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1.257 Aktuelle Fachpublikationen von Oxford University Press

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Detection of novel metabolite for roxadustat doping by global metabolomics

15.05.2018 | Saigusa D, Suzuki N, Matsumoto Y, et al., Journal of Biochemistry, 2018

J. Biochem. 2018; doi:10.1093/jb/mvy028

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Noise reduction in CCD measurements by improving the quality of dark-reference images

13.02.2018 | Heil T, Tatlock G., Journal of Electron Microscopy, 2018

Abstract This publication is a systematic investigation of the effect the improvement of dark-reference images has on the resulting bright-field images. For this, data were acquired with three different charge-coupled device cameras attached to two different transmission electron microscopes. ...

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Excitation of long-wavelength surface optical vibrational modes in films, cubes and film/cube composite system using an atom-sized electron beam

23.01.2018 | Lagos M, Trügler A, Amarasinghe V, et al., Journal of Electron Microscopy, 2018

Abstract Using spatially resolved Electron Energy-Loss Spectroscopy, we investigate the excitation of long-wavelength surface optical vibrational modes in elementary types of nanostructures: an amorphous SiO2 slab, an MgO cube, and in the composite cube/slab system. We find rich sets of optical ...

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Soft X-ray emission spectroscopy study of electronic structure of sodium borosilicide Na8B74.5Si17.5

23.01.2018 | Terauchi M, Morito H, Yamane H, et al., Journal of Electron Microscopy, 2018

Abstract Chemical bonding state of sodium borosilicide Na8B74.5Si17.5, which is a new member of B12-cluster materials, is investigated by soft X-ray emission spectroscopy. The material is composed of B12 cluster network and characteristic silicon chains of [–Si–(Si–Si)3–Si–] connected by sp3 ...

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Immune neutralization of the receptor for advanced glycation end products reduce liver oxidative damage induced by an acute systemic injection of lipopolysaccharide

22.01.2018 | Tiefensee Ribeiro C, Gasparotto J, Teixeira A, et al., Journal of Biochemistry, 2018

Abstract The receptor for advanced glycation end products (RAGE) is a multi-ligand receptor, which activation amplifies and perpetuates inflammatory reactions. RAGE activation also strongly stimulates the production of reactive oxygen species, leading an imbalance of redox cellular state. The ...

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Managing dose-, damage- and data-rates in multi-frame spectrum-imaging

11.01.2018 | Jones L, Varambhia A, Beanland R, et al., Journal of Electron Microscopy, 2018

Abstract As an instrument, the scanning transmission electron microscope is unique in being able to simultaneously explore both local structural and chemical variations in materials at the atomic scale. This is made possible as both types of data are acquired serially, originating simultaneously ...

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Two-dimensional Gaussian fitting for precise measurement of lattice constant deviation from a selected-area diffraction map

15.12.2017 | Bekarevich R, Mitsuishi K, Ohnishi T, et al., Journal of Electron Microscopy, 2017

Abstract Unlike X-ray diffraction or Raman techniques, which suffer from low spatial resolution, transmission electron microscopy can be used to obtain strain maps of nanoscaled materials and devices. Convergent-beam electron diffraction (CBED) and nanobeam electron diffraction (NBED) techniques ...

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Unraveling the fine-tuned lemon coloration of a pierid butterfly Catopsilia pomona

28.09.2017 | Mishra M, Choudhury A, Achary P, et al., Journal of Electron Microscopy, 2017

Abstract Butterflies wings possess different types of scales to perform diverse functions. Each scale has many nano and microstructures, which interferes with light, resulting in unique coloration for each butterfly. Besides coloration, the arrangement of scales further helps in giving better ...

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Structure of an innexin gap junction channel and cryo-EM sample preparation

21.09.2017 | Oshima A., Journal of Electron Microscopy, 2017

Abstract Gap junction channels are essential for mediating intercellular communication in most multicellular organisms. Two gene families encode gap junction channels, innexin and connexin. Although the sequence similarity between these two families based on bioinformatics is not conclusively ...

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EELS at very high energy losses

21.09.2017 | MacLaren I, Annand K, Black C, et al., Journal of Electron Microscopy, 2017

Abstract Electron energy-loss spectroscopy (EELS) has been investigated in the range from 2 to >10 keV using an optimized optical coupling of the microscope to the spectrometer to improve the high loss performance in EELS. It is found that excellent quality data can now be acquired up until about ...

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