全文获取类型
收费全文 | 125篇 |
免费 | 8篇 |
出版年
2022年 | 4篇 |
2021年 | 3篇 |
2019年 | 2篇 |
2018年 | 5篇 |
2017年 | 7篇 |
2016年 | 4篇 |
2015年 | 6篇 |
2014年 | 3篇 |
2013年 | 8篇 |
2012年 | 7篇 |
2011年 | 3篇 |
2010年 | 9篇 |
2009年 | 9篇 |
2008年 | 5篇 |
2007年 | 3篇 |
2006年 | 7篇 |
2005年 | 5篇 |
2004年 | 2篇 |
2003年 | 13篇 |
2002年 | 1篇 |
2001年 | 9篇 |
1999年 | 3篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1996年 | 3篇 |
1990年 | 1篇 |
1988年 | 1篇 |
1986年 | 1篇 |
1983年 | 1篇 |
1981年 | 1篇 |
1979年 | 1篇 |
1978年 | 2篇 |
1972年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有133条查询结果,搜索用时 31 毫秒
1.
2.
Orlova A. A. Aleskerova L. E. Vasilieva S. G. Morozov A. S. Ismailov A. D. Lobakova E. S. 《Applied Biochemistry and Microbiology》2021,57(7):828-835
Applied Biochemistry and Microbiology - The toxicity of polyethylenimine-based sorbents and their extracts was evaluated, and their effect on the bioluminescence of Photobacterium phosphoreum... 相似文献
3.
Zaitseva A. A. Zaitsev P. A. Gorelova O. A. Bakhareva D. A. Lobakova E. S. 《Russian Journal of Plant Physiology》2022,69(5):1-7
Russian Journal of Plant Physiology - Under the growth experiment, the effect of zinc deficiency in the substrate on a number of growth of barley parameters, the state of the photosynthetic... 相似文献
4.
5.
D. G. Zvyagintsev G. M. Zenova E. S. Lobakova G. M. Nikolaev E. O. Omarova E. A. Ivanova I. B. Savelyev 《Microbiology》2010,79(3):314-320
Associations of cyanobacteria and actinomycetes were formed experimentally from the cyanobacterium Anabaena variabilis ATCC 29413 and the streptomycetes isolated from apogeotropic roots of sago plants. Based on their phenotypic properties and
the 16S rRNA gene sequencing, the streptomycetes were identified as representatives of Streptomyces pluricolorescens (strains 1 and 2). Cyanobacteria developing in monoculture and in association with an actinomycete were essentially different
in their morphological and physiological-biochemical characteristics. In associations, cyanobacteria showed a higher (by tens
of times) nitrogen-fixing activity compared to the monoculture and the morphological modifications of which were not observed
in the monoculture (increase in cell size, increase in the portion of heterocysts among vegetative cells, appearance of the
forms of unbalanced growth of cyanobacteria as giant, disc-shaped, curved, and rhomboid cells). At extremely low humidity
(aw 0.50), associated cyanobacterial cells remained viable, whereas in the monoculture, chlorophyll decomposition and cells death
occurred. The methods of high-resolution (H1 600 MHz) nuclear magnetic resonance (NMR) and pulsed-gradient spin echo NMR revealed a fraction of mobile protons in lyophilized
samples of the cyanobacterium-actinomycete association, which was evidence of the presence of free water. This fraction was
not found in the lyophilized samples of cyanobacterial and streptomycete monocultures. The revealed differences can explain
the survival of cyanobacterial cells in associations. 相似文献
6.
Vasilieva S. G. Semenova L. R. Selyakh I. O. Chivkunova O. B. Shcherbakov P. N. Baulina O. I. Gorelova O. A. Lobakova E. S. 《Applied Biochemistry and Microbiology》2022,58(1):62-68
Applied Biochemistry and Microbiology - The immobilization of cells of a mixed culture of the microalgae (MA) Micractinium sp. NAMSU A-19 and cyanobacteria (CB) Synechococcus sp. 1Dp66E-1 on a... 相似文献
7.
Karpova Olga V. Vinogradova Elizaveta N. Lobakova Elena S. 《Biochemistry. Biokhimii?a》2022,87(10):1187-1198
Biochemistry (Moscow) - Due to the unique capability of modulating cell membrane potential upon photoactivation, channelrhodopsins of green (Chlorophyta) and cryptophytic (Cryptophyta) algae are... 相似文献
8.
C. ALBUQUERQUE F. MORINHA J. MAGALHÃES J. REQUICHA I. DIAS H. GUEDES-PINTO E. BASTOS C. VIEGAS 《Journal of genetics》2015,94(4):651-659
Elevated levels of interleukin-1 (IL-1) have been shown to amplify the inflammatory response against periodontopathogenic bacteria. In humans, polymorphisms in the IL1A and IL1B genes are the most well-studied genetic polymorphisms associated with periodontal disease (PD). In contrast to human, there is a lack of knowledge on the genetic basis of canine PD. A case–control study was conducted in which a molecular analysis of dog IL1A and IL1B genes was performed. Of the eight genetic variants identified, seven in IL1A gene and one in IL1B gene, IL1A/1_g.388A >C and IL1A/1_g.521T >A showed statistically significant differences between groups (adjusted OR (95% CI): 0.15 (0.03–0.76), P= 0.022; 5.76 (1.03–32.1), P= 0.046, respectively). It suggests that in the studied population the IL1A/1_g.388C allele is associated with a decreased PD risk, whereas the IL1A/1_g.521A allele can confer an increased risk. Additionally, the IL1A/2_g.515G >T variation resulted in a change of amino acid, i.e. glycine to valine. In silico analysis suggests that this change can alter protein structure and function, predicting it to be deleterious or damaging. This work suggests that IL1 genetic variants may be important in PD susceptibility in canines. 相似文献
9.
Iris M Costa Tallybia HT Nasser Marilene Demasi Rafaella MP Nascimento Luis ES Netto Sayuri Miyamoto Fernanda M Prado Gisele Monteiro 《BMC microbiology》2011,11(1):268
Background
The gene YCL047C, which has been renamed promoter of filamentation gene (POF1), has recently been described as a cell component involved in yeast filamentous growth. The objective of this work is to understand the molecular and biological function of this gene.Results
Here, we report that the protein encoded by the POF1 gene, Pof1p, is an ATPase that may be part of the Saccharomyces cerevisiae protein quality control pathway. According to the results, Δpof1 cells showed increased sensitivity to hydrogen peroxide, tert-butyl hydroperoxide, heat shock and protein unfolding agents, such as dithiothreitol and tunicamycin. Besides, the overexpression of POF1 suppressed the sensitivity of Δpct1, a strain that lacks a gene that encodes a phosphocholine cytidylyltransferase, to heat shock. In vitro analysis showed, however, that the purified Pof1p enzyme had no cytidylyltransferase activity but does have ATPase activity, with catalytic efficiency comparable to other ATPases involved in endoplasmic reticulum-associated degradation of proteins (ERAD). Supporting these findings, co-immunoprecipitation experiments showed a physical interaction between Pof1p and Ubc7p (an ubiquitin conjugating enzyme) in vivo.Conclusions
Taken together, the results strongly suggest that the biological function of Pof1p is related to the regulation of protein degradation.10.
PAULO R. GUIMARES UMBERTO KUBOTA BRUNO ZACARIAS GOMES RAFAEL LUÍS FONSECA CLUDIA BOTTCHER MAURO GALETTI 《Austral ecology》2006,31(1):95-98
Abstract: Red‐rumped agoutis (Dasyprocta leporina) are important seed dispersers/predators of Neotropical large‐seeded plants. Several species of seeds cached by agoutis have an edible reward, in contrast to temperate rodent‐dispersed diaspores. The quick meal hypothesis states that the presence of a reward such as edible pulp will enhance the efficiency of rodents as seed disperses by satiating the animal and, consequently, reducing seed predation and enhancing hoarding. In this study, this hypothesis was tested using as the reference system the pulp and seeds of Hymenaea courbaril. Seeds with and without pulp were offered to agoutis and the behaviour of each individual was recorded. Since the probability of predation and hoarding were complementary, we used the probability of predation. The proportion of agoutis that preyed on at least one seed was similar for seeds with (42.8% of individuals) and without (40.0% of individuals) pulp. In agoutis that preyed upon at least one seed, the probability that they killed a seed did not differ between seeds with (0.17 ± 0.03) and without (0.20 ± 0.08) pulp. Hence, these results do not support the ‘quick meal hypothesis’. 相似文献