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Now showing items 24271-24280 of 24324
High-speed scanning laser diffractometer
(1979)
A high-speed laser diffractometer is described which employs a novel scanned array or optical light guides to record the angular intensity variation of light scattered radially by a particle throughout an arc of 180 degrees ...
Alterations in the soluble protein patterns of tobacco and cowpea leaves following inoculation with tobacco necrosis virus
(1978-06-01)
Changes in the soluble protein composition of both tobacco and cowpea leaves following inoculation with tobacco necrosis virus (TNV R/1 : 1.5/19 : S/S : S/Fu [1]) have been investigated by the techniques of disc-electrophoresis. ...
Suppression of virus induced local lesions in plasmolysed leaf tissue
(1978-05-01)
It has been demonstrated previously that protoplasts derived from leaves which normally respond in vivo to virus inoculation, with the formation of necrotic local lesions show no such response when inoculated in vitro [1]. ...
Efffects of hypothalamic lesions on the food intake of the goldfish (Carassius auratus)
(1978)
Goldfish were trained to perform an operant response in order to obtain food, thereby allowing the food intake to be accurately determined. The normal daily food intake was established for each fish before it was given a ...
Hatfield near-infrared polarimeter
(1978)
The design of the Hatfield Polytechnic Observatory's near-infrared (IJHKLM) polarimeter is described and its performance iliustrated by some representative observations on bright standard stars. Preliminary measurements ...
Direct measurement of gain recovery in a saturated Nd-glass amplifier
(1978)
The temporal dependence of the gain recovery in a Nd-silicate glass amplifier has been directly observed after the passage of a short intense saturating laser pulse. The gain recovery time constant measured for ED-2 glass ...
Effects of root-infecting fungi on wheat transport processes and growth
(1978)
Aurtobasidium bolleyi and Gaeumannomyces graminis damaged transport processes and decreased shoot growth of sand-grown wheat plants only if they colonized the stele and disrupted the phloem of most roots. One week after ...