Materials Literature
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In present paper we report results of computer simulation of crystalline and electronic structure of the molecular complexes: fullerene C 60 and Leuco Crystal Violet (LCV).Quantum chemical calculations regard to 3D nanocluster which is built up of three layers comprising nine C 60 •LCV molecules each.Electronic struct…
By using first-principles electronic structure and transport calculations based upon the density functional theory, we have studied the divacancy-defect effect of armchair graphene nanoribbons with zigzag edges. It is shown that the existence of 585 divacancy defects do not change the metallic characteristics of graph…
This study was carried out to investigate the bending strength of the Larix glulam beams which were reinforced with CFRP (Carbon fiber reinforced plastic) of which the reinforcement ratios were 0.7% and 2.1% by volume. In the bending test, the rupture shape of the reinforced glulam shows that the reinforced glulam bro…
The severe plastic deformation method known as constrained groove pressing (CGP) was used to produce ultrafine grained (UFG) structure in recrystallized aluminium (99.99%) at room temperature. The impact of repeated groove pressing, upon microstructure refinement was investigated by transmission electron microscopy (T…
6]. Silica fume influences concrete diffusivity in several ways: 1) densifying the microstructure of the interfacial transition zone regions, 2) reducing the overall capillary porosity for a fixed degree of cement hydration, and 3) producing a pozzolanic C–S–H gel with a relative diffusivity about 25 times less than t…
This paper describes mathematical modelling of traditional graphic structures within textile materials using binary matrices, which is made possible by the binary nature of these structures. An algorithm is presented for woven design construction (weave draft, threading draft, treadling draft and tie-up), as well as a…
Nano-sized Fe doped ZnO (Zn 1-xFe xO where x=0.00, 0.005, 0.01, 0.02, 0.03, 0.04) powders were prepared by simple solution combustion method. The powder X-ray diffraction patterns of these samples showed that they are single phase without any secondary phases. The DC electrical conductivity measurements were carried o…
In the present paper, ZnMnO 3 ceramics in a disk shape, synthesized by mixed oxide technique, has been investigated for NH 3 , ethyl alcohol, commercial liquor, methanol, H 2 O 2 and acetone vapours. Structural analysis of the ZnMnO 3 ceramics was carried out by X-ray diffraction (XRD). The XRD pattern revealed the na…
Fine cry stals of ammonium tungstophosphate (AWP) exchanger having high selectivity toward Cs + were encapsulated in the biopolymer matrices (calcium alginate, CaALG). The characterization of AWP-CaALG microcapsule was examined by scanning electron microscope (SEM), and the uptake and recovery of Cs + and Rb + were in…
BACKGROUND: Malignancies affecting the central nervous system are intractable to conventional therapies thereby requiring an alternative strategy, such as ultrasound irradiation. MATERIALS AND METHODS: We originally designed a transducer for intracranial insonation and investigated the effect of 210.4 kHz ultrasound o…
Zinc Sulfide thin films were successfully deposited on glass substrates by spray pyrolysis method. The films were grown at different substrate temperatures in the range, 300- 400˚C. The effects of substrate temperature on the structural and optical properties were studied. The XRD profiles showed that the films are po…
Biological aspects of new beta titanium alloys with different aspects of alloying elements such as Ta, V, Ni, Fe were assessed.
Lignin was extracted from different softwood and hardwood materials using sodium xylenesulphonate (SXS) solution as a solvent. Extracted lignin was precipitated from the solvents, washed and freeze-dried. The obtained lignin samples were analysed for purity using FT-IR (Fourier Transform Infrared Spectroscopy) and aci…
Thermal spray processes are widely used in industries to compensate for worn surfaces of different power transmission steel shafts. These include plain carbon, alloyed and stainless steels. This comes as a means of saving the worn parts by reusing them after they have been thermally sprayed by suitable wear-resistant…
A simplified and low-cost spray technique using perfume atomizer is employed for the fabrication of nanocrystalline antimony + fluorine doped tin oxide films (SnO2: Sb:F) from aqueous solutions of SnCl2 precursor. The structural studies showed that the grain size of the films increases from 32 nm for undoped film to 7…
Influence of reaction temperature, molar ratio of benzene to 1-alkenes, weight of catalyst and length of hydrocarbon chain of 1-alkenes were tested in alkylation of benzene by 1-alkenes. The liquid-phase alkylation was carried out in autoclave at autogeneous pressure. Synthetic zeolites of Y-type and mordenite in H-fo…
This article presents an original concept of warp-knitting machine construction with more than two needle combs. The technical and technological parameters of the warp-knitting machine with even and odd numbers of needle combs were characterised. The geometry of mutual positions of the basic machine elements were dete…
The improvement of mass transfer between glycerol and hydrocarbon phases during glycerol etherification with isobutene can be achieved by emulsifying the reaction mixture. This aspect was evidenced by performing an experimental study on glycerol etherification with isobutene using a cross linked cationic ion exchange…
Ulnaria Kutzing (1844) and Frenguelli’s Synedra subgenus Ulnaria (Kutzing) Frenguelli (1929), which are typified by S. ulna. Many monographs such as Iconographia Diatomologica, Bibliotheca Diatomologica, etc.) are recognizing and using Ulnaria. Furthermore, with the formal recognition of Ulnaria at the genus level, it…
Nano-crystalline Diamond like Carbon (DLC) film has been grown by Dense Plasma Focusing Method (DPF) using pure graphite Plasma, on different substrate (glass/silica) at different substrate temperature. The films were grown at substrate temperature 100 0 C, 150 0 C & 300 0 C by the high dense plasma of energy 1.3 k Jo…