Learn More
Colonies of Damaraland mole-rats Cryptomys damarensis exhibit a high reproductive skew. Typically one female breeds and the others are anovulatory. Two models, the dominant control model (DCM) and the self-restraint model (SRM), have been proposed to account for this reproductive suppression. The DCM proposes that suppression is under the control of the(More)
A rapid capillary electrophoresis separation was developed in order to separate histamine from trypsine. A calibration curve with a determination limit of 1.0 microgram/ml histamine in 1 mg/ml trypsine was obtained. The method is suitable for the detection of small amounts of histamine contamination in trypsine with regard to the standards of the European(More)
A method was developed to quantify the sulphur formed in decomposed sodium thiosulphate injection solutions. Elemental sulphur was extracted with cyclohexane (LLE) and analysed by RP-HPLC. A linear calibration curve with a detection limit of 24 micrograms/ml was obtained. Different amounts of sulphur were detected in extemporaneous and commercial solutions.
  • 1