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- Alkali lakes; Biogeochemical cycles; Biogeochemistry; Crater lakes; Nevada – Big Soda Lake (1)
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Articles 1 - 20 of 20
Full-Text Articles in Physical Sciences and Mathematics
Great Basin Center For Geothermal Energy, Wendy Calvin
Great Basin Center For Geothermal Energy, Wendy Calvin
Nevada Renewable Energy Consortium Meeting
The second annual Nevada Renewable Energy Consortium meeting took place at UNLV on August 20. The meeting focused on the current three NVREC program areas: Solar, Biomass and Geothermal. Presentations were made by participating entities and a poster session followed.
Geochemistry Of Pyrite And Whole Rock Samples From The Getchell Carlin–Type Gold Deposit, Humboldt County, Nevada, Tim A. Howell, Jean S. Cline
Geochemistry Of Pyrite And Whole Rock Samples From The Getchell Carlin–Type Gold Deposit, Humboldt County, Nevada, Tim A. Howell, Jean S. Cline
Undergraduate Research Opportunities Program (UROP)
Carlin-type gold deposits were not recognized as a new major type of gold deposit until the 1960’s. The Getchell deposit, which is now known to be a Carlin-type gold deposit, was discovered in 1934 (Joralemon, 1951). This deposit is located in north central Nevada (Fig. 1). Much is known about the physical characteristics of Carlin-type gold deposits (Cline et al., 2005). An unusual characteristic of these deposits is that free gold is generally not present. Instead, gold occurs as sub-micrometer particles in the mineral pyrite or marcasite. The marcasite and pyrite that are gold bearing commonly occur as rims on …
Determination Of Olivine Orientation Dependence Through Raman Spectroscopy, Alexandra J. Leandre, Joseph Lussier, Brittany Morgan, Michael Rodriguez
Determination Of Olivine Orientation Dependence Through Raman Spectroscopy, Alexandra J. Leandre, Joseph Lussier, Brittany Morgan, Michael Rodriguez
Undergraduate Research Opportunities Program (UROP)
Raman spectra were taken of olivine for analysis of vibrational energy intensity ratios. This allowed for determination of its crystal orientation. Garnet inclusions in peridotite were mapped and Raman spectra were taken for these as well. The inclusions could not identified, and data from the Raman spectra proved inconclusive due to difficulty in removing background signal.
Biogeochemical Investigation Of Soda Lake, Kathryn Bywaters, Shaneen Braswell, David Crowther, Bernadette Leonis, Jeremy Memmott, Farrah Moazeni, Christian H. Fritsen
Biogeochemical Investigation Of Soda Lake, Kathryn Bywaters, Shaneen Braswell, David Crowther, Bernadette Leonis, Jeremy Memmott, Farrah Moazeni, Christian H. Fritsen
Undergraduate Research Opportunities Program (UROP)
Big Soda Lake, Nevada, is a terminal, volcanic crater lake whose water level is maintained exclusively by groundwater. The crater is composed of volcanic, basaltic sand and the lake is ~60 m deep (Rush, 1972). The lake is meromictic with a distinct chemocline (Kimmel et al. 1978). The chemocline currently rests at ~40 m and is reflected in both specific conductivity and salinity measurements. Below the chemocline a redox gradient develops with highly reducing conditions. The pH is consistent throughout the depth of the lake at ~9.5, proving that it is alkaline in nature. It is further stratified by both …
Chemical Weathering Of Serpentinite Rocks And Implications For Atmospheric Co2 Carbonation, Valerie Tu, Julie Baumeister, Elisabeth Hausrath
Chemical Weathering Of Serpentinite Rocks And Implications For Atmospheric Co2 Carbonation, Valerie Tu, Julie Baumeister, Elisabeth Hausrath
Undergraduate Research Opportunities Program (UROP)
No abstract provided.
High Pressure Structural Studies On Eus Nano Particles Up To 52 Gpa, Kristie Canaday, Ravhi S. Kumar
High Pressure Structural Studies On Eus Nano Particles Up To 52 Gpa, Kristie Canaday, Ravhi S. Kumar
Undergraduate Research Opportunities Program (UROP)
Crystal size reduction in bulk materials changes the structural and magnetic properties considerably [1]. More importantly the transition pressure is strongly influenced by temperature, pressure, and the crystallite size effect. Rare earth europium chalcogenides crystallize in the NaCl (rock salt) type structure. The interest in Eu nanomaterials is motivated by the possibility of their use in magnetic devices [2,3]. Recent studies suggest that europium chalcogenide nanocrystals exhibit significant changes in their structural and magnetic properties, compared to bulk chalcogenides, when the nanocrystal diameter decreases. The crystal structure and phase transition behavior of EuS nanoparticles have been investigated and compared as …
Photo Highlights Of The 30th Kentucky Alfalfa Conference, Kentucky Alfalfa Conference
Photo Highlights Of The 30th Kentucky Alfalfa Conference, Kentucky Alfalfa Conference
Kentucky Alfalfa and Stored Forage Conference
No abstract provided.
How We Produce & Market Alfalfa Hay, Clayton Geralds
How We Produce & Market Alfalfa Hay, Clayton Geralds
Kentucky Alfalfa and Stored Forage Conference
No abstract provided.
Growing Alfalfa For Wildlife, Don Ball
Growing Alfalfa For Wildlife, Don Ball
Kentucky Alfalfa and Stored Forage Conference
Alfalfa has long been recognized as a superb forage crop, which is why it is widely grown for dairy cattle, horses, sheep, and many other types of domesticated forage-consuming animals. Reasons for its popularity include wide adaptation, excellent nutritive value, good yield potential, perennial growth habit, a long growing season, and the fact that (in association with Rhizobium bacteria) it is a nitrogen-fixing legume that does not require periodic applications of nitrogen fertilizer.
Alfalfa Varieties For The Future, Joe Bouton
Alfalfa Varieties For The Future, Joe Bouton
Kentucky Alfalfa and Stored Forage Conference
When breeding tomorrow’s alfalfa varieties, most groups employ a model of combining traditional plant breeding with biotechnology tools in order to incorporate useful traits. In this model, the conventional variety development process will be the method of choice for most traits where breeders have traditionally made progress such as adaptation, heading date, disease and insect resistance, general persistence conditions such as grazing and traffic tolerance, and even yield. It has been very successful in adding economic value to the forage and livestock operations of many producers (Bouton 2007). These traditionally developed varieties will also be used as the germplasm platform …
Do's And Don'ts In Grazing Alfalfa, Ken Johnson
Do's And Don'ts In Grazing Alfalfa, Ken Johnson
Kentucky Alfalfa and Stored Forage Conference
I want to discuss some of the issues in a talk I presented nearly twenty years ago. At that point we had been grazing Alfalfa about eight years and made some general remarks about the concerns I had at the time. I will look at these as presented then and how the thoughts may have changed.
Is There A Benefit To Alfalfa Balage?, Gary Bates
Is There A Benefit To Alfalfa Balage?, Gary Bates
Kentucky Alfalfa and Stored Forage Conference
Making hay in the mid-South has always been a difficult process. High humidity and rainfall often make drying a long, tedious, if not impossible proposition. Over the last few years there has been an increased interest in making round bale silage, or balage, from forage crops. Fermenting alfalfa for storage has several advantages and disadvantages over regular haymaking systems.
Alfalfa Hay For Horses, Robert Coleman
Alfalfa Hay For Horses, Robert Coleman
Kentucky Alfalfa and Stored Forage Conference
When horse owners consider hay for their animals, a number of criteria are generally considered. Of major importance is the hay must be free of mold and dust. It needs to contain nutrients needed by the horse and it must be palatable. If these criteria are met, the type of hay should not matter. However, that is not the case with many horse owners. When discussing the selection of hay, many owners first consider the type of hay. Can it be alfalfa or should it be a grass or how about a mix of grass and a legume. If a …
Value Of Alfalfa In Rotation, S. Ray Smith
Value Of Alfalfa In Rotation, S. Ray Smith
Kentucky Alfalfa and Stored Forage Conference
There are about 23 million acres of alfalfa in the US. Alfalfa plus other hay is the most valuable crop in the US, behind only corn and soybeans. In Kentucky alfalfa is planted on over 300,000 acres and is an economically important crop for beef and dairy farmers, cash hay producers, and provides tremendous benefits for subsequent crops. There are also many non-agricultural benefits to alfalfa.
Advances In Alfalfa Seed Coatings, Bill Talley
Advances In Alfalfa Seed Coatings, Bill Talley
Kentucky Alfalfa and Stored Forage Conference
The volume of alfalfa being sold as coated seed has been in the growth mode for several years. This growth is being fueled by greater acceptance from the producer, as well as the many value added components that are now labeled and being offered as seed treatments. Originally seed coatings were looked at as a better way to deliver rhizobia to insure plant nodulation. This is still one goal, but many more value added components are now labeled that offer better plant protection, increased water absorption, enhanced germination, and micro-nutrient availability, as well as insect and parasite control. Another area …
Kentucky Alfalfa Conference Reflections After 30 Years, Garry D. Lacefield
Kentucky Alfalfa Conference Reflections After 30 Years, Garry D. Lacefield
Kentucky Alfalfa and Stored Forage Conference
This event today marks the 30th consecutive year we have come together for a full day’s conference featuring "Alfalfa - Queen of the Forages" as the theme and focal point. Only one other state (California) in the U.S. has such an annual event.
Foreword And Recipients Of Kentucky Alfalfa Awards [2010], Garry D. Lacefield, Christi L. Forsythe
Foreword And Recipients Of Kentucky Alfalfa Awards [2010], Garry D. Lacefield, Christi L. Forsythe
Kentucky Alfalfa and Stored Forage Conference
No abstract provided.
The Scaling Impact Of Hydrologic Processes On The Integrated Response In Large River Basins, Zhongbo Yu
The Scaling Impact Of Hydrologic Processes On The Integrated Response In Large River Basins, Zhongbo Yu
2010 Annual Nevada NSF EPSCoR Climate Change Conference
21 PowerPoint slides Convener: Darko Koracin, DRI Session 5: Climate Modeling Abstract: -Hydrologic change in response to the climatic variability (i.e., global warming) -Impacts at global, national or regional scales -Coupled, efficient model systems -Large-scale impacts vs. small-scale hydrology -Needs to bridge the gaps among various scales
Water Source Partitioning For Shrubland Transpiration Using Innovative Field Methods, Dale A. Devitt, Michael Young, Matthew S. Lachniet, Jeremy Koonce, Amanda Wagner, Brian M. Bird, J. Healey
Water Source Partitioning For Shrubland Transpiration Using Innovative Field Methods, Dale A. Devitt, Michael Young, Matthew S. Lachniet, Jeremy Koonce, Amanda Wagner, Brian M. Bird, J. Healey
2010 Annual Nevada NSF EPSCoR Climate Change Conference
37 PowerPoint slides Convener: Franco Biondi, UNR & Michael Young, DRI Session 4: Ecological Change and Water Resources Abstract: -Climate change models predict a decline in precipitation over the next few decades throughout much of the southwest. -Such change has the potential to shift water uptake dynamics of phreatophytes -If groundwater pumping also occurs, the impact of climate change could be exacerbated. -A better understanding of the forces that drive the coupling and decoupling of phreatophytes to groundwater is needed.
Research Poster: Quaternary Biogeography Of Neotoma Cinerea: Linking Genetic Patterns With Environmental Change, Angela D. Hornsby, Majorie D. Matocq
Research Poster: Quaternary Biogeography Of Neotoma Cinerea: Linking Genetic Patterns With Environmental Change, Angela D. Hornsby, Majorie D. Matocq
2010 Annual Nevada NSF EPSCoR Climate Change Conference
Research poster