全文获取类型
收费全文 | 176篇 |
免费 | 1篇 |
出版年
2023年 | 1篇 |
2021年 | 4篇 |
2020年 | 1篇 |
2019年 | 2篇 |
2018年 | 3篇 |
2017年 | 4篇 |
2016年 | 5篇 |
2015年 | 3篇 |
2014年 | 6篇 |
2013年 | 12篇 |
2012年 | 8篇 |
2011年 | 6篇 |
2010年 | 13篇 |
2009年 | 3篇 |
2008年 | 9篇 |
2007年 | 8篇 |
2006年 | 11篇 |
2005年 | 6篇 |
2004年 | 9篇 |
2003年 | 5篇 |
2002年 | 11篇 |
2001年 | 7篇 |
2000年 | 4篇 |
1999年 | 3篇 |
1998年 | 2篇 |
1996年 | 1篇 |
1992年 | 1篇 |
1991年 | 5篇 |
1990年 | 3篇 |
1989年 | 5篇 |
1988年 | 4篇 |
1987年 | 2篇 |
1986年 | 1篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1982年 | 1篇 |
1979年 | 1篇 |
1976年 | 1篇 |
1974年 | 1篇 |
1973年 | 1篇 |
1972年 | 1篇 |
排序方式: 共有177条查询结果,搜索用时 171 毫秒
41.
42.
Radchenko V. I. Kanzeparova A. N. Somov A. A. Grigorov I. V. 《Russian Journal of Marine Biology》2021,47(7):534-547
Russian Journal of Marine Biology - The distribution and abundance of four common myctophid fish species in the upper epipelagic layer of the northeastern North Pacific in winter were analyzed... 相似文献
43.
I. A. Chereshnev O. A. Radchenko A. V. Petrovskaya 《Russian Journal of Marine Biology》2011,37(6):446-457
The taxonomic status and relationships of the Askoldia, Pholidapus, and Opisthocentrus genera of the subfamily Opisthocentrinae are discussed based on comparative morphological and molecular genetic analysis.
Isolation of the Pholidapus from the Opisthocentrus and the greater similarity of the former with the Askoldia were revealed. Morphological and genetic differences could not allow one to consider the Pholidapus as being within the Opisthocentrus. O. ocellatus and O. tenuis were closer within the Opisthocentrus and O. zonope was significantly different from these two species. 相似文献
44.
45.
Alexei N. Nekrasov Vitaly V. Radchenko Tatiana M. Shuvaeva Vladimir I. Novoselov Eugenyi E. Fesenko Valery M. Lipkin 《Journal of biomolecular structure & dynamics》2013,31(5):455-462
Abstract The object of the present study is the verification of a new approach to the design of the active truncated forms of enzymes. The method is based on a new way of investigating the protein sequences—the ANalysis of Informational Structure (ANIS). The analysis of informational structure allows to determine the hierarchically organized structures (IDIC-trees) formed by the sites with the Increased Degree of Informational Coordination between residues. The proposed approach involves the consequent removal of the fragments corresponding to the individual IDIC-trees from the wild-type enzyme sequences. The described procedure was applied to the design of the active truncated form of human 1-CYS peroxiredoxin (PrxVI). Two variants of the PrxVI truncated sequences were proposed according to ANIS method. These truncated forms of the enzyme were expressed in E. coli and purified. The respective antioxidant activities were measured. It was shown that one of the truncated recombinant proteins retains more than 90% of the wild-type PrxVI enzymatic activity. According to the results of our study we can assume that ANIS method can be an effective tool for the design of the active truncated forms of the enzymes or the chimeric proteins which combine the enzymatic activities of their wild-type prototypes. 相似文献
46.
The multi-species ant assemblages were studied in the Crimea Mountains, in 9 types of plant associations in the plateau pastures
as well as on the southern and northern slopes of the Main Range. A list of 18 ant species with data on their distribution
in biotopes and also layers and the structure of their foraging territories is given. The hierarchical organization of multi-species
ant assemblages and different strategies of nest location of the influents depending on the dominant species and its territoriality
were investigated. Territoriality of each dominant species was determined by the frequency of foraging areas without nests
of other species. Depending on dominant territoriality and the number of dominant species, the following classification of
multi-species assemblages is proposed. (1) Monodominant assemblages with weakly expressed territoriality of the dominant species. Low density of the workers of Camponotus aethiops in the foraging territory determines weak interactions with influent species. The settling pattern of the influents shows
no evident dependence on the dominant. Weakly expressed territoriality of the dominant allows non-territorial species to exist
on the dominant’s territory. Such species were not found in other types of ant assemblages. (2) Monodominant assemblages with strongly expressed territoriality of the dominant species. The settling pattern of the influents shows the subordinate species to avoid those of higher ranks in the hierarchy, thus
decreasing the probability of conflicts. The influents settle in the neutral zones as well as in the foraging territory of
the dominant, so as to reduce competition with the subdominant species Formica cunicularia. Such a strategy reduces the probability of interspecific conflicts in biotopes with fewer vegetation layers than in the
forests. (3) Bidominant assemblages with a variable dendrobiont dominant are typical among forest assemblages. Coexistence of two dominant species is possible when foraging of one of them is completely
or partly restricted to one vegetation layer. The subdominant species avoid settling in the foraging territory of the dominant
that occupies the same layer. When the dendrobiont dominant Crematogaster schmidti drops out of the assemblage, it (and its role in the assemblage) is replaced by other dendrobiont species Lasius emarginatus which otherwise acts as the 1st order subdominant in C. schmidti assemblages. (4) Polydominant assemblages are characterized by the presence of as many as 3 dominant species, namely Crematogaster schmidti, Camponotus aethiops, and Plagiolepis tauricus. The coexistence of the dominants is possible due to use of different layers (one species is a dendrobiont, the other two
are herpeto-hortobionts), different activity periods (round-the-clock in Crematogaster schmidti, night in Camponotus aethiops, and daytime in P. tauricus), and different size classes of the workers (3rd, 5th, and 1st, respectively). The different size classes of workers reduce
competition for food. Thus, when the number of dominant species in the assemblage increases, so does the number of mechanisms
facilitating their coexistence. 相似文献
47.
48.
Sequence variation ofthe mitochondrial COI, cytochrome b, and 16S RNA genes, as well as nuclear RNF213 gene was examined in the genera Lycenchelys and Lycodapus with the purpose of determination of their positions in the system of the family Zoarcidae. It was demonstrated that the genus Lycodapus was considerably closer to the generic group of Lycogramminae (Lycogrammoides, Bothrocara, Allolepis, Bothrocarhichthys) than the genus Lycenchelys. However, on the phylogenetic trees both of these genera were located in the clade of the subfamily Lycodinae. Genetic heterogeneity of the genus Lycenchelys, represented by two species groups differing in distribution patterns (northeastern Pacific and Antarctic) and showing more profound differences than the genera of subfamily Lycodinae, was demonstrated. 相似文献
49.
50.