Sparsity adaptive channel estimation algorithm based on compressive sensing for massive MIMO systems by Li-jun GE, Hui GUO, Yue LI, Lan ZHAO

“…A sparsity-adaptive channel estimation algorithm based on compressive sensing was proposed for massive MIMO systems when the number of channel multi-paths was unknown.By exploiting the joint sparsity characteristics of the sub-channels，the proposed block sparsity adaptive matching pursuit (BSAMP) algorithm first selected atoms by setting a threshold and finding the position of the maximum backward difference，which reduces the energy dispersion caused by the non-orthogonality of the observation matrix and improves the performance of the algorithm.Then a regularization method was utilized to improve the stability of the algorithm.Simulation results demonstrate that the proposed algorithm recovers the channel state information accurately and shows a high computational efficiency.…”
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Synthesis of Layered Organic-Inorganic Nanocomposites of Zinc and Copper by Laser Ablation in Liquid by V. T. Karpukhin, M. M. Malikov, T. I. Borodina, G. E. Val'yano, O. A. Gololobova

“…Dependence of the formation dynamics of these composites on an exposure time of radiation and on an aging time of colloids was studied by the absorption spectroscopy, by X-ray diffraction, by scanning electron (SEM), and atomic force microscopy (AFM). Composite (Cu2(OH)3+DS) with bilayered structure was produced by method of laser ablation of the copper metal target in liquid for the first time.…”
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Antifungal and Antioxidant Activities of Pyrrolidone Thiosemicarbazone Complexes by Ahmed A. Al-Amiery, Abdul Amir H. Kadhum, Abu Bakar Mohamad

“…Molecular orbital calculations provide a detailed description of the orbitals, including spatial characteristics, nodal patterns, and the contributions of individual atoms.…”
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Doping Induced Structural Stability and Electronic Properties of GaN Nanotubes by Anurag Srivastava, Mohammad Irfan Khan, Neha Tyagi, Purnima Swaroop Khare

“…As an effect of Mn doping (1–4 atoms), all the GaN nanotubes taken into consideration show semiconducting to metallic transition first and after certain level of Mn doping changes its trend.…”
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<i>tert</i>-Butyl Hypochlorite: A Reagent for the Synthesis of Chlorinated Oxindole and Indole Derivatives by Chun-Yan Liu, Xia Chen, Hai-Long Liu, Nan Wang, Xiao-Yu Zhou

“…Various synthetically useful functional groups, such as halogen atoms, cyano, nitro, and methoxycarbonyl groups, remain intact during the reactions. …”
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Graviatoms with de Sitter Interior by Irina Dymnikova, Michael Fil’chenkov

“…We present a graviatom with de Sitter interior as a new candidate to atomic dark matter generically related to a vacuum dark energy through its de Sitter vacuum interior. …”
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Integrated Confocal and Scanning Probe Microscopy for Biomedical Research by B.J. Haupt, A.E. Pelling, M.A. Horton

“…Atomic force microscopy (AFM) continues to be developed, not only in design, but also in application. …”
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Ozone Treatment Improved the Resistive Switching Uniformity of HfAlO2 Based RRAM Devices by Lifeng Liu, Yi Hou, Weibing Zhang, Dedong Han, Yi Wang

“…HfAlO2 based resistive random access memory (RRAM) devices were fabricated using atomic layer deposition by modulating deposition cycles for HfO2 and Al2O3. …”
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On anisotropic Triebel-Lizorkin type spaces, with applications to the study of pseudo-differential operators by Lasse Borup, Morten Nielsen

“…The decomposition function governs the structure of the decomposition of the frequency space, and for a very particular choice of decomposition function the spaces are reduced to classical (anisotropic) Triebel-Lizorkin spaces. An explicit atomic decomposition of the Triebel-Lizorkin type spaces is provided, and their interpolation properties are studied. …”
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Influence of coulomb effects on electron dynamics in orthogonally polarized two-color laser fields by Hristina S. Delibašić-Marković, Violeta M. Petrović, Ivan D. Petrović

“…This study examines the ionization dynamics of argon atoms under orthogonally polarized two-color laser fields, highlighting the impact of field strength ratio on ionization rates and electron momentum. …”
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Superradiant phononic emission from the analog spin ergoregion in a two-component Bose–Einstein condensate by Berti, Anna, Giacomelli, Luca, Carusotto, Iacopo

“…We make use of an analog gravity perspective to obtain a physical understanding of hydrodynamic instabilities stemming from the presence of quantized vortices in two-component atomic condensates and of their relation to ergoregion instabilities of rotating massive objects in gravitation. …”
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Optical and Structural Properties of Thermally Evaporated Zinc Oxide Thin Films on Polyethylene Terephthalate Substrates by M. G. Faraj, K. Ibrahim

“…X-ray diffraction patterns confirm the proper phase formation of the material. From atomic force microscopy (AFM) images, it was found that the root mean square roughness of the film surface increased as the film thickness increased. …”
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On deoxidation and modification of carbon steel by E. I. Marukovich, V. Yu. Stetsenko, A. V. Stetsenko

“…Steel modification is a nanostructural process in which modifying elements refine elemental iron nanocrystals from adsorbed oxygen and hydrogen atoms. Modifying elements reduce the concentration of dissolved hydrogen, which contributes to the modifying effect. …”
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STUDY REGARDING THE INFLUENCE OF CORROSIVE AGENTS ON THE SURFACE OF METALLIC MATERIAL LIKE STEEL by OLGA POPA, ANDREI-VLAD CIUBOTARIU, COSMIN CONSTANTIN GRIGORAȘ, ANA-MARIA ROȘU, VALENTIN ZICHIL

“…The metallic samples were analyzed in order to determinate the resistance at corrosion by stress-strain curves, deformation limit curves and (Atomic Force microscopy) AFM images. Relative results are obtained in the case of saline medium corrosion, meaning that the saline medium corrosion influences the metallic sample, in proportion to the degree of salinity. …”
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A cosmological reconstruction of the Higgs vacuum expectation value by Soumya Chakrabarti, V. Anagha, Selva Ganesh, Vivek Menon

“…We also compare the theoretically calculated $$\mu $$ μ variation with the observations of molecular absorption spectra from Cesium Atomic Clock data.…”
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Novel FeII and CoII Complexes of Natural Product Tryptanthrin: Synthesis and Binding with G-Quadruplex DNA by Yi-ning Zhong, Yan Zhang, Yun-qiong Gu, Shi-yun Wu, Wen-ying Shen, Ming-xiong Tan

“…Single-crystal X-ray diffraction analyses show that these complexes display distorted four-coordinated tetrahedron geometry via two heterocyclic nitrogen and oxygen atoms from tryptanthrin ligand. Binding with G-quadruplex DNA properties revealed that both complexes were found to exhibit significant interaction with G-quadruplex DNA. …”
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MEPHI’S EXPERIENCE IN FORMATION OF PERSONNEL RESERVE PARTICIPANTS by V. D. KOLYCHEV, T. V. BELYAEVA, Yu. A. BRONNIKOVA

“…The authors consider the system of personnel reserve formation at the University based on the best practices of successful companies, in particular the state atomic energy corporation Rosatom. Achievement of results and task solving by the participants of personnel reserve are possible due to formation of a pool of highpotential employees and the development of the competences necessary for NRNU MEPhI for the solution of perspective tasks of change management, organizational design, structural development and efficiency management. …”
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An architecture of database-based open resource service networking by Fenlin ZHOU, Xiaocong QIAN, Dongyu YUAN

“…The deep cloud-network integration hopes that the network side can provide fine-grained and on-demand customized services for cloud-side services, which poses a great challenge to existing IP bearer networks.To this end, an architecture of database-based open resource service networking was proposed.By abstracting the atomic service capabilities of the network and publishing services through a strongly consistent distributed key-value database, on-demand use of networking services at the cloud-side, joint cloud-network orchestration, and one point of business access could be achieved, which could flexibly meet the needs of cloud-network integration and achieve efficient carrying and refined services for diversified businesses.…”
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Characterization of the Porous Structure of HPLC Packings Based on Di(-Acrylic Phenyl)Sulphone and DVB by B. Gawdzik, W. Majewski, T. Jabłońska-Pikus, J. Osypiuk, W. Charmas, B. Podkościelna

“…The porous structure was characterized by the nitrogen adsorption method, inverse exclusion chromatography and atomic force microscopy. To describe the tendency of the microspheres to swell, the swelling propensities and the swellability coefficient were also determined. …”
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Layer dependent thermal transport properties of one- to three-layer magnetic Fe:MoS2 by Elham Easy, Mengqi Fang, Mingxing Li, Eui-Hyeok Yang, Xian Zhang

“…Abstract Two-Dimensional transition metal dichalcogenides have been the subject of extensive attention thanks to their unique properties and atomically thin structure. Because of its unprecedented room-temperature magnetic properties, iron-doped MoS2 (Fe:MoS2) is considered the next-generation quantum and magnetic material. …”
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