Mathematical principles of cell division

The report given here is an attempt of the mathematical formulations to solve a problem concerning cell division and the control of mass and volume of the nucleus and cytoplasm. The study of the interaction forces on the nucleus and the vibrational frequencies during cell division are analyzed in detail. Lastly, the vibrations of a cell and the coalescence of the vacuoles inside a living plant cell are discussed theoretically.

Degradation of organic nitrogenous wastes by a soil streptomycete

A soil streptomycete degraded hair, silk, wool, feather and leather which were collected from solid wastes. The organism was identified taxonomically and designated Streptomyces sp. A956. It degraded leather to the maximum extent and solubilized 35.9% of the total nitrogen, 2.32 mg of glycine equivalent amino nitrogen could be obtained by degradation of 100 mg leather.

Doxycycline in the treatment of cholera

Doxycycline was compared with tetracycline in the treatment of cholera. Four types of treatment were compared: Group A was given 200 mg of doxycycline on admission and 100 mg on the second day; Group B was given 200 mg of doxycycline on admission only; Group C was given 300 mg of doxycycline on admission only; and Group D received 500 mg of tetracycline every 6 h for 48 h. Tetracycline showed a slight advantage in respect of duration of diarrhoea and vibrio excretion compared with doxycycline given as a single dose of 300 mg, but fluid intake and output were about the same in these two groups. The other two doxycycline treatment schedules did not compare well with tetracycline treatment.