Explains the mechanisms and describes the processes that underlie gravitropism in roots. Reviews experimental efforts and investigative results that explored the causes of root behavior. (ML)

Presented is a collection of abstracts of selected technical reports, journal articles, and other documents resulting from research supported by the directorates of the National Science Foundation. Reports are grouped by sponsoring directorate: Biological, Behavioral and Social Sciences; Engineering; and Scientific, Technological and Industrial…

This special report, prepared by several chemists working in the field of electron microscopy, provides information regarding the most recent developments in transmission and scanning electron microscopy that have chemical significance. (CS)

Compares two methods (batch and continuous) in which microorganisms are used to produce industrial chemicals. Describes batch and continuous stirred-tank reactors and offers reasons why the batch method may be preferred. (JN)

This workbook provides descriptions of research projects for high school and middle school science teachers and students. The projects can be used as demonstrations in the laboratory or classroom to help teachers illustrate the practical application of basic science principles. They can also be used by students, under the guidance of the teachers,…

Outlines advances in the microbial production of pharmaceuticals, including the manufacture of penicillin and other antibiotics, vitamins, hormones, alkaloids, antitumor drugs, and interferons. (CS)

Compares traditional and newer methods by which microorganisms are used to produce industrial chemicals. Includes a discussion of economic considerations and new genetic methods in programing microorganisms. Details methods for producing enzymes, aliphatic organic compounds, amino acids, ethanol, n-butanol, and alkene oxides. (CS)

Presents an overview of the field of industrial microbiology, providing historical backgrounds of scientific discoveries in the field and descriptions of industrially important microorganisms. Applied research in industry is also detailed, with mention of gene amplification, DNA recombination, pharmaceutical approaches, and detoxification and…

Traces the development of the field of industrial microbial genetics, describing a range of techniques for genetic programing. Includes a discussion of site-directed mutagenesis, protoplast fusion, and recombinant DNA manipulations. (CS)

Elucidates strategies for applying microbiological techniques to traditional agricultural practices. Discusses the manipulation of microorganisms that live with plants and also the problems involved in the introduction of new genes into crop plants by recombinant DNA methods. (CS)

Describes industrially important yeasts, molds, bacteria, and actinomycetes. Discussed in detail are microbial products, such as primary metabolites, secondary metabolites, enzymes, and capsular polysaccharides. Traces the historical background of human cell culture, mentioning recombinant DNA research and hybridization of normal mammalian cells…