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Articles 60841 - 60870 of 64990
Full-Text Articles in Entire DC Network
Potential Impacts Of Biomass Production In The United States On Biological Diversity, James H. Cook, Jan Beyea, Kathleen H. Keeler
Potential Impacts Of Biomass Production In The United States On Biological Diversity, James H. Cook, Jan Beyea, Kathleen H. Keeler
School of Biological Sciences: Faculty Publications
Biomass could be a renewable source of energy and chemicals that would not add CO2 to the atmosphere. It will become economically competitive as its cost decreases relative to energy costs, and biotechnology is expected to accelerate this trend by increasing biomass productivity. Pressure to slow global warming may also make biomass more attractive. Substantial dependence on biomass would entail massive changes in land use, risking serious reductions in biodiversity through destruction of habitat for native species. Forests could be managed and harvested more intensively, and virtually all arable land unsuitable for high-value agriculture or silviculture might be used …
Radiation Risk Predictions For Space Station Freedom Orbits, Francis A. Cucinotta, William Atwell, Mark Weyland, Alva C. Hardy, John W. Wilson, Lawrence W. Townsend, Judy L. Shinn, Robert Katz
Radiation Risk Predictions For Space Station Freedom Orbits, Francis A. Cucinotta, William Atwell, Mark Weyland, Alva C. Hardy, John W. Wilson, Lawrence W. Townsend, Judy L. Shinn, Robert Katz
Robert Katz Publications
Risk-assessment calculations are presented for the preliminary proposed solar minimum and solar maximum orbits for Space Station Freedom (SSF). Integral linear energy transfer (LET) fluence spectra are calculated for the trapped-proton and galactic cosmic ray (GCR) environments. Organ-dose calculations are discussed using the Computerized Anatomical Man model. The cellular track model of Katz is applied to calculate cell survival, transformation, and mutation rates for various aluminum shields. Comparisons between relative biological effectiveness (RBE) and quality factors (QF) for SSF orbits are made, and fluence-dependent effects are discussed.
A Study Of The Survival Rate Of The Hepatitis B Virus, James Abraham Houck Iii
A Study Of The Survival Rate Of The Hepatitis B Virus, James Abraham Houck Iii
UNF Graduate Theses and Dissertations
Hepatitis B virus (HBV) is one of many viruses transmitted through the blood or body fluids. This paper concentrates on a mathematical study of the survival rate of HBV. Using data which includes the survival time for individuals who were diagnosed as being affected by HBV and those who died from HBV, we fit non-linear models to study the survival time for people affected by the virus. Survival probabilities suggest an exponential curve for the survival time. We also consider a pure death process which is a stochastic model for the survival time of the individuals affected. Our results show …
Littoral And Limnetic Zooplankton Communities In Lake Mead, Nevada-Arizona, Usa, Patrick J. Sollberger, Larry J. Paulson
Littoral And Limnetic Zooplankton Communities In Lake Mead, Nevada-Arizona, Usa, Patrick J. Sollberger, Larry J. Paulson
Publications (WR)
Zooplankton were collected from adjacent littoral and limnetic sites in Lake Mead, Nevada-Arizona, USA. Limnetic species dominated both littoral and limnetic zooplankton communities; littoral species rarely exceeded 2% of monthly total zooplankton densities. Low species richness of littoral taxa and high similarity in species composition between littoral and limnetic habitats appeared to result from uniform horizontal physical and chemical environments, due to horizontal mixing, and from the absence aquatic macrophytes. Significant differences in spatial distribution occurred in phytoplankton biomass, total zooplankton density, and fish "abundances; highest concentrations of these factors occurred nearest an inflow high in nutrients and progressively declined …
Studies Related To Nutrients Entering Groundwater From The Heber Valley Sewer Farm And Dairies, Roland W. Jeppson, Joan Mclean, Calvin G. Clyde, Scott Korom
Studies Related To Nutrients Entering Groundwater From The Heber Valley Sewer Farm And Dairies, Roland W. Jeppson, Joan Mclean, Calvin G. Clyde, Scott Korom
Reports
Foreword: This report includes the results from a two year study in the Heber Valley to determine amounts of nutrients that are entering the groundwaters of the Heber Valley, and might ultimately enter Deer Creek Reservoir. Since Deer Creek Reservoir in Heber Valley, Utah supplies approximately 65 percent of the water distributed to Salt Lake County, the maintenance of its quality is of considerable importance. To maintain the quality of this reservoir and limit its eutrophication "best management" practices for surface water have been implemented gradually during the past decade in Heber Valley. These practices have significantly improved the qualities …
Classification Of Newborns Based On Maturity Rating And Intrauterine Growth At The Medical College Of Virginia Hospitals, Lydia Holmes Sund
Classification Of Newborns Based On Maturity Rating And Intrauterine Growth At The Medical College Of Virginia Hospitals, Lydia Holmes Sund
Theses and Dissertations
Nurses at the Medical College of Virginia Hospitals (MCVH) in Richmond, Virginia, use the Newborn Maturity Rating and Classification Tool to identify high risk infants. An estimate of gestational age is made and using this estimate, weight, length, and head circumference measurements are plotted on graphs on the tool to determine if the infant achieves intrauterine growth smaller, larger or equal to gestational age.
The data used to generate the graphs on the Newborn Maturity Rating and Classification Tool were collected in Colorado during the 1950's. Two nurses at MCVH questioned the use of these graphs. They wanted to know …
Water Resources Review - January 1991 Vol 4 Supplement 1, Annis Water Resources Institute
Water Resources Review - January 1991 Vol 4 Supplement 1, Annis Water Resources Institute
AWRI Reviews
No abstract provided.
Quantum Interference In Clothed-Ion-Atom Binary Peak Structures, C. O. Reinhold, D. R. Schultz, Ronald E. Olson, C. Kelbch, R. Koch, H. Schmidt-Böcking
Quantum Interference In Clothed-Ion-Atom Binary Peak Structures, C. O. Reinhold, D. R. Schultz, Ronald E. Olson, C. Kelbch, R. Koch, H. Schmidt-Böcking
Physics Faculty Research & Creative Works
An impulse approximation for ionizing collisions of clothed ions with atoms is used to explain the origin of an anomalous oscillation in the ejected electron spectrum in the region of the binary peak. In addition, measurements which evidence this feature for 1-MeV/u U21+ ions colliding with helium are presented. It is shown that this behavior arises from interference structures in the elastic differential cross section for the scattering of target electrons from the impinging ion and that it is associated with the well-known phenomenon of rainbow scattering. © 1991 The American Physical Society.
On-Road Carbon Monoxide And Hydrocarbon Remote Sensing In The Chicago Area, Donald H. Stedman, Gary A. Bishop, James E. Peterson, Paul L. Guenther, Iain F. Mcvey, Stuart P. Beaton
On-Road Carbon Monoxide And Hydrocarbon Remote Sensing In The Chicago Area, Donald H. Stedman, Gary A. Bishop, James E. Peterson, Paul L. Guenther, Iain F. Mcvey, Stuart P. Beaton
Fuel Efficiency Automobile Test Publications
No abstract provided.
Status Of Aluminum As A Risk Factor For Dialysis Encephalopathy And Alzheimer's Disease, P. B. Gorelick, D. (Daniel) B. Hier, C. Mangone, S. Robbins, A. Plioplys, S. Kathpalia
Status Of Aluminum As A Risk Factor For Dialysis Encephalopathy And Alzheimer's Disease, P. B. Gorelick, D. (Daniel) B. Hier, C. Mangone, S. Robbins, A. Plioplys, S. Kathpalia
Chemistry Faculty Research & Creative Works
No abstract provided.
Stabilization/Solidification Of Organic Containing Wastes Using Organophilic Clay And Coal Fly Ash, Edith Lagoutte
Stabilization/Solidification Of Organic Containing Wastes Using Organophilic Clay And Coal Fly Ash, Edith Lagoutte
Theses
The relative merits of eight different coal fly ashes for use in the stabilization/Solidification of a waste containing both heavy metals and pentachlorophenol were investigated. Also studied, was the possible use of either untreated or treated (with hexade-cyl ammonium bromide) clay to enhance the stabilization of the organic. The sample composition was : 62% foundry baghouse dust (or 60% if 2% clay as added to the sample), 4.5% cement, 14% coal fly ash, 19.5% water. Pentachlorophenol was chosen as represen¬tative of the organic contamination. All tests were performed after curing the samples at 22°C, 98% Rh for 28 days. The …
Trends Of Eom, B(A)P, Sulfates, And Nitrates In Air-Borne Particulate Matter In Eleven Proximate Locations In New Jersey During 1988, Sathish Pushpala
Trends Of Eom, B(A)P, Sulfates, And Nitrates In Air-Borne Particulate Matter In Eleven Proximate Locations In New Jersey During 1988, Sathish Pushpala
Theses
Air-borne particulate matter was collected at eleven proximate locations in New Jersey during the year 1988. Particulate matter was extracted in cyclohexane and acetone to separate non-polar and polar components. Particulate matter was also analyzed for B(a)P, Sulfates and Nitrates.
This report presents the inter-site and intra-site variation of concentrations of pollutants between summer and winter seasons. Levels of B(a)P varied from 0.12 to 0.03 ng/M3 between urban and rural sites. During winter, B(a)P concentrations were 5 times more than summer. Concentrations of Cyc which represent mostly primary pollutants, were found 3 times lower in rural sites. Ace fractions …
Beryllium-7 And Lead-210 In The Atmosphere And Surface Snow Over The Greenland Ice Sheet In The Summer Of 1989, Jack E. Dibb
Beryllium-7 And Lead-210 In The Atmosphere And Surface Snow Over The Greenland Ice Sheet In The Summer Of 1989, Jack E. Dibb
Earth Sciences
The concentrations of 7Be and 210Pb were measured in surface air and fresh and aging snow samples from Summit (72°20′N, 38°45′W) and Dye 3 (65°10′N, 44°45′W) Greenland, during June and July 1989. The aerosol concentrations of these radionuclides showed rapid variations at both sites, but were nearly twice as high, on average, at Summit. Concentrations in the 16 fresh snowfall events that were sampled also showed wide variability, but the averages were the same at the two sites. The apparent difference in air-snow fractionation and the lack of coherence in the concentration in air time series between the …
Datascan - December 9, 1990, Nova University
Resource Law Notes Newsletter, No. 21, Dec. 1990, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes Newsletter, No. 21, Dec. 1990, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes: The Newsletter of the Natural Resources Law Center (1984-2002)
No abstract provided.
Nitrate Concentrations Of Ground Water Benton County, Arkansas, Charles R. Smith, Kenneth F. Steele
Nitrate Concentrations Of Ground Water Benton County, Arkansas, Charles R. Smith, Kenneth F. Steele
Arkansas Water Resources Center Technical Reports
No abstract provided.
Nitrate Concentrations Of Ground Water Northern Madison County, Arkansas, Andrew Y. Austin, Kenneth F. Steele
Nitrate Concentrations Of Ground Water Northern Madison County, Arkansas, Andrew Y. Austin, Kenneth F. Steele
Arkansas Water Resources Center Technical Reports
The presence of an extensive network of solution channels in the fractured carbonate bedrock and a thin permeable regolith in northwest Arkansas makes aquifers in this region susceptible to contamination. Because of these conditions, there is concern about nitrate contamination of the ground water from land applied animal wastes, commercial fertilizers, rural septic systems and municipal sewage systems. In response to these concerns a survey was conducted of the nitrate concentration in rural water wells in the carbonate aquifers of a 420 mi2 area of northern Madison county during "wet" and "dry" seasons in 1990. Information from well owners, drilling …
Radon Contamination Of Residences In A City Built Upon A Karst Landscape Bowling Green, Warren County, Kentucky, James William Webster
Radon Contamination Of Residences In A City Built Upon A Karst Landscape Bowling Green, Warren County, Kentucky, James William Webster
Masters Theses & Specialist Projects
The United States Environmental Protection Agency (EPA) estimates that 8 to 12% of U.S. homes have radon concentrations that equal or exceed 4 picocuries per liter (pCi/l). A statewide screening of Kentucky by EPA resulted in an average residential radon concentration of 2.8 pCi/l with 17% of the homes at or above 4 pCi/l. EPA requires routine monitoring and maintenance or worker health records in mines and caves having radon daughter concentrations at or above 0.30 working levels (WL).
Bowling Green is a city located in a karst region of south central Kentucky. Residents of Bowling Green have been subjected …
The Calendar - December 1990, Nova University
Electron Emission From Both Target And Projectile In C⁺ + He Collisions, C. O. Reinhold, D. R. Schultz, Ronald E. Olson, L. H. Toburen, R. (Robert) D. Dubois
Electron Emission From Both Target And Projectile In C⁺ + He Collisions, C. O. Reinhold, D. R. Schultz, Ronald E. Olson, L. H. Toburen, R. (Robert) D. Dubois
Physics Faculty Research & Creative Works
The first classical trajectory Monte Carlo calculation of the electronic spectra arising from both target and projectile ionization is presented and compared with experimental measurements of the differential cross section for electrons emitted in C++He collisions. The theoretical treatment is based on an independent-electron model in which the interactions between the electrons are approximated by quantum model potentials. Good agreement is obtained between theory and experiment and structures appearing in the measurements can be explained in terms of the electron emission from either, or both, target and projectile. Further, the relative importance of the electron capture to the continuum and …
The Calendar - November 1990, Nova University
Part I: Oxidation Of Heavy Metal Sulfides In Relation To The Environment; Part Ii: Fundamental Theory & Experiments Concerning Gas Chromatography & Mass Spectrometry, Judith Morgan
Masters Theses & Specialist Projects
Oxidation of heavy metal sulfides is a thermodynamically spontaneous process. Because of this, metal sulfides in the presence of oxygen are not stable. Currently there are over 100 streams and rivers, within the U.S., contaminated with heavy metal mine drainage; therefore an approved method of restoration is necessary. Precipitation of heavy metals as sulfides using H2S as a reductant has been favorably reviewed as a restorative technique to clean up mining areas. However, using this technique on the laboratory scale does not prove to be a viable answer and shows strong pH dependence.
In the past three years …
The Probe, Issue 105 - November 1990
The Probe, Issue 105 - November 1990
The Probe: Newsletter of the National Animal Damage Control Association
THE PROBE
National Animal Damage Control Association
NOVEMBER 1990
What's Happening at the Denver Wildlife Research Center?
Relocation of Golden Eagles
Goose Repellents
North Dakota Habitat Management
Breakaway Snare Development
Impact of Cormorants on the Catfish Industry
Strychnine Registrations
Prevention and Control Tips
Bird Dispersal Techniques
Pesticide Updates
Wildlife Damage in the News
Gulls Damage Silage Bags in New York
Coyote Snaring Program Stopped at Airport
Prairie Dogs Evicted From National Guard Base
Deer Herd Struck by Business Jet
Groundhogs Blackout Airport Lights
WLFA Intervenes in California Bear Suit
NADCA Volunteers
Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, November 1990, College Of Engineering And Computer Science, Wright State University
Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, November 1990, College Of Engineering And Computer Science, Wright State University
BITs and PCs Newsletter
A ten page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.
Water Resources Review - November 1990 Vol 3 No 3, Annis Water Resources Institute
Water Resources Review - November 1990 Vol 3 No 3, Annis Water Resources Institute
AWRI Reviews
No abstract provided.
Novafacts - October 26, 1990, Nova University
1990scholars And Artists Bibliography, Michael Schwartz Library, Cleveland State University, Friends Of The Michael Schwartz Library
1990scholars And Artists Bibliography, Michael Schwartz Library, Cleveland State University, Friends Of The Michael Schwartz Library
Scholars and Artists Bibliographies
This bibliography was created for the annual Friends of the Michael Schwartz Library Scholars and Artists Reception, recognizing scholarly and creative achievements of Cleveland State University faculty, staff and emeriti
Wildlife Damage News, Volume 1, Fall 1990
Wildlife Damage News, Volume 1, Fall 1990
Wildlife Damage News
CONTENTS: Relocating Suburban Raccoons WDM Advisory Committee Meets Rabies Publications from NYS-DOH Deer Damage Management Demonstration Current Literature DMU Citizen Task Force Meetings WDM Inservice Education Deer Management in Christmas Tree Plantations Nuisance Wildlife/Wildlife Rehabilitator Information Hunters—Protection from Lyme Disease
Ua66 1989-1990 Annual Report, Wku Ogden College Of Science & Engineering
Ua66 1989-1990 Annual Report, Wku Ogden College Of Science & Engineering
WKU Administration Documents
Annual report created by then Ogden College of Science, Technology and Health which highlights students, faculty, alumni, international activities, facilities and equipment and departments:
- Agriculture
- Allied Health
- Biology
- Chemistry
- Computer Science
- Engineering Technology
- Geography & Geology
- Health & Safety
- Industrial Technology
- Mathematics
- Nursing
- Physics & Astronomy
Ua66/7/2 Hilltopper News, Wku Chemistry
Ua66/7/2 Hilltopper News, Wku Chemistry
WKU Administration Documents
Newsletter created by and about the WKU Chemistry department.