Materials Literature
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In order to obtain the knowledge of the bond energy relations in alkali silicate glasses and crystals, a series of thermochemical calculations was carried out.The experimental data used for the calculation were the previously reported values of the heat of solution of silicates in high alkali region and the present va…
Caking mechanism of common salt was studied from a behavior of a small amount of liquid on the surface of the salt crystals and following results were obtained.1. The caking is an attachment of salt crystals either by pressure or by recrystallization. The caking of the salt in a warehouse is attributed to the atter.2.…
Seven iron-silicon alloys having various silicon contents up to about 14% were polarized in 2 N H2SO4. The relationship between silicon contents in the alloys and various properties such as the maximum or the limitting current density and the passive potential and the passive current density were investigated. 14% sil…
Corrosion is a common problem that often occurs in metals. Corrosion is the damage or degradation of metal due to the redox reaction between a metal with various substances in the environment that produce undesirable compounds. In the event of corrosion, the metal will experience oxidation while the air will experienc…
(1970). Occurrences and Resources of China Clay in India. Transactions of the Indian Ceramic Society: Vol. 29, No. 3, pp. 15N-20N.
The amplitude of lattice vibrations in a crystal of cadmium sulphide has been measured, as a function of the electric field applied to the crystal, by use of a Mossbauer scattering technique. The increase in amplitude which occurs for fields greater than the critical field is clearly demonstrated, and the interpretati…
<p>The sintering mechanisms of nanoscale copper powders have been investigated. A molecular dynamics (MD) simulation with the embedded-atom method (EAM) was employed for these simulations. The dimensional changes for initial-stage sintering such as characteristic lengths, neck growth, and neck angle were calcula…
The caryotype of H. bicolor and H. igneum coincides in number and morphology (2n=16); satellites are born by submetacentric chromosomes at the fourth couple.In some cells of H. bicolor small satellites were found at the second couple, as heterozygotic character.
<p><italic>P</italic>-type ternary Bi<sub>0.5</sub>Sb<sub>1.5</sub>Te<sub>3</sub> alloys are fabricated via mechanical alloying (MA) and spark plasma sintering (SPS). Different ball sizes are used in the MA process, and their effect on the microstructure; hardness,…
Premature corrosion of steel roof panels of a prefabricated factory building was reported just two months’ after installation. In order to find out the causes of this corrosion, physical investigation of the affected roof was carried out and samples of the panels and relevant information were collected. Laboratory tes…
Abstract
In present years, the synthesis of iron oxide nanoparticles (IONPs) has established excessive potential in biological applications due to their non-toxic role in biological systems, biocompatibility, and biodegradability. Ongoing research efforts focused on IONPs in the expansion of novel technologies as they can be s…
Pandanus atrocarpus, or locally known as mengkuang plant is likely to be potential natural fibre reinforcement in composite. Both the Pandanus leaves, and fibres extracted from the Pandanus leaves were used in composite fabrication. Fibres were extracted from Pandanus leaves with water retting process. Pandanus compos…
Con el objetivo de analizar la distribución geográfica de 28 especies del género Navicula Bory sensu stricto identificadas en humedales de alta montaña en Argentina, se consultaron cinco catálogos disponibles, publicaciones no incluidas en esas obras y datos recabados en relevamientos inéditos realizados por nuestro e…
<p>The recent rise in applications of thermoelectric materials has attracted interest in studies toward the fabrication of thermoelectric materials using mass production techniques. In this study, we successfully fabricate <italic>n</italic>-type Bi<sub>2</sub>Te<sub>2.7</sub>…
Abstract In conclusion we must point out that the basic text book for this subject is C. H. Leigh-Dugmore's “Microscopy of Rubber”. Unfortunately parts of this excellent book need extending to cover modern developments some of which have been reviewed in this paper.
Different types of chemical treatment of textile are widely applied in advanced textile. Finishing of textile can provide additional functional properties for products or/and to improve the appearance of final product as well as to improve their mechanical properties. In this research the influence of the industrial t…
Three known compounds were isolated from the n-hexane extract of the rihzomes of Sansevieria hyacinthoides, they were two steriods; β- sitosterol (1) and daucosterol (2), and a flavonoid; isokaemferide (3). The structures of the compounds were elucidated on the basis of NMR spectral analysis as well as comparison with…
The reaction between three epimeric tri-2-norbornylboranes and neutral 30% aqueous hydrogen peroxide at 25° has been investigated in the absence and presence of iodine and of carbon tetrachloride. Whereas norbornane, 2,2′-binorbornane, norbornyl iodide, and norbornyl chloride are produced through an intermediate norbo…
Abstract Heat stability in air of chemically crosslinked polyethylene loaded with medium thermal (MT) carbon black was studied as a function of temperature and carbon black content. Weight loss at 200° to 250°C is practically independent of the carbon black concentration. Modulus–temperature curves are changed with va…