 | 5篇 |
1976年 | 3篇 |
1975年 | 6篇 |
1974年 | 3篇 |
1973年 | 2篇 |
1971年 | 1篇 |
1970年 | 3篇 |
1969年 | 3篇 |
1967年 | 1篇 |
1965年 | 2篇 |
排序方式: 共有293条查询结果,搜索用时 868 毫秒
31.
32.
Experimental ischemic colitis was produced in 42 dogs by either ligation (ligation group, n=18) or temporary occlusion of the mesenteric vessels (temporary occlusion group, n=24) and changes in the local blood flow in the bowel were measured by the hydrogen clearance method. Tissue damage similar to damage seen in patients with ischemic colitis were produced in both of these groups. There was a close correlation between the severity of the ischemia and the ensuing tissue damages. In the ligation group, the tissue damages ranging from erosions or minute ulcerations to diffuse ulcerations occurred when the local blood flow was measured at 30 minutes after the ligation and was below 50 per cent of the basal flow. In the temporary occlusion group, the tissue damages were observed when the local blood flow was below 40 per cent of the basal flow and the occlusion was maintained for over two hours. 相似文献
33.
34.
Allopurinol inhibits uric acid accumulation in the rat brain following focal cerebral ischemia 总被引:1,自引:0,他引:1
H Kanemitsu A Tamura T Kirino H Oka K Sano T Iwamoto M Yoshiura K Iriyama 《Brain research》1989,499(2):367-370
Uric acid (UA) in the rat brain was measured by HPLC with an electrochemical detector following focal ischemia. At 24 h after the operation, the UA level in the ischemic center was 105.47 +/- 8.39 nmol/g tissue, whereas it was 8.36 +/- 1.86 in the sham-operated group. Allopurinol, xanthine oxidase inhibitor, almost completely inhibited this UA accumulation. These data demonstrate that the UA increase in the ischemic brain is due to the xanthine oxidase reaction. 相似文献
35.
The results of anorectal manometry in 11 children with complete rectal prolapse were evaluated. Abnormalities of sphincter
control or bowel movements occurred in 8 out of these 11 patients. Anal canal pressure of the patients was lower than in the
controls, but there was no significant difference of resting pressure profiles of the anorectum between the patients and the
controls. Rectoanal reflex was present in all the patients and in the controls. Rectal compliance was significantly lower
in the patients, but there was no correlation between rectal compliance and sphincter control of the patients. 相似文献
36.
37.
38.
39.
Kazuo Matsumoto MD Tohru Masuda Hideki Terashima Koichi Matsumoto Keiji Iriyama Hiroshi Suzuki 《Surgery today》1988,18(3):369-372
Serum levels of immunosuppressive substance (IS) were determined in 99 patients with gastric cancer and in 32 healthy individuals.
The serum IS levels in the patients (769.6±314.8 μg/ml) were significantly higher than those in the healthy individuals (549.7±104.7
μg/ml). A multivariate analysis on the correlation between serum IS levels and clinicopathological findings in the patients
disclosed that there was a close correlation between the serum IS levels and the depth of invasion, in particular, the prognostic
serosal invasion, metastasis to the distal lymph nodes and peritoneal dissemination. There was, however, no correlation between
the serum IS level and hepatic metastasis. Serum IS levels were higher in patients with well-differentiated adenocarcinoma
than in those with poorly differentiated adenocarcinoma or signet ring cell carcinoma. A serum IS level higher than 1000 μg/ml
indicates the possibility that the tumor is only palliatively resectable because of involvement of the distal lymph nodes
or peritoneal dissemination. 相似文献
40.