Results 311 to 320 of about 4,306,189 (370)
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Atmospheric transmission: Concepts, symbols, units and nomenclature

Infrared Physics, 1965
Abstract This report discusses concepts, symbols, units and nomenclature for describing the transmission of radiant flux through the earth's (variably density) atmosphere.
R. Clark Jones   +2 more
openaire   +2 more sources

Gas-phase mercury in the atmosphere of the United Kingdom

Atmospheric Environment, 1998
Abstract Measurements of total gaseous mercury have been made over a period of 1 yr using a cold vapour atomic fluorescence absorption technique at Harwell, a rural site in central southern England. The mean concentration was 1.68 ng m−3, with a maximum hourly mean concentration of 20.5 ng m−3 and a minimum hourly mean concentration of 0.26 ng m−3 ...
G. J. Dollard   +2 more
openaire   +2 more sources

Properties of coarse particles in the atmosphere of the United Kingdom

Atmospheric Environment, 2011
Abstract The recent rapid expansion of PM2.5 monitoring alongside PM10 has allowed estimation of concentrations of coarse particles (PM2.5–10) by difference. This has been carried out for sites using comparable measurement techniques for both metrics, and the properties of the hourly average concentration data have been evaluated.
Yan-Ju Liu, Roy M. Harrison
openaire   +2 more sources

A Report on the Calibration of an Atmospheric and Vacuum Distillation Unit

Petroleum Science and Technology, 2013
For a crude oil distillation unit of 5 million tons/year (595.2 t/h), its calibration of heavy load was done in the paper. The yields of atmospheric gas oil and total distillate oil can reach 24.69% and 69.53%, respectively, close to their design values, and comprehensive energy consumption of the unit was 341.38 MJ/t, less than its design value, which
W. Li, J. Liu
openaire   +2 more sources

Features of the ward atmosphere in a psychiatric day care unit based on occupational therapy. A comparative study

, 1995
As part of a process-outcome study the specific occupational therapy features of the ward atmosphere in a psychiatric day care unit were investigated.
M. Eklund, L. Hansson
semanticscholar   +1 more source

Trends in atmospheric reactive nitrogen for the Eastern United States

Environmental Pollution, 2011
Reactive nitrogen can travel far from emission sources and impact sensitive ecosystems. From 2002 to 2006, policy actions have led to decreases in NO(x) emissions from power plants and motor vehicles. In this study, atmospheric chemical transport modeling demonstrates that these emissions reductions have led to a downward trend in ambient measurements ...
Robin L. Dennis   +2 more
openaire   +3 more sources

Variations of atmospheric temperature with altitude in the United States

Electrical Engineering, 1941
It has long been recognized that with increase in altitude the density of air decreases and influences the voltage rating and temperature rise of electrical apparatus. However, different standards for apparatus do not give the same weight to these factors.
openaire   +2 more sources

Problems in automatic control of atmospheric-vacuum units

Chemistry and Technology of Fuels and Oils, 1994
Of all the sections in AVT [atmospheric-vacuum tubestill] units, the distillation towers are the most difficult to control; this is particularly true in units operating to produce lube stocks. In the atmospheric towers, three or four side streams are usually taken as end-products with specified properties; in the vacuum towers, two or three sides ...
A. P. Verevkin, Yu. M. Munirov
openaire   +2 more sources

Optimal Taxes on Fossil Fuel in General Equilibrium

, 2011
We analyze a dynamic stochastic general-equilibrium (DSGE) model with an externality—through climate change—from using fossil energy. Our central result is a simple formula for the marginal externality damage of emissions (or, equivalently, for the ...
M. Golosov   +3 more
semanticscholar   +1 more source

Impact of natural aerosols on atmospheric radiation and consequent feedbacks with the meteorological and photochemical state of the atmosphere

, 2014
This paper addresses the aerosol effects on radiation and the feedback on meteorology and photochemical activity, applying the online model RAMS/ICLAMS. The model treats meteorology and chemical pollutants on an interactive way. Cloud condensation nuclei
J. Kushta   +6 more
semanticscholar   +1 more source

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