168,762 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
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
L'arte contemporanea 'osserva' Lucrezio
No full textsaggio sugli artisti contemporanei che hanno creato delle opere in relazione al De rerum natur
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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Silviculture, Pinto reseeding
No full textArtificial revegetation, Pinto reseeding. Acting ranger Wayne Cloward, D-1
Silviculture, Pinto reseeding
No full textArtificial revegetation, Pinto reseeding. Acting ranger Wayne Cloward, D-1
Europa umana . scritti in onore di Paulo Pinto de Albuquerque
No full textIl presente volume raccoglie i contributi che gli autori hanno deciso di dedicare a Paulo Pinto de
Albuquerque, che ha da poco concluso i suoi nove anni quale giudice della Corte europea dei
diritti umani. In particolare, si tratta di scritti editi e inediti di Antonio Balsamo, Paola Bilancia,
Elena Bindi, Marcello Bortolato, Silvia Buzzelli, Anna Silvia Bruno, Gianni Canzio, Daniela Cardamone, Luisa Cassetti, Roberto Chenal, Mario Chiavario, Sofia Ciuffoletti, Roberto Giovanni
Conti, Riccardo De Vito, Angela Di Stasi, Emilio Dolcini, Elvio Fassone, Fabio Fiorentin, Giovanni
Maria Flick, Davide Galliani, Gian Luigi Gatta, Fabio Gianfilippi, Glauco Giostra, Tania Groppi,
Roberto Kostoris, Elisabetta Lamarque, Giovanni Mammone, Vittorio Manes, Giuseppe Martinico, Anna Maria Maugeri, Mauro Palma, Marco Pelissero, Francesco Perrone, Oreste Pollicino,
Andrea Pugiotto, Guido Raimondi, Daniela Ranalli, Barbara Randazzo, Giorgio Repetto, Antonio
Ruggeri, Emilio Santoro, Vincenzo Sciarabba, Andrea Sitzia, Andrea Tamietti, Michele Taruffo,
Luisa Trizzino, Giulio Ubertis, Francesco Viganò, Vladimiro Zagrebelsky.
Europa Umana è il leit motiv che ha ispirato l’attività di Paulo Pinto de Albuquerque alla Corte di
Strasburgo. Ed è anche il titolo degli scritti in suo onore, grazie ai quali il lettore sarà in grado
di orientarsi in molte delle principali questioni nelle quali l’Europa è chiamata ad avere un ruolo
decisivo. Gli scritti in onore di Paulo Pinto de Albuquerque sono introdotti da due contributi dei curatori, uno
di Davide Galliani che ne traccia un profilo biografico e l’altro di Emilio Santoro che ne evidenzia
il ruolo nel sistema convenzionale
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