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Articles 271 - 274 of 274
Full-Text Articles in Chemistry
A Study Of Phytosterol Obtained From Cocoa Beans And Cocoa Butter, Norman Anthony Pokorny
A Study Of Phytosterol Obtained From Cocoa Beans And Cocoa Butter, Norman Anthony Pokorny
Bachelors’ Theses
Despite the fact that considerable work has been done on cholesterol, relatively little is known about its isomer, phytosterol. Both cholesterol and phytosterol belong to the general group of sterols. Cholesterol is described as an aromatic sterol, a mono~atomic secondary alcohol, containing an iso-propyl and a vinyl group, with a terpene-like structure. Cholesterol was first discovered by Conradi in 1775, then by Gren (1788) in biliary calculi. In 1785 Fourcroy isolated cholesterol from gall-stones, one variety of which is composed almost wholly of it, but it was confused with adipocere, until Chevreul (1814) discovered its true nature, when he declared …
A Study Of The Reactions Of The Sulphies Of The Tin Group With Hydrochloric Acid And In Non-Aqueous Solutions, Charles Bernard Cannon
A Study Of The Reactions Of The Sulphies Of The Tin Group With Hydrochloric Acid And In Non-Aqueous Solutions, Charles Bernard Cannon
Bachelors’ Theses
Arsenic, antimony, and tin constitute the so-called tin group, a subdivision of the hydrogen sulphide, or second group, in qualitative analysis.
The Water Supply Of The City Of Milwaukee With Experimental Data, William K. Stumpf
The Water Supply Of The City Of Milwaukee With Experimental Data, William K. Stumpf
Bachelors’ Theses
All mankind, whether the wandering savage, the isolated pioneer, or the dweller in the congested city, requires a constant supply of water for his needs. This fact is attested to in all the civilizations of the past, and if we go back to biblical times, or to the days of ancient Greece and Rome, we read of the famous wells and aqueducts, from which the inhabitants derived their supplies.
The Systhesis Of Camphor From Pinene, Edwin W. Newbury
The Systhesis Of Camphor From Pinene, Edwin W. Newbury
Bachelors’ Theses
The increasing demand for camphor for use in the manufacture of cellulose plastics has led to a great amount of investigation of the nature of this valuable substance and as to its synthesis from materials which are readily obtainable without the necessity for sending overseas for them. At present most of the camphor used in the manufacture of celluloid and allied compounds is imported from Japan or Borneo, where it is obtained, in a rather crude and wasteful fashion, from a species of laurel. Some scientifically operated camphor plantations have been started in the United States.. In one such plantation …