As a unique structural characterization technique,anomalous small-angle X-ray scattering (ASAXS) isinvaluable for highlighting the nanoscale structural informationprovided by resonantly scattered atoms. In this paper,...As a unique structural characterization technique,anomalous small-angle X-ray scattering (ASAXS) isinvaluable for highlighting the nanoscale structural informationprovided by resonantly scattered atoms. In this paper, thetheory and advantages of ASAXS are first introduced. Then,the development of common methods for ASAXS data analysisis summarized, including the Stuhrmann method, the subtractionmethod, and the direct modeling method. Next, themain applications of the ASAXS technique in low-Z materials,nanocomposites, polyelectrolytes, polymer micelles, glass, andmetal catalysts are reviewed. Finally, the limitations and futuredirections of the ASAXS method are briefly discussed. Thispaper summarizes the latest advancements in ASAXS, facilitatinga deeper understanding and broader applications of theASAXS technique.展开更多
Additive manufacturing(AM),or 3D printing,has fundamentally reshaped part fabrication,transitioning from traditional subtractive methods toward incremental layer-by-layer deposition guided by digital models.This shift...Additive manufacturing(AM),or 3D printing,has fundamentally reshaped part fabrication,transitioning from traditional subtractive methods toward incremental layer-by-layer deposition guided by digital models.This shift offers significant advantages,including reduced material waste,geometric freedom,rapid prototyping,and customization.For structural composites-materials combining high-strength fibers within polymer matrices-AM presents remarkable potential for producing lightweight,high-performance components in aerospace,automotive,sports equipment,and renewable energy sectors.Despite considerable enthusiasm,practical implementation of composite AM remains limited.展开更多
The technique on computing the horizontal pressure gradient force(PGF)in RegCM2 is improved with the error subtraction method.Moreover,the regional climate in June of 1991 in China is simulated by employing the RegCM2...The technique on computing the horizontal pressure gradient force(PGF)in RegCM2 is improved with the error subtraction method.Moreover,the regional climate in June of 1991 in China is simulated by employing the RegCM2.Comparison with other schemes for computing the PGF shows that the error subtraction method can effectively reduce the error of the PGF,improve the simulation of winds and alleviate the spurious precipitation in steep topographic areas. Furthermore,the simulation of precipitation in other areas is in better accordance with the observation.展开更多
基金supported by the National Key R&D Program of China (2022YFA1603802 and 2017YFA0403001)the National Natural Science Foundation of China (12275300)+1 种基金the Innovation Program of the Institute of High Energy Physics,Chinese Academy of Sciences (2023000034)the Natural Science Foundation of Hebei Province (B2024203051)。
文摘As a unique structural characterization technique,anomalous small-angle X-ray scattering (ASAXS) isinvaluable for highlighting the nanoscale structural informationprovided by resonantly scattered atoms. In this paper, thetheory and advantages of ASAXS are first introduced. Then,the development of common methods for ASAXS data analysisis summarized, including the Stuhrmann method, the subtractionmethod, and the direct modeling method. Next, themain applications of the ASAXS technique in low-Z materials,nanocomposites, polyelectrolytes, polymer micelles, glass, andmetal catalysts are reviewed. Finally, the limitations and futuredirections of the ASAXS method are briefly discussed. Thispaper summarizes the latest advancements in ASAXS, facilitatinga deeper understanding and broader applications of theASAXS technique.
文摘Additive manufacturing(AM),or 3D printing,has fundamentally reshaped part fabrication,transitioning from traditional subtractive methods toward incremental layer-by-layer deposition guided by digital models.This shift offers significant advantages,including reduced material waste,geometric freedom,rapid prototyping,and customization.For structural composites-materials combining high-strength fibers within polymer matrices-AM presents remarkable potential for producing lightweight,high-performance components in aerospace,automotive,sports equipment,and renewable energy sectors.Despite considerable enthusiasm,practical implementation of composite AM remains limited.
基金Sponsored by the National Key Research Project of"the studies of short range climate prediction system of China"(96-908)
文摘The technique on computing the horizontal pressure gradient force(PGF)in RegCM2 is improved with the error subtraction method.Moreover,the regional climate in June of 1991 in China is simulated by employing the RegCM2.Comparison with other schemes for computing the PGF shows that the error subtraction method can effectively reduce the error of the PGF,improve the simulation of winds and alleviate the spurious precipitation in steep topographic areas. Furthermore,the simulation of precipitation in other areas is in better accordance with the observation.
