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Displaying 76 - 100 of 3839

Radiation From k-Shell Filling in Highly Charged Ions: A Driver for Resonant Combination Cancer Therapy?

October 12, 2021
Author(s)
A P. Kavanagh, John D. Gillaspy, D G. Hirst, M H. Mendenhall, N Nakamura, S Ohtani, H Wantanabe, F J. Currell
… using radiation from bare and hydrogen-like highly-charged ions as a driver for a proposed form of cancer therapy is … cancer, high charged ions, radiation therapy, radiotherapy … Radiation From k-Shell Filling in Highly Charged Ions: A Driver for Resonant Combination Cancer Therapy? …

Post-Source Decay of Polystyrene Ions in Matrix-Assisted LaserDesorption/Ionization

January 1, 1999
Author(s)
R J. Goldschmidt, S Wetzel, William R. Blair, Charles M. Guttman
… Analyte ions produced in matrix-assisted laser desorption/ionization … little or no prompt fragmentation ofinitially formed ions. In many cases only intact molecular ions are observed in MALDI mass spectra. This is generally … Post-Source Decay of Polystyrene Ions in Matrix-Assisted LaserDesorption/Ionization …

The Mobilities of Ions and Cluster Ions Drifting in Polar Gas

April 1, 1997
Author(s)
J A. de Gouw, M Krishnamurthy, S R. Leone
… The mobility of ions drifting in polar gases is explored both theoretically … New expermental results are presented for (1) NO+ ions drifting in H 2 O (the resuced zero-field mobility K 0 … is 0.66+or-}0.07 cm 2 V -1 s -1 ), (2) H 3 O+(H6d2^O) 3 ions drifting in H 2 O (K 0 (0) =0.43+or-}0.06cm 2 V -1 s -1 …

Raman spectroscopic observation of dehydrogenation in ball-milled LiNH2-LiBH4-MgH2 nanoparticles

April 3, 2010
Author(s)
Jason Hattrick-Simpers, Chun Chiu, James E. Maslar, Leonid A. Bendersky, Michael E. Niemann, Sesha S. Srinivasan, Elias K. Stefanakos
… 415 K, while Li4BN3H10 persisted and continued to release hydrogen up to 453 K. Subsequent hydrogen release is realized by the direct conversion of … International Journal of Hydrogen Energy … hydrogen storage, raman spectroscopy, thermodynamic …

Hydrogen Species Motion in Piezoelectrics: A Quasi-Elastic Neutron Scattering Study

March 5, 2012
Author(s)
K. J. Alvine, Madhu Sudan Tyagi, Craig Brown, Terrence J. Udovic, T. Jenkins, S. G. Pitman
… Hydrogen is known to damage or degrade piezoelectric … access memory applications, and at high pressure for hydrogen powered vehicle applications. The piezoelectric … degradation is in part governed by the motion of hydrogen species within the piezoelectric materials. We …

Enumeration of the Hydrogen-Enhanced Localized Plasticity Mechanism for Hydrogen Embrittlement in Structural Materials

February 15, 2019
Author(s)
May L. Martin, Mohsen Dadfarnia, Akihide Nagao, Shuai Wang, Petros Sofornis
… and simulation results enumerating the development of the hydrogen-enhanced localized plasticity (HELP) mechanism as a viable hydrogen embrittlement mechanism for structural materials. A … as are a variety of mechanical loading conditions and hydrogen charging conditions, supporting the concept that, …

DETAILED SUMMARY OF CHARACTERISTICS AND ATTRIBUTES OF API STEEL INTENDED FOR GASEOUS HYDROGEN PIPELINE SERVICE

September 15, 2022
Author(s)
Andrew Slifka, Douglas Stalheim, Chris San Marchi, Joseph Ronevich, Jim Campbell
… for controlling greenhouse gases has brought the use of hydrogen as an energy source in industry and transportation … Part of the infrastructure development for the use of hydrogen is to use pipelines for transportation and … the addition of new pipelines to support the volume of hydrogen required. The pipelines may transport pure gaseous …

Evaluating a Natural Gas Pipeline Steel for Blended Hydrogen Service

March 19, 2022
Author(s)
May Ling Martin, Matthew Connolly, Zack Buck, Peter Bradley, Damian Lauria, Andrew Slifka
… steel that is being considered for blended natural gas/hydrogen gas service was evaluated in a high-pressure hydrogen gas environment. Fracture toughness testing and … and fatigue behavior were within acceptable bounds for hydrogen service. … Hydrogen blending, hydrogen embrittlement, pipeline steel, …

On the Development of a Hydrogen-Assisted Fatigue Crack Growth Model for API Pipeline Steels

April 5, 2018
Author(s)
Andrew J. Slifka, Ryan M. White, Chris P. Looney, Elizabeth S. Drexler, Robert L. Amaro
… Hydrogen has been proposed as a potential partial solution to … economy. In order to make this a reality, large-scale hydrogen transportation networks need to be engineered and … pipelines are the most likely candidate for the required hydrogen transportation network. One historical barrier to …

Hydrogen Isotope Effect in Embrittlement and Fatigue Crack Growth of Steel

March 7, 2019
Author(s)
Matthew J. Connolly, Andrew J. Slifka, Robert L. Amaro, Elizabeth S. Drexler, May L. Martin
… The corrosive effect of hydrogen on steel is a long-standing problem. Corrosion in the presence of hydrogen is, in part, a consequence of the fast diffusion of hydrogen in ferritic steels. Because of the identical … Fatigue, Deuterium, Hydrogen environment assisted cracking …

DEVELOPMENT OF ELECTROMAGNETIC TECHNIQUES FOR HYDROGEN CONTENT ASSESSMENT IN COATED LINEPIPE STEEL

February 28, 2008
Author(s)
Angelique N. Lasseigne, Jennifer Anton, Thomas Jackson, David Olson, Brajendra Mishra
… at higher pressure, the need for characterization of hydrogen content in high strength steel pipelines is timely … steel pipelines have higher susceptibility to hydrogen damage. Through the use of low-frequency induced … been developed for real-time determination of diffusible hydrogen content in coated pipeline steel. A measurement …

Inkjet Metrology and Standards for Ion Mobility Spectrometry

September 1, 2007
Author(s)
R M. Verkouteren, J Brazin, Eric S. Windsor, Robert A. Fletcher, R Maditz, Wayne Smith, John G. Gillen
… BHT-PLGA microspheres show peaks in positive and negative ion modes, which demonstrate usefulness for testing portals … International Journal of Ion Mobility Spectrometry … calibration, explosives, homeland security, inkjet, ion mobility spectrometry, piezoelectric, portals, standards, …

Ignition Propensity of Hydrogen in the Presence of Metal Surfaces.

November 22, 2011
Author(s)
Chih-Jen Sung, James S. T'ien, Kyle Brady
… Hydrogen as an energy carrier has received much attention in … the continued use of fossil fuels. The benefits of using hydrogen fuel over fossil fuel products are numerous and well … fuels may contribute to world-wide climate change. Hydrogen, depending upon its source, can reduce or eliminate …

Water Dissociation in the Presence of Metal Ions

October 16, 2008
Author(s)
Orkid Coskuner, Emily Jarvis, Thomas C. Allison
… Hydrated metal ions are important in a variety of biological and … of the dynamic local environment associated with these ions remains elusive. We report ab initio molecular dynamics … molecular dynamics, Eigen mechanism, Grotthuss, metal ions, transition path sampling, water dissociation, Zundel …

Masked Ion Beam Lithography with Highly Charged Ions

September 1, 1998
Author(s)
John D. Gillaspy, D Parks, L P. Ratliff
… Masked ion beam lithography using highly charged ions is demonstrated for the first time by producing an array … exposure of the resist is incomplete and isolated single-ion impact sites can be seen within the exposed areas. Atomic … AFM, atomic force microscopy, highly charged ion, ion beam, ion tracks, lithography, PMMA …

Effect of strain rate on tensile test results in hydrogen and other concerns

July 29, 2025
Author(s)
May Martin, Zachary Buck, Allen Eckhardt, Damian Lauria, Andrew Slifka, Matthew Connolly
… of an X52 pipeline steel were conducted in air and in hydrogen gas over a range of five orders of magnitude of … strength and ultimate tensile strength were unaffected by hydrogen or by strain rate, while ductility was greatly reduced in hydrogen, compared to in-air, with a moderate effect of …

Research at NIST-Boulder on the Compatibility of Hydrogen and Carbon Steels

February 18, 2009
Author(s)
Nicholas Nanninga
… The demand for gaseous hydrogen fuel is expected to necessitate a consistent supply of hydrogen that can only be delivered through networks of … and new pipelines and storage units. The focus of the Hydrogen Project at the National Institute of Standards and … gaseous hydrogen, pipeline, materials, pressure vessels …

Hydration for a Series of Hydrocarbons

July 1, 1998
Author(s)
Raymond D. Mountain, D Thirumalai
… relatively short implying that there is a free exchange of hydrogen bonds between the interface region and the bulk. … is not significantly perturbed, even for octane. The hydrogen bond network is essentially preserved. The solutes … demonstrated earlier but also due to the plasticity of the hydrogen bond network. Even for octane we find very little …

Use of a spectrally-tunable source to explore improvement in chromatic contrast for illumination of tissues

February 11, 2010
Author(s)
Maritoni A. Litorja, Ben Ecker
… control of the illuminant spectral distribution to improve chromatic contrast without the use of dyes. The computational … in converting spectral data to RGB and use of the CIELAB chromatic and luminance contrast metric as criteria in … of a spectrally-tunable source to explore improvement in chromatic contrast for illumination of tissues …

A review of fatigue crack growth for pipeline steels exposed to hydrogen

November 30, 2010
Author(s)
Nicholas Nanninga, Andrew J. Slifka, Yaakov Levy, Calvin L. White
… Hydrogen pipeline systems offer an economical means of storing and transporting energy in the form of hydrogen gas. Pipelines can be used to transport hydrogen that has been generated at solar and wind farms to … steel, pipelines, hydrogen, fatigue crack growth, review …

Hydrogen-Steel Compatibility Research at NIST-Boulder

March 30, 2009
Author(s)
Thomas A. Siewert
… Division is outfitting a high pressure (100 MPa) hydrogen testing facility to collect mechanical and … on nondestructive sensors that can measure the content of hydrogen in steels. These data are becoming extremely important as the economics of hydrogen transport drive the consideration of a range of …
Displaying 76 - 100 of 3839
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