Tag: "beam" at biology news

From Corn Rootworms To Art, Cornell's Reactor Is At The Core

...k II nuclear reactor at Ward Laboratory produces a beam of neutrons that is focused to a plate holding a s...me observing. A video camera inside the high-flux beam configuration can show what happens to a sample, as it is happening. This beam is 40 times more int...

Duke's Russian Laser Making Ultraviolet Light And Gamma Rays

...system to produce gamma rays by collidingthe laser beam with the same electron beam that feeds it. Duke's FEL Laboratory is funded by a U.S. Department of Defense programfor advancing...

NIH Team Discovers Endocrine Tumor Gene

...e latest version of which uses a single-shot laser beam to remove a tumor cell from surrounding normal tissue under a microscope. With this technique, the scientists were able to search tumor tissue for loss of a segment of the normal copy of the chromosome a patient would have inherited from an unaffect...

Mystery Of Vital Cell Protein Solved After 30 Years

.... "Obtaining diffraction patterns withan electron beam enables us to work with crystals only one molecule...atreduced damage to the crystals from the electron beam and yielded less "noise"than a conventional electron microscope. This microscope is also equipped t...

DNA Enzyme Works In Crystal Form; Yields New Insights Into Gene Copying

...n this technique,scientists shine an intense X-ray beam through a crystal of protein. The crystaldiffracts the beam into a multitude of spots, and using a computer, thescientists can deduce the structure of the prote...

Biochemists Gain Crystal-Clear Insight into 'Ancient' Enzyme

... X-ray crystallography. In thistechnique, an X-ray beam is directed through the protein crystal and isdiffracted by the crystal's atoms into a pattern of spots. By analyzingthe pattern, chemists can deduce the structure of the protein moleculesthat make up the crystal. In analyzing the protein's structur...

Cells Say The Darndest Things

...esicle moves to the most intense area of the laser beam and stops there. Once the vesicle is immobilized, the researchers move a minuscule tube next to the vesicle. A slight electric current slides the vesicle into the tube. Next, the researchers add chemicals that tear open the package and label its con...

First TableTop Source Of Concentrated X-Rays Built

...st table-top laser capable of generating acoherent beam of X-rays. The work could give chemists a close-up...e and colleagues---were able to generate a focused beam of X-rays thatcould be incorporated into a device for atomic-scale imaging. Although it has long bee...

CU Team Develops New Techniques For Repair Of Bone And Cartilage

...es, in aliquid solution, then use a UV light laser beam to convert the liquid to a gel. The resulting polymer, based on polyethylene glycol, has been modified by the CUteam to make it degradable over time as the chondrocytes multiply. "Cartilage is a tissue easier to engineer than organs and other...

New Satellite Tags Track Movements Of Atlantic Bluefin Tuna

...h at apreprogrammed time, float to the surface and beam their accumulated data viasatellite to scientists in the lab, revealing where the fish moved and whatocean temperatures they favored. Giant bluefin tuna, which can fetch as much as $80,000 apiece in the Tokyoseafood market, currently are managed as ...

Genetic Clue Found To The Leading Cause Of Blindness In The United States

...ue called laser photocoagulation, in which a laser beam is used to slow down theso-called "wet" form of the disease. In this form, new blood vessels grow underneath the retina, than leak, bleed and form scar tissue. Thedegeneration process usually occurs rapidly, over weeks or months, and oftenprofoundly ...

Dinosaur Tooth Enamel: A Key To Investigating Ancient Climate On Land

...namel from the toothsurface. The laser produces a beam of ultra-violet light about 200microns in width that is used to vaporize a narrow and shallow bandof enamel; oxygen in released from the vaporized enamel, and theisotopic ratio of this oxygen is measured by a mass spectrometer.Using this new microana...

Virginia Tech Research Group Presents Improved Dental Materials

...heinstrumentation employed was a commercial double beam light accessory(Perkin-Elmer DPA 7) attached to a DSC apparatus (Perkin-Elmer DSC 7)."He described the process: "The blue light illuminated both a reaction cell and areference cell; the differential power input required to maintain the sametemperatur...

X-Ray Concentrator Will Expand Window On High-Energy Universe

...rom a wide angle and concentrate theminto a narrow beam aimed at the center of the crystal being studied. Thisproduces a brighter dot pattern in a shorter period time, thus helpingscientists deduce the molecular structure faster and with less uncertainty. Finally, capillary optics can also be used to prod...

Radioactive Beads Latest Weapon In Fighting Cancer In Dogs, Cats

...tional radiation therapy where you use an external beam unit, theanimal has to lie still for the radiation therapy; this requires dailyanesthesia anywhere from 10 to 15, or 20 times -- depending on what type of tumorit is," Chun said. "And the costs really add up when you have to anesthetize theanimal eac...

Largest Acoustics Meeting In History Expected

...d by measuring changes in the intensity of a light beam inside the microphone (2aEA2). --- The Secrets of Swing. When jazz and blues musicians read sheet music containing a sequence of notes with equal length, they often play these notes in a pattern in which a long note alternates with a short note. ...

Fake Photosynthesis? Test-Tube System In Science Paper Sheds Light On The Oxygen We Breathe, UD Prof Says

...ingold's lab, a singlecrystal, when bombarded by a beam of X-rays, produced a pattern of scatteredbeams related to the arrangement of atoms in the molecules in the crystal. Usinga computer, the UD researchers could then position the atoms to create acolor-coded "map" of the molecular architecture of the Y...

Viral Harpoon Structure Suggests Measles, HIV And Ebola Viruses Related

...nalytical process involves shining an intensex-ray beam through a protein crystal, and then deducing the protein’sstructure by analyzing the patterns of light that emerge from the crystal. Although the scientists studied the fusion protein of only one paramyxovirus,they are confident that the struct...

Aging Vehicle Fleet Polluting The Air

...res a vehicle's emissions as it breaks an infrared beam in its path. Otherequipment photographs the vehicle's tag; researchers later use this photo tocorrelate emissions data with registration data. In a typical day, researchers gather information on 4,000 vehicles. InAtlanta, researchers gather ...

Landmark progress in understanding ribosome structure-- research done at Brookhaven Lab's light source

...peated pattern fortheir studies. An intense x-ray beam from the Light Source penetrated thecrystal, resulting in tens of thousands of diffraction spots on a computerizedimaging detector. The researchers measured the position and intensity of eachspot, and then mathematically calculated the electron dens...

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