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Tag: "neutral" at biology news

New Study from Affymetrix Laboratories Points to Changing View of How Genome Works

...croarrays are designed and interpreted. By using a neutral approach to array design, tiling arrays include all non-repetitive sequence from a given genome, not just the hand-selected regions that were previously thought to be important. With the inclusion of all genomic sequences, microarrays can now be used...

Probing The Promise And Perils Of Nanoparticles

...ays, such as modifying their surfaces to make them neutral instead of charged, the scientists found. And, added Banaszak Holl, "not only does engineering make them less harmful, but it also makes them better at what we want them to do. You don't lose anything; it's all a gain." More recently, Leroueil studi...

UF Researchers Map Bacterial Proteins That Cause Tooth Loss

... proteins produced by the bacteria when grown in a neutral medium. Bacterial proteins from the two conditions were separated using a new technique called Multidimensional Protein Identification Technology, or MudPIT. Once separated, mass spectrometry was used to measure each protein’s mass and charge, ident...

Probing the promise and perils of nanoparticles

...ays, such as modifying their surfaces to make them neutral instead of charged, the scientists found. And, added Banaszak Holl, "not only does engineering make them less harmful, but it also makes them better at what we want them to do. You don't lose anything; it's all a gain." More recently, Leroueil studi...

Successful Test Of Single Molecule Switch Opens The Door To Biomolecular Electronics

...ule the team tested has three electrical states: a neutral state where it is an insulator, a second state where electrons are removed to oxidize the molecule and make it a conductor, and a third state where more electrons are removed and turn it back into an insulator. By measuring the connected molecule in ...

ORNL, UC Berkeley unravel real-world clues to Earth's mysteries

...d Mine near Redding. A pH level of 7 is considered neutral and most proteins prefer pH levels between 5 and 7. The water trickling from the mine has a pH of about 0.8 and a temperature of 107 degrees Fahrenheit. "This microbial community is thriving at the extreme edge," said Bob Hettich, a co-author and me...

Green catalyst destroys pesticides and munitions toxins, finds Carnegie Mellon University

...nols because they work at ambient temperatures and neutral pH," said Collins. "Existing detoxification methods are inefficient and work only under acidic conductions. Our method can be used over a much broader pH range, including wastewater pH conditions." Fe-TAMLs already have shown promise in killing a s...

When in danger humans are similar to a deer in the headlights

...ifferent categories. They were: pleasant (sports), neutral (objects), and unpleasant (injured or mutilated hu...asant/mutilation block of pictures compared to the neutral pictures. The number of heartbeats per minute was also lower after viewing the mutilation pictures t...

Living with salt

...hat don't tolerate salt sport a negative/positive/ neutral mix. This and other unique structural features may enable the algal carbonic anhydrase to be active in the presence of salt, though not dependent on it. In a surprise twist, the researchers discovered that one other known carbonic anhydrase - found i...

Acid water in East Java threatens biodiversity and local welfare

... water at various locations. She observed that the neutral river water contained normal aquatic fauna, but th... to prevent the crater water from mixing with both neutral rivers. She believes that this could be realised by channelling the flow of acidic water from the cr...

Gene controls whether fear is a factor

...e laboratory, fear can be conditioned by linking a neutral stimulus, such as a light or sound, to something u...en exposed normal and stathmin-deficient mice to a neutral tone while delivering a mild electric shock. While both groups displayed some fear response by freez...

The brain is broadly wired for reproduction

... males to clean bedding, which was thought to be a neutral stimulus. They found that pheromones triggered responses in neurons upstream of GnRH neurons in both odor and pheromone relay areas. "This suggests that there is a redundancy in pheromone detection, with at least some pheromone information being con...

New technique helps researchers determine amino-acid charge

... a positive charge upon binding protons and become neutral upon releasing them. "One thing is the proton affinity of an amino-acid residue when the amino acid is dissolved in a lot of water in, say, a glass beaker; another thing is the affinity for protons in the complex microenvironment presented by a memb...

Great (taste) expectations: Study shows brain anticipates taste, shifts gears

...ery bitter taste. A "zero "cue corresponded with a neutral taste, and a "plus sign" with a pleasant, sugary taste. The cues, according to Nitschke, were flashed to subjects just prior to the administration of a few drops of liquid. But in the study, the cues would not always match the taste they were said t...

Natural selection at single gene demonstrated

...s, led a group that sought to replace the standard neutral model, a common but unrealistic test for natural s.... "Do we now have enough data to see the standard neutral model wasn't appropriate?" Toomajian asked. "We know something more now about how the population has...

Virginia Tech scientists develop process for creating biocompatible fibers

..., lecithin, a natural mixture of phospholipids and neutral lipids. The materials will spontaneously organize into cylindrical or worm-like strands to form membranes. McKee studied this self-assembly and conducted rheological experiments to fundamentally understand the association of small molecules, then h...

How 'hot' emotional brain interferes with 'cool' processing

...ges such as injured people or aggressive behavior; neutral images such as people shopping or working; and scr...and deactivation of the dorsal system than did the neutral or scrambled images, they found. But most importantly, they found graded behavioral effects of the ...

Face perception is modulated by sexual orientation

...angry faces) evoke stronger neural activation than neutral faces, presumably as a result of their biological importance. It is currently unknown, however, whether the response to faces is modulated by gender or sexual orientation. Social communication requires the accurate analysis of the intentions of othe...

Statins have neutral effect on risk of cancer

...e and death and found no impact." "Statins have a neutral effect on cancer and cancer death risks in randomized controlled trials," the authors write in conclusion. "We could find no type of cancer that statins benefited or subtype of statin that reduced the risk of cancer. ...

Manchester scientists create new bio-gel for 3D cell culture

...reated a new type of 'bio-gel' which provides a pH neutral environment for culturing cells in 3D, as publishe...d Materials (March 2006). The gel is the first pH neutral material made from combinations of dipeptides (pairs of amino acids) to provide an environment in wh...

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