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Soubeyrand-Lenoir, Estelle,Vagner, Christelle,Yoon, Ji Woong,Bazin, Philippe,Ragon, Florence,Hwang, Young Kyu,Serre, Christian,Chang, Jong-San,Llewellyn, Philip L. American Chemical Society 2012 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY - Vol.134 No.24
<P>The uptake and adsorption enthalpy of carbon dioxide at 0.2 bar have been studied in three different topical porous MOF samples, HKUST-1, UiO-66(Zr), and MIL-100(Fe), after having been pre-equilibrated under different relative humidities (3, 10, 20, 40%) of water vapor. If in the case of microporous UiO-66, CO<SUB>2</SUB> uptake remained similar whatever the relative humidity, and correlations were difficult for microporous HKUST-1 due to its relative instability toward water vapor. In the case of MIL-100(Fe), a remarkable 5-fold increase in CO<SUB>2</SUB> uptake was observed with increasing RH, up to 105 mg g<SUP>–1</SUP> CO<SUB>2</SUB> at 40% RH, in parallel with a large decrease in enthalpy measured. Cycling measurements show slight differences for the initial three cycles and complete reversibility with further cycles. These results suggest an enhanced solubility of CO<SUB>2</SUB> in the water-filled mesopores of MIL-100(Fe).</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/2012/jacsat.2012.134.issue-24/ja302787x/production/images/medium/ja-2012-02787x_0008.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ja302787x'>ACS Electronic Supporting Info</A></P>
Plasticity-damage model parameters identification for structural connections
Imamovic, Ismar,Ibrahimbegovic, Adnan,Knopf-Lenoir, Catherine,Mesic, Esad Techno-Press 2015 Coupled systems mechanics Vol.4 No.4
In this paper we present methodology for parameters identification of constitutive model which is able to present behavior of a connection between two members in a structure. Such a constitutive model for frame connections can be cast in the most general form of the Timoshenko beam, which can present three failure modes. The first failure mode pertains to the bending in connection, which is defined as coupled plasticity-damage model with nonlinear softening. The second failure mode is seeking to capture the shearing of connection, which is defined as plasticity with linear hardening and nonlinear softening. The third failure mode pertains to the diffuse failure in the members; excluding it leads to linear elastic constitutive law. Theoretical formulation of this Timoshenko beam model and its finite element implementation are presented in the second section. The parameter identification procedure that will allow us to define eighteen unknown parameters is given in Section 3. The proposed methodology splits identification in three phases, with all details presented in Section 4 through three different examples. We also present the real experimental results. The conclusions are stated in the last section of the paper.
Antiangiogenic-Like Properties of Fermented Extracts of Ayurvedic Medicinal Plants
Che´rif Rabhi,Guillaume Arcile,Le´on Cariel,Christine Lenoir,Je´rome Bignon,Joanna Wdzieczak-Bakala,Jamal Ouazzani 한국식품영양과학회 2015 Journal of medicinal food Vol.18 No.9
The three ayurvedic medicinal plants, Withania somnifera, Emblica officinalis, and Bacopa monnieri, were extracted by high-pressure static extraction using the Zippertex® technology. The extracts were mixed to reach quantifiable amounts of active compounds identified by high-pressure liquid chromatography-mass spectrometry (HPLC-MS) analysis. The mixture of extracts was incubated with resting cells of the fungus Beauveria bassiana ATCC 7159. The fermentation promoted the fluidization of the starting dense mixture, while HPLC monitoring evidenced the disappearance of glucogallin from E. officinalis extract and the concomitant increase in gallic acid content. Topical exposure of the chick embryo chorioallantoic membrane (CAM) to the nonfermented extract led to the extensive necrosis and destruction of the treated membrane. However, the fermented extract was shown to be free of any toxicity. Furthermore, compared with the untreated CAM, the fermented sample reduced CAM vascularization, suggesting its antiangiogenic potency. The innocuity of the fermented extract was demonstrated using the in vivo LD50 test, the morphological examination of internal organs of treated rats, as well as the evaluation of blood biomarkers of liver damage (aspartate aminotransferase and alanine aminotransferase). The fermented extract was developed as a nutraceutical antiangiogenic treatment of age-related macular degeneration and commercialized in an oral form named Ethnodyne-Visio™.