Results 61 to 70 of about 760,772 (313)

Measuring surface-area-to-volume ratios in soft porous materials using laser-polarized xenon interphase exchange NMR

, 2001
We demonstrate a minimally invasive nuclear magnetic resonance (NMR) technique that enables determination of the surface-area-to-volume ratio (S/V) of soft porous materials from measurements of the diffusive exchange of laser-polarized 129Xe between gas ...
Butler J P, Butler J P, Callaghan P T, D Hoffmann, Eger E I, G P Topulos, Helmer K G, Hirokawa B, J P Butler, Jost W, M I Hrovat, Petty T L, R A Rogers, R L Walsworth, R W Mair, Rogers R A, S Patz, Stejskal E O, Suzuki S, Tanner J E, Weibel E R, Weibel E R, Wong P Z   +22 more
core   +1 more source

Tuning the Selectivity of the CO2 Reduction Reaction by Means of Synergistic Interactions in the Cu, Ag, Ce System

Advanced Functional Materials, EarlyView.
Multi‐metal Cu─Ce─Ag nanoparticles harness synergistic interactions to drive efficient electrochemical CO2 reduction reaction toward C2+ products at high current densities. Ag enhances CO production, Ce modulates Cu oxidation states, and together they boost *CO coverage and local pH to enhance C─C coupling, enabling record C2+ yields with suppressed ...
Nini Zhang, Muhammad Adib Abdillah Mahbub, Bashir Eid, Thomas Quast, Jian Zhang, Ridha Zerdoumi, Xin Wang, Sabine Seisel, Wangcheng Zhan, Wolfgang Schuhmann   +9 more
wiley   +1 more source

Reliability enhancement of LNG fuel gas supply system in combined-cycle power plant

Energy Reports, 2020
This article aims to present a technique to enhance reliability of liquefied natural gas (LNG) fuel gas supply system (FGSS) of gas turbine unit in a combined-cycle power plant.
Teerawat Thepmanee, Chakri Nachasingha, Sart Kummool   +2 more
doaj   +1 more source

Deciphering Small Molecule Diffusion Parameters Across Light Responsive Polymersome Membranes

Advanced Functional Materials, EarlyView.
Light‐responsive polymersomes bearing donor–acceptor Stenhouse adducts (DASAs) enable programmable control over small‐molecule transport across synthetic membranes. By systematically varying DASA density, an optimal functionalization regime is identified that maximizes light‐gated permeability.
Farzina Matubbar, Beyzanur Kaya, Buse Ipek, Tenzin Dorjee, Shoghik Hakobyan, Mohamed Chami, Julien E. Gautrot, Omar Rifaie‐Graham   +7 more
wiley   +1 more source

Safety operation of chromatography column system with discharging hydrogen radiolytically generated

EPJ Nuclear Sciences & Technologies, 2015
In the extraction chromatography system, accumulation of hydrogen gas in the chromatography column is suspected to lead to fire or explosion. In order to prevent the hazardous accidents, it is necessary to evaluate behaviors of gas radiolytically ...
Watanabe Sou, Sano Yuichi, Nomura Kazunori, Koma Yoshikazu, Okamoto Yoshihiro   +4 more
doaj   +1 more source

Isotope effects in gas–liquid chromatography of steroids

Journal of Lipid Research, 1965
When gas–liquid chromatography was performed with steroids containing H3 and C14, the H3/C14 ratio of the effluent was higher at the beginning and at the tail of the steroid peak.
Marvin A. Kirschner, Mortimer B. Lipsett
doaj   +1 more source

Proton irradiation of simple gas mixtures: Influence of irradiation parameters [PDF]

, 1990
In order to get information about the influence of irradiation parameters on radiolysis processes of astrophysical interest, methane gas targets were irradiated with 6.5 MeV protons at a pressure of 1 bar and room temperature.
Hofmann, A., Sack, Norbert J., Schuster, R.   +2 more
core   +1 more source

Nanoelectromechanical Resonator Arrays for Ultrafast, Gas-Phase Chromatographic Chemical Analysis [PDF]

, 2010
Miniaturized gas chromatography (GC) systems can provide fast, quantitative analysis of chemical vapors in an ultrasmall package. We describe a chemical sensor technology based on resonant nanoelectromechanical systems (NEMS) mass detectors that provides
Aldridge, S. J., Lewis, N. S., Li, Mo, McCaig, H. C., Myers, E. B., Roukes, M. L., Simonson, R. J., Tang, H. X., Whiting, J. J.   +8 more
core   +2 more sources

Sustainable Catalyst‐Free PLG Networks: Recyclability, Biodegradability, and Functional Performance

Advanced Functional Materials, EarlyView.
A catalyst‐additive free covalent adaptable network is developed from star‐shaped poly(lactide‐co‐glycolide) cross‐linked with pyromellitic dianhydride, enabling internal carboxylic acid‐driven transesterification. The resulting biodegradable network exhibits mechanical robustness (Young's modulus ≈1.6 GPa), complete recyclability, rapid biodegradation
Lars Schwarzer, Emilia Fulajtar, Seema Agarwal   +2 more
wiley   +1 more source

Determination_of D003 by capillary gas chromatography

Revista CENIC Ciencias Químicas, 2002
D003 is a mixture of saturated very long-chain fatty acids ranging from 24 to 36 carbon atoms, obtained from sugar cane (Saccharum officinarum L.) wax, with antiplatelet, 'antithrombotic, antioxidant and cholesterol-lowering effects .
David Marrero Delange, Ernesto Méndez Antolín, Víctor González Canavaciolo, Miriam O. Cora Medina, Abilio Laguna Granja   +4 more
doaj