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129th AOAC INTERNATIONAL Annual Meeting and Exposition, Los Angeles, CA, September 27-30, 2015.

“Interlaboratory Studies for Dietary Supplements: Fundamentals for Understanding Supplement Composition.” (poster)

129th AOAC INTERNATIONAL Annual Meeting and Exposition, Los Angeles, CA, September 27-30, 2015. “Value

Assignment of Curcuminoids in Turmeric Standard Reference Materials.” (poster)

129th AOAC INTERNATIONAL Annual Meeting and Exposition, Los Angeles, CA, September 27-30, 2015.

“Characterization of a New Total Nutrient Standard Reference Material: Protein Drink Mix.” (poster)

129th AOAC INTERNATIONAL Annual Meeting and Exposition, Los Angeles, CA, September 27-30, 2015.

“Characterization of St. John’s Wort Standard Reference Materials (SRMs).” (poster)

12th Annual Natural Supplements: An Evidence-Based Update, San Diego, CA, January 16-18, 2015. “Interlaboratory

Studies for Dietary Supplements: Fundamentals for Understanding Supplement Composition.” (poster)

128th AOAC INTERNATIONAL Annual Meeting and Exposition, Boca Raton, FL, September 7-10, 2014. “The Role of

Standard Reference Materials in Method Performance Verification Studies.” (invited talk)

Penn State Erie, The Behrend College, Erie, PA, December 10, 2013. “Metrology 101: No Umbrella Required.” (invited

talk)

127th AOAC Annual Meeting and Exposition, Chicago, IL, August 25-28, 2013. “LC-MS and LC-MS/MS for

Determination of Water-Soluble Vitamins in Foods.” (poster)

HPLC Symposium on High Performance Liquid Phase Separations, June 16-20, 2013, Amsterdam, The Netherlands.

“Comparison of Commercial Software Approaches for Quantitation in Two-Dimensional Liquid Chromatography.”

(poster)

HPLC Symposium on High Performance Liquid Phase Separations, June 16-20, 2013, Amsterdam, The Netherlands. “LC-

MS and LC-MS-MS for Determination of Water-Soluble Vitamins in Foods.” (poster)

The Pittsburgh Conference, March 17-21, 2013, Philadelphia, PA. “Eggs, Milk, Cereal, and Meat: SRMs for Breakfast.”

(invited talk)

126th AOAC Annual Meeting and Exposition, September 30-October 3, 2012, Las Vegas, NV. “Using LC/MS/MS to

Measure Water-Soluble Vitamins in NIST Unfortified Food-Matrix SRMs.” (poster)

The Second International Vitamin Conference, May 23-25, 2012, Copenhagen, Denmark. “Microwave-Assisted Extraction

and LC-MS Analysis of Total Choline and Free Carnitine in Foods.” (poster)

The Second International Vitamin Conference, May 23-25, 2012, Copenhagen, Denmark. “Standard Reference Materials for

the Determination of Vitamins in Food, Supplement, and Clinical Samples.” (poster)

The Pittsburgh Conference, March 11-13, 2012, Orlando, FL. “Challenges in the Certification of Dietary Supplement

Standard Reference Materials.” (invited talk)

125th AOAC Annual Meeting and Exposition, September 18-21, 2011, New Orleans, LA. “Microwave-Assisted Extraction

and LC-MS Analysis of Total Choline in Foods.” (poster)

HPLC Symposium on High Performance Liquid Phase Separations, June 19-23, 2011, Budapest, Hungary. “Determination

of B-Vitamins, Choline, and Carnitine in NIST Food-Matrix SRMs.” (poster)

SupplySide East, May 2-4, 2011, Secaucus, NJ. “NIST Tools for the Analysis of Dietary Supplements and Foods.” (talk)

Annual International Conference on the Science of Botanicals, April 11-14, Oxford, MS. “NIST Tools for Quality

Assurance in Botanical Dietary Supplement Measurements.” (invited talk)

Pittsburgh Conference, March 13-17, 2011, Atlanta, GA. “Determination of Water-Soluble Vitamins in NIST Food Matrix

SRMs.” (talk)

Pittsburgh Conference, March 13-17, 2011, Atlanta, GA. “Analytical Characterization of Commercial SPS and MPS by Ion

Chromatography and Mass Spectrometry.” (poster)

124th AOAC Annual Meeting and Exposition, September 24-28, 2010, Orlando, FL. “Determination of Water-Soluble

Vitamins in NIST Food-Matrix SRMs.” (poster)

124th AOAC Annual Meeting and Exposition, September 24-28, 2010, Orlando, FL. “Method Development for the

Determination of Yohimbine in Dietary Supplements.” (poster)

Invited Speaker, June 25, 2010, College of the Holy Cross, Worcester, MA. “The Journey of a Standard Reference

Material.” (talk)