1,097 research outputs found
Chapter 6 Appendices
No full textThis book offers an innovative defense of Wilfrid Sellars’s notion of ideal truth.
Sellars adopts two attractive ideas about truth: the pragmatist idea that the concept of truth cannot be understood independently from the norms and practices we find ourselves with and the realist idea that there is one ultimate truth about how the world is. Sellars is thus committed both to an immanent notion of truth and an ideal notion of truth. This book discusses these countervailing tendencies and tries to reconcile them. The author’s defense of Sellars’s notion of truth minimizes problematic commitments while still being recognizably rooted in Sellars’s texts. Additionally, the author defends several innovative claims with respect to Sellars’s thinking, for example, about the relative unimportance of his controversial concept of pictorial adequacy and about the neglected significance of considerations concerning context-sensitive expressions in his thought.
"Wilfrid Sellars on Truth" will be of interest to scholars and advanced students working on Wilfrid Sellars, pragmatism, and questions about truth, naturalism, and scientific realism
NMR and kinetic studies of the interactions of [Au(<i>cis</i>-DACH)Cl<sub>2</sub>]Cl and [Au(<i>cis</i>-DACH)<sub>2</sub>]Cl<sub>3</sub> with potassium cyanide in aqueous solution
No full text<div><p>The interactions of [Au(<i>cis</i>-DACH)Cl<sub>2</sub>]Cl and [Au(<i>cis</i>-DACH)<sub>2</sub>]Cl<sub>3</sub> [where <i>cis</i>-DACH is <i>cis</i>-1,2-diaminocyclohexane] with enriched KCN were carried out in CD<sub>3</sub>OD and D<sub>2</sub>O, respectively. The reaction pathways of these complexes were studied by <sup>1</sup>H, <sup>13</sup>C, <sup>15</sup>N NMR, UV spectrophotometry, and electrochemistry. The kinetic data for the reaction of cyanide with [Au(<i>cis</i>-DACH)<sub>2</sub>]Cl<sub>3</sub> are <i>k</i> = 18 M<sup>−1</sup>s<sup>−1</sup>, ∆<i>H</i><sup>≠</sup> = 11 kJ M<sup>−1</sup>, ∆<i>S</i><sup>≠</sup> = −185 JK<sup>−1</sup> M<sup>−1</sup>, and <i>E</i><sub>a</sub> = 13 kJ M<sup>−1</sup> with square wave voltammetric (SWV) peak +1.35 V, whereas the kinetic data for the reaction of cyanide ion with [Au(<i>cis</i>-DACH)Cl<sub>2</sub>]Cl are <i>k</i> = 148 M<sup>−1</sup>s<sup>−1</sup>, ∆<i>H</i><sup>≠</sup> = 39 kJM<sup>−1</sup>, ∆<i>S</i><sup>≠</sup> = −80 JK<sup>-1</sup> M<sup>−1</sup>, and <i>E</i><sub>a</sub> = 42 kJM<sup>−1</sup> along with SWV peak +0.82 V, indicating much higher reactivity of [Au(<i>cis</i>-DACH)Cl<sub>2</sub>]Cl toward cyanide than [Au(<i>cis</i>-DACH)<sub>2</sub>]Cl<sub>3</sub>. The interaction of these complexes with potassium cyanide resulted in an unstable [Au(<sup>13</sup>CN)<sub>4</sub>]<sup>−</sup> species which readily underwent reductive elimination reaction to generate [Au(<sup>13</sup>CN)<sub>2</sub>]<sup>−</sup> and cyanogen.</p></div
CODE repro2 product series for the IGS
No full textCODE, the Center for Orbit Determination in Europe, is a joint venture of the following four institutions:
• Astronomical Institute, University of Bern (AIUB), Bern, Switzerland
• Federal Office of Topography swisstopo, Wabern, Switzerland
• Federal Agency of Cartography and Geodesy (BKG), Frankfurt a. M., Germany
• Institut für Astronomische und Physikalische Geodäsie, Technische Universität München (IAPG, TUM), Munich, Germany
It acts as a global analysis center of the International GNSS Service (IGS, Dow et al, 2009). The operational computations are performed at AIUB using the latest development version of the Bernese GNSS Software (Dach et al., 2015).
In this context the contribution to the IGS repro02 effort is generated considering only the GPS satellites between 1994 and 2001 as well as the GPS and GLONASS satellites from 2002 to the end of 2013
Synthesis, multiphase characterization, and helicity control in chiral DACH-linked oligothiophenes
No full textA new class of chiral oligothiophenes is described. Mono-, bi-, ter-, and quarterthiophenes have been linked to enantiopure trans- 1,2-cyclohexanediamine (DACH) via diamino or diimino moieties. The stereochemistry of DACH, the type of linker, and oligothiophene size determine the conformational flexibility of these molecules and consequently their molecular and supramolecular helicity in solution and in the solid state. The case of diaminobis(bithiophene), which inverts helicity and shows chiral amplification in the transition from solution to film, is described in detail. Based on the combined use of circular dichroism in solution and in the solid state, single-crystal/thin-film X-ray diffraction, and polarized optical microscopy, a working mechanism has been proposed to explain this unexpected behavio
Lanthanide-Based Complexes Containing a Chiral trans-1,2-Diaminocyclohexane (DACH) Backbone: Spectroscopic Properties and Potential Applications
No full textIn this minireview, we give an overview on the use of the chiral molecule trans-1,2-diaminocyclohexane (DACH) in several fields of application. This chiral backbone is present in a variety of metal complexes which are employed in (enantioselective) catalysis, chiral discrimination, molecular recognition and supramolecular chemistry. Metal extraction and biochemical and pharmaceutical applications also use the DACH molecule. This contribution is particularly focused on the interesting chemical-physical properties discussed so far in the literature concerning lanthanide-based complexes containing chiral ligands characterized by the presence of DACH in the structure. In particular, the interconnection between luminescence (total and circularly polarized), structure and thermodynamics of Eu(III), Tb(III) and Sm(III) complexes will be discussed also in light of their use as optical or chiroptical probes for the sensing of important analytes dissolved in aprotic and protic polar solvents. Several complexes show potential interest in the solid state as phosphors for light emitting devices or for the detection of volatile organic compounds
CODE rapid product series for the IGS
No full textCODE, the Center for Orbit Determination in Europe, is a joint venture of the following four institutions: Astronomical Institute, University of Bern (AIUB), Bern, Switzerland;Federal Office of Topography swisstopo, Wabern, Switzerland; Federal Agency of Cartography and Geodesy (BKG), Frankfurt a. M., Germany; Institut für Astronomische und Physikalische Geodäsie, Technische Universität München (IAPG, TUM), Munich, Germany.
It acts as a global analysis center of the International GNSS Service (IGS). The operational computations are performed at AIUB using the latest development version of the Bernese GNSS Software (Dach et al., 2015).
In this context a rapid solution series is generated considering all active GPS and GLONASS satellites. It contains 24 hours of observed orbits and published at the day after the observations
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