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Tag: "coating" at biology news

Carnegie Mellon scientists use 'green' approach to transform plastics manufacturing

...r. However, if the target application -- such as a coating for a biomedical stent -- absolutely requires the removal of residual catalyst, companies will now have much less of it to take out, significantly lowering removal costs, according to the authors. The new ATRP technique also allows for production ...

Edible coatings will be the packaging of the future

...r alternatives in the last few years is the edible coating ?a transparent film that covers the food item and ...eir composition. Once the ideal plastifier for the coating was determined, it was observed that, in order to improve malleability, it was necessary to introduc...

Widely used iron nanoparticles exhibit toxic effects on neuronal cells

...Rita Finoñes began their laboratory experiments by coating iron oxide nanoparticles with DMSA (dimercaptosucc...t that polymerizes on the particles' surface. This coating keeps the particles from clumping together in an aqueous solution, and facilitates their engulfment ...

Coated nanoparticles solve sticky drug-delivery problem

... and his colleagues decided to look for a chemical coating that might mimic the characteristics of a virus. "We found that the viruses that got through had surfaces that were attracted to water, and they had a net neutral electrical charge," said Samuel K. Lai, a Johns Hopkins chemical and biomolecular en...

DNA layer reduces risk of reserve parts being rejected

...en patented. Van den Beucken reasoned that a DNA coating should have a lot of advantages. Such a coating approximates the body's own material with the result that a less intense immune response occurs. Fur...

Pregnancy hormone key to repairing nerve cell damage

...rmone is responsible for rebuilding the protective coating around nerve cells. In a paper to be published in the February 21 issue of The Journal of Neuroscience, a team of researchers from the U of C's Faculty of Medicine reports that a study conducted on mice found that the hormone prolactin encourages th...

Phthalates now linked to fat, related health risks

...ften plastic tubing, PVC, and are also used in the coating of some timed-release medicines. More than 75 percent of the United States population has measurable levels of several phthalates in their urine, according to the study. "Unfortunately, there’s still a lot to learn about phthalates," Stahlhut ...

Researchers discover gene crucial for nerve cell insulation

...h several genes interact to create myelin, a fatty coating that covers nerve cells and increases the speed and reliability of their electrical signals. The discovery has implications for understanding disorders of myelin production. These disorders can affect the peripheral nervous system—the nerves outsi...

Brain's white matter -- More 'talkative' than once thought

...elin speeds electrical impulses. Cells lacking the coating fire 20 to 90 times slower than cells coated with myelin. Myelin loss is well known to impair signaling and information processing, causing nerve cells to die and creating such neurodegenerative conditions as multiple sclerosis. Bergles speculates...

NASA-funded robotic sub finds bottom of world's deepest sinkhole

...ed numerous samples of water and the gooey biofilm coating the cenote’s walls. "We’re very pleased about the performance of the DEPTHX system," said David Wettergreen, an associate research professor who headed Carnegie Mellon’s contingent of the research team. "We hit our technical objectives in creating...

Now, self-healing materials can mimic human skin, healing again and again

...nal steps, the researchers deposit a brittle epoxy coating on top of the substrate, and fill the network with...id healing agent. In the researchers’ tests, the coating and substrate are bent until a crack forms in the coating. The crack propagates through the coating ...

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