Wein bridge

Like the Wein-bridge oscillator, the Schmitt trigger only needs a power supply of 5 to 15V to begin its oscillation. This entails that the maximum lead that the clock pulse can drive is in the 1 mA range. The oscillation is controlled by the RC time constant and the hysteretic native to the Schmitt trigger. 

It follows that as the capacity (C) is directly proportional to the dielectric constant of the material between its plates, then the electrical impedance of the cell will vary inversely as the dielectric constant. The most appropriate circuit to use in dielectric constant measurement is an appropriate electrical "bridge", the detector cell being situated in one arm of the bridge. If the cell can be designed to have a capacity greater than 100 pF, then a Wein bridge can be used however such a... 

In silico models of anthrax release can be used to bridge the gap to help predict consequences of human exposure in the event of an outbreak or biological attack scenario. Several modeling studies have been pubhshed (Wein et al,... 

Gosling J (1999) Gross anatomy of the lower urinary tract. In Abrams P, Khoury S, Wein AJ (eds) Incontinence. Plym-bridge Distributors Ltd, Plymouth, pp 21-56... 

Weins, W. N. (1991). First hot dip galvanized bridge beats corrosion. Reprint from Roads and Bridges (Nov.) 3 pp., AGA. 

In silico models of anthrax release can be used to bridge the gap to help predict consequences of human exposure in the event of an outbreak or biological attack scenario. Several modeling studies have been published (Wein et al., 2003) in attempts to assess anthrax risk. The model of Wein et al. (2003) assumes a point-release of 1 kg of spores at a height of 100 m over a city of 10 million inhabitants. The effects on mortality of different antibiotic treatment strategies in an urbanized anthrax release are examined. This in silico biological weapon attack results in more than 100,000 deaths, given that both symptomatic and as)miptomatic persons receive antibiotics and the model incorporates availability and distribution parameters. In the base case, an approximation of... 

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