Computer simulation of thin nickel films on single-layer graphene

The energy, mechanical, and transport properties of nickel films on a single-layer graphene sheet in the temperature range 300 K ≤ T ≤ 3300 K have been investigated using the molecular dynamics method. The stresses generated in the plane of the metallic film are significantly enhanced upon deposition of another nickel film on the reverse side of the graphene sheet. In this case, the self-diffusion coefficient in the film plane above 1800 K, in contrast, decreases. An appreciable temperature elongation per unit length of the film also occurs above 1800 K and dominates in the "zigzag" direction of the graphene sheet. The vibrational spectra of the nickel films on single-layer graphene for horizontal and vertical displacements of the Ni atoms have very different shapes. © 2013 Pleiades Publishing, Ltd

Computer study of the physical properties of a copper film on a heated graphene surface

The structural, kinetic, and mechanical properties of a copper film deposited on single-layer and two-layer graphenes have been studied in a molecular-dynamics model in the temperature range 300 K ≤ T ≤ 3300 K. The film sizes are reduced in the "zigzag" direction more slowly than in the "armchair" direction. The differences have been found to appear in the behavior of copper atoms on single-layer and two-layer graphenes with increasing temperature. Copper atoms on the two-layer graphene have higher horizontal mobility over entire temperature range. However, Cu atoms on the single-layer graphene become more mobile in the vertical direction beginning from a temperature of ~1500 K. The stress tensor components of the copper film characterizing the action of forces on the horizontal areas have a sharp extremum at T = 1800 K in the case of the single-layer graphene and are characterized by quite smooth behavior in the case of the two-layer graphene. © 2013 Pleiades Publishing, Ltd

Dissolved silicon and nitrogen in glacial rivers and water of Blago bay (Russian Arctic, Novaya Zemlya): origin, variability and spreading

Hydrochemical studies of watercourses and the water area of Blagopoluchia bay (Novaya Zemlya, Arctic, Russia) have been carried out. The concentrations of nutrients in rivers and streams are higher than those in the water area of Blagopoluchia bay. It is shown that the concentration of silicon in constantly flowing rivers is 1–13 μM, the concentration of NO3 — 0.5–8, for small and temporary streams these values are higher and are in the range of 18–46 μM Si, 1–11 μM NO3– . The influence of streams and rivers flowing into Blagopoluchia Bay on the water area of the bay is local and extends to 1 km from the mouth, and does not influence the Kara Sea nutrient content.Hydrochemical studies of watercourses and the water area of Blagopoluchia bay (Novaya Zemlya, Arctic, Russia) have been carried out. The concentrations of nutrients in rivers and streams are higher than those in the water area of Blagopoluchia bay. It is shown that the concentration of silicon in constantly flowing rivers is 1–13 μM, the concentration of NO3 — 0.5–8, for small and temporary streams these values are higher and are in the range of 18–46 μM Si, 1–11 μM NO3– . The influence of streams and rivers flowing into Blagopoluchia Bay on the water area of the bay is local and extends to 1 km from the mouth, and does not influence the Kara Sea nutrient content

Integration experience of Belgorod State National Research University into innovation system of Belgorod Oblast and its leading regional industrial mining and metallurgical cluster

This article gives the results of development of Belgorod State National Research University as leading Russian university, with its integration into innovation system of Belgorod Oblast by expansion of the range of education and research services, and by realization of innovative projects for the region. Belgorod State University started to establish a university world-level self-developing industrial-financial complex. There is considered the efficient interaction of the University with mining enterprises of Belgorod Oblast, which allows to unlock the innovative potential of the participants and significantly promotes the social economic and commercial development of the regionyesBelgorod State Universit

Self-preserving dispositions and strategies of modern Russian youth

The paper covers the results of a Russian study on the determination of self-preserving dispositions and strategies of modern Russian youth via comparative qualitative research methods. As a result of the study, the problem field of control over the self-preserving behaviour of young people was determined, at the perimeter of which there are problems related to the lack of work to prevent diseases among young people, uncontrolled smoking and the use of alcohol by young peopl

State regulation features of university integration into national innovative system in the light of "triple helix" modern concept

The study is devoted to state regulation features research of university integration of into national innovative system in the light of “triple helix” modern concept developed by it’s kovit’s leidesdorf describing development of innovative systems through dynamics of state, business and universitiesyesBelgorod State Universit

Sociocultural aspect of realization of civil control in modern Russian society

The backwardness of civil control in modern Russia is connected with a complex of the reasons of sociocultural character, including with specifics of the Russian traditions of public participation. It is proved that only collective forms of civil control relying on mobilization and use of the social capital of local communities can be the most effective in Russi

Current sheath studies by magnetic probes on plasma focus PF-400

The time resolved studies of the current sheath formation in a plasma focus discharge of Filippov type with energy stored in capacitors 60 kJ and maximum current 0.9 MA are presented. The current data received by two magnetic probes placed at radii 15 cm and 20 cm were compared with the total current detected by Rogovsky loop. It was found out in discharges with low neutron yield the formation of the extra current sheathes following one after another in 1-th, 2-th and even 3-th half-period of discharge. The single current sheath was observed in the discharges with the high neutron yield. The absolute current measurements showed that the whole discharge current goes throw paraxial area r < 15 cm during the phase of radial implosion, but at the instant of the peculiarity on the current derivative it is no more then half of value of total current. The value of the pinch current remains under the question.Проведено дослідження струмової оболонки плазмового фокуса філіпповського типу з енергетикою 60 кДж та максимальним струмом 0.9 МА. В експерименті порівнювались одночасні покази повного струму розряду від пояса Роговського й струмів, які реєструються двома магнітними зондами всередині приосьової області R < 20 см й R < 15 см. Спостережено наявність других й третіх струмових оболонок, наступних за першою, у пострілах з низьким нейтронним виходом. За умови нормального виходу існує тільки одна струмова оболонка. Абсолютні струмові виміри показали, що під час проходження зондів струмовою оболонкою загальний струм розряду співпадає зі струмом, що протікає у ній, але в момент особливості його величина усередині R<15см у 2-3 рази менше за повний струм за період усіх пострілів. Спостережені вихрові тороїд альні струми в остаточному газі, який оточує пінч.Проведены исследования токовой оболочки плазменного фокуса филипповского типа с энергетикой 60 кДж и максимальным током 0.9 МА. В эксперименте сравнивались одновременные показания полного тока разряда с пояса Роговского и токов, регистрируемых двумя магнитными зондами внутри приосевой области R < 20 см и R < 15 см. Обнаружено существование вторых и третьих токовых оболочек, следующих за первой, в выстрелах с низким нейтронным выходом. При нормальном выходе существует только одна токовая оболочка. Абсолютные токовые измерения показали, что во время прохождения зондов токовой оболочкой полный ток разряда совпадает с током, текущим в ней, но в момент особенности его значение внутри R<15см в 2-3раза меньше полного тока во всех выстрелах. Обнаружены вихревые тороидальные токи в остаточном газе, окружающем пинч