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Displaying 20701 - 20725 of 73830

Fluid Transport in High-Volume Fly Ash Mixtures with and without Internal Curing

October 7, 2013
Author(s)
Igor de la Varga, Robert Spragg, Carmelo di Bella, Javier Castro, Dale P. Bentz, Jason Weiss
The transport of fluid and ions in concrete mixtures is central to many aspects of concrete deterioration. As a result, transport properties are frequently measured as an indication of the durability that a concrete mixture may be expected to have. This

Mechanism for controlling the exciton fine structure in quantum dots using electric fields: Manipulation of exciton orientation and exchange splitting at the atomic scale

October 7, 2013
Author(s)
Garnett W. Bryant, Natalia Malkova, James S. Sims
We use atomistic tight-binding theory with a configuration interaction description of Coulomb and exchange effects to describe excitons in quantum dots in a vertical electric field. We show that field-induced manipulation of exciton orientation and phase

Re-projection of Terabyte-Sized Images

October 7, 2013
Author(s)
Peter Bajcsy, Antoine Vandecreme, Mary C. Brady
This work addresses the problem of re-projecting a terabyte-sized 3D data set represented as a set of 2D Deep Zoom pyramids. In general, a re-projection for small 3D data sets is executed directly in RAM. However, RAM becomes a limiting factor for terabyte

Terabyte Size Image Computations on Hadoop Cluster Platforms

October 7, 2013
Author(s)
Peter Bajcsy, Antoine Vandecreme, Julien M. Amelot, Phuong T. Nguyen, Joe Chalfoun, Mary C. Brady
We present a characterization of four basic terabyte size image computations on a Hadoop cluster in terms of their relative efficiency according to the modified Amdahl’s law. The work is motivated by the fact that there is a lack of standard benchmarks and

Biological Uptake and Depuration of Radio-labeled Graphene by Daphnia magna

October 5, 2013
Author(s)
Xiangke Guo, Shipeng Dong, Elijah Petersen, Shiziang Gao, Qingguo Huang, Cheng Gu, Liang Mao
BACKGROUND: Graphene layers are potential candidates in a large number of applications due to their novel properties. However, little is known about their behaviors and associated potential risks largely as a result of a lack of quantification techniques

Analytical Electron Microscopy of Semiconductor Nanowire Functional Materials and Devices for Emerging Applications.

October 2, 2013
Author(s)
Vladimir P. Oleshko, Elissa H. Williams, Albert Davydov, Sergiy Krylyuk, Abhishek Motayed, Dmitry A. Ruzmetov, Thomas F. Lam, Henri J. Lezec, Albert A. Talin
Functionalized individual semiconductor nanowires (SNWs) and 3D SNW arrays attract a continuously growing interest for applications in optoelectronics, sensing, and energy storage. High-resolution field-emission analytical (S)TEM enables critical insights

Frictional properties of native and functionalized type I collagen thin films

October 2, 2013
Author(s)
Koo-hyun Chung, Antony Chen, Christopher Anderton, Kiran Bhadriraju, Anne L. Plant, Brian G. Bush, Robert F. Cook, Frank W. DelRio
Frictional properties of native and fibronectin (FN)-functionalized type I collagen (COL) thin films were studied via atomic force microscopy. The COL lateral contact stiffness was dependent only on the hydration state, indicating that shear deformation

Report of the Key Comparison CCPR-K5 Spectral Diffuse Reflectance

October 2, 2013
Author(s)
Yoshihiro Ohno, Maria E. Nadal, Kenneth L. Eckerle, E. A. Early
This is an official report from Consultative Committee of Photometry and Radiometry (CCPR) on the Key Comparison CCPR-K5 spectral diffuse reflectance, conducted in the framework of CIPM Mutual Recognition Arrangement (MRA). 13 national laboratories

Some Journal Metrics for Forensic Science International: Genetics

October 2, 2013
Author(s)
John M. Butler
Forensic Science International: Genetics, which is the official journal of the International Society for Forensic Genetics, has grown in readership and impact factor since its introduction in 2007. This article reviews some metrics of the 32 issues

The Triad of Scientific Publication: Reading, Writing, and Reviewing

October 2, 2013
Author(s)
John M. Butler
A workshop on scientific publication was presented at the 2013 ISFG conference by the author, who has written four widely-used textbooks and 150 peer-reviewed articles and invited book chapters. This article is a summary of key points made during the

Biodegradation of 14C-labeled Multi-Walled Carbon Nanotubes

October 1, 2013
Author(s)
Liwen Zhang, Elijah Petersen, Mussie Habteselassie, Qingguo Huang
Environmental transformations of multi-walled carbon nanotubes (MWCNTs) can change their environmental fate and is important to their life cycle assessment, but has not yet been fully investigated due to its high recalcitrance. We are reporting a bacterial

Fire Dynamics: The Science of Fire Fighting

October 1, 2013
Author(s)
Daniel M. Madrzykowski
Fire dynamics can provide a firefighter with means to understand how a fire will grow and spread within a structure and how best to control that growth. Researchers have generated experimental results and computer models to explain how fire dynamics
Displaying 20701 - 20725 of 73830
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