نتایج جستجو برای: helically corrugated tubes

تعداد نتایج: 30790  

Journal: :Transactions of the Japan Society of Mechanical Engineers 1970

2015
A Ram Doo Sang-Kyi Lee

dotracheal tube and are composed of inspiratory and expiratory corrugated limbs. The two breathing tubes carry respiratory gases with volatile anesthetics to and from patients during general anesthesia. Although longer corrugated breathing tubes allow the anesthesia machine to be located farther from the patients, they are so long and flexible that they tend to hang down below the operating tab...

Journal: :International Journal of Heat and Mass Transfer 2019

Journal: :The Journal of Cell Biology 1971
I. Friedberg I. Goldberg I. Ohad

The prolamellar body (PLB) appears in the etioplasts of dark-grown higher plants (3, 16, 18, 21). I t has a well-defined structure consisting of a central core built of an array of interconnected tubules, from which peripheral tubular elements extend into the plastid matrix. The tubular elements of the central core can be arranged in a crystalline (3, 7) or random pattern (19). The peripheral e...

Journal: :IEEE Transactions on Electron Devices 2022

The design, simulation, manufacture, and measurement of a W-band fivefold (5F) helically corrugated waveguide (HCW) is reported. 5F HCW based on the coupling traveling TE₃₁ near cutoff TE₂₁ modes to create an operating eigenwave. fabricated test structure has circular ports features elliptical polarizer sections broadband TE₁₁ mode converters either side HCW. optimized converter fourfold (4F) H...

Journal: :Thermal science and engineering progress 2021

Current research focuses on the performance of helically coiled tubes as a passive heat transfer enhancement technique for R134a flow condensation from an entropy generation perspective. Similar to other techniques, helical coils, are accompanied by pressure drop penalty, diminishing their performance, so that these coils lower compared straight where increase in due overcomes decrease enhanced...

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