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Tag: "surfaces" at biology news

Duke Chemists Isolating Individual Molecules Of Toxic Protein In Alzheimer's, Parkinson's Disease

...e microscopes use a sharp microscopic tip to image surfaces and detect energy differences by mechanically probing molecular surfaces. In a poster presentation at the American Chemical Society's annual meeting, the researchers will describe the first biophysical analysis of interactions between monomers that ...

New studies suggest airborne SARS transmission is possible

...her environmental contamination of hospital air or surfaces could explain the ongoing risk of SARS coronavirus transmission to health care workers. To answer this question, they collected patient information and environmental samples from the SARS units of four Toronto hospitals. SARS coronavirus was detecte...

Study shows nanoshells ideal as chemical nanosensors

...ed almost three decades ago thatroughened metallic surfaces could enhance Raman scattering signals byfactors of 1 million, this "surface-enhancement" effect has beendifficult to control, predict, and reproduce for practical sensingapplications. Now, Rice researchers have shown that nanoshells canprovide large...

Open microfluidic and nanofluidic systems

... which have recently been developed, are substrate surfaces covered by molecular monolayers that can be switch...d Lipowsky Wetting morphologies at microstructured surfaces PNAS 102, 1848-1852, February 8, 2005, 10.1073/pnas.0407721102 ...

Probing The Promise And Perils Of Nanoparticles

...rimers in particular ways, 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 rec...

Genetically modified natural killer immune cells attack, kill leukemia cells

...y modified the K562 cells so they carried on their surfaces many copies of two different proteins, 4-1BBL and IL-15. The genetically modified K562 cells quickly stimulated the expansion of the NK cell population to more than10,000 times their original number. The technique triggered growth of NK cells specifi...

UAB scientists discover the origin of a mysterious physical force

...inting. However, when the water is in contact with surfaces that create small electric fields, such as chemical compounds like those found in many detergents, this is no longer the case: the water molecules have a remarkable capacity to organise themselves into complex structures that are strongly orientated ...

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