Three experiments demonstrating the feasibility of encapsulating liquids within a starch matrix are described, including encapsulation of linseed oil using the zanthate method and of turpentine and butylate using the calcium adduct procedure. Encapsulated materials, including pesticides, are slowly released from the resulting matrix. Considers…

Background information, laboratory procedures, and discussion of results are provided for syntheses of cobalt (III) complexes, I-III, illustrating three possible bonding modes of glycine to a metal ion (the complex cations II and III being linkage/geometric isomers). Includes spectrophotometric and potentiometric methods to distinguish among the…

Laboratory procedures, background information, and discussion of experimental results are provided for the preparation of Thallium (I) Pentacyanocobaltate (II). The preparation of this pale green salt is carried out in an aqueous medium. (Author/JN)

Background information, laboratory procedures, and discussion of results are provided for the synthesis and chemiluminescence of adamantylideneadamantane-1,2-dioxetane (I). Results provided were obtained during a normal junior level organic laboratory course. All intermediates and products were identified using routine spectroscopic analysis.…

Background information, laboratory procedures, and discussion of results are provided for experiments designed to familiarize students with the biochemistry of nicotinamide coenzymes and the chemistry involved in their reactions. In addition, students are exposed to ultraviolet (UV)-spectroscopy as a tool for investigating reaction mechanisms in…

Describes use of laboratory kits for home-based experimental studies for external science students. Contents of kits and extra equipment the student would need are listed, selection of suitable experiments and arrangements for loan of kits are discussed, and performance of external students using kits is compared to that of internal students. (EAO)

Discusses current research on behavior in organizations as it relates to building group cohesiveness in a writing lab staff and describes the operation of the writing lab at the University of Central Arkansas. (AEA)

Describes how the outdated language lab at Houston Baptist University was renovated and updated. Discusses the university's language internship program which grew out of the renovation. (EKN)

In a five-year study, second-year human physiology students were grouped for laboratory according to previous physiology and laboratory experience. No significant differences in course or board examination performance were found, though correlations were found between predental grade-point averages and grouping. (MSE)

Describes a method of staining that makes details clear and dispenses with the time-consuming use of chemicals. The Rheinberg differential color illumination, (or optical staining) is strikingly beautiful and is especially useful with living or nonliving unstained, transparent specimens. Color photographs of sample specimens are included.…

Suggests alternatives for benzene, carbon tetrachloride, and chloroform and offers safety precautions when these solvents must be used. (JN)

Two laboratory procedures in experimental chemotaxonomy are outlined for determining the presence of betalains in genera representing different plant families. A list of materials and equipment needed is provided. (DC)

For architecture students, a laboratory is seen as the most natural and productive way of learning about building construction. An introductory construction course at MIT is described that includes lectures, assigned readings, homework exercises, field trips to construction sites, and a weekly laboratory for hands-on experience. (MLW)

Addresses the problems involved in meeting diverse student needs within the classroom. Encourages the use of computer-managed education (CME) to facilitate the record-keeping and decision-making involved in instruction. Explains the use of a CME system in Seattle Community College's mathematics laboratory. Concludes that CME increases…

Described is a rock encyclopedia combining rock sample sets and encyclopedic word and picture entries which can be used as a realistic information resource for independent study or as a part of a course. (JT)