Tag: "vibrations" at biology news
Universe's stringy birth revealed by young Czech scientist in EURYI winning project
...ring field. This field represents all particles as vibrations
of a string at given frequencies. The string field is then the sum total of all vibrations, elegantly bringing all particles together into one, so that physicists no longer need to be embarrassed by the discovery of yet another particle type. It's a...
Size and positioning of floral anthers facilitates pollen collection by bees
...pollinated by bees that release the pollen through vibrations
caused by their buzzing. Endress and his coworkers found a diversity of floral structures that may represent different strategies for pollen dispersal, even in the same genus. The appearance of flowering plants on earth about 150 million years ag...
Size and positioning of floral anthers facilitates
...pollinated by bees that release the pollen through vibrations
caused by their buzzing. Endress and his coworkers found a diversity of floral structures that may represent different strategies for pollen dispersal, even in the same genus. The diversification of flowering plants on earth about 130 million year...
ESA's water mission instrument passes test program
...n Acoustic Facility. Here the tremendous noise and vibrations
levels that are expected to be experienced under the launcher's fairing were simulated. Temperature extremes Having survived the acoustic tests, the instrument was transferred to the Large Space Simulator. This is a massive vacuum chamber where ...
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 aut...
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 and ...
Protein enables discovery of quantum effect in photosynthesis
...ave 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. "This...
Where is the proton? Yale scientists discover footprints of shared protons
...ther than intimately entangling with the molecular vibrations
of the attached molecules. Led by Professor Mark Johnson in the Department of Chemistry , the new data reveal distinct, isolated vibrational patterns, solely associated with the bridging proton, that change dramatically according to the chemical...
One membrane, many frequencies
...e inner hair cells (which convert these mechanical vibrations
to electrical signals and pass them on to the brain via the auditory nerve). If certain genes for this membrane are missing or damaged, total deafness ensues. Rousso and research student Rachel Gueta, together with researchers at the Ben-Gurion Uni...
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 th...
Largest physics meeting of the year, in Denver
...iring of electrons through the mediation of subtle vibrations
rippling through the material. Physicist Paul Grant calls the BCS work "the most monumental theoretical achievement of condensed matter physics in the 20th century." Session G1 looks at the impact of this theory on the study of not only atoms and s...
'Good vibrations' from deep-sea smokers may keep fish out of hot water
...rompting scientists to wonder: Could the sound and vibrations
of black smokers be the reason fish in total darkness avoid being poached by waters as hot as 750 F? And might similar sounds guide them to the smorgasbord of tube worms, mussels, shrimp, snails and other fauna at vents with more temperate waters? Wa...
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 structura...
Unique imaging uncovers the invisible world where surfaces meet
...ound in a living cell by taking advantage of these vibrations
and using them to map the movement of chemicals wi...ut not visible with the human eye. IR reveals the vibrations
of molecules in a cell, which act as "signatures," allowing Hirschmugl to identify the material she'...
Fruit flies aboard space shuttle subjects of UCF, UC Davis study on immunity and space
...oup will be subjected to the same temperatures and vibrations
experienced during space flight. The other group will be kept in normal room conditions. The shuttle also will carry a small amount of a fungus known as "Beauveria bassiana," an approved organic pesticide that is not harmful to humans. Kimbrell, vo...
Protein tied to usher syndrome may be hearing's 'Missing Link'
... When fluid in the inner ear is set into motion by vibrations
emanating from the bones of the middle ear, the rippling effect causes bristly structures atop the hair cells to bump up against an overlying membrane and to deflect. Like seats in a three-row stadium, the bristles, called stereocilia, are arranged i...
Story tips from the Department of Energy's Oak Ridge National Laboratory, June 2006
...insulating properties, preventing wall transmitted vibrations
or sounds that are heard with a conventional steel stud. The Insul-Stud's design minimizes and disrupts heat flow horizontally and vertically, which also creates the sound dampening qualities. Testing continues regarding the Insul-Stud's resistance t...
Collaborative study successfully applies neutrons to study hydrogen transfer in biological systems
...avy and light elements equally well and even sense vibrations
of atoms as well as their positions. An accelerator generates neutrons by driving an intense beam of particles, usually protons, into a target of heavy atoms. This knocks neutrons loose from the nuclei of the target, a process called spallation. Th...
Whale bubble nets, saxophone sounds, ultrasonic laser
...a photoacoustic microscope that first excites tiny vibrations
(acoustic waves set in motion by local heating) in... system to match the bandwidth of the excited beam vibrations
How a locust's eardrum could lead to tiny microphones
...aring. This means that they can generate their own vibrations
to amplify incoming sounds and improve the sensitivity of their hearing. They are able to stop this positive feedback when sounds create enough vibration on their own. How the mosquito does this is poorly understood but if we can gain a better unders...
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