Materials Literature
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In this study, stabilization treatment of heavy metals such as Ni, Cu, Pb, and Zn in contaminated marine sediment was achieved using bentonite. Stabilization experiment was accomplished by wet-curing with bentonite for 150 days. From the sequential extraction results of heavy metals, it was observed that the easily ex…
Nano-composite permanent magnetic material is a new type of permanent magnetic material, and it is the synthesis of soft and hard magnetic phase within the nanoscale. On the basis of exchange coupling hard magnetizing theory, nano-composite permanent magnetic material can, at the same time, have high residual magnetiz…
In this paper, a broadband circuit model of a potential transformer (PT) based on fractional calculus and circuit augmentation method was proposed to improve the high frequency characteristic while providing physical significance of the existing traditional equivalent circuit model with simple structure. In order to c…
A new class of ferritic superalloys containing B2-type zones inside parent L21-type precipitates in a disordered solid-solution matrix, also known as a hierarchical-precipitate strengthened ferritic alloy (HPSFA), has been developed for high-temperature structural applications in fossil-energy power plants. These allo…
Tujuan dari perancangan alat bantu pegang fleksibel ini adalah untuk mempermudah dalam proses penggerindaan batu mulia menjadi bentuk polyhedron, pengasahan mata bor (dressing), dan untuk penghalusan specimen uji kekerasan. Selain itu perancangan alat ini juga bertujuan untuk menghasilkan suatu alat yang mampu digunak…
medio para corrugar y test liner a partir de cajas corrugadas recicladas.Parte 1.
El presente estudio describe la elaboración y caracterización de una fibra sintética bactericida compuesta por Tereftalato de Polietileno reciclado (rPET) y nanopartículas de cobre (0), mediante un proceso de extrusión utilizando una extrusora monohusillo. Las nanopartículas empleadas fueron elaboradas utilizando radi…
Pengembangan teknologi di bidang konstruksi yang semakin maju tidak dapat dipisahkan dari pengelasan, karena pengelasan mempunyai peranan penting dalam rekayasa dan reparasi logam. Terdapat beberapa faktor yang berpengaruh terhadap hasil dari proses pengelasan tersebut diantaranya adalah tegangan busur, kecepatan peng…
En el presente trabajo estudiamos la textura de capas superconductoras de YBa2Cu3O7-da través de la difracción de rayos-X. Las capas fueron crecidas sobre el sustrato monocristalino SrTiO3 (100) mediante la deposición de solución química. Posteriormente se sometió la muestra a tratamientos térmicos en una atmósfera ox…
In display such as LCD, LED, and AMOLED or semiconductor related industries are required to have static ionizer in order to produce reliable goods. The most general type of ionization is called, corona discharge that has a slight chances to generate unequal and unstable amount of each +/- ion to the target object. The…
Novel surfactant/polyelectrolyte complexes have been the focus of recent research efforts due to their applications in consumer products, petroleum engineering and biotechnology. The interaction between surfactant and polyelectrolyte results in considerable system property change, such as foam stability, wettability a…
Oriental Journal of Chemistry is a peer reviewed quarterly research journal of pure and applied chemistry. It publishes standard research papers in almost all thrust areas of current chemistry of academic and commercial importance. It provides a platform for rapid publication of quality research papers, reviews and ch…
ITO(indium tin oxide) 박막을 RF 마그네트론 스퍼터링법에 의해 산소 분압을 0에서 $6{\times}10^{-5}$ Pa로 변화시킨 조건 하에서 PET 기판 위에 증착하였고, 산소 분압에 따른 ITO 박막의 전기적, 광학적 특성과 결정성의 변화를 조사하였다. 산소 분압이 $1{\times}10^{-5}$ Pa 이하에서는 증착된 ITO 박막은 비정질 구조를 가지는 반면에 $2{\times}10^{-5}$ Pa 이상에서는 결정질임을 확인하였다. 이러한 구조적 변화와 더불어 전하 캐리어 농도와 비저항이 증가하였다. 산소 분압이 $4{\times}10^{…
Indium tin oxide (ITO) thin films (30 nm) were deposited on PET substrate by reactive DC magnetron sputtering using In/Sn(2, 5 wt.%) metal alloy target without intentionally substrate heating during the deposition under different DC powers of 70 ~ 110 W. The electrical properties were estimated by Hall-effect measurem…
Layered materials in which atomic sheets are stacked together by weak van der Waals forces can be used to fabricate two-dimensional systems. They represent a diverse and rich, but largely unexplored, source of materials. Atomically-thin structures derived from these materials possess a number of interesting electrical…
Laryngotracheal disorders resulting in airway obstruction, although rare, can cause significant morbidity and can be life threatening. Current treatments include augmenting the airway with the patient's own rib cartilage. Specialized surgical technique and an invasive, multi-site surgery are required for this procedur…
In this paper, we present the results of calculation of the structure and thermodynamics properties of the dispersions colloidal solution ended using the variational method with the scaling process. We assume that the interaction potential between colloids is of Yukawa or Sogami types. The former is purely repulsive,…
En este trabajo se realizó un dimensionamiento preliminar, empleando un simulador comercial, de una planta de producción de poli(β-hidroxibutirato), PHB, mediante el empleo de microorganismos y a partir de glicerol como materia prima. El proceso consta de tres sectores: a) purificación de la materia prima, en donde la…
Aiming to obtain a type of oil displacement with both surface activity and polymer performances, this paper, basing on mixing initiators at low temperatures, proposed a type of anion-nonionic surface-active polymer oil displacement agent (ANSP-1) by introducing polymerizable anion-nonionic surfmer (ANS-1), acrylamide…
Oriental Journal of Chemistry is a peer reviewed quarterly research journal of pure and applied chemistry. It publishes standard research papers in almost all thrust areas of current chemistry of academic and commercial importance. It provides a platform for rapid publication of quality research papers, reviews and ch…