Materials Literature
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By using a one-step approach, In-filled MgO nanotubes with diameters of 200-300 nm and lengths of several micrometers are synthesized. A Gatan heating experiment in a transmission electron microscope (TEM) shows that In-filling begins to melt far below the melting point 156.6 degrees C of In and abnormally shrinks upo…
Cu(OH)2 nanorod and CuO nanosheet arrays have been successfully grown on the copper surfaces by a simple one-step solution-immersion process at ambient temperature and pressure. After the chemical modification with 1H, 1H, 2H, 2H-Perfluorodecyltriethoxysilane, the wettability of the copper substrate changed from super…
Red phosphors of Gd 1-x Al 3 (BO 3 ) 4 :Eu x 3+ were synthesized by using the solid-state reaction method. The phase structure and morphology of the phosphors were measured using X-ray diffraction (XRD) and field emission-scanning electron microscopy (FE-SEM), respectively. The optical properties of GdAl 3 (BO 3 ) 4 :…
The black cubic boron nitride (cBN) single crystal is synthesized by using hBN-LiH and hBN-Li 3 N-B as the raw materials at high temperature and high pressure (HTHP). The colors of the cBN crystal synthesized in an hBN-Li 3 N-B system vary from transparent yellow, half-transparent and then opaque black with the increa…
Preservatives are chemicals that are added to water-based products to prevent microbiological contamination and to protect the integrity of the product. The ideal preservative should be an effective antimicrobial that is stable, non-toxic, non-irritant and non-sensitising. Unfortunately preservatives are well known ca…
In this paper, a simplified control algorithm based on unit vector template generation (UVTG) is proposed for a star-delta supported three-phase four-wire (3P-4W) unified power quality conditioner (UPQC) topology for the improvement of different power quality problems. Different topologies reported in literature for 3…
The process of silk dyeing with natural dye extracts will produce a certain color. Using extracts of wood, leaf and their combinations will give some color gradations. This paper aims to create a new algorithm which can help one, whose intention is to formulate the combination of coloring process to achieve the desire…
Pure CdS thin films with different condition have been successfully deposited by thermal evaporation in vacuum on glass slide substrates. The substrates temperature of about 100oC and the vacuum of about 10-6 torr. The film was annealing with different temperature (300 to 500oC) and different time of annealing (10 to…
A four sub-lattice pseudospin lattice coupled mode model modified with third and fourth-order phonon anharmonic interaction terms and external electric field terms has been considered for ADP crystal. Expressions for shift, width, renormalized antiferroelectric mode frequency, dielectric constant and loss tangent have…
Abstract Two sets of neutron and gamma field investigations were carried out in the dismountable model of radiation shielding of the VVER-1000 mock-up on the LR-0 reactor. First, measurements and calculations of the 3He(n,p)T reaction rate and fast neutrons and gamma flux spectra in the operational neutron monitor cha…
Synthesis of nanoparticles was obtained from the hemp fiber ultrasonic method. Nanoparticles hemp fiber is used as bio-nanocoomposite Ultrasonic method of hemp fiber was done with the time variations of surfactant tween 80 3 % as many as 10 samples and 0 % as much as 3 samples. All samples were tested with the Particl…
Since the use of hexavalent chromium in automotive and electronic equipment is largely prohibited, many different hexavalent chromium free conversion layers have been developed. In this work, different Cr-free phosphate and polycarboxylate based conversion coatings were characterized (with electron microscopy and othe…
Abstract An efficient synthesis of a series of new pre‐functionalized triptycene and pentiptycene building blocks is reported. The key reaction is the nucleophilic aromatic substitution (SNAr) of the cyano‐substituted iptycene triflates with halide salts to afford the corresponding iptycene halides. Among the various…
The changes observed in the local atomic structure of an iron alloy with 6 at % Si as a result of thermomagnetic treatment in an alternating-current magnetic field and their correlation with magnetic characteristics, such as the domain structure and magnetic properties, have been investigated using Mössbauer spectrosc…
Tyre waste from end-of-life tyres (ELTs), sometimes erroneously defined as a type of waste, in fact represents a renewable energy resource that is highly competitive as replacement fuel to coal in the form of tyre-derived fuel (TDF) or useable as rubber crumb in other products. In this research study, the main utilisa…
Transparent conducting fluorine-doped tin oxide (FTO) thin films were prepared onto glass at low substrate temperature by an advanced spray pyrolysis technique, with stannic chloride and ammonium fluoride as precursors. The films were grown at different substrate temperatures varied in the range of 250–340°C. The effe…
The solubility product of EuO (pP EuO = 8.65 ± 0.5) and its dissociation constant (pK EuO = 5.67 ± 0.5) in NaI melts at 700°C have been determined by potentiometric titration with the use of a Pt(O2)|ZrO2(Y2O3) membrane oxygen electrode. Estimated on the basis of these parameters, the total solubility of EuO in NaI me…
A theoretical study of the adsorption of molecular oxygen on small bimetallic K m Cu n (m, n 4 and m, n=1,12) clusters was carried out using density functional methods, and compared with the adsorption of O 2 on bimetallic Li m Cu n (m, n 4) clusters. The study of the O 2 -K m Cu n system is important to understand th…
Damage to cryopreserved cells is dependent on the kinetics and morphology of ice formation in supercooled thermodynamic states. To gain a better understanding of ice crystallization phenomena under such non-equilibrium conditions, we undertook an investigation of crystal growth in highly supercooled water droplets in…
The morphology and physicochemical properties of tungsten powder produced by different methods are discussed. Powder produced by different methods differs significantly in the shape and mean size of the particles and in the specific surface.