منابع مشابه
Intelligence Tests at the Royal Eastern Counties' Institution
Ninety-two patients were tested in this way. In 69 cases the average I.Q. arrived at from the two Performance Tests was higher than the Stanford I.Q. In three the results were the same, and in 20 the Stanford I.Q. was higher than the Average Performance I.Q. Further, where the Performance I.Q. was above the Stanford, it was much more above it than the Stanford was above the Performance Test res...
متن کاملIon Transport in Hydrodictyon africanum
The concentrations of K, Na, and Cl in the cytoplasm and vacuole, the tracer fluxes of these ions into and out of the cenocyte, and the electrical potential difference between bathing solution and vacuole and cytoplasm, have been measured in Hydrodictyon africanum. If the ions were acted on solely by passive electrochemical forces, a net efflux of K and Cl and a net influx of Na would be expect...
متن کاملThe Cell Sap of Hydrodictyon
Analysis of the cell sap of Hydrodictyon patenaeforme Pocock, from California indicates the usual marked accumulation of potassium, which is 4000 times as concentrated as in the surrounding pond water. Small amounts of sodium and calcium were found. Chloride makes up about three-fourths of the anions, with a very high sulfate, and much lower bicarbonate concentration accounting for most of the ...
متن کاملThe effect of ouabain on the Alga Hydrodictyon reticulatum.
The action of the cardiac glycoside ouabain on animal cells was thoroughly studied and its characteristics are well known (see Weatherall 1962): the cells gain sodium and lose potassium, the cell membrane potential decaying. This is commonly interpreted as a rerult of a specific sodium-potassium transport inhibition . The effects of ouabain were also looked for on giant cells of Characeae; some...
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ژورنال
عنوان ژورنال: Nature
سال: 1884
ISSN: 0028-0836,1476-4687
DOI: 10.1038/030488b0