全文获取类型
收费全文 | 470篇 |
免费 | 0篇 |
专业分类
化学工业 | 15篇 |
轻工业 | 1篇 |
无线电 | 1篇 |
一般工业技术 | 7篇 |
冶金工业 | 445篇 |
自动化技术 | 1篇 |
出版年
2020年 | 1篇 |
2019年 | 1篇 |
2018年 | 1篇 |
2017年 | 1篇 |
2015年 | 1篇 |
2013年 | 1篇 |
2005年 | 1篇 |
2004年 | 1篇 |
1999年 | 8篇 |
1998年 | 106篇 |
1997年 | 56篇 |
1996年 | 43篇 |
1995年 | 27篇 |
1994年 | 23篇 |
1993年 | 36篇 |
1992年 | 4篇 |
1991年 | 8篇 |
1990年 | 8篇 |
1989年 | 13篇 |
1988年 | 6篇 |
1987年 | 4篇 |
1986年 | 9篇 |
1985年 | 6篇 |
1984年 | 1篇 |
1982年 | 4篇 |
1981年 | 3篇 |
1980年 | 7篇 |
1979年 | 1篇 |
1978年 | 5篇 |
1977年 | 19篇 |
1976年 | 50篇 |
1975年 | 3篇 |
1968年 | 1篇 |
1965年 | 1篇 |
1961年 | 2篇 |
1958年 | 1篇 |
1957年 | 2篇 |
1947年 | 1篇 |
1945年 | 2篇 |
1944年 | 1篇 |
1940年 | 1篇 |
排序方式: 共有470条查询结果,搜索用时 31 毫秒
71.
72.
Forty patients with temporal epilepsy were operated on with a stereotaxic technique. Eleven patients had a unilateral localization of the epileptic focus, and in 29 bitemporal foci were diagnosed. In evaluating the results of the treatment the dynamics of the epileptic fits, the peculiarities of changes in the mental status, and the degree of social adaptation were taken into consideration. A postoperative improvement was achieved in 73% of the patients with monotemporal lesions, while in those with bitemporal epilepsy and distinct persistent mental disorders the state was improved in 44% of the cases. Indications for the choice of the zone of destruction depending on the clinical peculiarities of the lesion are presented. 相似文献
73.
Mycobacterium avium complex-serotype 6 was isolated in pure culture on blood agar plates from inocula taken from the heart blood, lungs, liver, kidneys, and spleen of a naturally infected captive female opossum (Didelphis marsupialis virginiana). Repeat cultures from stored tissues and transfer of colonies from original blood agar plates revealed that the mycobacterium grew on tryptose, brilliant green, eosin-methylene blue. Sabouraud glucose, and mycobiotic agar plates and in Fletcher leptospira medium. The cultural, biochemical, and serological characteristics of the test isolate were compared with other mycobacteria. This is the first report to describe the primary isolation of a serotype from the M. avium complex from an animal species on blood agar or in Fletcher broth. In addition, this is the second documented report describing the isolation and identification of a mycobacterial species from the American opossum. 相似文献
74.
75.
76.
77.
78.
79.
80.