Tag: "neutron" at biology news
From Corn Rootworms To Art, Cornell's Reactor Is At The Core
...tworms in soil around it. The technique is called neutron
radiography, and professors from art historians an... that X-rays cannot produce. It is the first time neutron
radiography has been used to study insects. "X-rays pass through the rootworms without attenuation. ...
Antarctic Science Season Gears Up With Searches for Meteorites, Neutrinos, and New Life Forms
...ive galactic nuclei, supernovae remnants, pulsars, neutron
stars, or from elsewhere in or outside the galaxy. Such studies are at the forefront of the new field of neutrino astronomy. The array already offers some provocative results. From a sample during the first nine months of observations, AM...
STS-89 Will Carry Five Science Payloads From NASA/Marshall
...low the first protein crystalstudies by even finer neutron
diffraction. Returning on STS-89 willbe the Interferometer Protein Crystal GrowthApparatus (IPCG) , a device placed aboard Mir by the STS-86 mission.IPCG uses a compact optical system to show how the concentrations vary insidea solution as a protei...
Very Fruitful Collaboration Between French And German Scientists Yields Unusual Insights Into The Structure Of Membrane Proteins
...te of Structural Biology in Grenoble, France, used neutron
beams to expand current knowledge on ... proton pump bacteriorhodopsin. Using neutron
spectroscopy and diffraction experiments, which are sensitive to isotope labels, areas ...
Radiating relief: Researcher combats stubborn arthritis with neutrons
...cay kills the synovium and vanishes as soon as the neutron
beam is turned off, since boron itself is not radi...han 10 years INEEL has conducted research on boron neutron
capture therapy, a treatment for brain tumors that exploits the same interaction between boron and n...
The ultimate pocket protector--radiation detection made easy
... in other directions. "It's harder to detect the neutron
particles because they don't interact with matter ...ecause the INEEL dosimeter provides both gamma and neutron
data in real time with one instrument. The dosimeter eliminates the need to carry two instruments, ...
NTP plans to look at common viruses, radiation, cooking by-products for new carcinogen report
...pons. Neutrons, which may affect patients getting neutron
radiotherapy and the passengers and crew of aircraft, which are naturally bombarded by the particle. Naphthalene, which is used in making many industrial chemicals, and as an ingredient in some moth balls and toilet bowl deodorants. Nitrobenzene, w...
Study: King Midas' feast offered golden opportunity for fungi
...an element that contain slight variations in their neutron
counts but have the same number of protons. The test used by Filley and colleagues, which included Marilyn Fogel of the Carnegie Institution of Washington, was designed to detect trace amounts of two forms of nitrogen: 14-N, which accounts for most o...
PNNL science, technology help keep America safe
...rs offer substantial flexibility over conventional neutron
detection technologies, most of which use rigid helium-filled tubes. PUMAs glass fibers contain lithium-6 atoms and cerium ions that detect the presence of radionuclides. The neutrons react with the lithium isotope to leave an ionization trail thro...
Chemical evidence proves the old adage, Birds of a feather flock together
... A small percentage of carbon atoms carry an extra neutron
and therefore are known as carbon 13. Hydrogen 1 (the most common hydrogen isotope) only has one proton and no neutrons, but a rarer form deuterium contains both a proton and neutron. When Chamberlain and his co-workers analyzed warbler feathers c...
How cold! New partnership to use chilled neutrons
....Yet, for many challenges in biology and medicine, neutron
probes offer the onlyrealistic hope for answers." ...s that ward off harmfulmicroorganisms. To ease the neutron
crunch forbiologists, NIST offered to open a new port in a beamline at its NCNR. Whitethen organized...
Fusion in a flash?
...illion electron volts, which is the characteristic neutron
energy associated with deuterium-deuterium fusion....n non-deuterated (normal) acetone, and observed no neutron
emission or tritium production in these experiments. Currently, the level of neutron
emissions with ...
Hiroshima porcelain pieces provide insight into exposure levels
...pped on Hiroshima on August 6, 1945. The amount of neutron
fluence, for example, has been calculated from the site to establish what might be a safe level of exposure for humans. (Neutron fluence is the number of neutrons from the blast found per square centimeter.) The advent of nuclear accidents such as Th...
Physics tip sheet #13 May 15, 2002
.... Ebisuzaki arXiv preprint server The formation of neutron
stars from collapsing supernovae are some of the most dramatic processes in stellar evolution. In a neutron
star, high densities cause matter to form a uniform liquid but just before that happens, nuclei form...
Reactor reveals hidden life of rocks
... at the University of California, Davis, are using neutron
beams from a nuclear reactor to see inside rocks. ...er and Lesher have already used the method, called neutron
tomography, to find bacteria living inside rocks collected in the Mars-like environment of Antarctic...
Newer methods added, scope expanded in new Methods of Soil Analysis Book
...ater measurement methods from oven drying, through neutron
meters and tensiometers, to EM and NMR techniques. There are similarly comprehensive sections on water flow, solute transport (single and multiple, miscible and imiscible), air permeability, thermal capacity and conductivity, and soil erosion. "This...
Purdue researchers discover basis for biological clock
...f deuterium, the isotope of hydrogen with an extra neutron
in its nucleus -- could alter the clock to run on a 27-hour day. "Lots of heavy water was available back then, as it was needed for nuclear reactors," he said. "Investigators discovered that if you fed cells heavy water, they would operate on a 27-h...
ORNL, Georgia's Isotron develop promising new cancer treatment
...Laboratory. The advantage of the treatment, called neutron
brachytherapy, is that physicians can deliver a hi...e head, neck and mouth. The progress achieved with neutron
brachytherapy will enable unprecedented cancer treatment and will help physicians treat nearly 20 di...
Argonne research offers clues to Alzheimer's plaques
...s well as its self-assembly mechanism. Small-angle neutron
scattering at Argonne's Intense Pulsed Neutron Sou...dius and the molecular weight from the small-angle neutron
scattering analyses showed that six peptide ribbons are laminated together, 10 Angstroms apart, by w...
Physics tip sheet #36 - July 30, 2003
...hemical formula for water is H2O, a process called neutron
Compton scattering (NCS) showed the H:O ratio is more like 1.5:1. But was that result due to some quirk of the measurement technique or is the ratio really not 2:1? Researchers have now extended the NCS measurements in a crucial way, demonstrating fo...