Characteristics of a magnetically shielded cylinder for vacuum gauges.

Theta Vacuum in Different Gauges

Theta Vacuum in Different Gauges

Theta vacuum in different gauges

In some recent papers it is claimed that the physical significance of the vacuum angle theta for QCD-like theories depends on the chosen gauge condition. We criticise the arguments that were given in support of this claim, and show by explicit construction for the case of QED 2 that and why they fail, confirming thereby the commonly accepted point of view.

New Six-Layer Magnetically-Shielded Room for MEG

A high performance magnetically-shielded room (MSR) has been built by Imedco, to house a 4-D MEG system, containing both gradiometers and magnetometers (Vectorview). The MSR consists of three nested enclosures, each consisting of a high-permeability magnetic layer plus an aluminum layer, where special care was given to the junctions of the inner aluminum layer. Measurements of the passive shiel...

Vacuum Drying Characteristics of Some Vegetables

In this research the drying of four kinds of vegetables was investigated in a vacuum dryer. The effect of temperature on drying rate of samples at various temperatures (30, 35 and 45 °C) was studied. Six thin-layer drying models were fitted to drying data and suitable model was selected from them. Then effective moisture diffusivity and ...