| 单词 | radioisotope |
| 例句 | The other was for a “new and larger cyclotron” for medical research, including the full-scale production of synthetic radioisotopes. Big Science 2015-07-07T00:00:00Z Outsiders might disdain the lab’s focus on radioisotope hunting, but filling in the roster of isotopes throughout the periodic table was important work. Big Science 2015-07-07T00:00:00Z It was not long before he found the medical radioisotope of his dreams. Big Science 2015-07-07T00:00:00Z A string of especially perplexing breakdowns had bedeviled the lab that year, at a time when Lawrence was struggling to fill a mounting stack of orders for radioisotopes from all over the country. Big Science 2015-07-07T00:00:00Z Also omitted were his mentions of the biomedical team working with John Lawrence; consequently, the article gave readers the impression that the radioisotope and neutron work was solely a two-brother effort. Big Science 2015-07-07T00:00:00Z There was more to Rad Lab science than the identification of new radioisotopes, due in part to the recruitment of world-class physicists such as McMillan and Alvarez. Big Science 2015-07-07T00:00:00Z Its main cause was the increasing pressure to produce radioisotopes in bulk. Big Science 2015-07-07T00:00:00Z To the physicists, the separation and purification of radioisotopes seemed a black art; but it was well within the capabilities of a graduate chemist. Big Science 2015-07-07T00:00:00Z This time Neylan’s target was Melvin Calvin, a future Nobel laureate who had worked at the Metallurgical Lab in Chicago and then moved to Berkeley to research peacetime applications of medical radioisotopes with John Lawrence. Big Science 2015-07-07T00:00:00Z Alvarez seconded Nahmias’s perception that the cyclotron was used “as a radioactivity factory first of all because great numbers of new radioisotopes could be discovered that way with very little effort.” Big Science 2015-07-07T00:00:00Z He became an assiduous collector of government contracts large and small, starting with the production of radioisotopes at a standard fee of $25 per hour of cyclotron time. Big Science 2015-07-07T00:00:00Z For all its audacity, Lawrence’s conjecture about the potential to create new radioisotopes was correct. Big Science 2015-07-07T00:00:00Z This was true at the time of Urey’s writing: of the known radioisotopes, carbon-11 had a half-life of only twenty-one minutes; nitrogen-13, only ten; and oxygen-15, only two. Big Science 2015-07-07T00:00:00Z Starting around Christmas 1937, when he administered his first dose of a phosphorus radioisotope to a patient at the university medical center, John’s need for the substance became “insatiable,” Kamen recalled. Big Science 2015-07-07T00:00:00Z I would like to help in that area of research, and in the search for radioisotopes that may be used in local cortical control, but I know now that I won’t have the time. Flowers for Algernon 1959-05-01T00:00:00Z That machine, now turning out radioisotopes and bombarding tumors with neutrons in the Crocker Lab, was the most exquisitely engineered cyclotron in the world, thanks to Brobeck’s painstaking oversight. Big Science 2015-07-07T00:00:00Z Tehran says it needs the program to produce fuel for future nuclear reactors and medical radioisotopes needed for cancer patients. Report: Iran begins uranium enrichment at new site as Guard threatens key strait closure 2012-01-08T12:44:00Z In 1969, a group of South Asian women in Coventry were given chapatis containing a radioisotope. Daughter questions Coventry radioactive chapati study consent 2023-08-31T04:00:00Z The probes use three plutonium dioxide radioisotope thermoelectric generators. These are the oldest space probes that are still operational 2023-05-07T04:00:00Z Scientists say health impacts from consuming tritium and other radioisotopes through the food chain may be worse than from drinking it in water and further studies are needed. What’s happening at Fukushima plant 12 years after meltdown? 2023-03-09T05:00:00Z Building a nuclear medicine reactor in north Wales would allow the production of nuclear medicines such as radioisotopes for the UK, and potentially beyond, as well as create jobs. Nuclear cancer treatments: Plan to make Wales global leader 2023-01-09T05:00:00Z Another consideration is that only a few radioisotopes, which are commonly used for medical purposes or power generation, are suitable for use in this kind of device. Why Is Russia Suddenly Talking About ‘Dirty Bombs’? 2022-10-25T04:00:00Z The firm hopes to initially develop a reactor that will fuse just cheap, abundant deuterium, to generate not power, but neutrons for manufacturing radioisotopes. Twisty device explores alternative path to fusion 2022-09-06T04:00:00Z Every year their batteries lose up to 4 watts of power due to the decay of plutonium-238, the radioisotope that fuels them. JPL tries to keep Voyager space probes from disconnecting the world’s longest phone call 2022-09-03T04:00:00Z An ingenious use of radiopharmaceuticals in cancer therapy tags antibodies with radioisotopes. College Physics for AP Courses 2015-08-12T00:00:00Z Most of these radioisotopes have relatively short half-lives; some are short enough that the radioisotope must be made on-site at medical facilities. Chemistry 2019-02-14T00:00:00Z For the weapon’s radiation to be lethal, the radioisotope used would have to have a strong enough intensity to harm people. Why Is Russia Suddenly Talking About ‘Dirty Bombs’? 2022-10-25T04:00:00Z For example, the half-life of tritium—a radioisotope of hydrogen—is about 12 years, indicating it takes 12 years for half of the tritium nuclei in a sample to decay. Anatomy and Physiology 2013-06-19T00:00:00Z Avalanche is pushing the boundaries of nuclear fusion while Ultra Safe aims to revolutionize nuclear radioisotope batteries, like those that power Mars rovers. 2 Seattle startups racing to transform next-gen space travel 2022-06-26T04:00:00Z Antibodies produced by a patient to combat his cancer are extracted, cultured, loaded with a radioisotope, and then returned to the patient. College Physics for AP Courses 2015-08-12T00:00:00Z To perform a PET scan, a positron-emitting radioisotope is produced in a cyclotron and then attached to a substance that is used by the part of the body being investigated. Chemistry 2019-02-14T00:00:00Z OPG filters out the tritium and sells off about 100 grams of it a year, mostly as a medical radioisotope and for glow-in-the-dark watch dials and emergency signage. Fusion power may run out of fuel before it even gets started 2022-06-22T04:00:00Z But, beyond plutonium and uranium, what other radioisotopes are at play here? The U.S. Must Take Responsibility for Nuclear Fallout in the Marshall Islands 2022-04-04T04:00:00Z The newly built neutron source facility is intended for the research and production of radioisotopes for medical and industrial needs. Live updates: Kharkiv nuclear facility again hit by shelling 2022-03-27T04:00:00Z On 11 March, wildfires ignited in the nearby radioactive forests, which harbor radioisotopes that were disgorged in the accident and taken up by plants and fungi. Dirty bomb ingredients go missing from Chornobyl monitoring lab 2022-03-25T04:00:00Z Technetium-99m is a popular radioisotope for medical imaging studies that undergoes relatively rapid decay and exhibits a half-life of about six hours. Chemistry 2019-02-14T00:00:00Z “Given the half-lives of certain radioisotopes, this problem will not disappear in the lifetimes of all living generations,” it added. Forest fires near Russian-held Chernobyl nuclear plant raise radiation fears, Ukraine says 2022-03-22T04:00:00Z Though the presence of this radioisotope in sediment does not neatly translate into contamination in soil or food, the finding does suggest the possibility of danger to ecosystems and people. The U.S. Must Take Responsibility for Nuclear Fallout in the Marshall Islands 2022-04-04T04:00:00Z Most recently, the lab helped power NASA’s Mars rover Perseverance with a radioisotope power system, which converts heat generated by the natural decay of plutonium-238 into electrical power. NASA seeks ideas for a nuclear reactor on the moon 2021-11-19T05:00:00Z As a proof of principle, Cederwall and colleagues focused on detection of californium-252, a readily available radioisotope widely used as a proxy for weapons-grade plutonium. New type of imager could help spot smuggled nuclear materials 2021-05-19T04:00:00Z For example, the radioisotope C-14 was used to elucidate the details of how photosynthesis occurs. Chemistry 2019-02-14T00:00:00Z When Ingenuity was attached to Perseverance, it fed off the rover's nuclear-powered radioisotope thermal electric generator to stay warm. The Ingenuity helicopter just survived its first night alone on Mars. Now comes the hard part 2021-04-05T04:00:00Z Perseverance is powered by what are known as radioisotope thermoelectric generators, meaning it’s not dependent on sunlight and should be immune to dust storms. NASA’s Perseverance rover may unlock mysteries behind weather on Mars 2021-02-23T05:00:00Z Scientists at the facility will study the mineralogical and chemical makeup of the samples, including measuring the abundance of certain radioisotopes—elements that decay over time—to precisely date them. China's new moon mission returns the first lunar samples since 1976 2020-12-16T05:00:00Z Re-assembly will include the insertion of some radioisotope heaters in Rosalind Franklin to help ward off the freezing temperatures on Mars. Euro-Russian Mars rover mission takes shape 2020-12-08T05:00:00Z All nuclear decay processes follow first-order kinetics, and each radioisotope has its own characteristic half-life, the time that is required for half of its atoms to decay. Chemistry 2019-02-14T00:00:00Z To survive such an extreme environment, the surface spacecraft would need to be equipped with special heating instruments — such as radioisotope generators that radioactively decay over time and generate warmth. China launches ambitious mission to bring back samples from the Moon 2020-11-23T05:00:00Z The two longest-operating radioisotope power system missions are Voyager I and II, which are still in operation 43 years later. How is the Mars Perseverance rover getting to the Red Planet? 2020-07-28T04:00:00Z By design, Perseverance borrows much from Curiosity: a six-wheeled chassis the size of a small SUV, an imaging turret, a radioisotope power source. NASA’s new rover will collect martian rocks—and clues to planet’s ancient climate 2020-06-25T04:00:00Z This artwork doesn't use charcoal, which would otherwise provide carbon for radioisotope dating. Pebbles, Oceans and Wasp Clocks 2020-02-16T05:00:00Z An average atomic weight cannot be determined for these elements because their radioisotopes may vary significantly in relative abundance, depending on the source, or may not even exist in nature. Chemistry 2019-02-14T00:00:00Z About one million patients in the UK receive medical radioisotopes for diagnosis or therapy each year. How would a no-deal Brexit affect life in NI? 2019-09-20T04:00:00Z Earlier this month, Newsnight reported that delays occurred during a "dry run" of emergency aircraft deliveries of radioisotopes used in cancer diagnosis and treatment. No deal Brexit: Flu vaccine delays "very likely" 2019-08-29T04:00:00Z These are the radioisotope heaters that will keep the vehicle warm in the bitter conditions on Mars. 'Rosalind Franklin' Mars rover assembly completed 2019-08-27T04:00:00Z The committee’s current plan is to look to the legacy of the atomic age, when radioactive debris from mid-twentieth-century nuclear bomb blasts left a fingerprint of radioisotopes in the atmosphere, rocks, trees and even humans. Humans versus Earth: the quest to define the Anthropocene 2019-08-05T04:00:00Z Plutonium-238 is a radioisotope associated with nuclear waste and not generally with fallout, said Ivana Nikolic Hughes, a co-author of the research and an associate professor of chemistry at Columbia. Radioactivity in parts of the Marshall Islands is far higher than Chernobyl, study says 2019-07-15T04:00:00Z He says there are also concerns around the availability of radioisotopes. How would a no-deal Brexit affect life in NI? 2019-09-20T04:00:00Z And just like Curiosity, Dragonfly will be nuclear-powered, carrying a radioisotope thermoelectric generator. New NASA Mission Will Fly Titan's Frigid Skies to Search for Life's Beginnings 2019-06-27T04:00:00Z The guidance refers to the radioisotopes commonly used in the diagnosis and treatment of some cancers. Brexit 'likely to cause cancer test delays' 2019-03-05T05:00:00Z My father touched on cellular activities, radioisotopes, chromatography, and also more general matters. Family Medicine 2019-03-04T05:00:00Z Curiously, the radioisotope levels found in Naen island’s soils — located around 100 miles away — were roughly the same as those found at the Castle Bravo explosion site. Radioactivity in parts of the Marshall Islands is far higher than Chernobyl, study says 2019-07-15T04:00:00Z If nothing else, the technologies used to make new elements can help produce radioisotopes for medicine and test how well satellite components withstand bombardment by particles. A storied Russian lab is trying to push the periodic table past its limits—and uncover exotic new elements 2019-01-30T05:00:00Z Disruption from customs checks at our ports is likely to render radioisotopes useless for healthcare treatment, he said. Drakeford closer to backing new EU vote 2019-01-22T05:00:00Z The UK Department of Health has pledged to charter a plane to fly in radioisotopes essential for medical screening for conditions such as liver disease and cancer. How UK scientists are planning for a chaotic no-deal Brexit 2019-01-16T05:00:00Z Because plutonium-based batteries, which rely on the heat generated by the natural decay of radioisotopes, are too expensive for most private firms, lunar prospectors will probably have to harness energy from the Sun. How to build a Moon base 2018-10-23T04:00:00Z They also replaced a costly radioisotope generator with panels to draw solar power—all too abundant in the corona. NASA’s Parker Probe will venture closer than ever to the sun to explore its mysterious atmosphere 2018-08-01T04:00:00Z They calculated its age by directly testing the bone using a technique called uranium series dating, which determines the age of a material by comparing levels of radioisotopes it contains. A Fossilized Finger Bone Offers New Clues to Human History 2018-04-09T04:00:00Z Dose rates and radioisotope concentrations in the concrete calibration blocks at Oxford. Humans thrived in South Africa through the Toba eruption about 74,000 years ago 2018-03-11T05:00:00Z The DNA and radioisotope analysis can also help prosecute traffickers. Seized ivory probed for clues that could help save elephants 2018-01-15T05:00:00Z Because of an editing error, several picture captions with an earlier version of this article mischaracterized the role played by the radioisotope Molybdenum-99 in medical diagnostics. Inside the Global Relay Race to Deliver Moly-99 2018-01-12T05:00:00Z In late September and early October, French authorities monitoring the atmosphere discovered the presence of trace amounts of a radioisotope, ruthenium-106, a byproduct of nuclear reprocessing that is not normally present in the air. Opinion | Is Russia covering up a nuclear accident? 2017-12-01T05:00:00Z The reactor itself became a globally dominant supplier of radioisotopes—in particular, molybdenum-99, a workhorse of medical imaging employed for millions of scans every year. Canada’s neutron scientists lament closure of world’s oldest nuclear reactor 2017-09-21T04:00:00Z The government position paper does not refer directly to the supply of radioisotopes. Brexit: Government sets out post-EU nuclear proposals - BBC News 2017-07-13T04:00:00Z The first system — radioisotope thermoelectric generators, or RTGs — taps heat released from the natural decay of a radioactive element, such as plutonium. NASA Seeks Nuclear Power for Mars 2017-06-30T04:00:00Z Others hope to pry out the neutrino's mass by studying nuclei of holmium-163, a synthetic radioisotope, created with particle accelerators, that undergoes a process nearly the opposite of beta decay called electron capture. Weighing the universe's most elusive particle 2017-06-29T04:00:00Z The second radioisotope to be checked was tritium, a heavy form of hydrogen which, in contrast, decays very rapidly. 'Fossil' groundwater's modern secret - BBC News 2017-04-26T04:00:00Z When a water leak caused by corrosion unexpectedly took the NRU offline later that same year, a global medical radioisotope shortfall ensued. Canada’s neutron scientists lament closure of world’s oldest nuclear reactor 2017-09-21T04:00:00Z Through its supply agency, it also oversees the market for medical radioisotopes. Brexit must preserve advisory networks 2017-03-28T04:00:00Z Delpassand said Friday that he turned to the Texas right-to-try law in 2015, not long after its passage, to increase the number of patients he was treating using an experimental radioisotope therapy. Are right-to-try laws a last hope for dying patients — or a false hope? 2017-03-26T04:00:00Z The reactor is used to create radioisotopes for medical use and to analyze artifacts. University of Missouri nuclear reactor gets new license 2017-01-05T05:00:00Z In the meantime, geologists continued to debate issues as basic as the age of the planet, which was not pinned down at 4.5 billion years—by radioisotope dating—until the 1950s. A world without DNA and black holes: The state of science the last time the Chicago Cubs won the World Series 2016-10-26T04:00:00Z This radioisotope is produced when energetic space particles raining down from the sky hit the oxygen and silicon atoms in quartz minerals. Geologists re-visit giant Zion landslide - BBC News 2016-05-27T04:00:00Z The researcher worked at a center which stored a “significant portion of the world’s supply of radioisotopes,” according to the Center for Public Integrity, a nonprofit, nonpartisan investigative news organization in Washington, D.C. Brussels attacks: Bombers filmed nuclear researcher, expert says 2016-03-24T04:00:00Z This cement will need to block the passage of radioisotopes far into the future. Long-term cement study seeks nuclear waste solution - BBC News 2016-02-13T05:00:00Z The 1,044 centrifuges at the site will produce radioisotopes for use in medicine, agriculture, industry and science. Iran nuclear deal: Key details - BBC News 2016-01-16T05:00:00Z Zerbo said the organization needs some time to detect radioisotopes released from an underground test and that there is no way to determine whether a hydrogen bomb was detonated without that information. The Latest: SKorea to limit access to border industrial park 2016-01-06T05:00:00Z Aids for industry are being developed with radioisotopes as tracers in industrial processes. The Cost of Building Atom Industry 2015-09-28T04:00:00Z Tehran claimed that Arak would make radioisotopes for such humanitarian purposes as treating cancer. Iran’s Unsung Plutonium Concession in Nuclear Deal 2015-09-07T04:00:00Z Centrifuges at the site will produce radioisotopes for use in medicine, agriculture, industry and science. Iran nuclear deal: Key details - BBC News 2015-07-14T04:00:00Z The agreement, signed today in Vienna, paves the way for a rapid expansion of scientific cooperation with Iran in areas as diverse as fusion, astrophysics, and cancer therapy using radioisotopes. Iran nuclear deal opens door to scientific collaborations 2015-07-14T04:00:00Z He said it took over 50 days to detect radioisotopes venting from North Korea’s previous test. The Latest: SKorea to limit access to border industrial park 2016-01-06T05:00:00Z Then, our network tracked the dispersion of radioisotopes around the globe. Nuclear monitoring agency reaches out to scientists 2015-06-18T04:00:00Z By attaching a radioisotope to a prototype drug, the researchers may be able to follow the path the drug takes through the body, helping them to decide at an early stage whether it has potential. The element that can make bones glow - BBC News 2015-05-29T04:00:00Z A drum containing radioisotopes like plutonium was improperly packaged at the Los Alamos National Laboratory near Santa Fe and ruptured, causing a leak. Kitty Litter to Blame for $240 Million Radioactive Leak 2015-03-29T04:00:00Z About half a dozen radioisotopes routinely used for medical, scientific, and commercial purposes—including a radioactive element found in household smoke detectors—could be utilized to make a dirty bomb. Nuns and Nuclear Security 2015-02-28T05:00:00Z Smaller radioisotope units can also help to keep a probe warm in the frigid environment of space. Nuclear power: Desperately seeking plutonium 2014-11-24T05:00:00Z High-level radioactive waste that contains certain other radioisotopes must be transported to one of the small number of facilities in the U.S. that accept it for burial. Ebola Quarantines Must Be Applied With Caution 2014-11-12T05:00:00Z Korea will still find itself with spent fuel, but with less, and the radioisotopes in waste from the SFR will not remain radiotoxic for nearly as long. South Korea Plans Advanced Reactor To Burn Spent Nuclear Fuel 2014-10-29T04:00:00Z To maximize the harmful effects of radiation, victims must be exposed to the highest possible concentration of a radioisotope. The Biggest Threat Dirty Bombs Pose is Panic 2014-09-11T04:00:00Z Shipments from U.S. nuclear labs of tools, rags and other debris contaminated with radioisotopes such as plutonium are on hold indefinitely as scientists probe the accident. Scientists unable to recreate chemical reaction suspected in New Mexico radiation leak 2014-06-28T04:00:00Z For example, NASA’s latest call for mission proposals — for relatively low-cost Discovery-class spacecraft — does not even allow the use of radioisotopes for anything other than minimal heating of instruments. Nuclear power: Desperately seeking plutonium 2014-11-24T05:00:00Z The CTBTO, a nuclear-test monitoring body based in Vienna, maintains a global network of seismic and radioisotope detectors, as well as other instruments. Sound clue in hunt for MH370 2014-06-10T04:00:00Z Ted Wyka, chairman of a federal accident review board, said improperly placed or inoperative air monitors, a substandard ventilation system and mismanagement contributed to the February 14 leak of radioisotopes including plutonium. Radiation Leak at New Mexico Nuclear Site Was Mishandled, Investigator Says 2014-04-24T07:19:42Z That brings to 21 the number of workers who inhaled or ingested particles emitted from the decay of radioisotopes like plutonium while working above ground on February 14 or the following day. Team to re-enter New Mexico nuclear waste site after radiation leak 2014-03-28T01:24:14Z ExoMars will use radioisotope heating units to cope with the cold, but it will rely on solar panels for day-to-day power. Europe begins Mars site selection 2014-03-27T01:37:22Z The first radioisotope power units were developed in the late 1950s and early 1960s by the US and Soviet space programmes. Nuclear power: Desperately seeking plutonium 2014-11-24T05:00:00Z The items include equipment and clothing contaminated with plutonium or other radioisotopes heavier than uranium. Ill health effects seen as unlikely for New Mexico workers exposed to radiation 2014-03-06T03:12:40Z The waste includes discarded machinery, clothing and other items contaminated with plutonium or other radioisotopes heavier than uranium. 13 Workers Test Positive for Radiation at New Mexico Waste Site 2014-02-27T03:01:59Z The waste includes discarded machinery, clothing and other materials contaminated with plutonium or other radioisotopes heavier than uranium. Elevated Radiation Found in Air near New Mexico Nuclear Waste Site 2014-02-21T01:28:01Z Tehran says the reactor is intended for the production of radioisotopes for medical purposes, but its spent fuel will contain plutonium suitable for use in nuclear weapons. Iran blames West for talks failure 2013-11-12T10:28:15Z The United States has used radioisotope power units on 27 missions, from a Navy navigation satellite launched in 1961 to the Mars Curiosity rover in 2011. Nuclear power: Desperately seeking plutonium 2014-11-24T05:00:00Z They propose the use of a vehicle powered by a radioisotope thermal rocket engine. Mars hopper concept 'is feasible' 2013-09-24T11:13:43Z Iran says its nuclear program is peaceful and geared toward generating electricity and producing radioisotopes to treat cancer patients. Rouhani Sworn In as Iran's President 2013-08-04T16:14:40Z Incidentally, the Russians plan to put a meteorological station on the rover's lander, with the difference being that it will be powered by a radioisotope thermoelectric generator - a nuclear battery. Europe's 'seven minutes of terror' 2013-06-21T17:09:48Z “While the tests did not include any radioisotope releases, the pods were able to collect and identify naturally occurring radioisotopes of lead and bismuth produced from the radioactive decay of atmospheric radon.” Drones To Be Deployed As Nuclear Fallout Detectors 2013-03-13T12:56:58Z Maximenko is also helping to sample the plume of Fukushima radioisotopes, which lags behind the debris and is slowly moving east. Tsunami triggers invasion concerns 2013-03-06T18:20:22.950Z This is necessary because Europe does not possess the radioisotope space technology capable of generating the power and heat needed by robots to survive long periods of darkness. Europe shapes Moon lander design 2012-10-24T13:04:56Z Curiosity's unprecedented science payload draws its power from a radioisotope thermoelectric generator, a 4.8-kilogram plutonium fuel source whose radioactive decay provides heat, which devices called themocouples convert to about 110 watts of electricity. NASA's Curiosity Rover Lands Safely on Mars 2012-08-06T08:45:00.397Z The minerals must then be dissolved in a strong acid, which goes through cation-exchange columns to extract the radioisotopes. Planetary science: The time machine 2012-07-25T17:20:40.527Z The levels of radioactivity are well within permitted limits, and below those from other radioisotopes that occur naturally in the environment, such as potassium-40. Tuna record Fukushima pollution 2012-05-29T02:45:50Z A technology that could quickly and efficiently separate radioisotopes for nuclear power plants and nuclear medicine is one that many physicists might find irresistible. Controversial research: Good science bad science 2012-04-25T17:20:31.727Z The environment Fukushima has stopped releasing radioisotopes into the air, and radioactivity in the sea seems to have dispersed with little effect. Nuclear crisis: Fukushima's legacy of fear 2012-03-07T18:20:26.903Z The second most important goal is to find igneous rocks that could be dated by radioisotope analysis to get a better idea of the ages of rocks on Mars. Mars Scientists Propose Landing Sites for Future Rovers 2012-03-01T23:15:03.017Z By using dating techniques based on the radioisotopes carbon-14 and lead-210, we knew that this particular core stretched back about 6,500 years. Climate Change: A planet in flux 2012-02-29T18:21:19.490Z But again, all measured levels of the Fukushima-related radioactivity were far below that from potassium-40, a naturally occurring radioisotope in the environment. Cruise finds Fukushima pollution 2012-02-22T23:05:35Z Most troubling is the lack of any seismic vibrations to support the radioisotope data, according to Ola Dahlman, a retired geophysicist who spent years working with the test-ban group's detection network. Isotopes Hint at North Korean Nuclear Weapons Tests in 2010 2012-02-03T20:15:16.477Z Iran denies it is trying to make nuclear weapons, saying its program is for peaceful purposes only and is geared toward generating electricity and producing medical radioisotopes to treat cancer patients. Bomb Kills Iranian Nuclear Expert 2012-01-11T17:00:00Z The Tehran reactor produces radioisotopes for cancer treatment, according to Mehr news agency. Iran Makes First Nuclear Fuel Rod, Offers to Restart Talks 2012-01-02T08:56:03Z The Tehran reactor produces radioisotopes for cancer treatment, Mehr news agency reported. Iran Makes First Nuclear Fuel Rod as It Offers to Restart Talks 2012-01-02T08:28:52Z Instead its power will come from a radioisotope thermoelectric generator—a 4.8-kilogram supply of radioactive plutonium 238 that decays to produce heat. NASA's Massive Curiosity Rover Nears Launch toward Mars 2011-11-24T12:15:05.677Z Unwilling to let the matter rest, De Geer took the radioisotope data and compared them with the South Korean reports, as well as meteorological records. Isotopes Hint at North Korean Nuclear Weapons Tests in 2010 2012-02-03T20:15:16.477Z We also used the radioisotopes to figure how quickly groundwater moves.” Rare Krypton 81 Isotope Helps Track Water in Ancient Nubian Aquifer 2011-11-21T20:14:39Z Instead, it’s powered by a radioisotope power generator, which produces electricity from the heat produced by the decay of plutonium. Next Mars Rover Is Prepared For Launch 2011-11-10T22:30:09Z Tajoura continues to stock large quantities of radioisotopes, radioactive waste and low-enriched uranium fuel after three decades of nuclear research and radioisotope production, he said. Ex-IAEA official warns of Libya "dirty bomb" material 2011-08-24T07:46:33Z The frequent tanners agreed to be injected with a radioisotope that allowed researchers to monitor how tanning affected their brain activity. Well Blog: How Tanning Changes the Brain 2011-08-12T04:01:49Z However, also last week, in a separate vote, the full House rejected the other half of the strategy—DOE's request for $10 million to begin the work needed to generate the radioisotope. Using Nuclear Fuel for Future NASA Missions Gets Boost 2011-07-21T20:04:16Z This might prevent the radioisotopes from entering groundwater, but suggests that cleaning up the more radioactive public spaces in Fukushima prefecture will not be easy. No Fallout Legacy for Japan's Farms Despite Prior Contamination of Food 2011-07-12T21:45:00.217Z More generally, governments worry that radioisotope data are too sensitive to share. Full transparency 2011-06-17T17:50:10.807Z In the days that followed, overheating triggered hydrogen explosions that spewed radioisotopes into the air. [News Focus] Tohoku-Oki Earthquake: Fukushima Revives The Low-Dose Debate 2011-05-19T18:25:06.877Z Flooding the cores means that water contaminated with radioisotopes will continue to spill out into the environment. Nuclear accident: Fukushima set for epic clean-up 2011-04-13T17:20:32.613Z They also plan to model the long-term behavior of radioisotopes in the marine environment, and the overall radiation doses to which marine organisms will be exposed. Radiation Release Will Hit Marine Life 2011-04-12T19:45:00.590Z The scientists studied crops at a Tokyo research field, including cabbages and potatoes that were planted a few weeks after rains showered the field with radioisotopes from Fukushima. No Fallout Legacy for Japan's Farms Despite Prior Contamination of Food 2011-07-12T21:45:00.217Z But missing from her analysis is any mention of the radioisotope polonium 210 — the most lethal component of tobacco and surely the most destructive ionizing radiation to which world populations are ordinarily exposed. Threats Big and Small (2 Letters) 2011-04-11T22:12:36Z After explosions, copious radioisotope leaks and a liberal dousing with sea water, the reactors are a write-off. Japan's long road ahead 2011-04-06T17:20:25.520Z The zeolite removed the caesium and other radioisotopes, leaving almost pristine water, which was eventually evaporated at a facility on the site. Nuclear accident: Fukushima set for epic clean-up 2011-04-13T17:20:32.613Z “Here radioisotopes are drifting in water and air, and not necessarily producing an external whole-body exposure and are being taken up in very small doses into the body,” he said. Radiation Is Everywhere, but How to Rate Harm? 2011-04-04T21:26:24Z Some radioisotopes, such as iodine-131, accumulate in the thyroid gland where they may pose a cancer risk. Radiation Now Found in Rain in California, Idaho, Minnesota 2011-04-03T18:00:44Z As the radioisotope decays, it produces heat energy that is converted by thermoelectric materials into the electricity that powers the space probe. The Trillion Mile-Per-Gallon Engine 2011-04-02T04:54:31Z But it may be many weeks, or months, before the power plant is tamed — and years before parts of northern Japan tainted by long-lived radioisotopes are habitable again. Nuclear power: Radioactivity spreads in Japan 2011-03-30T17:20:34.827Z In a worse case, the spent fuel rods catch fire, releasing millions of curies of volatile radioisotopes directly into the atmosphere. The Future of Fukushima Prefecture 2011-03-24T04:10:41Z Nuclear accidents produce a spectrum of radioactive fission products, including various radioisotopes of iodine, caesium and zirconium. Radiation Data from Japanese Disaster Starts to Filter out 2011-03-18T16:45:11.967Z If a leak worsens, the same radioisotopes would continue to be released in greater amounts, increasing the severity and duration of potential exposures. Radiation Effects Vary 2011-03-16T00:17:09Z While such rods are spent in terms of their usefulness in the reactor core, they still contain deadly radioisotopes that remain hazardous. Failure of Imagination Can Be Deadly: Fukushima is a Warning 2011-03-12T22:45:00.483Z Emissions are also lower than immediately after the initial explosions, but radioisotope release continues and trends are unpredictable. Nuclear power: Radioactivity spreads in Japan 2011-03-30T17:20:34.827Z Dr. Finch used radioisotopes to measure the body’s production of red cells and their life span. Clement A. Finch, Pioneer in Hematology, Dies at 94 2010-07-06T06:04:00Z Dr. Finch used radioisotopes to measure the body's production of red cells and their life span. Dr. Clement Finch, 'Mr. Iron' at UW, dies at 94 2010-07-06T15:27:00Z Examples: PET or PET/CT scanning, diagnostic radioisotope scan, endocrine testing, infusion studies. Best Children's Hospitals 2010-11: Behind the Terms 2010-06-02T22:00:00Z American industry and agriculture are making increasing use of radioisotopes to improve manufacturing, testing, and crop-raising. State of the Union Address |
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