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Ionizing radiation can cause the destruction of microorganisms and insects involved in food spoilage or, at lower doses, can inhibit their action.
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Ionizing and radiation
Ionizing electromagnetic radiation creates high-speed electrons in a material and breaks chemical bonds, but after these electrons collide many times with other atoms in the material eventually most of the energy is downgraded to thermal energy ; this whole process happens in a tiny fraction of a second.
Ionizing radiation is hazardous to life ( hence its usefulness in sterilisation ); for this reason irradiation facilities have a heavily shielded irradiation room where the process takes place.
Ionizing radiation comes from radioactive materials, X-ray tubes, particle accelerators, and is present in the environment.
Ionizing electromagnetic radiation is that for which the photons making up the radiation have energies larger than about 10 electron volts.
* Ionizing radiation
Ionizing radiation works by damaging the DNA of exposed tissue leading to cellular death.
Ionizing radiation causes deletions in chromosomes.
Ionizing radiation, such as X-rays, alpha rays, beta rays, and gamma rays, are undetectable by the human senses, therefore a measuring device is used to detect, measure and record this, and in some cases give an alarm when a preset level is exceeded.
* Ionizing radiation
* Ionizing radiation units
* Ionizing radiation level examples-Example exposure scenarios
* Photomultipliers are used in conjunction with scintillators to detect Ionizing radiation by means of hand held and fixed radiation protection instruments, and particle radiation in physics experiments.
* Ionizing radiation
Ionizing radiation hazard symbol
Ionizing ( or ionising ) radiation is radiation composed of particles that individually carry enough energy to liberate an electron from an atom or molecule without raising the bulk material to ionization temperature.
Ionizing radiation is generated through nuclear reactions, either artificial or natural, by very high temperature ( e. g. the corona of the Sun ), or via production of high energy particles in particle accelerators, or due to acceleration of charged particles by the electromagnetic fields produced by natural processes, from lightning to supernova explosions.
Ionizing radiation includes cosmic rays, alpha, beta and gamma rays, X-rays, and in general any charged particle moving at relativistic speeds.
Ionizing radiation includes some portion of the ultraviolet spectrum, depending on context.
Ionizing radiation is ubiquitous in the environment, and comes from naturally occurring radioactive materials and cosmic rays.
Ionizing radiation is invisible and not directly detectable by human senses, so instruments such as Geiger counters are usually required to detect its presence.
Ionizing and can
Ionizing radiations may produce highly reactive free radicals that can break the bonds in the DNA.
Ionizing and cause
# Ionizing radiation: α -, β -, γ -, or x-rays cause ejection of an electron from the initiating species, followed by dissociation and electron capture to produce a radical ( Figure 5 ).
Ionizing and at
The National Academy of Sciences ( NAS ) Biological Effects of Ionizing Radiation ( BEIR ) report, NAS BEIR VII was an expert panel who reviewed available peer reviewed literature and writes, " the committee concludes that the preponderance of information indicates that there will be some risk, even at low doses ".
* Effects of Ionizing Radiation at Books Free Delivery-Effects of ionizing radiation: United Nations Scientific Committee on the effects of atomic radiation: Unscear 2006 Report, Report ot the General Ass
Although it has a symmetric structure, Ionizing one phosphate happens at a very different levels of acidity than ionizing both: pK < sub > 1 </ sub > = 3 and pK < sub > 2 </ sub > > 7. 5.
Ionizing and .
Ionizing radiations and reactive oxygen species often oxidize guanine to produce 8-oxoguanine.
Ionizing radiation is widely used in industry and medicine, and it presents a significant health hazard.
Ionizing radiation produces free electrons and holes.
# Ionizing radiation such as that created by radioactive decay or in cosmic rays causes breaks in DNA strands.
Ionizing Radiation Effects in MOS Devices and Circuits.
Ionizing radiation effects in MOS oxides.
The notion of radiation hormesis has been rejected by the National Research Council's ( part of the National Academy of Sciences ) 16 year long study on the Biological Effects of Ionizing Radiation.
radiation and can
A belowground basement can cut the fallout radiation to one-tenth of the outside level.
Moderate radiation doses of from 100,000 to 200,000 rads can extend the shelf life ( at 35 F ) of fresh beef from 5 days to 5 or 6 weeks.
Ataxia can be induced as a result of severe acute radiation poisoning with an absorbed dose of more than 30 Grays.
Adaptive radiation, a characteristic example of cladogenesis, can be graphically illustrated as a " bush ", or clade, of coexisting species ( on the tree of life ).
Four features can be used to identify an adaptive radiation:
The binding of nuclear receptors by glucocorticoids, heat, radiation, nutrient deprivation, viral infection, hypoxia and increased intracellular calcium concentration, for example, by damage to the membrane, can all trigger the release of intracellular apoptotic signals by a damaged cell.
Defects in the cell cycle are thought to be responsible for certain tumor cells resisting chemotherapy or radiation, so a virus that can induce apoptosis despite defects in the cell cycle is useful for cancer treatment.
In short, the electrons of the atoms in the atomizer can be promoted to higher orbitals ( excited state ) for a short period of time ( nanoseconds ) by absorbing a defined quantity of energy ( radiation of a given wavelength ).
The radiation intensity emitted by these lamps is decreasing significantly with increasing wavelength, so that they can be only used in the wavelength range between 190 and about 320 nm.
This way any ( unmodulated ) radiation emitted for example by the atomizer can be excluded, which is imperative for LS AAS.
All these phenomena, molecular absorption and radiation scattering, can result in artificially high absorption and an improperly high ( erroneous ) calculation for the concentration or mass of the analyte in the sample.
The advantage of this technique is that only one radiation source is used ; among the disadvantages are that the high-current pulses reduce lamp lifetime, and that the technique can only be used for relatively volatile elements, as only those exhibit sufficient self-reversal to avoid dramatic loss of sensitivity.
Because individuals with albinism have skin that entirely lacks the dark pigment melanin, which helps protect the skin from the sun's ultraviolet radiation, their skin can burn more easily from overexposure.
Despite its invisible interior, the presence of a black hole can be inferred through its interaction with other matter and with light and other electromagnetic radiation.
CRTs can emit a small amount of X-ray radiation as a result of the electron beam's bombardment of the shadow mask / aperture grille and phosphors.
When exposed to sunlight, artificial light, or infrared radiation ( even the heat of a hand nearby can be enough ), the vanes turn with no apparent motive power, the dark sides retreating from the radiation source and the light sides advancing.
At these very high vacuums the effect of photon radiation pressure on the vanes can be observed in very sensitive apparatus ( see Nichols radiometer ) but this is insufficient to cause rotation.
A Crookes radiometer, consistent with the word-element " meter " in its title, can provide a quantitative measurement of electromagnetic radiation intensity.
Earth creatures ( such as animals, plants and even humans ) exposed to Tiberium can either be killed because of the radiation or be transformed into Tiberium-based life-forms, to whom Tiberium radiation is curative rather than toxic.
Employing shorter wavelengths implied abandoning microscopy and true imaging, however, because there exists no material from which a lens capable of focusing this type of radiation can be created.
The process can also be used to detect radiation that initiates the process, as the passage of a single particles can amplified to large discharges.
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