| 释义 |
Definition of X-ray diffraction in US English: X-ray diffractionnoun The scattering of X-rays by the regularly spaced atoms of a crystal, useful in obtaining information about the structure of the crystal. Example sentencesExamples - Recently, the 3-D structure of the E. coli enzyme has been determined by X-ray diffraction thereby making clear the topography of active and inhibitor sites as well as the mechanism of inhibition.
- Work towards the elucidation of LeOPR structure by X-ray diffraction is in progress (A Schaller, personal communication) and will yield an even better understanding of the relationship between yeast and plant OYEs.
- Prior to the discovery of X-ray diffraction in 1912, it was virtually impossible to prove that any microscopic grit produced contained diamond.
- So far, a number of AAMYs from different species have been crystallized and analyzed by X-ray diffraction.
- Several methods have been used to crystallize the adduct: one crystal of a size suitable for single-crystal X-ray diffraction was obtained only by diffusion of n-hexane into a chloroform solution of the adduct.
- Mineral identification was made using petrographic and stereo-zoom microscopic methods, and additionally by using powder X-ray diffraction and energy-dispersive analysis on the scanning electron microscope.
- All crystals were prepared and X-ray diffraction data collected at 110 K as described.
- Scientists soon learned that they could use X-ray diffraction to learn how atoms and molecules were arranged in crystals.
- The pattern of X-ray diffraction reveals the three-dimensional structure of the protein.
- There was fair agreement between qualitative mineral content determined by X-ray diffraction and mineral content calculated from chemical results.
- Polarized light microscopy and X-ray diffraction have been used to investigate the orientation of cellulose microfibrils in the cell walls and this can be used to explain differences in mechanical behaviour.
- A materials analyst can determine what elements are present by using a scanning electron microscope, and can identify the reaction products by using X-ray diffraction.
- A US team has recently discovered a new antitumor agent in one of these marine bacteria and by exploiting X-ray diffraction and spectroscopy have determined its precise structure, offering a new target for synthetic chemists to focus on.
- An examination by X-ray diffraction revealed that the acicular inclusions were indeed beryl, an uncommon mineral from the area.
- Current methodology restricts the probe to looking at only the amorphous regions of the polymer, but it ‘complements techniques such as X-ray diffraction which look at only the crystalline region of the samples’, Gleason says.
- But these crystals did not give regular X-ray diffraction patterns.
- Several different mineral species in the cavities have been identified by X-ray diffraction, scanning electron microscopy, and chemical EDS analysis.
- To better understand how lanthanum improved the catalyst, the researchers used X-ray diffraction and other structural analyses to characterize its surface.
- Analysis was made by X-ray diffraction at the University of Nevada, Reno.
- In contrast, the most utilized tool for the characterization of a mineral's crystal structure is X-ray diffraction.
Definition of X-ray diffraction in US English: X-ray diffractionnoun The scattering of X-rays by the regularly spaced atoms of a crystal, useful in obtaining information about the structure of the crystal. Example sentencesExamples - Several methods have been used to crystallize the adduct: one crystal of a size suitable for single-crystal X-ray diffraction was obtained only by diffusion of n-hexane into a chloroform solution of the adduct.
- In contrast, the most utilized tool for the characterization of a mineral's crystal structure is X-ray diffraction.
- Recently, the 3-D structure of the E. coli enzyme has been determined by X-ray diffraction thereby making clear the topography of active and inhibitor sites as well as the mechanism of inhibition.
- Mineral identification was made using petrographic and stereo-zoom microscopic methods, and additionally by using powder X-ray diffraction and energy-dispersive analysis on the scanning electron microscope.
- The pattern of X-ray diffraction reveals the three-dimensional structure of the protein.
- Analysis was made by X-ray diffraction at the University of Nevada, Reno.
- But these crystals did not give regular X-ray diffraction patterns.
- To better understand how lanthanum improved the catalyst, the researchers used X-ray diffraction and other structural analyses to characterize its surface.
- An examination by X-ray diffraction revealed that the acicular inclusions were indeed beryl, an uncommon mineral from the area.
- So far, a number of AAMYs from different species have been crystallized and analyzed by X-ray diffraction.
- A US team has recently discovered a new antitumor agent in one of these marine bacteria and by exploiting X-ray diffraction and spectroscopy have determined its precise structure, offering a new target for synthetic chemists to focus on.
- All crystals were prepared and X-ray diffraction data collected at 110 K as described.
- Prior to the discovery of X-ray diffraction in 1912, it was virtually impossible to prove that any microscopic grit produced contained diamond.
- A materials analyst can determine what elements are present by using a scanning electron microscope, and can identify the reaction products by using X-ray diffraction.
- Scientists soon learned that they could use X-ray diffraction to learn how atoms and molecules were arranged in crystals.
- Polarized light microscopy and X-ray diffraction have been used to investigate the orientation of cellulose microfibrils in the cell walls and this can be used to explain differences in mechanical behaviour.
- Current methodology restricts the probe to looking at only the amorphous regions of the polymer, but it ‘complements techniques such as X-ray diffraction which look at only the crystalline region of the samples’, Gleason says.
- Work towards the elucidation of LeOPR structure by X-ray diffraction is in progress (A Schaller, personal communication) and will yield an even better understanding of the relationship between yeast and plant OYEs.
- Several different mineral species in the cavities have been identified by X-ray diffraction, scanning electron microscopy, and chemical EDS analysis.
- There was fair agreement between qualitative mineral content determined by X-ray diffraction and mineral content calculated from chemical results.
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