نتایج جستجو برای: gas meter

تعداد نتایج: 270407  

2003
A. Beelen C. Henkel X. Fan Michael A. Strauss K. M. Menten

We report the detection of high excitation CO emission from the most distant quasar currently known, SDSS J114816.64+525150.3 (hereafter J1148+5251), at a redshift z = 6.419. The CO (J =6→5) and (J =7→6) lines were detected using the IRAM Plateau de Bure interferometer, showing a width of ≈ 280 kms. An upper flux limit for the CO (J =1→0) line was obtained from observations with the Effelsberg ...

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2011
N. Sapari S. Mustapha H. Jusoh

Landfill gas, particularly methane is one of the greenhouse gases which contributes to global warming. This paper presents the findings of a study on methane gas production from simulated landfill reactor under saturated conditions. A reactor was constructed to represent a landfill cell of 2.5 m thickness on sandy soil. The reactor was 0.2 m in diameter and 4 m in height. One meter of sand and ...

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2009
G. J. Bendo C. D. Wilson B. E. Warren E. Brinks H. M. Butner P. Chanial D. L. Clements S. Courteau J. Irwin F. P. Israel J. H. Knapen J. Leech H. E. Matthews S. Mühle G. Petitpas S. Serjeant B. K. Tan R. P. J. Tilanus A. Usero M. Vaccari P. van der Werf C. Vlahakis T. Wiegert M. Zhu

We used 3.6, 8.0, 70, 160 μm Spitzer Space Telescope data, James Clerk Maxwell Telescope HARP-B CO J=(3-2) data, National Radio Astronomy Observatory 12 meter telescope CO J=(1-0) data, and Very Large Array HI data to investigate the relations among PAHs, cold (∼ 20 K) dust, molecular gas, and atomic gas within NGC 2403, an SABcd galaxy at a distance of 3.13 Mpc. The dust surface density is mai...

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2016
Imran Sheikh

In order to meet ambitious emission reduction goals in California, greenhouse gas emissions from direct combustion of fossil fuels for residential space and water heating will need to be largely eliminated. If those emission reductions come from fuel switching (natural gas to electricity) then the electricity grid needs to be prepared for the additional load. This paper presents a new method fo...

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Journal: :ERJ. Engineering Research Journal 2020

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Journal: :IEEE Access 2023

The optical fiber probe gas-holdup meter is a new logging tool, which can be used to measure the of oil-gas-water three-phase flow during production logging. In this paper, wavelet transform denoise measured signal probe. For threshold de-noising method, existing hard and soft functions have certain defects. So we propose denoising method with an improved function, use signal-to-noise ratio, ro...

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Journal: :Environmental Science & Technology 2019

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Journal: International Journal of Architectural Engineering and Urban Planning 2014
Dariush Sattarzadeh, Francis Moran, Lida Balian Asl, Mina Gane,

The rapidly growing world energy use has already raised concerns over energy resources and greenhouse gas (GHG) emissions. Since the global contribution from residential buildings towards energy consumption, has steadily increased between 20% and 40% and as large openings have considerable energy and heat loss in dwellings, this paper establishes a coefficient of heat loss and air infiltration ...

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Journal: :The Journal of the Acoustical Society of America 1952

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Journal: :Measurement & Control 2021

A new structure is proposed for a DN25-type ultrasonic gas flow meter with V-shape double sound channel arrangement. The field characteristics are analyzed including velocity curves the four lines, profiles different cross-sections of meter, and streamlines transducer sections. metering flowmeter measured using Venturi nozzle device. When pipeline rate less than 2.26 m/s, pipe installation does...

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