the aim of this work was to investigate the effect of silica coating on bioactivity and biodegradability of hydroxyapatite. in this purpose, we firstly attempted to synthesis hydroxyapatite (ha) nanoparticles and its silica coated (si-ha) sample in collagen matrix using calcium chloride, sodium phosphate and sodium silicate. characterization of the sample was carried out using fourier transform...

introduction: gutta-percha (gp), is a neutral and non-toxic material. the aim of this animal study was to compare the biocompatibility of nanosilver coated gp (ns-gp) with conventional gp in subcutaneous tissues in a rat model. methods and materials: conventional gp and ns-gp were subcutaneously implanted in the backs of 20 male wistar rats ( n =10). a control animal was assigned for each trial...

this work presents free vibration analysis of laminated rectangular plates with classical boundary conditions based on the classical plate theory (cpt). the first involves an s-fgm plate with different boundary conditions. then involves a two-layer plate in which an s-fgm layer is coated on a homogeneous substrate with classical boundary conditions, simply called an s-fgm-coated plate; the othe...

The Moon is the closest astronomical object to the Earth, and the only one on which we can see significant surface features with our naked eyes (the Sun is too bright, and everything else is pointlike or, like the Andromeda galaxy, too dim). As a result, it has from time immemorial inspired many fanciful notions, including that the Moon is inhabited. In fact, life on the Moon was the subject of...

In this paper, we share our experience of applying the modern multimedia technologies to the traditional performing art in a drumming performance project, U-Drumwave. By deploying an interactive system on the drumming stage, the audience will see augmented visual objects moving on the stage in accord with the performer’s drumming rhythms. The creation and display of the visual objects are integ...

the issue of the property of computer data is veryimportant in different sciences such as religiousjurisprudence, law, economy and even computer science.the proof for the property of such data can have someeffects as well as civil and criminal acts. the nature ofthese data and their property require essential explanation.in this study, computer data is defined and then, it iscompared with diffe...

The following is a condensed narrative of Hospital Assistant K. M. Melita's personal sufferings. On the evening of the 30th May, 1902, he dined with some friends. There were live people present, three adult males, a lad aged 13 years, and his hostess. The repast consisted of wheaten chappaties,dal and rice, vegetables, and a highlyspiced curry. Fifteen minutes after food he felt giddy and thirs...

Initiated chemical vapor deposition (iCVD) is a novel process capable of producing a range of polymeric and multifunctional nanocoatings. The process utilizes hot filaments to drive gas phase chemistry which enables the deposition of true linear polymers rather than the highly crosslinked organic networks often associated with plasma enhanced CVD. Importantly, the object to be coated remains at...