51,456 research outputs found
Evidence for the decay B0→J/ψω and measurement of the relative branching fractions of meson decays to J/ψη and J/ψη′
No full textFirst evidence of the B 0 → J / ψ ω decay is found and the B s 0 → J / ψ η and B s 0 → J / ψ η ′ decays are studied using a dataset corresponding to an integrated luminosity of 1.0 fb -1 collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. The branching fractions of these decays are measured relative to that of the B 0 → J / ψ ρ 0 decay:frac(B (B 0 → J / ψ ω), B (B 0 → J / ψ ρ 0)) = 0.89 ± 0.19 (stat) - 0.13 + 0.07 (syst),frac(B (B s 0 → J / ψ η), B (B 0 → J / ψ ρ 0)) = 14.0 ± 1.2 (stat) - 1.5 + 1.1 (syst) - 1.0 + 1.1 (frac(f d, f s)),frac(B (B s 0 → J / ψ η ′), B (B 0 → J / ψ ρ 0)) = 12.7 ± 1.1 (stat) - 1.3 + 0.5 (syst) - 0.9 + 1.0 (frac(f d, f s)), where the last uncertainty is due to the knowledge of f d / f s, the ratio of b-quark hadronization factors that accounts for the different production rate of B 0 and B s 0 mesons. The ratio of the branching fractions of B s 0 → J / ψ η ′ and B s 0 → J / ψ η decays is measured to befrac(B (B s 0 → J / ψ η ′), B (B s 0 → J / ψ η)) = 0.90 ± 0.09 (stat) - 0.02 + 0.06 (syst)
APC/C and SCFcyclin F Constitute a Reciprocal Feedback Circuit Controlling S-Phase Entry
No full textSummaryThe anaphase promoting complex/cyclosome (APC/C) is an ubiquitin ligase and core component of the cell-cycle oscillator. During G1 phase, APC/C binds to its substrate receptor Cdh1 and APC/CCdh1 plays an important role in restricting S-phase entry and maintaining genome integrity. We describe a reciprocal feedback circuit between APC/C and a second ubiquitin ligase, the SCF (Skp1-Cul1-F box). We show that cyclin F, a cell-cycle-regulated substrate receptor (F-box protein) for the SCF, is targeted for degradation by APC/C. Furthermore, we establish that Cdh1 is itself a substrate of SCFcyclin F. Cyclin F loss impairs Cdh1 degradation and delays S-phase entry, and this delay is reversed by simultaneous removal of Cdh1. These data indicate that the coordinated, temporal ordering of cyclin F and Cdh1 degradation, organized in a double-negative feedback loop, represents a fundamental aspect of cell-cycle control. This mutual antagonism could be a feature of other oscillating systems
Corrigendum to “Presence and function of kisspeptin/KISS1R system in swine ovarian follicles” (Theriogenology (2018) 115 (1–8), (S0093691X1830147X), (10.1016/j.theriogenology.2018.04.006))
No full textThe authors regret the following changes to the author group G. Basinia, F. Grassellia, S. Bussolatia, R. Ciccimarraa, M. Maranesib, A. Bufalarib, C. Dall'Agliob, F. Parilloc,#, M. Zeranib,c,*. a Dipartimento di Scienze Mediche Veterinarie, Università di Parma, 43126 Parma, Italy. b Dipartimento di Medicina Veterinaria, Università di Perugia, 06126 Perugia Italy. c Scuola di Bioscienze e Medicina Veterinaria, Università di Camerino, 62024 Matelica Italy. # Deceased. * Corresponding author: tel.: +39 0755857642; fax +39 0755857654. E-mail address: [email protected] (M. Zerani). And to the acknowledgements and figures
Measurement of the CP-violating phase \phi s in Bs->J/\psi\pi+\pi- decays
No full textMeasurement of the mixing-induced CP-violating phase phi_s in Bs decays is of prime importance in probing new physics. Here 7421 +/- 105 signal events from the dominantly CP-odd final state J/\psi pi+ pi- are selected in 1/fb of pp collision data collected at sqrt{s} = 7 TeV with the LHCb detector. A time-dependent fit to the data yields a value of phi_s=-0.019^{+0.173+0.004}_{-0.174-0.003} rad, consistent with the Standard Model expectation. No evidence of direct CP violation is found
Papillacarus (Vepracarus) Aoki 1965
No full textKey to the adults of known species of Papillacarus (Vepracarus) of the world 1 Anal and adanal plates separated throughout their length...................................................... 2 - Anal and adanal plates separated anteriorly and fused posteriorly.............................................. 20 2 Notogastral setae tree shaped............................................................................ 3 - Notogastral setae smooth, setiform, barbed or ciliate......................................................... 8 3 Notogaster with thickly punctate tubercles [India, Vietnam].................... P. (V.) cornutus (Sarkar & Subías, 1984) - Notogaster with papilli................................................................................. 4 4 an 2 shorter than the distance between an 1 and an 2............................................................ 5 - an 2 as long as or longer than the distance between an 1 and an 2.................................................. 7 5 Notogastral bands absent [Cáucaso]............................................... P. (V.) abchasicus Tarba, 1985 - Notogastral bands present............................................................................... 6 6 Sensillus with 9–10 long pectinations; notogastral band S 5 present [China]. P. (V.) hexagonus Ren, Yang, Liang & Xie, 2018 - Sensillus with 13–14 long pectinations; notogastral band S 5 absent [Japan, Tahiti. Tongatapu, India, Philippines, Vietnam, Iran]......................................................................... P. (V.) hirsutus (Aoki, 1961) 7 All genital setae branched; exa as long as or longer than the distance between exa and in [Korea]............................................................................................... P. (V.) koreanus (Mahunka, 1973) - Anterior pairs of genital setae branched and posterior pairs simple; exa shorter than the distance between exa and in [Senegal, Vietnam]...................................................................... P. (V.) gueyeae (Pérez-Íñigo, 1989)................................................................................................ 8 ss with long branches; notogastral setae variable in size and nature.............................................. 9 - ss with short barbs; notogastral setae c 1, d 1 and e 1 thin and smooth, others ciliate [Iran, Spain]............................................................................................. P. (V.) chamartinensis Pérez-Íñigo, 1967 9 All primary notogastral setae barbed, branched or ciliate..................................................... 10 - At least two pairs of primary notogastral setae smooth....................................................... 18 10 Notogaster possess polygonal ornamentation.............................................................. 11 - Notogaster without polygonal ornamentation, either with papilli or tubercles..................................... 12 11 Setae c1, d1, f1 almost same in length [Brazil]......................... P. (V.) parapolysetosus Ermilov & Tolstikov, 2015 - Setae c 1, d 1, f 1 differ in length (c 1 > d 1 > f 1 ) [Vietnam]................... P. (V.) polysetosus Ermilov, Anichkin & Wu, 2012 12 Seta in with long branches [Indonesia]............................................. P. (V.) ramosus Balogh, 1961 - Seta in setiform, ciliate................................................................................ 13 13 Notogastral bands indistinct............................................................................ 14 - Notogastral bands distinct............................................................................. 16 14 Rostrum more or less rectilinear with median angular incision [Vietnam]............................................................................................... P. (V.) whitteni Fernández, Theron, Rollard & Leiva, 2015 - Rostrum narrowly round or truncate, without median incision................................................. 15 15 Genital setae very small, without branches [China, Philippines]....................... P. (V.) cruzae Corpuz-Raros, 1979 - Antero-lateral pairs and two postero-lateral pairs of genital setae long and smooth, rest with short cilia [Vietnam]........................................................................................ P. (V.) luteus Ermilov, 2015 16 All genital setae branched or barbed [China]................................. P. (V.) konglinensis Chen & Yang, 2011 - Setae g 7, g 8 and g 10 smooth, others branched................................................................ 17 17 Neotrichal setae present from e series; setae exp, in and le sub- equal in length [China, Iran]............................................................................................... P. (V.) punctatus (Hu & X. Wang, 1990) - Neotrichal setae present from c series; seta exp longer than le and in [China]............................................................................................. P. (V.) jinggangshanensis (Y. Chen, Yang & Liang, 2010) 18 All prodorsal setae sub-equal in length [Ukraine].................................... P. (V.) akimovi Sergienko, 1992 - Prodorsal setae variable in length........................................................................ 19 19 Seta in as long as the marginal notogastral setae; ss with 16 long branches [Philippines].................................................................................................. P. (V.) ramirezae (Corpuz-Raros, 1979) - Seta in much smaller than the marginal notogastral setae; ss with 11–12 long branches [Iran, Thailand]................................................................................................ P. (V.) ogawai (Aoki, 1965) 20 Prodorsum and notogaster covered with large, finely punctate tubercles [India]................ P. (V.) acaciensis sp. nov. - Prodorsum and notogaster bear pappilli [Bermuda, Cuba, Mexico, St. Lucia]......... P. (V.) incompletus (Mahunka, 1985)Published as part of Arun, A. & Ramani, N., 2020, Two remarkable new species of oribatid mites (Acari: Oribatida) from Acacia litter of Kerala, India, pp. 539-558 in Zootaxa 4877 (3) on pages 548-549, DOI: 10.11646/zootaxa.4877.3.7, http://zenodo.org/record/457050
Global Mapping of HCl on Mars by IRTF/iSHELL
No full textHydrogen chloride (HCl)—a key marker of the chlorine cycle on Mars—has been recently discovered in the Martian atmosphere by the ExoMars/TGO mission. In-orbit data indicate that this molecule appears in the atmosphere only in a limited time period and specifically in the southern summer season. A snapshot global mapping of HCl is indispensable to examine its sources and sinks, but such observations are not currently possible from any orbiters. Here, we present the first spatially resolved map of HCl obtained with the ground-based NASA InfraRed Telescope Facility. We find clear features of HCl, demonstrating that HCl is present close to the surface. HCl is detected in the equatorial region for the first time, revealing that HCl is widely distributed on Mars. However, the spatial distribution of HCl is not uniform, and it is enhanced in the southern polar region. Interestingly, this nonuniform spatial distribution of HCl column abundance is strikingly similar to that of water vapor column abundance. This highlights the important role of water vapor in the evolution of HCl through the atmosphere, as previously noted, and suggests its potential involvement in the atmospheric chlorine source processes
Lympha technique for primary and early secondary prevention of lymphedema following cancer treatment
No full textLYMPHA proved to be an effective preventive procedure that contributes in giving our oncological patients a good quality of life. In this presentation, the author will report indications, technical aspects and benefits of LYMPHA technique
Observation of double charm production involving open charm in pp collisions at sqrt{s}=7 TeV
No full textThe production of J/Ψ mesons accompanied by open charm, and of pairs of open charm hadrons are observed in pp collisions at a centre-of-mass energy of 7TeV using an integrated luminosity of 355 pb -1 collected with the LHCb detector. Model independent measurements of absolute cross-sections are given together with ratios to the measured J/Ψ and open charm cross-sections. The properties of these events are studied and compared to theoretical predictions
New formulae for Zagreb indices
No full textInternational Conference on Numerical Analysis and Applied Mathematics (ICNAAM) -- SEP 19-25, 2016 -- Rhodes, GREECEIn this paper, we study with some graph descriptors also called topological indices. These descriptors are useful in determination of some properties of chemical structures and preferred to some earlier descriptors as they are more practical. Especially the first and second Zagreb indices together with the first and second multiplicative Zagreb indices are considered and they are calculated in terms of the smallest and largest vertex degrees and vertex number for some well-known classes of graphs.Uludag UniversityUludag University [F-2015/17, F-2015/23]; Selcuk UniversitySelcuk UniversityThe first author was supported by the Research Fund of Uludag University project no: F-2015/17, F-2015/23. The last author is supported by Selcuk University Research Fund
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