Assessing farmland in Illinois. 1224

Cover title."December, 1983."--p. [3] of cover.Prepared by D.L. Chicoine and J.T. Scott.Includes bibliographical references and index

Direct foam writing in microgravity

Herein we report 2D printing in microgravity of aqueous-based foams containing metal oxide nanoparticles. Such hierarchical foams have potential space applications, for example for in situ habitat repair work, or for UV shielding. Foam line patterns of a TiO2-containing foam have been printed onto glass substrates via Direct Foam Writing (DFW) under microgravity conditions through a parabolic aircraft flight. Initial characterization of the foam properties (printed foam line width, bubble size, etc.) are presented. It has been found that gravity plays a significant role in the process of direct foam writing. The foam spread less over the substrate when deposited in microgravity as compared to Earth gravity. This had a direct impact on the cross-sectional area and surface roughness of the printed lines. Additionally, the contact angle of deionized water on a film exposed to microgravity was higher than that of a film not exposed to microgravity, due to the increased surface roughness of films exposed to microgravity

Symposium: Reader Interest in Science - Adults

A comprehensive discussion of what adult readers read, and why they read, in the area of the sciences would take much more time than the limits of this portion of the symposium afford. This consideration therefore proposes to indicate some conclusions based on observations and reading- -observations which it is hoped will be helpful, both as an aid in meeting current problems and as a stimulant to further discussion. Katherine Prescott concludes her study* of the interests of people who used the Norwood Branch of the Cleveland Public Library by indicating that the prime function of this particular branch was to "help people meet the problems of everyday living. " Reading for entertainment came second, and highly intellectual reading was a very poor third. This study was undertaken as an aid in shaping book selection policy, and as such it is useful to us in furnishing the above mentioned clue as to why people read. The characteristics of a library's service area determine both quantity and quality in what is read, and therefore the specific conclusions certainly do not apply to each and every library because the physical, economic, and social factors vary from community to community.published or submitted for publicatio

Statistical analysis of the goodness of classical factor analysis regression (CFAR)

Cover title.Bibliography: p. 23-25

The economics of machinery choice in corn production

Includes bibliographical references (p. 23-24)