Results 41 to 50 of about 576,075 (159)

Sigma Theta Tau International 43rd Biennial Convention 2015 Conference Proceedings [PDF]

, 2018
Sigma Theta Tau International the Honor Society of Nursing (Sigma) conducted its 43rd Biennial Convention in Las Vegas, Nevada, USA from 7-11 November 2015.
Sigma Theta Tau International
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Understanding and Controlling the Dielectric Response of Metal-Organic Frameworks.

ChemPlusChem, 2018
Metal-organic framework (MOF) materials have recently been shown to have promising electronic and dielectric properties. This study involves investigating a diverse range of MOFs to rationalise how the different building blocks that form the structure ...
Matthew R. Ryder, Lorenzo Donà, J. G. Vitillo, B. Civalleri   +3 more
semanticscholar   +1 more source

Dan Hammett: ceramics (2) [PDF]

, 2017
ARTIST: Dan Hammett (UD Professor) MATERIAL: ceramics DIMENSIONS: 9.5" x 9.5" x 30" COLLECTION: UDC CATALOG#: UDC.3002.4 LOCATION: CFH PROVENANCE: University of Dallas, 2017From http://www.danhammettceramics.com/: I have been ...
Hammett, Dan
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DFT Studies on the Antioxidant Activity of Naringenin and Its Derivatives: Effects of the Substituents at C3

International Journal of Molecular Sciences, 2019
The radical scavenging activity of a flavonoid is largely influenced by its structure. The effects of the substituents at C3 position on the antioxidant activity of naringenin were carried out using the density functional theory (DFT) method.
Yan-Zhen Zheng, Geng Deng, Rui Guo, Da-Fu Chen, Zhongmin Fu   +4 more
semanticscholar   +1 more source

Anwendung der Hammett-Gleichung auf die Acidität von 3-Brom-1,2,4-triazolen [PDF]

, 1967
Ionization constants of a set of 5-substituted 3-bromo-1,2,4- triazoles have been determined by potentiometric titration.
Freiberg, Walter, Kröger, Carl-Friedrich   +1 more
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The correlation of Hammett substituent and Brownstein solvent constants with photochromic properties of triarylmethane dye leucocyanides [PDF]

, 1979
Five triarylmethane leucocyanides were synthesized from their parent dyes, and a photochromic test apparatus was designed and fabricated. The leucocyanides were tested for sensitivity and fade time in six solvents.
Bayley, Robert
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Hammett Analyses of Halocarbene–Halocarbanion Equilibria

, 2016
Substituted arylchlorocarbenes (X = H, p-Cl, p-CF3, p-F, m-Cl) reacted reversibly with Cl– in dichloroethane to form the corresponding aryldichloromethide carbanions.
Karsten Krogh-Jespersen (1397983), Lei Wang (6656), Robert A. Moss (1397986)   +2 more
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Ring-chain tautomerism and crystal structure of some 1,3-oxazacyclanes, and the electrophilic substituent constants for some heteroaryl groups in solution and in the gas-phase

, 1994
In principle, the ring-chain tautomeric ratios of a number of 2-heteroaryl-substituted oxazolidines and tetrahydro-1,3-oxazines are well suited for determination of the Hammett-Brown sigma+ constants of heteroaryl substituents such as 2-furyl, 3-furyl, 3-
Dahlqvist Martti, Fülöp Ferenc, Sillanpää Reijo, Pihlaja Kalevi, Vainiotalo Pirjo   +4 more
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Correlation of the Hammett Equation with the Solubility and Dissociation Constants of Benzoic Acid in Aquo-ethanolic Solutions

, 1994
Department of Chemistry, University of Kalyani, Kalyani-741 235 Manuscript received 18 February 1993, accepted 29 July 1993 The correlation of solubility and the dissociation constants of benzoic acids with Hammett equation in aquo-ethanolic solutions ...
S. C. LAHIRI, P. K. BISWAS
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ACID-CATALYZED AROMATIZATION OF BENZENE CIS-1,2-DIHYDRODIOLS - A CARBOCATION TRANSITION-STATE POORLY STABILIZED BY RESONANCE

Acid-catalysed dehydration of 3-substituted benzene cis-1,2-dihydrodiols exhibits a Hammett plot with p = -8.2, consistent with reaction via a benzenonium ion-like intermediate; however, correlation of +M resonance substituents suchas Me and MeO by sigma(

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