Archive for August, 2007
Thursday, August 30th, 2007
NEW YORK -- Consumers of antimony appear to be flush with material, sending prices down below the $3,000-a-tonne mark, traders said Tuesday.
"There's been a lack of activity in the market for the past couple of weeks" one U.S. trader said. "A lot of consumers have bought what they need for ...
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Thursday, August 30th, 2007
NEW YORK -- Antimony prices are drifting slightly lower in quiet market conditions, traders said.
U.S. traders quoted antimony in a range of $1.24 to $1.28 a pound ($2,730 to $2,820 a tonne) for good grade material, with off-grade metal in the low $1.20s a pound.
Prices hit a 15-month high of ...
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Thursday, August 30th, 2007
NEW YORK -- The sole U.S. producer of antimony products is turning away business due to a shortage of raw materials.
"The Chinese have forced other antimony oxide producers out of business by increasing the price of metal so that a producer cannot make antimony oxide profitably and compete with Chinese ...
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Tuesday, August 28th, 2007
Stop: Without this element, you'd be paralyzed. It helps move muscles and builds strong bones. It also forms gross soap scum in your shower. What is it? Grab a periodic table (next page) and follow these eight clues to find out. Then turn the page to test your chem IQ.
--Gretchen ...
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Tuesday, August 28th, 2007
Nuclear chemistry is the study of the chemical and physical properties of elements as influenced by changes in the structure of the atomic nucleus. Modern nuclear chemistry, sometimes referred to as radiochemistry, has become very interdisciplinary in its applications, ranging from the study of the formation of the elements in ...
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Tuesday, August 28th, 2007
An improved material system has been developed for rocket engine combustion chambers for burning oxygen/hydrogen mixtures or novel monopropellants, which are highly oxidizing at operating temperatures. The baseline for developing the improved material system is a prior iridium/rhenium system for chambers burning nitrogen tetroxide/monomethyl hydrazine mixtures, which are less oxidizing. ...
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Tuesday, August 28th, 2007
Electron-excitation and translational energies can be selected. NASA's Jet Propulsion Laboratory, Pasadena, California
An arc-jet source of chemically active nitrogen atoms has been developed for use in molecular-beam epitaxy (MBE) to grow such III-V semiconductors as nitrides of gallium, aluminum, and indium. This apparatus utilizes a confined arc to thermally excite ...
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Monday, August 27th, 2007
Tom Otterness was recently honored by New York's Municipal Art Society for his outdoor exhibition of bronze sculptures along Broadway, which punctuated the median strip, block-by-block, from Columbus Circle to 168th Street.
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Monday, August 27th, 2007
Here is one of our occasional reports from the world of art, which, as regular readers will know, has come a long way from the casting of bronze horses and the painting of still lifes. Recall that the death of the great Red Sox hitter Ted Williams, back in July ...
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Monday, August 27th, 2007
Holland (Oriental Institute of the U. of Chicago) present the final report from his Oriental Institute concerning the archaeological and landscape investigations at the Bronze Age settlement of Tell es- Sewyhat, Syria, located on the upper Euphrates Rive at the northern end of the present Lake Assad, and includes material ...
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