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Articles 37441 - 37470 of 39785

Full-Text Articles in Physical Sciences and Mathematics

Phosphorus Nutrition Of High Rainfall Pastures, Sulphur Nutrition Of Pastures And Sulphur - Low Rainfall., J S. Yeates, D. M. Deeley, M. F. Clarke, R. A. Deyl, G. T.B. Cockerton Jan 1985

Phosphorus Nutrition Of High Rainfall Pastures, Sulphur Nutrition Of Pastures And Sulphur - Low Rainfall., J S. Yeates, D. M. Deeley, M. F. Clarke, R. A. Deyl, G. T.B. Cockerton

Experimental Summaries - Plant Research

Phosphorus nutrition of high rainfall pastures - Peel Harvey Estuarine System Study and related phosphorus work. (1) Sources, rates, time of application of phosphorous on high rainfall pastures. 81AL5, 81AL6, 82AL10, 82HA32, 83HA26, 83HA27. (2) P sources and rates on sandy soils of the high rainfall areas. 84AL33, 84AL34, 84HA18, 84HA25. (3) Maintenance rate of P on pastures on sandy soils. 84AL32, 84HA17, 84HA24, 84 HA28. Sulphur nutrition of pastures A. Sulphur - high rainfall (2684 EX/4054EX) (1) Sources, rates, time of application of sulphur to pastures. 80AL4, 80AL4B (2) S sources and rates on pastures on sandy soils of …


Molybdenum Nutrition., M. M. Riley Jan 1985

Molybdenum Nutrition., M. M. Riley

Experimental Summaries - Plant Research

Field trials. Residual value of Molybdenum on an acid soil, 81N040. Residual value of Molybdenum on an acid soil, 81M2. Residual value of Molybdenum of an acid soil, 81LG12. Residual value of Molybdenum on an acid soil, 82N07. Residual values of different Molybdenum sources, 84Me10. Residual values of different Molybdenum sources, 84Ge49 Forms and rates of soil and seed applied Molybdenum, 84Me9. Molybdenum requirements of wheat, triticale and lupins, 84Me8. Residual values of Molybdenum with different nitrogen sources, 85M40. The Molybdenum nutrition of various crop and pasture cultivars, 85Mo42. Molybdenum with pre-emergent herbicides, 85TS21. Glasshouse experiments. Reactions of Molybdenum with …


Manganese Deficiency - Plant Nutrition., J. W. Gartrell, T. C. Johnston, M. M. Riley Jan 1985

Manganese Deficiency - Plant Nutrition., J. W. Gartrell, T. C. Johnston, M. M. Riley

Experimental Summaries - Plant Research

Effectiveness of different fertilizers for correcting manganese deficiency in wheat

Apparent critical levels in field experiments

Differences between wheat varieties in ability to absorb and utilize soil and fertiliser manganese under deficiency and near-deficiency conditions in the Great Southern.

84N03, 84N04, 84N05, Mean of 3 experiments, 84N07, 84N06, 85N068, 85N064, 85N065, 85N066, 85N067, 85N069, 85LG36.


Residual Value Of Legumes., J. Hamblin, R. Delane, G. Adam, A Bishop Jan 1985

Residual Value Of Legumes., J. Hamblin, R. Delane, G. Adam, A Bishop

Experimental Summaries - Plant Research

This report examines the residual value of lupins and several other species grown at ECRS in 1984 on the yield of wheat in 1985 (85 C 25). 85 C 46 examined the residual effect of several lupin species and varieties grown under different nutritional treatments in 1984 at two sites differing in rainfall on wheat yields in 1985. 85 C 47 examines the interaction between levels of applied potassium and deep cultivation (ripping) on the yield of wheat at a low K, dry site.

Report on 85 C 27, 85 C 46 and 85 C 47.


Effect Of Soil Type On Relative Crop Yields, Effect Of Seeding Time On Pea And Lupin Yields, Effect Of Seeding Rate On Field Pea Yields, Studies In Legume Nodulation And Response Of Cereals In The Year Following Legumes., R. French Jan 1985

Effect Of Soil Type On Relative Crop Yields, Effect Of Seeding Time On Pea And Lupin Yields, Effect Of Seeding Rate On Field Pea Yields, Studies In Legume Nodulation And Response Of Cereals In The Year Following Legumes., R. French

Experimental Summaries - Plant Research

Trials 85M36, 85M37, 85M38, 85M39. Trials 8SJE17, 85KA62, 85N20, 85ME42, 85ME43, 85ME44, 85WH48. Trials 85KA63, 85M33. Trials 85M32, 85M34, 85M35. Trials 84M50, 84M51, 84M52.


Grain Legume Agronomy Programme., G. H. Walton Jan 1985

Grain Legume Agronomy Programme., G. H. Walton

Experimental Summaries - Plant Research

Lupin agronomy, 85AL4, 85AL6, 85M05, 85PE13, 81M029, 81M030, 81M027. Grain legume crop comparisons, 85LG23, 85LG24, 85LG25, 85E23, 85GE28, 85C71, 85ME35, 85KA7, 85E2, 85N5, 85N04, 85SG2, 85E34, 85LG38, 85LG40, 85MN2, 85MD25, 85MN1.


Stubble Retention Effects On Soil Water Storage And Yield., D. Tennant Jan 1985

Stubble Retention Effects On Soil Water Storage And Yield., D. Tennant

Experimental Summaries - Plant Research

Merredin Research Station on red brown earth soil type, 84M1, 84M5. Summer data. Winter data.


Iowa Academy Of Science Directory, 1985-86: Officers, Committees, And Membership Roster, Iowa Academy Of Science Jan 1985

Iowa Academy Of Science Directory, 1985-86: Officers, Committees, And Membership Roster, Iowa Academy Of Science

Iowa Academy of Science Documents

Table of Contents:

Board of Directors ... 3
Program Directors ... 4
Section Chairs ... 5
Section Vice Chairs ... 8
Committees ... 11
Award Recipients ... 28
Past Presidents ... 30
Membership Roster ... 32


Iowa Science Teacher Section Fall Conference, 1985, Iowa Academy Of Science Jan 1985

Iowa Science Teacher Section Fall Conference, 1985, Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

--- Featured Speaker: George Vanerkurr
--- Iowa Academy of Science 1985-86 Officers
--- Sessions
--- Iowa Science Teachers Outstanding Service Award for 1985: Roy D. Unruh
--- Presidential Award for Excellence in Science Teaching 1985: Donald A. Schaefer
--- Iowa Academy of Science Excellence in Science Teaching Awards, Spring 1985
--- Exhibitors
--- 1985 Fall Conference Committee


Abundance, Seasonality And Community Structure Of Fishes On The Mid-Atlantic Bight Continental Shelf, James Alden Colvocoresses Jan 1985

Abundance, Seasonality And Community Structure Of Fishes On The Mid-Atlantic Bight Continental Shelf, James Alden Colvocoresses

Dissertations, Theses, and Masters Projects

Cluster analyses of seasonal (spring and fall) National Marine Fisheries Service Groundfish Survey bottom trawl catches on the Middle Atlantic Bight continental shelf revealed consistent species associations and faunal zones over a nine year period during. Boundaries between faunal zones tended to follow isotherms on the inner portions of the shelf and isobaths along the outer shelf. During the late winter/early spring, four faunal zones were identified: a northern inner and middle shelf zone extending from Cape Cod southward to about Delaware Bay, a northern middle and outer shelf zone offshore of the first zone, a southern middle and outer …


Community Ecology, Robert K. Rose, Elmer C. Birney Jan 1985

Community Ecology, Robert K. Rose, Elmer C. Birney

Biological Sciences Faculty Publications

COMMUNITIES with Microtus tend to be structurally simple, usually grasslands or tundra, and to have no more than two species of Microtus and rarely more than six species of small mammals. Microtus often dominates both numerically and in total small mammal biomass, especially at higher latitudes. The small mammal community is most influenced by Microtus through its fluctuations in density, and thus also in biomass, by its relatively high level of diurnal activity, and by its year-round activity. Other species of small mammals may be adversely affected because Microtus usually is larger and behaviorally dominant and also because the mere …


Soil Acidity - High Rainfall Pastures., J. S. Yeates, M. F. Clarke, D. A. Tooke, R. A. Deyl Jan 1985

Soil Acidity - High Rainfall Pastures., J. S. Yeates, M. F. Clarke, D. A. Tooke, R. A. Deyl

Experimental Summaries - Plant Research

Aims of the Project (i) To establish the current pH of the cultivated soils of the high rainfall areas of south-west Western Australia, and the extent to which pH has altered since clearing. (ii) To examine the responsiveness of old land pastures with low current soil pH levels (< 5.5 water) to applied lime. (iii) To relate the responsiveness of subterranean clover-based pastures to measured soil parameters. 80BU14, 81AL10, 81AL12, 81BU18, 81BY18, 81BY25, 81BY26, 82AL4, 82AL5, 82AL55, 82BU7, 82HA35, 82HA36, 82PE1, 82MA20, 83AL7, 83AL9, 83AL10, 83ALll, 83BY29, 84BU9, 84BU10, 84BY37, 84HA21, 84HA37, 84MA21.


Low Tillering Cereals, Early Maturity Of Cereals, Cereal Variety And Reduced Branching Lupins., R. Delane, J. Hamblin Jan 1985

Low Tillering Cereals, Early Maturity Of Cereals, Cereal Variety And Reduced Branching Lupins., R. Delane, J. Hamblin

Experimental Summaries - Plant Research

Trial 85C62 - growth and water use of low tillering cereals. Trial 85C62 - yield potential of low tillering cereals. Trial WEUNI - response of low tillering breeding lines and standard varieties to sowing rate. Trial 85C45 - effect of flowering date, seeding rate, deep tillage and applied nitrogen on yield of barley. Trial 85C61 - wheat variety x management interaction on sandplain. Trial 85C55 - growth and water use of reduced branching lupins. Trial 85C56 - normal and reduced branching lupins - planting density response.


Statistical Services, Jane Speijers, Australian Co-Operation With The National Agricultural Research Project, Thailand. Jan 1985

Statistical Services, Jane Speijers, Australian Co-Operation With The National Agricultural Research Project, Thailand.

All other publications

2. TERMS OF REFERENCE

To achieve familiarity with the existing resources for biometrical work within the Department of Agriculture both at Bangkhen and at the regional centres - and to gain an understanding of the present systems whereby biometricians are involved in designing experiments and analysing results. This will involve visits to research stations and discussions with both research directors and scientists.

2.1 To become informed on the planned improvements in biometrical services for regional research centres to be carried out through the Thai/World Bank, National Agricultural Research Project (NARP).

2.2 Against the background of items 2.1 and 2.2 above, …


A Systematic Revision Of The South American Freshwater Stingrays (Chondrichthyes: Potamotrygonidae) (Batoidei, Myliobatiformes, Phylogeny, Biogeography), Ricardo De Souza Rosa Jan 1985

A Systematic Revision Of The South American Freshwater Stingrays (Chondrichthyes: Potamotrygonidae) (Batoidei, Myliobatiformes, Phylogeny, Biogeography), Ricardo De Souza Rosa

Dissertations, Theses, and Masters Projects

Three genera are recognized in the family Potamotrygonidae of neotropical freshwater stingrays: Potamotrygon, Paratrygon, and Plesiotrygon, the latter being described as a new genus. Potamotrygon is polytypic, and both Paratrygon and Plesiotrygon are monotypic, as far as known. The family name Potamotrygonidae has priority over Paratrygonidae Gill. Nineteen previously described species of Potamotrygonidae are recognized: Paratrygon aiereba, Potamotrygon brachyura, P. castexi, P. constellata, P. dumerilii, P. falkneri, P. henlei, P. histrix, P. humerosa, P. leopoldi, P. magdalenae, P. motoro, P. ocellata, P. orbignyi, P. schroederi, P. schuemacheri, P. scobina, P. signata, and P. yepezi. One additional specific name is established …


Microbial Manganese Reduction By Enrichment Cultures From Coastal Marine Sediments, David J. Burdige, Kenneth H. Nealson Jan 1985

Microbial Manganese Reduction By Enrichment Cultures From Coastal Marine Sediments, David J. Burdige, Kenneth H. Nealson

OES Faculty Publications

Manganese reduction was catalyzed by enrichment cultures of anaerobic bacteria obtained from coastal marine sediments. In the absence of oxygen, these enrichment cultures reduced manganates when grown on either lactate, succinate, or acetate in both sulfate-free and sulfate-containing artificial seawaters. Sodium azide as well as oxygen completely inhibited microbial manganese reduction by these enrichment cultures, whereas molybdate had no effect on them. The addition of nitrate to the medium slightly decreased the rate of Mn2+ production by these enrichment cultures. These findings are consistent with the hypothesis that the manganese-reducing organisms in these enrichment cultures use manganates as terminal …


Influence Of Soil Acidity On Barley Production., P. J. Dolling, A. R. Little Jan 1985

Influence Of Soil Acidity On Barley Production., P. J. Dolling, A. R. Little

Experimental Summaries - Plant Research

A soil survey of 38 sites in barley growing areas of Western Australia was carried out in 1984. It was found that 53% of topsoils surveyed had a pH less than 5.5, acid enough to suspect barley yields might be affected. In 1985 an extensive field trial proqramme was established at 9 sites. The sites were selected from the 1984 survey and they varied in their level of acidity from mild to severe. 85NA, 85NA2, 85NA5, 85NA4, 85NA3, 85KA3, 85KA4, 85KA5, 85KA6, 83N046,


A Land Resource Survey Of The Fall Point Coastline, Broome, W.A., P A. Hesp, P J. Curry Jan 1985

A Land Resource Survey Of The Fall Point Coastline, Broome, W.A., P A. Hesp, P J. Curry

Resource management technical reports

The purpose of this study was to find a suitable location for a bird observatory and provide adequate coastal land resource data for the area. The main selection criteria and conditions were: the location was closely adjacent to major wader roosting and feeding sites; all-seasons access was required; the location provided a site of around 2 1/2 hectares to provide space for one or more buildings, camp ground and associated facilities ; anticipated access tracks, site developments and levels of use.


The Taarblin Experience : A Planned Approach To Soil Conservation, Greg Astbury, Owner/Manager Of Taarblin, Tim Negus Jan 1985

The Taarblin Experience : A Planned Approach To Soil Conservation, Greg Astbury, Owner/Manager Of Taarblin, Tim Negus

Bulletins 4000 -

Many farms in Western Australia were cleared and developed before there was a full and clear understanding of the effects of bush clearing - that is salinization of soil and water supplies, wind and water erosion, waterlogging and soil structure decline. The productive capacity and inherent problems of the different soil types was also largely unknown.

Modern-day Conservation Farm Planning aims to provide a blue-print for the redevelopment of properties to ensure long term soil fertility, to prevent soil erosion and degradation by waterlogging and salinity. It also provides for a spread of reliable stock watering points and more efficient …


Energy Utilization Model For Silver Perch, Bairdiella Chrysoura (Bioenergetics, Sciaenidae, Growth, Eelgrass, Chesapeake Bay), Hugh Anthony Brooks Jan 1985

Energy Utilization Model For Silver Perch, Bairdiella Chrysoura (Bioenergetics, Sciaenidae, Growth, Eelgrass, Chesapeake Bay), Hugh Anthony Brooks

Dissertations, Theses, and Masters Projects

An energetics model was constructed as an alternative method to length frequency analysis for the estimation of growth for juvenile silver perch, Bairdiella chrysoura. The model approach was adopted since estimation of juvenile estuarine fish growth by only collecting length or weight frequency data is difficult due to the large bodies of water and variety of microhabitats that must be regularly sampled over short time intervals. Field and laboratory data was included in analysis of model compartments for growth, metabolism, food intake and energy loss in waste products. Food habit studies indicated that silver perch is a planktivore that feeds …


Community Structure Of Demersal Fishes On The Inshore U.S. Atlantic Continental Shelf: Cape Ann, Ma. To Cape Fear, N.C. (United States, Cluster Analysis, Massachusetts, North Carolina), William C. Phoel Jan 1985

Community Structure Of Demersal Fishes On The Inshore U.S. Atlantic Continental Shelf: Cape Ann, Ma. To Cape Fear, N.C. (United States, Cluster Analysis, Massachusetts, North Carolina), William C. Phoel

Dissertations, Theses, and Masters Projects

Numerical classification analyses (clustering) of spring, summer and fall National Marine Fisheries Service bottom trawl catches on the inshore continental shelf between Cape Ann, Ma. and Cape Fear, N.C., showed consistent species associations and faunal zones over a three year period. Analysis of a data set created by combining all nine survey cruises also produced consistent species associations, however sites clustered by seasons as well as by geographic area. The three faunal provinces of the U.S. east coast (Gulf of Maine, Middle Atlantic Bight and South Atlantic Bight) were represented in the study area, as were the seasonal faunal barriers …


Monogeneans From The Southern Pacific Ocean: Polyopisthocotyleids From The Australian Fishes, The Subfamily Microcotylinae, W. A. Dillon, William J. Hargis Jr., Antonio E. Harrises Jan 1985

Monogeneans From The Southern Pacific Ocean: Polyopisthocotyleids From The Australian Fishes, The Subfamily Microcotylinae, W. A. Dillon, William J. Hargis Jr., Antonio E. Harrises

Reports

This seventh in a series of monogenetic trematodes from the Southern Pacific Ocean discusses nine species of Monogenea from Australian waters. Redescriptions are given for Microcotyle arripis Sandars, 1945, M. bassensis Murray, 1931, M. helotes Sandars, 1944, M. nemadactylus Dillon and Hargis, 1965, M. neozealanicus Dillon and Hargis, 1965, M. odacis Sandars, 1945, M. pentapodi Sandars, 1944, and M. temnodontis Sandars, 1945. New locality records are reported for all of the above. New host records are established for Microcotyle bassensis Murray, 1931 and M. neozealanicus Dillon and Hargis, 1965. Microtyle sp. from the gills of Acanthopagrus australis (Gunther) is reported.


A Bioeconomic Model Of The Middle Atlantic Surf Clam (Spisula Solidissima) Fishery, Thomas M. Armitage Jan 1985

A Bioeconomic Model Of The Middle Atlantic Surf Clam (Spisula Solidissima) Fishery, Thomas M. Armitage

Dissertations, Theses, and Masters Projects

A bioeconomic simulation model of the middle Atlantic surf clam (Spisula solidissima) fishery has been developed from a survey of biological and econometric relationships. While identifying the biological input parameters available in the literature, the economic submodel of the fishery has been developed with price and landings time series data, and with data obtained through the use of survey questionnaires and interviews with surf clam fishermen and processors. Alternative management scenarios in the fishery have been evaluated from industry costs in both the harvesting and processing sectors and analysis of the demand for raw product confronting surf clam fishermen. Multiple …


Comparison Of Daily Growth Rates Of The Mummichog, Fundulus Heteroclitus In Habitats Of Different Salinity Regimes, James G. Hoff Jan 1985

Comparison Of Daily Growth Rates Of The Mummichog, Fundulus Heteroclitus In Habitats Of Different Salinity Regimes, James G. Hoff

Dissertations, Theses, and Masters Projects

No abstract provided.


Macrobenthic Community Structure At The Entrance To The Chesapeake Bay, Roberto Javier Llansa Jan 1985

Macrobenthic Community Structure At The Entrance To The Chesapeake Bay, Roberto Javier Llansa

Dissertations, Theses, and Masters Projects

No abstract provided.


Achievements Of Soviet Scientists In Investigations Of The Helminthofauna Of Marine Animals Of The World Ocean, S. L. Delamure, A. S. Skriabin Jan 1985

Achievements Of Soviet Scientists In Investigations Of The Helminthofauna Of Marine Animals Of The World Ocean, S. L. Delamure, A. S. Skriabin

Reports

During the last 40 yr (1940 to 1980), Soviet helminthologists have examined about 9,680 specimens of marine mammals In the Northern and Southern Hemispheres, using uniform or standard methods In most cases. As a result, 20 new species of trematodes [digeneids], 19 cestodes, 9 acanthocephalans, and 23 nematodes have been described. Also several new supraspecific taxa have been established. Systematic revisions of Campuidae, Tetrabothriidae, Pseudallidae, and Anisakidae have been undertaken. The morphology, adaptation of helminths to their environments and to the host's mode of life, Infection rates and characteristics, and the seasonal and age dynamics of the helmlnthofauna have been …


Ua35/11 Student Honors Research Bulletin, Wku Honors Program Jan 1985

Ua35/11 Student Honors Research Bulletin, Wku Honors Program

WKU Administration Documents

The WKU Student Honors Research Bulletin is dedicated to scholarly involvement and student research. These papers are representative of work done by students from throughout the university.

  • Whicker, Garth. Agriculture and the Development of Malaysia
  • McGaha. Rape, Passion, Lechery, Usury, Incest, Murder and other Matters in The Ravenger's Tragedy
  • Harrison, Robert. It was a Day of Very General Awakening . . : Reformation and Revival in Russellville, Kentucky
  • King, Betty. An Affirmative Decision for James's Isabel Archer
  • Sutton, Joyce. Sex Bias in Performance of Women
  • Logsdon, Doug. Poe's Women
  • Yoder, Nate. Emily Dickinson and Her Puritan Heritage
  • Davis, Aleen. Jay …


Oyster Spatfall In Virginia Rivers: 1984 Annual Summary, James Whitcomb Jan 1985

Oyster Spatfall In Virginia Rivers: 1984 Annual Summary, James Whitcomb

Reports

The Virginia Institute of Marine Science (VIMS) conducts weekly surveys from June through early October to obtain oyster spatfall information. Spat counts are made on oyster shells strung on wire and suspended from stakes on public and private beds. The number of spat on shells is counted each week of the spawning season to determine the potential of a particular area for receiving a strike and to predict the most likely period the strikes will occur.


Analysis Of Arkansas Fur Harvest Records - 1942-1984: I. State And Regional Accounts, Gary A. Heidt, James H. Peck, Tiny Sheldon, Joseph D. Clark Jan 1985

Analysis Of Arkansas Fur Harvest Records - 1942-1984: I. State And Regional Accounts, Gary A. Heidt, James H. Peck, Tiny Sheldon, Joseph D. Clark

Journal of the Arkansas Academy of Science

Fur harvest records maintained by the Arkansas Game and Fish Commission from 1942-1984 summarized the number of pelts sold by region (Ozark Mountains, Ouachita Mountains, Gulf Coastal Plain, and Mississippi Delta) and the average price per pelt for 16 furbearers. Analysis of these records showed that in the 1979-80 trapping season (the record year for both harvest and value both in Arkansas and the nation), the value of the Arkansas fur harvest ranked 14th nationally (2.12% of total national value). Fur harvests in Arkansas were high in the 1940's, declined in the 1950's and 1960's and then experienced a rapid …


Analysis Of Arkansas Fur Harvest Records - 1942-1984: Ii. Species Accounts, James H. Peck, Joseph D. Clark, Tiny Sheldon, Gary A. Heidt Jan 1985

Analysis Of Arkansas Fur Harvest Records - 1942-1984: Ii. Species Accounts, James H. Peck, Joseph D. Clark, Tiny Sheldon, Gary A. Heidt

Journal of the Arkansas Academy of Science

Fur harvest records were maintained by the Arkansas Game and Fish Commission on the following 16 furbearers: badger, beaver, bobcat, eastern spotted skunk (civet), coyote, gray fox, long-tailed weasel, mink, muskrat, nutria, opossum, raccoon, red fox, red wolf, river otter, and striped skunk. These harvest records were analyzed for each species in terms of mean pelt price and numbers of pelt sold by region (Ozark Mountains, Ouachita Mountains, Gulf Coastal Plain, and Mississippi Delta) per year. Historical or biological influences important in interpreting species accounts are presented.