This paper presents an algorithm to average a set of quaternion observations. The average quaternion is determined by minimizing the weighted sum of the squared Frobenius norms of the corresponding attitude matrix differences, subject to the unit-norm constraint in the determined solution. Two cases are presented: one that incorporates scalar weights and one that incorporates general weights on...

Recurrent prostate cancer presents a challenge to conventional treatment, particularly so to address micrometastatic and small-volume disease. Use of α-radionuclide therapy is considered as a highly effective treatment in such applications due to the shorter range and exquisite cytotoxicity of α-particles as compared with β-particles. (213)Bi is considered an α-emitter with high clinical potent...

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The use of the epipodophyllotoxin VP 16-213 is described in twenty patients with acute myelogenous leukaemia resistant to other chemotherapy. The drug was usually given in 5-day courses of 50 mg/M2 daily and occasionally in 24-hr infusions of 250 mg/M2, on the basis of its phase-activity. Complete remission was achieved in only two patients: in one of these, remission was maintained with VP 16-...

Th e purpose of this paper was to develop a typology for winter sports tourists deriving from the behavioural characteristics of British skiers and snowboarders. Th e paper also aimed to ascertain whether diff erences in the characteristics and behaviour of skiers and snowboarders were identifi able, and consequently whether the market could be meaningfully segmented based upon the sport partic...

PURPOSE To explore the tissue ablation properties of pulsed 266-nm and 213-nm laser radiation in porcine retina and the potential for 213-nm laser radiation to cut through human trabecular meshwork. METHODS Segments of porcine retinas were used, and localized areas of tissue were exposed to 266-nm or 213-nm laser. Human trabecular meshwork from donor eyes was also ablated using pulsed 213-nm ...

Enteropatogenic Escherichia coli (EPEC) and shigatoxigenic E. (STEC), are generally poultry product isolate can cause serious human infections. Many strains may become resistant to various antimicrobials, which hinder the treatment of bacterial diseases. Organic farming seeks avoid selection frequency antimicrobial-resistant bacteria. This study aims verify resistance EPEC STEC from organic con...

BACKGROUND AND PURPOSE Developmental switches in NMDA receptor subunit expression have been inferred from studies of GluN2 expression levels, changes in kinetics of glutamatergic synaptic currents and sensitivity of NMDA receptor-mediated currents to selective GluN2B antagonists. Here we use TCN 213, a novel GluN2A-selective antagonist to identify the presence of this subunit in functional NMDA...