Biomedical subjects

J A Byers

Publications and source records attributed to J A Byers.

4 recordsLinked to original sources

PubMed1992

REF-LIST: program to list references found in DOS text files of scientific manuscripts.

A computer program, coded in QuickBASIC language, is used to make a non-redundant list of references, in alphabetical order, that are found in a scientific manuscript (formatted as a DOS text file). The program can extract either direct or indirect citations as in the following: Byers (1983a, b, 1984) and Miller and Keen, 1960; Byers et al., 1984; Byers 1984) An IBM-compatible personal computer is required to run the executable program.

Algorithms↗

PubMed1991

Basic algorithms for random sampling and treatment randomization.

Five BASIC programs to select random samples from populations or to randomize treatments are presented. Program 1 is used to obtain randomization of any number of treatments in an equal number of positions or test units for any number of replicates. Program 2 produces latin squares of any size for treatment randomization. Program 3 is used to obtain a specific number of randomly selected samples from a population without replacement. Program 4 produces quasi-latin squares that have treatments repeated equally in all rows and columns, with identical treatments either spaced or not. Program 5 can be used with any size grid to place 3-100 treatments in equal proportions and with spacing of identical treatments. Both programs 4 and 5 allow for horizontal and vertical separation between identical treatments at sampling places while still retaining the quality of randomness. These programs should facilitate random sampling and randomization procedures which are required to correctly analyze experiments by the methods of statistical probability.

Algorithms↗

PubMed1987

Novel fraction collector for studying the oviposition rhythm in the turnip moth.

Turnip moths, Agrotis segetum (Schiff.) (Lepidoptera: Noctuidae), were held in a transparent plastic box with a window opening to a rotating paper drum upon which the females could lay eggs. A novel fraction collector, consisting of a standard 24-hr wall timer and simple electronic circuit, served to rotate the paper in hourly increments. The entire apparatus was housed in an environmental chamber on a 16 hr light: 8 hr dark photoperiod at constant 23.7 degrees C and 55% r.h. Under these conditions a circadian rhythm of egg laying was indicated with a mean activity time 0.2 hr before dark and standard deviation of 2.1 hr. The relative egg productions during the second to seventh day of oviposition peaked on the third day. Differences in the circadian rhythm of egg laying was indicated with a mean activity time 0.2 hr before dark and standard deviation of 2.1 hr. The relative egg productions during the second to seventh day of oviposition peaked on the third day. Differences in the circadian rhythms of mating and oviposition are considered in terms of ecological fitness.

Animals↗

PubMed1977

Terrain preferences in the play behavior of Siberian ibex kids (Capra ibex sibirica).

Play behavior was studied in a captive group of Siberian ibex at the Chicago Zoological Park. The hypothesis that physical training effects were at least partially responsible for the evolution of play in this species was tested by noting the amounts of play which occurred on flat and on sloped surfaces. The kids showed a clear preference for play on sloped terrain, even though this choice resulted in considerably greater risks. The danger involved in highly active locomotor play performed on steeply sloped areas is presumably outweighed by the physical training benefit for an adult life spent moving in precipitious areas.

Animals↗