全文获取类型
收费全文 | 436篇 |
免费 | 7篇 |
出版年
2021年 | 4篇 |
2020年 | 4篇 |
2019年 | 3篇 |
2018年 | 3篇 |
2017年 | 8篇 |
2016年 | 9篇 |
2015年 | 8篇 |
2014年 | 14篇 |
2013年 | 17篇 |
2012年 | 17篇 |
2011年 | 16篇 |
2010年 | 14篇 |
2009年 | 12篇 |
2008年 | 34篇 |
2007年 | 21篇 |
2006年 | 10篇 |
2005年 | 22篇 |
2004年 | 22篇 |
2003年 | 22篇 |
2002年 | 13篇 |
2001年 | 15篇 |
2000年 | 13篇 |
1999年 | 5篇 |
1998年 | 6篇 |
1992年 | 2篇 |
1991年 | 5篇 |
1990年 | 9篇 |
1989年 | 7篇 |
1988年 | 3篇 |
1986年 | 10篇 |
1985年 | 6篇 |
1984年 | 6篇 |
1983年 | 4篇 |
1982年 | 2篇 |
1980年 | 1篇 |
1979年 | 2篇 |
1978年 | 2篇 |
1977年 | 3篇 |
1976年 | 4篇 |
1975年 | 4篇 |
1974年 | 9篇 |
1973年 | 5篇 |
1972年 | 11篇 |
1971年 | 3篇 |
1970年 | 5篇 |
1969年 | 2篇 |
1968年 | 5篇 |
1967年 | 5篇 |
1966年 | 5篇 |
1965年 | 4篇 |
排序方式: 共有443条查询结果,搜索用时 15 毫秒
241.
Tsivileva OM Loshchinina EA Makarov OE Nikitina VE 《Prikladnaia biokhimiia i mikrobiologiia》2012,48(3):313-322
The auxin formation in a submerged culture of the xylotrophic basidiomycete Lentinus edodes (Berk.) Sing (Lentinula edodes (Berk.) Pegler) (shiitake) is studied. Biologically active substances of an indole nature are identified, "the effect of small doses" of which lies in not only the stimulation of growth of the mycelium (indole-3-acetic acid, 2 x 10(-7)-2 x 10(-4) g/l), but also in the induction of tryptophan-independent paths of auxin biosynthesis. The above-mentioned path is realized in the presence of exogenous indole (1 x 10(-3)-1 x 10(-4) g/l), as well as while inducing the biosynthesis of indole-3-acetic acid by its microadditives (1 x 10(-5)-1 x 10(-8) g/l), and is accompanied by the formation of anthranilic acid (up to 1.5 mg/l). Induction of the generative development stage ofshiitake by indole derivatives is revealed. It was found that among the studied compounds only indoleacetamide at a concentration of an order of x 10(-4) g/l in the culture fluid of L. edodes had a pronounced stimulatory effect on the formation of shiitake's brown mycelial film. 相似文献
242.
M N Nilovski? N A Kraskina V D Nikitina N V Kholchev 《Zhurnal mikrobiologii, epidemiologii, i immunobiologii》1978,(4):92-97
The authors suggest a method of obtaining purified antilymphocytic antibodies by mean of a specific immunosorbent of human or mouse lymphocytes fixated with glutharic aldehyde Such immunosorbents subjected to special treatment could be used repeatedly; their sorptive capacity was retained in such case. Only from 5 to 12% of the activity could be obtained from immunosorbents sorbed from the serum with 77--93% activity. In comparison with the initial serum, purification was from 6- to 15-fold. Thus, the suggested method provided considerable purification of the antilymphocytic preparations and permitted to obtain highly active antilymphocytic antibodies. 相似文献
243.
244.
T B Nesterova I V Nikitina S M Zakian N B Rubtsov V G Matveeva S I Radjabli 《Cytogenetics and cell genetics》1991,56(3-4):185-188
Evidence is presented for the chromosome localization of seven silver fox genes by the use of a panel of fox x Chinese hamster somatic cell hybrids. AK1, GOT2, and ALDOC are assigned to chromosome VFU2, PGP to chromosome VFU38, BLVR to chromosome VFU5, ACP1 to chromosome VFU8, and ITPA to chromosome VFU14. The genetic map of 29 fox genes is compared with those reported for man and other mammals. The results we obtained support and extend our previous suggestion that the formation of the Canidae branch of the Carnivora phylogenic tree was associated with a great increase in the rate of reorganization of the ancestral karyotype. 相似文献
245.
246.
247.
248.
249.
250.
Shchepkin DV Kopylova GV Nikitina LV 《Biochemical and biophysical research communications》2011,(1):104-108
Interaction of myosin with actin in striated muscle is controlled by Ca2+ via thin filament associated proteins: troponin and tropomyosin. In cardiac muscle there is a whole pattern of myosin and tropomyosin isoforms. The aim of the current work is to study regulatory effect of tropomyosin on sliding velocity of actin filaments in the in vitro motility assay over cardiac isomyosins. It was found that tropomyosins of different content of α- and β-chains being added to actin filament effects the sliding velocity of filaments in different ways. On the other hand the velocity of filaments with the same tropomyosins depends on both heavy and light chains isoforms of cardiac myosin. 相似文献