Analysis of data from NASA B-57B gust gradient program

Statistical analysis of the turbulence measured in flight 6 of the NASA B-57B over Denver, Colorado, from July 7 to July 23, 1982 included the calculations of average turbulence parameters, integral length scales, probability density functions, single point autocorrelation coefficients, two point autocorrelation coefficients, normalized autospectra, normalized two point autospectra, and two point cross sectra for gust velocities. The single point autocorrelation coefficients were compared with the theoretical model developed by von Karman. Theoretical analyses were developed which address the effects spanwise gust distributions, using two point spatial turbulence correlations

Osteoid Seams and Resorption Spaces in Standard Samples of Human 6th and 11th Ribs

Studies of 6th and 11th rib samples taken at autopsy from 22 adults who had been seriously ill before death were compared, and it is provisionally concluded that the average number of bone forming and resorbing centers in a Unit amount of compacta are similar in each sampling site. More material on this continuing study of bone dynamics is scheduled for future issue of the MEDICAL JOURNAL

Tetracycline-Based Measurements of The Bone Dynamics in the Rib of A Girl with Hyperphosphatasia

Tetracycline-based quantitative histological analysis was made of a rib biopsy taken from a girl afflicted with hyperphosphatasia. The study revealed essentially normal bone dynamics on trabeculae, but greatly increased turnover in the compacta, which was largely composed of woven bone. Since both bone resorption and lamellar bone formation could be unequivocally demonstrated on periosteal, Haversian, and cortical-endosteal surfaces, it is suggested that the direct cause of the cell behavioral abnormality responsible for this disease may arise locally within the bone, but external to the bone cells. Because of its familial nature, however, the ultimate cause probably represents an inborn intracellular defect

Minority Stress Theory: Application, Critique, and Continued Relevance

The minority stress model has been influential in guiding research on sexual and gender minority health and well-being in psychology and related social and health sciences. Minority stress has theoretical roots in psychology, sociology, public health, and social welfare. Meyer provided the first integrative articulation of minority stress in 2003 as an explanatory theory aimed at understanding the social, psychological, and structural factors accounting for mental health inequalities facing sexual minority populations. This article reviews developments in minority stress theory over the past two decades, focusing on critiques, applications, and reflections on its continued relevance in the context of rapidly changing social and policy contexts