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Polyhydroxyalkanoates (PHAs) are biopolymers, which can replace petrochemical plastics in many applications. However, these bioplastics are currently far more expensive than petrochemical plastics. Many researchers are investigating the use of inexpensive substrates derived from waste streams. Waste frying oil is abundant and can be used in PHA production(More)
This article presents an account of the evolutionary changes in occupational therapy graduate education at the University of Southern California (USC) in response to the increasing professional demands and the expanding knowledge base of the field. The contention that undergraduate and graduate education represented by these changes would result in(More)
A 14-page comprehensive survey was mailed to all 565 United States members of the American Association of Zoo Veterinarians to identify the frequency of physical injuries, radiation exposures, chemical exposures, allergic or irritant reactions, infections, and use of preventive measures, and 315 (55.8%) veterinarians responded. Significant findings include(More)
Poly-γ-glutamic acid (γ-PGA) is a naturally occurring biopolymer made up of repeating units of l-glutamic acid, d-glutamic acid or both. γ-PGA can exhibit different properties (conformational states, enantiomeric properties and molecular mass). Owing to its biodegradable, non-toxic and non-immunogenic properties, it has been used successfully in the food,(More)
This paper presents a hybrid finite-difference/weighted essentially non-oscillatory (WENO) method for large-eddy simulation of compressible flows with low-numerical dissipation schemes and structured adaptive mesh refinement (SAMR). A conservative flux-based approach is described, encompassing the cases of scheme alternation and internal mesh interfaces(More)
It is common practice to freeze dry probiotic bacteria to improve their shelf life. However, the freeze drying process itself can be detrimental to their viability. The viability of probiotics could be maintained if they are administered within a microbially produced biodegradable polymer - poly-γ-glutamic acid (γ-PGA) - matrix. Although the antifreeze(More)
A pre-test/post-test design was used to study the learning style preferences of two classes of occupational therapy students of the University of Southern California. Forty students were in the 1976-1977 class and 49 in the 1977-1978 class. The Learning Preferences Inventory was administered before and after completion of courses in the basic professional(More)