69,665 research outputs found
Measurement of the ratio of prompt χ c to J / ψ production in pp collisions at √s = 7 TeV
No full textThe prompt production of charmonium χ c and J / ψ states is studied in proton-proton collisions at a centre-of-mass energy of √s = 7 TeV at the Large Hadron Collider. The χ c and J / ψ mesons are identified through their decays χ c → J / ψ γ and J / ψ → μ + μ - using 36 pb - 1 of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for χ c and J / ψ, σ (χ c → J / ψ γ) / σ (J / ψ), is determined as a function of the J / ψ transverse momentum in the range 2 < p T J / ψ < 15 GeV / c. The results are in excellent agreement with next-to-leading order non-relativistic expectations and show a significant discrepancy compared with the colour singlet model prediction at leading order, especially in the low p T J / ψ region
Paracantha trinotata Norrbom & Sutton & Steck & Monzón 2010, new combination
No full textParacantha trinotata (Foote), new combination Figs. 53, 63–64, 102 Laksyetsa trinotata Foote 1978: 29. Biology. The only previously reported host plant is Dahlia tenuicaulis Sorenson (Foote 1978). We also reared it from D. imperialis Roezl (Asteraceae: Coreopsideae) (Fig. 65) in Mexico and Guatemala. The larvae feed and pupate in the capitulum (Fig. 63–64). Distribution. Mexico (Durango, Morelos, Oaxaca) and Guatemala. Previously known only from mountainous areas in Mexico, including the Sierra Madre Occidental (Durango), the transverse volcanic belt (Morelos), and the Sierra Madre del Sur (Oaxaca), P. trinotata also occurs in highland areas of Guatemala (Jalapa, Sacatepéquez, Totonicapán). Material examined. GUATEMALA: Jalapa: Jalapa - Mataquescuintla Road, 14.57766°N 90.09416°W, 2210 m, emerged 17 Dec 2007 reared ex flowerheads of Dahlia imperialis collected 21 Nov 2007, B.D. Sutton, G.J. Steck, A.L. Norrbom, J. Monzón, 1♂ (FSCA), 2♂ (USNM USNMENT00671280–81). Sacatepéquez: Cerro Carmona, Finca El Pilar, lower road, 14.54031°N 90.7066°W, 2265 m, emerged 9 Dec 2008 reared ex flowerheads of Dahlia imperialis (07G05A) collected 12 Nov 2007, B.D. Sutton, A.L. Norrbom, J. Monzón, 1♀ (FSCA), 1♂ 1♀ (USNM USNMENT00671278–79). Totonicapán: Hwy. CA-1 8.5 km (air) N Pologuá, 15.11712°N 91.52301°W, 2434 m, emerged 14–21 Dec 2007 reared ex flowerheads of Dahlia imperialis collected 23 Nov 2007, B.D. Sutton, G.J. Steck, A.L. Norrbom, J. Monzón, 2♂ 2♀ (FSCA), 4♂ 3♀ (USNM USNMENT00671304-11); Hwy. CA-1, km 209, 2 km NNE of Pologuá (air), 15.05858°N 91.49648°W, 2761 m, emerged 12–20 Dec 2007 reared ex flowerheads of Dahlia imperialis ( 07G57) collected 23 Nov 2007, B.D. Sutton, G.J. Steck, A.L. Norrbom, J. Monzón, 7♂ 3♀ (FSCA), 1♂ 1♀ (UVG), 9♂ 10♀ (USNM USNMENT00671282–300). MEXICO: Morelos: Lagunas de Zempoala, 2805 m, 11 Aug 1962, G. L. Bush, 1♀ (MSUL); Lagunas de Zempoala [19°2'58"N 99°19'3"W], on Dahlia imperialis, 9–11 Aug 1989, A. L. Norrbom, 2♀ (IEXV USNMENT00104379–80), 1♂ 4♀ (USNM USNMENT00104374–78); Lagunas de Zempoala, reared ex capitulum of Dahlia imperialis (91M16), 23–25 Sep 1991, A. L. Norrbom, 2♂ 2♀ (IEXV USNMENT00213345–48), 8♂ 10♀ (USNM USNMENT00213349–66), 5♂ 5♀ (BMNH, CDFA, MHNG, TAMU, TAUI).Published as part of Norrbom, Allen L., Sutton, Bruce D., Steck, Gary J. & Monzón, José, 2010, New genera, species and host plant records of Nearctic and Neotropical Tephritidae (Diptera) 2398, pp. 1-65 in Zootaxa 2398 on page 3
A comparison of the fungal genera Phaeophleospora and Kirramyces (coelomycetes)
No full textPhaeophleospora eugeniae Rangel, the type species of Phaeophleospora Rangel, has recently been collected and cultured from leaf spots of Eugenia uniflora L. in Brazil. Based on its brown, verruculose, percurrently proliferating conidiogenous cells, conidiomatal anatomy and conidial morphology, Phaeophleospora is resurrected as the earlier name for the recently established coelomycete genus, Kirramyces J. Walker, B. Sutton & I. Pascoe. New combinations are proposed for the seven former species of Kirramyces, namely P. destructans (W. J. Wingf. & Crous) Crous, F.A. Ferreira & B. Sutton, P. epicoccoides (Cooke & Massee) Crous, F.A. Ferreira & B. Sutton, P. eucalypti (Cooke & Massee) Crous, F.A. Ferreira & B. Sutton, P. hebes (W. Wu, B, Sutton & A.C. Gange) Crous, F.A. Ferreira & B. Sutton, P. lilianiae (J. Walker, B. Sutton & I. Pascoe) Crous, F.A. Ferreira & B. Sutton, P. proteae (B. Sutton) Crous, F.A. Ferreira & B. Sutton and P. phormii (Naito) Crous, F.A. Ferreira & B, Sutton combs, nov
A comparison of the fungal genera Phaeophleospora and Kirramyces (coelomycetes)
No full textPhaeophleospora eugeniae Rangel, the type species of Phaeophleospora Rangel, has recently been collected and cultured from leaf spots of Eugenia uniflora L. in Brazil. Based on its brown, verruculose, percurrently proliferating conidiogenous cells, conidiomatal anatomy and conidial morphology, Phaeophleospora is resurrected as the earlier name for the recently established coelomycete genus, Kirramyces J. Walker, B. Sutton and I. Pascoe, New combinations are proposed for the seven former species of Kirramyces, namely P. destructans (W. J. Wingf. and Crous) Crous, F.A. Ferreira and B. Sutton, P. epicoccoides (Cooke and Massee) Crous, F.A. Ferreira and B. Sutton, P. eucalypti(Cooke and Massee) Crous, F.A. Ferreira and B. Sutton, P. hebes (W. Wu, B. Sutton and A.C. Gange) Crous, F.A. Ferreira and B. Sutton, P. lilianiae (J. Walker, B. Sutton and I. Pascoe) Crous, F.A. Ferreira and B. Sutton, P. proteae (B. Sutton) Crous, F.A. Ferreira and B. Sutton and P. phormil(Nalto) Crous, F.A. Ferreira and B. Sutton combs. nov.Articl
Letter from Carl Hayden to P. J Moran
No full textLetter from Carl T. Hayden to P. J. Moran concerning the alignment of the road to Bright Angel Trail
Letter from P. J. Moran to Carl Hayden
No full textLetter from P. J. Moran to Carl T. Hayden inquiring when construction will begin on the approach road to Bright Angel Trail
Letter from P. J. Moran to Carl Hayden
No full textLetter from P. J. Moran to Carl T. Hayden inquiring when construction will begin on the approach road to Bright Angel Trai
Bayesian inference analysis of unmodelled gravitational-wave transients
No full textWe report the results of an in-depth analysis of the parameter estimation capabilities of BayesWave, an algorithm for the reconstruction of gravitational-wave signals without reference to a specific signal model. Using binary black hole signals, we compare BayesWave's performance to the theoretical best achievable performance in three key areas: sky localisation accuracy, signal/noise discrimination, and waveform reconstruction accuracy. BayesWave is most effective for signals that have very compact time-frequency representations. For binaries, where the signal time-frequency volume decreases as the system mass increases, we find that BayesWave's performance reaches or approaches theoretical optimal limits for system masses above approximately 50 M-circle dot. For such systems BayesWave is able to localise the source on the sky as well as templated Bayesian analyses that rely on a precise signal model, and it is better than timing-only triangulation in all cases. We also show that the discrimination of signals against glitches and noise closely follows analytical predictions, and that only a small fraction of signals are discarded as glitches at a false alarm rate of 1/100 yr. Finally, the match between BayesWave-reconstructed signals and injected signals is broadly consistent with first-principles estimates of the maximum possible accuracy, peaking at about 0.95 for high mass systems and decreasing for lower-mass systems. These results demonstrate the potential of unmodelled signal reconstruction techniques for gravitational-wave astronomy
Telegrams Between Carl Hayden to P. J. Moran, Democratic County Central Committee
No full textTelegram from Carl Hayden to P. J. Moran regarding the resignation of W. W. Crosby and his replacement J. R. Eakin
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