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Articles 36871 - 36900 of 39790
Full-Text Articles in Physical Sciences and Mathematics
Changes In The Morphometry Of Las Vegas Wash And The Impact On Water Quality, Richard A. Roline, James J. Sartoris, U.S. Bureau Of Reclamation
Changes In The Morphometry Of Las Vegas Wash And The Impact On Water Quality, Richard A. Roline, James J. Sartoris, U.S. Bureau Of Reclamation
Publications (WR)
Las Vegas Wash, a natural wash east of Las Vegas, Nevada, carries stormwater, groundwater drainage, and sewage effluent from two sewage treatment plants to Lake Mead. Over 80 percent of the normal discharge of approximately 3.4 m3/s (120 ft3/s) consists of effluent from the City of Las Vegas and Clark County sewage treatment plants. Beginning in the 1950s, a large wetland area developed along the wash that supported waterfowl populations and contributed to some water quality transformations. Heavy rains and subsequent flooding in the area in 1983 and 1984 resulted in erosion and channelization that greatly …
A Mass Mortality Of Fishes In Lake Titicaca (Peru-Bolivia) Associated With The Protozoan Parasite Ichthyophthirius Multifiliis, Wayne A. Wurtsbaugh, R. Alfaro
A Mass Mortality Of Fishes In Lake Titicaca (Peru-Bolivia) Associated With The Protozoan Parasite Ichthyophthirius Multifiliis, Wayne A. Wurtsbaugh, R. Alfaro
Watershed Sciences Faculty Publications
In December 1981 , an epizootic of the protozoan parasite Ichthyophthirius multifiliis killed an estimated 18 million killifish Orestias spp. in Lake Titicaca, a high-altitude tropical system. Of the dead fish collected, 93% were adult O. agassii, a commercially important species that is abundant in the littoral zone. Juvenile Orestias spp., pelagic species, and some other littoral zone fis hes were slightly affected. lchthyophthirius multifiliis was probably introduced with exotic fishes brought to Lake Titicaca in the 1940s and 1950s.
Pasture Cultivar Comparison On Acid Wodjil Soil - Large Plots., Bradley Nutt, M. K. Laslett
Pasture Cultivar Comparison On Acid Wodjil Soil - Large Plots., Bradley Nutt, M. K. Laslett
Experimental Summaries - Plant Research
Trial 88TS64
Location: Latham
To evaluate the effect of various legume pasture cultivars on pasture production on acid wodjil soils.
Murex Medic Trials And Redlegged Earthmite Impacts, D. Gillespie
Murex Medic Trials And Redlegged Earthmite Impacts, D. Gillespie
Experimental Summaries - Plant Research
1. Selection and development of early maturing varieties of murex medic.
Small plot trials were established at six medium and low rainfall sites in autumn 1988. All were hand sown 2Mx3Mplots sown at 50 kg/ha except for the Merredin site which was drill sown at 10 kg/ha.
Locations: Badgebup, Gabalong, Kellerberrin, Merredin, North Quairading, Pingrup.
2. Mid season murex medic evaluation.
Locations: Avondale, Cranbrook, Darkan and New Norcia
This programme aims to identify superior varieties to Zodiac which was released in 1988.
3. Management of murex medic.
Locations: Arthur River
After three years of drought the large grazing trial at …
Crop Establishment Methods For Lupin Disease Management, M Sweetingham, A Pelham, M Judges
Crop Establishment Methods For Lupin Disease Management, M Sweetingham, A Pelham, M Judges
Experimental Summaries - Plant Research
Pleiochaeta root rot, 88WH33, 88M38, 88WH34, 88M39, 87WH45, 87M52.
Brown spot and Pleiochaeta root rot, 88M40, 88C4, 88ME59, 88NO73, 88ME60, 88SC33.
Rhizoctonia root and hypocotyl rots, 88NO74, 88GE53, 88GE31, 88E38.
Fungicide drench trials, 88NO92.
Tolerance Of New Cereal Varieties To Current Herbicides., D Bowran
Tolerance Of New Cereal Varieties To Current Herbicides., D Bowran
Experimental Summaries - Plant Research
Trial 88EB26
While this site had a low population of weeds no yield increases were apparent. Few variety differeces were apparent at this site, though Hoegrass + Glean reduced yield of Crabook significantly.
Trial 88EC27
Few crop effects were experienced at this site. The major effect was due to variable fertility in replicates 3 and 4 and this resulted in the somewhat uyp and down nature for the Glean, Logran and hoegrass results.
Trial 88SC32
This site had a major problem with soil acidity and only triticale and oats grew satisfactorily. Barley was strongly influenced by the acidity and many …
Tolerance Of Recommended Cereal Varieties Of New Herbcides, David Bowran
Tolerance Of Recommended Cereal Varieties Of New Herbcides, David Bowran
Experimental Summaries - Plant Research
88EC28, 88SC31, 88N73.
Pea Variety Tolerances To Herbicides, David Bowran
Pea Variety Tolerances To Herbicides, David Bowran
Experimental Summaries - Plant Research
88ME118.
This site was variably infested with a population of wild oats and self-sown cereals.
Iowa Academy Of Science Directory, 1988-89: Officers, Committees, And Membership Roster, Iowa Academy Of Science
Iowa Academy Of Science Directory, 1988-89: Officers, Committees, And Membership Roster, Iowa Academy Of Science
Iowa Academy of Science Documents
Table of Contents:
Board of Directors ... 5
Program Directors ... 6
Editors ... 7
Committees ... 9
Sections ... 24
Award Recipients ... 54
Past Presidents ... 56
Membership Roster ... 57
Constitution and Bylaws ... 70
The I.A.S. Bulletin, V22n1, January 1988, Iowa Academy Of Science
The I.A.S. Bulletin, V22n1, January 1988, Iowa Academy Of Science
IAS Bulletin
In this issue:
--- A Note from the Editor
--- Proceedings and Chem Abstracts
--- AD HOC Publications Committee Discharged
--- AAAS Annual Meeting
--- Centennial Meeting
--- Reflections
--- Natural Resources Workshop for Women
--- Laser Laboratory
--- Ames Laboratory Recognized
--- Soil and Water Conservation Society
--- Section Reorganization
--- Iowa Academy of Science Nomination for Promotion to Fellow
--- The Long Range Planning Committee Asks for Your Ideas
--- IAS Planning Questionnaire
--- Membership Facts
The Iowa Science Teachers Fall Conference, 1988, Iowa Academy Of Science
The Iowa Science Teachers Fall Conference, 1988, Iowa Academy Of Science
Iowa Academy of Science Documents
Contents:
Map ... 3
Keynote Speaker: Jim Fowler ... 4
Sessions ... 5
Application for Membership ... Centerfold
Registration Forms ... Centerfold
Santa Clara Magazine, Volume 30 Number 2, Winter 1988, Santa Clara University
Santa Clara Magazine, Volume 30 Number 2, Winter 1988, Santa Clara University
Santa Clara Magazine
10 - UNDERSTANDING THE NEW SOVIETS A first-person account of the Soviet Union today by the author of two books on Russia. By Jim Garrison
16 - HOW TO GET INTO ADVERTISING An English graduate goes from waiting tables to a senior vice presidency on Madison Avenue. By Barbara Boyle
20 - 1988 ECONOMIC FORECAST For 15 years, Mario Belotti's been making forecasts that are amazingly accurate. By Mario Belotti
22 - SANTA CLARA AND THE POPES Reviewing historic links with Rome shows how it affected SCU. By Gerald McKevitt, S.J.
26 - SCU'S ETERNAL FLAIM Biology professor Frank Flaim …
Evaluation Of Possible Reproductively Mediated Character Displacement In The Crayfishes, Orconectes Rusticus And O. Sanbornii, Mark J. Butler Iv
Evaluation Of Possible Reproductively Mediated Character Displacement In The Crayfishes, Orconectes Rusticus And O. Sanbornii, Mark J. Butler Iv
Biological Sciences Faculty Publications
Orconectes rusticus is replacing several species of crayfishes in north-central and northeastern North America, including O. sanbornii in Ohio. Recent evidence suggests that the species replacements may be driven by asymmetrical reproductive success favoring O. rusticus. Nonetheless, some sympatric associations appear locally persistent. Because crayfish demonstrate size assortative mating and there is a disparity in the sizes of the species, further divergence in the sizes of the species in sympatry could enhance reproductive isolation, ultimately providing a mechanism for character displacement. To test this hypothesis the size differentials between crayfish collected from allopatric and sympatric populations in east-central Ohio …
Brome Grass Population Dynamics, A H. Cham
Brome Grass Population Dynamics, A H. Cham
Experimental Summaries - Plant Research
To identify the level of brome grass under various crop rotation systems. To design the best control system. To understand some of the effects of changing rotation systems. 86C1
Comparative Analysis Of Sea Scallop Escapement/Retention And Resulting Economic Impacts, William D. Dupaul, Edward J. Heist, James E. Kirkley
Comparative Analysis Of Sea Scallop Escapement/Retention And Resulting Economic Impacts, William D. Dupaul, Edward J. Heist, James E. Kirkley
Reports
During the months of June and September 1988, gear experiments were conducted aboard the F/V Carolina Dawn and Carolina Capes. The primary objective of the experiments was to assess the technical efficiency and size selectivity of 3.5-inch ring dredges relative to the current commercially-used 3.0-inch ring dredges. Secondary objectives were to analyze the economic and regulatory ramifications of using 3.5-inch ring dredges to control the age-at-capture and enhance the yield-per- recruit.
A Monograph Of The Genus Polyphylla Harris In America North Of Mexico (Coleoptera: Scarabaeidae: Melolonthinae), Ronald M. Young
A Monograph Of The Genus Polyphylla Harris In America North Of Mexico (Coleoptera: Scarabaeidae: Melolonthinae), Ronald M. Young
Bulletin of the University of Nebraska State Museum
The North American species of the genus Polyphylla Harris, 1841, are defined and revised for the first time since Fall (1928). All name bearing types were examined except those of P. oklahomensis Hatch and P. subvittata LeConte (synonyms of P. hammondl), which are lost. A lectotype is designated for P. gracilis Horn, and neotypes for P. decemlineata (Say), P. occidentalis (L.), and P. variolosa (Hentz). New synonyms of P. decemlineata are P. comstockiana von Bloeker, P. matrona Casey, and P. potsiana Casey. New synonyms of P. crinita …
Clearcutting As A Management Practice In Maine Forests, Irland Group
Clearcutting As A Management Practice In Maine Forests, Irland Group
Maine Collection
Clearcutting As A Management Practice in Maine Forests : Report to the Maine Department of Conservation, Forests for the Future Program.
by The Irland Group
Maine Department of Conservation, Augusta, Maine. 1988.
Contents:( Part I ) Introduction / What is Clearcutting? / Environmental Effects of Clearcutting / Conclusions / Recommendations
Contents:(Part II) Introduction / Public Policy / Definition / Spruce-Fir Siviculture / Northern Hardwood Silviculture / White Pine Silviculture / Aspen-Birch Silviculture / Regeneration / The Brush Stage / Artificial Regeneration / Budworm / Aesthetics / Water Resources / Wildlife / Nutrients and Soil / Naturalistic Silviculture / Logging / …
The Concept Of Prime Agricultural Land : A Western Australian Perspective, Vivian T. Read
The Concept Of Prime Agricultural Land : A Western Australian Perspective, Vivian T. Read
Resource management technical reports
No abstract provided.
Salinity In Western Australia : A Situation Statement, V T. Read
Salinity In Western Australia : A Situation Statement, V T. Read
Resource management technical reports
The Select Committee on Salinity was established by the Legislative Council of the Parliament of Western Australia in November 1987 to inquire into and report on salinity in Western Australia giving particular regard to:
• what action has, or is being taken, to assess the magnitude of the problem;
• what form of action can, or should, be taken to control salinity;
• what legislative of administrative acts or incentives to the private sector are necessary or desirable to assist further in controlling or eradicating salinity.
Members appointed to the Select Committee were the Honourable David Wordsworth (Chairman), the Honourable …
Problem Districts For On-Farm Water Supply In South Western Australia, I A F Laing, R G. Pepper, A F. Mccrea
Problem Districts For On-Farm Water Supply In South Western Australia, I A F Laing, R G. Pepper, A F. Mccrea
Resource management technical reports
No abstract provided.
The Use Of Permeability, Conductivity, Conductance And Resistance In The Description Of Water Movement In Soils And Plants, H Borg
Resource management technical reports
Permeability, conductivity, conductance and resistance are important parameters in the description of water movement in soils and plants. These terms are related, but not synonymous. Permeability is only a function of the flow pathgeometry of the medium, while conductivity also depends on the fluid involved. Conductance, in addition, takes the size of the medium into account. Resistance is simply the inverse ofconductance. By applying the definition of resistance, it isshown that Darcy's law and Ohm's law are equivalent. Conductance and resistance relate volume flow rate to a potential difference, but to relate volume flux (volume flowrate per unit area) to …
Evaluating Prime Agricultural Land In The Shire Of Manjimup, V T. Read
Evaluating Prime Agricultural Land In The Shire Of Manjimup, V T. Read
Resource management technical reports
No abstract provided.
Consequences Of Thymidine Catabolism For Estimates Of Bacterial Production: An Example From A Coastal Marine Sediment, Kevin R. Carman, Fred C. Dobbs, James B. Guckert
Consequences Of Thymidine Catabolism For Estimates Of Bacterial Production: An Example From A Coastal Marine Sediment, Kevin R. Carman, Fred C. Dobbs, James B. Guckert
OES Faculty Publications
Radioactively labeled thymidine (TdR) has been used extensively to measure bacterial production in aquatic environments, but critical assumptions of the TdR technique often have gone untested. In this study of a coastal marine sediment, the metabolic fate of methyl [3H]TdR and methyl [14C]TdR was at variance with the assumptions necessary for determining bacterial production. Only 2% of incorporated radioactivity was recovered in the DNA fraction of TCA-insoluble material following time-course incubations of l-300 min. At least the methyl group of TdR was extensively catabolized, as shown by copious production of 14C02. The temporal …
Distribution And Taxonomy Of Endolithic Algae Occurring In The Shells Of Crassostrea Virginica Throughout The Lower James River, Virginia, Ellen Pafford Snyder
Distribution And Taxonomy Of Endolithic Algae Occurring In The Shells Of Crassostrea Virginica Throughout The Lower James River, Virginia, Ellen Pafford Snyder
Dissertations, Theses, and Masters Projects
No abstract provided.
Response Of A Partially Mixed Coastal Plain Estuary To Storm Events, Daniel Ary Hepworth
Response Of A Partially Mixed Coastal Plain Estuary To Storm Events, Daniel Ary Hepworth
Dissertations, Theses, and Masters Projects
No abstract provided.
The Effects Of At-Sea Killing And Storage Methods On The Quality Of Recreationally-Caught Northern Bluefin Tuna, Thynnus Thynnus, Nancy Jeanne Chartier
The Effects Of At-Sea Killing And Storage Methods On The Quality Of Recreationally-Caught Northern Bluefin Tuna, Thynnus Thynnus, Nancy Jeanne Chartier
Dissertations, Theses, and Masters Projects
No abstract provided.
Swimming Responses Of Larvae Of Three Mactrid Bivalves To Different Salinity Gradients, Bernardita Campos Maia
Swimming Responses Of Larvae Of Three Mactrid Bivalves To Different Salinity Gradients, Bernardita Campos Maia
Dissertations, Theses, and Masters Projects
No abstract provided.
Assessing Environmental Stress On The Loggerhead Sea Turtle (Caretta Caretta) In Virginia Waters, Sarah A. Bellmund
Assessing Environmental Stress On The Loggerhead Sea Turtle (Caretta Caretta) In Virginia Waters, Sarah A. Bellmund
Dissertations, Theses, and Masters Projects
No abstract provided.
Seasonal Changes In Fecundity Of Oysters Crassostrea Virginica (Gmelin): From Four Oyster Reefs In The James River, Virginia, Carrollyn Cox
Seasonal Changes In Fecundity Of Oysters Crassostrea Virginica (Gmelin): From Four Oyster Reefs In The James River, Virginia, Carrollyn Cox
Dissertations, Theses, and Masters Projects
No abstract provided.
Ua35/11 Wku Student Honors Research Bulletin, Wku University Honors Program
Ua35/11 Wku Student Honors Research Bulletin, Wku University Honors Program
WKU Administration Documents
The Western Kentucky University Student Honors Research Bulletin is dedicated to scholarly involvement and student research. These papers represent work done by students from throughout the university.
- Kesselring, Marcia. Attitudes Toward the Need for Computer Literacy
- Tuck, Janna & Karen Wiggins. Methylation and Confirmation of PGE
- Lewis, Gloria. John Donne's Attitude Toward Love
- Johnson, Linda. International Telecommunications Trade with Japan
- Sharpe, Greg. Precipitation Patterns in Bowling Green, Kentucky, 1980-1985
- Smith, Sandy. Religion and the Media: Alliance or War?
- Bell, Suzanne. Early Secret Involvement of the United States Military in Cambodia
- Scariot, Linda. Parental Divorce and Childhood Emotional Disturbances
- Daniel, Janice. …