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Semigrup teorisi ve bazı uygulamaları
No full textThesis (Master)--Izmir Institute of Technology, Mathematics, Izmir, 2020Includes bibliographical references (leaves: 53-54)Text in English; Abstract: Turkish and Englishn the present thesis, we consider the evolution equation (Cauchy problem) which is the basis for our study. We show how various linear partial differential equations can be transformed into the Cauchy problem form. Solving the Cauchy problem is equivalent to find a family of evolution operators T(t) which sends the initial state of the system to the solution state at a later time t. It turns out that this family of operators T(t) must satisfy some properties which we call semigroup properties. We state the Hille-Yosida and Lumer-Phillips theorems to characterize contraction semigroups. Moreover, we apply these theorems to the heat and wave equations as examples. We also consider strongly continuous operator groups and Stone's theorem. Finally, we give some essential conditions to obtain wellposed evaluation equation and introduce an inhomogeneous Cauchy problem.Bu tezde, çalışmamızın temelini oluşturan ilerleme denklemi (Cauchy problemi) ele alındı. Çeşitli lineer kısmi diferansiyel denklemlerin Cauchy problem formuna nasıl dönüştürülebildiğini gösterdik. Cauchy problemini çözmek, sistemin başlangıç konumunu t zaman sonraki çözüm konumuna götüren T(t) ilerleme operatör ailesi bulmaya eşdeğerdir. Bu T(t) operatörleri ailesinin semigrup özellikleri olarak adlandırdığımız bazı özellikleri karşılaması gerektiği ortaya çıktı. Daralan semigrupları karakterize etmek için Hille-Yosida ve Lumer-Phillips teoremlerini açıkladık. Dahası bu teoremleri örnek olarak ısı ve dalga denklemlerine uyguladık. Ayrıca güçlü sürekli operatör gruplarını ve Stone teoremini de inceledik. Son olarak, iyi tanımlanmış ilerleme denklemini elde etmek ve homojen olmayan Cauchy problemini tanıtmak için bazı temel koşullar sunduk
Kitosan bazlı biyoköpüklerin geliştirilmesi
No full textThesis (Doctoral)--Izmir Institute of Technology, Chemical Engineering, Izmir, 2020Includes bibliographical references (leaves: 170-177)Text in English; Abstract: Turkish and EnglishChitosan is a preferred bio-foam material used in many research fields such as tissue engineering and drug delivery due to its unique structural features (wide pH stability, nontoxic-biocompatible-biodegradable, anti-inflammatory, antimicrobial). However, chitosan foams are mechanically too weak to maintain the desired shape until newly formed tissue natures. A wound infection and serious tissue necrosis, endanger human's lives. So, a dressing is required to protect loss of fluids and proteins from the wound area and prevents any bacterial invasion replacing the function of skin temporarily. Therefore controlled drug release from a wound dressing is necessary with a biocompatibility and enough mechanical strength. The aim of this study was the synthesis of mechanically durable - dual porosity chitosan bio-foams to provide a controlled drug release. For this purpose, oil droplets formed in a chitosan solution were used as templates to produce micropores that also contain vancomycin (a model antibiotic-hydrophylic) and curcumin (a model anti-inflammatory-hydrophobic) in the walls of the chitosan matrix with large structural voids. An anionic surfactant, sodium dodecyl sulfate (SDS) alone, was used as a crosslinking agent which was a new approach. Then the structures were characterized by SEM, FTIR, mechanical tests and BET analysis. The chitosan foams have dual pore structures. 1) The intrinsic micro pores that the walls of chitosan matrix have with different morphology that depends on the oil phase. 2) The structural voids that the chitosan matrix have, present even in the absence of an oil phase that depends on the experimental conditions. The mechanical strength of the foams were found to be much higher (up to 250 kPa) compare to the foams produced in literature and suggested to be suitable to use for wound dressing applications. The drug release mechanism of foams were found to depend on the conditions used for foam development and the released kinetics were presented with a mathematical model.Kitosan, eşsiz yapısal özellikleri (geniş pH stabilitesine sahip olmak, toksik olmamak, biyouyumlu, biyobozunur, antiinflamatuar ve antimikrobiyal olmak) nedeniyle doku mühendisliği ve ilaç salım sistemleri gibi birçok alanda biyo-köpük üretmek için kullanılan bir malzemedir. Bununla birlikte, kitosan köpükler, dokunun yeniden oluşması ya da iyileşmesine kadar geçen sürede istenen şeklini koruması açısından mekanik olarak çok zayıftır. Yara enfeksiyonu ve ciddi doku ölümü, insanların hayatını tehlikeye sokar. Bu nedenle, yara bölgesinden sıvı ve protein kaybını önlemek ayrıca cildin işlevini geçici olarak değiştiren bakteri istilasını engellemek için bir yara örtüsü gereklidir. Bununla birlikte, biyouyumluluğa ve yeterli mekanik mukavemete sahip yara örtülerinden kontrollü ilaç salınımı, yaraların tedavisi için önemlidir. Bu çalışmanın amacı, kontrollü bir ilaç salımı sağlamak için mekanik olarak dayanıklı ve iki farklı tip gözenek yapısına sahip kitosan biyo-köpüklerin sentezidir. Bu amaçla, kitosan çözeltisinde oluşturulan yağ damlacıkları, büyük yapısal boşluklara sahip kitosan matrisinin duvarlarında vankomisin (model antibiyotik-hidrofilik) ve curcumin (model antiinflamatuar-hidrofobik) içeren mikro gözenekler üretmek için şablon olarak kullanılmıştır. Yeni bir fikir olarak, anyonik bir yüzey aktif madde olan sodyum dodesil sülfat (SDS) çapraz bağlama maddesi olarak kullanılmıştır. Yapılar SEM, FTIR, BET analizi ve mekanik test ile karakterize edilmiştir. Kitosan köpükler iki farklı tip gözenek içeren yapıya sahiptir. Bunlar, 1) Kitosan matrisinin duvarlarında bulunan ve yağ fazına bağlı olarak farklı morfolojiye sahip olan gerçek mikro gözeneklerdir. 2) Kitosan matrisinin yağ fazı olmasa bile deney koşullarına bağlı olarak sahip olduğu yapısal boşluklardır. Köpüklerin mekanik mukavemetinin, literatürde üretilen köpüklere kıyasla çok daha yüksek (250 kPa 'a kadar) olduğu ve yara sargısı uygulamalarında kullanılmaya uygun olduğu görülmüştür. Köpüklerin ilaç salım mekanizmasının, köpük üretimi için kullanılan koşullara bağlı olduğu bulunmuştur ve salım kinetikleri, matematiksel bir modelle sunulmuştur
Search for a light pseudoscalar Higgs boson in the boosted μμττ final state in proton-proton collisions at √s = 13 TeV
No full textA search for a light pseudoscalar Higgs boson (a) decaying from the 125 GeV (or a heavier) scalar Higgs boson (H) is performed using the 2016 LHC proton-proton collision data at root s = 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1), collected by the CMS experiment. The analysis considers gluon fusion and vector boson fusion production of the H, followed by the decay H -> aa -> mu mu tau tau, and considers pseudoscalar masses in the range 3.6 aa -> mu mu tau tau, down to 1.5 (2.0)x10(-4) for m(H) = 125 (300) GeV. Model-dependent limits on B(H -> aa) are set within the context of two Higgs doublets plus singlet models, with the most stringent results obtained for Type-III models. These results extend current LHC searches for heavier a bosons that decay to resolved lepton pairs and provide the first such bounds for an H boson with a mass above 125 GeV
Adjuvant potency of Astragaloside VII embedded cholesterol nanoparticles for H3N2 influenza vaccine
No full textBedir, Erdal/0000-0003-1262-063X; Coven, Fethiye/0000-0003-1928-7630PubMed: 33110368Adjuvants are substances that increase the immune response to a given antigen. In the development of novel vaccine adjuvants/systems, saponins are one of the most attractive molecules due to their altered immunomodulatory activities. In this study, we tried to develop PEG (polyethylene glycol)/cholesterol-based lipid nanoparticles (LNPs) to deliver the Astragaloside VII (AST-VII) and potentiate adjuvant properties of AST-VII for the influenza vaccine. In the formation of PEG/cholesterol/AST-VII-based LNPs (PEG300: Chol-AST-VII LNPs), 3 different primary solvents (acetone, ethanol, and chloroform) were evaluated, employing their effects on hydrodynamic particle size, distribution, surface chemistry, and colloidal stability. Prepared nanoparticles were simply admixtured with inactivated influenza antigen (H3N2) and applied to PMA (phorbol 12-myristate 13-acetate)-ionomycin treated human whole blood to evaluate their cytokine release profile. PEG300: Chol-AST-VII LNPs (80.2 +/- 7.7 nm) were obtained using chloroform as a desolvation agent. Co-treatment of PMA-ionomycin with AST-VII and PEG300: Chol-AST-VII LNPs significantly increased the levels of IL-2 and IFN-gamma, compared to PMA-ionomycin alone. In the presence of H3N2, AST-VII was able to augment IL-17A, while PEG300: Chol-AST-VII LNPs stimulated the production of IFN-gamma. Hemolysis was only observed in PEG300: Chol-AST-VII LNPs (250 mu g/mL) treatment. AST-VII and AST-VII-integrated LNPs could be used as efficacious adjuvants for an inactivated H3N2 vaccine in vitro, and cytokine response through Th1/Th17 route was reported
Miras su yönetimi sistemleri ile çağdaş doğa-temelli çözümlerin entegrasyonu: Bodrum (Türkiye) örneği
No full textThesis (Master)--Izmir Institute of Technology, City and Regional Planning, Izmir, 2020Includes bibliographical references (leaves: 160-170)Text in English; Abstract: Turkish and EnglishWater, as an indispensable source of life, is considered as a scarce resource due to excessive consumption, pollution, climate change, and poor management practices. As water scarcity is being felt more and more every day around the world, innovative and creative solutions have gained an emergency for cities. Instead of conventional solutions, city managements are searching for sensitive solutions to nature and local. Turkey is already facing the problems of water scarcity due to its semi-arid climate susceptive to climate change; however, the conventional approach dominates water management. Bodrum is chosen as the case study area because it has its own water collection methods used for centuries by local population and have been emerged as a cultural heritage. The aim of the thesis is to propose environmentally sensitive and effective solutions to the water scarcity of the peninsula by combining the local water heritage methods and contemporary nature-based water supply techniques. In the study, water management methods of different historical cities are examined. Later, the current water problems and different management techniques from around the world are discussed. Additionally, approaches of countries are discussed to understand concepts and implementations. In the case study, the water problems and management history of the Bodrum Peninsula are investigated. The current situation analyses and a survey are conducted. With the obtained data, a guide which presents integrated strategies to combine the local water heritage methods and innovative nature-based techniques have been developed for the Bodrum Peninsula.Hayatın vazgeçilemez bir kaynağı olarak su, aşırı tüketim, kirlilik, iklim değişikliği, ve kötü yönetim pratikleri gibi nedenlerden dolayı günümüzde kıt bir kaynak olarak değerlendirilmektedir. Dünya'da su kıtlığı her geçen gün daha fazla hissedilmeye başladıkça, kentlerde su yönetimine yeni ve yaratıcı çözüm arayışları ortaya çıkmıştır. Bilinçli kent yönetimleri, beton ve boru çözümlerin yerine, doğa ve yerel ile uyumlu ve hassat çözüm arayışlarını sürdürmekte ve farklı şekillerde uygulamaktadırlar. Yarı-kurak iklimi nedeni ile halihazırda su kıtlığı problemleri ile yüzleşen ve iklim değişikliğine hassas Türkiye'de, su yönetimine beton çözümlerin oluşturduğu geleneksel bir yaklaşım hakimdir. Bodrum, Anadolu'da, kendi kültüründe barındırmış olduğu ve geçmişte yüzyıllarca kullanılmış etkili su toplama yöntemleri olan önemli bir yerleşim örneği olup çalışma alanı olarak belirlenmiştir Tezin amacı yerel yöntemleri gün yüzüne çıkararak, tekrardan, doğa temelli tekniklerle birleştirip kentin su sıkıntısına kendi geçmişinden gelen doğası ve yereli ile uyumlu, çevresel olarak hassas ve etkili çözüm önerileri sunmaktır. Çalışmada, ilk olarak farklı tarihi kentlerin su yönetim methodları incelenmiştir. Daha sonra dünyada ve Türkiye'de su problemleri ve farklı yönetim şekilleri tartışılmıştır. Bunlara örnek olarak farklı ülkelerin uyguladığı yenilikçi ve hassas su yönetimi konseptleri ve uygulama biçimleri ile yeni bir bakış açısı olan mavi-yeşil altyapı sistemleri doğa-temelli çözüm önerilerinin bir aracı olarak ele alınmıştır. Daha sonra Bodrum Yarımadası su problemleri ve yönetimi araştırılmış, mevcut durum analizleri yapılmış ve yöre halkından 51 kişi ile bir anket gerçekleştirilmiştir. Analizler ve anket sonucu elde edilen verilerle Bodrum Yarımadası için yerel su mirasını, yenilikçi doğa-temelli çözümler ile entegre edici stratejiler sunan bir rehber hazırlanmıştır
User Selection for Millimeter Wave Non-Uniform Full Dimensional MIMO
No full textCumali, Irem/0000-0001-5394-277XThe millimeter wave (mmWave) based full-dimensional (FD) MIMO communication is one of the promising technology to fulfill the demand of high data rate for the sixth generation (6G) services including 6D hologram, haptic and multi-sensory communications. In order to satisfy the requirements of 6G applications, we investigate a non-uniform rectangular array (NURA) structure with FD-MIMO antenna systems for the multiuser mmWave communications. For the dense scenarios where the number of users to be served is high, we propose user selection algorithms for both digital and hybrid transceiver designs in FD-MIMO with NURA for the multiuser mmWave communications. For the digital transceivers, the users are selected based on their channel correlation considering FD-MIMO with NURA structures. For the hybrid transceivers, sequential user and beam selection is performed using the correlation between the beamspace channels in FD-MIMO with NURA case. The superiority of the NURA compared to uniform antenna structure is shown through the performance evaluations in the multiuser mmWave communications. Besides, the sum data rate results and complexity analysis denote the feasibility of the proposed algorithms compared to the joint user and beam selection schemes.European UnionEuropean Union (EU) [823903]This work was supported by the European Union Horizon 2020, RISE 2018 Scheme (H2020-MSCA-RISE-2018) through the Marie Sklodowska-Curie Grant 823903 (RECENT)
Combination of the W boson polarization measurements in top quark decays using ATLAS and CMS data at root s=8 TeV
No full textCalligaris, Luigi/0000-0002-9951-9448; Olesya, Kuchinskaya/0000-0002-3664-2465; Lezki, Samet/0000-0002-6909-774X; Tcherniaev, Evgueni/0000-0002-3685-0635; Barreiro, Fernando/0000-0002-3021-0258; Wolters, Helmut/0000-0002-9588-1773; Minafra, Nicola/0000-0003-4002-1888; Perez, Miguel Villaplana/0000-0002-0048-4602; Duarte, Javier/0000-0002-5076-7096; de Souza Sandro, Fonseca/0000-0001-7830-0837; Bailey, Adam J/0000-0002-3301-2986; Billoud, Thomas/0000-0002-6280-3306; Kroll, Jiri/0000-0001-6215-3326; Wu, Xin/0000-0001-7655-389X; Bartosik, Nazar/0000-0002-7196-2237; Azarkin, Maxim/0000-0002-7448-1447; Alimonti, Gianluca/0000-0002-7128-9046; Gonzalez, Barbara Alvarez/0000-0001-7767-4810; Panizzo, Giancarlo/0000-0002-0352-4833; Arneodo, Michele/0000-0002-7790-7132; Cortezon, Jose Enrique Palencia/0000-0001-8264-0287; Pages, Andres Pacheco/0000-0001-8210-1734; Yazgan, Efe/0000-0001-5732-7950; Tiras, Emrah/0000-0002-5628-7464; Demiroglu, Zuhal Seyma/0000-0001-7977-7127; Peleganchuk, Sergey V/0000-0003-0907-7592; Zhemchugov, Evgeny V/0000-0002-0914-9739; Ricca, Giuseppe Della/0000-0003-2831-6982; Alberich, Leonor Cerda/0000-0002-5567-4278; Iglesias, Maria Cruz Fouz/0000-0003-2950-976X; Boimska, Bozena/0000-0002-4200-1541; Da Silveira, Gustavo Gil/0000-0003-3514-7056; uysal, zekeriya/0000-0002-7110-8065; Ferencek, Dinko/0000-0001-9116-1202; Smirnova, Oxana G/0000-0003-2517-531X; Padilla, Cristobal/0000-0001-7951-0166; TOPAKSU, Aysel KAYIS/0000-0001-5819-6913; Demiroglu, Zuhal Seyma/0000-0001-7977-7127; Ippolito, Valerio/0000-0001-5126-1620; Valero, Alberto/0000-0002-9776-5880; Blekman, Freya/0000-0002-7366-7098; Terkulov, Adel/0000-0003-4985-3226; CAKIR, Altan/0000-0002-8627-7689; Berger, N/0000-0002-7963-9725; Gokbulut, Gul/0000-0002-0175-6454; Ivanchenko, Vladimir N/0000-0002-1844-5433; KHODINOV, ALEKSANDR/0000-0003-3551-5808; Tikhomirov, Vladimir/0000-0002-9634-0581; Bagliesi, Giuseppe/0000-0003-4298-1620; Llacer, Maria Moreno/0000-0003-1113-3645; De Guio, Federico/0000-0001-5927-8865; AGHEORGHIESEI, Catalin/0000-0003-3695-1847; Andreev, Vladimir F/0000-0002-5492-6920; Gladilin, Leonid K./0000-0001-9422-8636; Battilana, Carlo/0000-0002-3753-3068; Lazzaroni, Massimo/0000-0002-4094-1273; Meridiani, Paolo/0000-0002-8480-2259; de la Torre Perez, Hector/0000-0002-4516-5269; Betti, Alessandra/0000-0003-0839-9311; Malawski, Maciej/0000-0001-6005-0243; Goh, Junghwan/0000-0002-1129-2083; Steggemann, Jan/0000-0003-4420-5510; Gustavino, Giuliano/0000-0002-5938-4921; Loukas, Dimitris/0000-0002-7431-3857; Lopez, Oscar Gonzalez/0000-0002-4532-6464; Dudko, Lev/0000-0002-4462-3192; Ivanchenko, Vladimir/0000-0002-1844-5433; Schioppa, Enrico Junior/0000-0002-1369-9944; Wulz, Claudia-Elisabeth E/0000-0001-9226-5812; Mikestikova, Marcela/0000-0003-1277-2596; Di Florio, Adriano/0000-0003-3719-8041; Fallavollita, Francesco/0000-0003-2315-2499; Nechaeva, Polina Y/0000-0002-5910-4117; Obertino, Maria Margherita/0000-0002-8781-8192; Cuevas-Maestro, Francisco Javier/0000-0001-5080-0821; Grinstein, Sebastian/0000-0002-6460-8694; Vaniachine, Alexandre/0000-0002-0367-5666; Guler, Y./0000-0001-7598-5252; Veckalns, Viesturs/0000-0003-3676-9711; Stahl, Achim/0000-0002-8369-7506; Ligabue, Franco/0000-0002-1549-7107; Bortignon, Pierluigi/0000-0002-5360-1454; Mitsou, Vasiliki/0000-0002-1533-8886; Gandrajula, Reddy Pratap/0000-0001-9053-3182; Autermann, Christian/0000-0002-0057-0033; Levchenko, Mikhail/0000-0002-5495-0656; Saka, Halil/0000-0001-7616-2573; Farooque, Trisha/0000-0003-1363-9324; Ghneimat, Mazuza/0000-0002-4931-2764; Yorita, Kohei/0000-0003-1988-8401; Becherer, Fabian/0000-0003-0562-4616; Kharlamova, Tatyana/0000-0002-0387-6804; Barranco Navarro, Laura/0000-0002-3380-8167; Mistry, Khilesh/0000-0001-7577-1588; Lethuillier, Morgan/0000-0001-6185-2045; Zenz, Seth/0000-0002-9720-1794; Tudorache, Alexandra/0000-0001-6307-1437; Monaco, Vincenzo/0000-0002-3617-2432; Kasemann, Matthias/0000-0002-0429-2448; Consuegra Rodriguez, Sandra/0000-0002-1383-1837; Golling, Tobias/0000-0001-8535-6687; Schultz-Coulon, Hans-Christian/0000-0002-0860-7240; Cepeda, Maria/0000-0002-6076-4083; Yabsley, Bruce/0000-0002-2680-0474; Arling, Jan-Hendrik/0000-0002-1577-5090; Zanetti, Marco/0000-0003-4281-4582; Wielers, Monika/0000-0001-9232-4827; Ntekas, Konstantinos/0000-0001-9252-6509; Rossi, Biagio/0000-0002-0807-8772; Turra, Ruggero/0000-0001-8740-796X; Feng, Minyu/0000-0002-0698-1482; Zhang, Kaili/0000-0002-9778-9209; Hopkins, Walter/0000-0001-7814-8740; Vaidya, Amal/0000-0003-4086-9432; Frankenthal, Andre/0000-0002-2583-5982; Schaarschmidt, Jana/0000-0002-0433-6439; Bruscino, Nello/0000-0002-6168-689X; Ghosh, Saranya/0000-0001-6717-0803; Heindl, Maximilian/0000-0002-2831-463X; Manjarres Ramos, Joany/0000-0003-3896-5222; Ridel, Melissa/0000-0002-2601-7420; Cadamuro, Luca/0000-0001-8789-610X; Fehr, Armin/0000-0001-9488-8095; Ferreira de Lima, Danilo Enoque/0000-0002-6606-3595; Giangiacomi, Nico/0000-0001-7314-0168; Yang, Hongtao/0000-0003-3554-7113; Mincer, Allen/0000-0002-6307-1418; Blumenfeld, Barry/0000-0003-1150-1735; Straessner, Arno/0000-0003-2460-6659; Mousa, Jehad/0000-0002-2978-2718; Wu, Yusheng/0000-0002-1528-4865; Dubinin, Mikhail/0000-0002-7766-7175; Levchuk, Leonid/0000-0001-5889-7410; Bella, Gideon/0000-0002-4009-0990; Aielli, Giulio/0000-0002-0573-8114; Gonzalez Caballero, Isidro/0000-0002-8087-3199; Czodrowski, Patrick/0000-0003-0723-1437; Wengler, Thorsten/0000-0002-4375-5265; Introzzi, Gianluca/0000-0002-1314-2580; Moenig, Klaus/0000-0002-3169-7117; Gouveia, Emanuel/0000-0002-7785-2047; McPherson, Robert/0000-0001-9211-7019; Goldstein, Joel/0000-0003-1591-6014; Murray, William/0000-0003-1710-6306; Bhowmik, Sandeep/0000-0003-1260-973X; Farina, Edoardo Maria/0000-0003-3037-9288; Soares, Mara/0000-0001-9676-6059; Giannetti, Paola/0000-0002-3721-9490; Garutti, Erika/0000-0003-0634-5539; Callea, Giuseppe/0000-0001-5969-3786; Belyaev, Alexander/0000-0002-1733-4408; Gerosa, Raffaele/0000-0001-8359-3734; Trofymov, Artur/0000-0001-7688-5165; Zghiche, Amina/0000-0002-1178-1450; Heinrich, Jochen Jens/0000-0002-0253-0924; Costa, Salvatore/0000-0001-9919-0569; Backhaus, Malte/0000-0002-5888-2304; Gozzelino, Andrea/0000-0002-6284-1126; Bloom, Kenneth/0000-0002-4272-8900; Durglishvili, Archil/0000-0003-4157-592X; Wenaus, Torre/0000-0002-8678-893X; JEZEQUEL, Stephane/0000-0001-7369-6975; Wolf, Anton/0000-0002-4368-9202; franklin, melissa/0000-0002-6595-883X; Tsai, Fang-Ying/0000-0001-7878-6435; Landsberg, Greg/0000-0002-4184-9380; Krikler, Benjamin/0000-0001-9712-0030; Hanagaki, Kazunori/0000-0003-0676-0441; Leonidopoulos, Christos/0000-0002-7241-2114; Lister, Alison/0000-0002-1552-3651; Corrigan, Eric/0000-0003-2485-0248; Chu, Ming-chung/0000-0002-1971-0403; Bahmani, Marzieh/0000-0003-4173-0926; gabrielli, andrea/0000-0003-0768-9325; Vranjes, Nenad/0000-0001-5415-5225; Malik, Sudhir/0000-0002-6356-2655; Pollard, Christopher/0000-0002-3690-3960; Heath, Matthew/0000-0003-2945-8448; Torro Pastor, Emma/0000-0002-5507-7924; Vilela Pereira, Antonio/0000-0003-3177-4626; Anders, Christoph Falk/0000-0001-6632-6327; FORD, WILLIAM/0000-0001-8703-6943; Lie, Ki/0000-0002-5779-5989; Reeves, Kendall/0000-0003-3504-4882; Lange, Johannes/0000-0001-7513-6330; Vermeulen, Jos/0000-0003-4378-5736; Haddad, Yacine/0000-0003-4916-7752; Coadou, Yann/0000-0001-8195-7004; Nagasaka, Yasushi/0000-0002-3669-9525; Yamazaki, Yuji/0000-0003-3710-6995; Fernandez Bedoya, Cristina/0000-0001-8057-9152; Lee, Lawrence/0000-0002-5590-335X; Genest, Marie-Helene/0000-0002-4098-2024; Yacoob, Sahal/0000-0001-6977-3456; Fox, Harald/0000-0003-3089-6090; Poudyal, Nabin/0000-0003-4278-3464; Romain, Madar/0000-0002-6875-6408; Moraes, Arthur/0000-0002-5157-5686; Glaysher, Paul/0000-0002-5437-971X; Smolek, Karel/0000-0002-5996-7000; Hrynevich, Aliaksei/0000-0002-5411-114X; Russell, Heather/0000-0003-4181-0678; Maniatis, Ioannis/0000-0002-4362-0088; Konecki, Marcin/0000-0001-9482-4841; snyder, scott/0000-0001-8610-8423; Kreczko, Luke/0000-0003-2341-8330; Butterworth, Jonathan/0000-0002-5905-5394; Elsing, Markus/0000-0002-1213-0545; Held, Alexander/0000-0002-8924-5885; Pastrone, Nadia/0000-0001-7291-1979; Petukhova, Krystsina/0000-0002-0654-8398; 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Observation of the Bs0 →x (3872)φ Decay
No full textPubMed: 33095627Using a data sample of proton-proton collisions at root s = 13 TeV, corresponding to an integrated luminosity of 140 fb(-1) collected by the CMS experiment in 2016-2018, the B-s(0) -> X(3872)phi decay is observed. Decays into J/psi pi(+)pi(-) and K+K- are used to reconstruct, respectively, the X(3872) and phi. The ratio of the product of branching fractions B[B-s(0) -> X(3872)phi]B[X(3872) -> J/psi pi(+)pi(-)] to the product B[B-s(0) ->psi(2S)phi]B[psi(2S) -> J/psi pi(+)pi(-)] is measured to be [2.21 +/- 0.29(stat) +/- 0.17(syst)]%. The ratio B[B-s(0) -> X(3872)phi]/B[B-0 -> X(3872)K-0] is found to be consistent with one, while the ratio B[B-s(0) -> X(3872)phi]/B[B+-> X(3872)K+] is two times smaller. This suggests a difference in the production dynamics of the X(3872) in B-0 and B(0)s meson decays compared to B+. The reported observation may shed new light on the nature of the X(3872) particle
Evidence for WW production from double-parton interactions in proton-proton collisions at √s=13 TeV
No full textA search forWWproduction from double-parton scattering processes using same-charge electron-muon and dimuon events is reported, based on proton-proton collision data collected at a center-of-mass energy of 13 TeV. The analyzed data set corresponds to an integrated luminosity of 77.4 fb-1, collected using the CMS detector at the LHC in 2016 and 2017. Multivariate classifiers are used to discriminate between the signal and the dominant background processes. A maximum likelihood fit is performed to extract the signal cross section. This leads to the first evidence for WW production via double-parton scattering, with a significance of 3.9 standard deviations. The measured inclusive cross section is 1.41 +/- 0.28 (stat) +/- 0.28 (syst) pb
Structural stability of physisorbed air-oxidized decanethiols on Au(111)
No full textWe have studied the dynamic behavior of decanethiol and air-oxidized decanethiol self-assembled monolayers (SAMs) on Au(111) using time-resolved scanning tunneling microscopy at room temperature. The air-oxidized decanethiols arrange in a lamellae-like structure leaving the herringbone reconstruction of the Au(111) surface intact, indicating a rather weak interaction between the molecules and the surface. Successive STM images show that the air-oxidized molecules are structurally more stable as compared to the nonoxidized decanethiol molecules. This is further confirmed by performing current-time traces with the feedback loop disabled at different locations and at different molecular phases. Density function theory calculations reveal that the diffusion barrier of the physisorbed oxidized decanethiol molecule on Au(111) is about 100 meV higher than the diffusion barrier of a chemisorbed Au-decanethiol complex on Au(111). A two-dimensional activity map of individual current-time traces performed on the air-oxidized decanethiol phase reveals that all the dynamic events take place within the vacancy lines between the air-oxidized decanethiols. These results reveal that the oxidation of thiols provides a pathway to produce more robust and stable self-assembled monolayers at ambient conditions