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  1. Article: Cryoneurolysis of Intercostal Nerve for Rib Trauma and Intercostal Neuralgia in the Emergency Department: A Multidisciplinary Approach.

    Hashemi, Mani / Mahmood, S M Jafar / Fernandez, Jorge / Oswald, Jessica

    The Journal of emergency medicine

    2022  Volume 63, Issue 3, Page(s) 376–381

    Abstract: Background: Management of pain from traumatic rib injury is very challenging. Both acute and chronic pain caused by rib injury can cause significant morbidity (pain-induced hypoventilation, pneumonia, respiratory failure) and functional hindrance. ... ...

    Abstract Background: Management of pain from traumatic rib injury is very challenging. Both acute and chronic pain caused by rib injury can cause significant morbidity (pain-induced hypoventilation, pneumonia, respiratory failure) and functional hindrance. Traditional pain management strategies in the emergency department (ED) that target acute traumatic rib pain are limited by the side effects of medications or the temporary half-life of anesthetics used for a nerve block. Both treatment modalities fall short of addressing subsequent chronic sequelae.
    Case report: We present the first-time use of cryoneurolysis on an ED patient for the treatment of 10/10 severe traumatic intercostal neuralgia that resulted in the patient being discharged home pain free. The patient initially underwent a multilevel left-sided T5-T7 intercostal nerve block, followed by ultrasound-guided percutaneous cryoneurolysis of those intercostal nerves using two cycles of 2 min of cooling to a temperature of -70°C (nitrous oxide), with 30 s of thawing in between. The patient experienced 100% pain relief immediately post procedure that was sustained. He remained completely symptom free more than 6 months after the bedside procedure and returned to sports without restrictions. Why Should an Emergency Physician Be Aware of This? This case highlights the benefits of cross-departmental collaboration between the ED, Anesthesia, and Pain Management. We hope this model of multidisciplinary pain modulation can be replicated for other patients with similar pain and can herald a new paradigm of pain management in the ED.
    MeSH term(s) Male ; Humans ; Intercostal Nerves/injuries ; Neuralgia/etiology ; Nerve Block/methods ; Emergency Service, Hospital ; Chest Pain ; Thoracic Injuries ; Ribs/surgery
    Language English
    Publishing date 2022-10-12
    Publishing country United States
    Document type Case Reports ; Journal Article
    ZDB-ID 605559-x
    ISSN 0736-4679
    ISSN 0736-4679
    DOI 10.1016/j.jemermed.2022.06.009
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Effect of N-Photovoltaic thermal integrated parabolic concentrator on milk temperature for pasteurization: A simulation study

    Meraj, Md / Mahmood, S.M. / Khan, M.E. / Azhar, Md / Tiwari, G.N.

    Renewable energy. 2021 Jan., v. 163

    2021  

    Abstract: In this study, an effort has been done to develop the thermal modeling of solar milk pasteurization system operated through N number of fully covered semitransparent photovoltaic thermal integrated parabolic concentrator (N/PVT/IPC). The thermal ... ...

    Abstract In this study, an effort has been done to develop the thermal modeling of solar milk pasteurization system operated through N number of fully covered semitransparent photovoltaic thermal integrated parabolic concentrator (N/PVT/IPC). The thermal mathematical model of the present proposed system has been exhaustively demonstrated for the assessment of performance parameters namely, solar cells electrical efficiency, electrical power output, useful thermal energy gain and temperature of milk (which is to be pasteurized) in terms of both design and climatic conditions. Moreover, effect of operating parameters such as mass flow rate of withdrawn milk, number of collector, packing factor, and mass flow rate of collector fluid on milk pasteurization temperature have been comprehensively discussed. The present numerical simulations have been carried out for New Delhi, India climatic condition. Based on mathematical computation, it has been found that milk temperature for pasteurization increases significantly with increase in number of PVT/IPC collectors at lower packing factor. Further, it is also concluded that the proposed pasteurization system under optimal design and operating parameters can produce 216 kg of pasteurized milk and 5.7 kW h of electrical energy. Correspondingly, after simulation it is inferred that the proposed system is self-sustained under 6 h of operation.
    Keywords climatic factors ; electric power ; mass flow ; mathematical models ; milk ; pasteurization ; pasteurized milk ; temperature ; thermal energy ; India
    Language English
    Dates of publication 2021-01
    Size p. 2153-2164.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 2001449-1
    ISSN 1879-0682 ; 0960-1481
    ISSN (online) 1879-0682
    ISSN 0960-1481
    DOI 10.1016/j.renene.2020.10.103
    Database NAL-Catalogue (AGRICOLA)

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  3. Article ; Online: Splenic volvulus of a wandering spleen.

    Schaeffer, William J / Mahmood, S M Jafar / Vermillion, Sarah A / Sweet, Raphael / Haas, Nathan L

    The American journal of emergency medicine

    2020  Volume 41, Page(s) 265.e1–265.e3

    Abstract: Background: Wandering spleen is a rare condition in which the spleen is not anchored properly, due to congenital or acquired weakness of the splenic ligaments. This allows the spleen to migrate to any portion of the abdomen or pelvis, and can cause ... ...

    Abstract Background: Wandering spleen is a rare condition in which the spleen is not anchored properly, due to congenital or acquired weakness of the splenic ligaments. This allows the spleen to migrate to any portion of the abdomen or pelvis, and can cause complications, including a splenic volvulus. The presentation of splenic volvulus of a wandering spleen ranges from mild pain to a surgical emergency. Splenic volvulus of a wandering spleen can cause significant morbidity and mortality, and often warrants surgical intervention. Cases of splenic volvulus of a wandering spleen have been reported in radiology and surgery literature, however there are no reports in emergency medicine literature in North America.
    Case report: A 37-year-old female presented to the ED with seven days of mild left upper quadrant abdominal pain that acutely worsened. She underwent laboratory studies which were near her baseline values. A CT abdomen pelvis demonstrated findings consistent with splenic volvulus of a wandering spleen. She was taken emergently to the operating room for exploratory laparotomy, detorsion of spleen, and splenectomy. Her postoperative course was uneventful and she was discharged on hospital day six. Splenic volvulus of a wandering spleen is rare, though carries significant morbidity and mortality, especially if unrecognized. The presentation of splenic volvulus is variable, ranging from minor symptoms to an acute abdomen. Early diagnosis can prevent downstream complications, including development of vascular congestion, ischemia or infarcted intra-abdominal organs. Emergency Physicians should consider splenic volvulus in the differential diagnosis as an etiology of left-sided abdominal pain.
    MeSH term(s) Adult ; Female ; Humans ; Splenic Diseases/diagnosis ; Splenic Diseases/etiology ; Splenic Diseases/surgery ; Wandering Spleen/complications
    Language English
    Publishing date 2020-08-19
    Publishing country United States
    Document type Case Reports ; Journal Article
    ZDB-ID 605890-5
    ISSN 1532-8171 ; 0735-6757
    ISSN (online) 1532-8171
    ISSN 0735-6757
    DOI 10.1016/j.ajem.2020.08.048
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Ocular dominance, coexistent retinal disease, and refractive errors in patients with cataract surgery.

    Jehangir, Naz / Mahmood, S M Jafar / Mannis, Tova / Moshirfar, Majid

    Current opinion in ophthalmology

    2016  Volume 27, Issue 1, Page(s) 38–44

    Abstract: Purpose of review: The purpose of this article is to highlight some common issues when planning cataract surgery in patients with preexisting ocular pathologies and to assess the role of ocular dominance in cataract surgery.: Recent findings: In ... ...

    Abstract Purpose of review: The purpose of this article is to highlight some common issues when planning cataract surgery in patients with preexisting ocular pathologies and to assess the role of ocular dominance in cataract surgery.
    Recent findings: In addition to routine ocular examination, determination of ocular dominance and orthoptic evaluation for tropias, phorias, amblyopia, and diplopia can be helpful in planning for cataract surgery as these factors can affect postoperative outcomes. Although once controversial, cataract surgery by phacoemulsification is often a well tolerated and effective option for patients with coexistent retinal conditions including epiretinal membrane, age-related macular degeneration, diabetic retinopathy, and macular holes.
    Summary: It is mandatory to recognize phorias, tropias, anisometropia, and amblyopia when planning cataract surgery. Visual potential, ocular dominance, refractive errors, and other retinal comorbidities influence cataract surgery planning and outcome.
    MeSH term(s) Cataract/physiopathology ; Cataract Extraction ; Dominance, Ocular ; Humans ; Postoperative Complications ; Refractive Errors ; Retinal Diseases/complications ; Visual Acuity
    Language English
    Publishing date 2016-01
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 1049383-9
    ISSN 1531-7021 ; 1040-8738
    ISSN (online) 1531-7021
    ISSN 1040-8738
    DOI 10.1097/ICU.0000000000000215
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Comprehensive Review of the Literature on Existing Punctal Plugs for the Management of Dry Eye Disease.

    Jehangir, Naz / Bever, Greg / Mahmood, S M Jafar / Moshirfar, Majid

    Journal of ophthalmology

    2016  Volume 2016, Page(s) 9312340

    Abstract: Numerous designs of punctal and canalicular plugs are available on the market. This variety presents challenges to ophthalmologists when choosing punctal plugs for the management of various ocular conditions. The aim of this literature review is to ... ...

    Abstract Numerous designs of punctal and canalicular plugs are available on the market. This variety presents challenges to ophthalmologists when choosing punctal plugs for the management of various ocular conditions. The aim of this literature review is to provide a classification system for lacrimal occlusive devices based on their location and duration of action as well as to identify different characteristics of each one of them. We want to give a comprehensive overview on punctal and canalicular plugs including their manufacturing companies, indications, and complications that have been reported in various articles. PubMed and Google Scholar were used to identify articles written in English as well as few articles written in Japanese, Chinese, Slovak, and Spanish that had abstracts in English. Nine different companies that manufacture punctal and canalicular plugs were identified and their plugs were included in this review. Punctal and canalicular plugs are used in the management of various ocular conditions including dry eye disease and punctal stenosis as well as in ocular drug delivery. Although they are a relatively safe option, associated complications have been reported in the literature such as infection, allergic reaction, extrusion, and migration.
    Language English
    Publishing date 2016-03-07
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2546525-9
    ISSN 2090-0058 ; 2090-004X
    ISSN (online) 2090-0058
    ISSN 2090-004X
    DOI 10.1155/2016/9312340
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Long-term health-related quality of life in living liver donors: A south Asian experience.

    Cherian, P Thomas / Mishra, Ashish Kumar / Mahmood, S M Faisal / Sathyanarayanan, Mohan / Raya, Ravichandra / Kota, Venugopal / Rela, Mohamed S

    Clinical transplantation

    2017  Volume 31, Issue 3

    Abstract: Aim: The aim of this study was to evaluate long-term health-related quality of life (HRQOL), changes in lifestyle, and complications in living liver donors at a single transplant center from southern India.: Methods: A total of 64 consecutive living ... ...

    Abstract Aim: The aim of this study was to evaluate long-term health-related quality of life (HRQOL), changes in lifestyle, and complications in living liver donors at a single transplant center from southern India.
    Methods: A total of 64 consecutive living liver donors from 2008 to 2011 were evaluated; 46 of 64 donors completed the short form 36 (SF-36) via telephonic interviews or clinic consultations. Mean follow-up was 48 months (range: 37-84 months).
    Results: There was no mortality in the donors evaluated. Overall morbidity was 23%, which included wound infections (4.3%), incisional hernia (2.1%), biliary leak (4.3%), and nonspecific complaints regarding the incision site (15.2%). All 46 donors who completed the SF-36 had no change in career path or predonation lifestyle. A total of 40 of 46 (87%) donors had no limitations, decrements, or disability in any domain, while six of 46 (13%) had these in some domains of which general health (GH) was most severely affected.
    Conclusions: Living donor hepatectomy is safe with acceptable morbidity and excellent long-term HRQOL with no change in career path or significant alteration of lifestyle for donors.
    MeSH term(s) Adult ; Female ; Humans ; India ; Liver Transplantation ; Living Donors ; Male ; Middle Aged ; Quality of Life ; Surveys and Questionnaires ; Time Factors ; Tissue and Organ Harvesting ; Young Adult
    Language English
    Publishing date 2017-02-15
    Publishing country Denmark
    Document type Journal Article
    ZDB-ID 639001-8
    ISSN 1399-0012 ; 0902-0063
    ISSN (online) 1399-0012
    ISSN 0902-0063
    DOI 10.1111/ctr.12882
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Schistosomiasis--a viable differential for haematuria in travelers in Pakistan.

    Khalid, S E / Mahmood, S M

    JPMA. The Journal of the Pakistan Medical Association

    2001  Volume 51, Issue 9, Page(s) 325–327

    MeSH term(s) Adult ; Hematuria/etiology ; Humans ; Male ; Pakistan ; Schistosomiasis haematobia/complications ; Travel
    Language English
    Publishing date 2001-09
    Publishing country Pakistan
    Document type Case Reports ; Journal Article
    ZDB-ID 603873-6
    ISSN 0030-9982
    ISSN 0030-9982
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Elliptic Flow of Electrons from Beauty-Hadron Decays in Pb-Pb Collisions at sqrt[s_{NN}]=5.02  TeV.

    Acharya, S / Adamová, D / Adler, A / Adolfsson, J / Aggarwal, M M / Aglieri Rinella, G / Agnello, M / Agrawal, N / Ahammed, Z / Ahmad, S / Ahn, S U / Akbar, Z / Akindinov, A / Al-Turany, M / Alam, S N / Albuquerque, D S D / Aleksandrov, D / Alessandro, B / Alfanda, H M /
    Alfaro Molina, R / Ali, B / Ali, Y / Alici, A / Alizadehvandchali, N / Alkin, A / Alme, J / Alt, T / Altenkamper, L / Altsybeev, I / Anaam, M N / Andrei, C / Andreou, D / Andronic, A / Angeletti, M / Anguelov, V / Anson, C / Antičić, T / Antinori, F / Antonioli, P / Apadula, N / Aphecetche, L / Appelshäuser, H / Arcelli, S / Arnaldi, R / Arratia, M / Arsene, I C / Arslandok, M / Augustinus, A / Averbeck, R / Aziz, S / Azmi, M D / Badalà, A / Baek, Y W / Bagnasco, S / Bai, X / Bailhache, R / Bala, R / Balbino, A / Baldisseri, A / Ball, M / Balouza, S / Banerjee, D / Barbera, R / Barioglio, L / Barnaföldi, G G / Barnby, L S / Barret, V / Bartalini, P / Bartels, C / Barth, K / Bartsch, E / Baruffaldi, F / Bastid, N / Basu, S / Batigne, G / Batyunya, B / Bauri, D / Bazo Alba, J L / Bearden, I G / Beattie, C / Bedda, C / Behera, N K / Belikov, I / Bell Hechavarria, A D C / Bellini, F / Bellwied, R / Belyaev, V / Bencedi, G / Beole, S / Bercuci, A / Berdnikov, Y / Berenyi, D / Bertens, R A / Berzano, D / Besoiu, M G / Betev, L / Bhasin, A / Bhat, I R / Bhat, M A / Bhatt, H / Bhattacharjee, B / Bianchi, A / Bianchi, L / Bianchi, N / Bielčík, J / Bielčíková, J / Bilandzic, A / Biro, G / Biswas, R / Biswas, S / Blair, J T / Blau, D / Blume, C / Boca, G / Bock, F / Bogdanov, A / Boi, S / Bok, J / Boldizsár, L / Bolozdynya, A / Bombara, M / Bonomi, G / Borel, H / Borissov, A / Bossi, H / Botta, E / Bratrud, L / Braun-Munzinger, P / Bregant, M / Broz, M / Bruna, E / Bruno, G E / Buckland, M D / Budnikov, D / Buesching, H / Bufalino, S / Bugnon, O / Buhler, P / Buncic, P / Buthelezi, Z / Butt, J B / Bysiak, S A / Caffarri, D / Caliva, A / Calvo Villar, E / Camacho, J M M / Camacho, R S / Camerini, P / Canedo, F D M / Capon, A A / Carnesecchi, F / Caron, R / Castillo Castellanos, J / Castro, A J / Casula, E A R / Catalano, F / Ceballos Sanchez, C / Chakraborty, P / Chandra, S / Chang, W / Chapeland, S / Chartier, M / Chattopadhyay, S / Chauvin, A / Cheshkov, C / Cheynis, B / Chibante Barroso, V / Chinellato, D D / Cho, S / Chochula, P / Chowdhury, T / Christakoglou, P / Christensen, C H / Christiansen, P / Chujo, T / Cicalo, C / Cifarelli, L / Cilladi, L D / Cindolo, F / Ciupek, M R / Clai, G / Cleymans, J / Colamaria, F / Colella, D / Collu, A / Colocci, M / Concas, M / Conesa Balbastre, G / Conesa Del Valle, Z / Contin, G / Contreras, J G / Cormier, T M / Corrales Morales, Y / Cortese, P / Cosentino, M R / Costa, F / Costanza, S / Crochet, P / Cuautle, E / Cui, P / Cunqueiro, L / Dabrowski, D / Dahms, T / Dainese, A / Damas, F P A / Danisch, M C / Danu, A / Das, D / Das, I / Das, P / Das, S / Dash, A / Dash, S / De, S / De Caro, A / de Cataldo, G / de Cuveland, J / De Falco, A / De Gruttola, D / De Marco, N / De Pasquale, S / Deb, S / Degenhardt, H F / Deja, K R / Deloff, A / Delsanto, S / Deng, W / Dhankher, P / Di Bari, D / Di Mauro, A / Diaz, R A / Dietel, T / Dillenseger, P / Ding, Y / Divià, R / Dixit, D U / Djuvsland, Ø / Dmitrieva, U / Dobrin, A / Dönigus, B / Dordic, O / Dubey, A K / Dubla, A / Dudi, S / Dukhishyam, M / Dupieux, P / Ehlers, R J / Eikeland, V N / Elia, D / Erazmus, B / Erhardt, F / Erokhin, A / Ersdal, M R / Espagnon, B / Eulisse, G / Evans, D / Evdokimov, S / Fabbietti, L / Faggin, M / Faivre, J / Fan, F / Fantoni, A / Fasel, M / Fecchio, P / Feliciello, A / Feofilov, G / Fernández Téllez, A / Ferrero, A / Ferretti, A / Festanti, A / Feuillard, V J G / Figiel, J / Filchagin, S / Finogeev, D / Fionda, F M / Fiorenza, G / Flor, F / Flores, A N / Foertsch, S / Foka, P / Fokin, S / Fragiacomo, E / Frankenfeld, U / Fuchs, U / Furget, C / Furs, A / Fusco Girard, M / Gaardhøje, J J / Gagliardi, M / Gago, A M / Gal, A / Galvan, C D / Ganoti, P / Garabatos, C / Garcia, J R A / Garcia-Solis, E / Garg, K / Gargiulo, C / Garibli, A / Garner, K / Gasik, P / Gauger, E F / Gay Ducati, M B / Germain, M / Ghosh, J / Ghosh, P / Ghosh, S K / Giacalone, M / Gianotti, P / Giubellino, P / Giubilato, P / Glaenzer, A M C / Glässel, P / Gomez Ramirez, A / Gonzalez, V / González-Trueba, L H / Gorbunov, S / Görlich, L / Goswami, A / Gotovac, S / Grabski, V / Graczykowski, L K / Graham, K L / Greiner, L / Grelli, A / Grigoras, C / Grigoriev, V / Grigoryan, A / Grigoryan, S / Groettvik, O S / Grosa, F / Grosse-Oetringhaus, J F / Grosso, R / Guernane, R / Guittiere, M / Gulbrandsen, K / Gunji, T / Gupta, A / Gupta, R / Guzman, I B / Haake, R / Habib, M K / Hadjidakis, C / Hamagaki, H / Hamar, G / Hamid, M / Hannigan, R / Haque, M R / Harlenderova, A / Harris, J W / Harton, A / Hasenbichler, J A / Hassan, H / Hassan, Q U / Hatzifotiadou, D / Hauer, P / Havener, L B / Hayashi, S / Heckel, S T / Hellbär, E / Helstrup, H / Herghelegiu, A / Herman, T / Hernandez, E G / Herrera Corral, G / Herrmann, F / Hetland, K F / Hillemanns, H / Hills, C / Hippolyte, B / Hohlweger, B / Honermann, J / Horak, D / Hornung, A / Hornung, S / Hosokawa, R / Hristov, P / Huang, C / Hughes, C / Huhn, P / Humanic, T J / Hushnud, H / Husova, L A / Hussain, N / Hussain, S A / Hutter, D / Iddon, J P / Ilkaev, R / Ilyas, H / Inaba, M / Innocenti, G M / Ippolitov, M / Isakov, A / Islam, M S / Ivanov, M / Ivanov, V / Izucheev, V / Jacak, B / Jacazio, N / Jacobs, P M / Jadlovska, S / Jadlovsky, J / Jaelani, S / Jahnke, C / Jakubowska, M J / Janik, M A / Janson, T / Jercic, M / Jevons, O / Jin, M / Jonas, F / Jones, P G / Jung, J / Jung, M / Jusko, A / Kalinak, P / Kalweit, A / Kaplin, V / Kar, S / Karasu Uysal, A / Karatovic, D / Karavichev, O / Karavicheva, T / Karczmarczyk, P / Karpechev, E / Kazantsev, A / Kebschull, U / Keidel, R / Keil, M / Ketzer, B / Khabanova, Z / Khan, A M / Khan, S / Khanzadeev, A / Kharlov, Y / Khatun, A / Khuntia, A / Kileng, B / Kim, B / Kim, D / Kim, D J / Kim, E J / Kim, H / Kim, J / Kim, J S / Kim, M / Kim, S / Kim, T / Kirsch, S / Kisel, I / Kiselev, S / Kisiel, A / Klay, J L / Klein, C / Klein, J / Klein, S / Klein-Bösing, C / Kleiner, M / Kluge, A / Knichel, M L / Knospe, A G / Kobdaj, C / Köhler, M K / Kollegger, T / Kondratyev, A / Kondratyeva, N / Kondratyuk, E / Konig, J / Konigstorfer, S A / Konopka, P J / Kornakov, G / Koska, L / Kovalenko, O / Kovalenko, V / Kowalski, M / Králik, I / Kravčáková, A / Kreis, L / Krivda, M / Krizek, F / Krizkova Gajdosova, K / Krüger, M / Kryshen, E / Krzewicki, M / Kubera, A M / Kučera, V / Kuhn, C / Kuijer, P G / Kumar, L / Kundu, S / Kurashvili, P / Kurepin, A / Kurepin, A B / Kuryakin, A / Kushpil, S / Kvapil, J / Kweon, M J / Kwon, J Y / Kwon, Y / La Pointe, S L / La Rocca, P / Lai, Y S / Lamanna, M / Langoy, R / Lapidus, K / Lardeux, A / Larionov, P / Laudi, E / Lavicka, R / Lazareva, T / Lea, R / Leardini, L / Lee, J / Lee, S / Lehner, S / Lehrbach, J / Lemmon, R C / León Monzón, I / Lesser, E D / Lettrich, M / Lévai, P / Li, X / Li, X L / Lien, J / Lietava, R / Lim, B / Lindenstruth, V / Lindner, A / Lippmann, C / Lisa, M A / Liu, A / Liu, J / Liu, S / Llope, W J / Lofnes, I M / Loginov, V / Loizides, C / Loncar, P / Lopez, J A / Lopez, X / López Torres, E / Luhder, J R / Lunardon, M / Luparello, G / Ma, Y G / Maevskaya, A / Mager, M / Mahmood, S M / Mahmoud, T / Maire, A / Majka, R D / Malaev, M / Malik, Q W / Malinina, L / Mal'Kevich, D / Malzacher, P / Mandaglio, G / Manko, V / Manso, F / Manzari, V / Mao, Y / Marchisone, M / Mareš, J / Margagliotti, G V / Margotti, A / Marín, A / Markert, C / Marquard, M / Martin, C D / Martin, N A / Martinengo, P / Martinez, J L / Martínez, M I / Martínez García, G / Masciocchi, S / Masera, M / Masoni, A / Massacrier, L / Masson, E / Mastroserio, A / Mathis, A M / Matonoha, O / Matuoka, P F T / Matyja, A / Mayer, C / Mazzaschi, F / Mazzilli, M / Mazzoni, M A / Mechler, A F / Meddi, F / Melikyan, Y / Menchaca-Rocha, A / Mengke, C / Meninno, E / Menon, A S / Meres, M / Mhlanga, S / Miake, Y / Micheletti, L / Migliorin, L C / Mihaylov, D L / Mikhaylov, K / Mishra, A N / Miśkowiec, D / Modak, A / Mohammadi, N / Mohanty, A P / Mohanty, B / Khan, M Mohisin / Moravcova, Z / 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    Physical review letters

    2021  Volume 126, Issue 16, Page(s) 162001

    Abstract: The elliptic flow of electrons from beauty hadron decays at midrapidity (|y|<0.8) is measured in Pb-Pb collisions at sqrt[s_{NN}]=5.02  TeV with the ALICE detector at the LHC. The azimuthal distribution of the particles produced in the collisions can be ... ...

    Abstract The elliptic flow of electrons from beauty hadron decays at midrapidity (|y|<0.8) is measured in Pb-Pb collisions at sqrt[s_{NN}]=5.02  TeV with the ALICE detector at the LHC. The azimuthal distribution of the particles produced in the collisions can be parametrized with a Fourier expansion, in which the second harmonic coefficient represents the elliptic flow, v_{2}. The v_{2} coefficient of electrons from beauty hadron decays is measured for the first time in the transverse momentum (p_{T}) range 1.3-6  GeV/c in the centrality class 30%-50%. The measurement of electrons from beauty-hadron decays exploits their larger mean proper decay length cτ≈500  μm compared to that of charm hadrons and most of the other background sources. The v_{2} of electrons from beauty hadron decays at midrapidity is found to be positive with a significance of 3.75  σ. The results provide insights into the degree of thermalization of beauty quarks in the medium. A model assuming full thermalization of beauty quarks is strongly disfavored by the measurement at high p_{T}, but is in agreement with the results at low p_{T}. Transport models including substantial interactions of beauty quarks with an expanding strongly interacting medium describe the measurement within uncertainties.
    Language English
    Publishing date 2021-05-06
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.126.162001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Soft-Dielectron Excess in Proton-Proton Collisions at sqrt[s]=13  TeV.

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    Physical review letters

    2021  Volume 127, Issue 4, Page(s) 42302

    Abstract: A measurement of dielectron production in proton-proton (pp) collisions at sqrt[s]=13  TeV, recorded with the ALICE detector at the CERN LHC, is presented in this Letter. The data set was recorded with a reduced magnetic solenoid field. This enables the ... ...

    Abstract A measurement of dielectron production in proton-proton (pp) collisions at sqrt[s]=13  TeV, recorded with the ALICE detector at the CERN LHC, is presented in this Letter. The data set was recorded with a reduced magnetic solenoid field. This enables the investigation of a kinematic domain at low dielectron (ee) invariant mass m_{ee} and pair transverse momentum p_{T,ee} that was previously inaccessible at the LHC. The cross section for dielectron production is studied as a function of m_{ee}, p_{T,ee}, and event multiplicity dN_{ch}/dη. The expected dielectron rate from hadron decays, called hadronic cocktail, utilizes a parametrization of the measured η/π^{0} ratio in pp and proton-nucleus collisions, assuming that this ratio shows no strong dependence on collision energy at low transverse momentum. Comparison of the measured dielectron yield to the hadronic cocktail at 0.15<m_{ee}<0.6  GeV/c^{2} and for p_{T,ee}<0.4  GeV/c indicates an enhancement of soft dielectrons, reminiscent of the "anomalous" soft-photon and soft-dilepton excess in hadron-hadron collisions reported by several experiments under different experimental conditions. The enhancement factor over the hadronic cocktail amounts to 1.61±0.13(stat)±0.17(syst,data)±0.34(syst,cocktail) in the ALICE acceptance. Acceptance-corrected excess spectra in m_{ee} and p_{T,ee} are extracted and compared with calculations of dielectron production from hadronic bremsstrahlung and thermal radiation within a hadronic many-body approach.<br />
    Language English
    Publishing date 2021-08-06
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.127.042302
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Multiharmonic Correlations of Different Flow Amplitudes in Pb-Pb Collisions at sqrt[s_{NN}]=2.76  TeV.

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    Physical review letters

    2021  Volume 127, Issue 9, Page(s) 92302

    Abstract: The event-by-event correlations between three flow amplitudes are measured for the first time in Pb-Pb collisions, using higher-order symmetric cumulants. We find that different three-harmonic correlations develop during the collective evolution of the ... ...

    Abstract The event-by-event correlations between three flow amplitudes are measured for the first time in Pb-Pb collisions, using higher-order symmetric cumulants. We find that different three-harmonic correlations develop during the collective evolution of the medium when compared to correlations that exist in the initial state. These new results cannot be interpreted in terms of previous lower-order flow measurements since contributions from two-harmonic correlations are explicitly removed in the new observables. A comparison to Monte Carlo simulations provides new and independent constraints for the initial conditions and system properties of nuclear matter created in heavy-ion collisions.
    Language English
    Publishing date 2021-09-10
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.127.092302
    Database MEDical Literature Analysis and Retrieval System OnLINE

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