Heating of mirrors and windows by high-power radiation from a laser transmitter produces turbulent density gradients in the gas near the optical surfaces. If the gradients are left uncontrolled, the resulting phase errors reduce the intensity on the target and degrade the signal returned to a receiver. Beam path conditioning maximizes the efficiency of the optical system by alleviating thermal ...

The purpose of this pilot study was to evaluate periodontal tissue repair after CO2 laser applications in the treatment of severe periodontal defects. Five patients, three men and two women, age range 37 to 55 years, were enrolled. All of the participants in the study were in good general health and presented with at least one tooth with PD of 6 to 9 mm and bleeding on probing. At baseline, all...

statement of problem: considering the cost and amount of time and also the quantity of tooth loss in the process of cavity preparation, repair of the restoration instead of its replacement would be much more efficient. purpose: the aim of this study was to determine the effect of different methods of surface conditioning on the shear bond strength of repaired compomers. materials and methods: s...

From the currently available choices, esthetic restorative materials for posterior teeth are limited to composite and ceramic restoration. Ceramic inlays/onlays are reliable solutions for both of these treatments. For successful treatment planning, usable ceramic and adhesive systems should be chosen by the dentist. Since the Federal Drug Administration approval of the erbium: Yttrium-aluminum-...

144 LLE Review, Volume 67 Over the last four to five years, the Laboratory for Laser Energetics has been in the midst of an Upgrade Project, which has resulted in the new OMEGA inertial confinement fusion (ICF) laser system. The previous OMEGA consisted of a 24-beam laser with its associated controls and diagnostics. Many of the components of the previous system were manually adjusted, and the ...

To simplify and facilitate beating heart (i.e., off-pump), minimally invasive coronary artery bypass surgery, a new coronary anastomotic connector, the Trinity Clip, is developed based on the excimer laser-assisted nonocclusive anastomosis technique. The Trinity Clip connector enables simplified, sutureless, and nonocclusive connection of the graft to the coronary artery, and an excimer laser c...

introduction: allogeneic hematopoietic stem cell transplantation (hsct) has been reported to be a successful curative treatment in aml patients. myeloablative conditioning (mac) is used more frequent as a preparing regimen. this study attempts to compare the outcome of patients who has received mac and reduced- intensity conditioning (ric). methods: totally, 618 patients with aml underwent hsct...