نتایج جستجو برای: electron diffraction

تعداد نتایج: 350333  

Journal: :Acta Crystallographica 2021

2013
Dan Shi Brent L Nannenga Matthew G Iadanza Tamir Gonen

We demonstrate that it is feasible to determine high-resolution protein structures by electron crystallography of three-dimensional crystals in an electron cryo-microscope (CryoEM). Lysozyme microcrystals were frozen on an electron microscopy grid, and electron diffraction data collected to 1.7 Å resolution. We developed a data collection protocol to collect a full-tilt series in electron diffr...

Journal: :journal of the iranian chemical research 0
mahdi hajivaliei department of physics, bu-ali sina university, hamedan, iran majid lashkanpour department of physics, bu-ali sina university, hamedan, iran

a simple, inexpensive and one-step synthesis route of ag-tio2 nanoparticles by arc discharge method isreported. the resulting nanoparticles were characterized using x-ray diffraction and scanning electronmicroscopy. x-ray diffraction patterns demonstrate dominance of rutile to anatase phase in tio2 andformation of silver metal on tio2 after arc discharge process. scanning electron microscopy im...

Journal: :Acta crystallographica Section B, Structural science, crystal engineering and materials 2015
Dmitry Batuk Maria Batuk Artem M Abakumov Joke Hadermann

The crystal structure solution of modulated compounds is often very challenging, even using the well established methodology of single-crystal X-ray crystallography. This task becomes even more difficult for materials that cannot be prepared in a single-crystal form, so that only polycrystalline powders are available. This paper illustrates that the combined application of transmission electron...

Journal: :The Journal of the Society of Chemical Industry, Japan 1952

Journal: :Proceedings of the National Academy of Sciences 2010

B. Sathyaseelan K. Sivakumar, S. Sambasivam T. Alagesan

Nanocrystalline particles of Cerium Oxide (CeO2) have been prepared by the chemical precipitation method using Cerium nitrate and Urea with a molar ratio of 1:2. The results revealed that the formation of CeO2 fine particles is influenced by molar ratio of metal nitrates to fuel. Well faceted CeO2 nanoparticles, were synthesized by thermal-assisted dissociation ...

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