Alzheimer disease (AD) primarily affects older adults. This neurodegenerative disorder is the most common cause of dementia and is a leading source of their morbidity and mortality. Patient care costs in the United States are about 200 billion dollars and will more than double by 2040. This case report describes the remarkable improvement in a patient with advanced AD in hospice who received 5 computed tomography scans of the brain, about 40 mGy each, over a period of 3 months. The mechanism appears to be radiation-induced upregulation of the patient’s adaptive protection systems against AD, which partially restored cognition, memory, speech, movement, and appetite.

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A series of carefully prepared copolymers with several maleic anhydride levels, each at three molecular weights, has been prepared and characterized. This paper will briefly discuss the preparation of these polymers and then will present data on molecular weight, Tg, heat distortion temperatures, thermal stability, and melt viscosity.

A series of carefully prepared copolymers of styrene and maleic anhydride (S/MA) have been reacted with ammonia and converted to their respective styrene/maleimide (S/MI) derivatives. This paper discusses the preparation of these copolymers and presents extensive data on T", heat distortion temperatures, thermal stability, and melt viscosity. Some physical property data are also presented. Some new S/MA data concerning solubility parameter, density, coefficient of expansion, refractive index, and physical properties are also included and used for comparison.