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Displaying 101 - 125 of 1646

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, …

Crystal Structures of Calcium Orthophosphates

December 1, 2001
Author(s)
M Mathew, Shozo Takagi
… related to apatite-type structures, such as octacalcium phosphate (OCP), Ca 8 (HPO 4 ) 2 (PO 4 ) 4 5H 2 O and tetracalcium phosphate (TTCP), Ca 4 (PO 4 ) 2 O;(2) the glaserite type, … 4 sheet-containing compounds, which include dicalcium phosphate dihydrate (DCPD), CaHPO 4 2H 2 O, dicalcium …

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 …

Structural and Dynamical Studies of Acid Mediated Conversion in Amorphous-Calcium-Phosphate Based Dental Composites

October 31, 2014
Author(s)
Fan Zhang, Andrew Allen, Lyle E. Levine, Mark D. Vaudin, Drago Skrtic, Joseph M. Antonucci, Kathleen Hoffman, Anthony A. Giuseppetti, Jan Ilavsky
… Amorphous calcium phosphate (ACP) based composites are promising restorative … attributable to ACP's capacity to release calcium and phosphate ions through a complex reaction in which ACP is … apatitic form hydroxyapatite. The released calcium and phosphate ions have been shown to repair tooth damage by …

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 …

Properties of Calcium Phosphate Cement with Chondroitin Sulfate

October 12, 2021
Author(s)
S Hirayama, Francis W. Wang, Shozo Takagi, T Ikemi
… (HA) conversion of polymer-modified self-hardening calcium phosphate cements (CPCs) that were prepared with chondroitin … calcium phosphate cement, Condroitin sulfate, glycosaminoglycan, … Properties of Calcium Phosphate Cement with Chondroitin Sulfate …

Yb/Er-Codoped and Yb-Doped Waveguide Lasers in Phosphate Glass

March 1, 2000
Author(s)
D. L. Veasey, David S. Funk, P. M. Peters, Norman Sanford, Gregory E. Obarski, N. H. Fontaine, M. Young, A P. Peskin, W. Liu, S. N. Houde-Walter, Joseph S. Hayden
… the development of waveguide lasers using rare-earth-doped phosphate glasses. An improvement has been achieved over … of ion exchange in a commercially available Yb/Er-codoped phosphate glass composition. We have demonstrated slope … distributed-Bragg-reflector, Erbium, phosphate glass, single-frequency, tunable laser, waveguide …

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 …

An In Vitro Model for Studying Bioresorption Rate of Calcium Phosphate Bone Graft Materials

October 16, 2008
Author(s)
Laurence C. Chow, Shozo Takagi, Milenko Markovic
… postulated that the in vivo resorption rates of calcium phosphate bone graft materials are closely related to their … the factors that control resorption rates of other calcium phosphate biomaterials and coating. … bioresorption, bone graft materials, calcium phosphate cement, dissolution, macroporosity, microporosity …

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 …

Amorphous Calcium Phosphate/Urethane Methacrylate Resin Composites. I. Physicochemical Characterization

May 7, 2007
Author(s)
William Regnault, Tonya Icenogle, Joseph M. Antonucci, Drago Skrtic
… based on these three resins with amorphous calcium phosphate (ACP) as the filler phase were polymerized and … as a result of unfavorable changes in the internal calcium/phosphate ion stoichiometry, the ion release rate greatly … amorphous calcium phosphate, composite/hard tissue, ion release, mechanical …

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 …

In Vitro and in Vivo Characteristics of Fluorapatite-forming Calcium Phosphate Cements

August 1, 2010
Author(s)
Shozo Takagi, Stanislav A. Frukhtbeyn, Laurence C. Chow, Akiyoshi Sugawara, Kenji Fujikawa, Kidehiro Ogata, Makoto Hayashi, Bunnai Ogiso
… in vivo properties of fluorapatite (FA)-forming calcium phosphate cements (CPCs). The experimental cements contained … fluorapatite-forming calcium phosphate cement, high crystallinity, biocompatible, animal … in Vivo Characteristics of Fluorapatite-forming Calcium Phosphate Cements …

Reinforcement of a Self-Setting Calcium Phosphate Cement with Different Fibers

October 1, 2000
Author(s)
Hockin D. Xu, F Eichmiller, Anthony A. Giuseppetti
… A water-based calcium phosphate cement (CPC) has been used in a number of medical … to fiber strength. In conclusion, a self-setting calcium phosphate cement was substantially strengthened via fiber … calcium phosphate cement, fiber reinforcement, fiber strength, …

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 …

Fire Safety Risks Associated with Leaks in Hydrogen Systems.

December 3, 2009
Author(s)
Jintao Zhang
… Hydrogen presents several unusual fire hazards, including … and computations to identify the hazards of leaks in hydrogen systems that could result in combustion. The work seeks to identify the types of hydrogen leaks that can support flames. A small leak in a …

Combinatorial Screening of Osteoblast Response to 3D Calcium Phosphate/Poly(e-caprolactone) Scaffolds Using Gradients and Arrays

December 31, 2010
Author(s)
Carl G. Simon Jr., Kaushik Chatterjee, Laurence C. Chow, Limin Sun, Marian F. Young
… and used to screen the effect of a new amorphous calcium phosphate nanoparticle preparation (CaP) on osteoblast … The CaP-containing scaffolds released calcium and phosphate ions which are known to activate osteoblast … engineering, biomaterials, cell proliferation, calcium phosphate …

Fatigue Crack Growth Modeling of Pipeline Steels in High Pressure Gaseous Hydrogen

October 21, 2013
Author(s)
Robert L. Amaro, Elizabeth S. Drexler, Andrew J. Slifka
… Hydrogen will likely play a key role in a future clean energy … fundamental understanding of the deleterious effects of hydrogen on the fatigue and fracture properties of pipeline … and lifetime prediction of pipeline steels in gaseous hydrogen are yet to be developed and implemented into …
Displaying 101 - 125 of 1646
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