Andrew Middleton

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Five groups of rats were treated by inhalation for 12 months, with the U.I.C.C. preparations of the 3 main commercially used asbestos types, chrysotile, crocidolite and amosite. The experiment was designed so that the effects of both fibre mass and fibre number could be examined. The results indicated that chrysotile dust caused far more lung fibrosis than(More)
Rats have been dosed over a 6-week period with U.I.C.C. standard reference samples of amosite, crocidolite and chrysotile A, each at three concentrations: 1,5 and 10 mg/m3. Mass concentrations in the exposure chambers were monitored daily. Because the M.R.E. gravimetric sampler was found to undersample some of these dusts at high concentrations, a sampler(More)
During limited intercarpal fusion it is sometimes difficult to determine correct screw length and staple size. This is because of overlap, and the shape and orientation of the carpal bones on radiography. One hundred complete sets of dry cadaver carpal bones were measured to provide an anatomical database of carpal bone measurements. This should help(More)
OBJECTIVE To investigate foam generation during brushing, and the oral debris and bacteria removal efficacy of an experimental gel-to-foam dentifrice compared to a commercially-available dentifrice after brushing. METHODS Thirty-four subjects participated in this blinded, crossover study. After a wash-out period prior to each session of product use,(More)
Mummification processes in Pharaonic Egypt were successful using sodium salts. Quite frequently sodium concentrations in mummified bones ranged from 300 to 4000 micromol/g. In the search for an effective inorganic conservation compound our choice fell on boric acid. The possible presence of borate in mummification salts used in Pharaonic Egypt was of(More)
INTRODUCTION Ciussi, Rosner, and Augier (2009) in their study of students' interest in using podcasting on their mobile devices identify two myths in the literature: firstly, those students who have grown up with the Internet are uncomfortable with, or unaware of, podcasting; secondly, that the much vaunted idea of " 'learning anytime anywhere'(More)