What's the difference between difference and phosphorescence?

Difference


Definition:

  • (n.) The act of differing; the state or measure of being different or unlike; distinction; dissimilarity; unlikeness; variation; as, a difference of quality in paper; a difference in degrees of heat, or of light; what is the difference between the innocent and the guilty?
  • (n.) Disagreement in opinion; dissension; controversy; quarrel; hence, cause of dissension; matter in controversy.
  • (n.) That by which one thing differs from another; that which distinguishes or causes to differ; mark of distinction; characteristic quality; specific attribute.
  • (n.) Choice; preference.
  • (n.) An addition to a coat of arms to distinguish the bearings of two persons, which would otherwise be the same. See Augmentation, and Marks of cadency, under Cadency.
  • (n.) The quality or attribute which is added to those of the genus to constitute a species; a differentia.
  • (n.) The quantity by which one quantity differs from another, or the remainder left after subtracting the one from the other.
  • (v. t.) To cause to differ; to make different; to mark as different; to distinguish.

Example Sentences:

  • (1) All transplants were performed using standard techniques, the operation for the two groups differing only as described above.
  • (2) This study was undertaken to determine whether the survival of Hispanic patients with squamous cell carcinoma of the head and neck was different from that of Anglo-American patients.
  • (3) Patients with papillary carcinoma with a good cell-mediated immune response occurred with much lower infiltration of the tumor boundary with lymphocyte whereas the follicular carcinoma less cell-mediated immunity was associated with dense lymphocytic infiltration, suggesting the biological relevance of lymphocytic infiltration may be different for the two histologic variants.
  • (4) Spectral analysis of spontaneous heart rate fluctuations, a powerful noninvasive tool for quantifying autonomic nervous system activity, was assessed in Xenopus Laevis, intact or spinalized, at different temperatures and by use of pharmacological tools.
  • (5) Age difference did not affect the mean dose-effect response.
  • (6) The prenatal risk determined by smoking pregnant woman was studied by a fetal electrocardiogram at different gestational ages.
  • (7) Although the mean values for all hemodynamic variables between the two placebo periods were minimally changed, the differences in individual patients were striking.
  • (8) Phospholipid methylation in human EGMs is distinctly different from that in rat EGMs (Hirata and Axelrod 1980) in that the human activity is not Mg++-dependent, and apparent methyltransferase I activity is located in the external membrane surface.
  • (9) The high amino acid levels in the cells suggest that these cells act as inter-organ transporters and reservoirs of amino acids, they have a different role in their handling and metabolism from those of mammals.
  • (10) The outward currents are sensitive to TEA and their reversal potentials differ.
  • (11) During control, no significant difference between systolic fluctuation (delta Pa) and pleural swings (delta Ppl) was found.
  • (12) This difference was not due to ATPase activity in the assay.
  • (13) No differences between the two substances were observed with respect to side effects and general tolerability.
  • (14) Five probes of high specificity to individual chromosomes (chromosomes 3, 11, 17, 18 and X) were hybridized in situ to metaphase chromosomes of different individuals.
  • (15) The cross sectional area of the aortic lumen was gradually decreased while the length of the stenotic lesion gradually increased by using strips with different width.
  • (16) For male schizophrenics, all symptom differences disappeared except one; blacks were more frequently asocial.
  • (17) Between 22 HLA-identical siblings and 16 two-haplotype different siblings, a significant difference in concordance of reactions for the B-cell groups was noted.
  • (18) It would be fascinating to see if greater local government involvement in running the NHS in places such as Manchester leads over the longer term to a noticeable difference in the financial outlook.
  • (19) Snooker, which became and remains a fixture in the BBC2 schedules, was chosen for showing because it is the sport in which different shades are most significant.
  • (20) Would people feel differently about it if, for instance, it happened on Boxing Day or Christmas Eve?

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.