Archives, Room Use Only - TK6547.G37 1995

Archives, Room Use Only - TK6547.J46 1994

Archives, Room Use Only - TK5255.D63 1926

Archives, Room Use Only - TK5711.B53 1974

Archives, Room Use Only - TK6540.S86 1950

Archives, Room Use Only - TK6545.A1 D86 1944

Archives, Room Use Only - TK5283.I58 1927

Archives, Room Use Only - TK6547.I56 2006

Archives, Room Use Only - HE7669.P55 1945

Archives, Room Use Only - TK6545.A1 G86 1992

Archives, Room Use Only - UG611.5.F8 F73 1918

Archives, Room Use Only - TK5743.G74 1915

Archives, Room Use Only - TK5811.B83 1920

Mineral inclusions in natural diamond are widely studied for the insight that they provide into the geochemistry and dynamics of the Earth's interior. A major challenge in achieving thorough yet high rates of analysis of mineral inclusions in diamond derives from the micrometre-scale of most inclusions, often requiring synchrotron radiation sources for diffraction. Centering microinclusions for diffraction with a highly focused synchrotron beam cannot be achieved optically because of the very high index of refraction of diamond. A fast, high-throughput method for identification of micromineral inclusions in diamond has been developed at the GeoSoilEnviro Center for Advanced Radiation Sources (GSECARS), Advanced Photon Source, Argonne National Laboratory, USA. Diamonds and their inclusions are imaged using synchrotron 3D computed X-ray microtomography on beamline 13-BM-D of GSECARS. The location of every inclusion is then pinpointed onto the coordinate system of the six-circle goniometer of the single-crystal diffractometer on beamline 13-BM-C. Because the bending magnet branch 13-BM is divided and delivered into 13-BM-C and 13-BM-D stations simultaneously, numerous diamonds can be examined during coordinated runs. The fast, high-throughput capability of the methodology is demonstrated by collecting 3D diffraction data on 53 diamond inclusions from Juína, Brazil, within a total of about 72 h of beam time.

This study relates to the INFN project SYRMA-3D for in vivo phase-contrast breast computed tomography using the SYRMEP synchrotron radiation beamline at the ELETTRA facility in Trieste, Italy. This peculiar imaging technique uses a novel dosimetric approach with respect to the standard clinical procedure. In this study, optimization of the acquisition procedure was evaluated in terms of dose delivered to the breast. An offline dose monitoring method was also investigated using radiochromic film dosimetry. Various irradiation geometries have been investigated for scanning the prone patient's pendant breast, simulated by a 14 cm-diameter polymethylmethacrylate cylindrical phantom containing pieces of calibrated radiochromic film type XR-QA2. Films were inserted mid-plane in the phantom, as well as wrapped around its external surface, and irradiated at 38 keV, with an air kerma value that would produce an estimated mean glandular dose of 5 mGy for a 14 cm-diameter 50% glandular breast. Axial scans were performed over a full rotation or over 180°. The results point out that a scheme adopting a stepped rotation irradiation represents the best geometry to optimize the dose distribution to the breast. The feasibility of using a piece of calibrated radiochromic film wrapped around a suitable holder around the breast to monitor the scan dose offline is demonstrated.

The way that massive stars form remains mysterious, in part, because massive stars are rare and tend to spend their youth shrouded by dust and gas and hidden from view.

The post Radio telescopes give astronomers rare glimpse at a young protostar’s formation appeared first on Smithsonian Insider.

In a series of ongoing experiments on Barro Colorado Island in the Panama Canal, Kays and other researchers are using camera traps, radio collars and palm nuts with tracking transmitters attached to them to take a closer look at the nut-hoarding strategies of the agouti.

The post Camera traps & radio collars reveal hoarding strategies of the South American agouti appeared first on Smithsonian Insider.

On the Smithsonian Tropical Research Institute's Barro Colorado Island in the Panama Canal, staff members are taking down a network of seven tall Automated Radio Telemetry System towers used to track animals wearing radio-transmitters. Scientists on the island are switching to GPS and camera trap systems to produce more data with less infrastructure.

The post GPS and camera traps to replace radio antennas in tracking animals on Barro Colorado Island appeared first on Smithsonian Insider.

The center of our Milky Way galaxy is a mysterious place. Not only is it thousands of light-years away, it’s also cloaked in so much […]

The post RADIO TELESCOPES COULD SPOT STARS HIDDEN IN THE GALACTIC CENTER appeared first on Smithsonian Insider.

Fast radio bursts (FRBs) are brief spurts of radio emission, lasting just one-thousandth of a second, whose origins are mysterious. Fewer than two dozen have […]

The post Astronomers propose cell phone search for galactic radio bursts appeared first on Smithsonian Insider.

The search for extraterrestrial intelligence has looked for many different signs of alien life, from radio broadcasts to laser flashes, without success. However, newly published […]

The post Could Fast Radio Bursts Be Powering Alien Probes? appeared first on Smithsonian Insider.

When fast radio bursts, or FRBs, were first detected in 2001, astronomers had never seen anything like them before. Since then, astronomers have found a […]

The post New study indicates mysterious fast radio bursts occur in universe every second appeared first on Smithsonian Insider.

Ninety Limosa harlequin frogs (Atelopus limosus) bred in human care are braving the elements of the wild after Smithsonian scientists sent them out into the […]

The post Scientists Release Frogs Wearing Mini Radio Transmitters appeared first on Smithsonian Insider.

Researchers have demonstrated how the ERICA Integrated Approach can be used to assess the effect of releasing radiation into the environment on local wildlife in a real-world situation. The study applied ERICA to a river in Norway and found that local wildlife was only exposed to low levels of radioactivity from the routine aquatic discharges of a nearby research reactor, although historical exposure was higher.

Ninety-eight per cent of radioactive iodine in Arctic sea ice may come from Europe, new research suggests. The study concludes that atmospheric transport of Iodine-129 from European nuclear fuel reprocessing plants is the most likely source.

Fires in forests contaminated by the Chernobyl nuclear accident could lead to areas of Europe and Russia being exposed to further radioactive fallout, new research has found. The study examined the spread of the fallout and the health effects on people and animals under three different scenarios: 10, 50 and 100% of the forests being burnt.

Mining uranium ore leaves sites contaminated with toxic, radioactive material. According to a new study, contaminated sites can be treated with sludge from the treatment of distillery wastewater in bioreactors. The study demonstrates an efficient method for decontamination of groundwater based on bacteria in sludge that naturally convert uranium into an insoluble form that can be more easily removed.

Japanese researchers will release monkeys into the radioactive zone near Fukishima nuclear plant to test radiation levels. What could possibly go wrong?

According to a government study, Russia is covered with tens of thousands of ecological disasters.

Somewhere in West Texas is a 7-inch radioactive cylinder that Halliburton would like to find. Anyone who comes across it is advised to keep their distance.

They might sound a little pricey, but these might be the longest lasting batteries ever created.

Nuclear fallout has benefitted the beasts, considered as both tasty and fearsome in Japanese culture.

People are using low-power FM radio stations (LPFMs) to inform, educate and spark change in their communities.

A mysterious radio signal from deep space appears to be repeating every 16 days.

Thousands of consumer products made from recycled materials confirmed radioactive.

Chemical material could speed clean-up at power plants by snapping its jaws at radioactive waste, leaving nontoxic byproducts alone.

Many repeating and non-repeating signals have been discovered by the CHIME telescope in Canada.

From “The Giants win the pennant” to “Back back back back… and it’s outta here!” to “Go Cubs Go!”, baseball on the radio is as great a tradition as any other in America’s pastime, and the legends of World Series radio broadcasting, Hall of Famers like Vin Scully, Harry Caray and Bob Uecker. Relive some […]

The post World Series Radio appeared first on RSS News Feed.

There are two important characteristics that recommend satellite radio as a service most people would like to have in their vehicles or homes: quality and content.

Unique Functionality Will Help Sell Mobile Ad Campaigns, Drive Listener Engagement

Judy Woodruff, Gwen Ifill to receive Charles Osgood Award

New Episodes of Be Something Wonderful Radio With Tom Kearin Coming in Early 2018

New partnership brings TrafficLand real-time roadway video to Harman's connected car Ignite Platform

hit show features the best in supernatural experts and authors

Dallas based Public Relations Firm who specializes in the Entertainment Industry launches Radio Promotion and Production Services

Having overcome many life-altering challenges and struggles, Victoria Napolitano is a successful entrepreneur with great a perspective on mental health. Her new radio show 'Listen.' aims to engage listeners in positive thoughts.

This summer, Doni-Jo Minor-Munro will be debuting her brand new cultural podcast series, "Tsa HO fa: Conversations with Doni-Jo Minor-Munro" as well as furthering her White Bison training. You will be able to experience it all in real time.

Sharpe's books are riveting inspirational thrillers written in honor of her daughter Kate and her husband Steve.