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Displaying 451 - 473 of 473

A simple and sensitive HPLC-ICP-MS method for the accurate determination of Vitamin B12 in Fortified Breakfast Cereals and Multivitamin Tablet Reference Materials

April 10, 2013
Author(s)
Siva K. Chinthalapati, Lee L. Yu, John E. Schiel, Stephen E. Long
A sensitive high performance liquid chromatography (HPLC) coupled with inductively coupled plasma mass spectrometry (ICP-MS) method has been developed for the determination of vitamin B12. The method was based on efficient isocratic separation with a

An Octacalcium Phosphate Forming Cement

April 16, 2010
Author(s)
Milenko Markovic, Laurence C. Chow
… in a physiological-like solution (PLS) for 1 d, 3 d, and 7 d. In CPC specimens prepared with water, calcium … (HA) was formed and DTS and P were (9.03 ± 0.48) MPa and (37.05 ± 0.20) vol % after 1 d, respectively, and … and (4.30 ± 0.60) MPa and (41.38 ± 1.65) vol % after 7 d, respectively. For each group DTS and P did not change …

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

October 1, 2000
Author(s)
Hockin D. Xu, F Eichmiller, Anthony A. Giuseppetti
… (29 8) for E-glass, and (24 4) for polyglactin, with 5.7% volume fraction and 75 mm fiber length. In comparison, the … also played an important role. For composites containing 5.7% aramid fibers, the ultimate strength was (24 3) for 3 mm fibers, (36 13) for 8 mm fibers, (48 14) for 25 mm fibers, and (62 16) for 75 mm fibers. At 25 …

Effect of Mixing Ratio and pH on the Reaction Between Ca 4 (PO 4 ) 2 O and CaHPO 4

May 1, 2000
Author(s)
S Matsuya, Shozo Takagi, Laurence Chow
… in 12.5 mL of 0.15 mol/L KCl solution, at initial pH about 7, and the pH was allowed to drift for 24 h. Results show … with TTCP/DCPA of < 0.67, the pHs were between 5.3 and 7. The slurries with TTCP/DCPA molar ratios between 0.5 and 1 … beginning immediately and progressing slowly through 48 h while the DCPA hydrolysis began several hours after the …

Evaluation of the state-of-the-art measurement capabilities for selected PBDEs and decaBB in plastic by the international intercomparison CCQM-P114

December 9, 2009
Author(s)
Michele M. Schantz, Katrice A. Lippa, R. Zeleny, S. Voorspoels, M. Ricci, Dorit Becker, M. Sittidech, A.M.F. Wong, D.H. Kim, S. Mingwu, S. Matsuyama
An international intercomparison involving eight National Metrology Institutes (NMIs) was conducted to establish their current measurement capabilities for determining five selected congeners from the brominated flame retardant classes polybrominated

Effect of Molecular Weight and Layer Thickness on the Dielectric Breakdown Strength of Neat and Homopolymer Swollen Lamellar Block Copolymer Films

July 31, 2020
Author(s)
Saumil Samant, Monali Basutkar, Maninderjeet Singh, Ali Masud, Christopher A. Grabowski, Kim Kisslinger, Joseph Strzalka, Guangcui Yuan, Sushil K. Satija, Ikeoluwa Apata, Dharmaraj Raghavan, Michael Durstock, Alamgir Karim
Designing next generation light-weight pulsed power sources hinges on understanding the factors influencing the performance of high energy density storage materials. In prior work, we demonstrated the use of Cold Zone Annealing with Soft Shear (CZA-SS) as

Changes in Lactate and Other Ions in Plaque and Saliva After a Fluoride Rinse and Subsequent Sucrose Administration

January 1, 2002
Author(s)
Gerald L. Vogel, Z Zhang, Laurence C. Chow, A L. Galvin
… observations. Subjects (n = 13) accumulated plaque for 48 h, and then rinsed with a high potency 228 ppm controlled … The subjects then rinsed with 10 mass % sucrose and 7 min later, a second set of plaque and saliva samples were … lactate production, or enamel saturation was observed 7 min after the sucrose rinse. However, a somewhat larger …

Functional Recovery Performance Targets Workshop Report

September 30, 2025
Author(s)
Lucy Arendt, Katherine Johnson, Siamak Sattar, Michael Valley, Divya Chandrasekhar, Laurie Johnson, Ryan Kersting
… Technology Council (ATC-169). The workshop convened 48 interdisciplinary experts to provide input on the …

Evaluation of upper age limits for HPV vaccination of US men for prevention of oropharyngeal cancers: A microsimulation-based modeling study

January 19, 2023
Author(s)
Rebecca Landy, Gregory Haber, Barry Graubard, Nicole Campos, Stephen Sy, Jane Kim, Emily Burger, Li Cheung, Hormuzd Katki, Maura Gillison, Anil Chaturvedi
… probability of oral HPV16 infection is 10.5% (range=9.7%-11.7%) in US men; incidence peaks around age 25 … Most causal oral HPV16 infections (71%) are acquired by age 26, and 28% are acquired between …

Characterization of the Alloy-Solution Interface

October 16, 2008
Author(s)
H J. Mueller
… at component concentrations of (6.8, 5.4, 5.4, 5.0, 16.7) mmol/L, respectively, (pH = 4.8). For FT-IR and CAA, Co, … ct , τ, and n were (3 and 15) nF, (22 and 65) Ω}, (10 and 7) ms, and 0.56 and 0.77, respectively. In-situ IR initially …

NIST Methods for Certification of SRM 1941 and SRM 1974

July 1, 1993
Author(s)
Michele M. Schantz, Bruce A. Benner Jr, S. N. Chesler, Richard G. Christensen, B. J. Koster, J. Kurz, Reenie M. Parris, Stephen A. Wise
… Organic Analytical Methods, NOAA Technical Memo NOS ORCA 71 …
Displaying 451 - 473 of 473
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