Results 61 to 70 of about 503,535 (164)

Silicon on sapphire for ion implantation studies [PDF]

open access: yes, 1974
Van der Pauw or bridge samples are ultrasonically cut from silicon on sapphire wafers. Contact pad regions are implanted with moderately heavy dose of ions.
Pisciotta, B. P.
core   +1 more source

The Relationship between Nitrogen Dioxide Concentrations in the Atmosphere Measured by the Sodium Arsenite Method and the Chemiluminescence Method [PDF]

open access: yesSuan Sunandha Rajabhat University Journal of Science and Technology, 2015
The relationship between the nitrogen dioxide concentration measured by the Sodium Arsenite method and the Chemiluminescence method, aimed at developing a device for measuring nitrogen dioxide in the atmosphere by means of the Sodium Arsenite method ...
Sivapan Choo-in, Rajeev K. Mishra
doaj  

SAGE 1 data user's guide [PDF]

open access: yes
A guide for using the data products from the Stratospheric Aerosol and Gas Experiment 1 (SAGE 1) for scientific investigations of stratospheric chemistry related to aerosol, ozone, nitrogen dioxide, dynamics, and climate change is presented.
Chu, William P.   +2 more
core   +1 more source

Reducing Emissions from the Electricity Sector: The Costs and Benefits Nationwide and for the Empire State [PDF]

open access: yes
CAIR, Clean Air Interstate Rule, Clean Air Mercury Rule, CAMR, multipollutant regulation, particulates, multi-pollutant regulation, ozone, air quality regulation, emissions, mercury, sulfur dioxide, nitrogen oxides, SO2, NOx, electricity, air ...
Burtraw, Dallas   +2 more
core  

Seasonal variation of air pollution in Warsaw conurbation

open access: yesMeteorologische Zeitschrift, 2014
Long term research shows many substances in the atmosphere are in concentration dangerous for human health and welfare and even for human life. The work presents time and spatial variation of tropospheric ozone and nitrogen dioxide concentrations ...
Katarzyna Rozbicka   +2 more
doaj   +1 more source

Comparative simulation research on the stress characteristics of supercritical carbon dioxide jets, nitrogen jets and water jets

open access: yesEngineering Applications of Computational Fluid Mechanics, 2017
In previous studies it has been shown that supercritical carbon dioxide (SC-CO2) jets are more efficient at rock breaking than water jets, but the corresponding systematic mechanism explanations were not available.
Mukun Li   +3 more
doaj   +1 more source

Visible and near-ultraviolet spectroscopy at Thule AFB (76.5 N) from January 28 - February 15, 1988 [PDF]

open access: yes
Near-ultraviolet and visible spectrographs identical to those employed at McMurdo Station, Antarctica (77.8 S) during the austral spring seasons of 1986 and 1987 were used to study the stratosphere above Thule, Greenland (76.5 N) during early spring ...
Jakoubek, R. O.   +4 more
core   +1 more source

Ground cloud air quality effects [PDF]

open access: yes, 1980
The effects of the ground cloud associated with launching of a large rocket on air quality are discussed. The ground cloud consists of the exhaust emitted by the rocket during the first 15 to 25 seconds following ignition and liftoff, together with a ...
Brubaker, K. L.
core   +1 more source

As carbon dioxide rises, food quality will decline without careful nitrogen management

open access: yesCalifornia Agriculture, 2009
Rising atmospheric concentrations of carbon dioxide could dramatically influence the performance of crops, but experimental results to date have been highly variable.
A Bloom
doaj   +1 more source

A sensitive spectrophotometric determination of nitrogen dioxide in the working atmosphere

open access: yesBulletin of the Chemical Society of Ethiopia, 2009
In the present investigation, a simple and sensitive spectrophotometric method for the determination of nitrogen dioxide in various environmental samples is described. Nitrogen dioxide in air was fixed as nitrite ion in alkaline sodium arsenite absorbing
Prachi Parmar   +2 more
doaj  

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