Double window

Fig. 5 shows a schematic representation of an accelerator and a reaction chamber. Double windows are usually used to separate the accelerator and the chamber. The primary window keeps the accelerator in vacuum therefore the window material must have enough strength to bear the pressure difference of more than 1 atm. The secondary window prevents the primary window from flue gas in which acidic chemical components are produced during... 

You see smoke and fire issuing from a double window in the apartment as you approach the building. In which room is the fire located ... 

Double window cell rotated or agitated (after 1960)... 

For double window glazing, only the interior glazing is required to meet the requirements specified herein. (The exterior glazing is not required to meet these requirements.)... 

Since both the vacuum isolation foil and the target backing foil must hold a pressure difference of greater than 1 bar, relatively thick metal foils, such as 2.5 mg/cm2 Be or 1.8 mg/cm2 HAVAR, have been used. These thick foils are especially attractive when considering the mechanical stability of extremely radioactive actinide targets. Variations on the double-window target system have traditionally been used for heavy element production with actinide target materials. 

IR spectra were recorded on a Pcrkin-Elmer FT-IR spectrometer of double window type and with resolution of 4 cm L In-situ IR cells suitable to the chamber were made of quartz. Cap2 windows. The gas pressure in the cell could be varied from 0.1 MPa to L3 mPa. Room temperature CO adsorption was used as a molecular probe. XPS XRD, and TPR measurements were implemented as described in refs. 9 and 10. 

The schematic setup of a diffuse reflectance spectrometer which is obtained by supplying a normal UV-VIS spectrometer with a diffuse reflectance accessory is shown in Fig. 18. The core is an integrating sphere coated with a highly reflective material that collects the scattered radiation and leads it to the detector. The light remitted by the sample is compared with that of a white standard as the reference. Zeolite layers of ca. 5 mm depth are generally sufficient to meet the condition of infinite thickness. A typical sample cell furnished with an evacuated Infrasil double window and designed for temperature control and evacuation is depicted in the lower part of Fig. 18 [32]. Other cell constructions have been reported by Klier [31] and Schoonheydt [34]. 

The dynamic runs of the actual window and seals were made in an apparatus shown in Fig. 4. With this apparatus, both parts of the double window seals remained tight throughout. At nitrogen temperature, the expander was pulsed for a total of 2 million pulses during several separate cool-downs. On only one occasion was there a small leak in one of the seals during this series of tests. 

Brereton, R. G. and Elbergali, A. K. (1994) Use of double windowing, variable selection, variable ranking and resolvability indices in window factor analysis. Journal of Chemometrics, 8, 423-37. 

Natural convection in enclosed spaces. Free convection in enclosed spaces occurs in a number of processing applications. One example is in an enclosed double window in which two layers of glass are separated by a layer of air for energy conservation. The flow phenomena inside these enclosed spaces are complex since a number of diflerent types of flow patterns can occur. At low Grashof numbers the heat transfer is mainly by conduction across the fluid layer. As the Grashof number is increased, different flow regimes are encountered. 

Heat Loss Through Thermopane Double Window. A double window called... 

Effect of Convective Coefficients on Heat Loss in Double Window. Repeat... 

Problem 4.3-3 for heat loss in the double window. However, include a convective coefficient of Ai = 11.35 W/m K on the one outside surface of one side of the window and an h of 11.35 on the other outside surface. Also calculate the overall U. 

His research programme was really launched in 1949 with two projects. One was on the colligative properties of non-aqueous solutions (carboxylic acids in benzene) with pressure and temperature as variables. The other was the seed corn for studies of fast reactions. Acid-base reactions involving a coloured reactant or product were followed by measuring the time-dependence of the UV spectrum of the mixture. In order to slow down the reaction, measurements were made at around 193 K. The reactors used were of 0.5 to 1.0 litre capacity with 10 cm vacuum-sealed double windows to prevent misting. So began Ted s magnum opus. 

Double-window systems and forced gas cooling. The double-window target system has been developed [39] for use with targets on relatively thick backing foils see Fig. 3. In the double-window system, a vacuum isolation foil is placed... 

Fig. 3 Double-window target system with forced gas cooling for stationary targets. Reaction products are recoiling form the target and stopped in a volume flushed with an aerosol e.g., He/KCl...

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