Chemical reaction rates can be controlled by varying composition of miniscule clusters of metal atoms. These bimetallic catalysts have had major impact on petroleum refining, where work has involved heterogeneous catalysis (reacting molecules in a phase separate from catalyst.) Experimentation involving hydrocarbon reactions, catalytic…

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)

The chemical dimension of the function of the brain is discussed in this article. The chemical transmitters or substances are related to the excitatory or inhibitory influence on neurons. (Author/SA)

Certain chemical systems oscillate between one color and another. This article describes procedures for examining this phenomenon. (MA)

Describes a method to detect the presence of microgram quantities of nearly any metal in samples of alloys, minerals, water, and air. This chemical-spot testing technique requires no elaborate equipment and can be done by an amateur. (SK)

Presents instructions for carrying out polymerase chain reactions with a bit of inexpensive equipment. (WRM)

Discusses how handedness at one level may give rise to handedness at another. Presents examples from plants and animals, molecules, atoms, to elementary particles. Examines the chiral symmetry in life and when it starts. (YP)

Discusses solubility interactions of various oils placed on the surface of water and other liquids, explained using the basic forces of gravity, electrical attraction, and quantum mechanics (non-mathematical). Hydrogen and ionic bonding between oleic acid/water is analyzed. An experiment to determine physical properties of the oleic acid molecule…

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