Results 31 to 40 of about 196,302 (193)

Stylized facts of intraday precious metals [PDF]

, 2017
This paper examines the stylized facts, correlation and interaction between volatility and returns at the 5-minute frequency for gold, silver, platinum and palladium from May 2000 to April 2015.
A. A. A. Khalifa, A. Jain, A. K. Edwards, A. Madhavan, A. R. Wood, A. Ranaldo, Andrew Urquhart, Brian Lucey, C. A. E. Goodhart, C. W. J. Granger, E. F. L. Chai, F. Breedon, Frank McGroarty, G. Bekaert, G. J. Wang, G. Koutmos, J. Cai, J. P. Broussard, Jonathan Batten, K. P. Evans, L. Rogers, L. Rogers, L.J. Lockwood, M. Caporin, M. Garman, M. Hauptfleisch, Maurice Peat, P. Chelley-Steeley, P. Dennis, P. Giot, R. Hafner, R. T. Baillie, R. T. Baillie, S. L. Heston, S. Murray, T. Bollerslev, T. G. Anderson, T. H. McInish, T. H. McInish, T. H. McInish, W. A. Brock, Wei-Xing Zhou, X. Cai, Y. C. Loon, Y. Hamao   +44 more
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Geodynamics and Ore Content of Proterozoic Maphites in the Central Part of the Aldan-Stanovoy Shield (Southern North Asian Craton)

Геодинамика и тектонофизика
The study of diverse mantle-derived igneous complexes is important for interpreting geodynamic events, ore deposits formation mechanisms, and ore-forming fluid sources.
A. A. Kravchenko, A. V. Okrugin, V. I. Beryozkin, N. V. Popov, E. E. Loskutov   +4 more
doaj   +1 more source

Will precious metals shine ? A market efficiency perspective [PDF]

, 2014
International audiencePrecious metals (gold, silver, and platinum) have become an important part of investment portfolios forindividuals as well as for institutions.
Charles, Amélie, Darné, Olivier, Kim, Jae H.   +2 more
core   +6 more sources

Synthesis, Photo-Physical Properties, and Electroluminescence Characteristics of Iridium Phosphorescent Materials Based on Different β-Diketonate Ancillary Ligands

Molecules
Organic light-emitting diodes (OLEDs) based on phosphorescent materials are among the most promising technologies for displays and lightings. For red-emitting heteroleptic iridium complexes (HICs), vast and major research has been focused on the design ...
Qiaowen Chang, Ke Zhang, Caixian Yan, Liming Xie, Yuanqiuqiang Yi, Wenming Su, Weiping Liu   +6 more
doaj   +1 more source

ADSORPTION ESSAYS OF PALLADIUM IN MODIFIED SILICA GEL WITH THIOURONIUM GROUPS: EXPERIMENTAL AND THEORICAL STUDIES [PDF]

, 2011
Indexación: Web of Science; ScieloThe silylant 3-cloropropyltriethoxysilyl was anchored over silica gel in anhydrous conditions in order to react with thiourea to obtain modified silica gel with thiouronium. The aim to obtain an inorganic support that is
ARRATIA-PEREZ, RAMIRO, CARREÑO G., ALEXANDER, CHÁVEZ M., IVONNE, MANRÍQUEZ M., JUAN M., MARDONES L., MIGUEL, SCHOTT V., EDUARDO, VEGA DE K., JUAN CARLOS, ZÁRATE B., XIMENA   +7 more
core   +1 more source

The current induced mass transformation of Ag alloy wire bonded led chip

Journal of Materials Research and Technology
The high input and output (I/O) data exchange, coupled with continuous increase in power density, elevates the risk of bonding interface performance degradation and electromigration (EM) failure during electrical transmission.
Xiaohong Yuan, Qinlian He, Shanju Zheng, Jiaheng Zhang, Dapeng Yang, Qinsong Bi, Yuxi Luo, Dengquan Chen, Xiaojing Wang   +8 more
doaj   +1 more source

Bullion production in imperial China and its significance for sulphide ore smelting world-wide [PDF]

, 2015
Gold and silver production was of major importance for almost all ancient societies but has been rarely studied archaeologically. Here we present a reconstruction of a previously undocumented technology used to recover gold, silver and lead at the site ...
Chen, J, Larreina-Garcia, D, Liu, S, Martinón-Torres, M, Rehren, T, Venunan, P, Xu, C   +6 more
core  

Palladium, platinum, and gold distribution in serpentinite seamounts in the Mariana and Izu-Bonin forearcs: evidence from Leg 125 fluids and serpentinites

, 1992
Palladium, platinum, and gold were analyzed for 20 interstitial water samples from Leg 125. No Pd or Pt was detected in fluids from serpentinite muds from Conical Seamount in the Mariana forearc, indicating that low-temperature seawater-peridotite ...
Parkinson, I. J., Hall, G. E. M., Pearce, J. A.   +2 more
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Synthesis and Characterization of Nanoscale Tungsten Particles with Hollow Superstructure Using Spray Drying Combined with Calcination Process

Nanoscale Research Letters, 2019
Nanoscale tungsten (W) powder is used in some special materials. In this study, a hollow superstructure W powder consisting of nanoparticles was synthesized by spray drying combined with two-step calcination from commercial (NH4)6W7O24·6H2O.
Panchao Zhao, Wei Yi, Qigao Cao, Bosheng Zhang, Kunkun Chen, Rui Dang, Jialin Chen   +6 more
doaj   +1 more source

Use of Desulfovibrio and Escherichia coli Pd-nanocatalysts in reduction of Cr(VI) and hydrogenolytic dehalogenation of polychlorinated biphenyls and used transformer oil [PDF]

, 2012
BACKGROUND Desulfovibrio spp. biofabricate metallic nanoparticles (e.g. ‘Bio-Pd’) which catalyse the reduction of Cr(VI) to Cr(III) and dehalogenate polychlorinated biphenyls (PCBs). Desulfovibrio spp.
Baxter-Plant, VS, Bennett, J. A., Deplanche, K, Humphries, AC, Macaskie, LE, Mikheenko, I. P., Redwood, MD, Wood, J.   +7 more
core   +1 more source