sensors 2 4

Tag: "sensors" at biology news

Researchers Create DNA-Based Sensors for Nano-Tongues and Nano-Noses

...n tubes coated with strands of DNA can create tiny sensors with abilities to detect odors and tastes, accordi...s of a specific molecule." Given the size of such sensors each carbon nanotube is about a billionth of a meter wide, Johnson and his colleagues believe arrays...

Vietnam war technology could aid elephant conservation

Seismic sensors developed to track enemy troop movements during the Vietnam war could help ecologists monitor and conserve elephant populations, according to new research published in the British Ecological Society's Journal of Applied Ecology. Dr Jason Wood and co...

How monarch butterflies are wired for navigation

... connection between the light-detecting navigation sensors in the butterfly's eye and the creature's circadian clock--a critical link if the butterflies are to compensate for the time of day in using their "sun compass." The researchers' techniques include molecular analysis of butterfly brain proteins, as ...

Fat's fate depends on its source

...uired to elucidate the mechanism by which nutrient sensors in the body distinguish between different sources of fat, the researchers said. ### The researchers include Manu V. Chakravarthy, Zhijun Pan, Yimin Zhu, Karen Tordjman, Jochen G. Schneider, Trey Coleman, John Turk, and Clay F. Semenkovich of Washin...

New miniaturised chip dramatically reduces time taken for DNA analysis

... Autònoma de Barcelona has developed new miniature sensors for analysing DNA. The sensors have the same size and thickness as a fingernail and reduce the time needed to identify DNA chains t...

Natural Killers Could Lead to New Hepatitis Treatments

... in the NKT cell's behavior. Receptors are protein sensors that nestle in the membranes of cells and detect external signaling molecules called ligands. When ligands are bound by the receptor, a specific chemical signal is transmitted to the interior of the cell. In the case of NKT cells, the researchers fo...

Purdue researchers use enzyme to clip 'DNA wires'

...ight be harnesses to create devices for computers, sensors and other uses. Self-assembly might be used in the future to create electronic devices at lower cost than is possible with conventional manufacturing processes. Purdue researchers had previously developed a technique for precisely placing strands of...

Molecular thermometers on skin cells detect heat and camphor

...some doubts. Despite expectations that temperature sensors be present in sensory neurons innervating the skin, TRPV3 protein was found in actual skin cells (keratinocytes) and not in the neurons. Now, in the latest issue of the journal Science, the team is reporting definitive evidence that TRPV3 is indeed ...

Duke engineers develop new 3-D cardiac imaging probe

...3-D imaging inherently requires significantly more sensors than 2-D imaging," said Pua. "The original casing held enough cabling for 64 transducer elements whereas our design successfully incorporates 8 times that number." The probe generates ultrasound at 5 million vibrations per second, which, combined wi...

Revolutionary nanotechnology illuminates brain cells at work

...ly applying genetic nanotechnology using molecular sensors to view changes in brain chemical levels. The sensors alter their 3-dimensional form upon binding with the chemical, which is then visible via a process k...

Polymers with copper show promise for implanted sensors

Developing chemical sensors that can be placed in the bloodstream or under the...loodstream, clots form on the surface of implanted sensors or blood vessels contract around them. Sensors implanted under the skin may become walled off by cel...

Camera Traps Catch Eye of the Tiger

... where to set up camera traps, armed with infrared sensors triggered by movement. WWF put 30 camera traps in the forests -- one per tiger home range (about 40 square miles) -- and checks them every 3-4 weeks. Because the cameras have been placed in remote locations, it takes at least a day to hike to each (...

Development of portable infectious disease detector

...t are barely larger than the cells themselves.Most sensors that have been developed to identify toxic agents aresingle purpose. That is, they can identify the presence of a singletoxin, or a limited number of closely related toxins. The ability tomonitor the health of small groups of cells, however, makes it...

Study shows nanoshells ideal as chemical nanosensors

...ates an opportunity to design all-opticalnanoscale sensors -- essentially new molecular-level diagnosticinstruments -- that could detect as little as a few molecules of atarget substance, which could be anything from a drug molecule or a keydisease protein to a deadly chemical agent."About 1/20th the size of...

Taking Aim With Nanoparticle PEBBLEs

...Localized Embedding (PEBBLEs). First developed as sensors to explore and monitor cellular processes, PEBBLEs now hold promise for diagnosing and treating cancer, said Raoul Kopelman, who is the Kasimir Fajans Collegiate Professor of Chemistry, Physics and Applied Physics at U-M. At the 229th national meetin...

1 2 3 4