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The separation of propylene and propane is a challenging task in petroleum refineries due to the similar molecular sizes and physical properties of two gases. Composite Poly(ether-block-amide) (Pebax-1657) membranes incorporated with silver tetra fluoroborate (AgBF4) in concentrations of 0-50% of the polymer weight were prepared by solution casting and solvent evaporation technique. The membranes were characterized by Scanning Electron Microscopy (SEM), Fourier Transform InfraRed (FTIR) and wide-angle X-ray Diffraction (XRD) to study surface and cross-sectional morphologies, effect of incorporation on intermolecular interactions and degree of crystallinity, respectively. Experimental data was measured with an indigenously built high-pressure gas separation manifold having an effective membrane area of 42 cm2. Permeability and selectivity of membranes were determined for three different binary mixtures of propylene-propane at pressures varying in the range 2-6 bar. Selectivity of C3H6/C3H8 enhanced from 2.92 to 17.22 and 2.11 to 20.38 for 50/50 and 66/34 C3H6+C3H8 feed mixtures, respectively, with increasing loading of AgBF4. Pebax membranes incorporated with AgBF4 exhibit strong potential for the separation of C3H6/C3H8 mixtures in petroleum refineries.

The international nature of the English language has affected many communities across the globe and this has led to the emergence of varieties of English, specifically to meet the needs of non-native speakers of English. For Muslim speakers, Islamic English has been proposed which aims to maintain Arabic terms in the English language when there is an absence of equivalent English words. An attempt to translate would lead to distortion in meanings. This paper aims to highlight the presence of Islamic English employed by a prominent international Islamic speaker. Content analysis method is employed. The findings indicate the functions of Islamic English in the speaker’s talks are to provide the accurate meaning of the terms, correct misconceptions and lack of equivalent word in the English language, hence the need for Islamic English for Muslim speakers of English.

This research paper describes the steps used to design an alternative metasurface which is based on Circular Complementary Split Ring (CCSR) formation at 5.8 GHz. All the 3D modelling was conducted using specialized EM simulation software that utilizes Eigen algorithm to solve different frequency modes that can resonate within the CCSR structure itself. The final design will be then fabricated using a precise laser CNC machine to achieve a better dimension as closely as possible to the simulation dimension. By using laser CNC, this step will able to overcome generic PCB design issue related to via’s placement, signal integrity, power integrity and multilayer designs. Completed CCSR metasurface will be able to mitigate or block unwanted EM mode from flowing to its neighbouring sensitive area which can affect the entire component performance due to unseen harmonics.

This article is an attempt at cross reading of three novels and an account of youth thus belonging to four authors: Rachid Boudjedra, J-m-g Clézio, Amin Zaoui, Nelly Arcan. A geocritic reading since the desert is the space represented in manner géocentré and multifocale. A reading which wants to be especially ecopoetic insofar as we try to release an ecological ethics behind these aesthetic productions. Nelly Arcan predicts a future with the desert climate in the world. We try to release the literary representations of this desert as a future possible vital space. A topographic space of the ecological disaster that humanity passes very close to more and more. [ABSTRACT FROM AUTHOR]

Objective: Parenteral nutrition constitutes a crucial advance in intensive care, it is used when the gastrointestinal system is not functional. Parenteral nutrients include macronutrients and micronutrients, delivered via two-in-one or all-in-one systems. Stability is crucial and is assessed by physicochemical, microbiological and galenic stability. This study aims to analyze the galenic stability of a parenteral lipid emulsion after expiration. Methods: 156 expired parenteral nutrition sachets were donated. During the 6 months of expiry, the analysis of galenic stability included: visual verification, droplet size, polydispersity index as well as Zeta potential. Results: During the 6 months of studies after expiration, the visual appearance of the emulsion did not change. Droplet sizes (102 nm to 397.05 nm) and Zeta potential (-23.73 mV to -20.05 mV) also remained within standards. Conclusion: The galenic stability of certain parenteral nutrition formulations can extend beyond the expiration date indicated by the manufacturers. This discovery opens up new prospects for the use of drugs in intensive care units, particularly in resource-limited settings where wastage of medical products is a major concern. The use of parenteral nutrition solutions beyond their expiration date could lead to substantial savings, by reducing waste and optimizing stock utilization. [ABSTRACT FROM AUTHOR]

Copyright of Sang Thrombose Vaisseaux is the property of John Libbey Eurotext Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In ideal Topography for a characterized aggression, Rachid Boudjedra represents an illiterate emigrant lost in the maze of the Parisian subway. The reader follows the errance of this emigrant in search of his drop point writing on a bit of paper. At the end of long odyssée, it is found mortally attacked by a group of racists in exit of the subway. Our analysis based on works of Gilbert Durand, Umberto Eco, Deleuze and Guattari, Ethnocritic and urban semiotics, wants to be a description of this allegory of the modern world represented by the Parisian subway. An allegory that the writing that us of labyrinthian practised by the author also represents at the scriptural level. [ABSTRACT FROM AUTHOR]

Copyright of Cahiers Santé - Médecine Thérapeutique is the property of John Libbey Eurotext Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)