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Now showing items 12841-12850 of 13959
Irida-β-ketoimines derived from Hydrazines to Afford Metallapyrazoles or N-N Bond Cleavage: A Missing Metallacycle Disclosed by a Theoretical and Experimental Study
(ACS, 2016)
Unprecedented metallapyrazoles [IrH2{Ph2P(o-C6H4)CNNHC(o-C6H4)PPh2}] (3) and [IrHCl{Ph2P(o-C6H4)CNNHC(o-C6H4)PPh2}] (4) were obtained by the reaction of the irida-β-ketoimine [IrHCl{(PPh2(o-C6H4CO))(PPh2(o-C6H4CNNH2))H}] ...
Tailoring Mechanical Properties of Rigid Polyurethane Foams by Sorbitol and Corn Derived Biopolyol Mixtures
(ACS, 2015-10-28)
Sorbitol arises to be a strong candidate for renewably sourced polyol synthesis. Moreover, processes for extracting sorbitol directly from cellulosic materials are effective, and materials such as agroforestry residues ...
Large size FFTs over time-varying channels
(IET, 2014-06-01)
[EN] In orthogonal frequency division multiplexing (OFDM) signals, the usage of large size fast Fourier transforms (FFTs) reduces the guard interval percentage, and therefore increases the data throughput reducing the data ...
Regioselectivity Change in the Organocatalytic Enantioselective (3+2) Cycloaddition with Nitrones Through Cooperative Hydrogen-Bonding Catalysis/Iminium Activation.
(Wiley-VCH, 2017-01-12)
The reaction of nitrones with enals through iminium
activation can be modulated by using cooperative
hydrogen-bonding catalysis to induce the participation of
a nitrone ylide (C-N-C) instead of the classical C-N-O
dipole. ...
La responsabilidad social corporativa y la norma SA 8000 : un análisis de su adopción en las organizaciones cooperativas
(Servicio Editorial de la Universidad del País Vasco/Euskal Herriko Unibertsitatearen Argitalpen Zerbitzua, 2013)
La vinculación existente entre las bases o principios de las organizaciones cooperativas y el enfoque de la Responsabilidad Social Corporativa (RSC) ha sido subrayada por diversos trabajos teóricos. Sin embargo, el análisis ...
Marine infectious disease dynamics and outbreak thresholds: contact transmission, pandemic infection, and the potential role of filter feeders
(Wiley, 2016-04)
Disease-causing organisms can have significant impacts on marine species and communities. However, the dynamics that underlie the emergence of disease outbreaks in marine ecosystems still lack the equivalent level of ...
Experimental Study of the Response of Efficient Lighting Technologies to Complex Voltage Fluctuations
(Elsevier, 2014-07-09)
The replacement of incandescent lamps with more energy-efficient lighting technologies has a direct influence on the way flicker is measured. The International Electrotechnical Commission (IEC) established in the 61000-4-15 ...
Cyclotryptophan Mycotoxins: Short Synthesis of the Desymmetrized meso-Chimonantine Core of Leptosin C
(Georg Thieme, 2016-12-01)
The desymmetrized meso-chimonantine core of leptosin C was prepared in a short stereoselective convergent sequence in 5 steps as the longest linear path from methyl l-tryptophan hydrochloride as starting material. The key ...
The role of the design and operation of individual heating systems for the energy retrofits of residential buildings
(Elsevier, 2016-10-15)
he feasibility of individual natural gas fired boiler-based heating systems in the retrofitting of buildings constructed in the 50–60 s in Bilbao (northern Spain) is evaluated in this paper. A holistic approach through ...
Exact learning of multivalued dependency formulas
(Elsevier, 2017-12-01)
The transformation of a relational database schema into the fourth normal form, which minimizes data redundancy, relies on the correct identification of multivalued dependencies. In this work, we study the learnability of ...