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Articles 77461 - 77490 of 78533
Full-Text Articles in Entire DC Network
Cobalt(Iii) Complexes With 1,2-Propanediaminediacetic Acid, Paul John Magnell
Cobalt(Iii) Complexes With 1,2-Propanediaminediacetic Acid, Paul John Magnell
Masters Theses
Introduction
Aminocarboxylic acid cobalt(III) complexes have been of interest to inorganic chemists since 1909 when Ley and Winkler isolated violet and rose colored geometric isomers of tris amino acid complexes of glycine and alanine.1 More recently, considerable interest has been shown in the study of the stereochemistry and optical activity arising from configurational and vicinal interactions of these complexes. Nuclear magnetic resonance of the methylene protons on the carboxylate portion of the coordinated ligand has also been studied.
Of immediate interest to this study is the stereo-chemistry of complexes containing flexible tetradentate ligands. A tetradentate ligand may be constructed …
Cell-Free Amino Acid-Incorporating Systems From Mesofhilic And Thermophilic Species Of The Genus Bacillus, Nisson Schechter
Cell-Free Amino Acid-Incorporating Systems From Mesofhilic And Thermophilic Species Of The Genus Bacillus, Nisson Schechter
Dissertations
No abstract provided.
The Fishes Of The Nemaha Basin, Nebraska, Larry Witt
The Fishes Of The Nemaha Basin, Nebraska, Larry Witt
Nebraska Game and Parks Commission: Staff Research Publications
The possible effects of proposed watershed management practices on fish resources of the Nemaha Basin were poorly understood; thus, a study was undertaken to ascertain the species of fish present and their relative abundance and distribution within the basin. Thirty-five species were collected, 34 of them from the Big Nemaha River system and 28 from the Little Nemaha River system. These data may be used as a basis for future studies of fish population changes in the Nemaha Basin and possibly as a basis for studies in other watersheds.
"Remarks On The Motion Picture No Blade Of Grass", Cornel Wilde
"Remarks On The Motion Picture No Blade Of Grass", Cornel Wilde
Special Collections: Oregon Public Speakers
No abstract provided.
The Ias Bulletin, V4n5, November 1970, Iowa Academy Of Science
The Ias Bulletin, V4n5, November 1970, Iowa Academy Of Science
IAS Bulletin
In this issue:
--- Officers, Directors, and Section Chairmen, 1970-71
--- Important Board Action Concerning Proceedings
--- Annual Meeting Plans
--- Governor's Conference on Environmental Systems
--- "Public Lands and the People" Conference
--- IAS to Seek NSF Support for State Government-Academy Cooperation
--- IAS Receives NSF Grant to Help Finance Junior Academy Research Symposium
--- New Standing Committees Asked to Meet
--- Iowa Academy-State of Iowa Connections
--- Survey of Interest in the Iowa Science Teachers Journal
--- Back Issues of the Proceedings Available
--- Changes in Farm Management
--- Legislative Advisory Committee to be Appointed
--- Invitations for …
Machairodont Cats From The Early Pleistocene Broadwater And Lisco Local Faunas, C. Bertrand Schultz, Larry D. Martin
Machairodont Cats From The Early Pleistocene Broadwater And Lisco Local Faunas, C. Bertrand Schultz, Larry D. Martin
Bulletin of the University of Nebraska State Museum (1924–2023)
A new species of Ischyrosmilus (I. crusafonti) is reported from the Early Pleistocene Broadwater Local Fauna of Morrill County, Nebraska. Ischyrosmilus sp. is reported from the Early Pleistocene Lisco Local Fauna. Megantereon is reported from the Broadwater Local Fauna and this is the first record of the genus from North America.
Bioassay Procedures For Oil And Oil Dispersant Toxicity Evaluation, Gilles Laroche, Ronald Eisler, Clarence M. Tarzwell
Bioassay Procedures For Oil And Oil Dispersant Toxicity Evaluation, Gilles Laroche, Ronald Eisler, Clarence M. Tarzwell
United States Environmental Protection Agency: Publications
Hazards to marine and estuarine fauna associated with offshore drilling of oil and with transport of large quantities of oils via tankers are numerous and understandable. At present, there is a growing body of evidence on adverse effects to these organisms of crude oil (1) (2) (3) (4) (5) (6) (7) (8) (9) and chemical oil counteracting agents or dispersants (5) (6) (9) (10) (11) (12) (13) (14) (15) (16) (17). These effects are well summarized by Smith (18) and by Carthy and Arthur (19).
Comparatively few workers have studied the influence of oil-dispersant mixtures of marine life. Studies by …
Water Resources News, Volume 2, No. 10, November 1970
Water Resources News, Volume 2, No. 10, November 1970
Water Current Newsletter
NWRRI Director Named Executive Secretary of Universities Council on Water Resources
1971 Summer Institutes Planned
Research and Development Sources Sought
NWRRI Proposals Submitted
FWQA Booklet on Fish Mortalities
Urban Wastewater Renovation Through Agriculture
Control of Oil Pollution
Environmental Education Bill to White House
Title II Awards for FY 1971
Case Studies in Water Resources Systems Analysis
National Environmental Pollution Conference
UCOWR Annual Meeting Held in Virginia
Reorganizational Plans for Environmental Programs
National Water Commission Studies
Research Review
New Publications Received by the Institute - November
Algal Growth And Decomposition: Effects On Water Quality, Phase Ii, Edward G. Foree, Ronald L. Barrow
Algal Growth And Decomposition: Effects On Water Quality, Phase Ii, Edward G. Foree, Ronald L. Barrow
KWRRI Research Reports
The decomposition and associated nutrient regeneration of three unialgal cultures and one mixed culture containing an indigenous population of bacteria and microscopic animals were studied under dark, constant temperature laboratory conditions. After periods of nutrient-deficient growth ranging from O to 30 days, these cultures were inoculated with decomposer populations and subjected to anaerobic and aerobic environments for the decomposition studies. The extend of decomposition was determined from the percentage volatile suspended solids and percentage particulate COD remaining after 200 days of decomposition. The average extent of decomposition was greater for aerobic than for anaerobic conditions. However, significant portions of the …
Territorial Male Red-Winged Blackbird Distribution In Wood County, Ohio, M. I. Dyer
Territorial Male Red-Winged Blackbird Distribution In Wood County, Ohio, M. I. Dyer
Bird Control Seminars Proceedings
Red-winged blackbirds (Agelaius phoneiceus) have been studied intensively in the United States and Canada by research biologists of the Bureau of Sport Fisheries and Wildlife for more than a decade. The detailed information on popula¬tion dynamics of the species that has been acquired is now being assembled and assessed. Definite patterns in the distribution of some of the eastern and mid-western populations have become apparent (Dyer et al., 1072; Power, 1069, 1970). A very complex distribution of territorial densities occurs in the western Lake Erie Basin of the U.S. and Canada (Dyer et al., 1972), where there are significant differences …
Studies On The Movements Of Blackbirds And Starlings In The West End Of Lake Erie, Maurice L. Giltz, Harold E. Burtt
Studies On The Movements Of Blackbirds And Starlings In The West End Of Lake Erie, Maurice L. Giltz, Harold E. Burtt
Bird Control Seminars Proceedings
The operation of decoy traps at The North Central Farm, Vickery, Ohio, the Ottawa-Crane Creek-McGee Marsh Area, and on the Bass Islands in Lake Erie, has permitted the banding of thousands of Red-winged Blackbirds (Agelaius phoeniceus), Common Grackles (Quiscalus quiscala), Brown-headed Cowbirds (Molothrus ater), and Starlings (Sturnus vulgaris). The repeats and returns of these banded birds justify inferences concerning the sex and age ratios in the populations and the stability of the populations, as well as indicating the seasonal migrations and movements of the populations.
Serum Calcium Levels Of The Red-Winged Blackbird (Agelaius Phoeniceus), Tim Burkholder
Serum Calcium Levels Of The Red-Winged Blackbird (Agelaius Phoeniceus), Tim Burkholder
Bird Control Seminars Proceedings
Serum calcium levels were analyzed by atomic absorption spectrophotometry during different stages of development of the Red-winged Blackbird (Agelaius phoeniceus). The effects of the reproductive cycle, growth, and soil calcium on mean serum calcium levels in this species were analyzed as were the effects of mean serum calcium levels on eggshell thickness, hatchability, and egg production.
Research Panel Discussion, John Seubert
Research Panel Discussion, John Seubert
Bird Control Seminars Proceedings
Panel Members: Morley R. Kare, Robert G. Schwab and M. R. Woulfe
Nonbiolog1cal Alteration Of 3-Chloro P-Toluidine Hydrochloride (Drc-1339) In An Aqueous Solution, T. R. Darden, Robert G. Schwab
Nonbiolog1cal Alteration Of 3-Chloro P-Toluidine Hydrochloride (Drc-1339) In An Aqueous Solution, T. R. Darden, Robert G. Schwab
Bird Control Seminars Proceedings
The effectiveness of 3-chloro p-toluidine (DRC-1339) as an avicide, particular¬ly on the European starling, has been adequately demonstrated (DeCino, Cunningham, and Schafer, 1966; Schwab, 1965, 1966, and 1967). Methods of applying the com¬pound which have proved useful range from the standard baiting technique (Besser, Royall, and DeGrazio, 1967; Royall, DeCino, and Besser, 1967; West, 1968) to pos¬sible aerial application of the compound to roosting sites (Schwab, 1967). These methods, particularly the latter, inherently lead to widespread environmental exposure. As the chemical name implies, DRC-1339 is a chlorinated hydrocarbon. It thereby carries the stigma, whether justifiable or not, of environmental persistence …
Food Choice Behaviour, R. G. B. Brown
Food Choice Behaviour, R. G. B. Brown
Bird Control Seminars Proceedings
Since 1965 the Canadian Wildlife Service has been concerned with the damage which birds cause in the orchards and vineyards of the Niagara fruit belt, in southern Ontario. My own contribution to this programme has been to collect information on the feeding be¬haviour and ecology of the birds concerned, and use this to test the effectiveness of various control systems. For the purposes of this seminar, I shall only deal with the damage which Robins do to sweet cherries. Here, I was particularly interested in whether it was possible to develop a "bird-proof cherry variety, which would settle the problem …
Industry Consideration And Approach, John R. Beck
Industry Consideration And Approach, John R. Beck
Bird Control Seminars Proceedings
Many people are quite concerned and interested in the development of new avicides and in the continuation of existing ones. I think there are certain directions that the public at large expects industry and government to go in regards to control operations, pollution, and so forth. One of the things I think we need to concern our¬selves with is the fact that several biologically-oriented control mechanisms in control programs have been overlooked, sometimes intentionally. In the future, reg¬istration and regulatory groups are going to show more interest and a more amenable attitude toward biologically-oriented control programs, mechanism, and materials. Certainly …
Fifth Bird Control Seminar Proceedings: Contents, William B. Jackson
Fifth Bird Control Seminar Proceedings: Contents, William B. Jackson
Bird Control Seminars Proceedings
Bowling Green State University
Bowling Green, Ohio
September 15-17, 1970 Sponsored by the Department of Biology Bowling Green State University
with the assistance of Division of Wildlife Services United States Fish and Wildlife Service and the National Pest Control Association Elizabeth, New Jersey
Dr. William B. Jackson, Conference Chairman
David L. Rintamaa, Conference Assistant
David L. Rintamaa and William B. Jackson, Editors
Another Perspective On Bird Management, John M. Anderson
Another Perspective On Bird Management, John M. Anderson
Bird Control Seminars Proceedings
At an earlier research seminar, Dr. John Seubert observed that available evi¬dence indicated the red-winged blackbird was going to be with us for some time, and perhaps we'd better learn to "live with it." Whereupon a representative of the com growers said if Dr. Seubert really believed that, he'd better look for a new job. I sincerely hope this attitude is not too widespread among corn producers and market¬ers; because if it is, we can expect a lot of pressure designed to force scientists to abandon their search for a safe method of reducing redwing damage. "Risk now, find out …
Bird Management At Airports, Edward R. Ladd
Bird Management At Airports, Edward R. Ladd
Bird Control Seminars Proceedings
In New England, and along the stretch of coastline which starts just south of Canada and goes down through New Jersey, we have half a dozen major or what we call international airports. All but two have bird problems. Most of these airports were built on submarginal land, but what was perhaps some of the best wildlife habitat in the country. So, the birds were there first. When these airports were built, airlines were flying propeller-type aircraft. This type was slow and sluggish compared to the jet aircraft of today. Even though aircraft speeds have increased, the birds still are …
Bird Hazards To Aircraft, Victor E. F. Solmon
Bird Hazards To Aircraft, Victor E. F. Solmon
Bird Control Seminars Proceedings
When I spoke to the third Bird Control Seminar in 1966 on "Ecological Control of Bird Hazards to Aircraft", I reviewed what we had accomplished up to that time. I spoke about the extent of the problem, the bird species involved and the methods we used to make the airports less attractive to birds that created hazards to aircraft.
I wish to discuss today our accomplishments since 1966. I have presented a number of papers on the topic including one with Dr. W. W. H. Gunn, in 1967 at a meeting in the United Kingdom, and others in the United …
Registered Participants: Fifth Bird Control Seminar (1970)
Registered Participants: Fifth Bird Control Seminar (1970)
Bird Control Seminars Proceedings
Names and addresses of 97 participants.
Liquid Scintillators. The Photooxidation Of 2,5-Diphenyloxazole, Margaret E. Ackerman
Liquid Scintillators. The Photooxidation Of 2,5-Diphenyloxazole, Margaret E. Ackerman
Chemistry and Chemical Biology ETDs
Mackay had found that prolonged ultraviolet irradiation of solutions of 2,5-diphenyloxazole (PPO) (1) in toluene resulted in the formation of an insoluble crystalline product 2 which accumulated above the meniscus; the formation of 2 was dependent upon the presence of dissolved oxygen and water in the solutions. The Compound 2 was not a simple degradation product of PPO (1); elemental analysis was compatible with the empirical formula C22H17O5N and the thermal decomposition of 2 gave equal molar amounts of carbon monoxide, benzoic acid, and dibenzamide. The study described in this dissertation was initiated to …
Investigation Of The Alpha-Sub-Gamma Phase In Alnico 6, Cortez Samuel
Investigation Of The Alpha-Sub-Gamma Phase In Alnico 6, Cortez Samuel
Dissertations and Theses
The purpose of this research project was to study the αᵧ phase in Alnico 6. Other phases were studies for comparison. Also the effect of an applied magnetic field on the formation of the αᵧ phase was investigated.
Three single crystals of Alnico 6 were heat treated for one hour--one at 1250°C, one at 1000°C, and one at 800°C--and water-quenched. The microstructure of each sample was observed with the optical microscope, and X-ray diffraction patterns were taken to determine the crystal structure of the phases present.
Several single crystal samples of Alnico 6 were heat treated at 1000°C and furnace-cooled. …
Water Resources News, Volume 2, No. 8, September 1970
Water Resources News, Volume 2, No. 8, September 1970
Water Current Newsletter
Waste Water Reuse
Action on Mercury Pollution
Improving Waste Treatment
Westside Water Resources Study
Pollution Guide for Scout Leaders
Water Pollution Control Need $33-37 Billion
Cleaning Nation's Waterways
Under Water Power Plants
Wanted - Catalog of Products Which Are Potential Waters Polluters
FWQA Wastewater Technology Study
Proposal Deadlines
University of Illinois Annual Water Quality Conference
Research Review
New Publications Received by the Institute
The Ias Bulletin, V4n4, September 1970, Iowa Academy Of Science
The Ias Bulletin, V4n4, September 1970, Iowa Academy Of Science
IAS Bulletin
In this issue:
--- Officers, Directors, and Section Chairmen, 1970-71
--- Roster of Committees
--- New Blood in the Board
--- Board Meeting October 31
--- Publications Committee to Meet
--- annual Meeting Committee to Meet
--- Chemistry Teachers of Central Iowa May Organize
--- Cooperative Project for Two-Year Colleges Underway
--- Request for Information on Environmental Education Materials
--- Academy Sponsors Environmental Education Conference
--- Indiana Academy Sets up Agency to Work with State Government
--- Northern Regional NSTA Conference
--- Correction to the Annual Report and Membership List
--- Gleanings from the Michigan Academy Newsletter
--- UNI Conservationist …
A Quantum Mechanical Investigation Of The Heh3+ Energy Surface, Merle J. Benson
A Quantum Mechanical Investigation Of The Heh3+ Energy Surface, Merle J. Benson
Chemistry and Chemical Biology ETDs
An all-electron ab-initio calculation of the energy surface for the reaction He+ H+3 → HeH+ + H2 was performed using a 9slp gaussian basis set for helium and a 4slp gaussian basis for hydrogen. Reaction paths calculated were of C2V, CS, and C3V symmetry. The lowest energy configuration was found with the molecule in C2V symmetry with the three hydrogen atoms in an equilateral triangle of side length 1.64 a.u. with the helium atom 3.85283 a.u. from an apex of the triangle. The molecule was found to remain in C …
12th Annual Rocky Mountain Spectroscopy Conference
12th Annual Rocky Mountain Spectroscopy Conference
Rocky Mountain Conference on Magnetic Resonance
Program and abstracts from the 12th annual meeting of the Rocky Mountain Spectroscopy Conference, sponsored by the Rocky Mountain Section of the Society for Applied Spectroscopy. Held in Denver, Colorado, August 3-4, 1970.
The Effects Of Various Treatments On Thiamin Diphosphate And Total Thiamin Levels Of Rat Tissues, Dong Hwa Park
The Effects Of Various Treatments On Thiamin Diphosphate And Total Thiamin Levels Of Rat Tissues, Dong Hwa Park
Theses and Dissertations
Tissue thiamin diphosphate was assayed enzymatically utilizing purified brewer's yeast apotransketolase. With this assay ten uumoles of thiamin diphosphate could be detected. Total thiamin was fluorometrically measured. For one to three days rats were placed under conditions of stress, consisting of loud noise treatment, emotional stress, deprivation of paradoxical sleep, and swimming to exhaustion, respectively. The body weight was markedly decreased at the end of the respective experimental periods except with the loud noise treated group, compared with the corresponding controls. Following two to three such consecutive treatments, the adrenal weight also showed a significant increase. Thiamin diphosphate and total …
The Synthesis And Photolysis Of Kreysiginone And The Syntheses And Antibacterial Activity Of 1-Vinyl-3,4-Dihydroisoquinoline Methiodides, Bruce L. Jensen
The Synthesis And Photolysis Of Kreysiginone And The Syntheses And Antibacterial Activity Of 1-Vinyl-3,4-Dihydroisoquinoline Methiodides, Bruce L. Jensen
Dissertations
No abstract provided.
Effects Of Hydrocarbon Chain Length On The Thermodynamics Of Formation Of Bis(N-Alkylamino)-Silver (I) Complex Ions, Don J. Temer
Effects Of Hydrocarbon Chain Length On The Thermodynamics Of Formation Of Bis(N-Alkylamino)-Silver (I) Complex Ions, Don J. Temer
Chemistry and Chemical Biology ETDs
As part of a comprehensive study of the thermodynamics of conformational changes of n-alkyl groups in aqueous solution, the equilibrium constants, enthalpy changes, and entropy changes have been measured for the stepwise formation of bis(n-alkylamino)silver(I) complex ions at 25° in dilute aqueous solution. The attachment of the charged Ag+ to the end of the amine molecule is thought to cause changes in the conformation of the n-alkyl chain. The effects of these conformational changes on the formation constants, enthalpy changes, and entropy changes of the Ag+ complexes are discussed and compared with the effects on the formation constants, …