Subjective estimates of the angiographic severity of coronary artery stenoses show variability and inaccuracy. We therefore tested the accuracy of a newly developed computerized image analysis system for quantitating vessel diameter from cineangiograms. Fourteen cylindrical phantoms of known diameter were filled with contrast medium and filmed over a wide range of clinically relevant radiograph...

BACKGROUND Foremost fine hairs in the frontal hairline region are critical in hair transplantation for hairline correction (HTHC) in women. However, there are few studies on a nonsurgical revisionary method for improving an unnatural foremost hairline with thick donor hairs resulting from a previous HTHC. OBJECTIVE To investigate the efficacy and safety of using a hair removal laser (HRL) sys...

The effects of solar spectral irradiance on the performance laser spot tracker are analyzed. When entrance pupil diameter receiver increases, field view decreases, but detection range increases. If angle between and transmitter target increases from 0 deg to 60 deg, decreases by approximately 23%. Due noise’s caused irradiance, 33% during day, more than night, tracker’s altitude 13% at 2000 m, ...

The hydrogen-rich gas produced in-situ by methanol steam reforming (MSR) reactions significantly affects the performance and endurance of high-temperature polymer electrolyte membrane (HT-PEM) fuel cell stack. A numerical study MSR over a commercial CuO/ZnO/Al2O3 catalyst coupling with heat mass transfer phenomena in co-current packed-bed reactor is conducted. simulation results 1D 2D pseudo-ho...

A miniaturized probe that possesses a diameter of 0.4 mm is developed for two-photon-excited fluorescence imaging. The miniaturized probe was manufactured by the collapse of air holes and the formation of a lens on the tip of a double-clad photonic crystal fiber (DCPCF) using electric arc discharging from a conventional fusion splicer. As a result, a femtosecond pulsed laser beam delivered by t...

Confinement of light inside an active medium cavity can amplify emission. Whispering gallery mode (WGM) is one of mechanisms that amplifies light effectively by confining it inside high-refractive-index microstructures, where light propagates along the circumference of a sphere via total internal reflection. Here we show that isolated single microspheres of 2-10 μm diameter, formed from self-as...

A new method for quantitative determination of galactose in blood by fluorescence of NADH was described. The assay system consisted of beta-galactose dehydrogenase, NAD, buffer and a denatured blood disc (3 mm diameter), and the reaction was carried out for 1 hr at 37 degrees C. Denaturation of hemoglobin was accomplished by exposing the blood disc to a vapor of formic acid in an air-tight cont...

The results of Monte Carlo calculated dose distributions of proton treatment of ocular melanoma are presented. An efficient spot scanning method utilizing active energy modulation, which also minimizes the number of target spots was developed. We simulated various parameter values for the particle energy spread and the pencil beam diameter in order to determine values suitable for medical treat...