Development of context training ideas for the organization of industrial training in college

Обоснована целесообразность применения технологии контекстного обучения для производственного обучения студентов колледжа с целью оптимизации формирования их компетенцийThe authors substantiate the advisability of using contextual learning technology for industrial training of college students in order to optimize the formation of their professional competence

Synthesis of the monosubstituted pillar[5]arenes with 1-aminophosphonate fragment

© 2016 Taylor & Francis Group, LLC.The novel monofunctionalized pillar[5]arenes containing α-aminophosphonate fragmentwere synthesized by the Kabachnik-Fields reaction. Besides, a new method for the synthesis of pillar[5]arene containing one phthalimide fragment was proposed

Synthesis of pillar[5]arenes with a PH-containing fragment

© 2017, Pleiades Publishing, Ltd. The reactions of phosphorus(III) chloride and 2-chloro-1,3,2-dioxaphospholane with monohydroxypillar[5]arene afforded for the first time the corresponding PH-phosphonates. It was found that the newly formed P–O(Ar) bond is characterized by considerably reduced reactivity, which was rationalized by essential shielding of the phosphorus atom by the pillar[5] arene macrocycle. The pillar[5]arene scaffold stabilizes the highly reactive P III –Cl fragment, so that the formation of macrocyclic dichlorophosphite can be detected under normal conditions

Synthesis of p-tert-butylthiacalix[4]arene derivatives with 1-aminobis(methylenephosphonic acid) fragments by Moedritzer-Irani reaction

© 2016 Taylor & Francis Group, LLC.Novel tetra-substituted p-tert-butylthicalix[4]arene derivatives with 1-aminobis(methylenephosphonic) acid fragments at the lower rim in 1,3-alternate conformation were synthesized byMoedritzer-Irani reaction with good yields. It was shown that thiacalixarene derivatives containing both amino and hydroxyl groups at the lower rim did not undergo Moedritzer-Irani reaction

HYDRO + JETS (HYDJET++) event generator for Pb+Pb collisions at LHC

The Monte Carlo event generator HYDJET++ is one of the few generators, designed for the calculations of heavy-ion collisions at ultrarelativistic energies, which combine treatment of soft hydro-like processes with the description of jets traversing the hot and dense partonic medium. The model is employed to study the azimuthal anisotropy phenomena, dihadron angular correlations and event-by-event (EbyE) fluctuations of the anisotropic flow in Pb+Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV. The interplay of soft and hard processes describes the violation of the mass hierarchy of meson and baryon elliptic and triangular flows at p_T > 2 GeV/c, the fall-off of the flow harmonics at intermediate transverse momenta, and the worsening of the number-of-constituent-quark (NCQ) scaling of elliptic/triangular flow at LHC compared to RHIC energies. The cross-talk of v_2 and v_3 leads to emergence of higher order harmonics in the model and to appearance of the ridge structure in dihadron angular correlations in a broad pseudorapidity range. HYDJET++ possesses also the dynamical EbyE fluctuations of the anisotropic flow. The model results agree well with the experimental data.Comment: 8 pages, 6 figures, contribution to Proceedings of the Winter Workshop on Nuclear Dynamics 201

Anisotropic flow fluctuations in hydro-inspired freeze-out model for relativistic heavy ion collisions

The LHC data on event-by-event harmonic flow coefficients measured in PbPb collisions at center-of-mass energy 2.76 TeV per nucleon pair are analyzed and interpreted within the HYDJET++ model. To compare the model results with the experimental data the unfolding procedure is employed. The essentially dynamical origin of the flow fluctuations in hydro-inspired freeze-out approach has been established. It is shown that the simple modification of the model via introducing the distribution over spatial anisotropy parameters permits HYDJET++ to reproduce both elliptic and triangular flow fluctuations and related to it eccentricity fluctuations of the initial state at the LHC energy.Comment: 12 pages including 9 figures as EPS-files; prepared using LaTeX package for publication in the European Physical Journal

Monoaminophosphorylated pillar[5]arenes as hosts for alkaneamines

© The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.For the first time, monofunctionalized pillar[5]arenes containing a 1-aminophosphonate fragment have been obtained and characterized. As shown by NMR spectroscopy, the replacement of the amino groups by 1-aminophosphonate units in the macrocycle structure allows switching of “self-assembling-host-guest complexation” properties of the monofunctionalized pillar[5]arenes. Thus, new synthesized aminophosphonated pillar[5]arenes form host-guest complexes with aliphatic amines contrary to monoamine macrocycles that tend to self-assemble

Cyclic peroxides and related initiating systems for radical polymerization of methyl methacrylate

Cyclic peroxides as initiators for the radical polymerization of methyl methacrylate were proposed. The initial rates, initiation rates, and effective activation energies of polymerization initiated by cyclic peroxides and cyclic peroxide-1-pyridyl-2-ferrocene systems were determined. The radical yields to the volume upon the thermal decomposition of cyclic peroxides and their catalytic decomposition in the presence of 1-pyridyl-2-ferrocene were determined. In combination with 1-pyridyl-2-ferrocene cyclic peroxides form efficient initiating systems favoring an increase in the polymerization rate, a decrease in the molecular weights, and an increase in syndiotacticity of the synthesized poly(methyl methacrylate). © 2013 Springer Science+Business Media New York