105,969 research outputs found
Gnomidolon pulchrum Martins 1960
No full textGnomidolon pulchrum Martins, 1960 (Fig. 2) Gnomidolon pulchrum Martins, 1960: 7; Monné, 2005: 313 (cat.). Martins (2006) called attention to the variation in color of G. pulchrum. The typical form, with the apical half of the elytra reddish, occurs in the south-central part of Paraguay (San Pedro, Cordillera) and in northern Argentina. The form with the apical half of the elytra black is recorded for Brazil (Mato Grosso), but also occurs in northern Paraguay (Concepción). The typical form has been illustrated in color by Martins (1967: 210, est. 7, fig. 2; 2006: 169, fig. 183). A female from Bolivia before us agrees with the form that shows the apical half of the elytra black, but the extremities of the elytra have a narrow transverse white stripe (Fig. 2). Structurally, the specimen agrees morphologically with the other forms cited. Specimens examined. BOLIVIA, Santa Cruz: Albanez (40 km S S(santa)C(cruz), “Laspetas”, fêmea, 6.XII. 2011, J. L. Aramayo col. (ACMS).Published as part of Martins, Ubirajara R. & Galileo, Maria Helena M., 2013, New species and records of Cerambycinae and Lamiinae (Coleoptera: Cerambycidae) from the Neotropical Region, pp. 571-580 in Zootaxa 3683 (5) on pages 572-573, DOI: 10.11646/zootaxa.3683.5.5, http://zenodo.org/record/21812
Catalytic activity of Copper(I) and Copper(II) 3,5-dinitro- or 3,5-bis(trifluoromethyl)-pyrazolate derivatives
No full textCatalytic activity of Copper(I) and Copper(II) 3,5-dinitro- or 3,5-bis(trifluoromethyl)-pyrazolate derivatives.
Rossana Galassi,a Oumarou Camille Simon,a* Claudia Graiff,b M. Fátima C. Guedes da Silva,c Nuno M. R. Martins,c Luísa M. D. R. S. Martins,c,d Armando J. L. Pombeiroc
a School of Science and Technology, Via S. Agostino 1, 62032 Camerino (MC), Italy, *[email protected]
b Dipartimento di Chimica, Parco Area delle Scienze 17/A, Parma, Italy
c Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, Universidade de Lisboa, Portugal.
d Chemical Engineering Departament, Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, Portugal.
The reaction of [μ-N,N-Cu-(3,5(CF3)2pz]3 (1) with halide sources led to the formation of Cu(II) hexanuclear derivatives such as [(Cu((CF3)2pz)6(OH)6) X][Bu4N] (2a)(Cl-), (2b) (Br-), (2c) (I-), (2d) (NO2-).[1] If the reaction occurs in the same conditions but without halides, a highly hydrated hexanuclear metallocycle [(Cu((CF3)2pz)6(OH)6) (H2O)n], (3), was isolated, ruling out the template action of the anions. By replacing the CF3 groups with NO2 groups in the pyrazole, neither the trinuclear nor the hexanuclear copper derivatives were obtained, and the dinuclear [Cu-(3,5-(NO2)2pz)(PPh3)]2 compound, (4), was the only Cu(I) derivative isolated in good yield. Even though CF3 and NO2 are both withdrawing groups, a pronounced different chemical behavior was already revealed in the case of similar pyrazolate silver(I) derivatives.[2] All compounds were characterized by elemental analysis, NMR, IR spectroscopy and ESI-MS spectrometry. In the case of compound 4 its crystal structure has been determined by X Ray diffraction analysis, evidencing its dinuclear nature, build up by two bridging ligands which coordinate two copper atoms through nitrogen donors, forming a six member ring with boat conformation. Compounds (3) and (4) act as catalysts towards the microwave (MW) assisted peroxidative oxidation of cyclohexane to cyclohexanol and cyclohexanone under mild conditions, which is of industrial significance for the synthesis of Nylon-6,6. High yield (up to 51% of oxygenated products) is obtained after 2h of MW irradiation, using a maximum of 0.2% molar ratio of 3 (the best catalyst) relatively to the substrate in the presence of TEMPO. The efficiency of the catalytic systems as well as the influence of various parameters, such as the reaction time, amount of catalyst, temperature and presence of different additives, are discussed. The work was partially supported by the Fundação para a Ciência e a Tecnologia (project UID/QUI/00100/2013)
[ ] Galassi, R.; Burini, A.; Ahmed, A. M. Eur. J. Inorg. Chem. 2012, 3257.
[2] Galassi, R.; Ricci, S., Burini, A., Macchioni A., Rocchiggiani, L., Marmottini, F., Tekarli, S. M., Nesterov, V. N. Omary M. A. Inorg. Chem., 2013, 52, 14124
Cearagrylloides microcephalus Martins-Neto, n. comb.
No full textCearagrylloides microcephalus Martins-Neto, n. comb. (Figs. 2 B, E, G) 1. Cearagryllus microcephalus Martins-Neto, 1991. Specimens included. GP/ 1 T- 1680 (holotype), RGMN- 203, CV- 1699, and RGMN- 40 (510) New supplementary material. RGMN- 508. Emended diagnosis. Females with robust body, varying from 24 to 26 mm length; fore wing length varying from 24 to 28 mm; ovipositor length around 38 mm. Ovipositor 1.6 times longer than the body and/or the fore wing length. Head notably small, laterally elongated. ScP straight, not thickened; R parallel to ScP. MP unbranched; around six MP 2 secondary branches. r-m indistinct. Discussion. The specimen CV- 1699, with incompletely preserved ovipositor, was initially interpreted as belonging to the species Cearagryllus perforatorius (Martins-Neto, 1991), based just on the body and wing length. However, after re-examination of the venation of this specimen, it is now possible to verify that it belongs to Cearagrylloides microcephalus. In addition to the original characters assigned to the species (smaller body and head, longer ovipositor), the fore wing provided other important characters. In C. perforatorius ScP is sigmoid, distally divergent and basally thickened, in contrast to C. microcephalus, which exhibits a straight ScP, not thickened. Additionally, MA has typically three anterior secondary branches, not present in C. microcephalus. Another minor difference is a smaller number of MP secondary branches.Published as part of Martins-Neto, Rafael Gioia & Tassi, Lara Vaz, 2009, The Orthoptera (Ensifera) from the Santana formation (Early Cretaceous, Northeast Brazil): A statistical and paleoecological approach, with description of new taxa, pp. 21-37 in Zootaxa 2080 on page 28, DOI: 10.5281/zenodo.18734
Taiophlebia ferreirai Martins-Neto & Gallego & Brauckmann & Cruz 2007, comb. n.
No full textTaiophlebia ferreirai (Pinto, 1994), comb. n. Archaemegaptilus ferreirai Pinto, 1994: 107–108, fig. 1 (holotype BA-PB-638, studied). Remarks: A. ferreirai from the Upper Carboniferous (Piedra Shotle Formation, Chubut) of Argentina, was originally attributed to the palaeodictyopterans but clearly exhibits characters typical for Taiophlebia, and can be therefore transferred to the latter genus.Published as part of Martins-Neto, R. G., Gallego, O. F., Brauckmann, C. & Cruz, J. L., 2007, A review of the South American Palaeozoic entomofauna Part I: the Ischnoneuroidea and Cacurgoidea, with description of new taxa, pp. 87-101 in African Invertebrates 48 (1) on page 98, DOI: 10.5281/zenodo.766762
Cotycicuiara multicava Martins & Galileo 2010, new species
No full textCotycicuiara multicava, new species (Figure 2) Description. Integument blackish-red. Frons covered by whitish pubescence which completely borders eyes. Vertex with sparse pubescence. Upper ocular lobes separated by half width of one lobe. Antennae reddish. Scape cylindrical, scarcely shorter than antennomere III. Flagellomeres not fimbriate ventrally. Prothorax covered with sparse whitish-yellow pubescence. Pronotum with a transverse row of punctures on posterior constriction. Scutellum sparsely covered by brownish pubescence. Humeri slightly projecting. Elytra with basal quarter covered by brownish-yellow pubescence; large transverse area of whitish pubescence on anterior part of elytra with slightly oblique anterior margin and posterior margin projecting along suture; large and deep, contrasting, dark punctures, intercalate with whitish pubescence; a wide irregular transverse band of brownish-yellow pubescence behind middle; preapical area of white pubescence and elliptical spots of brownish-yellow pubescence. Elytral apices covered by brownishyellow pubescence. Legs and ventral surface covered by whitish pubescence. Measurements (mm), male/female respectively. Total length, 8.3-12.5/9.7-11.8; prothorax length, 1.6- 2.0/1.8-2.3; prothorax width, 2.2-2.8/2.6-3.4; elytral length, 6.2-7.6/6.9-8.5; humeral width, 3.1-3.9/3.6- 4.6. Type material. Female holotype, BRAZIL, Minas Gerais: Lavras, 29.II.1988, R. C. Garcia col. (MZSP). Paratypes, same data as holotype: female, 19.II.1987 (MZSP); male, 20.X.1987 (MCNZ); male, 9.XI.1987 (MZSP); male, 14.I.1988 (MZSP); male, 15.III.1988 (MZSP); male, 26.I.1988 (MZSP); male, 16.XI.1988 (MZSP). Etymology. Latin, multicava = porous, referring to the densely punctate elytra.Published as part of Martins, Ubirajara R. & Galileo, Maria Helena M., 2010, New species of the genus Cotycicuiara Galileo and Martins, 2008 (Cerambycidae, Lamiinae, Desmiphorini), pp. 1-6 in Insecta Mundi 2010 (134) on page 2, DOI: 10.5281/zenodo.516480
Podocinum tupinamba Santos, Martins, Britto & Moraes 2017
No full text38. Podocinum tupinamba Santos, Martins, Britto & Moraes, 2017 Podocinum tupinamba Santos, Martins, Britto & Moraes, 2017: 453. Type depository. Departamento de Entomologia e Acarologia, Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo, Piracicaba, Brazil. Type locality and habitat. Brazil, Leme, São Paulo state, 07 February 2000, in litter.Published as part of Barros, Avyla R. A., Castilho, Raphael C. & De Moraes, Gilberto J., 2020, Catalogue of the mite family Podocinidae Berlese (Acari: Mesostigmata), pp. 141-156 in Zootaxa 4802 (1) on page 153, DOI: 10.11646/zootaxa.4802.1.9, http://zenodo.org/record/390496
Cycnidolon praecipuum Martins & Galileo, 2013, sp. nov.
No full textCycnidolon praecipuum sp. nov. (Fig. 3) Head black. Frons and vertex with silky, white pubescence. Eyes not divided. Antennae (female) almost reaching the apices of the elytra. Scape reddish-brown with blackened tip. Antennomeres III-X black with orange in basal third. Prothorax black. Pronotum with a gibbosity on each side near the anterior third; pubescence white, sparse, most evident before gibbosities and on sides of the base; remainder of the surface practically glabrous. Lateral parts of prothorax glabrous. Prosternum orange with pubescence sparse, in shape of a “V” in basal half. Elytra black; yellow fascia, in shape of an inverted “V,” extending from the scutellum to the anterior third, with a small groove on the posterior edge of the fascia, close to the suture. Apical half covered by silky white pubescence, irregular and more concentrated anteriorly. Elytral punctation sparse, the apices oblique with a small spicule at outer margin. Profemora orange with apical third darkened. Meso- and metafemora with peduncle yellow, clubs black. Tibia basally black then orange toward the apices. Tarsi and Thoracic sterna red. Urosternites black. Measurements, in mm, holotype female. Total length, 6.9; prothorax length, 1.5, greatest width of prothorax, 1.1; elytron length, 4.5; humeral width, 1.4. Type material. Holotype female, BOLIVIA, Santa Cruz: Florida (4 km N Bermejo, Refugio los Volcanes, 18 º06’S, 63 º 36 ’W, 1000–1200 m), 25–29.X. 2011, Wappes & Skillman col. (MNKM). Etymology. Latin, praecipuum = particular, singular; alluding to the appearance of the species. Discussion. Cycnidolon praecipuum sp. nov. resembles C. clarkei Martins & Galileo, 2007, both key to couplet 4 in the key for South American species in Martins (2007), but is separated (comparison between females) by: the black head; flagellomeres bicolored, orange and black; pronotum with two gibbosities and pubescence sparse; humeri black; and apical half of the elytra sparsely pubescent. In C. clarkei: the head is red; flagellomeres are unicolorous, orange; pronotum densely pubescent with a small glabrous gibbosity; apical half of elytra densely pubescent.Published as part of Martins, Ubirajara R. & Galileo, Maria Helena M., 2013, New species and records of Cerambycinae and Lamiinae (Coleoptera: Cerambycidae) from the Neotropical Region, pp. 571-580 in Zootaxa 3683 (5) on page 573, DOI: 10.11646/zootaxa.3683.5.5, http://zenodo.org/record/21812
Hypostomus careopinnatus Martins, Marinho, Langeani & Serra 2012
No full textHypostomus careopinnatus Martins, Marinho, Langeani & Serra, 2012: 495, fig. 1. Paratypes: 1 lot, 5 specimens — NUP 11257, 5, 30.2–53.8 mm SL: Brazil, Mato Grosso, Alto Araguaia, tributary of rio Ariranha, rio Taquari drainage, upper rio Paraguai basin, 17°18’37”S, 53°32’22”W, F. Langeani, J.P. Serra, M.M.F. Marinho, F.O. Martins, 3 June 2010.Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 20, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/647949
"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.
New species of the genus Cotycicuiara Galileo and Martins, 2008 (Cerambycidae, Lamiinae, Desmiphorini)
No full textFive new species of the genus Cotycicuiara Galileo and Martins are described and illustrated: C. oicepe sp. nov., from Trinidad and Tobago; and from Brazil C. multicava sp. nov., (Minas Gerais); C. pertusa sp. nov., (Rio de Janeiro, Santa Catarina); C. nivaria sp. nov., (Minas Gerais, Espírito Santo); C. chionea sp. nov., (Rio de Janeiro). A revised key to species is provided.Novas espécies do gênero Cotycicuiara Galileo e Martins, 2008 (Cerambycidae, Lamiinae, Desmiphorini). Espécies novas descritas e ilustradas: de Trinidad and Tobago, Cotycicuiara oicepe sp. nov.; do Brasil, C. multicava sp. nov., (Minas Gerais); C. pertusa sp. nov., (Rio de Janeiro, Santa Catarina); C. nivaria sp. nov., (Minas Gerais, Espírito Santo); C. chionea sp. nov., (Rio de Janeiro). Apresenta-se chave para as espécies
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