Chemical News and Journal of Industrial Science, Tom 144,Wydanie 3744Chemical news office., 1932 |
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Strona 34
... vapour lamps . The sand is also brought into contact with radioactive matter and other reagents essential to the process . Afterwards the sand is heated to 1,400 ° C , treated with sul- phuric acid and then the gold is extracted with ...
... vapour lamps . The sand is also brought into contact with radioactive matter and other reagents essential to the process . Afterwards the sand is heated to 1,400 ° C , treated with sul- phuric acid and then the gold is extracted with ...
Strona 45
... vapours and absorp- tion of industrial dust ; legislation of in- dustral sanitary improvements hygiene for workers . and During the Congress the annual provincial meeting of the " Syndicate of Medical Hygienists of France " will be held ...
... vapours and absorp- tion of industrial dust ; legislation of in- dustral sanitary improvements hygiene for workers . and During the Congress the annual provincial meeting of the " Syndicate of Medical Hygienists of France " will be held ...
Strona 48
... vapour mixture , preferably containing excess of hydrogen chloride , may be produced by heating dilute sulphuric acid with sodium chloride and alcohol . The vapours pass to a second reaction vessel containing the metal chloride solution ...
... vapour mixture , preferably containing excess of hydrogen chloride , may be produced by heating dilute sulphuric acid with sodium chloride and alcohol . The vapours pass to a second reaction vessel containing the metal chloride solution ...
Spis treści
H W BLOOD RYAN M A D Sc LL D Ph D | 34 |
U S Chemists Battle over Best Type of Catalyst | 42 |
New Patents | 48 |
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