Materials Literature
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Micro-sized rods show a lower phase transition temperature than nano-sized rods, and this is interpreted on the basis of nucleating defects.
Polypyrrole-flyash (PPy-flyash) composite was synthesized by chemical oxidative emulsion polymerization of pyrrole monomer using FeCl3 as an oxidant. The synthesized composite was loaded in epoxy resin and subsequently coated on mild steel substrate using powder coating technique. XRD and FTIR analyses of the synthesi…
During hydrothermal synthesis, the pH value plays a crucial role in the formation of crystal morphology.
Three dinuclear zinc(II) complexes with "end-off" compartmental ligands, namely 2,6-bis(N-ethylmorpholine-iminomethyl)-4-R-phenol (R = -CH3, Cl, (t)Bu) have been synthesized with the aim of exploring the role of the para substituent present in the ligand backbone in controlling the structural diversity, photophysical…
This paper presents the results of a comprehensive study of water scale found in water distribution system of Taliouine city in the south of Morocco. Physico-chemical properties of drinking water supplied to the city were evaluated. The data showed a high level of soluble salt in water. Concentrations were calcium 108…
Atrial fibrillation (AF) is a highly prevalent condition associated with pronounced cardiovascular-related morbidity, mortality and socioeconomic burden. It accounts for more hospitalization days than does any other arrhythmia. This article reviews the basic electrophysiology of AF, electrical and structural remodelin…
Tb 3+ ‐doped zinc sulfide (ZnS:Tb 3+ ) nanocrystals were synthesized by spray precipitation with sulfate‐reducing bacterial (SRB) culture at room temperature. The morphology of the SRB and ZnS:Tb 3+ nanocrystals was examined by scanning electron microscopy, and the ZnS:Tb 3+ nanocrystals were characterized by X‐ray di…
Hot corrosion tests of alumina (Al2O3) and carbon silicate (SiC) ceramics exposed to KCl–NaCl molten salt were performed at high temperatures (700 and 800°C) and for long times (100–400 h) in order to improve the reliability of tanks and heat exchangers for molten salts. The samples were tested by being immersed in mo…
Researches of catalysts Pt/WO3/ZrO2 (Pt content is 1 wt.%) at varying WO3 concentrations (10-35% wt.) are carried out in the isomerization reaction of n-heptane, under the following conditions: temperature range is 140-220°C, pressure is 1.5 MPa, the ratio H2/n-heptane is 3 (mol.), heptane volume velocity is 1h-1. X-r…
Silicon nanowires (SiNWs) attached to a wafer substrate are converted to inversely tapered silicon nanocones (SiNCs). After excitation with visible light, individual SiNCs show a 200-fold enhanced integral band-to-band luminescence as compared to a straight SiNW reference. Furthermore, the reverse taper is responsible…
OBJECTIVE: In this study, nano-biocomposite composed of poly (lactide-co-glycolide) (PLGA) and chitosan (CS) were electrospun through a single nozzle by dispersing the CS nano-powders in PLGA solution. The cellular behavior of human adipose derived stem cells (h-ADSCs) on random and aligned scaffolds was then evaluate…
This study aims to evaluate the application potential of water soluble chitosan derivatives and microfibrillated cellulose (MFC) as barrier and mechanical strength additives in coating formulas for packaging paper grades. Three water soluble chitosan derivatives with specific functionalities were obtained in laborator…
The reaction of Ba(NO3)2 with TiO2 was studied by thermogravimetric (TG) and differential scanning calorimetric (DSC) techniques up to 1000?C and in nitrogen atmosphere. It was found that the formation of BaTiO3 takes place above 600?C and that precursor mixing time and heating rate have no effect on the reaction temp…
In orthodontics, a reduction in static friction between the brackets and wire is important to enable easy tooth movement. The aim of this study was to examine the effects of a homogeneous diamond-like carbon (DLC) coating on the whole surfaces of slots in stainless steel orthodontic brackets on reducing the static fri…
In this study, we have investigated the recovery of energy lost as waste heat from exhaust gas and engine coolant, using an improved thermoelectric generator (TEG) in a LPG fueled SI engine. For this purpose, we have designed and manufactured a 5-layer heat exchanger from aluminum sheet. Electrical energy generated by…
Ternary FeNi@C@polyaniline (PANI) nanocomposites are synthesized by combining the arc-discharge process and an <italic>in situ</italic> chemical oxidative polymerization reaction, and can be seen as a good candidate for microwave absorbents with a broad bandwidth.
A new 525 kV DC cable system with a power rating range up to powers above 2 GW has been developed for both subsea and underground applications. The extruded HVDC cable system technology is appropriate when power needs to be efficiently delivered through populated or environmentally sensitive areas, or in coastal and o…
CIS/ZnS QDs were synthesized by microwave irradiation in air. The fabricated QDs/PMMA composite films were first applied to Si solar cells to improve the conversion efficiency by 3.8%.
Bubbles interact strongly with sound fields. Gas bubbles in the ocean generate sound as they are produced by breaking waves, rainfall, methane seeps, etc., and such emissions can be used to size and count the bubbles present. However after production, when the pulsations of such bubbles have damped away, they are sile…
Polycrystalline graphene films grown by chemical vapor deposition (CVD) possess outstanding electrical and optical properties, which make them alternative materials for applications in transparent conductive films (TCF).