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Latest Acids Stories

2008-07-07 12:00:48

U.S. scientists say they've found a tiny amount of inhaled or intravenous hydrogen sulfide greatly improves the survival of rats with extreme blood loss. Fred Hutchinson Cancer Research Center researchers said they used hydrogen sulfide to induce a state of reversible metabolic hibernation as a way to reduce death from insufficient blood supply to organs and tissues in a rat model of lethal hemorrhage. The study determined 75 percent of rats given inhaled hydrogen sulfide and 67 percent...

2008-07-04 00:00:22

By Ken Ward Jr. Staff writer A federal judge on Wednesday quizzed a toxicologist who says DuPont Co. has poisoned Parkersburgs city water supply with dangerous levels of the toxic chemical C8. U.S. District Judge Joseph R. Goodwin questioned toxicologist David Grays conclusion that residents are at increased risk of illness and in need of preventive medical monitoring. Gray, an expert witness for residents, testified for most of the day in a case that seeks to make DuPont pay for clean...

2008-07-02 06:00:47

By Smith, S Takacs, I; Murthy, S; Daigger, G T; Szabo, A ABSTRACT: A phosphate complexation model is developed, in an attempt to understand the mechanistic basis of chemically mediated phosphate removal. The model presented here is based on geochemical reaction modeling techniques and uses known surface reactions possible on hydrous ferric oxide (HFO). The types of surface reactions and their reaction stoichiometry and binding energies (logK values) are taken from literature models of...

2008-07-01 15:00:54

SEATTLE, July 1 /PRNewswire/ -- For the first time, researchers have demonstrated that the administration of minute amounts of inhaled or intravenous hydrogen sulfide, or H2S -- the molecule that gives rotten eggs their sulfurous stench -- significantly improves survival from extreme blood loss in rats. Cell biologist Mark B. Roth, Ph.D., and colleagues in the Basic Sciences Division of Fred Hutchinson Cancer Research Center, in collaboration with surgeon Robert K. Winn, Ph.D., and...

2008-06-25 12:03:01

U.S. environmental scientists say they have created one of the most comprehensive databases on the effects of acid rainfall. Prior to enactment of the U.S. Clean Air Act, unhindered industrial emissions were released into the air across the nation, with many of the chemicals falling back to Earth in the form of acid rain. Although scientists have long known acid rain can severely decrease the diversity of plant and animal communities in fresh water lakes and ponds, little is known about...

2008-03-26 23:34:47

Science fiction usually sticks hibernating spaceflyers in glowing capsules of goo, but a real-life ingredient for suspended animation may not be too far off, scientists say. Hydrogen sulfide is the key stinky compound in rotting eggs and swamp gas. New research shows it can slow down a mouse's metabolism, or the consumption of oxygen, without dampening the flow of blood. "A little hydrogen sulfide gas is a way to reversibly and, apparently, safely cut metabolism in mice,"...

2008-02-09 03:00:22

By Chow, Judith C Doraiswamy, Prakash; Watson, John G; Chen, L-W Antony; Ho, Steven Sai Hang; Sodeman, David A ABSTRACT Recent improvements in integrated and continuous PM^sub 2.5^ mass and chemical measurements from the Supersite program and related studies in the past decade are summarized. Analytical capabilities of the measurement methods, including accuracy, precision, interferences, minimum detectable levels, comparability, and data completeness are documented. Upstream denuders...

2007-10-30 06:00:34

By Bereket, G (Aldemir), S Pakdil; Ogretir, C In the present study the inhibitive behaviour of 1H-imidazole, 1- methyl imidazole, imidazolidin-2-one, 4-(imidazole-1- yl)acetophenone, 4-(imidazole-1-yl) phenol and L-hystidine on the corrosion of copper in 0.1 M HCl has been investigated by potentiodynamic polarisation and polarisation resistance techniques. Except for 2-imidazolidone, the tested imidazole derivatives were found to behave as cathodic inhibitors. 1-methyl imidazole, 4-...

2007-09-28 06:00:00

By Xiao, Yabing Ling, Jie; Qian, Shahua; Lin, Anqing; Et al ABSTRACT: A novel method of preconcentration of trace arsenite and arsenate by using titanium dioxide nanoparticles as adsorbent was described. The concentrations of preconcentrated arsenite and arsenate were determined by a silver diethyldithiocarbamate spectrophotometric method without desorption. Batch adsorption experiments were carried out as a function of the pH, contact time, amount of titanium dioxide nanoparticles, and...

2006-07-12 17:29:12

HOUSTON (Reuters) - At least 21 people were taken to hospitals after a chemical leak at a northeast Houston warehouse on Wednesday afternoon, according to Harris County Hazardous Materials spokesman. Over 200 people at the warehouse were checked for symptoms of exposure to hydrobromic acid, the spokesman said. The leak was caused by a forklift puncturing a drum of the substance. A Houston television station said the warehouse is owned by Nailor Industries, which the spokesman...


Latest Acids Reference Libraries

0_ad99fed827882160f5c8221dfda576f1
2005-05-25 17:01:27

Sulfur (or Sulphur; see spelling below) is the chemical element in the periodic table that has the symbol S and atomic number 16. It is an abundant, tasteless, odorless, multivalent non-metal. Sulfur, in its native form, is a yellow crystaline solid. In nature, it can be found as the pure element or as sulfide and sulfate minerals. It is an essential element for life and is found in several amino acids. Its commercial uses are primarily in fertilizers but it is also widely used in gunpowder,...

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Word of the Day
attercop
  • A spider.
  • Figuratively, a peevish, testy, ill-natured person.
'Attercop' comes from the Old English 'atorcoppe,' where 'atter' means 'poison, venom' and‎ 'cop' means 'spider.' 'Coppa' is a derivative of 'cop,' top, summit, round head, or 'copp,' cup, vessel, which refers to 'the supposed venomous properties of spiders,' says the OED. 'Copp' is still found in the word 'cobweb.'
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