53,403 research outputs found
Description of a new genus and species of Chrysopetalidae (Annelida: Polychaeta) from the NE Atlantic, with some further records of related species
No full textRavara, Ascensão, Aguado, M. Teresa, Rodrigues, Clara F., Génio, Luciana, Cunha, Marina R. (2019): Description of a new genus and species of Chrysopetalidae (Annelida: Polychaeta) from the NE Atlantic, with some further records of related species. European Journal of Taxonomy 539: 1-21, DOI: https://doi.org/10.5852/ejt.2019.53
Effective gravitational equations for f(R) braneworld models
No full textThe viability of achieving gravitational consistent braneworld models in the framework of a f(R) theory of gravity is investigated. After a careful generalization of the usual junction conditions encompassing the embedding of the 3-brane into a f(R) bulk, we provide a prescription giving the necessary constraints in order to implement the projected second-order effective field equations on the brane. © 2013 American Physical Society.Instituto de Física Universidade Federal Fluminense, Avenue Gal. Milton Tavares de Souza, s/n, CEP 24210-346 Niterói-Rio de JaneiroUNESP-Campus de Guaratinguetá-DFQ, Avenue Dr. Ariberto Pereira da Cunha, 333 CEP 12516-410 Guaratinguetá-Sao PauloUNESP-Campus de Guaratinguetá-DFQ, Avenue Dr. Ariberto Pereira da Cunha, 333 CEP 12516-410 Guaratinguetá-Sao Paul
Thyasiroidea (Mollusca: Bivalvia) from the mud volcanoes of the Gulf of Cadiz (NE Atlantic)
No full textRodrigues, Clara F., Oliver, Graham, Cunha, Marina R. (2008): Thyasiroidea (Mollusca: Bivalvia) from the mud volcanoes of the Gulf of Cadiz (NE Atlantic). Zootaxa 1752: 41-56, DOI: 10.5281/zenodo.27424
Letter from Carl Hayden to F. R. Goodman, County Engineer
No full textLetter from Carl Hayden to F. R. Goodman regarding the construction of new roads
Letter from Carl Hayden to F. R. Goodman
No full textLetter from Carl T. Hayden to F. R. Goodman concerning the purchase of Bright Angel Trail and construction of an approach road to the park
Letter from F. R. Goodman to Carl Hayden
No full textLetter from F. R. Goodman to Carl T. Hayden asking for clarification about the agreement to construct an approach road to the par
Erratum to: Effect of moderate red wine intake on cardiac prognosis after recent acute myocardial infarction of subjects with Type 2 diabetes mellitus (Diabetic Medicine, (2006), 23, 9, (974-981), 10.1111/j.1464-5491.2006.01886.x)
No full textIn an article by Marfella et al, the author name C. Saron is incorrect and should be listed as C. Sardu. Therefore the correct author list is: R. Marfella, F. Cacciapuoti, M. Siniscalchi, F. C. Sasso, F. Marchese, F. Cinone, E. Musacchio, M. A. Marfella, L. Ruggiero, G. Chiorazzo, D. Liberti, G. Chiorazzo, G. F. Nicoletti, C. Sardu, F. D'Andrea, C. Ammendola, M. Verza and L. Coppola.In an article by Marfella et al, the author name C. Saron is incorrect and should be listed as C. Sardu. Therefore the correct author list is: R. Marfella, F. Cacciapuoti, M. Siniscalchi, F. C. Sasso, F. Marchese, F. Cinone, E. Musacchio, M. A. Marfella, L. Ruggiero, G. Chiorazzo, D. Liberti, G. Chiorazzo, G. F. Nicoletti, C. Sardu, F. D'Andrea, C. Ammendola, M. Verza and L. Coppola
Rapturella atlas Cunha & Simone 2018, n. sp.
No full textRapturella atlas n. sp. (Figure 1) Type material. Holotype MZSP 91018 (Fig. 1 A–B). Paratypes: BRAZIL, Rio de Janeiro state, Cape São Tomé, 21°58.32' S 40°02.05' W, 155 m, MZSP 107499, 1 shell (18.vi.2005); São Paulo state, São Sebastião, 24°44'69" S 44°44'965" W, 153 m, MZSP 107496 (Fig. 1 C–F), 1 shell, MZSP 107497, 1 shell, MNHN 25271, 2 shells, MNRJ 30855, 2 shells; 24°42.8' S 44°42.9' W, 162 m, MZSP 107498, 2 shells (20.xi.1997); 25°14.4' S 45°03.1' W, 147 m, MZSP 107500, 4 shells (21.xi.1997). Type locality. BRAZIL: Rio de Janeiro, off Cape São Tomé, 22°00.708' S 40°03.380' W, 162 m (Project Frade Development, sta BC_A_E39_1, C.H. Caetano coll., 29.vi.2005). Etymology. In honors of Atlas, the nick name of Frank Fontaine, the character of the science-fiction video game series BioShock: an allusion to the hidden identity of the species. The noun in apposition. Diagnosis. Small shell with walls strongly thickened. Umbilicus deep and narrow. Spiral grooves on teleoconch separated by regularly spaced intervals, each interval about 10 times wider than the grooves; last whorl has about 11 spiral grooves, but no subsutural grooves. Palatal region has no thickened area. Description. Shell oval, profile rounded, maximum length (L) 3.1 mm; about 1.3 times longer than wide. Walls thickened. Color white; spire short, length about 1/4 of total length (Fig. 1A, B). Protoconch small, glossy, 1 whorl; width about 0.4 mm; separated from teleoconch by narrow orthocline furrow (Fig. 1F: arrows). Teleoconch up to 4 whorls, each whorl convex (Fig. 1C). Surface smooth, glossy, sculptured with narrow punctuated spiral grooves distributed on entire teleoconch; punctuations very small, oval (Fig. 1D); grooves regularly spaced, separated by gaps about 10 times wider than grooves; last whorl with about 11 spiral grooves, gradually becoming deeper and closer to each other towards umbilical area; 3 grooves on anterior half and 8 on posterior half; umbilicus rimate, partially covered by extension of columellar margin. Aperture about 2/3 of total length, antero-posteriorly elongated, length about 1.5 times width; posterior end pointed, anterior (siphonal) rounded. Inner lip concave; superior half convex, rounded, with thin callus, about 1.3 times length of inferior half; inferior half slightly concave, with shallow edge, and small thickened columellar fold in posterior region. Outer lip thick, with sharp edge. Measurements (length by width in mm). Holotype: 2.8 by 1.6 (Fig. 1 A–B). Paratypes: MZSP 107496 (Fig. 1 C–F), 1 shell, 3.1 by 2.2; MZSP 107497, 1 shell, 2.6 by 1.7; MZSP 107498, 1 shell, 2.7 by 1.8; MZSP 107500, 3 shells, (#1) 2.3 by 1.5, (#2) 1.7 by 1.3, (#3) 2.3 by 1.6; MZSP 138843, 1 shell, 2.7 by 1.8; MNHN 25271, 2 shells, (#1), 2.0 by 1.4, (#2) 2.5 by 1.7; MNRJ 30855, 2 shells, (#1) 1.8 by 1.3; (#2) 2.5 by 1.7; MZSP 90698, 1 shell, 3.3 by 2.2; MZSP 91018, 1 shell, 2.6 by 1.7. Distribution. Rio de Janeiro to São Paulo, Brazil. Habitat. Muddy sand bottom, 147–162 m depth. Material Examined. Types. Remarks. Rapturella atlas n. sp. fits in the genus Rapturella because it presents most of the diagnostic features of the genus including a minute shell size with thick walls, rounded spire whorls with a subsutural shelf, a teleoconch sculptured by spiral grooves composed of rounded punctae, and the characteristic aperture with a rounded trapezoidal shape, a columellar region thickened with a weak fold, a narrow anal canal, and a rounded siphonal canal region. Rapturella atlas n. sp. most resembles R. ryani, from the Florida Keys, USA. It differs by having a smaller size (length up to 2.5 mm, while R. ryani easily reaches 4 mm); thicker walls forming a more solid shell; 3 spiral grooves on the penultimate whorl (5 more closely spaced grooves on R. ryani), about 3 grooves in the periumbilical region (about 10 more closely spaced grooves on R. ryani), and a smaller protoconch (0.42 mm, against 0.47 mm of R. ryani). Despite it being a smaller species, the smaller protoconch of R. atlas is a relevant developmental parameter. Rapturella atlas n. sp. differs from R. globulina (Forbes, 1884), from the Eastern Atlantic (Salvador & Cunha, 2016), by its slightly rounded whorls forming a straighter profile (whorls of R. globulina are more rounded), the small subsutural shoulder on each whorl (absent on R. globulina), and by the more widely spaced spiral grooves on its shell surface. Additionally, R. atlas n. sp. differs from its congeners in lacking two closely spaced, punctate, subsutural grooves (Salvador & Cunha 2016: fig. 4C, F), and in lacking a faint tooth-like thickening on the palatal region. This discovery expands the geographic distribution of the genus Rapturella southwards to the southwest Atlantic region off the Brazilian coast. However, the distribution of the genus remains restricted, like that of the genera Callostracon Repetto & Bianco, 2012 and Mysouffa Marcus, 1974, to the Atlantic and Mediterranean. This conforms to the heterogenic distribution of acteonids, with most genera confined to specific regions such as the subarctic (e.g. Neactaeonina Thiele, 1912), the Pacific (e.g. Pseudactaeon Thiele, 1925 and Maxacteon Rudman, 1971) or the Western Atlantic (e.g. Ovulactaeon Dall, 1889). Only the genus Acteon has a more widespread range, but, with species of such diverse shell shapes (e.g. Rudman 1971; Marcus 1974; Valdés 2008), further taxonomic investigation may result in its segregation into more genera. The new species, as well as the genus Rapturella, are recognized only by a combination of few conchological characters. The lack of soft tissue samples inhibits any comparative morphological evaluations or molecular analyses. Thus, the putative relationships of the genus with other acteonids and the classification of the species, which we here assign to Rapturella, need to be tested once new quality samples become available.Published as part of Cunha, Carlo M. & Simone, Luiz Ricardo L., 2018, A new species of the genus Rapturella (Gastropoda: Acteonidae) from southeast Brazil, pp. 125-128 in Zootaxa 4521 (1) on pages 125-126, DOI: 10.11646/zootaxa.4521.1.7, http://zenodo.org/record/260972
Heteromesus calcar Cunha & Wilson 2006, sp. nov
No full textHeteromesus calcar sp. nov (Figs 2–6) Etymology Calcar means spur, and is used as a noun in apposition. Material examined Holotype: female (3.7 mm), North Atlantic, MidAtlantic Ridge, Lucky Strike, 37º17.4'N, 32º16.6'W, 10 Aug 2000, R / V Prof Logachev, TTR10 stn AT265GR, 1685 m (ZMUC CRU9878). Paratypes: male (3.2 mm), same data as holotype (ZMUC CRU9879); 1 male (3.0 mm) same data as holotype, (dissected, mouthparts on slide AM P 72117); 3 females, 1 male, 1 intersex, 2 fragments (heads), same data as holotype (AM P 72118). Other material: 1 female, same locality as holotype, 37º17.5'N, 32º16.9'W, 11 Aug 2000, R / V Prof Logachev, TTR10 stn AT271GR, 1712 m (DBUA 786.01); 2 females, 1 manca, same locality as holotype, 37º17.4'N, 32º16.6'W, 11 Aug 2000, R / V Prof Logachev, TTR10 stn AT273GR, 1675 m (DBUA 786.02). Diagnosis Pereonites 1–3 with anterolateral spines. Pereonite 2 in female with no paired dorsal spines or tubercles. Pereonite 5 in female length 2.0 width, in male 6.3 width. Antennula with 3 articles altogether. Pereopods IV–V bases with pedestal spines; ischia with elongate pedestal spines. Description Body length in female 3.7 mm; granular. Head in female length 0.95 width; dorsal surface with pair of cephalic bullae; lobe on ventrolateral margin present in lateral view; dorsal cuticle tubercular granulation. Pereonite 1 in female width 0.2 total body length; with median tubercle, 1 pair of anterolateral simple spines, 1 pair of lateral simple spines. Pereonite 2 in female with median tubercle, 1 pair of anterolateral simple spines, 1 pair of lateral spines. Pereonite 3 in female with median tubercle, 1 pair of anterolateral simple spines. Female pereonites 1–3 anterolateral simple spines stout to long decreasing in length from pereonite 1 to 3, anterolateral spines length distinctly less than length of pereonite 1, lateral simple spines short. Pereonite 4 in female length 0.65 width. Pereonite 5 in female length 0.25 total body length. Pleotelson in female length 1.35 width; terminal margin without distal tubercles (only in male). Antennula with 3 articles altogether; article 2 length in female 0.65 head width, with 4 elongate stiff ventromedial setae, distal tip produced distally beyond insertion of next article, distal article inserting subapically; article 3 terminal, squat, wider than long. Antenna in female length 2.7 anterior body length; article 2 with 1 ventromedial pedestal spine; article 3 length 0.28 anterior body length, length 2.6 width, with distomedial and distolateral pedestal spines and 1 dorsal pedestal spine placed midlength; article 5 length 0.15 anterior body length; article 6 length 0.31 anterior body length; flagellum with 15 articles, flagellum length 0.37 total antenna length. Labrum knobs low. Maxilliped palp article 2 wider than 3. Pereopod bases proximal shoulder with simple spines only. Pereopod I merus dorsal margin with 2 distinctly robust setae, placed distally; carpus palm length near proximal region length, with 1 robust seta on palm distal to elongate seta; propodus ventral margin with 2 robust setae. Pedestal spines only on dorsal margin of bases and ischia of pereopods IV and V, 1–2 long pedestal spines topped by long robust seta on basis and 1 pedestal spine on ischium. Uropods in female extending near posterior margin of pleotelson; length 0.25 length of pleotelson. Male specific characters. Body length 3.2 mm. Head length 1.0 width; with 4 tubercles. Pereonite 1 width 0.20 total body length; with 1 pair of anterolateral simple spines, 1 pair of lateral simple spines. Pereonite 2 with median tubercle, 1 pair of anterolateral simple spines, 1 pair of lateral spines. Pereonite 3 with median tubercle, 1 pair of anterolateral simple spines. Pereonite 4 with 1 pair of dorsal tubercles. Pereonite 1–3 anterolateral simple spines stout to long decreasing in length from pereonite 1 to 3, lateral simple spines short. Pereonite 4 length 0.75 width. Pereonite 5 length 0.40 total body length. Pleotelson length 1.25 width; terminal margin with 1 pair of distal tubercles. Antennula article 2 length 0.47 head width. Antenna length 2.0 anterior body length; article 3 length 0.40 anterior body length, length 4.5 width, with distomedial and distolateral pedestal spines and 1 dorsal pedestal spine placed midlength; article 5 length 0.27 anterior body length; article 6 length 0.47 anterior body length; flagellum length 0.32 total antennal length, flagellum with 15 articles. Pleopod I distal tip with lateral horns. Pleopod II protopod apex rounded, stylet tapering and pointed, not heavily calcified, extending beyond distal margin of protopod. Uropods length 0.35 length of pleotelson. Distribution North Atlantic: MidAtlantic Ridge, Lucky Strike hydrothermal field, 1675–1712 m, on hydrothermal sulphide deposits, sulphide rubble and volcanic rocks, close to active hydrothermal chimneys, known only from type locality. Remarks Heteromesus calcar sp. nov. is similar to H. frigidus, H. granulatus, H. inaffectus and H. schmidti in having altogether 3 antennular articles, and by the tubercular granulation and inconspicuous ornamentation (few spines) of the body. It differs from these species in having anterolateral spines on pereonites 1–3. The most distinctive feature is the presence of long pedestal spines only on dorsal margin of the basis and ischium of pereopods IV and V (also seen in H. spinosus and H. ctenobasius).Published as part of Cunha, Marina R. & Wilson, George D. F., 2006, The North Atlantic genus Heteromesus (Crustacea: Isopoda: Asellota: Ischnomesidae), pp. 1-76 in Zootaxa 1192 (1192) on pages 15-2
F. R. Leavis: The Creative University
No full textThis is a critical introduction to the educational thought of F. R. Leavis (1895-1978), the greatest English literary critic of the twentieth century, providing the first in-depth examination of Leavis's ideas in relation to contemporary mass higher education. During the course of a long, prolific and controversial academic career, which saw him take issue with figures such as Wittgenstein, T. S. Eliot and C. P. Snow, Leavis became one of the most articulate advocates for the idea of the university as 'a centre of consciousness and human responsibility' in the face of what he saw as the relentless technological drive of civilisation. With the journal Scrutiny which he co-founded, as well as his critical writings, Leavis became a decisive influence on generations of teachers in Britain and overseas. Widely misrepresented as narrowly elitist, his ideas about 'the creative university', with their radical, student-centred approach to teaching, constitute a powerful resource for a higher education system grappling with the contradictory demands of continuity and change. Based on original research, the study provides an overview of Leavis's life, work and heritage and his educational world view, and a comprehensive exploration of Leavis's pedagogy from theoretical and practical perspectives. It also includes a first-hand account by the author of being taught by Leavis in person
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