Results 21 to 30 of about 1,095 (153)

A new technique for the separation of radiophosphorus from sulfur [PDF]

open access: yes, 1952
A new approach to the separation of radiophosphorus from sulfur has been found which makes a unique use of ion exchange resins. Separations using resin columns are especially suited to problems involving radioactivity since they require a minimum of ...
McIsaac, L. D., Voigt, A.
core   +4 more sources

FLIGHT RANGE OF AFRICANIZED HONEYBEES, Apis mellifera L. 1758 (Hymenoptera: Apidae) IN AN APPLE GROVE

open access: yesScientia Agricola, 1997
Africanized honeybees from five colonies were marked with P-32 and taken to an apple grove for a flight behavior study. The method used to determine the flight range was to put out an array of tagged trees in a cross pattern with the colonies arranged in
PARANHOS B.A.J   +2 more
doaj  

History of Microbiology at The Ohio State University, 1873-1969 [PDF]

open access: yes, 1969
Prepared for the Centennial of The Ohio State ...
Birkeland, Jorgen Maurice, 1898-   +1 more
core  

Dispersal of Aedes aegypti: Field study in temperate areas using a novel method [PDF]

open access: yes, 2013
Background & objectives: Since Aedes aegypti was identified as vector of yellow fever and dengue, its dispersal is relevant for disease control. We studied the dispersal of Ae.
Bergero, Paula Elena   +4 more
core   +1 more source

Study of systemic insecticides: Location and amounts of residue in plant tissues determined with aid of radio-phosphorus tracers

open access: yesCalifornia Agriculture, 1954
The systemic insecticides – schradan – octamethyl pyrophosphoramide and demeton or Systox–O,O-diethyl O-ethyl-beta-mercaptoethyl thionphos-phate–and their derivatives have shown unusual promise for the control of mites and aphids and other sucking ...
R Metcalf, R March, T Fukuto
doaj  

Thyroidal Control of Radiophosphorus Metabolism in Salmon [PDF]

open access: yesNature, 1960
THE part played by the thyroid gland in teleost metabolism has been investigated by many workers. In cold-blooded vertebrates it appears to be concerned more with growth than with general metabolism1. However, there is a great deal of controversy on practically every aspect of thyroid physiology.
openaire   +2 more sources

The direct measurement of ATP and adenine nucleotide pool turnover in microorganisms: a new method for environmental assessment of metabolism, energy flux and phosphorus dynamics [PDF]

open access: yes, 2017
A method has been devised which enables the direct measurement of ATP and adenine nucleotide pool turnover. The method is based upon the incorporation of 32PO4 into the α-, β-, γ-P positions of ATP.
Bossard, Peter, Karl, David M.
core  

Present Trends and Future Needs of Entomological Research in Northern Canada [PDF]

open access: yes, 1954
Contains a review, by the senior author, of the Northern Insect Survey since its inception in 1947, number of localities investigated and papers published. Problems to be solved like origin, post-glacial histories and present distribution are also noted.
Freeman, T.N., Twinn, C.R.
core   +2 more sources

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