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Filters: Publication Type: "journal article" Collection: "ir_eua" Format: "application/pdf" Type: "Text"
| Title | Date | Subject | Description | ||
|---|---|---|---|---|---|
| 51 |
 |
On the relevance of surface growth in soot formation in premixed flames | 2000 | surface growth; soot formation; premixed flames; surface growth mechanisims; particle mass accumulation | The role of surface growth mechanisms in particle mass accumulation was investigated in rich, premixed, ethylene/air flames from non-sooting to moderately sooting conditions using in situ optical diagnostics and predictions from a detailed chemical kinetic model. Particles formed just after the flam... |
| 52 |
 |
On trimodal particle size distributions in fly ash from pulverized-coal combustion | 2002 | trimordal particle size distributions; fly ash; pulverized-coal combustion; fine particles; PM | Combustion-generated fine particles, defined as those with aerodynamic diameters less than 2.5 lm, have come under increased regulatory scrutiny because of suspected links to adverse human health effects. Whereas classical theories regarding coal combustion suggest that mechanisms of ash vaporizatio... |
| 53 |
 |
Parallelization of the P-1 radiation model | 2006 | parallelization; P-1 radiation model; radiative transport equation; LES; large-eddy simulations; RTE | The P-1 radiation model is spatially decomposed to solve the radiative transport equation on parallel computers. Mathematical libraries developed by third parties are employed to solve the linear systems that result during the solution procedure. Multigrid preconditioning accelerated the convergence... |
| 54 |
 |
The partitioning of arsenic during pulverized coal combustion | 2000 | arsenic partitioning; arsenic; pulverized coal combustion; coal-fired electric utility; coal; arsenic volatilization; volatilized arsenic. | An important issue facing the coal-fired electric utility industry is the environmental impact resulting from the release of arsenic contained in the coal. Depending on the forms of occurrence in the coal and transformation mechanism involved, arsenic-containing compounds may exit the furnace in the... |
| 55 |
 |
Petroleum geology of the greater Red Wash Area, Uintah County, Utah | 1965-07 | oil and gas field; sandstone; petroleum geology | The Greater Red Wash area is the largest oil and gas field in the Uinta Basin. The Douglas Creek and Garden Gulch Members of the Green River Formation form a lacustrine delta in the area and yield hydrocarbons from a complex network of discrete sandstones. Each individual sandstone body forms its ow... |
| 56 |
 |
Petroliferous lithosomes in the Moenkopi Formation, southern Utah | 1977 | petroleum; stratigraphic study; southeastern and central Utah petroleum; Moenkopi Formation | Recent stratigraphic studies of the Triassic Moenkopi Formation suggest the possibility of important petroleum potential within the unit in southeastern and central Utah. Potential reservoir rocks include shoreline sandstone in the Black Dragon Member, carbonates in the Sinbad Limestone Member, and ... |
| 57 |
 |
Problems frequently encountered in evaluating tar sand resources-the South Texas San Miguel deposit | 1987-11-02 | evaluating tar sand resources; tar sand resources; South Texas San Miguel deposit; OOIP; tar sand deposit | Good porosity and fluid saturation values are essential for accurately delineating original oil in place (OOIP) and evaluating the effectiveness of in situ recovery methods. Whereas the techniques for measuring and calculating these parameters from cores or downhole logs are well established for mos... |
| 58 |
 |
Quantum mechanical study of molecular weight growth process by combination of aromatic molecules | 2001 | molecular weight growth; aromatic molecules; Quantum mechanics; Quantum mechanical study; aromatic moietes. | Formation pathways for high-molecular-mass compound growth are presented, showing why reactions between aromatic moieties are needed to explain recent experimental findings. These reactions are then analyzed by using quantum mechanical density functional methods. A sequence of chemical reactions bet... |
| 59 |
 |
Reduction of nitric oxide on the char surface at pulverized combustion conditions | 2002 | reduction of nitric oxide; nitric oxide; pulverized combustion; char formation; char surface | This study presents an experimental evaluation of the rate of nitric oxide reduction on the char surface. It addresses the claim that the rate for the destruction of nitric oxide on the char surface has been underpredicted due to char deactivation in the process of char formation. Experiments conduc... |
| 60 |
 |
Relationships between composition and pulmonary toxicity of prototype particles from coal combustion and pyrolysis | 2009 | toxicity; prototype particles; coal combustion; pyrolysis; health effects; coal combustion fly-ash particles | The hypothesis that health effects associated with coal combustion fly-ash particles are exacerbated by the simultaneous presence of iron and soot was tested through two sets of experiments. The first set created prototype particles from complete and partial combustion, or oxygen free pyrolysis of a... |
| 61 |
 |
Revised Utah population estimates for the 1990s | 2001-05 | Every 10 years, the U.S. Bureau of the Census conducts a population count. In the intervening years the Utah Population Es timates Committee (UPEC) annually prepares total resident population estimates for each of the 29 counties in the state. These estimates are based on methods that ut i l i z e s... | |
| 62 |
 |
Salt Lake County's distinctive demographics: implications for the future | 2006-11 | Salt Lake County is the economic, political, and cultural center of Utah. The county is currently home to nearly 40% of Utah residents and generates about half of all jobs in the state. It remains the most populous county, with a million of the state's 2.6 million residents,2 and its daytime populat... | |
| 63 |
 |
Size-range analysis of diesel soot with ultra-small angle X-ray scattering | 2005 | desiel soot; ultra-small angle X-ray scattering; Carbonaceous soot; diesel fuel; soot powders; soot | Carbonaceous soot produced in a small diesel engine test facility was investigated with ultra-small-angle X-ray scattering. Three soot samples produced using a reference diesel fuel and the reference fuel plus two oxygenate additives were investigated. The presence of objects at three typical size r... |
| 64 |
 |
State space sensitivity to a prescribed probability density function shape in coal combustion system: Joint B-PDF versus clipped Gaussian PDF | 2000 | space sensitivity; coal combustion; b-PDF mixing model; three coal-off gas; pulverized-coal research furnace | The turbulent transport of three coal off-gas mixture fractions is coupled to a prescribed joint b-probability- density-function (b-PDF) mixing model. This physical transport and subgrid joint b-PDF mixing model is used to explore the incorporation of coal off-gas compositional disparities between t... |
| 65 |
 |
Taking another look at Utah's tar sand resources | 2009 | tar sand; tar sand resources; unconventional energy resource; alternate energy resource; oil impregnated sandstone; oil sand; bitumous sandstone; energy resource | Recent increases in the price of crude oil have sparked renewed interest in unconventional energy resources, including Utah s tar sands. Tar sands (also called oil-impregnated sandstones, oil sands, and bituminous sandstones) are, as the names imply, sandstones that are saturated or filled with blac... |
| 66 |
 |
Utah's demographic transformation: a view into the future | 2008 | Utah, along with the rest of the nation, is in the midst of an extraordinary demographic transformation which has far from run its course. The confluence of four major trends continues to dramatically reshape the size and composition of the national and state populations. These trends include the ar... | |
| 67 |
 |
Utah's place in the macro-demographics of the U.S. in the 20th century | 2006-03 | Utah has evolved from an isolated rural state of fewer than 300,000 in 1900 to a mostly urban state of 2.5 million today. This paper is an attempt to place this population growth within the context of the broadest outlines of national population dynamics over the past century. The growth and regiona... | |
| 68 |
 |
Vaporization of arsenic, selenium and antimony during coal combustion | 2001 | coal-fired power; arsenic; selenium; antimony; coal combustion; ubmicron particles; vaporization during coal combustion | Accumulation of toxic trace elements generated by coal-fired power stations presents a serious threat to the environment. Field testing and laboratory studies have revealed the existence of trace elements in submicron particles emitted from power stations. Arsenic, selenium, and antimony are present... |
| 69 |
 |
Virtual Radiometers for Parallel Architectures | 2012 | parallel architectures; virtual radiometers; a parallel ray tracing scheme; ray tracing algorithms; radiation; ray tracing; monte carlo; combustion; radiometer; parallel | Background: Parallelization of traditional ray tracing algorithms for radiation applications in participating media suffers from the large amount of inter-processor communication required to hand off rays between processors. As a result, strong scaling of these algorithms falls short of the required... |