Rev Prof D. W. D. Shaw OBE (1928–2020)

Quinacrine Rev&d

Quinacrine (Atebrine, mepacrine) is an a&dine derivate described in 1932 by Schulemann for the treatment of malaria (Samuelsson and Goldyne, 1978). It was discovered in an intensive research programme on synthetic antimalarials carried out in the third decade of this century in the German laboratories of I.G. Farbenindustrie. The programme covered the preparation and trial of over 12 000 compou...

W. R. D. Fairbairn

Witamina D w chorobach alergicznych Vitamin D in allergic disorders

Vitamin D is a factor that plays a significant role in calcium-phosphate balance. It has an effect on bone metabolism and also has modulator and anti-inflammatory activity. It is claimed that vitamin D inhibits immunological reactions with Th1 and Th17 lymphocytes. The influence of vitamin D on Th2 lymphocytes is not clear. The main effect of vitamin D is probably the activation of Treg lymphoc...

Dynamic Tests For A/D Converter Performance (Rev. A)

This article describes useful theory and techniques for evaluating the dynamic performance of A/D converters. Four techniques are discussed: (1) beat frequency, (2) histogram analysis, (3) sine wave curve fitting, and (4) discrete finite Fourier transform.

F . Pfeiffer , Ulm W . D . Hetzel , Ulm