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51.
A G Ponomareva V N Tsarev R V Ushakov T V Ushakova G P Grineva 《Antibiotiki i khimioterapii͡a》1991,36(10):44-46
The results of identification and sensitivity assay of 156 strains of pathogens causing odontogenic infections are presented. In the sensitivity assay antibacterial drugs were used. 42.3 percent of the strains were obligate anaerobes belonging to Bacteroides, Fusobacterium, Peptococcus, Peptostreptococcus, Veillonella and Actinomyces. Significant differences in the microbial sensitivity to the drugs used for general and local therapy were detected. There was observed high sensitivity of the obligate anaerobes to gramicidin (0.02 micrograms/ml), nitazol (10 micrograms/ml), levomycetin and tetracycline (60 micrograms/ml). Antiseptics such as dioxidine and chlorhexidine used locally showed satisfactory results. The above mentioned drugs and especially levomycetin were also rather active against facultative organisms in associations of pathogens causing odontogenic infections: Bacillus coagulans, B. licheniformis, Pseudomonas sp., Acinetobacter calcoaceticus, Staphylococcus sp. and Streptococcus sp. 相似文献
52.
ANA P. MARTÍNEZ‐FALCÓN M. ÁNGELES MARCOS‐GARCÍA CECILIA DÍAZ‐CASTELAZO VICTOR RICO‐GRAY 《Ecological Entomology》2010,35(6):754-759
1. We analysed a cacti‐syrphid community focusing on the exploitation of decaying cacti resources by the flies, i.e. if exploitation exhibited a nested topology as a structural pattern, or whether it was temporally random. If availability of cactus resources was predictable during the rainy season, it would then be exploited by a more structured community, or as resource availability would be unpredictable during the dry season, we should expect it to be exploited by a random community. 2. We registered 12 Copestylum species (9 in dry and 11 in rainy season). Four cactus species were recorded per season, three were shared between seasons. 3. The community of Copestylum larvae in the rainy season was not randomly assembled but highly nested, revealing a highly structured pattern of resource use. It exhibited a random organization for the dry season. The high nestedness value obtained for the rainy season suggests that factors along with competition must play a major role in determining community structure. 4. Succession in the cacti‐syrphid community mediated by microorganisms involved in necrosis is an important factor structuring nested subsets. The studied networks were small, which may limit the power of the analysis, and strong conclusions could also be limited. 相似文献
53.
L V Ponomareva M I Iankevich V I Iakovlev L N Aladyshkin V G Krupchak 《Antibiotiki i khimioterapii͡a》1990,35(2):43-46
It was shown that mycelial waste (MW) from manufacture of riboxin and neomycin was useful as an active filler for press compositions and a raw material for fuels. Addition of MW to a polymer press composition, depending on the amount added, provided a 2-10-fold decrease in the time of gel formation in the mixture and hardening of the products as well as a significant decrease in their shrinkage during the hardening. Optimal physicomechanical properties were achieved when the contents of MW and polymer in the press composition were equal. Pyrolysis of dry MW at a temperature of 450-500 degrees C resulted in formation of a product which was not inferior to the known fuels in its physicochemical properties. The low freezing point of the prepared fuel as compared to that of oil fuels allowed one to recommend it as a low-temperature additive to the fuels lowering their freezing points. 相似文献
54.
A. A. Makhrov V. S. Artamonova I. G. Murza A. N. Pashkov M. V. Ponomareva S. I. Reshetnikov O. L. Christoforov 《Russian Journal of Developmental Biology》2018,49(2):117-127
Populations of brown trout in the Mzymta River and its tributaries include anadromous (mainly female) and resident (mainly males) fish. Some resident males in the basin of the Mzymty River attain sexual maturity at the age 1+, and resident females mature at the age 2+ or 3+. The maximum age of resident fish is 4+ in the samples studied. Migrations of anadromous brown trout to the sea occur at the ages 1+, 2+, or 3+. Future spawners spend from 1 to 4 years at feeding grounds in the sea. Smolts of the population are characterized by performing not only spring but also autumn migrations to the sea. One smolt specimen has been detected upstream from the dam in the river where spawners of anadromous brown trout do not migrate; this means that the capability for sea migrations persists long in the population represented only by resident specimens of brown trout. The diversity of life cycles and ecological forms in populations of brown trout is not lower than in populations of brown trout in Northern and Western Europe. The comparison of the data obtained with published data makes it possible to come to the conclusion about the high plasticity of ontogenesis of Black Sea brown trout. 相似文献
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Diatoms of the genus Skeletonema were found in bottle samples of phytoplankton that were collected in Paris Bay (Bosfor-Vostochny Strait, the Sea of Japan) in June–December 2013 at a water temperature of–1.8 to 21.6°C and a salinity of 25.4–33.2‰. Using electron microscopy, we identified the predominant species of the autumn phytoplankton bloom as S. marinoi Sarno et Zingone. This is the first find of the species in the marine waters of Russia. The morphology of S. marinoi is described; further data on its ecology and distribution are provided. 相似文献
59.
E. D. Vasil’eva V. P. Vasil’ev E. N. Ponomareva Yu. A. Lapukhin 《Journal of Ichthyology》2010,50(8):605-617
Results are described of experimental crossing for obtaining of triple hybrids of the Russian sturgeon Acipenser gueldenstaedtii, the great sturgeon A. huso, and the starred sturgeon A. stellatus and of comparative analysis of some quantitative morphological characters in these hybrids, in the progeny of parental species
and of reciprocal hybrids of starred sturgeon and great sturgeon. By most investigated characters, in triple hybrids, the
states of the paternal species (Russian sturgeon) are inherited, by some other characters-of great sturgeon-the state of starred
sturgeon is not inherited. Therefore, on the basis of external appearance, they may be identified as the hybrid of Russian
sturgeon with great sturgeon. The observed segregation by the form of gill rakers into paternal, maternal, or intermediate
variants leads to a conclusion of nonmonogenous inheritance of a wide form and a conical form of gill rakers in sturgeons.
On the whole, the obtained results clearly demonstrate how, due to effects of matrocliny and partocliny, and different combination
of dominant and recessive alleles of the genes determining the diagnostic characters, the hybrid individuals may acquire a
different extent of similarity and differences from the parental species. The investigated triple hybrids are an interesting
example of mutual leveling of divergent traits in the course of combination of different genomes within limits of one closely
related Atlantic group of sturgeons. As a result, a certain averaged habitus is formed which might take place also in case
of formation of polyploidy species in the process of evolution. 相似文献
60.
In every synapse, a large number of proteins interact with other proteins in order to carry out signaling and transmission in the central nervous system. In this study, we used interaction proteomics to identify novel synaptic protein interactions in mouse cortical membranes under native conditions. Using immunoprecipitation, immunoblotting, and mass spectrometry, we identified a number of novel synaptic protein interactions involving soluble N-ethylmaleimide-sensitive factor attachment protein receptors (SNAREs), calcium-activated potassium channel (BKCa) alpha subunits, and dynamin-1. These novel interactions offer valuable insight into the protein-protein interaction network in intact synapses that could advance understanding of vesicle trafficking, release, and recycling.