{"id":33,"date":"2022-06-06T13:03:30","date_gmt":"2022-06-06T10:03:30","guid":{"rendered":"http:\/\/labo.univ-batna.dz\/lrprim\/?page_id=33"},"modified":"2024-10-28T12:07:38","modified_gmt":"2024-10-28T09:07:38","slug":"%d9%86%d8%b4%d8%a7%d8%b7-%d8%a7%d9%84%d9%85%d8%ae%d8%a8%d8%b1","status":"publish","type":"page","link":"https:\/\/labo.univ-batna.dz\/lrprim\/?page_id=33","title":{"rendered":"Activity of the laboratory"},"content":{"rendered":"<style>\/*! elementor - v3.21.0 - 26-05-2024 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style>\n<h2>Activity of the laboratory<\/h2>\n<style>#sp-ea-321 .spcollapsing { height: 0; overflow: hidden; transition-property: height;transition-duration: 300ms;}#sp-ea-321.sp-easy-accordion>.sp-ea-single {margin-bottom: 10px; border: 1px solid #e2e2e2; }#sp-ea-321.sp-easy-accordion>.sp-ea-single>.ea-header a {color: #444;}#sp-ea-321.sp-easy-accordion>.sp-ea-single>.sp-collapse>.ea-body {background: #fff; color: #444;}#sp-ea-321.sp-easy-accordion>.sp-ea-single {background: #eee;}#sp-ea-321.sp-easy-accordion>.sp-ea-single>.ea-header a .ea-expand-icon { float: left; color: #444;font-size: 16px;}<\/style><div id=\"sp_easy_accordion-1717663948\"><div id=\"sp-ea-321\" class=\"sp-ea-one sp-easy-accordion\" data-ea-active=\"ea-click\" data-ea-mode=\"vertical\" data-preloader=\"\" data-scroll-active-item=\"\" data-offset-to-scroll=\"0\"><div class=\"ea-card ea-expand sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-3210\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse3210\" aria-controls=\"collapse3210\" href=\"#\" aria-expanded=\"true\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-minus\"><\/i> Third Workshop on Matter and Radiation WMR25<\/a><\/h3><div class=\"sp-collapse spcollapse collapsed show\" id=\"collapse3210\" data-parent=\"#sp-ea-321\" role=\"region\" aria-labelledby=\"ea-header-3210\"> <div class=\"ea-body\"><p>Soon<\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-3211\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse3211\" aria-controls=\"collapse3211\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> The Second Workshop on Matter and Radiation WMR23<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse3211\" data-parent=\"#sp-ea-321\" role=\"region\" aria-labelledby=\"ea-header-3211\"> <div class=\"ea-body\"><p>The Faculty of Matter Sciences, in collaboration with the Department of Physics and the PRIMALAB research laboratory, organized the Second workshop on Matter and Radiation on May 17-18, 2023 at the Faculty of Matter Sciences<\/p><p>website:<a href=\"https:\/\/seminaires.univ-batna.dz\/wmr23\/\"> http:\/\/seminaires.univ-batna.dz\/wmr23<\/a><\/p><p><span lang=\"FR\">\u00a0<\/span><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-322 aligncenter\" src=\"http:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/poster-212x300.jpg\" alt=\"\" width=\"399\" height=\"565\" srcset=\"https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/poster-212x300.jpg 212w, https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/poster.jpg 636w\" sizes=\"(max-width: 399px) 100vw, 399px\" \/><\/p><p>the flyer : <a href=\"https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/10\/flyer.pdf\">download\u00a0<\/a><\/p><p>book of abstracts :<a href=\"https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/10\/flyer.pdf\">\u00a0 download<\/a><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-3212\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse3212\" aria-controls=\"collapse3212\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> First edition of the Physics Olympiad.<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse3212\" data-parent=\"#sp-ea-321\" role=\"region\" aria-labelledby=\"ea-header-3212\"> <div class=\"ea-body\"><p><span lang=\"FR\">The Faculty of Materials Science, in collaboration with the Department of Physics and the PRIMALAB, LPEA, and LEPCM research laboratories, organized the first edition of the Physics Olympiad for Master's students on May 24, 2022, in Amphi 150. We encourage everyone to attend! <\/span><img decoding=\"async\" class=\" wp-image-323 aligncenter\" src=\"http:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/affiche-300x223.jpg\" alt=\"\" width=\"404\" height=\"300\" srcset=\"https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/affiche-300x223.jpg 300w, https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/affiche.jpg 669w\" sizes=\"(max-width: 404px) 100vw, 404px\" \/><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-3213\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse3213\" aria-controls=\"collapse3213\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Visit of Professor Roland Stamm.<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse3213\" data-parent=\"#sp-ea-321\" role=\"region\" aria-labelledby=\"ea-header-3213\"> <div class=\"ea-body\"><p>The Radiation Physics and Its Interactions with Matter Laboratory (PRIMALAB) organized a visit presented by Professor Roland Stamm, a member of the Laboratory of Ionic and Molecular Interactions (PIIM) at Aix-Marseille University \/ CNRS.<\/p><p>The event took place on Thursday, April 27, 2017, at 11:15 AM in the conference room of the Faculty of Materials Science.<\/p><div><p><img decoding=\"async\" class=\" wp-image-324 aligncenter\" src=\"http:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/stamm-300x211.png\" alt=\"\" width=\"535\" height=\"376\" srcset=\"https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/stamm-300x211.png 300w, https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/stamm-768x541.png 768w, https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/stamm.png 830w\" sizes=\"(max-width: 535px) 100vw, 535px\" \/><\/p><\/div><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-3214\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse3214\" aria-controls=\"collapse3214\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Conference by Professor Noureddine Mellikechi.<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse3214\" data-parent=\"#sp-ea-321\" role=\"region\" aria-labelledby=\"ea-header-3214\"> <div class=\"ea-body\"><p>The Radiation Physics and Its Interactions with Matter Laboratory (PRIMALAB) organized a visit presented by Professor Noureddine Mellikechi, a professor at Kennedy College of Sciences, UMass Lowell, USA, and a specialist in atomic, molecular, and optical physics.<\/p><p>The event took place on Thursday, April 23, 2017, at 11:15 AM in the conference room of the Faculty of Materials Science.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-325 aligncenter\" src=\"http:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/melikechi-800_tcm18-263799-218x300.jpg\" alt=\"\" width=\"352\" height=\"484\" srcset=\"https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/melikechi-800_tcm18-263799-218x300.jpg 218w, https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/melikechi-800_tcm18-263799-745x1024.jpg 745w, https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/melikechi-800_tcm18-263799-768x1056.jpg 768w, https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/melikechi-800_tcm18-263799.jpg 800w\" sizes=\"(max-width: 352px) 100vw, 352px\" \/><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-3215\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse3215\" aria-controls=\"collapse3215\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Visit of Professor Ilies Messamah.<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse3215\" data-parent=\"#sp-ea-321\" role=\"region\" aria-labelledby=\"ea-header-3215\"> <div class=\"ea-body\"><p>The Radiation Physics and Its Interactions with Matter Laboratory (PRIMALAB) organized a visit presented by Ilies Messamah, PhD in theoretical physics from the School of Physics at the University of Witwatersrand, Johannesburg, South Africa.<\/p><p>The event took place on Thursday, February 23, 2017, at 11:15 AM in the library of the Faculty of Materials Science.<\/p><p><strong>Abstract:<\/strong><\/p><p>Shortly after Einstein wrote his equations of gravity, Schwarzschild found the first exact solution (1916). This led to the decoding of this object by scientists: \"the black hole.\" However, they were unaware that black holes present even more challenging problems.<\/p><p>In this talk, I will start with a review of \"The black hole paradoxes\" (mid-1970s). Following that, I will attempt to provide an overview of the methods proposed by string theory to address some of these paradoxes. In the process, I will briefly mention some implications of these methods, as well as other areas of physics related to the fundamental understanding of spacetime and gravity.<\/p><p>&nbsp;<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-326 aligncenter\" src=\"http:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/messameh-211x300.png\" alt=\"\" width=\"322\" height=\"458\" srcset=\"https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/messameh-211x300.png 211w, https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/messameh.png 456w\" sizes=\"(max-width: 322px) 100vw, 322px\" \/><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-3216\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse3216\" aria-controls=\"collapse3216\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Conference by Professor ML Benabderrahmane from NYU Abu Dhabi.<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse3216\" data-parent=\"#sp-ea-321\" role=\"region\" aria-labelledby=\"ea-header-3216\"> <div class=\"ea-body\"><p>The Radiation Physics and Its Interactions with Matter Laboratory (PRIMALAB) organized a photographic visit titled:<\/p><p><strong>\u201cHigh-Energy Neutrino Astronomy with IceCube\u201d<\/strong><\/p><p>presented by ML Benabderrahmane from NYU Abu Dhabi.<\/p><p>The event took place on Tuesday, May 17, 2016, from 1 PM to 2 PM in the conference room of the Faculty of Materials Science.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-327 aligncenter\" src=\"http:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/visio-conference-300x223.png\" alt=\"\" width=\"491\" height=\"365\" srcset=\"https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/visio-conference-300x223.png 300w, https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/visio-conference-768x571.png 768w, https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/visio-conference.png 824w\" sizes=\"(max-width: 491px) 100vw, 491px\" \/><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-3217\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse3217\" aria-controls=\"collapse3217\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> The 1st Workshop on Matter and Radiation - WMR16-.<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse3217\" data-parent=\"#sp-ea-321\" role=\"region\" aria-labelledby=\"ea-header-3217\"> <div class=\"ea-body\"><p>The Radiation Physics and Its Interactions with Matter Laboratory (PRIMALAB), in collaboration with the Faculty of Materials Science, organized:<\/p><p><strong>THE 1st WORKSHOP ON MATTER AND RADIATION - WMR16<\/strong>.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-328 aligncenter\" src=\"http:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/entete-workshop-300x117.jpg\" alt=\"\" width=\"551\" height=\"215\" srcset=\"https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/entete-workshop-300x117.jpg 300w, https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/entete-workshop-1024x400.jpg 1024w, https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/entete-workshop-768x300.jpg 768w, https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/entete-workshop-1536x600.jpg 1536w, https:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/entete-workshop.jpg 1920w\" sizes=\"(max-width: 551px) 100vw, 551px\" \/><\/p><p><strong>Livre des CV: <\/strong><a href=\"\/My%20Web%20Sites\/sitelabo\/labo.univ-batna.dz\/lrprim\/images\/bookofabstracts.docx\">livre des CV<\/a><\/p><p><strong>discussions:<\/strong><\/p><table border=\"3\"><tbody><tr><td><strong>Nom\u00a0<\/strong><\/td><td><strong>Pr\u00e9sentation<\/strong><\/td><\/tr><tr><td>Pr. Shmatov Mikhail<\/td><td><a href=\"\/My%20Web%20Sites\/sitelabo\/labo.univ-batna.dz\/lrprim\/images\/shmatovbl.ppt\"><strong>STRUCTURE, FORMATION ET\u00a0 <\/strong><strong>DANGER D'\u00c9CLAIR DE BALLE<\/strong><\/a><\/td><\/tr><tr><td>Pr. Shmatov Mikhail<\/td><td>\u00a0<a href=\"\/My%20Web%20Sites\/sitelabo\/labo.univ-batna.dz\/lrprim\/images\/shmatovfusion.ppt\"><strong>SUR LES SCIENCES ET TECHNOLOGIES DE LA FUSION\u00a0<\/strong><\/a><\/td><\/tr><tr><td>Ens-cher I.Hannachi<\/td><td><strong><a href=\"\/My%20Web%20Sites\/sitelabo\/labo.univ-batna.dz\/lrprim\/images\/hannachi.pptx\">DIAGNOSTIC SPECTROSCOPIQUE DE PLASMAS D'EQUILIBRE ET DE TURBULENT<\/a><\/strong><\/td><\/tr><tr><td>Ens-cher A.Benahmed<\/td><td><\/td><\/tr><tr><td>Pr. H.Triki<\/td><td><\/td><\/tr><tr><td>Pr. S. Chekour<\/td><td><\/td><\/tr><\/tbody><\/table><p><strong>Galery of photos:<\/strong><\/p><p>&nbsp;<\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-3218\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse3218\" aria-controls=\"collapse3218\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Research at the CERN LHC Experiment.<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse3218\" data-parent=\"#sp-ea-321\" role=\"region\" aria-labelledby=\"ea-header-3218\"> <div class=\"ea-body\"><p>The Radiation Physics and Its Interactions with Matter Laboratory (PRIMALAB) organized a photographic visit titled:<\/p><p><strong>\u201cRESEARCH AT THE CERN LHC EXPERIMENT\u201d<\/strong><\/p><p>presented by Asma Hadef.<\/p><p>The event took place on Sunday, June 7, 2015, at 2 AM in the PRIMALAB laboratory.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-329 aligncenter\" src=\"http:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/cern.bmp\" alt=\"\" width=\"652\" height=\"371\" \/><\/p><p>&nbsp;<\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-3219\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse3219\" aria-controls=\"collapse3219\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Jets around Young Stellar Objects (YSOs).<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse3219\" data-parent=\"#sp-ea-321\" role=\"region\" aria-labelledby=\"ea-header-3219\"> <div class=\"ea-body\"><p>The Radiation Physics and Its Interactions with Matter Laboratory (PRIMALAB) organized a seminar titled:<\/p><p><strong>\u201cJets around Young Stellar Objects (YSOs)\u201d<\/strong><\/p><p>presented by Ahmane Zoubida.<\/p><p>&nbsp;<\/p><div class=\"flex max-w-full flex-col flex-grow\"><div class=\"min-h-8 text-message flex w-full flex-col items-end gap-2 whitespace-normal break-words [.text-message+&amp;]:mt-5\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"804e6c04-50b1-4138-a011-2ceae22b5c04\" data-message-model-slug=\"gpt-4o-mini\"><div class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[3px]\"><div class=\"markdown prose w-full break-words dark:prose-invert dark\"><p>On Wednesday, May 6, 2015, at 2 AM in the Conference room.<\/p><\/div><\/div><\/div><\/div><div class=\"mb-2 flex gap-3 empty:hidden -ml-2\"><div class=\"items-center justify-start rounded-xl p-1 flex\"><div class=\"flex items-center\"><button class=\"rounded-lg text-token-text-secondary hover:bg-token-main-surface-secondary\" aria-label=\"Copy\" data-testid=\"copy-turn-action-button\"><\/button><\/p><div class=\"flex items-center pb-0\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-32110\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse32110\" aria-controls=\"collapse32110\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Cosmic Rays (Ultra High Energy).<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse32110\" data-parent=\"#sp-ea-321\" role=\"region\" aria-labelledby=\"ea-header-32110\"> <div class=\"ea-body\"><p>The Radiation Physics and Its Interactions with Matter Laboratory (PRIMALAB) organized a seminar titled:<\/p><p><strong>\u201cCosmic Rays (Ultra High Energy)\u201d<\/strong><\/p><p>presented by Soumia Lebbal.<\/p><p>The event took place on Wednesday, April 15, 2015, at 2 AM in the defense room.<\/p><p><strong>Abstract:<\/strong><\/p><p>Cosmic rays (also studied in Astroparticles) are particles from the universe that strike the Earth from all directions. Since their discovery a century ago, they have sparked the curiosity of physicists. In fact, many questions regarding their origin, their propagation in the galactic\/intergalactic medium, and their production mechanisms remain unanswered.<\/p><p>The Extreme Universe Space Observatory (JEM-EUSO) is an ongoing mission aimed at addressing some of these long-standing issues.<\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-32111\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse32111\" aria-controls=\"collapse32111\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Time-dependent systems.<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse32111\" data-parent=\"#sp-ea-321\" role=\"region\" aria-labelledby=\"ea-header-32111\"> <div class=\"ea-body\"><div class=\"flex-1 overflow-hidden\"><div class=\"h-full\"><div class=\"react-scroll-to-bottom--css-uhkpu-79elbk h-full\"><div class=\"react-scroll-to-bottom--css-uhkpu-1n7m0yu\"><div class=\"flex flex-col text-sm md:pb-9\"><article class=\"w-full text-token-text-primary focus-visible:outline-2 focus-visible:outline-offset-[-4px]\" dir=\"auto\" data-testid=\"conversation-turn-39\" data-scroll-anchor=\"true\"><div class=\"m-auto text-base py-[18px] px-3 md:px-4 w-full md:px-5 lg:px-4 xl:px-5\"><div class=\"mx-auto flex flex-1 gap-4 text-base md:gap-5 lg:gap-6 md:max-w-3xl\"><div class=\"group\/conversation-turn relative flex w-full min-w-0 flex-col agent-turn\"><div class=\"flex-col gap-1 md:gap-3\"><div class=\"flex max-w-full flex-col flex-grow\"><div class=\"min-h-8 text-message flex w-full flex-col items-end gap-2 whitespace-normal break-words [.text-message+&amp;]:mt-5\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"36c04a5a-5844-4095-b996-99dfcd0601a9\" data-message-model-slug=\"gpt-4o-mini\"><div class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[3px]\"><div class=\"markdown prose w-full break-words dark:prose-invert dark\"><p>Laboratory of physic of Radiations and Its Interactions with Matter (PRIMALAB) organized a seminar titled:<\/p><p><strong>\u201cTime-Dependent Systems: From Discrete to Continuous and From Hermitian to Non-Hermitian\u201d<\/strong><\/p><p>presented by Dr. Yahia Saadi from the Laboratory of Quantum Physics and Dynamic Systems at Ferhat Abbas University - S\u00e9tif 1.<\/p><p>The event took place on Wednesday, April 29, 2015, at 2 PM in the conference room.<\/p><p><strong>Abstract:<\/strong><\/p><p>The study of stationary systems is of great importance. Such idealization does not accurately describe physical reality, particularly in research problems. At this level, we must consider variations in different types of physical problems: this is what we call time-dependent systems.<\/p><p>In this talk, we will present our active research area to our students, particularly the generalization of the well-known notion of geometric phases, limited to discrete spectra, to continuous spectra for approximation and invariant theory. We will also discuss other perspectives on unresolved issues, including the generalization of time-dependent systems to non-Hermitian systems.<\/p><p><strong>Keywords:<\/strong> invariant theory, Lewis and Riesenfeld theory, Liouville-Von Neumann equation, adiabatic approximation, adiabatic theorem, energy interval, discrete spectrum, continuous spectrum, distinct differentials, Berry phase, geometric phase, S-matrix, PT-symmetric systems.<\/p><\/div><\/div><\/div><\/div><div class=\"mb-2 flex gap-3 empty:hidden -ml-2\"><div class=\"items-center justify-start rounded-xl p-1 flex\"><div class=\"flex items-center\"><button class=\"rounded-lg text-token-text-secondary hover:bg-token-main-surface-secondary\" aria-label=\"Copy\" data-testid=\"copy-turn-action-button\"><\/button><span style=\"font-size: 16px\">4o mini<\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/article><\/div><\/div><\/div><\/div><\/div><div class=\"md:pt-0 dark:border-white\/20 md:border-transparent md:dark:border-transparent w-full\"><div class=\"m-auto text-base px-3 md:px-4 w-full md:px-5 lg:px-4 xl:px-5\"><div class=\"mx-auto flex flex-1 gap-4 text-base md:gap-5 lg:gap-6 md:max-w-3xl\"><div class=\"relative flex h-full max-w-full flex-1 flex-col\"><div class=\"group relative flex w-full items-center\"><div class=\"flex w-full flex-col transition-colors contain-inline-size gap-1.5 rounded-[26px] p-1.5 bg-[#f4f4f4] dark:bg-token-main-surface-secondary\"><div class=\"flex items-end gap-1.5 pl-4 md:gap-2\"><div class=\"flex min-w-0 flex-1 flex-col\"><div class=\"_prosemirror-parent_15ceg_1 text-token-text-primary max-h-[25dvh] max-h-52 overflow-auto default-browser\"><div id=\"prompt-textarea\" class=\"ProseMirror\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"relative w-full px-2 py-2 text-center text-xs text-token-text-secondary empty:hidden md:px-[60px]\"><div class=\"min-h-4\"><div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-32112\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse32112\" aria-controls=\"collapse32112\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Workshop on Laser and Plasma Physics.<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse32112\" data-parent=\"#sp-ea-321\" role=\"region\" aria-labelledby=\"ea-header-32112\"> <div class=\"ea-body\"><p>As part of its scientific activities, the Radiation Physics and Its Interactions with Matter Laboratory (PRIMALAB) organized a workshop on Laser and Plasma Physics on December 11, 2012, at 9:30 AM in conference room.<\/p><p>Two foreign researchers were invited:<\/p><ul><li><strong>Milan Kalal<\/strong>: Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague.<\/li><li><strong>Rajabbay Khaydarov<\/strong>: Institute of Applied Physics, National University of Uzbekistan, Tashkent.<\/li><\/ul><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-32113\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse32113\" aria-controls=\"collapse32113\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Third Auresian Workshop on Astronomy and Astrophysics.<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse32113\" data-parent=\"#sp-ea-321\" role=\"region\" aria-labelledby=\"ea-header-32113\"> <div class=\"ea-body\"><div class=\"flex max-w-full flex-col flex-grow\"><div class=\"min-h-8 text-message flex w-full flex-col items-end gap-2 whitespace-normal break-words [.text-message+&amp;]:mt-5\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"a75338ff-8ae1-4118-86fd-e1e8b838d597\" data-message-model-slug=\"gpt-4o-mini\"><div class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[3px]\"><div class=\"markdown prose w-full break-words dark:prose-invert dark\"><p>Third auresian Workshop on Astronomy and Astrophysics.<\/p><\/div><\/div><\/div><\/div><div class=\"mb-2 flex gap-3 empty:hidden -ml-2\"><div class=\"items-center justify-start rounded-xl p-1 flex\"><div class=\"flex items-center\"><button class=\"rounded-lg text-token-text-secondary hover:bg-token-main-surface-secondary\" aria-label=\"Copy\" data-testid=\"copy-turn-action-button\"><\/button><\/p><div class=\"flex items-center pb-0\"><\/div><\/div><\/div><\/div><p><a href=\"http:\/\/siriusalgeria.net\/astro\/Aures08\/auresian\/program.htm\">Atelier Auresian sur l\u2019astronomie et l\u2019astrophysique<\/a> , University of Batna 1:\u00a0 April 29-30, 2008.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-330 aligncenter\" src=\"http:\/\/labo.univ-batna.dz\/lrprim\/wp-content\/uploads\/2024\/06\/astrocirta2b.jpg\" alt=\"\" width=\"200\" height=\"280\" \/><\/p><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Activity of the laboratory<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"full-width-container","site-content-style":"unboxed","site-sidebar-style":"unboxed","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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