| Radioactivity is the process of emission of radiation as a radioactive material changes form, often to a different element. |
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| Capturing neutrons causes the boron nuclei to break apart, resulting in the emission of alpha radiation and lithium nuclei. |
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| It is unstable, and scientists know that it radioactively decays by electron emission to Nitrogen 14, with a half life of 5730 years. |
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| Low emission coatings are applied to the inside surface which reduce heat loss through the glass. |
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| The authors used emission spectroscopy, laser flash photolysis and pulse radiolysis to measure a series of photophysical parameters of curcumin. |
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| Their photobleaching behavior was studied using spectrally resolved emission spectroscopy. |
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| Alloyed thorium enhances the emission of thermions by lowering the work function barriers. |
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| During 325 nm irradiation, anthranilic acid is rapidly and irreversibly bleached, while NADH emission undergoes only modest reduction. |
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| There was also lindane, and three times the average level of xylene, a car exhaust emission. |
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| Correction of excitation and emission spectra was performed using a Rhodamine B quantum counter solution and a standard lamp, respectively. |
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| This is a partial list of radionuclides that decay by positron emission and have been used in biomedical imaging studies. |
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| More recent and dramatic evidence has come largely through functional magnetic resonance imaging and positron emission tomography. |
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| He warned the emission levels were on average in excess of 100 micrograms per cubic metre. |
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| Following Forster himself, one may use a specific absorption spectrum, a normalized emission spectrum and an estimate of the radiative lifetime. |
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| This process of resonant photon absorption accompanied by electron emission forms a resonant Auger effect or resonant Auger Raman scattering. |
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| To avoid these troubles, the substrate must be tested for alkalinity, water vapor and moisture emission. |
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| Because of small body movements or maybe sudden changes in luminosity, some of the recorded emission spectra showed artifacts. |
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| The time-resolved emission features of GBM were found to be distinct from those of the normal brain tissues, white matter and cortex. |
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| Made up of small numbers of gold or silver atoms, the nanoclusters are strongly fluorescent and have narrow excitation and emission spectra. |
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| Peters says emission trading deals have to be above-board and transparent, especially when it comes to price. |
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| This led us to shift the excitation to a lower wavelength to minimize the contribution from Rayleigh scattering in the emission spectra. |
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| The isotropic emission spectra were normalized to the corresponding absorbance at the excitation wavelength. |
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| Fluorescence excitation and emission spectra at room temperature and at 77 K are presented. |
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| The word laser is an acronym for light amplification by stimulated emission of radiation. |
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| The solution was scaled so as to normalize the peaks in excitation and emission spectra to unity. |
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| He discovered the Schottky effect, an irregularity in the emission of thermions in a vacuum tube and invented the screen-grid tetrode tube. |
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| It is consistent with emission from different rotamers of the cyanine dyes formed immediately after excitation. |
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| First, the emission spectrum of the donor molecule must overlap with the absorbance spectrum of the acceptor. |
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| The excitation wavelength was 309 nm and the emission was monitored at 371 nm with a slit setting of 0.59 mm corresponding to a 2.5-nm spectral bandpass. |
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| It is now widely accepted that CO2 emission is a kind of pollution. |
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| Stimulated emission with a beam that is red-shifted with respect to the excitation wavelength can quench the fluorescence of the excited molecules. |
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| Pyrene-labeled lipids were excited at 344 nm, and monomer and excimer emission intensities were detected at 398 and 480 nm, respectively, with bandpasses of 4.0 nm. |
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| The downward radiance measured by the infrared interferometer is a combination of thermal emission by atmospheric water vapor and by the cloud ice mass. |
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| Dumyahn and First measured the three-dimensional emission profile of various types of single lamps by taking radiometric measurements at various points in space. |
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| Excitation and emission slits with a nominal bandpass of 5 nm were used. |
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| Life cycle emission reductions are directly related to battery capacity and increasing battery capacity to combat range anxiety effectively eliminates the GHG benefit. |
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| In the case of the model compound of tyrosine NAYA, a small bathochromic shift of 2 nm in the emission spectrum from dioxane to water was observed. |
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| The thorium dispersion enhances thermionic electron emission, which in turn improves the starting characteristics of gas tungsten arc welding electrodes. |
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| The engine meets EU emission requirements without secondary air injection or exhaust gas recirculation, thanks to its base design and engine computer. |
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| Critics countered that expanded testing efforts are crucial and that fewer air-polluting scofflaws will be busted if emission levels are measured less frequently. |
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| The system is supposed to force companies that exceed their national emission allocations to buy extra allowances from more efficient companies or face fines. |
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| When your late-model car's oxygen sensor goes on the fritz, it will impair operation of the catalytic converter and probably cause your car to flunk its next emission test. |
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| The DEP has authority only over manufacturing or emission sites, not mere storage sites, as this one is. |
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| If affordable, car owners should have their own officially licensed emission test devices to ensure against possible police accusations of unsatisfactory results. |
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| New emission limits will be imposed on the company when recycled liquid fuel is used and purpose-built secure on-site storage tanks will be used to store the fuel. |
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| Steady-state fluorescence was measured with a SPEX spectrofluorometer with excitation and emission slits providing a bandpass of 7.2 and 3.6 nm, respectively. |
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| The joint-announcement should also put to bed long-term disagreements between Beijing and Washington over emission targets. |
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| For that reason, the emission of red fluorescence on excitation of cancerous tissue by blue light increases more than the emission of green fluorescence. |
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| There is no difference in emission limits between rich burn and lean burn engines. |
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| The new emission standards have produced a measurable diminution in air pollution. |
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| The second problem was that the planetary model could not explain the highly peaked emission and absorption spectra of atoms that were observed. |
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| The outer glass is a safety precaution, reducing UV emission and because halogen bulbs can occasionally explode during operation. |
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| Its main transmission antennae are located in Italian territory, and exceed Italian environmental protection levels of emission. |
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| According to quantum field theory in curved spacetime, a single emission of Hawking radiation involves two mutually entangled particles. |
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| Study of the problem of bulb blackening led to the discovery of the Edison effect, thermionic emission and invention of the vacuum tube. |
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| Shell joined the Global Climate Coalition of businesses opposed to greenhouse gas emission regulation. |
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| Although alpha, beta, and gamma radiations were most commonly found, other types of emission were eventually discovered. |
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| The unstable nucleus is more stable following the emission, but will sometimes undergo further decay. |
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| The beta decay from 137Cs to 137mBa is a strong emission of gamma radiation. |
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| The emission rate for cars using highways has been on a decline between 1975 and 1995 due to regulations and the introduction of unleaded petrol. |
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| They have adapted to change their pulse emission frequency in relation to their flight speed so echoes still return in the optimal hearing range. |
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| Several studies suggested that the emission of USVs by male rats induces paracopulatory behavior in females. |
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| Radiational cooling occurs due to the emission of infrared radiation, either by the air or by the surface underneath. |
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| Incineration has a number of outputs such as the ash and the emission to the atmosphere of flue gas. |
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| For vehicles registered on or after 1 March 2001 charges are based on theoretical CO2 emission rates per kilometre. |
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| Productivity on the farm itself and the use of machinery is another source of the carbon emission. |
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| Radiography, Computed tomography, Positron emission tomography and Medical ultrasonography are important diagnostic tools developed in the West. |
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| This leads to a spectral shift as emission light is postfiltered by excitation of the fluorophore. |
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| Each emission line associated with the quadexciton cascade shows doublet structure in the polarization-resolved photoluminescence experiment. |
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| Air quality laws govern the emission of air pollutants into the atmosphere. |
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| The Red Rectangle is only one example of an infrared object that is detectable in the infrared because of grain emission. |
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| Placed on a building, this giant poster can absorb the toxic emission from around 20 cars each day. |
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| Tosol was the day Opportunity shook the miniature thermal emission spectrometer in an effort to remove dust from one of its mirrors. |
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| The partnership with Alpha Science will complement our alpha particles test offering with packaging alpha emission measurement. |
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| Excimer emission and energy transfer in cofacial boradia-zaindacence dimmers built on a xanthene scaffold. |
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| Ehlert, The application of a soft x-ray spectrometer to study the oxygen and fluorine emission lines from oxides and fluorites, Adv. |
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| This leads to the non-formed emission of anticoagulative compounds from the vascular walls and tissues which are also quickly neutralized. |
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| Positron emission tomography requires the patient to ingest a radioactive tracer that lands in cells, especially cancer cells. |
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| Inhibition of dopamine release via 5HT2A receptor agonism has been supported by radioreceptor labeling and positron emission tomography scans. |
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| This radio telescope will be used to study the Sun's radio wave emission that may be produced by solar activity. |
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| Kawasaki is also upgrading its L20A gas turbon line-up, with low 150kW-20MW emission technology. |
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| The broad-band emission represents the collision of positrons with nearby, warm electrons that have a wide range of kinetic energies. |
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| In addition to regulatory and permitting issues, sources should reevaluate their compliance status based on new emission factors. |
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| Evaluating current extrusion lamination products through an LCI analysis makes it possible to measure both energy consumption and CO2 emission. |
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| The ozone hole is attributed to the emission of chlorofluorocarbons or CFCs into the atmosphere, which decompose the ozone into other gases. |
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| A third type is gamma emission, in which the atom gives off a highly energetic photon along with the alpha or beta particle. |
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| The nature of traps and emission centres in thermoluminescent rock materials. |
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| I used the Be star Gamma Cassiopeiae, which has strong H-alpha emission, to focus on the H-alpha spectral line. |
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| Skin hypericin content is determined through fluorescence emission with a fiber optic attachment to a spectrofluorimeter. |
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| The emission spectra were measured using a custom-made calibrated spectrofluorimeter described previously. |
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| Chemical analysis was performed using inductively coupled plasma emission spectrophotometry. |
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| Furthermore, UCNPs are doped with lanthanide ions that provide the favorable properties of stable emission, discrete emission bands and long emission lifetime. |
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| The model predictions that included oil behavior, advection, and wind drift helped link the measured organic aerosols to their source and mechanism of emission. |
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| Pushed by Oregon, California and a dozen other states, the federal government set tough new national tailpipe emission standards Thursday for passenger cars and trucks. |
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| The amplitude images are highly detailed and exhibit variations in acoustic emission from both calcified and uncalcified regions of the diseased artery. |
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| The patient was examined using a positron emission tomographic system. |
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| When the desire to urinate manifests itself chiefly at night, with burning pains when urinating, or emission, drop by drop, of sanguinolent urine. |
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| Consequently, operators of ranges might consider adding sound transmission barriers, absorptive materials, and natural vegetation to lessen noise emission. |
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| This is because many motorcycles lack a catalytic converter, and the emission standard is much more permissive for motorcycles than for other vehicles. |
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| Line shapes of atomic lines and soft x-ray emission bands measured with a wavelength dispersive spectrometer with the Electron Probe Micro Analyzer are reviewed. |
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| The United States Environmental Protection Agency has published a compilation of air pollutant emission factors for a wide range of industrial sources. |
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| In March 2005, a graduated vehicle excise duty system, with tax bands based on CO2 ratings, was introduced as an incentive to purchase vehicles with lower emission ratings. |
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| Also, today's new car engines are designed to increase fuel economy and improve emission controls, which puts more stress than ever on motor oils. |
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| The greenhouse effect is the process by which absorption and emission of infrared radiation by gases in a planet's atmosphere warm its lower atmosphere and surface. |
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| Isolated proton emission was eventually observed in some elements. |
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| The hazard from contamination is the emission of ionising radiation. |
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| The monoanion and dianion states are both potentially relevant at biological pH. The dianion strongly absorbs photons at 480 nm and gives a strong emission peak at 517 nm. |
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| These projects included industrial plant relocation or closure, furnace replacement, introduction of new emission standards, and more strict traffic control. |
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| It turned out to be in a metalcasting lab, operating an emission spectrogaph, which used 35 mm film to record the density of the spectral lines of the elements. |
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| Fluorescence determinations were performed with a LS55 fluorospectrometer with excitation at 360 nm and emission detection at 430 nm with a 10 nm bandwidth. |
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| The ideal fluorophore is a small, hydrophilic molecule with a long emission wavelength, large Stokes shift, high extinction coefficient, and high quantum efficiency. |
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| In the case of Rho Oph 9, we were unable to reliably disentangle the coreshine emission from background variations and the strong local PAH emission. |
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| Partial multiphase skeletal scintigraphy and single-photon emission CT of the cranium showed increased bone metabolism in the area of the right frontal bone. |
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| Salmond has campaigned on global warming and in government has committed Scotland to legislation on emission reduction and the generation of renewable energy. |
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| This recent and significant increase in ranking and performance is mostly due to remarkable achievements in energy efficiency and reductions in CO2 emission levels. |
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| European emission standards for motorcycles are similar to those for cars. |
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| Moreover, we used the real IR emitter spectral emission obtained from out supplier to approximate the emission of the IR emitter instead of using the blackbody theory. |
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| Effective management and maintenance of SCR catalysts ensures companies meet their performance targets and remain within their NOx emission allowance. |
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| Perhaps the main advance needed to bring these grand notions to fruition is the development of luciferases that stimulate the emission of a redder light. |
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| On the interpretation of the solar ultraviolet emission line spectrum. |
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| Gold plated tungsten wire can be used in applications that require soldering, protection from corrosion, or a reduction in the secondary emission of electrons. |
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