Abstract A molecular dynamics model is created for argon near the critical point. As temperature falls at a constant density less than critical, It established that drop of liquid forms in gas environment. This not spherical, but cylindrical. Liquid melting point (110 K, 1.513 g/cm 3 ) also modeled. The values Voronoi polyhedra volumes (VPVs) around atoms are calculated and their distribution p...

OBJECTIVE This study was designed to evaluate the effect of argon laser irradiation on development and progress of enamel demineralization around orthodontic brackets. MATERIALS AND METHODS Fifty caries-free, intact human premolars were randomly assigned to one of the following five equal groups: Groups 1 (control) and 2: The brackets were bonded using conventional halogen light for 40s and a...

Time resolved atomic emission, atomic absorbance, and laser-induced atomic fluorescence measurements of a Ž3 . millisecond pulsed glow discharge, made perpendicular to the insertion probe, provide temporal profiles of 1s P 5 2 Ž3 . and 1s P metastable argon atom populations. Acquisition of these profiles at different spatial positions in the 3 0 plasma provides data from which two-dimensional s...

PURPOSE To describe the use of argon laser iridoplasty following implantation of a multifocal intraocular lens (IOL) to improve visual function. METHODS Argon laser spots of 500-mW power, 500-μm spot diameter, and 500-ms duration were placed in the midperipheral iris in the area in which the iris was encroaching on the IOL. RESULTS Argon laser iridoplasty provided statistically significant ...

The physics of helium and argon rf discharges have been investigated in the pressure range from 50 to 760 Torr. The plasma source consists of metal electrodes that are perforated to allow the gas to flow through them. Current and voltage plots were obtained at different purity levels and it was found that trace impurities do not affect the shape of the curves. The electron temperature was calcu...

Molecular dynamics and DSMC models for energy transfer in argon dimer argon monomer collisions are compared. The inelastic collision number for these collisions is evaluated, and found to decrease significantly when gas temperature increases.

the purpose of this study was to investigate the deposition of the hydroxyapatite (ha) coating via the electrophoresis procedure. the ha deposition was performed in an ethanol, methanol, acetone and isopropanol suspension. methanol was found to be the best deposition media. among the different environmental conditions, including the encapsulation of the samples under two vacuum types of pressur...

purpose: to report a case of hypotonous maculopathy after blunt trauma and its treatment. patient and findings: a 34-year-old woman presented with decreased visual acuity in her left eye following blunt trauma. right eye examination was unremarkable, but visual acuity of left eye was counting fingers. slit lamp biomicroscopy of the left eye was within normal limits, but on funduscopy, papilloma...

the nanoparticles of ti and tio2 have attracted extensive research interest because of their diverse applications in, for instance, catalysis, energy conversion, pigment and cosmetic manufacturing and biomedical engineering. through this project, a one-step bulk synthesis method of electromagnetic levitational gas condensation (elgc) was utilized for the synthesis of monodispersed and crystalli...