materials 2 6

Tag: "materials" at biology news

Scientists discover dozens of new species in 'Lost World' of western New Guinea

...ng at its bower ?a tower of twigs and other forest materials it builds for the mating ritual. The new species of honeyeater, the first new bird discovered on the island of New Guinea since 1939, has a bright orange face-patch with a pendant wattle under each eye. Other discoveries included what may be the lar...

Sex: It's costly but worth it. Just ask a microbe

...g signals costs both partners: one partner uses up materials and energy to produce and transmit the signal, and the other partner gets distracted by the mating signal and loses interest in reproducing on its own." The irony is that despite the high cost of sex there are benefits. "In many microbes, mating a...

Bioactive cement scaffold may improve bone grafts

...the project. "They can tell the difference between materials that are bioactive compared to bioinert polymers. ...nducted cooperative research on dental and medical materials since 1928. ADAF researchers focus on development of new dental materials, while NIST specializes in...

Rice University researchers create 'nanorice'

...pe of enzyme that reacts harmfully with biological materials essential for proper brain function such as serotonin and L-DOPA. Dr. Atamna believes that the combination of functional heme deficiency, which harms mitochondria needed to produce energy, together with the increase in oxidative damage caused by the ...

Alzheimer's study first to explain death of brain cells

...pe of enzyme that reacts harmfully with biological materials essential for proper brain function such as serotonin and L-DOPA. Dr. Atamna believes that the combination of functional heme deficiency, which harms mitochondria needed to produce energy, together with the increase in oxidative damage caused by the ...

Wisconsin scientists find a way to make human collagen in the lab

Of all of the materials that make up our bodies, nothing is more ubiquitous than collagen. It is the most important structural protein in the body, reinforcing connective tissue, bones and teeth, and forming long, fibrous cables to strengthen tendons. Collagen forms sheet...

Protein 'nanosprings' most resilient found in nature

...Marszalek, professor of mechanical engineering and materials science at the Duke Pratt School of Engineering. "...g. AFM is a technique for analyzing the surface of materials all the way down to the level of the atom. Marszalek and Pratt graduate student Gwangrog Lee further...

'Nano-keys' bind cell receptors and trigger allergic reactions

...ngineering; Christopher Ober, Cornell professor of materials science and engineering; Watt Webb, Cornell's Ecke...ineering; and Ulrich Wiesner, Cornell professor of materials science and engineering. ...

New University of Toronto research a 'pore' excuse for engineering

...nsulator," Hatton says. "This is an example of how materials chemistry can provide innovative solutions to the design of novel materials." ...

Waking a sleeping virus

...he information to be read and transformed into raw materials to make new viruses. "A good strategy in fighting viruses is to block the activation of viral genes," says Patrice Morand, a physician at the University hospital and the IVMS. "The drugs we currently use against EBV work that way. The problem is th...

Virginia Tech scientists develop process for creating biocompatible fibers

...al with potential applications where biocompatible materials are required, such as scaffolds for tissue growth ...l mixture of phospholipids and neutral lipids. The materials will spontaneously organize into cylindrical or worm-like strands to form membranes. McKee studied...

New nano-canary in the nanotoxicology coalmine: The body itself

... Likewise, most agree that these incredibly small materials can behave quite differently from conventional materials. Nonetheless, neighborhood stores feature products that promise benefits from these near-atomic level materials, from paints and cosmetics to toothpaste and sunscreens. But, could we be putti...

Relic of life in that Martian meteorite? A fresh look

...sed by living creatures from the Red Planet. The materials have been under intense scrutiny ever since. Scientists at the Carnegie Institution's Geophysical Laboratory, with colleagues,1 have taken a fresh look at how material associated with carbonate globules was created using sophisticated instrumentation...

Predicting success

...l, it acts as a barrier that keeps drugs and other materials from entering the tumor. The method the Institute scientists developed can measure, with a non-invasive MRI scan, whether the fluid pressure in cancer tissues is at levels that could render chemotherapy ineffective. Their research, which led to the...

Researchers get neurons and silicon talking

...squared in size. The group had to find appropriate materials and refine the topology of the chip to make the connection with neurons possible. Biologically NACHIP uses special proteins found in the brain to essentially glue the neurons to the chip. These proteins act as more than a simple adhesive, however. "...

Melanoma vaccine strategy shows promise in laboratory experiments

...e as their primary job the presentation of foreign materials to the immune system, and the expectation is that dendritic cells presenting the BRAFV600E peptide would trigger the killer T cells even more effectively than the monocyte cells used in the current study. Indeed, such prepared dendritic cells might s...

Taking a bite out of a fellow worker helps wasps recruit new foragers

...d completely, placing stress on the colony because materials the colony needs, primarily food, are not coming in. So the colony needs to recruit new workers to make up for the loss," O'Donnell explained. On the final day observers watched each colony, noted the behavior of the marked individuals to see which...

Rice bioengineers pioneer techniques for knee repair

... of toxicity due to the fact that they are made of materials that aren't naturally found in the body. In the newly reported findings, Athanasiou and postdoctoral researcher Jerry Hu, using nothing but donor cells, grew dime-sized disks of cartilage with properties approaching those of native tissue. In a foll...

Carbon nanotube absorption measured in worms, cancer cells

...bes accumulate in living cells, because before the materials can become widely used in society scientists must understand if they'll pass through the food webs and possibly threaten the health of ecosystems and lead to uptake by humans, Petersen said. "This approach has virtually limitless potential for faci...

Microbes convert 'Styrofoam? into biodegradable plastic

...any, utilized pyrolysis, a process that transforms materials by heating them in the absence of oxygen, to convert polystyrene ?the key component of many disposable products ?into styrene oil. The researchers then supplied this oil to P. putida, a bacterium that can feed on styrene, which converted the oil into...

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