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Effect Of Iron Binding On The Ability Of Crocidolite To Cause Dna Single-Strand Breaks, Jeanne Ann Hardy May 1994

Effect Of Iron Binding On The Ability Of Crocidolite To Cause Dna Single-Strand Breaks, Jeanne Ann Hardy

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Fibrous carcinogens, such as crocidolite asbestos, are known to catalyze many of the same reactions as iron, namely O2 consumption, generation of reduced oxygen species, and damage to DNA, such as strand breaks, and modifications of bases. Upon inhalation, fibers are also known to become coated with an iron-rich material. The mechanism by which this iron is bound to fibers in the lung is not known, and the effect of this additional iron on the reactivity of the fibers is also not well understood. The studies described here were undertaken to elucidate the abilities of crocidolite asbestos, in its …

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Quantitative Dark-Field Mass Analysis Of Ultrathin Cryosections In The Field-Emission Scanning Transmission Electron Microscope, S. Brian Andrews, Roger A. Buchanan, Richard D. Leapman Apr 1994

Quantitative Dark-Field Mass Analysis Of Ultrathin Cryosections In The Field-Emission Scanning Transmission Electron Microscope, S. Brian Andrews, Roger A. Buchanan, Richard D. Leapman

Scanning Microscopy

The availability of a cryotransfer stage, highly efficient electron energy loss spectrometers, and ultrathin-window energy-dispersive x-ray spectrometers for the VG Microscopes HB501 field-emission scanning transmission electron microscope (STEM) provides this instrument with the potential for high resolution biological microanalysis. Recent technical advances offer cryosections that are thin enough to take advantage of the analytical capabilities of this microscope. This paper first discusses the quantitative characterization of freeze-dried, ultrathin cryosections of directly frozen liver and brain by low-dose dark-field STEM imaging. Such images reveal high-quality sections with good structural detail, mainly due to reduced preparation artifacts and electron beam damage. These …

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The Preparation Of Cultured Cells For X-Ray Microanalysis, Alice Warley Apr 1994

The Preparation Of Cultured Cells For X-Ray Microanalysis, Alice Warley

Scanning Microscopy

X-ray microanalysis of cells in culture is being used increasingly for the study of relationships between element (ion) content and cell function. There is, however, no one single method which can be used for the preparation of all different cell types for study by microanalysis. Cells in suspension are usually concentrated by centrifugation, before cryofixation, cryosectioning, and freeze drying. On the other hand cells grown as monolayers are more often studied as whole cell mounts, which are washed to remove the external medium before cryofixation and freeze drying. The alternative approach, sectioning of cell monolayers is rarely used. Some of …

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The Father Of ‘Talk Show Democracy’—On The Line With Larry King, Ted Pease Apr 1994

The Father Of ‘Talk Show Democracy’—On The Line With Larry King, Ted Pease

Journalism and Communication Faculty Publications

IN THE AFTERMATH of what surely was the most extraordinary presidential campaign ever for the American news media, the Larry King story-like the man himself-has taken on almost mythic proportions: Horatio Alger Makes Good. Real good. Today, the mantle of media greatness rests easy on the selfdescribed "Jewish kid from Brooklyn" in the wake of events that defined the "top banana of talk show hosts" as the undisputed kingmaker of the 1990S. Consider: During the presidential race, Ross Perot announced his candidacy (twice) on "Larry King Live"; after belittling the idea, an uncomfortable (and, finally, desperate) George Bush came on …

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Development Concept Plan, Zions Canyon Headquarters, Zion National Park, Utah, United States Department Of The Interior, National Park Service Apr 1994

Development Concept Plan, Zions Canyon Headquarters, Zion National Park, Utah, United States Department Of The Interior, National Park Service

Parks and Reserves

The plan will implement a mandatory shuttle bus system in Zion Canyon during the peak visitor use season. A transit/information center, located in a portion of the Watchman Campground, will function as the shuttle bus staging area. It will include a 575 vehicle parking and bus loading area, information center, visitor comfort facilities, amphitheater, and a picnic area. The Watchman Campground (partially displaced by the shuttle facilities) and South Campground will be rehabilitated to improve circulation and the quality of the campsites. The existing visitor center would be converted to an education center.

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The Presidency In The New Media Age, Everette E. Dates, Ted Pease Apr 1994

The Presidency In The New Media Age, Everette E. Dates, Ted Pease

Journalism and Communication Faculty Publications

Nowhere are the differences between journalism and history more evident than in assessments of the presidency of the United States. If journalism is generously described as "history in a hurry," so is it shortsighted and sloppy as it lurches forward, gathering news in bits and pieces, coming to conclusions based on short-term accomplishments and the court of public opinion.

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Utah Science Vol. 55 No. 1, Spring 1994 Apr 1994

Utah Science Vol. 55 No. 1, Spring 1994

Utah Science

No abstract provided.

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The Microvasculature Of Human Infant Oral Mucosa Using Vascular Corrosion Casts And India Ink Injection Ii. Palate And Lip, Q. X. Yu, K. M. Pang, W. Ran, H. P. Philipsen, X. H. Chen Mar 1994

The Microvasculature Of Human Infant Oral Mucosa Using Vascular Corrosion Casts And India Ink Injection Ii. Palate And Lip, Q. X. Yu, K. M. Pang, W. Ran, H. P. Philipsen, X. H. Chen

Scanning Microscopy

The microvasculature of human hard and soft palate and lip originating from four infant males and six females, aged 6 months to 2 years was studied by scanning electron microscopy of vascular corrosion casts and light microscopy of India ink injected specimens. The capillary loops of the hard palate mucosa and vermilion border of the lips were found to be tall, numerous and consisted of primary, secondary and tertiary loops. Those of the soft palatal and labial mucosa were short, few in number and demonstrated a simple hair-pin shape originating directly from the subpapillary vascular network. It was concluded that …

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Critical Point Mounting Of Kinetoplast Dna For Atomic Force Microscopy, T. Thundat, R. J. Warmack, D. P. Allison, K. B. Jacobson Mar 1994

Critical Point Mounting Of Kinetoplast Dna For Atomic Force Microscopy, T. Thundat, R. J. Warmack, D. P. Allison, K. B. Jacobson

Scanning Microscopy

Atomic force microscope (AFM) images of intact kinetoplast DNA were obtained from samples prepared utilizing critical point drying. These images are compared with AFM images obtained using conventional methods for DNA deposition. Although the images obtained on chemically pretreated mica show more details than on unmodified mica, images obtained with critical point drying were superior. Kinetoplast networks with expected sizes and structures were routinely observed with critical point drying. The resolution of individual strands of DNA was greatly improved, and image artifacts associated with air dried samples were eliminated. Samples prepared using mildly sonicated kinetoplast DNA show isolated minicircles.

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1st Biennial Ultra-High Temperature (Uht) Symposium, Various Authors Mar 1994

1st Biennial Ultra-High Temperature (Uht) Symposium, Various Authors

Other Documents

No abstract provided.

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Integrated Embedding Optimization Applied To Salt Lake Valley Aquifers, A. Gharbi, Richard C. Peralta Mar 1994

Integrated Embedding Optimization Applied To Salt Lake Valley Aquifers, A. Gharbi, Richard C. Peralta

Civil and Environmental Engineering Faculty Publications

The embedding optimization modeling approach is adapted to aid sustainable groundwater quantity and quality management of complex nonlinear multilayer aquifers. Implicit block-centered finite difference approximations of the quasi three-dimensional unsteady flow equation and Galerkin finite element approximations of the two-dimensional advection-dispersion transport equation are embedded directly as constraints in the model. Also used are nonlinear constraints describing river-aquifer interflow, evapotranspiration, and vertical flow reduction due to unconfinement. These circumvent use of large numbers of integer variables. The use of both linear and nonlinear formulations in a cyclical manner reduces execution time and improves confidence in solution optimality. The methodology is …

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Pc Software For Optimizing Groundwater Contaminant Plume Capture And Containment, Richard C. Peralta, Herminio H. Suguino, Alaa H. Aly Feb 1994

Pc Software For Optimizing Groundwater Contaminant Plume Capture And Containment, Richard C. Peralta, Herminio H. Suguino, Alaa H. Aly

Civil and Environmental Engineering Faculty Publications

Simulation/optimization (S/0) models can be used to speed the process of computing desirable groundwater pumping strategies for plume management. They make the process of computing optimal strategies fairly straightforward and can help minimize the labor and cost of groundwater contaminant cleanup.

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Biological Electron Energy Loss Spectroscopy In The Field-Emission Scanning Transmission Electron Microscope, R. D. Leapman, S. Q. Sun, J. A. Hunt, S. B. Andrews Feb 1994

Biological Electron Energy Loss Spectroscopy In The Field-Emission Scanning Transmission Electron Microscope, R. D. Leapman, S. Q. Sun, J. A. Hunt, S. B. Andrews

Scanning Microscopy

The dedicated scanning transmission electron microscope (STEM) combined with parallel electron energy loss spectroscopy (EELS) provides a very sensitive means of detecting specific elements in small structures. EELS is more sensitive than optimized energy-dispersive X-ray spectroscopy by a factor of about three for calcium. Measurement of such low concentrations requires special processing methods such as difference-acquisition techniques and multiple least squares procedures for fitting reference spectra. By analyzing data recorded at each pixel in a spectrum-image it is possible to map quantitatively the elemental distributions in a specimen. It is possible to prepare cryosections that are sufficiently thin to avoid …

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Radiation-Induced Fibrosis: The Structure/Function Relationship, J. C. Murray Feb 1994

Radiation-Induced Fibrosis: The Structure/Function Relationship, J. C. Murray

Scanning Microscopy

Fibrosis is a frequent complication of therapeutic radiation delivered to organ sites such as the thorax and pelvic region. We investigated the relationship between function, and biochemical and structural changes in the lung and colon of CBA mice irradiated with 240 kV X-rays. Progressive changes in lung function, as evidenced by increased breathing rates were observed out to 6 months post-irradiation. Biochemical studies demonstrated increased metabolism (synthesis and breakdown) of collagen around 6 months after irradiation, but provided no evidence of net collagen accumulation. Analysis of collagen isotypes revealed a slight increase in the ratio of types I and Ill. …

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1994 Annual Report, Various Authors Jan 1994

1994 Annual Report, Various Authors

Annual Reports

No abstract provided.

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Comments And Issues Related To Bureau Of Land Management Rangeland Reform 94 Proposals, Darwin B. Nielsen, E. Bruce Godfrey, Donald L. Snyder, Roger Banner, Allen Rosmussen Jan 1994

Comments And Issues Related To Bureau Of Land Management Rangeland Reform 94 Proposals, Darwin B. Nielsen, E. Bruce Godfrey, Donald L. Snyder, Roger Banner, Allen Rosmussen

Economic Research Institute Study Papers

No abstract provided.

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General Catalog 1994-1996, Utah State University Jan 1994

General Catalog 1994-1996, Utah State University

University Catalogs

Contains course descriptions, University college calendar, and college administration.

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Uinta National Forest Rangeland Ecosystem Forest Plan Amendment: Final Environmental Impact Statement, U.S. Forest Service Jan 1994

Uinta National Forest Rangeland Ecosystem Forest Plan Amendment: Final Environmental Impact Statement, U.S. Forest Service

All U.S. Government Documents (Utah Regional Depository)

This final environmental impact statement describes alternatives, including a "no action" alternative for management of national forest rangeland resources on the Uinta National Forest.

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Home Drying Of Food, Charlotte P. Brennand Jan 1994

Home Drying Of Food, Charlotte P. Brennand

All Archived Publications

No abstract provided.

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Nutritive Quality And Mineral Content Of Potential Desert Tortoise Food Plants, United States Department Of Agriculture, Forest Service Jan 1994

Nutritive Quality And Mineral Content Of Potential Desert Tortoise Food Plants, United States Department Of Agriculture, Forest Service

Plants

Minerals and nutrients for desert tortoise food plants from the northeastern Mojave Desert are generally in the normal range for semiarid environments, except that sodium values are low for plants and soil. Annual forbs are often higher in nutritive quality than other plant classes.

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Planting Guide For Utah, Howard Horton Jan 1994

Planting Guide For Utah, Howard Horton

All Archived Publications

No abstract provided.

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Ab Initio Study Of He(1s)+Cl2(X 1Σg,3Πu) Potential Energy Surfaces, G. Chalasinski, M. Gutowski, M. M. Szczesniak, Steve Scheiner Jan 1994

Ab Initio Study Of He(1s)+Cl2(X 1Σg,3Πu) Potential Energy Surfaces, G. Chalasinski, M. Gutowski, M. M. Szczesniak, Steve Scheiner

Chemistry and Biochemistry Faculty Publications

The potential energy surface of the ground state He+Cl2(1Σg) is calculated by using the perturbation theory of intermolecular forces and supermolecular Møller–Plesset perturbation theory approach. The potential energy surface of the first excited triplet He+Cl2(3Πu) was evaluated using the supermolecular unrestricted Møller–Plesset perturbation theory approach. In the ground state two stable isomers are found which correspond to the linear He–Cl–Cl structure (a primary minimum, De=45.1 cm−1, Re=4.25 Å) and to the T‐shaped structure with He perpendicular to the molecular axis (a secondary …

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Nursery Pest Management Final Environmental Impact Statement Record Of Decision, United States Forest Service Jan 1994

Nursery Pest Management Final Environmental Impact Statement Record Of Decision, United States Forest Service

Record of Decisions (ID)

The Final Environmental Impact Statement (FEIS) documents results of the analysis of alternatives for pest management at the USDA Forest Service, Lucky Peak Nursery in the Intermountain Region. I have reviewed the FEIS and related materials, including responses to the Draft Environmental Impact Statement (DEIS) published in December 1991. My decision is based upon that review.

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Nursery Pest Management Final Environmental Impact Statement, United States Forest Service Jan 1994

Nursery Pest Management Final Environmental Impact Statement, United States Forest Service

Final Environmental Impact Statements (ID)

The Forest Service, in compliance with the National Environmental Policy Act of 1969, is presenting three alternative ways of managing pests (weeds, diseases, insects, and animals) at the Lucky Peak Nursery in the Intermountain Region.

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Uinta National Forest, Rangeland Ecosystem Forest Plan Amendment, Final Environmental Impact Statement, United States Forest Service Jan 1994

Uinta National Forest, Rangeland Ecosystem Forest Plan Amendment, Final Environmental Impact Statement, United States Forest Service

Final environmental Impact Statements (UT)

This Final Environmental Impact Statement describes alternatives, including a "No Action" alternative for management of National Forest Rangeland Resources on the Uinta National Forest. Alternatives range from no change from past management practices, which in some instances have resulted in less than favorable ecological conditions on National Forest Rangelands and riparian resources, to managing these resources to achieve the "Potential Natural Community" in terms of vegetative cover types and condition. The environmental consequences of all alternatives considered in detail are displayed. The alternative selected for implementation will become an amendment to the Uinta National Forest Land and Resource Management Plan. …

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Mcmurry Oil Company Jonah Prospect Field Natural Gas Development Environmental Assessment, United States Department Of The Interior Bureau Of Land Management Jan 1994

Mcmurry Oil Company Jonah Prospect Field Natural Gas Development Environmental Assessment, United States Department Of The Interior Bureau Of Land Management

Environmental Assessments (WY)

The U.S. Department of Interior, Bureau of Land Management (BLM), prepared this Environmental Assessment (EA) to evaluate and disclose potential environmental impacts of development of a new natural gas field known as the Jonah Prospect Field (Jonah Field, project area). McMurry Oil Company (McMurry) proposes to drill 40 natural gas wells and construct associated well pads, access roads, gathering and sales pipeline systems; expand an existing compressor station; and include a wareyard at their existing office site.

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The Relationship Between Household Size, Real Wages, And Labor Force Participation Rates Of Men And Women, John D. Groesbeck, L. Dwight Israelsen Jan 1994

The Relationship Between Household Size, Real Wages, And Labor Force Participation Rates Of Men And Women, John D. Groesbeck, L. Dwight Israelsen

Economic Research Institute Study Papers

No abstract provided.

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Environmental Assessment Animal Damage Control On Public Lands Administered By The U.S. Department Of The Interior, Bureau Of Land Management, Casper District, Wyoming, United States Department Of The Interior Bureau Of Land Management Jan 1994

Environmental Assessment Animal Damage Control On Public Lands Administered By The U.S. Department Of The Interior, Bureau Of Land Management, Casper District, Wyoming, United States Department Of The Interior Bureau Of Land Management

Environmental Assessments (WY)

The Bureau of Land Management (BLM) and the Animal and Plant Health Inspection Service (APHIS) recognize that native animals are resources of value and interest to the American people. Animal damage control (ADC) management may be required to minimize depredations to livestock and wildlife species; to protect threatened and endangered species; to maintain viable populations of native wildlife species; to preserve ecologically unique areas; to minimize rodent and other wildlife damage to cropland, grassland, and forestland; and, to suppress animal-borne diseases. ADC functions as a supplement to, not a substitute for, standard husbandry practices and techniques.

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An Application Of The Linear Expenditure Systems To The Pattern Of Consumer Behavior In Taiwan, Tsangyao Chang, Chris Fawson Jan 1994

An Application Of The Linear Expenditure Systems To The Pattern Of Consumer Behavior In Taiwan, Tsangyao Chang, Chris Fawson

Economic Research Institute Study Papers

This study reveals certain systematic tendencies in consumer behavior in Taiwan from 1951 to 1990. The method of systems estimation and precision estimates revealed by significant t statistics and higher R2 make the system of equations a useful tool to characterize broad tendencies in individual allocation of expenditure behavior. This analysis has important implications for government production strategies relating to price and subsidy policies and promotion of reasonable standards of social welfare and health. In general, this study represents our attempt to make a systematic estimation of consumer demand to identify the broad tendencies of individual demand behavior in Taiwan.

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The Horse Industry In Utah, E. Bruce Godfrey Jan 1994

The Horse Industry In Utah, E. Bruce Godfrey

Economic Research Institute Study Papers

No abstract provided.

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