silver 2 1

Tag: "silver" at biology news

Study shows nanoshells ideal as chemical nanosensors

...nsitieswere studied, as were films containing both silver and gold nanoshells.Through painstaking analysis, Halas and Jackson showed that thenanoshells' 10 billion-fold increase in Raman effect was due entirelyto the interactions of light with individual nanoshells. This ismarkedly different from the patter...

Survey finds silver contamination in North Pacific waters

The highest levels of silver contamination ever observed in the open ocean turn...the University of California, Santa Cruz, measured silver concentrations 50 times greater than the natural background level. Though still well below levels th...

UF researchers kill resistant bugs one bandage at a time

...ep bacteria from becoming resistant to it. Popular silver dressings work well as a bacterial barrier but release ions that allow resistance to develop, Schultz said. The structure of the microbicidal coating and the complexity of the process make it nearly impossible for bacteria to become resistant to it,...

Climate change drives widespread amphibian extinctions

...who took part in the study. "If this cloud has any silver lining, that's it." The new theory for the frogs' decline "leaps over a major roadblock in our understanding," said Sam Scheiner, program director for the National Science Foundation (NSF)'s ecology of infectious diseases program, which funded the r...

Iron critical to ocean productivity, carbon uptake

... as sustained as models predicted. "It wasn't the silver bullet that scientists originally hypothesized," Strutton said. "The carbon export was slower than we thought. It could be the scale was too small, and it could be that the (biological) response was too slow and we didn't wait long enough." Behrenfe...

Honey helps problem wounds

...peutic methods such as the very expensive cationic silver dressings. 'These too are an effective anti-bacter...e Simon. 'However, it is not yet clear whether the silver released from some dressings may lead to side-effects among children.'Effective bacteria killer It ...

Encoded metallic nanowires reveal bioweapons

... basis for such a multiplex device: they are using silver and gold "striped" nanowires as supports for simul...ores of alumina membranes. When deposited gold and silver are alternated in a defined way, nanowires with different characteristic stripe patterns are produce...

Slow brain waves play key role in coordinating complex activity

...m is much more spatially widespread, the size of a silver dollar or larger on the surface of the cortex, and is tied to top-down executive processes like attention and memory. Coupling between these two rhythms could be what gives the brain a way to connect low-level perceptions and actions to high-level go...

Silver bullet: UGA researchers use laser, nanotechnology to rapidly detect viruses

...sing a method they've patented, they place rows of silver nanorods 10,000 times finer than the width of a hu...ure capital and exploring ways to mass produce the silver nanorods. Next year, they plan on moving their enterprise to the Georgia BioBusiness Center, an UGA ...

Active ingredient in common Chinese herb shown to reduce hypertension

...and a retroperitoneal approach was used to place a silver clip to constrict the right renal artery. Sham-operated hamsters and mice underwent the same procedure, except for the placement of a clip. Both sets of hamsters received 50 ¦Ìg of tanshinone IIA/100g of body weight once a day for two weeks. Afte...

Maggots rid patients of MRSA

...m will compare larval treatment with antibacterial silver dressings and the biogun treatment, which uses ionized air to create superoxide radicals and eradicate bacteria. Professor Boulton said: "This is very exciting. We have demonstrated for the first time the potential of larval therapy to eliminate M...

Massive herds of animals found to still exist in Southern Sudan

...ifficult circumstances, disappear. Ironically, the silver lining to this violent time in Sudan has been the animals flourishing.” “Numerous threats in this post-war era face the region, including an enormous amount of extensive seismic exploration for oil in the Sudd that is harming the environment,” add...

Releasing fish for the future

...cently developed for released line-caught snapper, silver trevally, mulloway, sand whiting, yellowfin bream and dusky flathead. The research, costing more than $1.5 million and funded by NSW DPI and the Recreational Fishing Trust (using money from licence fees), is developing protocols designed to maximi...

1