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Tag: "sensing" at biology news

Researchers discover way to make cells in the eye sensitive to light

... view of theeye is that it contains only two light sensing systems, the rods andcones. However, over the last few years it has become increasinglyaccepted that we have a third system, which uses melanopsin, that haslain undetected during decades of vigorous scientific investigation."Professor Hankins and Dr ...

Ancient olfaction protein is shared by many bugs, offering new pest control target

...ons, indicating that these proteins participate in sensing particular types of odors. However, one odorant receptor protein, Or83b, is found in almost all olfactory neurons and serves a general function in detecting odors. When the gene for Or83b is deleted, the flies can't smell. In the new study, Vosshall...

Study shows nanoshells ideal as chemical nanosensors

...oparticles known as nanoshells canenhance chemical sensing by as much as 10 billion times. That makesthem abo... this effect, openingthe door for new, all-optical sensing applications."Not only did we find that nanoshells are extremely effective atmagnifying the Raman si...

Highly adaptable genome in gut bacterium key to intestinal health

...e, B. theta has evolved an elaborate mechanism for sensing changes in its nutrient landscape and quickly changing its dietary preferences so that it can use whatever is most plentiful. In fact, it can call on a larger repertoire of genes related to carbohydrate digestion than any other microbe we know of." ...

Beyond lithium for bipolar disorder

...rphan receptor"--that is, its cellular function in sensing external chemical signals is unknown. The researchers also found that the gene called AD-CYAP1 was upregulated in the treated brain slices. This gene codes for a signaling molecule called PACAP in the brain and is known to be close to a chromosomal ...

Sequencing of marine bacterium will help study of cell communication

...cence. One of the longest studied models of quorum sensing is the bioluminescent marine bacterium V. fischeri...tem of the cell-to-cell communication. "Our quorum sensing research group at Virginia Tech is working to build a more complete understanding of the molecular p...

Programmable cells: Engineer turns bacteria into living computers

...that the genetic programming techniques work, this sensing system could be useful for the detection of chemicals or organisms in laboratory tests. "The bull's-eye could tell you: This is where the anthrax is," said Weiss. The researchers published their results in the April 28 issue of Nature. In addition t...

To control germs, scientists deploy tiny agents provocateurs

...iofilm formation. Attempting to manipulate quorum sensing in both plant and animal bacteria, Blackwell and h...ghbors," says Blackwell, "but some types of quorum sensing are beneficial, so we are simultaneously searching for compounds that selectively turn on group beha...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...orth in search of water. It could be that they are sensing underground vibrations generated by thunder." Fro...ding consistent with the notion that elephants are sensing seismic signals when they press their feet on the ground. O'Connell-Rodwell also is applying her in...

Finding hidden invaders in a Hawaiian rain forest

...r, commented: "This is the first time where remote sensing showed me something new concerning how an ecosystem works. Up to this point, remote sensing has been invaluable for understanding how features or processes that have been observed in one or a ...

Understanding how bacteria communicate may help scientists prevent disease

...ed Universities to continue his research on quorum sensing in bacteria. He is modeling the sequence of events...s with Vibrio cholerae as a model bacteria, quorum sensing appears to be a universal process in bacteria. So what he learns about the communication process kno...

Researchers use 3-D imaging system to unveil swimming behavior of microscopic plankton

.... Revealing those benefits and the nature of depth sensing will be a major and exciting challenge for future research in zooplankton ecology and evolution." ...

Nose odors and mouth odors: The brain distinguishes

...to odors because of the well-known phenomenon that sensing an odor "orthonasally" through the nose triggers t...on that it is coming from the outside world, while sensing it through the mouth--or "retronasally"--causes the perception that it arises from the mouth. "The ...

Envisat and ERS-2 reveal hidden side of Hurricane Rita

...issions cannot always take place. Satellite remote sensing provides a critical alternative approach. "It is critical for weather forecasters to obtain reliable characterization of the eye wall dimension and the radii of gale- tropical storm- and hurricane-force winds in order to provide skilful forecasts a...

On a wing and a prayer - Alaska researchers seek clues to bird flu

... Buck Sharpton, UA president's professor of remote sensing plan to create the first Web site of georeferenced avian influenza data. "We knew about (bird) flu because Kevin Winker has been talking about flu for years," said George Happ, Director of the IDeA Networks for Biomedical Research Excellence (INBRE)...

NCAR analysis shows widespread pollution from 2004 wildfires

...ns from the fires, the research team used a remote sensing instrument known as MOPITT (Measurements of Pollution in the Troposphere) that is operated by NCAR and the University of Toronto and flown on NASA's Terra satellite. The scientists simulated the transport of the pollutants emitted by the fires and th...

Researchers find Amchitka seafood safe for now

...ditional new information. By using advanced remote sensing to explore the rock substructure, it has found clear evidence that the likely path to the sea of any nuclear material that leaves the cavities created by the nuclear test shots will travel more slowly than previously thought. Challenge for the Futur...

UT Southwestern researchers develop screening test for cells that activate immune system

...ered DCs to express a fluorescent signal only when sensing activation signals so that you can identify immuno-stimulatory agents very easily," said Dr. Takashima. Immuno-stimulatory agents launch the immune system. The research appears on Blood magazine's online Web site and will appear in a future issue. ...

CO2 sensing proves critical for fungal pathogens to adapt to life in air and human hosts

...an body, and they provide new evidence for how CO2 sensing and metabolism utilize evolutionarily conserved en...otosynthesis in algae and plants; in addition, CO2 sensing and transport are involved in many cellular processes and virulence attributes of diverse pathogenic...

Student scientists create living bacterial photographs

...hat normally senses salt concentration. Instead of sensing salt, the bacteria could sense light. The light receptor was then connected to a system in the bacteria that makes pigments. When light strikes the new receptor, it turns off a gene that ultimately controls the production of a colored compound in th...

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