7,510 research outputs found
C. Cramer Florist, Interior of Store
No full textImage shows the display of flowers inside the Cramer flower shop.This image included in both the Shipler and Classified Photo Collections
[Carl Eduard Cramer, 1831-1901]
No full textEnthält verschiedene Nachrufe aus Zeitungen: Artikel in Neue Zürcher Zeitung vom 28. November 1901 (Autor unbekannt) ; Erinnerungen an Prof. Dr. C. Cramer von J. Hohl (Zeitung unbekannt) ; Professor Dr. Carl Eduard Cramer von C. Schröter in Neue Zürcher Zeitung vom 1. Dezember 190
[Freundschaftsbuch von Carl Eduard Cramer (1831-1901)] : 78 Porträts / 61 J.J. Hanhart s/m C. Cramer z. fr. Er
No full textDedikationssilhouette nach links von J. J. Hanhart, gewidmet Carl Eduard Cramer (1831-1901)Anonyme/r Künstler/inHandschriftliche Widmung in Feder unterhalb des Bildes "J. J. Hanhart s[eine]m C. Cramer z. fr. Er. [i.e.: zur freundlichen Erinnerung]"Aus der Sammlung Carl Eduard Cramer Exemplar der Zentralbibliothek Zürich, Graphische Sammlung und Fotoarchi
Aegisthus LINNAEUS OF CRAMER 1777
No full textAEGISTHUS LINNAEUS OF CRAMER, 1777 Pap[ilio] Eq[ues] Achiv[us] aegistus, Cramer, 1777: 15, 147, pl.106, figs C, D [original plate 72, figs E, E] (incorrect subsequent spelling). China. Papilio Eques Achivus agamemnon, Stoll, 1782b: 3 [No. 25]. Material examined. No potential Cramer specimens located. Identity. Graphium (s.s.) a. agamemnon (Linnaeus, 1758).Published as part of Chainey, John E., 2005, The species of Papilionidae and Pieridae (Lepidoptera) described by Cramer and Stoll and their putative type material in the Natural History Museum in London, pp. 283-337 in Zoological Journal of the Linnean Society 145 (3) on page 292, DOI: 10.1111/j.1096-3642.2005.00184.x, http://zenodo.org/record/543509
C. Cramer Florist p.2
No full textCramer Floral Company\u27s Christmas window, December 24, 1925.This photo included in both the Shipler and Classified Photo Collections
Influence of first and second coordination environment on structural Fe(II) sites in MIL-101 for C−H bond activation in methane
No full textDivalent iron sites in tri-iron oxo-centered metal nodes in metal−organic frameworks (MOFs) catalyze light alkane oxidation. The first two steps of the reaction sequence, which are also the most energetically demanding ones, are the formation of the active species, Fe(IV)=O, by N2O decomposition and subsequent C−H bond cleavage. We have employed Kohn−Sham density functional methods to explore how modification of the microenvironment around the Fe(II) center can modulate its catalytic activity, akin to what noted in metalloenzymes. We have varied the substituents on the organic linker of the MIL-101(Fe) MOF, as a way to modulate the energy barriers associated with the first two steps of the methane to methanol reaction. The calculations show that varying substituents has a minimal electronic effect on the iron center and its first coordination shell. However, their proximity to the active site can modify the barriers by 20%. Hydrogen bond donors can lower both barriers, such that the resulting Fe(IV)=O species are simultaneously more stable and more reactive than those of the parent MOF. The screening of a large set of systems allowed us to establish rules for the selection of second coordination shell elements to improve the reactivity of oxoferryl-based catalysts: (i) functionality with a low pKa or large positive electrostatic potential, (ii) a distance around 1.5 Å between the oxoferryl and any atom of the ring substituent, and (iii) low conformational flexibility of the added substituent
Theoretical Models on the Cu2O2 Torture Track. Mechanistic Implications for Oxytyrosinase and Small-molecule Analogs
No full textAccurately describing the relative energetics of alternative bis(μ-oxo) and μ-η2:η2 peroxo isomers of Cu2O2 cores supported by 0, 2, 4, and 6 ammonia ligands is remarkably challenging for a wide variety of theoretical models, primarily owing to the difficulty of maintaining a balanced description of rapidly changing dynamical and nondynamical electron correlation effects and a varying degree of biradical character along the isomerization coordinate. The completely renormalized coupled-cluster level of theory including triple excitations and extremely efficient pure density functional levels of theory quantitatively agree with one another and also agree qualitatively with experimental results for Cu2O2 cores supported by analogous but larger ligands. Standard coupled-cluster methods, such as CCSD(T), are in most cases considerably less accurate and exhibit poor convergence in predicted relative energies. Hybrid density functionals significantly underestimate the stability of the bis(μ-oxo) form, with the magnitude of the error being directly proportional to the percentage Hartree−Fock exchange in the functional. Single-root CASPT2 multireference second-order perturbation theory, by contrast, significantly overestimates the stability of bis(μ-oxo) isomers. Implications of these results for modeling the mechanism of C−H bond activation by supported Cu2O2 cores, like that found in the active site of oxytyrosinase, are discussed
Título: Canonicarum quaestionum utriusque fori tam exterioris quàm interioris animae liber tertius
No full textMarca tip. en portSign.: ¶\p4\s, A-2E\p6\s, 2F\p4\s, A-B\p6\s, C\p4\sTexto a dos colSign.: ¶\p4\s, A-Z\p8\s, 2A-2E\p8\s, 2F\p4\s, A-B\p6\s, C\p4\
Vertheidigung der Katholiken gegen den holländischen Recensenten, in Betreff der seltenen Erscheinungen welche statt finden bey Anna Catharina Emmerich Augustinerin zu Dülmen; und ihres Glaubens an Mirakel im neunzehnten Jahrhundert : aus dem Holländischen übersetzt (mit der illum. Abbildung der A. C. Emmerich)
No full text[Gesehen, Amsterdam den 4. Dezember 1815. J. Cramer, Erzpriester]Vorlageform des Erscheinungsvermerks: bey J. H. Ph. Dehn
Computing the Cramer-Rao bound of Markov random field parameters: Application to the Ising and the Potts models
No full textThis letter considers the problem of computing the Cramer–Rao bound for the parameters of a Markov random field. Computation of the exact bound is not feasible for most fields of interest because their likelihoods are intractable and have intractable derivatives. We show here how it is possible to formulate the computation of the bound as a statistical inference problem that can be solve approximately, but with arbitrarily high accuracy, by using a Monte Carlo method. The proposed methodology is successfully applied on the Ising and the Potts models
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