Results 261 to 270 of about 10,115,754 (295)

DETERMINATION OF DISPERSION AND SUPPORTED METAL CRYSTALLITE SIZE

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
J. A. Anderson, M. Fernandez‐Garcia, A. Martinez‐Arias   +2 more
openaire   +1 more source

Size to density coupling of supported metallic clusters

Phys. Chem. Chem. Phys., 2009
One of the difficulties in standard growth of metallic nano-clusters on oxide substrates as model catalysts is the strong coupling between clusters size and density. Employing multiple cycles, amorphous solid water-buffer layer assisted growth (ASW-BLAG) procedure, we demonstrate how the size to density coupling can be eliminated under certain ...
Elad, Gross, Micha, Asscher
openaire   +2 more sources

Particle size and metal-support interaction effects in pumice supported palladium catalysts

Applied Catalysis A: General, 1995
Abstract Pumice supported palladium catalysts with different metal loading and different metal particle sizes have been analyzed with X-ray photoelectron spectroscopy (XPS). The observed negative shift of the Pd 3d doublet binding energies of all the catalysts with respect to the corresponding binding energies of palladium metal powder suggested an ...
A. M. VENEZIA, ROSSI, ANTONELLA, D. DUCA, A. MARTORANA, G. DEGANELLO   +4 more
openaire   +2 more sources

Size and support effects for CO oxidation on supported Pd catalysts

Science China Chemistry, 2010
National Natural Science Foundation of China [20873109]; National Basic Research Program of China (973 program) [2005CB221401, 2010CB732303]; Chinese Ministry of Education [309019]; Ph.D. Programs Foundation of Chinese Ministry of Education [200803841011]; Natural Science Foundation of Fujian Province, China [2008J0168]
Wang, ZhaoWen, Li, Bin, Chen, MingShu, Weng, WeiZheng, Wan, HuiLin   +4 more
openaire   +2 more sources

Particle size and support effects in hydrogenation over supported gold catalysts

Catal. Sci. Technol., 2013
Particle size and support effects were determined for the hydrogenation of nitrobenzene over gold supported on alumina and titania by kinetic experiments, TEM and in situ high energy resolution fluorescence detected X-ray absorption spectroscopy (HERFD XAS).
Hartfelder, Kartusch Christiane, Makosch Martin, Rovezzi Mauro, Sá J., van Bokhoven Jeroen Anton   +5 more
openaire   +1 more source

Step size-adapted online support vector learning

Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005., 2006
We present an online Support Vector Machine (SVM) that uses Stochastic Meta-Descent (SMD) to adapt its step size automatically. We formulate the online learning problem as a stochastic gradient descent in Reproducing Kernel Hilbert Space (RKHS) and translate SMD to the nonparametric setting, where its gradient trace parameter is no longer a coefficient
A. Karatzoglou, S.V.N. Vishwanathan, N.N. Schraudolph, A.J. Smola   +3 more
openaire   +1 more source

Support sizes of indecomposable threefold triple systems

2001
A \(\lambda\)-fold triple system is a pair \(T=(V,\text{QTR}{\mathcal B})\), \(\text{QTR}{\mathcal B}\) being a collection of 3-subsets of \(V,\) so that each \(2-\)subset of \(V\) occurs in exactly \(\lambda \) block of \(\text{QTR} {\mathcal B}\).
LO FARO, Giovanni, SHEN H.
openaire   +2 more sources

Supportive Breeding and Variance Effective Population Size

Conservation Biology, 1995
The practice of supporting weak, wild populations through release of individuals bred in captivity is becoming an increasingly important conservation measure. A frequently recommended form of such breeding‐release activity refers to supportive breeding: a fraction of the target population is brought into captivity for reproduction, and the resulting ...
Nils Ryman, Per Erik Jorde, Linda Laikre
openaire   +1 more source

Virtual memory support for multiple page sizes

Proceedings of IEEE 4th Workshop on Workstation Operating Systems. WWOS-III, 2002
The advent of computers with 64-bit virtual address spaces and giga-bytes of physical memory will provide applications with many more orders of magnitude of memory than is possible today. However, to tap the potential of this new hardware, we need to re-examine how virtual memory is traditionally managed.
Y.A. Khalidi, M. Talluri, M.N. Nelson, D. Williams   +3 more
openaire   +1 more source

Size-Dependent Strong Metal–Support Interaction

Acta Physico Chimica Sinica, 2021
openaire   +1 more source