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Articles 15391 - 15420 of 16207
Full-Text Articles in Earth Sciences
Animal Unit Weight And Daily Requirement Of Sangsary Sheep Breed, Hossein Arzani, Mehdi Ghorbani, A. Nikkhah, Hossein Azarnivand
Animal Unit Weight And Daily Requirement Of Sangsary Sheep Breed, Hossein Arzani, Mehdi Ghorbani, A. Nikkhah, Hossein Azarnivand
IGC Proceedings (1977-2023)
No abstract provided.
Companion Crops For Pasture Establishment In The State Of Minas Gerais, Brazil, I. F. Andrade, P. Schmidt
Companion Crops For Pasture Establishment In The State Of Minas Gerais, Brazil, I. F. Andrade, P. Schmidt
IGC Proceedings (1977-2023)
No abstract provided.
The Value Accounting Index System And Application Of Degenerative Grassland — A Case Study On Chen Barng Banner In Hulunbeir Grassland, Jianhui Yin
IGC Proceedings (1977-2023)
No abstract provided.
Antioxidant Properties Of Pecan Shell Bioactive Components Of Different Cultivars And Extraction Methods, Cameron Cason, Veerachandra K. Yemmireddy, Juan Moreira, Achyut Adhikari
Antioxidant Properties Of Pecan Shell Bioactive Components Of Different Cultivars And Extraction Methods, Cameron Cason, Veerachandra K. Yemmireddy, Juan Moreira, Achyut Adhikari
School of Earth, Environmental, & Marine Sciences Faculty Publications
Pecan shells are a rich source of various bioactive compounds with potential antioxidant and antimicrobial properties. This study investigated the effect of pecan variety and method extraction on the antioxidant property of shell extracts. Twenty different varieties of pecan shells were subjected to either aqueous or ethanolic extraction and were examined for total phenolics and antiradical activity. The phenolic content and antiradical activity of shell extracts were significantly (p < 0.05) varied with different pecan cultivars. The total phenolic content of ethanol extracts ranged from 304.2 (Caddo) to 153.54 (Cherokee) mg GAE/g of dry extract and was significantly greater (p < 0.05) than those obtained by aqueous extraction. The antiradical activity of ethanol extracts ranged from 840.6 (Maramec) to 526.74 (Caper Fear) mg TEg−1, while aqueous extracts ranged from 934.9 (Curtis) to 468.3 (Elliot) mg TEg−1. Chemical profiling of the crude and acid hydrolyzed extracts was performed by reverse phase high performance liquid chromatography and flow injection electrospray ionization mass spectrometry. Lignin degradation products such as lignols, dilignols, trilignols, and oligolignols were found to be the major components of tested extracts. Phenolic content and antiradical activity of pecan shell extracts are significantly varied with cultivars and methods of extraction.
Hydro-Morphodynamics Of Sandy Coastal Embayments, Shamim Murshid
Hydro-Morphodynamics Of Sandy Coastal Embayments, Shamim Murshid
LSU Doctoral Dissertations
This dissertation investigates the hydro-morphodynamics of two major components of a sandy coastal environment: tidal inlets and embayment shorelines. In the first study, I focused on the evolution of inlet geometry by compiling and analyzing a database with 226 inlets worldwide with a special attention given to their width to depth ratio (or aspect ratio). I found that the aspect ratio has a weak dependency on tidal range and wave height, and they lie in different ranges for three types of tidal inlets: engineered, natural single-thread, and natural compound. I also developed a 2D hydro-morphodynamic model of an idealized barrier-inlet …
The Study On The Mathematics Model Of Forage Type Mulberry High‐Output Cultivation And Optimizing Plan, Shuangyin Sun
The Study On The Mathematics Model Of Forage Type Mulberry High‐Output Cultivation And Optimizing Plan, Shuangyin Sun
IGC Proceedings (1977-2023)
No abstract provided.
Studies On Effect Of Intercropping Forage Grasses In Young Forestries On The Hilly Areas In South China, Keyun Li, Kexin Liu, Lingling He
Studies On Effect Of Intercropping Forage Grasses In Young Forestries On The Hilly Areas In South China, Keyun Li, Kexin Liu, Lingling He
IGC Proceedings (1977-2023)
No abstract provided.
Genetic Study On The Biological Characteristics Of F1 Hybrids Between Sorghum Bicolor And Sorghum Sudanense, Haiming Zhao, Nan Xie, Yuan Li, Guibo Liu
Genetic Study On The Biological Characteristics Of F1 Hybrids Between Sorghum Bicolor And Sorghum Sudanense, Haiming Zhao, Nan Xie, Yuan Li, Guibo Liu
IGC Proceedings (1977-2023)
No abstract provided.
Dendrolobium Spp. — A Source Of Tropical Multipurpose Legumes, R. Schultze‐Kraft, M. Peters, L. H. Franco, B. Hincapié
Dendrolobium Spp. — A Source Of Tropical Multipurpose Legumes, R. Schultze‐Kraft, M. Peters, L. H. Franco, B. Hincapié
IGC Proceedings (1977-2023)
No abstract provided.
Molecules To Mountains: A Multi-Proxy Investigation Into Ancient Climate And Topography Of The Pacific Northwest, Usa, Alexander Mclean, John Bershaw
Molecules To Mountains: A Multi-Proxy Investigation Into Ancient Climate And Topography Of The Pacific Northwest, Usa, Alexander Mclean, John Bershaw
Geology Faculty Publications and Presentations
We characterize the topographic evolution of the Pacific Northwest, United States, during the Cenozoic. New paleosol carbonate stable isotope (δ18O) results from central Oregon are presented, along with published proxy data, including fossil teeth, smectites, and carbonate concretions. We interpret a polygenetic history of Cascade Mountain topographic uplift along-strike, characterized by: 1) Steady uplift of the Washington Cascades through the Cenozoic due long-term arc rotation and shortening against a Canadian buttress, and 2) Uplift of the Oregon Cascades to similar-to-modern elevations by the late Oligocene, followed by topographic stagnation as extension developed into the Neogene. Since the Miocene, meteoric water …
Integrating Forage Legumes In Crop/Livestock Systems For Sustainable Food Production In Peri-Urban Agriculture In Uganda, S. Katuromunda, Elly N. Sabiiti, F. B. Bareeba
Integrating Forage Legumes In Crop/Livestock Systems For Sustainable Food Production In Peri-Urban Agriculture In Uganda, S. Katuromunda, Elly N. Sabiiti, F. B. Bareeba
IGC Proceedings (1977-2023)
No abstract provided.
Association Of Trees And Crops To Increase Seasonal Food Availability In The Republic Of Haity, F. Massolino, Andrea Pardini
Association Of Trees And Crops To Increase Seasonal Food Availability In The Republic Of Haity, F. Massolino, Andrea Pardini
IGC Proceedings (1977-2023)
No abstract provided.
Fodder Yield And Nutritive Value Of Turkish Highlands Shrubs, K. Kokten, O. Gursoy, A. Larbi, T. Tukel, R. Hatipoglu
Fodder Yield And Nutritive Value Of Turkish Highlands Shrubs, K. Kokten, O. Gursoy, A. Larbi, T. Tukel, R. Hatipoglu
IGC Proceedings (1977-2023)
No abstract provided.
Effects Of Animal Grazing On Quality Of Grass And Forb Forages In Mazandaran Province Of Iran, Ghasem Ali Dianati Tilaki
Effects Of Animal Grazing On Quality Of Grass And Forb Forages In Mazandaran Province Of Iran, Ghasem Ali Dianati Tilaki
IGC Proceedings (1977-2023)
No abstract provided.
Evaluation Of Manual And Semi-Automated Deep-Seated Landslide Inventory Processes: Willapa Hills, Washington, Tiffany E. Justice
Evaluation Of Manual And Semi-Automated Deep-Seated Landslide Inventory Processes: Willapa Hills, Washington, Tiffany E. Justice
Dissertations and Theses
Recent advances in remote sensing data and technology have allowed for computational models to be designed that successfully extract landforms from the landscape. The goal of this work is to create one such semi-automated model to extract deep-seated landslides located in complex geomorphic terrain. This is accomplished using geographic object-based image analysis (GEOBIA) techniques, considered by leaders in the field of image analysis to have an advantage over traditional automated classification methods. GEOBIA methods can mimic human visual interpretation by including more characteristic features used to assess the relationship between image data and the ground surface such as color reflectance …
Impacts Of Experiential Learning On The Affective Domain: Gaining Insight Into How To Broaden Participation In The Geosciences, Meghan Lindsey Cook
Impacts Of Experiential Learning On The Affective Domain: Gaining Insight Into How To Broaden Participation In The Geosciences, Meghan Lindsey Cook
USF Tampa Graduate Theses and Dissertations
Experiential learning exercises, such as field trips, are a common pedagogical practice in geoscience curriculums. Their purpose is to facilitate the transfer of knowledge gained in a classroom or lab setting into a field setting, but can be considered a barrier for entry into the geosciences for those with disabilities, caregiver/employment responsibilities, or financial constraints. Educators have begun turned to other modalities, such as virtual field experiences (VFEs), to create a more inclusive environment in the geosciences. However, the validity of VFEs as a replacement for, or augmentation to traditional field trips has yet to be established. The cognitive domain …
Investigating The Impact Of Meteoric Diagenesis On The Geochemistry Of Carbonate Eolianites, Eleuthera And Water Cay, The Bahamas, Graham S. Bonnot
Investigating The Impact Of Meteoric Diagenesis On The Geochemistry Of Carbonate Eolianites, Eleuthera And Water Cay, The Bahamas, Graham S. Bonnot
LSU Master's Theses
The geochemical signatures imparted in major, minor, and trace elements, combined with light isotopes, suggest promising applications regarding the stabilization of meteorically altered limestone eolianites. Previous high-resolution studies have indicated that elements associated with carbonate diagenesis such as Mg and Sr can be valuable proxies for salinity and aragonite dissolution, respectively. In addition to testing these proxies, the analyses of several temperature-, diagenetic-, bioactive-, and redox-sensitive elements were evaluated using laser ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS) to identify additional indicators during carbonate diagenesis. Two geochemical drivers of U were identified; (1) aragonite dissolution similar to Sr and (2) oxidation …
Breeding For An Alternative Wheat Ecoideotype To The Southern Brazilian Region, E. Caierãol, Renato S. Fontaneli, Rob S. Fontaneli, L. De J. A. Del Duca
Breeding For An Alternative Wheat Ecoideotype To The Southern Brazilian Region, E. Caierãol, Renato S. Fontaneli, Rob S. Fontaneli, L. De J. A. Del Duca
IGC Proceedings (1977-2023)
No abstract provided.
Ecological Effects Of Triticale Intercropping On Young Tea Garden, Zhaorong Dong, Jie Shen, Minping Liu, Saomin Li, Junlong Xie
Ecological Effects Of Triticale Intercropping On Young Tea Garden, Zhaorong Dong, Jie Shen, Minping Liu, Saomin Li, Junlong Xie
IGC Proceedings (1977-2023)
No abstract provided.
Performance Of Ile‐De‐France Lambs Fed Up With Diets Containing Sugar Cane Forage Variety Or Corn Silage, A. G. Silva Sobrinho, G. M. B. Moreno, A. G. Leão, C. M. B. Loureiro, A. A. M. Sampaio
Performance Of Ile‐De‐France Lambs Fed Up With Diets Containing Sugar Cane Forage Variety Or Corn Silage, A. G. Silva Sobrinho, G. M. B. Moreno, A. G. Leão, C. M. B. Loureiro, A. A. M. Sampaio
IGC Proceedings (1977-2023)
No abstract provided.
Integration Of Tree Fodder Into Traditional Goat Production Systems Of Uganda, S. G. Byenkya, C. Ebong, S. Kayuwa
Integration Of Tree Fodder Into Traditional Goat Production Systems Of Uganda, S. G. Byenkya, C. Ebong, S. Kayuwa
IGC Proceedings (1977-2023)
No abstract provided.
Retaining Eucalyptus Harvest Residues Promotes Different Pathways For Particulate And Mineral-Associated Organic Matter, Gabriel W. D. Ferreira, Fernanda C. C. Oliveira, Emanuelle M. B. Soares, Jorg Schnecker, Ivo R. Silva, A. Stuart Grandy
Retaining Eucalyptus Harvest Residues Promotes Different Pathways For Particulate And Mineral-Associated Organic Matter, Gabriel W. D. Ferreira, Fernanda C. C. Oliveira, Emanuelle M. B. Soares, Jorg Schnecker, Ivo R. Silva, A. Stuart Grandy
Faculty Publications
Eucalyptus plantations have replaced other (agro)ecosystems over 5.6 Mha in Brazil. While these plantations rapidly accumulate carbon (C) in their biomass, the C storage in living forest biomass is transient, and thus, longer-term sustainability relies on sustaining soil organic matter (SOM) stocks. A significant amount of harvest residues (HR) is generated every rotation and can yield SOM if retained in the field. Yet, there is little information on how managing eucalyptus HR changes SOM dynamics. We used isotopic and molecular approaches in a 3-yr field decomposition experiment where a native grassland has been replaced by eucalyptus plantations to assess how …
Bituminaria Bituminosa Var. Albomarginata (Lancelot Trefoil), A Novel Perennial Forage Legume For Low‐Rainfall Mediterranean Environments In Western Australia, D. Real, T. Albertsen, R. Snowball, John Howieson, Clinton K. Revell, M. Ewing, Enrique Correal, P. Mendez, S. Rios
Bituminaria Bituminosa Var. Albomarginata (Lancelot Trefoil), A Novel Perennial Forage Legume For Low‐Rainfall Mediterranean Environments In Western Australia, D. Real, T. Albertsen, R. Snowball, John Howieson, Clinton K. Revell, M. Ewing, Enrique Correal, P. Mendez, S. Rios
IGC Proceedings (1977-2023)
No abstract provided.
Annual Pasture Legumes For Increased Productivity Of Aaline Soils In South‐Western Australia, P. G. H. Nichols, D. R. Mcclements, T. O. Albertsen
Annual Pasture Legumes For Increased Productivity Of Aaline Soils In South‐Western Australia, P. G. H. Nichols, D. R. Mcclements, T. O. Albertsen
IGC Proceedings (1977-2023)
No abstract provided.
Exploring Viirs Continuity With Modis In An Expedited Capability For Monitoring Drought-Related Vegetation Conditions, Trenton D. Benedict, Jesslyn F. Brown, Stephen P. Boyte, Daniel M. Howard, Brian A. Fuchs, Brian D. Wardlow, Tsegaye Tadesse, Kirk A. Evenson
Exploring Viirs Continuity With Modis In An Expedited Capability For Monitoring Drought-Related Vegetation Conditions, Trenton D. Benedict, Jesslyn F. Brown, Stephen P. Boyte, Daniel M. Howard, Brian A. Fuchs, Brian D. Wardlow, Tsegaye Tadesse, Kirk A. Evenson
National Drought Mitigation Center: Faculty Publications
Vegetation has been effectively monitored using remote sensing time-series vegetation index (VI) data for several decades. Drought monitoring has been a common application with algorithms tuned to capturing anomalous temporal and spatial vegetation patterns. Drought stress models, such as the Vegetation Drought Response Index (VegDRI), often use VIs like the Normalized Difference Vegetation Index (NDVI). The EROS expedited Moderate Resolution Imaging Spectrora-diometer (eMODIS)-based, 7-day NDVI composites are integral to the VegDRI. As MODIS satellite platforms (Terra and Aqua) approach mission end, the Visible Infrared Imaging Radiometer Suite (VIIRS) presents an alternate NDVI source, with daily collection, similar band passes, and …
Exploring Viirs Continuity With Modis In An Expedited Capability For Monitoring Drought-Related Vegetation Conditions, Trenton D. Benedict, Jesslyn F. Brown, Stephen P. Boyte, Daniel M. Howard, Brian A. Fuchs, Brian D. Wardlow, Tsegaye Tadesse, Kirk A. Evenson
Exploring Viirs Continuity With Modis In An Expedited Capability For Monitoring Drought-Related Vegetation Conditions, Trenton D. Benedict, Jesslyn F. Brown, Stephen P. Boyte, Daniel M. Howard, Brian A. Fuchs, Brian D. Wardlow, Tsegaye Tadesse, Kirk A. Evenson
National Drought Mitigation Center: Faculty Publications
Vegetation has been effectively monitored using remote sensing time-series vegetation index (VI) data for several decades. Drought monitoring has been a common application with algorithms tuned to capturing anomalous temporal and spatial vegetation patterns. Drought stress models, such as the Vegetation Drought Response Index (VegDRI), often use VIs like the Normalized Difference Vegetation Index (NDVI). The EROS expedited Moderate Resolution Imaging Spectrora-diometer (eMODIS)-based, 7-day NDVI composites are integral to the VegDRI. As MODIS satellite platforms (Terra and Aqua) approach mission end, the Visible Infrared Imaging Radiometer Suite (VIIRS) presents an alternate NDVI source, with daily collection, similar band passes, and …
Understanding The Effect Of Fire On Vegetation Composition And Gross Primary Production In A Semi-Arid Shrubland Ecosystem Using The Ecosystem Demography (Edv2.2) Model, Karun Pandit, Hamid Dashti, Andrew T. Hudak, Nancy F. Glenn, Alejandro N. Flores, Douglas J. Shinneman
Understanding The Effect Of Fire On Vegetation Composition And Gross Primary Production In A Semi-Arid Shrubland Ecosystem Using The Ecosystem Demography (Edv2.2) Model, Karun Pandit, Hamid Dashti, Andrew T. Hudak, Nancy F. Glenn, Alejandro N. Flores, Douglas J. Shinneman
Geosciences Faculty Publications and Presentations
Wildfires in sagebrush (Artemisia spp.)-dominated semi-arid ecosystems in the western United States have increased dramatically in frequency and severity in the last few decades. Severe wildfires often lead to the loss of native sagebrush communities and change the biogeochemical conditions which make it difficult for sagebrush to regenerate. Invasion of cheatgrass (Bromus tectorum) accentuates the problem by making the ecosystem more susceptible to frequent burns. Managers have implemented several techniques to cope with the cheatgrass–fire cycle, ranging from controlling undesirable fire effects by removing fuel loads either mechanically or via prescribed burns to seeding the fire-affected areas …
Glacier Clear Ice Bands Indicate Englacial Channel Microbial Distribution, Gilda Varliero, Alexandra Holland, Gary L. A. Barker, Marian L. Yallop, Andrew G. Fountain, Alexandre M. Anesio
Glacier Clear Ice Bands Indicate Englacial Channel Microbial Distribution, Gilda Varliero, Alexandra Holland, Gary L. A. Barker, Marian L. Yallop, Andrew G. Fountain, Alexandre M. Anesio
Geology Faculty Publications and Presentations
Distant glacial areas are interconnected by a complex system of fractures and water channels which run in the glacier interior and characterize the englacial realm. Water can slowly freeze in these channels where the slow freezing excludes air bubbles giving the ice a clear aspect. This ice is uplifted to the surface ablation zone by glacial movements and can therefore be observed in the form of clear surface ice bands. We employed an indirect method to sample englacial water by coring these ice bands. We were able, for the first time, to compare microbial communities sampled from clear (i.e. frozen …
Domestication Of Mediterranean Annual Pasture Legumes For Australian Farming Systems, P. G. H. Nichols, Angelo Loi, B. J. Nutt, R. Snowball, Clinton K. Revell
Domestication Of Mediterranean Annual Pasture Legumes For Australian Farming Systems, P. G. H. Nichols, Angelo Loi, B. J. Nutt, R. Snowball, Clinton K. Revell
IGC Proceedings (1977-2023)
No abstract provided.
Going Native With Legumes In Rangeland Restoration, Cultivated Pasture And Prairies, Jim P. Muir, Twain J. Butler, W. D. Pitman, J. Lloyd‐Reilley, P. D. Maywauld, R. T. Cragar
Going Native With Legumes In Rangeland Restoration, Cultivated Pasture And Prairies, Jim P. Muir, Twain J. Butler, W. D. Pitman, J. Lloyd‐Reilley, P. D. Maywauld, R. T. Cragar
IGC Proceedings (1977-2023)
No abstract provided.