429 research outputs found
Measurement of the time-dependent CP asymmetry in B0 -> J/ψ KS0 decays
No full textThis Letter reports a measurement of the CP violation observables SJ/ψK0S and CJ/ψK0S in the decay channel B0→J/ψK0S performed with 1.0 fb−1 of pp collisions at s√=7 TeV collected by the LHCb experiment. The fit to the data yields SJ/ψK0S=0.73±0.07(stat)±0.04(syst) and CJ/ψK0S=0.03±0.09(stat)±0.01(syst). Both values are consistent with the current world averages and within
expectations from the Standard Model
Correction: Strokova et al. Interaction Mechanisms in «Portland Cement—Functional Polymer Mineral Additives» Binder Produced by Different Methods. Materials 2025, 18, 3178
No full textMikhail Lebedev was not included as an author in the original publication [...
Viral fibrotic scoring and drug screen based on MAPK activity uncovers EGFR as a key regulator of COVID-19 fibrosis
No full textUnderstanding the molecular basis of fibrosis, the lethal complication of COVID-19, is urgent. By the analysis of RNA-sequencing data of SARS-CoV-2-infected cells combined with data mining we identified genes involved in COVID-19 progression. To characterize their implication in the fibrosis development we established a correlation matrix based on the transcriptomic data of patients with idiopathic pulmonary fibrosis. With this method, we have identified a cluster of genes responsible for SARS-CoV-2-fibrosis including its entry receptor ACE2 and epidermal growth factor EGF. Then, we developed Vi-Fi scoring—a novel drug repurposing approach and simultaneously quantified antiviral and antifibrotic activities of the drugs based on their transcriptomic signatures. We revealed the strong dual antifibrotic and antiviral activity of EGFR/ErbB inhibitors. Before the in vitro validation, we have clustered 277 cell lines and revealed distinct COVID-19 transcriptomic signatures of the cells with similar phenotypes that defines their suitability for COVID-19 research. By ERK activity monitoring in living lung cells, we show that the drugs with predicted antifibrotic activity downregulate ERK in the host lung cells. Overall, our study provides novel insights on SARS-CoV-2 dependence on EGFR/ERK signaling and demonstrates the utility of EGFR/ErbB inhibitors for COVID-19 treatment
First observation of Bs → J/ψf0(980) decays
No full textUsing data collected with the LHCb detector in proton–proton collisions at a centre-of-mass energy of 7 TeV, the hadronic decay is observed. This CP eigenstate mode could be used to measure mixing-induced CP violation in the system. Using a fit to the π+π− mass spectrum with interfering resonances gives . In the interval ±90 MeV around 980 MeV, corresponding to approximately two full f0 widths we also find , where in both cases the uncertainties are statistical and systematic, respectively
Author Correction: Local Josephson vortex generation and manipulation with a Magnetic Force Microscope (Nature Communications, (2019), 10, 1, (4009), 10.1038/s41467-019-11924-0)
No full text© 2019, The Author(s). The original version of this Article contained an error in the spelling of the author Christophe Brun, which was incorrectly given as Chritophe Brun. Additionally this Article omitted from the author list the seventh author Nickolay Lebedev, who is from the ‘Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia’. These errors have now been corrected in both the PDF and HTML versions of the Article
Measurement of the D+/- production asymmetry in 7 TeV pp collisions
No full textThe asymmetry in the production cross-section \sigma of D+/- mesons, A_P = (\sigma(D+) - \sigma(D-))/(\sigma(D+) + \sigma(D-)), is measured in bins of pseudorapidity \eta and transverse momentum p_T within the acceptance of the LHCb detector. The result is obtained with a sample of D+ -> K_S pi+ decays corresponding to an integrated luminosity of 1.0 fb^-1, collected in pp collisions at a centre of mass energy of 7 TeV at the Large Hadron Collider. When integrated over the kinematic range 2.0 K_S pi+ decay is negligible. No significant dependence on \eta or p_T is observed
Anna Colin Lebedev, Le cœur politique des mères, Analyse du mouvement des mères de soldats en Russie
No full textIn this valuable piece of sociological research Anna Colin Lebedev scrutinizes the modus operandi of a non‑governmental organisation of women activists taking on the essentially male domain of the military authorities in post‑Soviet Russia. With no dearth of academic studies stressing the lack of effective action from below in modern Russia, the author deems the Union of Committees of Soldiers’ Mothers of Russia atypical, based on its assistance for over twenty years to individual families wh..
Analysis of methods for calculating spur gear for deep contact strength
No full textSpur gear is an integral part of transport and technological machines structure. To increase the load ability of the spur gear, chemical heat treatment of the working cogs surfaces is used. Spur gear with chemical heat treatment must be checked for deep contact strength. The article analyzes various methods (according to GOST 21354-87, methods using the generalized criterion of the limit state for structurally inhomogeneous material by Lebedev-Pisarenko, methods from the handbook describing reducers of power machines etc.) for calculating spur and helical gearing for deep contact strength. The author presents all necessary formulas and graphs for the implementation of each methods, and compares the calculations results of these methods with the results of experimental studies of cemented cylindrical rollers for deep contact destruction
Opposition journalist in pre-revolutionary Russia: worker of newspaper “Golos Urala” F. Lebedev (F. Sibirsky) during the election campaign to IV State Duma
No full textСтатья поступила в редакцию 27.05.2014 г.Статья посвящена роли оппозиционного журналиста в системе средств массовой информации Российской империи. В качестве примера взята деятельность секретаря редакции газеты «Голос Урала» Ф. Н. Лебедева (Ф. Сибирского) в период избирательной кампании в IV Государственную думу. На основе изучения публикаций Ф. Н . Л ебедева показано, как он использовал возможности легального периодического издания для изложения взглядов радикальной оппозиции на существовавшую в стране социально-политическую систему.Article is devoted to the role of the opposition journalist in media system of the Russian Empire. An activity of the executive assistant of the newspaper “Golos Urala” F. Lebedev (F. Sibirsky) during the election campaign to IV State Duma is used as an example. With the help of the study of publications by F. Lebedev the author proves us how the possibility of legal periodicals were used in order to expose the views of the radical opposition
Stanzaic Forms in Evenki Poetry (the Example of V. Lebedev`s Works) as a Result of Educational Practice
No full textThe article studies the characteristics of poetry of the Evens – indigenous peoples of the North, Siberia and the Far East. Relying on Russian literature, the author examines the features of stanzas in the work of poets of the Evens. V. Lebedev`s works are analyzed as poetry examples of a representative of the Evens.В статье исследуются особенности поэзии эвенов – коренных малочисленных народов Севера, Сибири и дальнего Востока. Опираясь на российское литературоведение, автор рассматривает особенности строфики в творчестве эвенских поэтов. В качестве репрезентанта эвенской поэзии анализируется творчество В.д. Лебедева
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