1,549 research outputs found
GEOECOLOGICAL ANALYSIS OF THE NW BLACK SEA SHELF BASED ON THE STUDY OF OSTRACODS
No full textBlack Sea-Mediterranean corridor during the last 30 ky: sea level change and human adaptation (2005-2009) joint meeting and field trip, IGCP 521 (2007), Gelendzhik; Kerch
Extended abstracts, 8-17 Sept., 2007 / Black Sea-Mediterranean corridor during the last 30 ky: sea level change and human adaptation (2005-2009) joint meeting and field trip, IGCP 521 (2007), Gelendzhik; Kerch ; Dating Caspian Sea level change (2003-2007),joint meeting and field trip IGCP 481 (2007); Gelendzhik; Kerch, RAS, P.P. Shirshov Institute of Oceanology . – Moscow : Rosselkhozakademiya Printing House, 2007 . – XXII, 178 p. : Fig. – (UNESCO-IUGS-IGCP-INQUA) .When undertaking geoecological monitoring, one of the important aspects is the choice of a sensitive bioindicator system, which responds to the conditions of accumulation of toxic substances in bottom sediments
(Kravchuk and Kravchuk 2000). Biological components comprising the ecological biotopes of the shelf region are controlled by the physico-chemical parameters and the concentration of a substance within sediments. The assessment of the situation and the general knowledge of the active processes can be obtained by investigating the changes in species content of various groups of living organisms. The pollution of marine environments by organic byproducts causes noticeable influence on the ostracod communities (Kravtsov et al. 2007)
The Use of Cloud Services for Learning Foreign Language (English)
No full textGnedkova, O. The Use of Cloud Services for Learning Foreign Language (English) [Електрон.ресурс] / О. Gnedkova, Н. Kravtsov // Proceedings of the 12th International Conference on ICT on Education, Research and Industrial Applications: Integration, Harmonization and Knowledge Transfer. – Kyiv, Ukraine, June 21- 24, 2016/ Ed. by Ermolayev, V. et al. (eds.). – CEUR Workshop Proceedings. – 2016. – Vol.1614. – P. 620 – 631.Research goals: determine particularities of using cloud services in English communicative competence forming process and develop the model of distance learning system (DLS) and cloud services interaction that improves the quality of the learning process. Research objectives: to identify, describe and
develop methodological features of the model of distance learning system and cloud services interaction; consider on the examples the methods of use cloud services in DLS in foreign language training, aimed at English communicative competence forming process of students; experimentally investigate the level of using of cloud services in distance learning and identify ways of improving its use. Object of research: methodical system of foreign language students’ training of language faculties in high institutions. Subject of research: methodological model of the model of distance learning system and cloud services interaction in English communicative competence forming process. Research methods used: review and analysis of scientific publications, psychological, educational and instructional materials, modeling of complex systems, questionnaires, conducting pedagogical experiment. Results of research: The
model of distance learning system and cloud services interaction was developed and the methodological particularities of this interaction are defined. Methods of using cloud services on the example of the distance course "Practical English Course Upper Intermediate" describing the methods of doing the tasks in English communicative competence forming process of language faculties were considered. As a result of experiment it was found there is a low level of use of cloud technologies in distance learning is a consequence of a lack of awareness of teachers in the possibilities of its use
A missing high-spin molecule in the family of cyanido-bridged heptanuclear heterometal complexes, [(LCuII)6FeIII(CN)6]3+, and its CoIII and CrIII analogues, accompanied in the crystal by a novel octameric water cluster
No full textThree isostructural cyanido-bridged heptanuclear complexes, [{Cu II(saldmen)(H2O)}6{MIII(CN) 6}](ClO4)3·8H2O (M = Fe III2; CoIII, 3; CrIII4), have been obtained by reacting the dinuclear copper(ii) complex, [Cu2(saldmen) 2(μ-H2O)(H2O)2](ClO 4)2·2H2O 1, with K3[Co(CN) 6], K4[Fe(CN)6], and K3[Cr(CN) 6], respectively (Hsaldmen is the Schiff base resulting from the condensation of salicylaldehyde with N,N-dimethylethylenediamine). A unique octameric water cluster, with bicyclo[2,2,2]octane-like structure, is sandwiched between the heptanuclear cations in 2, 3 and 4. The cryomagnetic investigations of compounds 2 and 4 reveal ferromagnetic couplings of the central Fe III or CrIII ions with the CuII ions (J CuFe = +0.87 cm-1, JCuCr = +30.4 cm -1). The intramolecular Cu⋯Cu exchange interaction in 3, across the diamagnetic cobalt(iii) ion, is -0.3 cm-1. The solid-state 1H-NMR spectra of compounds 2 and 3 have been investigated
Crystal structure and physical properties of YbCuZnSb2
No full textThe crystal structure of YbCuZnSb2 has been determined for the first time by single-crystal X-ray diffraction analysis. It is shown that YbCuZnSb2 has a CaAl2Si2-type structure, space group is P-3m1, with the following unit cell parameters: a = 4.4394(1) and c = 7.4139(3) . Magnetic susceptibility measurements performed in the temperature range from 2 to 300 K show that ytterbium ions are found in a nonmagnetic 4f (14) ground state (Yb2+). YbCuZnSb2 exhibits p-type conductivity. The temperature dependence of the resistivity has a metallic character. The variations in the Cu/Zn ratio in the synthesized material occur without any disturbance of the structural type. This fact may confirm the existence of a solid solution between the YbZn2Sb2 and YbCuZnSb2 compounds
Laser performance of Er-doped potassium double tungstate epitaxial layers
No full textLaser operation of Er-doped epitaxial layer of monoclinic double tungstate composition grown onto undoped KYW substrate is demonstrated for the first time. Maximum output power of 16 mW with slope efficiency of 64% is achieved at 1606 nm under direct in-band pumping by a diode-pump Er,Yb-laser at 1522 nm.</p
(Table 4) Fe, Mn, P, As, Cd, and Pb concentrations in the silt-pelitic and pelitic oozes of Core Kas
No full textAccording to the Russian decimal grain size nomenclature the pelitic size fraction is one <0.01 mm
Effectiveness evaluation of two volumizing hyaluronic acid dermal fillers in a controlled, randomized, double-blind, split-face clinical study
No full textMartina Kerscher,1 Karla Agsten,2 Maria Kravtsov,3 Welf Prager4 1Department of Cosmetic Science, University of Hamburg, 2SCIderm GmbH, Hamburg, Germany; 3Anteis S.A., Geneva, Switzerland; 4Prager & Partner Dermatologische Praxis, Hamburg, Germany Background: Enhancement of the midface can be achieved with volumizing hyaluronic acid (HA) fillers.Objective: The objective of this study was to compare the safety and effectiveness of Cohesive Polydensified Matrix® 26 mg/mL HA gel (CPM-26) and Vycross® 20 mg/ml HA gel (VYC-20) in a controlled, randomized, evaluator-blind, split-face clinical study.Patients and methods: Subjects with moderate-to-severe malar volume loss on the Merz Aesthetics Scale (MAS) received CPM-26 on one side and VYC-20 on the contralateral side of the face. Effectiveness assessments were performed by blinded evaluators including photographic and live MAS ratings and live Global Aesthetic Improvement Scale (GAIS) ratings. Calculations of anatomical volume variations at month 3 (M3), month 6 (M6), month 12 (M12) and month 18 (M18) were also performed.Results: Non-inferiority of CPM-26 versus VYC-20 was demonstrated at M3 (primary end point) based on MAS. GAIS rating showed that significantly more subjects had better improvement with CPM-26 than with VYC-20 at month 1, M3, M12 and M18 (p=0.0032, p=0.0074, p=0.0384 and p=0.0110, respectively). Standardized evaluation of volume variations from baseline to M3, M12 and M18 showed that CPM-26 created more volume augmentation at all time points, and the difference was significant at M3.Conclusion: CPM-26 was non-inferior to VYC-20 based on MAS ratings at M3 and demonstrated a favorable safety and effectiveness profile for midfacial volume enhancement with results lasting up to M18. Keywords: cohesive polydensified matrix, hyaluronic acid fillers, Belotero® Volume, Modélis® SHAPE, Juvéderm® VOLUMA®, volumizin
Имя из энциклопедии «Книга» (памяти Г.А. Кравцова)
No full textThe article is devoted to outstanding artist Gershon A. Kravtsov, a pupil and associate of V. Favorsky, the creator of graphic art school of new time. G. Kravtsov entered the history of book graphics and exlibris of the last century as a celebrated pioneer, a creator of special style in the art of wood engraving. The author pinpoints the main stages of the creative way of the great master and his rich public activities, describes the significant contribution of the artist to gold fund of exlibris art of the 20th century.Статья посвящена выдающемуся художнику Гершону Абрамовичу Кравцову, ученику и соратнику создателя школы искусства графики нового времени В.А. Фаворского. Г.А. Кравцов вошел в историю книжной графики и экслибриса прошлого века как крупнейший новатор, творец особого стиля в искусстве гравюры на дереве. В статье раскрываются основные вехи творческого пути большого мастера и его яркой общественной деятельности, рассказывается о значительном вкладе художника в золотой фонд искусства книжного знака ХХ века
Creativity in Context of Deviant Behavior
No full textIn this article author discussing the problem of creativity in context of studying of deviant behavior. The author shows the results of several research of criminal that are underage and normal teenagers creativity abilities. The results of this research appears to be paradoxical, pointing non-linear structure of creativity abilities. By the other words it could be not definitely assert, that low result by creativity tests means low creativity abilities of the respondents with deviant behavior. That is, adolescents with deviant behavior, doing poorly with creativity tests, show very high creative abilities, for example, in the social sphere. According author opinion one of the possible way of overcoming that difficulties is L.S. Vygotsky’s cultural-historical approach. Studying of play activity and imagination development shows, that it is quality differences between deviant and normal persons. The author refers to them object level of development of imagination and stuck on the director's game, low level of imagination and lack of formation of the subject of imagination and play activity
The PolFusion Experiment: Measurement of the d-d-Fusion Spin-Dependence
No full textA double-polarized dd-fusion experiment is under preparation at PNPI,
Gatchina. The experimental program includes themeasurements of the asymmetry in
the differential cross section of the reactions d_pol + d_pol → 3He + n and d_pol + d_pol → t + p. The spin-correlation coefficients Cz,z and Czz,zz will be measured to determine
the quintet-state suppression factors for both reactions, for which quite different
theoretical predictions were made and which are very important for the design of
future neutron-lean fusion reactors. The total cross sectionmodification for polarized
d–d fusion will also be investigated. An increase by a factor of 1.5 was already
deduced for the d + 3He and the d + t reactions. The experimental setup and the
future upgrade plans are described
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