Tag: "metal" at biology news

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

...rium oxide catalyst carrying the gold or platinum, metal nanoparticles are not important. Only a tiny amount of the precious metal in non metallic form is needed to create the active catalyst. Our finding will help researchers find...

Lead-based paint is poisoning albatross chicks at Midway Atoll National Wildlife Refuge

...atross chicks on Midway are so high that the toxic metal damages their peripheral nervous systems, leading to a symptom known as "droopwing"--the chicks are unable to hold their wings tucked up against their bodies, and their wings often drag on the ground. It is a classic symptom of lead poisoning, compar...

Novel bacterium detoxifies chlorinated pollutants

... used in dry cleaning operations and degreasing of metal components. Complicating the situation are natural biotic and abiotic processes that transform these solvents to intermediate substances, such as toxic dichloroethenes, and cancer-causing agents, such as vinyl chloride. But in a step toward engineeri...

Researchers engineer low-cost hydrogen catalyst

... nickel-tin catalyst that can replace the precious metal platinum in a new, environmentally sustainable, greenhouse-gas-neutral, low-temperature process for making hydrogen fuel from plants. The new catalyst, together with a second innovation that purifies hydrogen for use in hydrogen fuel cells, offers n...

July 4 fireworks: Why they're brighter than ever

... and gums, while today these have been replaced by metal fuels, explains chemist John A. Conkling, Ph.D., of Chestertown, Md., former technical director of the American Pyrotechnics Association. "These metals produce hotter flames, which produce more photons of emitted light and a variety of more vivid col...

A rare find

...class of cationic, or positively charged, extended metal oxides to be used in anion-based applications. "It...ocess now being used involving the deposition of a metal film by thermal evaporation. The project can be expected to have industrial impact in the manufactur...

A tiny pump promises big time performance

...with on this project is interested in dealing with metal contaminants from nuclear waste," said Zhong. "Their current technology is to go in the field, take samples of contaminated soil, and analyze them back in the lab. What we want to do is make remote controllable portable chip devices that sit in the f...

Cadmium studies suggest new pathway to human cancer

...today reported that cadmium a naturally occurring metal which shows up in food, water and cigarette smoke ...ks, including coal and fertilizers. It is used in metal coatings, plastics and batteries, partly because it does not corrode easily. Although workers in t...

3-D imaging inside living organism, using quantum dots

...ough the bloodstream. Quantum dots are microscopic metal or semiconductor boxes (in this case cadmium selenide-zinc sulfide) that hold a certain number of electrons and, thus, have a wide number of potential applications in electronics and photonics. Writing in the latest issue of the journal Science (Ma...

Misbehaving molecules in ALS

...hell, the SOD1 protein needs to bind to a reactive metal in order to form loops to protect its edges. The ...e the mutant SOD1 protein itself, interfering with metal binding and leaving the protein unprotected. The aggregation theory, on the other hand, maintains...

Gold nanoparticles and catalytic DNA produce colormetric lead sensor

...teristic blue color. In the presence of a specific metal ion, the catalytic DNA will break off individual g...ends upon the initial concentration of contaminant metal ions. By applying the DNA-gold nanoparticle solution to a substrate, the researchers can create a bi...

War on germs gets cutting-edge weapon from ancient world technique

...door knobs, handles and push panels, as well as on metal panels and railings inside the homes elevator....

A kindler, gentler cut for LASIK

...n the 1950s, the microkeratome relies on a mounted metal razor blade to cut the flap in the cornea. Even in very skilled hands, accurate depth and consistent flap thickness can be difficult to control with the device. Flap-related complications occur in as many as 5 percent of microkeratome LASIK cases, of...

Five studies look at risks of differing particulate matter, including exposures on 9/11

...ce for the movement of ultra-fine 30 nm carbon and metal particles from the respiratory tract into the brain. The original work was done using polytetrafluoroethylene fumes, a workplace aerosol consisting of ultra-fine 20 nm particles, but later studies looked at ultrafine carbon particles as surrogates f...

New DNA chip rapidly detects, identifies dangerous pathogens

...e hairpins, with one end "planted" into a layer of metal and the other end hanging down alongside it. This dangling end contains a molecule called a flourophore, which, like the brilliant head of a sunflower, shines brightly when properly lighted. With all of the sunflowers' heads bent down to the ground, ...

Prions offer nanotech building tool

...ook a different approach. Rather than building the metal wire itself, they let prions build a very thin fib.... They then coated these fiber strings with enough metal to make a working electrical wire. In all important respects, these nanowires possess the characte...

A new class of catalysts will help boost production, quality of transportation fuels

...yama will present his keynote address, "Transition metal phosphides: New catalysts for hydroprocessing (Fuel 82)," at 1:35 p.m. on Monday, March 24, in the Convention Center, Room 397. He also will present another paper, "Mechanism of permeation in hydrogen-selective silica membranes (Fuel 129)," at 4:30...

Personal chemical agent detector ready for trials

...bination of new approaches to both semi-conducting metal oxide (SMO) and polymer-coated surface acoustic wave devices (PSAWs) is what allows the detector to have the capability of differentiating the warfare agent threat from the background environment, reducing false alarms. The result of merging the SMO...

Common industrial chemical now linked to male infertility

...le chemical used extensively in the automotive and metal industries as a de-greasing agent. It is also found in adhesives, lubricants, paints, varnishes, paint strippers, pesticides, spot removers and rug cleaning fluids, and has been detected in both underground and surface water sources. Already linked ...

WWII discovery may counter bioterrorists

...pment and clinical implications today of the heavy metal chelating agent, detailed in the March issue of th...gency Medicine. BAL is a medical therapy to remove metal poisonings from the body. "BAL was secretly developed more than six decades ago by biochemists at Ox...

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