Tot Of Tot En Met

Biological Rhythms

(Chapters 11 to 14) summarise important features of the biological clock at the level of whole animal covering all vertebrate classes (fish to mammal). Chapters 15 and 16 are on long term (seasonal) rhythms in plants and higher vertebrates. Short term rhythms (ultradian rhythms), the significance of having a clock system in animals living in extreme (arctic) environments, and the diversity of circadian responses to melatonin, the key endocrine element involved in regulation of biological rhythms, have been discussed in Chapters 17 to 19. Finally, a chapter on sensitivity to light of the photoperiodic clock is added which, using vertebrate examples, illustrates the importance of wavelength and intensity of light on circadian and non-circadian functions. A well-known expert writes each chapter. When presenting information, the text provides consistent thematic coverage and feeling for the methods of investigation. Reference citation within the body of the text adequately reflects the literature as subject is developed. A chapter begins with an abstract that enables a reader to know at the first glance the important points covered in that chapter. The chapter concludes with a full citation of references included in the text, which could be useful for further reading. The book ends with a comprehensive subject index that may be useful for quick searches.

A Complete English Grammar ...

Die verhaal van die Griekse Taal oor 35 Eeue heen

Vir die eerste keer in Afrikaans (die jongste Westerse taal wat in die afgelope eeu reeds sy eie unieke letterkunde geskep het) word die verhaal van Grieks vertel, die oudste Westerse taal waarin feitlik al die bekende literere genres hul weergalose vorm en gestalte gekry het. Hoewel hierdie publikasie basies linguisties van aard is, poog die skrywer om die dramatis personae self ook aan die woord te stel in plaas van om net in taalkundige jargon te verval. Om 'n werk soos hierdie saam te stel, vereis kundigheid in verskeie vaksubgebiede wat begin by oer-Grieks in sy sillabiese lynskriffases A en B. Die Grieks van die Goue Era van Perikles se Athene (circa 500 v.C.) is die bekendste. Min mense besef egter dat Homeros bedrieglik pre-klassiek is. Die klassieke Griek kon sy twee groot eposse (die Ilias en die Odusseia) nie sonder meer vlot lees nie. Dit was hulle Chaucer en Shakespeare. Die Griekse NT is sekerlik die belangrikste dokument wat ooit in Grieks opgestel is, hoewel dit stilisties nie naastenby die beste is nie. Vir sy bespreking van veral die semantiek van Moderne Grieks gebruik die skrywer hier vir die eerste keer dr. Philip Nicolaides se uitvoerige Grieks-Afrikaanse Woordeboek van 843 foliogrootte bladsye. Dis teen die middel van die vorige eeu opgestel, maar is nooit gepubliseer nie. Gerrit Kruger besit vandag die enigste (oorspronklike) kopie daarvan.