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Geothermal development and environmental protection procedures

Description: The means of implementing the National Environmental Policy Act (NEPA) of 1969 in a Federal geothermal development program are discussed. Various geothermal development constraints are discussed, and the role of the Area Geothermal Supervisor (AGS) is outlined. Steps providing for prelease and postlease environmental protection are given. Suggested solutions to various problems arising from implementation of the Geothermal Steam Act and NEPA are summarized. (JGB)
Date: January 1, 1977
Creator: Chiang, S.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Poling effect on piezoelectric behavior of PZT ceramics

Description: Rod-shaped PZT specimens were sintered with 1 w/o and 5 w/o PbO additives. ZrO/sub 2/ segregations were found in the 1% PbO specimen, and higher PbO segregations were found along the grain boundaries and at grain boundary with no ZrO/sub 2/ segregations in the 5% PbO specimen. On the basis of these microstructural observations and preliminary poling studies sintered thin disc specimens with a 3 w/o PbO additive were prepared for extensive poling studies. It was found that the breakdown limit of… more
Date: June 1, 1978
Creator: Chiang, S.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Filtration and Dewatering: Review of Literature. [117 References]

Description: Filtration and dewatering are important aspects of any chemical process involved in producing solid product from a slurry. However, these operations are not studied in as much detail as other industrial operations like distillation, absorption, etc. In the past, the design of filtration equipment was considered more of an art than science. Only in the last few years have attempts been made to understand the fundamental mechanism underlying these operations. In this review, the present status of… more
Date: September 1, 1980
Creator: Gala, H. B. & Chiang, S. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Response of Solids to Elastic/ Plastic Indentation

Description: A new approach for analysing indentation plasticity and indentation fracture is presented, The analysis permits relations to be established between material properties (notably hardness, yield strength and elastic modulus) and the dimensions of the indentation and plastic zone. The predictions are demonstrated to be fully consistent with observations performed on a wide range of materials. The indentation stress fields can also be adapted to generate predictions of indentation fracture threshol… more
Date: November 1, 1980
Creator: Chiang, S. S.; Marshall, D. B. & Evans, A. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Infrared-emission spectroscopy of CO on Ni

Description: We report the first observation of thermally emitted infrared radiation from vibrational modes of molecules adsorbed on clean, single-crystal metal surfaces. The observation of emission from CO adsorbed on Ni demonstrates the surface sensitivity of a novel apparatus for infrared vibrational spectroscopy, with a resolution of 1 to 15 cm/sup -1/ over the frequency range from 330 to 3000 cm/sup -1/. A liquid-helium-cooled grating spectrometer measures the thermal radiation from a room-temperature,… more
Date: September 1, 1982
Creator: Chiang, S.; Tobin, R.G. & Richards, P.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Coal surface control for advanced physical fine coal cleaning technologies

Description: Research continued on surface control of coal. This report describes Task 7 of the program. The following topics are discussed: quantitative distribution of iron species; surface functional groups; comparison of wet and dry ground samples; study of Illinois No. 6 coal wet ground using additives; study of wet grinding using tall oil; elemental distribution of coal samples wet ground without additives; elemental distribution of coal samples wet ground with tall oil; direct determination of pyrite… more
Date: January 1, 1990
Creator: Morsi, B.I.; Chiang, S-H.; Sharkey, A.; Blachere, J.; Klinzing, G.; Araujo, G. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Coal surface control for advanced physical fine coal cleaning technologies

Description: The progress achieved in leading to effective surface control for selective agglomeration processes was summarized. Several analytical techniques developed in Task 3 were utilized during this quarter to characterize coal samples obtained from agglomeration tests. Surface and near surface (1 {mu}m depth) functional groups were analyzed using Diffuse Reflectance Infrared Fourier Transform spectroscopy. Surface composition analyses were conducted using Laser Microprobe Mass Analyzer. The results o… more
Date: January 1, 1990
Creator: Morsi, B.I.; Chiang, S.-H.; Sharkey, A.; Blachere, J.; Klinzing, G.; Araujo, G. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Coal surface control for advanced physical fine coal cleaning technologies

Description: The overall objective of the project is to develop techniques for coal surface control prior to the advanced physical fine coal cleaning process of selective agglomeration in order to achieve 90% pyrite sulfur rejection at an energy recovery greater than 90% based on run-of-mine coal. The surface control is meant to encompass surface modification during grinding and laboratory beneficiation testing. The project includes the following tasks: Project planning, method for analysis of samples, deve… more
Date: January 1, 1991
Creator: Morsi, B. I.; Chiang, S. H.; Sharkey, A.; Blachere, J.; Klinzing, G.; Araujo, G. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of the electroacoustic dewatering (EAD) process for fine/ultrafine coal

Description: Battelle (Columbus, Ohio) undertook development of its electro-acoustic (EAD) process to demonstrate its commercial potential for continuous dewatering of fine and ultrafine coals. The pilot plant and laboratory results, provided in this report, show that a commercial-size EAD machine is expected to economically achieve the dewatering targets for {minus}100 mesh and {minus}325 mesh coals. The EAD process utilizes a synergistic combination of electric and acoustic (e.g., ultrasonic) fields in co… more
Date: October 31, 1991
Creator: Chauhan, S. P.; Kim, B. C.; Menton, R.; Senapati, N.; Criner, C. L.; Jirjis, B. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of the electroacoustic dewatering (EAD) process for fine/ultrafine coal. Final report

Description: Battelle (Columbus, Ohio) undertook development of its electro-acoustic (EAD) process to demonstrate its commercial potential for continuous dewatering of fine and ultrafine coals. The pilot plant and laboratory results, provided in this report, show that a commercial-size EAD machine is expected to economically achieve the dewatering targets for {minus}100 mesh and {minus}325 mesh coals. The EAD process utilizes a synergistic combination of electric and acoustic (e.g., ultrasonic) fields in co… more
Date: October 31, 1991
Creator: Chauhan, S. P.; Kim, B. C.; Menton, R.; Senapati, N.; Criner, C. L.; Jirjis, B. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Coal surface control for advanced physical fine coal cleaning technologies

Description: This final report presents the research work carried out on the Coal Surface Control for Advanced Physical Fine Coal Cleaning Technologies project, sponsored by the US Department of Energy, Pittsburgh Energy Technology Center (DOE/PETC). The project was to support the engineering development of the selective agglomeration technology in order to reduce the sulfur content of US coals for controlling SO[sub 2] emissions (i.e., acid rain precursors). The overall effort was a part of the DOE/PETCs A… more
Date: January 1, 1992
Creator: Morsi, B. I.; Chiang, S. H.; Sharkey, A.; Blachere, J.; Klinzing, G.; Araujo, G. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Pressurized Fluidized-Bed Hydroretorting of Eastern Oil Shales -- Beneficiation

Description: The Mineral Resources Institute at the University of Alabama, along with investigators from the University of Pittsburgh and the University of Nevada-Reno, have conducted a research program on the beneficiation, of Eastern oil shales. The objective of the research program was to evaluate and adapt those new and emerging technologies that have the potential to improve the economics of recovering oil from Eastern oil shales. The technologies evaluated in this program can be grouped into three are… more
Date: May 1, 1992
Creator: Roberts, M. J.; Lau, F. S.; Mensinger, M. C. (Institute of Gas Technology, Chicago, IL (United States)); Schultz, C. W.; Mehta, R. K.; Lamont, W. E. (Alabama Univ., University, AL (United States)) et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Pressurized Fluidized-Bed Hydroretorting of Eastern Oil Shales -- Beneficiation. Topical Report for Task 4, Beneficiation Research

Description: The Mineral Resources Institute at the University of Alabama, along with investigators from the University of Pittsburgh and the University of Nevada-Reno, have conducted a research program on the beneficiation, of Eastern oil shales. The objective of the research program was to evaluate and adapt those new and emerging technologies that have the potential to improve the economics of recovering oil from Eastern oil shales. The technologies evaluated in this program can be grouped into three are… more
Date: May 1, 1992
Creator: Roberts, M. J.; Lau, F. S.; Mensinger, M. C.; Schultz, C. W.; Mehta, R. K.; Lamont, W. E. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Coal surface control for advanced physical fine coal cleaning technologies. Final report, September 19, 1988--August 31, 1992

Description: This final report presents the research work carried out on the Coal Surface Control for Advanced Physical Fine Coal Cleaning Technologies project, sponsored by the US Department of Energy, Pittsburgh Energy Technology Center (DOE/PETC). The project was to support the engineering development of the selective agglomeration technology in order to reduce the sulfur content of US coals for controlling SO{sub 2} emissions (i.e., acid rain precursors). The overall effort was a part of the DOE/PETCs A… more
Date: December 31, 1992
Creator: Morsi, B. I.; Chiang, S. H.; Sharkey, A.; Blachere, J.; Klinzing, G.; Araujo, G. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A study of multistage/multifraction column for fine particle separation. Quarterly technical progress report, second quarter April 1995--July 1995

Description: The overall objective of the proposed research program is to explore the potential application of a new invention involving a multistage column equipped with vortex-inducing loop-flow contactors (hereafter referred to as the multistage column) for fine coal cleaning process. The research work will identify the design parameters and their effects on the performance of the separation process. The results of this study will provide an engineering basis for further development of this technology in… more
Date: July 20, 1995
Creator: Chiang, S. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A study of multi-stage/multifunction column for fine particle separation. Quarterly report, October 1 - December 31, 1996

Description: The overall objective of the research program is to explore the potential application of a new invention involving a multistage column equipped with concentric draft-tubes (hereafter referred to as the multistage column) for fine coal cleaning and other fluid/particle separation processes. The research work will identify the design parameters and their effects on the performance of the separation process. The results of this study will provide an engineering basis for further development of thi… more
Date: December 31, 1996
Creator: Chiang, S. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A study of multistage/multifunction column for fine particle seperation

Description: The objective if this program is to explore the potential application of a multistage column equipped with concentric draft- tubes (multistage column) for fine coal cleaning. The aim is to identify design parameters of the separation process. In the last quarter we conducted the gas holdup measurement which is an essential part of the hydrodynamic experiments for establishing a process model for engineering design and scale-up.
Date: September 7, 1997
Creator: Chiang, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Study of Multistage/Multifunction Column for Fine Particle Separation.

Description: Hydrodynamic tests were continued in this quarter. Liquid circulation velocities are the characteristic parameters in the multistage column. Conductivity tracer response method has been set up for liquid circulation velocities measurement. The period of dampened sinusoidal conductivity signals can be clearly identified and then converted into linear and superficial liquid velocities.
Date: September 15, 1997
Creator: Chiang, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Study of Multistage/Multifunction Column for Fine Particle Separation.

Description: A non-agitated multi-stage column was constructed and applied to wastewater treatment. Preliminary oil/water separation tests were performed. Excellent separation results verifies the multi-function feature of the multi-stage column. Hydrodynamic behavior is considered as the underlying cause for the separation performance. Therefore, a series of experiments were carried out to investigate the hydrodynamic parameters, including gas holdups and liquid circulating velocities. The experimental dat… more
Date: September 15, 1997
Creator: Chiang, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Unsupervised hyperspectral image analysis using independent component analysis (ICA)

Description: In this paper, an ICA-based approach is proposed for hyperspectral image analysis. It can be viewed as a random version of the commonly used linear spectral mixture analysis, in which the abundance fractions in a linear mixture model are considered to be unknown independent signal sources. It does not require the full rank of the separating matrix or orthogonality as most ICA methods do. More importantly, the learning algorithm is designed based on the independency of the material abundance vec… more
Date: June 30, 2000
Creator: Chiang, S. S. & Ginsberg, I. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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X-ray Magnetic Linear Dichroism of Fe-Ni Alloys on Cu(111)

Description: We have prepared Fe{sub x}Ni{sub 1-x} multilayers on Cu(111) in order to learn how to control the structure and magnetism of these thin alloy films, which are relevant to the giant magnetoresistance (GMR) effect used in magnetic disk drive heads. Using the Spectromicroscopy Facility (7.0.1.2) on Undulator Beamline 7.0 at the Advanced Light Source, we have measured X-ray magnetic linear dichroism (XMLD) signals from both Fe and Ni 3p lines for fourteen different thin Ni-Fe alloy films on Cu(111)… more
Date: April 1, 2001
Creator: Johnson, T F; Chiang, S; Sato, Y; Arena, D. A.; Morton, S. A.; Hochstrasser, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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