A simple procedure for the preparation of highly purified (sodium + potassium) adenosinetriphosphatase from the rectal salt gland of Squalus acanthias and the electric organ of Electrophorus electrieus

1978 ◽  
Vol 86 (2) ◽  
pp. 378-385 ◽  
Author(s):  
John F. Dixon ◽  
Lowell E. Hokin
Keyword(s):  
Simple Procedure ◽  
Electric Organ ◽  
Salt Gland ◽  
Squalus Acanthias ◽  
Sodium Potassium

A Simple Procedure for the Study of Ionic Regulation in Small Animals

1955 ◽  
Vol 32 (2) ◽  
pp. 321-329
Author(s):  
J. SHAW
Keyword(s):  
Simple Procedure ◽  
Small Animals ◽  
Ionic Regulation ◽  
Salt Solutions ◽  
Sodium Potassium ◽  
Specific Chemical ◽  
Blood Samples ◽  
Electrometric Method ◽  
Chemical Reagents ◽  
Calcium And Magnesium

A simple procedure is described for the estimation of sodium, potassium, calcium and magnesium in quantities of about 1 µg. The ions are precipitated by specific chemical reagents, the precipitates separated by centrifugation and converted quantitatively into chlorides. The chloride is titrated by the Volhard method or by an electrometric method using a simple automatic micro-burette. Measurements made on simple salt solutions and on blood samples gave standard deviations of 1-2% except in the sodium method where the error was greater (2-4%).

Spin-change cross-sections for collisions between alkali atoms

1965 ◽  
Vol 286 (1407) ◽  
pp. 519-524 ◽  
Keyword(s):  
Satisfactory Agreement ◽  
Cross Sections ◽  
Simple Procedure ◽  
Sodium Potassium ◽  
Alkali Atoms

A simple procedure is described for the calculation of the interactions between two atoms at intermediate separations and the spin-change cross-sections for collisions between pairs of atoms selected from hydrogen, lithium, sodium, potassium, rubidium and caesium are calculated. Satisfactory agreement with the measured values is obtained.

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