Results 101 to 110 of about 7,626 (235)

Isolation and Structural Characterization of Se‐Hügerschoff Intermediates Derived From 4‐Bromoaniline

Journal of Heterocyclic Chemistry, EarlyView.
Isolation and characterization of Se‐brominated Hügerschoff intermediates enable structural and mechanistic insight into seleno‐Hügerschoff cyclization to 2‐aminobenzoselenazoles. ABSTRACT A brominated intermediate within the Hügerschoff reaction has long been postulated but never directly observed.
Adam W. E. Stewart, Tom Fellows, Lucy Li, Craig J. Morton, Glen P. Carter, Jonathan M. White   +5 more
wiley   +1 more source

Macromolecular structure phasing by neutron anomalous diffraction. [PDF]

, 2016
In this report we show for the first time that neutron anomalous dispersion can be used in a practical manner to determine experimental phases of a protein crystal structure, providing a new tool for structural biologists.
Cuypers, MG, Forsyth, VT, Haertlein, M, Mason, SA, Mitchell, EP, Mossou, E   +5 more
core   +2 more sources

Influence of Heat Treatment and Scan Rotation on the Microstructure of Hot Work Tool Steel Manufactured using Laser Powder Bed Fusion

steel research international, EarlyView.
The study investigates the influence of heat treatment and scan rotation on the microstructure of a modified H13 tool steel manufactured using laser powder bed fusion. Key findings include the refinement of prior austenite grains (PAGs) due to recrystallization and carbide pinning, and the significant impact of scan rotation on the size distribution of
Negar Panahi, Fengxiang Lin, Christos Oikonomou, Mikael Grehk   +3 more
wiley   +1 more source

Integrating simultaneous interfacial shear rheology with neutron reflectometry for structural and dynamic analysis of fluid interfacial systems

Journal of Applied Crystallography, EarlyView.
We present a new setup at the FIGARO horizontal neutron reflectometer enabling simultaneous measurement of the structural and mechanical properties of liquid interfaces, combining neutron reflectometry with interfacial shear rheology.The study of the structure and mechanical properties of complex fluid interfaces has attracted growing interest in ...
Pablo Sánchez-Puga, Javier Tajuelo, Javier Carrascosa-Tejedor, Miguel Ángel Rubio, Philipp Gutfreund, Armando Maestro   +5 more
wiley   +1 more source

A new crystal form of penicillin acylase from Escherichia coli [PDF]

, 1997
A new crystal form of penicillin acylase (penicillin amidohydrolase, E.C. 3.5.1.11) from Escherichia coli W (ATCC 11105) is reported. The crystals were grown using a combination of hanging-drop and streak-seeding methods.
Brannigan, J.A., Done, S.H., McVey, C.E., Tolley, S.P., Wilson, K.S.   +4 more
core   +2 more sources

Mobile electromagnetic levitator for time‐resolved in situ X‐ray diffraction studies of high‐temperature phase transformations

Journal of Synchrotron Radiation, EarlyView.
A mobile electromagnetic levitator combined with time‐resolved synchrotron X‐ray diffraction enables in situ studies of high‐temperature phase transformations without container‐induced contamination and reveals the first direct observation of metastable phase formation in undercooled Fe–Co alloys.In situ observations of high‐temperature transformations,
Olga Shuleshova, Ivan Kaban, Steffen Ziller, Uwe Reinhold, Ann-Christin Dippel, Olof Gutowski, Martin von Zimmermann   +6 more
wiley   +1 more source

Coherent diffraction of single Rice Dwarf virus particles using hard X-rays at the Linac Coherent Light Source [PDF]

, 2016
Single particle diffractive imaging data from Rice Dwarf Virus (RDV) were recorded using the Coherent X-ray Imaging (CXI) instrument at the Linac Coherent Light Source (LCLS).
Andreasson, Jakob, Aquila, Andrew, Awel, Salah, Ayyer, Kartik, Barty, Anton, Bean, Richard J., Berntsen, Peter, Bielecki, Johan, Boutet, Sebastien, Bucher, Maximilian, Chapman, Henry N., Daurer, Benedikt J., DeMirci, Hasan, Elser, Veit, Fromme, Petra, Hajdu, Janos, Hantke, Max F., Higashiura, Akifumi, Hogue, Brenda G., Hosseinizadeh, Ahmad, Kim, Yoonhee, Kirian, Richard A., Lan, Ti-Yen, Larsson, Daniel S. D., Liu, Haiguang, Loh, N. Duane, Maia, Filipe R. N. C., Mancuso, Adrian P., Muhlig, Kerstin, Munke, Anna, Nakagawa, Atsushi, Nam, Daewoong, Nelson, Garrett, Nettelblad, Carl, Okamoto, Kenta, Ourmazd, Abbas, Reddy, Hemanth K. N., Rose, Max, Schwander, Peter, Seibert, M. Marvin, Sellberg, Jonas A., Sierra, Raymond G., Song, Changyong, Svenda, Martin, Timneanu, Nicusor, van der Schot, Gijs, Vartanyants, Ivan A., Westphal, Daniel, Wiedorn, Max O., Williams, Garth J., Xavier, Paulraj Lourdu, Yoon, Chun Hong, Zook, James   +52 more
core   +2 more sources

Integrated control of a nanoindenter and X‐ray nanodiffraction for automated in situ nanomechanical studies

Journal of Synchrotron Radiation, EarlyView.
This work presents a software‐level integration of nanoindenter control directly into a beamline control system, enabling fully synchronized and automated in situ experiments through unified, real‐time coordination of mechanical loading and X‐ray nanodiffraction measurements.X‐ray diffraction (XRD) combined with in situ mechanical testing is a powerful,
Anton Davydok, Otto Carlos Lippmann, Kritika Singh, Satishkumar Kulkarni, Christina Krywka   +4 more
wiley   +1 more source

Advancing macromolecular structure determination with microsecond X-ray pulses at a 4th generation synchrotron

Communications Chemistry
Serial macromolecular crystallography has become a powerful method to reveal room temperature structures of biological macromolecules and perform time-resolved studies.
Julien Orlans, Samuel L. Rose, Gavin Ferguson, Marcus Oscarsson, Alejandro Homs Puron, Antonia Beteva, Samuel Debionne, Pascal Theveneau, Nicolas Coquelle, Jerome Kieffer, Paolo Busca, Jeremy Sinoir, Victor Armijo, Marcos Lopez Marrero, Franck Felisaz, Gergely Papp, Herve Gonzalez, Hugo Caserotto, Fabien Dobias, Jonathan Gigmes, Guillaume Lebon, Shibom Basu, Daniele de Sanctis   +22 more
doaj   +1 more source

On-the-fly Segmentation Approaches for X-ray Diffraction Datasets for Metallic Glasses

, 2017
Investment in brighter sources and larger detectors has resulted in an explosive rise in the data collected at synchrotron facilities. Currently, human experts extract scientific information from these data, but they cannot keep pace with the rate of ...
Hattrick-Simpers, Jason, Mehta, Apurva, Ren, Fang, Williams, Travis   +3 more
core   +1 more source