The Photoelectric Determination of Indole in Bacterial Cultures

The Photoelectric Determination of Indole in Bacterial Cultures.

Many colorimetric tests for indole have been described since Gnezda (1899) first described the oxalic acid test. These have been ably discussed and compared by Fellers and Clough in 1925, together with a very complete bibliography. They concluded, as a result of comparative studies, that the Ehrlich test (1901) was the most accurate, reliable and simple for indole and skatole when unmixed. The ...

The quantitative determination of indole in bacterial cultures.

The Determination of Histamine in Bacterial Cultures.

determination of maximal singularity free zones in the workspace of parallel manipulator

due to the limiting workspace of parallel manipulator and regarding to finding the trajectory planning of singularity free at workspace is difficult, so finding a best solution that can develop a technique to determine the singularity-free zones in the workspace of parallel manipulators is highly important. in this thesis a simple and new technique are presented to determine the maximal singula...

The Photoelectric Effect: Determination of Planck’s Constant

We test Einstein’s theory of the photoelectric effect, which predicts a linear relation between the energy of light incident on a metal surface and the energy of the emitted electrons. We determine the electron stopping voltage as a function of frequency of incident radiation by illuminating a potassium cathode and constraining the wavelength of incident radiation using several optical band-pas...