Materials Literature
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The chief aim of this paper is to derive the matrix element of electron-phonon interaction in graphene as a function of phonon wave vector. The tight binding model, harmonic crystal approximation, and deformation potential approximation were employed for obtaining the matrix element. Required microscopic parameters ar…
Antibiotic resistance among bacteria is becoming a major problem in the treatment of many infections. Hence, there is need to find an alternative way by using medicinal plants to overcome the antibiotic resistance and source of novel drug for the treatment of these bacterial diseases. This work aimed at evaluating the…
Abstract- Computer modeling and simulations of physical processes play an important role in analysis of different physical and engineering phenomena including the dynamic characteristics of the semiconductor laser. In this paper we analyzed the dynamic behavior of a circular symmetric distributed feedback (CS-DFB) sem…
Synthesis of Ni(II)Complexes with ligand 4-(2,4-diaminobeenzaldimino)-3,5-dimercapto-1,2,4-triazole(L) as (NiLX3).H2O ,X= Pyridine, pyridine-oxide,Morpholine and picoline. Ligand (L) is synthesized by the condensation of 3,5-dimercapto-1,2,4-triazole and 2,4-diaminobenzaldehyde.The complexes are synthesized by refluxi…
The ordering and relative energy splitting between bright and dark excitons are critical to the optical properties of single-walled carbon nanotubes (SWNTs), as they eventually determine the radiative and non-radiative recombination processes of generated carriers. In this work, we report systematic high-field magneto…
Background: To define which rehabilitation methodology is best suited for patellofemoral pain syndrome as there is not much study to define in a comparative clinical set up with an O.K.C and C.K.C exercise with prolong follow up. | Hypothesis: The long-term effect of closed kinetic chain training is significantly bett…
Evaluation of magnetic properties of electrical steel is vital in improving the quality of electrical machinery since it is used as magnetic cores for transformers, motors and generators. A double yoke single sheet tester (SST) was modeled using two identical C-cores wound with copper wires at limb side in horizontal…
Uncertainty quantification requires repeated model executions in order to capture the impact of input nuclear data uncertainty on the responses of interest. Statistical sampling methods, such as Monte Carlo approach, have been widely used to complete uncertainty quantification. Despite their ease of implementation, th…
In Carbon nanotube (CNT) growth process via Chemical vapor deposition (CVD) method, there are two distinct regimes based on growth temperatures, so called mass transfer controlled and surface reaction controlled regimes, which represent different type of behaviour in growth. Operating in each regime has different char…
Films of solid deuterium at a temperature around 3 K have been irradiated by 1.5 or 2 keV electrons. The films were deposited on the silver electrode of a quartz crystal microbalance (QCM) suspended below a pumped liquid helium cryostat [1,2]. The thickness of the films ranged from 10 nm to up to 5 µm. The initial fil…
There are reviewed in the article the questions of combined disperse reinforcement of fine-grained concretes with steel wave fiber and polypropylene fiber. There is a possibility to increase the effectiveness of composition astringent, which is made by recrushing of portland cement with plasticizing additive POLYPLAST…
The most stable (Al(DMSO 2)3) 3+ complex cation in dimethyl sulfone (DMSO 2, (CH 3)2SO 2) has D3 symmetry with twofold axes in Al-S lines coincident with the twofold rotation axes of mutually turned DMSO2 ligands by ca 60 o . The central Al atom is hexacoordinated by six O atoms with nearly octahedral coordination. Mo…
The molecular interactions between the polar systems of p-hydroxy dodecyl benzoate(12HB) and Isoproponal for various volume fractions were studied at room temperature to determine the frequency dependent complex dielectric permittivity using Abbe’s refractometer for optical (1015Hz) frequency, the cavity perturbation…
p-Chlorobenzaldehyde-4-(2’-carboxy-5’-sulphophenyl)-3-thiosemicarbazone [p-CBCST] is spectrophotometric reagent for copper (II) in DMF. Reaction between metal ion and p- Chlorobenzaldehyde -4-(2’-carboxy-5’-sulphophenyl)-3thiosemicarbazone [p-CBCST] forming a pale yellow colored complex in the pH range 3.0-4.5. The co…
This article is a brief review of relevant expressions which are obtained for the second and the fourth moments of the EPR line in limit of high temperatures. These formulas can be used for the analysis of the angular dependence of EPR linewidth. In particular, measuring EPR linewidth in three mutually orthogonal plan…
We investigated the experimental deposition characteristics of zinc oxide (ZnO) films obtained by laser ablation method using an ultraviolet wavelength, with the intention of ensuring that the films meet the requirements of a photoelectrode in dye-sensitized solar cells (DSSC). Films were deposited using a picosecond…
ZhelyaZkov, S., G. ZSivanovitS, B. BraShlyanova and M. Marudova-ZSivanovitS, 2014. Shelf-life extension of fresh-cut apple cubes with chitosan coating. Bulg. J. Agric. Sci., 20: 536-540 the possible use of chitosan coating on fresh-cut apples was investigated in this research. Manually sliced apples were treated with…
To prepare lomustine-iohexol compound liposomes, and evaluate the properties, determine the entrapment efficiency. Liposomes were prepared by reverse evaporation method; orthogonal design was used to optimize the formulation. Free drugs and liposomes were separated using protamine aggregation method and entrapment eff…
A description of SamSTU innovative product a prototype and construction of a mechanical part of small-sized galvanic device designed for a formation of protective chromium-diamond coating on wear-subjected areas of drills, which are manufactured from high-speed steel. The new device allows to increase durability of to…
In this study, two-dimensional and numerical solution of sialon-based cutting tips’thermal conductivity was done by using SEM images. Finite element solutions were repeated for different area ratios and node amounts. Area ratios and node amounts changed according to the structure of finite element model. While sinteri…