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Displaying 301 - 319 of 319

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

Interfacial Mechanical Properties of n-Alkylsilane Monolayers on Silicon Substrates

February 1, 2013
Author(s)
Brian G. Bush, Frank W. DelRio, Cherno Jaye, Daniel A. Fischer, Robert F. Cook
… monolayers (CH3(CH2)n-1SiCl3) with chain lengths of n = 5 and 8 were prepared at room temperature, while n = 12 and … a measure of molecular order. As n decreased from 18 to 5, there was a change in molecular structure from an ordered … decreased from 1.2 GPa to 0.67 GPa and w increased from 48.6 mJ m^-2 to 60.1 mJ m^-2 as n decreased from 18 to 5. …

An Octacalcium Phosphate Forming Cement

April 16, 2010
Author(s)
Milenko Markovic, Laurence C. Chow
… α TCP/DCPA molar ratio of 1/1 and distilled water or 0.5 mol/L phosphate aqueous solution (pH = 6.1 ± 0.1 ) as the … time was (30 ± 1) min for the CPC mixed with water and (5 ± 1) min for the CPC mixed with phosphate solution. … (HA) was formed and DTS and P were (9.03 ± 0.48) MPa and (37.05 ± 0.20) vol % after 1 d, respectively, and …

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

October 1, 2000
Author(s)
Hockin D. Xu, F Eichmiller, Anthony A. Giuseppetti
… from 3-200 mm, and fiber volume fraction ranged from 1.9-9.5%. The fibers were mixed with CPC paste and placed into … (29 8) for E-glass, and (24 4) for polyglactin, with 5.7% volume fraction and 75 mm fiber length. In comparison, … 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
… the first set of experiments (no attempt to control pH), 2.5 g of each of mixtures with TTCP/DCPA molar ratio from 0.25 to 2, was placed in 12.5 mL of 0.15 mol/L KCl solution, at initial pH about 7, and … beginning immediately and progressing slowly through 48 h while the DCPA hydrolysis began several hours after the …

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
… polypropylene (BOPP) films of approximately equal} 5 J/cm 3 . In contrast, swelling L-BCP domains with …

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 …

Smoke Emissions and Buoyant Plumes above Prescribed Burns in the Pinelands National Reserve, New Jersey

September 21, 2024
Author(s)
Kenneth Clark, Michael Gallagher, Nicholas Skowronski, Warren Heilman, Joseph Charney, Matthew M. Patterson, Jason Cole, Eric Mueller, Rory Hadden
… We used pre- and post-fire fuel loading measurements in 48 operational prescribed burns to estimate combustion … factors (CC) and emissions of fine particulates (PM2.5), carbon monoxide (CO) and carbon dioxide (CO2) in pine- … Our research facilitates more accurate estimates of PM2.5, CO and CO2 emissions from prescribed burns in the …
Displaying 301 - 319 of 319
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