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Articles 31 - 60 of 154
Full-Text Articles in Physical Sciences and Mathematics
Hf Radar Performance In A Low-Energy Environment: Codar Seasonde Experience On The West Florida Shelf, Yonggang Liu, Robert H. Weisberg, Clifford R. Merz, Sage Litchtenwalner, Gary J. Kirkpatrick
Hf Radar Performance In A Low-Energy Environment: Codar Seasonde Experience On The West Florida Shelf, Yonggang Liu, Robert H. Weisberg, Clifford R. Merz, Sage Litchtenwalner, Gary J. Kirkpatrick
Yonggang Liu
Three long-range (5 MHz) Coastal Ocean Dynamics Application Radar (CODAR) SeaSonde HF radars overlooking an array of as many as eight moored acoustic Doppler current profilers (ADCPs) have operated on the West Florida Shelf since September 2003 for the purpose of observing the coastal ocean currents. HF radar performance on this low-energy (currents and waves) continental shelf is evaluated with respect to data returns, the rms differences between the HF radar and the ADCP radial currents, bearing offsets, and radial velocity uncertainties. Possible environmental factors affecting the HF radar performance are discussed, with the findings that both the low-energy sea …
Economic Analysis Of A Brackish Water Photovoltaic-Operated (Bwro-Pv) Desalination System, Ali Al-Karaghouli, Lawrence L. Kazmerski
Economic Analysis Of A Brackish Water Photovoltaic-Operated (Bwro-Pv) Desalination System, Ali Al-Karaghouli, Lawrence L. Kazmerski
Publications (E)
The photovoltaic (PV)-powered reverse-osmosis (RO) desalination system is considered one of the most promising technologies in producing fresh water from both brackish and sea water, especially for small systems located in remote areas. We analyze the economic viability of a small PV-operated RO system with a capacity of 5 m3/day used to desalinate brackish water of 4000 ppm total dissolve solids, which is proposed to be installed in a remote area of the Babylon governorate in the middle of Iraq; this area possesses excellent insolation throughout the year. Our analysis predicts very good economic and environmental benefits of …
Unlv Magazine, Tony Allen, Shane Bevell, Donna Mcaleer, Ched Whitney, Cate Weeks
Unlv Magazine, Tony Allen, Shane Bevell, Donna Mcaleer, Ched Whitney, Cate Weeks
UNLV Magazine
No abstract provided.
El Movimiento Verde En La Tierra De La Albiceleste: Obstáculos Y Oportunidades Para La Energía Limpia En Argentina, Robert Strickling
El Movimiento Verde En La Tierra De La Albiceleste: Obstáculos Y Oportunidades Para La Energía Limpia En Argentina, Robert Strickling
Independent Study Project (ISP) Collection
Para combatir el cambio climático, países por todo el mundo están haciendo políticas para incentivar el desarrollo de energía limpia. Cada país tiene sus propias problemas y oportunidades para reemplazar su uso de energía con fuentes limpias como energía eólica y solar. Este estudio miró a la situación en Argentina y usó las opiniones de académicos y con actores. Con sus opiniones y experiencias y con estudios de caso de países con políticas más desarrollados muestra la situación actual y soluciones posibles para el futuro. Los problemas que emergieron incluye el desarrollo de líneas de transmisión, la competitividad de energía …
Balancing Limiting Factors & Economic Drivers For Sustainable Midwestern Us Agricultural Residue Feedstock Supplies, Wally W. Wilhelm, J. Richard Hess, Douglas L. Karlen, Jane M. F. Johnson, David J. Muth Jr., John M. Baker, Hero T. Gollany, Jeff M. Novak, Diane E. Scott, Gary E. Varvel
Balancing Limiting Factors & Economic Drivers For Sustainable Midwestern Us Agricultural Residue Feedstock Supplies, Wally W. Wilhelm, J. Richard Hess, Douglas L. Karlen, Jane M. F. Johnson, David J. Muth Jr., John M. Baker, Hero T. Gollany, Jeff M. Novak, Diane E. Scott, Gary E. Varvel
Douglas L Karlen
Advanced biofuels will be developed using cellulosic feedstock rather than grain or oilseed crops that can also be used for food and feed. To be sustainable, these new agronomic production systems must be economically viable without degrading the soil and other natural resources. This review examines six agronomic factors that collectively define many of the limits and opportunities for harvesting crop residue for biofuel feedstock in the midwestern United States. The limiting factors include soil organic carbon, wind and water erosion, plant nutrient balance, soil water and temperature dynamics, soil compaction, and off-site environmental impacts. These are discussed in relationship …
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.
Site-Specific Photocatalytic Splitting Of Methanol On Tio2(110), Chuanyao Zhou, Zefeng Ren, Shijing Tan, Zhibo Ma, Xinchun Mao, Dongxu Dai, Hongjun Fan, Xueming Yang, Jerry L. Larue, Russell Cooper, Alec M. Wodtke, Zhou Wang, Zhenyu Li, Bing Wang, Jinlong Yang, Jianguo Hou
Site-Specific Photocatalytic Splitting Of Methanol On Tio2(110), Chuanyao Zhou, Zefeng Ren, Shijing Tan, Zhibo Ma, Xinchun Mao, Dongxu Dai, Hongjun Fan, Xueming Yang, Jerry L. Larue, Russell Cooper, Alec M. Wodtke, Zhou Wang, Zhenyu Li, Bing Wang, Jinlong Yang, Jianguo Hou
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Clean hydrogen production is highly desirable for future energy needs, making the understanding of molecular-level phenomena underlying photocatalytic hydrogen production both fundamentally and practically important. Water splitting on pure TiO2 is inefficient, however, adding sacrificial methanol could significantly enhance the photocatalyzed H2 production. Therefore, understanding the photochemistry of methanol on TiO2 at the molecular level could provide important insights to its photocatalytic activity. Here, we report the first clear evidence of photocatalyzed splitting of methanol on TiO2 derived from time-dependent two-photon photoemission (TD-2PPE) results in combination with scanning tunneling microscopy (STM). STM tip induced molecular manipulation …
Empirical Geographic Modeling Of Switchgrass Yields In The United States, Henriette I. Jager, Latha M. Baskaran, Craig C. Brandt, Ethan B. Davis
Empirical Geographic Modeling Of Switchgrass Yields In The United States, Henriette I. Jager, Latha M. Baskaran, Craig C. Brandt, Ethan B. Davis
Dartmouth Scholarship
Switchgrass (Panicum virgatum L.) is a perennial grass native to the United States that has been studied as a sustainable source of biomass fuel. Although many field‐scale studies have examined the potential of this grass as a bioenergy crop, these studies have not been integrated. In this study, we present an empirical model for switchgrass yield and use this model to predict yield for the conterminous United States. We added environmental covariates to assembled yield data from field trials based on geographic location. We developed empirical models based on these data. The resulting empirical models, which account for spatial …
Energetyka Niskoemisyjna, Wojciech M. Budzianowski
Energetyka Niskoemisyjna, Wojciech M. Budzianowski
Wojciech Budzianowski
No abstract provided.
Physical And Chemical Characterization Of Fuel Ethanol Coproducts Relevant To Value-Added Uses, Rumela Bhadra, Kurt A. Rosentrater, Kasiviswanathan Muthukumarappan
Physical And Chemical Characterization Of Fuel Ethanol Coproducts Relevant To Value-Added Uses, Rumela Bhadra, Kurt A. Rosentrater, Kasiviswanathan Muthukumarappan
Kurt A. Rosentrater
One of the fastest growing industries in the United States is the fuel ethanol industry. In terms of ethanol production capability, the industry has grown by more than 600% since the year 2000. The major coproducts from corn-based ethanol include distillers dried grains with solubles (DDGS) and carbon dioxide. DDGS is used as a livestock feed because it contains high quantities of protein, fiber, amino acids, and other nutrients. The goal of this study was to quantify various chemical and physical properties of DDGS, distillers wet grains (DWG), and distillers dried grain (DDG) from several plants in South Dakota. Chemical …
User's Guide To Mbc3: Multi-Blade Coordinate Transformation Code For 3-Bladed Wind Turbine, G. S. Bir
User's Guide To Mbc3: Multi-Blade Coordinate Transformation Code For 3-Bladed Wind Turbine, G. S. Bir
Publications (E)
The dynamics of wind turbine rotor blades are conventionally expressed in rotating frames attached to the individual blades. The tower-nacelle subsystem though, sees the combined effect of all rotor blades, not the individual blades. Also, the rotor responds as a whole to excitations such as aerodynamic gusts, control inputs, and tower-nacelle motion—all of which occur in a nonrotating frame. Multi-blade coordinate transformation (MBC) helps integrate the dynamics of individual blades and express them in a fixed (nonrotating) frame. MBC involves two steps: transforming the rotating degrees of freedom and transforming the equations of motion. Reference 1 details the MBC operation. …
Green Power Marketing In The United States: A Status Report (2009 Data), Lori Bird, Jenny Sumner
Green Power Marketing In The United States: A Status Report (2009 Data), Lori Bird, Jenny Sumner
Publications (E)
This report documents green power marketing activities and trends in the United States. Aggregate green power sales data for all voluntary purchase markets across the United States are presented for 2009. The data presented in this report are based primarily on figures provided to NREL by utilities and independent renewable energy marketers. Because data cannot be obtained from all market participants, the estimates presented here likely represent an underestimate of the market size. Key trends identified in this year’s report include:
• In 2009, total retail sales of renewable energy in voluntary markets exceeded 30 million MWh, an increase of …
Compressed Natural Gas (Cng) Transit Bus Experience Survey: April 2009—April 2010, R. Adams, D. B. Horne
Compressed Natural Gas (Cng) Transit Bus Experience Survey: April 2009—April 2010, R. Adams, D. B. Horne
Publications (T)
The U.S. Department of Energy (DOE) and the National Renewable Energy Laboratory (NREL) commissioned this survey to collect and analyze experiential data from U.S. transit agencies with varying degrees of compressed natural gas (CNG) bus and station experience. This information helps DOE and NREL determine areas of CNG transit bus success and priority areas for which further technical or other assistance might be required to enable success.
Clean Vehicle Education Foundation (CVEF) staff and subcontractors developed a battery of questions and identified 10 transit agencies to represent all U.S. transit agencies that use CNG buses, accounting for the diversity in …
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.
The Way Forward: A Vision For Nevada’S Energy Future, David Sims
The Way Forward: A Vision For Nevada’S Energy Future, David Sims
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.
Nshe And Nirec: Strengthening Ties To Increase Impact, Li Han Chan
Nshe And Nirec: Strengthening Ties To Increase Impact, Li Han Chan
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.
Biofuels-Biomass Group Nv-Rec, Kent Hoekman, Chulsung Bae, Chuck Coronella, John Cushman, Yingtao Jiang, Jian Ma, Mano Misra, Oliver Hemmers, Victor Vasquez
Biofuels-Biomass Group Nv-Rec, Kent Hoekman, Chulsung Bae, Chuck Coronella, John Cushman, Yingtao Jiang, Jian Ma, Mano Misra, Oliver Hemmers, Victor Vasquez
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.
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.
Schedule Of Events, University Of Nevada, Las Vegas
Schedule Of Events, University Of Nevada, Las Vegas
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.
Welcome To The Second Annual Nevada Renewable Energy Consortium Meeting, University Of Nevada, Las Vegas
Welcome To The Second Annual Nevada Renewable Energy Consortium Meeting, University Of Nevada, Las Vegas
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.
Wind Flow Modeling For Wind Energy Analysis Of The Nellis Dunes Area In Nevada, Upendra Rangegowda
Wind Flow Modeling For Wind Energy Analysis Of The Nellis Dunes Area In Nevada, Upendra Rangegowda
UNLV Theses, Dissertations, Professional Papers, and Capstones
A wind energy analysis of the Nellis Dunes area in Nevada was conducted. A DEM file which contains the elevation data was used to generate the surface model and to create a 3-D mesh of the region. Local meteorological tower data collected for a period of one year was used to generate the diagnostic initial wind fields. Upper level wind fields were created using a surface boundary layer technique along with linear interpolation of the tower level wind fields. The vertical components of the velocities were adjusted using the equation of continuity. Mass consistent 3-D wind fields were then calculated …
Further Developments On The Geothermal System Scoping Model, Mark Antkowiak, Rosemary Sargent, Jesse W. Geiger
Further Developments On The Geothermal System Scoping Model, Mark Antkowiak, Rosemary Sargent, Jesse W. Geiger
Publications (E)
The fields of well construction and engineering, power plant construction and engineering, and reservoir engineering often proceed independently of one another. Yet the subsystems of a geothermal plant with which each of these fields is concerned need to be integrated in order to create a viable geothermal power system and make enhanced (or engineered) geothermal systems (EGS) a technical and an economic reality. Furthermore, each of these subsystems need to be examined in the context of the overall power system to aid with plant construction, and–more salient to the U.S. Department of Energy–to help determine best investment of research dollars. …
A Life Cycle Cost Analysis Of Large-Scale Thermal Energy Storage Technologies For Buildings Using Combined Heat And Power, Kenneth Gaine, Aidan Duffy
A Life Cycle Cost Analysis Of Large-Scale Thermal Energy Storage Technologies For Buildings Using Combined Heat And Power, Kenneth Gaine, Aidan Duffy
Conference Papers
Buildings account for approximately 40% of energy consumption and greenhouse gas (GHG) emissions in developed economies, of which approximately 55% of building energy is used for heating and cooling. The reduction of building-related GHG emissions is a high international policy priority. For this reason and because there are many technical solutions for this, these polices should involve significant improvements in the uptake of small-scale energy efficient (EE) systems. However the widespread deployment of many technologies, must overcome a number of barriers, one of which is a temporal (diurnal or seasonal) mismatch between supply and demand. Costeffective thermal storage solutions have …