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Displaying 18601 - 18625 of 74047

Combinatorial Cassette for Screening of Osteogenesis by Transplanted Human Bone Marrow Stromal Cells

April 19, 2014
Author(s)
Subhadip Bodhak, Sheng Lin-Gibson, Carl G. Simon Jr., Luis Fernandez de Castro Diaz, Pamela G. Robey, Sergei A. Kuznetsov, Tina Kilts, Marian F. Young
The use of in vivo transplantation assays under defined experimental conditions has become a valuable standard for evaluating osteogenic potential of different stem cell populations and is the subject of ongoing pre-clinical reconstructive therapy research

Evaluation of the effect of donor variability on stem cell response to biomaterials

April 19, 2014
Author(s)
Stephen J. Florczyk, Bryan A. Baker, Sumona Sarkar, Jennifer H. McDaniel, Patrick S. Pine, Marc L. Salit, Carl G. Simon Jr.
Previous research from our group indicated that nanofiber scaffolds promoted osteogenic differentiation of human bone marrow stromal cells (hBMSC) and similar gene expression to osteogenic supplement (OS) induced osteogenic differentiation [1]. Biological

Machine Learning Analysis for Identification of Cell Shape Metrics Associated with Stem Cell Differentiation in Nanofiber Scaffolds

April 19, 2014
Author(s)
Desu Chen, Sumona Sarkar, Stephen J. Florczyk, Subhadip Bodhak, Carl G. Simon Jr., Joy P. Dunkers, Julian Candia, Wolfgang Losert
Cell shape has been demonstrated to be closely related to cell function and may be an important predictor of cell fate. Many metrics are available to describe cell shape, however the relationship of these metrics to cell fate are not well understood

Measuring Organelle Shape in 3D in Stem Cells Cultured on Nanofiber Scaffolds

April 19, 2014
Author(s)
Carl G. Simon Jr., Peter Bajcsy, Wojtek J. Tutak, Jyotsnendu J. Giri
Previous work has demonstrated that culture of osteoprogenitor cells on nanofiber scaffolds can potentiate osteogenic differentiation [1-4]. Culture of cells in nanofiber scaffolds causes changes to cell morphology, suggesting that morphological changes

Comparison of the Properties of Cellulose Nanocrystals and Cellulose Nanofibrils Isolated From Bacteria, Tunicate, and Wood Processed Using Acid, Enzymatic, Mechanical, and Oxidative Methods

April 18, 2014
Author(s)
Iulia A. Sacui, Jeffrey W. Gilman, Ryan C. Nieuwendaal, Stephan J. Stranick, Henryk Szmacinski, Mehdi Jorfi, Christopher Weder, Johan Foster, Richard Olsson, Daniel Burnett
This work describes the study and characterization of native cellulose nanocrystals and nanofibrils (CNCs, CNFs), whose crystallinity, morphology, aspect ratio, and surface chemistry depend on the raw material source and hydrolysis conditions. Measurement

Efficient Field Coverage in Mobile Sensor Networks: A CPS Perspective

April 17, 2014
Author(s)
Kamran Sayrafian, Hamid Mahboubi, Amir G. Aghdam
Mobile sensor networks (MSN) are an excellent example of Cyber-Physical Systems where motion capability of the network nodes offers an opportunity to co-design the physical and cyber components of the system. As sensor nodes have limited energy resources

Residential Home Performance Contracting Round Robin Guidelines

April 17, 2014
Author(s)
Michael Lubliner, Rick Kunkle, David Hales, Melinda Spencer
These guidelines describe the important considerations for planning, conducting, analyzing, and disseminating the results of a Home Performance Contactor (HPC) round robin study of a specific aspect of the HPC industry services. The round robin study

Solution-based functionalization of gallium nitride nanowires for protein sensor development

April 17, 2014
Author(s)
Albert Davydov, Elissa H. Williams, Vladimir P. Oleshko, Kristen L. Steffens, Igor Levin, Nancy J. Lin, Kristine A. Bertness, Amy Manocchi, M V. Rao, John A. Schreifels
A solution-based functionalization method for the specific and selective attachment of the streptavidin (SA) protein to gallium nitride (GaN) nanowires (NWs) is presented. By exploiting streptavidin's strong affinity for its ligand biotin, SA

Strict Limit on In-Plane Ordered Magnetic Dipole Moment in URu 2 Si 2

April 17, 2014
Author(s)
Kathryn Aileen Ross, Leland Weldon Harriger, Z. Yamani, W. J. L. Buyers, J.D. Garrett, A.A. Menovsky, J.A. Mydosh, Collin L. Broholm
Neutron diffraction is used to examine the polarization of weak static antiferromagnetism in high quality single crystalline URu 2Si 2. As previously documented, elastic Bragg-like diffraction develops for temperature Τ HO = 17.5 K at q = (100) but not at

Dietary Supplement Laboratory Quality Assurance Program: Exercise J Final Report

April 16, 2014
Author(s)
Laura J. Wood, Melissa M. Phillips, Catherine A. Rimmer, Mary Bedner, Kaitlyn Chieh, Rick L. Paul
The NIST Dietary Supplement Laboratory Quality Assurance Program (DSQAP) was established in collaboration with the National Institutes of Health (NIH) Office of Dietary Supplements (ODS) in 2007 to enable members of the dietary supplements community to

Multiple-time-scale blinking in InAs quantum dot single photon sources

April 16, 2014
Author(s)
Marcelo I. Davanco, C S. Hellberg, Serkan Ates, Antonio Badolato, Kartik A. Srinivasan
We use photon correlation measurements to study blinking in single, epitaxially-grown selfassembled InAs quantum dots situated in circular Bragg grating and microdisk cavities. The normalized second-order correlation function g(2)( t) is studied across

Performance Testing and Evaluation of Transformative Apps Devices

April 16, 2014
Author(s)
Anthony J. Downs, Lisa J. Fronczek, Emile L. Morse, Brian A. Weiss, Ian P. Bashor, Craig I. Schlenoff
Transformative Apps (TransApps) is a Defense Advanced Research Projects Agency (DARPA) funded program whose goal is to develop a range of militarily-relevant software applications ("apps") to enhance the operational effectiveness of military personnel on

Powder Bed Fusion Machine Performance Testing

April 16, 2014
Author(s)
Shawn P. Moylan, Joseph Drescher, M A. Donmez
Unlike conventional machining where there is a near 1:1 correspondence of machine performance to the geometry of the workpiece, the accuracy of the machine components is only one of the contributors to the quality of a finished AM part. Rather, there is

Study of Accuracy of Parts Produced Using Additive Manufacturing

April 16, 2014
Author(s)
Marcin Bauza, Shawn P. Moylan, Robert Panas, Stephen Burke, Harry Martz, John S. Taylor, Paul Alexander, Richard Knebel
The purpose of this presentation is to focus discussion onto the issue of accuracy and uncertainty of parts made with additive manufacturing processes.

2013 ITRS Metrology Roadmap

April 15, 2014
Author(s)
Alain C. Diebold, Ndubuisi George Orji
In 2013 the ITRS Metrology Technical Working Group worked on updating the text and tables of the metrology chapter. New additions include a section on 3D nanometrology, a revised lithography metrology table, and an updated Interconnect section. The

Deposition Order Dependent Magnetization Reversal of Pressure Graded Co/Pd Films

April 15, 2014
Author(s)
P. K. Greene, Brian Kirby, June W. Lau, Julie Borchers, M .R. Fitzsimmons, Kai Liu
Magnetization reversal mechanisms have been investigated in pressure graded Co/Pd multilayer thin films with inverted deposition orders. Structural and magnetic properties have been investigated using x-ray diffraction, transmission electron microscopy
Displaying 18601 - 18625 of 74047