Zobrazeno 1 - 7
of 7
pro vyhledávání: '"G. H. Andrews"'
Autor:
David G H Andrews
Publikováno v:
Biology Methods & Protocols
Many studies have been made on nematodes, especially Caenorhabditis Elegans, which are used as a model organism. In many studies, the size of the nematode is important. This article describes a method of measuring the length, volume and surface area
Autor:
D G H Andrews
Publikováno v:
Physics Education. 44:48-52
A computer model of the decay of a radioactive series, written in Visual Basic in Excel™, is presented. The model is based on the random selection of cells in an array. The results compare well with the theoretical equations. The model is a useful
Autor:
D G H Andrews
Publikováno v:
European Journal of Physics. 29:1077-1083
A simple student experiment investigating dependence on air pressure of the attenuation of alpha particles in air is described. An equation giving the pressure needed to absorb all alpha particles of a given energy is derived from the Bethe?Bloch for
Autor:
D G H Andrews
Publikováno v:
Physics Education. 35:350-353
Doppler ultrasound is widely used in medicine for measuring blood velocity. This paper describes an experiment illustrating the principles of medical Doppler ultrasound. It is designed with A-level/undergraduate physics students in mind. Ultrasound i
Publikováno v:
Holographics International '92.
The technique of heterodyne holographic interferometry for the accurate measurement of small displacements is wellestablished. In this paper a new detection method is employed which allows the direct measurement of strain components. This potentially
Publikováno v:
Journal of Applied Physiology. 60:1413-1419
Female rats were initially divided into a sedentary or an exercise group that was trained by treadmill running to a final work rate of 31 m/min, 100 min/day, for 13–18 wk. During the last 12 days of training each of these groups were further subdiv
Publikováno v:
Journal of Vacuum Science and Technology. 13:552-552
An UHV system has been constructed for use in conjunction with a Rodder ultramicrobalance for gravimetric studies of metal–gas reactions. Though intended specifically for the study of the early stages of uranium oxidation, the apparatus and techniq