Physical Sciences and Mathematics Commons^™

Rodent Control Problems In Developing Countries, Robert Z. Brown

Vertebrate Pest Conference Proceedings: 4th (1970)

None of the so-called developing countries has an adequate rodent control program at present. In only a few of these countries is any rodent control research occurring despite the fact that rodent problems are actually quite serious in many regions and potentially so in others. Expertise, techniques and materials from the developed countries are of limited usefulness because of major differences in rodent species involved, standards for food handling and sanitation, and in the cultural contexts in which rodent control must occur. Trained personnel, both for control work and the basic research needed, are in very short supply. In addition, …

The Outlook For Vertebrate Pest Control, Howard A. Merrill

Vertebrate Pest Conference Proceedings: 4th (1970)

Because of the increased concern for the environment and the public's positive action toward preservation of all forms of plant and animal life, future control methods for pest animals will require a greater degree of specificity than in the past. Vertebrate pest control does not face a very promising future unless the independent and cooperative effort of both industry and government is expanded. The time has passed when one could use a chemical simply because it was a good poison or repellent. Now, especially when food or feed crops are involved, it is necessary to know a lot more about …

The Pocatello Supply Depot, Adolph Zajanc

Vertebrate Pest Conference Proceedings: 4th (1970)

The Pocatello Supply Depot is operated by the Division of Wildlife Services, Bureau of Sport Fisheries and Wildlife, a branch of the U. S. Fish and Wildlife Service--all a part of the Department of Interior. The major purpose of the Supply Depot is to provide rodent and predator control materials not available to the general public, to cooperating Federal, State and private agencies. On occasion materials are also provided to Canada and to South American countries as well as other foreign countries after a review of justification by the Central Office.

Some Vertebrate Pest Problems In Japan, Tatsuo Udagawa

Vertebrate Pest Conference Proceedings: 4th (1970)

The wildlife in Japan does more damage in outbreaks in forestry than in agriculture. Hares annually damage in excess of 250 thousand acres. Voles annually damage 50 to 100 thousand acres; in some areas great damage may occur suddenly. The giant flying squirrel damages areas of replanted trees in southern areas of Japan. The Himalayan black bear strips the bark on tree trunks. In agriculture, the sparrow and the duck do an excessive amount of damage in rice fields, and the boar does conspicuous harm in the plowed fields of mountain villages. In Okinawa, sugar cane is attacked by Rattus …

The Role Of The Wildlife Refuge In Relief Of Vertebrate Pest Damage In Agriculture, John B. Cowan

Vertebrate Pest Conference Proceedings: 4th (1970)

Wildlife Refuges in the upper Sacramento Valley of California carry out a very significant role in the relief of wildlife problems to agriculture. The degree and diversity of vertebrate pest control effort by these refuges vary with local conditions and with environmental and budgetary limitations. Both the California Department of Fish and Game and the U. S. Fish and Wildlife Service consider the relief of crop damage to agriculture one of their most important functions. This is demonstrated by existing programs at the Sacramento, Delevan, Colusa and Sutter National Wildlife Refuges and the California Fish and Game Gray Lodge Wildlife …

Bird Damage Problems In Latin America, John W. De Grazio, Jerome F. Besser

Vertebrate Pest Conference Proceedings: 4th (1970)

In 1968 and 1969, biologists of the Denver Wildlife Research Center made field surveys in six Latin American countries to obtain information on bird damage problems in agriculture under an agreement with the Agency for International Development. Species of icterids, fringillids, psittids, columbids, and anatids caused most of the damage. Grain sorghum, corn, and rice were damaged most heavily. Other crops such as soybeans, wheat, cacao, and mangoes were also damaged, but seldom seriously.

Reproduction Inhibitors For Bird Control, M. R. Woulfe

Vertebrate Pest Conference Proceedings: 4th (1970)

Reproduction inhibitors are intended to maintain or control a population at a desired level; toxicants aim at elimination of the population. Azocosterol hydrochloride (SC-12937; 20,25-diazocholestenol dihydrochloride) is a long acting inhibitor of ovulation in the pigeon (Columba liyia) by interfering with cholesterol synthesis and egg yolk formation. Corn impregnated with SC-12937 at the 0.1% level by weight and fed for 10 days has been found to inhibit or diminish reproduction for 5-6 months. Population turnover rate, mortality and longevity of the feral urban pigeon are also discussed.

House Finch (Linnet) Control In California, Thomas K. Palmer

Vertebrate Pest Conference Proceedings: 4th (1970)

The house finch or linnet, Carpodacus mexicanus frontalis (Say) is a protected migratory nongame bird indigenous to California and found abundantly in all but the northern and mountainous areas. These finches attack more than twenty different crops and damage is demonstrated by fruit pecks, seed removal, and disbudding. When house finches cause agricultural damage control measures must be carried out under the general supervision of a county agricultural commissioner. Control practices involve the use of toxic baits, trap-decoy stations, and bio-acoustical devices. Most importantly, these control methods have been demonstrated to be safe, selective, and successful when employed by persons …

Importation Of Wildlife, Holger S. Larsen

Vertebrate Pest Conference Proceedings: 4th (1970)

The importation of live birds, mammals, reptiles, fish and amphibians into the United States is a growing problem to law enforcement agencies of the Federal and State governments. Importation of the above types of animals into the United States is supervised by the Bureau of Sport Fisheries and Wildlife, of the U. S. Department of the Interior. The function is of a regulatory nature: 1. to insure that no prohibited species enter the United States; 2. to enforce compliance with certain Federal Acts such as (a) the Migratory Bird Treaty Act, (b) the Lacey Act, Title 18 USC, Sec. 42, …

Current Work On Bird Hazards To Aircraft, Victor E. F. Solman

Vertebrate Pest Conference Proceedings: 4th (1970)

Collisions between birds and aircraft have caused loss of human life and millions of dollars worth of property damage. The advent of even larger planes may reduce airframe damage, but it seems doubtful that engine damage will be significantly reduced. Dealing with the problem biologically, involves combating the hazards caused both by birds on or near the ground at airfields, and by birds on mass migrations at altitudes up to several thousand feet above ground. Airports can be designed or altered to minimize their attraction to birds. The chance arrival of a flock of birds must be treated as an …

The Organisation Of Rabbit Control (Oryctolagus Cuniculus) In Western Australia, A. R. Tomlinson, C. D. Gooding

Vertebrate Pest Conference Proceedings: 4th (1970)

ABSTRACT: Under Western Australian legislation, landholders have an obligation to control rabbits on their properties; local authorities the responsibility to supervise their work whilst the Agriculture Protection Board has a Statewide supervisory and co-ordination role. Prior to 1950 (when the Agriculture Protection Board was formed) the central role was in the hands of a Government department which, through lack of staff and money was unable to provide adequate supervision, and rabbits were in plague proportions. Since 1950, the Board has actively engaged in a vigorous policy aimed at tighter control and supervision. To enable this, the Board has entered into …

Conference Participants -- 4th Vertebrate Pest Conference,

Vertebrate Pest Conference Proceedings: 4th (1970)

The Fourth Vertebrate Pest Conference was the largest ever, with 275 registered participants and an estimated additional 50 to 75 persons who attended portions of the conference but did not register. The attendance was made up of individuals having varying interests in vertebrate pest problems, including foresters, agriculturalists, conservationists, pest control operators, vector control specialists, health officials, wildlife specialists, product distributors and manufacturers, instructors and researchers from twenty nine states plus the District of Columbia. Participants from Canada, England, Germany and Japan provided an international touch which contributed greatly to the success of the conference.

Algal Growth And Decomposition: Effects On Water Quality, Edward G. Foree, John S. Tapp Jr.

KWRRI Research Reports

The chemical composition of algae grown in batch culture depends mainly on environmental conditions, nutrient availability, presence of predators, cell age, and species. The effects of nutrient availability and cell age on the composition of three unialgal cultures (algae + bacteria) and one hetergeneous culture (algae + bacteria + microscopic animals) were evaluated. The cultures were grown in batch culture under both nutrient-abundant and nutrient deficient conditions and the changes in compositions were observed. Luxurious uptake where nutrients are incorporated into cellular protoplasm at levels greater than those necessary for growth, and super-luxurious uptake, where some nutrients are stored rather …

The Ias Bulletin, V4n2, March 1970, Iowa Academy Of Science

IAS Bulletin

In this issue:

--- Officers, Directors, and Section Chairmen, 1969-1970
--- Full Program Scheduled for Grinnell April 24-25
--- Pre-Register for the Annual Meeting!
--- Academy Geologist Authors Book on Geodes
--- Constitution Revision
--- Iowa Academy of Science Registration got 82nd Session
--- Membership in the Academy
--- Environmental Week at ISU
--- Cooperative Projects for Two Year Colleges Funded by NSF
--- New Members Since January

Hydrologic Inventory Of The Uintah Study Unit, Lloyd H. Austin, Gaylord V. Skogerboe

Reports

The 1963 Utah State Legislature authorized the Utah Water and Power Board (now the Utah Division of Water Resources) to develop a state water plan in order to give coordination and direction to the activities of all state and federal agencies concerned with Utah's water resources. To facilitate the development of this plan, a proposal was submitted through the State Planning Coordinator in the Governor's Office to the Urban Renewal Administration of the Housing and Home Finance Agency. Funding was approved effective May 19, 1966, under the Urban Planning Assistance Program authorized by Section 701 of the Housing Act of …

Use Of Groundwater For Irrigation: Seward County, Nebraska, J.M. Jess

Conservation and Survey Division

No abstract provided.

Use Of Groundwater For Irrigation: Seward County, Nebraska, J.M. Jess

Conservation and Survey Division

No abstract provided.

Closed Conduit To Open Channel Usu Stilling Basin, Gordon H. Flammer, Gaylord V. Skogerboe, Chi-Yuan Wei, Hameed Rasheed

Reports

Criterion have been developed for designing a stilling basin to serve as a transition from closed conduit flow to open channel flow for a fully submerged pipe outlet. The unique feature of the stilling basin is the short-pipe energy dissipater so located and designed as to provide maximum energy dissipation for the basin configuration. The expanding characteristics of a submerged jet were used in establishing the length of the stilling basin. The unsteadiness of the water surface and the relative boil height in the model basin were used as the criteria for evaluating the effectiveness of the structure for energy …

Rayleigh Hysteresis Shape: Its Relationship To Displacement Distance Of A Single Domain Wall In 50% Ni–Fe, R. C. Woodbury, M. R. Hunt

Faculty Publications

The need to measure the displacement distance of domain walls from equilibrium for very weak alternating fields (H ≪ coercive force) in bulk magnetic material has prompted a study of the possible use of the opening of the Rayleigh hysteresis loop to indicate the amount of wall displacement. This paper contains (1) a review of the theoretical relationship between hysteresis shape and the displacement distance of a domain wall, based upon defect-energy models of Rodbell and Bean, and Baldwin; and (2) an experimental approach which provides a measure of the wall displacements versus hysteresis shape for 50% Ni–Fe tape. Discrepancies …

Some Contributions To The Analysis Of Circular Data., J. S. Rao Dr.

Doctoral Theses

In many diverae scientifie fields, one cones serose experimente where the basie variable unter obaervation ia a direction. We ahall be conoerned, throughout this theais, only with diraations in two-dimensions and wo refer to such a collection of directione an 'circular data or dimenstionl data. In order to make a statintical analyaie of circular data, the first prerequisite is to put thom in a quantitative form. One way of doing thie is to represent the directiona anglea no aaured d thre apeet to eone mui tably choscn sero direation. Al ternately, einee a direetion han no nagni- tude, it can …

Some External Problems And Charecterization In The Theory Of Graphs., Ramachandra Rao Dr.

Doctoral Theses

Graph theory has become such a well known and widely applied subject that it is not nocessary to give a general Introduetion to it. Instead ve eive helov a summary of the results of the thesis chapterwise.The study of extremal problems in Graph theory was started by Turan who deternined the minimum independence number of a graph on n vertices vith m edges. More recently Harary determined the maxinum conneetivity of a graph on n vortices vith m edges.In a paper concerning the degrees of the vertices of a graphy laktnd posed the following two problems : dotermin the maximum …

Theory Of Equitable Quality Level And Errors- Areas Under The Operating Characteristic Curves Of Lot Acceptance Sampling Plans., M. T. Subramanya Dr.

Doctoral Theses

This monograph deals with the theory of Equitable Quality Level and error-areas under the operating characte- ristic curves of lot acceptance sampling plans. A brief sumnary of the contents is given in Sections 1.2b (pages 15-16) and 2.9 (pages 107-111). A fairly good idea of the topics considored in this monograph can be obtained from the detailod list of contents given in pagos iv- xi.Most of the results given in the monograph are new and have not been published anywhe re. They are based on author's own research work and are contained in his doctoral dissertation.Most of the work connected …

Volcanic Rocks Associated With The Western Part Of The Mogollon Plateau Volcano-Tectonic Complex, Southwestern New Mexico, Rodney Charles Rhodes

Earth and Planetary Sciences ETDs

An area of approximately 450 square miles was mapped on a reconnaissance basis, covering part of the western half of the Mogollon Plateau volcano-tectonic complex. This report deals with the geology of the area and its relationship to the regional volcano-tectonic structure of the Mogollon Plateau.

Existence Of Fixed Poles And Their Role In Conspiracy, Paul Finkler

Paul Finkler Papers

It is shown that unitarity allows fixed poles at certain nonsense points of either right or wrong signature. The conditions for the existence of these poles are found. These conditions are then used to locate the poles allowed in hadronic reactions. Possible mechanisms for the poles are considered. It is then argued that fixed poles provide the most natural explanation of the conspiracy phenomenon.

Ua11/2 Planetarium Program To Describe The Moon In February Sessions, Wku Public Affairs

WKU Administration Documents

Press release entitled: Planetarium Program to Describe the Moon in February Sessions.

Water Resources News, Volume 2, No. 2, February 1970

Water Current Newsletter

Evaporation Reduction
National Science Foundation Announces a New Program
The Universities and Environmental Quality
Guidelines Will Be Issued for Federal Programs Affecting the Environment
Conservation and the Environment - Big Political Issue?
National Land Use Policy Act of 1970
The Safety of Community Water Supply Systems
River System Engineering - Summer Short Course
OWRR Holds Fifth Annual Water Resources Research Conference
Environmental Health Service Organized at HEW
Algae-Eating Fish - A Possible Way to Control Eutrophication?
Resources for the Future Considerse Non-Monetary Benefits for Conservation Goals
Agreement to Require Discharges of Wastes Into the Nation's Waterways to Reveal Their Pollution …

An Example On Maximum Likelihood Estimates, Leonard W. Deaton

Statistics

No abstract provided.

Fermi Surface Of Ausb2. I. High-Field Galvanomagnetic Effects, J. Ahn, David J. Sellmyer

David Sellmyer Publications

High-field galvanomagnetic effects have been investigated in the pyrite structure metallic compound AuSb₂ in fields up to 150 kG. The resistance ratios of the samples [ρ(295°K)/ρ(4.2°K)] were as high as 520. The results indicate that AuSb₂ is a compensated metal and that its Fermi surface supports open orbits in 〈100〉, 〈110〉, and 〈112〉 directions. At fields higher than about 50 kG, the tendency toward saturation caused by the open orbits changes to a field dependence approaching quadratic, and rather large-amplitude quantum oscillations in the magnetoresistance appear. This behavior is explicable in terms of a loss of the open …

Terminal Talk - The Wofford Connection - February 1970, Wofford College Computer Center

Terminal Talk

No abstract provided.

Time Saving In Measurement Of Nmr And Epr Relaxation Times, David C. Look, Donald R. Locker

Physics Faculty Publications

By producing a train of absorption or dispersion signals (continuous‐wave magnetic resonance) or free induction decays (pulsed magnetic resonance) it is possible to save time in spin‐lattice relaxation measurements due to the fact that it is not necessary to wait for equilibrium magnetization before initiating the train. The relaxation time may be calculated from the train according to a simple rapidly converging iteration.