Abstract For Abstract see ChemInform Abstract in Full Text.
This article presents an extensive study on the selectivity, scope and structure-activity relations for the Pd-catalyzed amination of (het)aryl halides with primary amines. Aryl iodies, which are known to be more reluctant substrates to Pd-catalyzed amination, were also successfully converted.
An earlier procedure that estimates the peak deformation in base-isolated buildings is extended to include overturning and thereby estimate the peak axial forces in individual isolators. Such tools can be used as part of a design procedure to predict and subsequently eliminate bearing tension by modifying the design. The procedure is based on nonlinear response history analysis of an isolated block using an advanced bearing model that incorporates the relation between axial load and bearing response, known as axial-load effects. Rocking of the structure and bearing axial-load effects are found to have little influence on the peak lateral bearing deformation; median response spectra are within 10% of those when rocking is neglected entirely. Furthermore, bearing axial-load effects can usually be neglected in determining the maximum and minimum bearing axial forces; cases are identified where the error in neglecting such effects exceed 10%. Because the structure has been modeled as rigid, the limitations of the procedure should be assessed for superstructure designs that allow significant structural deformation.
Summary This paper presents an investigation of infill drilling performance and reservoir continuity with geostatistics and a reservoir simulator. The geostatistical technique provides many possible realizations and realistic descriptions of reservoir heterogeneity. Correlation between recovery efficiency and thickness of individual sand subunits is shown. Additional recovery from infill drilling results from thin, discontinuous subunits. The technique may be applied to variations in continuity for other sandstone reservoirs.
Abstract Recapitulating the three ages of “urban ethnography” born in Chicago a century ago, this book puts into historical and analytical perspective a controversy over the ethnography of nexus of race, class and morality in and around the Black American ghetto in the age of triumphant neoliberalism, in order to draw from it positive lessons for the theory and practice of fieldwork. Thoughtless empiricism, acceptance of problematics prefabricated by ordinary and political common sense, confusion between folk and analytical categories, confinement to the immediate perimeter of interaction, bifurcating moralism: these are all traps that every ethnographer encounters sooner or later on her path and that only collective vigilance can hope to thwart. This epistemological return is an opportunity to pinpoint the danger of ethnographism, the tendency to want to describe, interpret and explain a phenomenon based solely on the elements discerned through fieldwork, and to call for the correlative practice of an enactive, structural, and historicized ethnography that sets out to embed the microactions observed in the interlocking series of nested social spaces that shape them and give them sense. Such an ethnography allows us to avoid falling into one or another of the five fallacies of participant observation: interactionism, inductivism, populism, presentism, and the hermeneutic drift. And to move beyond Clifford Geertz’s “thick description” with the “thick construction” inspired by Pierre Bourdieu, whose mission is to construct scientifically the ordinary social construction of reality.
Abstract Allylic substitution reactions with acyclic α‐alkoxy ketones are catalyzed by a metallacyclic iridium complex to form products with contiguous stereogenic centers derived from the nucleophile and electrophile.
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
