Transport properties of fission product vapors

Kinetic theory of gases is used to calculate the transport properties of fission product vapors in a steam and hydrogen environment. Provided in tabular form is diffusivity of steam and hydrogen, viscosity and thermal conductivity of the gaseous mixture, and diffusivity of cesium iodide, cesium hydroxide, diatomic tellurium and tellurium dioxide. These transport properties are required in determining the thermal-hydraulics of and fission product transport in light water reactors

Radiation properties of coal combustion products

An assessment is made of the experimental data and the theoretical bases for determining the absorption and scattering coefficients of the coal products of combustion. Particular attention is devoted to the complex refractive indices for char and ash. A dispersion relation is developed from sparse extinction data that can be used to estimate the optical constants of char. Considerable uncertainty and scatter is found in the literature data on ash optical constants and is attributed to variability in ash composition, lack of experimental rigor and limitations in the data reduction procedures. A correlation is presented for estimating the complex refractive indices of ash as a function of its mineral composition. A parametric study is conducted to elucidate the role of char, soot and ash particulates in determining the radiation properties of coal flames. The effects of combustion particulates are discussed in terms of the modification of the band structure of gas radiation to a luminous spectrum, introduction of scattering in radiation transport, particle size distribution, particle loading and particle composition. The results are interpreted as possible effects of coal beneficiation, coal micronization and flyash composition on heat transfer to the water walls of a coal furnace. 19 refs., 13 figs., 10 tabs

Assessment of ceramic membrane filters

The objectives of this project include the development of analytical models for evaluating the fluid mechanics of membrane coated, dead-end ceramic filters, and to determine the effects of thermal and thermo-chemical aging on the material properties of emerging ceramic hot gas filters. A honeycomb cordierite monolith with a thin ceramic coating and a rigid candle filter were evaluated

Veraenderlichkeit der Coccolithophoridenflora des Europaeischen Nordmeeres im Jungquartaer

Available from TIB Hannover: RO 4719(22) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Decreased theta oscillation during visual oddball task in patients with restless legs syndrome

Objectives: Restless legs syndrome (RLS) is a sensorimotor neurological disorder, in which the primary symptom is a compelling urge to move the legs. It is reported that RLS patients show cognitive deficits. It has been proposed that cognitive process is accompanied by theta oscillation. Thus, we hypothesized that theta oscillation should be decreased in patients with RLS compared with healthy controls.OAIID:oai:osos.snu.ac.kr:snu2010-01/104/2014017262/15SEQ:15PERF_CD:SNU2010-01EVAL_ITEM_CD:104USER_ID:2014017262ADJUST_YN:NEMP_ID:A079623DEPT_CD:801CITE_RATE:0DEPT_NM:의학과CONFIRM: