114,132 research outputs found
Sporobolus nesiotioides Longhi-Wagner, R. J. V. Alves & Nilber 2013, sp. nov.
No full textSporobolus nesiotioides Longhi-Wagner, R.J.V. Alves & Nílber sp. nov., Fig. 1–4. Type:— BRAZIL, Trindade Island, South Atlantic, 380 m elevation, 20 o 30’ 05.92” S, 29 o 20’ 10.17” W, 28 February 2012, R. J. V . Alves 8831 & N. G . Silva (holotype R!, isotype ICN!). Sporobolus nesiotioides S. duro affinis, sed differt precipue amplitudine magna, paniculis patentioribus et laminis foliorum filiformibus longioribus angustioribus. Sporobolus nesiotioides is close to S. durus from which it differs mainly by the taller habit, the more lax panicle, and by the filiform leaf blades, longer and narrower than in S. durus. Caespitose perennial herb, 70–90 cm tall (Figs. 1, 3), with a short rhizome. Leaf sheaths glabrous, 3–5 mm wide, conspicuously wider than the leaf blades; ligule 0.2–0.3 mm long, membranous-ciliate, truncate; leaf blades 30–60 cm × 1.2–1.5 mm, conduplicate or convolute, 0.3–0.6 mm in diameter, long-acuminate, adaxial surface scabrid, margins densely scabrid, apex of the leaf-sheath with a tuft of trichomes 4–5 mm long. Peduncle to 80 cm long. Panicle open to lax (Fig. 2), 5.5–17 cm long, primary branches verticillate, less often subverticillate, spikelets clustered mainly at the upper two thirds of the primary branches; rhachis and peduncle glabrous. Spikelets pedicelled, 3–3.5 mm long, with one anthecium, laterally compressed; glumes unequal, acute, membranous, initially persistent in the inflorescence, deciduous at maturity, dehiscing after the anthecium; lower glume nerveless, membranous, 1.3–1.5(–2) mm long, about half the length of the upper glume; upper glume 1-nerved, 3–3.5 mm long, reaching the anthecium; lemma 2.8–3.2 mm long, 1-nerved, acute; palea 2.7–3 mm long, 1-nerved, obtuse. Stamens 1–2. Caryopsis elliptic, 1–1.3 × 0.6 mm. Leaf anatomy:—Transverse section of lamina c-shaped (convolute), 7-nerved. The leaf blades present a typical Kranz anatomy of the C 4 PCK type (sensu Hattersley 1986) and XyMS+, with cells between the metaxylem elements and adjacent chlorenchymatous tissue, according to Hattersley & Watson (1976). Adaxial surface with ribs and furrows; furrows about ½ as deep as the leaf thickness; epidermis unistratified; vascular bundles in the median layer of the blade; primary vascular bundles rectangular, secondary vascular bundles elliptic, with a double sheath; outer Kranz parenchyma sheath with large and thin walled cells, with specialized chloroplasts of centripetal location, suggesting that it belongs to the NAD-ME biochemical subtype according to Hattersley (1986) and Peterson & Herrera-Arrieta (2001); outer Kranz sheath interrupted by sclerenchyma girders toward both surfaces; inner sheath with small and thick walled cells, entire; tertiary vascular bundles round, the outer sheath entire, not interrupted, the inner sometimes inconspicuous. Chlorenchyma cells surround the vascular bundles and are continuous between the bundles, in a loose arrangement. Bulliform cells in small groups, generally 3, in adaxial furrows and between the tertiary vascular bundles (Fig. 4). The leaf anatomy of S. durus was analyzed using leaves received from K and P Herbaria, from collections made in 1829 and 1889, respectively. Even though this analysis was difficult due to the age of the material, it is possible to confirm that S. durus presents a leaf anatomy comparable to S. nesiotioides: both species present a unistratified epidermis on both faces, covered by a thickened cuticle. They differ mainly by S. durus having a larger quantity of sclerenchyma, so its leaves are more rigid than in S. nesiotioides. Sclerenchymatic bundles associated with the minor veins, just below the epidermis, in both faces of the leaf, are copious in S. durus and do not occur in S. nesiotioides. The major veins bear a sclerenchyma sheath which has lateral projections on both faces, which is more expressive in S. durus. Both species share Kranz anatomy, with S. nesiotioides displaying a centripetal chloroplast arrangement. In S. durus we observed chloroplasts in several positions but this may be due to the age of the material. Distribution and habitat:— Sporobolus nesiotioides is known only from Trindade Island, South Atlantic (Brazil) where it forms a contiguous herbaceous cover of dense and uniform tussocks (Fig. 3) on flat volcanic tuff summits from 300 to 500 m elevation. Photos of Martin Vaz main island, ca. 50 km east of Trindade, taken by the Brazilian ornithologist Dr. Leandro Bugoni, strongly suggest that S. nesiotioides also occurs on the main island of that Archipelago. It was collected fertile for the first time in 2012, probably due to prior overgrazing by feral goats which were eradicated in 2005 (Silva & Alves 2011). Etymology:—“ Nesiotis” has its root in Ancient Greek nisiótis, originally referring to the people of Cephalonia Island. Later, the term came to be used in taxonomy with the meaning of “insular”, in general. Besides the insular habitat, the choice of this name is also related to the fact that S. nesiotioides has been observed by the collectors since 1994 in sterile condition, leading to a historical confusion with Bulbostylis nesiotis (Hemsley 1884: 130) Clarke (1908: 27), a sympatric endemic sedge which is vegetatively quite similar. Therefore the suffix oides, meaning “looking like”. Paratypes:— BRAZIL, Ilha da Trindade, Platô do Desejado, 18 February 2013, R. J. V . Alves 8827 & N. G. Silva (paratype R!, isoparatype RB!). Additional material of S. caespitosus examined :— Ascension Island, August 1886, H. J . Gordon 123 (photo K!). Additional material of S. durus examined :— Ascension Island, 1829, d´Urville 32 (P02307222!, P02649728!, P02649729!, P03652320!); Ascension Island, August 1886, H. J . Gordon no. 125 (photo K!). Additional material of S. virginicus examined :— Brazil, Trindade Island, summit of Pico Desejado, 18 February 2013, R. J. V . Alves 8827 and N. G. Silva (R!).Published as part of Longhi-Wagner, Hilda M., Alves, Ruy J. V., Da Silva, Nílber G. & Guimarães, Alessandra R., 2013, A new species of Sporobolus (Poaceae, Chloridoideae) from Trindade Island, Brazil, with comments on the distribution of the genus in the South Atlantic, pp. 13-21 in Phytotaxa 144 (1) on pages 13-18, DOI: 10.11646/phytotaxa.144.1.2, http://zenodo.org/record/509999
Tonnoira distincta Bravo, Alves & Chagas, sp. nov.
No full textTonnoira distincta Bravo, Alves & Chagas, sp. nov. Figs. 1–10 Type material. BRAZIL, Amazonas, Presidente Figueiredo, Gruta Refúgio do Maragua, 02°03´02.64”S 59 ° 57´47.85 ”W (Alves et al. 2008 presents some comments about this cavern), 01.IV. 2006, Alves, V. col., holotype male (INPA); 36 paratype males, same locality, date, and collector as holotype (INPA, MZUEFS); 29 paratype females, same locality, date and collector as holotype (INPA, MZUEFS); 12 paratype males and 19 paratype females, same locality, and collector as holotype, 09.II. 2006 (INPA, MZUEFS); 6 paratype females, Gruta dos Animais, 02°03´02,64”S 59 ° 57´51.47 ”W, 04.III. 2006, Alves, V. col. (INPA, MZUEFS); 1 paratype male, Gruta dos Lages, 01º 59 ’ 41.3 ”S 60 º01’ 36.5 ”W, 07.V. 2006, Alves, V. col. (INPA). Description. Male. Head (Fig. 1): eyes separated by 0.5 facet diameter (Fig. 1); interocular suture inverted Y shaped (Fig. 1). Antenna: scape cylindrical 2.0X length of pedicel (Fig. 2); pedicel spherical (Fig. 2); flagellum with 14 flagellomeres; all flagellomeres cylindrical (Figs. 2, 3); first flagellomere 1.2 X length of second (Fig. 2); apiculus present in flagellomere 14 (Fig. 3); ascoids not visible. Palpus formula = 1.0: 2.6: 2.4: 2.9; last palpomere striated (Fig. 4). Wing (Fig. 5): Sc short; base of R 2 + 3 not attached to R 4; radial fork basal; and medial fork complete; R 5 ending at wing apex. Male terminalia: hypandrium narrow dorsally with median projection, and ventrally expanded posteriorly with two lateral spines and two arms anteriorly projected (Fig. 6); gonocoxite 0.84 X length of the gonostylus with a tuff of bristles along the interior margin (Fig. 6); gonostyli convergent, with pointed apex (Fig. 6); alveoli present along all of the gonostyle surface; epandrium rectangular with one foramen near the anterior margin. Cercopod 1.1 X length of epandrium, slightly curved (Fig. 8), with 2 tenacula, one apical and the other subapical (Fig. 9); sternite 10 smaller than tergite 10 (Fig. 7); aedeagus asymmetrical (Fig. 6); with two asymmetrical parameres reaching the level of the aedeagus apex (Fig. 6); aedeagal apodeme the same length as aedeagus, longer than wide, wider anteriorly than posteriorly; gonocoxal apodeme not fused at midline (Fig. 6). Female (Fig. 10). Similar to male except as follows: apical lobes of subgenital plate of female small, rounded at apex, and separated by a shallow concavity. Cerci blade-like, 2.7 X the total length of genital plate from the anterior border at middle to the lobe apices (distance d). Genital complex as illustrated.Published as part of Bravo, Freddy, Chagas, Cinthia & Alves, Veracilda Ribeiro, 2008, Description of two new species of Tonnoira Enderlein from caves in the Brazilian Amazon and comments about the taxonomic status of Tonnoira plumaria Quate (Diptera, Psychodidae, Psychodinae), pp. 63-68 in Zootaxa 1916 on page 65, DOI: 10.5281/zenodo.18461
Observations of Bºs→ψ(2S)η and Bº(s)→ψ(2S)π+π- decays
No full textFirst observations of the B0s
→ψ(2S)η, B0 →ψ(2S)π
+
π
− and B0s
→ψ(2S)π
+
π
− decays are made
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
√
s = 7 TeV. The ratios of the branching fractions
of each of the ψ(2S) modes with respect to the corresponding J/ψ decays are
B(B0s
→ψ(2S)η)
÷
B(B0s
→J/ψη)
= 0.83± 0.14 (stat)±0.12 (syst) ±0.02 (B),
;
B(B0→ψ(2S)π
+
π
−
)
÷
B(B0→J/ψπ
+
π
−
)
= 0.56± 0.07 (stat)±0.05 (syst)± 0.01 (B),
;
B(B0s
→ψ(2S)π
+
π
−
)
÷
B(B0s
→J/ψπ
+
π
−
)
= 0.34± 0.04 (stat)±0.03 (syst)± 0.01 (B),
where the third uncertainty corresponds to the uncertainties of the dilepton branching fractions of the J/ψ
and ψ(2S) meson decays
Model based defect characterization in composites
No full textWork is reported on model-based defect characterization in CFRP composites. The work utilizes computational models of the interaction of NDE probing energy fields (ultrasound and thermography), to determine 1) the measured signal dependence on material and defect properties (forward problem), and 2) an assessment of performance-critical defect properties from analysis of measured NDE signals (inverse problem). Work is reported on model implementation for inspection of CFRP laminates containing multi-ply impact-induced delamination, with application in this paper focusing on ultrasound. A companion paper in these proceedings summarizes corresponding activity in thermography. Inversion of ultrasound data is demonstrated showing the quantitative extraction of damage properties.This proceeding may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.
This proceeding appeared in Roberts, R., and S. Holland. "Model based defect characterization in composites." In AIP Conference Proceedings, vol. 1806, no. 1, p. 090015. AIP Publishing LLC, 2017, and may be found at
DOI: 10.1063/1.4974659.
Copyright 2017 Author(s).
Posted with permission
Precision measurement of the B[0 over s]–[– over B][0 over s] oscillation frequency with the decay B[0 over s]→D[– over s]π[superscript +]
No full textA key ingredient to searches for physics beyond the Standard Model in B[0 over s] mixing phenomena is the measurement of the B[0 over s]–[– over B][0 over s] oscillation frequency, which is equivalent to the mass difference Δm[subscript s] of the B[0 over s] mass eigenstates. Using the world's largest B[0 over s] meson sample accumulated in a dataset, corresponding to an integrated luminosity of 1.0 fb[superscript −1], collected by the LHCb experiment at the CERN LHC in 2011, a measurement of Δm[subscript s] is presented. A total of about 34 000 B[0 over s] → D[− over s]π[superscript +] signal decays are reconstructed, with an average decay time resolution of 44 fs. The oscillation frequency is measured to be Δm[subscript s] = 17.768 ± 0.023 (stat) ± 0.006 (syst) ps[superscript −1], which is the most precise measurement to date.National Science Foundation (U.S.
Tonnoira robusta Bravo, Alves & Chagas, sp. nov.
No full textTonnoira robusta Bravo, Alves & Chagas, sp. nov. Figs. 11–20 Type material. BRAZIL, Amazonas, Presidente Figueiredo, Gruta Refúgio do Maragua, 02°03´02.64”S 59 ° 57´47.85 ”W, 01.IV. 2006, Alves, V. col., holotype male (INPA); 1 paratype male, same locality, date, and collector as holotype (MZUEFS); 2 paratype males, same locality and collector as holotype, 06.V. 2006 (INPA, MZUEFS); 2 paratype males, same locality and collector as holotype, 09.II. 2006 (INPA, MZUEFS); 1 paratype female, same locality and collector as holotype, 09.II. 2006 (INPA). Description. Male. Head (Fig. 11): eyes separated by 0.5 facet diameters (Fig. 11); interocular suture inverted Y shaped (Fig. 11). Antenna: scape cylindrical 1.7 X length of pedicel (Fig. 12); pedicel spherical (Fig. 12); flagellum with 14 flagellomeres; all flagellomeres flask-shaped (Figs. 12, 13); first flagellomere same length as second (Fig. 12); apiculus present in flagellomere 14 (Fig. 13); ascoids not visible. Palpus formula = 1.0: 2.1: 1.9: 2.2; last palpomere striated (Fig. 14). Wing (Fig. 15): Sc short; vein R 2 + 3 obsolete, radial fork free; radial fork basal; medial fork complete; R 5 ending at wing apex. Male terminalia: hypandrium narrow, diademe-like without ventral expansion (Fig. 16); gonocoxite 0.6 X length of the gonostylus (Fig. 16); gonostyli convergent, with base larger than apex (Fig. 16); alveoli present along entire surface (Fig. 16); epandrium rectangular; foramen not observed (Fig. 17); cercopod long, 2.2 X length of epandrium, slightly curved (Fig. 18), with 2 tenacula, one apical and the other subapical (Fig. 19); sternite 10 smaller than tergite 10 (Fig. 17); aedeagus asymmetrical, bipartite with left branch smaller than right, curved, pointed at apex (Fig. 16); right branch of aedeagus with rounded apex (fig. 16); with two asymmetrical parameres ending near the apex of the aedeagus apex (Fig. 16); aedeagal apodeme trapezoidal, 0.75 x length of aedeagus, wider anteriorly than posteriorly (Fig. 16); gonocoxal apodeme not fused at midline (Fig. 16). Female (Fig. 20). Similar to male except as follows: apical lobes of subgenital plate of females long, rounded, and separated by a shallow apical concavity. Cerci blade-like, 2.2 X the total length of genital plate from the anterior border at middle to the lobe apices (distance d). Genital complex small, as illustrated.Published as part of Bravo, Freddy, Chagas, Cinthia & Alves, Veracilda Ribeiro, 2008, Description of two new species of Tonnoira Enderlein from caves in the Brazilian Amazon and comments about the taxonomic status of Tonnoira plumaria Quate (Diptera, Psychodidae, Psychodinae), pp. 63-68 in Zootaxa 1916 on pages 65-67, DOI: 10.5281/zenodo.18461
"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.
Sex change and reproductive output of the protandric shrimp Merguia rhizophorae (Rathbun, 1900) (Decapoda, Merguiidae)
No full textAlves, Douglas Fernandes Rodrigues, Barros-Alves, S. P., Almeida, A. C., Costa, R. C. (2022): Sex change and reproductive output of the protandric shrimp Merguia rhizophorae (Rathbun, 1900) (Decapoda, Merguiidae). Journal of Natural History 55 (41-42): 2673-2690, DOI: 10.1080/00222933.2021.201933
Ophiothrix tommasi Santana & Manso & Almeida & Alves 2020, n. sp.
No full textOphiothrix tommasi n. sp. MZUSP 02617 (01 specimen), Piauí, Brazil, 02º49'S, 38º50'W, 72 m, coll. VIII/65 by Comis. Canopus; MZUSP 01542 (01 specimen), Ceará, Brazil, 02º49'S, 38º50'W, 72 m, coll. VIII/1965 by L. R. Comissão Canopus; MZUSP 02604 (02 specimens), Ceará, Brasil, 04°02'S, 35°84'W, 78 m, coll. 05/ VI/1998; LIMCE 00129 (01 specimen), Natal, Rio Grande do Norte, Brazil, 05°44'S, 35°12'W, coll. 14/ V/2003; MZUSP 01537 (01 specimen), Natal, Rio Grande do Norte, Brazil, 05º45'S, 34º58'W, 95 m, coll. I/1966 by Comissão Canopus; MZUSP 01539 (01 specimen), João Pessoa, Paraíba, Brazil, 07º08'S, 34º26'W, 62 m, coll. XII/1965 by Comissão Canopus; MZUSP 01536 (01 specimen), Fernando de Noronha, Pernambuco, Brazil, 04º02'S, 35º84'W, 78 m, coll. VI/1998 by Revizee N/NE; MZUSP 01538 (01 specimen), Pernambuco, Brazil, 07º50'S, 37º30'W, 67 m, coll. XII/1965 by Comissão Canopus; MZUSP 02609 (04 specimens), Pernambuco, Brazil, 07º08'– 07º50'S, 34º26'– 34º30'W, 62–67 m, coll. XII/1965by Comis. Canopus; MOUFPE-ECH 00086 (02 specimens), Itamaracá, Pernambuco, Brazil, 07°45'S, 34°38'W, coll. S. Souza, 28/XIII/1988; MOUFPE-ECH 00056 (04 specimens), Itamaracá, Pernambuco, Brazil, 07°45'S, 34°38'W, coll. S. Souza, 23/XI/1988; MOUFPE-ECH 00063 (02 specimens), Itamaracá, Pernambuco, Brazil, 07°45'S, 34°38'W, coll. 15/X/1993; MOUFPE-ECH 00070 (02 specimens), Tamandaré, Pernambuco, Brazil, 08°45'S, 35°05'W, coll. 03/ VI/2016; MOUFPE-ECH 00002 (01 specimen), MOUFPE-ECH 00044 (03 speci- mens), MOUFPE-ECH 00049 (01 specimen), Pernambuco, Brazil, 08°43'S, 35°05'W; MZUSP 01534 (01 specimen), Maceió, Alagoas, 09°34'– 09º53'S, 35º36'– 35º49'W, coll. 1966; UFBA 00901 (01 specimen), UFBA 00409 (06 specimens), Salvador, Bahia, Brazil, 12º57'S, 38º21'W, 0 m, coll. VII/2006 by W. Magalhães; MZUSP 02966 (01 specimen), Ilha Trindade, Espírito Santo, Brazil, 20º30'S, 40º18'W, 37 m, coll. V/1987; MZUSP 02967 (05 specimens), Ilha Trindade, Espírito Santo, Brazil, 20º29'S, 29º20'W, 13–15 m, XI/2014 by J.B. Mendonça; MZUSP 2601 (19 specimens), Bacia de Campos, Rio de Janeiro, 21°20'S, 40°35'W, 27 m, coll. 27/VII/1991 by L. R. Tommasi; MZUSP 2613 (01 specimen), Bacia de Campos, Rio de Janeiro, 21°20'S, 40°35'W, 57 m, coll. VII/1991 by L. R. Tommasi; MZUSP 02603 (02 specimens), Bacia de Campos, Rio de Janeiro, Brasil, 23°53'S, 42°28'W, 500 m, coll. 03/IX/1970 by L. R. Tommasi; MZUSP 01532 (01 specimen), MZUSP 01533 (01 specimen), Bacia de Campos, Rio de Janeiro, Brazil, 21°00'– 22º50'S, 40°00'– 41º58'W, 0–16 m, coll. 1957–2010; MZUSP 01540 (01 specimen), MZUSP 01541 (01 specimen), MZUSP 02968 (01 specimen), Búzios, Rio de Janeiro, Brazil, 22º49'S, 41º57'W, 16 m, coll. XI/1957 by L. R. Tommasi; MZUSP 02969 (01 specimen), MZUSP 01530 (01 specimen), MZUSP 01531 (03 specimens), Ubatuba, São Paulo, Brazil, 23º26'– 25º11'S, 44º57'– 45º02'W, coll. VIII/1956 by L. R. Tommasi; MZUSP 01543 (01 specimen), São Sebastião, São Paulo, Brazil, 23º44'S, 45º44'W, coll. IV/2013 by M. Tavares & J. Braga; MZUSP 02598 (01 specimen), Ilha Arvoredo, Santa Catarina, Brazil, 27°18'S; 48°23'W, 7,5 m, coll. 20/X/2004; MZUSP 02970 (01 specimen), Santa Catarina, Brazil, 27º43'S; 48º37'W, coll. 30/X/1959 by Tommasi.Published as part of Santana, Alisson, Manso, Cynthia L. C., Almeida, Ana C. S. & Alves, Orane F. S., 2020, Taxonomic review of Ophiothrix Müller & Troschel, 1840 (Echinodermata Ophiuroidea) from Brazil, with the description of four new species, pp. 51-78 in Zootaxa 4808 (1) on page 77, DOI: 10.11646/zootaxa.4808.1.3, http://zenodo.org/record/392790
Liftings for noncomplete probability spaces
No full textThe current state of knowledge concerning liftings for noncomplete probability spaces is discussed. This is a somewhat expanded version of the author's talk given at the 1991 Summer Conference on General Topology and Applications in Honor of Mary Ellen Rudin and Her Work.PT: S; CR: BURKE MR, IN PRESS P AM MATH S BURKE MR, 1991, ISRAEL J MATH, V73, P33 BURKE MR, 1992, ISRAEL J MATH, V79, P289 CARLSON T, THEOREM LIFTING CHRISTENSEN JPR, 1974, TOPOLOGY BOREL STRUC FREMLIN DH, 1989, HDB BOOLEAN ALGEBRAS, P877 INOESCUTULCEA A, 1966, 5TH P BERK S MATH ST, V2 IONESCUTULCEA A, 1967, CONTRIBUTIONS PROB 1, P63 IONESCUTULCEA A, 1969, TOPICS THEORY LIFTIN JECH TJ, 1978, SET THEORY JOHNSON RA, 1980, P AM MATH SOC, V80, P234 JUST W, IN PRESS T AM MATH S KUPKA J, 1983, INDIANA U MATH J, V32, P717 LOSERT V, 1983, LNM, V1080, P95 MAHARAM D, 1958, P AM MATH SOC, V9, P987 SHELAH S, 1983, ISRAEL J MATH, V45, P90 TALAGRAND M, 1982, P AM MATH SOC, V84, P379 VONNEUMANN J, 1931, CRELLES J MATH, V165, P109; NR: 18; TC: 0; J9: ANN N Y ACAD SCI; PG: 4; GA: BZ86BSource type: Electronic(1
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