41,239 research outputs found
Order-disorder, Polytypes and Twinning in the Crystal Structure of vurroite
No full textVurroite, ideally Pb20Sn2(Bi,As)22S54Cl6, is a complex mineral type, where the two minor chemical components, Sn and Cl, act as essential constituents together with Pb, Bi, As and S 1, 2. X-ray single crystal data on vurroite strongly indicate an orthorhombic Fcentred symmetry 1, 3. In this study the crystal structure of vurroite is interpreted as an OD structure belonging to the category III of OD structures composed of equivalent layers 4. The application of the OD procedures allowed the derivation of the OD-groupoid family (λ and σ operations), as well as the MDO (Maximum Degree of Order) structures. The layer symmetry (λ) is A(2)mm, the interlayer symmetry (σ) consists of a glide plane n1/2,1/2 and two-fold screw axes parallel to 010 and 001 with the translation components 1⁄4 b and 1⁄4 c, respectively. For this OD family two MDO polytypes exists. The former has monoclinic symmetry, C12/c1, whereas the latter is monoclinic, P12/c1. The OD treatment of the crystal structure of vurroite allowed to prove that the true symmetry of this mineral is monoclinic and that the apparent orthorhombic symmetry observed for the X-ray pattern of the measured crystal is due to a twinning phenomenon. Prof. S. Merlino is gratefully acknowledged for his contribution on the OD interpretation of the structure of vurroite. 1 Pinto D., PhD thesis, University of Bari, 2004, 165. 2 Garavelli A.,Mozgova N.N., Orlandi P., Bonaccorsi E., Pinto D., Borodaev Y., Canadian Mineralogist, 2005, in press. 3 Pinto D., Balić-Žunić T., Bonaccorsi E., Makovicky E., 26th Nordic Geological Winter Meeting, Uppsala, Sweden,2004, 106-107, abstract. 4 Dornberger-Schiff K., Abh. Dtsch. Akad. Wiss. Berlin. Kl. Chem. Geol. Biol., 1964, 3, 1-107
Retracts of violence in the poetry of Claudia Roquette-Pinto
No full textRESUMO: O presente artigo objetiva salientar aspectos da violência social e seus reflexos dentro da poética de Cláudia Roquette-Pinto, em específico em seu poema “Sítio”. Será abordado o modo com o qual a autora trabalha suas criações, e que resulta na classificação de suas obras como referência no âmbito da poesia contemporânea brasileira. _________________________________________________________________________ ABSTRACTThe present article aims to emphasize aspects of social violence and its effects in the poetry of Cláudia Roquette-Pinto, in special into her poem “Sítio”. It will be discussed the way that the author works her creations, which results in the classification of her artworks as a reference within contends about Brazilian contemporary poetry
Pachamama Owen and Pinto
No full textPachamama Owen and Pinto, new genus Type species. Pachamama speciosa Owen and Pinto, herein designated. Diagnosis. The structure of the antenna and wings distinguishes this genus. Antenna without a funicle, club 3 segmented; C 3 elongate, much longer than C 1 and C 2 combined; scape sexually dimorphic, enormously inflated in male (Fig. 4), unmodified in female (Figs. 5, 7). Forewing (Fig. 2) broad, with all veins confluent and sigmoid in arrangement, without a radial process; disk fumate except at apex, sparsely setose, RS 1 absent; posterior margin with a distinct preretinacular lobe. Hind wing (Fig. 3) broad, subtriangular in shape, its anterior margin broadly Vshaped basal to hamuli. Male genitalia (Fig. 6) with aedeagus and genital capsule distinct, the latter bearing parameres and volsellae. Etymology. Pachamama: Quechuan for mother earth, and the Incan earth god. Description. Body (Fig. 1) compact, gibbose. Eyes red. Head broad, greatest width exceeding that of mesosoma; with a smooth plate on vertex; lateral ocelli adjacent to compound eyes; malar sulcus absent. Antenna sexually dimorphic; scape of male greatly enlarged, that of female unmodified; flagellum with two anelli and three club segments; C 1 and C 2 short, transverse; C 3 elongate, subconical, much longer than C 1 and C 2 combined. Mandible (Fig. 8) with two acute and heavily sclerotized teeth posteriorly and a lanceolate, socketed, more lightly sclerotized tooth anteriorly, ental surface between anterior and posterior teeth subcrenate. Maxillary palp (Fig. 9) 1 segmented. Labial palp short but distinct, with two relatively long setae at apex. Midlobe of mesoscutum and scutellum each with two pair of setae. Forewing broad, widest near apex; posterior margin lobed immediately basal to retinaculum; disk fumate except at apex, with relatively sparse setation; RS 1 and basal vein tracks absent; patch of foliate obovate sensilla on ventral surface anterior to retinaculum; venation sigmoid, with SC, PM, MV, & SV all confluent; radial process absent; PM with two setae and a single campaniform sensillum at apex; PM curving precipitously up to wing margin and, with SC, delimiting a large costal cell; MV elongate; SV not constricted at base, relatively straight, diverging only slightly from margin of wing. Hind wing broad and subtriangular, with widest point at hamuli; anterior margin broadly Vshaped in basal half. Male genitalia as in Trichogrammatini (Viggiani 1971, 1984); aedeagus separate from genital capsule; genital capsule presumably open dorsally; parameres and volsellae present, intervolsellar process absent.Published as part of Owen, Albert K. & Pinto, John D., 2004, Pachamama, an uncommon and distinctive new genus of Trichogrammatidae (Hymenoptera: Chalcidoidea) from tropical America, pp. 1-8 in Zootaxa 664 on page 2, DOI: 10.5281/zenodo.15849
Identidade e alteridade na Peregrinação de Fernão Mendes Pinto
No full textMestrado em Estudos PortuguesesO presente trabalho pretende apresentar uma análise da evolução
antropológica de Fernão Mendes Pinto aquando do seu contacto com a cultura
Oriental. É também nosso objectivo comprovar que a definição que o autor
tenta fazer do “Outro” oriental lhe vai permitir redescobrir a sua identidade.
O encontro de uma cultura nova permitiu ao homem de Quinhentos
iniciar o processo multicultural, e por conseguinte encetar o diálogo
intercultural. Na análise da Peregrinação tentaremos reflectir de que forma
Fernão Mendes Pinto foi influenciado por esse processo ao descrever o
“Outro” com o qual se encontrou, e em tantos aspectos tão diferente de si.
ABSTRACT: The present work intends to present an analysis of the anthropological
evolution of Fernão Mendes Pinto related to his contact with the oriental
culture. It is also our purpose to prove that through the definition that the author
tries to do of the “Other” he begins to rediscover his own identity.
The encounter with a new culture allowed the men of the 16h century
to begin the multicultural process, and consequently the intercultural dialogue.
In our analysis of the Peregrinação we will try to reflect about the way that
Fernão Mendes Pinto was influenced by the process of describing the “Other”,
with whom he contacted, and in so many ways so different from him
L'arte contemporanea 'osserva' Lucrezio
No full textsaggio sugli artisti contemporanei che hanno creato delle opere in relazione al De rerum natur
Practicum piece on the author\u27s assistance in helping Joe Pinto of Massachuset
No full textPracticum piece on the author\u27s assistance in helping Joe Pinto of Massachusetts locate a lobster shack he visited in 1942 while stationed at the former Dow Field in Bangor. Pinto has been trying to locate the place since 1947. The lobster shack turned out to be the old Henderson place in North Brooklin
Epicauta (Macrobasis) sorjuanae Pinto 2019, new species
No full textEpicauta (Macrobasis) sorjuanae Pinto, new species Zoobank.org/ urn:lsid:zoobank.org:act: F7A6E176-FC2E-42C4-BD8C-1D49B11AE50A (Figs. 1, 2, 4) Description. Male. Moderately slender; length = 9–13 mm (mean = 10.3 mm). Black except head capsule orange with black restricted to gula and area between base of antennae and below eyes. Vestiture short, decumbent, dense except on head, dark brown to black, not affecting body color. Head: Subquadrate, widest at eyes, length 0.78X (0.75–0.81) width at eyes, 0.83X (0.79–0.88) width immediately above eyes; interocular distance half head width at eyes; head capsule bisected by a fine line extending from vertex to base of occiput; punctures fine, relatively dense on frons, becoming sparser on vertex and occiput, both areas with numerous punctures separated by a distance exceeding their diameter. Eyes moderately bulged, narrowly, distinctly emarginate with dorsal lobe much shorter and narrower than ventral lobe, ventral lobe extending to outer margin of maxilla on underside of head, maximum eye width ca. 0.40X head length. Antennae moderately robust, subfiliform, tapering slightly to apex, moderately long with apex of antennomere 3 reaching top of head and antennomere 1 very slightly impressed anteroapically; antennomeres subcylindrical with antennomere 2 about half the length of antennomere 3; exserted setae very short, inconspicuous; length/width ratios of antennomeres (in holotype): 40/15, 16/12, 35/16, 23/16, 27/15, 26/15, 26/14, 25/13, 25/13, 24/13, 33/ 11. Mandibles strongly curved to apex, not extending beyond apex of labrum. Maxillary and labial palpi slightly enlarged, broadened; last maxillary palpomere without setae on ventral surface. Thorax: Pronotum subcampaniform, widest across basal margin, length and width subequal [mean length/ width ratio = 1.03 (0.98–1.08)], width at apical third 0.92X (0.90–0.96) basal width; disk with shallow median depression at base and obsolescent longitudinal median line; punctures relatively small, very dense, crowded. Wing membrane dark. Protibia unicalcarate; posterior apical spur exserted, curved slightly, anterior apical spur absent; metatibia with a well-developed apical comb of 6 teeth on medial surface; metatibial spurs similar, bladelike, apex acute and slightly pallid; tarsi with light-colored pads ventrally on all segments but restricted to apex of tarsomere 1 on middle and hind legs; tarsomeres 1 and 2 of protarsi subequal in length. Abdomen: Last ventrite broadly, shallowly emarginate. Female. Unknown. Types. Holotype ♂: MEXICO: Puebla: Las Pe ~nas, 4.5 mi. SE; ix-5-1972; Byers and Thornhill; deposited in SEMC. Five paratypes: MEXICO: Oaxaca: Huajuapan, 21 km NW; x-14-1978; E. Giesbert; 1♂; UCRC. Teotitlán, 12.8 mi. S; viii-4-1975; Taylor and Sullivan; 1♂; UCRC. Valerio Trujano; vii-28-1937; 1♂; CAS. Petalcingo; xi-25-1963; A. E. and M. M. Michelbacher; 2♂; EMEC. Additional Material. Dr. Mario Garc´ıa-Par´ıs, Museo Nacional de Ciencias Naturales, Madrid, Spain, informed me of the following additional records of E. sorjuanae. Puebla: San José Axuxco (Petlanco); xi-5-1988; [in the collection of the Universidad Nacional Autónoma de México, Estación de Biolog´ıa (Chamela]. Oaxaca: Cuicatlán, 26 km SSE; 17°36.988’N, 96°55.392’W; x-17-1998 [in the collection of the Universidad Nacional Autónoma de México México, DF]. Dr. Garc´ıa-Par´ıs provided a photograph of a specimen from San José Axuxco. Requests to the collections involved to borrow this additional material either were not received or went unanswered. Geographic Distribution. Known only from Puebla and Oaxaca, Mexico. Seasonal Distribution. Seven records from 4 August 4 to 17 October. Etymology. Named after Sor Juana Inés de la Cruz, 17 th century Mexican nun, scholar, dramatist, and early feminist. Remarks. Subgeneric placement of E. sorjuanae is indicated by the structure of antennomere 1 (arcuate posterior surface) and presence of an apical metatibial comb, two features found only in Macrobasis (Selander and Mathieu 1969; Pinto 1991). The single protibial spur and slightly modified antennomere 1 in males as well as the relatively short antennomere 2 best places the new species in the Funesta Group. Within Macrobasis, coloration alone separates E. sorjuanae from all described species (Fig. 1). The only other North American Epicauta with an orange head and remainder of the body black is a form of Epicauta atrata (Fabricius) of the nominate subgenus. That species occurs predominantly in eastern USA and extends south only into northeastern Mexico (Tamaulipas, Nuevo León) (Pinto 1991). Within the Funesta group, E. sorjuanae is most similar to Epicauta atripilis Champion, also from southern Mexico, and it keys to that species in Pinto (1991). Coloration and certain more subtle features easily separate the two species. The predominantly orange head capsule, fine, relatively sparse punctation on the head (Fig. 2), and in males, the subequal first and second tarsomeres, exserted apical protibial spur (Fig. 4), and slightly enlarged palpi characterize E. sorjuanae. In E. atripilis, cuticle coloration, including that of the head, is black, punctation on the vertex and occiput is coarser and considerably more dense (Fig. 3), and in males the first tarsomere is distinctly longer than the second, the apical protibial spur is straight (Fig. 5), and the maxillary and labial palpi are unmodified. The male genitalia are similar in both species.Published as part of Pinto, John D., 2019, Two New Species of Meloidae (Coleoptera) from Mexico, pp. 1007-1012 in The Coleopterists Bulletin 73 (4) on pages 1008-1009, DOI: 10.1649/0010-065X-73.4.100
Lacalamita, M., Mesto, E., Mongelli, G., Mameli, P., Cerri, G., Pinto, D., Buccione, R., Schingaro, E. 2023. Characterization of Red Muds as valuable resource for sustainability. Convegno Nazionale Italiano sui Geopolimeri. Bari February, 16-17 2023.
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