Search Results - "Ratnikov, V. V."

Late Pleistocene Herpetofauna from Oblazova Cave (Polish Carpathians): Additional Collection by Ratnikov, V. Yu, Shiyan, N. A.

“…In the locality of Oblazowa Cave (Polish Carpathians), in addition to the remains of ancient man, mammals, birds, and mollusks, the remains of cold-blooded…”
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High-Output-Power Ultraviolet Light Source from Quasi-2D GaN Quantum Structure by Rong, Xin, Wang, Xinqiang, Ivanov, Sergey V., Jiang, Xinhe, Chen, Guang, Wang, Ping, Wang, Weiying, He, Chenguang, Wang, Tao, Schulz, Tobias, Albrecht, Martin, Jmerik, Valentin N., Toropov, Alexey A., Ratnikov, Viacheslav V., Kozlovsky, Vladimir I., Martovitsky, Victor P., Jin, Peng, Xu, Fujun, Yang, Xuelin, Qin, Zhixin, Ge, Weikun, Shi, Junjie, Shen, Bo

“…Quasi‐2D GaN layers inserted in an AlGaN matrix are proposed as a novel active region to develop a high‐output‐power UV light source. Such a structure is…”
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Comparison of Characteristics of Thin PZT Films on Si-on-Sapphire and Si Substrates by Delimova, L. A., Zaitseva, N. V., Ratnikov, V. V., Yuferev, V. S., Seregin, D. S., Vorotilov, K. A., Sigov, A. S.

“…The properties of ferroelectric sol–gel PZT films deposited on a silicon-on-sapphire (SOS) substrate are compared with those of PZT films formed on a Si…”
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Phase Diagram of Electron–Hole Liquid in Monolayer Heterostructures Based on Transition Metal Dichalcogenides by Pekh, P. L., Ratnikov, P. V., Silin, A. P.

“…The interest in monomolecular layers of transition metal dichalcogenides (TMDs), which has been shown in recent years, is due to their peculiar electronic and…”
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Structural Characterization of a Short-Period Superlattice Based on the CdF2/CaF2/Si(111) Heterostructure by Transmission Electron Microscopy and X-Ray Diffractometry by Sorokin, L. M., Kyutt, R. N., Ratnikov, V. V., Kalmykov, A. E.

“…A detailed study of the structure of a short-period superlattice based on alternating layers of cadmium and calcium fluorides grown by molecular beam epitaxy…”
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Control of threading dislocation density at the initial growth stage of AlN on c-sapphire in plasma-assisted MBE by Nechaev, D.V., Aseev, P.A., Jmerik, V.N., Brunkov, P.N., Kuznetsova, Y.V., Sitnikova, A.A., Ratnikov, V.V., Ivanov, S.V.

“…Crystalline properties of (1–2)-μm-thick AlN buffer layers grown by plasma-assisted molecular-beam epitaxy (PA MBE) on c-Al2O3 substrates with different AlN…”
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Structural and optical properties of PA MBE AlGaN quantum well heterostructures grown on c-Al2O3 by using flux- and temperature-modulated techniques by Jmerik, Valentin N., Nechaev, Dmitrii V., Rouvimov, Sergey, Ratnikov, Valentin V., Kop'ev, Peter S., Rzheutski, Mikolai V., Lutsenko, Eugenii V., Yablonskii, Gennadii P., Aljohenii, Maher, Aljerwii, Abdulaziz, Alyamani, Ahmed, Ivanov, Sergey V.

“…AlGaN-based quantum well (QW) heterostructures grown by plasma-assisted molecular beam epitaxy on c-Al2O3 substrates have been studied. The high-temperature…”
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An Increase of Threading Dislocations Filtering Efficiency in Al2O3 Templates with Faceted Surface Morphology During a Growth by Molecular Beam Epitaxy by Myasoedov, A. V., Nechaev, D. V., Ratnikov, V. V., Kalmykov, A. E., Sorokin, L. M., Jmerik, V. N.

“…We present the results of a transmission electron microscopy and X-ray diffractometry investigation of AlN/ c -Al 2 O 3 templates with GaN ultrathin insertions…”
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Decreasing Density of Grown-in Dislocations in AlN/c-Sapphire Templates Grown by Plasma-Activated Molecular Beam Epitaxy by Ratnikov, V. V., Nechaev, D. V., Myasoedov, A. V., Koshelev, O. A., Zhmerik, V. N.

“…AlN/c-sapphire templates grown by plasma-activated molecular beam epitaxy have been studied using multicrystal X-ray diffractometry and a multi-beam optical…”
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Computed Tomography Imaging of Degenerative Disease in the Lumbar Spine by Malakhanov, V., Seliverstov, P., Lubashev, Ya, Ratnikov, V.

“…The degenerative spinal lesions are one of the most frequent causes of lumbar pain syndrome. Diagnosing them is difficult due to poor correlation between…”
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X-ray diffraction study of strain and defect structure of nonpolar a-plane GaN-layers grown on r-plane sapphire by Kyutt, R. N., Shcheglov, M. P., Ratnikov, V. V., Kalmykov, A. E.

“…Structural state of nonpolar a‐plane GaN layers grown by MOVPE on r‐plane sapphire is investigated by X‐ray diffraction method. Interplanar spacings were…”
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Effect of the Sapphire-Nitridation Level and Nucleation-Layer Enrichment with Aluminum on the Structural Properties of AlN Layers by Malin, T. V., Milakhin, D. S., Mansurov, V. G., Galitsyn, Yu. G., Kozhuhov, A. S., Ratnikov, V. V., Smirnov, A. N., Davydov, V. Yu, Zhuravlev, K. S.

“…The effect of atomic aluminum deposited onto sapphire substrates with different nitridation levels on the quality of AlN layers grown by ammonia molecular-beam…”
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Change in the Character of Biaxial Stresses with an Increase in x from 0 to 0.7 in Al x Ga1 – x N:Si Layers Obtained by Ammonia Molecular Beam Epitaxy by Ratnikov, V V, Sheglov, M P, B. Ya. Ber, D. Yu. Kazantsev, Osinnykh, I V, Malin, T V, Zhuravlev, K S

“…The deformation mode and defect structure of AlxGa1 – xN:Si epitaxial layers (x = 0–0.7) grown by molecular beam epitaxy and doped with Si under a constant…”
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Spontaneous and stimulated emission in the mid-ultraviolet range of quantum-well heterostructures based on AlGaN compounds grown by molecular beam epitaxy on c-sapphire substrates by Lutsenko, E. V., Rzheutskii, N. V., Pavlovskii, V. N., Yablonskii, G. P., Nechaev, D. V., Sitnikova, A. A., Ratnikov, V. V., Kuznetsova, Ya. V., Zhmerik, V. N., Ivanov, S. V.

“…This paper reports on the results of investigations of the spontaneous and stimulated luminescence in AlGaN heterostructures with a single quantum well and a…”
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New molecular complex of ammonium glycyrrhizate with rutin by L. A. Yakovishin, V. D. Ratnikov, P. I. Bazhan, G. P. Zaitsev

“…A new 1:1 molecular complex of triterpene glycoside ammonium glycyrrhizate (GC) with flavonoid glycoside rutin (Rut) was obtained in aqueous ethanol. The…”
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Preemptive Analgesia with Nonsteroidal Anti-Inflammatory Drugs in the Perioperative Period by Danilov, M. S., Simutis, I. S., Salygina, D. S., Polovtsev, E. G., Syrovatsky, A. A., Ratnikov, V. A., Bogatikov, A. A., Karelov, A. E.

“…Objective. A comparative assessment of the efficacy and safety of the preemptive use of ibuprofen and ketoprofen in patients undergoing elective surgery under…”
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Test Equipment for SHS processes: Safety and standardization by Ratnikov, V. I., Borovinskaya, I. P., Prokudina, V. K.

“…The test equipment for main operations of self-propagating high-temperature synthesis (SHS) processes (charge mixture, compaction, and synthesis) is…”
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On the Dispersion Relation of Plasmons in a Gapless-Graphene-Based Superlattice with Alternating Fermi Velocity by Ratnikov, P. V.

“…A graphene-based superlattice formed owing to the periodic modulation of the Fermi velocity is considered. Such a modulation is possible in graphene deposited…”
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The role of magnetic resonance imaging in radiation Diagnosis of abdominal aortic aneurysm by Saidov, S. S., Skul'skiy, S. K., Morozova, N. P., Lubashev, Ya. A., Ratnikov, V. A.

“…Aneurysmal lesion of the abdominal aorta is a common disease, the frequency of which exceeds 8% [1, 2]. A quarter of the initially examined patients at risk of…”
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Predictors of Clinical Efficacy of Cytokine Hemoadsorption in COVID-19 (Clinical Trial) by Ratnikov, V. A., Sheglov, A. N., Abramovskiy, S. V., Simutis, I. S., Danilov, M. S., Ivanova, G. G., Syrovatskii, A. A.

“…Materials and methods. This study analyzed the results of treatment of 62 patients with severe COVID-19 in the intensive care unit using selective…”
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