نتایج جستجو برای: nd pore
تعداد نتایج: 71936 فیلتر نتایج به سال:
Process conditions for the fabrication of porous uranium oxide microspheres prepared via internal gelation were assessed. To improve application infiltration, microstructural parameters such as density, porosity and specific surface area Specifically, effect calcination temperature use pore-formers was studied. Accessible levels around 20% obtained after at 773 K or 823 K, without a pore-former...
We present Spitzer 70 and 160 μm observations of the COSMOS Spitzer survey (S-COSMOS). The data processing techniques are discussed for the publicly released products consisting of images and source catalogs. We present accurate 70 and 160 μm source counts of the COSMOS field and find reasonable agreement with measurements in other fields and with model predictions. The previously reported coun...
When nonwetting fluid displaces wetting fluid in a porous rock many rapid pore-scale displacement events occur. These events are often referred to as Haines jumps and any drainage process in porous media is an ensemble of such events. However, the relevance of Haines jumps for larger scale models is often questioned. A common counter argument is that the high fluid velocities caused by a Haines...
The radiogenic neodymium (Nd) isotope composition of foraminiferal shells provides a powerful archive to investigate past changes in sources and mixing of water masses. However, seawater Nd isotope ratios extracted from foraminiferal shells can be biased by contaminant phases such as organic matter, silicates, or ferromanganese coatings, the removal of which requires rigorous multiple step clea...
A 36× enlarged triply periodic porous cube of photocured polymer, 60 millimeters in total length, shown refl ected off a pool of uncured resin. Computer-aided design makes it possible to tailor materials with control over porosity, pore size, and mechanical properties. These materials may subsequently fi nd use as scaffolds for tissue engineering and cell-laden hydrogel constructs. See the spec...
2562-Pos Board B254 Direct Detection of Reconstituted, Snare-Mediated Fusion Pore Dynamics Zhenyong Wu, Erdem Karatekin. Department of Cellular and Molecular Physiology, Yale University, New Haven, CT, USA. Exocytosis underlies release of neurotransmitters and hormones. Electrophysiological and electrochemical measurements from live cells have shown that the initial fusion pore is small (~1 nm ...
When cotton linters were soaked in cold 10-percent sodium hydroxide, washed, a nd neutralized, and transferred successively to methyl alcohol and benzene, and carefully dried a t reduced pressure, a surface area as high as 71.3 square meters per gram was obtained by the Brunauer , Emmett, T e ller technique. Previous areas for untreated cotton were a ll below 1 sq uare meter per gram. Linters c...
We describe the third new species of the genus Cyrtodactylus from Ba Den Mountain, Tay Ninh Province, southern Vietnam based on a type series consisting of eleven specimens. Cyrtodactylus thuongae sp. nov. is distinguished from the remaining Indochinese Bent-toed Geckos by a combination of the following morphological characters: size medium, with a maximum SVL of 77.6 mm; dorsal pattern consist...
Porous and robust 12-connected metal-organic frameworks (MOFs) were constructed by linking tetranuclear lanthanide (Ln) carbonate clusters with organoboron-derived tricarboxylate bridging ligands. The high-connectivity Ln-MOFs feature remarkable thermal and hydrolytic stability and a large number of isolated Lewis acid B(III) and Ln(III) sites on the pore surfaces. The Nd-MOF assisted with sodi...
Herein, restricted accessed magnetic nanoparticles were synthesized by self-assembly of a non-ionic surfactant (Tween-20) onto the 4-(2-pyridylazo)resorcinol (PAR) functionalized magnetic nanoparticles (MNPs). A series of analytical techniques were employed for the characterization of the as-prepared restricted accessed Fe3O4@SiO2@PAR, and it was found that the as-prepared restricted accessed F...
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