211 research outputs found
Solvent and Temperature Effects on the Chiral Aggregation of Optically Active Poly(dialkylsilane)s Confined in Microcapsules
Terao K., Mori Y., Dobashi T., et al. Solvent and Temperature Effects on the Chiral Aggregation of Optically Active Poly(dialkylsilane)s Confined in Microcapsules. Langmuir, 20(2), 306-308, December 12, 2003. Copyright © 2003, American Chemical Society. https://doi.org/10.1021/la0302798
Photocatalytic Approaches for Hydrogen Production via Formic Acid Decomposition
The photocatalytic dehydrogenation of formic acid has recently emerged as an outstanding alternative to the traditional thermal catalysts widely applied in this reaction. The utilization of photocatalytic processes for the production of hydrogen is an appealing strategy that perfectly matches with the idea of a green and sustainable future energy scenario. However, it sounds easier than it is, and great efforts have been needed to design and develop highly efficient photocatalysts for the production of hydrogen from formic acid. In this work, some of the most representative strategies adopted for this application are reviewed, paying particular attention to systems based on TiO2, CdS and C3N4.The present work was supported by JST, PRESTO (JPMJPR1544) and by Grants-in-Aid for Scientific Research (nos. 26220911, 25289289, and 26630409, 26620194) from the Japan Society for the Promotion of Science (JSPS) and MEXT and âElemental Strategy Initiative to Form Core Research Centerâ. MNG gratefully acknowledge the financial support by the Generalitat Valenciana and Plan GenT (CDEIGENT/2018/027) for the financial support. DST thanks MICINN for a âJuan de la Ciervaâ contract (IJCI-2016-27636)
Design of PdâGrapheneâAu Nanorod Nanocomposite Catalyst for Boosting SuzukiâMiyaura Coupling Reaction by Assistance of Surface Plasmon Resonance
Promotional Effect of Surface Plasmon Resonance on Direct Formation of Hydrogen Peroxide from H2 and O2 over Pd/Graphene-Au Nanorod Catalytic System
Signal Changes in the Brain on Susceptibility-Weighted Imaging Under Reduced Cerebral Blood Flow: A Preliminary Study
OBJECTIVES: To reveal the characteristics of susceptibilityâweighted imaging (SWI) under low cerebral blood flow (CBF) induced by hyperventilation (HV). MATERIALS AND METHODS: This study was approved by the institutional review board. Informed consent was obtained. Six healthy volunteers (5 men, 1 woman; mean age, 29 years; range, 24â33 years) underwent SWI and arterial spin labeling perfusion imaging under normal ventilation (NV) and HV at 3.0 T. Regions of interest (ROIs) were placed on gray matter (GM) and white matter (WM) of the frontal lobe (FL) and occipital lobe (OL). Intensities of ROIs were compared between NV and HV. Contrast of veins compared with adjacent cerebral parenchyma (CV) was also compared between NV and HV. RESULTS: CBF during HV (CBFHV) was decreased compared with CBF during NV (CBFNV) (29.1 ± 4.6%). FLâGMHV and OLâGMHV showed significant signal decreases compared with FLâGMNV and OLâGMNV, respectively (P= .018, .017). CVHV was significantly increased compared with CVNV (164.1 ± 29.9%) (P= .00019). CONCLUSIONS: SWI sensitively reflects HVâinduced decreases in CBF. The present results might assist in the interpretation of SWI in clinical practice, since CBF decreases might also influence signal changes on SWI
Enhanced ammonia-borane decomposition by synergistic catalysis using CoPd nanoparticles supported on titano-silicates
Pd and CoxPd1âx nanoparticles (NPs), synthesized using the reduction by solvent method, were loaded on SiO2 and TiâSiO2 supports. The resulting catalysts were tested in the ammonia-borane decomposition reaction under dark and UV-vis conditions. The synergistic promotion by Co (in the NPs) and Ti (in the support), combined with the UV-vis light irradiation, enhanced the catalytic activity showing very promising TOFs values for this kind of catalysis, from 1.53 to 49.5 mol H2 per mol Pd per min.We thank the Spanish Ministry of Economy and Competitiveness (MINECO), Generalitat Valenciana and FEDER (Projects CTQ2015-66080-R MINECO/FEDER and PROMETEOII/2014/010) for financial support. J. G. A. thanks the MINECO for his fellowship (BES-2013-063678), with special thanks for the mobility grant of MINECO (EEBB-I-15-10219) at Osaka University
Engineering of Surface Environment of Pd Nanoparticle Catalysts on Carbon Support with PyreneâThiol Ligands for Semihydrogenation of Alkynes
Marsupialization of Keratocystic Odontogenic Tumors of the Mandible: Longitudinal Image Analysis of Tumor Size via 3D Visualized CT Scans
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