Sentences with phrase «of radiation intensity»

The rats in the study were exposed to a range of radiation intensities, but most of these were higher than those permitted by the current safety limits that are imposed on mobile phone manufacturers.

Not exact matches

Or to adopt another image one might say that the «psychic tint» of the earth, studied at a great distance by some celestial observer, would be seen, in the course of eons of geological time, to become gradually heightened in intensity until it reaches the peculiarly moving moment of climax when, in a spread of more active radiation covering Africa and southern Asia, a series of sparks begins to glow, foreshadowing the incandescence which is «hominization».

Conventional radiation with photons gave way to intensity - modulated radiation therapy, or IMRT, in which more precise beams of photons could be moved dozens or hundreds of times with varying intensities, attacking tumors in three dimensions with safer high doses.

And if this beam is also focused into a speck with a three millimeter diameter, then we get an intensity of light an order higher than the intensity of light close to the sun's surface, which has a radiation power of about 20 gigawatts a square meter.

Earth's magnetosphere extends over a radius of a million kilometers, which acts as the first line of defence, shielding us from the continuous flow of solar and galactic cosmic rays, thus protecting life on our planet from these high intensity energetic radiations.

Reinhart - King said their findings might enable future fractionated radiation — longer term bouts of therapy using a lower intensity of radiation than most of today's therapies.

The actual data did not look like much, mostly line graphs showing the intensity of radiation emitted by the stars at various wavelengths, but the meaning hidden behind those numbers had us talking all at once, lost in the fever of discovery.

Scientists from the UNIGE explain the global temperature drop by a stratospheric injection of large amounts of sulphur dioxide reducing the intensity of solar radiation reaching the surface of Earth.

They bombarded a cell with X-rays to see how often different mutations appeared as a function of the radiation's frequency and intensity.

The amplification in Steinhauer's model allows him to detect only one frequency of the radiation, so he can not be sure it has Hawking's predicted intensity at different frequencies that true Hawking radiation would have.

The intensity of Cherenkov radiation emitted by the particle shower produced by the gamma ray is proportional to the gamma ray's energy, whereas the geometry of the shower betrays its direction of origin.

It's very, very difficult to quantify these particle intensities in the harsh environment of the radiation belts, but we are doing just that.

This residual radiation is critical to the study of cosmology because it bears on it the fossil imprint of those particles, a pattern of miniscule intensity variations from which we can decipher the vital statistics of the universe, like identifying a suspect from his fingerprint.

The Cosmic Microwave Background radiation, or CMB for short, is a faint glow of light that fills the universe, falling on Earth from every direction with nearly uniform intensity.

The researchers tested the structure by placing it in a chamber of water and exposing it to a solar simulator — a light source that simulates various intensities of solar radiation.

Given the revised timeline in this region, Willenbring and colleagues determined that the increased precipitation resulted from changes in the intensity of the sun's radiation on the Earth, which is based on the planet's tilt in orbit.

Anthony Aguirre, Matt Johnson, Matt Kleban and others have pointed out that a collision of our expanding bubble with another bubble in the multiverse would produce an imprint in the cosmic background radiation — a round spot of higher or lower radiation intensity.

«The high - intensity X-ray beamlines at the ESRF, equipped with state - of - the - art Dectris detectors, were crucial for getting high quality crystallographic data from the weakly diffracting and radiation sensitive crystals of the large polymerase complex,» says Cusack.

The absorber reinforces the peaks of high intensity radiation, while dampening the low intensity radiation.

Cloud droplets tend to scatter light very efficiently, so that the intensity of the solar radiation decreases with depth into the cloud, hence the grey or even sometimes dark appearance of the clouds at their base.

A number of techniques have been developed to reduce exposure to the heart including prone positioning (lying flat on the belly on a bed that only exposes the left breast), intensity - modulated radiation therapy (IMRT), and accelerated partial breast irradiation.

The CALLISTO (Compound Astronomical Low - cost Low - frequency Instrument for Spectroscopy in Transportable Observatory) spectrometers, designed and built by electronics engineer Christian Monstein of the Institute for Astronomy of the Swiss Federal Institute of Technology Zurich (ETH Zurich), record the intensity of electromagnetic radiation at radio frequencies, between 45 and 870 megahertz.

But Ozernoy says that both the intensity and the spectrum of the synchrotron radiation depend on the black hole's mass.

Focusing the machine's full output into a spot of only 100 nanometers in size, the team generated an X-ray beam with intensity equivalent to all of the sun's radiation that is striking Earth's surface but concentrated in an area with the diameter of a human hair.

It is those charged particles, or ions, that the detectors pick up and quantify, revealing the intensity of the radiation.

This is the first population - based study to compare the follow - up intensity of American men with prostate cancer who have not undergone aggressive treatment with those who opted to undergo various forms of aggressive therapy, such as surgery and radiation.

Their curse was the inverse square law, which states that the intensity of electromagnetic radiation is inversely proportional to the distance from the emitting source.

Such material could be hidden inside a lead container, making the radiation levels leaking out too low for the Geiger counter to detect, or the guard might be 100 meters away from the source, allowing the intensity of the radiation to dissipate before it reaches the detector.

According to Marsden, it is hard to predict the intensity of such low - frequency radiation, so the chances of positively identifying a wave are very small.

His work became of paramount importance when he demonstrated that the intensity of solar radiation was related to the Sun's magnetic activity, which had (and still has) crucial implications for numerous human activities, such as communications systems and power lines.

Here, our radiation oncologists use a special type of RT — called intensity modulated radiation therapy (IMRT)-- to treat stomach cancer.

What's more, oncologists can program the IMRT machine to deliver these radiation beams with varying levels of intensity, so that the higher toxicity beams are not aimed near healthy tissue.

Our radiation oncologists provide the most advanced types of radiation therapy available today, including intensity - modulated radiation therapy and cone beam image - guided radiation therapy.

University of Chicago radiation oncologists were among the first in the nation to use intensity modulated radiation therapy (IMRT) to treat pancreatic cancer.

It is believed that the PETM was likely initiated by changes of the orbital parameters of the Earth (eccentricity, obliquity and precession of axis) causing an increase in the intensity and distribution of solar radiation reaching the earth (Sexton et al, 2011).

Dr. Gaspar has 25 years of experience treating thoracic and brain tumors, utilizing stereotactic techniques, intensity modulated radiation therapy and image guidance.

Utilizing treatment planning software with PET / CT and MRI fusion capability, the treatment is delivered with a state - of - the - art linear accelerator equipped with on - board imaging and intensity - modulated radiation therapy (IMRT) capabilities.

Solar storms are known to significantly heighten the amount of radiation penetrating the Martian atmosphere, and at the peak of the storm the RAD instrument detected surface radiation levels over double the intensity of any that it had ever detected since touching down on the Martian surface in 2012.

2004: IMRT (Intensity Modulated Radiation Therapy) Program began to deliver high - precision radiation that conforms to the three dimensional shapes of tumors and delivers higher and well defined doses of radiation to tumors, and even specific areas within tumors, while minimizing radiation to surrounding normal tissue.

Working together with a multidisciplinary team of cancer specialists, our department uses highly advanced cancer care techniques including multimodality imagaing for defining tumor volume, state - of - the - art intensity modulated radiation therapy (IMRT), MRI - based treatment planning, and interstitial brachytherapy using high dosage rate treatment.

The Star - Planet Activity Research CubeSat (SPARCS) will be a 6U CubeSat devoted to photometric monitoring of M stars in the far - UV and near - UV, measuring the time - dependent spectral slope, intensity and evolution of M dwarf stellar UV radiation.

Only in lasers and some other situations of very high intensity of radiation that strength is large enough to be observable.

It's of no practical importance here since the intensities of the radiation are much too low, although it does need to be included in order to complete Einstein's argument.)

Treatment of disorders of the central nervous system including malignant, benign and functional diseases, Stereotactic radiosurgery (SRS) via both Gamma Knife and Linear Accelerator platforms, Stereotactic ablative radiation (SABR), Proton Beam Therapy (PBT), External beam radiation therapy (EBRT), Intensity - modulated radiation therapy (IMRT), Volumetric arc therapy (VMAT), Image - guided radiation therapy (IGRT)

The high intensity of radiation from such reactors will bring about changes in chemical and biological systems which may be of immense practical value, once they have been understood.

as we sleep on our coil - spring mattresses, we are in effect sleeping on an antenna that amplifies the intensity of the broadcast FM / TV radiation.

In many cases the development of secondary cancers are reported due to the high intensity of the radiation application, like in transmissible venereal tumors.

Course of radiation therapy delivered with intensity - modulated radiation therapy (IMRT)(typically 18 - 20 daily treatments): $ 6000 - 7500

While Dr. Arkans is experienced with all types of radiation oncology, he maintains a special interest in Stereotactic Radiation Therapy (SRT) and Intensity modulated Radiation Therapy (IMRT), as well as intrathoracic radiation therapy techniques.

Without that, our world is a monochromatic place bathing in electromagnetic radiation of varied intensity and wavelengths.