July 2018 - Ifeffit - millenia.cars.aps.anl.gov

Re: [Ifeffit] Ifeffit Digest, Vol 169, Issue 9
by Abhinav Prabhakar 05 Aug '20

05 Aug '20

Hello, Thank you for your reply. Attached is the CIF file in question. The crystal is Tobermorite 14A, taken from COD website. However, the structure has partial occupancy and it is modified to include full occupancy. The modified CIF file shows a space group of B11b (and cannot be recognized by Artemis). I tried a C1c1 space group (it works) but it shows the same structural values as a P11b. Regards, AP On Tue, Mar 14, 2017 at 1:00 AM, <ifeffit-request(a)millenia.cars.aps.anl.gov> wrote: > Send Ifeffit mailing list submissions to > ifeffit(a)millenia.cars.aps.anl.gov > > To subscribe or unsubscribe via the World Wide Web, visit > http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit > or, via email, send a message with subject or body 'help' to > ifeffit-request(a)millenia.cars.aps.anl.gov > > You can reach the person managing the list at > ifeffit-owner(a)millenia.cars.aps.anl.gov > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Ifeffit digest..." > > > Today's Topics: > > 1. Re: Space group type in Artemis (Bruce Ravel) > 2. Data export and coordination number (Abhinav Prabhakar) > 3. Re: Data export and coordination number (Bruce Ravel) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 13 Mar 2017 09:20:14 -0400 > From: Bruce Ravel <bravel(a)bnl.gov> > To: XAFS Analysis using Ifeffit <ifeffit(a)millenia.cars.aps.anl.gov> > Subject: Re: [Ifeffit] Space group type in Artemis > Message-ID: <3853f1f7-61fd-6886-306f-040c540ecae1(a)bnl.gov> > Content-Type: text/plain; charset=windows-1252; format=flowed > > On 03/11/2017 05:56 AM, Abhinav Prabhakar wrote: > > Hello, > > > > I have a question about the working of Artemis as a new user. > > > > Artemis does not recognize the space group B11b. When importing a cif > > file of a crystal with this symmetry, it sends a prompt message that the > > space group symbol cannot be recognized. As a result, I changed it to > > P11b and it works. But would this change any crystal information (for > > eg. Degen, Reff values) significantly? > > I am not a crystallography expert in any sense. When I wrote Artemis, I > meticulously followed what I found in the fourth edition of the > International Tables for Crystallography, Volume A. Every symbol > defined in there is recognized by Artemis. (Well, I guess I should say > that every symbol is /supposed to be/ recognized by Artemis. If one is > missing, that's a bug and should be reported.) > > "B11b" is not a symbol that I found in my copy of ITC volume A. As > Robert suggested, there may be a way to rotate group 9 so that "B11b" is > an interpretable symbol in the abstract. But Artemis does not know how > to do that. (Nor do I.) > > "P11b" is a setting for space group #7. If, as Robert suggests, your > CIF file is for space group #9, then the answer to your last question is > yes. It is plainly obvious that using a different space group will > change the degeneracies and distances. > > > Of course, you did not bother to include a copy of the CIF file in > question to your original email, so it is not actually possible for > Robert or I or anyone else to actually help you effectively. > > At the risk of sounding like an annoyingly broken record, everyone > should take the time to ask a good question or write an actionable bug > report: > > http://bruceravel.github.io/demeter/documents/SinglePage/help.html > http://bruceravel.github.io/demeter/documents/SinglePage/bugs.html > > B > > > -- > Bruce Ravel ------------------------------------ bravel(a)bnl.gov > > National Institute of Standards and Technology > Synchrotron Science Group at NSLS-II > Building 743, Room 114 > Upton NY, 11973 > > Homepage: http://bruceravel.github.io/home/ > Software: https://github.com/bruceravel > Demeter: http://bruceravel.github.io/demeter/ > > > ------------------------------ > > Message: 2 > Date: Mon, 13 Mar 2017 21:48:31 +0800 > From: Abhinav Prabhakar <abhi.prabhakar(a)gmail.com> > To: ifeffit(a)millenia.cars.aps.anl.gov > Subject: [Ifeffit] Data export and coordination number > Message-ID: > <CA+nbL85FJReunY1Am1oeNTMtFskXMd8FmH_OgaO00mnmew2c-g(a)mail.gmail. > com> > Content-Type: text/plain; charset="utf-8" > > Hello, > > As a new user, I have some questions related to the use of Athena and > Artemis: > > i) Is it possible to extract the normalized/background corrected data from > Athena (in E-,k- and R- space) and export it as numbers (to Excel perhaps)? > > ii) Using Artemis, how can coordination numbers (N) be expressed as 'guess' > parameters (Artemis allows only numerical values for N)? > > Thank you. > > Regards, > > Abhinav Prabhakar (Mr.) >

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Re: [Ifeffit] using the mail list archive for mac install
by Matt Newville 17 Aug '18

17 Aug '18

Hi Joel, > I ran into the problem that some people seem to have with Demeter on mac while > upgrading to High Sierra. I found a fix on this mail list, but… Yeah, Demeter on MacOS is a continuing challenge. Even when it can be installed, parts of the GUI interaction are pretty buggy (I believe this must be due to wxPerl on Mac). MacPorts seems to need a fair amount of attention and expects the end user to know Unix command line tools well enough to be able to run updates and understand and react to error messages. For sure, it is a useful resource for developers, but it seems like it is not really designed for deploying end-user software. Still , I don't know of a better alternative for getting Demeter working on MacOS. I've tried many of the alternatives, and wxPerl seems to be a real stumbling block for all of them. > 1) I can’t download Template.pm from the archive (bin file that uncompresses to cpgz file > that uncompresses back to a bin file…) I think that the advice from Luke and Bruce back in April was to try to find and install version 1.47 of Text::Template. You might find this at https://metacpan.org/source/MSCHOUT/Text-Template-1.47/lib/Text and try unpacking and installing that. There may be a way to specify particular versions with the "cpan" program, but I do not know how to do it. I don't think we want "install old version of some library" to be a long term solution (this will break other things eventually), but it might work for you. > 2) Matt mentions that he installed 0.9.26 from macports, but I see only 0.9.25 (stable & develop). To clarify, in April I updated MacPorts to the latest versions, installed the packages for Demeter 0.9.25. Then I installed Demeter 0.9.26 from source code on top of that. That might also work , but it's probably more work than most folks would want to do. Cheers, --Matt

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Basic questions about the preliminary data processing in Athena
by Haifeng Li 14 Aug '18

14 Aug '18

Dear ALL, I am a beginner in Athena. Recently I got the spectra and I am confusing about the data calibration and alignment. The manual shows that calibrate the reference data of one scan and align other reference data to that calibrated one. Here I want to show examples. I have two samples A and B, Each sample has three scans with the corresponding reference data. For sample A, 1st scan is calibrated and the other two scans are aligned to 1st scan. Then merge them into merged A. The same procedures for sample B and get merged B. If I want to compare XANES of sample A and B, do I need to align the merged reference data between A and B? If so, why? My understanding is that all scans (original data and merged data) in sample A and B are calibrated to standard edge energy. Why do they need to align? I appreciate your help. Thanks, Haifeng

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Demeter Installation Mac server error
by Laurane Léost 27 Jul '18

27 Jul '18

Dear all, I would like to install Demeter on Mac device. I followed all the instructions with "Installing Demeter on the Mac" in the website. But in the terminal window, when i write : "sudo port install xorg-server demeter", this message appears : "Error: Port xorg-server not found". Did someone had already receive this type of message? Or know a way to install the program. Thanks for your help. -- Laurane Léost

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ZrO2 and HfO2 EXAFS spectra
by Martin McBriarty 23 Jul '18

23 Jul '18

Friends in XAFS, Do you have any EXAFS spectra of single-phase ZrO2 or HfO2 that you'd be willing to share? In particular, I'm looking for the monoclinic (P21/c), tetragonal (P42/nmc), and orthorhombic (Pbca and Pca21) phases of each material. Bulk, interface-stabilized, pure, or lightly doped is fine. I'd prefer mu(E) spectra, but chi(k) would work as well. Thank you for any help or recommendations! Martin Martin E. McBriarty, Ph.D. Scientist III, Intermolecular Inc. San Jose, CA

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Re: [Ifeffit] Fe Standards (Naomi Intrator)
by Denis Testemale 23 Jul '18

23 Jul '18

I'm not sure my previous message went through (I think I screwed up the mailing list adress). So here we go again. Dear Naomi, I attach 2 files with the normalized spectra of Fe2+ (50mmol dissolved FeCl2 in 0.5M HCl) and Fe3+ (??mmol dissolved Fe2(SO4)3 in 2M H2SO4) in solution. In both cases iron is octahedrally coordinated to water molecules. The spectra come from 2 different experimental runs, but the calibration of the beamline was done consistently (Fe metallic foil, 1st maximum of the derivative set at 7112eV). Unfortunately the Fe3+ spectrum is only XANES. If you need EXAFS let me know, I might find something if I dig hard in my hard disk. Cheers denis Date: Tue, 10 Jul 2018 21:23:34 +0000 From: Naomi Intrator<naomii(a)princeton.edu> To:"ifeffit(a)millenia.cars.aps.anl.gov" <ifeffit(a)millenia.cars.aps.anl.gov> Subject: [Ifeffit] Fe Standards Message-ID: <A986AA38C24BCD4E9BAAC1237600734D0E517089@csgmbx217w> Content-Type: text/plain; charset="iso-8859-1" Hi all, I'm doing a project on Fe and was wondering if anyone has spectra of Fe(II) and/or Fe(III) standards they wouldn't mind sharing. I'm specifically looking for XANES of Fe2+ and Fe3+ ions in water. Thanks in advance, Naomi -- Institut Néel - CNRS http://neel.cnrs.fr/spip.php?rubrique264 +33 476 881 045

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Re: [Ifeffit] XANES from FEFF9
by manju rao 18 Jul '18

18 Jul '18

Hi Matt As I am new to FEFF, I was estimating SO2 to be equal to 1 for XANES. But I don't know if it was good to have such guess or not. By changing Exchange card from 0 0 0 0 to 0 0 0 2, I am getting a noticeable change in absorption edge. The edge showed a little shift to higher energy and also slight fall in amplitude of edge. These changes are not ignorable. So I am confused about what approach to follow. Manju Sent from my iPhone

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set restrain
by Dien.Li＠srnl.doe.gov 17 Jul '18

17 Jul '18

Hi, all I wonder if anyone can suggest me on how to set up restrain of a parameter in GDS, for example, to restrain ss in a certain range or no negative. Thank you so much. Dien Li

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XAFS hands-on course at DESY
by Edmund Welter 17 Jul '18

17 Jul '18

Dear colleagues, we are organising a XAFS hands-on course at DESY this year. The date is 3rd - 7th of September 2018. More information can be found on the attached flyer and on our workshop webpage: https://indico.desy.de/indico/event/21097/overview In case of questions, please do not hesitate to contact us via e-mail. xafs-course(a)desy.de Best regards, Wolfgang Caliebe, Edmund Welter

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micro-XAS Imaging Post-Doc Position
by Ritimukta Sarangi 16 Jul '18

16 Jul '18

Hello, Apologies for the spam email. We have a 3-year position available for micro-XAS imaging for biological applications at SSRL, SLAC, Menlo Park, CA. The details of the position are attached. Please contact me directly if you or anyone you know might be interested. Best Wishes, Riti Sarangi SSRL, SLAC

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XANES from FEFF9
by manju rao 13 Jul '18

13 Jul '18

Hi. I am trying XANES simulation in FEFF9. My system of calculation is SrZnO2 and I am simulating Sr K edge. I noticed that on changing SO2 card from 0.0 to 1.0, there is change in position as well as profile of absorption edge. Also, by selecting or deselecting EXCHANGE card, some changes are also there. So, which approach is to be followed to obtain trust-able spectra? Please help. Manju Research Scholar Department of Physics Punjabi University, Patiala- 147 002 Punjab, India.

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Importing 100 element Ge data into Larch
by Macon Abernathy 13 Jul '18

13 Jul '18

Hey all, Has anyone had success loading data from larger pixel arrays into Larch? I have data collected on a 100 element Ge detector that results in Athena crashing upon import (running on Mac OS 10.13.4, Demeter v9.25). I figure this is a good task for Larch, but am having a difficult time figuring out how to import all 100 channels for each data set simultaneously. Thanks in advance for any tips, Cheers, Macon J. Abernathy Ph.D Student-Ying Biogeochemistry Lab Environmental Toxicology Program College of Natural and Agricultural Sciences University of California, Riverside maber001(a)ucr.edu

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Re: [Ifeffit] window 10
by manju rao 13 Jul '18

13 Jul '18

Hi Dien I guess this is the problem with new version too. ARTEMIS could run once for any calculation with no time limit, but if I open new data file, it got crashed. So I do one fitting at a time and then restart it for new fitting. Regards Manju Sent from my iPhone

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window 10
by Dien.Li＠srnl.doe.gov 11 Jul '18

11 Jul '18

Hi, Bruce and Matt We just transitioned to Window 10 yesterday. I just found that as I ran Artemis for EXAFS data fitting, it constantly crashed (stopped running) my computer, I am using Demeter 9:24 I believe, is it possible I need a new version, where is the link for latest version? Thanks. Dien Li Savannah River National Laboratory

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Fe Standards
by Naomi Intrator 10 Jul '18

10 Jul '18

Hi all, I'm doing a project on Fe and was wondering if anyone has spectra of Fe(II) and/or Fe(III) standards they wouldn't mind sharing. I'm specifically looking for XANES of Fe2+ and Fe3+ ions in water. Thanks in advance, Naomi ---

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copper fluoride
by Bruce Ravel 10 Jul '18

10 Jul '18

Hi all, I wonder if anyone has a spectrum of copper fluoride, CuF2, that they are willing to share. This would be a big help for my undergraduate student's summer research project. Thanks! B -- Bruce Ravel ------------------------------------ bravel(a)bnl.gov National Institute of Standards and Technology Synchrotron Science Group at NSLS-II Lead Beamline Scientist, 06BM (BMM) Building 743, Room 114 Upton NY, 11973 Homepage: http://bruceravel.github.io/home/ Beamline: https://www.bnl.gov/ps/beamlines/beamline.php?r=6-BM Software: https://github.com/bruceravel Demeter: http://bruceravel.github.io/demeter/

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imaginary part
by John Hummel 10 Jul '18

10 Jul '18

I have run a feff calculation in artemis and pulled the information from the output file in an attempt to sum the paths in python. However I am having some difficulty in determining the imaginary part of the waves. I was wondering how the artemis program goes about calculating the imaginary values. Any insight would be greatly appreciated. Thank you, John

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using the mail list archive for mac install
by Joel Brugger SAM 10 Jul '18

10 Jul '18

I ran into the problem that some people seem to have with Demeter on mac while upgrading to High Sierra. I found a fix on this mail list, but 1) I can¹t download Template.pm from the archive (bin file that uncompresses to cpgz file that uncompresses back to a bin file) 2) Matt mentions that he installed 0.9.26 from macports, but I see only 0.9.25 (stable & develop). Sorry for the trivial questions :-) All the best, JOEL [Ifeffit] install for mac error Luke Higgins pmljrh at leeds.ac.uk <mailto:ifeffit%40millenia.cars.aps.anl.gov?Subject=Re:%20Re%3A%20%5BIfeffit %5D%20install%20for%20mac%20error&In-Reply-To=%3CD54C3C92-BBDF-484E-83DA-31D EE99F28A6%40leeds.ac.uk%3E> Tue Apr 3 12:47:31 CDT 2018 * Previous message (by thread): [Ifeffit] install for mac error <http://millenia.cars.aps.anl.gov/pipermail/ifeffit/2018-April/009380.html> * Next message (by thread): [Ifeffit] install for mac error <http://millenia.cars.aps.anl.gov/pipermail/ifeffit/2018-April/009383.html> * Messages sorted by: [ date ] <http://millenia.cars.aps.anl.gov/pipermail/ifeffit/2018-April/date.html#938 2> [ thread ] <http://millenia.cars.aps.anl.gov/pipermail/ifeffit/2018-April/thread.html#9 382> [ subject ] <http://millenia.cars.aps.anl.gov/pipermail/ifeffit/2018-April/subject.html# 9382> [ author ] <http://millenia.cars.aps.anl.gov/pipermail/ifeffit/2018-April/author.html#9 382> Hi All, I see this error too. This is a bit of a bodge job, but if you replace: /opt/local/lib/perl5/vendor_perl/5.26/Text/Template.pm With the attached template.pm from p5.24, it seems to work fine. I¹d just rename the old Template.pm in the same directory, rather than deleting it since another program may end up needing the most recent one. Cheers, Luke From: Ifeffit <ifeffit-bounces at millenia.cars.aps.anl.gov <http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit> > on behalf of Chris Patridge <patridge at buffalo.edu <http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit> > Reply-To: XAFS Analysis using Ifeffit <ifeffit at millenia.cars.aps.anl.gov <http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit> > Date: Tuesday, 3 April 2018 at 19:22 To: XAFS Analysis using Ifeffit <ifeffit at millenia.cars.aps.anl.gov <http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit> > Subject: Re: [Ifeffit] install for mac error Thank you for the input Matt. I am glad to hear that it is not ³user error². I tried it again and I need to correct my earlier statement because Artemis GUI will stay open after the warning however Athena closes/crashes. I will try on a different system. Thanks again, Chris Sent from my iPhone On Apr 3, 2018, at 11:52 AM, Matt Newville <newville at cars.uchicago.edu <http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit> <mailto:newville at cars.uchicago.edu <http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit> >> wrote: Hi Chris, On Mon, Apr 2, 2018 at 4:15 PM, Christopher Patridge <patridge at buffalo.edu <http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit> <mailto:patridge at buffalo.edu <http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit> >> wrote: Hello everyone, I tried to install demeter on my mac (running high Sierra) and it appeared everything went well. However when I run either Athena or Artemis I get an error shown below about Demeter::Templates: showing a error and I am not sure how I can correct this error. Any help would be appreciated. Thanks in advanced, I can confirm this. I just did a fresh install of Macports on 10.13.3 (high sierra). The MacPorts install was not super easy, but once it got to the demeter install, that part went fine. I see the same problem with athena from demeter 0.9.25. I think the warnings about "Demeter::Templates::F" and so forth are meant to be warnings only -- I think they may not be related to the crash of athena. For me, hephaestus gives the same sort of warnings, but runs fine. I can install and run Demeter 0.9.26 (including using Larch as a backend) using Macports, though there are definitely some Mac-specific weirdness. Anyway, I do not believe that "install from source" is a feasible approach for demeter on OSX. I do not know enough about Macports to update the existing package. I don't know that using some other system would be an improvement. We keep seeing problems with demeter on OSX. I'm not sure what the right answer is. Anyone have any suggestions? --Matt _______________________________________________ Ifeffit mailing list Ifeffit at millenia.cars.aps.anl.gov <http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit> <mailto:Ifeffit at millenia.cars.aps.anl.gov <http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit> > http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit

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Athena for peak fitting or deconvolution
by Dien.Li＠srnl.doe.gov 09 Jul '18

09 Jul '18

Hi, Bruce I am using the Demeter 9.24 version. I saw in the "main" window the peak fitting and deconvoluting data, but as I clicked, it is not available. Any new update now. Thanks. Dien

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Postdoc position
by Anatoly Frenkel 09 Jul '18

09 Jul '18

Please pass this info along to those who may be interested in this opportunity: There is an opening for a postdoctoral research associate in my group. The postdoc will be stationed in Brookhaven National Laboratory and work as a member of a multi-institution team to develop and apply new methods of operando characterization of catalysts. Expert knowledge of XAFS, strong publication record and strong background in condensed matter physics are required. For inquiries please contact me. Anatoly ------------------------------------------------------------------- Anatoly I. Frenkel Professor Department of Materials Science and Chemical Engineering Stony Brook University Stony Brook, NY 11794, Ph: 631-632-2751 Email: anatoly.frenkel(a)stonybrook.edu <https://mail.bnl.gov/OWA/redir.aspx?C=F6wCGt4adziN6IvpdRQ-rWdgy3Oaoif_x-0yb…> http://you.stonybrook.edu/frenkel Joint Appointment: Chemistry Department, Brookhaven National Laboratory Upton, NY 11973. Ph: 631-344-3013. Group: 631-344-3494 Email: frenkel(a)bnl.gov https://www.bnl.gov/chemistry/bio/FrenkelAnatoly.asp Spokesperson, Synchrotron Catalysis Consortium (SCC) at BNL http://you.stonybrook.edu/scc2 -------------------------------------------------------------------

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Larch 0.9.38
by Matt Newville 08 Jul '18

08 Jul '18

Hi Folks, Version 0.9.38 of Larch has been released and binary installers are now available for Windows, MacOS, and Linux. There have been many minor improvements made in the past several months, particularly for the XAS Viewer application. XAS Viewer is now very close to having feature parity with Athena and Sixpack, with a few things still missing and a few things slightly improved. This should be of particular interest for Mac users, where Athena has proven difficult to install and buggy, and support for Sixpack has also become harder. At this point, XAS Viewer can read data from plain ASCII files or from recent Athena Project files, but does not yet support quite as many different file types as Athena and Sixpack -- help on this would be greatly appreciated! It can do basic group manipulation such as merging, and groups and plot one or more XAFS spectra in various stages of the XAFS normalization process and can save data to Athena Project file or save multiple data sets to CSV files. XAS Viewer has simple dialogs for doing common data correction steps including recalibration, rebinning of QXAFS data (as per a recent discussion), glitch removal, correcting over-absorption, smoothing, and spectral deconvolution. For analysis, XAS Viewer has a notebook panel for pre-edge subtraction and normalization, and one for basic EXAFS processing (background removal and Fourier transforms to chi(R)). Its main emphasis is on visualization and analysis of XANES spectra and so it includes panels dedicated to fitting pre-edge peaks, Linear Combination analysis, and Principal Component Analysis. Though definitely a Graphical User Interface, with forms to guide the novice user, XAS Viewer goes out its way to do all data processing through basic Larch commands that can be viewed, copied, and turned into batch processing scripts. Documentation for all of Larch is a continual work in progress, and docs with screenshots for XAS Viewer is at https://xraypy.github.io/xraylarch/guis/xas_viewer.html Feedback or suggestions on this or any other aspects of Larch are most welcome. Larch can be installed with simple installers for Windows, Mac OSX, Linux which can be found from https://xraypy.github.io/xraylarch/installation.html At the moment, these installers all assume 64-bit operating systems and now are built using Anaconda Python version 3.6. If anyone needs to use Larch with 32-bit Windows please let me know. Support for this will probably be dropped by the end of the calendar year, but I do not know if this is necessary at all at this point. For people using Larch from Python, it can also be installed as a "conda package" for Anaconda Python, as with conda install -c GSECARS xraylarch Currently, packages are available for Python 3.6, and packages for Python 2.7 should be available within a couple days. Please let me know if you have any questions or problems, --Matt

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data after rebinning look worse in k-space than before?
by Ilya Sinev 04 Jul '18

04 Jul '18

Hi all, I have a question regarding the chi(k) function isolation and rebinning processes. I have some data recorded in quasi channel-cut modus, i.e. with the mono constantly moving and the data points collected with the highest possible rate. With 180 sec measurement in yields to a spectrum of ca. 8600 point, which obviously needs to be rebinned. The rebinned data, however, does not look good in k-space even if multiple data are merged. Moreover, I have an impression that the raw spectrum in k-space does not have those 8000+ points anymore but significantly less. Is there any reduction of the data points number that is not seen (e.g. as a preparation step for FT)? Since the unbinned data has higher quality, does it then make more sense to keep using it for EXAFS analysis? Thank you Ilya Sinev -- Herr Dr. Ilya Sinev Institute for Experimental Physics IV Faculty of Physics and Astronomy Ruhr-Universität Bochum Universitätsstrasse 150 44801 Bochum, Germany Office: NB 4/134 Phone: +49 234 32 23647 Fax: +49 234 32 14173 e-mail: <mailto:Ilya.Sinev@rub.de> Ilya.Sinev(a)rub.de www.ep4.rub.de

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