Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 37441 - 37470 of 42772

Full-Text Articles in Entire DC Network

Center For Sustainable Agricultural Systems Newsletter, May/June 1993 May 1993

Center For Sustainable Agricultural Systems Newsletter, May/June 1993

Center for Sustainable Agricultural Systems: Newsletter (1993–2000)

Contents:

Sustainable Ag Tour

ERS Sustainable Ag Initiative

Highlights from "Farm Bill" Seminar Series

Rural Policy Symposium Proceedings

SARE Grant Programs

SARE Funding - Chapters 2 & 3

Sustainable Agriculture Directory of Expertise

Integrated Farm Projects - ARDC

Study of Farm Family Health

Conference on Science and Sustainability


Wildlife Damage News, Volume 4, Spring 1993 May 1993

Wildlife Damage News, Volume 4, Spring 1993

Wildlife Damage News

CONTENTS:
Lyme Disease & Norway Rat Control in Maine
Number of Deer Killed by Motorists in NY Increases in 1992
Meetings of Interest
11th Great Plains Wildlife Damage Control Workshop Highlights
Wildlife Society Wildlife Damage Management Working Group Forms
Teaching Materials for Wildlife Damage Management
Coyote Urine Translocated by Flora
Current Literature
Goose Management in Urban Areas
Two New Damage-Management Publications


Canadian Cooperative Wildlife Health Centre Newsletter, Volume 2-2, May 1993 May 1993

Canadian Cooperative Wildlife Health Centre Newsletter, Volume 2-2, May 1993

Canadian Cooperative Wildlife Health Centre: Newsletters and Publications

Work Underway at CCWHC Wildlife Pathologists at CCWHC An Outbreak of Duck Plague in New York State Snowy Owl Outbreak on the PrairiesCluster of bat rabies in red foxes in Prince Edward Island Adenoviral encephalitis in a red fox Carbofuran poisoning in herring gulls in Nova Scotia Protostrongylid infection in a Newfoundland moose Lead Poisoning in two Blue Jays Adrenal lesions in St. Lawrence Estuary beluga whale Cancer in a Red-Tailed Hawk and a Northern Goshawk Winter Mortality in Birds in Ontario Lead Poisoning in Waterfowl Sarcoptic Mange Crop necrosis and impaction in lesser Canada geese Black-tailed prairie dog mortality …


The Probe, Issue 132 - May 1993 May 1993

The Probe, Issue 132 - May 1993

The Probe: Newsletter of the National Animal Damage Control Association

CONTENTS:
Choosing a Career as a Wildlife Biologist
CALENDAR OF UPCOMING EVENTS
Arizona Legislators Reject Trap Ban
Dogs Decimate Ostriches
River Otters Impact Crawfish Producers
Rats Damage Automotive Wiring
Survey Reveals Animal Activists' Attitudes Toward ADC
USU Needs Help With Wildlife Damage Management Library


Diet And Colon Cancer Risk In The Population Of Thailand, Nithat Sirichotiratana May 1993

Diet And Colon Cancer Risk In The Population Of Thailand, Nithat Sirichotiratana

Loma Linda University Electronic Theses, Dissertations & Projects

Epidemiological studies have emphasized environmental influences, especially a diet high in animal fat and low in fiber, as major risk factors for colon cancer. In order to examine the relationship between dietary fat and fiber and occurrence of colon cancer, patient medical records from the National Cancer Institute between 1981-1991 were used for the first hospital-based case-control study of diet and colon cancer in Thailand. These records included a total of 168 cases and 357 controls. Data on the frequency consumption of various food items were obtained by using an existing food frequency questionnaire, completed as part of patient’s history …


The Annual Meeting Of The Iowa Academy Of Science April 23-24, 1993 [Program, 105th Meeting], Iowa Academy Of Science Apr 1993

The Annual Meeting Of The Iowa Academy Of Science April 23-24, 1993 [Program, 105th Meeting], Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Program Summary --- 5
General Session Speakers --- 9
Awards --- 12
Distinguished Iowa Science Teaching --- 12
Symposia Programs --- 13
STN Workshop --- 14
Poster Session --- 15
Campus Map --- Centerfold
Section Programs --- 18
Agricultural Sciences --- 18
Anthropology --- 18
Botany --- 19
Cellular & Molecular Biology --- 21
Chemical Education --- 24
Chemistry, Inorganic --- 24
Chemistry, Organic --- 26
Conservation --- 27
Earth Science Teaching --- 29
Elementary Science Teaching --- 29
Engineering --- 29
Geology --- 31
Linguistics --- 32
Nursing --- 32
Physics --- 33
Physiology --- 34
Psychology --- …


Preliminary Public Health Assessment: Petrochem Recycling Corporation/Ekotek Salt Lake City, Salt Lake County, Utah, Agency For Toxic Substances And Disease Registry, Divisoin Of Health Assessment And Consultation Apr 1993

Preliminary Public Health Assessment: Petrochem Recycling Corporation/Ekotek Salt Lake City, Salt Lake County, Utah, Agency For Toxic Substances And Disease Registry, Divisoin Of Health Assessment And Consultation

All U.S. Government Documents (Utah Regional Depository)

The Petrochem/EkoTek site was operated by several owners as a refinery from 1953 until 1978 and as a hazardous waste storage treatment facility and a petroleum recycling facility from 1978 through 1988. Removal of essentially all petroleum products and hazardous wastes in tanks and drums was accomplished from 1988 - 1991. The process that will lead to the complete clean-up of the facility is ongoing. The site was added to the National Priorities List (NPL) in October 1992. Exposure of humans to contaminants in soil and air is thought to have occurred near Petrochem. The source(s) of those contaminants in …


John Muir Newsletter, Spring 1993, John Muir Center For Regional Studies Apr 1993

John Muir Newsletter, Spring 1993, John Muir Center For Regional Studies

Muir Center Newsletters (1981-2015)

John Muir Newsletter spring 1993 university of the pacific volume 3, number 2 1993 EARTH DAY CELEBRATES TH MUIR IMAGE by Janene Ford On a clear, sunny spring day the Earth Day Conservation Fair in Sacramento attracted thousands of people including large groups of school children. Sponsored by the California Department of Conservation, many organizations were invited to participate by setting up booths in front of the Capitol showing various aspects of recycling, alternative energy, conservation, and other reflections on "The Muir Image." The University of the Pacific, the John Muir National Historical Site, the Sierra Club and a number …


Focus On Phosphorus: Arkansas Water Resources Center Research Conference, Kenneth F. Steele Apr 1993

Focus On Phosphorus: Arkansas Water Resources Center Research Conference, Kenneth F. Steele

Arkansas Water Resources Center Technical Reports

No abstract provided.


Wildlife Health Centre Newsletter, Volume 1-2, Spring 1993 Apr 1993

Wildlife Health Centre Newsletter, Volume 1-2, Spring 1993

Canadian Cooperative Wildlife Health Centre: Newsletters and Publications

Wildlife Disease Investigation Manual
Directory of Wildlife Health Expertise
Our Information Specialist
Newfoundland and Labrador
Nova Scotia/New Brunswick
PEI
Pathology and Toxicology of Beluga Whales from the St. Lawrence Estuary, Quebec, Canada. Past, Present and Future.
Heartworm in Quebec Wildlife
Lyme borreliosis (Lyme Disease)
Salmonellosis in Pine Siskins in B.C.
Polioencephalomalacia (PEM) in White-tailed deer and Pronghorns
Canine Parvovirus (CPV) Enteritis in Two Coyotes
News from the National Wildlife Health Research Center, U.S. Fish & Wildlife Service, Madison, Wisconsin. Contributed by T. Roffe.


The Probe, Issue 131 - April 1993 Apr 1993

The Probe, Issue 131 - April 1993

The Probe: Newsletter of the National Animal Damage Control Association

CONTENTS:
A Role for Fertility Control Wildlife Management in Australia?
CALENDAR OF UPCOMING EVENTS
No Predator Control on New Mexico State Lands
Coyotes Continue to Plague Petowners
Lab Animals Get Stiffer Protection
New Hampshire Jogger Suffers Black Bear Attack
Fertility Control Wildlife Management in Australia
Tree Squirrel Video Available (FREE)
Faunally-Related Damage in a Production System
NADCA Annual Meeting
Hats, Hats, Hats...
Cormorant Scientific Symposium
PROBE Questionnaire Results


Millikan Lecture 1992: Hypermedia And The Knowing Of Physics: Standing Upon The Shoulders Of Giants, Robert Fuller Apr 1993

Millikan Lecture 1992: Hypermedia And The Knowing Of Physics: Standing Upon The Shoulders Of Giants, Robert Fuller

Robert G. Fuller Publications

Hypermedia is defined and its roots briefly discussed. Models of knowing physics and of intrinsically motivating instruction are presented. Uses of hypermedia to increase the knowing of physics and the motivation of learners are proposed.


Comparison Of Imsl/Idl With The Imsl Math Library And Exponet Graphics, Xingkang Fu, John R. Rice Apr 1993

Comparison Of Imsl/Idl With The Imsl Math Library And Exponet Graphics, Xingkang Fu, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.


Installing Photographic Rangeland Monitoring Sites In Grassland Environments, Andrew Mclaughlin Apr 1993

Installing Photographic Rangeland Monitoring Sites In Grassland Environments, Andrew Mclaughlin

Agriculture reports

Photographic monitoring offers pastoralists an inexpensive management tool that can help to better understand how varying management practices affect the rangeland. Using a monitoring system also helps take the guesswork out of knowing what changes to vegetation and soils have occurred over time.


Chlorination Products Of Glycylphenylalanine In Model Solutions And A Wastewater, Daniel J. Keefe Apr 1993

Chlorination Products Of Glycylphenylalanine In Model Solutions And A Wastewater, Daniel J. Keefe

Chemistry & Biochemistry Theses & Dissertations

Model solutions of the dipeptide glycylphenylalanine were chlorinated to five different chlorine-to-amino nitrogen (Cl/N) mole ratios and analyzed after 30 min by high performance liquid chromatography. At mole ratios of ≤ 1, N-chloroglycylphenylalanine (I) appeared to be the only major product. At a mole ratio ≤ 2, N, N-dichloroglycylphenylalanine (II) was the only product. Compound II decomposes in model solutions (t1/2= 6.4 hr) at pH 7.0 to form a compound tentatively identified as an H-chloroaldimine (III). Compound III in turn decomposes (t1/2= 36 hr) in model solutions at pH 7. o to (IV) . From 13 …


Understanding Groundwater Starts With The Rocks: Geologic Fralnework, Groundwater Occurrence And Irrigation Development In Nebraska, Robert F. Diffendal Jr. Mar 1993

Understanding Groundwater Starts With The Rocks: Geologic Fralnework, Groundwater Occurrence And Irrigation Development In Nebraska, Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

Nebraska is blessed with abundant groundwater. This groundwater is found beneath much of the state, principally in the sediments and sedimentary rocks that blanket the ancient and largely crystalline rocks geologists call Precambrian (see block diagram of Nebraska's geology, p. 50). These younger deposits contain pieces of evidence such as fossils and sedimentary features that reveal the tremendous changes in the environment that have gone on over the last 570 million years, during which these deposits accumulated. Change is the name of the game in geologic history, just as it is in human history. Fundamental changes in geologic history across …


The Probe, Issue 130 - March 1993 Mar 1993

The Probe, Issue 130 - March 1993

The Probe: Newsletter of the National Animal Damage Control Association

CONTENTS:
PRED-X®Ear-Tags Prove Disappointing to Producers
CALENDAR OF UPCOMING EVENTS
Grackles Draw Ire and Often Fire of Texas Mayor
Dominican Parrots Prove to be Problems—Ideas Needed
Deer Collision Insurance? Good Idea Falls Flat
Selective Raccoon Set Avoids Cats
Message from the President
Publications Available
Teaching Materials for Wildlife Damage Management
In My Opinion
NADCA Annual Meeting


Center For Sustainable Agricultural Systems Newsletter, March/April 1993 Mar 1993

Center For Sustainable Agricultural Systems Newsletter, March/April 1993

Center for Sustainable Agricultural Systems: Newsletter (1993–2000)

Contents:

New Look for the Newsletter

Policy Options for 1995 Farm Bill

New CSAS Paper Series

Proceedings of "Farm Bill" Seminar Series

Sustainable Agriculture Initiative National Status Report (USDA)

Leopold Center Progress Report

NSAS and OCIA Annual Meetings

Nutrient Management for Water Quality, The Iowa Experience

New Book Series: Our Sustainable Future

List of Funding Sources Available

Cosponsorship of Seminar Speakers

CSAS Advisory Committee Meeting

Gell-Mann Presents Visions of Sustainable World

Next Generation of U.S. Ag. Conservation Policy


Salinity - An Albany Perspective, Mandy Curnow Mar 1993

Salinity - An Albany Perspective, Mandy Curnow

Natural resources published reports

This booklet has been put together as an introduction to salinity in the Albany, Denmark, and Plantagenet districts. As much local information has been included as possible, so that the booklet will relate to your situation. The booklet looks at the causes of salinity and bow to recognise it. Included also, are methods of measuring salt in water and soil, both in the laboratory and the field. Methods of controlling salinity and reversing rising ground waters are not covered as there are already so many publications dealing with this topic.

Most agricultural areas experience some Ievel of salinity. Controlling salinity, …


Back-Face Culling Applied To Collision Detection Of Polyhedra, George Vanĕček Mar 1993

Back-Face Culling Applied To Collision Detection Of Polyhedra, George Vanĕček

Department of Computer Science Technical Reports

No abstract provided.


An Immersive Synthetic Environment For Observation And Interaction With A Large Volume Of Interest, Rex G. Haddix Iii Mar 1993

An Immersive Synthetic Environment For Observation And Interaction With A Large Volume Of Interest, Rex G. Haddix Iii

Theses and Dissertations

This thesis addresses the initial development of a Synthetic Battlebridge System designed to provide the user with a synthetic three- dimensional view of moving and stationary vehicles dispersed over a hundred thousand cubic mile volume. The system contains provisions to allow a user to view the battlefield either in the Polhemus LookingGlass™ fiber optic based high resolution head mounted display, a standard CRT, or through the Fake Space Labs BOOM2M™ high resolution monochrome display. Users can also video tape a session in the Synthetic Battlebridge System. A voice recognition system provides user interaction to the Synthetic Battlebridge System. Using a …


The Prairie Naturalist Volume 25. No. 1. March 1993 Mar 1993

The Prairie Naturalist Volume 25. No. 1. March 1993

The Prairie Naturalist

Paul B. Kannowski, Editor

Nikki R. Seabloom, Assistant Editor

Douglas H. Johnson, Book Review Editor

CONTENTS

FACTORS AFFECTING BIRD COLONIZATION OF RESTORED WETLANDS ▪ L. M. Hemesath and J. J. Dinsmore

RESPONSE OF DABBLING DUCKS TO EARLY-SPRING PARTIAL DRAWDOWN ON LAKE ERIE MARSHES ▪ T. Z. Riley and T. A. Bookhout

OVER-WATER NESTING BY DUCKS IN NORTHEASTERN SOUTH DAKOTA ▪ . K. L. Solberg and K. F. Higgins

ADDITIONAL MOUNTAIN PLOVER SIGHTINGS IN MONTANA ▪ D. M. Prellwitz

SMALL MAMMALS OF WOODED HABITATS OF THE KONZA PRAIRIE RESEARCH NATURAL AREA, KANSAS ▪ D. W. Kaufman, G. A. Kaufman, and E. …


An Intelligent Approach To Discrete Sampling Of Parametric Curves, Chaman Sabharwal Mar 1993

An Intelligent Approach To Discrete Sampling Of Parametric Curves, Chaman Sabharwal

Computer Science Faculty Research & Creative Works

In graphics and animation applications, two of the problems are: (1) representation of an analytic curve by a discrete set of sampled points and (2) determining the similarity between two parametric curves. It is necessary to measure the accuracy of approximation and to have a metric to calculate the disparity between two parametric curves. Both of these problems have been associated with the reparameterization of the curves with respect to arc length. One of the methods uses Gaussian Quadrature to determine the arc length parameterization [Guenter and Parent 1990], while another interesting technique is a simple approximation method [Fritsch and …


Producing And Marketing Kentucky Hay - A Challenge, Ed Logsdon Feb 1993

Producing And Marketing Kentucky Hay - A Challenge, Ed Logsdon

Kentucky Alfalfa and Stored Forage Conference

Many of you probably are aware that Kentucky's commodity organizations are working with UK, the Agriculture Department and Farm Bureau in developing a plan to improve farm income in the state. This is a very ambitious project involving more than 40 farm organizations, including the Kentucky Forage and Grassland Council. This group has set a lofty goal of attempting to raise gross farm sales in the state from its current $3 billion level to around $5 billion by the turn of the century.


Grazing Alfalfa — National Perspective, Warren C. Thompson Feb 1993

Grazing Alfalfa — National Perspective, Warren C. Thompson

Kentucky Alfalfa and Stored Forage Conference

The production of alfalfa specifically for grazing is a fairly new practice. But now, farmers all around the USA are beginning to look toward alfalfa for a long living legume to increase yield, quality, and reliability all during the growing and grazing seasons. They also are looking for ways to reduce the cost of harvest, equipment, and storage costs, as well as weather-related harvest losses, and in time, reduced fertilizer costs.


Grazing Alfalfa — State Perspective, W. Roy Burris, Garry D. Lacefield Feb 1993

Grazing Alfalfa — State Perspective, W. Roy Burris, Garry D. Lacefield

Kentucky Alfalfa and Stored Forage Conference

Alfalfa has been grown in Kentucky for many years, but in the last decade, its acreage has increased dramatically- from 208,000 in 1978 to 350,000 in 1981 (Ky. Agri. Statistics Service). Alfalfa is generally thought of as a hay crop but the practice of grazing alfalfa has received considerable attention recently. Much of this interest was generated by "Graze-More-Beef" demonstrations which have been conducted in the state. Demonstrations in which alfalfa was grazed averaged 791 pounds per acre during 1986-1988. Alfalfa's ability to withstand dry weather and its excellent nutritional qualities make it an attractive grazing alternative to fescue - …


Do's And Don'ts Of Alfalfa Grazing, Ken Johnson Feb 1993

Do's And Don'ts Of Alfalfa Grazing, Ken Johnson

Kentucky Alfalfa and Stored Forage Conference

I usually start grazing in April when alfalfa is about 10 inches tall. I like to start with enough cattle to graze a paddock clean in two to five days, then move to another paddock, returning to re-graze in about 35 days. I usually need at least eight paddocks in the system. You must rotate cattle on Alfalfa for the stand to persist. It will take seven or eight head of 500 pound calves per acre to keep up with alfalfa growth in the spring. Part of the calves will need to be removed in June and maybe some more …


Grazing Alfalfa — County Perspective, Steve Osborne Feb 1993

Grazing Alfalfa — County Perspective, Steve Osborne

Kentucky Alfalfa and Stored Forage Conference

Often the difference between successful farming operations and others is the ability of the producers to manage the available resources to their advantage. The rolling topography and plentiful supply of livestock water in Monroe County is well suited to forage production. The purpose of this program is to introduce new forage species, improve forage production, and increase producer profits.


Grazing Alfalfa — An Overview, Garry D. Lacefield, W. Roy Burris Feb 1993

Grazing Alfalfa — An Overview, Garry D. Lacefield, W. Roy Burris

Kentucky Alfalfa and Stored Forage Conference

Alfalfa is the most important forage legume grown in the United States. Grown over a wide range of soil and climatic conditions it has the highest yield potential and feeding value of all perennial forage legumes. This versatile crop can be used for hay, pasture, silage, green-chop, pellets, cubes and soil improvement. Because of its many merits, especially yield, quality and versatility, it can be used successfully in many animal feeding programs.

Grazing alfalfa has not been practiced to any great extent in the U.S., but has been done extensively in other countries. Research and producer experience has shown excellent …


Quality From The Seed To The Sale To The Animal, Jimmy C. Henning, Garry D. Lacefield Feb 1993

Quality From The Seed To The Sale To The Animal, Jimmy C. Henning, Garry D. Lacefield

Kentucky Alfalfa and Stored Forage Conference

Forages in Kentucky have been valued at over $700 million annually. This figure combines receipts from cash hay sales to indirect value from the portion of beef, dairy, sheep, and horse receipts that are attributable to pasture and stored forages. However, the key to the maintaining and even increasing the value of forages to Kentucky lies in Quality: A) Quality of seed B) Quality as it relates to sales, and C) Quality as it relates to the animal.