background: dental cobalt base alloys are biocompatible dental materials and have been widely used in dentistry. however, metals are bioinert and may not present bioactivity in human body. bioactivity is the especial ability to interact with human body and make a bonding to soft and hard tissues. the aim of the present research was fabrication and bioactivity evaluation of novel cobalt alloy/ f...

Cr–Mn system is very important for many applications. In the present work, reported intermetallic compounds have been studied using in situ high temperature neutron powder diffraction. For first time, site occupancies a σ phase are obtained as function of by Rietveld analysis. They compared with calculated data from DFT. The previously order-disorder transition around 1000 °C shown to be fact c...

Abstract Synthesis of Fe-Cr-Al alloy by powder metallurgy method was developed to produce a bioimplant material with low modulus elasticity. Microstructure characterization and phase identification were carried out support the development bone implant research. The alloys synthesized elemental composition 16 Cr (wt%) that added Al in variations 3, 6, 10 (wt%). synthesis an exceptional combinati...

the use of an inorganic phase in water-in-oil (w/o) microemulsion   has   received considerable attention recently for preparing metal oxide   nanoparticles. this is a technique, which allows preparation of ultrafine   metal oxide nanoparticles within the size range 40 to 80 nm. preparation of   nano zno and cr 2 o 3 studied, investigated in the inverse   microemulsion system. therefore the nuc...

The new heterometallic title complex, [Co(NCS)(2)(C(10)H(8)N(2))(NH(3))(2)][Cr(NCS)(4)(NH(3))(2)]·2CH(3)CN, has been prepared using the open-air reaction of cobalt powder, Reineckes salt and 2,2'-bipyridine (dpy) in acetonitrile. The crystal structure consists of discrete cationic [Co(NCS)(2)(NH(3))(2)(dpy)](+) and anionic [Cr(NCS)(4)(NH(3))(2)](-) building blocks, both with 2 symmetry, and ace...

PURPOSE The aim of the present study was to record the metal-ceramic bond strength of a feldspathic dental porcelain and a Co-Cr alloy, using the Direct Metal Laser Sintering technique (DMLS) for the fabrication of metal substrates. MATERIALS AND METHODS Ten metal substrates were fabricated with powder of a dental Co-Cr alloy using DMLS technique (test group) in dimensions according to ISO 96...

The article discusses the clinical manifestations, pathomorphology, pathogenesis and various treatment methods of cervical radiculopathy (CR). Article points out diagnostic difficulties arising from frequent discrepancy between neuroimaging data. issues choice conservative surgical are discussed, based on analysis data recent systematic reviews. In absence focal neurological symptoms, radicular...

Waste management is the first priority for many countries, so focus of this research on using waste materials in concrete as fillers and substituting ingredients such crumb rubber (CR) fine aggregates. The utilization has gained attention recently, but CR substitution results a reduction mechanical durability properties due to weak bonding lower stiffness CR. To overcome issue, addition strengt...

Stainless steel-based composites (SMCs) mixed with 316L stainless steel powder and Fe-Cr-B based M alloys ed M) were manufactured using the injection molding (PIM) process, their microstructure mechanical properties investigated. To examine effect of content on SMCs, fraction was controlled to 30 vol.%, 50 70 vol.%. It observed that PIM-processed Fe-Cr-B/316L SMCs (30 vol.%) had γ-austenite min...

The intestinal permeability to markers was assessed in preruminant calves fed different milk substitutes containing skimmed milk powder or whey and soyabean products of differing antigenic activity as the protein sources. In Experiment 1, the 6 h urinary excretion of lactulose transiently decreased with the antigenic soyabean product but not that of sucrose of D-mannitol. In Experiment 2, the 6...