activation at near-optimal levels through planned stimulus change, then the theory can contribute substantially to increasing the usefulness of job rotation as a motivational technique. If, however, it turns out that there are general and inevitable decreases in activation over time regardless of how

Abstract. Gelatinous zooplankton are the least under-stood of all planktonic animal groups. This is partly due to their fragility, which typically precludes the capture of intact specimens with nets or trawls. Specialized tools and techniques have been developed that allow researchers and aquarists

Currently controversial questions include: what is the optimal volume of blood for culture and which blood culture system is most suitable for the rapid and reliable detection of important pathogens? The author has discussed these topics and recommends the following: (1) At least 10 ml blood should

Lesquerella [Lesquerella fendleri (Gray) Wats., Brassicaceae], is a potential new oilseed crop, producing an unsaturated, hydroxy fatty acid (lesquerolic acid, C20:1-OH) with properties similar to imported castor oil (Dierig et al. 1993). The cultivated L. fendleri has demonstrated a narrow range of genetic variation determin-

Focusing on a subject the author has extensively engaged with over the years (most notably in his 2010 study Der Diener), the article develops the notion of service as a cultural technique, and the media-theoretical figure of the servant as its servomech-anism. The analysis follows three distinct

laboratories and PCR requires expertise with advanced infrastructure and has sensitivity of only around 60 % under optimal conditions. Neither technique allows for the microbiological isolation of M. tuberculosis and subsequent drug susceptibility testing. We evaluated the recently developed microscopic

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Methods of plant tissue culture techniques applied in buckwheat are briefly summarized under paragraphs of micropropagation, callus culture and organogenesis, genetic transfonnation, interspecific hybridization, protoplast culture and haploidy induction by anther and ovule culture. In the last