Synthesis of large pores zeolite by soft templating strategy in the presence of novel organic template

Zeolites have a great importance in catalytic process such as isomerization and alkylation. Large pores mordenite zeolite was hydrothemally prepared by soft templating strategy using N,N-dimethylaniline as a novel structure-directing agent. The synthetized mesoporous mordenite was characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), N2 physical adsorption (BET), and Fourier transform infrared spectroscopy (FTIR). XRD and FTIR have been used to inform on the mordenite structure. SEM shows the crystals morphology and expanded pore opening, and N2 physical adsorption confirms the presence of mesoporous channels. The results show that in presence of N,N-dimethylaniline as organic template, mesoporous mordenite can be succefully synthesized

Shell-model calculations of the spectroscopic properties of neutron-rich calcium isotopes around 40,48Ca cores

With the aim of predicting the possible existence of new magic numbers, we theoretically studied the recently available experimental data for spectroscopic properties of the neutron rich even-even calcium isotopes around Ca 40,48 doubly magic cores. The calculations were performed with the phenomenological interactions for fppn and HO model spaces using the nuclear structure code Nushell. The two-body matrix elements (TBMEs) of the new effective interaction KB3G48 were derived from the microscopic Kuo-Brown’s G-matrix interaction KB3GPN for Ca 40 core. The calculated energies 𝐸(21 +) of the first excited state, the ratio 𝑅4/2 of the excitation energies, the reduced electric transition probabilities 𝐵(𝐸2; 21 + → 01 +) and the ratio 𝐵4/2 of reduced transition probabilities are compared with the available experimental data. The results of this study are an attempt to demonstrate that 𝑁 = 32 or 𝑁 = 34 are new magic numbers for Ca isotopes.</jats:p

Identification des propriétés d’élasticité d’un polymère obtenu par fabrication additive SLS à partir d’une modélisation du volume élémentaire représentatif

International audienceThis paper deals with identification of linear elasticity properties of a PA12 polymer obtained by SLS process using FE modelling of a representative elementary volume (RVE). The analyzed PA12 polymer contains fire retardant additives as inclusions and porositiesinduced by the SLS process. A REV is constructed from micro-tomography images of the microstructure and meshing procedure to obtain the FE mesh. Using uniaxial tension and pure shear loadings in different directions of the REV, the main elasticity properties (Young modulus, Poisson ratio and shear modulus) are identified. It is shown the elasticity properties are direction-dependent(anisotropy). The Young modulus and Poisson ratio are close to that of the isotropic properties of the matrix, since the volume fraction of inclusions and voids are much lower against the matrix one. However the shear modulus in different directions is found lower than the matrix one by about 30%.Cet article traite de l’identification des propriétés élastiques du polymère PA12 obtenu par le procédé de fabrication additive SLS à partir d’une modélisation EF d’un volume élémentaire représentatif (VER). Le polymère PA12 analysé contient des additifs retardateurs de feu comme inclusions et des porosités induites par le procédé SLS. Un VER est construit à partir d’images tomographiques de la microstructure et d’une procédure de maillage pour mettre en place un modèle EF. En appliquant de la traction uniaxiale et du cisaillement simple selon différentes directions au VER, les principales propriétés d’élasticité (module de Young, coefficient de Poisson, module de cisaillement) sont identifiées. Il est constaté que ces propriétés dépendent de la direction de chargement (anisotropie). Le module de Young et le coefficient de Poisson sont proches de ceux de la matrice, du fait que la fraction volumique des inclusions et du vide sont beaucoup plus bas par rapport à celle de la matrice. Par contre, le module de cisaillement dans les différentes directions est plus faible par rapport à celui de la matrice d’environ 30%

Identification des propriétés effectives d’élasticité d’un polymère obtenu par fabrication additive SLS à partir d’une modélisation du volume élémentaire représentatif

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Identification des propriétés effectives d’élasticité d’un polymère obtenu par fabrication additive SLS à partir d’une modélisation du volume élémentaire représentatif

International audienceThis paper deals with identification of linear elasticity properties of a PA12 polymer obtained by SLSprocess using FE modelling of a representative elementary volume (RVE). The analyzed PA12polymer contains fire retardant additives as inclusions and porosities induced by the SLS process. AREV is constructed from micro-tomography images of the microstructure and meshing procedure toobtain the FE mesh. Using uniaxial tension and pure shear loadings in different directions of the REV,the main elasticity properties (Young modulus, Poisson ratio and shear modulus) are identified. It isshown the elasticity properties are direction-dependent (anisotropy). The Young modulus and Poissonratio are close to that of the isotropic properties of the matrix, since the volume fraction of inclusionsand voids are much lower against the matrix one. However the shear modulus in different directions isfound lower than the matrix one by about 30%.Cet article traite de l’identification des propriétés élastiques du polymère PA12 obtenu par le procédéde fabrication additive SLS à partir d’une modélisation EF d’un volume élémentaire représentatif(VER). Le polymère PA12 analysé contient des additifs retardateurs de feu comme inclusions et desporosités induites par le procédé SLS. Un VER est construit à partir d’images tomographiques de lamicrostructure et d’une procédure de maillage pour mettre en place un modèle EF. En appliquant dela traction uniaxiale et du cisaillement simple selon différentes directions au VER, les principalespropriétés d’élasticité (module de Young, coefficient de Poisson, module de cisaillement) sontidentifiées. Il est constaté que ces propriétés dépendent de la direction de chargement (anisotropie).Le module de Young et le coefficient de Poisson sont proches de ceux de la matrice, du fait que lafraction volumique des inclusions et du vide sont beaucoup plus bas par rapport à celle de la matrice.Par contre, le module de cisaillement dans les différentes directions est plus faible par rapport à celuide la matrice d’environ 30%

Stable Competitive Enzyme-Linked Immunosorbent Assay Kit for Rapid Measurement of 11 Active Beta-Lactams in Milk, Tissue, Urine, and Serum

Abstract Beta-lactams are used as veterinary drugs for the treatment of food-producing animals. For consumer protection, legislation is in place to set limits for their residues. An enzyme-linked immunosorbent assay (ELISA) was developed which allowed, in a single reaction, the class-specific measurement of 11 beta-lactams, with limits of detection below European maximum residue limits. Determinations were feasible in milk, tissue, urine, and serum with simple and rapid sample preparation. In this format, the specific capture antibodies were precoated on the microtiter plate and horseradish peroxidase-labeled conjugate was used to compete with free beta-lactams. The stability of the precoated microtiter plate and conjugate was at least 1 year when stored at 2 to 8°C; upon reconstitution, the conjugate was stable for 6 days at 2 to 8°C. The stability of lyophilized ampicillin standards was at least 6 months when stored at 2 to 8°C and at least 1 year when stored at 20°C. A low cross-reactivity, 3.6%, was observed with ampicillin with open beta-lactam ring relative to 100% for intact ampicillin. Generic recognition was shown by relative cross-reactivity values ranging from 22 (penicillin V) to 144% (nafcillin). Cross-reactivity for cephalosporins was &amp;lt;0.1%. Intra- and interassay precisions expressed as coefficient of variation were typically 2-8%. The inhibitory concentration with 50% binding for ampicillin was typically 2 ppb. Recovery for different spiked levels was &amp;gt;70% with all the matrixes.</jats:p

Identification des propriétés d’élasticité d’un polymère obtenu par fabrication additive SLS à partir d’une modélisation du volume élémentaire représentatif

International audienceThis paper deals with identification of linear elasticity properties of a PA12 polymer obtained by SLS process using FE modelling of a representative elementary volume (RVE). The analyzed PA12 polymer contains fire retardant additives as inclusions and porositiesinduced by the SLS process. A REV is constructed from micro-tomography images of the microstructure and meshing procedure to obtain the FE mesh. Using uniaxial tension and pure shear loadings in different directions of the REV, the main elasticity properties (Young modulus, Poisson ratio and shear modulus) are identified. It is shown the elasticity properties are direction-dependent(anisotropy). The Young modulus and Poisson ratio are close to that of the isotropic properties of the matrix, since the volume fraction of inclusions and voids are much lower against the matrix one. However the shear modulus in different directions is found lower than the matrix one by about 30%.Cet article traite de l’identification des propriétés élastiques du polymère PA12 obtenu par le procédé de fabrication additive SLS à partir d’une modélisation EF d’un volume élémentaire représentatif (VER). Le polymère PA12 analysé contient des additifs retardateurs de feu comme inclusions et des porosités induites par le procédé SLS. Un VER est construit à partir d’images tomographiques de la microstructure et d’une procédure de maillage pour mettre en place un modèle EF. En appliquant de la traction uniaxiale et du cisaillement simple selon différentes directions au VER, les principales propriétés d’élasticité (module de Young, coefficient de Poisson, module de cisaillement) sont identifiées. Il est constaté que ces propriétés dépendent de la direction de chargement (anisotropie). Le module de Young et le coefficient de Poisson sont proches de ceux de la matrice, du fait que la fraction volumique des inclusions et du vide sont beaucoup plus bas par rapport à celle de la matrice. Par contre, le module de cisaillement dans les différentes directions est plus faible par rapport à celui de la matrice d’environ 30%

Post-traumatic Mania Symptoms: About One Case

IntroductionPsychotraumatism can constitute for some people a real existential fracture, a real upheaval of the psychic organization.Immediate psychological reactions can vary from one-off and temporary reactions to far more severe and sometimes enduring reactions.Material and methodsWe collected the case of a patient who was hospitalised in April 2015 for manic symptoms in the immediate aftermath of a terrorist attack, with a review of the literature.Clinical caseThis is Mr. A. F., aged 38, with a personal history of AVP and a shooting wound following a terrorist attack. He had presented a psychomotor instability and an exaltation of the mood in the immediate aftermath of an ambush.Behavioural problems were identified by the psychiatric team during the group debriefing conducted at the HMPIT emergency room. During his hospitalisation, a chemotherapy based on thymoregulators, neuroleptics and anxiolytics was introduced.The evolution was marked by a significant regression of the manic syndrome after ten days, and the installation of a post-traumatic stress condition (PTSD). At the end of eight months, the patient was able to resume his work with long-term thymoregulatory treatment, a ban on weapons and safety posts.ConclusionManic episodes are rarely observed as an immediate post-traumatic reaction. Their occurrence does not prevent the subsequent installation of PTSD. Has psychic trauma revealed a latent psychosis? Is it a trauma-induced mood disorder?Disclosure of interestThe authors have not supplied their declaration of competing interest.</jats:sec