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University of Nebraska - Lincoln

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Articles 151 - 180 of 200

Full-Text Articles in Oil, Gas, and Energy

Energy Responsibility, Lee Kottmeyer Oct 2013

Energy Responsibility, Lee Kottmeyer

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Energy Responsibility


The War On American Ethanol, Jared Korth Oct 2013

The War On American Ethanol, Jared Korth

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

The War on American Ethanol


Electric Vehicles, Clean Or Dirty?, Nathan Mccormick Oct 2013

Electric Vehicles, Clean Or Dirty?, Nathan Mccormick

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Electric Vehicles, Clean or Dirty?


Avoiding The Bust After The Boom, Eric Macke Oct 2013

Avoiding The Bust After The Boom, Eric Macke

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Avoiding the Bust After the Boom


Electric Vehicles: More Practical Than We Realize, Mark Friend Oct 2013

Electric Vehicles: More Practical Than We Realize, Mark Friend

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Electric Vehicles: More Practical than We Realize


Not All Wind Energy Is The Best For Nebraska, Dylan Mangel Oct 2013

Not All Wind Energy Is The Best For Nebraska, Dylan Mangel

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Not All Wind Energy is the Best for Nebraska


Reviewing Models Of Land Availability And Dynamics For Biofuel Crops In The United States And The European Union, Ruopu Li, Nicola Di Virgilio, Qingfeng Guan, Song Feng, Goetz M. Richter Jul 2013

Reviewing Models Of Land Availability And Dynamics For Biofuel Crops In The United States And The European Union, Ruopu Li, Nicola Di Virgilio, Qingfeng Guan, Song Feng, Goetz M. Richter

School of Natural Resources: Faculty Publications

The biofuel-related land use in the USA and the EU has significantly expanded during the last decade; models have been used to estimate land availability and demand in these regions. This paper provides an overview of different land-use modeling practices applicable to first- and second-generation biofuels. We review the importance of different land categories for biofuels, modeling approaches (top-down/bottom-up) and their integration, data availability for calibration and validation, model scale, and uncertainty. Possible future changes of biofuel land use and research gaps and limitations are synthesized. Key issues are the lack of data for independent validation and the need for …


Soil Organic Carbon Dynamics In Agriculture: Model Development And Application From Daily To Decadal Timescales, Matthew P. Pelton May 2013

Soil Organic Carbon Dynamics In Agriculture: Model Development And Application From Daily To Decadal Timescales, Matthew P. Pelton

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

Soil carbon (C) is the largest terrestrial C pool globally, containing more C than the atmosphere and biosphere. Soil organic carbon (SOC) is a source and sink of CO2 emissions to and from the atmosphere, thus influencing future climate change. Understanding SOC dynamics is also important for maintaining C stocks to sustain and improve crop yields. An existing model to estimate changes in SOC due to respiration was modified to operate in three computational platforms: MS Excel, MS Excel with Visual Basic for Applications, and supercomputing. This model was validated against CO2 flux data from a 9-year field …


Qualitative And Quantitative Analysis Of Lignocellulosic Biomass Using Infrared Techniques: A Mini-Review, Feng Xu, Jianming Yu, Tesfaye Tesso, Floyd Dowell, Donghai Wang Jan 2013

Qualitative And Quantitative Analysis Of Lignocellulosic Biomass Using Infrared Techniques: A Mini-Review, Feng Xu, Jianming Yu, Tesfaye Tesso, Floyd Dowell, Donghai Wang

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Current wet chemical methods for biomass composition analysis using two-step sulfuric acid hydrolysis are time-consuming, labor-intensive, and unable to provide structural information about biomass. Infrared techniques provide fast, low-cost analysis, are non-destructive, and have shown promising results. Chemometric analysis has allowed researchers to perform qualitative and quantitative study of biomass with both near-infrared and mid-infrared spectroscopy. This review summarizes the progress and applications of infrared techniques in biomass study, and compares the infrared and the wet chemical methods for composition analysis. In addition to reviewing recent studies of biomass structure and composition, we also discuss the progress and prospects for …


Green Crude, Wyatt Smith Oct 2012

Green Crude, Wyatt Smith

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Green Crude


Plankton Evolution Driven By Paleoceanographic Change: Prediscosphaera From The Mid-Cretaceous In The Western North Atlantic, Kristen L. Mitchell Apr 2012

Plankton Evolution Driven By Paleoceanographic Change: Prediscosphaera From The Mid-Cretaceous In The Western North Atlantic, Kristen L. Mitchell

Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research

Well-preserved nannofossil assemblages in late Albian and Cenomanian hemipelagic sections from Ocean Drilling Program (ODP) Leg 171B preserve a record of the early history and adaptive radiation of the calcareous nannofossil genus Prediscosphaera. There was a significant rise in the abundance of the genus (from an average of 2% in the early late Albian to about 6% in the latest Albian and Cenomanian. This rise, and other shorter term pulses of increased generic abundance, corresponds to black shale deposition episodes. Twelve distinct morphotypes that were derived from the long-ranging Prediscosphera columnata and Prediscosphaera spinosa, are recognized and differentiated …


Energy Of The Future: Nuclear Energy, Najla Zogheib Jan 2012

Energy Of The Future: Nuclear Energy, Najla Zogheib

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Energy of the Future: Nuclear Energy


Nebraska’S Secret, Shea Winkler Jan 2012

Nebraska’S Secret, Shea Winkler

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Nebraska’s Secret


Thorium; Fuel For Thought?, Miles Wynn Jan 2012

Thorium; Fuel For Thought?, Miles Wynn

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Thorium; Fuel for Thought?


How Wind Energy May Be The Next Big Thing, Erinn Richert Jan 2012

How Wind Energy May Be The Next Big Thing, Erinn Richert

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

How Wind Energy May Be the Next Big Thing


“A Portfolio Of Dreams: Clean Energy As An Investment”, Eric Holley Jan 2012

“A Portfolio Of Dreams: Clean Energy As An Investment”, Eric Holley

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

“A Portfolio of Dreams: Clean Energy as an Investment”


Indoor Climate-Control, Joseph Komenda Jan 2012

Indoor Climate-Control, Joseph Komenda

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Indoor Climate-control


From Invader To Income, Tatiana Height Jan 2012

From Invader To Income, Tatiana Height

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

From Invader to Income


Is A Carbon Tax The Answer?, Sarah Gardels Jan 2012

Is A Carbon Tax The Answer?, Sarah Gardels

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Is A Carbon Tax the Answer?


Bottled Disaster, Alex Arneson Jan 2012

Bottled Disaster, Alex Arneson

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Bottled Disaster


Green Crude: Energy For The New Climate Era, Tobias Burnham Jan 2012

Green Crude: Energy For The New Climate Era, Tobias Burnham

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Green Crude: Energy for the New Climate Era


Producing Biofuels Without Raising The Food Price, Lais Speranza Jan 2012

Producing Biofuels Without Raising The Food Price, Lais Speranza

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Producing Biofuels without Raising the Food Price


Why We Need Cafe Standards Or A Higher Gasoline Tax, Celeste Wanner Jan 2012

Why We Need Cafe Standards Or A Higher Gasoline Tax, Celeste Wanner

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Why We need CAFE Standards or a Higher Gasoline Tax


Africa's Next Step, Kyle Pierce Jan 2012

Africa's Next Step, Kyle Pierce

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Africa's Next step


Integrating Green Energy, Kent Gunderson Jan 2012

Integrating Green Energy, Kent Gunderson

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Integrating Green Energy


There Is No Planet B, Lukas Mullins Jan 2012

There Is No Planet B, Lukas Mullins

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

There is No Planet B


Nuclear Power Option, Kyle Mclaughlin Jan 2012

Nuclear Power Option, Kyle Mclaughlin

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Nuclear Power Option


Weighing The Merits Of Corn Ethanol, Christopher Fulk Jan 2012

Weighing The Merits Of Corn Ethanol, Christopher Fulk

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Weighing the Merits of Corn Ethanol


Portfolio Planning For Planet Earth, Alexandra Brown Jan 2012

Portfolio Planning For Planet Earth, Alexandra Brown

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Portfolio Planning for Planet Earth


The Energy Independence And Security Act Mandates Biofuel Diversity, Hannah Janda Jan 2012

The Energy Independence And Security Act Mandates Biofuel Diversity, Hannah Janda

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

The Energy Independence and Security Act Mandates Biofuel Diversity