The most important stage of keeping seals in captivity conditions is training of pups which have finished breastfeeding to feed on solid food (fattening). On expedition in 2016 the Murmansk Marine ...Biological Institute (MMBI) staff captured five pups of the Atlantic gray seal (Halichoerus grypus grypus) for the purpose of carrying out experimental studies. The caught animals were transported to the MMBI aqua complex in Gadzhievo. Three of the five captured animals began to feed on thawed fish without additional measures. A forced battening method was successfully applied for the two remaining animals. Additions made to the original technique of forced battening have proved its efficiency.
The design model of reinforced crushed stone layer calculating as a multilayer plate on an elastic base using the technical theory of bending and the Bubnov-Galerkin method is proposed, which makes ...it possible to theoretically calculate and justify the effectiveness of using various types of geosynthetic materials for reinforcing pavement bases made of granular materials. The model is based on the hypothesis that the reinforced granular layer is deformed like a plate on an elastic base because of the mechanical connection with the geogrid. The calculating model is a multilayer plate consisting of an arbitrary number of solid homogeneous rigidly interconnected layers. The possibility of using this model for calculation of reinforced granular pavement base is confirmed experimentally. The results of the stamp tests showed satisfactory agreement with the results of theoretical studies. The discrepancy did not exceed 15 %.
Ethyl 2-(
N
-morpholinyl)cyclopent-1-ene-1-carboxylate reacted smoothly with cyanothioacetamide to give morpholinium 4-cyano-1-oxo-2,5,6,7-tetrahydro-1
H
-cyclopenta
c
pyridine-3-thiolate; the former ...when treated with
N
-benzyl-α-chloroacetamide gave either a
S
-alkyl derivative or cyclopenta
d
thieno2,3-
b
pyridine, depending on the reaction conditions. Under
Mannich-
type aminomethylation with primary amines and formaldehyde the above thiolate afforded derivatives of the previously unknown heterocyclic system, cyclopenta
g
pyrido2,1-
b
1,3,5thiadiazine in 81–90% yields.
•The results of multiphysics simulations for TS support structure in consequent design iterations are presented and discussed.•The close to final design of front diagnostic rack developed on the ...basis of simulation results and suitable to sustain all main ITER loads is presented.•The distortion of mirrors surfaces is analyzed and possible problems are indicated.•The new design of the mirror mounting system is proposed.
The support structure for divertor Thomson scattering equipment – the front diagnostic rack, which actually plays plugging role of the divertor port, should be designed to sustain the severe ITER conditions. Meeting the requirements of multifield analyses (which often contradict each other) results in an iterative design process. A number of design variants based on engineering analyses results were developed in 2011–2012. We study here the close to the final design of the diagnostic rack for consistency to electromagnetic, thermal and seismic loads. The specific ITER environment imposes a restricted list of materials and requires a careful design of optical elements to accommodate their thermal expansion. Special attention is focused on the mirror deformed shape under operating loading conditions and its effect on optical system performance, which is vital for all optical systems with mirrors specially designed for the ITER.
Upon treatment with H2O2/KOH in EtOH or with Na2CO3/H2O2 in acetone, cycloalkylidene‐α‐(4‐arylthiazol‐2‐yl)acetonitriles afforded 2‐(4‐arylthiazol‐2‐yl)‐1‐oxaspiro2.5octane‐2‐carboxamides and ...2‐(4‐arylthiazol‐2‐yl)‐1‐oxaspiro2.4heptane‐2‐carboxamides in excellent yields (76–100%). J. Heterocyclic Chem., 2011.
Morpholinium 3-cyano-4-methyl-6-oxo-1,6-dihydropyridine-2-thiolate upon treatment with primary amines and a formaldehyde excess under mild conditions produces
bis
(pyrido2,1-
b
...1,3,5thiadiazin-7-yl)methane derivatives in good yields (67–87%).
The history of human populations occupying the plains and mountain ridges separating Europe from Asia has been eventful, as these natural obstacles were crossed westward by multiple waves of Turkic ...and Uralic-speaking migrants as well as eastward by Europeans. Unfortunately, the material records of history of this region are not dense enough to reconstruct details of population history. These considerations stimulate growing interest to obtain a genetic picture of the demographic history of migrations and admixture in Northern Eurasia.
We genotyped and analyzed 1076 individuals from 30 populations with geographical coverage spanning from Baltic Sea to Baikal Lake. Our dense sampling allowed us to describe in detail the population structure, provide insight into genomic history of numerous European and Asian populations, and significantly increase quantity of genetic data available for modern populations in region of North Eurasia. Our study doubles the amount of genome-wide profiles available for this region. We detected unusually high amount of shared identical-by-descent (IBD) genomic segments between several Siberian populations, such as Khanty and Ket, providing evidence of genetic relatedness across vast geographic distances and between speakers of different language families. Additionally, we observed excessive IBD sharing between Khanty and Bashkir, a group of Turkic speakers from Southern Urals region. While adding some weight to the "Finno-Ugric" origin of Bashkir, our studies highlighted that the Bashkir genepool lacks the main "core", being a multi-layered amalgamation of Turkic, Ugric, Finnish and Indo-European contributions, which points at intricacy of genetic interface between Turkic and Uralic populations. Comparison of the genetic structure of Siberian ethnicities and the geography of the region they inhabit point at existence of the "Great Siberian Vortex" directing genetic exchanges in populations across the Siberian part of Asia. Slavic speakers of Eastern Europe are, in general, very similar in their genetic composition. Ukrainians, Belarusians and Russians have almost identical proportions of Caucasus and Northern European components and have virtually no Asian influence. We capitalized on wide geographic span of our sampling to address intriguing question about the place of origin of Russian Starovers, an enigmatic Eastern Orthodox Old Believers religious group relocated to Siberia in seventeenth century. A comparative reAdmix analysis, complemented by IBD sharing, placed their roots in the region of the Northern European Plain, occupied by North Russians and Finno-Ugric Komi and Karelian people. Russians from Novosibirsk and Russian Starover exhibit ancestral proportions close to that of European Eastern Slavs, however, they also include between five to 10 % of Central Siberian ancestry, not present at this level in their European counterparts.
Our project has patched the hole in the genetic map of Eurasia: we demonstrated complexity of genetic structure of Northern Eurasians, existence of East-West and North-South genetic gradients, and assessed different inputs of ancient populations into modern populations.
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