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Hydroxyapatite (IMA name: hydroxylapatite [5]) (Hap, HAp, or HA) is a naturally occurring mineral form of calcium apatite with the formula Ca 5 (PO 4) 3 (OH), often written Ca 10 (PO 4) 6 (OH) 2 to denote that the crystal unit cell comprises two entities. [6]
The New York Times was criticized for the work of reporter Walter Duranty, who served as its Moscow bureau chief from 1922 through 1936.Duranty wrote a series of stories in 1931 on the Soviet Union and won a Pulitzer Prize for his work at that time; however, he has been criticized for his denial of widespread famine, most particularly the Holodomor, the Ukraine famine in the 1930s.
Calcium hydroxyphosphate (calcium phosphate tribasic, tribasic calcium phosphate, hydroxyapatite, HAp) is an inorganic chemical compound that is made up of calcium, hydrogen, oxygen and phosphorus. Its formula is Ca 5 (OH)(PO 4) 3. [1] It is found in the body and as the mineral hydroxyapatite. [citation needed]
The main mineral found in natural tooth enamel is hydroxyapatite rather than the fluorapatite created in the presence of fluoride. Even without fluoride, teeth experience alternating increases and decreases in mineral content, depending upon how acidic or alkaline the mouth is, and depending upon the concentration of other substances in the ...
The New York Times celebrated fifty thousand issues on March 14, 1995, an observance that should have occurred on July 26, 1996. [269] The New York Times has reduced the physical size of its print edition while retaining its broadsheet format. The New-York Daily Times debuted at 18 inches (460 mm) across.
He won the Gerald Loeb Award for magazine writing in 2009 for a New York Times Magazine article, "Obamanomics." [19] He was a winner of the Society of American Business Editors and Writers "Best in Business Journalism Contest" for his The New York Times column in 2009 and 2007. In 2010, he was a finalist for the Pulitzer Prize for Commentary ...
Genta Incorporated was a biopharmaceutical company started in La Jolla, California, which discovered and developed innovative drugs for the treatment of patients with cancer.
Since the mid-20th century, it has been discerned from population studies (though incompletely understood) that fluoride reduces tooth decay.Initially, researchers hypothesized that fluoride helped by converting tooth enamel from the more acid-soluble mineral hydroxyapatite to the less acid-soluble mineral fluorapatite.