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Displaying 26 - 50 of 1646

An Octacalcium Phosphate Forming Cement

April 16, 2010
Author(s)
Milenko Markovic, Laurence C. Chow
… materials that contain OCP in its composition. Calcium phosphate cements (CPCs) were prepared using a mixture of α tricalcium phosphate (α TCP) and dicalcium phosphate anhydrous (DCPA), with α TCP/DCPA molar ratio of … Octacalcium Phosphate, Calcium Phosphate Cement, Cement liquids, …

Hydrogen induced amorphization of LaMgNi4 phase in metal hydride alloys

August 3, 2015
Author(s)
Leonid A. Bendersky, Haoting Shen, Kwo Young, Taihei Ouchi
… Hydrogen induced amorphization (HIA) of the LaMgNi4 phase at … is reversible after annealing at 250C for 1 h. The hydrogen storage capacity of the LaMgNi4 phase in an … International Journal of Hydrogen Energy … Hydrogen absorbing alloys, Hydrogen induced amorphization, …

Octacalcium Phosphate Carboxylates

December 1, 2001
Author(s)
Milenko Markovic
… aggregation, and phase transformation of calcium phosphate biominerals principally calcium hydroxyapatite (HA), Ca 10 (PO 4 ) 6 (OH) 2 , octacalcium phosphate (OCP), Ca 8 (HPO 4 ) 2 (PO 4 ) 4 5H 2 O, and dicalcium phosphate dihydrate (DCPD), CaHPO 4 2H 2 O in normal and …

Effects of hydrogen on the evolution of 4130 steel microstructure as a result of tensile loading

July 12, 2024
Author(s)
Zack Buck, May Ling Martin, Damian Lauria, Jason Killgore, Peter Bradley, Yan Chen, Ke An, Matthew Connolly
… that resulted from tensile loading in air and under three hydrogen pressures: 1.8 MPa, 9 MPa, and 18 MPa. … (BCT) phases as a function of applied strain and hydrogen pressure. A modified Williamson-Hall approach was … densities between in-air tests and those performed in hydrogen. However, lattice strain, particularly those …

Morphological and Phase Characterizations of Retrieved Calcium Phosphate Cement Implants

February 1, 2001
Author(s)
Shozo Takagi, Laurence C. Chow, Milenko Markovic, C D. Friedman, P D. Costantino
… A self-hardening calcium phosphate cement (CPC), consisting of equimolar amounts of tetracalcium phosphate and dicalcium phosphate anhydrous, hardens when mixed with water and forms … calcium phosphate biomaterial, calcium phosphate cement implant, carbonated hydroxyapatite, CPC …

Investigation of the fracture resistance of high strength ferritic steel welds in gaseous hydrogen environment

April 22, 2024
Author(s)
Paolo Bortot, Matteo Ortolani, Michele Sileo, Erick Escorza, Matthew Connolly, Zack Buck, Ashwini Chandra
… Hydrogen is expected to play a major role in the … and tempered ferritic steels are widely used for gaseous hydrogen storage despite the fact that hydrogen affects material properties and result in higher … International Journal of Hydrogen Energy … hydrogen gas, quenched and tempered ferritic steel, fracture …

Zn-MOF Assisted Dehydrogenation of Ammonia Borane: Enhanced Kinetics and Clean Hydrogen Generation

February 1, 2012
Author(s)
Gadipelli Srinivas, Jamie Ford, Wei Zhou, Taner Yildirim
… We report controllable and enhanced hydrogen release kinetics at reduced temperatures in ammonia … via solution infiltration. The ABMOF system provides clean hydrogen by suppressing the release of detrimental volatile … These byproducts prevent the direct use of AB as a hydrogen source for polymer electrolyte membrane fuel cell …

Solubility of Calcium Phosphates

February 1, 2001
Author(s)
Laurence C. Chow
… the direction of many reactions that involve calcium phosphates such as dissolution, precipitation, hydrolysis, … better understanding of the solubility behavior of calcium phosphates, rather than provide a survey of the literature, … can dissolve into a unit volume of solution. For calcium phosphates, this quantity often changes by several orders of …

Hydrogen storage in rapidly solidified and crystallized Mg-Ni-(Y,La)-Pd alloys

April 9, 2012
Author(s)
Eric Lass
… and used as precursors for creating nanocrystalline hydrogen storage materials. The resulting materials demonstrate relatively high hydrogen capacity of around 4.5 mass % H and excellent … at 573 K. Additionally, the alloys demonstrate reversible hydrogen storage at 473 K. A composition of Mg85Ni10Y2.5Pd2.5 …

In Situ Neutron Transmission Bragg Edge Measurements of Strain Fields Near Fatigue Cracks Grown in Air and in Hydrogen

August 14, 2017
Author(s)
Matthew Connolly, Peter Bradley, Andrew Slifka, Elizabeth S. Drexler
… field were performed near cracks grown in air and in hydrogen. Through the use of a novel test chamber which is capable of pressurization with hydrogen gas, and amenable to neutron-scattering … and discussed in the context of proposed mechanisms of hydrogen-assisted fatigue crack growth. …

Injectable Calcium Phosphate Cements

October 16, 2008
Author(s)
Laurence C. Chow, Milenko Markovic, Shozo Takagi
… Self-hardening calcium phosphate cements (CPC) have been the subject of considerable … The first published CPCs consisted of tetracalcium phosphate (TTCP) and dicalcium phosphate anhydrous (DCPA) or of TTCP and dicalcium phosphate … Injectable Calcium Phosphate Cements …

Program and Abstracts for the International Conference on Hydrogen Effects on Material Behavior & Corrosion Deformation Interactions

September 12, 2001
Author(s)
N R. Moody, A -. Thompson, Richard E. Ricker, G S. Was, T -. Magnin
… and abstracts book for the International Conference on Hydrogen Effects on Material Behavior and Corrosion … corrosion, deformation, hydrogen, hydrogen embrittlement, stress corrosion cracking … International Conference on Hydrogen Effects on Materials Behavior and Corrosion …

Cell Seeding into Calcium Phosphate Cement

March 1, 2004
Author(s)
Carl Simon Jr., William F. Guthrie, Francis W. Wang
… We have sought to improve calcium phosphate cement by developing a method for seeding bone cells into the cement. Calcium phosphate cement (CPC) is a dry white powder of calcium phosphate salts that when mixed with water will react to form … alginate, bone graft, calcium phosphate cement …

Fundamental Constants and the Hydrogen Atom

January 1, 2001
Author(s)
Peter J. Mohr, Barry N. Taylor
… determined primarily by precise frequency measurements in hydrogen and deuterium. … Fundamental Constants and the Hydrogen Atom … Hydrogen Atom II: Precision Physics of Simple Atomic Systems … Fundamental Constants and the Hydrogen Atom …

Thermochemistry of the Reaction {Phosphoenolpyruvate(aq) + D-Erythrose 4-Phosphate(aq) + H 2 O(1) = 2-Dehydro-3-Deoxy-D-Arabino-Heptonate 7-Phosphate(aq) + Phosphate(aq)}

December 1, 2001
Author(s)
Yadu D. Tewari, N Kishore, R H. Bauerle, W R. LaCourse, Robert N. Goldberg
… reaction {phosphoenolpyruvate(aq) + D-erythrose 4-phosphate(aq) + H 2 O(l) = 2-dehydro-3-deoxy-D-arabino-heptonate 7-phosphate(aq) + phosphate(aq)}, the first step in the metabolic pathway … 7-, apparent equilibrium constant, D-erythrose 4-phosphate, DAHP synthase, enthalpy, entropy, Gibbs free …

IUPAC - NIST Solubility Data Series 68. Ammonium Phosphates

November 14, 2018
Author(s)
J Eysseltova, T P. Dirkse
… of ammonium phosphate is reviewed. Many ammonium phosphates can be described in terms of the ternary system:NH … ammonium compounds, aqueous solutions, phosphates, solubility … IUPAC - NIST Solubility Data Series 68. Ammonium Phosphates …

Preliminary Performance Assessment of Commercially-Available Hydrogen Sensors

November 12, 2007
Author(s)
Nathan D. Marsh, Thomas G. Cleary
… standard test methods for the performance of commercial hydrogen sensors, we employed the Fire Emulator / Detector … of a representative selection of commercially-available hydrogen sensors. These sensors depend on a variety of … They were evaluated both for their response to hydrogen concentrations up to half the lower flammability …

Measurements of effective diffusion coefficients of helium and hydrogen through gypsum

July 3, 2013
Author(s)
Jiann C. Yang, William M. Pitts, Marco G. Fernandez, Kuldeep R. Prasad
… to obtain effective diffusion coefficients of helium and hydrogen (released as forming gas for safety reasons) through … International Journal of Hydrogen Energy … Diffusion coefficient, Gypsum, Helium, Hydrogen … of effective diffusion coefficients of helium and hydrogen through gypsum …

Properties of Calcium Phosphate Carbonate Cements

October 16, 2008
Author(s)
Milenko Markovic, Shozo Takagi, Laurence C. Chow
… physicochemical and mechanical properties of two calcium phosphate carbonate cements (CPCC-1 and CPCC-2) formed in solution reaction of (1) [alpha]-tricalcium phosphate ([alpha]-TCP),[alpha]-Ca 3 (PO 4) d2^, with calcium carbonate, CaCO 3 , and (2) dicalcium phosphate unhydrous (DCPA), CaHPO 4 , with CaCO 3 , were …

Formation of Macropores in Calcium Phosphate Cement Implants

February 1, 2001
Author(s)
Shozo Takagi, Laurence C. Chow
… A calcium phosphate cement (CPC) was shown to harden at ambient … of CPC powder (an equimolar mixture of tetracalcium phosphate, Ca 4 (PO 4 ) 2 O, and dicalcium phosphate anhydrous, CaHPO 4 ) and one of the above additive … anhydrous, biomaterials, calcium phosphate cement, dicalcium phosphate anhydrous, …

High Resolution Inter- and Intramolecular Spectroscopy of Hydrogen Bonded Clusters: Benchmark Tests of Theory

January 1, 2000
Author(s)
David J. Nesbitt, S Davis, D T. Anderson
… tool for sub-Doppler near-IR spectroscopic study of hydrogen-bonded clusters under jet cooled conditions. The … associated with large amplitude vibrational motion of the hydrogen bond. In this paper, we describe efforts to map out … of all vibrational degrees of freedom for any hydrogen-bonded system. These data on HF-HF and DF-DF are …
Displaying 26 - 50 of 1646
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