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Articles 31 - 60 of 228
Full-Text Articles in Physical Sciences and Mathematics
Accumulation Of Polonium-210 In Different Species Of Fish In Lake Mead, Suraj Ghevarghese John, Shungmugam Nallaperumal, Vernon Hodge
Accumulation Of Polonium-210 In Different Species Of Fish In Lake Mead, Suraj Ghevarghese John, Shungmugam Nallaperumal, Vernon Hodge
Festival of Communities: UG Symposium (Posters)
Discovered by Pierre Curie and Marie Skłodowska-Curie in 1898, polonium is a chemical element with an atomic number of 84. This rare naturally occurring radioactive element is chemically similar to bismuth and tellurium, and forms in uranium ores. Polonium-210 is an naturally occurring radioactive element with a half-life of 138.376 days(1). This element is found in trace amounts in most organisms. Our research is focused on the accumulation of polonium-210 in fish that occupy in Lake Mead.
The sample species is chosen based on varying lake stratification (layers of the lake). This gives us a good idea of the difference …
Energy Densification Via Hydrothermal Carbonization, Keri Noack
Energy Densification Via Hydrothermal Carbonization, Keri Noack
Festival of Communities: UG Symposium (Posters)
A process called hydrothermal carbonization (HTC), also known as wet torrefaction involves treatment of raw biomass in hot, pressurized water. HTC of woody biomass has been shown to significantly increase the energy density of the feedstock, producing a biochar, similar to coal, having up to 40% higher calorific energy content. Feedstocks investigated include Tahoe chips, Pinion/Juniper chips, Rice hulls, and Corn Stover pellets pre-treated at 215 °C, 255 °C, and 295 °C. Chemical analyses were conducted on the gaseous, aqueous, and solid HTC products. Energy contents of the solid biochar products were measured by calorimetry, and mass balances were determined.
Groundwater: Solution To The Las Vegas Water Problem?, Rosa Perez, Christopher Ruiz
Groundwater: Solution To The Las Vegas Water Problem?, Rosa Perez, Christopher Ruiz
Festival of Communities: UG Symposium (Posters)
A contentious debate is taking place in different sectors of the community on how to manage the states groundwater system. It is a battle whose outcome, regardless of who wins, will have a tremendous impact on the future of Las Vegas. Economic benefits always seem to downplay environmental considerations in the policy-making process often with serious consequences. This paper takes a look at the SNWAʼs Groundwater Development Project and provides a discussion of the issues for and against it. Groundwater is inexpensive, relatively abundant and accessible. However, over-pumping of groundwater can have significant environmental consequences, as well. It is our …
Thin-Film Fabrication For High Pressure Thermoelectric And Electrical Resistivity Studies, Jorge L. Reynaga, Rama Venkat, Ravhi S. Kumar
Thin-Film Fabrication For High Pressure Thermoelectric And Electrical Resistivity Studies, Jorge L. Reynaga, Rama Venkat, Ravhi S. Kumar
Festival of Communities: UG Symposium (Posters)
Thermoelectric materials are of interest for application such as thermoelectric cooler in microprocessors and power generators in cars. High pressure plays an important role in understanding the changes in the figure of merit of thermoelectric thin films. To study the thermoelectric thin films a direct approach is to fabricate the thin film on the surface of a diamond anvil, so that the pressure dependence of structure and transport properties can be investigated easily. If we could successfully fabricate the electrical probes by depositing thin films, then it reduces the use of electrical wires as probes inside the diamond cell, as …
The Effects Of Climate Change On Basic Animal Cell Functions, Michelle Fulbright, Andrew Andres
The Effects Of Climate Change On Basic Animal Cell Functions, Michelle Fulbright, Andrew Andres
Festival of Communities: UG Symposium (Posters)
Increasing global temperatures during the 21st century may have detrimental effects on basic cell functions within ectothermal animals. This project aims to systematically examine the effects of climate change on secretory cargo localization through the analysis of Rab Proteins found in the model organism Drosophila melanogaster. Rab Proteins play an essential role in vesicular transport within the cell and can be genetically manipulated to monitor the biological consequences of global warming.
Oral Presentation: Next Generation Nuclear Fuels, Douglas Hanks
Oral Presentation: Next Generation Nuclear Fuels, Douglas Hanks
Festival of Communities: UG Symposium (Posters)
Zirconium carbide has been proposed as a coating layer for next generation (“TRISO”) nuclear fuel, and is intended as a diffusion barrier to contain fission products (e.g., Pd). To study the chemical interaction between Pd and ZrC, their interface was investigated using X-ray Photoelectron Spectroscopy (XPS). Pd was step-wise deposited onto ZrC in ultra-high vacuum, and the chemical interaction at the interface was monitored, also as a function of temperature (up to 1000 C). In the presentation, details of the chemical interaction and changes in the chemical environment of Pd and their relevance for TRISO fuel will be discussed.
Has Recent Climate Change Caused A Genetic Bottleneck In A Sierra Nevada Population Of The Bushy-Tailed Woodrat?, Mitchell Gritts, Angela D. Hornsby, Majorie D. Matocq
Has Recent Climate Change Caused A Genetic Bottleneck In A Sierra Nevada Population Of The Bushy-Tailed Woodrat?, Mitchell Gritts, Angela D. Hornsby, Majorie D. Matocq
Festival of Communities: UG Symposium (Posters)
Many montane species respond to climate change by shifting their range upslope as temperatures at lower elevations increase. An elevation range shift causes a range contraction that may result in a population bottleneck. Joseph Grinnell surveyed the fauna along the Yosemite transect from 1914 to 1920. In 2003 Craig Moritz and his colleagues began to resurvey the Yosemite transect to assess the faunal change during a century of climate change. The bushy-tailed woodrat suffered severe range contraction and population bottleneck between the two surveys. I will use evolutionary models to determine if the population has suffered a genetic bottleneck.
Event Program, Carl Reiber, Nicholle Booker
Event Program, Carl Reiber, Nicholle Booker
Festival of Communities: UG Symposium (Posters)
UNLV Undergraduates from all departments, programs and colleges participated in a campus-wide symposium on April 16, 2011. Undergraduate posters from all disciplines and also oral presentations of research activities, readings and other creative endeavors were exhibited throughout the festival.
Keynote 2: The Alberta Oil Sands — Wrestling Bitumen Out Of The Wild North, David Rudolph
Keynote 2: The Alberta Oil Sands — Wrestling Bitumen Out Of The Wild North, David Rudolph
North American Energy Water Nexus Roundtable
Athabasca Oil Sand Reserve:
- Oil sands are contained within the Cretaceous McMurray Formation. (149,000 km2)
- 2.5 trillion barrels of extractable oil (~ 25 % of Canada Crude Oil Production)
- Surface mineable deposits cover 2,800 km2
- 450 billion L of process water used annually
- Currently over 130 km2 of tailings ponds (largest man-made structures in the world)
Panel Discussion Presentation: Everything Is Connected — Why Mexico’S Problems Are Everyone’S Problems On The Colorado River, And The Other Way Around, Bret C. Birdsong
Panel Discussion Presentation: Everything Is Connected — Why Mexico’S Problems Are Everyone’S Problems On The Colorado River, And The Other Way Around, Bret C. Birdsong
North American Energy Water Nexus Roundtable
Panel Discussion: U.S.-Mexico Transboundary Perspectives
Colorado River Compact:
Allocates water among Upper Basin and Lower Basin
- 7.5 maf for each basin
- Extra 1 maf for lower basin
Supplies Mexico first from surplus above total apportionment to upper an lower basins
- If surplus insufficient to supply Mexico, then Mexico’s share supplied equally by upper and lower basins
Upper division states “shall not cause” flow to lower basin to be less than 75 maf in 10 years
Panel Discussion Presentation: The Colorado River — Operation And Current Conditions, Lorri Gray-Lee
Panel Discussion Presentation: The Colorado River — Operation And Current Conditions, Lorri Gray-Lee
North American Energy Water Nexus Roundtable
Panel Discussion: U.S.-Mexico Transboundary Perspectives
The Colorado River: Operation and Current Conditions
- Overview of Basin
- Overview of the Interim Guidelines
- Current and Projected System Conditions
Panel Discussion Presentation: Consequences Of Global Climate Change For Water Quality And Community Sustainability Along The U.S.-Mexico Trans-Border Region, Jorge Duran Encalada
Panel Discussion Presentation: Consequences Of Global Climate Change For Water Quality And Community Sustainability Along The U.S.-Mexico Trans-Border Region, Jorge Duran Encalada
North American Energy Water Nexus Roundtable
Panel Discussion: U.S.-Mexico Transboundary Perspectives
Case Studies of Reynosa/McAllen and Laredo/Nuevo Laredo:
- Water availability and quality in Reynosa/McAllen and Laredo/Nuevo Laredo
- Water Consumption
- Socioeconomic Conditions
- Water Quality Scenarios
- Conclusions & Recommendations
Panel Discussion Presentation: U.S. – Mexico Transboundary Perspectives, Martin J. Pasqualetti
Panel Discussion Presentation: U.S. – Mexico Transboundary Perspectives, Martin J. Pasqualetti
North American Energy Water Nexus Roundtable
Panel Discussion: U.S.-Mexico Transboundary Perspectives
Principal Question: What are the implications of the energy/ water nexus at the US/Mexico border?
1. Water Supply and Demand
2. Water Costs of Electricity
3. Virtual Water Transfers
4. Renewable Energy Resources
5. Solar/Water nexus at the US/Mexico Border
Panel Discussion Presentation: Mexico-U.S. Transboundary Perspectives, Sally Spener
Panel Discussion Presentation: Mexico-U.S. Transboundary Perspectives, Sally Spener
North American Energy Water Nexus Roundtable
Panel Discussion: U.S.-Mexico Transboundary Perspectives
IBWC Mission:
The International Boundary and Water Commission, United States and Mexico, is responsible for applying the boundary and water treaties between the two countries and settling differences that arise in their application.
- 1944 Water Treaty
- Colorado River Issues
- Colorado Water Minutes
Panel Discussion Presentation: Canada-U.S. Transboundary Perspectives, David Rudolph
Panel Discussion Presentation: Canada-U.S. Transboundary Perspectives, David Rudolph
North American Energy Water Nexus Roundtable
Panel Discussion: U.S.-Canada Transboundary Perspectives
Longest international border in the world: 8,890km, over 3,000km are water!
- Major transboundary river systems (Columbia, Red River)
- 1997 Red River Flood
- Strategies for future power and water needs
- Canadian resource-based economy
Panel Discussion Presentation: Regional Politics, International Dreams, Kathryn Furlong
Panel Discussion Presentation: Regional Politics, International Dreams, Kathryn Furlong
North American Energy Water Nexus Roundtable
Panel Discussion: U.S.-Canada Transboundary Perspective
The Main Idea:
What are the drivers of hydro-electric development? What are the influences of domestic politics? In what ways are they international?
Panel Discussion Presentation: Columbia River Treaty, Kelvin Ketchum
Panel Discussion Presentation: Columbia River Treaty, Kelvin Ketchum
North American Energy Water Nexus Roundtable
Panel Discussion: U.S.-Canada Transboundary Perspectives
Slide titles:
- Columbia River Treaty – the setting
- What does the Treaty Do?
- Social & Environmental Costs of the Treaty in Canada
- Treaty benefits and term
- Treaty priorities for water usage
- Example of Flood Control Curves
- Actual Treaty operations
- Supplemental operating agreements
- Treaty Implementation
- Reasons for Treaty Success
Panel Discussion Presentation: Thoughts On Energy/Water Nexus – Energy Technologies, California Case, Terry Surles
Panel Discussion Presentation: Thoughts On Energy/Water Nexus – Energy Technologies, California Case, Terry Surles
North American Energy Water Nexus Roundtable
Panel Discussion: U.S.-Canada Transboundary Perspectives
Energy/Security/Water Problem Confluence:
There remains a critical need to make the best use possible of indigenous
national resources
- Water in the Southwest
- Energy resources in the region and nation
International energy resource competition will require effective development and use of national resources
- Geothermal, solar, wind, coal, uranium
Changing climate can produce "winners" as well as "losers" — requires an
understanding of past climate events and the impact on cultures
- Northern countries may benefit: Canada, Russia
- Temperate countries may suffer due to loss of cropland and increase of
tropical diseases and …
Keynote 1: Energy And Water In The Western And Texas Interconnects, Vincent Tidwell
Keynote 1: Energy And Water In The Western And Texas Interconnects, Vincent Tidwell
North American Energy Water Nexus Roundtable
- Estimated Freshwater Withdrawals by Sector: 349 BGD
- U.S. Freshwater Consumption: 100 BGD
- Water for Energy, Energy for Water: Energy and power production requires water; Water production, processing, distribution, and end-use requires energy
Event Program, University Of Nevada, Las Vegas
Event Program, University Of Nevada, Las Vegas
North American Energy Water Nexus Roundtable
The North American Energy-Water Nexus roundtable was held April 1, 2011, to promote the discussion of how energy and water issues converge in addressing international relations. The roundtable focused on water issues specific to the U.S.-Mexico and U.S.-Canada borders, including stakeholder-driven solutions for water policies and water technologies. The event was co-sponsored by the UNLV Urban Sustainability Initiative; Desert Research Institute; the Canadian Consulate of Los Angeles; and the government of Ontario, Canada.
A Short Nuclear Primer, James Conca
A Short Nuclear Primer, James Conca
UNLV Clean Energy Forum
The 2010 UNLV Clean Energy Forum will take place on the UNLV campus September 8th. The event focuses on clean energy production in Nevada, the US Southwest, and clean research projects nationwide. Subject matter will focus on financing, national policy, current technologies, and nuclear energy.
Unlv Clean Energy Forum 2010 Agenda, University Of Nevada, Las Vegas
Unlv Clean Energy Forum 2010 Agenda, University Of Nevada, Las Vegas
UNLV Clean Energy Forum
The 2010 UNLV Clean Energy Forum will take place on the UNLV campus September 8th. The event focuses on clean energy production in Nevada, the US Southwest, and clean research projects nationwide. Subject matter will focus on financing, national policy, current technologies, and nuclear energy.
Unlv Clean Energy Forum 2010 Summary, University Of Nevada, Las Vegas
Unlv Clean Energy Forum 2010 Summary, University Of Nevada, Las Vegas
UNLV Clean Energy Forum
The 2010 UNLV Clean Energy Forum will take place on the UNLV campus September 8th. The event focuses on clean energy production in Nevada, the US Southwest, and clean research projects nationwide. Subject matter will focus on financing, national policy, current technologies, and nuclear energy.
2010 National Clean Energy Summit 3.0: Program Agenda, University Of Nevada Las Vegas, Center For American Progress Action Fund
2010 National Clean Energy Summit 3.0: Program Agenda, University Of Nevada Las Vegas, Center For American Progress Action Fund
National Clean Energy Summit
High-level industry leaders, policy experts, investors, and public officials, along with citizens and the media, will gather in Nevada for a day-long summit hosted by the Center for American Progress Action Fund, Senate Majority Leader Harry Reid (D-NV), and the University of Nevada, Las Vegas. National Clean Energy Summit 3.0: Investing in American Jobs, the third annual summit, will bring together top minds to chart the course for our nation’s clean energy future.
Nvrec Subtask 1.1: Pre-Treatment Of Lignocellulosic Biomass, Amber Broch, Kent Hoekman, Larry Felix, Rick Purcell, Curt Robbins, Wei Yan
Nvrec Subtask 1.1: Pre-Treatment Of Lignocellulosic Biomass, Amber Broch, Kent Hoekman, Larry Felix, Rick Purcell, Curt Robbins, Wei Yan
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.
From Smart Grid To Smart Energy Consumption: Itemizing Electricity Bills To Save Energy, Hampden Kuhns, Morien Roberts
From Smart Grid To Smart Energy Consumption: Itemizing Electricity Bills To Save Energy, Hampden Kuhns, Morien Roberts
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.
Nvrec Subtask 1.2: Thermal Treatment Of Biomass, Curtis Robbins, Eric Ceniceros, Kent Hoekman, Richard Jasoni
Nvrec Subtask 1.2: Thermal Treatment Of Biomass, Curtis Robbins, Eric Ceniceros, Kent Hoekman, Richard Jasoni
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.
Dri-Wind Energy Assessment And Forecasting, Darko Koracin, Michael L. Kaplan, Radian Belu, Kristian Hovarth, Jinhua Jiang, Kristien C. King, Gregory D. Mccurdy, Travis E. Mccord, John F. Mejia, Ramesh Vallore
Dri-Wind Energy Assessment And Forecasting, Darko Koracin, Michael L. Kaplan, Radian Belu, Kristian Hovarth, Jinhua Jiang, Kristien C. King, Gregory D. Mccurdy, Travis E. Mccord, John F. Mejia, Ramesh Vallore
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.
Cultivation Of Algal Biofuel Feedstock In Desert Area Of Southern Nevada Using Municipal Wastewater (Nvrec Project 1.3), Jian Ma, Chulsung Bae, Peter Faught
Cultivation Of Algal Biofuel Feedstock In Desert Area Of Southern Nevada Using Municipal Wastewater (Nvrec Project 1.3), Jian Ma, Chulsung Bae, Peter Faught
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.
Façade Evaluation Facility, Suresh Sadineni, Wendell Cocina, Robert F. Boehm
Façade Evaluation Facility, Suresh Sadineni, Wendell Cocina, Robert F. Boehm
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.