Surface modification of dental implants is a key process in the production of these medical devices, and especially titanium implants used in the dental practice are commonly subjected to surface modification processes before their clinical use. A wide range of treatments, such as sand blasting, acid etching, plasma etching, plasma spray deposition, sputtering deposition and cathodic arc deposi...

Titanium Nitride (TiN) coatings have led the way for providing increased wear resistance and extended life of cutting tools, whether carbide inserts or high-speed steel. Where the earliest applications were for high temperature substrate materials (carbides) and chemical vapor deposition (CVD) was the process of choice, later developments in the physical vapor deposition (PVD) technology, espec...

Aluminum nitride (AlN) film coatings have been obtained by a new technique of hybrid helikon-arc ion-plasma deposition. Possibility to combine the magnetic-filtered arc plasma deposition technique with a treatment in RF plasma of helicon discharge allowed us to deposit AlN coatings on thermolabile substrates, significantly increasing the deposition rate. A study of spectral properties of AlN fi...

Indentat~on technque was used to characterize the mechanical properties (elastic modulus, hardness and toughness) both of PVD coatmgs and autocatallt~c chem~cal deposition ones. TIN and TiCN films m ere respectively depos~ted on a duple.: s t adess steel substrate using PVD technque. moreover a Nip films (P content about 8O6) and a NIPIB,C composite ones were used as comparison materials The ef...

Schistosomiasis is one of the most prevalent parasitic infections worldwide. Establishment of sensitive assays to detect schistosomiasis in situations with low transmission is crucial. The present study aimed to estimate the current status of S. haematobium infection in different Egyptian localities. Urine samples were collected from 960 asymptomatic men from Great Cairo (low-endemic) and Fayou...

A thin film of vanadium oxide Magnéli phase V4O7 was produced using cathodic arc sputtering. X-ray diffraction, Rutherford backscattering spectrometry and Raman investigations confirmed the formation this phase. The spectrum differs considerably from another oxide, V3O5, showing that spectroscopy is an excellent tool for distinguishing between these two phases. Temperature-dependent measurement...

the magnetisation and electron spin resonance (esr) spectrum of two specimens of tetrahedral amorphous carbon (ta-c), deposited from a filtered cathodic arc, were measured over a wide temperature range. the magnetisation was found to consist of superparamagnetic, paramagnetic and diamagnetic contributions. the superparamagnetic contribution resembled that recently found in carbon prepared from ...