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作者:Martin Krenkel , Mareike Toepperwien , Frauke Alves ...
来源:[J].Acta Crystallogr A Found Adv, 2017, Vol.73 (Pt 4), pp.282-292IUCr
摘要:X-ray tomography at the level of single biological cells is possible in a low-dose regime, based on full-field holographic recordings, with phase contrast originating from free-space wave propagation. Building upon recent progress in cellular imaging based on the illumination by ...
作者:Giorgio Margaritondo , Johann Rafelski
来源:[J].J Synchrotron Rad, 2017, Vol.24 (Pt 4), pp.898-901IUCr
摘要:Special relativity (SR) determines the properties of synchrotron radiation, but the corresponding mechanisms are frequently misunderstood. Time dilation is often invoked among the causes, whereas its role would violate the principles of SR. Here it is shown that the correct expla...
作者:Hans Grimmer
来源:[J].Acta Crystallogr A Found Adv, 2017, Vol.73 (Pt 4), pp.333-345IUCr
摘要:The forms of the tensors describing thermoelectric transport properties in magnetically ordered crystals are given for frequently used orientations of the 122 space-time point groups up to second order in an applied magnetic field. It is shown which forms are interchanged fo...
作者:Edwin Rodriguez-Horta , Ernesto Estevez-Rams , Reinhard Neder ...
来源:[J].Acta Crystallogr A Found Adv, 2017, Vol.73 (Pt 4), pp.357-369IUCr
摘要:The stacking problem is approached by computational mechanics, using an Ising next-nearest-neighbour model. Computational mechanics allows one to treat the stacking arrangement as an information processing system in the light of a symbol-generating process. A general method for s...
作者:Amanda M. Holland , Allen G. Oliver , Vlad M. Iluc
来源:[J].Acta Crystallogr C Struct Chem, 2017, Vol.73 (Pt 7), pp.569-574IUCr
摘要:The structure of a pincer ligand consists of a backbone and two `arms' which typically contain a P or N atom. They are tridentate ligands that coordinate to a metal center in a meridional configuration. A series of three iron complexes containing the pyrrole-based PNP pincer liga...
作者:Mohammad Izadifar , Paul Babyn , Dean Chapman ...
来源:[J].J Synchrotron Rad, 2017, Vol.24 (Pt 4), pp.842-853IUCr
摘要:Hydrogel-based cardiac tissue engineering offers great promise for myocardial infarction repair. The ability to visualize engineered systems in vivo in animal models is desired to monitor the performance of cardiac constructs. However, due to the low density and weak X-ray attenu...
作者:John M. Moore , Jasmine M. Hall , Wendell L. Dilling ...
来源:[J].Acta Crystallogr C Struct Chem, 2017, Vol.73 (Pt 7), pp.531-535IUCr
摘要:3-Aminocarbonyl-1-benzylpyridinium bromide (N-benzylnicotinamide, BNA), C 13 H 13 N 2 O+·Br, (I), and 1-benzyl-1,4-dihydropyridine-3-carboxamide (N-benzyl-1,4-dihydronicotinamide, rBNA), C 13 H 14 N 2 O, (II), are valuable model compounds used ...
作者:David Laundy , Kawal Sawhney , Vishal Dhamgaye
来源:[J].J Synchrotron Rad, 2017, Vol.24 (Pt 4), pp.744-749IUCr
摘要:X-ray mirrors are widely used at synchrotron radiation sources for focusing X-rays into focal spots of size less than 1 µm. The ability of the beamline optics to change the size of this spot over a range up to tens of micrometres can be an advantage for many exp...
作者:G. M. Hansford , S. M. R. Turner , P. Degryse ...
来源:[J].Acta Crystallogr A Found Adv, 2017, Vol.73 (Pt 4), pp.293-311IUCr
摘要:It is shown that energy-dispersive X-ray diffraction (EDXRD) implemented in a back-reflection geometry is extremely insensitive to sample morphology and positioning even in a high-resolution configuration. This technique allows high-quality X-ray diffraction analysis of samples t...

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