February 2019 - Ifeffit - millenia.cars.aps.anl.gov

Seeking a post-doctoral research in Environmental Chemistry at Carnegie Mellon University
by Gregory Lowry 08 Feb '19

08 Feb '19

Open Position Postdoctoral Researcher Civil and Environmental Engineering Carnegie Mellon University I am seeking a post-doctoral researcher in environmental chemistry. Candidates must have experience using synchrotron X-ray absorption spectroscopy for determining metal speciation in environmental samples (or similar matrices), and/or experience using synchrotron X-ray Fluorescence and XANES mapping (GeoPIXIE) to speciate metals in environmental or biological samples. Experience with mercury and/or arsenic geochemistry, and working knowledge of other characterization methods for metal-based nanoparticles (e.g. XRD, FTIR, XPS, ICP-MS, spICP-TOF-MS) are desirable. A demonstrated ability to publish research in high quality journals, meet deadlines, and write proposals is required. Effective English language oral and written communication are required. The candidate will interact with an interdisciplinary research team of faculty, post-docs, and Ph.D. students and with industry collaborators on a variety of projects including speciating Hg in matrices relevant to oil and gas exploration and metals speciation in plants. The successful candidate will be expected to design and conduct experiments in aqueous and non-aqueous matrices, collect and analyze synchrotron XAS spectra on samples containing mercury, arsenic, and other metals, prepare manuscripts and monthly research reports, assist in proposal writing, and present findings at national and international professional conferences. The position is for a minimum of one year, renewable depending on performance. Interested applicants should contact Prof. Greg Lowry glowry(a)cmu.edu. Please send a brief cover letter, curriculum vitae, a brief statement of research interests and the contact information for at least three references. Applications will be accepted until the position is filled. -- Gregory V. Lowry Walter J. Blenko, Sr. Professor of Civil & Environmental Engineering Deputy Director, Center for Environmental Implications of Nanotechnology Carnegie Mellon University, Pittsburgh, PA 15213

1 0

Problem with running mback algorithm in the newer version of Larch
by Tayal, Akhil 08 Feb '19

08 Feb '19

Hello Matt, I found that while running the 'mback' algorithm there is an error in accessing f1_chantler database. Weirdly the commands work well for the older (0.9.35) version that happens to be installed on my old computer. But for the latest version (0.9.40), I simply could not able to generate the value of f1 and hence could not use the 'mback' algorithm. Do you have any suggestion to troubleshoot this issue on the latest version of the software? Also is there any inbuilt command to perform 'flattening algorithm' for normalization or one has to do it manually. Thanks, Akhil

2 2

Post doctoral position at Pohang Accelerator Laboratory
by 이국승(에너지환경소재연구팀) 08 Feb '19

08 Feb '19

Dear all, A post-doctoral position is available at Pohang Accelerator Laboratory. Tasks will be development of electrocatalysts for fuel cells and/or water splitting and their XAFS analyses. Candidates should have a PhD degree in materials science, chemistry, chemical engineering, or other appropriate areas and should have experience in XAFS analysis and excellent writing and communication skills. Interested candidates please may contact Dr Kug-Seung Lee (lks3006(a)postech.ac.kr<mailto:lks3006@postech.ac.kr>) with your CV. Additioinal documents may be required, for example, letters of reference, representative publications, etc. Thank you. Kug-Seung Lee, Ph.D. Staff Scientist Manager, 8C Nano Probe XAFS Beamline Pohang Accelerator Laboratory Pohang 790-784, Republic of Korea Office: +82-54-279-1522 Fax: +82-54-279-1599 C. P.: +82-10-6419-7801 Researcher ID: http://www.researcherid.com/rid/D-7088-2011

1 0

Larch 0.9.41
by Matt Newville 08 Feb '19

08 Feb '19

Hi Folks, Larch 0.9.41 is now available, with installers for Windows, MacOS, and Linux at https://millenia.cars.aps.anl.gov/xraylarch/installation.html If you have already installed Larch 0.9.39 or later, you should be able to update to the latest version with `conda update -c gsecars xraylarch`, Larch 0.9.41 is about six months in the making. There have been some important improvements in XAFS and XANES analysis, including improved MBACK algorithm (thanks Marco Alsina!) and many bugfixes and in the XAS Viewer GUI for pre-edge peak-fitting and linear combination analysis. Significant improvements have also been made X-ray microprobe analysis, including for XRF analysis as well as XRF and XRD mapping tools, including support for reconstructing X-ray fluorescence and diffraction tomography data. Larch now includes the very useful Dioptas GUI for XRD patterns from Clemens Prescher. At the very least, this can be used to view and calibrate X-ray diffraction data ("replace Fit2D") using pyFAI and related libraries from the folks at ESRF. For Python programmers: Version 0.9.41 makes a small but significant step toward making Larch a "more normal Python library", so that Python scripts using Larch as a library can avoid having to create and keep a running interpreter for many basic analysis steps, including interacting with the database of X-ray properties that includes data from Elam et al, Chantler, and so on. Version 0.9.41 works with Python 3.7, 3.6, and 2.7. The installers linked above are built with Anaconda Python 3.6. Most dependencies are also available as conda or pip packages for Python 3.7, and some are available with Python 2.7. This is the last version of Larch to be tested with Python 2.7. We will not deliberately break Python 2.7 until after 0.9.42 is released, at which point Larch will stop working with Python 2.7. We expect this to happen in two or three months. In the meantime, we will not intentionally break things for Python 2 but will no longer test or support Python 2. Please let us know if you having any questions or trouble. Cheers, --Matt Newville

1 0

Problems Opening a larch saved athena Project in Athena
by Luis Carlos Colocho Hurtarte 05 Feb '19

05 Feb '19

Hi all, I have a some data from CLS, using the plug-in in Athena I could open most of them except a couple. I managed to open the rest using Larch (no Problem there), my interest is solely in saving them as .xmu/csv. Nevertheless when I saved in csv in Larch the axis order is inverted (X1 – Yn and Xn to Y1), also if I save them as an athena Project through larch and open it in Athena, the program crashes. Is this some kind of bug? The data plotted in Larch is fine, but the file is corrupted? Anyone experienced something like that passing from larch to Athena? Kind regards Luis -- Luis Carlos Colocho Hurtarte Lehrstuhl für Bodenkunde (Chair of Soil Science) Technische Universität München Emil-Ramann-Str. 2 85354 Freising Germany Telefon: +49 8161 71 -5266 Fax: +49 8161 71 -4466 http://www.soil-science.com

2 1

Post Doctoral Position at Frei University Berlin/ Uni Bayreuth
by Ditty Dixon 05 Feb '19

05 Feb '19

*Dear All,* *As a part of joint German-Czech Research project "*Operando Fuel Cell" a* post-doctoral position is available for three years starting from 1st of April 2019 at *Universität Bayreuth/Frei University Berlin, Germany. The aim of the joint project with partners from Berlin and Prague is to obtain a more detailed insight into the complex reaction and degradation mechanisms in high temperature polymer electrolyte membrane fuel cells (HT-PEMFC). For this purpose, X-ray absorption spectroscopy (XAS) will be used during fuel cell operation in realistic working conditions. Your tasks will be: • Construction of testbench for HT-PEMFC tests • Design of a suitable in-situ cell for hard X-ray measurements at Pt L2 and L3 edges • Acquisition of beamtimes at BESSY and PETRA • In-operando XAS measurements at different Pt-based catalysts We are looking for a candidate with PhD, having experience in material characterization using spectroscopy techniques. Interested candidate may please contact Prof. Christina Roth (christina.roth(a)fu-berlin.de) or ( kerstin.soellner(a)uni-bayreuth.de) along with your CV. Thank You -- Dr. Ditty Dixon Ramanujan Faculty Electrochemical Power Source Division Central Electrochemical Research Institute (CSIR-CECRI) Karaikudi, India, 630003 Ph:00919400243084

1 0