Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 56 for “"Flaring"”.
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Dissipative heating and nonthermal distributions in black hole accretion flaring events
… NIR emission flares about once per day with the flaring state being about an order of magnitude brighter than the non-flaring state. These flares have a flat spectrum that drops off at high frequency much slower than would be expected from thermal emission alone. This thesis describes work to …
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Phasing-Out Gas Flaring In Nigeria: A Critical Assessment of the Regulatory Regime
… is detrimental to the wider atmosphere. The flaring of gas during oil exploration and production (E & P) activities alarmingly contributes to the emission of green-house gases which contribute to climate change. The enactment of legislation with adequate provisions for the reduction and …
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Corporate environmental accountability in the Nigerian oil and gas industry: the case of gas flaring
… dioxide emission due to associated natural gas flaring is among the major causes of climate change which affects the global environment adversely. Nigeria is rated as the country with second largest volume of associated natural gas being flared the world over. Dominant oil and gas companies …
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Design performance specification for school buildings in the vicinity of gas flaring in the Niger Delta area of Nigeria
… in the Niger Delta area (NDA) where gas flaring (GF) is predominant. This excessive pollution poses the biggest challenge to indoor environments and building deterioration. School buildings in Nigeria currently follow the prescriptive specification and national building codes that were …
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An investigation into the effectiveness of the design and enforcement of Nigeria's anti-gas flaring law and policy regimes, and the considerations of measures that could improve environmental regulatory compliance.
… by the scourge of pollution from associated gas flaring. Associated gas (AG) flaring is widely acknowledged as a significant contributor to greenhouse gas emissions, negatively impacting the environment and economy. Given its adverse effects, governments of oil-producing nations and industries …
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Development of a sustainable framework to manage flare gas in an oil and gas environment: a case study of Nigeria
… a non-desirable product, it is wasted during gas flaring. Globally, about 100 Billion Cubic Meters (BCM) of gas is flared annually, leading to release of about 300 million tons of carbon dioxide yearly into the environment. Russia and Nigeria flare more than other countries to the tune of 35.5 and …
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The Impact of Sunspot Rotation on Solar Flares
… in an in-depth case study of the rotation and flaring properties of the region as it traverses the solar disc. The case study develops analysis techniques, such as introducing sunspot selection criteria, which are used in the following statistical studies. The first statistical study involves …
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Legal framework for utilisation and emissions-impact mitigation from natural gas production: the case for Nigeria.
… the problem of waste of associated gas through flaring emissions, while pipeline leakages and tanker accidents are common during transportation of products and services. During consumption, the combustion of these gases also causes environmental pollution and impact negatively on the health of …
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The radio to x-ray spectral shape and variability of blazars
… reaccelerations of electrons within in a small "flaring" synchrotron component, with subsequent radiative energy loss. In the case of the OVV quasars, however, the variability behaviour at near-infrared wavelengths is not consistent with emission from a single synchrotron component. It is shown …
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Evolution of 3-d magnetic topology in flare-productive active regions
… subject of intense research, many aspects of the flaring process still remain unclear. The objective of this dissertation is to advance the understanding of the physics behind solar flares based on observations, simulations and nonlinear force-free (NLFF) field modeling of magnetic fields. The …
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Greenhouse Gas Mitigation and Management Strategies for Methane Reduction from Waste in Victoria, British Columbia, Canada.
… across waste streams. Methane production, flaring, emissions, oxidation and the decay constant from biosolids placed into the Hartland Landfill was estimated. In order to maintain long-term methane mitigation, a helpful road map for local decision-makers is suggested including rapidly …
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Mass transfer and accretion in the eccentric neutron-star binary Circinus X-1
… along (or shifts of) the horizontal, normal, and flaring branches of the "Z" track in color-color and hardness-intensity diagrams. I found rapid X-ray variability properties associated with each spectral/intensity state: On the horizontal branch, quasi-periodic oscillations (QPOs) in the X-ray …
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A Pilot Study on the Evaluation of Short Term Effects of Jasper Jumper Therapy
… first molar with some advancement and minor flaring of the lower incisor, 4) possible orthopedic and functional effects were demonstrated by tipping of the palatal plane and an increase in the facial depth beyond normal growth increases.</p>
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High resolution studies of complex solar active regions
… Strong photospheric shear flows along the flaring magnetic inversion line exist several hours before the flare. The footpoints of magnetic field lines are sheared by this motion and magnetic free energy is thus stored in the flux system. This energy is then suddenly released during the …
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A Statistical Study of Hard X-Ray Solar Flares
… for the underlying dynamics of the hard x-ray flaring process and a possible separate memory signature for the waiting times. In addition, the stationary and nonstationary characteristics of the waiting times and peak intensities, are revealed. Chapter four provides a concise summary and …
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Control of Volatile Organic Compound (VOC) Air Pollutants
… absorption (or scrubbing), thermal incineration, flaring, catalytic incineration, and biofiltration. Each chapter includes a description of the technology, a discussion of the types of systems available, notes on the design of the system, economic estimates, an explanation of potential problems, …
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High frequency quasi-periodic oscillations in the X-ray radiation of the black hole binary GRS 1915+105
… s, with <> ± asample = 65.44 ± 19.83 s. The flaring fraction , defined by percent of cycle exposure > 1.2*mean count rate, ranges 12.11% < ( < 37.61%, with <> ± asample = 20.05 ± 5.33%. We find a correlation between T and ( which divides the 82 observations into three sub-classes: pi; slow …
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Analysis Of Time Synchronization Errors In High Data Rate Ultrawideban
… systems within the asymptotic region of BER flaring at low BERs in the resultant BER curves. We propose pushing physical layer bit error rates to below 10-12 before using forward error correction (FEC) codes. This way, the maximum reserve is maintained for the FEC hardware to correct for …
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The effect of metal type and loading on n-paraffin hydrocracking conversion and selectivity
… and reducing the environmental impact of simply flaring it. The value-added work up of natural gas is effected by Gas-to-Liquid conversion via the Fischer-Tropsch Synthesis. Long-chain hydrocarbon waxes are produced and these are subsequently hydrocracked into the required middle distillate …
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Force Values and Rate of Distal Movement of the Mandibular First Permanent Molar
… at a rather rapid rate, (0.39 mm/week). Flaring of the anchorage united was noted in all but one case. The amount ranged between 1 and 2 mm. in four to six weeks. The cases above 100 grams appeared to show the largest amount of flaring. Pain usually associated with tooth movement was …
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