نتایج جستجو برای: knorr condensation
تعداد نتایج: 32579 فیلتر نتایج به سال:
The genus Fusobacterium was proposed by Knorr (1922) for the pointed, nonsporulating, gram-negative, anaerobic bacilli found in the oral cavity. On the basis of morphology, three species were named, Fusobacterium nucleatum, Fusobacterium polymorphum, and Fusobacterium plauti-vincentii. Similarly, Hine and Berry (1937) described three species, based primarily on morphological and cultural charac...
In this paper, I want to develop some concepts designed to capture the affective and relational undergirding ofpractice in areas where practice is creativc and constructive. Current conceptions of practice emphasize the habitual and mle-governed features of practice. Though much debate surrounds the exact specification of the relevant mies and habits (see most authors seem to agree that practic...
BACKGROUND The classical Paal-Knorr reaction is one of the simplest and most economical methods for the synthesis of biologically important and pharmacologically useful pyrrole derivatives. RESULTS Polystyrenesulfonate-catalyzed simple synthesis of substituted pyrroles following Paal-Knorr reaction has been accomplished with an excellent yield in aqueous solution. This method also produces py...
On the available evidence for the temperature dependence of soil organic carbon W. Knorr, I. C. Prentice, J. I. House, and E. A. Holland QUEST, Department of Earth Sciences, University of Bristol, Bristol BS8 1RJ, UK National Center for Atmospheric Research, Boulder, Colorado, USA Received: 3 June 2005 – Accepted: 22 June 2005 – Published: 1 July 2005 Correspondence to: W. Knorr (wolfgang.knorr...
Tetraarylpyrroles with a 1-azulenyl substituent were prepared by the reaction of 1-azulenyl ketones, which have various aryl-substituents at their α-position, with benzoin in the presence of ammonium acetate as a nitrogen source of the pyrrole ring. Optical property of the tetraarylpyrroles obtained by the reaction was clarified by UV/Vis spectroscopy and/or time-dependent density functional th...
A recent paper by Knorr et al. (2005a) suggested that the decomposition of resistant soil organic matter is more temperature sensitive than labile organic matter. In Knorr et al.’s (2005a) model, the reference decay rate was presumed to be same for all pools of soil carbon. We refit Knorr et al.’s (2005a) model but allow both the activation energy and the reference decay rate to vary among soil...
Fluxes and C isotopic composition of dissolved carbon and pathways of methanogenesis in a fen soil exposed to experimental drought K.-H. Knorr, B. Glaser, and C. Blodau Limnological Research Station and Department of Hydrology, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany Department of Soil Physics, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany...
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