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Articles 31 - 60 of 433
Full-Text Articles in Physical Sciences and Mathematics
Testing The Role Of Technical Information In Public Risk Perception, Branden B. Johnson, Peter M. Sandman, Paul Miller
Testing The Role Of Technical Information In Public Risk Perception, Branden B. Johnson, Peter M. Sandman, Paul Miller
RISK: Health, Safety & Environment (1990-2002)
It is widely believed that more detail about health effects and likely exposure routes is apt to reduce citizens' concerns about low-probability Risks. The authors' study suggests that providing such detail may not be as useful as, e.g., addressing public concerns and keeping citizens current on officials' actions.
Book Review, Peter C. Christensen
Book Review, Peter C. Christensen
RISK: Health, Safety & Environment (1990-2002)
Review of: MARY R. ENGLISH, SITING LOW-LEVEL RADIOACTIVE WASTE DISPOSAL FACILITIES: THE PUBLIC POLICY DILEMMA. (Quorum Books 1992) [278 pp.], Appendices, index, introduction, references. LC-91-42774; ISBN 0-89930-560-1. [$49.95 cloth. One Madison Avenue, New York NY 10010.]
Field Calibration Of A Transient Model For Broiler Misting, Richard S. Gates, Douglas G. Overhults, Robert W. Bottcher, Shu Hui Zhang
Field Calibration Of A Transient Model For Broiler Misting, Richard S. Gates, Douglas G. Overhults, Robert W. Bottcher, Shu Hui Zhang
Biosystems and Agricultural Engineering Faculty Publications
A transient model to predict temperature within a tunnel ventilated broiler house during misting is developed. The model is calibrated with field data to obtain steady-state constants; transient predictions are compared to measured temperatures during cyclic misting for two different size birds. Measured temperatures during cyclic misting are shown to swing between steady-state asymptotes predicted from the model. Transient response of the model was faster than measured temperature data, in part due to temperature sensor dynamic response. The model predicts the length-wise temperature profile within the building during misting, and can be used to investigate alternate misting strategies and designs. …
The Probe, Issue 125 - September 1992
The Probe, Issue 125 - September 1992
The Probe: Newsletter of the National Animal Damage Control Association
THE PROBE
National Animal Damage Control Association
SEPTEMBER 1992
Bird Strike Committee USA Is Born
Calendar of Upcoming Events
Positions Available
"Wire" Grid Excludes Cormorants from Commercial Catfish Ponds
"Pesticides to 1995" Available
Animal Damage Control in the News:
Arizona Update From WLFA
Ducks Scared For Own Good
California Activists Convicted For Tule Elk Hunt Disruption
Ace Hardware Stops Support for “Kind News” Publication
Attack on California Girl, 5, Results in Coyote Hunt
Norplant for Beavers?
Fifth Eastern Wildlife Damage Control Conference Proceedings.
Wildlife Damage News, Volume 3, Summer/Fall 1992
Wildlife Damage News, Volume 3, Summer/Fall 1992
Wildlife Damage News
CONTENTS: New York's Beaver Management Program: An Update Species Profile—White-tailed Deer 1992 Bureau of Wildlife Coyote Damage Control Workshop Norplant for Beavers? Harvest Season Wildlife Damage Reminders Birds of Prey Assist Farmers Putting People First
Relationship Between Ground And Surface Water Quality In Karst Systems, Richard L. Meyer
Relationship Between Ground And Surface Water Quality In Karst Systems, Richard L. Meyer
Technical Reports
Springs in Northwest Arkansas may originate from relatively small fractures in rock strata or from cave systems. The water emerging from these springs is frequently used as water sources for plants, animals and humans. The quality of the ground water source and the emerging water are uncertain and frequently unknown. In addition, the opportunity to monitor changes in water quality during flow from origin (water entering the cave) to emergence is uncommon. Cave systems with definable drainage basins and accessible sampling points near the midpoint of the cave are also uncommon. Examining the interface between the quality of surface water …
The Prairie Naturalist Volume 24, No.3 September 1992
The Prairie Naturalist Volume 24, No.3 September 1992
The Prairie Naturalist
VESICULAR-ARBUSCULAR MYCORRHIZAE IN BLOWOUT PENSTEMON ▪ T. R. Flessner and J. Stubbendieck
STATUS OF HAPLOPAPPUS FREMONTII A. GRAY SSP. MONOCEPHALUS (A. NELSON) HALL [ASTERACEAE] IN COLORADO ▪ K.A. Schulz and R.B. Shaw
HABITAT CHANGES ABOVE AND BELOW WATER PROJECTS ON THE NORTH PLATTE AND SOUTH PLATTE RIVERS IN NEBRASKA ▪ P. M. McDonald and J.G. Sidle
INSECT FLORAL VISITORS TO FOUR SPECIES OF TALL-GRASS PRAIRIE COMPOSITE (ASTERACEAE: HELIANTHEAE) ▪ J. A. Dickinson and M. J. McKone
SUMMER BIRD USE OF KANSAS WINDBREAKS ▪ T.T. Cable, R.L. Schroeder, V. Brack, Jr., and P.S. Cook
RING-NECKED PHEASANTS AND FOOD PLOT SIZE (GALLIFORMES: …
Dissolved Oxygen Measurements In The Machipongo River System Near Willis Wharf, Virginia, Bruce Neilson, Cheol Mo, Rodney Jackson
Dissolved Oxygen Measurements In The Machipongo River System Near Willis Wharf, Virginia, Bruce Neilson, Cheol Mo, Rodney Jackson
Reports
Most aquatic organisms require· oxygen to survive and consequently, the dissolved oxygen (DO) content of the water is one of the most important measures of water quality. Sources of oxygen are the atmosphere and photosynthesis. Oxygen is consumed by plants and animals during respiration and by microorganisms that decompose organic matter. The more sources and sinks of oxygen, the more difficult it is to understand and predict the oxygen dynamics of a river system. Grossly polluted systems turn out to be quite simple, because the pollutant source dominates. Natural, unimpacted systems often show a balance between a number of sources …
Morphometrics Of The Family Emballonuridae, Patricia W. Freeman, Cliff A. Lemen
Morphometrics Of The Family Emballonuridae, Patricia W. Freeman, Cliff A. Lemen
School of Natural Resources: Faculty Publications
Morphometric analysis revealed three distinctive groups among the genera of emballonurids. Taphozous-Saccolaimus is a group distinctive in size and shape, particularly cranially. Diclidurids are distinctive in appendicular characters only, especially those in the wing. The third group include all other emballonurids. Phylogenetic studies also separated Taphozous-Saccolaimus as distinctive but included diclidurids among other New World species. Compared with molossids, emballonurids are morphometrically quite homogeneous.
Interim Nutrient Budgets For Tampa Bay, Gerold Morrison
Interim Nutrient Budgets For Tampa Bay, Gerold Morrison
Reports
This report addresses one task of the nutrient monitoring project, the development of "interim" (i.e., preliminary) annual budgets for the macronutrients nitrogen and phosphorus in Tampa Bay's major sub-basins. For the purposes of the report, those sub-basins are defined as Hillsborough Bay (HB) , Old Tampa Bay (OTB) , Middle Tampa Bay (MTB) , and Lower Tampa Bay (LTB). The report uses the 1 Environmental Protection commission of Hillsborough County (EPCHC) database and other available info:mation in,an attempt to identify and quantify major sources and slnks for nltrogen and phosphorus within the Tampa Bay system.
The report is organized in …
Modification Of The Stilling Basin At Arthur R. Bowman Dam, Oregon To Reduce Dissolved Gas Supersaturation, Perry Johnson
Modification Of The Stilling Basin At Arthur R. Bowman Dam, Oregon To Reduce Dissolved Gas Supersaturation, Perry Johnson
United States Bureau of Land Management: Staff Publications
A physical model study was conducted in the Hydraulics Laboratory of the us Bureau of Reclamation to develop a modification for the stilling basin at Arthur R. Bowman Dam, Oregon. Flow through the existing stilling basin generates supersaturated dissolved gas levels that exceed state standards. Alternatives stilling basin designs were considered. Resulting dissolved gas levels, modified energy dissipation, and potential structure and river bottom and bank erosion were evaluated.
Innovative Spillway Designs, Thomas Hepler
Innovative Spillway Designs, Thomas Hepler
United States Bureau of Land Management: Staff Publications
Research performed by the ASCE Hydraulics Division - Task Committee on Alternatives for Overtopping Protection for Dams includes the investigation of innovative spillway designs. This paper briefly describes the design and construction of labyrinth spillways, fuseplug embankments, and flexible membrane spillways. A more detailed discussion will be included in the final report of the Task Committee.
Study Of Groins On The Middle Rio Grande, Drew Baird, Cassie Klump
Study Of Groins On The Middle Rio Grande, Drew Baird, Cassie Klump
United States Bureau of Land Management: Staff Publications
The Albuquerque Projects Office of the Bureau of Reclamation installed groins on the Middle Rio Grande to provide bank protection at a severe bend located near Santa Clara Indian Pueblo, approximately 75 miles (121 kIn) upstream of Albuquerque, New Mexico. During the first season of operation of the groins, a discharge near the 2 year design flood of 7,600 ft.3 /s (215 m3 /s) was experienced at the site. Many of the groins showed damage following the recession of the runoff, but performed well at the site. Replacement of riprap will be accomplished before the next runoff season.
User Interface For Pipe Network Program, Istvan Lippai
User Interface For Pipe Network Program, Istvan Lippai
United States National Park Service: Publications
The importance of providing proper user interfaces for computer solutions to engineering problems is not always recognized. Without a proper user interface, even the best engineering program is of lesser value to the practicing professional. Training courses are regularly offered for some of the better known programs where a significant amount of time is spent learning the data input functions of the program. This paper discusses a programming technique using doubly linked lists (DLL) and data transfer that can result in the development of effective user interfaces.
Steady And Unsteady Flow Profiles In Reclamation, Curtis Orvis
Steady And Unsteady Flow Profiles In Reclamation, Curtis Orvis
United States Bureau of Land Management: Staff Publications
The Bureau of Reclamation owns and operates over 300 dams throughout the 17 western states. For most of these structures, tailwater measurements and steady-state water surface profile computations have been made using the PSEUDO program. Accuracy in water surface profile computations especially downstream from powerplants has been important. Small changes in differential head can mean large changes in power production and associated revenues generated. Peaking operations and flow fluctuations downstream from some dams has made flow conditions unsteady. The DWOPER program has been used to evaluate tailwater conditions under fluctuating flows at a number of sites. The STARS model was …
Channel Restoration Above Elephant Butte Reservoir, Christopher A. Gorbach
Channel Restoration Above Elephant Butte Reservoir, Christopher A. Gorbach
United States Bureau of Land Management: Staff Publications
The Bureau of Reclamation is responsible for maintenance of channel facilities above Elephant Butte Reservoir in New Mexico. These facilities are designed to maximize the efficiency of water delivery into the reservoir pool. The major facilities operated and maintained by Reclamation include a rectified floodway channel and the Low Flow Conveyance Channel. When constructed in the 1950's, a period of prolonged drought and low reservoir levels, these channels extended some 20 (32 Ion) miles through then dry areas of the reservoir.
Between 1979 and 1987 flows in the Rio Grande were significantly above normal. Elephant Butte Reservoir filled for the …
Water Current, Volume 24, August 1992
Water Current, Volume 24, August 1992
Water Current Newsletter
Future Water Quality Protection, Coordination, Education, Research and Regulatory Activities Needed
NRDs Commemorate 50 Millionth Tree
Report from the Director: Water Research Top Priority
National Water Information Clearinghouse Workshops Issue Executive Report
What Do We Do Till the Well Runs Dry?
Missouri River Basin Tour Focuses on Surface Water Management in South Dakota and North Dakota
1992 Nebraska Water Legislation
Hardy-Superior Spa Water Quality Regulations
Study: Most Farmers Protect Groundwater
Nebraska Water Groups and Associations
John Muir Newsletter, Fall 1992, John Muir Center For Regional Studies
John Muir Newsletter, Fall 1992, John Muir Center For Regional Studies
Muir Center Newsletters, 1981-2015
John Muir Newsletter university of the pacific fall, 1992 NATURE AND THE HUMAN SPIM volume 2, number 4 '» TOTIfi TRANSFORMATION OF HENRY LOOMIS by Ron Limbaugh A few years ago, while working on a research project at Yale's Sterling Memorial Library, I ran across a 90-page handwritten journal written by Henry Bradford Loomis, son of a prominent Yale mathematician and astronomer, an irresolute companion of John Muir during a three-month trip to Alaska in 1890. In labored but legible longhand, Loomis chronicled the expedition.' It is a fascinating record. Not only does it provide a starkly contrasting view to …
Recent Criteria For Design Of Groins, Cassie Klump, Drew Baird
Recent Criteria For Design Of Groins, Cassie Klump, Drew Baird
United States Bureau of Land Management: Staff Publications
Groins are defined as an elongated obstruction with one end on the bank of a stream and the other end projecting into the flow. Groins may be permeable allowing water to flow through at reduced velocities or impermeable blocking the current. Groins have been used successfully for river bank protection since the 19th century. Extensive research was conducted to determine the most recent design criteria for groins.
The criteria necessary to design a groin field are:
1. groin orientation;
2. length and spacing of groins;
3. predicting scour at groins;
4. elevation of groin crest;
5. groin side slopes and …
Development Of A Decision Support System For Drought Characterization And Management: Application To Lexington, Kentucky, Lindell E. Ormsbee, Ashu Jain
Development Of A Decision Support System For Drought Characterization And Management: Application To Lexington, Kentucky, Lindell E. Ormsbee, Ashu Jain
KWRRI Research Reports
This report presents the results of an investigation into the potential use of expert system technology as an effective tool for drought forecasting and management. Historical data derived from the Kentucky River Basin was used to test the resulting decision support system. This study has demonstrated that expert system technology can serve as an effective platform for use in assisting the decision maker in both characterizing the nature of an existing drought and in selecting and implementing the required management policy.
The success of any decision making process will of course be dependent upon the quality of the data upon …
The Impact Of A Water-Imposed Interruption Of Growth In The Las Vegas Region, William T. White, Thomas M. Carroll, R. Keith Schwer
The Impact Of A Water-Imposed Interruption Of Growth In The Las Vegas Region, William T. White, Thomas M. Carroll, R. Keith Schwer
Publications (WR)
This study is prompted by the expectation that water supplies for the Las Vegas Valley, both those used currently and those additional quantities available from existing sources, cannot sustain significant further economic growth of the region beyond the year 2006.
There are five parts to this study. Part I uses a regional econometric (REMI) model to project the growth of the Las Vegas region to natural maturity, essentially unconstrained by an overriding water shortage.
Part II is a reinforcing cross-section analysis of metropolitan areas in the United States to learn the most common natural growth patterns and those that have …
The Probe, Issue 124 - August 1992
The Probe, Issue 124 - August 1992
The Probe: Newsletter of the National Animal Damage Control Association
THE PROBE
National Animal Damage Control Association
AUGUST 1992
The Public, Coyotes, and Wildlife Damage Management
Calendar of Upcoming Events
Tenth Great Plains Wildlife Damage Control Workshop Proceedings.
Animal Damage Control in the News:
Pickups Seized in Federal Raid
Colorado Phases Out Spring Bear Hunt
WLFA Works to Defeat Proposed Arizona Hunting/Trapping Ban
DWRC Attempting to Develop Deer Baits
Canadian Trappers' Delegation Attends ISO Meeting
Professional trappers College
Public, Coyotes, & Wildlife Damage Management
News from the Northeast
The Coyote by Baxter Black
Biomonitoring Study Of A Constructed Wetland Site Treating Acid Mine Drainage, Barbara A. Ramey, Howard G. Halverson, Linda A. Taylor
Biomonitoring Study Of A Constructed Wetland Site Treating Acid Mine Drainage, Barbara A. Ramey, Howard G. Halverson, Linda A. Taylor
KWRRI Research Reports
Acid mine drainage (AMD) from an underground coal mine in the Jones Branch watershed in McCreary County, KY, substantially reduced water quality in Jones Branch. Downstream from the mine seeps, the pH was routinely below 4.5 and concentrations of most heavy metals, especially iron, were elevated. A cattail wetland (1,022 m2) was constructed on Jones Branch in 1989 to obviate the effects of the AMD. Monthly chemical monitoring was performed on the water from above, from below, and from the 26 cells within the wetland. Based on chemical monitoring, the wetland initially improved water quality, increasing the pH …
Current Trends In Ecologic-Economic Valuation Of Wetlands, Laura Mitchell, Laura Grignano
Current Trends In Ecologic-Economic Valuation Of Wetlands, Laura Mitchell, Laura Grignano
Reports
No abstract provided.
Preliminary Report Results From The City Of Tampa Water Quality, Phytoplankton And Bacteriological Monitoring In The Tampa By-Pass Canal And The Hillsborouhg River: Years 1984-1991, City Of Tampa Department Of Sanitary Sewers
Preliminary Report Results From The City Of Tampa Water Quality, Phytoplankton And Bacteriological Monitoring In The Tampa By-Pass Canal And The Hillsborouhg River: Years 1984-1991, City Of Tampa Department Of Sanitary Sewers
Reports
The information supplied in this report presents monitoring results of water quality, phytoplankton biomass, phytoplankton abundance and taxonomic composition, and bacteriological parameters measured by the City of Tampa Bay Study Group at three stations in the TBC and two stations in the Hillsborough river, upstream of the City of Tampa dam (Figure 1). The time period discussed in this report is from the start of the program in the 1984 through 1991. Results of the measured parameters are presented as annual means, climatological means and summary statistics for the study period.
Mechanical Backup Systems For Electronic Environmental Controllers, Richard S. Gates, Douglas G. Overhults, Larry W. Turner
Mechanical Backup Systems For Electronic Environmental Controllers, Richard S. Gates, Douglas G. Overhults, Larry W. Turner
Biosystems and Agricultural Engineering Faculty Publications
A series of mechanical backup systems for electronic environmental controllers is presented for a typical finishing swine barn and a typical tunnel ventilated broiler house. The systems consist of mechanical thermostats and timers used in parallel with the electronic controller, designed to ensure animal survival in the event of controller or related hardware failure. For swine housing, three distinct mechanical backup functions are identified; for broiler housing, four distinct mechanical backup functions are identified. Schematic diagrams of the mechanical backup functions are provided and their implementation is described.
Fact Sheet No.2: Water Quality And Poultry Disposal Pits, T. C. Daniel, D. R. Edwards, D. J. Nichols, K. F. Steele, Steve Wilkes
Fact Sheet No.2: Water Quality And Poultry Disposal Pits, T. C. Daniel, D. R. Edwards, D. J. Nichols, K. F. Steele, Steve Wilkes
Technical Reports
Disposing of poultry that die during grow out is a serious management problem for poultry producers in Northwest Arkansas and across the country. Poultry disposal can affect water quality and the health of wildlife, livestock and people.
Arkansas Agricultural Chemical Ground-Water Management Plan - Appendices, Gerald King, Darryl Little, Tim Jessup, Charles Armstrong
Arkansas Agricultural Chemical Ground-Water Management Plan - Appendices, Gerald King, Darryl Little, Tim Jessup, Charles Armstrong
Technical Reports
The Arkansas Agricultural Chemical Ground-Water Management Plan (SMP) is based on the Draft State Pesticide Ground- Water Management Plan Guidance and The Pesticides and Ground-Water Protection Strategy prepared by the U.S. Environmental Protection Agency (EPA). The need for a plan to protect ground water from contamination by agricultural chemicals and agents arises from evidence nationwide that using these chemicals can, in some instances, lead to contamination. In February 1988, EPA proposed a strategy to regulate certain pesticides by prohibiting their use in areas vulnerable to leaching unless a state develops and implements an acceptable management plan. The advantage of a …
Black-Tailed Prairie Dog (Cynomys Ludovicianus)
Black-Tailed Prairie Dog (Cynomys Ludovicianus)
Nebraska Game and Parks Commission: Publications
Black-tailed Prairie Dog(Cynomys ludovicianus):
Description
Distribution and Abundance
Habitat and Home
Habits
Food
Reproduction
Mortality
Importance
Management
The Probe, Issue 123 - July 1992
The Probe, Issue 123 - July 1992
The Probe: Newsletter of the National Animal Damage Control Association
THE PROBE
National Animal Damage Control Association
JULY 1992
Wildlife Damage and Animal Welfare: An Australian Approach
Calendar of Upcoming Events
Tenth Great Plains Wildlife Damage Control Workshop Proceedings.
Animal Damage Control in the News:
Prairie Dog Vacuum Less Than Successful
New Livestock Protection Collar Improves Protection Results
Solano Beach Pet Owners Object to Coyote Trapping
DWRC Assists Developing Countries to Increase Food Availability
Nebraska Sheep Producers Reveal Attitudes Toward Predators
USDA Livestock Depredation Survey
Vermont Citizens Find APHIS/ADC Rabies Hotline Contagious
Utah Man Wants Compensation For Coyote Attack