Science Highlights----上海光源（英文版）

Research

Home ResearchScience Highlights

Science Highlights

Visualization and Quantitative Profiling of Mixing and Segregation of Granules Using Synchrotron Radiation X-ray Microtomography and Three Dimensional Reconstruction

Tomographic imaging techniques have great potential for improving understanding of the dynamics of granular materials during manufacturing, handling, and storage. In this study, the synchrotron radiation X-ray computed microtomography (SR-μCT) was used non-invasively to monitor blend homogeneity of binary mixtures. 01-03-2013
　　Keywords: Mixing; Segregation; Synchrotron radiation X-ray computed microtomography; Three dimensional
　　reconstruction; Frequency distribution; Mixing index
　　Tomographic imaging techniques have great potential for improving understanding of the dynamics of granular materials during manufacturing, handling, and storage. In this study, the synchrotron radiation X-ray computed microtomography (SR-μCT) was used non-invasively to monitor blend homogeneity of binary mixtures....

03 01 , 2013
A “Smart” Hollandite DeNOx Catalyst: Self-Protection against Alkali Poisoning

Banish the villains to their own realm: Biomass has gained widespread attention as a renewable energy source. However, commercial catalysts used in power plants (co-)fuelled by biomass are deactivated by the alkali-rich flue gas.
　　25-01-2013
　　Keywords: alkali metals; biomass; catalytically active sites; heterogeneous catalysis; manganese oxide
　　Banish the villains to their own realm: Biomass has gained widespread attention as a renewable energy
　　source. However, commercial catalysts used in power plants (co-)fuelled by biomass are deactivated by the
　　alkali-rich flue gas (see graph, black line). In contrast, one of two types of active sites in a promising alkali-
　　resistant hollandite catalyst traps...

01 25 , 2013
Structural Insight into the Type-II Mitochondrial NADH Dehydrogenases

The single-component type-IINADHdehydrogenases (NDH-2s) serveas alternatives to the multisubunit respiratory complex I (type-INADH dehydrogenase (NDH-1), also called NADH: ubiquinone oxidoreductase;EC 1.6.5.3) in catalysing electron transfer from NADH to ubiquinone in themitochondrial respiratory chain. 26-10-2012
　　The single-component type-IINADH dehydrogenases (NDH-2s) serveas alternatives to the multisubunit respiratory complex I (type-INADH dehydrogenase (NDH-1), also called NADH:ubiquinoneoxidoreductase;EC 1.6.5.3) in catalysing electron transfer from NADH to ubiquinone in the mitochondrial respiratory chain. The east NDH-2(Ndi1) oxidizes NADH on the matrix side and reduces ubiquinone tomaintain mitochondrial NADH/NAD1 homeostasis. Ndi1 is a potential therapeutic agent for human dise...

10 26 , 2012
Crystal Structure of a Bacterial Homologue of Glucose Transporters GLUT1–4

Glucose transporters are essential for metabolism of glucose in cells of diverse organisms from microbes to humans, exemplified by the disease-related human proteins GLUT1, 2, 3 and 4. Despite rigorous efforts, the structural information for GLUT1–4 or their homologues remains largely unknown. 26-10-2012
　　Glucose transporters are essential for metabolism of glucose in cells of diverse organisms from microbes to humans,
　　exemplified by the disease-related human proteins GLUT1, 2, 3 and 4. Despite rigorous efforts, the structural
　　information for GLUT1–4 or their homologues remains largely unknown. Nieng Yan group of Tsinghua University
　　reported three related crystal structures of XylE, an Escherichia coli homologue of GLUT1–4, in complex with
　　D-xylose, D-glucose a...

10 26 , 2012
Chitin-Induced Dimerization Activates a Plant Immune Receptor

Pattern recognition receptors confer plant resistance to pathogen infection by recognizing the conserved pathogen-associated molecular patterns. The cell surface receptor chitin elicitor receptor kinase 1 of Arabidopsis (AtCERK1) directly binds chitin through its lysine motif (LysM)–containing ectodomain (AtCERK1-ECD) to activate immune responses. 29-06-2012
　　Pattern recognition receptors confer plant resistance to pathogen infection by recognizing the conserved pathogen-
　　associated molecular patterns. The cell surface receptor chitin elicitor receptor kinase 1 of Arabidopsis (AtCERK1)
　　directly binds chitin through its lysine motif (LysM)–containing ectodomain (AtCERK1-ECD) to activate immune
　　responses. The crystal structure that we solved of an AtCERK1-ECD complexed with a chitin pentamer reveals that
　　their interac...

06 29 , 2012
Research on the Production Process of Chinese Early Brass

There are two main viewpoints on the origin of metallurgy in China: exotic and indigenous. Under the guidance of Prof. Changsui Wang, Dr. Xiaopan Fan of GUCAS proved the brass unearthed at Jiangzhai site(4700-400BC,the earliest copper-based alloy excavated to date in China) was produced by a solid-state reduction process through a series of simulating experiments and analysis of μ-X-ray fluorescence at SSRF. 04-06-2012
　　There are two main viewpoints on the origin of metallurgy in China: exotic and indigenous. Under the guidance of
　　Prof. Changsui Wang, Dr. Xiaopan Fan of GUCAS proved the brass unearthed at Jiangzhai site(4700-400BC,
　　the earliest copper-based alloy excavated to date in China) was produced by a solid-state reduction process
　　through a series of simulating experiments and analysis of µ-X-ray fluorescence at SSRF. It is interesting that the
　　date of the earliest copp...

06 04 , 2012

Home prev 678 next End

more