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Tag: "vibrations" at biology news

Protein enables discovery of quantum effect in photosynthesis

...ve been impossible without collaboration. Good vibrations "We have obtained the first direct evidence that remarkably long-lived wavelike electronic quantum coherence plays an important part in energy transfer processes during photosynthesis," said Fleming, the principal investigator for the study. "Thi...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...ll present growing experimental evidence that wall vibrations and thickness are important (4pMU2). REDUCING NOISE IN MRI SCANNERS Magnetic resonance imaging (MRI) scanners are becoming an increasingly useful medical tool. However, they produce very loud noise that may pose a hazard to both participants a...

Decoding protein structures helps illuminate cause of diabetes

... says. Infrared laser beams can detect the minute vibrations and identify characteristic patterns to deduce protein structures. A few years ago, Zanni's team built the first device capable of designing infrared laser beams with a computer. The team has now simplified and speeded up the process with an au...

Scientists identify molecular cause for one form of deafness

...waves cause the basilar membrane to vibrate. These vibrations stimulate hair cells, which then trigger nerve imp...ts within the hair cells, impairing the passage of vibrations and resulting in deafness. Filamentous actin (F-actin) is a rod-like protein that provides structu...

Termites get the vibe on what tastes good

...differentiate between food sources is based on the vibrations of the food that the termites are eating, although... attempt to determine precisely what aspect of the vibrations termites are responding to in assessing food. "If we understand how they use vibrations to assess ...

Frog’s ear canal may provide insights for understanding human hearing loss

...remely lightweight in order to transmit ultrasonic vibrations to the inner ear. The presence of an ear canal not only protects A. tormotus' thin and fragile eardrum from the environment, but also lessens the distance between the eardrum and the inner ear, thus allowing the bones of the middle ear to be shorter,...

Penn researchers study the use of ultrasound for treatment of cancer

...ature, and if you turn on low-intensity ultrasound vibrations you can disrupt the blood flow through these vessels," explained Andrew Wood, DVSc, PhD, a co-investigator of the study and based in the University of Pennsylvania School of Veterinary Medicine. Sehgal adds, "This approach is in keeping with the lat...

Zooming in on the protein-conducting channel

...e provides dynamic information on the multitude of vibrations and motions that complex molecules preferentially undergo. NMFF analysis revealed that the cryo-EM data were best explained by a model in which the two PCC clamshells were joined in a “front-to-front?arrangement. This arrangement yielded significant...

New Lab Research May Help Those Deafened By Immune System Attack

...ensitive hair cells, whose movement in response to vibrations creates the nerve signals that are fed to the brain and interpreted as sounds and speech. Damage to the organ of Corti and hair cells, whether due to immune system attack, loud noise, trauma or medications, can diminish or destroy hearing. The U-M t...

Vietnam war technology could aid elephant conservation

...d colleagues from Stanford University recorded the vibrations from the footfalls of elephants and other large mammals, including giraffes, lions and humans, using a geophone buried near a path leading to a watering hole in Namibia's Etosha National Park. Because of the differences in the size and frequency of a...

A whole lot of shaking goin' on triggers early hatching in red-eyed tree frogs

...Behaviour, it's a particular characteristic of the vibrations that shake the clutch -- not only the speed of the...lerometer, a device like a microphone that records vibrations instead of sounds, into clutches of eggs she had collected, Warkentin was able to record vibrations ...

Team Invents Device For Weighing Individual Molecules

...ring its frequency. In other words, the mechanical vibrations of the now slightly-more-massive nanodevice become slightly lower in frequency--just as thicker, heavier strings on an instrument sound notes that are lower than lighter ones. Because frequency can be measured so precisely in physics labs, the resea...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...ng that low-frequency calls also generate powerful vibrations in the ground--seismic signals that elephants can ...ter. It could be that they are sensing underground vibrations generated by thunder." Frozen trunks O'Connell-Rodwell began studying elephants at Etosha more tha...

Duke engineers develop new 3-D cardiac imaging probe

...ber." The probe generates ultrasound at 5 million vibrations per second, which, combined with the 504 sensors, provides great sensitivity and a sharp image, Smith said. And because the image is large enough to encompass the whole volume of the heart, fewer "pictures" need to be taken. This may shorten patient ...

Termites feed through good vibrations

Discovery that termites use vibrations to choose the wood they eat may provide opportunit...ve found that termites use their ability to detect vibrations to determine which food source is most suitable. The termites can also detect how the vibrations are...

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