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Articles 30871 - 30900 of 32987
Full-Text Articles in Entire DC Network
A New Rhinoceros From The Nebraska Miocene, Lloyd G. Tanner
A New Rhinoceros From The Nebraska Miocene, Lloyd G. Tanner
Bulletin of the University of Nebraska State Museum (1924–2023)
A new species of rhinoceros, Menoceras marslandensis, is here proposed. It is based upon a nearly complete skull from the upper part of the Marsland Formation, Hemingford Group (Miocene), of Box Butte County, Nebraska. The new species was probably derived from Menoceras arikarense (Barbour), collected from the Agate Springs Quarries (Arikaree Group, Harrison Formation) of Sioux County, Nebraska, with which both Diceratherium niobrarensis Peterson and D. cooki Peterson are likely synonymous. From Menoceras arikarense, the presumed ancestral stock, Menoceras marslandensis differs in possessing the following characters: (1) very long, fused but slightly cleft, nasals, with flattened, rugose areas …
Lancaster County, Nebraska Soils -- Geology Field Trip, Conservation Survey Division
Lancaster County, Nebraska Soils -- Geology Field Trip, Conservation Survey Division
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Nebraska Groundwater Level (Decline & Rise), 1969
Nebraska Groundwater Level (Decline & Rise), 1969
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Nebraska's Water Supply Map Including Groundwater In Storage, Total Water Withdrawals, Precipitation, And Outflow As Of 1969
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
New Members Of The Gering Formation (Miocene) In Western Nebraska, Including A Geological Map Of Wildcat Ridge And Related Outliers, Carl F. Vondra, C. Bertrand Schultz, Thompson M. Stout
New Members Of The Gering Formation (Miocene) In Western Nebraska, Including A Geological Map Of Wildcat Ridge And Related Outliers, Carl F. Vondra, C. Bertrand Schultz, Thompson M. Stout
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Otoe County, Unadilla. Lincoln: University Of Nebraska, R. K. Pabian
Otoe County, Unadilla. Lincoln: University Of Nebraska, R. K. Pabian
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Nebraska Soil Association Map, 1969, Conservation And Survey Division
Nebraska Soil Association Map, 1969, Conservation And Survey Division
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Late Middle Ordovician Graptolites From The Subsurface Of Eastern Nebraska, M. P. Carlson, W. B.N. Berry
Late Middle Ordovician Graptolites From The Subsurface Of Eastern Nebraska, M. P. Carlson, W. B.N. Berry
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Total Number Of Irrigation Wells Located In Nebraska Counties As Of 1969
Total Number Of Irrigation Wells Located In Nebraska Counties As Of 1969
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Groundwater Levels In Nebraska, 1969, C. F. Keech
Groundwater Levels In Nebraska, 1969, C. F. Keech
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Gaseous Exchange In Crop Stands, Edgar Lemon
Gaseous Exchange In Crop Stands, Edgar Lemon
Department of Agronomy and Horticulture: Faculty Publications
Man through the ages has evolved a strategy, albeit empirical, of manipulating the environment and the plant to his advantage. Practices such as fertilizing the soil, irrigation, weed control, and plant breeding and selection are common. Nonetheless, concentrated and coordinated efforts to understand the mechanisms controlling the whole soil-plant- atmosphere continuum is a new approach to finding new ways to favorably manipulate the whole system as well as predict response.
Conceptually and experimentally it has proven advantageous to view the total system in terms of energy, momentum, and mass exchange. This makes sense because in the first instance the foundations …
Environmental Manipulation For Higher Yields, Paul Waggoner
Environmental Manipulation For Higher Yields, Paul Waggoner
Department of Agronomy and Horticulture: Faculty Publications
My role in this chapter on environmental manipulations is making a prediction that can be used until experiments render the final verdict.
In chapters preceding mine, an array of physical and physiological phenomena for affecting yield has been laid before the grower of plants. Predicting whether environmental manipulation will increase yield requires that all of these phenomena be considered for foreign lands are littered with the bleaching bones of immigrant varieties and practices that were ambushed by an unsuspected environmental difference.
Interaction is the Scylla of biologic prediction. Formerly we predicted by drawing a curve or writing a formula relating …
Cultural Manipulation For Higher Yields, William Duncan
Cultural Manipulation For Higher Yields, William Duncan
Department of Agronomy and Horticulture: Faculty Publications
By cultural manipulation we will mean, in a broad sense, everything a farmer might do to increase crop yields per hectare, after he decides what to plant and buys the seed. With this restriction we leave out the agricultural economist and the plant breeder. When we limit our interest to yields per hectare we introduce an element of area. This will include the crop canopy above the surface and the root system below it. Cultural manipulation also includes what the farmer might do to make best use of water, carbon dioxide, nitrogen, and essential mineral nutrients whether they occur naturally …
Detection Of Vibrationally Excited N2 By Superelastic Electron Impact, Paul Burrow, Paul Davidovits
Detection Of Vibrationally Excited N2 By Superelastic Electron Impact, Paul Burrow, Paul Davidovits
Paul Burrow Publications
We have observed electrons scattered superelastically from nitrogen molecules vibrationally excited by quenching collisions with optically excited rubidium atoms. Analysis of the energy gained by the electrons shows that in more than 10% of the quenching collisions the highest energetically allowed vibrational state of N2, v=5, is populated. The relative superelastic cross section for collisions between molecules in this state and electrons is measured and compared with that predicted by detailed balance.
Controlled Water Releases To Improve Sauger Spawning Below Fort Randall Dam, Charles H. Wahlburg
Controlled Water Releases To Improve Sauger Spawning Below Fort Randall Dam, Charles H. Wahlburg
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
Studies by the North Central Reservoir Investigations show that good reproduction by Lewis and Clark Lake sauger is dependent on minimum water level change on spawning grounds. Sauger spawn 7 miles below Fort Randall Dam over a 4-mi1e long gravel, rubble, boulder shoreline. Spawning begins when water temperatures at the dam reach 42 F. This usually occurs during the latter part of April or early May. Sauger spawn along the shoreline in 1 to 2 ft of water from about 8:00 PM to 12:00 Midnight. Fertilized eggs sink to the bottom and adhere to gravel ~ rubble, and boulders. Most …
Ionic Transport In Potassium Chloride, Robert Fuller, Charles L. Marquardt, Michael H. Reilly, John C. Wells Jr.
Ionic Transport In Potassium Chloride, Robert Fuller, Charles L. Marquardt, Michael H. Reilly, John C. Wells Jr.
Robert G. Fuller Publications
The electrical conductivity and chlorine ion diffusion in KC1 and KCl:SrC12 single crystals have been analyzed by least-squares methods, using as a model a perfect crystal perturbed by five defects: isolated anion vacancies, isolated cation vacancies, divalent cation impurities, divalent cation-impurity-cation-vacancy complexes, and vacancy pairs. The transport equations were derived from this five-defect model using a simple theory for noninteracting particles, except for the nearest-neighbor binding to form complexes and vacancy pairs, and using the same theory including long-range Coulomb interactions between the isolated defects. This latter theory yielded the better description of the experimental results. However, the analyses …
A Population Analysis Of Juniperus In The Missouri River Basin: Taxonomic Interrelationships Between Juniperus Scopulorum Sarg. And J. Virginiana L. In Missouri River Basin, David F. Van Haverbeke
A Population Analysis Of Juniperus In The Missouri River Basin: Taxonomic Interrelationships Between Juniperus Scopulorum Sarg. And J. Virginiana L. In Missouri River Basin, David F. Van Haverbeke
University Studies (University of Nebraska) (1888–1984)
Juniper has been used since early pioneer days in the protective tree plantings established on the windswept Great Plains. More recently juniper has been used as a basic component of the shelter belt plantings which, by the thousands, dot the prairies of the Great Plains from Texas to Canada. Research to improve the quality of Plains tree planting materials, including Juniperus) is proposed or is now in progress.
In the fall of 1965, 72 native stands of Juniperus were sampled throughout the Missouri River Basin-an area encompassing most of the Central and Northern Great Plains. The purpose was to determine …
Department Of Entomology Newsletter - No. 3, 1968, Bruner Entomology Club, Jon J. Tollefson
Department Of Entomology Newsletter - No. 3, 1968, Bruner Entomology Club, Jon J. Tollefson
Hexapod Herald and Other Entomology Department Newsletters
Bruner Entomology Club
University of Nebraska State Museum, Division of Entomology
Field Trip, 1968
Insect Pathology Program
New Staff: Earle S. Raun (Chairman), John B. Campbell, Thomas J. Helms
Undergraduates and Undergraduate Teaching
Staff: Roscoe E. Hill, Kenneth P. Pruess, James M. Shalk, J. Derril Munson, Walter R. Akeson, Robert E. Roselle, Donald E. Lawson, Earle S. Raun, S. Dean Kindler, Robert Staples, Lloyd W. Andersen, Harold J. Ball, George R. Manglitz, Paul C. Peterson, Calvin M. Jones, John B. Campbell, David L. Keith, Thomas J. Helms
Clerical and Technical Staff: Esther A. Schock, Carla M. Tollefson, Barbara J. Lloyd, …
Species And Abundance Of Diurnal Raptors In The Panhandle Of Nebraska, John E. Mathisen, Ann Mathisen
Species And Abundance Of Diurnal Raptors In The Panhandle Of Nebraska, John E. Mathisen, Ann Mathisen
Nebraska Game and Parks Commission: Staff Research Publications
RECENT evidence of population declines for several species of raptors has been a subject of some concern both nationally and internationally. Although raptors are the most conspicuous birds in our environment, by virtue of their large size, flight habits, and food habits, little information is available to evaluate population densities and trends over large areas. Data are needed to provide yardsticks for judging population changes over time periods and among geographic areas.
This study was undertaken to provide information on the species and seasonal abundance of raptors in the panhandle of Nebraska for three years (1957 through 1959). Ten years …
Energy Deposition By Electron Beams And Δ Rays, E. J. Kobetich, Robert Katz
Energy Deposition By Electron Beams And Δ Rays, E. J. Kobetich, Robert Katz
Robert Katz Publications
The product of two empirical relations, for the practical range and the transmission probability of normally incident electrons through plane sheets of matter, may be differentiated to yield a simple formulation of the energy deposition by electron beams, in agreement with more complex formulations and with experimental data. When combined with the δ-ray distribution formula, these results provide a theory of the spatial distribution of ionization energy about the path of a rapidly moving ion, which is basic to theories of radiation damage and detection.
The Prairie Naturalist Volume 1, No.4. December 1969
The Prairie Naturalist Volume 1, No.4. December 1969
The Prairie Naturalist
EDITORIAL: Restoring Beauty to the Human Environment ▪ Paul B. Kannowski
A REQUIEM FOR THE PRAIRIE ▪ Hugh H. Iltis
BIRDING IN MY BACK YARD ▪ Mrs. George A. Anderson
OCCURRENCE OF THE CECROPIA AND ROCKY MOUNTAIN SILK MOTHS IN SOUTHWESTERN NORTH DAKOTA ▪ James Oberfoell
Application Of The Method Of Lattice Statics To Interstitial Cu Atoms In Cu, John Flocken, John Hardy
Application Of The Method Of Lattice Statics To Interstitial Cu Atoms In Cu, John Flocken, John Hardy
John R. Hardy Papers
We have calculated the lattice distortion produced by a body-centered interstitial Cu atom in a Cu host lattice. The calculations have been carried out consistently on the basis of discrete lattice theory, using the technique of lattice statics which is based on the Fourier transformation of the direct-space equilibrium equations. The force constants for the perfect lattice have been taken from measured phonon-dispersion curves, and we have used Huntington's Born-Mayer potential to describe the interaction between the interstitial atom and the atoms of the host lattice. The comparison of our results with those obtained by earlier workers, using semidiscrete matching …
Test 1001: Ford 4000, 4600 And 4610 8-Speed Gasoline (Also Ford 4000 Gasoline Row Crop And Super Utility), Nebraska Tractor Test Lab
Test 1001: Ford 4000, 4600 And 4610 8-Speed Gasoline (Also Ford 4000 Gasoline Row Crop And Super Utility), Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …
Test 999: Ford 4000 Gasoline Select-O-Speed (Also Ford 4000 Gasoline Select-O-Speed Row Crop), Nebraska Tractor Test Lab
Test 999: Ford 4000 Gasoline Select-O-Speed (Also Ford 4000 Gasoline Select-O-Speed Row Crop), Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …
Test 997: Ford 5000 Gasoline Select-O-Speed (Also Ford 5000 Gasoline Select-O-Speed Row Crop), Nebraska Tractor Test Lab
Test 997: Ford 5000 Gasoline Select-O-Speed (Also Ford 5000 Gasoline Select-O-Speed Row Crop), Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …
Test 998: Ford 5000 Gasoline 8-Speed (Also Ford 5000 Gasoline 8-Speed Row Crop And Ford 6600 Gasoline 8-Speed), Nebraska Tractor Test Lab
Test 998: Ford 5000 Gasoline 8-Speed (Also Ford 5000 Gasoline 8-Speed Row Crop And Ford 6600 Gasoline 8-Speed), Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …
Effects Of Main Stem Impoundments And Channelization Upon The Limnology Of The Missouri River, Nebraska, Larry A. Morris, Ralph N. Langemeier, Thomas R. Russell, Arthur Witt Jr.
Effects Of Main Stem Impoundments And Channelization Upon The Limnology Of The Missouri River, Nebraska, Larry A. Morris, Ralph N. Langemeier, Thomas R. Russell, Arthur Witt Jr.
Nebraska Game and Parks Commission: Staff Research Publications
Rigid control has been imposed upon the Missouri River by impounding over one-half of the upper 1,500 miles and by channeling most of the remaining river within permanent, narrow banks. These controls have caused environmental changes in the lower Missouri River, as shown by this study, of adjacent unchannelized and channelized sections of river below the main stem impoundments. Impoundments have regulated flow by evening maximum and minimum discharges and improved downstream water quality by decreasing turbidity and indirectly raising the dissolved oxygen. In addition the impoundments have contributed a limnetic cladoceran, Leptodora kindti, to the drift and have …
Test 995: Ford 4000 Diesel Select-O-Speed (Also Ford 4000 Diesel Select-O-Speed Row Crop), Nebraska Tractor Test Lab
Test 995: Ford 4000 Diesel Select-O-Speed (Also Ford 4000 Diesel Select-O-Speed Row Crop), Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …
Test 996: Ford 5000 Diesel 8-Speed (Also Ford 5000 Diesel 8-Speed Row Crop), Nebraska Tractor Test Lab
Test 996: Ford 5000 Diesel 8-Speed (Also Ford 5000 Diesel 8-Speed Row Crop), Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …
Test 1000: Ford 5000 Diesel Select-O-Speed (Also Ford 5000 Diesel Select-O-Speed Row Crop), Nebraska Tractor Test Lab
Test 1000: Ford 5000 Diesel Select-O-Speed (Also Ford 5000 Diesel Select-O-Speed Row Crop), Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …