Metal matrix nanocomposites (MMNCs) with high specific strength have been of interest for numerous researchers. In the current study, Mg reinforced AlN nanoparticles were produced using mechanical stirring-assisted casting method. Microstructure, hardness, physical, thermal and electrical properties composites characterized in this work. According to microstructural evaluations, ceramic uniform...

This study investigated the impact of electromagnetic stirring (EMS) on nickel-base alloy welds prepared with gas tungsten arc welding process. Alloy 52 and its variants, 52M 52MSS, were carefully evaluated their weld microstructure mechanical properties. The results showed that exhibited a typical dendrites, dendrites could be refined by stirring. Meanwhile, an application EMS, precipitates be...

By shining a tightly focused laser light on a Bose–Einstein condensate (BEC) and moving the centre of the beam along a spiral path one may stir the BEC and create vortices. It is shown that one can induce rotation of the BEC in the direction opposite to the direction of stirring. When a spoon, stick or another object of a similar shape is used to stir a liquid, the liquid rotates in the directi...

INTRODUCTION There have been many attempts to repair full-thickness articular cartilage defects using tissue-engineering techniques, focusing particularly on the regeneration of high-strength cartilage. Unfortunately, the strength is insufficient for fixation of the grafted part on large defect of joint surface. Current focus in our laboratory has been placed on the development of a novel silk ...

a copolymer of styrene and methyl styrene was synthesized by nitroxide - mediated “living” free radical polymerization )nmp). n-bromosuccinimide was used as a brominating agent to obtain a copolymer with bromine as its end group. this brominated copolymer was used as macro initiators for atom transfer  radical  polymerization  (atrp).  chemical  modifcation  of  the  clay  and transformation of...

The paper presents results from studying the possibilities of digital layering technologies (DLP SLA - Digital Light Projector Stereolithography) for construction biomedical orthodontics devices (aligners). Experimental data on mechanical and aesthetical properties (transparency) materials used has been studied in comparison with conventional producing aligners Vacuum Forming (VF). discuss infl...

About 60–70% of the organic matter contained by domestic wastewater is formed by lipids and proteins. The microorganisms that are able to degrade this organic matter produce hydrolytic enzymes that cannot be produced by standard cultivation techniques. The extraction methods have to include detergents or ionic exchange resins to recover qualitatively and quantitatively the enzyme activity. In t...