abstract in respect to nano-technological studies and physiological and biochemical lesions of these materials on aquatic animals, in this study we examine the toxicity effects of nano-zinc oxide (zno nps) on hematological indices of common carp (cyprinus carpio). lc50 of nano zinc oxide was determined according to the mortality at 24, 48, 72 and 96 hours, respectively. during separate experime...

Nanostructures called hybrid polyion complexes (HPICs) are formed by adding metal ions to a solution of double-hydrophilic block copolymer, leading the spontaneous formation highly monodisperse nano-objects. In this paper, we propose simple strategy based on mixture ions: one chosen achieve high chemical stability nano-objects and second included provide desired property nanostructure. Using po...

Zirconium amides have become increasingly popular and useful due to their widespread use as precursors to other zirconium complexes and their use in the production of solid oxide fuel cells (SOFCs). Herein we report the mol-ecular structure of tris-(di-methyl-amido)-bis-(di-methyl-amine)-zirconium(IV) iodide, [Zr(C2H6N)3(C2H7N)2]I. The bond lengths and bond angles are consistent with a slightly...

Objective(s): Electrospun nanofibrous mats of poly(lactic acid) (PLA) and nanohydroxyapatite (nano-HA) were prepared and proliferation and differentiation of mesenchymal stem cells on the prepared nanofibers were investigated in this study. Materials and Methods: PLA/nano-HA nanofibers were prepared by electrospinning. The effects of process parameters, such as nano-HA concentration, distance, ...

The reduction of the equivalent oxide thickness (EOT) of the gate oxide has emerged as one of the most difficult tasks addressing future CMOS technology. In order to overcome gate tunneling, the introduction of so-called high-κ materials will be necessary [1]. Hafnium dioxide, HfO2 [2], zirconium dioxide, ZrO2 [3], and their silicates are assumed to be the most promising candidates to fulfil th...

Objective. The aim of this study was to evaluate the antimicrobial activity and pH changes induced by Portland cement (PC) alone and in association with radiopacifiers. Methods. The materials tested were pure PC, PC + bismuth oxide, PC + zirconium oxide, PC + calcium tungstate, and zinc oxide and eugenol cement (ZOE). Antimicrobial activity was evaluated by agar diffusion test using the followi...

The mechanical properties and good biocompatibility of zirconium and some of its alloys make these materials good candidates for biomedical applications. The attractive in vivo performance of zirconium is mainly due to the presence of a protective oxide layer. In this preliminary study, the surface of pure zirconium modified by anodisation in acidic media at low potentials to enhance its barrie...

Oil palm ash (OPA), a bio-agricultural waste from oil palm mills, was subjected to high-energy ball milling for 30 h and was converted into a nano-structured material. The nano-structured OPA was characterized for its particle size and crystallinity index by using Transmission Electron Microscopy (TEM) and X-ray Diffraction (XRD) analysis. The crystallite size obtained from TEM and XRD was foun...

Abstract This paper aims to study the mechanical properties of hybrid polymer composites and addition primary secondary fillers nano-aluminum oxide nanographene Kenaf epoxy composites. The vacuum bagging method was used fabricate advantage using is reduce blowholes. weight ratio fiber 50%–60%, matrix 40%, 0%–6%, 0%–3% considered. Mechanical like Tensile strength, Young’s modulus elongation, fle...