نتایج جستجو برای: flare gas

تعداد نتایج: 253186  

Journal: :Sustainability 2022

Gas flaring is a global problem affecting oil-producing countries. The Nigerian petroleum industry not an exemption. responsible for the emission of greenhouse gas, depletion ozone layer, warming, and climate change. study aims to offer legal panaceas menace gas flaring, which has affected Nigeria’s economy. Many scholars have raised concerns need discontinuance in Nigeria due its adverse effec...

Journal: :Living reviews in solar physics 2008
Arnold O Benz

Solar flares are observed at all wavelengths from decameter radio waves to gamma-rays at 100 MeV. This review focuses on recent observations in EUV, soft and hard X-rays, white light, and radio waves. Space missions such as RHESSI, Yohkoh, TRACE, and SOHO have enlarged widely the observational base. They have revealed a number of surprises: Coronal sources appear before the hard X-ray emission ...

2008
D. W. LONGCOPE S. GUIDONI M. G. LINTON

We present a novel model in which shortening of a magnetic flux tube following localized, three-dimensional reconnection generates strong gas-dynamic shocks around its apex. The shortening releases magnetic energy by progressing away from the reconnection site at the Alfvén speed. This launches inward flows along the field lines whose collision creates a pair of gas-dynamic shocks. The shocks r...

Journal: :Flow Measurement and Instrumentation 2021

Oil and gas production industries use large (diameter > 0.8 m) ultrasonic flow meters (USMs) to measure exhaust from flare stacks, emissions smokestacks, of natural gas, etc. Since most laboratories do not have compressors with sufficient capacity (>10 kg/s) calibrate meters, calibrations are performed using the blow-down method where is generated by discharging high pressure tanks, leading sig...

Journal: :Investigative ophthalmology & visual science 1977
E Bengtsson

Breakdown of the blood aqueous barrier in the rabbit eye induces a protein leakage into the aqueous humor, seen as a flare in the anterior chamber. A barrier damage was induced by topical prostaglandin E2(PGE2), infrared irradiation of the iris, or alpha-melanocyte-stimulating hormone (alpha-MSH) given subcutaneously. The aqueous flare was measured quantitatively by means of a photoelectric ins...

1999
Y. H. Zhang

Mkn 421 was repeatedly observed with BeppoSAX in 1997–1998. We present highlights of the results of the thorough temporal and spectral analysis discussed by Fossati et al. (1999) and Maraschi et al. (1999), focusing on the flare of April 1998, which was simultaneously observed also at TeV energies. The detailed study of the flare in different energy bands reveals a few very important new result...

2010
James Fung Ching-Lung Lai David But Axel Hsu Wai-Kay Seto Charles Cheng Danny Ka-Ho Wong Man-Fung Yuen

Background Measuring liver stiffness is becoming more popular as a non-invasive tool for assessing liver fibrosis. Aim To assess the effect of severe hepatitis B flare on liver stiffness and determine factors that correlate with liver stiffness measurements. Methods Twenty-nine patients with severe hepatitis B flare (ALT [ 10 9 upper limit of normal) were followed up for 1 year. Serial transien...

2000
J. D. Silverman K. A. Eriksen P. J. Green S. H. Saar

We report the serendipitous discovery of a flare star observed with the ROSAT X-ray observatory. From optical spectra, which show strong and variable emission lines of the hydrogen Balmer series and neutral helium, we classify this object as a M3.0Ve star, and estimate a distance of 52 pc from published photometry. Due to the star's close proximity (13.6 ′) to the calibration source and RS CVn ...

Journal: :Clinical orthopaedics and related research 2004
Richard F Scarlett David M Rocke Sharon Kantanie Jean B Patel Eileen M Shore Frederick S Kaplan

Flare-ups of fibrodysplasia ossificans progressiva are most commonly triggered by soft tissue trauma. After observing severe flare-ups of fibrodysplasia ossificans progressiva in two half-sisters with culture-confirmed influenza B infections, we hypothesized that influenza-like viral illnesses also can trigger fibrodysplasia ossificans progressiva flare-ups. To address this hypothesis, we desig...

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