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Looks at the Dolgellau gold belt in Wales, discusses the geological conditions which have produced gold deposits, examines different methods of extraction and looks at some commercial operators.
Explains why attempting to detect the presence of protein samples directly from an electrophoresis gel is impractical, due to diffusion of the protein bends over time and the fragility of the gel itself....
Following a real-life example of an infant being prescribed oral rehydration therapy, shows how the treatment with a sugar-salt-water mixture works. Examines the structure of thr enterocyte, its two...
Describes how lymphocytes in the bloodstream of an animal will respond to the appearance of an antigen by producing antibodies to it. Explains the difference between monoclonal and polyclonal antibodies....
Twelve practical organic chemistry techniques such as distillation, recrystallisation and calculation of percentage yield. The tape is designed to acompany ORGANIC CHEMISTRY PREPARATIONS, but can stand alone.
Illustrates the modified Bailenger method for estimating the numbers of intestinal nematode eggs in waste water and MPN method for estimating the numbers of faecal coliform bacteria in wastewater.
An introduction to videoconferencing with some suggestions for effective use of the technology.
With the help of a number of experienced breast-feeding mothers and their babies, discusses and illustrates the advantages of breast feeding for both mother and baby, the range of normal feeding patterns,...
Victims and perpetrators discuss bullying - the reasons, the responses, the reaction of parents, and whether bullying is inevitable. The children come from a cross-section of schools and social backgrounds.
Presents the basics of the Casio FX-7700 (fx-7700GE and fx-7700GH) range of graphic calculators so that teachers and students can use them to experiment and explore a wide range of mathematical problems....
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