93,792 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
Almeida C, Barreto A. — Capitalismo e emigraçao em Portugal
No full textH. J. Almeida C, Barreto A. — Capitalismo e emigraçao em Portugal. In: Population, 27ᵉ année, n°2, 1972. p. 348
Alpheus petronioi Almeida, Terossi & Mantelatto 2014
No full textAlpheus petronioi Almeida, Terossi & Mantelatto, 2014 (Figure 1I) Alpheus petronioi Almeida, Terossi & Mantelatto, 2014: 57, figs 1–3; 4C, D. Material examined. Brazil, São Paulo: 1 ♀, CCDB 4728, Cananéia, intertidal region in the ferry terminal to Ilha Comprida, coll. T. Davanso & R. Pescinelli, 26.ix.2013. Distribution. Western Atlantic—Colombia, Venezuela, Brazil (Pará, Bahia, São Paulo). Previous records. Cananéia (Almeida et al. 2014). Remarks. Alpheus petronioi belongs to the A. heterochaelis species complex (Almeida et al. 2014). The records of A. heterochaelis from São Paulo made by Luederwaldt (1919) correspond, at least in part, to the A. armillatus complex (Christoffersen 1984; Anker 2012). Other records of A. heterochaelis from São Paulo (e.g., Luederwaldt 1929; Abreu 1980; Mortari & Negreiros-Fransozo 2007) and from other regions of the Brazilian coast mentioned by Soledade & Almeida (2013) must be carefully considered because they may include misidentified species. GenBank accession number: CCDB 4728—16S (KU312975), COI (KU313005).Published as part of Almeida, Alexandre O., Terossi, Mariana, Buranelli, Raquel C., Castilho, Antonio L., Costa, Rogério C., Zara, Fernando J. & Mantelatto, Fernando L., 2018, Checklist of decapods (Crustacea) from the coast of São Paulo State (Brazil) supported by integrative molecular and morphological data: II. Infraorder Caridea: family Alpheidae, pp. 331-358 in Zootaxa 4450 (3) on page 340, DOI: 10.11646/zootaxa.4450.3.2, http://zenodo.org/record/145255
Alpheus buckupi Almeida, Terossi, Araujo-Silva & Mantelatto 2013
No full textAlpheus buckupi Almeida, Terossi, Araújo-Silva & Mantelatto, 2013 (Figure 1B) Alpheus buckupi Almeida et al., 2013: 440, figs. 1–4. Material examined. Brazil, São Paulo: 1 ♀ (parental with larvae), CCDB 3494, Ubatuba, Praia Grande, coll. F. Mantelatto, 27.xi.2002; 1 ♀ ov, CCDB 1205, São Sebastião, Araçá, coll. F. Mantelatto, 17.vi.2004; 1 ♀ ov, CCDB 1907, São Sebastião, Araçá, coll. F. Mantelatto et al., 04.v.2007; 1 ♂, 1 ♀ ov, CCDB 4883, São Sebastião, Araçá, coll. F. Mantelatto & L. Pardo, 10.ix.2013; 1 ♀, CCDB 5505, São Sebastião, Araçá, coll. F. Mantelatto et al., 02.xii.2014; 1 ♂, CCDB 3823, Cananéia, IO/ USP, coll. F. Mantelatto et al., 29.viii.2011. Distribution. Western Atlantic—Guadeloupe, Venezuela (Orinoco Delta), Brazil (Pará, Ceará, Rio Grande do Norte, Pernambuco, Alagoas, Sergipe, Bahia, São Paulo). Eastern Atlantic—São Tomé and Príncipe (Almeida et al. 2013; 2014; Barros-Alves et al. 2015; Pachelle et al. 2016). Previous records. Ubatuba, São Sebastião Island, São Sebastião and Santos (Almeida et al. 2013). Remarks. GenBank accession number: CCDB 1205—16 S (KU312967).Published as part of Almeida, Alexandre O., Terossi, Mariana, Buranelli, Raquel C., Castilho, Antonio L., Costa, Rogério C., Zara, Fernando J. & Mantelatto, Fernando L., 2018, Checklist of decapods (Crustacea) from the coast of São Paulo State (Brazil) supported by integrative molecular and morphological data: II. Infraorder Caridea: family Alpheidae, pp. 331-358 in Zootaxa 4450 (3) on pages 335-336, DOI: 10.11646/zootaxa.4450.3.2, http://zenodo.org/record/145255
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)
Chnoodes machadoi Krüger, Castro-Guedes & Almeida, 2016, sp. nov.
No full textChnoodes machadoi sp. nov. (Figure 7) Material examined. BRAZIL: Mato Grosso: “Cáceres, MT./ 13.XI. 1984 /Buzzi, Mielke, Elias/Casagrande leg./ Proj. Polonoroeste”, “Dptº Zool./UF - Paraná”, “ DZUP 188269 ”, “ HOLOTYPE / Chnoodes machadoi Krüger, Castro-Guedes & Almeida, 2015 ” [red label]; “Cáceres, MT./ 11.XI. 1984 /Buzzi, Mielke, Elias/Casagrande leg./ Proj. Polonoroeste”, “Dptº Zool./UF - Paraná”, [DZUP 188250, 188272], “ PARATYPE / Chnoodes machadoi Krüger, Castro-Guedes & Almeida, 2015 ” [yellow label]; “Cáceres, MT./ 13.XI. 1984 /Buzzi, Mielke, Elias/ Casagrande leg./Proj. Polonoroeste”, “Dptº Zool./UF - Paraná”, [DZUP 188249, 188270], “ PARATYPE / Chnoodes machadoi Krüger, Castro-Guedes & Almeida, 2015 ” [yellow label]; “Cáceres, MT/ 19.XI. 1984 /Buzzi, Mielke, Elias/Casagrande leg./Proj. Polonoroeste”, “Dptº Zool./UF - Paraná”, [DZUP 188266, 188267], “ PARATYPE / Chnoodes machadoi Krüger, Castro-Guedes & Almeida, 2015 ” [yellow label]; “Cáceres, MT./ 10.XI. 1984 /Buzzi, Mielke, Elias/Casagrande leg./Proj. Polonoroeste”, “Dptº Zool./UF - Paraná”, [DZUP 188271], “ PARATYPE / Chnoodes machadoi Krüger, Castro-Guedes & Almeida, 2015 ” [yellow label]. Goiás: “Dianópolis/GO, Brasil / 16–22.I. 1962 /J. Bechyné col.”, [DZUP 188237] “ PARATYPE / Chnoodes machadoi Krüger, Castro-Guedes & Almeida, 2015 ” [yellow label]. Male. Length 2.84–2.88 mm, width 2.08–2.16 mm. Body oval, with sparse white pubescence. Pronotum black with yellowish border and two small lateral spots. Elytra black with yellowish border and two yellowish areas below callus and near apex (Figs 7 A–D). Head, antennae and mouthparts orange. Meso- and metasternum dark brown or black; legs yellowish; epipleuron yellowish; first ventrites black or brownish (Fig. 7 B). Genitalia with basal lobe symmetrical, stout, shorter than parameres, apex bluntly pointed (Fig. 7 E). Parameres short and narrow (Fig. 7 F). Sipho rounded at apex, siphonal capsule rounded and short (Fig. 7 G). Female. Length 3.04–3.16 mm, width 2.20–2.24 mm. Genitalia with genital plates triangular, elongated, styli with setae (Fig. 7 H). Spermatheca C-shaped, short, apex narrow (Fig. 7 I). Etymology. This species is named in honor of the dedicated entomologist Doctor Angelo Barbosa Monteiro Machado, an expert in the taxonomy of dragonflies (Odonata) and endangered species, on the occasion of his 80 th birthday. Geographical Distribution. Brazil (MT, GO). Remarks. Chnoodes machadoi sp. nov. (Fig. 7) is similar to C. discomaculata (Fig. 3) and C. tarsalis (Fig. 6) in the color pattern, but is distinguished by the yellowish border of elytra. The male and female genitalia are also distinct.Published as part of Krüger, Thaysa C., Castro-Guedes, Camila F. & Almeida, Lúcia M., 2016, Two new species of Chnoodes Chevrolat (Coleoptera: Coccinellidae) from Brazil, pp. 269-283 in Zootaxa 4078 (1) on pages 279-281, DOI: 10.11646/zootaxa.4078.1.24, http://zenodo.org/record/26066
Chnoodes unimaculata Krüger, Castro-Guedes & Almeida, 2016, sp. nov.
No full textChnoodes unimaculata sp. nov. (Figure 8) Material examined. BRAZIL: Amapá: “Oiapoque/Amapá - Brasil / V. 1959 /M. Alvarenga col.”, “Ex-Coleção/M. Alvarenga”, [DZUP 188165] “ HOLOTYPE [female]/ Chnoodes unimaculata Krüger, Castro-Guedes & Almeida, 2015 ” [red label]; “ Brasil - Amapá/Macapá/ 16.III. 2004 /J. F. F. Martins, [DZUP 186838] “ PARATYPE [female]/ Chnoodes unimaculata Krüger, Castro-Guedes & Almeida, 2015 ” [yellow label]. Holotype. Female. Length 3.16 mm, width 2.40 mm. Body round, with sparse yellowish pubescence. Pronotum black, with yellowish lateral border. Elytra black with one elongated yellowish spot on disc (Figs 8 A–D). Head, antennae and mouthparts dark yellowish. Meso- and metasternum dark brown or black; legs yellowish; epipleuron with black spots; first ventrites black (Fig. 8 B). Genitalia with genital plates triangular, elongated, styli with setae (Fig. 8 E). Spermatheca C-shaped, apex short and rounded (Fig. 8 F). Male. Unknown. Etymology. The name of this species refers to the single spot on each elytron. Geographical Distribution. Brazil (AP). Remarks. Chnoodes unimaculata sp. nov. (Fig. 8) resembles C. machadoi sp. nov. (Fig. 7), but is clearly distinguished by the color, shape and number of spots on the elytra; it also differs in the shape of the female genitalia.Published as part of Krüger, Thaysa C., Castro-Guedes, Camila F. & Almeida, Lúcia M., 2016, Two new species of Chnoodes Chevrolat (Coleoptera: Coccinellidae) from Brazil, pp. 269-283 in Zootaxa 4078 (1) on pages 281-282, DOI: 10.11646/zootaxa.4078.1.24, http://zenodo.org/record/26066
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
Letter from J. E. Gavin to Louis C. Cramton regarding Sale of Bright Angel Trail
No full textLetter from J. E. Gavin to Louis C. Cramton regarding the Bright Angel Trail controversy, including newspaper clipping
Comparison of J-R curves and JC values of C(T) and M(T) specimens of bidirectional GLARE 3 5/4 0.3 fiber-metal laminates
No full textThe experimental evaluation and comparison of J-R curves from compact tension C(T) and middle-crack tension M(T) specimens of commercial GLARE 3 5/4 0.3 fiber-metal laminates was done. Fracture tests were performed on 50 mm wide C(T) specimens with crack to width ratio a/W = 0.5, and 230 mm wide M(T) specimens having two different crack to width ratios, 2a/W = 0.25 and 0.35. For C(T) specimens J-R curves were evaluated based on the ASTM E1820 standard methodology, whereas for M(T) specimens the ASTM E561 standard methodology was applied. In both cases crack length was measured through unloading compliance. The results indicate that unloading compliance is applicable to bidirectional GLARE laminates in both geometries, estimating the stable crack growth during the tests with reasonable accuracy. The results also showed good agreement between J-R curves from both geometries, as well as similar J values at the beginning of stable crack growth. The experimental J-R curves were slightly higher for M(T) specimens, which were many times larger than C(T) ones
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