Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (8179)
- University of Kentucky (5110)
- Utah State University (1544)
- Department of Primary Industries and Regional Development, Western Australia (1169)
- Old Dominion University (932)
-
- University of South Florida (829)
- University of Arkansas, Fayetteville (670)
- Nova Southeastern University (633)
- Portland State University (606)
- Louisiana State University (593)
- University of Nevada, Las Vegas (583)
- Singapore Management University (565)
- University of Colorado Law School (525)
- University of Northern Iowa (500)
- Western Kentucky University (445)
- TÜBİTAK (441)
- SIT Graduate Institute/SIT Study Abroad (424)
- University of Texas Rio Grande Valley (405)
- South Dakota State University (402)
- Missouri University of Science and Technology (378)
- Claremont Colleges (355)
- City University of New York (CUNY) (349)
- Brigham Young University (342)
- California Polytechnic State University, San Luis Obispo (326)
- Clemson University (310)
- Technological University Dublin (302)
- Chulalongkorn University (301)
- Wright State University (301)
- University of Texas at El Paso (285)
- Edith Cowan University (280)
- Keyword
-
- Western Australia (722)
- Climate change (521)
- Sustainability (384)
- Conservation (355)
- Grazing (334)
-
- Water quality (324)
- United States (268)
- Machine learning (259)
- Biodiversity (241)
- Management (236)
- Ecology (233)
- Invasive species (231)
- Agriculture (228)
- Environment (227)
- California (204)
- Sheep (189)
- Chemistry (185)
- Education (179)
- Natural resources (179)
- Animals (176)
- Water (176)
- Cattle (175)
- Artificial intelligence (174)
- Nitrogen (172)
- Fisheries (165)
- Soil (161)
- Drought (160)
- Utah (159)
- Livestock (158)
- Nebraska (156)
- Publication Year
- Publication
-
- IGC Proceedings (1977-2023) (4103)
- United States Department of Agriculture Wildlife Services: Staff Publications (1474)
- Theses and Dissertations (1135)
- Electronic Theses and Dissertations (789)
- School of Natural Resources: Faculty Publications (607)
-
- Research Collection School Of Computing and Information Systems (500)
- USF Tampa Graduate Theses and Dissertations (422)
- Independent Study Project (ISP) Collection (403)
- Great Plains Wildlife Damage Control Workshop Proceedings (365)
- United States Geological Survey: Staff Publications (355)
- Faculty Publications (339)
- Theses (337)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (306)
- Graduate Theses and Dissertations (295)
- Masters Theses (295)
- LSU Master's Theses (283)
- Dissertations (260)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (259)
- Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298 (258)
- United States Department of Commerce: Staff Publications (254)
- The Prairie Naturalist (253)
- The Probe: Newsletter of the National Animal Damage Control Association (242)
- Chulalongkorn University Theses and Dissertations (Chula ETD) (238)
- Journal of the Iowa Academy of Science: JIAS (238)
- International Journal of Speleology (235)
- Honors Theses (234)
- LSU Doctoral Dissertations (234)
- Open Access Theses & Dissertations (230)
- Turkish Journal of Chemistry (228)
- Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications (224)
- Publication Type
- File Type
Articles 42241 - 42270 of 42619
Full-Text Articles in Entire DC Network
Rural Mail Carrier Survey- Spring 1955, Dan Heyl, J. Henry Sather
Rural Mail Carrier Survey- Spring 1955, Dan Heyl, J. Henry Sather
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
To obtain extensive population data on pheasants, sharp-tailed grouse, prairie chickens, bobwhite quail, and deer.
Federal Aid In Wildlife Restoration, Ronald A. Ryder
Federal Aid In Wildlife Restoration, Ronald A. Ryder
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
This report represents a compilation, analysis and summarization of data collected on the South Platte Management Area and deals primarily with game bird data collected by personnel of Project W-37-R. History, general description, and methods of operation are discussed, and recommendations for future operations given.
Briefly, the South Platte Management Area is located in Logan and Sedgwick counties, comprising over 11, 400 acres of state-owned land in four separate segments. The largest segment (more than 12,000 acres of deeded and leased land) lies along the South Platte River from Proctor to Red Lion. This, and a second area of 240 …
Amount And Chemical Composition Of The Organic Matter Contributed By Overstory And Understory Vegetation To Forest Soil, David Robert Main Scott
Amount And Chemical Composition Of The Organic Matter Contributed By Overstory And Understory Vegetation To Forest Soil, David Robert Main Scott
Yale School of the Environment Bulletin Series
No abstract provided.
38th Annual Meeting, 1954. Abstracts Of Papers, Academy Editors
38th Annual Meeting, 1954. Abstracts Of Papers, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Volume 1, Number 2 - May 1954
The Entropy
The Entropy (also published as the Providence College Journal of Physics and Chemistry) was an undergraduate scholarship journal published by the Phi Chi Club of Providence College. (Volume 1, Number 2 - May 1954 - 10 pages in total.)
The Monadnock Volume 28, Number 2, May 1954, Clark University Geographical Society
The Monadnock Volume 28, Number 2, May 1954, Clark University Geographical Society
The Monadnock (Clark Geographical Society)
Volume 28, Issue 2 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).
Ion Exchange Capacities Of Soils, Jeanne Ellis
Ion Exchange Capacities Of Soils, Jeanne Ellis
Student Scholarship
This study investigates the chemical and physical properties of various soil types in St. Charles County, Missouri, with a primary focus on their cation exchange capacities. The author examines how plants obtain essential nutrients through an exchange process where root hairs release hydrogen ions in trade for metallic cations like calcium, magnesium, and potassium held on the surface of clay and humus colloids. To provide a comprehensive assessment of soil productivity, the research utilizes a photoelectric colorimeter to measure seven key components: organic matter, extractable phosphorus, pH, and exchangeable hydrogen, potassium, magnesium, and calcium.
The experimental phase involved analyzing samples …
Soil Additives And Their Effect On The Yield Of Various Crops And The Physical Properties Of An Agricultural Soil, Gaylen L. Ashcroft
Soil Additives And Their Effect On The Yield Of Various Crops And The Physical Properties Of An Agricultural Soil, Gaylen L. Ashcroft
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
It is generally accepted that soil structure is very important in keeping productivity at a high level. When soils are loose and friable, mechanical impedance to root growth and seedling emergence is greatly reduced. Such soils infiltrate greater quantities of precipitation, are better aerated, and possess a more favorable temperature than puddled soils. Essential plant nutrients are also more easily available in well aggregated soil.
In the last few years, several synthetic soil additives have been placed on the market. Extravagant claims have been made about the ability of these amendments to maintain soil structure, without a sound body of …
The Effect Of Grass Reseeding In Sagebrush Lands On Sage Grouse Populations, Richard W. Trueblood
The Effect Of Grass Reseeding In Sagebrush Lands On Sage Grouse Populations, Richard W. Trueblood
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The particular purpose of this study was to determine the effects of large-scale sagebrush reseeding projects on sage grouse populations and whether such effects were partly or entirely beneficial, neutral, or detrimental to the survival of such populations.
During two seasons of field work, the studies initiated on a short-time basis had the following specific objectives:
- To compare the utilization by sage grouse of reseeded and non-reseeded lands for the seasonal activities of mating, nesting, raising a brood, fall coveying, and wintering.
- To compare the utilization by sage grouse of reseeded and non-reseeded lands for daily activities of feeding, watering, …
Aerial Survey Township Areas, Willford L. Miller
Aerial Survey Township Areas, Willford L. Miller
Other Publications in Wildlife Management
In the year 1946, two townships of experimental work in aerial censusing. technique for obtaining complete counts during the winter months.
The aerial survey proved to be very satisfactory when snow conditions are right. At I available cover must be well filled with snow, with very few bare spots in fields or other parts of the area. The birds tend to congregate on such bare places where it is very difficult to see them from the plane.
In 1951 a total of 40 townships were laid out as census plots in different parts of the state. In 1952 six new …
The Synthesis Of 10-Methyl-3, 4-Benzpyrene And 8,10-Dimethyl-3, 4-Benzpyrene, Jules Adelfang
The Synthesis Of 10-Methyl-3, 4-Benzpyrene And 8,10-Dimethyl-3, 4-Benzpyrene, Jules Adelfang
Chemistry and Chemical Biology ETDs
In 1953 Cook, Hewett, and Rieger found a highly carcinogenic hydrocarbon in coal tar. By a variety of solvent extraction methods, fractional distillation, and crystallization several pure hydrocarbons were isolated from the crude pitch. Two new pentacyclic aromatic hydrocarbons were isolated and since only small quantities of them were available it was decided to ascertain their structures by synthesis instead of degradetive experiments. The hydrocarbon samples were obtained with great difficulty from two tons of crude pitch. The problem was simplified since ten of the possible fifteen pentacyclic hydrocarbons were known. From certain similarities of these hydrocarbons to perylene its …
Geology Of The South Half Of The Meramec Spring Quadrangle, Missouri, Howard Joseph Yorston
Geology Of The South Half Of The Meramec Spring Quadrangle, Missouri, Howard Joseph Yorston
Masters Theses
"This report is a continuation of the work initiated by Mueller in his mapping of the north half of the Meramec Spring Quadrangle. The completion of this work provides not only a geologic map of the whole quadrangle but also completes the mapping of the geology of a strip of quadrangles extending from Rolla to the Mississippi River. In addition to being a step closer to the goal of complete geologic coverage for the state, this work will be of value to those concerned with the prediction of depths of wells drilled in search for water, which in view of …
The Formal Science Background Of Students Enrolled In General Science Classes In Dewitt High School, Charles O. Foreman
The Formal Science Background Of Students Enrolled In General Science Classes In Dewitt High School, Charles O. Foreman
Dissertations and Theses @ UNI
No abstract provided.
Early History Of Millard County And Its Latter-Day Saint Settlers, 1851-1912, Ladd R. Cropper
Early History Of Millard County And Its Latter-Day Saint Settlers, 1851-1912, Ladd R. Cropper
Theses and Dissertations
Millard County, Utah is located one hundred and fifty miles south of Salt Lake City in the west central part of the state. The county is bounded on the north by Juab County, on the west by Nevada, on the south by Beaver County, and on the east by Sevie, Sanpete, and Juab Counties.
There are interesting formations of extinct volcanoes. Fossils can be found and well marked evidences of an ancient lake named Bonneville.
A short account of the early explorer, Father Escalante, is given in the thesis. This tells of his travels in Millard County in the year …
The Chemistry Of Digestion, Lester B. Burrus
Economic Analysis Of Forage Production And Utilization In Dakota And Dixon Counties, Nebraska, Howard W. Ottoson
Economic Analysis Of Forage Production And Utilization In Dakota And Dixon Counties, Nebraska, Howard W. Ottoson
Nebraska Agricultural Experiment Station: Historical Research Bulletins
Soil erosion remains a serious problem on many Nebraska farms despite programs of financial assistance, technical aid, and education by several national and state agencies. One reason that soil conserving adjustments in land use have not been made by farmers is that considerable uncertainty surrounds the economics of soil erosion control on the farm level. This study is an attempt to increase knowledge and reduce some of the uncertainty with regard to the economics of erosion control in a specific area.
Studies In Quantitative Paleontology. Iii. An Application Of Sequential Analysis To The Comparison Of Growth Stages And Growth Series, Benjamin H. Burma
Studies In Quantitative Paleontology. Iii. An Application Of Sequential Analysis To The Comparison Of Growth Stages And Growth Series, Benjamin H. Burma
Department of Earth and Atmospheric Sciences: Faculty Publications
Detailed directions for carrying out a comparison of characters of fossils by a sequential analysis are given. The method is adapted to comparison at a single growth stage and to the comparison of growth series. The method has the advantage of, in general, requiring fewer specimens than the classical methods of comparison.
Geologic Dating And The Time Scale Of The Ice Age, H. E. Wright Jr.
Geologic Dating And The Time Scale Of The Ice Age, H. E. Wright Jr.
Journal of the Minnesota Academy of Science
No abstract provided.
Cosmic Radiation And Radio-Carbon Age Determination, Leland S. Bohl
Cosmic Radiation And Radio-Carbon Age Determination, Leland S. Bohl
Journal of the Minnesota Academy of Science
No abstract provided.
A Simple Apparatus For Demonstrating Bernouli's Principle, G. M. Wissink
A Simple Apparatus For Demonstrating Bernouli's Principle, G. M. Wissink
Journal of the Minnesota Academy of Science
No abstract provided.
Stream Pollution, Ruth Patrick
Stream Pollution, Ruth Patrick
United States Environmental Protection Agency: Publications
This paper discusses the various ways in which aquatic organisms may be of use in solving problems associated with waste disposal. Since many state and federal laws set forth that nothing may be discharged that is deleterious to aquatic life, the most expedient way to determine the effect of an effluent is to study the aquatic organisms themselves.
In every river that has not been adversely affected by pollution there is a great variety of aquatic life. These organisms do not represent a great mass of living things, but rather they are organized into an intricately balance systems, often referred …
A Study Of Petroleum Resources, Production And Consumption In The United States And Foreign Countries In Their Relation To Our National Welfare And Security, Ann Frazier
Student Scholarship
This document, submitted by Ann Frazier in 1953, presents a comprehensive study of petroleum resources, production, and consumption within the United States and foreign countries, specifically examining their relationship to national welfare and security. The research highlights that while the United States was the world's leading consumer and producer at the time, accounting for over half of global oil production and roughly sixty percent of consumption, its domestic reserves were a waning asset that could not be renewed. The author challenges the alarmist view of imminent exhaustion by distinguishing between proved reserves and total resources, noting that vast quantities of …
Comments On The Bacillariophycaea Of North Central Arkansas, Albert Robinson Jr.
Comments On The Bacillariophycaea Of North Central Arkansas, Albert Robinson Jr.
Journal of the Arkansas Academy of Science
No abstract provided.
On Arkansas Microndrili, David Causey
On Arkansas Microndrili, David Causey
Journal of the Arkansas Academy of Science
No abstract provided.
An Introduction To The Geology Of Parke County, Indiana, Charles E. Wier, William J. Wayne
An Introduction To The Geology Of Parke County, Indiana, Charles E. Wier, William J. Wayne
Department of Earth and Atmospheric Sciences: Faculty Publications
Parke County, which is located about 50 miles west of Indianapolis, has an area of 447 square miles. It is bounded on the north by Fountain County, on the northeast by Montgomery County, on the east by Putnam County, on the south by Clay and Vigo Counties, and on the west by Vermillion County. This publication provides a summary of the glacial and bedrock geology of Parke County, Indiana, including information on landforms, bedrock geology and mineral resources.
Landscape features are natural phenomena which long have attracted man's attention. Fr.equent reference to the permanence of mountains has been made in …
The Separation Of Ethylene Diamine, Morpholine, And M-Toluidine By Means Of Paper Chromatography, Domenick S. Bruno
The Separation Of Ethylene Diamine, Morpholine, And M-Toluidine By Means Of Paper Chromatography, Domenick S. Bruno
Bachelors’ Theses
"No other discovery has exerted as great an influence and widened the .field of investigation of the organic chemist as much as Tswett's discovery. or Chromatographic Adsorption Analysis 1n 1906".
In 1910 Tswett's comprehensive work "Chromophylls in the Plant and Animal World" was published. Tswett's fundamental experiments consisted or extracting the color from dried leaves with petroleum ether. He poured the extract through a compressed column or finely powdered calcium carbonate. The column was attached to a filter flask and the solution drawn through. He found that the apparently homogeneous pigment separated into colored bands along the column as the …
The Teaching Of Science, Sherwin Maeser
The Teaching Of Science, Sherwin Maeser
Faculty Honor Lectures
Like to teach! Whether with the expectant, half-frightened freshman, the senior, worried about his preparation now that . he must get out and meet competition, or the graduate student interested in new discoveries, I like to work with all of them.
I have been teaching a long time now. As has always been the case when one generation is thinking of turning over its work to the next, I am glad to have the opportunity to talk about some of the things that I consider important in this job of teaching.
The most varied and the most acute problems of …
Dams On The Hillsides
Journal of the Department of Agriculture, Western Australia, Series 3
A reader of the "Journal of Agriculture" recently wrote to the Commissioner of Soil Conservation concerning the current tendency towards sinking dams on hillsides. He stated that many farmers and contractors were throwing up holding banks in such a manner that a large percentage of the water impounded was lost by seepage under the banks.