Sentences with phrase «eddington radiation limit»

Wheat ears from these plants contained 300 - 500 Bq kg - 1 — within the prescribed radiation limit.

«Setting [such radiation limits] for elementary schools is inexcusable,» Toshiso Kosako, a radiation health expert at the University of Tokyo, said on 30 April, when he resigned as an adviser to Prime Minister Naoto Kan on the nuclear crisis.

This «speed limit» is called the Eddington radiation limit.

Guidelines from the International Radiation Protection Association (IRPA) suggest overall radiation limits of 1 milliwatt per square centimeter «averaged over 6 minutes (0.1 h) period.»

As the radiation limits are reviewed and raised:

The next US President uses his influence with the leaders of the other countries that are most influential in the IAEA to get the IAEA representatives to support a process to re-examine the justification for the allowable radiation limits — as the US announced in January it will do over 18 months:

Once the IAEA starts increasing the allowable radiation limits for the public this should be the trigger to start the process that leads to reducing the cost of nuclear energy; and the catalyst to keep reducing costs over the long term as the radiation limits are reviewed and increased periodically.

Once the radiation limits begin to be increased this should have a catalytic effect on reducing emissions: 1) it will mean radiation leaks are understood to be less dangerous that currently thought > less people evacuated from effected zones > reduced cost accident of accidents — reduced accident insurance cost; 2) population takes another look at the effects of radiation > gains an understanding it is much less harmful than they thought > fear subsides > less opposition > easier and less expensive to find sites supported by the people nearby > planning and sight approval costs come down over time

Next US President uses his influence with the leaders of the other countries that are most influential in the IAEA to get their IAEA representatives to support a process to re-examine the justification for the allowable radiation limits — as the US has just announced (last week) it is to do over the next 18 months.

Coal fired power plants can not meet the radiation limit.

Not exact matches

Mars colonists will get blasted with radiation levels eight times higher than government limits on Earth.

Staying inside can also limit how much invisible nuclear radiation produced by a blast will reach your body.

Too much exposure over a short time can damage the body enough to limit its ability to fix itself, fight infection, and perform other functions, leading to a dangerous condition called acute radiation sickness or syndrome.

The reports, along with earlier research show that current limits for mobile phone radiation, «remain acceptable for protecting the public health,» Jeffrey Shuren, director of the FDA's Center for Devices and Radiological Health, said in an emailed statement.

Even darker, they note, flying 85,000 miles a year exceeds the regulatory limit for public exposure to radiation.

Its ordinarily limited radioactivity makes plutonium safe for terrorists or other thieves to transport with little risk of radiation injury.

«There are no official dose limits for aircrew in the United States,» the US Centers for Disease control writes in its aircrew safety guidelines on cosmic radiation.

Some weeks later, after radiation therapy that was designed to limit the extent of the surgery, he wrote to tell me that the doctors were astounded to learn that the tumor had been stopped cold by the radiation and that surgery would not be required.

A year after writing The Mass on the World, Pere Teilhard further defined his thought, in Mon Univers: «To interpret adequately the fundamental position of the Eucharist in the economy of the world... it is, I think, necessary that Christian thought and Christian prayer should give great importance to the real and physical extensions of the eucharistic Presence... As we properly use the term «our bodies» to signify the localized centre of our spiritual radiations..., so it must be said that in its initial and primary meaning the term «Body of Christ» is limited, in this context, to the consecrated species of Bread and Wine.

You can still nurse if you are having radiation therapy, but having had radiation will limit milk production in the affected breast.

Limiting exposure to microwaves, dental and medical equipment, and even absorbing too much UV radiation from the sun help keep baby and mom healthy.

Governor Andrew M. Cuomo today signed legislation to better protect teens from dangerous exposure to UV radiation by limiting their access to indoor tanning facilities.

Along the way, according to a 2013 study, you'd get dosed with the radiation equivalent of a whole - body CT scan every five to six days, increasing your lifetime cancer risk above the limits set by NASA.

Enormous clouds of these tiny grains scatter and absorb some of the radiation emitted from the stars — especially visible light — limiting what can be seen by telescopes here on Earth.

Because synchrotron radiation is one of only a limited number of phenomena that can create polarized light, these data provided the crucial link between synchrotron radiation and the prompt phase of GRB160625B.

The crops were harvested on 16 May, and contained low levels of radiation — around 9 becquerels per kilogram (Bq kg - 1; wet weight), much lower than the 500 Bq kg - 1 safety limit for human consumption.

Fairén says there is growing evidence that the harsh environment on the martian surface — a combination of frigid temperatures, caustic chemicals and deadly cosmic radiation — would kill Earth's microbes quickly, especially in the limited numbers that ride along with robots.

In fact, it is the accumulation of radiation dose that is the limiting factor for the maximum length of manned space flights.

But the twin stars» radiation pressure has its limits; if Heller's and Hippke's 100,000 - square - mter light sail came in any faster than 4.6 percent light - speed, it would simply overshoot the system.

When astronauts are outside of Earth's magnetic field, spaceships provide only limited shielding from radiation exposure, explains study leader Robert D. Hienz, Ph.D., an associate professor of behavioral biology at the Johns Hopkins University School of Medicine.

«It was nowhere near as complex of a release as Chernobyl, which was everything from the core of the reactor,» says Peter Caracappa, a radiation safety officer and clinical assistant professor of nuclear engineering at Rensselaer Polytechnic Institute in Troy, N.Y. «This was a slow release,» he adds, and it was limited to a few radioactive materials, including iodine 131, which has a half - life of just eight days and therefore does not lead to long - term contamination.

And space physicians still need to find ways to limit other hazards of human spaceflight that don't have anything to do with weightlessness, such as disturbed sleep and exposure to cosmic radiation.

The radiation dose they calculated was 0.66 sieverts, researchers report in the May 31 Science; the agencies» limit for astronauts is 1 sievert.

The international safety limit for radiation workers is 50 millisieverts per year.

This summer, Ronald Herberman, director of the University of Pittsburgh Cancer Institute, sent a memo to staffers warning them to limit their cell phone use and to use hands - free sets in the wake of «growing evidence that we should reduce exposure» to cell phone radiation.

The X-ray data also indicates that radiation from material surrounding this black hole has consistently surpassed the so - called Eddington limit, defined by a balance between the outward pressure of radiation from the hot gas and the inward pull of the gravity of the black hole.

The study was a randomized phase II trial testing whether the addition of local treatment, in the form of consolidative radiation therapy, to the standard treatment of systemic therapy improved progression - free survival for patients with limited metastatic NSCLC.

«There is a significant possibility that local therapy, such as consolidative radiation, may become an important part of the management of limited metastatic NSCLC patients, but this validation must take place in randomized phase III studies.

In extreme cases, the application of X-rays is limited by these side effects, known as «radiation damage».

Combining radiation therapy with chemotherapy for patients with limited metastatic non-small cell lung cancer (NSCLC) may curb disease progression dramatically when compared to NSCLC patients who only receive chemotherapy, according to a new randomized phase II clinical trial reported today at the 59th Annual Meeting of the American Society for Radiation Oncology (ASTRO).

By far the most rigorously researched of the Tintin stories, it features nuclear fission, the effects of gravitation in space and why meteorites make lunar craters, as well as side references in Professor Calculus's log book to the «constant of solar radiation» and the «limits of the solar spectrum in the ultraviolet».

«Adding radiation to chemotherapy may dramatically improve survival for advanced NSCLC: Randomized phase II trial finds progression - free survival expectancy nearly tripled with addition of consolidative stereotactic radiation therapy for limited metastatic disease.»

«Drug could limit spread of deadly brain tumors: Study shows PPF could help treat glioblastomas by sensitizing tumors to chemotherapy, radiation treatments.»

Soot particles, also known as black carbon aerosols, affect climate by absorbing sunlight, which warms the surrounding air and limits the amount of solar radiation that reaches the ground.

There has been a decrease in side effects due to the development of better treatments, limiting the use of radiation.

Because different species vary widely in their susceptibility to radiation, this limited data has made it difficult to study how wild animals adapt to radiation exposure.

Newborn giant suns produce fierce radiation that blows away gas and dust and keeps stars from violating the weight limit, Figer believes.

Because children are known to be more susceptible than adults to risks of cancer from radiation, Physicians for Social Responsibility, a U.S. antinuclear proliferation group, condemned the exposure limit as «unconscionable.»

This transfer of energy between particles with different speed limits is called Cherenkov radiation, and it makes the reactor pools of nuclear power stations glow with a bluish light.

When mice were allowed to eat without limit and were then exposed to radiation, their intestinal cells» (in red) regeneration was limited (left).