Mechanisms of nucleation have been debated for more than a century, despite successes of classical nucleation theory. The nucleation process has been recently argued as involving a nonclassical mechanism (the "two-step" mechanism) in which an intermediate step occurs before the formation of a nascent ordered phase. However, a thorough understanding...
Mechanisms of nucleation have been debated for more than a century, despite successes of classical nucleation theory. The nucleation process has been recently argued as involving a nonclassical mechanism (the "two-step" mechanism) in which an intermediate step occurs before the formation of a nascent ordered phase. However, a thorough understanding...
This work reported an in-situ vapor-liquid-solid (VLS) preparation method of SiC whiskers (SiCw) catalyzed by Fe-oxides on carbon fibers, which could provide a method for preparing SiCw/carbon fiber composites. The mechanism of the SiCw was theoretically designed and then experimentally validated using XRD, SEM, and TEM. Fe2O3 was chosen as a Fe-ox...
This work reported an in-situ vapor-liquid-solid (VLS) preparation method of SiC whiskers (SiCw) catalyzed by Fe-oxides on carbon fibers, which could provide a method for preparing SiCw/carbon fiber composites. The mechanism of the SiCw was theoretically designed and then experimentally validated using XRD, SEM, and TEM. Fe2O3 was chosen as a Fe-ox...
status: published
Pt/CeO2 has gained much attention for their high activity in low-temperature (LT) water-gas shift (WGS) reaction. However, the inclusion of H2 in the feed as in the practical reaction condition significantly degrades the LT-WGS activity of the Pt/CeO2 catalysts. In this contribution, the activity of Pt/CeO2 catalyst under the feed gas containing ex...
Ancient martian organic matter is likely to take the form of kerogen-like recalcitrant macromolecular organic matter (MOM), existing in close association with reactive mineral surfaces, especially iron oxides. Detecting and identifying a biological origin for martian MOM will therefore be of utmost importance for life detection efforts at Mars. We ...
Micro-Raman spectroscopy was employed for the analysis of samples collected from the shelters Campo Cerda 1, Angostura Blanca and Campo Moncada 1 located in Piedra Parada valley, Chubut province, Argentinian Patagonia. Different coloured layers, degradation products and rock supports were analysed. Haematite (alpha-Fe2O3), goethite (alpha-FeOOH), g...
MET amplification (METamp), a mechanism of acquired resistance to EGFR tyrosine kinase inhibitors, occurs in up to 30% of patients with non-small-cell lung cancer (NSCLC) progressing on first-line osimertinib. Combining osimertinib with a MET inhibitor, such as tepotinib, an oral, highly selective, potent MET tyrosine kinase inhibitor, may overcome...
status: published
