65,598 research outputs found
Corethrella (Corethrella) borkenti Amaral & Pinho 2015
No full textCorethrella (Corethrella) borkenti Amaral & Pinho, 2015 Fig. 41; Appendix 1 Diagnosis Larva Only bromeliculous species with the following combination of characters: head mostly pale, but mandible, maxilla, segment X, and siphon more darkly pigmented (Amaral & Pinho 2015: fig. 19); postmentum elongate, with margins almost parallel up to basal 0.6, strongly tapering distally (Fig. 41D); prementum with 12–14 darkly pigmented teeth (Fig. 41D); central tooth large, second small, third large and remaining ones gradually decreasing in size (Fig. 41D); seta 15-C bifurcated or forked. Pupa Only bromeliculous species with the following combination of characters: exuvia medium brown (Amaral & Pinho 2015: fig. 16), abdomen elongate and tapering, darker mesially; abdominal segments little expanded laterally, with one dorsal and one lateral well-developed setae (Amaral & Pinho 2015: fig. 18) on each of segments II–VII (these setae longer than respective segments, largest ones about twice as long); dorsal setae progressively shorter from V–VII; all setae darkly pigmented; respiratory organ tubular, very elongate, expanded at apex (Amaral & Pinho 2015: fig. 17). Material examined BRAZIL – Bahia State • 1 ♂, adult; Ilhéus, UESC Max de Menezes; 14°47ʹ54ʺ S, 39°10ʹ24ʺ W; 21 May 2019; A.P. Amaral leg.; Mirco’s bromeliad; CE-MHS • 1 ♀, adult, with larval and pupal exuviae; Ilhéus, Cabruca da UESC; 14°47ʹ48ʺ S, 39°10ʹ20ʺ W; 35 m a.s.l.; 16 May 2019; A.P. Amaral leg.; bromeliad; CE-MHS • 1 ♀, adult, with larval and pupal exuviae; Porto Seguro, RPPN Estação Veracel, Trilha 12-09; 16°19ʹ38ʺ S, 39°07ʹ22ʺ W; 73 m a.s.l.; 28 Aug. 2019; A.P. Amaral leg.; bromeliad; CE-MHS. – Santa Catarina State • 1 ♀, adult; Grão Pará, Parque Estadual Serra Furada, CAPEA stream; 28°11ʹ26ʺ S, 49°23ʹ30ʺ W; 16 Nov. 2012 – 7 Jan. 2013; L.C. Pinho, M.C. Novaes and M.F. Haddad leg.; Malaise trap; CE-MHS • 1 ♀, adult, with larval and pupal exuviae; Florianópolis, Pantanal, Rua Sulcar; 27°36ʹ35ʺ S, 48°30ʹ57ʺ W; 53 m a.s.l.; 21 Jul. 2016; A.P. Amaral leg.; bromeliad; CE-MHS. Description Male and female adults (1 ♂, 4 ♀♀) HEAD. Sensilla (Fig. 41A): Ocular row with 1 thick offset seta at ventral part and 1 more dorsally, followed by 13–15 setae shortly extending posteriorly. Subocular row well-defined with about 20 slender setae from interocular space to posterior portion. Vertex with a few scattered setae. Postgenal row with 6–15 slender setae, ranging from mid-posterior portion of head to ventromedially. With 2 thick ventromedial setae. THORAX. Sensilla (Fig. 41B): Antepronotum with 1–2 dorsal and 3–7 anteroventral intermediate setae. Postpronotum with 1 thick dorsal, 1 slender anterodorsal, and 4–5 more ventrally located setae. Scutum, prescutal area with 2 thick and 2–4 intermediate setae, dorsoventrally aligned near prescutal suture; 0–7 intermediate/slender anterior setae. Antealar area with cluster of about 5–7 thick, 4–8 intermediate, and 6–9 slender setae located ventrally; 11–25 slender dorsal setae. Supraalar area with 3–4 thick and 0–1 intermediate setae aligned longitudinally, about 6–9 slender setae surrounding. Dorsocentral row, posterior part with cluster of 4–6 thick and about 3–7 slender setae; approximately 17–23 thick/ intermediate and 38–41 slender filling row. Scutellum with 12–14 thick setae. Posterior anepisternum bare. Anepimeron with 5–17 slender setae. WING. Male R 3 /R 1: 0.40; R 2+3 /R 2: 0.94. Female R 3 /R 1: 0.51 (0.47–0.55); R 2+3 /R 2: 0.66 (0.59–0.73). LEGS. Empodium (Fig. 41C) of intermediate length and thickness, with 5 branches. Male Ta1/Ta2: 3.00; Ta3/Ta4: 1.60. Female Ta1/Ta2: 2.90 (2.71–3.00); Ta3/Ta4: 1.09 (1.08–1.13). Larva (n = 3) EXUVIA (Amaral & Pinho 2015: fig. 19). Head mostly pale; mandible, maxilla, segment X, and siphon more darkly pigmented; without tergal plates. HEAD (Fig. 41D). Wide, somewhat round in dorsoventral view, 1.22 (1.19–1.25) times as wide as long. Antenna 0.41 (0.40–0.41) times length of head; antennal groove 1.36 (1.25–1.48) times length of antenna. Ventral margin of antennal groove serrate. Postmentum elongate, with margins almost parallel until basal 0.6, strongly tapering distally; 1.13 (1.11–1.14) times as wide as long; length 0.58 (0.57–0.59) of head. Prementum (Amaral & Pinho 2015: figs 21–22) curved, with 12–14 darkly pigmented teeth; central tooth largest, second tooth small, third large, remaining ones gradually smaller.Anteroventral projection of gena strongly projected anteriorly, surface smooth. Postcoila extending to lateral margin of gena. Subgenal carina without spinules. Crown with 13–17 regularly distributed spines, sizes growing towards lateral, ventral spines shortest; largest spine 0.08 mm (0.07–0.09) long. Seta 16-C anterolateral to crown. Mandible, apical tooth 1.62 (1.43–1.83) times length of first dorsal tooth; seta 3-Mn 0.43 (0.42–0.43) times length of 4-Mn; lacinia mobilis with 8 blades; mandibular lobe well-developed, pale, contiguous to teeth. Sensilla: 9-C short, fan-like; 10-C elongate, simple; 11-C elongate, simple or forked; 12-C elongate, simple; 13-C short, fan-like; 14-C moderately elongate, simple; 15-C moderately elongate, bifurcated or forked; 16-C elongate, bifurcated. 0a-Mn short, fan-like; 0b-Mn elongate, simple. 6-Mx short, bifurcated; 4-Mx moderately elongate, simple; 5-Mx short, fan-like. SIPHON (Amaral & Pinho 2015: fig. 28). 0.32 mm (0.30–0.34) long. Seta 1 forked, situated at 0.19 (0.11–0.26) of length from base; 6-S pale, 9-S darkly pigmented; length of 6-S/9-S: 0.54 (0.48–0.60). Pupa (n = 3) EXUVIA (Amaral & Pinho 2015: fig. 16). Medium brown, with abdominal segments II–VII darker mesially; setae darkly pigmented, except cephalothorax dorsal 1, setae on terminal process lightly pigmented. CEPHALOTHORAX. Length 1.32 mm (1.17–1.61). Dorsal seta 1 pale, short, moderately thick; about one length apart from dorsal 2; dorsal 2 darkly pigmented, of same basal thickness, about four times as long; both setae arising from undifferentiated cuticle. Metathoracic 2 and supraalar 2 sensilla present. Metathoracic seta 1 short, simple. ABDOMEN (Amaral & Pinho 2015: fig. 18). Elongate, tapering from IV–VII, dorsal tegument smooth; length of segments I–VIII: 1.37 mm (1.17–1.73), width/length: 0.54 (0.49–0.58). Margins serrate, moderately expanded laterally, somewhat posteriorly from VI–VIII. Largest seta L-2-II, 1.79 (1.68– 1.94) times length of segment. Terminal process moderately elongate, basal width 0.70 (0.67–0.72) of length, with paddles moderately tapering from base; D-1-IX short, at about 0.50 from base; apical spine articulated; ventroapical seta V-1-IX about 3 times as long as apical spine; female genital lobe tapered at midlength, distinctly narrower than base of paddles; genital lobe elongate in male, slightly tapering, extending to half length of paddles. Chaetotaxy as illustrated. Distribution and biology Examined individuals with their associated exuviae were collected as larvae from bromeliads in the Atlantic forest of Santa Catarina and Bahia states. Adults were collected with light traps (Amaral et al. 2019). This species has been recorded at altitudes ranging from 35 to 248 m a.s.l. Remarks In the original description, Amaral & Pinho (2015) recognized as a diagnostic feature of the species the exceptionally elongate pupal respiratory organ, with a length 13–18 times its basal width. The specimens examined here show a less elongated respiratory organ, with a length/width ratio ranging from 9.5 to 13. The other diagnostic features of immatures and adults, however, made it possible to confidently identify the specimens. Moreover, in the original description, the long lateral seta on the abdomen of the pupa is indicated as L-4, but we here reinterpret it as an L-2 seta. One of the specimens seems to have trifid branches on the empodium, although the position of the legs on the microscope slide make it difficult to confirm this.Published as part of Amaral, André P., Mariano, Rodolfo & Pinho, Luiz Carlos, 2023, Description of five new species of frog-biting midges (Diptera, Corethrellidae) from Brazil and examination of new morphological characters with utility for taxonomic and phylogenetic studies, pp. 1-120 in European Journal of Taxonomy 874 (1) on pages 82-85, DOI: 10.5852/ejt.2023.874.2135, http://zenodo.org/record/803774
Brasilia, una nuova savana tra i setti di Niemeyer
No full textBRASILIA (BRASILE). A Brasilia, un’inedita forma di giardino prende vita nel cuore del Minhocão (parola che in portoghese indica un creatura leggendaria simile ad un verme), l’Istituto Centrale delle Scienze dell’Università di Brasilia, inaugurato nel 1963: uno degli edifici più iconici progettati da Oscar Niemeyer, lungo un chilometro
Avaliação da contaminação por agrotóxicos numa microbacia do Córrego Tenente Amaral, Jaciara, MT.
No full textO agronegócio é hoje um dos setores de maior participação na economia nacional, representando 23,3% do produto interno bruto do país. A produção de grãos é um dos principais setores, crescendo de forma surpreendente nas últimas décadas. No entanto, para que tais níveis de produtividade se mantenham, a utilização de insumos, como fertilizantes e agrotóxicos se faz cada vez mais necessária. Consequentemente, nos últimos anos o Brasil assumiu o preocupante título de maior consumidor de agrotóxicos do mundo. A expressiva utilização desses produtos aliada ao desconhecimento dos riscos associados e ao desrespeito às normas básicas de segurança, acabam gerando intoxicação humana e ambiental. Com o objetivo de avaliar a contaminação das águas por pesticidas no córrego Tenente Amaral e seu entorno, no Município de Jaciara - MT, onde predominam monoculturas de soja, milho, girassol algodão e cana, além da pecuária, foi implantado um experimento para monitorar a quantidade de água e solo perdidos por escoamento superficial, pelo período de um ano hidrológico (outubro 2013 a setembro 2014), em seis sistemas coletores com área de 10 m2 cada, sendo três em área de pastagem e três em área de plantio consorciado de soja e milho. Foram monitorados ainda três piezômetros para a avalição da água subterrânea, dois lisímetros para análise da água infiltrada, três pontos no Córrego Tenente Amaral, bem como em afloramentos do lençol freático superficial de duas voçorocas presentes na região. Os pesticidas estudados foram: trifluralina, atrazina, metolacloro, metribuzin, clorpirifós, ? endossulfam e permetrina, sendo a identificação e quantificação por CG/MS. Os resultados indicaram a presença de clorpirifós e atrazina (respectivamente, Altamente Perigoso - Classe I e Perigoso ? Classe III ao meio ambiente) nas águas de escoamento superficial; clorpirifós e metolacloro (Muito Perigoso ao meio ambiente ? Classe II) em águas subterrâneas e metolacloro e metribuzin (Muito Perigoso ? Classe II) em águas superficiais. Na maioria dos pontos os resultados obtidos estavam dentro dos limites permitidos; somente em uma parcela da lavoura encontrou-se o princípio ativo atrazina com concentração de 5,19 ?g.L-1. Embora em baixas concentrações, este estudo demostra a vulnerabilidade ambiental à contaminação constante por agrotóxicos numa microbacia afluente do Rio Tenente Amaral, que por sua vez é tributário do Rio São Lourenço, um dos principais rios formadores do Pantanal Mato-Grossense
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Letter from C. D. Dawson, Tusayan Copper Mining and Smelting, to Carl Hayden
No full textLetter from C. D. Dawson to Carl Hayden urging him to consider the rights of miners and farmers when drawing up the boundaries for the proposed park
Five New Species Of Dichorisandra J. C. Mikan (commelinaceae) From Bahia State, Brazil
No full textSummary: Five new species of the genus Dichorisandra J. C. Mikan are described based on field, herbarium and cultivation studies. The species described here are only known from the Atlantic rain forest from the State of Bahia, Brazil and have anthers with introrse longitudinal slits that are functionally poricidal. D. subtilis Aona & M. C. E. Amaral is characterised by its small habit, erect, densely pilose leaves, flowers in congested inflorescences, 5 stamens and a verrucose ovary. D. variegata Aona & Faden presents terminal, erect or sometimes decumbent inflorescences sprouting from the base of the plant, leaf blades sparsely to densely pilose and with two white longitudinal broad stripes above, and 5 (- 6) stamens. D. jardimii Aona & M. C. E. Amaral is characterised by the axillary inflorescences that perforate the leaf sheaths and arise either directly from the rhizome or from normal terrestrial branches, 5 stamens, a verrucose ovary and cylindrical fruits. D. ordinatiflora Aona & Faden presents axillary inflorescences that perforate the leaf sheaths, inflorescences distributed evenly along the stem, and a reddish indumentum. D. conglomerata Aona & M. C. E. Amaral can be recognised by its completely glabrous leaves, terminal inflorescences, the large number of flowers per cincinnus (7 - 10 flowers), and 5 stamens. Discussion of relevant characters, comparisons with closest relatives, descriptions, information on conservation status and illustrations are provided. © 2012 The Board of Trustees of the Royal Botanic Gardens, Kew.664479491Aona, L.Y.S., (2008) Revisão taxonômica e análise cladística do gênero Dichorisandra J. C. Mikan (Commelinaceae), , (ined.), Ph. D. dissertation. Universidade Estadual de Campinas, São PauloBarreto, R.C., (1997) Levantamento das espécies de Commelinaceae R. Br. nativas do Brasil, , (ined.),Ph. D. dissertation. Universidade de São Paulo, São PauloClarke, C.B., Commelinaceae (1881) Monographiae Phanerogamarum, 3, pp. 272-285. , A. CandolleDe (Ed.), Paris: Sumptibus G. MassonEvans, T.M., Sytsma, K.J., Faden, R.B., Givnish, T.J., Phylogenetics relationships in the Commelinaceae: II. A cladistic analysis of rbcL sequences and morphology (2003) Syst. Bot., 28, pp. 270-292Faden, R.B., Hunt, D.R., The classification of the Commelinaceae (1991) Taxon, 40, pp. 19-31(2001) IUCN Red List Categories and Criteria: Version 3. 1, , IUCN, Prepared by the IUCN Species Survival Commission. IUCN, Gland, Switzerland and Cambridge, U. KMabberley, D.J., (2000) Plant-Book, , 3rd edn., Cambridge: Cambridge University PressStearn, W.T., (1992) Botanical Latin, , 4th edn., Newton Abbot, Devon: David & Charles publWade, D.W., Evans, T.M., Faden, R.B., Subtribal relationships in the tribe Tradescantieae (Commelinaceae) based on rbcL and ndhF sequences (2003) Resumos do Congresso Monocots III - Third International Conference on the Comparative Biology of the Monocotyledons, Califórnia, Estados Unidos, , http://www.monocots3.org/
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
Corethrella xokleng Amaral & Mariano & Pinho 2019, sp. n.
No full textCorethrella xokleng sp. n. (Figures 3–5) Type material. Holotype, male adult, slide mounted: “HOLÓTIPO Corethrella xokleng Amaral, Mariano & Pinho ♂, Grão Pará, SC, BR, Rio Três Barras #11, S28º12’44” W49º27’28”, 15.XI.2012, light trap, LC Pinho, LS Gomes & AL Schlindwein”, (MZUSP). Allotype, adult female, slide mounted, as holotype, except: “ALÓTIPO Corethrella xokleng Amaral, Mariano & Pinho ♀, Rio Braço Esquerdo #17, S28º09’01” W49º21’21”, 16.XI.2012 ” (MZUSP). Paratype: 1 adult female, slide mounted, as allotype (UFSC). Etymology. The specific epithet honors the Xokleng people, the original inhabitants of the type location, who have been brutally decimated since the beginning of colonization by those of European extraction in southern Santa Catarina state. The name is to be regarded as a noun in apposition. Diagnostic characters. This species differs from other extant Corethrella by the following combination of characters: Adult male: trochanter and base of hind femur paler than apex of femur, 3rd palpal segment clavate (apically expanded), 4 thick setae on frons, empodia thick, with 10 bifid branches. Adult female: Wings and legs uniformly pigmented, head rounded in dorsal view, 3rd palpal segment clavate (apically expanded), four thick setae on frons, empodia thick, with 10 bifid branches. Description. Adult male (n=1). (Tables 1, 2, Figs. 3, 4 A–D) Head (Fig. 3A). Rounded in anterior view. Coronal suture long, reaching ventral margin of eye bridge. Four parallel thick setae on frons. Palpus (Fig. 4A) medium brown, with 3rd segment somewhat expanded apically, 5 th segment with about double the length of 4th. Clypeus (Fig. 4B) square with three setae on dorsal surface. Antenna (as in Fig. 4H) brown with flagellomere 13 apically bifurcated. Sensilla coeloconica distributed according to table 1. Thorax (Fig. 3B). Light to medium brown, with mesonotum darker, anepimeron with one seta, pale with central portion more darkly pigmented. Posterior anepisternum with incomplete diagonal suture at ventral margin. Anterior anepisternum divided in half by transversal suture. Prescutal suture long, almost reaching dorsocentral row of setae. Group of five setae on posterior portion of dorsocentral row. Katepisternum pale around ventral margin. Wings (as in Fig. 3B). Plain brown, with setae instead of scales on non-marginal veins. Vein R 1 somewhat bolder. Apex of R 2 basal to the one of M 1. Halter slightly lighter or same color than scutellum. Legs (Fig. 3B). Uniformly medium brown, except midleg trochanter, lighter than femur and trochanter, base of hind femur lighter than apex of femur. Legs without scales. Tarsal claws equal, inserted apically. Empodia (as in Fig. 4C) thicker than apical setae of last tarsomeres, longer than average diameter of last tarsomeres, with 9–10 bifid branches. Abdomen. Uniformly medium to dark brown. Genitalia (Figs. 3C, 4C, D). Gonocoxite (Fig. 3C) medium to dark brown, elongate, slender; dorsal row with five setae, the first slightly thinner than the rest. 5th seta medially dislocated; one dorsomedial thicker seta, tapering from midlength. Gonostylus with constant width subtly bent subapically, with apical seta very short and thick. subbasal seta located posteroventrally at 0.2 of gonostylus, length about 0.3 of gonostylus. Aedeagus (Fig. 4C) long, strongly tapering from base; margins fused near apex. Adult female: (n=2) (Tables 1, 2, Figs. 4 E–H, 5) as for male, except: Head (Fig. 5A). Coronal suture short, ending close to dorsal margin of eye bridge. Palpus (Fig. 4F) with 3rd segment clavate. Clypeus (Fig. 4G) with 6–8 setae on dorsal surface. Sensilla coeloconica distributed according to table 1. Abdomen (Fig. 5D). Medium to dark brown. Cercus equally pigmented. Immatures. Unknown. Distribution and biology. This species is known from three individuals (two females and one male) collected in light traps from type locality, Serra Furada State Park, in Grão Pará, SC, at elevations of 355– 354 m. Serra Furada is a region of Atlantic Forest, interspersed with large areas of Eucalyptus cultivation, near the transition to Araucaria Forest at higher altitudes. The rivers where traps were set are gravel-bed streams, 4–6m wide and about 1m deep. Taxonomic discussion. This species shares the synapomorphies which define the rotunda group (as designated by Borkent, 2008): wings without a pattern of pigmentation and posterior anepisternum with contiguous ventral and dorsal portions. Male flagellomere 8 shorter than both 7 and 9, wing with apex of R 2 basal to apex of M 1 and the presence of setae instead of scales on wing veins place Corethrella xokleng sp. n. among the clade formed by C. kerrvilensis (Stone), C. remiantenalis Borkent, C. blandafemur Borkent, C. brevivena Borkent, and C. globosa Borkent. Corethrella xokleng sp. n. does not share the synapomorphies that group C. remiantenalis with C. blandafemur or C. brevivena with C. globosa, respectively, suggesting it may be the sister to a clade comprised of all four of these species. Females and males of C. xokleng sp. n. were associated by their shared pigmentation patterns on wings and legs, the collecting location, the pattern of empodia and by the 4 setae on the frons, the latter being a unique character among rotunda group.Published as part of Amaral, André P., Mariano, Rodolfo & Pinho, Luiz Carlos, 2019, Four new species and some new records of Brazilian frog-biting midges (Diptera Corethrellidae), pp. 103-120 in Zootaxa 4706 (1) on pages 110-112, DOI: 10.11646/zootaxa.4706.1.4, http://zenodo.org/record/356511
D* (D)over-bar* molecule interpretation of Z(c)(4025)
No full textWe have used QCD sum rules to study the newly observed charged state Z(c)(4025) as a hidden-charm D*(D) over bar* molecular state with the quantum numbers I-G(J(P)) =1(+)(1(+)). Using a D*(D) over bar* molecular interpolating current, we have calculated the two-point correlation function and the spectral density up to dimension eight at leading order in alpha(s). The extracted mass is m(X) = (4.04 +/- 0.24) GeV. This result is compatible with the observed mass of Z(c)(4025) within the errors, which implies a possible molecule interpretation of this new resonance. We also predict the mass of the corresponding hidden-bottom B*(B) over bar* molecular state: m(Zb) = (9.98 +/- 0.21) GeV.Physics, Particles & FieldsSCI(E)[email protected]; [email protected]; [email protected]; [email protected]
Prompt charm production in pp collisions at √<span style="text-decoration:overline">s</span>=7 TeV
No full textCharm production at the LHC in pp collisions at s√=7 TeV is studied with the LHCb detector. The decays D0→K−π+, D+→K−π+π+, D⁎+→D0(K−π+)π+, D+s→ϕ(K−K+)π+, Λ+c→pK−π+, and their charge conjugates are analysed in a data set corresponding to an integrated luminosity of 15 nb−1. Differential cross-sections dσ/dpT are measured for prompt production of the five charmed hadron species in bins of transverse momentum and rapidity in the region 0<pT<8 GeV/c and 2.0<y<4.5. Theoretical predictions are compared to the measured differential cross-sections. The integrated cross-sections of the charm hadrons are computed in the above pT-y range, and their ratios are reported. A combination of the five integrated cross-section measurements gives
σ(cc¯)pT<8 GeV/c,2.0<y<4.5=1419±12(stat)±116(syst)±65(frag) μb,
where the uncertainties are statistical, systematic, and due to the fragmentation functions
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