(n.) The act of sending or throwing out; the act of sending forth or putting into circulation; issue; as, the emission of light from the sun; the emission of heat from a fire; the emission of bank notes.
(n.) That which is sent out, issued, or put in circulation at one time; issue; as, the emission was mostly blood.
Example Sentences:
(1) The assembly reaction is accompanied by characteristic changes in fluorescence emission and dichroic absorption.
(2) In London, diesel emissions are now so bad that on several days earlier this summer, children, older people and vulnerable adults were warned not to venture outside .
(3) "It has done so much to educate people about low emissions cars.
(4) Large emission intensity fluctuations are observed from analyte species in inductively coupled plasmas.
(5) They argue that the US, the world's largest producer of greenhouse gases per capita (China recently surpassed us in sheer volume), needs to lead the fight to limit carbon emissions, rather continuing to block global treaties as it has done in the past.
(6) The spatial resolution of a NaI(T1), 25 mm thick bar detector designed for use in positron emission tomography has been studied.
(7) The optical efficiencies are similar and depend on the match of the excitation characteristics of the stain with the emission spectra of the light source.
(8) At our current rate, which is 10 gigatons of carbon a year, we have 27 years left, after which time carbon emissions would need to cease.
(9) The behavior and effects of atmospheric emissions in soils and plants are discussed.
(10) Several images of cerebral blood flow were recorded during inhalation of carbon-15-labelled carbon dioxide by positron emission tomography in four patients with essential tremor and four normal controls.
(11) The statistics underline the significant strides being taken by the industry to meet a government drive to reduce Britain's carbon emissions, although the scale of renewable energy subsidies remains controversial.
(12) The present analysis concentrates on the utilization of low-energy proton accelerators of several hundred kilovolts for particle-induced X-ray emission microanalysis.
(13) A fortnight ago the two countries signed a US$27 million deal to tackle deforestation on the island of Sumatra - a key problem in Indonesia where 80 per cent of emissions come from deforestation, both by legal and illegal loggers.
(14) The agreement, hailed as a "landmark" deal and a breakthrough by politicians and the green lobby alike, came before a crucial EU summit opening in Brussels tomorrow at which 27 prime ministers and presidents are supposed to finalise an ambitious package to cut greenhouse gas emissions by 20% by 2020.
(15) Fluorescence (excitation 360 nm, emission 454 nm) generation in glycated albumin was investigated.
(16) Results obtained from a such study are here compared with levels obtained from a comparative determination of the metals in the mosses by three other techniques: Differential pulse anodic stripping voltammetry (DPASV), Direct current plasma (atomic emission) spectroscopy (DCPS) and X-ray fluorescence (XRF) spectroscopy.
(17) Speaking at The Carbon Show in London today, Philippe Chauvancy, director at climate exchange BlueNext, said that the announcement last week that it is to develop China's first standard for voluntary emission reduction projects alongside the government-backed China Beijing Environmental Exchange, could lay the foundations for a voluntary cap-and-trade scheme.
(18) 94 subjects, 64 with cerebral ischemia of varying severity and outcome, and 30 controls were studied with technetium-99m hexamethyl propylenamino oxime single photon emission computed tomography in order to evaluate the suitability of this technique in the assessment of cerebral ischemia.
(19) Pyridinoline was isolated from the cross-linked peptide by preparative amino acid analysis and reversed-phase HPLC and identified by its ultraviolet absorption spectra, its fluorescence excitation and emission spectra and, for the first time, its time-of-flight secondary ion-mass spectrum.
(20) In the US, electricity accounts for 39% of emissions – and 75% of that is contributed by coal.
Phosphorescence
Definition:
(n.) The quality or state of being phosphorescent; or the act of phosphorescing.
(n.) A phosphoric light.
Example Sentences:
(1) Fluorescence and phosphorescence spectra and lifetime studies revealed that at least 75% of the porphyrins were bound to metal, probably Zn, while the rest was free.
(2) The inactivation of equine liver alcohol dehydrogenase by guanidine hydrochloride and urea has been studied by monitoring the intrinsic tryptophan fluorescence and phosphorescence emission.
(3) The constancy of the lifetime-normalized phosphorescence yield with apoazurin and with Trp-314 in alcohol dehydrogenase establishes that the intersystem crossing quantum yield is practically unaffected across the temperature range.
(4) The quantum yields for singlet oxygen formation via energy transfer from triplet alpha-terthienyl have been obtained from time-resolved measurements of its IR phosphorescence: these yields are in the 0.6-0.8 range in non-polar and polar (hydroxylic and non-hydroxylic) solvents.
(5) When pouring liquid nitrogen over the spots, a very intense bluish-white fluorescence followed by a long-lasting greenish phosphorescence is observed.
(6) Triphenylene was also extemporaneously determined by its phosphorescence spectrum at low temperature.
(7) 1O2 phosphorescence emission was enhanced in deuterated buffer and upon saturation of the sample with oxygen and could be quenched by the addition of sodium azide to the external medium.
(8) High-quality phosphorescence decay curves with a 10-microseconds time resolution were obtained at concentrations of the eosin probe down to 20 nM and in aqueous media at temperatures of 4-38 degrees C. A strong temperature dependence in the rotational behavior was observed for the band 3 anion transport protein, but the lectin receptors of the Friend erythroleukemia cells were found to be immobile on the time scale of 1-4000 microseconds at either 4 degrees C or 37 degrees C. The technique is applicable to other triplet probes and membrane components of living cells under conditions that do not destroy viability.
(9) Quantum yields, fluorescence decay times and phosphorescence of Yt base have been also determined.
(10) Samples of Precambrian rocks (1.7-2.6 billion years, U.S.S.R.) contain metalloporphyrins and linear tetrapyrrole pigment similar to phycobilin 655 from modern blue-green algae Microystis (according to data of phosphorescence spectroscopy).
(11) Barring major enzyme conformational changes in the vicinity of unmodified tryptophan residues when Trp-62 or Trp-108 are selectively modified, we find that Trp-108 dominates both the phosphorescence and the ODMR signals in native lysozyme.
(12) The second-order rate constants, k delta, for quenching of molecular singlet oxygen O2 (1 delta g) by nonsteroidal anti-inflammatory imidazole drugs have been determined using time-resolved phosphorescence detection of singlet oxygen.
(13) Images of the phosphorescence were collected using a series of different delay times after illumination with a light flash (less than 5-microseconds width at half-height), and the phosphorescence decay constants (lifetimes) and oxygen pressure were calculated for each pixel of the image arrays.
(14) Upon irradiation, a solution of porphyrins containing more than 0.1% HSA shows phosphorescence with a lifetime longer than 1 ms. With an increase in irradiation time, phosphorescence intensities and lifetimes of porphyrins increase, depending upon their concentrations and triplet lifetimes, and approach saturated values close to those under deaerated conditions.
(15) Changes in conformation of glutamate dehydrogenase from beef liver as a result of interactions with allosteric effectors have been demonstrated from the phosphorescence emission of tryptophan.
(16) In addition, at 77 K and 275 nm 4-fluorotryptophan displayed strong fluorescence and phosphorescence, with emission quantum yields comparable with those of tryptophan at 77 K and 275 nm.
(17) The phosphorescence spectra and phosphorescence excitation spectra as well as the ratio of fluorescence and phosphorescence yields and the triplet state lifetume have been measured.
(18) Its phosphorescence decay fits well to two exponential components of 1.02 and 0.12 s, with no contribution from long-lived Trp residues.
(19) The mammalian heterogeneous ribonucleoprotein (hnRNP) A1 and its constituent N-terminal domain, termed UP1, have been studied by steady-state and dynamic fluorimetry, as well as phosphorescence and optically detected magnetic resonance (ODMR) spectroscopy at cryogenic temperatures.
(20) The phosphorescence 0,0 band as well as the zero-field splittings of Trp-134 undergoes significant changes upon binding of oleic acid to BSA.