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Initially, the "K" type engine developed in the 1930s were offered in I4, I6, I7 and I8 variants, had 2-valve cylinder heads and ran at 600-680rpm. In 1940, turbocharging became an option, boosting power output by about 61%. Due to the demand of more power, the Mark I "RK" (Revised K) and "V" type were introduced in 1947. The "V" type were ...
Radial keratotomy (RK) is a refractive surgical procedure to correct myopia (nearsightedness). It was developed in 1974 by Svyatoslav Fyodorov , a Russian ophthalmologist . It has been largely supplanted by newer, more accurate operations, such as photorefractive keratectomy , LASIK , Epi-LASIK and the phakic intraocular lens .
RK27xx series - Rockchip was first known for their RK 27xx series that was very efficient at MP3/MP4 decoding and was integrated in many low-cost personal media player (PMP) products. RK28xx series. The RK2806 was targeted at PMPs. The RK2808A is an ARM926EJ-S derivative. Along with the ARM core a DSP coprocessor is included. The native clock ...
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A crossflow head gives better performance than a Reverse-flow cylinder head (though not as good as a uniflow), but the popular explanation put forward for this — that the gases do not have to change direction and hence are moved into and out of the cylinder more efficiently — is a simplification since there is no continuous flow because of valve opening and closing.
The 7S11 sampling unit ($1,780) was intended for a mainframe's vertical axis slot; it would take an S-series head, and that head would determine the bandwidth. The S-1 sampling head ($1,160 in 1983) had a 1 GHz bandwidth; the S-4 sampling head ($2,665) had a 25 ps risetime 12.4 GHz bandwidth traveling-wave sampler.
The RK is a result of a collaboration between German automaker Ruf and Italian carozzeria Studiotorino, [3] the RK Coupe and Spyder are based on the Porsche 987 Cayman and Boxster. The carrozzeria consulted with Aldo Brovarone on the designs, with the RK taking cues from the Ferrari Dino 246 GT, the Porsche 550, and the Porsche 904.
The FDA has granted 510(k) clearance to Abiomed Inc's (NASDAQ: ABMD) Impella Low Profile Sheath. Compared to the existing 14 French (Fr) sheath used for the placement of Impella CP, the new sheath ...