Materials Literature
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The optically active monomer is prepared to synthesize the target polymer which contains naphthopyran and its photochromic properties and kinetics are investigated as well. Its photochromic property was studied using UV–vis absorption spectroscopy. When we stop measuring of the UV light, the decolorization of the samp…
X-ray studies in conjunction with the method of recoil nuclei and electron microscopy of irradiated plates polycrystalline Cu by nanosecond high power density proton beams (E = 120 keV; I = 80 A/cm 2 , t = 50 ns) showed nano block nature of the formation of structure in the surface layer target and condensed-formed fi…
The study presents SFR transient performance for ULOF events initiated by pump trip and pump seizure with simultaneous failure of all shutdown systems in both cases. The most severe cases leading to the pin cladding rupture and possible sodium boiling are demonstrated. The impact of various features on SFR inherent sa…
Revealing the emergence and the dynamics of collective excitations in complex matter is a subject of pivotal importance, as it provides insight into the strength and spatial distribution of interactions and correlations. At the same time, collectivity lies at the origin of several cooperative phenomena in many-body sy…
This paper presents the feasibility of removal of Basic dye (Congo Red) from aqueous solutions by using a low cost PAC-MnO 2 -NC. Batch adsorption experiments were carried out as a function of pH, contact time, initial concentration of the adsorbate, adsorbent dosage and temperature. Pseudo first order, Pseudo second…
Background: Substantial progress has been recently achieved that direct lineage reprogramming induced by small molecule compounds was possible either in vitro or in vivo, which provided a promising cellular strategy for regenerative therapy.
High quality single crystal SiC films were prepared by carbonization of polyimide Langmuir-Blodgett films on Si substrate. The films formed after annealing of the polyimide films at 1000°C, 1100°C, 1200°C were studied by Fourier transform-infrared (FTIR) spectroscopy, X-ray diffraction (XRD), Raman spectroscopy, trans…
The issues of specialists training in the field of nuclear materials safe management for the countries, who have taken a way of nuclear power development are analyzed. Arguments in justification of a need of these specialists training for the new-comers are adduced. The general characteristic of the reference MS progr…
Nuclear safety of RBMK storage pool of spent fuel during of the maximum design earthquake is evaluated. The lower ends of the fuel assemblies are not fixed and they can deviate from the vertical position. The seismic action may be one of the reasons for such deviations. 3D model of fuel assemblies movements caused by…
According to the most conservative estimates, by the middle of the XXI century in the world energy consumption will double. This will be a consequence of the global economic development, population growth and other geopolitical and economic factors. Energy consumption in the world is growing much faster than its produ…
Andy Hor opened a general discussion of the paper by Wenjing Tian: You have two types of crystal which are very interesting, and you related their crystal shapes to the nature of the intermolecular forces. Do you have any solid evidence that could support such a relationship, or this is purely
Within the framework of research in possibility and prospects of power density equalization in boiling water reactors (as exemplified by WB-50) a work was undertaken to improve prior computational model of the WB-50 reactor implemented in MCU-RR software. Analysis of prior works showed that critical state calculations…
Influence of KI salt on the spectral-luminescent properties of polymer films of P3HT has been investigated in this work.Addition of KI doesn't lead to significant changes in optical density of the polymer films, but significantly changes the intensity and lifetime of the luminescence of P3HT.Adding KI reduces the life…
Diamond-like carbon (DLC) and amorphous carbon films are very promising type of semiconductor materials. Depending on the hybridization sp 2 /sp 3 ratio, the material's band gap varies between 0.8 and 3 eV. Moreover carbon films possess different interesting for practice properties: comparable to the Silicon, Diamond…
The mathematical model of the electromagnetic wave reflection with p -polarization from the non-sharp boundary between two transparent media is built and studied. The feature of the model consisted in the fact that the thickness of the transition layer was much less than the electromagnetic wave length. The analytical…
Fast neutron intensity influence on reactor materials radiation damage is a critically important question in the problem of the correct use of the accelerated irradiation tests data for substantiation of the materials workability in real irradiation conditions that is low neutron intensity. Investigations of the fast…
Confined etchant layer technique (CELT) is an effective electrochemical etching method for micro-machining, which can be used to replicate complex three-dimensional microstructures and implement rough surface smooth processing. Through the coupling between electrochemically induced chemical etching processes and mecha…
The frequency dependences of the magnetic permeability of textured composite based on Ba 3 Co 2,4 Fe 23,2 O 41 ferrite are given. The magnetic permeability spectra were obtained by coaxial method in the frequency range 0.01–18 GHz. The expert judgement on the spectra was made by using Cramers – Kronig relations. It wa…
The interest in two-dimensional materials and materials physics has grown dramatically over the past decade. The family of two-dimensional materials, which includes graphene, transition metal dichalcogenides, phosphorene, hexagonal boron nitride, etc., can be fabricated into atomically thin films since the intralayer…
X-ray and gamma-quanta irradiation of radiation-resistant quartz materials including natural and synthetic quartz crystals and high-purity quartzite causes the luminescence in the ultraviolet range (365 nm), thermally stimulated luminescence and radiofrequency electromagnetic emission. Preliminary radiation and therma…