Elimination of dissolved gases in hypergolic engine propellants

Exposure to ultrasonic vibration eliminates dissolved gases in hypergolic propellants. A manometer connected to the ullage of the propellant container measures the volume of gases freed

Characterization of exothermic brazing components Skylab experiment M552

Information developed to characterize flight and ground based samples from the Exothermic Brazing Experiment is detailed. Included is information developed from metallographic observation, chemical analysis, and measurements of component dimensions. Comparisons of the flight and ground based specimens showed that good quality brazes were obtained. Effects of the zero gravity processing were noted on liquid metal flow and braze alloy-base metal reactions. Unusual metallurgical structures exhibited in the nickel brazes made in Skylab were the result of composition variations apparently related to the time-temperature cycle characteristic of this braze

Quantum harmonic oscillator state synthesis and analysis

Experiments are described in which a single, harmonically bound, beryllium ion in a Paul trap is put into Fock, thermal, coherent, squeezed, and Schroedinger cat states. Experimental determinations of the density matrix and the Wigner function are described. A simple calculation of the decoherence of a superposition of coherent states due to an external electric field is given.Comment: 13 pages, LaTeX2e, special style file spie.sty included, 11 eps figures included using epsfig, graphicx, subfigure, floatflt macros. To appear in Proc. Conf. on Atom Optics, San Jose, CA, Feb. 1997, edited by M. G. Prentiss and W. D. Phillips, SPIE Proc. # 299

School-Induced Shame: A Qualitative Analysis of College Freshmen’s K-12 Shame Experiences

This qualitative inquiry investigates shame theory and how societal shaming practices manifest themselves in our schools, examining specifically the negative effects of shame on human development. The researcher sought to understand the school-induced shaming experiences of recent high school graduates attending a four-year state university in the southern United States. Sixty-one college freshmen participated in the study. Written accounts of these individuals’ shame experiences were collected with 9 participants interviewed individually and in a focus group setting. By analyzing the school-induced shaming experiences of these individuals, the researcher was able to identify school practices, teacher actions, and peer-interactions that induce feelings of shame in children

Henri Temianka correspondence, Gurs

https://digitalcommons.chapman.edu/beach_gurs_et_al_correspondence/1001/thumbnail.jp