A molecular model for carbon dioxide is presented, and the parameters of the Lennard-Jones sites, the bond length, and the quadrupole moment are optimized to experimental vapor-liquid equilibrium data. The resulting molecular model shows mean unsigned deviations to the experiment over the whole temperature range from triple point to critical point of 0.4% in saturated liquid density, 1.8% in va...

zinc (ⅱ) tricarboxylate (zn-btc) with metal-organic framework (mof) has been synthesized for the first time under solvothermal conditions and has been tested as an adsorbent for methane and carbon dioxide at standard temperature and pressure. the adsorbent was characterized by means of x-ray diffraction(xrd), brunauer-emmet-teller (bet), fourier transform infrared (ft-ir) and scanning electron ...

introduction: the aim of this study was to evaluate and compare the scanning electron microscope (sem) of indirect composite conditioned by erbium-doped yttrium aluminum garnet (er:yag) laser, neodymium-doped yttrium aluminium garnet (nd:yag) laserand carbon dioxide (co2) laser. methods: 18 indirect composite blocks (gc gradia da2, japan) with 15 × 10 × 10 mm dimensions were made. the bonding s...

Background: Poisoning with carbon monoxide occurs occasionally worldwide, and the gold diagnostic standard is to measure carboxyhemoglobin level in the blood. This study investigated the correlation between carboxyhemoglobin and the end-tidal carbon dioxide levels in 50 patients with carbon monoxide poisoning. Methods: We recruited 50 volunteer patients who had been admitted to the Emergency S...

introduction: the use of lasers for treatment has become a common phenomenon in the medical field. currently, numerous laser systems are available for dental use. the use of lasers for periodontal treatment becomes more complicated because the periodontium consists of both hard and soft tissues. methods: related articles were gathered and selected carefully and reviewed. among the many lasers a...

IMPORTANCE Despite the advantages and reduced recovery time of ablative fractional photothermolysis, patients still seek adjuvant treatments to reduce healing time and facilitate their return to normal social and work activity. Platelet-rich plasma (PRP) has been used for many applications in various surgical fields for its ability to improve wound healing, hemostasis, and graft survival. OBJ...

introduction: the purpose of this study was to investigate the effect of 6w power carbon dioxide laser (co2) on the biologic compatibility of the sandblasting with large grit and acid etching (sla) titanium discs through studying of the sarcoma osteogenic (saos-2) human osteoblast-like cells viability. methods: sterilized titanium discs were used together with saos-2 human osteoblast-like cells...

Type Device Wavelength (nm) Band Helium-Neon Tank, gunnery trainer 642.8 Visible (red) Ruby Rangefinder 694.3 Visible (red) Gallium-Arsenide MILES 905.0 Near-infrared Nd:YAG Rangefinder, target designator 1,064.0 Near-infrared Carbon Dioxide Rangefinder 10,600.0 Far-infrared MILES: multiple integrated laser engagement system Nd:YAG: neodymium:yttrium-aluminum-garnet Adapted from Headquarters, D...

A patient with Wegener's granulomatosis rapidly developed a circumferential subglottic stenosis while on a cyclophosphamide regimen that had caused resolution of systemic symptoms and pulmonary infiltrates. The stenosis developed in the area of previously noted tracheal ulceration and responded satisfactorily to carbon dioxide laser therapy.

OBJECTIVES We evaluated cross-linked hyaluronic acid (hylan B gel) as a scaffold for tissue regeneration and mucosal wave restoration in carbon dioxide laser-ablated canine vocal folds. METHODS Five beagles underwent stroboscopy before ablation of the left vocal fold with a carbon dioxide laser. Four weeks later, stroboscopy was repeated before and after submucosal injection of hylan B gel in...