Food security is researched and dealt with on local, regional, national, and global levels with solutions ranging from local farmers' market initiatives to increasing crop yields through genetically modified plants to streamlining global supply chains. Because of its broad, interdisciplinary nature, it is necessary to narrow the focus of this…

Argues that previous definitions of work and heat are inappropriate. Presents new definitions that are formulated using experimental quantities, claiming that they apply equally well to reversible and irreversible processes. Indicates some of the problems with earlier definitions and applies the new definitions to the First Law of thermodynamics.…

Reviews much of what is known about microtubules, which are biopolymers consisting predominantly of subunits of the globular protein, tubulin. Describes the functions of microtubules, their structure and assembly, microtube associated proteins, and microtubule-disrupting agents. (TW)

Describes the major components of the solar system and proposes several features that a theory about the solar system should include. Contains explanations of several theories about the origin of the solar system. (TW)

Provides an overview of the development and use of numeric databases, and of the evolution of user charging methods for all online information retrieval systems. The need to provide database users with advance estimates of charges is discussed, and a methodology for charge estimation is presented. (87 references) (CLB)

Presents scientific and technical information related amateur radio operation, commonly called "ham" radios, and radio astronomy. (PR)

This report compiles scientific evidence and statistics on the health risks of weight loss interventions and is intended to help both professionals and consumers cope in healthful ways with the complex dilemmas of weight. The publication is organized into six chapters: (1) "Risks of Losing Weight"; (2) "Effectiveness of…

This manual, the second part of a guide to assist colleges in field-testing the survey instrument "Student Goals Exploration" (SGE), is a technical treatment for use by researchers. The SGE is a survey designed to measure student goals for attending college and for enrolling in specific courses. Section I, "About the Student Goals…

This guide is designed to provide aid and support to library staff in finding government scientific and technical reports. Following an introduction to bibliographic sources for the technical report literature, the guide outlines a general search strategy for the retrieval of technical reports and presents an overview of the following five major…

Describes common traits of and provides information on a dozen characteristic Eurojournals, i.e., science journals intended to consolidate the best European research. They are compared with individual national and international titles, their success is gauged, and they are suggested as an alternative to multiple foreign subscriptions for American…

Traditionally engineers are not heaviest users of information resources. This can be traced to lack of emphasis on information sources in engineering education. Failure to use available knowledge leads to reinventing the wheel and losing the race for technological superiority. Few U.S. universities offer formal courses in information resources in…

Recently, three issues in particular have fueled controversies in environmental debate: ozone, dioxin, and global warming. This article examines how these issues have been characterized by journalists, scientists, and backlash authors. It is suggested that media backlash is threatening to undo public faith in scientific knowledge about global…

Based on a study of the book collection of Columbia-Greene Community College Library (New York) carried out in the summer of 1987, this report investigates the relationship of age and previous use to the future use of books. An examination of the acquisition year and circulation records of 10% of the library's book collection (approximately 4,000…

The author describes relationships between the fungi called mycorrhizae and plants. Describes the classes of mycorrhizae and the importance of such fungi in plant growth. Presents clear micrographs of the fungi and their interactions with plant root cells. Provides technological applications of mycorrhizae in agriculture and discusses problems…