Multi-parton interactions and rapidity gap survival probability in jet-gap-jet processes

We discuss an application of dynamical multi-parton interaction model, tuned to measurements of underlying event topology, for a description of destroying rapidity gaps in the jet-gap-jet processes at the LHC. We concentrate on the dynamical origin of the mechanism of destroying the rapidity gap. The cross section for jet-gap-jet is calculated within LL BFKL approximation. We discuss the topology of final states without and with the MPI effects. We discuss some examples of selected kinematical situations (fixed jet rapidities and transverse momenta) as distributions averaged over the dynamics of the jet-gap-jet scattering. The color-singlet ladder exchange amplitude for the partonic subprocess is implemented into the \textsc{Pythia 8} generator, which is then used for hadronisation and for the simulation of the MPI effects. Several differential distributions are shown and discussed. We present the ratio of cross section calculated with and without MPI effects as a function of rapidity gap in between the jets.Comment: 18 pages, 10 figure

Exclusive diffractive Higgs and jet production at the LHC

The implementation of exclusive diffractive production of Higgs boson and dijets in the FPMC (Forward Physics Monte Carlo) framework is presented following the models by Khoze, Martin, Ryskin and Cudell, Dechambre, Hernandez and Ivanov. The predictions of the models are compared to the CDF measurement of exclusive jets and the uncertainties on the Higgs boson and jet production cross sections at the LHC are discussed.Comment: Proceedings of the DIS 2010 workshop, Florence, Ital

Bag-of-Features Image Indexing and Classification in Microsoft SQL Server Relational Database

This paper presents a novel relational database architecture aimed to visual objects classification and retrieval. The framework is based on the bag-of-features image representation model combined with the Support Vector Machine classification and is integrated in a Microsoft SQL Server database.Comment: 2015 IEEE 2nd International Conference on Cybernetics (CYBCONF), Gdynia, Poland, 24-26 June 201

Study of Diffraction with the ATLAS detector at the LHC

La thèse est consacrée à l étude de la diffraction en utilisant le détecteur ATLAS auprès du LHC. Après Une courte introduction à la physique diffractive incluant la diffraction dure et molle , nous présentons la production diffractive exclusive qui est particulièrement intéressante pour produire des jets et le boson de Higgs. Le mécanisme décrit par le formalisme de Khoze Martin et Ryskin et celui de CHIDe sont décrits en détail. Les sources d incertitude dans la description théorique sont encore importantes et une nouvelle mesure de la section efficace de production exclusive de jets au LHC permettra de réduire l incertitude de la production diffractive de boson de Higgs à un facteur 2 à trois. La mesure de la production exclusive de pions pp ! p_+_ p permet de contraindre les modèles de manière plus précise en utilisant les détecteurs ALFA, qui sont utilisés dans l expérience ATLAS pour la détection de protons diffusés dans les interactions élastiques et diffractives. Les détecteurs AFP décrits dans la dernière partie de la thèse, mesurant les protons dispersés après interaction diffractive sont présentés. Ils permettent d étendre le programme de physique d ATLAS, avec en particulier, la production centrale diffractive de boson W, ce qui rend possible une meilleure compréhension de la nature des échanges diffractifs.The thesis is devoted to the study of diffractive physics with the ATLAS detector at the LHC. After a short introduction to diffractive physics including soft and hard diffraction, we discuss diffractive exclusive production at the LHC whichis particularly interesting for Higgs and jet production. The QCD mechanism described by the Khoze Martin Ryskin and the CHIDe models are elucidated in detail. The uncertainties on these models are still large and a new possible exclusive jetmeasurement at the LHC will allow to reduce the uncertainty on diffarctive Higgs boson production to a factor 2 to 3. An additional measurement of exclusive pion production pp ! p_+_ p allows to constrain further exclusive model relying on theuse of the ALFA stations, which are used in the ATLAS Experiment for detection of protons scattered in elastic and diffractive interactions. In the last part of the thesis, the AFP detectors, aiming at measuring the protons scattered in diffractive interactions, are presented. They allow to extend substantially the ATLAS physics programme. In particular, the study of the central diffractive W boson production process makes possible a better determination of the nature of diffractive exchanges.PARIS11-SCD-Bib. électronique (914719901) / SudocSudocFranceF

Lipid nanocarriers for hyperproliferative skin diseases

Hyperproliferative skin diseases (HSD) are a group of diseases that include cancers, pre-cancerous lesions and diseases of unknown etiology that present different skin manifestations in terms of the degree and distribution of the injuries. Anti-proliferative agents used to treat these diseases are so diverse, including 5-aminolevulinic acid, 5-fluorouracil, imiquimod, methotrexate, paclitaxel, podophyllotoxin, realgar, and corticosteroids in general. These drugs usually have low aqueous solubility, which consequently decreases skin permeation. Thus, their incorporation in lipid nanocarriers has been proposed with the main objective to increase the effectiveness of topical treatment and reduce side effects. This manuscript aims to describe the advantages of using lipid nanoparticles and liposomes that can be used to load diversity of chemically different drugs for the treatment of HSD.This research was funded by the Portuguese Science and Technology Foundation (FCT/MCT), European Funds (PRODER/COMPETE)—project UIDB/04469/2020 (strategic fund), co-financed by FEDER, under the Partnership Agreement PT2020. The work is also supported by the National Science Centre within the MINIATURA 4 for a single research activity (grant no: 2020/04/X/ST5/00789) and by the START 2021 Program of the Foundation for Polish Science (FNP) granted to Aleksandra Zielínskainfo:eu-repo/semantics/publishedVersio

Lipid Nanocarriers for Hyperproliferative Skin Diseases

Hyperproliferative skin diseases (HSD) are a group of diseases that include cancers, pre-cancerous lesions and diseases of unknown etiology that present different skin manifestations in terms of the degree and distribution of the injuries. Anti-proliferative agents used to treat these diseases are so diverse, including 5-aminolevulinic acid, 5-fluorouracil, imiquimod, methotrexate, paclitaxel, podophyllotoxin, realgar, and corticosteroids in general. These drugs usually have low aqueous solubility, which consequently decreases skin permeation. Thus, their incorporation in lipid nanocarriers has been proposed with the main objective to increase the effectiveness of topical treatment and reduce side effects. This manuscript aims to describe the advantages of using lipid nanoparticles and liposomes that can be used to load diversity of chemically different drugs for the treatment of HSD. Keywords: lipid nanoparticles; liposomes; hyperproliferative skin diseases; antiproliferative drugs; skin cance