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Articles 285721 - 285750 of 303799

Full-Text Articles in Physical Sciences and Mathematics

Dispersal And Some Implications For Control Of The California Ground Squirrel, Dennis C. Stroud Feb 1982

Dispersal And Some Implications For Control Of The California Ground Squirrel, Dennis C. Stroud

Vertebrate Pest Conference Proceedings: 10th (1982)

Data from current research and from the literature indicate that a knowledge of dispersal of the California ground squirrel can help to develop control strategy. An understanding of the rate and extent of dispersal may help reduce poor results due to patchy control. A knowledge of dispersal distance can help to determine the size of a buffer zone of control which may reduce the rate of reinvasion. The seasonal timing of dispersal is predictable in the California ground squirrel, and this can help to establish follow-up control.

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Mountain Lion Predation On Domestic Livestock In Nevada, H. Russell Suminski Feb 1982

Mountain Lion Predation On Domestic Livestock In Nevada, H. Russell Suminski

Vertebrate Pest Conference Proceedings: 10th (1982)

The mountain lion has long been considered a serious predator on domestic livestock, primarily sheep, in the state of Nevada. For the past five years (FY77-81), documented losses to lions have averaged 375 animals. While this number is not large, most losses are sustained by only a few individual livestock operators, and the losses constitute a serious economic hardship for these individuals. An average of 23 lions have been taken in response to livestock depredation complaints during each of these five years. Controlling livestock loss to mountain lions is the responsibility of the Animal Damage Control branch of the U.S. …

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A Comparison Of Selected Rodenticides For The Control Of The Common Valley Pocket Gopher (Thomomys Bottae), Barry R. Tickes, Lloyd K. Cheathem, John L. Stair Feb 1982

A Comparison Of Selected Rodenticides For The Control Of The Common Valley Pocket Gopher (Thomomys Bottae), Barry R. Tickes, Lloyd K. Cheathem, John L. Stair

Vertebrate Pest Conference Proceedings: 10th (1982)

The common valley pocket gopher (Thomomys bottae) has become a serious agricultural pest in certain regions of the Lower Colorado River Basin. The mechanical burrow-builder is the most economical and effective method of controlling this pest although many growers and some researchers have reported less-than-satisfactory results when using this technique with currently available rodenticides. Six formulations of three toxicants including strychnine, zinc phosphide and diphacinone were applied with the burrow-builder to assess their efficacy. Results indicated that negligible control is achieved with 0.35 and 0.5% strychnine although these are the most commonly used formulations in Arizona. Diphacinone also produced negligible …

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An Ipm Approach To Rodent Control On Midwestern Farms, Robert M. Timm Feb 1982

An Ipm Approach To Rodent Control On Midwestern Farms, Robert M. Timm

Vertebrate Pest Conference Proceedings: 10th (1982)

An Integrated Pest Management project in Nebraska is assisting fanners, particularly pork producers, in controlling damage caused by Norway rats, house mice, house sparrows, and starlings. A survey of pork producers to (1) determine the incidence of certain rodent and bird pests, (2) identify factors which contribute to pest damage and control, and (3) evaluate the project's impact, has been completed. Survey results are summarized. Continuing efforts to document economic damage caused by vertebrate pests are expected to enhance the program's impact.

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Reducing Starling Depredations At Livestock Feeding Operations Through Changes In Management Practices, Daniel J. Twedt, James F. Glahn Feb 1982

Reducing Starling Depredations At Livestock Feeding Operations Through Changes In Management Practices, Daniel J. Twedt, James F. Glahn

Vertebrate Pest Conference Proceedings: 10th (1982)

Economic losses due to starling depredations at livestock feeding operations can be reduced by implementing management practices that limit access to or reduce consumption of grain products by starlings. Current farm management practices that reduce losses to birds are reviewed and alternate practices suggested. Management practices suggested include physical separation of feed from starlings, use of feed types that reduce the rate of consumption by starlings, and use of feeds that are either unpalatable or not physiologically usable by starlings. The reduction in starling numbers at feedlots resulting from these management practices may alleviate economic losses with a concomitant lesser …

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The Use Of Fences For Predator Damage Control, Dale A. Wade Feb 1982

The Use Of Fences For Predator Damage Control, Dale A. Wade

Vertebrate Pest Conference Proceedings: 10th (1982)

The development of exclusion fencing has been extensive in Australia in attempts to reduce losses of crops and livestock to rabbits (Oryctolagus cuniculus), dingos (Canis familiaris Var. dingo) and other species. Restrictions on other damage control methods have led to increased efforts in the United States to utilize such fences for protection of crops and livestock from dogs (Canis familiaris), coyotes (Canis latrans) and other species. Electric fences have occasionally been used to protect apiaries from black bears (Ursus americanus) and to protect some wildlife species from carnivores. Varied fence types include conventional net-wire or combinations of net and barbed …

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Assessment, Understanding And Management Of Blackbird Agriculture Interactions In Eastern Canada, Patrick J. Weatherhead Feb 1982

Assessment, Understanding And Management Of Blackbird Agriculture Interactions In Eastern Canada, Patrick J. Weatherhead

Vertebrate Pest Conference Proceedings: 10th (1982)

The major results of recent research on the problem of red-winged blackbird (Agelaius phoeniceus) damage to field corn (Zea mays) in eastern Canada are reviewed. In the area of damage assessment, an indirect approach relying on energetic considerations appears to provide a rapid and inexpensive means for generating reliable damage estimates. The identification of pronounced compositional changes in roost populations has provided a more accurate means for predicting the impact of any management technique relying on population reduction at roosts. Investigation of the interaction of blackbirds and insects revealed that prey species conform to general patterns of coloration, mobility and …

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Green Chopped Bait For The Control Of The Oregon Ground Squirrel, Kenneth W. Wright Feb 1982

Green Chopped Bait For The Control Of The Oregon Ground Squirrel, Kenneth W. Wright

Vertebrate Pest Conference Proceedings: 10th (1982)

In 1972 at the Fifth Vertebrate Pest Conference, my predecessor, Loring White, described "The Adaptation to a Changing Environment of the Oregon Ground Squirrel." Today, ten years later, I will bring you up-to-date on what we are doing to control this persistent ground squirrel to a point where we can keep our farming operations going in spite of this pest. Bait-shyness or poor bait acceptance has forced us to use a green bait. For efficiency, aircraft broadcasting has become the common method of application. So that you might have a better perspective of our ground squirrel operations, I will illustrate …

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Bird Problems And Their Solutions In Britain, Ernest N. Wright Feb 1982

Bird Problems And Their Solutions In Britain, Ernest N. Wright

Vertebrate Pest Conference Proceedings: 10th (1982)

The background and organization of research on bird pests in Britain are described and the main projects are outlined. Work is currently concentrated on bullfinches, starlings, rooks and woodpigeons together with behavioral studies aimed at developing better bird scarers.

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Estimation Of A Common Mean And Recovery Of Inter Block Information., Chunni Gopal Bhattacharya Dr. Feb 1982

Estimation Of A Common Mean And Recovery Of Inter Block Information., Chunni Gopal Bhattacharya Dr.

Doctoral Theses

The problem of conbining several estimates of an unknown quentity to obtain an eetimete of Improved precieion arises in meny spheres of application of etatistics, To begin with let us consider the following simple inadelt1 =+4, 1- 1,...,kwhere u ie an unknown quantity and e, e ere errora with a common menn zero end a common veriance o. If we make no further asoumption about the distribution of e,s, the GAuas-Markoff theorem tells us that among sll unbtaved lineer combinationa ofr ya, the least squAre estimator i * Iy /k of u hes the minimum variance. If ,s are jointly …

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Constant-Psi Constant-Delta Contour Maps: Applications To Ellipsometry And To Reflection-Type Optical Devices, A.-R. M. Zaghloul, R. M.A. Azzam Feb 1982

Constant-Psi Constant-Delta Contour Maps: Applications To Ellipsometry And To Reflection-Type Optical Devices, A.-R. M. Zaghloul, R. M.A. Azzam

Electrical Engineering Faculty Publications

Constant-psi constant-delta contour maps in the reduced angle-of-incidence-film-thickness plane that are useful in ellipsometry and in design of reflection-type optical devices are discussed. As a specific example, a contour map is given for the SiO2-Si film-substrate system at the 6328-Å He-Ne laser wavelength.

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Blueschists Discovered East Of Saros Bay In Thrace, Kâmil Şentürk, Aral I. Okay Feb 1982

Blueschists Discovered East Of Saros Bay In Thrace, Kâmil Şentürk, Aral I. Okay

Bulletin of the Mineral Research and Exploration

No abstract provided.

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Review Of Atoms And Molecules By M. Weissbluth, Anthony F. Starace Feb 1982

Review Of Atoms And Molecules By M. Weissbluth, Anthony F. Starace

Anthony F. Starace Publications

The advent of high-powered lasers and of dedicated synchrotron light sources and the needs of research in such areas as astrophysics and fusion have led to a resurgence of interest in atomic and molecular physics. Concurrently, there have been significant advances in atomic and molecular theory, not only in the ability to make more reliable numerical predictions but also in the detailed understanding of the dynamics of atomic and molecular collisions. The nonspecialist or beginning graduate student who must read the scientific journals to learn of these advances often finds that the requisite basic knowledge is extensive. Mitchel Weissbluth, whose …

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A Note On The Occurence Of Permo-Carboni Fergus In The Southeast Of Afyon Region, Bilge Eri̇şen Feb 1982

A Note On The Occurence Of Permo-Carboni Fergus In The Southeast Of Afyon Region, Bilge Eri̇şen

Bulletin of the Mineral Research and Exploration

No abstract provided.

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New Discoveries In The Mining History Of Turkey In The Neighborhood Of Gümüşköy, Kütahya, Ergün Kaptan Feb 1982

New Discoveries In The Mining History Of Turkey In The Neighborhood Of Gümüşköy, Kütahya, Ergün Kaptan

Bulletin of the Mineral Research and Exploration

No abstract provided.

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Pg - A Preprocessor Generator, John Brophy Feb 1982

Pg - A Preprocessor Generator, John Brophy

Department of Computer Science Technical Reports

No abstract provided.

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Stratigraphy Of Eocene Rocks In The Mengen (Bolu) Coal Field, Nw Anatolia, Orhan Kaya, Atife Di̇zer Feb 1982

Stratigraphy Of Eocene Rocks In The Mengen (Bolu) Coal Field, Nw Anatolia, Orhan Kaya, Atife Di̇zer

Bulletin of the Mineral Research and Exploration

No abstract provided.

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Induced Polarization Method On Lignite Prospection Of Muğla-Tinas, M. Işık Turgay Feb 1982

Induced Polarization Method On Lignite Prospection Of Muğla-Tinas, M. Işık Turgay

Bulletin of the Mineral Research and Exploration

No abstract provided.

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On The Presence Of Villania (Ammonoidea) In Turkey, Füsun Alkaya Feb 1982

On The Presence Of Villania (Ammonoidea) In Turkey, Füsun Alkaya

Bulletin of the Mineral Research and Exploration

No abstract provided.

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Regional Interpretation Of The Cenozoic Volcanism Of Si̇mav And Surrounding Area, Tuncay Ercan, Erdoğdu Günay, Mehmet Yılmaz Savaşçin Feb 1982

Regional Interpretation Of The Cenozoic Volcanism Of Si̇mav And Surrounding Area, Tuncay Ercan, Erdoğdu Günay, Mehmet Yılmaz Savaşçin

Bulletin of the Mineral Research and Exploration

No abstract provided.

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Structural Investigation Of Guleman (Elaziğ) Ophiolite, Yusuf Ziya Özkan Feb 1982

Structural Investigation Of Guleman (Elaziğ) Ophiolite, Yusuf Ziya Özkan

Bulletin of the Mineral Research and Exploration

No abstract provided.

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Stratigraphy And Structure Of The Upper Cretaceous And Paleogene Rocks To The North Of Bolu, Orhan Kaya, Atife Di̇zer Feb 1982

Stratigraphy And Structure Of The Upper Cretaceous And Paleogene Rocks To The North Of Bolu, Orhan Kaya, Atife Di̇zer

Bulletin of the Mineral Research and Exploration

No abstract provided.

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Petrology And Interpretation Of The Origin Of Quaternary Volcanics In The Datça Peninsula, Tuncay Ercan, Erdoğdu Günay, Halil Baş, Bülent Can Feb 1982

Petrology And Interpretation Of The Origin Of Quaternary Volcanics In The Datça Peninsula, Tuncay Ercan, Erdoğdu Günay, Halil Baş, Bülent Can

Bulletin of the Mineral Research and Exploration

No abstract provided.

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Sedimentology Of The Miocene Gülekdağ Carbonate Sequence, Souht Of Pozanti (Adana - Turkey), Şuayip Üşenmez Feb 1982

Sedimentology Of The Miocene Gülekdağ Carbonate Sequence, Souht Of Pozanti (Adana - Turkey), Şuayip Üşenmez

Bulletin of the Mineral Research and Exploration

No abstract provided.

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The Geology Of The Bodrum Peninsula, Tuncay Ercan, Erdoğdu Günay, Ahmet Türkecan Feb 1982

The Geology Of The Bodrum Peninsula, Tuncay Ercan, Erdoğdu Günay, Ahmet Türkecan

Bulletin of the Mineral Research and Exploration

No abstract provided.

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Volume 6, Numbers 1 & 2 (February & March 1982), The Solar Ocean Energy Liaison Feb 1982

Volume 6, Numbers 1 & 2 (February & March 1982), The Solar Ocean Energy Liaison

The OTEC Liaison

Note that this issue should be Numbers 2 & 3, not Numbers 1 & 2.

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Rapid Method Of Estimating The Phosphorous Sorption Capacity Of Soils, A, G.F. Griffin Feb 1982

Rapid Method Of Estimating The Phosphorous Sorption Capacity Of Soils, A, G.F. Griffin

Storrs Agricultural Experiment Station

No abstract provided.

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Structure-Factor Measurements In 4he As A Function Of Density, Robert Hallock, H. N. Robkoff Feb 1982

Structure-Factor Measurements In 4he As A Function Of Density, Robert Hallock, H. N. Robkoff

Robert Hallock

Measurements of the structure factor S(k) for 4He are reported as a function of pressure at 1.67, 2.20, and 4.24 K from saturated vapor pressure to 25 atm. The liquid structure factor is seen to sharpen and increase in amplitude with an increase in pressure at each of the temperatures studied. Comparison is made to previous results obtained by the technique of neutron scattering as well as to the theoretical predictions of Chang and Campbell and of Whitlock et al. The pair correlation function g(r) is obtained from the liquid structure factor by means of a Fourier transform, and comparison …

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Monthly Planet, 1982, February, Jim Springer, Huxley College Of The Environment, Western Washington University Feb 1982

Monthly Planet, 1982, February, Jim Springer, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.

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Stratigraphy And Sedimentary Evolution Of The Ne Antalya Complex: Isparta Province, Turkey, J.W.F. Waldron Feb 1982

Stratigraphy And Sedimentary Evolution Of The Ne Antalya Complex: Isparta Province, Turkey, J.W.F. Waldron

Bulletin of the Mineral Research and Exploration

No abstract provided.

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