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Displaying 1 - 25 of 4257

The Relationship Between Microstructure and Mechanical Properties of Late 19th/Early 20th Century Wrought Iron Using the Generalized Method of Cells Model

March 1, 2002
Author(s)
J J. Hooper, L Graham, Timothy J. Foecke, Timothy P. Weihs
… for the application. However, the quality of the wrought iron rivets may have been an important factor in the opening … during flooding. Preliminary studies of Titanic wrought iron rivets revealed an orthotropic, inhomogeneous composite material composed of glassy iron silicate (slag) particles embedded in a ferrite matrix. …

Ferrous Ions as Catalysts for Photochemical Reduction of CO 2 in Homogeneous Solutions

May 1, 2000
Author(s)
J Grodkowski, Pedatsur Neta
… Ferrous ions are found to act as efficient catalysts for the … to form the radical anion, TP. - , which reduces Fe(II) ions. The rate constant for this reaction was determined by … and found to be 1.2 x 10 8 L mol -1 s -1 . The Fe(I) ions produced are expected to react with CO 2 to form an …

Improved Cr II log(gf) values and abundance determinations in the photospheres of the Sun and metal-poor star HD 84937

January 20, 2017
Author(s)
James E. Lawler, Chris Sneden, Gillian Nave, E. A. Den Hartog, N Emrahoglu, John J. Cowan
… for 183 lines of the second spectrum of chromium (Cr II) and new radiative lifetime measurements from laser … still modern, transition probability measurements in Cr II and reconcile Solar and stellar Cr abundance values based on Cr I and Cr II lines. A total of 18 spectra from three Fourier Transform …

The Potential of Highly Charged Ions: Possible Future Applications

September 1, 2007
Author(s)
John D. Gillaspy, Joshua M. Pomeroy, A C. Perrella, Holger Grube
… International Conference on the Physics of Highly Charged Ions. It briefly updates and extends an earlier review given … International Conference on the Physics Highly Charged Ions Proceedings … electron beam ion trap, euv lithography, highly charged ions, magnetic tunnel junctions, nanocrystals …

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, …

Application of a Gas-Liquid Entraining Rotor to Supercritical Fluid Extraction: Removal of Iron (III) From Water

May 1, 2003
Author(s)
W C. Andersen, Thomas J. Bruno
… improve the supercritical fluid extraction efficiency of iron removal from water. Metal beta-diketonate complexes with … C02 phase and the metal ion-rich aqueous phase. Iron (111) was extracted from water with the chelating agent … C and 20.8 MPa. With entrainment, 78.6 percent of the iron was removecfrom the aqueous phase. This represents a …

PROMOTION OR INHIBITION OF HYDROGEN-AIR IGNITION BY IRON-CONTAINING COMPOUNDS

July 1, 2008
Author(s)
Gregory T. Linteris
… mixtures near 1000 K was studied, for varying amounts of iron additives. Depending on the initial conditions, the addition of iron pentacarbonyl promotes or inhibits the ignition of hydrogen/air mixtures. The simulations show that iron compounds at 1 υL/L reduce the ignition delay by about …

Negative Ion-Neutral Reactions in Townsend Discharges

July 1, 1999
Author(s)
James K. Olthoff, MVVS. Rao
… Relative intensities and translational ion-flux energy distributions are presented for negative ions … 2 kTd). These results are discussed in light of relevant ion-molecule reactions where available. … CF 4 , ion molecule reactions, negative ions, O 2 , SF 6 , Townsend …

Effects of Silica, Fe(II), and Mn(II) on Electrochemical Lithium Intercalation: Implication for Lithium Extraction from Geothermal Brines

September 11, 2025
Author(s)
Yongchang Yu, Christopher Stafford, Lingchen Kong, Keven Mckenzie Jr, Michael Wagner, Xitong Liu
… concentrations of co-existing constituents, including Fe(II), Mn(II), and silica, which can form scaling layers on the … extraction. This study investigates the influence of Fe(II), Mn(II), and silica on Li+ extraction by LFP and the … Effects of Silica, Fe(II), and Mn(II) on Electrochemical Lithium Intercalation: …

Mechanical Properties of Hot Isostatically Pressed Nanograin Iron and Iron Alloy Powders

January 1, 2001
Author(s)
A Munitz, Richard J. Fields
… isostatic pressing (hipping) was performed on a variety of iron and iron alloy powders produced by attrition ball milling. … density depends on the initial powder composition. While iron powder processed in argon (Fe[Ar]) reached a maximum … consolidation, hot isostatics, iron alloys, mechanical properties, nanoscale, powder, …

Reversible Room-Temperature Fluoride-Ion Insertion in a Tunnel-Structured Transition Metal Oxide Host

July 6, 2020
Author(s)
Cherno Jaye, Wasif Zaheer, Justin L. Andrews, Forrest P. Hyler, Conan Weiland, David A. Shapiro, Jinghua Guo, Jesus M. Velazquez, Sarbajit Banerjee, Abhishek Parija, Daniel Fischer
… An energy storage paradigm orthogonal to conventional Li-ion battery chemistries can be conceptualized by employing anions as the primary charge carriers. F-ion conversion chemistries show promise but have limited … must further operate at elevated temperatures to achieve F-ion diffusion. In contrast, the exploration of intercalation …

ATMP-Stabilized Iron Nanoparticles: Chelator-Controlled Nanoparticle Synthesis

November 1, 2014
Author(s)
Lauren F. Greenlee, Nikki S. Rentz, Roy H. Geiss
… Iron nanoparticles are of interest in fields such as water … properties and low cost. When combined with other metals, iron-metal nanoparticles can act as catalysts for a diverse … stabilizers, and in this study, we characterize iron nanoparticles synthesized in water in the presence of a …

Dose Calibration of Ion Implanters for Semiconductor Production

February 1, 1998
Author(s)
F A. Stevie, David S. Simons, J M. McKinley, J McMacken, R Santiesteban, P Flatch, J Becerro
… a relative uncertainty of less of 5%. The does of boron ion implants were measured by secondary ion mass spectrometry at two different laboratories using … Secondary Ion Mass Spectrometry SIMS XI … boron, ion implantation, silicon, SIMS … Dose Calibration of Ion Implanters for Semiconductor Production …

Tests of Theory in Rydberg States of One-electron Ions

July 1, 2014
Author(s)
Joseph N. Tan, Peter J. Mohr
… electrodynamics (QED) for Rydberg states of one-electron ions can test theory and allow new determinations of … of Standards and Technology (NIST), highly-charged ions (including bare nuclei)created in an Electron Beam Ion … trap. An ongoing experiment aims to produce one-electron ions isolated in an ion trap designed for laser spectroscopy. …

Metallurgical Analysis of Wrought Iron From the RMS Titanic

April 1, 2003
Author(s)
J J. Hooper, Timothy J. Foecke, L Graham, Timothy P. Weihs
… Instead, it was suggested that the quality of the wrought iron rivets may have been an important factor in the opening … during flooding. Here the quality of RMS Titanic wrought iron is examined and compared to contemporary wrought iron obtained from additional late 19th/early 20th century …

Reduction of Cobalt and Iron Corroles and Catalyzed Reduction of CO 2

May 1, 2002
Author(s)
J Grodkowski, Pedatsur Neta, E Fujita, A Mahammed, L Simkhovich, Z Gross
… The role of cobalt and iron corroles in catalytic CO 2 reduction has been studied. … finding that the M I oxidation states of the cobalt and iron corroles can react with CO 2 is in contrast with the … CO 2 reduction, cobalt, corroles, electrochemistry, iron, photochemistry …

Infrared Spectra of Small Molecular Ions Trapped in Solid Neon

October 3, 2010
Author(s)
Marilyn E. Jacox
… Experiments in this laboratory trap molecular ions in dilute solid solution in neon at 4.2 K in sufficient … charge neutrality of the deposit. Recent observations of ions produced from C2H4 and BF3 will be discussed. Because of … Spectroscopy of Molecular Ions in the Laboratory and in Space …

Highly Charged Ion Studies at the NIST EBIT

January 1, 2001
Author(s)
L P. Ratliff, J R. Roberts
… Highly Charged Ion Studies at the NIST EBIT … atoms, EBIT, electron beam ion trap, highly charged ions, ions … Highly Charged Ion Studies at the NIST EBIT …

Trapping Highly Charged Ions: Fundamentals and Applications

April 1, 2000
Author(s)
John D. Gillaspy
… Fundamentals and applications for trapping highly charged ions. … Trapping Highly Charged Ions: Fundamentals and Applications … Trapping Highly Charged Ions: Fundamentals and Applications …

Relativistic Atomic Structure Theory for Highly-Charged Ions

February 19, 2017
Author(s)
Yong Sik Kim
… summarized with emphasis on applications to highly-charged ions. … Trapping Highly-Charged Ions: Fundamentals and Applications … atomic structure theory, highly-charged ions, relativity … Relativistic Atomic Structure Theory for Highly-Charged Ions …

The Metallurgical Analysis of Wrought Iron from the RMS Titanic

September 1, 2003
Author(s)
J J. Hooper, Timothy J. Foecke, L Graham, Timothy P. Weihs
… the variation in the mechanical properties of wrought iron as a function of its microstructure. Thousands of … order to predict the local mechanical behavior of wrought iron as a function of microstructure. … Generalized Method of Cells, image analysis, wrought iron …

Microstructural Evolution of Pd-doped Nanoscale Zero-valent Iron (nZVI) Particles in Aqueous Media and Implications for Particle Reactivity

May 6, 2010
Author(s)
Andrew A. Herzing, Weile Yan, Christopher J. Kiely, Wei-xian Zhang
… Palladized zero-valent iron nanoparticles have been frequently employed to achieve … In this work, structural evolution of palladized nanoscale iron particles (Pd-nZVI, with Pd at 1.5 wt%) was examined … adopt a core-shell structure consisting of a metallic iron core and a thin amorphous oxide shell, and that Pd is …

Magnetic order of the iron spins in NdFeAsO

August 21, 2008
Author(s)
Ying Chen, Jeffrey Lynn, Jiying Li, G. J. Li, G. F. Chen, J. L. Luo, N. L. Wang, Pengcheng Dai, Clarnia dela Cruz, H. A. Mook
… measurements have been carried out to investigate the iron magnetic order in undoped NdOFeAs. Antiferromagnetic … in-plane spin arrangement as observed in all the other iron oxypnictide materials. Nearest-neighbor spins along the … diffraction, magnetic order, magnetic phase transition, iron-based superconductor, itinerant electron magnet …

Electronic Structure and Chemistry of Iron-Based Metal Oxide Nanostructured Materials: A NEXAFS Investigation of BiFeO3, Bi2Fe4O9, a-Fe2O3, g-Fe2O3, and Fe/Fe3O4

November 6, 2008
Author(s)
Tae-Jin Park, S Sambasivan, Daniel A. Fischer, R Ramesh, J A. Misewich, S S. Wong
… investigation of the electronic structure and chemistry of iron-based metal oxide nanostructured (FeMONS) materials … iron oxides, nanostructured materials, NEXAFS … Electronic Structure and Chemistry of Iron-Based Metal Oxide Nanostructured Materials: A NEXAFS …

Development of stabilized zero valent iron nanoparticles

January 31, 2012
Author(s)
Lauren F. Greenlee, Stephanie A. Hooker
… on the development and characterization of zero valent iron (ZVI) nanoparticles to improve nanoparticle design and … The focus of this study was to evaluate two different iron salts as starting materials and evaluate three different … Nanoparticle, zero valent iron, disinfection by-products, stabilizer, carboxymethyl …
Displaying 1 - 25 of 4257
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