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Environmental Sciences

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Articles 19681 - 19710 of 19851

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Design And Calibration Of Submerged Open Channel Flow Measurement Structures: Part 1 - Submerged Flow, Gaylord V. Skogerboe, M. Leon Hyatt, Keith O. Eggleston Jan 1967

Design And Calibration Of Submerged Open Channel Flow Measurement Structures: Part 1 - Submerged Flow, Gaylord V. Skogerboe, M. Leon Hyatt, Keith O. Eggleston

Reports

No abstract provided.


Frequency And Magnitudes Of Monthly And Annual Flow Rates (As Determined By (A) A Normal Distribution (B) By Ranking (C) A Gamma Distribution And (D) By A Log Normal Distribution), Roland W. Jeppson Jan 1967

Frequency And Magnitudes Of Monthly And Annual Flow Rates (As Determined By (A) A Normal Distribution (B) By Ranking (C) A Gamma Distribution And (D) By A Log Normal Distribution), Roland W. Jeppson

Reports

Background of Program: In developing a water resources atlas for the State of Utah it was necessary to determine the characterisitcs of stream flows within the State. The variations of stream flow for any given month from year to year as well as the variations from month to month throughout the year are important characterisitcs which are determined by analyzing the streamflow records to determine their probability distributions. The program which is descirbed in the following pages was written to determine the monthly as well as annual runoff amounts which might be expected for any number of specified levels of …


Mathematical Simulation Of Small Watershed Hydrologic Phenomena, V. V. Dhruva Narayana, Jay M. Bagley Jan 1967

Mathematical Simulation Of Small Watershed Hydrologic Phenomena, V. V. Dhruva Narayana, Jay M. Bagley

Reports

In many hydrologic investigations concerning small watersheds, data and observations are totally inadequate to provide a basis for outflow hydrographs. Consequently, a variety of empirical approaches have been developed which have limited rational validity. Hydrograph synthesis offers a reasonable approach to predicting the outflow hydrograph characteristics. In order to synthesize a hydrograph, it is necessary to mathematically describe the physical behavior of the dynamic processes involved in the hydrologic phenomena. Hydrograph synthesis may be considered to comprise (a) hydrographs (actual or simulated) of precipitation, (b) hydrographs of abstractions such as interception, infiltration, and depressional storage, (c) routing or translating the …


Using Remote Infrared Sensors To Detect Changes In Moisture Conditions On Natural Watersheds, Ralph D. Briscoe, Frank W. Haws Jan 1967

Using Remote Infrared Sensors To Detect Changes In Moisture Conditions On Natural Watersheds, Ralph D. Briscoe, Frank W. Haws

Reports

Foreword: This report summarizes the results of laboratory measurements of the infrared reflectance of selected living plants typical of the natural watersheds in northern Utah. Data indicate that the IR reflectance decreases as the moisture content of the soil decreases and the moisture tension in the soil increases. Additional data will be collected in the field to confirm the results and to further tests the feasibility of using IR reflectance of vegetation as an indicator of soil moisture conditions on the watershed. Mr. Briscoe, Research Physicist, has been responsible for the gathering of laboratory data and has written the manuscript …


The Ord River Catchment Regeneration Project. 1. The Nature, Extent And Causes Of Erosion In The Ord River Catchment Area, K Fitzgerald Jan 1967

The Ord River Catchment Regeneration Project. 1. The Nature, Extent And Causes Of Erosion In The Ord River Catchment Area, K Fitzgerald

Journal of the Department of Agriculture, Western Australia, Series 4

OF the 17,800 square miles of Ord River catchment area, an estimated 1,450 square miles of country is subject to varying degrees of erosion.

This lies astride the Ord River and its major tributaries, the Elvire, Negri, Stirling, Panton, Turner, Nicholson and RB rivers.

The bulk of the eroded country lies in W.A. but part projects into the Northern Territory.


Control Of Air Pollution Through The Assertion Of Private Rights, Julian Conrad Juergensmeyer Jan 1967

Control Of Air Pollution Through The Assertion Of Private Rights, Julian Conrad Juergensmeyer

Articles by Maurer Faculty

Air pollution is clearly one of the major social problems confronting contemporary American society. Yet the United States is still without an effective federal pollution control program, and those state and local control programs that do exist are largely ineffective. Until government regulation is able to keep the expulsion of air contaminants within tolerable limits, it will be necessary for those seeking to control air pollution to rely upon the assertion of private rights. In this article the author discusses the principal causes of action available to the private pollution controller, and concludes that, although traditional legal concepts may provide …


Press Reports, Walter A. Lawrance Oct 1966

Press Reports, Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.


Bird Control Methods And Devices--Comments Of The National Pest Control Association, Philip J. Spear Sep 1966

Bird Control Methods And Devices--Comments Of The National Pest Control Association, Philip J. Spear

Bird Control Seminars Proceedings

It may be useful to review some of the considerations that go into recommendations concerning bird management. Later I will make some comments concerning specific methods and devices being used in or promoted for bird control work regardless of whether or not they are new. Members of the National Pest Control Association provide a variety of services, such as fumigation, termite control and general pest control which includes rodent control. There are eight such categories listed in our roster, but only one member in five provides every service listed. Bird control is a rather recent development and is the newest …


Blackbird Depredations In Animal Industry: Feedlots, Donald Balser Sep 1966

Blackbird Depredations In Animal Industry: Feedlots, Donald Balser

Bird Control Seminars Proceedings

Reviewing the cattle feedlot problems in the west, we have cattle feedlots near most of our large population centers and in some cases they are located near supplies of rations, such as potatoes in Idaho or beet pulp, milo, etc. Perhaps the greatest number of feedlots are in California which has our largest human population but there are also large operations in Utah, Idaho, Oregon, Colorado, Nevada, New Mexico, and Arizona which have reported bird damage problems. Later on in the program we'll have a film taken by our bird project personnel of work in feedlots in Colorado so I'll …


New Materials From Research, Donald Balser Sep 1966

New Materials From Research, Donald Balser

Bird Control Seminars Proceedings

At the Denver Wildlife Research Center our people are actively searching for means of controlling damage by a whole host of animal and bird species. I say controlling damage rather than controlling species because this should be the primary objective. If we can do this without lethal control, so much the better, and it may be the more lasting solution in the long run. Often removal of some animals by lethal means either increases reproduction, survival, or invasion unless complete control is exercised over sufficiently large areas. In spite of these problems, population reduction is often relied on as a …


Blackbird Flock Behavior In Corn, A Theoretical Model (With Session Discussion), M. I. Dyer Sep 1966

Blackbird Flock Behavior In Corn, A Theoretical Model (With Session Discussion), M. I. Dyer

Bird Control Seminars Proceedings

I realized this past winter that redwings form the base for an international problem, and so I went down to see Jim Caslick in Florida. Unfortunately, I picked the wrong season. I misjudged the weather for when I went down in May to get experimental birds it was pretty hot. Next year I'll be a bit more careful and go down during the winter time. I want to discuss something a bit different but still in line with crop damage by red-winged blackbirds. I want to relate the damage assessment that we're making in agricultural corn to bird behavior. We've …


Antelope Creek, Dead Mans Run And Middle Creek: Salt Creek Basin, Volume Ii: Technical Appendix, United States Army Corps Of Engineers, Omaha District Apr 1966

Antelope Creek, Dead Mans Run And Middle Creek: Salt Creek Basin, Volume Ii: Technical Appendix, United States Army Corps Of Engineers, Omaha District

United States Army Corps of Engineers, Omaha District

This report on Antelope Creek, Dead Mans Run, and Middle Creek is the second in a series of flood plain information reports being prepared for streams in the Lincoln, Nebraska metropolitan area. Volume I of this series, published in August 1964, described flood hazard areas of Salt Creek Haines Branch, and Beal Slough.

This Technical Appendix, covering Antelope Creek, Dead Mans Run, and Middle Creek, is presented in four sections. Section A presents information applicable to all three streams. Sections B, C, and D are devoted to information applicable to the individual streams.


Utah: A Guide For Teaching Social Studies, Fourth Grade, Della W. Mcclellan, Floyd Sucher Jan 1966

Utah: A Guide For Teaching Social Studies, Fourth Grade, Della W. Mcclellan, Floyd Sucher

Elusive Documents

No abstract provided.


Piggery Septic System, N E. Macintyre Jan 1966

Piggery Septic System, N E. Macintyre

Journal of the Department of Agriculture, Western Australia, Series 4

ONE of the problems of intensive houses for pigs is the disposal of the dung and urine.

If proper arrangements are not made to remove this, it soon accumulates in an offensive pile at one end of the piggery, making an excellent breeding ground for flies.


Ammonium Nitrate Blasting Agent (Anfo) For Land Clearing, G A. Greaves Jan 1966

Ammonium Nitrate Blasting Agent (Anfo) For Land Clearing, G A. Greaves

Journal of the Department of Agriculture, Western Australia, Series 4

The introduction of "prilled" AN has revolutionised explosives practice and made possible safer and cheaper methods of blasting.

This article outlines the methods of handling and using ANFO blasting agent for land clearing.


The Relationship Of Flooding And Saline Water Tables, Stanley Thomas Smith Jan 1966

The Relationship Of Flooding And Saline Water Tables, Stanley Thomas Smith

Journal of the Department of Agriculture, Western Australia, Series 4

IN Western Australia there are several ways in which salt manifests itself but the most serious and extensive of these is in the valley systems where shallow saline water tables occur.

This type of salt problem is called "valley waterlogging" and occurs in most of the flat valleys throughout the wheatbelt of W.A.


Summer And Autumn Rainfall In Relation To Epidemics Of Wheat Stem Rust In Western Australia, W A. Shipton Jan 1966

Summer And Autumn Rainfall In Relation To Epidemics Of Wheat Stem Rust In Western Australia, W A. Shipton

Journal of the Department of Agriculture, Western Australia, Series 4

High summer and autumn rainfalls, followed by rust infection of volunteer plants and favourable conditions during late winter and spring, lead to rust epidemics.

WIDESPREAD outbreaks of wheat stem rust are rare in Western Australia.


Irrigation In The South-West : Report On Government-Controlled Areas, 1965-66, G Gauntlett Jan 1966

Irrigation In The South-West : Report On Government-Controlled Areas, 1965-66, G Gauntlett

Journal of the Department of Agriculture, Western Australia, Series 4

LARGE scale irrigation in the south-western part of Western Australia is confined to the coastal plain, west of the Darling Range where the three irrigation districts of Waroona, Harvey and Collie have been established.


Press Reports, Walter A. Lawrance Oct 1965

Press Reports, Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.


Canine Teeth In Two Nebraska Mule Deer, John P. Weigand Aug 1965

Canine Teeth In Two Nebraska Mule Deer, John P. Weigand

Nebraska Game and Parks Commission: Staff Research Publications

During the November 1963 deer hunting season in Nebraska, hunters were required to produce all deer bagged at compulsory check stations. Information regarding species, sex and age of all deer checked was recorded at each station. It was at the North Platte station that the author examined the deer described below. A total of 423 deer, of which 322 were mule deer, were examined at this station.


Contour Planting For Hillside Orchards. Part 1, N H. Shorter Jan 1965

Contour Planting For Hillside Orchards. Part 1, N H. Shorter

Journal of the Department of Agriculture, Western Australia, Series 4

FRUIT growers intending to plant an orchard on sloping land, would be well advised to consider the suitability of the block for planting on a contour system.


Water Vapor Measurements Using Infrared Absorption, Duard S. Woffinden Jan 1965

Water Vapor Measurements Using Infrared Absorption, Duard S. Woffinden

Reports

Man’s attempt to control the amount of available water has taken two approaches, i.e., weather modification and water storage through the use of man-made reservoirs. In either case, it is necessary to ascertain the water vapor content of the atmosphere. In the case of weather modification, if the water vapor content is insufficient, it is futile to attempt to start precipitation. In the case of reservoirs, it is important to know the evaporation rate since it has been demonstrated that some reservoirs provide a net negative contribution to the total water supply by increasing the normal evaporation losses. Any attempt …


The Starling, John L. Long Jan 1965

The Starling, John L. Long

Journal of the Department of Agriculture, Western Australia, Series 4

Despite their pretty colour and their song, starlings cannot be considered beneficial, especially in the fruit and grain-growing areas of W.A. where they are declared vermin.

MILLIONS of starlings inhabit the settled parts of eastern and south-eastern Australia, but so far they have not reached Western Australia.


Kimberley Research Station Progress Report, 1964 : Climate, Jan Jerzy Basinski, E. A. Fitzpatrick, W. R. Stern Jan 1965

Kimberley Research Station Progress Report, 1964 : Climate, Jan Jerzy Basinski, E. A. Fitzpatrick, W. R. Stern

Journal of the Department of Agriculture, Western Australia, Series 4

A review of recent research in climate, soils, tropical crops and pastures, weeds, insect pests and cattle husbandry at the Kimberley Research Station.

EXTENSIVE climatic data are recorded at the Station and analysed in relation to crop performance, irrigation requirements, and farm management practices.


Lot Feeding Of Beef Cattle. 3. Facilities Required For A Feed Lot, W J O Wilkie Jan 1965

Lot Feeding Of Beef Cattle. 3. Facilities Required For A Feed Lot, W J O Wilkie

Journal of the Department of Agriculture, Western Australia, Series 4

MANY THINGS must be considered in planning a feed lot.

The site must be well chosen, fencing, gates and yards must be adequate for the cattle carried and feeding and watering facilities should be of a high standard.

Other things to consider are the provision of shelter and shade for the cattle and buildings for feed storage and other purposes.


How To Measure The Capacity Of Farm Dams, G Gauntlett Jan 1965

How To Measure The Capacity Of Farm Dams, G Gauntlett

Journal of the Department of Agriculture, Western Australia, Series 4

AT some time or another nearly every farmer needs to be able to measure the capacity of an ordinary farm dam of the "excavated earth tank" type and many requests are made for a method of calculating this volume.

This article describes how this can be done.


Public Health Aspects Of Bird Control, William B. Jackson, Ralph Masterson, Paul Schnurrenberger, D. O. Jones, Roderic Jones, John Morley, George Mowrey Sep 1964

Public Health Aspects Of Bird Control, William B. Jackson, Ralph Masterson, Paul Schnurrenberger, D. O. Jones, Roderic Jones, John Morley, George Mowrey

Bird Control Seminars Proceedings

The first session; papers include:
Animal Diseases in General
Public Health Aspects of Bird Control or Zoonoses
Public Relations
Sanitation


Rabbit Control, Warren V. Johnson Mar 1964

Rabbit Control, Warren V. Johnson

Vertebrate Pest Conference Proceedings: 2nd (1964)

Common California rabbits comprise two major genera. One, the genus Sylvilagus, or true rabbit, is represented by the cottontail and brush rabbits. The second of the two major genera is the genus Lepus, or hares. These are erroneously called the jack rabbits and snow shoe rabbits. The common jack rabbit, Lepus californicus, is the most familiar one throughout California and portions of some of the other western states. Because of their size and abundance, they are by far the most destructive - so emphasis will be placed on this species throughout the balance of this report. The diet of the …


Animal Control In New Zealand, Walter E. Howard Mar 1964

Animal Control In New Zealand, Walter E. Howard

Vertebrate Pest Conference Proceedings: 2nd (1964)

New Zealand has a multiplicity of challenging animal-control problems, and all of them concern animals which man has intentionally introduced either for sport, food or fur. Since the beginning of European settlement in the 19th Century, approximately 53 species of mammals and 125 species of birds have been deliberately or accidentally introduced into New Zealand, and 34 birds and 31 mammals have become established (Wodzicki, 1950). The principal reasons the exotic big game animals (Riney, 1955), fur bearers and feral domestic livestock have been so destructive to certain habitats in New Zealand are because 1) some of the soils are …


Starlings In The Pacific Northwest, H. Nelson Elliott Mar 1964

Starlings In The Pacific Northwest, H. Nelson Elliott

Vertebrate Pest Conference Proceedings: 2nd (1964)

As is the case in many sections of the country today, starlings are causing increasing concern in the Pacific Northwest. When these birds were first recognized in Washington, Oregon and Idaho in the early 1940's only small numbers were seen, usually with blackbirds. During the 50's, however, the number of wintering starlings increased from a few birds, to thousands, with estimated flocks of 25,000 to 50,000 in western Oregon and along the Snake River Valley in Idaho and eastern Oregon. During the past five years winter resident populations in these areas have been estimated by the 100,000's, with some observers …