140 research outputs found
PERTURBATION ANALYSIS IN THE ASUNDI SYSTEM OF ) AND IN THE BALLIK-RAMASY SYSTEM OF
No full textAuthor Institution: Address of Amiot and Islami: Laboratoire de Physique Mol\'eculaire et Optique Atmosph\'erique, CNRS, B\^{a}t. 221, Campus d'Orsay, 91405 Orsay Cedex, FranceThe molecules were produced by a microwave discharge through or mixtures. The spectra were recorded in Laboratoire Aim\'e Cotton (Orsay) by high resolution Fourier transferm spectroscopy. Very strong perturbations (greater than ) were deteceted during the rotational analysis of the Asundi system. The vibrational levels , of the state interact respectively with the , levels. The theoretical model we have used inculde second order spin-orbit and spin-rotation interactions parameters in order to reproduce the observed perturbed wavenumbers to the F.T.S. accuracy (about ). A similar work was performed for the Ballik-Ramsay system interactions. For the three molecules, about 11600 wavenumbers were reduce with a R.M.S. Accurate molecular constants and interaction parameters were . The variation of the electronic parameters with internulear distance will be discussed. C. Amiot and K. Islami, J. Mol. Spectrosc. (to appear) 2 K. Islami and C. Amiot, J Mol. Spectrose. (to appear)
HIGH RESOLUTION FOURIER SPECTROSCOPY OF THE LASER EXCITED FLUORESCENCE SPECTRUM: FIVE NEW ELECTRONIC STATES
No full text C. AMIOT, C. CREPIN, J. VERGES. Chem. Phys. Lett. 98, 608 (1983) C. AMIOT, C. CREPIN, J. VERGES. Chem. Phys. Lett. (accepted) C. AMIOT, C. CREPIN, J. VERGES. J. Mol. Spectrosc. (submitted)Author Institution: Laboratoire Aim\'{e}-Cotton - CNRS II; Laboratoire de Physique Mol\'{e}culaire et d'Optique Atmosph\'{e}rique, B\^{a}timent 221, Campus d'OrsayThe fluorescence of was observed inside a heat pipe oven which was operated at . The spectra were recorded at high resolution with a Fourier transform Interferometer. The fluorescence excited by the and lasers was observed mainly in the spectral regions and also near the laser lines. The molecular constants of the pumped state where deduced from an analysis of the rotational relaxations and also thanks to the great number of pumped rotational levels. Molecular constants for three gerade states: and were derived from the study of the fluorescence spectra [1]. When using the ring dye laser, very high vibrational levels of the (2) state were observed. Triplets in the region were assigned to the fluorescence from the state to the component of the lowest state
Derived invariants for surface cut algebras II: the punctured case
No full text32 pagesInternational audienceFor each algebra of global dimension 2 arising from the quiver with potential associated to a triangulation of an unpunctured surface, Amiot-Grimeland have defined an integer-valued function on the first singular homology group of the surface, and have proved that two such algebras of global dimension 2 are derived equivalent precisely when there exists an automorphism of the surface that makes their associated functions coincide. In the present paper we generalize the constructions and results of Amiot-Grimeland to the setting of arbitrarily punctured surfaces. As an application, we show that there always is a derived equivalence between any two algebras of global dimension 2 arising from the quivers with potential of (valency at least 2) triangulations of arbitrarily punctured polygons. While in the unpunctured case the quiver with potential of any triangulation admits cuts yielding algebras of global dimension at most 2, in the case of punctured surfaces the QPs of some triangulations do not admit cuts, and even when they do, the global dimension of the corresponding degree-0 algebra may exceed 2. In this paper we give a combinatorial characterization of each of these two situations
Robotic Versus Laparoscopic Gastric Resection for Primary Gastrointestinal Stromal Tumors >5 cm: A Size-Matched and Location-Matched Comparison
No full textThis study compared robotic (RR) and laparoscopic resection (LR) for primary gastrointestinal stromal tumors (GISTs) of the stomach >5 cm. Twelve consecutive patients who underwent RR from 2012 to 2015 were matched for tumor size and location with 24 patients who underwent LR from 2000 to 2012. The median tumor size was 7.1 cm (range, 5.5 to 11.5). GISTs were resected by wedge resection (91.7%) or distal gastrectomy. The median RR operative time was longer than that of LR (162.5 vs. 130 min, respectively; P=0.004). Only 1 LR patient required conversion. The time to flatus and hospital stay were similar between groups. Overall, 3 patients developed minor postoperative complications that were medically treated. Mortality was nil. All resections were R0. No difference was observed in the incidence of recurrence. RR was significantly more expensive (+21.6%) than LR. RR appears to be safe and feasible for GISTs>5 cm, but is associated with longer operative times and greater costs
HIGH RESOLUTION SPECTRA OF NITROUS OXIDE AND OF THE ISOTOPIC SPECIES, IN THE REGION
No full textC. Amiot and G. Guelachvili, J. Mol Spectrosc. (to be published)Author Institution: Laboratoire de Physique, Mol\'{e}culaire et d'Optique Atmosph\'{e}rique B\^{a}timent 221.High resolution spectra of nitrous oxide and of the three isotopic species , have been recorded with the Fourier transform interferometer of Laboratoire Aim\’{e} Cotton, Absorption path lengths ranging from 10M to 50M were employed with gas pressures of 1T to 100T for the normal form and equal to 3T for the isotopes. The rotational analysis of the bands was performed with a line identification program written for IBM 370/168 computer. Forty-eight Levels of twenty-eight levels for each isotopic species were analyzed. Several Local Coriolis resonances have been found in the course of the analysis. These data are used in the determination of the potential function with the programs of A. Chedin and Z, Cilha for linear XYZ molecules
Current, new and future biological agents on the horizon for the treatment of inflammatory bowel diseases
No full textInternational audienceBiological agents for inflammatory bowel diseases (IBD) targeting tumor necrosis factor (TNF) have changed the way to treat IBD refractory to standard medications and allowed us to reach new therapeutic goals such as mucosal healing and deep remission. A better understanding of the components of the pathological processes that are a hallmark of IBD has led to the development of a new family of biological agents in Crohn’s disease and ulcerative colitis. Biosimilars, which are copy versions of currently licensed biological agents, will be soon available. The biosimilar of infliximab is as effective and as safe as its originator in rheumatologic conditions, while a new anti-TNF agent, namely golimumab, has been recently approved for refractory ulcerative colitis. Beyond TNF blockers, anti-adhesion molecules appear to be a potent drug class for IBD. Vedolizumab was recently approved for both Crohn’s disease and ulcerative colitis. Numerous other compounds are in the pipeline. Ustekinumab looks very promising for Crohn’s disease. Smad7 antisense oligonucleotide might enrich our armamentarium if preliminary data are confirmed in upcoming clinical trials. Herein, we review the efficacy and safety of new and emerging biological agents that are currently investigated in IBD clinical trials
Editorial: determining disability in inflammatory bowel disease—“See(k) and you shall find”. Authors' reply
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