… *RG Livesey's contribution to this work was made during a six-month period of ining at the
Shirley Institute when a ^Sandwich Course' student at Brunei College ot traming Technology. …

There have been many reports concerning the influence of chamber pressure on primary
drying times and sublimation rates of freeze-dried materials. However, there is disagreement …

The nature of gas flow in pipes and ducts changes with the gas pressure and its description
is generally divided into three parts or regimes. The flow dynamics are characterized by A, …

In vacuum technology it is frequently necessary to calculate gas flows over a wide range of
pressures and flow conditions. Ideally, it is desirable to be able to conduct calculations for …

Useful approaches to the calculation of gas flows in the molecular–continuum transition region
have been presented by a number of authors. However they are restricted in application …

Claw rotor compressors are used in a wide variety of vacuum pumping applications.
However, the published literature on these machines offers little guidance on the physical …

The goal of a single (dry) pump capable of reaching high vacuum and itself exhausting to
atmospheric pressure has long existed in the vacuum field. The development of a single-shaft, …

Useful data on the backstreaming of vapors from oil sealed rotary pumps have been obtained
by a number of workers using quartz‐crystal microbalance techniques. The interpretation …

A method is described for depositing transparent, electrically conducting films of tin oxide on
Pyrex and soda lime glass substrates. The technique used was that of passing the vapour …

A method and apparatus are described for testing materials in woven, knitted, or sheet form
for liability to static trouble. The method enables simultaneous but independent …