Tag: "platinum" at biology news

UNC Researchers Develop New Way To Measure Acid Level Of Body Fluids

...ayer of iridiumoxide bonded by electroplating to a platinum surface. This is then covered witha protective polymer. The electrode can be bonded to a variety of materials.According to Cascio, it would be "fairly simple" to attach a pH electrode to thetype of catheter commonly used for studying the electrical a...

New research proves fullerene can be cosmic carbon carriers

...wn to contain extraterrestrial iridium, which is a platinum group element, and highly shocked minerals. This sediment layer marks a period of abrupt change in Earth's biology and geology, characterized by mass extinction of the dinosaurs, now generally attributed to the impact of a carbonaceous asteroid that ...

Bionumerik reports data on two novel supercomputer engineered anticancer agents

...common and often severe toxicities associated with platinum and taxane administration without inhibiting the a...ablishes the ability of BNP7787 to protect against platinum and taxane induced toxicities. It has been determined that BNP7787 and its metabolites selectively ...

Tiny sampling device promises big results for detection and analysis of chemicals

...med by etching the silicon away, holds a patterned platinum heater, called a microhotplate. A thin layer of an...d pads surround the device and help to connect the platinum heater electrically to the macroscopic world. The micro preconcentrator operates much like its l...

December Geology and GSA Today highlights

...omalously high concentrations of iridium and other platinum group elements (PGEs) (reported in Simonson et al., Geology, 1998, v. 26, p. 195-198). New analyses of samples from the one late Archean layer found to date in South Africa indicate that it, too, is enriched in iridium and other siderophile elements ...

Amazing light emission properties of gold lead to many applications

...drugs will be as useful in prostate cancers as the platinum drugs are," Fackler says. "To this time, we have not found any that have been as successful as the platinum compounds, but there are still a lot of new compounds that have been generated with gold that may we...

UCSD researchers create a home for liver cells on a silicon chip

...ometers in diameter. Using hydrogen fluoride and a platinum electrode, researchers in Sailor's laboratory are able to produce tiny cylindrical holes in the chip by electrochemically dissolving parts of the silicon away. "The materials are made by an electrochemical etching process similar to the react...

Taming chaos? German scientists force checkerboard patterns from turbulence, suggesting better control strategies

...bon monoxide to form fractal-like designs across a platinum surface, similar to a checkerboard pattern. These ...gas phase onto a catalytic, or chemically reactive platinum surface. Once adsorbed, the carbon monoxide molecules began diffusing and reacting with oxygen to pr...

BioNumerik & Grelan present data on novel chemoprotecting agent

...oxic effects of chemotherapies such as taxanes and platinum based drugs can seriously limit their effective us...nd serious side effects associated with taxane and platinum drugs, which are widely used for treating cancer. Based on existing preclinical and clinical data a...

Coils slash death/disabilty from brain aneurysms

...nto the brain to fill the aneurysm there with tiny platinum coils. The coils are like "miniature slinkies that are folded gently into the aneurysm like a ball of yarn one by one to stop the bleeding," says Murphy. Noting that the procedure also can be used to prevent aneurysms from bursting, he adds, "With...

Nanoparticles could aid biohazard detection, computer industry

...eir purest forms, precious metals such as gold and platinum are among the most coveted substances in the world...llowed the group to deposit nanoparticles of gold, platinum and other metals in specific areas of the semiconductor's surface. Rather than a film that blankets ...

American Physical Society March Meeting 2003

...aust fumes. This is done by passing the gas over a platinum surface that encourages (or catalyzes) the chemical reaction turning carbon monoxide into carbon dioxide, a safer emission. However, understanding the process of the catalysis is challenging because it happens on a small physical scale over very brie...

Researchers engineer low-cost hydrogen catalyst

...ISON It is thousands of times less expensive than platinum and works nearly as well. Writing this week in th...l-tin catalyst that can replace the precious metal platinum in a new, environmentally sustainable, greenhouse-gas-neutral, low-temperature process for making hy...

Tufts researchers find new cost-effective catalyst for hydrogen production for fuel cells

... to make hydrogen from fossil fuels using far less platinum or gold than current fuel processing technology ha... a lot of time studying the properties of gold and platinum nanoparticles that are used to catalyze the reaction of carbon monoxide with water to make hydrogen ...

Fuel-cell microbes' double duty: treat water, make energy

... anodes, Nafion as the protonexchangemembrane, and platinum on the carbon cathode. But we're alreadymaking progress on that. Substantially cheaper systems are justaround the corner." Meanwhile, amid the slime on the anodes, countless and variousbacteria play distinctive roles in the breakdown of thewastewat...

Drug combo effective in advanced breast cancer

...ents Taxotere, Navelbine, Cyclophosphamide and the platinum salts Cisplatin and Carboplatin increased the activity of Herceptin in lab models with HER2/neu amplification. In other words, Herceptin and the chemotherapy agents each made the other more effective, a synergistic effect. The laboratory studies poin...

Other highlights in the May 19 JNCI

...on of docetaxel and trastuzumab with either of two platinum salts, cisplatin or carboplatin. In each trial, th...binations had a similar toxicity to docetaxel plus platinum salts alone, and there was a low incidence of cardiac dysfunction. In addition, overall response rat...

Drug prevents chemotherapy-induced hearing loss, study finds

..., prevents ototoxicity by binding to the cisplatin platinum molecules, rendering them inactive. It also is a known free radical scavenger, hunting down these highly reactive atom clusters believed to cause similar hearing loss caused by noise trauma, and it boosts levels of an intracellular antioxidant called...

Bright idea could doom cancer and viruses, say Purdue scientists

... damage DNA in living cells in a manner similar to platinum chemotherapy drugs, but with one exception - it remains benign until irradiated with a light beam. "Anticancer therapies could, in theory, be developed using such photo-activated rhodium complexes," Morrison said. "The interior of the body is dark, ...

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