Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Kentucky (10948)
- University of Nebraska - Lincoln (4594)
- Department of Primary Industries and Regional Development, Western Australia (2438)
- Utah State University (2018)
- Old Dominion University (1477)
-
- Nova Southeastern University (1190)
- The Texas Medical Center Library (1091)
- University of Northern Iowa (1082)
- University of Arkansas, Fayetteville (960)
- Wright State University (894)
- Denison University (757)
- University of Nevada, Las Vegas (663)
- Virginia Commonwealth University (610)
- Western Kentucky University (572)
- University of Texas Rio Grande Valley (550)
- Portland State University (509)
- University of Colorado Law School (501)
- Loyola Marymount University and Loyola Law School (498)
- South Dakota State University (487)
- City University of New York (CUNY) (480)
- Brigham Young University (472)
- Universitas Indonesia (457)
- California Polytechnic State University, San Luis Obispo (449)
- University of South Carolina (425)
- University of South Florida (420)
- TÜBİTAK (381)
- Illinois State University (364)
- National Taiwan Ocean University (337)
- Montclair State University (330)
- SIT Graduate Institute/SIT Study Abroad (325)
- Keyword
-
- Western Australia (1631)
- Humans (725)
- Grains and field crops (684)
- Climate change (641)
- Grazing (456)
-
- Biodiversity (398)
- Ecology (391)
- Conservation (355)
- Sustainability (317)
- Agriculture (310)
- Water quality (310)
- Nitrogen (307)
- Biology (304)
- Salinity (269)
- United States (254)
- Groundwater (247)
- Animals (242)
- Management (231)
- Climate (225)
- Machine learning (225)
- Alfalfa (223)
- Cattle (223)
- Sheep (220)
- Soil (214)
- California (213)
- Biological Sciences (209)
- Grassland (206)
- Phosphorus (195)
- Environment (193)
- Bioinformatics (191)
- Publication Year
- Publication
-
- IGC Proceedings (1977-2023) (9261)
- Faculty, Staff and Student Publications (928)
- Theses and Dissertations (839)
- The Synapse: Intercollegiate science magazine (756)
- Experimental Summaries - Plant Research (725)
-
- Journal of the Iowa Academy of Science: JIAS (701)
- Electronic Theses and Dissertations (685)
- United States Department of Agriculture Wildlife Services: Staff Publications (678)
- Kno.e.sis Publications (540)
- Faculty Publications (508)
- The Prairie Naturalist (483)
- Biology and Medicine Through Mathematics Conference (456)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (446)
- Kentucky Alfalfa and Stored Forage Conference (382)
- Graduate Theses and Dissertations (363)
- Marine & Environmental Sciences Faculty Articles (360)
- School of Earth, Environmental, & Marine Sciences Faculty Publications (357)
- Journal of Marine Science and Technology–Taiwan (337)
- Biological Sciences Faculty Publications (325)
- Journal of the Department of Agriculture, Western Australia, Series 4 (324)
- Kesmas (316)
- Memorandum (316)
- All Peer-Reviewed Publications (315)
- Independent Study Project (ISP) Collection (300)
- OES Faculty Publications (296)
- Theses, Dissertations and Culminating Projects (291)
- Journal of the Arkansas Academy of Science (284)
- Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298 (266)
- Annual Symposium on Biomathematics and Ecology Education and Research (263)
- Master's Theses (258)
- Publication Type
Articles 52051 - 52080 of 52468
Full-Text Articles in Entire DC Network
A Study Of Biological Variability: The Distribution Of P32 In The Phosphorus Compounds Of The 8-Day Chick Embryo, E. K. Kelly, Herman Branson Howard University
A Study Of Biological Variability: The Distribution Of P32 In The Phosphorus Compounds Of The 8-Day Chick Embryo, E. K. Kelly, Herman Branson Howard University
Faculty Reprints
No abstract provided.
A Study Of Biological Variability: The Distribution Of P32 In The Phosphorus Compounds Of The 8-Day Chick Embryo, E. K. Kelly Howard University, Herman Branson
A Study Of Biological Variability: The Distribution Of P32 In The Phosphorus Compounds Of The 8-Day Chick Embryo, E. K. Kelly Howard University, Herman Branson
Department of Chemistry Faculty Publications
No abstract provided.
Factors Affecting The California Quail Populations In Uintah County, Utah, R. Lynn Nielson
Factors Affecting The California Quail Populations In Uintah County, Utah, R. Lynn Nielson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The California Quail is native to the coastal and semi-arid regions of California extending north into Oregon. Two subspecies are commonly recognized. the California Quail (Lophortyx californica brunnescens Ridgway), and the Valley Quail (Lophortyx californica californica Shaw). The two forms are very similar in coloration and habits and, for the purpose of this study, no effort is made to distinguish the two.
The Consumptive Use Of Water In Milford Valley, Utah, Terrel R. Tovey
The Consumptive Use Of Water In Milford Valley, Utah, Terrel R. Tovey
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Consumptive use, as used in this thesis, is defined as the sum of the volumes of water used by the vegetative growth of a given area in transpiration and building of plant tissue and that evaporated from adjacent soil, snow, or intercepted precipitation of the area in any specified time, divided by the given area. If the unit of time is small, the consumptive use is expressed in acre-inches per acre or depth in inches, whereas, if the unit of time is large, such as growing season or a 12-month period, the consumptive use is expressed as acre-feet per acre …
The Sixty-Fourth Session Of The Iowa Academy Of Science And The Nineteenth Convention Of The Junior Academy Of Science Of Iowa, April 18 And 19, 1952, Iowa Academy Of Science
The Sixty-Fourth Session Of The Iowa Academy Of Science And The Nineteenth Convention Of The Junior Academy Of Science Of Iowa, April 18 And 19, 1952, Iowa Academy Of Science
Iowa Academy of Science Documents
No abstract provided.
The Negro And Scientific Research, Herman Branson
The Negro And Scientific Research, Herman Branson
Faculty Reprints
No abstract provided.
The Negro And Scientific Research, Herman Branson Howard University
The Negro And Scientific Research, Herman Branson Howard University
Department of Chemistry Faculty Publications
No abstract provided.
The Kinetics Of Reactions In Biological Systems, Herman Branson Howard University
The Kinetics Of Reactions In Biological Systems, Herman Branson Howard University
Department of Chemistry Faculty Publications
No abstract provided.
The Kinetics Of Reactions In Biological Systems, Herman Branson
The Kinetics Of Reactions In Biological Systems, Herman Branson
Faculty Reprints
No abstract provided.
The Turnover Time Of Phosphorus In Normal Sickle Cell Trait And Sickle Cell Anemia Blood In Vitro As Measured With P32, Herman. Branson, L. Otto Banks
The Turnover Time Of Phosphorus In Normal Sickle Cell Trait And Sickle Cell Anemia Blood In Vitro As Measured With P32, Herman. Branson, L. Otto Banks
Department of Biology Faculty Publications
No abstract provided.
Remarks On The Genus Cercocarpus In Texas, Rogers Mcvaugh
Remarks On The Genus Cercocarpus In Texas, Rogers Mcvaugh
Field and Laboratory
The small genus Cercocarpus (Rosaceae), of western North America, consists of two species (according to the most conservative estimate possible), or as many as 21 species (according to Rydberg, N. Am. Fl. 22: 418-424. 1913)….In Texas the genus Cercocarpus is found in three principal areas, namely in the Panhandle, in the Edwards Plateau, and in the trans-Pecos region. In all these areas the plants occur at widely scattered localities, usually in canyons or ravines or on isolated mountain ranges, and often separated by scores or even hundreds of miles from other localities where the same species occurs.
A Report On Drosophila Collections In Nebraska, David D. Williams, Dwight D. Miller
A Report On Drosophila Collections In Nebraska, David D. Williams, Dwight D. Miller
Bulletin of the University of Nebraska State Museum (1924–2023)
Until rather recently little has been known of the Drosophila species of Nebraska. Sturtevant (1921) lists Nebraska as one of seven states from which no Drosophila had been reported. Patterson and Wagner (1943) show that collections of Drosophila pseudoobscura had been made in the vicinities of Scottsbluff and Kearney, but no other Drosophila species are reported from Nebraska in their publication.
Insect Types In The Collections Of The University Of Nebraska State Museum, Martin H. Muma
Insect Types In The Collections Of The University Of Nebraska State Museum, Martin H. Muma
Bulletin of the University of Nebraska State Museum (1924–2023)
In 1948 the insect collections at the University of Nebraska State Museum were placed in the care of the author. Prior to that date curatorial duties were assumed or assigned to full time teaching or research staff members. As would be expected under the latter circumstances, the organization of study material and types was neglected in many families and genera. Since 1948 type material, because of its intrinsic value, has received considerable attention. All primary and representative secondary types have been assembled in three museum cases and one slide cabinet for curatorial and study convenience.
John Daniel Boon (1874-1952), S. W. Geiser
John Daniel Boon (1874-1952), S. W. Geiser
Field and Laboratory
In the death of John Daniel Boon, for a quarter-century a professor of physics in Southern Methodist University, our academic community has lost one of its most distinguished citizens.
Effect Of Fire On Forest Soils In The Pine Barren Region Of New Jersey, Paul Yoder Burns
Effect Of Fire On Forest Soils In The Pine Barren Region Of New Jersey, Paul Yoder Burns
Yale School of the Environment Bulletin Series
No abstract provided.
The Turnover Time Of Phosphorus In Normal Sickle Cell Trait And Sickle Cell Anemia Blood In Vitro As Measured With P32, Herman. Branson, L. Otto Banks Howard University
The Turnover Time Of Phosphorus In Normal Sickle Cell Trait And Sickle Cell Anemia Blood In Vitro As Measured With P32, Herman. Branson, L. Otto Banks Howard University
Faculty Reprints
No abstract provided.
Tannin Content Of Certain California Oaks, Arthur Carton
Tannin Content Of Certain California Oaks, Arthur Carton
University of the Pacific Theses and Dissertations
The purpose of this paper is to investigate three California oaks as possible sources of tannin. Even though the study of the three varieties of tree may not be representative samples, the procedures developed may prove to be valuable in a more extensive research by other workers.
A Statistical Analysis Of Strength Characteristics Of Handsheets, Edward J. Horvath
A Statistical Analysis Of Strength Characteristics Of Handsheets, Edward J. Horvath
Paper Engineering Senior Theses
A literature survey was made in order to provide an outline of fundamental statistical definitions, formulas and methods which are used by the paper technician. These methods, if properly applied, would furnish valuable information as to the accuracy of test values, significance of differences and merits of various operations.
A demonstration is made of the application of statistical methods to test data obtained from samples of unbleached kraft pulp in the form of wet laps, air-dry pulp and soaked pulp. The analysis was devoted to the study of strength variations, uniformity and duplicability of handsheets produced from the three samples.
A Graphic Résumé Of The Pleistocene Of Nebraska (With Notes On The Fossil Mammalian Remains), C. Bertrand Schultz, Gilbert C. Lueninghoener, W. D. Frankforter
A Graphic Résumé Of The Pleistocene Of Nebraska (With Notes On The Fossil Mammalian Remains), C. Bertrand Schultz, Gilbert C. Lueninghoener, W. D. Frankforter
Bulletin of the University of Nebraska State Museum (1924–2023)
I T SEEMS desirable at this time to present a graphic resume of the Nebraska Pleistocene, together with a summary of the stratigraphic sequences of the fossil vertebrates. This report is based on data taken from various publications' in addition to information gathered by the present writers during the past fifteen or more field seasons. Intensive work has been done in the past five years in connection with recovery of paleontological material in the areas where government dams are under construction (Schultz, Lueninghoener, and Frankforter, 1948; Schultz and Frankforter, 1948; Holder and Wike, 1949). The information in the present paper …
The Saponification Of Esters, Robert Delong Sullivan
The Saponification Of Esters, Robert Delong Sullivan
Bachelors’ Theses
The kinetics of chemical reactions has always been a very intriguing subject. It is the tool by which the mechanisms of chemical reactions are elucidated. Upon it partly rate the advisability of utilization of a particular reaction for industrial purposes. From it the field or catalysis has sprung. Chemical kinetics. is concerned with all branches of chemistry. Conversely, all branches of chemistry have an interest in it.
This thesis will attempt to do two things. First, the order, specific rate constant, and the energy of activation will be determined from the saponification of several esters. second, the introduction will cover, …
Bulletin No. 347 - The Life History And Management Of The Mountain Whitefish Prosopium Williamsoni (Girard) In Logan River Utah, William F. Sigler
Bulletin No. 347 - The Life History And Management Of The Mountain Whitefish Prosopium Williamsoni (Girard) In Logan River Utah, William F. Sigler
UAES Bulletins
In 1948 a comprehensive fishery investigation on Logan River was initiated by the Department of Wildlife Management, Utah State Agricultural College, and the Utah Cooperative Wildlife Research Unit. Three masters' theses have been completed on life histories and populations to date (Thoreson, 1949; Fleener, 1950; Pechacek, 1950). One phase of this investigation is a study of the mountain whitefish Prosopium williamsoni (Girard).
Life History Of The Utah Sculpin Cottus Bairdi Semiscaber (Cope) In Logan River, Utah, William M. Zarbook
Life History Of The Utah Sculpin Cottus Bairdi Semiscaber (Cope) In Logan River, Utah, William M. Zarbook
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The study of the Utah sculpin in Logan River was based on 801 specimens collected during 1949 to March 1951. Numbers of fish examined for various catagories of the study wares length-frequency, 495; aging by vertebrae, 407; length-weight relationship, 601; and food habits, 275.
Fish were collected by use of an electric shocking machine generating 600 watts and 220 volts. Numbers of fish occurred as high as 150 per tenth mile of stream. Preferred habitats occurred in areas of coarse gravel and small rocks.
Vertebrae dissected from the fish were used in age determination. Length-frequency proved to be a general …
The Sixty-Third Session Of The Iowa Academy Of Science And The Eighteenth Convention Of The Junior Academy Of Science Of Iowa, April 20 And 21, 1951, Iowa Academy Of Science
The Sixty-Third Session Of The Iowa Academy Of Science And The Eighteenth Convention Of The Junior Academy Of Science Of Iowa, April 20 And 21, 1951, Iowa Academy Of Science
Iowa Academy of Science Documents
No abstract provided.
Method Of Calculating Exposures For Photomicrographs, Harold M. Hefley
Method Of Calculating Exposures For Photomicrographs, Harold M. Hefley
Journal of the Arkansas Academy of Science
No abstract provided.
Freshwater Sponges In Arkansas, David Causey
Freshwater Sponges In Arkansas, David Causey
Journal of the Arkansas Academy of Science
No abstract provided.
Effect Of Stubble Mulching On Number And Activity Of Earthworms, S. P. Teotia, F. L. Duley, T. M. Mccalla
Effect Of Stubble Mulching On Number And Activity Of Earthworms, S. P. Teotia, F. L. Duley, T. M. Mccalla
Nebraska Agricultural Experiment Station: Historical Research Bulletins
A survey of earthworm population under different cropping systems was made under stubble mulch farming and where the residue was plowed under. The influence of earthworms on some of the important physical and biological properties of the soil was studied. Their role in the decomposition of crop residues was also determined.
63rd Annual Report, Agricultural Experiment Station, University Of Nebraska College Of Agriculture, May 1950
Agricultural Research Division: News and Annual Reports
Soils Research Erosion Control and Moisture Conservation, Soil Microbiology and Crop Residue Management, Mineralogical Studies, Classification and Correlation of Soils in Soil Conservation Districts, Influence of Perennial Grasses on Soil Structure, Phosphorus Status of Nebraska Soils, Fertilizers for Corn on Nonirrigated Soils, Nitrogen Fertilizers for Bromegrass, Properties of Sandy Soils in Northeastern Nebraska, Fertilizers for Winter Wheat, Lime and Commercial Fertilizers for Sweetclover, Nitrogen Maintenance in Sharpsburg Silty Clay Loam Soil, Influence of Irrigation Practice, Seeding Rate and Fertilizer Application on the Production of Safflower, Cultural Experiments with Sugar Beets, Fertilizers for Potatoes Following Bromegrass Pasture, Influence of Irrigation Practice, …
Microradiography With Biological Specimens, Arthur D. Wellman
Microradiography With Biological Specimens, Arthur D. Wellman
Bachelors’ Theses
Microradiography is a technique in which X-rays are directed through a very thin specimen onto a fine-grained photographic film and the image examined under magnification. It has been used chiefly as a supplementary tool in industrial analysis of metal structures, and even in this field has attained prominence only within the past decade. Its usefulness is limited to fine structures (except where minute flaws or impurities are to be examined in a material), and its success is limited by the degree of clarity in the radiograph to be magnified.
Harvest Of Wild And Stocked Fish From The Logan River Drainage, Louis S. Pechacek
Harvest Of Wild And Stocked Fish From The Logan River Drainage, Louis S. Pechacek
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The Logan River heads in the southeastern corner of Franklin County, Idaho, and runs in a south and westerly direction. It enters the state of Utah through the northern boundary in the northeast corner of Cache County. The main stream is fed by two tributary streams which head in separate directions a few miles apart. The Franklin Basin branch is the main contributing tributary while the Beaver Creek branch is nearly as large.
The Sixty-Second Session Of The Iowa Academy Of Science And The Seventeenth Convention Of The Junior Academy Of Science Of Iowa, April 21 And 22, 1950, Iowa Academy Of Science
The Sixty-Second Session Of The Iowa Academy Of Science And The Seventeenth Convention Of The Junior Academy Of Science Of Iowa, April 21 And 22, 1950, Iowa Academy Of Science
Iowa Academy of Science Documents
No abstract provided.