Crowding, chamber

The gassing takes place as follows The victims are brought into Hall B, where they are told to undress. To complete the fiction that they are going to bathe, each person receives a towel and a small piece of soap issued by two men clad in white coats. Then they are crowded into the gas chambers in such numbers that there is only standing room. To compress this crowd into the narrow space, shots are often... 

The animals should be tested with inhalation equipment designed to sustain a dynamic air flow of 12 to 15 air changes per hour, and to ensure an adequate oxygen content of 19% and an evenly distributed atmosphere. Whenever a chamber is used, its design should minimize crowding of test animals and maximize their exposure to the chemical. As a general rule, to ensure stability of the chamber atmosphere, the total volume of the test animals should not exceed 5% of the test chamber volume. Alternatively, oronasal, head only, or whole-body individual exposure chambers may be used. 

What time would have been required to ventilate the facilities crowded with bodies or were the clean-up operations attested to in the chambers possible 132... 

It is physically impossible to crowd 700 to 800 people into a space of only 25 square meters, i.e., 28 to 32 people per square meter.20 According to Gerstein, it was not a peephole through which Professor Pfannenstiel supposedly looked into the gas chamber - it was a window in a wooden door, and not a gas-tight, panic-proof steel door as one might expect. Supposedly, there were wooden doors on two sides of at least one of the gas chambers. We are told that the intended victims were still alive after almost three hours in the gas chambers before the Diesel even started, so there must have been many air leaks into the chambers or else the Jews would have been asphyxiated without the aid of any Diesel. 

V. R. Vemuri and W. Cedeno, in Genetie Algorithms and Applications, L. Chambers, Ed., CRC Press, Boca Raton, Florida, 1995, Vol. 2, pp. 5-29. Multi-Niche Crowding for Multimodal Search. 

Pressure is easily, and almost immediately, modified and controlled in a crowded work chamber through movement ofvapor — by removal of it into a vacuum pump or addition of it via a pump or other device. As long as all volumes of the chamber are in fluidic communication with one another, all of the chamber contents are at the same pressure. That s what is meant by homogeneous. 

The position of the pumping intakes is important to obtaining a uniform gas distribution in the processing chamber. At pressures above a few mTorr, the chamber volume in front of the pump intake can have an appreciably lower pressure than elsewhere in the chamber. This is particularly true if the chamber is crowded with fixtures and the gas inlet system is not properly designed. These pressure differentials can affect the deposition process. 

A useful concept is that of transit conductance, which is a measure of the time it takes to get a specific molecule from one place to another. In mass flow control, the adsorption-desorption mechanism may delay the effect of changes in the MFC as a function of position, particularly if the chamber is crowded. ... 

Crowding (vacuum technology) When there is so much fixturing in the chamber that the conductance, particularly for water vapor, is reduced to the point that concentration gradients are established in the chamber. 

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