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Tag: "objects" at biology news

Ophthalmologists Use Artificial Silicon Retina Microchip To Treat Vision Loss

...iving such as improved ambulation-not bumping into objects around the house, and reading the time on a clock." Still in Phase II clinical trials, Pollack cautions it is still too early to determine what percentage of patients might experience improvement in vision and what resolution capability these patien...

Ophthalmologists implant five patients with artificial silicon retina microchip

...iving such as improved ambulation-not bumping into objects around the house, and reading the time on a clock." Still in Phase II clinical trials, Pollack cautions it is still too early to determine what percentage of patients might experience improvement in vision and what resolution capability these patien...

Polymers with copper show promise for implanted sensors

...The problem is, the body responds to these foreign objects in ways that interfere with their ability to accurately measure blood chemistry. In the bloodstream, clots form on the surface of implanted sensors or blood vessels contract around them. Sensors implanted under the skin may become walled off by cells...

Oldest cranial, dental and postcranial fossils of early modern European humans confirmed

... many portions of the skeleton plus archaeological objects from the Aurignacian period. Only two modern human specimens from a site in Romania, dated to ~35,000 years ago, are older. At Mladec there are multiple individuals - at least 5 or 6 represented. The dating shows that the Mladec assemblage is central...

Bobbing birds do it for a reason

...ies, and thereby enables the accurate detection of objects such as food items. The motion associated with th...birds, permits the close and stable examination of objects in view during the immobile phase and allows the birds to change their point of gaze and probably to...

A probe, not an echo

.... A hand-held apparatus cannot objectively locate objects in 3D space (in a fixed-coordinate system), but only allows the user to subjectively observe where an object is in relation to other observable structures. Therefore, it is operator-dependent. The HUTT system transmits an extremely short ultrasonic ...

DNA constraints control structure of attached macromolecules

... used as a static lattice to construct geometrical objects in three dimensions. Instead of manipulating DNA alone into such shapes, the researchers are using DNA to control the folding and resulting structure of RNA. Eventually, they envision building supramolecular machines whose inner workings are governed...

UN successfully tests 'green' pesticide against locusts

... used as a static lattice to construct geometrical objects in three dimensions. Instead of manipulating DNA alone into such shapes, the researchers are using DNA to control the folding and resulting structure of RNA. Eventually, they envision building supramolecular machines whose inner workings are governed...

Health costs soar as 60 million Americans classed as obese

... used as a static lattice to construct geometrical objects in three dimensions. Instead of manipulating DNA alone into such shapes, the researchers are using DNA to control the folding and resulting structure of RNA. Eventually, they envision building supramolecular machines whose inner workings are governed...

Brain Scan Study of Smokers Reveals Signature of Craving

... all people attempting to quit avoid situations or objects that remind them of smoking, the new results suggest that such measures may be particularly important for some smokers, he said. The Duke team is now examining methods that may help break the connection between cigarette cues and brain activity as a...

Blink, and the brain misses it

...d when people become conscious of visual events or objects in the outside world. "Transiently suppressing these brain areas involved in visual awareness during blinks may be a neural mechanism for preventing the brain from becoming aware of the eyelid sweeping down over the pupil during a blink and the world...

Six previously blind patients detect light, motion, identify objects with retinal prostheses

... patients have been able to detect light, identify objects in their environment, and even perceive motion aft...position of, or count the number of, high contrast objects with 74 to 99 percent accuracy," Humayun says. In addition, they could discriminate simple shapes-i....

Scientists focus on 'dwarf eye'

...edness) -- the ability to see only distant or near objects clearly, respectively -- stems from the complex growth of the human eye. All human eyes have a slight degree of farsightedness at birth. As the child grows and gains more visual experience, the eye adjusts its focus by growing, which changes the dist...

Scientists devise way to measure RNA synthesis on the fly in a live cell

...onomy, when scientists realized that the celestial objects visible to them did not contain enough gravity to explain the motion of galaxies. "They proposed the hypothesis that the motion of galaxies is affected by the presence of invisible matter called 'dark matter,'" Cluzel said. In recent years, astronom...

Carnegie Mellon cyLab researchers work to develop new red tide monitoring

...temporal data mining system to track harmful ocean objects from NASA's SeaWiFS satellite images and NOAA's oceanographic data. These harmful ocean objects, known as red tide, include a naturally occurring microscopic algae Karenia brevis, which form only in the Gulf of Mexico and release toxins deadly to fis...

New law for resolution allows unprecedented sharpness in fluorescence microscopy

...aptured this limit in a formula, which states that objects at distances that are smaller than a certain limit cannot be separated in a light microscope. This resolution limit can be largely ascribed to the fact that light cannot be focused to a smaller spot due to diffraction. It seemed impossible to image d...

New discovery blurs distinction between human cells and those of bacteria

...first structural details of a family of mysterious objects called microcompartments that seem to be present in a variety of bacteria. The discovery was published Aug. 5 in the journal Science. "This is the first look at how microcompartments are built, and what the pieces look like," said Todd O. Yeates, UC...

Nighttime Dying Linked To Sleep Apnea From Brain Cell Loss

...first structural details of a family of mysterious objects called microcompartments that seem to be present in a variety of bacteria. The discovery was published Aug. 5 in the journal Science. "This is the first look at how microcompartments are built, and what the pieces look like," said Todd O. Yeates, UC...

Field tested: Grasslands won't help buffer climate change as carbon dioxide levels rise

...first structural details of a family of mysterious objects called microcompartments that seem to be present in a variety of bacteria. The discovery was published Aug. 5 in the journal Science. "This is the first look at how microcompartments are built, and what the pieces look like," said Todd O. Yeates, UC...

What Makes The Brain Tick, Tick, Tick: Researchers Gaining New Insights Into Brain's Internal Clock

...g objects, carrying on a conversation and tracking objects in the environment, they said. "Interval timing is necessary for us to understand temporal order of events, for example when carrying on a conversation," said Meck. "To understand speech, I not only have to process the millisecond intervals involved...

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