IUCr) Acta Crystallographica Section A Volume 45, Part 4, April 1989
A study by means of electron microscopy. S. Kuypers, G. Van Tendeloo, J. Van Landuyt and S. Amelinckx ... Interpretation of angular symmetries in electron nanodiffraction patterns from thin amorphous specimens. A. C. Y. Liu, G. R. ...
IUCr) Acta Crystallographica Section A Volume 38, Part 6, November 1982
High-resolution electron microscopy of the incommensurate structure in Sr2Nb2O2. ... Interpretation of angular symmetries in electron nanodiffraction patterns from thin amorphous specimens. A. C. Y. Liu, G. R. ...
meetings supported since 2006
First K.H. Kuo Summer School of Electron Microscopy and Crystallography: Cryo-Electron Microscopy of Macromolecular Complexes ... of Electron Microscopy and Crystallography and International Workshop on 3D Molecular Imaging by Cryo Electron Microscopy ... Kuo Summer School of Electron Microscopy and Crystallography: International Workshop of 3D Molecular Imaging by Cryo-Electron ... 2014 Kuo Symposium on 3D Cryo-EM Molecular Imaging and 7th K.H. Kuo Summer School of Electron Microscopy and Crystallography ...
IUCr) Structural analysis of sulfur in natural rubber using X-ray absorption near-edge spectroscopy
transmission electron microscopy (Toshiki et al., 2000. ), infrared spectroscopy (Lewis et al., 1995. ), nuclear magnetic ... synchrotron radiation from the Siam Photon Laboratory storage ring operated at 1.2 GeV electron beam energy and an electron ...
IUCr) Current approaches for automated model building into cryo-EM maps using Buccaneer with CCP-EM
Kirkland, E. J. (2010). Advanced Computing in Electron Microscopy, 2nd ed. New York: Springer. Google Scholar. Kucukelbir, A., ... Keywords: model building; Buccaneer; cryo-EM; Collaborative Computational Project for Electron cryo-Microscopy; CCP-EM. ... Unless specified otherwise, all tests were performed on a total of 208 EM maps downloaded from the Electron Microscopy Data ... Technological advances have brought major improvements in single-particle electron cryo-microscopy (cryo-EM), in particular the ...
International Tables for Crystallography) Electron-diffraction methods
Edington, J. W. (1975). Electron diffraction in the electron microscope. Monographs in practical electron microscopy in ... Steeds, J. W. (1979). Convergent beam electron diffraction. Introduction to analytical electron microscopy, edited by J. J. ... Electron microscopy in mineralogy, p. 52. Berlin: Springer.Google Scholar. Gjønnes, J. & Olsen, A. (1984). Analytical electron ... Hirsch, P. B., Howie, A., Nicholson, R. B., Pashley, D. W. & Whelan, M. J. (1965). Electron microscopy of thin crystals. London ...
IUCr) most read articles in Acta Crystallographica Section A
Random conical tilt reconstruction without particle picking in cryo-electron microscopy. T.-Y. Lan, N. Boumal & A. Singer (2022 ... Ambiguity in indexing electron diffraction patterns of R3 crystals. S. Mohan (2022). Acta Cryst. A78, 507-514. ... Electron density and thermal motion of diamond at elevated temperatures. J. Beyer, T. B. E. Grønbech, J. Zhang, K. Kato & B. ... Background optimization of powder electron diffraction for implementation of the e-PDF technique and study of the local ...
IUCr) Acta Crystallographica Section A Volume 54, Part 6, Number 2 November 1998
Cover illustration: Power spectrum of a high-resolution electron-microscopy image of NiAl ,110,. The image calculation includes ... Interpretation of angular symmetries in electron nanodiffraction patterns from thin amorphous specimens. A. C. Y. Liu, G. R. ... Microscopy of semiconducting materials 1997. Institute of Physics Conference Series edited by A. G. Cullis and J. L. Hutchison ... Model studies on noise-free synthetic data sets for α-glycine, silicon and beryllium show that all-electron calculations give ...
IUCr) Facing the phase problem
Recent advances in cryogenic electron microscopy (cryo-EM) and protein structure prediction (AlphaFold) relate cogently to ... for elastic scattering of X-rays from a free electron also applies to X-ray scattering from electrons bound into atomic ... Validation of the accuracy of MAD-phased electron density. Two segments are shown from electron-density maps of the DnaK SBD ( ... The Bijvoet scattering strength at the MV peak of f′′ (λ2) is 105 electrons, and the dispersive scattering difference ,f′(λ3 ...
IUCr) Low-temperature catalyst activator: mechanism of dense carbon nanotube forest growth studied using synchrotron radiation
We used photoemission electron microscopy (PEEM) to element-specifically observe the surface morphological change of the Fe ... The partial electron yield method was used for the XAS measurements, where electrons with kinetic energies higher than 500 eV ... Photoemission electron microscopy showed that catalyst annealing at the conventional feeding temperature of 800°C caused excess ... Mayer, J. T., Diebold, U., Madey, T. E. & Garfunkel, E. (1995). J. Electron Spectrosc. Relat. Phenom. 73, 1-11. CrossRef CAS ...
IUCr) Overview of refinement procedures within REFMAC5: utilizing data from different sources
X-ray crystallography and electron cryo-microscopy (cryo-EM). Although ultimately all three methods result in an `atomic model ... In practice, the electron-density maps in such regions would be manually inspected in order to assess the reasons for such ... The corresponding electron spin gives rise to an average magnetic moment (the Curie spin) that may have different magnitudes ... The major modification was observed on the loop of CSD1 in contact with the RNA strand with weaker electron density (Fig. 4. ...
IUCr) The structure of tick-borne encephalitis virus determined at X-ray free-electron lasers. Simulations
The structure of tick-borne encephalitis virus determined at X-ray free-electron lasers. Simulations ... SPI using cryogenic electron microscopy (cryo-EM) makes it possible to reconstruct the structure of biological particles down ... Although electron ptychography SPI can now achieve a 0.2 Å resolution (Chen et al., 2020. ), SPI at XFEL facilities has not yet ... Imaging Electron. Phys. 185, 113-137. CrossRef Google Scholar. Allahgholi, A., Becker, J., Delfs, A., Dinapoli, R., Goettlicher ...
IUCr) Protein-lipid architecture of a cholinergic postsynaptic membrane
I am also very grateful to Shaoxia Chen, Giuseppe Cannone and Grigory Sharov for help with electron microscopy, and to Richard ... The strongly electron-scattering phospho-lipid headgroups give rise to bands of higher density (`tram tracks) on either side ... Micrographs were recorded in integrating mode on a Falcon 3 4096 pixel direct-electron detector after searching for straight ... The specimens were imaged with an FEI Titan Krios transmission electron microscope incorporating a 70 µm diameter objective ...
IUCr) REFMAC5 for the refinement of macromolecular crystal structures
For example, the simultaneous treatment of electron-microscopy (EM) and MX data could increase the reliability of EM models and ... This type of bulk-solvent model may result in smeared-out electron density that may reduce the height of electron density in ... and assume that if protein electron density is convoluted using the Gaussian kernel and multiplied by an appropriate scale ... However, in these cases the electron density becomes blurred, reflecting high mobility of the molecules or crystal disorder. ...
IUCr) Full elastic strain and stress tensor measurements from individual dislocation cells in copper through-Si vias
b) is a scanning electron microscopy image of a focused ion beam cross section of a randomly selected die. The Cu-TSVs are ... b) Microstructure of typical Cu-TSVs acquired using scanning electron microscopy of cross sections cut using focused ion beams. ... Electron Devices, 61, 2473-2479. Web of Science CrossRef CAS Google Scholar. Phan, T. Q., Lee, I.-F., Levine, L. E., Tischler, ...
IUCr) Evolution of the analytical scattering model of live Escherichia coli
... and are complementary to transmission electron microscopy or optical microscopy. Here we report differences between five E. ... Transmission electron microscopy (TEM) has been an indispensable tool to derive the cells ultrastructure, i.e. the few tens of ...
IUCr) A novel experimental approach for nanostructure analysis: simultaneous small-angle X-ray and neutron scattering
In contrast to analytical methods such as scanning or transmission electron microscopy (SEM/TEM), SAS offers a nondestructive ... In-situ Microscopy with Electrons, X-rays and Scanning Probes and the research unit FOR 1878 `Functional Molecular Structures ... bCenter for Nanoanalysis and Electron Microscopy (CENEM) and Interdisciplinary Center for Nanostructured Films (IZNF), ... However, X-rays interact prevalently with the electron shell of the atoms, while neutrons interact with their nuclei, and thus ...
International Tables for Crystallography) Thermal neutron detection
The Gd-foil film detector is one order of magnitude less efficient than the scintillator, but, as in electron microscopy, the ... In the case of direct collection of charges, the 25000 electrons corresponding to one neutron capture (primary electrons) are ... With proper design, the number of secondary electrons is proportional to the number of primary electrons. For cylindrical ... the new electrons liberated in the process being called secondary electrons. This phenomenon, gas multiplication, occurs in the ...
IUCr) IUCrJ launches electron crystallography section
Mauro Gemmi (Istituto Italiano di Tecnologia, Pontedera, Italy) has worked in several electron microscopy labs in Europe ( ... The development of new methods is central to this work, particularly using emerging technologies in cryo-electron microscopy, ... electron_cryst.html. We hope IUCrJ will become the natural home for your innovative research in electron crystallography and ... in particular scanning transmission electron microscopy (STEM) including 4D STEM diffraction-imaging techniques, Z-contrast ...
IUCr) Rapid sample delivery for megahertz serial crystallography at X-ray FELs
The resulting diffusion length [x = 2(Dt)1/2] for electron diffusion in time t = 1 µs is ∼140 nm. We chose PS I membrane ... The soft-X-ray-induced explosion of the liquid jet was observed by optical microscopy with short-pulse optical laser ... The pulse sequence in the latter case was created by injecting a pair of electron bunches into RF buckets of the accelerator ... Liquid microjets are a common means of delivering protein crystals to the focus of X-ray free-electron lasers (FELs) for serial ...
IUCr) Single-particle imaging without symmetry constraints at an X-ray free-electron laser
Single-particle imaging without symmetry constraints at an X-ray free-electron laser ... This is different from cryo-electron microscopy (Bai et al., 2015. ), where single biological particles have to be preserved at ... a)-(c) Isosurface at 10% of the maximum electron density. (d)-(f) Isosurface at 10%, 82% and 89% of the maximum electron ... XFEL: The European X-ray Free-Electron Laser. Technical Design Report 2006-097. Hamburg: DESY. Google Scholar. Altarelli, M., ...
IUCr) Megahertz-rate ultrafast X-ray scattering and holographic imaging at the European XFEL
Reconstructions of the magnetic domains using the HERALDO technique on (b) the synchrotron data and (d) the free-electron laser ... From magnetic force microscopy we observe approximately 200 nm-wide labyrinth magnetic domains at remanence. The holography ... The appearance, one decade ago, of X-ray free-electron lasers (XFELs) providing intense X-ray pulses with a high degree of ... and at the RESOXS endstation of the SEXTANTS beamline at Synchrotron SOLEIL, as well as by magnetic force microscopy. ...
International Tables for Crystallography) Macromolecular powder diffraction
7.1.4. Projections of the electron density in the ab plane for TEWL at room temperature (left) and low temperature (right) (p. ... 7.1.1. Optical-microscopy images of needle-shaped crystals of the nonstructural protein 3 (nsP3) macro domain of the Mayaro ... The electron-density map of HEWL (green) obtained from MIR data after density modification superimposed onto the known ...
IUCr) Higher resolution in cryo-EM by the combination of macromolecular prior knowledge and image-processing tools
Higher resolution in cryo-EM by the combination of macromolecular prior knowledge and image-processing tools
IUCr) Acta Crystallographica Section A Volume 66, Part 2, March 2010
Interpretation of angular symmetries in electron nanodiffraction patterns from thin amorphous specimens. A. C. Y. Liu, G. R. ... The scope of applications and advances, from microscopy to diffraction and spectroscopy, defines the new age of endeavour. ... Cover illustration: Recent advances in pulsed electron and X-ray sources make it now possible to obtain atomic level views of ... with examples of intramolecular electron transfer, low-to-high spin conversion and bond formation in metal-based molecular ...