130,726 research outputs found
Systema philosophiae universae : publicae diiudicationi propositum ...
No full textpraeside P. Oswaldo Hespelin ... defendente ... D. Iosepho Claudio Dominico Maria Merlet de Treuheim ...anno salutis MDCCLXII. XV.. Kalend. Septemb. ...Disp., Kloster Weingarten, 176
Études littéraires sur les grands classiques latins, par M. Gustave Merlet, Paris, 1884, Hachette et Cie
No full textD. C. Études littéraires sur les grands classiques latins, par M. Gustave Merlet, Paris, 1884, Hachette et Cie. In: La revue pédagogique, tome 5, Juillet-Décembre 1884. pp. 364-365
Inventaire sommaire des archives départementales d'Eure-et-Loir, par Lucien Merlet.
No full textArbois de Jubainville Henri d'. Inventaire sommaire des archives départementales d'Eure-et-Loir, par Lucien Merlet.. In: Bibliothèque de l'école des chartes. 1866, tome 27. pp. 385-386
Les études littéraires sur les classiques français. Les classiques latins et les classiques grecs, de M. Gustave Merlet.
No full textD. C. Les études littéraires sur les classiques français. Les classiques latins et les classiques grecs, de M. Gustave Merlet.. In: Manuel général de l'instruction primaire : journal hebdomadaire des instituteurs. 52e année, tome 21, 1885. pp. 145-147
Characterisation of the structure, deuterium quadrupolar tensors, and orientational order of acenaphthene, a rigid, prochiral molecule, from the NMR spectra of samples dissolved in nematic and chiral nematic liquid crystalline solvents
No full textMolecules like acenaphthene which have a point group symmetry of C-2v behave as though their symmetry is C-2 when dissolved in chiral nematic liquid crystalline solvents. To quantify this effect a sample of perdeuterated acenaphthene dissolved in the chiral nematic solvent formed by dissolving poly-(gamma -benzyl-L-glutamate), PBLG, in CHCl3 has been studied by deuterium NMR spectroscopy. The quadrupolar splittings obtained were used to determine the orientational order parameters of acenaphthene-d(10) when dissolved in PBLG/CHCl3. To do this it was necessary to also record and analyse the proton and deuterium spectra given by a sample containing both acenaphthene and acenaphthene-d(10) in a non-chiral liquid crystalline solvent. The proton spectrum is very complex, and was analysed only after first recording and analysing the simpler H-1-{H-2} spectrum given by a sample of acenaphthene-d(6). This procedure finally yielded a set of dipolar couplings for the fully protonated molecule, which after correction for vibrational motion, were used to determine both the relative positions of the protons and the orientational order of the molecules. This information was then used to derive the quadrupolar coupling constants from the measured quadrupolar splittings. The lowering of the symmetry of the orientational distribution function is quantified by the angle alpha by which the principal axes of the molecular orientational order matrix of acenaphthene dissolved in PBLG/CHCl3 are rotated out of the plane defined by the aromatic ring. The values of alpha are in the range 1.5 +/- 0.1 degrees to 1.7 +/- 0.1 degrees for the temperature range 295-330 K
An investigation of the structure and bond rotational potential of some fluorinated ethanes by NMR spectroscopy of solutions in nematic liquid crystalline solvents
No full textNMR spectra of 1,2-dibromo-1,1-difluoroethane and 1-bromo-2-iodo-tetrafluoroethane dissolved in nematic liquid crystalline solvents have been analysed to yield the magnitudes and signs of the scalar couplings, J(ij), and total anisotropic couplings, T-ij, between all the H-1, F-19, and C-13 nuclei, except for those between two C-13 nuclei. The values obtained for Tij in principle contain a contribution from J(ij)(aniso), the component along the static applied magnetic field of the anisotropic part of the electron-mediated spin-spin coupling. Neglecting this contribution allows partially averaged dipolar couplings, D-ij, to be extracted from the T-ij, and these were used to determine the structure, orientational order, and the conformational distribution generated by rotation about the C-C bond. The values obtained are compared with the results of calculations by ab initio and density functional methods. The differences found are no greater than those obtained for similar compounds which do not contain fluorine, so that there is no definitive evidence for significant contributions from J(CF)(aniso) or J(FF)(aniso) in the two compounds studied
Selective detection of the proton NMR spectra of molecules containing rare spins at natural abundance in liquid crystalline samples
No full textIt is shown that the proton NMR spectra of molecules containing rare spins at natural abundance dissolved in a liquid crystalline solvent can be obtained free from the strong lines from the spectrum of the abundant isotopomer by the 2D HSQC NMR experiment. The technique can also give the individual chemical shifts of the rare spins, and, for a molecule containing another abundant nucleus, such as fluorine, the rare spin-F-19 total anisotropic couplings are also obtained. The usefulness of the technique is demonstrated for molecules containing C-13 as the rare spins
Liouville type results for local minimizers of the micromagnetic energy
No full textWe study local minimizers of the micromagnetic energy in small ferromagnetic 3d convex particles for which we justify the Stoner–Wohlfarth approximation: given a uniformly convex shape Ω⊂R3, there exist δc>0 and C>0 such that for 01, p≠d) is constant
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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