Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (11816)
- Utah State University (2745)
- University of Nevada, Las Vegas (1856)
- William & Mary (1843)
- University of Colorado Law School (1643)
-
- Western Washington University (1574)
- China Coal Technology and Engineering Group (CCTEG) (1288)
- Portland State University (1246)
- Department of Primary Industries and Regional Development, Western Australia (1215)
- University of Kentucky (1179)
- Chulalongkorn University (1081)
- Selected Works (1070)
- Montana Tech Library (905)
- University of Arkansas, Fayetteville (857)
- City University of New York (CUNY) (833)
- SIT Graduate Institute/SIT Study Abroad (663)
- University of South Florida (657)
- Clemson University (575)
- Old Dominion University (513)
- Louisiana State University (500)
- Loyola Marymount University and Loyola Law School (482)
- South Dakota State University (477)
- The University of Maine (467)
- University of Vermont (459)
- University of Texas Rio Grande Valley (421)
- SelectedWorks (388)
- Edith Cowan University (383)
- Montclair State University (364)
- University of Tennessee, Knoxville (344)
- University of Texas at El Paso (326)
- Keyword
-
- Climate change (1029)
- Sustainability (913)
- Water quality (853)
- Western Australia (778)
- Research and Technical Reports (657)
-
- United States (597)
- Conservation (530)
- Environment (498)
- Ecology (485)
- Management (476)
- Groundwater (469)
- 2014 International Conference on Hydroinformatics HIC (465)
- GIS (461)
- California (428)
- Virginia (417)
- Agriculture (407)
- Water (383)
- Colorado (348)
- Climate (334)
- Energy (310)
- Natural resources (310)
- Utah (302)
- Gas (301)
- Drought (280)
- Remote sensing (273)
- Hydrology (262)
- Invasive species (258)
- Land use (256)
- Salinity (250)
- And Energy; Structural Materials; Sustainability (248)
- Publication Year
- Publication
-
- Reports (1628)
- School of Natural Resources: Faculty Publications (1585)
- United States Department of Agriculture Wildlife Services: Staff Publications (1529)
- Coal Geology & Exploration (1288)
- Thai Environment (937)
-
- Silver Bow Creek/Butte Area Superfund Site (892)
- Salish Sea Ecosystem Conference (806)
- Electronic Theses and Dissertations (760)
- Independent Study Project (ISP) Collection (626)
- Theses and Dissertations (555)
- United States Geological Survey: Staff Publications (513)
- The Prairie Naturalist (483)
- Great Plains Wildlife Damage Control Workshop Proceedings (478)
- World of Coal Ash Proceedings (472)
- International Conference on Hydroinformatics (464)
- United States Department of Commerce: Staff Publications (424)
- Theses (406)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (399)
- Arkansas Water Resources Center Technical Reports (367)
- LSU Master's Theses (358)
- School of Natural Resources: Dissertations, Theses, and Student Research (343)
- USF Tampa Graduate Theses and Dissertations (341)
- S.C. Water Resources Conference (336)
- Journal of the Department of Agriculture, Western Australia, Series 4 (334)
- Open Access Theses & Dissertations (326)
- Memorandum (316)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (305)
- School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations (302)
- Water Current Newsletter (291)
- Resource management technical reports (287)
- Publication Type
Articles 47011 - 47040 of 52492
Full-Text Articles in Physical Sciences and Mathematics
Resource Law Notes Newsletter, No. 10, Jan. 1987, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes Newsletter, No. 10, Jan. 1987, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes: The Newsletter of the Natural Resources Law Center (1984-2002)
No abstract provided.
Baseline Acidity Of Percipitation At The South Pole During The Last Two Millennia, J H. Cragin, M B. Giovinetto, A J. Gow
Baseline Acidity Of Percipitation At The South Pole During The Last Two Millennia, J H. Cragin, M B. Giovinetto, A J. Gow
United States Army: Publications
Measurements of meltwater pH from annual layers of South Pole firn and ice samples ranging in age from 40 to 2000 years B .P. show that precipitation at this remote site has a higher natural acidity than that expected from atmospheric equilibrium with CO2. The average pH of deaerated (C O2-free)samples was 5 .64 + 0.08, while a irequilibrated samples averaged5 .37 + 0.08, a pH that is about a factor of two more acidic than the expected background pH of 5.65. The observed" excess" acidity can be accounted for by SO1-and NO7 levels in the samples originating from non-anthropogenic …
The State Of Tampa Bay 1986, Agency On Bay Management
The State Of Tampa Bay 1986, Agency On Bay Management
Reports
When the Tampa Bay Regional Planning Council created the Agency on Bay Management, it charged the group with preparing an annual status of the condition of Tampa Bay, the state's largest open water estuary. Therefore, pursuant to the adopted rules of the Council's Agency on Bay Management, this document is the first State of Tampa Bay report. This report includes a discussion of the history of the Agency, an evaluation of how well the bay is doing environmentally and recommendations about what needs to be done in the work program aimed at improving Tampa Bay.
An Inventory And Condition Survey Of Rangelands In The Carnarvon Basin, Western Australia, A L. Payne, G F. Spencer, P J. Curry
An Inventory And Condition Survey Of Rangelands In The Carnarvon Basin, Western Australia, A L. Payne, G F. Spencer, P J. Curry
Technical Bulletins
The inventory and condition survey of rangelands in the Carnarvon Basin, undertaken by the Department of Agriculture and Food, Western Australia (DAFWA) between 1980 and 1982, describes and maps the natural resources of the region’s pastoral leasehold land. This survey report provides a baseline record of the existence and condition of the natural area’s resources, to assist with the planning and implementation of land management practices. The report identified and described the condition of soils, landforms, vegetation, habitat, ecosystems, and declared plants and animals. It also assessed the impact of pastoralism and made land management recommendations. The area surveyed covers …
1987 File Geodatabase Containing Aerial Photos, Pete Reehling, Richard Mckenzie, City Of Tampa Department Of Sanitary Sewers Bay Study Group
1987 File Geodatabase Containing Aerial Photos, Pete Reehling, Richard Mckenzie, City Of Tampa Department Of Sanitary Sewers Bay Study Group
Images
The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the aerial photos for the year 1987.
Polynuclear Hydrocarbons In Sediments And Clams In The Vicinity Of A Refinery Outfall, P. O. Defur, M. E. Bender, C. W. Su, Et Al
Polynuclear Hydrocarbons In Sediments And Clams In The Vicinity Of A Refinery Outfall, P. O. Defur, M. E. Bender, C. W. Su, Et Al
Reports
The objectives of this study were: 1) to determine whether certain organic substances (polynuclear aromatic hydrocarbons) present in a refinery process water are found in adjacent sediments and bivalves; and 2) to determine the concentrations of the compounds detected.
Dust Elimination From Outdoor Feedlots For Sheep, D J. Carter
Dust Elimination From Outdoor Feedlots For Sheep, D J. Carter
Journal of the Department of Agriculture, Western Australia, Series 4
The humble woodchip, widwly used as a soil mulch in Western Australian gardens, is set tto take a new role as a dust inhibito in assembly yards used to hold live sheep for export.
Research by the Department of Agriculture's Soil Conservation Service Branch has shown that, of the materials tested, woodchips were the most effective in preventing dust being generated. Wind speeds had to approach a "near gale" before dust developedfrom the protected soil.
The use of woodchips, therefore, provides a practical alternative to stabalising the soil and preventing an environmental problem associated with one of the State's valuable …
Production From Heifers And First Calvers, G J. Sawyer
Production From Heifers And First Calvers, G J. Sawyer
Journal of the Department of Agriculture, Western Australia, Series 4
Heifers and first calvers present the major problems of the beef breeding herd. Reproduction rates, calf growth and survival of first calvers are generally much poorer than those of adult breeders.
Early successful reproductive performance is important in beef herds because of the high overhead cost of keeping breeding beef heifers or cows, Where possible, beef producers should aim to join heifers at 14 to 15 months of age. To achieve this goal, producers should set production targets for those animals. These targets will differ from farm to farm depending on when calves are turned off and the seasonal feed …
Gypsum Use In The Wheatbelt, M R. Howell
Gypsum Use In The Wheatbelt, M R. Howell
Journal of the Department of Agriculture, Western Australia, Series 4
One of the limitations to crop productivity in the wheatbelt is the poor structure of heavy textured soils. Many years of clearing and cultivation have caused the loss of soil organic matter and breakdown of soil aggregates - particles of sand, silt and clay - in the surface layers. This has led to the development of unstable soils with poor physical properties.
Although loss of soil structure is a serious problem, it can be reversed by altering the tillage practices that caused the problem. This improvement in soil structure and return to productivity can be a slow process. However gypsum …
Seepage Interceptor Drains And Topsoil Salinity, T R. Negus
Seepage Interceptor Drains And Topsoil Salinity, T R. Negus
Journal of the Department of Agriculture, Western Australia, Series 4
The Department of Agriculture established 121 trials in its Narrogin advisory district starting in 1972 to measure the effect of bulldozer and grader built seepage interceptor banks and drains on the topsoil salinity of the land downslope of them.
After 14 years of moniterin, there was no evidence that seepage interceptor drains and banks reduced the top soil salinity on 10 of the 11 sites in the Pingelly, Brookton and Wickepin Shires.
Broadacre Pest Control After Ddt, P J. Michael
Broadacre Pest Control After Ddt, P J. Michael
Journal of the Department of Agriculture, Western Australia, Series 4
DDT may no longer be applied to broadacre crops grown in Western Australia. It is being replaced by other more effective chemicals and with new methods of pest control. DDT was the most effective chemical for the control of several major broadacre pests in this State and farmers may well wonder why this change was necessary and how they will manage without DDT.
Mogumber Drainage Works Succeed, L K. Lenane
Mogumber Drainage Works Succeed, L K. Lenane
Journal of the Department of Agriculture, Western Australia, Series 4
The loss of arable farmland from soil erosion, waterlogging and salinity is a severe problem on some Western Australian farms.
When the arable land comprises only 40 per cent of the total area within the Mogumber Soil Conservation District, this loss is a real cause for concern. So too is the resulting damage to roads, siltation of railway culverts, and deaths of roadside trees from rising saline watertables.
However, drainage, contour and other works undertaken by the Mogumber Soil Conservation District have halted this degredation. Badly eroded areas that were fenced off now have a satisfactory ground cover. A wheat …
Oyster Spatfall In Virginia Rivers: 1986 Annual Summary, James Whitcomb
Oyster Spatfall In Virginia Rivers: 1986 Annual Summary, James Whitcomb
Reports
The Virginia Institute of Marine Science (VIMS) conducts weekly surveys from June through early October to obtain oyster spatfall information. Spat counts are made on oyster shells strung on wire and suspended from stakes on public and private beds. The number of spat on shells is counted each week of the spawning season to determine the potential of a particular area for receiving a strike and to predict the most likely period the strikes will occur.
Colorado Water Law, George Vranesh
Colorado Water Law, George Vranesh
Books, Reports, and Studies
This digital resource contains only an abstract, cover image and table of contents information from the published book.
Print copy of book is available in the University of Colorado’s Wise Law Library: http://lawpac.colorado.edu/record=b130018~S0
Banks : A Method Of Financially Assessing Banks Used To Mitigate Water Erosion In South-Western Australia, John S. Salerian, D J. Mcfarlane
Banks : A Method Of Financially Assessing Banks Used To Mitigate Water Erosion In South-Western Australia, John S. Salerian, D J. Mcfarlane
Resource management technical reports
No abstract provided.
Evaporation Data For Western Australia, G J. Luke, K L. Burke, T M. O'Brien
Evaporation Data For Western Australia, G J. Luke, K L. Burke, T M. O'Brien
Resource management technical reports
No abstract provided.
Water Use By Some Crops And Pastures In The Southern Agricultural Areas Of Western Australia, R A. Nulsen, I N. Baxter
Water Use By Some Crops And Pastures In The Southern Agricultural Areas Of Western Australia, R A. Nulsen, I N. Baxter
Resource management technical reports
No abstract provided.
The Land Resources And Carrying Capacity Of Gascoyne Locations 228 And 229, North Of Carnarvon, Western Australia, M R. Wells, Veronica P M Oma, Alexander Mcrae Holm
The Land Resources And Carrying Capacity Of Gascoyne Locations 228 And 229, North Of Carnarvon, Western Australia, M R. Wells, Veronica P M Oma, Alexander Mcrae Holm
Resource management technical reports
No abstract provided.
Storage Life Of Farm Dams, G J. Luke, C G. Denby
Storage Life Of Farm Dams, G J. Luke, C G. Denby
Resource management technical reports
No abstract provided.
Consumption Of Water By Livestock, G J. Luke
Consumption Of Water By Livestock, G J. Luke
Resource management technical reports
No abstract provided.
Results Of Comparative Studies Of Preservation Techniques For Nutrient Analysis Of Water Samples, Betty A. Salley, Julie G. Bradshaw, Bruse J. Neilson
Results Of Comparative Studies Of Preservation Techniques For Nutrient Analysis Of Water Samples, Betty A. Salley, Julie G. Bradshaw, Bruse J. Neilson
Reports
No abstract provided.
Groundwater Resources Of The Virgin River Basin In Utah, Calvin G. Clyde
Groundwater Resources Of The Virgin River Basin In Utah, Calvin G. Clyde
Reports
The Division of Water Resources is conducting a study of further water development in the Virgin River Basin. This report examines the effects of groundwater development as a part of the overall study. The study area includes about 1000 square miles in the Central Virgin River Basin east of the Hurricane Fault. The deeply incised Virgin River has cut a youthful drainage network with deep canyons and steep escarpments and drains out of southwest Utah across Arizona to Lake Mead in Nevada. A basin-wide geologic map emphasizing groundwater features has been prepared from available reports. Outcrops of the principal sedimentary …
Cabin Point Creek Channelization Study : Final Report, Walter I. Priest Iii, Robert J. Byrne, Bruce J. Neilsen, George R. Thomas
Cabin Point Creek Channelization Study : Final Report, Walter I. Priest Iii, Robert J. Byrne, Bruce J. Neilsen, George R. Thomas
Reports
In the realm of environmental impact assessment and analysis the effects of a proposed project are most often referred to in the subjunctive sense because of the qualifications and probabilities related to these postulations. Seldom does the opportunity present itself to follow a project to fruitition and beyond to, in fact, determine the validity of the assumptions made in arriving at the potential impacts of a project. Even less often is it possible to monitor a project from prior to construction to several years after the project has been completed to ascertain the exact nature of the projects impacts, compare …
A Mark-Recapture Study Of Striped Bass In The James River, Virginia : Annual Report 1987, Joseph G. Loesch, William H. Kriete Jr., Bruce W. Hill
A Mark-Recapture Study Of Striped Bass In The James River, Virginia : Annual Report 1987, Joseph G. Loesch, William H. Kriete Jr., Bruce W. Hill
Reports
Internal anchor tags with external tubes were used to tag 1,986 striped bass in the James River in the Spring of 1987. The total number tagged was adjusted (at this time) to 823 because of observed and suspected tagging mortality. The available stock of striped bass in the Spring contained both young resident fish and mature nonresident fish which left the area of capture after spawning, presumably to migrate north in coastal waters. The exodus of the mature fish after spawning and the absence of a commercial fishery resulted in only 42 tag returns as of Spring 1988. This proportion …
Forested Buffer Zones : Pilot Studies On Efficiency In Reducing Surface And Shallow Groundwater Nutrient Inputs To Estuarine Waters, Carl Hershner
Forested Buffer Zones : Pilot Studies On Efficiency In Reducing Surface And Shallow Groundwater Nutrient Inputs To Estuarine Waters, Carl Hershner
Reports
This study was designed as a pilot study with the intent of identifying important considerations for the design and conduct of an investigation of forested buffer strip performance in Virginia's coastal plain. The approach 3 4' I was to conduct a small preliminary study on a single site using the opportunity to investigate a number of potential sampling methods.
Bear River Water Quality: Phosphorus Control And The Impacts Of Exchanging Water With Willard Reservoir, Darwin L. Sorensen, Craig Caupp, Kenneth W. Barker, Jean M. Ihnat
Bear River Water Quality: Phosphorus Control And The Impacts Of Exchanging Water With Willard Reservoir, Darwin L. Sorensen, Craig Caupp, Kenneth W. Barker, Jean M. Ihnat
Reports
No abstract provided.
Engineering Treatment Of Hazardous Wastewaters Utilizing Dye-Sensitized Photooxidation, Betty-Ann Naeger, R. Ryan Dupont, William M. Moore
Engineering Treatment Of Hazardous Wastewaters Utilizing Dye-Sensitized Photooxidation, Betty-Ann Naeger, R. Ryan Dupont, William M. Moore
Reports
Studies were conducted to determine the applicability of photooxidation for the degradation of selected hazardous and refractory organic compounds. These photochemical oxidation reactions occur through the transfer of energy from electronically excited sensitizer molecules which attain excited states by absorbing visible light energy. Optimum conditions for photooxidation were established based on sensitizer concentration and reaction pH for four polynuclear aromatic pollutants. The rate of photooxidation was found to be independent of the initial substrate concentration for methylene blue-sensitized reactions, and dependent on substrate concentration for solutions without a sensitizing dye. Photolysis of substrate mixtures established acridine and anthracene as photochemically …
Expected Water Surface Levels For The Great Salt Lake, L. Douglas James
Expected Water Surface Levels For The Great Salt Lake, L. Douglas James
Reports
Flooding at the Great Slat Lake could become a major disaster through the high cost of coping with the rising level, sudden collapse of protective levees, failure of pumping to the West Desert to induce increased evaporation, or, fiscally, by a rapid drop in the lake level just after a large protective decision making in the private sector, provide for the design of hydrologically safe levees, and optimize pumping schemes for moving water within a partitioned lake. Doing so will require crossing major theoretical frontiers in the study of basin scale hydrology in an arid climate and for forecasting extreme …
An Assessment And Comparison Of Hazardous Waste Management Hessen, Frg And Ontario, Canada, Elaine F. Collis
An Assessment And Comparison Of Hazardous Waste Management Hessen, Frg And Ontario, Canada, Elaine F. Collis
Theses and Dissertations (Comprehensive)
Hazardous waste management has recently become an issue of great concern for governments in industrialized countries. In spite of this, no one country has established a successful framework which guarantees the safe handling and disposal of hazardous wastes. The ideal system would generate no hazardous wastes in the first place but this, of course, is wishful thinking for highly industrialized societies. The next best or “preferred” solution is a system which emphasized reduction and recycling of hazardous wastes. The existing waste management systems in the world today, however, almost exclusively emphasize treatment and disposal. This thesis assesses the hazardous waste …
Interaction Of Long Waves And Nearshore Barred Topography--A Mechanism Of Bar Migration, Chang-Shik Kim
Interaction Of Long Waves And Nearshore Barred Topography--A Mechanism Of Bar Migration, Chang-Shik Kim
Dissertations, Theses, and Masters Projects
It has been widely observed in nature that longshore bar topography changes profile in the onshore-offshore direction. It is common for some bars to migrate onshore during post-storm phases and offshore during storms. Although the behavior of submarine bars has been widely reported, its mechanisms and forcings are far less clear. to determine the mechanism for bar migration or for the persistence of bar systems, a numerical model is developed, which accounts for the mass transport velocities in the bottom boundary layer induced by a family of combined long waves at surf-beat frequencies and wind waves. The present approach simulates …