Conservatoire national des arts et métiers

About: Conservatoire national des arts et métiers is a education organization based out in Paris, France. It is known for research contribution in the topics: Population & Context (language use). The organization has 3573 authors who have published 7127 publications receiving 141430 citations. The organization is also known as: CNAM & Conservatoire des arts et métiers.

Two Lipoxygenases from Germinated Barley‐Heat and Kilning Stability

Abstract: Using ammonium sulfate precipitation followed by hydrophobic and ion exchange chromatography, two lipoxygenase isoenzymes, LOX 1 and LOX 2, were 18.3- and 44.5-fold purified from germinated barley, with 18 and 24% recovery of activity respectively. LOX 1 and LOX 2 were characterized by isoelectric points 4.9 and 6.4, and molecular weights of 90 kd and 110 kd, respectively. Apparent Km values for linoleic acid were 0.06 mM for LOX 1 and 0.18 mM for LOX 2. LOX 1 converted linoleic acid to 9 and 13 hydroperoxides at about 4:1, whereas the 13 hydroperoxide was the major product formed by LOX 2 (ratio 3:7). For both isoforms, thermal inactivation data indicated first order kinetics with activation energies influenced by ionic strength and pH. Isoenzymes composition was analyzed for three kilning schemes: the 1:3 ratio between LOX 1 and LOX 2 observed in germinated barley increased during the course of kilning.

Frequency-comb-referenced singly-resonant OPO for sub-Doppler spectroscopy.

Abstract: We present a widely-tunable, singly-resonant optical parametric oscillator, emitting more than 1 W between 2.7 and 4.2 μm, which is phase locked to a self-referenced frequency comb. Both pump and signal frequencies are directly phase-locked to the frequency comb of a NIR-emitting fs mode-locked fibre laser, linked, in turn, to the caesium primary standard. We estimate for the idler frequency a fractional Allan deviation of ∼ 3 × 10−12τ−1/2 between 1 and 200 s. To test the spectroscopic performance of the OPO, we carried out saturation spectroscopy of several transitions belonging to the ν1 rovibrational band of CH3I, resolving their electronic quadrupole hyperfine structure, estimating a linewidth better than 200 kHz FWHM for the idler, and determining the absolute frequency of the hyperfine components with a 50-kHz-uncertainty.

Pharmaceutical compositions containing 3-beta-hydroxylated 6,7-substituted steroid derivatives, and use thereof

Abstract: A pharmaceutical composition containing 7-hydroxylated derivatives of natural steroid hormones having, if necessary, a 3β hydroxyl function, for use as an immunity trigger or stimulant (hereinafter termed "immunity effector"), particularly for cell immunity. Said pharmaceutical compositions may also be used as anti-glucocorticoid agents.

Resource allocation for real time services using cooperative game theory and a virtual token mechanism in LTE networks

Abstract: In this paper a two level resource allocation scheme is proposed to enhance the Quality of Service (QoS) for multimedia services in LTE downlink system. It corresponds to a solution that combines cooperative game theory, a virtual token mechanism, and the EXP-RULE algorithm. By using cooperative game theory such as bankruptcy game and Shapley value, the proposed mechanism works by forming coalitions between flow classes to distribute bandwidth fairly. EXP-RULE algorithm has been modified to use a virtual token mechanism to improve its performance. By taking into account constraints such as Shapley value fairness and the virtual token robustness, the proposed mechanism can increase remarkably the performance for real time flows such as video and VoIP in downlink system. The performance evaluation is conducted in terms of system throughput, packet loss ratio (PLR), cell spectral efficiency and fairness index.

Analyse psychologique du mouvement : apport à la compréhension des TMS

Abstract: Les troubles musculo-squelettiques (TMS) posent un probleme de connais­sance double d’un probleme d’efficacite de leur prevention. a partir de notre experience de terrain, nous interrogeons la biomecanique du mouve­ment du point de vue de l’analyse psychologique de l’activite reelle. La notion de geste est redefinie afin de soutenir l’hypothese que l’hypersollicitation de l’organisme resulte de l’hyposollicitation de l’activite. En nous appuyant sur les travaux de Bernstein, nous proposons un modele d’analyse psychologique du mouvement postulant que mouvement, geste et automatisme sont trois aspects d’une meme realite psycho-physiologi­que. Ce modele nous permet d’explorer le developpement du geste realisa­ble. Nous trouvons que la variete des situations et le developpement des repeti­tions au-dela d’elles-memes permettent aux travailleurs de trouver des reponses adequates aux problemes moteurs poses par leur activite. A l’inverse, le developpement empeche enferme le geste dans des repetitions a l’identique, engageant les sujets vers des activites compulsives pathoge­nes. Le sous-developpement des repetitions plonge ses racines dans celui de l’activite professionnelle. La prevention des TMS devrait s’appuyer sur l’histoire des repetitions en multipliant les experiences gestuelles et les confrontations aux autres gestes possibles, les siens et ceux d’autrui dans le collectif de travail.