This study examined the extent to which the resolution of the Eriksonian final stage-related crisis of ego integrity versus despair is predicted by the resolution of earlier stage-related crises and by non-Eriksonian personality constructs. Subjects were administered an Eriksonian life stage measure called the Inventory of Psychosocial Balance, the Rosenberg Self-Esteem Scale, the Purpose-in-Life Scale, and the Self-Realization Scale. A series of alternative and hierarchically nested regression models was run to assess the direct effects of all preceding Eriksonian life stages and the non-Eriksonian personality measures on the final stage of ego integrity. The results were consistent with Eriksonian theory, which states that personality development is a continuous process in which psychosocial growth during earlier phases of life is a prerequisite for the resolution of later developmental conflicts.

Arginase activity in red blood cells (RBC) of various mammalian species including man was determined. In nonprimate species, the activity generally fell below the level of detectability of the assay: less than 1.0 mumol urea/g hemoglobin per hr. Activities in higher nonhuman primates were equal to or of the same order of magnitude as those in man (approximately 950 mumol/g hemoglobin per hr). RBC arginase deficiency with normal liver arginase activity has been shown to segregate as an autosomal codominant trait in Macaca fascicularis established and bred in captivity. This study confirms the presence of this polymorphism in wild populations trapped in several geographic areas and demonstrates the absence of immunologically cross-reactive material in the RBC of RBC arginase-deficient animals. These data when taken together suggest that the expression of arginase in RBC is the result of a regulatory alteration, has evolved under positive selective pressure, and is not an example of the vestigial persistence of an arcane function. The expression of arginase in the RBC results in a marked drop in the arginine content of these cells.

Deficiency of arginase (E.C. 3.5.3.1), the fifth enzyme of the urea cycle, was found in the red blood cells (RBCs) of Macaca fascicularis monkeys (<0.2 µmol arginine cleaved/g Hb/min; normal =49.2). Liver biopsies were obtained from two of these monkeys and from one monkey with normal levels of RBC arginase activity. Arginase from both groups of animals required Mn2+ for maximal enzyme activity and demonstrated a pH optimum of 10.2 in vitro. The activity of arginase in the livers of all three monkeys was 1.1 mmol arginine cleaved/g protein/min. The apparent K m for arginine of arginase in the livers of the RBC-deficient monkeys was 7.4 and 5.9mm and in the normal monkey was 6.9mm. Similar patterns of heat denaturation were seen at 69 C without Mn2+ present and 79 C in the presence of 20mm Mn2+. No difference in mobility on either acidic or basic polyacrylamide gels for liver arginase from either RBC-deficient or normal monkeys was found. In addition, liver arginase from all three monkeys reacted similarly with anti-human liver arginase antibody. Liver arginases in RBC-deficient and normal monkeys were identical by ten criteria. These studies do not distinguish among several hypotheses for the genetic determination of arginase in different organs of this species and of man.

This paper discusses the progress that has been made in a research program that is being conducted to acquire familiarity with the characteristics of infrared transmitting optical fiber and to learn how they can be used in various types of infrared systems. Arsenic trisulfide fibers clad with an arsenic-sulfur compound were used during these investigatons. Transmission curves are presented, and various types of image converters (both rigid and flexible) that have been constructed, are discussed. The factors to be considered in making a realistic appraisal of the trade-offs involved when considering infrared fibers for practical infrared systems are also discussed.

Proceeds from the production oi by-products may spell the difference between profit and loss in the citrus canning industry. The three primary by-products of citrus are dried citrus pulp, molasses, and citrus peel oil. The most important utilization of citrus wastes is as stock feed, which consumes large quantities of dried pulp and citrus molasses. Citrus seed oil, alcohol, pectin, bland syrup, and feed yeast have been produced to a lesser extent.