Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Kentucky (2599)
- University of Nebraska - Lincoln (1223)
- Department of Primary Industries and Regional Development, Western Australia (409)
- Utah State University (382)
- Universitas Indonesia (347)
-
- Old Dominion University (211)
- University of Arkansas, Fayetteville (192)
- University of Texas Rio Grande Valley (165)
- University of South Florida (157)
- TÜBİTAK (156)
- University of South Carolina (153)
- South Dakota State University (137)
- Louisiana State University (136)
- Portland State University (135)
- Nova Southeastern University (126)
- University of Nevada, Las Vegas (121)
- Technological University Dublin (120)
- Chulalongkorn University (117)
- SIT Graduate Institute/SIT Study Abroad (98)
- Loma Linda University (93)
- Singapore Management University (86)
- University of Northern Iowa (79)
- International Centre of Insect Physiology and Ecology (78)
- Edith Cowan University (73)
- Missouri University of Science and Technology (72)
- Western Kentucky University (69)
- University of Texas at El Paso (67)
- Brigham Young University (60)
- Clemson University (60)
- The Texas Medical Center Library (59)
- Keyword
-
- Western Australia (232)
- Sustainability (155)
- Climate change (138)
- Nitrogen (127)
- Nutritive value (123)
-
- Grazing (113)
- Grains and field crops (108)
- Nutrition (108)
- Sheep (88)
- Phosphorus (87)
- Forage (82)
- Agriculture (80)
- Digestibility (77)
- Pasture (75)
- Cattle (67)
- Alfalfa (65)
- Yield (64)
- Forage quality (62)
- Silage (60)
- Soil (59)
- Obesity (57)
- Environment (56)
- Livestock (55)
- Machine learning (55)
- Crude protein (54)
- Diet (52)
- Intake (52)
- Management (52)
- Conservation (51)
- Biodiversity (49)
- Publication Year
- Publication
-
- IGC Proceedings (1977-2023) (2270)
- Kesmas (327)
- Theses and Dissertations (212)
- United States Department of Agriculture Wildlife Services: Staff Publications (207)
- Electronic Theses and Dissertations (180)
-
- Faculty Publications (167)
- School of Natural Resources: Faculty Publications (141)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (123)
- Turkish Journal of Chemistry (122)
- Graduate Theses and Dissertations (103)
- Experimental Summaries - Plant Research (95)
- Loma Linda University Electronic Theses, Dissertations & Projects (93)
- USF Tampa Graduate Theses and Dissertations (88)
- Independent Study Project (ISP) Collection (87)
- Theses (83)
- Chulalongkorn University Theses and Dissertations (Chula ETD) (81)
- Kentucky Alfalfa and Stored Forage Conference (79)
- LSU Master's Theses (79)
- All Peer-Reviewed Publications (77)
- Journal of the Department of Agriculture, Western Australia, Series 4 (77)
- Research Collection School Of Computing and Information Systems (70)
- Open Access Theses & Dissertations (66)
- Chemistry Faculty Publications (63)
- United States Department of Commerce: Staff Publications (58)
- School of Earth, Environmental, & Marine Sciences Faculty Publications (57)
- Articles (54)
- OES Faculty Publications (53)
- Faculty, Staff and Student Publications (52)
- Kentucky Grazing Conference (52)
- Masters Theses (52)
- Publication Type
- File Type
Articles 9571 - 9600 of 10860
Full-Text Articles in Entire DC Network
Growth And Performance Of Some Forage And Landscape Species Directly Irrigated With Saline Water, Mohammed Abdul Muhsen Ali Salem
Growth And Performance Of Some Forage And Landscape Species Directly Irrigated With Saline Water, Mohammed Abdul Muhsen Ali Salem
Theses
This work aimed to study the growth and physiological performance of SIX forage and
landscape species grown in Nahshalah farm , Zayed International Agricultural and Environmental Research Program Among these species 4 mangrove plants were first Introduced to U. A. E cli mate and soils In addition, Acacia ampliceps and Atriplex amnicola The study covered 1- 7 years plants were irrigated With 25 ppt . Saline water. The study investigated also the changes in the soil chemical characteristics and mineral composition during the 1 -9 years direct irrigation with saline water
The growth performance was measured based on the sufficient …
Analysis Of Fats And Fat-Soluble Components In Foods Using Supercritical Fluid Extraction And Chromatographic Techniques, Sneha Patel
Masters Theses & Specialist Projects
The purpose of this study was to develop experimental procedures for the extraction of fats from common foods using SFE and to determine by chromatographic techniques the fat-soluble components that are extracted with the fats. In this study various food samples were examined including french fries from Wendy's, McDonald's and Burger King, as well as potato chips, peanut butter and donuts. Soxtec extraction was used as the standard method for comparison of results (percentage of fat) obtained from SFE. Gas chromatography and gas chromatography/mass spectrometry were used for the determination of fat-soluble components (fatty acids), after extraction of fat from …
The Probe, Issue 200 – May 1999
The Probe, Issue 200 – May 1999
The Probe: Newsletter of the National Animal Damage Control Association
As It Was in Region 5, 1949-1964 -- Clarence "Ki" Faulkner
NWCOA Holds First Board Meeting
Call for Papers-19th Vertebrate Pest Conference: March 6, 2000 - San Diego, California
Colorado County Bans Rodents
Oregon Hunters, Farmers Control Geese
Handbook Review: Wildlife Removal Handbook— A Guide to the Capture and Control of Wild Urban Animals. Revised and Expanded (1999) Authored by Stephen Vantassel. Reviewed by Rex E. Marsh, Wildlife Fish & Conservation Biology, University of California, Davis
Border Collie Loses Interest in Geese
Colorado Deer Herds Decline
Texas Wildlife Specialists Solve Predation Problems
Abstracts from the 5th Annual Conference of The …
Center For Sustainable Agricultural Systems Newsletter, May/June 1999
Center For Sustainable Agricultural Systems Newsletter, May/June 1999
Center for Sustainable Agricultural Systems: Newsletter (1993–2000)
Contents: The Farmer and the Dean University Role in Biotechnology: Who Owns Genes and Diversity? CSAS Volume 9 Discusses Watersheds SARE Appoints Paula Ford North Central PDP Coordinator Policy Project Identifies Retention of Farms and Farmland as Top Priorities Olson Heads to Kentucky Organic Grain Farming Workshops Two Alternative Agriculture Conferences in Midwest
Program Abstracts, 111th Session, Iowa Academy Of Science, April 23-24, 1999, Iowa Academy Of Science
Program Abstracts, 111th Session, Iowa Academy Of Science, April 23-24, 1999, Iowa Academy Of Science
Iowa Academy of Science Documents
Presentation abstracts from the annual meeting of the Iowa Academy of Science
Nutrient Enhanced Coastal Ocean Productivity In The Northern Gulf Of Mexico, William J. Wiseman Jr., Michael J. Dagg, Nancy N. Rabalais, Terry E. Whitledge
Nutrient Enhanced Coastal Ocean Productivity In The Northern Gulf Of Mexico, William J. Wiseman Jr., Michael J. Dagg, Nancy N. Rabalais, Terry E. Whitledge
Faculty Publications
No abstract provided.
Aluminum And Phosphorus Separation: Application To Preparation Of Target From Brain Tissue For 26Al Determination By Accelerator Mass Spectrometry, Russell D. Brauer, J. David Robertson, Pankaj Sharma, Robert A. Yokel
Aluminum And Phosphorus Separation: Application To Preparation Of Target From Brain Tissue For 26Al Determination By Accelerator Mass Spectrometry, Russell D. Brauer, J. David Robertson, Pankaj Sharma, Robert A. Yokel
Pharmaceutical Sciences Faculty Publications
Acid digested brain containing 4 mg added 27Al was ashed at 1000°C to prepare an Al2O3 target for accelerator mass spectrometry (AMS) analysis of 26Al. A glass-like material usually resulted which was thought to be aluminum (Al) oxyphosphate. The separation of Al and phosphate was investigated. Al, but not phosphate, was bound by a cation exchange resin (AG 50-X8). Hydrofluoric acid eluted the Al from the resin. Removal of phosphate from acid digested brain by this method produced an amorphous material after ashing that was easier to recover from the porcelain crucible and had a …
Production Of Copper-Complexing Ligands In Response To Elevated Concentrations Of Copper In Marine Synechococcus Spp., Arunsri Chatkaeomorakot Brown
Production Of Copper-Complexing Ligands In Response To Elevated Concentrations Of Copper In Marine Synechococcus Spp., Arunsri Chatkaeomorakot Brown
Theses and Dissertations in Biomedical Sciences
Synechococcus spp. (marine cyanobacteria) are extremely sensitive to copper toxicity and can produce high-affinity ligands of unknown structure which form complexes with free cupric ion. These ligands may contribute to the biological control of the levels of free cupric ions in surface seawater. Synechococcus spp. are known to produce metallothioneins (MT) in response to cadmium and zinc stress. In the present study the hypothesis that marine Synechococcus produce MT in response to copper was tested. Three marine Synechococcus spp. i.e., PCC 7001, PCC 73109, and PCC 7003, were exposed to different concentrations of CUSO 4 for various time periods. Size …
Horticulture Research Report 1994 - 1998, Frank Wise Institute, Kununurra, Department Of Agriculture, Western Australia, D. Robinson, M. Howes, R. Randell
Horticulture Research Report 1994 - 1998, Frank Wise Institute, Kununurra, Department Of Agriculture, Western Australia, D. Robinson, M. Howes, R. Randell
Horticulture research reports
This report summarises horticultural research, development and extension activities undertaken by staff from the Kununurra District Office during the period 1993 to 1998 and reported annually at the Frank Wise Institute Horticultural Research Review. The range and extent of activities presented and supported by Agriculture Western Australia with industry collaboration indicates the importance of horticulture in the economies of the Kimberley Region and Western Australia. Further support by funding bodies and agribusiness, and collaboration with other research organizations is also acknowledged. Since the early 1980's, horticultural output and value of production from the Ord River Irrigation Area (ORIA) have risen …
The Prairie Naturalist Volume 31, No.1 March 1999
The Prairie Naturalist Volume 31, No.1 March 1999
The Prairie Naturalist
NEST SITE CHARACTERISTICS OF RING-NECKED PHEASANTS IN EASTERN SOUTH DAKOTA ▪ J. R. Purvis, A. E. Gabbert, and L. D. Flake
FIELD EVALUATION OF RADIOTRANSMITTERS FOR NORTHERN POCKET GOPHERS ▪ G. W. Witmer and M. J. Pipas
DISTRlBllTiON OF A MOlJND-BUILDING ANT ON NATIVE AND RESTORED PRAIRIES IN NORTHEASTERN KANSAS ▪ J. Foster and W. D. Kettle
RESULTS OF A WILD TURKEY RELEASE IN KANSAS TALLGRASS PRAIRIE ▪ J. F. Cully, Jr., P. R. Lemons, II, and R. D. Applegate
BODY-SIZE AND AGE'-RELATED MASTICATORY RELATIONSHIPS IN TWO SPECIES OF BLARINA ▪ B. J. Verts, L. N. Carraway, and R. A. …
Center For Sustainable Agricultural Systems Newsletter, March/April 1999
Center For Sustainable Agricultural Systems Newsletter, March/April 1999
Center for Sustainable Agricultural Systems: Newsletter (1993–2000)
Contents: We Came! We Saw! We Heard! University Role in Biotechnology: Who Benefits From New Technologies? Highlights of Upcoming Book: Under The Blade (Part 6) Study Finds Consolidation Harms Nation's Consumers And Farmers National Ag Biotech Meeting in Lincoln Nordic Agroecology Course Welcomes Students Agroecology Field Course Offered
Globalization And The Sustainability Of Human Health: An Ecological Perspective, Robert Costanza, A. J. Mcmichael, Bert Bolin, Gretchen C. Daily, Carl Folke, Kerstin Lindahl-Kiessling, Elisabet Lindgren, Bo Niklasson
Globalization And The Sustainability Of Human Health: An Ecological Perspective, Robert Costanza, A. J. Mcmichael, Bert Bolin, Gretchen C. Daily, Carl Folke, Kerstin Lindahl-Kiessling, Elisabet Lindgren, Bo Niklasson
Institute for Sustainable Solutions Publications and Presentations
The last half-century has seen momentous and accelerating changes in humankind's economic activities, political relations, and social and demographic profile. A prominent feature of this change is the increasing scale of human impact on Earth's natural biophysical systems: the climate system, stratospheric ozone, biodiversity, terrestrial and marine food-producing ecosystems, and the great cycles of water, nitrogen, and sulfur (Meyer 1996, Vitousek et al. 1997). These systems sustain the conditions on which life depends, and their weakening may therefore have profound long-term implications for human population health (McMichael 1993, Last 1997).
Vol. 22 No. 1 (1999): Pacific Studies Full Issue, The Jonathan Nāpela Center For Hawaiian And Pacific Islands Studies
Vol. 22 No. 1 (1999): Pacific Studies Full Issue, The Jonathan Nāpela Center For Hawaiian And Pacific Islands Studies
Pacific Studies
Pacific Studies is published two times a year by The Jonathan Nāpela Center for Hawaiian and Pacific Studies, Brigham Young University Hawai‘i #1979, 55–220 Kulanui Street, Lāʻie, Hawai‘i 96762, but responsibility for opinions expressed in the articles rests with the authors alone. Subscription rate is US$40.00 yearly, payable to The Jonathan Nāpela Center for Hawaiian and Pacific Studies. The Jonathan Nāpela Center for Hawaiian and Pacific Studies (formerly The Pacific Institute) is an organization funded by Brigham Young University Hawai‘i. The Center assists the University in meeting its cultural and educational goals by undertaking a program of teaching, research, and …
Environmental Change, Economic Development, And Emigration In Tuvalu, John Connell
Environmental Change, Economic Development, And Emigration In Tuvalu, John Connell
Pacific Studies
Growing consensus on the accelerated greenhouse effect indicates that potential increases in both sea levels and tropical storms will pose problems for atoll states, especially Tuvalu. Land areas and water supplies may be threatened by coastal erosion, depleting agricultural and fisheries potential. Tuvalu’s economy is limited and partly reliant on aid and remittances whose sustainability is uncertain. More than a third of the population now lives in overcrowded conditions in the urban center of Funafuti. Population growth has accelerated since independence, despite attempts to implement a population policy, while opportunities for temporary or permanent emigration have not increased. If environmental …
Studies Of Supply Responses In Indian Agriculture: Some Models For Planning Rational Food Supply., Nilabja Ghosh Dr.
Studies Of Supply Responses In Indian Agriculture: Some Models For Planning Rational Food Supply., Nilabja Ghosh Dr.
Doctoral Theses
This thesis deals with food supply in a less developed country.In a world where social awareness together with technical progress is offering advances in all spheres of life, the persisting presence of hunger and malnutrition in any corner of the earth casts a shadow on all human achievements. It is said that over 800 million human beings in this world are suffering from hunger and a great majority of them live in Asia. Food problem has many dimensions (Timmer et al, 1983), but the solution lies mostly in adequate supply of foodgrains and proper distribution of the same. Any shortfall …
How I Produce And Market Alfalfa Hay, John Nowak
How I Produce And Market Alfalfa Hay, John Nowak
Kentucky Alfalfa and Stored Forage Conference
John Nowak was born March 22, 1947, in New York City and was raised in Westchester County, just north of New York City. After graduating from Colorado State University with a B.S. degree in farm and ranch management, he entered the U.S. Army. John served on active duty from 1969 until 1978. In 1975, his Army career brought him to Fort Campbell, Kentucky, and he began farming part-time in Christian County in 1976. As with many "start-from-scratch" farmers, John's first farming efforts involved producing burley tobacco during the years 1976 through 1979. In 1979, he began a cow-calf and backgrounding …
Crop Updates 1999 - Oilseeds, Paul Carmody, Rick Madin, David Bowran, Martin Barbetti, Ravjit Khangura, Graham Walton, Phil Parker, Francoise Berlandier, Linnet Cartwright, Ping Si, Nick Galwey, David Turner, Wayne Pluske, Roger Jones, Brenda Coutts, Bill Bowden, Isabel Arevalo-Vigne, Jeff Russell, Syed H. Zaheer, Andrew Simon, Art Diggle, Dave Eksteen, Arjen Ryder, Bill Crabtree, Serena Wyatt, Jim Baily
Crop Updates 1999 - Oilseeds, Paul Carmody, Rick Madin, David Bowran, Martin Barbetti, Ravjit Khangura, Graham Walton, Phil Parker, Francoise Berlandier, Linnet Cartwright, Ping Si, Nick Galwey, David Turner, Wayne Pluske, Roger Jones, Brenda Coutts, Bill Bowden, Isabel Arevalo-Vigne, Jeff Russell, Syed H. Zaheer, Andrew Simon, Art Diggle, Dave Eksteen, Arjen Ryder, Bill Crabtree, Serena Wyatt, Jim Baily
Crop Updates
This article contains eighteen papers
-
INTRODUCTION, Paul Carmody, Agriculture Western Australia
PLENARY SESSION
-
Transgenic canola in Western Australia: Outlook and challenges, Phil Salisbury, University of Melbourne
-
Farming system issues for herbicide tolerant canola, Rick Madin, Rick Madin and Associates, David Bowran, Agriculture Western Australia
-
Beating blackleg in 1999, Martin Barbetti, Ravjit Khangura, Paul Carmody, Graham Walton, Agriculture Western Australia
-
The Mustard Industry in Australia – Opportunities for a new oilseed, Phil Parker, NSW Agriculture
-
Management of blackleg with fungicides, Ravjit Khangura and Martin Barbetti, Agriculture Western Australia
-
Effect of aphid feeding …
Crop Updates 1999 - Cereals, Len W. Broadbridge, Doug Abrecht, D. Bakker, Greg Hamilton, Cliff Spann, Doug Rowe, Peter Fisher, Jennifer Bignell, Matthew Braimbridge, Bill Bowden, Ross Brennan, Reg Lunt, Senthold Asseng, Cherie Rowles, Simon Bedbrook, Chris Gazey, Mike Bolland, Garren Knell, Lyn Abbott, Zed Rengel, Wayne Pluske, Erin Cahill, Bill Crabtree, Matthew Evans, Tim Nielsen, Jat Bhathal, Rob Loughman, D. Rasmussen, Roger A C Jones, Sean Kelly, Ian Riley, Sharyn Tayor, Vivien Vanstone, Dominie Wright, Debbie Thackray, Simon Mckirdy, George Yan, Robin Wilson, Iain Barclay, Robin Mclean, Dean A. Diepeveen, Bill Lambe, Wal Anderson, Brenda Shackley, Mechelle Owen, Peter Burgess, Ben Curtis, Mohammed A. Hamza, Jamie Henderson, Frank Boetel, Alfredo Impiglia, Frances Hoyle, Darshan Sharma, Pierre Fievez, Blakely Paynter, Glenn Macdonald, Kevin Young, Andrew Blake, Keith Devenish, P J. Dolling, Roy Latta, Lisa-Jane Blacklow, Chris Matthews, Angelo Loi, Brad Nutt, Rochelle Mcrobb, David Webb, Andrew Mcrobb, Clinton K. Revell, James Ridsdill-Smith, Celia Pavri, David Tennant, Darryl Mclements, Ross Thompson, Mike Ewing, Tim Woodburn, Paul Yeoh, James Fisher, Art Diggle, Mark Whitten, Andrew Rate, Paul Carlile, Ed Blanchard, Bevan Buirchell, Lorraine Osborne, Tress Walmsley, Terry Piper, Cameron Weeks, Michael Dodd, Amanda Falconer, Caroline Peek, Glenn Adam, Camray Gethin, Richard Guinness, Daniel Fels, Andrew Rintoul, Mal Lamond, Roger Tapp, Craig White
Crop Updates 1999 - Cereals, Len W. Broadbridge, Doug Abrecht, D. Bakker, Greg Hamilton, Cliff Spann, Doug Rowe, Peter Fisher, Jennifer Bignell, Matthew Braimbridge, Bill Bowden, Ross Brennan, Reg Lunt, Senthold Asseng, Cherie Rowles, Simon Bedbrook, Chris Gazey, Mike Bolland, Garren Knell, Lyn Abbott, Zed Rengel, Wayne Pluske, Erin Cahill, Bill Crabtree, Matthew Evans, Tim Nielsen, Jat Bhathal, Rob Loughman, D. Rasmussen, Roger A C Jones, Sean Kelly, Ian Riley, Sharyn Tayor, Vivien Vanstone, Dominie Wright, Debbie Thackray, Simon Mckirdy, George Yan, Robin Wilson, Iain Barclay, Robin Mclean, Dean A. Diepeveen, Bill Lambe, Wal Anderson, Brenda Shackley, Mechelle Owen, Peter Burgess, Ben Curtis, Mohammed A. Hamza, Jamie Henderson, Frank Boetel, Alfredo Impiglia, Frances Hoyle, Darshan Sharma, Pierre Fievez, Blakely Paynter, Glenn Macdonald, Kevin Young, Andrew Blake, Keith Devenish, P J. Dolling, Roy Latta, Lisa-Jane Blacklow, Chris Matthews, Angelo Loi, Brad Nutt, Rochelle Mcrobb, David Webb, Andrew Mcrobb, Clinton K. Revell, James Ridsdill-Smith, Celia Pavri, David Tennant, Darryl Mclements, Ross Thompson, Mike Ewing, Tim Woodburn, Paul Yeoh, James Fisher, Art Diggle, Mark Whitten, Andrew Rate, Paul Carlile, Ed Blanchard, Bevan Buirchell, Lorraine Osborne, Tress Walmsley, Terry Piper, Cameron Weeks, Michael Dodd, Amanda Falconer, Caroline Peek, Glenn Adam, Camray Gethin, Richard Guinness, Daniel Fels, Andrew Rintoul, Mal Lamond, Roger Tapp, Craig White
Crop Updates
This article covers sixty papers
FOREWORD
ACKNOWLEDGMENTS
PLENARY PAPERS
1. Western Australia’s climate: trends and opportunities, Len W. Broadbridge, Director, Bureau of Meterorology
2. Managing seasonal variations in agriculture, Dr Doug Abrecht, Director, Dryland Research Institute, Merredin
CROP ESTABLISHMENT
3. Soil management to prevent waterlogging on duplex soils in the Great Southern, D. Bakker, Greg Hamilton, Cliff Spann and Doug Rowe, Agriculture Western Australia
4. The influence of no-till and press wheels on crop production for heavy soils, Peter Fisher, Jennifer Bignell, Matthew Braimbridge, Greg Hamilton, Agriculture
Western Australia
NUTRITION
5. Fertiliser nitrogen, applied late, needs …
Western Australia Soil Acidity Research And Development Update 1999 : Time To Lime, Department Of Agriculture And Food, Western Australia
Western Australia Soil Acidity Research And Development Update 1999 : Time To Lime, Department Of Agriculture And Food, Western Australia
Bulletins 4000 -
We all know we have to apply lime as part of our farming systems. This means that a huge amount of lime will be applied to soils which have never had lime applied before.
One of the effects of this is that we can now consider thinking about introducing acid-sensitive systems to soils, which previously would have been considered too acid.
The other side of liming is that the pH changes affect many soil properties. There is an element of uncertainty about whether unforeseen side effects will emerge on our fragile soils as a result of this new practice.
The …
Reversal Of Sodium Arsenite Inhibition Of Rat Liver Microsomal Ca2+ Pumping Atpase By Vitamin C, Odutayo O. Odunuge, Gbolahan W. Okunade, Olufunso O. Olorunsogo
Reversal Of Sodium Arsenite Inhibition Of Rat Liver Microsomal Ca2+ Pumping Atpase By Vitamin C, Odutayo O. Odunuge, Gbolahan W. Okunade, Olufunso O. Olorunsogo
Faculty Publications
Sodium arsenite (NaAsO2), at 10% of its median lethal dose, was administered to rats with and without vitamin C pretreatment. Liver microsomal fraction was isolated and the activity of Ca2+-ATPase was assayed. Sodium arsenite was found to inhibit the activity of the liver microsomal Ca2+-ATPase to 50% to that of control rats. The specific activity of the enzyme in rats administered sodium arsenite with vitamin C pretreatment was not significantly different from that of control rats.
Index For Volume 106
Journal of the Iowa Academy of Science: JIAS
No abstract provided.
1999 Platte River Basin Ecosystem Symposium Proceedings
1999 Platte River Basin Ecosystem Symposium Proceedings
Water Current Newsletter
No abstract provided.
Chlorophyll Meter Assessments Of Corn Response To Nitrogen Management Practices, M. M. Siambi, D. L. Karlen, R. M. Shibles
Chlorophyll Meter Assessments Of Corn Response To Nitrogen Management Practices, M. M. Siambi, D. L. Karlen, R. M. Shibles
Journal of the Iowa Academy of Science: JIAS
Environmentally sound nitrogen (N) management is necessary to simultaneously achieve high crop yields and protect surface and groundwater quality. We evaluated a hand-held chlorophyll meter as a diagnostic tool for improving management for corn (Zea mays L.). Five N fertilizer rates (0, 67, 134, 201 and 280 kg N ha-1) were evaluated in one study, and in a second study, the meter was used to evaluate the N status of corn plants grown under varying tillage (chisel plow vs no-till), crop rotation (continuous corn vs corn-soybean [Glycine max (L.) Merr.]), and N management treatments. Meter readings were …
Analysis Of Phytoestrogens By High Performance Liquid Chromatography, Anne A. Grippo, Yan Xie, Benjamin L. Rougeau, William V. Wyatt
Analysis Of Phytoestrogens By High Performance Liquid Chromatography, Anne A. Grippo, Yan Xie, Benjamin L. Rougeau, William V. Wyatt
Journal of the Arkansas Academy of Science
Phytoestrogens are biochemicals synthesized in plants which mimic steroidal estrogen activity in mammals. Analysis of these compounds in the legumes which produce them and in body fluids is important to the study of their physiological effects. High pressure liquid chromatography (HPLC) has been found to be an efficient and sensitive method of identification and quantitation of isoflavonoids, one class of phytoestrogen. Here we report the separation of three isoflavonoids, biochanin A, genistein and daidzein using an HPLC system with a Cg reverse phase column and a linear gradient mobile phase containing acetonitrile and acetic acid/water (10/90, v/v) over 60 minutes. …
The Association Of Fluid Intake With Total Natural-Cause Mortality, Coronary Heart Disease And Fatal Stroke, Jacqueline Chung Lun Chan
The Association Of Fluid Intake With Total Natural-Cause Mortality, Coronary Heart Disease And Fatal Stroke, Jacqueline Chung Lun Chan
Loma Linda University Electronic Theses, Dissertations & Projects
Hypohydration may be more widespread than realized since it does not always arouse a sense of thirst. When thirst is felt, it is often ignored, or satisfied before euhydration is achieved. There is growing evidence indicating that hypohydration contributes to acute and chronic illnesses, and to rheological factors associated with coronary heart disease (CHD) and stroke. Therefore the relationship of fluid intake with risk of total natural-cause mortality, CHD and stroke death was examined using data on 34,192 white, non-Hispanic participants in the Adventist Health Study.
Among the 27,342 reporting no CHD, stroke or diabetes at baseline, during six years …
Body Weight And Mortality Among Adults Who Never Smoked, Pramil N. Singh
Body Weight And Mortality Among Adults Who Never Smoked, Pramil N. Singh
Loma Linda University Electronic Theses, Dissertations & Projects
Most prospective studies identify an increased mortality risk for adults of high body mass index (> 27 kg/m2) that is commonly attributed to the effects of excess body fat, and also identify an increased mortality risk for adults of low body mass index (< 21 kg/m2), an association that, if causal among healthy adults, is without adequate pathophysiologic support.
In this dissertation, I have conducted three studies that continue the investigation of adiposity in relation to mortality among never-smoking adults of the California Seventh-day Adventist population. Among never-smoking adults of the Adventist Mortality Study (1960-1985), the relation between …
A Summer Academy Program For Prospective Teachers: Model Teaching Experiences, M. Neathery
A Summer Academy Program For Prospective Teachers: Model Teaching Experiences, M. Neathery
Journal of Mathematics and Science: Collaborative Explorations
This article describes the project, A Summer Academy Program for Prospective Teachers: Model Teaching Experiences, of the Oklahoma Teacher Education Collaborative (O-TEC), one of the nation’s Collaboratives for Excellence in Teacher Preparation (CETP). To recruit highly qualified teachers in science and mathematics, O-TEC institutions promote a program of summer academies that provide prospective teachers with opportunities to become familiar with effective teaching methods. During the academy, high school juniors and seniors explore inquiry-based teaching strategies, exemplary curricula, science and math content, and state and national standards in math and science education-all under the tutelage of mentor teachers, a Master-Teacher-in- Residence, …
Trapping Considerations For The Fossorial Pocket Gopher, Gary W. Witmer, Rex Marsh, George Matschke
Trapping Considerations For The Fossorial Pocket Gopher, Gary W. Witmer, Rex Marsh, George Matschke
United States Department of Agriculture Wildlife Services: Staff Publications
Fossorial mammals such as the pocket gopher (Thomomys spp.) are well adapted to life in an underground closed burrow system. These animals can have considerable influence on ecosystems and can cause significant damage to agricultural crops, forest resources, and field machinery. The research and management of pocket gopher populations poses many challenges to land managers and research biologists. Both live-trapping for research purposes and kill trapping for control purposes are important tools for working with pocket gophers. Trapping can be an effective and efficient tool if the proper traps are used and trappers are trained to place traps properly …
Limitation Of Algal Growth By Iron Deficiency In The Australian Subantarctic Region, Peter N. Sedwick, Giacomo R. Ditullio, David A. Hutchins, Philip W. Boyd, F. Brian Griffiths, A. Clive Crossley, Thomas W. Trull, Bernard Queguiner
Limitation Of Algal Growth By Iron Deficiency In The Australian Subantarctic Region, Peter N. Sedwick, Giacomo R. Ditullio, David A. Hutchins, Philip W. Boyd, F. Brian Griffiths, A. Clive Crossley, Thomas W. Trull, Bernard Queguiner
OES Faculty Publications
In March 1998 we measured iron in the upper water column and conducted iron- and nutrient-enrichment bottle-incubation experiments in the open-ocean Subantarctic region southwest of Tasmania, Australia. In the Subtropical Convergence Zone (∼42°S, 142°E), silicic acid concentrations were low (< 1.5μM) in the upper water column, whereas pronounced vertical gradients in dissolved iron concentration (0.12-0.84 nM) were observed., presumably reflecting the interleaving of Subtropical and Subantarctic waters, and mineral aerosol input. Results of a bottle-incubation experiment performed at this location indicate that phytoplankton growth rates were limited by iron deficiency within the iron-poor layer of the euphotic zone. In the Subantarctic water mass (∼46.8°S, 142°E), low concentrations of dissolved iron (0.05-0.11nM) and silicic acid (< 1μM) were measured throughout the upper water column, and our experimental results indicate that algal growth was limited by iron deficiency. These observations suggest that availability of dissolved iron is a primary factor limiting phytoplankton growth over much of the Subantarctic Southern Ocean in the late summer and autumn.
Comparative Study Of Selenium Requirements Of Three Phytoplankton Species: Gymnodinium Catenatum, Alexandrium Minutum (Dinophyta) And Chaetoceros Cf. Tenuissimus (Bacillariophyta, Martina A. Doblin, Susan I. Blackburn, Gustaaf M. Hallegraeff
Comparative Study Of Selenium Requirements Of Three Phytoplankton Species: Gymnodinium Catenatum, Alexandrium Minutum (Dinophyta) And Chaetoceros Cf. Tenuissimus (Bacillariophyta, Martina A. Doblin, Susan I. Blackburn, Gustaaf M. Hallegraeff
OES Faculty Publications
This study investigated the selenium (Se) requirements of three phytoplankton species which commonly bloom in southern Australian estuaries. The present study showed that the toxic dinoflagellate Gymnodinium catenatum Graham had an obligate requirement for Se (IV) in culture. After two transfers (~ 4 weeks ≈ 7 generations) in Se-deficient seawater medium, this phytoplankton species exhibited a decline in growth rate (25%) and biomass yield (90%), while complete cessation of cell division occurred under prolonged (8 weeks ≈ 12 generations) Se starvation. Addition of 10-9-10-7 M H2SeO3 to nutrient-enriched seawater medium resulted in increased G.catenatum …