Thermoacoustic-Stirling hybrid engines and feedback pulse tube refrigerators can utilize jet pumps to suppress streaming that would otherwise cause large heat leaks and reduced efficiency. It is desirable to use jet pumps to suppress streaming because they do not introduce moving parts such as bellows or membranes. In most cases, this form of streaming suppression works reliably. However, in so...

In the second half of 2007 a major upgrade has been implemented on the Frascati DA NE collider in order to test the novel idea of Crab-Waist collisions. New vacuum chambers and permanent quadrupole magnets have been designed, built and installed to realize the new configuration. At the same time the performances of relevant hardware components, such as fast injection kickers and shielded bellow...

It is well known that the incorporation of wetting agents in drug solutions for local application enhances the penetration of the drug into the tissues (McKee et al., 1943; Bellows and Gutman, 1943; Trim and Alexander, 1946). Ginsburg and Robson (1945) have shown that when dodecyl sodium sulphate is incorporated in solutions of sodium sulphacetamide applied to the cornea, the increase in penetr...

Background Respiratory motion compensation is essential for reproducible and robust cardiovascular MRI. Traditionally, breathholds or prospective gating by bellows or navigator signals limit data acquisition to the quiescent phase of respiration [1]. These approaches do not capture any variations of blood flow over the respiratory cycle, yet respiration has been shown to significantly affect fl...

The“Laptop Accordion”co-opts the commodity laptop computer to craft an expressive, whimsical accordion-like instrument. It utilizes the opening and closing of the laptop screen as a physical metaphor for accordion bellows, and the laptop keyboard as a musical buttonboard. Motion is tracked using the laptop camera via optical flow and mapped to continuous control over dynamics, while the sound i...

SINCE the first reports of spontaneous rupture of the lens capsule by Ulrich (1882) and Szily (1884), further cases have been reported by Rollet and Genet (1913), Gonzalez (1919), Kaufman (1933), Knapp (1937), Box (1941), Sugar (1949), and Bonavolonta (1950). Rupture of the lens capsule also occurs in anterior lenticonus (Ehrlich, 1946), and after trauma (Bellows, 1944). The purpose of this pap...

In this research, the nickel oxide was dissolved in cryolite at temperatures of 880, 940 and 1000°C. In order to reduce the nickel oxide, aluminum was added to the salt. Simultaneously the nickel oxide was reduced and Al3Ni2 intermetallic compound was formed. In the duration intervals of 2.5-40 minutes samples of the salt and metallic phases were taken. The variation of the nickel content in me...