Mertz, Dan. (U. Missouri, Columbia.) Distribution and cellular localization of ascorbic acid oxidase in the maize root tip. Amer. Jour. Bot. 48(5): 405–413. Illus. 1961.—Ascorbic acid oxidase has been identified by its various properties in homogenates of the maize root tip. Following centrifugal fractionation of the gross homogenate, approximately 30% of the total oxidase activity was found in the soluble fraction, while roughly 70% was bound to the cell wall debris. Quantitative measurements of serial segments revealed that the bound oxidase per cell increases with cell elongation. The very striking parallelism of the bound oxidase activity with that of cell elongation suggests that ascorbic acid oxidase may in some way participate in growth of the cell wall, and have very little to do with cellular respiration.
Within inpatient psychiatric settings exists evidence of a significant risk of violent incidents and incidents of deliberate self-harm. One of the most hidden and preventable mental health problems is the fact that approximately 1,500 suicides take place annually in inpatient hospital facilities throughout the United States. This article focuses on the advantages and disadvantages of risk and suicide assessment procedures while attempting to answer the following questions: What degree of risk currently exists on inpatient psychiatric facilities for harm to self and others? What can be done within the physical environment to protect the psychiatric patient? We discuss a combined risk and quality proactive approach to risk reduction through a safety equation integrating patient assessment, physical environment, program safety, and patient component to formalize a systems approach to the at-risk patient. [Brief Treatment and Crisis Intervention 5:121-141 (2005)]
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