Compared with the conventional end window Geiger tube, the jacketed counter for the
radioassay of liquids had higher precision and counting efficiency, eliminated the need for …

Following comparisons of oven-dried, air-dried and freeze-dried plant material used for
autoradiography, a freeze-drying method is described. A review is made of the equipment …

Within the past few years, reports in the literature indicate the increasing use of detailed
autoradiographic techniques in problems concerned with the location of areas of deposition …

In recent years autoradiography has frequently been used to study the distribution of
radioactive nutrients absorbed by plants. The method g~ nerally employed has been very …

animal tissues and, to a limited extent, plant tissues are discussed. Plutonium is used as an
example to illustrate an alpha-autoradiographic technique by which either particulate or …

In the many uses of the autoradio-graphic techniquesince these initial studies, there are
indications that certain treatments of plants or plant parts before or during autographing may …

In the spring of 1950 work was begun on research involving the attenuation of the effects of x-
rays and other irradiations upon sorghum seedlings. During the progress of this research it …

Other dry products, corn and rice in particular, have been X-rayed for defects. The detection
of cracks through the endosperm of corn is important to its economical processing into …

Favorable growth responses have recently been obtained with some phosphorus
compounds applied as foliar sprays to vegetable crops, the objec-tive being to supplement …

Method Samples of plant material are dried at 70 C. in a forced hot-air oven for 48 hours and
ground in a Wiley mill to pass a 20-mesh stainless steel sieve as previously reported (5) …