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Abstract: In this paper, we present the results of the study of the effect of residual La on crystal structure, magnetic properties of La1+Fe11.05Si1.95 ( = 0.00; 0.03; 0.06 and 0.09) compounds. The analysis of X-ray diffractions showed that when the La content increases to 9%, the structure still remains cubic in a typical NaZn13 arrangement ...
6 trang | Chia sẻ: thanhle95 | Ngày: 14/07/2021 | Lượt xem: 311 | Lượt tải: 0
Abstract: This paper addresses the problem of ℋ∞ finite-time boundedness for discrete-time neural networks with interval-like time-varying delays. First, a delay-dependent finite-time boundedness criterion under the finite-time ℋ ∞ performance index for the system is given based on constructing a set of adjusted Lyapunov–Krasovskii functionals ...
14 trang | Chia sẻ: thanhle95 | Ngày: 14/07/2021 | Lượt xem: 334 | Lượt tải: 0
Abstract: In this work, we investigate the defect structure of silicene with a vancacy and the adsorption mechanism of isopropanol on the surface of defected silicene by employing the Density Functional Theory method. The adsorption profile was determined based on the van der Waals functional optPBE-vdW, and the charge transfer between isopropan...
8 trang | Chia sẻ: thanhle95 | Ngày: 14/07/2021 | Lượt xem: 434 | Lượt tải: 0
Abstract: Calculation of gravity anomaly caused by an uneven layer is essential for quantitative interpretation. By comparing calculated anomalies with observed anomalies, we may infer some parameters of subsurface structures. There are many different methods for computing gravity effect of an uneven layer. This paper presents a comparative stud...
9 trang | Chia sẻ: thanhle95 | Ngày: 14/07/2021 | Lượt xem: 373 | Lượt tải: 0
Abstract. Titanium dioxide (TiO2) coated on multi-walled carbon nanotubes (CNTs) was synthesized with CNTs and TiO2 using the grinded method. The XRS spectra include that of the obtained single-phase anatase sample. The UV-Vis diffuse reflectance spectra show that the composite material can absorb at a higher wavelength and the absorption covers...
6 trang | Chia sẻ: thanhle95 | Ngày: 14/07/2021 | Lượt xem: 307 | Lượt tải: 0
Abstract. This work presents a molecular dynamics simulation (MDS) of CaSiO3 glass using Born–Mayer–Huggins potentials. The structural organization and structural phase transition under compression as well as network structure of CaSiO3 are clarified through analysis and visualization of molecular dynamics simulation data. The short-range order ...
11 trang | Chia sẻ: thanhle95 | Ngày: 14/07/2021 | Lượt xem: 341 | Lượt tải: 0
Abstract. In this paper, we investigate the existence and uniqueness of fuzzy solution for a class of general hyperbolic equations with state-dependent delays. We will prove the well-posedness of problem doesn’t depend on the domain and boundary data as well as initial data. Our method is based on Banach fixed point theorem in completely new we...
16 trang | Chia sẻ: thanhle95 | Ngày: 14/07/2021 | Lượt xem: 390 | Lượt tải: 0
Abstract: This paper proposes an optimization procedure for maximization of the biaxial buckling load of laminated composite plates using the gradient-based interior-point optimization algorithm. The fiber orientation angle and the thickness of each lamina are considered as continuous design variables of the problem. The effect of the number of ...
12 trang | Chia sẻ: thanhle95 | Ngày: 14/07/2021 | Lượt xem: 291 | Lượt tải: 0
Abstract: In this work, biomaterial based microlasers were successfully fabricated by a cost effective, simple and environmental friendly method. The as-fabricated microlasers were made of biocompatible material including ovalbumin doped Rhodamine B at low weight percentage. The lasers are shaped as solid-state spheres with various diameters ran...
6 trang | Chia sẻ: thanhle95 | Ngày: 14/07/2021 | Lượt xem: 390 | Lượt tải: 0
Abstract: Coronavirus disease 2019 (COVID-19) has been recognized as a global threat, and several studies are being conducted using various mathematical models to predict the probable evolution of this epidemic. The main objective of this study is to apply AutoRegressive Integrated Moving Average (ARIMA) model with the objective of monitoring an...
12 trang | Chia sẻ: thanhle95 | Ngày: 14/07/2021 | Lượt xem: 392 | Lượt tải: 0