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Articles 51211 - 51240 of 52482
Full-Text Articles in Entire DC Network
1973 Time Of Planting And Rate Of Seeding On Lupin Yield, G Walton
1973 Time Of Planting And Rate Of Seeding On Lupin Yield, G Walton
Experimental Summaries - Plant Research
Comments on results - Of the four time of planting trials two definitely showed superiority of earlier seeding (73BA5, 73E6). The two trials in the Southwest (73BR14 and 73MT7) gave highest yields with June sowing compared to May. Three trials (73BR14, 73E6 and 73BA5) appear to have a Variety x Time interaction for plant density, but no definite trend for either Uniharvest or Unicrop although later sowing reduced plant density. Seeding rates in excess of 82 kg/ha gave the highest yields in all trials. The rate of seeding experiments (73BA5 and 73MT7) show that the best crop density for yield …
Lupin Split Seed Pilot Trial - Esperance Downs Research Station., J. W. Gartrell
Lupin Split Seed Pilot Trial - Esperance Downs Research Station., J. W. Gartrell
Experimental Summaries - Plant Research
Lupin Split Seed Pilot Trial. Esperance Research Station 1974. % of seed classed according to size and degree of splitting. Manganese - S Richardson - Dandaragan 73PE2
A Study Of The Validity Of Two Indirect Predictors Of Maximal Oxygen Uptake, Robert V. Sedik
A Study Of The Validity Of Two Indirect Predictors Of Maximal Oxygen Uptake, Robert V. Sedik
Masters Theses
No abstract provided.
A Study Of Organochlorine Insecticides In Freshwater Crayfish -- Analytical Problems And Biomonitoring Survey, Robert C. Vanderjack
A Study Of Organochlorine Insecticides In Freshwater Crayfish -- Analytical Problems And Biomonitoring Survey, Robert C. Vanderjack
Masters Theses
Crayfish were collected from 3 sites on Polecat Creek, Coles County, Illinois in early spring, early summer, and late summer of 1972. Pesticides were extracted from the crayfish tissue in a one step procedure utilizing a Florisil elution column. Analysis was by electron capture gas chromatography. Pesticide residues in the nannogram range were analyzed and background contamination was an important consideration. Sources of background contamination were investigated and teflon stopcocks, Florisil, and residues on “cleaned” glassware were found to be major contamination sources. Distilled water used in flushing glassware should also be considered a potential contamination source.
Aldrin, dieldrin, and …
Final Report On Interrelationships Between Chemical, Physical And Biological Conditions Of The Waters Of Las Vegas Bay Of Lake Mead, James E. Deacon, Richard W. Tew
Final Report On Interrelationships Between Chemical, Physical And Biological Conditions Of The Waters Of Las Vegas Bay Of Lake Mead, James E. Deacon, Richard W. Tew
Publications (WR)
This program was a status study of the interaction between Las Vegas Wash, an enriched stream, and Las Vegas Bay, a wedge shaped arm of one of the world's deeper reservoirs. The program centered primarily on identification and counting of planktonic algae from several points in Las Vegas Bay. Additional work on nutrient enrichment of water samples was conducted to aid in interpretation of algal distribution related to nutrient input. Examination of a variety of physical, chemical, and biological parameters, both at many surface points in the bay, as well as in vertical profile, was also accomplished and further aided …
A Quarter Century Of Geology At The Gulf Coast Research Laboratory (1948-1973), Ervin G. Otvos Jr.
A Quarter Century Of Geology At The Gulf Coast Research Laboratory (1948-1973), Ervin G. Otvos Jr.
Gulf and Caribbean Research
Overview of the history of geology courses and research at the Gulf Coast Research Laboratory in Ocean Springs, Mississippi.
Relationship Of Heart Weight To Altitude In The Oregon Junco, Donald Lee Gatlin
Relationship Of Heart Weight To Altitude In The Oregon Junco, Donald Lee Gatlin
All Master's Theses
This paper presents a statistical analysis of dry heat weights from Oregon Juncos obtained at various altitudes.
Safe And Legal Aspects For Washington Teachers With Respect To Selected Elementary Science Programs, Wendy Jean Stoddard
Safe And Legal Aspects For Washington Teachers With Respect To Selected Elementary Science Programs, Wendy Jean Stoddard
All Master's Theses
This thesis presents varieties of information regarding teaching science in elementary school classrooms in the State of Washington. Included are Washington State Laws, National Fire Codes, general rules, and an annotated list of materials and equipment. This list was developed from items suggested in six elementary science programs. Each item was judged for safety either by scientists or by judgements found in the literature.
Recommendations included use of this material by schools, colleges, and textbook companies. Additional research was urged.
Grey Kangaroo Management Programme, Department Of Agriculture, Western Australia
Grey Kangaroo Management Programme, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
The Grey Kangaroo Management Programme, introduced in 1971 by the Department of Fisheries and Fauna, is designed to ensure the long-term conservation of the grey kangaroo, while at the same time recognising the right of the landholder to protect his primary production from damage.
One of the points which has arisen after examination of the programme is that some individual farmers are not fully aware of the requirements of the regulations.
Potassium For Pastures, Walter Jacob Cox
Potassium For Pastures, Walter Jacob Cox
Journal of the Department of Agriculture, Western Australia, Series 4
IVIany pastures in the south-west of Western Australia are deficient in potassium or need regular dressings for maximum growth. This article indicates areas and situations in which potassium might be needed, shows how deficiency is diagnosed and gives recommended rates of application.
Summary Of 1972 Seasonal Results "Decide" Superphosphate Rates On Pastures, J. W. Bowden
Summary Of 1972 Seasonal Results "Decide" Superphosphate Rates On Pastures, J. W. Bowden
Experimental Summaries - Plant Research
A total of 53 pasture trials were topdressed. Of these, 37 trials were quantitatively assessed at different times during the growing season. Of the 15 wheat trials sown, only four trials gave useful results because of multiple drilling techniques used on most trials. Until the trial results have undergone comprehensive statistical analysis, no conclusions can be drawn. about the levels of response or "optimum" rates of superphosphate application at individual sites. However, because of the very short growing season in 1972 responses were generally poor. It appears that nil superphosphate application would have been optimum for animal production in the …
1973 Rates Of Phosphate On Lupin Yield, G Walton
1973 Rates Of Phosphate On Lupin Yield, G Walton
Experimental Summaries - Plant Research
Comments on Results - New Land sites (Graphs 1, 2) - The three sites were very responsive with the point of inflexion about 600 kg/ha super rate (similar to 1972 result). The seed x super rate interaction shows the quicker response to super with higher seeding rates. Low Super Bank (800 kg/ha) (GRAPH 3) - The two sites showed very little response to super applied. On the Eradu sandplain no response to super for either Unicrop or Wheat. On the Watheroo yellow sandplain (73M015) the two lupin cultivers and the wheat gave different responses. High Super Bank (>1 OOOkg/ha) …
Mineral Nutrient Levels In Lupin Crops Affected By 'Split Seed'., M. W. Perry
Mineral Nutrient Levels In Lupin Crops Affected By 'Split Seed'., M. W. Perry
Experimental Summaries - Plant Research
Table 1. Survey of Nutrient Levels in Whole Seed. Table 2. Nutrient Levels in Tests and Embryo. Table 3. Effect of Sprays. Table 4. Nutrient Levels in Vegetative material. Table 5. Nutrient Level in Vegetative material (Soil type comparisons at paired adjacent sites) - Samples of M.L. Poole.
Objective Measurement Of Wool : Criteria, Methods And Materials, A Ingleton
Objective Measurement Of Wool : Criteria, Methods And Materials, A Ingleton
Journal of the Department of Agriculture, Western Australia, Series 4
An outline of some of the technical aspects of the objective measurement of wool—processes that will mean major cost savings to the wool industry.
Progress And Data For Investigation, D Tennant Dr
Progress And Data For Investigation, D Tennant Dr
Experimental Summaries - Plant Research
1. Fallow Re-assessment. 2. Root Penetration and Distribution in Wheat. 3. Moisture use by Lupins, Rape and Wheat. 4. Variety Investigations in respect of Root Growth. 72M9, 73MO41. Locations: Lancelin - 73M041, Wyalkatchem 73N038, Bering Siding - 73N040 (2), Tammin - 73N041, Cunderdin - 73no42, Meckering - 73N043, Bodallin - 73ME26, Walgoolan - 73ME27, Ulva Siding - 73ME29, Shackleton - 73ME30, Yelbeni - 73ME31 (3).
1973 Long Term Rotation Trials, Ian Rowland
1973 Long Term Rotation Trials, Ian Rowland
Experimental Summaries - Plant Research
The results shown are the yield of grain harvested from crops grown after various lengths of pasture ley. Experiments - W56H, 66M29, 67BA6, 68E5, 68SG5, 69GE20,
Some Aspects Of Mercury Accumulation By The Purple Shore Crab Hemigrapsus Nudus Dana (Crustacea: Decapoda), Ralph Gene Swanson
Some Aspects Of Mercury Accumulation By The Purple Shore Crab Hemigrapsus Nudus Dana (Crustacea: Decapoda), Ralph Gene Swanson
University of the Pacific Theses and Dissertations
The present study has attempted to investigate some of the more basic questions concerning the toxicity and accumulation of mercury in the purple shore crab, Hemigrapsus nudus. This rocky intertidal denizen is found in abundance along the entire Pacific coast of the United States from Sitka, Alaska, to the Gulf of California where it dominates the mid-tide pool region. Local specimens were collected just north of the Pacific Marine Stations, Dillon Beach, Marin County, California. The animal is hearty and can be kept in a state of good health for long periods of time in the laboratory with minimum care …
Models Of Primary Productivity In The Oceans, William Yi-Been Chang
Models Of Primary Productivity In The Oceans, William Yi-Been Chang
University of the Pacific Theses and Dissertations
A general mathematical equation relating variables affecting primary production has been developed to predict changes .in the vertical distribution of primary production in the oceans. The model is tested and shown to fit empirical observations from diverse oceanic areas.
Factors Affecting The Population Of Raptorial Birds On Sauvie Island, Oregon, Jeffry Gottfried
Factors Affecting The Population Of Raptorial Birds On Sauvie Island, Oregon, Jeffry Gottfried
Dissertations and Theses
This study is an analysis of the various factors affecting the population of raptorial birds on Sauvie Island, Oregon. A census of diurnal and nocturnal raptors was carried out along with an analysis of food habits. Once the major prey species were determined they were censused, and the effects of the land management practices on their numbers was investigated. In addition, 100 randomly selected nest boxes were sampled so as to determine the extent to which raptors were making use of them. Red-tailed hawk and Great Horned Owl nests were located.
It was found that four diurnal raptors and three …
The Prairie Naturalist Volume 4, Nos. 3 And 4. September–December 1972
The Prairie Naturalist Volume 4, Nos. 3 And 4. September–December 1972
The Prairie Naturalist
THE SANDHILL CRANE WITH EMPHASIS ON ASPECTS
RELATED TO NORTH DAKOTA ▪ Douglas H. Johnson and Robert E. Stewart
SIZE AND COLORATION CHARACTERISTICS OF NEOTENIC SALAMANDERS IN DEVILS LAKE, N. D. ▪ Douglas W. Larson
BIRDS' EGGS: AN AID TO NATURE APPRECIATION ▪ S. O. Kolstoe
BIRD MORTALITY AT FOUR TOWERS IN EASTERN NORTH DAKOTA — FALL 1972 ▪ Michael Avery and Tom Clement
POPULATION IRRUPTION OF THE LEAST WEASEL (Mustela nivalis) IN EAST CENTRAL NORTH DAKOTA ▪ John T. Lokemoen and Kenneth F. Higgins
On Improved Wkb (Uniform Asymptotic) Quantum Conditions, Dunham Corrections, The Langer Modification, And Rkr Potentials, Russell T. Pack
On Improved Wkb (Uniform Asymptotic) Quantum Conditions, Dunham Corrections, The Langer Modification, And Rkr Potentials, Russell T. Pack
Faculty Publications
An improvement to the WKB quantum condition for the rotation-vibration levels of diatomic molecules, known empirically to give RKR potentials of increased accuracy and to account for the Dunham correction Y00, is derived using uniform asymptotic methods. The role of the Langer transformation in this problem is also discussed.
South Dakota Farm And Home Research, Agricultural Experiment Station, South Dakota State University
South Dakota Farm And Home Research, Agricultural Experiment Station, South Dakota State University
South Dakota Farm and Home Research: 1949 -1998
New, Updated Information [p] 2
Rail Abandonment [p] 5
Soil Drying [p] 9
SADE is a System [p] 10
Trickle Irrigation [p] 15
Early South Dakota Plant Explorer [p] 17
Future Barley Designed for Feeding [p] 20
Livestock Payment Protection [p] 22
Rate of Change of Gross Crop Income [p] 25
Miniaturizing the Livestock Barn [p] 27
Corn Blight Still Here [p] 30
Seen Any Sick Deer? [p] 30
Wild or Farm-Grown Pheasant [p] 31
Checking Soil Test Recommendations [p] 31
Bulletin No 3867 - Water For Agriculture. Clearing Cloudy Or Coloured Water, N. E. Platell
Bulletin No 3867 - Water For Agriculture. Clearing Cloudy Or Coloured Water, N. E. Platell
Bulletins - 3000 - 3999
THE suspended material in most water supplies is generally clay, although sometimes organic matter and materials precipitated from solution, such as hydrated iron oxides, may be present. Coloured waters are those waters that are still coloured, due to dissolved coloured matter, after suspended material has been removed. Some coloured waters such as those found in swampy areas may be entirely free of suspended material.
The amount of clay or colour present is mainly of concern where the water is used for household purposes. Only rarely is the clay or colour present in such quantities that the water is undrinkable for …
Phytoplankton Successions And Lake Dynamics In Las Vegas Bay, Lake Mead, Nevada, Ervon R. Koening, Richard W. Tew, James E. Deacon
Phytoplankton Successions And Lake Dynamics In Las Vegas Bay, Lake Mead, Nevada, Ervon R. Koening, Richard W. Tew, James E. Deacon
Publications (WR)
Phytoplankton successions, applications of the general growth equation, and physical measurements have been employed to investigate events occurring at the interface between industrial and sewage effluent contained in Las Vegas Wash and the waters of Lake Mead, Nevada. The data indicate that the entering waters tend to form a density current interrupted at intervals by dynamic effects generated in the lake. The dynamic relationships described here for the spring months suggest that a much more thorough understanding of physical, chemical and biological interactions is necessary to permit solution of the numerous problems of Las Vegas Bay discussed or alluded to …
Morphologic Time Series From A Submarine Sand Ridge On The South Virginia Coast, John F. Mchone Jr.
Morphologic Time Series From A Submarine Sand Ridge On The South Virginia Coast, John F. Mchone Jr.
OES Theses and Dissertations
Submarine sand ridges several km long locally merge southward into the U. S. Atlantic coastline. Shallow (< 8m) observations of -such a ridge at False Cape, Virginia, favor a modern hydraulic origin. Time series maps show the ridge to be paralleled by a landward trough of approximately equal volume. Ridge flanks are usually steeper on the trough side.
Northeasterly winds and waves generate a coast-parallel current which funnels southward into the trough scouring it out and providing sediments for ridge aggradation. The current may be organized as a helical flow cell or cells. Bottom currents converge southward along the ridge crest causing landward transport of traction load along the crest. The trough current eventually breaches the confining ridge at the head of the trough, cutting saddles with steeper seaward slopes and producing outlying sediment fans.
The ridge and trough rest obliquely …
Measurement Of Haversian Bone Remodelling By Means Of Tetracycline Labelling In Rib Of Rhesus Monkeys, Charles C. Schock, Frank R. Noyes, A. R. Villanueva
Measurement Of Haversian Bone Remodelling By Means Of Tetracycline Labelling In Rib Of Rhesus Monkeys, Charles C. Schock, Frank R. Noyes, A. R. Villanueva
Henry Ford Hospital Medical Journal
Quantitative histologic measurements of haversian bone remodelling were made of mineralized rib cross sections in 13 healthy rhesus monkeys. With the aid of previous tetracycline labelling, coupled with the Villanueva Osteochrome stain, Frost's quantitative bone analysis revealed that: a) the mean haversian bone formation rate is 0.359 z 0.186 mm2/mm2/yr; b) the mean number of osteoid seams/mm2 is 4.03 ± 1.64; c) the mean appositional rale is 1 33 ± 0 23 microns/day while the radial closure rate when all the labelled systems are corrected is 0.42 r 0.080 mm/year; d) the mean circumference of …
A Mathmatical Model Of Primary Productivity And Limnological Patterns In Lake Mead, Lorne G. Everett
A Mathmatical Model Of Primary Productivity And Limnological Patterns In Lake Mead, Lorne G. Everett
Publications (WR)
The temporal and spatial changes in chemical and biological properties of Lake Mead have been investigated, thereby indicating the sources of water pollution and the time of highest pollution potential. Planktonic organisms have been shown to indicate the presence of water problems. Macro- and micro-nutrient analyses have shown that primary productivity is not inhibited by limiting concentrations. A mathematical model has been developed, tested with one set of independent data, and shown worthy of management utility. Although the model works very well for the Lake Mead area, the physical reality of the Multiple Linear Regression equation should be tested on …
Spectral Analysis Of Olfactory System Electrical Activity: Effects Of Ketamine And Sodium Pentobarbital, John Ludwig Orr
Spectral Analysis Of Olfactory System Electrical Activity: Effects Of Ketamine And Sodium Pentobarbital, John Ludwig Orr
Masters Theses
No abstract provided.
Ddt Inhibition Of (Na+, K+)-Activated Atpase In Gill Tissue Of Fundulus Heteroclitus, Nancy Mccutcheon Slate
Ddt Inhibition Of (Na+, K+)-Activated Atpase In Gill Tissue Of Fundulus Heteroclitus, Nancy Mccutcheon Slate
Master's Theses
The DDT inhibition of (Na+, K+) - activated ATPase in gill preparations of the euryhaline teleost, Fundulus heteroclitus, was measured. The (Na+, K+) -activated ATPase was found to be sensitive to DDT, with 74.6% of the enzyme's specific activity inhibited by 20 ppm DDT. The (Mg++)-activated ATPase was also sensitive to inhibition bv DDT but not to the extent of the (Na+, K+) - activat ed ATPase . Due to previous work which showed that DDT antagonized valinomycin-induced K+ conductance in a synthetic membrane, the effect of K+ on DDT inhibition was examined kinetically. The Km for K+ in gill …
Enzymatic Synthesis Of Oligoribonucleotides Of Defined Base Sequence, Bronwyn Geraldine Hughes
Enzymatic Synthesis Of Oligoribonucleotides Of Defined Base Sequence, Bronwyn Geraldine Hughes
Theses and Dissertations
A possible method for the synthesis of ordered oligoribonucleotides involves primer-dependent polynucleotide phosphorylase (PNPase) synthesis using the RNase A or T1 resistant N-cyclohexyl-N'-β(4-methylmorpholinium)ethylcarbodiimide chloride (CMC-Cl) derivatives of uridine or guanosine containing primers. Thus, CMC-UpA, CMC-GpA, CMC-UpCpC, CMC-GpApC, and ApApApApU-CMC were prepared and studied as primers for PNPase in 15 min 14C-ADP polymerization reactions and also in 6-10 hr synthesis reactions. The CMC-primers were not suitable primers for PNPase catalyzed synthesis reactions for either time. The PNPases used in such studies were contaminated with nuclease that showed the following order of susceptibility: UpA > CpC, GpA > ApU, ApA. Even a highly purified …