Chlorophyll biosynthetic heterogeneity is rooted mainly in parallel divinyl (DV) and monovinyl (MV) biosynthetic routes interconnected by 4-vinyl reductases (4VRs) that convert DV tetrapyrroles to MV tetrapyrroles by conversion of the vinyl group at position 4 of the macrocycle to ethyl. What is not clear at this stage is whether the various 4VR activities are catalyzed by one enzyme of broad s...

We report tests of redundant arrays of IDE disk drives for use in offline high energy physics data analysis. Parts costs of total systems using commodity EIDE disks are now at the $4000 per Terabyte level. Disk storage prices have now decreased to the point where they equal the cost per Terabyte of Storage Technology tape silos. The disks, however, offer far better granularity; even small insti...

Hexamethylmelamine (HMM) is metabolized by rat hepatic microsomal preparat ions to reactive species which covalent ly bind to microsomal protein and to calf thymus DNA added to microsomal incubation mixtures. Covalent binding to macromolecules is dependent on the presence of molecular oxygen and reduced nicot inamide adenine dinucleot ide phosphate and is catalyzed by cytochrome P-450 monooxyge...

For over 10 years the Ide test has been in use in Nigeria as a simple slide flocculation test for syphilis and yaws in hospitals and clinics, and in the field, where the Kahn and Wassermann tests are impracticable. It was thought desirable that the results obtained by the Ide test should be compared with those obtained by the newly introduced Harris (VDRL) slide flocculation test, and an estima...

This paper describes first year students’ interest and motivation towards the field of Industrial Design Engineering (IDE) at the University of Twente during three years (2002-2004). Data was gathered systematically based on students’ interest to aspects of IDE: technology, styling, ergonomics and marketing. Students’ arguments were analysed with help of a theoretical framework, based on: 1. a ...

Hexamethylmelamine (HMM) is metabolized by rat hepatic microsomal preparat ions to reactive species which covalent ly bind to microsomal protein and to calf thymus DNA added to microsomal incubation mixtures. Covalent binding to macromolecules is dependent on the presence of molecular oxygen and reduced nicot inamide adenine dinucleot ide phosphate and is catalyzed by cytochrome P-450 monooxyge...

1. Chlorophyll (ide) formation from protochlorophyll (ide) that is normally inactive was demonstrated in etioplast membranes isolated from maize and barlley plants, the process being dependent on intermittent illumination and the addition of NADPH. 2. The addition of NADPH to the membranes was shown to result in the conversion of inactive protochlorophyll (ide) absorbing at about 630 nm into a ...

Human resources development by means of training, education at universities and schools, and skill development within industry projects will be essential to foster product innovation within the African industry. It is expected that investments in Industrial Design Engineering (IDE) through educating engineering students and companies can contribute to the innovation capacity of African industry...

Integrating tools implemented as plug-ins is a complex and time-consuming activity that requires good programming skills and a deep understanding of the underlying plug-in architecture for successful completion. Even when tools are implemented as plug-ins for a same integrated development environment (IDE), users frequently prefer to manually perform the same inefficient operations every time t...