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10 results on '"Kadoun, A."'

1. Monte Carlo simulation of the electron beam scattering un der water vapor environment at low energy

Author

Mansour, O., KADOUN, A.-E., Khouchaf, L., Mathieu, C., Département de pharmacochimie moléculaire (DPM), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Université Djilali Liabès [Sidi-Bel-Abbès], École des Mines de Douai (Mines Douai EMD), Institut Mines-Télécom [Paris] (IMT), Institut Pluridisciplinaire Hubert Curien (IPHC), and Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDE]Environmental Sciences, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2013

2. Monte Carlo simulation of the electron beam scattering un der water vapor environment at low energy

Author

Mansour, O., KADOUN, A.-E., Khouchaf, L., Mathieu, C., Département de pharmacochimie moléculaire (DPM), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Université Djilali Liabès [Sidi-Bel-Abbès], École des Mines de Douai (Mines Douai EMD), Institut Mines-Télécom [Paris] (IMT), Institut Pluridisciplinaire Hubert Curien (IPHC), and Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDE]Environmental Sciences, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2013

3. Density functional conformational study of 2‐O‐sulfated 3,6 anhydro‐α‐D‐galactose and of neo‐κ‐ and ι‐carrabiose molecules in gas phase and water

Author

Majda Sekkal-Rahal, Noreya Bestaoui-Berrekhchi-Berrahma, Adlane Sayede, A. Kadoun, N. Yousfi, Philippe Derreumaux, Michael Springborg, Laboratoire de biochimie théorique [Paris] (LBT (UPR_9080)), Institut de biologie physico-chimique (IBPC (FR_550)), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), UCCS Équipe Couches Minces & Nanomatériaux, Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut de biologie physico-chimique (IBPC (FR_550)), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille-Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Université Paris Diderot - Paris 7 (UPD7)-Institut de biologie physico-chimique (IBPC), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Unité de Catalyse et de Chimie du Solide - Site Artois (UCCS Artois), Université d'Artois (UA)-Université de Lille, Sciences et Technologies-Ecole Centrale de Lille-Ecole Nationale Supérieure de Chimie de Lille (ENSCL)-Centre National de la Recherche Scientifique (CNRS), Unité de Catalyse et de Chimie du Solide - UMR 8181 (UCCS), and Université d'Artois (UA)-Ecole Centrale de Lille-Ecole Nationale Supérieure de Chimie de Lille (ENSCL)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)

Subjects
Ab initio, Disaccharide, Molecular Dynamics Simulation, Carrageenan, 010402 general chemistry, 01 natural sciences, Molecular mechanics, Catalysis, Inorganic Chemistry, chemistry.chemical_compound, Computational chemistry, 0103 physical sciences, Carbohydrate Conformation, Molecule, [CHIM]Chemical Sciences, Physical and Theoretical Chemistry, Adiabatic process, Conformational isomerism, Basis set, ComputingMilieux_MISCELLANEOUS, Aqueous solution, 010304 chemical physics, Chemistry, Organic Chemistry, Galactose, Water, [CHIM.MATE]Chemical Sciences/Material chemistry, 0104 chemical sciences, Computer Science Applications, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, Computational Theory and Mathematics, Quantum Theory, Thermodynamics, Gases
Abstract

We examined the conformational preferences of the 2-O-sulfated-3,6-α-D-anhydrogalactose (compound I) and two 1,3 linked disaccharides constituting-κ or ι-carrageenans using density functional and ab initio methods in gas phase and aqueous solution. Systematic modifications of two torsion angles leading to 324 and 144 starting geometries for the compound I and each disaccharide were used to generate adiabatic maps using B3LYP/6-31G(d). The lower energy conformers were then fully optimized using B3LYP, B3PW91 and MP2 with several basis sets. Overall, we discuss the impact of full relaxation on the energy and structure of the dominant conformations, present the performance comparison with previous molecular mechanics calculations if available, and determine whether our results are impacted, when polarization and diffuse functions are added to the 6-31G(d) basis set, or when the MP2 level of theory is used.

Published
2012

4. Microanalysis results with low Z gas inside environmental SEM

Author

L. Khouchaf, A. Kadoun, C. Mathieu, École des Mines de Douai (Mines Douai EMD), and Institut Mines-Télécom [Paris] (IMT)

Subjects
010302 applied physics, [PHYS]Physics [physics], Analytical chemistry, chemistry.chemical_element, 02 engineering and technology, Radius, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Microanalysis, Surfaces, Coatings and Films, chemistry, Ionization, 0103 physical sciences, Physics::Atomic and Molecular Clusters, Cathode ray, Physics::Atomic Physics, Atomic number, Atomic physics, 0210 nano-technology, Instrumentation, Environmental scanning electron microscope, Helium, Beam (structure), ComputingMilieux_MISCELLANEOUS
Abstract

The beam skirt phenomenon of the primary electron beam induces some uncertainties in the microanalysis results when a gas with high atomic number is used. The radius of the skirt r s and the unscattered fraction were used to explain the relationship between theoretical and experimental results. The use of a gas with a low atomic number such as Helium, leads to accurate results. A new explanation related to the gas ionization is given about the reduction of the beam skirt effect. In this case, the equation given r s is not suitable to explain with accuracy the behavior of the gas with a low atomic number.

Published
2011

5. Monte Carlo simulation of the electron beam scattering under gas mixtures in an HPSEM at low energy

Author

Mansour, O., AIDAOUI, K., KADOUN, A.-E., Khouchaf, L., Mathieu, C., Département de pharmacochimie moléculaire (DPM), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Université Djilali Liabès [Sidi-Bel-Abbès], École des Mines de Douai (Mines Douai EMD), Institut Mines-Télécom [Paris] (IMT), Institut Pluridisciplinaire Hubert Curien (IPHC), and Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS]Physics [physics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2010

6. Electron microbeam changes under gaseous environment : CP-SEM case and microanalysis limits

Author

Khouchaf, L., Mathieu, C., KADOUN, A.-E., École des Mines de Douai (Mines Douai EMD), Institut Mines-Télécom [Paris] (IMT), Institut Pluridisciplinaire Hubert Curien (IPHC), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDE]Environmental Sciences, ComputingMilieux_MISCELLANEOUS
Abstract

International audience; abstract simple

Published
2010

7. Monte Carlo simulation of the electron beam scattering under gas mixtures in an HPSEM at low energy

Author

Mansour, O., AIDAOUI, K., KADOUN, A.-E., Khouchaf, L., Mathieu, C., Département de pharmacochimie moléculaire (DPM), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Université Djilali Liabès [Sidi-Bel-Abbès], École des Mines de Douai (Mines Douai EMD), Institut Mines-Télécom [Paris] (IMT), Institut Pluridisciplinaire Hubert Curien (IPHC), and Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS]Physics [physics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2010

8. Monte Carlo simulation of the electron beam scattering under gas mixtures environment in an HPSEM at low energy

Author

Mansour, O., AIDAOUI, K., KADOUN, A.-E., Khouchaf, L., Mathieu, C., Département de pharmacochimie moléculaire (DPM), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Université Djilali Liabès [Sidi-Bel-Abbès], École des Mines de Douai (Mines Douai EMD), Institut Mines-Télécom [Paris] (IMT), Institut Pluridisciplinaire Hubert Curien (IPHC), and Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[CHIM]Chemical Sciences, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2009

9. Monte Carlo simulation of the electron beam scattering under gas mixtures environment in an HPSEM at low energy

Author

Mansour, O., AIDAOUI, K., KADOUN, A.-E., Khouchaf, L., Mathieu, C., Département de pharmacochimie moléculaire (DPM), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Université Djilali Liabès [Sidi-Bel-Abbès], École des Mines de Douai (Mines Douai EMD), Institut Mines-Télécom [Paris] (IMT), Institut Pluridisciplinaire Hubert Curien (IPHC), and Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[CHIM]Chemical Sciences, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2009

10. A new encapsulation method of InP during post implantation annealing

Author

D. Barbier, Michel Gendry, V. Drouot, A. Kadoun, I. Thomas, Georges Bremond, Jacques Tardy, A. Laugier, Laboratoire d'électronique, automatique et mesures électriques (LEAME), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon, Laboratoire de physique de la matière (LPM), Institut National des Sciences Appliquées de Lyon (INSA Lyon), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Annealing (metallurgy), Inorganic chemistry, General Physics and Astronomy, 02 engineering and technology, 01 natural sciences, Depletion region, 0103 physical sciences, Thin film, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, ComputingMilieux_MISCELLANEOUS, 010302 applied physics, business.industry, Schottky diode, Surfaces and Interfaces, General Chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Surfaces, Coatings and Films, Secondary ion mass spectrometry, Ion implantation, Optoelectronics, 0210 nano-technology, business, MISFET, Molecular beam epitaxy
Abstract

This paper describes a new encapsulation method of the surface of InP during post implantation annealing with a 1 μm thick InGaAs layer grown by molecular beam epitaxy. Secondary ion mass spectrometry microanalysis shows that the InGaAs/InP interface remains very stable upon rapid thermal annealing. However, capacitance-voltage measurements on MIS Schottky diodes reveal a wide depletion region in the underlying InP due to donor compensation. The proposed process has been successfully integrated in our technology of InP MISFET.

Published
1993

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