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Articles 12871 - 12900 of 14253
Full-Text Articles in Entire DC Network
Introductory Remarks, Dudley Thompson
Introductory Remarks, Dudley Thompson
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
No abstract provided.
Energy Conservation And U.S. Farm Production Patterns, Angelos Pagoulatos
Energy Conservation And U.S. Farm Production Patterns, Angelos Pagoulatos
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
Energy conservation practices in crop production would not substantially reduce energy use. Substantial reductions of energy would imply major structural changes in terms of extensive systems of crop production. The tradeoffs between land and energy for future desired crop outputs are derived.
Stability Of Premixed H₂/O₂/N₂ Combusting Turbulent Jets, H. F. Nelson
Stability Of Premixed H₂/O₂/N₂ Combusting Turbulent Jets, H. F. Nelson
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
Experimental measurements and theoretical predictions of the stability of hydrogen-air-nitrogen premixed turbulent flames have been carried out. The turbulent flame is theoretically modeled using finite rate chemical kinetics and a well-stirred reactor. The model contains a free parameter, which is evaluated by comparing the theoretical predictions to experimental results. A hydrogen flame stability experiment was carried out and the results were compared to the theory. The theory and experiment were found to agree, if the free parameter in the theory varied as the reciprocal of the turbulent jet radius squared.
Current State-Of-The-Art Of Electrochemical Batteries From A Users Point Of View, John G. Wolter, John A. Gilbert, James V. Leonard
Current State-Of-The-Art Of Electrochemical Batteries From A Users Point Of View, John G. Wolter, John A. Gilbert, James V. Leonard
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
This paper will present a description of some of the battery types (couples) on the market, energy densities, and recycle lives. The possibility that some of these could be used in the transportation industry will be explored. Speculation of future battery development will be discussed.
Steam Raising With Low-Btu Gas Generators And Potential For Other Applications, Robert Owen Williams, John R. Goss, Brian C. Horsfield, Robert Hodam
Steam Raising With Low-Btu Gas Generators And Potential For Other Applications, Robert Owen Williams, John R. Goss, Brian C. Horsfield, Robert Hodam
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
A pilot plant gas producer was installed at a Walnut processing plant to recover usable energy from cracked walnut shell. The shell was converted to a low-Btu fuel gas (producer gas) and this was used to replace natural gas in a steam boiler. Longterm continuous operation of the producer has yet to be achieved due to mechanical inadequacies of the fuel feed and grate systems. These problems are a result of special fuel characteristics of walnut shell, which are being further investigated on a laboratory scale gasifier. It is expected that component changes and/or fuel preparation can facilitate satisfactory long …
Economic Incentives In The Exploration, Extraction And Refining Of Crude Oil, Angelos Pagoulatos, David Debertin, Emilio Pagoulatos
Economic Incentives In The Exploration, Extraction And Refining Of Crude Oil, Angelos Pagoulatos, David Debertin, Emilio Pagoulatos
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
A simultaneous econometric model consisting of 37 stochastic equations and 3 identities which captures the decisions affecting the supply of new discoveries, the size of proven reserves, the production out of reserves, the demands and supplies of refined products and the imports of crude oil and refined products, is estimated. Simulation with the econometric model analyzed the effect of alternative pricing policies on domestic oil production, consumption and imports.
Theoretical And Empirical Approaches To The Analysis Of Opec, Albert L. Danielsen
Theoretical And Empirical Approaches To The Analysis Of Opec, Albert L. Danielsen
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
Formal theoretical models of world oil price determination have been developed in recent years. In addition, some empirical estimates of expected future prices have been proposed. This paper explains how exhaustible resource and cartel theory are integrated into the opitmal control framework. Some empirical studies in the optimal control tradition are surveyed and evaluated.
The Energy Needs Of The Developing Countries, Vaman Rao
The Energy Needs Of The Developing Countries, Vaman Rao
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
The energy needs of the developing countries are enormous. They will grow with the passage of time as the pace of economic development accelerates and those countries enter the industrial epoch. The sheer physical non-availability of coal and petroleum to most of them makes it obligatory to choose an unconventional resource as an energy-base. The nuclear fission is the only option now available which is feasible, less-expensive and plentiful. Solar and fusion may be the ultimate sources in the steady state, when appropriate technologies are developed.
The Impact Of Changing Net Returns On Minimum Energy Requirements For Grain Farms, James B. Kliebenstein, Robert M. Finley, Douglas C. Farthing
The Impact Of Changing Net Returns On Minimum Energy Requirements For Grain Farms, James B. Kliebenstein, Robert M. Finley, Douglas C. Farthing
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
With sources of energy more restricted and higher priced, optimal combinations of enterprises must logically be considered on the basis of energy efficiency. One method of ascertaining this efficiency is to optimize solutions for given levels of income on the basis of energy used (e.g., the objective function was in terms of energy kilocalories). In general, soybeans were most feasible at lower levels of income regardless of farm size and labor circumstance. As income levels increased, double-cropping (wheat soybeans) was first substituted and finally corn at highest income levels.
4th Annual Umr-Dnr Conference On Energy -- Entire Proceedings, University Of Missouri--Rolla
4th Annual Umr-Dnr Conference On Energy -- Entire Proceedings, University Of Missouri--Rolla
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
No abstract provided.
Coal Gasification And Its Alternatives, Robert L. Huffman
Coal Gasification And Its Alternatives, Robert L. Huffman
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
This paper presents the importance and need for coal gasification to the homeowner in light of the available alternatives. The status of coal gasification and announced projects are outlined citing the regulatory and financial problems which have caused unnecessary and unreasonable delays. Present energy systems are compared showing the efficiency and cost advantages of natural gas to the consumer over electricity. Energy projections stress the importance of coal and nuclear energy for the future. In this regard, utilization of U.S. coal resources for coal gasification and electric power generation are compared. These comparisons show that synthetic gas from coal is …
The Operator’S Guide For Minimizing Energy Costs, Charles Dare, Frank A. Gerig
The Operator’S Guide For Minimizing Energy Costs, Charles Dare, Frank A. Gerig
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
The consumption of petroleum by transportation activities is increasing despite the finite limits on its supply. This paper concentrates on the motor vehicle driver, his driving habits, and guides to reduced fuel consumption which would enable the individual to curtail wasteful practices with respect to vehicle operation.
Forest Residues As An Alternate Energy Source, John G. Riley, Norman Smith
Forest Residues As An Alternate Energy Source, John G. Riley, Norman Smith
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
Forest residues, in combination with more intensified timber production systems have potential as a substantial source of fuel wood. The extent and availability of this resource is discussed, with particular reference to the energetics and economics of existing and proposed harvesting systems. Utilization of residue wood fuels is considered and recent developments in small scale automatic wood chip burning heating systems for residential and commercial use are described.
Large And Small Applications Of Energy Farming, Oliver C. Sitton, E. A. Kobylinski, J. L. Gaddy
Large And Small Applications Of Energy Farming, Oliver C. Sitton, E. A. Kobylinski, J. L. Gaddy
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
The collection of solar energy by photosynthesis and the subsequent conversion of crop matter to natural gas can be practiced in farm scale applications or very large installations. This paper discusses the design and economics of these systems.
Systematic Implementation Of Local, State And Federal Regulations To Control Transportation And Land Use Can Reduce Energy Required For Transportation, J. Larry Josey, J. Edwin Clark
Systematic Implementation Of Local, State And Federal Regulations To Control Transportation And Land Use Can Reduce Energy Required For Transportation, J. Larry Josey, J. Edwin Clark
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
Petroleum is available in limited amounts and the Transportation industry is currently using a giant share of the petroleum based fuel used in America. Ways are explored in this paper to reduce the amount of fuel needed to maintain mobility. Regulations on Transportation and Land Use are shown to be potential tools for fuel savings.
The Current Status Of The Canadian Coal Industry, Philip S. Martin
The Current Status Of The Canadian Coal Industry, Philip S. Martin
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
Mineable reserves of coal are known to exist right across Canada and some 30 mines are currently operating in five provinces, plus one small mine in the Yukon. Total production in 1977 will a- mount to some 30 million short tons with a value of approximately $700 million, which will be a new record tonnage.
The Opec Oil-Pricing Policies, Vaman Rao
The Opec Oil-Pricing Policies, Vaman Rao
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
The capital-theoretic model suggested for determining the price- quantity combinations does not hold in the case of most natural resources, including petroleum, since the inelastic demand function would vitiate the optimal solution. The specification of a dynamic demand function, with necessary, attributes, no doubt, results in a valid optimal solution in period t, but that could be achieved only at the cost of sub-optimal solution in other periods. If the OPEC starts behaving as a discriminating monopoly, instead of as a pure monopoly, the optimal solution is assured in all markets and in all time periods.
Control Of Trace Elements During The Increasing Development Of Coal For Energy, Bobby G. Wixson, Ernst Bolter
Control Of Trace Elements During The Increasing Development Of Coal For Energy, Bobby G. Wixson, Ernst Bolter
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
The question of an energy crisis continues as many people in the United States have difficulty and become confused with what seems to be a continuing excess of gasoline, oil products and questionable reporting of price increases and profit margin by energy companies. However, the majority of the scientific and engineering community, knowledgable politicians and the general public realize that the energy crisis is real. Fortunately there still remains time to practice conservation and the development of alternative and new sources of energy if the United States can unite and implement a viable energy plan.
Cost Effectiveness Of Bio-Gas Systems For Dairy Farms, J. C. Oppenlander, E. A. Cassell, R. N. Downer
Cost Effectiveness Of Bio-Gas Systems For Dairy Farms, J. C. Oppenlander, E. A. Cassell, R. N. Downer
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
Considerable attention has recently been focused on the development of farm management practices that utilize the total resource potential of animal wastes. In addition to the fertilizer value of manure, energy in the form of bio-gas can be generated from manure wastes by an anaerobic digestion process. The purpose of this economic analysis was to evaluate the feasibility of producing energy from the anaerobic digestion of dairy-cow manure. Anaerobic digestion systems were rationally designed for several farm management practices on Vermont dairy farms. These designs were sized to accommodate dairy herds of 20, 50, 100, and 200 cows for both …
Recovery Of Oil From Oil Shale -- An Overall Technological Perspective, Abu Ahmad, Sayeed Hasan
Recovery Of Oil From Oil Shale -- An Overall Technological Perspective, Abu Ahmad, Sayeed Hasan
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
The hydrocarbon content of oil shale can be converted into liquid oil which is a possible energy resource for the future. Different aspects of shale oil recovery is briefly discussed. The technology of modified in situ oil shale retorting, which is receiving increasing attention for commercialization, is discussed in a little more detail.
Manufacturers' Responses To Fuel Supply Problems, Evelyn R. Rosenthal
Manufacturers' Responses To Fuel Supply Problems, Evelyn R. Rosenthal
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
The progress of energy conservation in industry was investigated with the aim of identifying barriers to strong energy conservation efforts. One of these barriers proved to be fuel supply problems as exemplified by the natural gas shortage of 1976-77.
The Political Economy Of Opec, Loring Allen
The Political Economy Of Opec, Loring Allen
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
The Organization of Petroleum Exporting Countries (OPEC) is a part of the hard reality of the present and future energy position of the U. S. It burst upon the world scene in 1973 in response to long years of shabby treatment by the oil companies and oil-importing countries. Through cooperation in the exercise of their sovereignty over oil deposits, OPEC members have extracted increasing revenues through restricting production and raising price. Although serving its own interests, OPEC benefits also the rest of the world, even though its presence portends a shift in the world balance of power.
An Overview Of Potential Impacts Of Changing Petroleum Energy Prices On Grain Farms, Jean-Paul Chavas, James B. Kliebenstein
An Overview Of Potential Impacts Of Changing Petroleum Energy Prices On Grain Farms, Jean-Paul Chavas, James B. Kliebenstein
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
Since the early 1970s world fossil fuel energy prices have risen dramatically. Assuming there is no significant breakthrough in en- ergy technology, the world will see further increases in energy prices. These changes will likely lead to economic adjustments in U. S. agriculture. A firm level linear programming model is used to evaluate what some of these adjustments could be on a Missouri grain farm. To obtain expected energy price affects on production mixes, energy prices are changed parametrically. Potential crop adjustments are from corn to single-crop soybeans to wheat as energy prices increase. Fertilization adjustments are from chemical to …
Separation Of Organic Solutions By The Indirect Fractional Solidification Process With In-Situ Washing And Melting Operations, Juiuun-Perng Chiang
Separation Of Organic Solutions By The Indirect Fractional Solidification Process With In-Situ Washing And Melting Operations, Juiuun-Perng Chiang
Chemical and Biological Engineering ETDs
The main objective of the present thesis study is to experimentally investigate the feasibility of purifying both dilute and concentrated organic solutions by the indirect freezing process with in-situ washing and melting operations under industrially practicable operating conditions. The smooth deposit approach and the dendritic deposit approach are respectively used in separating dilute solutions and concentrated solutions and small ΔT's for heat transfer, less than 3 °C, have been used throughout the study.
A convenient ultrasonic device and easily practicable operating procedures for nucleating slightly super-cooled liquids have been developed. Several freezermelter systems incorporating the new ultrasonic devices have been …
The Separation Of Proteins Via Parametric Pumping And Ion Exchange, Paul Albert Falcon
The Separation Of Proteins Via Parametric Pumping And Ion Exchange, Paul Albert Falcon
Theses
A pH parametric pump, coupled with ion exchange, was used in an experimental investigation to separate a protein-water binary mixture. The model system consisted of a hemoglobin-water binary mixture. A pH gradient throughout the parametric pumping column was sustained with the use of hollow fiber devices incorporating phosphate buffer circulation.
Data is presented for both batch and semi-continuous recuperative mode pH parametric pumping. Continuous pH parametric pumping for protein isolation has also been envisioned.
No attempt has been made to optimize this newly devel-oped process; however, certain parameters are suspected of controlling separation, including buffer concentration, half cycle time, packed …
The Settling Of Particles In A Square Contained Medium, Richard S. Matyas
The Settling Of Particles In A Square Contained Medium, Richard S. Matyas
Theses
Stokes' Law, has been standardly utilized to calculate the terminal velocity of falling particles. However, the limitation of Stokes' Law is that it does not take into account the container walls and their resulting drag forces. Extensive work with additional drag due to cylindrical container walls has been examined by many investigators. The classical and earliest is the well know Ladenburg Correction which cannot be utilized with non-cylindrical containers. This experimental thesis examines the analog of the Ladenburg relationship for a square container. This experimental thesis was undertaken to experimentally determine the value of the constant K1 for a …
Flow Of Polymer Melt Blends Through Porous Media, James Atwood Parker
Flow Of Polymer Melt Blends Through Porous Media, James Atwood Parker
Dissertations
The flow of molten polystyrene, poly(methyl methacrylate) and three blends of these polymers has been studied in a rheogoniometer and in packed beds of unconsolidated spherical glass beads. One primary purpose of the study was to determine the behavior of polymer melt blends in porous media flow. The second major purpose of the work was to develop and test a new and powerful model for packed bed flow based upon the Huang generalized rheological constitutive equations.
Rheological characterization of the pure polymers and blends was obtained using a Roberts-Weissenberg rheogoniometer. Shear and normal stresses were measured at shear rates from …
The Effect Of Ultrasonic Vibrations And Catalyst Particle Size On The Decomposition Of Cumene, John F. Pietranski
The Effect Of Ultrasonic Vibrations And Catalyst Particle Size On The Decomposition Of Cumene, John F. Pietranski
Theses
The effect of ultrasonic vibrations on the vapor phase decomposition of cumene to benzene and proplyene was investigated using silica-aluminum as the cracking catalyst.
The system consists of a tubular reactor with a 4 inch long catalyst chamber made from 1 cm. diameter stainless steel tubing. The catalyst bed was irradiated from above by means of an ultrasonic horn.
The reactor was run at temperatures of 850 to 950°F., frequencies of 26,000 and 39,000 Hz, with a power innut of 0.30 watts/cm.2 . Feed rates of 100 to 300 gms./hr. and catalyst particle sizes of 0.0209 to 0.358 cm. …
Non-Equilibrium Parametric Pumps For Separating Liquids Or Gases, Anil Krishna Rastogi
Non-Equilibrium Parametric Pumps For Separating Liquids Or Gases, Anil Krishna Rastogi
Theses
An experimental and theoretical study has been done of Non-Equilibrium parametric pumps. Mathematical models and computer programmes are developed for both thermal and heatless parametric pumps based on non-equilibrium conditions and linear isotherms. A mathematical study was done for thermal parametric pumps whereas both experimental and theoretical studies were made for a heatless parametric pump. The effect of different operating conditions has been investigated on the separation of NaCl-H2O via a thermal parametric pump and He-CO2 and He-C3H6 gas mixtures via a heatless parametric pump.
The experimental study of heatless parametric pumps was extended …
Vapor-Liquid Equilibrium At Low Pressures : Correlation Of Binary And Prediction Of Multicomponent Data, Norman I. Silverman
Vapor-Liquid Equilibrium At Low Pressures : Correlation Of Binary And Prediction Of Multicomponent Data, Norman I. Silverman
Theses
The Wilson equation is chosen as typical of the new correlations for activity coefficients gaining wide distribution for use in the correlation and prediction of vapor-liquid equilibria today. Vapor liquid equilibrium data for 247 binary systems have been regressed against each of ten (10) objective functions and values of the Wilson energy parameters obtained. For the typical binary system, a wide variation of the Wilson energy parameters are observed when different objective functions are used with the given set of binary data. These are each examined with respect to their capability to correlate multicomponent vapor-liquid equilibrium data for seventy-three (73) …