322 research outputs found
Controlling the topological sector of magnetic solitons in exfoliated CrNbS crystals
We investigate manifestations of topological order in monoaxial helimagnet
CrNbS by performing transport measurements on ultra-thin crystals.
Upon sweeping the magnetic field perpendicularly to the helical axis, crystals
thicker than one helix pitch (48 nm) but much thinner than the magnetic domain
size (1 m) are found to exhibit sharp and hysteretic resistance
jumps. We show that these phenomena originate from transitions between
topological sectors with different number of magnetic solitons. This is
confirmed by measurements on crystals thinner than 48 nm --in which the
topological sector cannot change-- that do not exhibit any jump or hysteresis.
Our results show the ability to deterministically control the topological
sector of finite-size CrNbS and to detect inter-sector transitions
by transport measurements.Comment: 7 pages, 8 figure
Effect of the Frequency of Probiotic Use on the Productivity and Incubation Properties of Eggs of the Meat Production Direction
The use of probiotics Levisel SB Plus and Cellobacterin-T in the amount of 0.50 kg/t of mixed fodder in the diet of young herd replacement of the meat direction during the growing period from 3 to 45 days allowed to get homogeneity by 20.9 and 13.1 % above the analogues of the control group. Probiotic feed additive Levisel SB Plus increased the number of fertilized eggs by 1.96 %, hatchability – by 0.90 %, hatchery waste decreased by 2.7 %, feed costs decreased by 9.6 %. However, the best production results were shown by the group with a similar rate of probiotic Cellobacterin-T introduction, which had these indicators, respectively, of 2.0 %, 1.28, 4.2 and 10.4 %
Phase transition in triglycine sulfate by piezoelectric response force microscopy and dielectric spectroscopy
Influence of spin structures and nesting on Fermi surface and a pseudogap anisotropy in t-t'-U Hubbard model
Influence of two type of spin structures on the form of the Fermi surface
(FS) and a photoemission intensity map is studied for t-t'-U Hubbard model.
Mean field calculations are done for the stripe phase and for the spiral spin
structure. It is shown, that unlike a case of electron doping, the hole-doped
models are unstable with respect to formation of such structures. The pseudogap
anisotropies are different for h- and e- doping. In accordance with ARPES data
for La2SrxCuO4 the stripe phase is characterized by quasi-one-dimensional
segments of FS at k=(\pi,0) and by suppression of spectral weight in diagonal
direction. It is shown that spiral structures display the polarisation
anisotropy: different segments of FS correspond to electros with different spin
polarisations.Comment: 12 pages, 4 figure
Experience of the development of a regional qualification framework for the system of vocational education
© Author(s).The article dwells upon the methodological and technological aspects of the project to develop a framework of qualifications of the Ural region, which concerned with some of the features of the procedure of doing research, as well as the development of diagnostic tools. The work presents the methods of the processing of data collected during the interviews with educational institutions in order to build "an educational qualification net", namely the determination of the adequacy of the choice of the selected descriptors, the correctness of their formulation and the clarification of the contents; the determination of correlating between the importance of assessment of training results according to selected descriptors and the completeness of their formation in educational institutions of different educational levels; the identification of the views of experts on the quality characteristics of training results in educational levels, in accordance with the selected descriptors. The obtained experience in the course of the project implementation, according to the authors, can be useful in conducting similar studies to improve the national qualification systems
(E)-2-(hydroxystyryl)-3-phenylquinazolin-4(3H)-ones: Synthesis, photochemical and luminescent properties
The new (E)-2-(hydroxyarilethenyl)-3-phenylquinazolin-4(3H)-ones with various substituents in phenyl fragment were synthesized. The effect of electron donor and acceptor substituents (±M) in quinazolinones on luminescence intensity and dual emission in 550-650-nm wavelength range was shown. The fact of the reversible photo/thermal E-Z isomerization for several substances was established. The (E)-2-(5-chloro-2-hydroxystyryl)-3-phenylquinazolin-4(3H)-one had shown the best combination of photochemical (E-Z isomerization) and photophysical properties. The (E)-2-(2-hydroxy-5-morpholinostyryl)-3-phenylquinazolin-4(3H)-one had revealed the best ESIPT-luminescence (Φrel = 5.3 %). © Arkat. All Rights Reserved.Russian Foundation for Basic Research, RFBR: 18-03-00112This work was supported by the Russian Foundation for Basic Research (grant 18-03-00112). Analytical studies were carried out using equipment of the Center for Joint Use SSpectroscopy and ?nalysis of Organic Compounds ? at the Postosvky Institute of Organic Synthesis of the Russian Academy of Sciences (Ural Branch)
Microstructure of Complex Silicon-containing Modifier
Various research methods show that the microstructure of the complex siliconcontaining modifier ”Insteel 7” consists of six phases: TiFeSi2, Ca1
Gene-directed mutagenesis in bacteriophage T7 provided by polyalkylating RNAs complementary to selected DNA sites.
Image "I" corporal as a necessary component in the organization of educational process of shaolin school of single combats
In article are considered a role of improving and educational system of UShU in knowledge of the egoism that according to Shaolin schools, expands possibilities of the person, promoting strengthening of its spirit, a corporality, providing to the personality harmonious and frictionless interaction with the nature with society and by itselfВ статье рассматриваются роль оздоровительно-образовательной системы УШУ в познании своей самости, что по данным шаолиньских школ, расширяет возможности человека, способствуя укреплению его духа, телесности, обеспечивая личности гармоничное и бесконфликтное взаимодействие с природой с социумом и самим собо
- …