ScienceJohn Michels (Journalist) 1952 |
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Стр. 88
... methanol . The crude dextran was dissolved in water and reprecipi- tated with methanol . This was repeated several times more for purification . For depolymerization the native dextran was sub- jected to acid hydrolysis , the course of ...
... methanol . The crude dextran was dissolved in water and reprecipi- tated with methanol . This was repeated several times more for purification . For depolymerization the native dextran was sub- jected to acid hydrolysis , the course of ...
Стр. 175
John Michels (Journalist). 07 56 5 % methanol . The methanol was then removed from the clear , green extracts by contact with water . In a few minutes , the absorption maxima of the solutions shifted to longer wavelengths , chlorophyll a ...
John Michels (Journalist). 07 56 5 % methanol . The methanol was then removed from the clear , green extracts by contact with water . In a few minutes , the absorption maxima of the solutions shifted to longer wavelengths , chlorophyll a ...
Стр. 359
... METHANOL 3. ETHANOL 60- 4. PROPANOL 50- 40- 30- 20- 10 4 . t 1 I I I 1 10 20 30 40 50 % SOLVENT 60 70 80 90 100 FIG ... methanol , no loss of sodium with the precipitate was evident with this sol- vent . Of the solvents studied , only ...
... METHANOL 3. ETHANOL 60- 4. PROPANOL 50- 40- 30- 20- 10 4 . t 1 I I I 1 10 20 30 40 50 % SOLVENT 60 70 80 90 100 FIG ... methanol , no loss of sodium with the precipitate was evident with this sol- vent . Of the solvents studied , only ...
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