Work Organisation and Innovation - Case Study: FAVI, France

[Excerpt] FAVI is an SME based in Hallencourt in the Somme, a département in the Picardy region of France. It is a pressure die-casting company specialising in copper alloys that currently employs 406 people. The company designs, optimises, smelts, machines and assembles copper alloy pieces. Interns can at times account for 10% of the workforce. Founded in 1957, this société anonyme (public limited company) with a capital of €960,000, is part of the AFICA Group, which purchased FAVI in 1971

Observations of the low-lying Ω = 1/2 states of nickel deuteride, NiD

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La "Loi" de Zahavi, quelle pertinence pour comprendre la contraction ou la dilatation des espaces-temps de la ville ?

Dans le cadre du premier rapport de recherche, le travail de Zahavi est étudié afin d'énoncer clairement la conjecture de Zahavi et de comprendre les objectifs de son travail. Dans un second temps, le rapport tente de construire un premier cadre de réflexion sur la signification et les interprétations d'une régularité de comportement. Enfin, quelques pistes de critiques sont apportées par le croisement du système de réflexion sur les régularités, les critiques théoriques établies sur le travail de Zahavi et d'autres travaux empiriques relatifs aux budgets de transport.Budgets-temps de transport ; conjecture de Zahavi ; comportement de mobilité

LASER EXCITATION SPECTROSCOPY OF 58^{58}NiH IN A MAGNETIC FIELD

Author Institution: LASIM, Universite Lyon 1 \& CNRS, 43 Bd du 11 novembre 1918, F-69622 Villeurbanne, France; Department of Physics and Center for Laser, Atomic, and Molecular Sciences, University of New Brunswick, Fredericton, Canada E3B 5A3Recent laboratory measurements of isotopologue $^{58}$NiH by laser excitation around 17000$-$18000 cm$^{-1}$ in a magnetic field have allowed us to study several electronic systems of this molecule. Zeeman patterns were analysed using literature values for ground state Lande factors (1997) 4179}. Effective electronic Lande factors g_{\emph{eff}} have been determined. They show strong variation with parity in the rotational levels in some $\Omega'$=3/2 states, giving evidence for extensive mixing between excited electronic states. \newline %\begin{table}[h] % \scriptsize \begin{center} \begin{tabular}{|c|c|c|c|c|} \multicolumn{5}{c}{Effective electronic Lande factors g_{\emph{eff}}} \\ \multicolumn{5}{c}{}\\ \hline &\multicolumn{2}{|c|}{$E(\Omega=3/2),v=1$} & \multicolumn{2}{|c|}{$I(\Omega=3/2),v=0$}\\ \hline $J$ & $e$ & $f$ & $e$ & $f$ \\ \hline 1.5 & 1.058 & 1.142 & 1.640 & 1.638 \\ 2.5 & 0.992 & 1.365 & 1.937 & 1.895 \\ 3.5 & 0.844 & 1.737 & 2.371 & 2.294 \\ 4.5 & 0.587 & 2.238 & 2.870 & 2.734 \\ 5.5 & 0.415 & 2.933 & 3.552 & 3.328 \\ 6.5 & 0.233 & 3.671 & 4.326 & 4.110 \\ \hline \end{tabular} \end{center} % aption{Effective electronic Lande factors $g_{eff}$} %\end{table

The spectrum of N₂ from 4,500 to 15,700 cm⁻¹ revisited with PGOPHER

International audienceUsing a reference molecular atlas to ensure self-consistency of wavelength calibration is widespread practice. Boesch & Reiners (Astronomy & Astrophysics 582 A43 (2015)) reported a line list from a discharge of molecular nitrogen from 4500 to 11000 cm −1 for this purpose. With a hollow-cathode discharge source, we have extended the experimental spectrum up to 15700 cm −1 , to include the range of Ti:sapphire lasers, since the density of N 2 lines is greater than atomic atlases in common use. Recognizing that experimental conditions can vary, we have also analysed the spectra (comprising several B ³Π g-A ³Σ u + , B' ³Σ u −-B ³Π g , and W ³Δ u-B ³Π g N 2 bands) with standard Hamiltonians, so that any part of the discharge spectrum 4500-15700 cm −1 can be simulated. Parameters are given to do this with the spectral simulation and analysis package PGOPHER. (C. Western, J. Quant. Spectrosc. Rad. Transf., 186, 221 (2016)). The analysis also included high-level ab initio calculations of potential energy curves, transition moments and spin-orbit coupling constants and these were used in preparing the model, extending the potential range of applicability. The results are available in a variety of formats to suit possible applications, including the experimental spectrum in ASCII, a detailed line list with positions and Einstein A coefficients, and a PGOPHER input file to synthesize the spectrum at selectable temperature and resolution.

Sequential analysis of global gene expression profiles in immature and in vitro matured bovine oocytes: potential molecular markers of oocyte maturation

Abstract Background Without intensive selection, the majority of bovine oocytes submitted to in vitro embryo production (IVP) fail to develop to the blastocyst stage. This is attributed partly to their maturation status and competences. Using the Affymetrix GeneChip Bovine Genome Array, global mRNA expression analysis of immature (GV) and in vitro matured (IVM) bovine oocytes was carried out to characterize the transcriptome of bovine oocytes and then use a variety of approaches to determine whether the observed transcriptional changes during IVM was real or an artifact of the techniques used during analysis. Results 8489 transcripts were detected across the two oocyte groups, of which ~25.0% (2117 transcripts) were differentially expressed (p < 0.001); corresponding to 589 over-expressed and 1528 under-expressed transcripts in the IVM oocytes compared to their immature counterparts. Over expression of transcripts by IVM oocytes is particularly interesting, therefore, a variety of approaches were employed to determine whether the observed transcriptional changes during IVM were real or an artifact of the techniques used during analysis, including the analysis of transcript abundance in oocytes in vitro matured in the presence of α-amanitin. Subsets of the differentially expressed genes were also validated by quantitative real-time PCR (qPCR) and the gene expression data was classified according to gene ontology and pathway enrichment. Numerous cell cycle linked (CDC2, CDK5, CDK8, HSPA2, MAPK14, TXNL4B), molecular transport (STX5, STX17, SEC22A, SEC22B), and differentiation (NACA) related genes were found to be among the several over-expressed transcripts in GV oocytes compared to the matured counterparts, while ANXA1, PLAU, STC1and LUM were among the over-expressed genes after oocyte maturation. Conclusion Using sequential experiments, we have shown and confirmed transcriptional changes during oocyte maturation. This dataset provides a unique reference resource for studies concerned with the molecular mechanisms controlling oocyte meiotic maturation in cattle, addresses the existing conflicting issue of transcription during meiotic maturation and contributes to the global goal of improving assisted reproductive technology

Exploration laser a haute resolution : fluorescence induite par laser de dimeres alcalins observee par spectrometrie de Fourier, et mecanismes reactionnels intervenant dans les lasers chimiques

SIGLECNRS T 64210 MIC / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

Fluorescence laser intracavité et spectrométrie de Fourier (développements expérimentaux et application au radical NiH)

The main issue of this work is the experimental development of an intracavity spectroscopic method aims at enhanced the sensibility of Laser Induced Fluorescence (LIF) couplet to High Resolution Fourier Transform Spectroscopy (LIF-FTS). This enhancement is achieved by an external build-up cavity coupled to a Fourier transform spectrometer. The molecular source is inserted in the cavity which stock the energy of a single mode CW dye laser. The build-up conditions are maintained by an opto-electronic servo-loop. The intracavity power enhancement allows the observation of invisble molecular quantum level in standard LIF experiments. This technique (ICLIF) is validate by the study of an astrophysical radical : NiH, produced in a new changeable hollow cathode source developed during this workLe thème central de ce travail est le développement expérimental d une méthode spectroscopique intracavité laser visant à augmenter la sensibilité des expériences de fluorescence induite par laser (LIF) et analysée par spectrométrie par transformée de Fourier (FTS) haute résolution. Cette augmentation passe par la réalisation du couplage d une cavité externe résonante avec la technique FTS. L échantillon moléculaire est placé à l intérieur de la cavité qui stocke l énergie d un laser à colorant mono-mode accordable en étant maintenue en permanence en résonance grâce à un système optoélectronique d asservissement. L accroissement de puissance intracavité permet alors l observation de niveaux quantiques moléculaires inaccessibles par les méthodes LIF traditionnelles. Cette technique (ICLIF) est validée par l étude du radical d intérêt astrophysique NiH produit par une nouvelle source polyvalente à pulvérisation cathodique, développée en parallèle dans le cadre de ce travailLYON1-BU.Sciences (692662101) / SudocSudocFranceF

Observation of low-lying electronic states of NiD with multi-isotope analysis

International audienceResolved laser induced fluorescence spectra of 58 NiD, recorded at Doppler resolution between 11000 and 18000 cm-1 have established more than 200 term energies in two of the three strongly interacting, low-lying states (2 Δ, 2 Π, 2 Σ +) of NiD, associated with an Ni + (3d 9)D-configuration. Our observations span v= 0-5 in the lowest spin-orbit component of the ground state, X 2 Δ5/2, v = 0-3 in X 2 Δ3/2 and v = 0-1 in the lower component of the W 2 Π3/2 state. Collisional processes populate several neighbouring excited states, allowing us also to locate the first rotational levels of A(Ω = 5/2) v = 1, I(Ω = 3/2) v = 0 and E(Ω = 3/2) v = 1 at 16664.8, 17367.3 and 17508.1 cm-1 respectively. Spin-orbit and rotation-electronic interactions are strong in NiD (as in NiH), and with no direct observation of either of the Ω" =1/2 states, meaningful representations of the low-lying energy levels is difficult. We have therefore attempted a global, multi-isotope fit to reproduce the term energies of the known term energies of NiD and 58,60,62 NiH (where some Ω" =1/2 levels are known). Dunham-type parameters have been used to represent the unperturbed 2 Δ, 2 Π and 2 Σ + states, with off-diagonal matrix elements (treating spin-orbit, Land S-uncoupling effects) based on Ni + atomic properties. Born-Oppenheimer breakdown terms were included in the model. The equilibrium bond lengths for 58 NiH/ 58 NiD are 1.4545(1)/1.4559(1) Å for the X 2 Δ state and 1.5094(2)/1.5083(2) Å for the W 2 Π state

Work Organisation and Innovation - Case Study: FAVI, France

[Excerpt] FAVI is an SME based in Hallencourt in the Somme, a département in the Picardy region of France. It is a pressure die-casting company specialising in copper alloys that currently employs 406 people. The company designs, optimises, smelts, machines and assembles copper alloy pieces. Interns can at times account for 10% of the workforce. Founded in 1957, this société anonyme (public limited company) with a capital of €960,000, is part of the AFICA Group, which purchased FAVI in 1971.EF_FAVI.pdf: 3853 downloads, before Oct. 1, 2020