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A quick HPLC method is reported for the analysis of polysorbate 80 in pharmaceutical suspensions. A typical pharmaceutical suspension was mixed with dilute potassium hydroxide, and heated at 40 degrees C for 6 h. This procedure resulted in quantitative hydrolysis of polysorbate 80 to release oleic acid. A quick HPLC procedure was used to analyze the(More)
Objective. Wear of the polyethylene insert is a well-recognised cause of implant failure in total knee replacements. The purpose of this study was to evaluate a simple, digital fluoroscopic technique for the assessment of wear in knee prostheses. Design.Fluoroscopic images of knee prostheses were produced both of a phantom and in a patient group. Joint(More)
A major achievement of the past decade has been the realization of macroscopic quantum systems by exploiting the interactions between optical cavities and mechanical resonators. In these systems, phonons are coherently annihilated or created in exchange for photons. Similar phenomena have recently been observed through phonon-cavity coupling-energy exchange(More)
Based on theoretical analysis, the strain characteristics of electroactive acrylic elastomer was studied by experiments. In the experiments, the electroactive acrylic elastomer was realised with a biaxial pre-stretched circular film coated with two compliant electrodes of graphite powder or conductive adhesive. Electroactive strain values were measured for(More)
Product recalls involving global supply chains provide managers an opportunity to attribute blame to foreign suppliers, and thus decrease compensation offered to consumers. In this paper, we examine the factors that determine the compensation firms offer to customers, when recalling products. Drawing on attribution theory, we argue that companies avoid(More)
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