Search Results - (Author, Cooperation:J. C. Spence)
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1W. Liu ; D. Wacker ; C. Gati ; G. W. Han ; D. James ; D. Wang ; G. Nelson ; U. Weierstall ; V. Katritch ; A. Barty ; N. A. Zatsepin ; D. Li ; M. Messerschmidt ; S. Boutet ; G. J. Williams ; J. E. Koglin ; M. M. Seibert ; C. Wang ; S. T. Shah ; S. Basu ; R. Fromme ; C. Kupitz ; K. N. Rendek ; I. Grotjohann ; P. Fromme ; R. A. Kirian ; K. R. Beyerlein ; T. A. White ; H. N. Chapman ; M. Caffrey ; J. C. Spence ; R. C. Stevens ; V. Cherezov
American Association for the Advancement of Science (AAAS)
Published 2013Staff ViewPublication Date: 2013-12-21Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Crystallography, X-Ray/*instrumentation/*methods ; Humans ; Lasers ; Protein Conformation ; Receptor, Serotonin, 5-HT2B/chemistry/radiation effects ; Receptors, G-Protein-Coupled/*chemistry/radiation effects ; Time FactorsPublished by: -
2L. Redecke ; K. Nass ; D. P. DePonte ; T. A. White ; D. Rehders ; A. Barty ; F. Stellato ; M. Liang ; T. R. Barends ; S. Boutet ; G. J. Williams ; M. Messerschmidt ; M. M. Seibert ; A. Aquila ; D. Arnlund ; S. Bajt ; T. Barth ; M. J. Bogan ; C. Caleman ; T. C. Chao ; R. B. Doak ; H. Fleckenstein ; M. Frank ; R. Fromme ; L. Galli ; I. Grotjohann ; M. S. Hunter ; L. C. Johansson ; S. Kassemeyer ; G. Katona ; R. A. Kirian ; R. Koopmann ; C. Kupitz ; L. Lomb ; A. V. Martin ; S. Mogk ; R. Neutze ; R. L. Shoeman ; J. Steinbrener ; N. Timneanu ; D. Wang ; U. Weierstall ; N. A. Zatsepin ; J. C. Spence ; P. Fromme ; I. Schlichting ; M. Duszenko ; C. Betzel ; H. N. Chapman
American Association for the Advancement of Science (AAAS)
Published 2012Staff ViewPublication Date: 2012-12-01Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Amino Acid Sequence ; Animals ; Catalytic Domain ; Cathepsin B/antagonists & inhibitors/*chemistry ; Crystallization ; Crystallography, X-Ray ; Enzyme Precursors/chemistry ; Glycosylation ; Models, Molecular ; Molecular Sequence Data ; Protein Conformation ; Protozoan Proteins/antagonists & inhibitors/*chemistry ; Sf9 Cells ; Spodoptera ; Trypanosoma brucei brucei/*enzymology ; X-RaysPublished by: -
3J. Tenboer ; S. Basu ; N. Zatsepin ; K. Pande ; D. Milathianaki ; M. Frank ; M. Hunter ; S. Boutet ; G. J. Williams ; J. E. Koglin ; D. Oberthuer ; M. Heymann ; C. Kupitz ; C. Conrad ; J. Coe ; S. Roy-Chowdhury ; U. Weierstall ; D. James ; D. Wang ; T. Grant ; A. Barty ; O. Yefanov ; J. Scales ; C. Gati ; C. Seuring ; V. Srajer ; R. Henning ; P. Schwander ; R. Fromme ; A. Ourmazd ; K. Moffat ; J. J. Van Thor ; J. C. Spence ; P. Fromme ; H. N. Chapman ; M. Schmidt
American Association for the Advancement of Science (AAAS)
Published 2014Staff ViewPublication Date: 2014-12-06Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Bacterial Proteins/chemistry/*ultrastructure ; Crystallography, X-Ray/*methods ; Photoreceptors, Microbial/chemistry/*ultrastructure ; Protein Conformation ; Time FactorsPublished by: -
4K. Pande ; C. D. Hutchison ; G. Groenhof ; A. Aquila ; J. S. Robinson ; J. Tenboer ; S. Basu ; S. Boutet ; D. P. DePonte ; M. Liang ; T. A. White ; N. A. Zatsepin ; O. Yefanov ; D. Morozov ; D. Oberthuer ; C. Gati ; G. Subramanian ; D. James ; Y. Zhao ; J. Koralek ; J. Brayshaw ; C. Kupitz ; C. Conrad ; S. Roy-Chowdhury ; J. D. Coe ; M. Metz ; P. L. Xavier ; T. D. Grant ; J. E. Koglin ; G. Ketawala ; R. Fromme ; V. Srajer ; R. Henning ; J. C. Spence ; A. Ourmazd ; P. Schwander ; U. Weierstall ; M. Frank ; P. Fromme ; A. Barty ; H. N. Chapman ; K. Moffat ; J. J. van Thor ; M. Schmidt
American Association for the Advancement of Science (AAAS)
Published 2016Staff ViewPublication Date: 2016-05-07Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
5S. Boutet ; L. Lomb ; G. J. Williams ; T. R. Barends ; A. Aquila ; R. B. Doak ; U. Weierstall ; D. P. DePonte ; J. Steinbrener ; R. L. Shoeman ; M. Messerschmidt ; A. Barty ; T. A. White ; S. Kassemeyer ; R. A. Kirian ; M. M. Seibert ; P. A. Montanez ; C. Kenney ; R. Herbst ; P. Hart ; J. Pines ; G. Haller ; S. M. Gruner ; H. T. Philipp ; M. W. Tate ; M. Hromalik ; L. J. Koerner ; N. van Bakel ; J. Morse ; W. Ghonsalves ; D. Arnlund ; M. J. Bogan ; C. Caleman ; R. Fromme ; C. Y. Hampton ; M. S. Hunter ; L. C. Johansson ; G. Katona ; C. Kupitz ; M. Liang ; A. V. Martin ; K. Nass ; L. Redecke ; F. Stellato ; N. Timneanu ; D. Wang ; N. A. Zatsepin ; D. Schafer ; J. Defever ; R. Neutze ; P. Fromme ; J. C. Spence ; H. N. Chapman ; I. Schlichting
American Association for the Advancement of Science (AAAS)
Published 2012Staff ViewPublication Date: 2012-06-02Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; Crystallography, X-Ray/*methods ; Lasers ; Muramidase/chemistry/radiation effects ; *Protein ConformationPublished by: -
6Y. Kang ; X. E. Zhou ; X. Gao ; Y. He ; W. Liu ; A. Ishchenko ; A. Barty ; T. A. White ; O. Yefanov ; G. W. Han ; Q. Xu ; P. W. de Waal ; J. Ke ; M. H. Tan ; C. Zhang ; A. Moeller ; G. M. West ; B. D. Pascal ; N. Van Eps ; L. N. Caro ; S. A. Vishnivetskiy ; R. J. Lee ; K. M. Suino-Powell ; X. Gu ; K. Pal ; J. Ma ; X. Zhi ; S. Boutet ; G. J. Williams ; M. Messerschmidt ; C. Gati ; N. A. Zatsepin ; D. Wang ; D. James ; S. Basu ; S. Roy-Chowdhury ; C. E. Conrad ; J. Coe ; H. Liu ; S. Lisova ; C. Kupitz ; I. Grotjohann ; R. Fromme ; Y. Jiang ; M. Tan ; H. Yang ; J. Li ; M. Wang ; Z. Zheng ; D. Li ; N. Howe ; Y. Zhao ; J. Standfuss ; K. Diederichs ; Y. Dong ; C. S. Potter ; B. Carragher ; M. Caffrey ; H. Jiang ; H. N. Chapman ; J. C. Spence ; P. Fromme ; U. Weierstall ; O. P. Ernst ; V. Katritch ; V. V. Gurevich ; P. R. Griffin ; W. L. Hubbell ; R. C. Stevens ; V. Cherezov ; K. Melcher ; H. E. Xu
Nature Publishing Group (NPG)
Published 2015Staff ViewPublication Date: 2015-07-23Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; Arrestin/*chemistry/*metabolism ; Binding Sites ; Crystallography, X-Ray ; Disulfides/chemistry/metabolism ; Humans ; Lasers ; Mice ; Models, Molecular ; Multiprotein Complexes/biosynthesis/chemistry/metabolism ; Protein Binding ; Reproducibility of Results ; Rhodopsin/*chemistry/*metabolism ; Signal Transduction ; X-RaysPublished by: -
7K. Ayyer ; O. M. Yefanov ; D. Oberthur ; S. Roy-Chowdhury ; L. Galli ; V. Mariani ; S. Basu ; J. Coe ; C. E. Conrad ; R. Fromme ; A. Schaffer ; K. Dorner ; D. James ; C. Kupitz ; M. Metz ; G. Nelson ; P. L. Xavier ; K. R. Beyerlein ; M. Schmidt ; I. Sarrou ; J. C. Spence ; U. Weierstall ; T. A. White ; J. H. Yang ; Y. Zhao ; M. Liang ; A. Aquila ; M. S. Hunter ; J. S. Robinson ; J. E. Koglin ; S. Boutet ; P. Fromme ; A. Barty ; H. N. Chapman
Nature Publishing Group (NPG)
Published 2016Staff ViewPublication Date: 2016-02-13Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Crystallization ; Crystallography, X-Ray/*methods ; Models, Molecular ; Photosystem II Protein Complex/*chemistryPublished by: -
8C. Kupitz ; S. Basu ; I. Grotjohann ; R. Fromme ; N. A. Zatsepin ; K. N. Rendek ; M. S. Hunter ; R. L. Shoeman ; T. A. White ; D. Wang ; D. James ; J. H. Yang ; D. E. Cobb ; B. Reeder ; R. G. Sierra ; H. Liu ; A. Barty ; A. L. Aquila ; D. Deponte ; R. A. Kirian ; S. Bari ; J. J. Bergkamp ; K. R. Beyerlein ; M. J. Bogan ; C. Caleman ; T. C. Chao ; C. E. Conrad ; K. M. Davis ; H. Fleckenstein ; L. Galli ; S. P. Hau-Riege ; S. Kassemeyer ; H. Laksmono ; M. Liang ; L. Lomb ; S. Marchesini ; A. V. Martin ; M. Messerschmidt ; D. Milathianaki ; K. Nass ; A. Ros ; S. Roy-Chowdhury ; K. Schmidt ; M. Seibert ; J. Steinbrener ; F. Stellato ; L. Yan ; C. Yoon ; T. A. Moore ; A. L. Moore ; Y. Pushkar ; G. J. Williams ; S. Boutet ; R. B. Doak ; U. Weierstall ; M. Frank ; H. N. Chapman ; J. C. Spence ; P. Fromme
Nature Publishing Group (NPG)
Published 2014Staff ViewPublication Date: 2014-07-22Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: *Crystallography, X-Ray ; Cyanobacteria/*chemistry ; *Models, Molecular ; Photosystem II Protein Complex/*chemistry ; Protein Structure, TertiaryPublished by: -
9H. N. Chapman ; P. Fromme ; A. Barty ; T. A. White ; R. A. Kirian ; A. Aquila ; M. S. Hunter ; J. Schulz ; D. P. DePonte ; U. Weierstall ; R. B. Doak ; F. R. Maia ; A. V. Martin ; I. Schlichting ; L. Lomb ; N. Coppola ; R. L. Shoeman ; S. W. Epp ; R. Hartmann ; D. Rolles ; A. Rudenko ; L. Foucar ; N. Kimmel ; G. Weidenspointner ; P. Holl ; M. Liang ; M. Barthelmess ; C. Caleman ; S. Boutet ; M. J. Bogan ; J. Krzywinski ; C. Bostedt ; S. Bajt ; L. Gumprecht ; B. Rudek ; B. Erk ; C. Schmidt ; A. Homke ; C. Reich ; D. Pietschner ; L. Struder ; G. Hauser ; H. Gorke ; J. Ullrich ; S. Herrmann ; G. Schaller ; F. Schopper ; H. Soltau ; K. U. Kuhnel ; M. Messerschmidt ; J. D. Bozek ; S. P. Hau-Riege ; M. Frank ; C. Y. Hampton ; R. G. Sierra ; D. Starodub ; G. J. Williams ; J. Hajdu ; N. Timneanu ; M. M. Seibert ; J. Andreasson ; A. Rocker ; O. Jonsson ; M. Svenda ; S. Stern ; K. Nass ; R. Andritschke ; C. D. Schroter ; F. Krasniqi ; M. Bott ; K. E. Schmidt ; X. Wang ; I. Grotjohann ; J. M. Holton ; T. R. Barends ; R. Neutze ; S. Marchesini ; R. Fromme ; S. Schorb ; D. Rupp ; M. Adolph ; T. Gorkhover ; I. Andersson ; H. Hirsemann ; G. Potdevin ; H. Graafsma ; B. Nilsson ; J. C. Spence
Nature Publishing Group (NPG)
Published 2011Staff ViewPublication Date: 2011-02-05Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Crystallography, X-Ray/instrumentation/*methods ; Lasers ; Models, Molecular ; Nanoparticles/*chemistry ; Nanotechnology/instrumentation/*methods ; Photosystem I Protein Complex/*chemistry ; Protein Conformation ; Time Factors ; X-RaysPublished by: -
10M. M. Seibert ; T. Ekeberg ; F. R. Maia ; M. Svenda ; J. Andreasson ; O. Jonsson ; D. Odic ; B. Iwan ; A. Rocker ; D. Westphal ; M. Hantke ; D. P. DePonte ; A. Barty ; J. Schulz ; L. Gumprecht ; N. Coppola ; A. Aquila ; M. Liang ; T. A. White ; A. Martin ; C. Caleman ; S. Stern ; C. Abergel ; V. Seltzer ; J. M. Claverie ; C. Bostedt ; J. D. Bozek ; S. Boutet ; A. A. Miahnahri ; M. Messerschmidt ; J. Krzywinski ; G. Williams ; K. O. Hodgson ; M. J. Bogan ; C. Y. Hampton ; R. G. Sierra ; D. Starodub ; I. Andersson ; S. Bajt ; M. Barthelmess ; J. C. Spence ; P. Fromme ; U. Weierstall ; R. Kirian ; M. Hunter ; R. B. Doak ; S. Marchesini ; S. P. Hau-Riege ; M. Frank ; R. L. Shoeman ; L. Lomb ; S. W. Epp ; R. Hartmann ; D. Rolles ; A. Rudenko ; C. Schmidt ; L. Foucar ; N. Kimmel ; P. Holl ; B. Rudek ; B. Erk ; A. Homke ; C. Reich ; D. Pietschner ; G. Weidenspointner ; L. Struder ; G. Hauser ; H. Gorke ; J. Ullrich ; I. Schlichting ; S. Herrmann ; G. Schaller ; F. Schopper ; H. Soltau ; K. U. Kuhnel ; R. Andritschke ; C. D. Schroter ; F. Krasniqi ; M. Bott ; S. Schorb ; D. Rupp ; M. Adolph ; T. Gorkhover ; H. Hirsemann ; G. Potdevin ; H. Graafsma ; B. Nilsson ; H. N. Chapman ; J. Hajdu
Nature Publishing Group (NPG)
Published 2011Staff ViewPublication Date: 2011-02-05Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Electrons ; Hot Temperature ; Lasers ; Mimiviridae/*chemistry ; Photons ; Time Factors ; X-Ray Diffraction/*instrumentation/*methods ; X-RaysPublished by: -
11Staff View
Publication Date: 2018-04-20Publisher: International Union of Crystallography (IUCr)Electronic ISSN: 2052-2525Topics: GeosciencesPhysicsKeywords: X-ray lasersXFELsprotein dynamicsstructural biologyPublished by: -
12Scheinfein, M. R. ; Qian, W. ; Spence, J. C. H.
[S.l.] : American Institute of Physics (AIP)
Published 1993Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: The electron optical properties of nanometer sized field-emission cathodes are examined for suitability as electron sources for low-voltage scanning electron microscopy, low-voltage transmission point projection microscopy, and low-voltage transmission and reflection electron holography. First-order electron optical properties, aperture and chromatic aberrations, and source coherence are computed using an all-orders numerical method, and compared with analytically computed properties where possible. The electron optical properties of planar emitters, conventional field-emission tips, and new nanotip structures are compared in the absence of space-charge effects. It is found that the spherical and chromatic aberrations of nanotips are dominated by their base structures and that beams produced by nanotips can be considered as totally coherent.Type of Medium: Electronic ResourceURL: -
13Qian, W. ; Scheinfein, M. R. ; Spence, J. C. H.
[S.l.] : American Institute of Physics (AIP)
Published 1993Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: The brightness of nanometer-sized field-emission-electron sources have been measured experimentally. Ultrasharp tungsten (111) single-crystal tips were fabricated in situ using Ne sputtering and field evaporation, and monitored using field ion microscopy. The average brightness of single-atom-terminated nanotips was found to be 3.3×108 A cm−2 sr−1 at 470 V, or 7.7×1010 A cm−2 sr−1 when extrapolated to 100 kV. These results show an improvement of about two orders of magnitude in source brightness over existing cold field-emission-electron sources, and produce a beam with greater particle flux per unit energy than those obtainable using current synchrotron/wiggler/undulator devices.Type of Medium: Electronic ResourceURL: -
14Transmission electron microscopy cathodoluminescence investigation of anomalous Sn diffusion in GaAsGraham, R. J. ; Spence, J. C. H. ; Roedel, R. J.
[S.l.] : American Institute of Physics (AIP)
Published 1986Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: Zn-doped GaAs diffused with Sn has been examined in cross section by transmission electron microscopy (TEM) and high-resolution cathodoluminescence (CL) in an attempt to account for the penetration of Sn into this material but the apparent lack of any electricity activity. TEM shows that small Sn-rich precipitates are present in the GaAs near the surface. CL indicates that some of the Sn dopes of GaAs n-type, but additionally that new emissions in the spectra at ∼1.44 and ∼1.455 eV are seen to originate from the diffused region. A possible explanation for the lack of electrical activity of the Sn is discussed in terms of these results and may lie in the formation of a compensating Sn-related complex or an accumulation of Zn in the diffused region.Type of Medium: Electronic ResourceURL: -
15Kim, Y. ; Spence, J. C. H. ; Long, N. ; Bergholz, W. ; O'Keeffe, M.
[S.l.] : American Institute of Physics (AIP)
Published 1987Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: Coherent electron microdiffraction patterns have been obtained from a new crystalline precipitate found in silicon wafers annealed at 635 °C for 256 h. On the basis of the experimental evidence presented, the most likely structure is that of keatite (SiO2, tetragonal). The implications for the study of oxygen precipitation in silicon are discussed.Type of Medium: Electronic ResourceURL: -
16Staff View
ISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: A parallel detection system for electrons in the 10–800-kV energy range is described. The design is based on a 576×382 pixel charge-coupled device array operating at liquid-nitrogen temperature. This is coupled by fiber optics to a single-crystal YAG screen, which serves as the primary detection element. The performance of the system for quantitative electron diffraction and imaging studies is described. The system will record a maximum count of 16 000 per pixel with low noise at a frame rate of 2.5 frames per second.Type of Medium: Electronic ResourceURL: -
17Spence, J. C. H. ; Cowley, J. M. ; Zuo, J. M.
Woodbury, NY : American Institute of Physics (AIP)
Published 1993Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsType of Medium: Electronic ResourceURL: -
18Qian, W. ; Scheinfein, M. R. ; Spence, J. C. H.
Woodbury, NY : American Institute of Physics (AIP)
Published 1993Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: Electron optical properties of nanometer diameter field emission electron sources have been calculated using ray tracing methods. The spherical and chromatic aberration coefficients referred to the object plane were found to be on the order of angstroms. The effective source size was estimated to be much smaller than that in a conventional field emission source. The ultimate resolution of a lensless point projection electron microscope, which depends on both the source aberrations and the effective source size, were also in the order of angstroms. The beam angular half-width on the anode was 7.4° relative to the virtual image position on the optic axis, and the corresponding coherence width was 9.6°, suggesting that the source is totally coherent.Type of Medium: Electronic ResourceURL: -
19Haussühl, S. ; Wedepohl, K. H. ; Saalfeld, H. ; Petrascheck, W. E. ; Spence, J. C. H. ; Donnay, Gabrielle ; Preisinger, A.
Springer
Published 1978Staff ViewISSN: 1438-1168Source: Springer Online Journal Archives 1860-2000Topics: GeosciencesType of Medium: Electronic ResourceURL: -
20Staff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] We study the lattice imaging of YBa2Cu3O7 at 400 kV and discuss the oxygen arrangement in the basal plane. Similar arguments apply to the oxygen vacancy at the Y plane and to imaging at lower accelerating voltages. We assume that no systematic changes occur in the metal-frame stoichiometry with ...Type of Medium: Electronic ResourceURL: