- 関
- turbulence、turbulent、turbulent diffusion、turbulent flow
WordNet
- unstable flow of a liquid or gas (同)turbulency
- a state of violent disturbance and disorder (as in politics or social conditions generally); "the industrial revolution was a period of great turbulence" (同)upheaval, Sturm und Drang
- instability in the atmosphere
- (physics) the process in which there is movement of a substance from an area of high concentration of that substance to an area of lower concentration
- the spread of social institutions (and myths and skills) from one society to another
- flow in a circular current, of liquids (同)purl, whirlpool, swirl, whirl
- a miniature whirlpool or whirlwind resulting when the current of a fluid doubles back on itself (同)twist
- founder of Christian Science in 1866 (1821-1910) (同)Mary Baker Eddy, Mary Morse Baker Eddy
PrepTutorEJDIC
- 荒れ狂うこと,激動,混乱;動乱,騒動 / 乱気流
- 荒れ狂う,混乱した / 不穏な,騒がしい,動乱の
- 放散,発散,拡散[作用] / 普及,流布 / (文体などの)散漫,冗漫
- うず,(風・霧・煙などの)渦巻き / 渦を巻く
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2017/01/23 16:58:38」(JST)
[Wiki en表示]
Eddy diffusion, eddy dispersion, multipath, or turbulent diffusion is any diffusion process by which substances are mixed in the atmosphere or in any fluid system due to eddy motion.[1][2] In another definition[3] it is mixing that is caused by eddies that can vary in size from the small Kolmogorov microscales to subtropical gyres.
Because the microscopic processes responsible for atmospheric mixing are too complex to model in detail, atmospheric modelers generally treat atmospheric mixing as a macroscopic "eddy" diffusion process. In this approach, the diffusion rate at each pressure level is parameterized by a quantity known as the eddy diffusion coefficient, K[4] (also sometimes called eddy diffusivity, with units of m2 s−1).
References
- ^ IUPAC Compendium of Chemical Terminology 2nd Edition (1997) Gold Book Link
- ^ Science world, wolframe
- ^ Glossary of Meteorology Link
- ^ Chamberlain and Hunten 1987, pp. 75 and 90
UpToDate Contents
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- 1. 低酸素血症の酸素供給およびメカニズムoxygenation and mechanisms of hypoxemia [show details]
…disease. In such diseases, diffusion limitation usually coexists with V/Q mismatch, which makes the relative contribution of each to the patient hypoxemia uncertain. Diffusion limitation is characterized …
- 2. 抗菌薬感受性試験の概要overview of antibacterial susceptibility testing [show details]
…. The disk diffusion method is considered to be a reference method for many organism-antimicrobial combinations. In addition to its low cost and simplicity, an advantage of disk diffusion is the flexibility …
- 3. 小児における肺機能検査の概要overview of pulmonary function testing in children [show details]
…Airway obstruction; Restrictive lung, chest wall, and respiratory muscle defects; Diffusion defects (those that impair diffusion of gas through the alveolar-capillary membrane) Respiratory muscle weakness; …
- 4. 急性虚血脳卒中の神経画像neuroimaging of acute ischemic stroke [show details]
…use of the apparent diffusion coefficient (ADC). The ADC provides a quantitative measure of the water diffusion. In acute ischemic stroke with cytotoxic edema, decreased water diffusion in infarcted tissue …
- 5. 新生児におけるチアノーゼの概要overview of cyanosis in the newborn [show details]
…of the lung). Diffusion impairment – Oxygen molecules must diffuse from the alveoli to the pulmonary capillaries to oxygenate hemoglobin. Interference with alveolar-arterial diffusion (eg, pulmonary edema) …
English Journal
- Modeling long-term uptake and re-volatilization of semi-volatile organic compounds (SVOCs) across the soil-atmosphere interface.
- Bao Z1, Haberer C2, Maier U3, Beckingham B4, Amos RT5, Grathwohl P2.
- The Science of the total environment.Sci Total Environ.2015 Dec 15;538:789-801. doi: 10.1016/j.scitotenv.2015.08.104. Epub 2015 Sep 1.
- Soil-atmosphere exchange is important for the environmental fate and atmospheric transport of many semi-volatile organic compounds (SVOCs). This study focuses on modeling the vapor phase exchange of semi-volatile hydrophobic organic pollutants between soil and the atmosphere using the multicomponent
- PMID 26340582
- Evaluation of the Kinetic Performance Differences between Hydrophilic-Interaction Liquid Chromatography and Reversed-Phase Liquid Chromatography under Conditions of Identical Packing Structure.
- Song H1, Desmet G2, Cabooter D1.
- Analytical chemistry.Anal Chem.2015 Dec 4. [Epub ahead of print]
- A protocol using trifluoroacetic acid at a temperature of 60 °C is developed for the adequate removal of the stationary phase of reversed-phase liquid chromatography (RPLC) columns. This procedure allows for studying the same column first under RPLC and subsequently under hydrophilic-interaction li
- PMID 26595107
- Realistic simulation of artefacts in diffusion MRI for validating post-processing correction techniques.
- Graham MS1, Drobnjak I2, Zhang H2.
- NeuroImage.Neuroimage.2015 Nov 7. pii: S1053-8119(15)01028-9. doi: 10.1016/j.neuroimage.2015.11.006. [Epub ahead of print]
- In this paper we demonstrate a simulation framework that enables the direct and quantitative comparison of post-processing methods for diffusion weighted magnetic resonance (DW-MR) images. DW-MR datasets are employed in a range of techniques that enable estimates of local microstructure and global c
- PMID 26549300
Japanese Journal
- D-16-14 拡散強調MRIシミュレータを用いた渦電流磁場による拡散係数計測誤差の低減(D-16.医用画像,一般セッション)
- 渦電流磁場を考慮した拡散強調MRI用高速画像シミュレータ
- セルオートマトン法による合金凝固時の溶質再分配に及ぼす流動の影響の解析
Related Links
- The observation that the male follows the trail precisely in three-dimensional space, indicating no change in odor structure, further confirms that eddy diffusion is minimal at these short ([less than]10 s), small ([less than]10 cm) scales.
- A key factor to consider when examining eddy diffusion is to ask whether the difference in length between the shortest and longest path depends at all on the diameter of the particles. If it is, we could then ask which particles ...
- Eddy diffusion itself relates to the fact that an analyte molecule, within a ‘band’ of analytes, can take one of many ‘paths’ through the column. These multiple paths arise due to inhomogeneities in column packing and small ...
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