Experimental study of gamma-ray attenuation capability of BO-ZnO-NaO-FeO glass system.

In the present work, a glass system with developed composition consisting of BO, ZnO, NaO and FeO samples has been investigated. Glass samples were prepared using the melt quenching method and the density of the system was measured using Archimedes' principle. Spectroscopic analysis using a gamma source and a high-purity germanium detector at four energies of 0.

Effects during the cathode polarization of porous silicon.

The large inner surface of porous silicon (pSi) not only provides unique opportunities for introducing various foreign materials into the open pores, but is also responsible for a lot of processes during the pSi cathode polarization. PSi surface and contact effects are considered in the article. The space charge layer induced by both the surface states and the double electrical layer in the solution is shown to have a decisive influence on the electrical conductivity of the silicon skeleton in the pSi layer.

Experimental investigation of radiation shielding competence of BO-NaO-AlO-BaO-CaO glass system.

Aiming to extend the scope of utilizing glass in radiation shielding, this work investigates the radiation interaction response of a borate-based glass system. Four borate-glass samples of different substituting concentrations of calcium oxide ( )BO: NaO AlO BaO: CaO were prepared. To assess the shielding performance of the prepared glass samples, a high-purity germanium detector and different radioactive sources (different energies) were used.

Effect of gelatin concentration on the characterizations and hemocompatibility of polyvinyl alcohol-gelatin hydrogel.

Background: The design and fabrication of hemocompatible and low-toxicity formulations remains a challenging task. Hydrogels are of considerable importance for biomedical applications since they are highly compatible with living tissue, both in vivo and in vitro.

Objective: The present study aimed to develop and evaluate the characterizations and in vitro hemocompatibility of a hydrogel using polyvinyl alcohol and gelatin with different concentrations.

Dielectric relaxation and alternating current conductivity of lanthanum, gadolinium, and erbium-polyvinyl alcohol doped films.

Fourier transform infrared (FTIR) spectrum dielectric constant, ε', loss tangent, tan(δ), electric modulus, M*, and ac conductivity, σ(ac), of pure polyvinyl alcohol (PVA) as well as La-, Gd-, and Er-PVA doped samples have been carried out. The dielectric properties have been studied in the temperature and frequency ranges; 300-450 K and 1 kHz-4 MHz, respectively. FTIR measurements reveal that La(3+), Gd(3+), and Er(3+) ions form complex configuration within PVA structure.