Search results for "LCA"
showing 10 items of 1995 documents
CCDC 684302: Experimental Crystal Structure Determination
2009
Related Article: C.Yuste, D.C.de Castro Gomes, H.Adams, J.A.Thomas, F.Lloret, M.Julve|2008|Polyhedron|27|2577|doi:10.1016/j.poly.2008.05.015
CCDC 1506160: Experimental Crystal Structure Determination
2017
Related Article: Nicole Parra, Julio B. Belmar, Claudio A. Jiménez, Jorge Pasán, Catalina Ruiz-Pérez|2017|CrystEngComm|19|1076|doi:10.1039/C6CE02393B
CCDC 160389: Experimental Crystal Structure Determination
2002
Related Article: W.Uhl, F.Breher, A.Mbonimana, J.Gauss, D.Haase, A.Lutzen, W.Saak|2001|Eur.J.Inorg.Chem.||3059|doi:10.1002/1099-0682(200112)2001:12<3059::AID-EJIC3059>3.0.CO;2-Z
CCDC 1938871: Experimental Crystal Structure Determination
2020
Related Article: S. Maryamdokht Taimoory, Kwaku Twum, Mohadeseh Dashti, Fangfang Pan, Manu Lahtinen, Kari Rissanen, Rakesh Puttreddy, John F. Trant, Ngong Kodiah Beyeh|2020|J.Org.Chem.|85|5884|doi:10.1021/acs.joc.0c00220
CCDC 250456: Experimental Crystal Structure Determination
2005
Related Article: L.M.Toma, R.Lescouezec, D.Cangussu, R.Llusar, J.A.Mata, S.Spey, J.A.Thomas, F.Lloret, M.Julve|2005|Inorg.Chem.Commun.|8|382|doi:10.1016/j.inoche.2004.12.031
Mercury Emissions Associated with Volcanoes and Geothermal Sources
2009
There is some debate at present regarding the quantity of mercury naturally released by volcanoes and its relative significance to the natural Hg budget. In order to better understand the role of volcanoes in the global mercury budget a number of field campaigns were carried out to evaluate the Hg/S ratios in volcanic gases around the world. Measurements have been made of emissions of Masaya (Nicaragua), Etna and Vulcano (Italy), Tatun (Taiwan), Taal and Makiling (Philippines) and Kilauea (Hawaii, USA). Emissions from open vents, fumaroles, hot springs, bubbling mud pools and altered ground were investigated at these sites and concentrations of mercury elevated above background levels were …
Using Statistical and Computer Models to Quantify Volcanic Hazards
2009
Risk assessment of rare natural hazards, such as large volcanic block and ash or pyroclastic flows, is addressed. Assessment is approached through a combination of computer modeling, statistical modeling, and extreme-event probability computation. A computer model of the natural hazard is used to provide the needed extrapolation to unseen parts of the hazard space. Statistical modeling of the available data is needed to determine the initializing distribution for exercising the computer model. In dealing with rare events, direct simulations involving the computer model are prohibitively expensive. The solution instead requires a combination of adaptive design of computer model approximation…
PROBABILISTIC QUANTIFICATION OF HAZARDS: A METHODOLOGY USING SMALL ENSEMBLES OF PHYSICS-BASED SIMULATIONS AND STATISTICAL SURROGATES
2015
This paper presents a novel approach to assessing the hazard threat to a locale due to a large volcanic avalanche. The methodology combines: (i) mathematical modeling of volcanic mass flows; (ii) field data of avalanche frequency, volume, and runout; (iii) large-scale numerical simulations of flow events; (iv) use of statistical methods to minimize computational costs, and to capture unlikely events; (v) calculation of the probability of a catastrophic flow event over the next T years at a location of interest; and (vi) innovative computational methodology to implement these methods. This unified presentation collects elements that have been separately developed, and incorporates new contri…
Can Green Dimethyl Carbonate Synthesis be More Effective? A Catalyst Recycling Study Benefiting from Experimental Kinetics and DFT Modeling
2014
Dibutyldimethoxystannanes are known to catalyze the reaction between carbon dioxide and methanol leading to dimethyl carbonate. Despite similarities between din-butyl- and ditert-butyldimethoxystannane, the recycled complexes have different structural features. In the din-butyl series, a decatin(IV) complex has been characterized and is less active than the stannane precursor. Kinetic experiments likely indicate that all the tin centers are not active, which is confirmed in comparing with the related dinuclear 1,3-dimethoxytetran-butyldistannoxane complex. In the ditert-butyl series, the tritin(IV) complex isolated upon recycling features the steric effect of bulky tBu ancillary ligands. In…
Marrëdhëniet e Patriarkanës së Ohrit me Sicilinë dhe komunitetet arbëreshe (shek. XVI-XVIII)
2018
Indagine storiografica sui rapporti tra il Patriarcato di Ocrida e la Sicilia. Presenze di ecclesiastici ortodossi nelle comunità albanesi di Sicilia (sec. XVI-XVIII)