Materials Literature
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Discute-se no presente artigo propostas alternativas e complementares às Leis de J.C.Maxwell, do eletromagnetismo clássico, baseando-se em determinadas hipóteses, exemplos hipotéticos e cálculos, com resultados que possam inferir novas interpretações acerca do fenômeno físico densidade de corrente de condução. Essas n…
Ce1-xPrxO2-d catalysts (x = 0.1, 0.2, 0.3 and 0.4) (CPOx) are synthesized using the glycine nitrate process. The CPO are used as catalysts in a hybrid direct carbon fuel cell with good results. The highest effect is achieved with the CPO30 compound.
Diatoms are microalgae organisms that have a cover of silica, with a fascinating ordered porous structure that varies in size, giving them some different characteristics. Because of their different size, shape, and structure, it has incredible properties, letting them be capable of been functionalized with other parti…
A Zr4+-doped anatase TiO2 nanotube array electrode was prepared using a process that included Ti anodizing, chemical immersion, and heat treatment. The compositions, microstructure, and electrochemical properties of the prepared electrodes were characterized. The results show that Zr4+ was successfully introduced into…
The paper focused on the improvement done in leadframe design to address the copper (Cu) burrs defect in assembly manufacturing. Newly qualified device struggled to hit the target yield due to the said Cu burrs defect. A holistic approach through why-why analysis was performed by the technical cross-functional team to…
Abstract This study examined the production and properties of functionally graded hybrid composites containing titanium di-boride (TiB2) and titanium tri-aluminate (Al3Ti) particles. The composites were produced by the centrifugal solid particle method at 850 °C. A detailed study of the microstructures, hardness and a…
Middle-infrared luminescence of bulk Al:Cr:ZnSe crystal under direct electrical excitation of Cr2+,5E− 5T2 transition, is reported. Effective cross-section of electrical excitation was estimated based on comparative luminescence measurements under electrical and optical (1560 nm) excitations. Calculation of the thresh…
Abstract In case-hardened steel components, fine-grain stability is one of the most important properties of the microstructure, since a single coarse grain in a fine-grain matrix is often sufficient to cause premature failure of the component under appropriate loading. In order to better understand the influence of he…
Na5Y9F32 single crystals doped with ∼ 0.8-mol% Ho3+, ∼ 1-mol% Tm3+, and various Er3+ ion concentrations were prepared by a modified Bridgman method. The effects of Er3+ ion concentration on 2.0-μm emission excited by an 800-nm laser diode were investigated with the help of their spectroscopic properties. The intensity…
The prospects and problems of multilevel optimization of the dispersed composition of self-compacting concrete are considered with the aim of significantly increasing its construction and technical properties, with a minimum content of binder. Theoretical and practical principles have been developed for the design of…
An insight into electronic structure and optical feature of S-adsorbed 3C–SiC (111) surface is carried out employing first-principles calculation. It is found that the [Formula: see text] and B position systems with adsorption energies of 3.880 and 3.895, respectively, are relatively stable compared to the [Formula: s…
Abstract Poly(phthalazinone ether ketone) (PPEK) is an amorphous thermoplastic polymer with a high glass transition temperature(Tg)exceeding 250°C. We describe the preparation of foams from PPEK and characterize their properties. PPEK foams were prepared using dichloromethane as a foaming agent. The foaming agent was…
We apply the heat jet approach to realize atomic simulations at finite temperature for a Frenkel–Kontorova chain with moving dislocation. This approach accurately and efficiently controls the system temperature by injecting thermal fluctuations into the system from its boundaries, without modifying the governing equat…
Supersaturating drug delivery systems are used to achieve higher oral bioavailability for poorly soluble drugs. However, supersaturated solutions often decline to lower concentrations by precipitation and crystallization. The purpose of the current research is to provide a mechanistic understanding of drug crystalliza…
Cost production efficiency through modified tunnel driyer by using the economizer so that the cost of fuel component eliminated. This study aimed to determine the performance of modified tunnel driyer associated with the quality of the product produced related to achived drying rate . From 3 (three) experiments conduc…
High Resolution Image Download MS PowerPoint Slide We use dispersion-corrected density functional theory to explore the bridge-site asymmetry for methanethiol adsorbed on Au(111) with two different S–C bond orientations. We attribute the asymmetry to the intrinsic character of the Au(111) surface rather than the adsor…
The sensitivity of discrete large-area power devices to the design aspects of the termination region and to the charging effects of the electroactive passivation layer on top is presented in this work. The junction termination featuring the variation of lateral doping (VLD) is revisited for such devices by focusing on…
We investigate the condition for the photoinduced enhancement of an excitonic order in a two-orbital Hubbard model, which has been theoretically proposed in our previous work [Phys. Rev. B 97, 115105 (2018)], and analyze it from the viewpoint of the Rabi oscillation. Within the mean-field approximation, we simulate re…
Abstract In this work, we have characterized the interactions of monospermine porphyrin derivative with calf thymus DNA (ct‐DNA) and poly (dG‐dC)2 in both B and Z conformation. By several spectroscopic techniques (UV–vis, electronic circular dichroism and resonance light scattering), the binding modes of monospermine…
Abstract Multiscale modeling in food is the cutting-edge strategy to revisit food structure and food composition to meet specific targets such as bioavailability, oral perception, or to evaluate the contamination of food by chemicals. A special implementation of Langevin dynamics is proposed to describe mass transfer…