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Articles 57541 - 57570 of 59516
Full-Text Articles in Entire DC Network
Attendance Report: Small Mammal Workshop, Clive D. Jorgensen
Attendance Report: Small Mammal Workshop, Clive D. Jorgensen
Memorandum
No abstract provided.
Plant Observations In Validation Studies, David W. Goodall
Plant Observations In Validation Studies, David W. Goodall
Memorandum
No abstract provided.
Work Completed Or In Progress 1970, R Weir
Work Completed Or In Progress 1970, R Weir
Experimental Summaries - Plant Research
1. Yield selection characteristics - 70WH5, 70M15. 2. Sorghum development - 70GL2, 70GL9. 3. Moisture stress effects on wheat - 69GL15, 70GL3, 70GL8. 4. Flower abortion of Lupins - 70GL18, 70GL19, 70GL20, 70GL21, 70GL22. 5. Salarimeter Readings
Results Of Field Experiments 1970, M D. Carroll
Results Of Field Experiments 1970, M D. Carroll
Experimental Summaries - Plant Research
1. 70M17 The effects of Cultivation on Soil Nitrogen and Wheat Production 2. 69N11 and 69ES30 Soil Nitrogen Build-up under Various Legumes at Different Plant Densities 3. 7ON021 (R.N. Glencross) Rates of Copper and Zinc on Daliak Sub. Clover.
Native Indiana Iron Ores And 19th Century Ironworks, William J. Wayne
Native Indiana Iron Ores And 19th Century Ironworks, William J. Wayne
Department of Earth and Atmospheric Sciences: Faculty Publications
Introduction / 1
Phase one: Charcoal and native ores / 4
Northern Indiana ironworks and the postglacial bog ores / 4
Southern Indiana ironworks, Pennsylvanian and Mississippian ores / 10
Phase two: Block coals and Missouri ores / 15
Selected bibliography / 21
"The coming of iron manufacturers into the Indiana field should be encouraged. The reopening of ore deposits, the development of the coal fields, the building of furnaces within the state to smelt northern ores, the building of new railroads, and the extension of others, and the aggressive policy of existing roads to encourage industries along their lines, …
Soil Conservation Handbook, D J. Carder, G W. Spencer, Soil Consevation Service
Soil Conservation Handbook, D J. Carder, G W. Spencer, Soil Consevation Service
Books & book chapters
Soil Conservation means, basically sound land management. With good management the Ste's resources of productive land can be bot only maintained but actually improved. It is a question of deciding the best use for each soil type and situation. Profitable Production must be kept up in changing economic conditions without destroying land assets in the process.
Linear Regression Models Of Sound Velocity In The North Atlantic Ocean Below A Critical Depth, Richard Roland Kunkel
Linear Regression Models Of Sound Velocity In The North Atlantic Ocean Below A Critical Depth, Richard Roland Kunkel
Doctoral Dissertations
"Sound velocity models currently in use by the U. S. Navy require difficult data sampling at great expense. This study is to investigate the feasibility of a sound velocity model dependent only upon position that would be valid for a selected, reasonably large, near homogeneous area of the ocean. The most important position parameters are latitude, longitude, and depth. To accomplish this objective a critical depth of 2500 meters was established for an 8° by 20° rectangle of the Sargasso Sea which lies within the North Atlantic Ocean. The critical depth is defined as the depth at which the characteristics …
A New Tribe Of Saber-Toothed Cats (Barbourofelini) From The Pliocene Of North America, C. Bertrand Schultz, Marian R. Schultz, Larry D. Martin
A New Tribe Of Saber-Toothed Cats (Barbourofelini) From The Pliocene Of North America, C. Bertrand Schultz, Marian R. Schultz, Larry D. Martin
Bulletin of the University of Nebraska State Museum (1924–2023)
A new genus of Pliocene Saber-toothed felid, Barbourofelis, is proposed and two new species B. fricki and B. morrisi are described. These two forms and other described material represent an unusual lineage of felids with long sabers, shortened crania, and massive postorbital bars. The tribal name Barbourofelini is proposed for this lineage which is presently known in North America from deposits ranging in age from Clarendonian through Kimballian. The Barbourofelini apparently migrated from Eurasia to North America in the Late Miocene or Early Pliocene. Sansanosmilus of the French Vindobonian appears to represent the ancestral stock of these cats. The …
Part I - Controlling The Soil Moisture Environment Of Transpiring Plants, Part Ii - Prediction Of Leaf Temperature Under Natural Atmospheric Conditions, Charles T. Haan, Billy J. Barfield, Robert Edling
Part I - Controlling The Soil Moisture Environment Of Transpiring Plants, Part Ii - Prediction Of Leaf Temperature Under Natural Atmospheric Conditions, Charles T. Haan, Billy J. Barfield, Robert Edling
KWRRI Research Reports
Part I
A technique for controlling the soil moisture potential in the root zone of transpiring plants was developed. The method uses the principles of unsaturated flow through a porous media to develop the desired moisture potential. In the case of non-steady state transpiration, the maximum possible fluctuation in the soil moisture potential can be determined by the techniques presented.
Part II
Two implicit leaf temperature prediction equations were derived from the energy balance approach. The equations define sensible and latent heat transfer from a plant population as a two step process:
- Transfer between the plant leaf and the canopy …
1970 Results Of Field Experiments, A C. Devitt
1970 Results Of Field Experiments, A C. Devitt
Experimental Summaries - Plant Research
Please find enclosed a summary of results obtained from a range of field trials. These include a study of some techniques to replace undesirable cultivars of subterranean clover; the competitive ability of some subterranean clovers; the evaluation of the sub clover cultivars, Dinninup 3, Midland B,some members of subspeciesYanninicum, the medic cultivars Cyfield and Tornafield; and the preliminary results from an exotic pasture species introduction trial at Shark Bay. In most cases complete results have been or will be circulated in report form.
Annual Summary Of Experimental Results 1970-71 - Evaluation Of Pasture Species, G H. Walton
Annual Summary Of Experimental Results 1970-71 - Evaluation Of Pasture Species, G H. Walton
Experimental Summaries - Plant Research
During 1970 interest in the small ungrazed Legume Species Trials was reduced to ten trials located in the more troublesome areas. Five of the trials are on the sandy soils of the Midland Plain three trials are in Merredin-Southern·cross region, one is on deep sand at Tincurrin and the other is at Pindar. All thesites are sandy soils on which the sub clover strains appear to perform the best. The newer trials are investigating the value of sub clover cultivars such as Northam A,Mt Helena A, Shenton Park A, and Daglish. These trials will be the subject of a special …
Soil Microbiology, D E. Chatel
Soil Microbiology, D E. Chatel
Experimental Summaries - Plant Research
SUBTERRANEAN CLOVER INOCULATION EXPERIMENTS Badgingarra and Newdegate Comparisons between Rhizobium trifolii strain WU290 and possible replacement strains were continued. The work was conducted for the following reasons 1. The need for information on "back-up" strains particularly since the inoculant manufacturers had experienced difficulty in producing high-count peat cultures of WU290. 2. Strain CC2480a had proved very satisfactory in the Eastern States. Although it did not show up to advantage under our conditions in 1968,further testing was indicated. 3. The need for information on inoculation needs on old land.
Experimental Results 1970-71 - Phosphorus-Sulphur Maintenance Trials., R N. Glencross
Experimental Results 1970-71 - Phosphorus-Sulphur Maintenance Trials., R N. Glencross
Experimental Summaries - Plant Research
Medium Rainfall Zone Trials Eleven replications of the basic rate of P, rate of SO4-S and S experiments were maintained during 1970 in the 20in - 30 in. rainfall zone. Soil types examined were the very gravelly soils (5 reps, 4 sites), sands or loamy sands over gravel or clay (3 sites) and sandplain soils (3 reps, 2 sites). In all cases except one, fertiliser history was not reliable, but in every case well over one ton of super had been applied. over a period of over 15 years.
Groundwater Regions In Nebraska
Groundwater Regions In Nebraska
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Eddy Bluff Shelter Of Beaver Reservoir Of Northwest Arkansas, James D. Morrison
Eddy Bluff Shelter Of Beaver Reservoir Of Northwest Arkansas, James D. Morrison
Journal of the Arkansas Academy of Science
No abstract provided.
Opset Program For Computerized Selection Of Watershed Parameter Values For The Stanford Watershed Model, Earnest Yuan-Shang Liou, L. Douglas James
Opset Program For Computerized Selection Of Watershed Parameter Values For The Stanford Watershed Model, Earnest Yuan-Shang Liou, L. Douglas James
KWRRI Research Reports
The advent of high-speed electronic computer made it possible to model complex hydrologic processes by mathematical expressions and thereby simulate streamflows from climatological data. The most widely used program is the Stanford Watershed Model, a digital parametric model of the land phase of the hydrologic cycle based on moisture accounting processes. It can be used to simulate annual or longer flow sequences at hourly time intervals. Due to its capability of simulating historical streamflows from recorded climatological data, it has a great potential in the planning and design of water resources systems. However, widespread use of the Stanford Watershed Model …
The Stratigraphic Framework Of Pleistocene Glacial And Periglacial Deposits In The Central Plains, V. H. Dreeszen
The Stratigraphic Framework Of Pleistocene Glacial And Periglacial Deposits In The Central Plains, V. H. Dreeszen
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Quaternary Sedimentation On The Inner Atlantic Shelf Between Cape Henry And Cape Hatteras: A Preliminary Report, Donald J. P. Swift, Gerald L. Shideler, Nicholas F. Avignone, Barry M. Holliday, Charles E. Dill Jr.
Quaternary Sedimentation On The Inner Atlantic Shelf Between Cape Henry And Cape Hatteras: A Preliminary Report, Donald J. P. Swift, Gerald L. Shideler, Nicholas F. Avignone, Barry M. Holliday, Charles E. Dill Jr.
OES Faculty Publications
The coast of the Middle Atlantic Bight of North America's Atlantic shelf consists of a series of spit - barrier island systems attached on their northern ends to eroding headlands. It has been suggested that these barriers were generated as coastwise-prograding spits (Fisher, 1967) or alternatively as mainland beaches detached by the Holocene rise of sea level (Hoyt, 1967). The shore face before the barriers consists of fine, seaward-fining sand. Locally, it is corrugated by oblique-trending ridges with up to 8 metres of relief — see for instance CSGS Chart 1109. Beyond the shore face lies a vast submarine sand …
Anhydrous Ammonia, M G. Mason
Anhydrous Ammonia, M G. Mason
Experimental Summaries - Plant Research
Anhydrous ammonia, as the name infers, is pure ammonia, It is kept in a liquid form under pressure and must therefore be stored in special vessels. When pressure is released it changes to gaseous form. Anhydrous ammonia is the most concentrated form of nitrogen fertiliser available. It has 82% nitrogen compared to 46% for urea, the most concentrated solid form of nitrogen fertilisers.
Trials carried out were:
1965 - 1967 Wongan Hills Research station (3)
1967 - Badgingarra (1)
1968 - Moulyinning (1)
1968 - North Lake Grace (1)
1969 - Westonia (1)
Merredin (1)
Tammin. (1)
List Of Experimental Programmes 1970 - 1971, Department Of Agriculture And Food, Western Australia
List Of Experimental Programmes 1970 - 1971, Department Of Agriculture And Food, Western Australia
Experimental Summaries - Plant Research
L.T. Jones, Vines and vegetables. J.E.L. Cripps, Fruit tree management. R.N. Glencross, Nutrition of pastures and cereals in higher rainfall areas. M.D. Carroll, Fertility changes mineral deficiencies. D.L. Chatel, Soil Microbiology. C.M. Francis, Agronomy and adaptation of lupins. A.E. Oakley, Radioisotopes studies. J.W. Gartrell, Trace element nutrition of cereals and pastures. M.G. Mason, Nitrogen nutrition of cereals. D.A. Nicholas, Evaluation of perennial and annual pasture cultivars in higher rainfall areas. M.L. Poole, Agronomy of crops in high rainfall areas, oilseed and other new crops. D. Tennant, Soil-plant water relations and root growth of cereals. G.H. Walton Evaluation of pasture cultivars …
Occurrence Of Gypsum In The Johnson Shale (Permian) In Nemaha County, Nebraska, R. R. Burchett
Occurrence Of Gypsum In The Johnson Shale (Permian) In Nemaha County, Nebraska, R. R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Distribution And Subdivision Of Precambrian And Lower And Middle Paleozoic Rocks In The Subsurface Of Nebraska, M. P. Carlson
Distribution And Subdivision Of Precambrian And Lower And Middle Paleozoic Rocks In The Subsurface Of Nebraska, M. P. Carlson
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
A Comparative Study Of Nickel Sulphide Deposits Within The Area Of The Canadian Shield, Robert G. Kreiner
A Comparative Study Of Nickel Sulphide Deposits Within The Area Of The Canadian Shield, Robert G. Kreiner
Theses and Dissertations (Comprehensive)
In order to plan the future development of the Canadian Shield within a conceptual framework as suggested by the Mid-Canada Corridor concept, both the presently developed and potential, natural resources of this area need to be evaluated for knowledgeable development and management. To this purpose, various areas of nickel sulphide deposits within the area of the Canadian Shield have been studied with the object of determining similar sequences of intrusive events and their spatial relationships.
Within the Sudbury area, Ontario, five periods of intrusive activity have been recognized, each period characterized by an initial intrusion of acidic composition, followed in …
Groundwater Flow In Part Of The Little Missouri River Basin, North Dakota, Thomas M. Hamilton
Groundwater Flow In Part Of The Little Missouri River Basin, North Dakota, Thomas M. Hamilton
Theses and Dissertations
The Little Missouri valley in western North Dakota is deeply incised into slightly permeable Mesozoic and Cenozoic sediments. An evaluation of the groundwater flow in part of this valley was 'based on the present groundwater flow-system models. Abrupt changes in the hydrochemical facies have been explained relative to a continuous flow system.
The Little Missouri valley ls the discharge area of a regional groundwater flow system; it affects the potential distribution of the flow system for a minimum of 1.000 feet below the valley floor. The discharge area is approximately the same width as the valley floor and has a …
St. Louis Limestone, Stratigraphy And Petrography, Near Its Type Locality, Abd El-Aziz El-Hady A. Borahay
St. Louis Limestone, Stratigraphy And Petrography, Near Its Type Locality, Abd El-Aziz El-Hady A. Borahay
Masters Theses
"The St. Louis Limestone of the Upper Meramecian Series, Mississippian System, is typically lithographic, light-to light-olive gray in color, dense, and fractures conchoidally. It is brecciated, especially in the lower part, and contains some chert nodules. Oolites are present close to the top of the formation. The Salem-St. Louis contact is placed at the base of the lowest breccia zone and the top of Salem is characterized by crystalline quartz and abundance of chert nodules. The appearance of typical Ste. Genevieve oolites with sand-size quartz grains indicates the St. Louis-Ste. Genevieve contact. The St. Louis Limestone is characterized by dominance …
Evaluation And Application Of Dye Tracers In Karst Terrain For Determining Aquifer Characteristics, Milton Frank Bradley
Evaluation And Application Of Dye Tracers In Karst Terrain For Determining Aquifer Characteristics, Milton Frank Bradley
Masters Theses
"As ground water becomes increasingly important as a source of water in the United States, reliable information on the hydrological characteristics of carbonate aquifers must be obtained in order to develop them intelligently. Various tracers have been used in the past to determine if two or more points are connected hydrologically. Today there exists a number of excellent dye tracers and tracer methods have been developed in unconsolidated and clastic aquifers for determining hydrological characteristics. This paper reviews the various dye tracers and methods which might be applied in a carbonate karst terrain using wells as injection and sampling points. …
Petrology And Diagenesis Of The Cyclic Maquoketa Formation (Upper Ordovician) Pike County, Missouri, Edwin Carl Kettenbrink Jr.
Petrology And Diagenesis Of The Cyclic Maquoketa Formation (Upper Ordovician) Pike County, Missouri, Edwin Carl Kettenbrink Jr.
Masters Theses
"The Maquoketa Formation (Upper Ordovician-Cincinnatian Series) has been extensively studied for over one hundred years, but a petrographic study of its cyclic lithologies has been neglected. The following six distinct Maquoketa lithologies have been recognized in this study in Pike County, Missouri: 1) phosphatic biosparite, 2) phosphorite, 3) micrite-microsparite, 4) dolomitic shale, 5) dolomitic marlstone, and 6) dolomitic quartz siltstone. Three cycle types are present in the Maquoketa. They are expressed as thin beds (1-20 inches) of alternating micrite-shale, micrite-marlstone, and shale-siltstone. Contacts between different lithologies are sharp, indicating a primary sedimentological origin for the cycles. Precisely what mechanism was …
The Lund Ash-Flow Tuff, John Evans Kreider
The Lund Ash-Flow Tuff, John Evans Kreider
Masters Theses
"The Lund Ash-flow Tuff is the uppermost member of the Needles Range Formation, located in southwestern Utah and eastern Nevada. This member can be correlated over an area of several thousand square miles. A detailed study of petrographic and physical features of the Lund show vertical and lateral variations in mineral content and welding intensity. Vertical differences are related to changes in the magma chamber during the Lund eruption interval. Several different ash-flows make up the Lund member. All mineral concentrations vary laterally, with concentration decreasing away from the center of the Lund field. Vertical and lateral variations in physical …
Geophysical Institute Annual Report 1969-70, Geophysical Institute
Geophysical Institute Annual Report 1969-70, Geophysical Institute
GI Reports
The 1969-70 Geophysical Institute Annual Report presents an overview of the year’s scientific research achievements across the Institute’s disciplines, alongside operational summaries covering finances, administrative changes, and other key activities.
Nebraska Groundwater Level (Decline & Rise), 1970
Nebraska Groundwater Level (Decline & Rise), 1970
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.