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Vasectomy may put men at risk for type of dementia

...ale patient rushed into the room and asked the men sitting there, "OK, guys, how many of you have PPA?" Nine hands went up. "How many of you had a vasectomy?" he demanded next. Eight hands shot up. Weintraub and her team of researchers surveyed 47 men with PPA who were being treated at Northwestern's ...

Bacteria could steady buildings against earthquakes

...liquid, with disastrous consequences for buildings sitting on them. Currently, civil engineers can inject chemicals into the soil to bind loose grains together. But these epoxy chemicals may have toxic effects on soil and water, said Jason DeJong, an assistant professor of civil and environmental engineering...

Lizards 'shout' against a noisy background

...ole lizards signal ownership of their territory by sitting up on a tree trunk, bobbing their heads up and down and extending a colorful throat pouch. They can spot a rival lizard up to 25 meters away, said Terry Ord, a postdoctoral researcher at UC Davis who is working with Judy Stamps, professor of evolutio...

Hopkins researchers discover how brain protein might control memory

...er forgotten, such as that cigarette craving while sitting in a bar, a better understanding of how these memories form promises hope that there might be a way in the future to forget them entirely. ...

With record resolution and sensitivity, tool images how life organizes in a cell membrane

...oxer compared the concept to learning about people sitting in chairs in a room to the organization of individ...ver there is empty... I'd like to know that you're sitting in a chair and that that chair is different from that [other] chair. And that's what's been missing....

Pathway toward gene silencing described in plants

... localization allowed us to say which proteins are sitting on the DNA that give rise to the siRNAs and also the loci that are modified by the siRNAs," Pikaard said. Pontes found the other half of the team located within a special nuclear compartment known as the nucleolus, long known to be the production c...

Cigarette smoke blocks cell repair mechanism, University of Florida study shows

...r cancers to develop. Once the gene is damaged and sitting there it's going to provide some harmful effect later on." Jose Russo, M.D., a researcher at the Fox Chase Cancer Center in Philadelphia who has studied how breast epithelial cells transform after exposure to the chemical benzo[a]pyrine, which is f...

How plants avoid feeling the burn

...he microscope room became like a cave, where I was sitting for hours and hours in the dark," said Fisher. For Fisher and the rest of the team, however, the main satisfaction was being able to break down a complex process to understand its simplest components and produce a groundbreaking discovery. ...

Can dogs smell cancer?

...e a positive identification of a cancer patient by sitting or lying down directly in front of a test station containing a cancer patient sample, while ignoring control samples. Standard, humane methods of dog training employing food rewards and a clicker, as well as assessment of the dog's behavior by obser...

Lactic acid not athlete's poison, but an energy source - if you know how to use it

... microscope, the two scientists saw these proteins sitting together inside the mitochondria, attached to the mitochondrial membrane, proving that the "intracellular lactate shuttle" is directly connected to the enzymes in the mitochondria that burn lactate with oxygen. "Our findings can help athletes and tr...

Researchers: Treated wood poses long-term threat

...treated wood only continued leaching arsenic while sitting in simulated landfills. The papers appeared in the online version of the journal Environmental Science & Technology, Research ASAP. The bulk of the funding for the research came from the Florida Center for Solid and Hazardous Waste Management, a...

Why Christmas trees are not extinct

...ly as it flows through other trees. "When you are sitting around and admiring your Christmas tree, consider that it owes its existence in part to this clever microscopic valve," says John Sperry, a University of Utah biology professor who led the research team. "Without these valves, conifers could be much ...

Scientists discover the molecular switch for nerve cells' insulating jelly rolls

... gene into the unmyelinated axons. Instead of just sitting on the axons, the Schwann cells now produced thick myelin sheaths around them. So it appears that the gene instructs the Schwann cells to build the myelin wrap. Dr. Salzer's group is investigating whether neuregulin has the same effect on myelinati...

'Shifty-eyed' Monkeys Offer Window Into Brain's Social Reflexes

...ful, said Platt. 'It's really striking when you're sitting there, and you look at these faces pop up,' he said. 'You feel yourself wanting to look in that same direction.' Platt said that the finding offers the promise of a manipulable animal model of 'social attention' -- how the human brain assesses the go...

Aircraft Cabin Ventilation Influences The Transmission Of Diseases In-flight

...ngers within the aircraft cabin is associated with sitting within two rows of a contagious passenger for a flight time of more than 8 hours. This is believed to be relevant to other airborne infectious diseases. However, in one outbreak of SARS, passengers as far as seven rows away from the source passenger ...

Migratory songbirds have a specialized night-vision brain area

...ent of moonlight. They waited until the birds were sitting quietly to eliminate brain activity from movement. The researchers then quickly preserved the birds' brains, and in Jarvis's laboratory analyzed the brain structures for the active expression of two genes called ZENK and c-fos that signal activity in...

Purdue proves concept of using nano-materials for drug discovery

...imeter square that holds thousands of tiny vessels sitting on top of a material that contains numerous pores. This "nanoporous" material makes it possible to carry out reactions inside the vessels. The goal is to produce "laboratories-on-a-chip" less than a half-inch square that might contain up to a millio...

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