This guide is intended to provide stimuli for discussion and review of ecological principles and their relevance to daily human existence. The illustrations, purposefully detailed and complex, are intended to provide a basis for in-depth discussion. The bulletin is intended to supplement classroom materials and also to serve non-classroom…

The document contains the papers presented at the 5th Congress of the World Federation of Hemophilia in Montreal in 1968. Seven papers concern specific therapy of hemophilia, five papers treat nonspecific forms of therapy, seven papers deal with prophylaxis and complications in hemophilia, seven others deal with orthopedic and other surgical…

This manual for sewage treatment plant operators was prepared by a committee of operators, educators, and engineers for use as a reference text and handbook and to serve as a training manual for short course and certification programs. Sewage treatment plant operators have a responsibility in water quality control; they are the principal actors in…

Video cassette demonstrations are useful in teaching experimental techniques and instrumentation. This article describes how the recorded demonstrations save instructor and student time, how they can be integrated into a multimedia teaching format, and how recordings support student independence. (Author/BB)

Listed and described are student A-level biology projects in the following areas: Angiosperm studies (e.g., factors affecting growth of various plants), 7; Bacterial studies, 1; Insect studies, 2; Fish studies, 1; Mammal studies, 1; Human studies, 1; Synecology studies, 2; Environmental studies, 2; and Enzyme studies, 1. (CS)

Describes an experiment which demonstrates the association of particular metabolic biochemical changes and muscular fatigue. Highlights applications related to cellular energy metabolism, metabolic regulation, and muscle energetics. (ML)

Explores the use of the poster as a form of scientific communication, and its relationship to the published paper, the abstract, and the oral communication. Suggestions for size, format, and layout for posters are presented. Reviews of two booklets on posters are printed at the end of this article. (TW)

Presents a laboratory exercise suitable for advanced placement biology or chemistry classes. Discusses the theoretical approach, preparation and standardization of reagents, and results. Emphasizes standard analytical procedure and chelometric titration. (CW)

Describes an experiment designed to use the ability of duckweed to convert the secondary hydroxyl moieties into ketone groups. Discusses the preparation of plant material, materials, procedures, and results for this biotransformation experiment for undergraduate students. (CW)

Discusses the differences between iron and copper. Describes various aspects of the behaviors of these two elements, including those of biological and environmental significance. Addresses the evolution of the atmosphere and sedimentary ore formation, the phylogeny of iron and copper, and some anthropological notes regarding the use of the metals.…

Provides a listing of 35 demonstrations designed to generate interest in organic chemistry and help put points across. Topics include opening lecture; molecular structure and properties; halogenation; nucleophilic substitution, alkenes and dienes, stereochemistry, spectroscopy, alcohols and phenols, aldehydes and ketones; carboxylic acids, amines,…

Explains the structural organization of DNA by providing information on the primary, secondary, tertiary, and higher organization levels of the molecule. Also includes illustrations and descriptions of sign-inversion and rotating models for supercoiling of DNA. (ML)

A course, designed to illustrate the correlation of the biochemistry and physiology content of the curriculum with clinical applications, is described. The entire presentation, from introduction and interview of the patient to the correlation of the clinical application with the basic sciences, was managed by the students. (Author/MLW)

This paper explains the results of a survey of students' ideas about food as a scientific concept. The survey found that high school students in Singapore (n=66) displayed an anthropocentric view of food that was not generally applied across living organisms in heterotrophs (animals) or autotrophs (plants) as a whole. It is also noted that…