The objective of this paper is to design a train of tubular reactors that use a methane feed to produce hydrogen of the desired purity so that it can be utilized by a fuel cell for automotive applications. Reaction engineering principles, which are typically covered at the undergraduate level, are utilized to design this reactor train. It is shown…

Two basic concepts of the social sciences--society and culture--are analyzed and new definitions are proposed. Concepts are the basic building blocks of scientific theory. A science with poor concepts will, therefore, be incapable of producing powerful scientific theory. When commonly used social science definitions of society and culture are…

Presents some materials for use in demonstration and experimentation of corrosion processes, including corrosion stimulation and inhibition. Indicates that basic concepts of electrochemistry, crystal structure, and kinetics can be extended to practical chemistry through corrosion explanation. (CC)

Discusses some important aspects of bioinorganic chemistry, including interactions of organisms with metallic and nonmetallic elements and compounds. Indicates that many environmental problems are created by human exploitation of nature and technologies if studied from a bioinorganic chemical viewpoint. (CC)

The study reported here extends the investigation begun by Piaget of content effects to laboratory and naturalistic tasks. If the accuracy and completeness of the subjects' expected variables is related to content, then performance on laboratory and naturalistic tasks should differ systematically. The subjects' expected variables were measured by…

The purpose of this study was to identify the earth science principles pertinent to current programs in general education at the junior high level, and to determine whether selected textbooks provide adequate representation of those principles. There were 121 principles identified as being essential to the understanding of these five earth science…

Space science-oriented concepts and suggested activities are presented for intermediate grade teachers of science and mathematics in a book designed to help bring applications of space-oriented mathematics into the classroom. Concepts and activities are considered in these areas: methods of keeping time (historically); measurement as related to…

This second draft of a manuscript for a high school engineering and technology course uses case studies as its format. The principles associated with various engineering problems are presented along with their effects on daily life. Topics include the computer, the automotive power system, satellite communications, the petroleum industry, water…

Lists objectives for a scientifically literate citizenry and major knowledge components of a definition of scientific literacy. (MLH)

Demonstrates that the assumption of a single-frequency wave does not eliminate the effect of frequency dispersion upon energy transport velocity nor upon energy density. (Author/SL)

Demonstrates that the standard deviation of the position probability of a particle moving freely in one dimension is a function of the standard deviation of its velocity distribution and time in classical or quantum mechanics. (SL)

Discusses the nature of science and addresses the question of why scientific knowledge cannot be absolute. (SL)

Describes a method of introducing secondary or college students to direct-current electricity via a technique used for elementary level students. (SL)