BACKGROUND We evaluated the efficacy of a single-injection technique for percutaneous peribulbar anesthesia with a short needle as an alternative to the double-injection technique for cataract extraction. METHODS We included 200 patients who underwent elective cataract surgery randomized into 2 equal groups. They received either single-injection peribulbar anesthesia with a 16-mm needle or do...

.Measurements o~ the high-frequ~ncy noi:e of a silicon double-injection diode result in (i'l)=a• 4kT ( 1/r) ~if With a= 1.04 and m agreement With the literature. A new interpretation demands Nyquist noise with a 121 in these devices at high frequencies. This is in accord with an equivalent circuit derived for the doubleinjection process. Speculations are made on the general validity of Nyquist ...

conventional compression ignition (ci) engines are known for their high thermal efficiency compared to spark ignited (si) engines. gasoline because of its higher ignition delay has much lower soot emission in comparison with diesel fuel. using double injection strategy reduces the maximum heat release rate that leads to nox emission reduction. in this paper, a numerical study of a gasoline fuel...