Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures. That food is related to illness isn’t a new discovery. In 1945, about65 years ago, government researchers realized that nitrates (硝酸钾), commonly used to ...
reducing sugars, peroxides, nitrites, nitrates and metals in some common excipients and have also identified potential reactions between drug candidates and the reactive impurities in the excipients [11]. Crospovidone is used in many formulations as a ...
New classes of pharmaceuticals In the latter part of the 19th century a number of important new classes of pharmaceuticals were developed. In 1869chloral hydratebecame the firstsyntheticsedative-hypnotic(sleep-producing) drug. In 1879 it was discovered that organic nitrates such as nitroglycerin could...
Sulfuric acid was an essential chemical for dyers, bleachers, and alkali manufacturers. Its production on a large scale required the development of lead-lined chambers that could resist the vapors which were formed when sulfur was burned with nitrates ...
Domestic sewage is also a major source ofplantnutrients, mainlynitratesandphosphates. Excess nitrates and phosphates in water promote the growth ofalgae, sometimes causing unusually dense and rapid growths known asalgal blooms. When the algae die, oxygen dissolved in the water declines because microor...
Meanwhile, the food industry requires chemicals like nitrates and sulfates as preservatives to extend the shelflife of goods you can find at the supermarket. No matter where you look, chemical purity can likely be found in products you rely on each day. ...
–The danger lies in the increase in nitrates, for the peculiar physiology of the ruminant at once poses a critical problem. Ruminative: deeply or seriously thoughtful; brooding; thoughtful. –Volpe is in a ruminative mood, thinking out loud about some of the kids. Rummy: beyond or deviating...
P450s are involved in oxidative metabolism of drugs and xenobi- otics. Physiological levels of CO are usually too low to inhibit P450s, however exogenous exposure to CO can lead to inhibition of P450s isoenzymes such as CYP2D6, CYP3A and CYP2C affecting drug metabolism and vascular tone [...
It inhibits the growth of microbes that cause food spoilage. Other nitrates (for example sodium nitrate) and sulphites (like sodium sulphite) are also effective food preservatives. Like all chemicals in food, in small quantities they are harmless. But in large quantities, they can have ill ...
Nitric acid is heavily used in the laboratory and in chemical industries as a strong acid and as an oxidizing agent. The manufacture ofexplosives,dyes,plastics, anddrugsmakesextensiveuse of the acid. Nitrates are valuable asfertilizers.Gunpowderis a mixture of potassium nitrate, sulfur, andcharcoal...