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Displaying 76 - 100 of 1646

Current Status of Thermodynamic Properties of Hydrogen

August 17, 2007
Author(s)
Bryce Jacobson, Jacob W. Leachman, Steven Penoncello, Eric Lemmon
… a survey of the thermodynamic properties of normal hydrogen and parahydrogen with comparisons of properties … accepted standards for the thermodynamic properties of hydrogen were based on experimental and correlation work … the completion of the current standards for both normal hydrogen and parahydrogen are included in the comparisons. …

A Dual Constant-Composition Titration System as In Vitro Resorption Model for Comparing Dissolution Rates of Calcium Phosphate Biomaterials

May 1, 2003
Author(s)
Laurence C. Chow, Milenko Markovic, Shozo Takagi
… postulated that the in vivo resorption rates of calcium-phosphate bone-graft materials are closely related to their … in vitro model to produce dissolution-rate data of calcium phosphate materials as a starting point for predicting in … model to compare dissolution rates of different calcium- phosphate materials. NIST standard reference hydroxyapatite …

Reduction in dentin permeability using mildly supersaturated calcium phosphate solutions

February 1, 2004
Author(s)
Ai-Shuan(Maria) Cherng, Laurence C. Chow, Shozo Takagi
… multiple treatments with a mildly supersaturated calcium phosphate solution on the hydraulic conductance (Lp) of … solution contained 6.5 mmol/L (mM) each of calcium and phosphate, 0.25 mM fluoride, 30 mM KCl, and 50 mM HEPES … Calcium phosphate, dentin permeability, multiple treatments, smear …

Physical Properties of Composite Bone Grafts Consisting of Calcium Phosphate Cement and Chondroitin Sulfate (Poster)

April 1, 2005
Author(s)
Francis W. Wang, S Hirayama, James H. Yen, Shozo Takagi
… Calcium phosphate cement (CPC), consisting of tetracalcium phosphate (TTCP) and dicalcium phosphate anhydrous (DCPA), sets by reacting with water to … bone grafts, calcium phosphate cement, chondroitin sulfate, composites, … Properties of Composite Bone Grafts Consisting of Calcium Phosphate Cement and Chondroitin Sulfate (Poster) …

In Vitro Cytotoxicity of Amorphous Calcium Phosphate Composites

May 1, 2005
Author(s)
Carl Simon Jr., Joseph M. Antonucci, D W. Liu, Drago Skrtic
… Calcium phosphate-based biomaterials are being widely used as bone … anti-demineralizing/remineralizing amorphous calcium phosphate (ACP)-based polymeric composites show promise in a … amporphous calcium phosphate, cellular response, composites, cytotoxicity, … In Vitro Cytotoxicity of Amorphous Calcium Phosphate Composites …

Histopathologic Reaction of a Calcium Phosphate Cement for Alveolar Ridge Augmentation

July 1, 2002
Author(s)
A Sugawara, K Fujikawa, S K. Kusama, M Nishiyama, S Murai, Shozo Takagi, Laurence Chow
… study was to evaluate the feasibility of using a calcium phosphate cement (CPC) in the reconstruction of a defective … The CPC consisted of an equimolar amount of tetracalcium phosphate and dicalcium phosphate anhydrous. At the beginning of the experiment, all …

Injectable Calcium Phosphate Cement: Effects of Powder-to-Liquid Ratio and Needle Size

July 16, 2007
Author(s)
Elena F. Burguera, Hockin D. Xu, Limin Sun
… Calcium phosphate cement (CPC) sets in-situ with intimate contact … study were: to formulate an injectable tetracalcium phosphate (TTCP)-dicalcium phosphate (DCPD) cement (referred to as CPCD); and to … bone repari, calcium phosphate cement, injectability, nano apatite strength, …

Calcium Phosphate Cement With Non-Rigidity and Strength Durability for Periodontal Bone Repair

August 1, 2006
Author(s)
Hockin D. Xu, Shozo Takagi, Limin Sun, L A. Hussain, Laurence C. Chow, William F. Guthrie, James H. Yen
… resorbable, and mech/anically strong calcium phosphate cement (CPC) in a non-rigid form that can provide … motion in periodontal bone repair. Methods. Tetracalcium phosphate, dicalcium phosphate anhydrous, and biopolymer chitosan were used to … calcium phosphate cement, nano hydroxyapatite, non-rigid, periodontal …

Frequently Asked Questions About Commercial Hydrogen Vehicle Refueling

December 28, 2018
Author(s)
Juana S. Williams
… "Commonly asked questions about hydrogen fuel cell electric vehicles (HFCEV) and hydrogen fuel availability, technology, safety; and the legal metrology requirements and terminology applicable to hydrogen fuel quality, measuring equipment, method of sale, …

The Clinical Effect of Amorphous Calcium Phosphate (ACP) on Root Surface Hypersensitivity

September 1, 2003
Author(s)
S B. Geiger, S Matalon, Joe Blasic, Ming L. Tang, F Eichmiller
… of dentin tubules. A method of rapidly forming calcium phosphate compounds within tubules can mimic sclerosis and … in situ by the sequential application of calcium and phosphate solutions. In this clinical study, thirty patients … air stimulus, amorphous calcium phosphate, dentin sensitivity, obturation of dentin tubules, …

Concentration of Hydrogen in Titanium Measured by Neutron Incoherent Scattering

May 1, 1998
Author(s)
Huaiyu H. Chen-Mayer, David F. Mildner, George P. Lamaze, Richard M. Lindstrom, Rick L. Paul, V. V. Kvardakov, W. J. Richards
… Symposium H: Hydrogen in Semiconductors and Metals … Proceedings in Materials Research Society Symposium: Hydrogen in Semiconductors and Metals … Concentration of Hydrogen in Titanium Measured by Neutron Incoherent Scattering …

ADVANCED NON-DESTRUCTIVE HYDROGEN SENSORS TO PREVENT MATERIAL DEGRADATION FROM HYDROGEN DAMAGE

January 5, 2009
Author(s)
Angelique N. Lasseigne, Kamalu Koenig, David Olson, Brajendra Mishra, Joshua Jackson, Thomas A. Siewert, Joseph D. McColskey
… steels (X100 and X120) exhibit lower tolerance for hydrogen (diffusible and formed hydrides) before significant … It is essential to have advanced sensors to monitor the hydrogen content and accumulation in the pipeline steel and … measurements have been utilized for in-situ monitoring of hydrogen content in pipelines. Low frequency induced current …

Histopathological Reactions of Calcium Phosphate Cement for Alveolar Ridge Augmentation Containing Hydroxyapatite-Coated Implants in Dog Mandibles

October 12, 2021
Author(s)
A Sugawara, K Fujikawa, S K. Kusama, Shozo Takagi, Laurence Chow
… Previous studies have shown that a calcium phosphate cement (CPC), consisting of tetracalcium phosphate and dicalcium phosphate anhydrous, was highly biocompatible and more … alveolar bone, calcium phosphate, cement, histopathology, implant, osteointegration … Histopathological Reactions of Calcium Phosphate Cement for Alveolar Ridge Augmentation Containing …

Effects of Addition of Mannitol Crystals on the Porosity and Dissolution Rates of a Calcium Phosphate Cement

August 1, 2010
Author(s)
Debra Vazquez, Shozo Takagi, Stanislav Frukhtbeyn, Laurence Chow
… The bone defect repair functions of calcium phosphate cement (CPC) are related to its osteoconductivity … prepared by combining an equimolar mixture of tetracalcium phosphate and anhydrous dicalcium phosphate with (0, 10, or 50) mass% of mannitol. … Calcium Phosphate Cement, dissolution rate, porosity, mannitol …

Switching-off Hydrogen Peroxide Hydrogenation in the Direct Synthesis Process

February 20, 2009
Author(s)
Andrew A. Herzing, Jennifer Edwards, Benjamin Solsona, Edwin Ntainjua, Albert F. Carley, Graham J. Hutchings, Christopher J. Kiely
… Hydrogen peroxide is an important disinfectant and bleach and … manufactured from an indirect process involving sequential hydrogenation/oxidation of anthraquinones. However, a direct process in which hydrogen and oxygen are reacted would be preferable. … "hydrogen peroxide synthesis", "spherical …

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 …

Adsorption From Solutions on Synthetic Hydroxyapatite: Nonaqueous Versus Aqueous Solvents

July 1, 1999
Author(s)
D N. Misra
… on hydroxapatite is mainly regulated by the interplay of hydrogen bonding between adsorbate, adsorbent, and solvent. … surface complex or by chemically reacting with calcium or phosphate ions to form a new phase that precipitates out of solution. Therefore, the concentration of calcium and phosphate ions in solution should also be monitored to …

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, …
Displaying 76 - 100 of 1646
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