Sentences with phrase «as radiation sources»

Not exact matches

K - alpha and bremsstrahlung x-ray radiation backlighter sources from short pulse laser driven silver targets as a function of laser pre-pulse energy

«Measurements of the extragalactic background radiation are always hard to get, because this signal is very faint and, as a result, its detection is strongly dependent on how well one can remove the sources of contamination,» says Angelica De Oliveira - Costa, an expert on cosmic background observations at the Massachusetts Institute of Technology.

Incredible as it may seem, heat radiation is the greatest source of uncertainty when projecting which asteroids could hit Earth in the far future.

«Capacities,» which includes infrastructure projects such as genomics data banks, radiation sources, and observatories as well as funding for science - and - society programs, will also receive about $ 1 billion per year.

AMANDA receivers are sunk as deep as 1.5 kilometers into antarctic ice to filter out all sources of radiation but neutrinos.

Like turning the knob on a radio, the team adjusted the pulse so that, if the artificial horizon emitted any Hawking radiation, its wavelength would be between 800 and 900 nanometers, a range that could not be confused with other sources such as laser - induced fluorescence.

The researchers took care to rule out the possibility of other sources such as black body radiation and surface polarization as reasons behind the production of visible light.

When illuminated by a source of radiation, the material behaved as though it were naturally magnetic.

Water sourced from the low - gravity moon, Schmitt explained, could be utilized as a protective, radiation - thwarting cocoon, built into the superstructures of Mars - bound crewed spacecraft.

The United States Department of Health and Human Services proclaimed in 2002 that ultraviolet (UV) radiation from the sun and artificial sources, such as tanning beds and sun lamps, is a known carcinogen.

As a result, creating coherent artificial sources of terahertz radiation in order to harness it for human use requires some ingenuity.

Although the KamLAND detector uses Japanese nuclear reactors as its neutrino source, Freedman says that the loss of the Fukushima reactor and ensuing radiation will affect the experiments little.

The total radiation delivered, 0.5 gray (Gy), was high relative to environmental levels (from sources such as naturally occurring radon in rock), but significantly lower than equivalent human doses experienced in CAT - scans or cancer therapy.

RIAR produces Cf - 252 neutron sources for medical and industrial uses, and gamma radiation sources for medical use, such as Co-60 and Ir - 192 sources with holders, Gd - 153 sources, and manually installed Co-60 sources.

As a result, the sources of radiation exposure would be different isotopes for a thorium - based radiation source than uranium - based source, and the relationship between exposure and health effect would be different as welAs a result, the sources of radiation exposure would be different isotopes for a thorium - based radiation source than uranium - based source, and the relationship between exposure and health effect would be different as welas well.

The health literature confirming the links between radon and health include studies of many uranium mining populations, as well as other mining districts and mineralized areas with high levels of naturally occurring radiation sources.

radiation Energy, emitted by a source, that travels through space in waves or as moving subatomic particles.

Due to its cell killing effect, radiation therapy is widely used as a primary source of treatment for numerous types of cancers.

Although Solar radiation and lightning (which has been detected by the ESA's Venus Express probe in 2007) should be producing large amounts of carbon monoxide (CO), the gas was found to be scarce, as if something was removing it (such as hydrogenogens, diverse bacteria and archaea that grow anaerobically utilizing CO as their sole carbon source and water as an electron acceptor to produce carbon dioxide and molecular hydrogen as waste products).

And for a vegan bodybuilder who must unfortunatelly play tetris with the food sources that he choses in order to give to his body the right ammounts of aminos, restricting SPI and soy foods so much does not make his goal any easier.There are sometimes that you need a meal thats complete with aminos and soy provides that meal with the additional benefits of lacking the saturated fats trans cholesterol and other endothelium inflammatory factors.I'm not saying that someone should go all the way to 200gr of SPI everyday or consuming a kilo of soy everyday but some servings of soy now and then even every day or the use of SPI which helps in positive nitrogen balance does not put you in the cancer risk team, thats just OVERexaggeration.Exercise, exposure to sunlight, vegan diet or for those who can not something as close to vegan diet, fruits and vegetables which contains lots of antioxidants and phtochemicals, NO STRESS which is the global killer, healthy social relationships, keeping your cortisol and adrenaline levels down (except the necessary times), good sleep and melatonin function, clean air, no radiation, away from procceced foods and additives like msg etc and many more that i can not even remember is the key to longevity.As long as your immune system is functioning well and your natural killer cells TP53 gene and many other cancer inhibitors are good and well, no cancer will ever show his face to you.With that logic we shouldn't eat ANY ammount of protein and we should go straight to be breatharians living only with little water and sunlight exposure cause you like it or not the raise of IGF1 is inevitable i know that raise the IGF1 sky high MAYBE is not the best thing but we are not talking about external hormones and things like this.Stabby raccoon also has a point.And even if you still worry about the consumption of soy... http://www.ncbi.nlm.nih.gov/pubmed/21711174.

They also include less - visible sources, such as radiation and electromagnetic stressors from cell phones and towers.

ROS are also generated by exogenous (external) sources such as ionizing radiation.

Managing Hashimoto's hypothyroidism means working to keep the immune system stable and avoiding toxins as much as possible, even if the source is cell phone radiation.

[3] Hazardous environmental sources such as pollution, toxic metals, alcohol, cigarette smoke, radiation, industrial chemicals, and medications expose us to free radicals.

The top panel shows compact sources of submillimetre radiation detected by APEX as part of the ATLASGAL survey, combined with complementary data from ESA's Planck satellite, to capture more extended features.

Lupo believes that heat sources, such as radiation, condensation, and surface heating and cooling, have a significant role in a blocking's onset and duration.

You're confusing the rate at which radiation intensity drops from the surface of a sphere as opposed to a point source.

It does seem at first glance that a warm troposphere would warm the stratosphere, but the explanation that more of the earth - sourced infrared radiation is absorbed lower in the the troposphere by higher levels of CO2 makes sense if one thinks about the thermodynamic losses involved in the CO2 re-radiation processes; some of the earth - sourced infrared is transformed into kinetic energy and only a fraction is reradiated as more infrared radiation (if I'm understanding correctly).

Despite the enthusiasm for nuclear energy as a carbon - zero energy source, there are still issues around radiation, safety, uranium mining, and nuclear weapons through enrichment.

So I am totally deaf to «lab experiments» where CO2 gas mixtures are subjected to radiation sources that are ten times the real earth ambient source Temperature, and therefore 10,000 times as bright as the earth surface, and emitting a completely different spectrum at one tenth of the real LWIR wavelengths, which have completely different interactions with the CO2.

The spacecraft's Atmospheric Infrared Sounder, an instrument that measures infrared heat radiation as it leaves the atmosphere, is expected to provide vastly more and better temperature and humidity readings worldwide than are available now from weather satellites and other sources.

In fact, they reduce the required energy to such an extent that solar radiation is sufficient as an energy source.

The warmer body cools more slowly as a result because a ready source of energy from incident radiation is quicker to just «reflect» back into the atmosphere, rather than have to convert its own thermal energy to radiated energy.

And such things as wind or lightning doesn't count [they are not radiation sources] nor something like a volcanic activity or anything localized.

Now, add a source at greater than 15C (like a warm earth surface) and ad long as the rate of incoming 15 um radiation is greater than the 15 um radiation rate you already measured from your hohlraum there will be disequilibrium and the temperature of the hohlraum (not just the CO2 but all of the gas) will increase until the hohlraum is again emitting the same amount of 15 um radiation as is coming in.

Each higher and cooler layer in turn emits thermal radiation corresponding to its temperature; and much of that also escapes directly to space around the absorption bands of the higher atmosphere layers; and so on; so that the total LWIR emission from the earth should then be a composite of roughly BB spectra but with source temepratures ranging ove the entire surface Temeprature range, as well as the range of atmospheric emitting Temperatures.

I notice George Monbiot is accepting Arthur Scargill's challenge as long as he can choose the source of radiation in the room.

If the gas permits irreversible heat transport at all by any means, including by mere thermal radiation (also irreversible) then the entropy of the system will increase as it becomes isothermal (assuming isolation and no external or internal sources of continuous work).

As the dominant reservoir for heat, the oceans are critical for measuring the radiation imbalance of the planet and the surface layer of the oceans plays the role of thermostat and heat source / sink for the lower atmosphere.

Misleading, inasmuch as the concept of a hot plate assumes an external heat source capable of maintaining an object sitting upon it at a constant temperature elevated above ambient, where radiation absorbed is equal to radiation emitted.

Prof Claes Johnson (see Computational Blackbody Radiation) and I are in total agreement as to the reason being that blackbodies do not convert the energy in radiation that was emitted spontaneously by a cooler source than their own temperature.

This must result in about 85 times as much infrared radiation from the Sun, at 3.3 microns wavelength, being sent back into space by the absorption and re-radiation from methane molecules in the upper atmosphere as could be re-radiated into the lower atmosphere for infrared radiation sourced from the warmed Earth.

As the Chief tells us, clouds have changed from the late 20thC to the early 21stC, resulting in a greater reflection of incoming SW radiation (the prime source of our planet's warming).

The relative humidity suggests as well that the OLR from the water vapour in the spectral regions where figure 6 - A shows high optical thickness has been slowly increasing, as the source of radiation to the cosmos moved to slightly «lower and warmer» layers.

The heat of vaporization comes from the same source as the heat used to elevate the surface temperature n the first place, the incoming IR radiation.

However, if radiation from outside (independently on its source) delivers the energy to the surface layer then temperature of the surface layer will not decrease as in the absence of this extra energy.

It is assumed that all the solar radiation from relevant absorption band makes it to the CO2 boxes through all the other boxes and does this constantly with no loss and if it did the model might be correct, as it is there are tens of thousands of other boxes between each CO2 box so the absorption and the storing and the re emitting of this narrow band can not be total or anywhere near total and the incoming source is not constant nor does all all the solar radiation actually make it the CO2 boxes, it would only be a proportion the rest being intercepted and dissipated beforehand.

The HFSS provides an external source of intense thermal radiation, mostly in the visible and IR spectra that closely approximates the heat transfer characteristics of highly concentrating solar systems, such as solar towers and dishes.

It might help you if you had a few concepds in mind too when considering this subject, like «space» is the big energy «sink» with old sol (and the internal heat generating processes (including nuclear) of the earth) as sources... any mechanism that results in a delay of energy leaving earth, such as a «bounce - back» or a re-rad of energy (like back radiation) certainly is going to increase the «energy flux» in the system, and this in any way you want to frame the argument translates to a «higher» energy state, and a higher so - called temperature» (movement in matter, velocity of air molecules or oscillations in certain «resonant molecules) as well.

If you used a parabolic mirror aimed at a warm wall to heat water you could heat it to the temperature of the wall then the heating stops because the object being heated, now at the same temperature as the heat source, emits back as much radiation as it receives.