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http://dx.doi.org/10.1103/physrevb.41.1216 | DOI Listing |
Heliyon
July 2023
Department of Chemical Engineering, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussel, Belgium.
Biomethane is a renewable natural gas substitute produced from biogas. Storage of this sustainable energy vector in confined clathrate hydrates, encapsulated in the pores of a host material, is a highly promising avenue to improve storage capacity and energy efficiency. Herein, a new type of periodic mesoporous organosilica (PMO) nanotubes, referred to as hollow ring PMO (HR-PMO), capable of promoting methane clathrate hydrate formation under mild working conditions (273 K, 3.
View Article and Find Full Text PDFJ Am Chem Soc
April 2017
Department of Chemistry and Polymer Science, University of Stellenbosch, Matieland 7602, South Africa.
Two isoreticular three-dimensional copper(II) glutarate-based pillared-layered metal-organic frameworks (MOFs) with flexible pillars, [Cu(glu)(bpa)] and [Cu(glu)(bpp)] (bpa = 1,2-bis(4-pyridyl)ethane; bpp = 1,3-bis(4-pyridyl)propane), undergo spontaneous phase changes upon solvent loss at room temperature. Using single-crystal X-ray diffraction analysis (SCXRD), we show that the phase changes result in new narrow-channel forms that experience a large reduction in solvent-accessible volume. Moreover, the [Cu(glu)(bpa)] MOF displays a stepped sorption isotherm for the uptake of CO at room temperature.
View Article and Find Full Text PDFWe report the dynamic refractive index (RI) change of tissue under a stepped compression load using a custom-built pressure apparatus. Angle-dependent reflectance profiles of biotissue samples are recorded, and the RI values are resolved using the derivative total reflection method. These results are relevant for understanding the mechanism of mechanical optical clearing, for investigating tissue dynamics under mechanical stimuli, and for other biomedical applications.
View Article and Find Full Text PDFBiophys J
February 2009
Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
Kinesin-1 is an ATP-driven molecular motor that "walks" along a microtubule by working two heads in a "hand-over-hand" fashion. The stepping motion is well-coordinated by intermolecular interactions between the kinesin head and microtubule, and is sensitively changed by applied forces. We demonstrate that hydrostatic pressure works as an inhibitory action on kinesin motility.
View Article and Find Full Text PDFAppl Opt
June 2008
Department of Biomedical Engineering, Ohio State University, Columbus, OH 43210, USA.
Differentiation among malignant tumors, benign tumors, and normal tissue is highly important in the diagnosis and treatment of many malignancies. We have proposed a dynamic schema for noninvasive characterization of pressure-induced changes in solid tumors. Our hypothesis has been that the altered neovascularization processes within cancer-bearing tissues may significantly increase vascular resistance and cause a much slower response of hemoglobin concentration during a dynamic compression stimulus.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!