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Energy

Alternative energy

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Displaying 651 - 675 of 706

Ignition Delay of Fatty Acid Methyl Ester Fuel Droplets: Microgravity Experiments and Detailed Numerical Modeling

June 1, 2010

Author(s)

Anthony J. Marchese, Timothy L. Vaughn, Kenneth Kroenlein, Frederick L. Dryer

Recent optical engine studies have linked increases in NOx emissions from fatty acid methyl ester combustion to differences in the premixed autoignition zone of the diesel fuel jet. In this study, injection (and subsequent ignition) of single, isolated

Investigating the Unique Properties of Cuphea Derived Biodiesel with the Advanced Distillation Curve Method

May 17, 2010

Author(s)

Tara Lovestead, Bret Windom, Thomas J. Bruno

Currently, there is a desire to extend or enhance petroleum-derived diesel fuel with biodiesel fuel. Biodiesel fuel is a renewable, biomass-derived fluid that is biodegradable, nontoxic, and a better lubricant compared to petroleum-derived diesel fuels. In

Safety Considerations in Designing a Facility for Mechanical Property Measurements in High Pressure Gaseous Hydrogen Environments.

May 4, 2010

Author(s)

Andrew J. Slifka, Yaakov Levy, Nicholas Nanninga, Thomas A. Siewert, Joseph D. McColskey

N/A

Measuring the extent of phase separation in P3HT/PCBM photovoltaic blends with 1H spin diffusion NMR spectroscopy

April 5, 2010

Author(s)

Ryan C. Nieuwendaal, Chad R. Snyder, Regis J. Kline, Eric K. Lin, David L. VanderHart, Dean M. DeLongchamp

Challenges and Opportunities of Organic Electronics

April 2, 2010

Author(s)

Calvin Chan

Organic Electronics: Challenges and Opportunities

March 31, 2010

Author(s)

Calvin Chan

Standard Reference Data for the Thermophysical Properties of Biofuels

March 25, 2010

Author(s)

Mark O. McLinden, Thomas J. Bruno, Michael D. Frenkel, Marcia L. Huber

The thermophysical properties of biofuels are required for the efficient design of every step in their production, distribution, and utilization. We provide an overview of properties research at the National Institute of Standards and Technology (NIST). We

Relating Complex Fluid Composition and Thermophysical Properties with the Advanced Distillation Curve Approach

March 17, 2010

Author(s)

Thomas J. Bruno, Lisa S. Ott, Tara M. Lovestead, Marcia L. Huber

Complex fluids have long posed a significant challenge in our ability to characterize and model fluid properties. Here, we consider complex fluids to be mixtures with many components that can differ significantly in polarity and polarizability. The

Neutron radioscopy: industrial and scientific applications

March 15, 2010

Author(s)

Daniel Hussey, Michael A. Hickner

Neutron imaging has been a unique, precise, measurement tool for water transport in proton exchange membrane fuel cells (PEMFCs), enabling the direct measurement of the water distribution in standard, commercially viable fuel cell hardware. Thus, in the

Ultrafast Terahertz Spectroscopy for Measuring Carrier Dynamics in Nanoscale Photovoltaic Materials

February 15, 2010

Author(s)

Okan Esenturk, Paul A. Lane, Joseph S. Melinger, Edwin J. Heilweil

Femtosecond pump-probe methods are useful tools for investigating transient electronic and vibrational states of conducting materials and molecular photochemistry. Ultraviolet and visible excitation pulses (

Complex Fluid Analysis with the Advanced Distillation Curve Approach

February 1, 2010

Author(s)

Thomas J. Bruno, Lisa S. Ott, Beverly L. Smith, Tara M. Lovestead

An improved method for measuring distillation curves reveals the physicochemical properties of complex fluids such as fuels.

System Dynamics Modeling of Corn Ethanol as a Bio Transportation Fuel in the United States

January 28, 2010

Author(s)

Deogratias Kibira, Guodong Shao, Stephen -. Nowak

The production capacity of corn ethanol as a transportation fuel is experiencing rapid growth in the United States. The demand is driven by increased prices of gasoline, government mandates, incentives, and the need to achieve energy independence

The Composition Explicit Distillation Curve Technique: Relating Chemical Analysis and Physical Properties of Complex Fluids

November 17, 2009

Author(s)

Thomas J. Bruno, Lisa S. Ott, Tara M. Lovestead, Marcia L. Huber

The analysis of complex fluids such as crude oils, fuels, vegetable oils and mixed waste streams poses significant challenges arising primarily from the multiplicity of components, the different properties of the components (polarity, polarizability, etc)

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