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Other Information of Note

68th Annual Denver X-ray Conference Report
Denise Zulli
ICDD, Newtown Square, PA

Location, Dates & Attendance
The 68th Annual Conference on Applications of X-ray Analysis, more commonly known as the Denver X-ray Conference or DXC, returned to the Chicago area in 2019. The week-long conference was held in Lombard, Illinois, 20 miles west of Chicago, at the Westin Lombard Yorktown Center, 5-9 August. This year was exceptional as DXC united with the 25th International Congress on X-ray Optics and Microanalysis (ICXOM-25) to create an impressive joint program that attracted over 350 registered attendees, and nearly 150 exhibit personnel. Staying true to traditional demographics, 30% of DXC attendees were from outside the USA. The ICXOM-25 meeting attracted a remarkable international crowd, with 61% of the attendees travelling from outside the United States. One registration fee gave attendees access to both programs, for a total of 278 technical presentations.

DXC Workshops
The DXC technical program began with 14 half-day tutorial workshops held on Monday and Tuesday of conference week. Topics were categorized as either XRD, XRF or Special Topic, and focused on both beginner and advanced level topics. Thirty-two specialists were invited to participate as workshop instructors, and some provided handouts that were posted on a private website for attendees only.

Combined DXC and ICXOM-25 Plenary Session
The Plenary Session, New Approaches in Imaging, was held on Wednesday morning, and was chaired by Ursula Fittschen, Clausthal University of Technology, Germany and Timothy Fawcett, Emeritus ICDD, USA. The session began with an awards presentation:
The 2019 Barrett Award was presented to Peter Stephens, Stony Brook University, USA. The 2019 Jenkins Award was presented to John Anzelmo, Anzelmo & Associates, Inc., USA. The 2019 Hanawalt Award was presented to Cev Noyan, Columbia University, USA. The 2019 Jerome B. Cohen Student Award was presented to Robert Free, Northwestern University, USA, for his work, “Method for Mapping Submicron-Scale Crystallographic Order/Disorder Applied to Human Tooth Enamel.” Other student awards included the Robert L. Snyder Student Travel Award winners: Lizeth Pabón González, Universidad Industrial de Santander, Colombia; Alexandria Hoeher, Virginia Polytechnic Institute and State University, USA; Benjamin Levy-Wendt, Stanford University, USA; Joanna Maj, Marquette University, USA; Lauren O’Neil, University of Washington, USA; Vanessa Serrano Castaño, Universidad Industrial de Santander, Colombia; Logan White, University of Tennessee Knoxville, USA and Tashiema Wilson, University of South Carolina, USA.
Following the awards presentation, remarks were made by the Plenary Session Chair, Ursula Fittschen, Clausthal University of Technology; Germany, who represented the ICXOM-25 Local Organizing Committee. Dr. Fittschen introduced the following Plenary Speakers: Benjamin Hornberger, of Lyncean Technologies, USA, who spoke on, “Multimodal Imaging Using Lyncean’s Compact Synchrotron Source;” Florian Meirer, University of Utrecht, The Netherlands, gave the second talk, “Spatial and Temporal Exploration of Heterogeneous Catalysts with Synchrotron Radiation;” Gayle Woloschak, Northwestern University, Feinberg School of Medicine, USA, presented the work, “X-ray Imaging from Tissues to Cells to Subcellular Structures.” The Hanawalt Award Lecture by Cev Noyan, Columbia University, USA, “Nanocrystalline Powder Diffraction Analysis” completed the session.

DXC Special Sessions
From Wednesday afternoon through Friday morning, 17 half-day oral sessions were held. Nearly 120 presentations were organized in the oral sessions, with 29 of the presentations given by invited speakers, experts in their respective fields. Included was a special student presenter session, Education in X-ray Analysis, chaired by Martina Schmeling of Loyola University Chicago, USA. The student
session gave an opportunity for young scientists to network, not only with their peers, but also members of the DXC Organizing Committee.

ICXOM Special Sessions
ICXOM sessions ran Monday through Thursday of conference week, and included eight sessions on various topics such as X-ray Optics, New Detectors & Instrumentation, Advanced XRF of SR Nanoprobes, Cultural Heritage, Functional Materials, Earth & Environmental Sciences, Data Analysis and Biological Applications.

Poster Sessions
Posters were presented on Monday and Tuesday evening of conference week, in conjunction with the exhibits and a wine and cheese reception. The ICXOM and XRF posters were presented on Monday evening, and on Tuesday evening the XRD poster session was held. Two E-poster stations were also set-up in the exhibit hall. Attendees were given the opportunity to study electronic copies of the posters at the E-poster stations, or through the mobile app, Guidebook. Best poster awards were chosen; the following presenters were announced as winners:

ICXOM Best Poster Awards:
“A Combined Approach to High-Throughput Single Catalyst Particle Diagnostics”
A.E. Nieuwelink, M.E.Z. Velthoen, Y.C.M. Nederstigt, K.L. Jagtenberg, F. Meirer, B.M.
Weckhuysen, Utrecht University, The Netherlands

“Full-field Structured-Illumination Super-Resolution X-ray Transmission Microscopy”
B. Günther, L. Hehn, M. Dierolf, F. Pfeiffer, Technical University of Munich, Germany
A. Hipp, Helmholtz Zentrum Geesthacht, Germany

XRF Best Poster Award:
“Measurement of Continuous X-ray Polarization by 3D-printed Instrument”
R. Tanaka, D. Yamashita, J. Kawai, Kyoto University, Japan

XRD Best Poster Awards:
“Characterization of Synthetic and Biogenic Hydroxyapatite Using Modern Synchrotron Pair Distribution Function Techniques”
E.L Arnold, K.D. Rogers, Cranfield University, UK
C. Greenwood, University of Keele, UK
D.L. Keeble, Diamond Light Source, UK

“Structure and Hirshfeld Surface Analysis of a New Structure of Oxymetazoline Chloride”
K.V. Serrano, R.A. Toro, J.A. Henao, Industrial University of Santander, Colombia

Exhibits
The exhibit hall was sold out of booth space, accommodating 45 companies with displays of products and services for the X-ray community. A complete listing of exhibitors and their product descriptions can still be found on the conference website: http://www.dxcicdd.com/19/exhibitors.htm.

Social Event and Sponsorships
The conference was fortunate to have many generous companies offer their financial support as sponsors. Bruker once again reigned as Platinum Sponsor of the DXC, delivering every attendee, exhibitor, and guest with a VIP Event on the Wednesday evening of conference week. Attendees resembled celebrities as they walked the blue carpet entrance, with paparazzi taking their pictures, and entertainment provided by American Idol winner, Caleb Johnson and his band, The Ramblin’ Saints. Other sponsors included, Petrick GmbH, who very graciously supported the conference with a Gold sponsorship, while Chemplex Industries, DECTRIS, KETEK, Proto, and Specac participated as Silver sponsors. The charitable spirit of our sponsors helps to keep attendee costs low, and the quality of the conference high. We are grateful for their patronage!

Website, Abstracts and Proceedings
To view the complete DXC Program, including abstracts, please visit the Program page of the conference website, http://www.dxcicdd.com/19/program.htm. The DXC conference proceedings, Advances in X-ray Analysis (AXA), Volume 63, will be published in the summer of 2020. Select AXA papers will also be published in Powder Diffraction, as well as, the ICXOM-25 proceedings, which will also be published in Powder Diffraction. Please visit the Research Tools page of the ICDD website: www.icdd.com for free access to manuscripts published in Volumes 40 through 60 of Advances in X-ray Analysis.

2020 Meeting
The next DXC will be held on the East Coast, near Washington, DC, at the Bethesda North Marriott Hotel & Conference Center in Rockville, Maryland, 3-7 August. The hotel is steps away from the White Flint Metro Station, only 4 metro stops to Washington, DC. Mark your calendar now!

DXC in Chicago