Materials Literature
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The demand for bio-polymer compound (BPC) has attracted attention in various applications from industrial to medical. Therefore, the mechanical and thermal stability properties of recycling industrial waste BPC are very important to investigate. The waste BPC for this study is based on a mixture of hydroxylated waste…
The paper presents original data concerning one aspect of the machinability of special, wood particle boards bonded with waste thermoplastics.The study focused on the measurement of drilling torque and thrust force.The classic idea of machinability indexes was used.The experimental plastic particle boards (with a nomi…
Several silicon nanoclusters (Si n, with n in the range 1–96) electronic and charge states are calculated using sophisticated compound methods, such as G1–G4, CBS, and W1, as well as using a flavor of density functional theory with a variety of basis sets. Results are compared with very precise experimental data when…
Tantalum anodic oxide film was prepared in citric acid solution of various concentrations and the prepared Ta anodic oxide film was characterized by various electrochemical techniques and X-ray photoelectron spectroscopy (XPS). The prepared Ta anodic oxide film showed typical n-type semiconducting properties and the d…
We have investigated the electronic structure of superconducting (SC) and nonsuperconducting (non-SC) K${}_{x}$Fe${}_{2\ensuremath{-}y}$Se${}_{2}$ using x-ray photoemission spectroscopy (XPS). The spectral shape of the Fe 2$p$ XPS is found to depend on the amount of Fe vacancies. The Fe 2${p}_{3/2}$ peak of the SC and…
This study elucidated the effects of coherence of grain boundary of 6 mol % Y2O3-doped ZrO2 (YSZ) thin films on ionic conductivity. The YSZ thin films were deposited with several orientation textures on MgO (100) and Al2O3 (102) substrates using metal–organic chemical vapor deposition (MOCVD). Impedance measurements r…
Lu₂O₃:Pr,Hf ceramics were investigated using mainly thermoluminescence (TL) technique. Their ability to efficiently store energy acquired upon irradiation with X-rays was proven. The best TL performance was achieved for compositions containing 0.025%-0.05% of Pr and about 0.1% of Hf. Further enhancement of TL efficien…
There are techniques for detecting the motor current with a sensor that is placed in the DC portion of the inverter. Also, when using a DC current sensor, there is a case that current cannot be reproduced. These PWM techniques have been modified so that the detection rate of the motor current is improved. However, the…
This research is to develop a carbon composite prepared from carbon coir fibers that is reinforced with epoxy resin. Carbon coir fibers were taken from three types of coir fiber specifically designated as CKCF, CYCF and CRCF. The samples were prepared using epoxy resin reinforced with carbon at different weight percen…
An NMR titration method has been used to simultaneously measure the acid dissociation constant (pKa) and the intramolecular NHO prototropic constant ΔKNHO on a set of Schiff bases. The model compounds were synthesized from benzylamine and substituted ortho-hydroxyaldehydes, appropriately substituted with electron-dona…
Abstract A single step electrospinning of chitosan and chitosan derivative-chitosan lactate nanofibres was studied in this paper. Chitosan was dissolved into acetic acid to produce structure-stable nanofibres. The effect of chitosan concentration and the content of acetic acid on the fibre diameter and morphology of n…
In this study, we compared the efficiency of osteoblast differentiation media (ODM) containing three distinct reagent combinations in osteoblastic differentiation of human bone marrow-derived mesenchymal stem cells (hBMSCs) in monolayer culture. In addition, we analyzed growth and differentiation of hBMSCs on silk sca…
The problem faced by purun craftsmen is the reduced of purun raw material which commonly used such as purun danau and purun tikus. Hence it tends to utilized purun bajang which lesser known but potential used as a raw material purun craft. The research aims to obtain the information on the physical and mechanical prop…
The paper assesses progress of gas-phase silicon cleaning methods over the last 25 years. Early predictions regarding ability to clean silicon surface in gaseous ambient are confronted with the reality of today's advanced semiconductor technology where choices between liquid- and gas-phase cleans are based on the natu…
Tantalum anodic oxide film was prepared in citric acid solution of various concentrations and the prepared Ta anodic oxide film was characterized by various electrochemical techniques and X-ray photoelectron spectroscopy (XPS). The prepared Ta anodic oxide film showed typical n-type semiconducting properties and the d…
The electronic and the magnetic properties of (001) surface of <TEX>$KCaN_2$</TEX> half-metallic compound with full-Heusler structure are studied with the use of a full-potential linearized augmented plane wave method. Two possible terminations of the surface are considered and only the one with N atoms in the topmost…
ABSTRACT We demonstrate optimized supercapacitive characteristics of electrodeposited polyaniline by adding organic salt into electrolyte. The optimum amount of the organic salt is found to be 2 wt % which provides better ionic conductivity of the electrolyte, leading to the improved specific capacitance of 259 Fg −1…
Preparation of edible film from carrageenan has been studied in this research. The edible films were made by phase inversion method with various carrageenan concentrations of 1 %, 1.25 %, 1.5 %, and 1.75 % (b/v) and palm oil as plasticizer with variation concentration of 10%, 20% and 30% (v/v). The edible films were c…
Titanium-dioxide nanoparticle (TiO2-NPs) dispersion for toxicological studies is classically achieved by high power sonication. The aim of this study was to compare the dispersion state resulting from different dispersion techniques, and to correlate dispersion state and dispersion method to in vitro toxicity in a fin…
A recently discovered ferroelectric columnar liquid crystal (LC) is reviewed. Particular attention is paid to differentiate it from conventional ferroelectric LCs such as the smectic-C*-type and bent-core LCs from the symmetry point of view. After reviewing ferroelectric smectic LCs (FSLCs), a ferroelectric columnar L…