20,698 research outputs found
CEDRIC J. POWELL
No full textCEDRIC J. POWELL
Inducted: 2010
Citation:
For exceptional scientific and organizational work in establishing the physical basis (and infrastructure) for electron spectroscopies of solids, especially as applied to quantitative surface analysis and surface standards
Tenure: 1962-2006
Birth: 1935; Perth, Australia
Education:
University of Western Australia, BS (Physics), 1956
University of Western Australia, PhD (Physics), 1962
Positions held:
Physicist, Atomic Physics and Optical Physics Divisions, Institute for Basic Standards, 1962-1978
Chief, Surface Science Division, Center for Chemical Physics, 1978-1991
Leader, Surface Spectroscopies and Thin Films Group, Surface and Microanalysis Science Division, 1991-1994
NIST Fellow, Surface and Microanalysis Science Division, 1994-2006
NIST Scientist Emeritus, Surface and Microanalysis Science Division, 2007-Present
Honors:
US Department of Commerce Silver Medal (1983) and Gold Medal (1986)Award of Merit, American Society for Testing and Materials (ASTM) (1988)
Riviere Prize, UK ESCA Users Group (1992)
Creation of Cedric Powell Award by ASTM Committee E-42 on Surface Analysis (1993)
Creation of Powell Prize by the Surface Analysis Society of Japan (1995)
Albert Nerken Award, American Vacuum Society (2001)
Technology Prize, International Union of Vacuum Science, Technique, and Applications (2007)
Memberships:
American Physical Society, American Vacuum Society, American Assn. for the Advancement of Science
ASTM Committee E-42 on Surface Analysis, chairman (1980-85)
Board of Trustees, Gordon Research Conferences (1982-88), chairman (1985-86)
Board of Directors, American Vacuum Society (1988-89)
ISO Technical Committee 201 on Surface Chemical Analysis, chairman (1992-98)
Publications:
Co-editor of 3 books, co-author of 5 NIST databases, and an author of more than 240 publications including:
Powell, C. J., “Contrasting Valence-Band Auger-Electron Spectra for Silver and Aluminum”, Phys. Rev. Letters 30, 1179 (1973)
Powell, C. J., “Attenuation Lengths of Low-energy Electrons in Solids”, Surface Science 44, 29 (1974)
Powell, C. J., “Cross Sections for Ionization of Inner-shell Electrons by Electrons”, Rev. Mod. Phys. 48, 33 (1976)
Powell, C. J. and Seah, M. P., “Precision, Accuracy, and Uncertainty in Quantitative Surface Analyses by Auger-Electron Spectroscopy and X-ray Photoelectron Spectroscopy”, J. Vac. Sci. Technol. A 8, 735 (1990)
Tanuma, S., Powell, C. J., and Penn, D. R., ""Calculations of Electron Inelastic Mean Free Paths. II. Data for 27 Elements over the 50-2000 eV Range,"" Surface and Interface Analysis 17, 911 (1991)
Powell, C. J. and Jablonski, A., “Evaluation of Measured and Calculated Electron Inelastic Mean Free Paths Near Solid Surfaces,” J. Phys. Chem. Ref. Data 28, 19 (1999
Epic. adesp. fr. 1 Powell: testo e commento
No full textCritical edition of the epic. adesp. fr. 1 Powell, with word-by-word commentary. Edition and commentary are preceded by a critical review of previous suggestions about the authorship and/or date of the fragment, and followed from the author's conclusions about the date: fragment a is probably Hellenistic: the date of b and c is uncertain. There are insufficient grounds for establishing the identity of the author
Construção colaborativa do conhecimento tecnológico, pedagógico e do conteúdo de professores de matemática
No full textResumo
As novas tecnologias de informação e comunicação desafiam os educadores em Educação Matemática a responder às mudanças que as mesmas estimulam em nossa sociedade. Assim, baseado em dois desafios instigados pelas novas tecnologias digitais, apresentamos12 uma proposta com o objetivo de avançar na construção colaborativa do conhecimento tecnológico, pedagógico e do conteúdo de professores de Matemática. Nossa proposta é fruto de um projeto colaborativo - eMat - entre pesquisadores de duas universidades que reúne professores de Matemática que desejam evoluir nas suas práticas, aprendendo matemática colaborativa e discursivamente com tecnologias digitais. Usamos um quadro conceitual e teórico que inclui ideias sobre o complexo de corpos de conhecimentos tecnológico, pedagógico e do conteúdo (CTPC), proposto por Mishra e Koehler (2006). Este se constitui quando um professor usa apropriadamente as tecnologias digitais para fornecer oportunidades aos seus alunos para interagirem colaborativamente para fazer Matemática (GATTEGNO, 1987). Apresentamos dados de dois momentos de um curso online que pode contribuir para o desenvolvimento profissional, ilustrando como pequenas equipes de professores constroem seu CTPC em um ambiente virtual de aprendizagem - Virtual Math Teams with GeoGebra. Assim, por meio do nosso projeto, eMat, estamos dando suporte para professores que estão dispostos a usarem novas tecnologias digitais, as quais podem ser úteis para que os seus alunos manipulem objetos matemáticos e percebam relações entre os objetos e relações de relações.
Abstract
The new information and communications technologies challenge educators of mathematics education to meet the changes that it stimulates in our society. On the basis of two challenges instigated by new digital technologies, we present a response addressing the objective to evolve the collaborative construction of mathematics teachers’ technological pedagogical and content knowledge. Our response is a collaborative project—eMath—among researchers from two universities to engage mathematics teachers to develop practices that allow them to learn mathematics collaboratively and discursively with digital technologies. Using a conceptual and theoretical framework that includes ideas on the complex bodies of technological, pedagogical and content knowledge (Mishra and Koehler, 2006) involved when a teacher appropriately uses digital technologies to provide opportunities for students to interact collaboratively and discursively to do the mathematics (GATTEGNO, 1987). We present data from two different moments in an online professional development course to illustrate how small teams of teachers construct their CTPC in a virtual learning environment—Virtual Math Teams with GeoGebra. Through our project, eMath, we are supporting teachers to be willing to adapt to new digital technologies that may be useful for your students to manipulate mathematical objects and perceive relationships between objects and relations of relations.Peer reviewe
Sparganothoides arcuatana Kruse and Powell 2009, new species
No full text21. Sparganothoides arcuatana Kruse and Powell, new species Figs. 28, 52, 83, 84, 104, 105 Diagnosis. Sparganothoides arcuatana has two color morphs: one golden, similar to S. xenopsana, and the other brownish copper. The large arc-shaped valval crease in the male genitalia is unique to this species. Description. Male. Head: Frons yellowish brown, smooth scaled; vertex roughened laterally, brownish copper or golden yellow, with dark brown scaling; two large exoskeletal protuberances between mesalposterior margins of compound eyes and angled toward middle; one laterally broad protuberance between antennae; broad area of densely packed, short, yellowish brown to black scales between anterior and posterior protuberances; short, erect, yellowish white to brown scales between the posterior protuberances. Labial palpus orange or brownish yellow mesally, brownish copper with dark brown scales or golden yellow with dark brown scales laterally. Antennal scaling brownish copper or golden yellow. Thorax: Smooth scaled laterally, brownish copper or golden yellow, with scattered dark brown scales; dense column of short yellowish white to brown scales mesally; tegula with clump of small orange, brown, or black pointed scales at apex giving tegula truncate appearance. Forewing length 10.3–12.1 mm (= 11.3; n = 6). Forewing costal fold extending slightly less than one-half wing length; forewing ground color brownish copper or brownish yellow to golden yellow, with dense, uniform scattering of brown scales and spots, some orange scaling scattered throughout; subterminal fascia dark brown with orange scales in gold morph, extremely vague in brownish copper morph; brown or dark brown tornal mark in gold morph, often absent in copper morph, indistinct dark brown and orange transverse strigulae in broken lines in subterminal and terminal areas; dark brown spot often present at apex of discal cell. Fringe orange or brownish yellow. Hindwing grayish white with dense gray transverse striae throughout. Abdomen: Genitalia (Fig. 28; slide #5568; EME; Mexico, Veracruz, 22 mi W Cd. Mendoza; n = 6) with uncus long, slender, curved, with long setae dorsally and patch of short setae ventrally, unmodified apically; tegumen slightly raised and triangular at base of uncus; socius subtriangular posteriorly, secondary arms long, slender, abruptly angled near middle, enlarged apices elongate and nearly symmetrically widened; transtilla strongly sclerotized, weakly bilobed, spines small, numerous over posterior margin, anterior process with a small dimple at middle; valva subrectangular with valval crease sclerotized, strongly curved, horseshoe-shaped near middle of valva, not connecting to sacculus; costa straight; sacculus convex; pulvinus present; phallus pistol-shaped, aedeagus parallel-sided, gently curved, shorter than phallobase, with ventral lip apically, attached to juxta by a thin process; cornuti with a minute spine near base. Female. Head, Thorax: Essentially as described for male, except forewing with more suffused markings. Forewing length 11.1–12.5 mm (= 12.0; n = 10). Abdomen: Genitalia (Fig. 52; slide #5577; EME; Mexico, Veracruz, 22 mi W Cd. Mendoza; n = 8) with papillae anales parallel-sided, subtriangular posteriorly; sterigma strongly sclerotized ventrally, concave anteriorly; ductus bursae relatively short, widened anteriorly; corpus bursae large, irregularly rounded; signum more than three times as long as wide, bilobed, curved, attenuate at apices. Type material. Holotype: Male: MEXICO: VERACRUZ: 22 rd km W Cd. Mendoza, 2150 m, 13.viii.1987, J. Brown & J. Powell, reared from eggs on synthetic diet, emgd. 13.ii.1988, JAP 87H7 (EME). Paratypes (5♂, 18♀). MEXICO: JALISCO: Nevado de Colima, 8200’, Parque Nacional, 10.7 mi N Hwy 54, 17.ix.1986 (1♂), N. Bloomfield (SDNHM). OAXACA: Río Guajolote, 2000 m, 30.viii.1984 (1♂, 1♀), E. Welling (EME). PUEBLA: 7.5 km NE Azumbilla, 2200 m, 22.viii.1987 (1♂, 1♀), J. Brown & J. Powell (EME). VERACRUZ: 15 rd km W Cd. Mendoza, 1840 m, 14.viii.1987 (1♀), J. Brown & J. Powell (EME). 4 km SE Las Vigas, 2200 m, 16.viii.1987 (1♀), J. Brown & J. Powell (EME). 22 rd km W Cd. Mendoza, 2150 m, 13.viii.1987 (1♂, 14♀), blacklight, J. Brown & J. Powell (EME, NMNH), reared from eggs on synthetic diet, emgd. 20.xii.1987 (1♂), 12.i.1988 (1♂), JAP 87H7 (EME). Additional specimens examined (4 unassociated females). MEXICO: MEXICO: 7 km WSW Juchitepec, 2750 m, 25.viii.1987 (1 F), J. Brown & J. Powell (EME). VERACRUZ: Cañon Las Minas, 13 km NE Perote, 2150 m, 18.viii.1987 (3 F), J. Brown & J. Powell (EME). Immature stages. Eggs are peach colored and covered by an opaque colleterial secretion exceeding the patch by ca. 0.70–0.90 mm. Eggs are arranged in regular round patches of 9–34 (= 17.4 eggs per patch, n = 9). Eggs hatch in 10–15 days. Larvae profusely web the edges of diet and leaves. Larvae fed on synthetic diet and Quercus lobata with variable success, but they did not feed on Prunus lyonii or Quercus agrifolia. The anal comb has six tines. Development time from ovipoistion to pupation ranged from 56 days to five months. Biology. Adults of this species are active in August and September in montane habitats. Distribution. Sparganothoides arcuatana is known only from southern Mexico. It occurs in the Sierra Madre Occidental in Jalisco and the Sierra Madre Oriental in Veracruz and Puebla, ranging south to Oaxaca. Remarks. The golden morph is known from two males —one from Jalisco and one from Oaxaca. Somewhat intermediate forms are found in Puebla (n = 2). We cannot determine with certainty whether the unassociated females cited above are conspecific with the males. Etymology. The name is derived from the Latin “arcuatus” (= bent like a bow) and refers to the unusual, arc-shaped crease in the valva in the male genitalia.Published as part of Kruse, James J. & Powell, Jerry A., 2009, Systematics of Sparganothoides Lambert and Powell, 1986 (Lepidoptera: Tortricidae: Sparganothini), pp. 1-78 in Zootaxa 2150 (1) on pages 43-44, DOI: 10.11646/zootaxa.2150.1.1, http://zenodo.org/record/531143
Sparganothoides ocrisana Kruse and Powell 2009, new species
No full text15. Sparganothoides ocrisana Kruse and Powell, new species Figs. 1, 21, 47, 75, 76, 103, 107 Diagnosis. Sparganothoides ocrisana is similar to S. capitiornata and S. canorisana, but the male genitalia are distinct, in particular the shapes of the valvae. Sparganothoides ocrisana exhibits the greatest sexual dimorphism of any species in the genus, with males considerably more strongly patterned than females. Description. Male. Head: Frons yellowish brown, smooth scaled; vertex roughened laterally, yellowish brown to brown, with a pair of exoskeletal protuberances between mesal-posterior margins of eyes, angled toward middle; one small elongate protuberance between antennae; broad area of densely packed, short, yellowish brown scales between front and rear protuberances; short, erect, yellowish white scales between posterior two protuberances. Labial palpus brownish yellow mesally, yellowish brown to brown laterally. Antennal scaling yellowish brown to brown. Thorax: Smooth scaled laterally, yellowish brown or brown with scattered dark brown scales, dense column of short yellowish white to brown scales mesally; tegula with clump of small orange or brown pointed scales at apex so that tegula appears truncated. Forewing length 7.8–9.1 mm (= 8.1; n = 10). Forewing costal fold shorter than 0.5 wing length, with costa often curled beyond middle; forewing ground color brownish yellow, with dense scattering of brown to grayish brown scales and spots; subbasal, median, and subterminal fascia brown with orange and dark brown scales extending from costa to dorsal margin either distinct and dark, thin and light brown, or absent; brown tornal mark part of median fascia when present; indistinct brown and orange transverse strigulae throughout subterminal and terminal areas; often with brown spot at apex of discal cell. Fringe brownish yellow. Hindwing yellowish white at base, gray at midwing, often with obscure dense gray transverse striae throughout. Abdomen: Genitalia (Fig. 21; slide #JAP6568; EME; Costa Rica, Puntarenas, Monteverde; n = 17) with uncus long, slender, curved, widened apically, with long setae dorsally and patch of small setae ventrally; tegumen slightly raised and subtriangular at base of uncus; socius subtriangular posteriorly, secondary arms long, slender, abruptly angled near middle, enlarged apices strongly asymmetrically bilobed, boot-shaped; transtilla well sclerotized, bilobed, spines small, numerous over posterior margin, anterior process reinforced with invagination at middle; valva subrectangular with sclerotized curved crease connecting to near base of sacculus and extending over two-thirds of valva; costa weakly concave; sacculus convex; pulvinus present; phallus pistol-shaped, aedeagus more strongly curved ventrally than dorsally, shorter than phallobase, with ventral lip apically, attached to juxta by a thin process; phallobase long, with a short bulb; cornuti with minute spine near base. Female. Head: Frons yellowish brown, smooth scaled; vertex roughened laterally, yellowish brown to brown. Labial palpus brownish yellow mesally, yellowish brown to brown laterally. Antennal scaling yellowish brown to brown. Thorax: Dorsum smooth scaled, yellowish brown or brown with scattered dark brown scales. Forewing length 8.7–10.4 mm (= 9.1; n = 10). Forewing ground color brownish yellow, heavily suffused with grayish brown; subbasal, median, and subterminal fascia suffused, grayish brown with orange and dark brown scales extending from costa to dorsal margin either distinct and dark or narrow and light grayish brown; grayish brown tornal mark part of median fascia; indistinct grayish brown or dark brown and orange transverse strigulae throughout subterminal and terminal areas; occasionally with brown spot at apex of discal cell. Fringe brownish yellow. Hindwing gray with obscure dense gray transverse striae throughout. Abdomen: Genitalia (Fig. 47; slide #5601; EME; Costa Rica, Puntarenas, Monteverde; n = 9) with papillae anales parallel-sided, subtriangular posteriorly; sterigma strongly sclerotized ventrally, concave anteriorly; ductus bursae short, widened anteriorly; corpus bursae large, irregularly rounded; signum more than three times longer than wide, bilobed, curved, attenuate at apices. Type material. Holotype: Male: COSTA RICA: PUNTARENAS: Monteverde, 1350–1400 m, 22–24.vii.1990, at lights, S. Meredith & J. Powell (EME). Paratypes (38♂, 47♀). COSTA RICA: GUANACASTE: Estación Cacao, 1100 m, 8–18.ii.1995 (1♂), M. Moraga (INBio). SW side Volcan Cacao, 1000–1400 m, v.1988 (1♂), C. Chaves (INBio). Lado suroeste del Volcan Cacao, 23.x–9.xi.1990 (1♀), C. Chaves (INBio). Estación Las Pailas, P. N. Rincon de la Vieja, 800 m, 22.vii.1992 (1$M), D. Garcia (INBio). Estación Maritza, Lado oeste del Volcán Orosi, 600 m, viii.1990 (1♂), C. Chaves (INBio). HEREDIA: Santa Domingo, 21–25.v.1996 (1♂), J. Powell (EME). PUNTARENAS: Estación Biol. Las Alturas, 12 km NE San Vito, 1550 m, 22–24.i.1993 (2♂), J. Powell (EME). Monteverde, 1400 m, 25–26.vi.1979 (2♂, 1♀), D. Janzen (INBio), 10–11.xii.1979 (1♀), D. Janzen (INBio), 1300 m, 17–20.v.1985 (1♂), P. Opler & J. Powell (EME), 8–10.vi.1986 (2♂, 1♀), J. Chemsak & H. Katsura (EME), 11.vi.1988 (2♂, 4♀), 12.vi.1988 (2♂, 12♀), 13.vi.1988 (1♂, 3♀), J. Brown & J. Powell (EME), 1350–1400 m, 22–24.vii.1990 (2♀), J. Powell (EME), reared from eggs on synthetic diet, emgd. 11.x–21.xi.1990 (6 M, 7 F), JAP 90G14, 22–24.vii.1990 (6♂, 9♀), S. Meredith & J. Powell (EME, NMNH), 29–31.iii.1992 (2♂, 1♀), J. McCarty & J. Powell (EME), reared from eggs on synthetic diet, emgd. 22.vi, vii.1992 (2♂, 1♀), JAP 92C64 (EME). Monteverde, Cloud Forest Reserve HQ, 1450 m, 18.v.1985 (1♂, 1♀), J. Chemsak, P. Opler & J. Powell (EME). Monteverde Lodge, 28.v.1994 (1♀), J. Brown (EME). GUATEMALA: Baleu, Mpio. San Cristóbal, Verapaz, Alta Verapaz, 1350 m, 8–15.viii.1985 (3♂, 2♀), E. Welling (EME). MEXICO: VERACRUZ: Río Metlec Canyon, NW Fortín de las Flores, 6.vii.1974 (1♂), J. Chemsak & J. Powell (EME). Immature stages. Eggs are orange to deep ochreous orange and laid in small, regularly overlapping patches of 7– 28 eggs per patch (= 18.2, n = 5). Embryos become translucent during development, hatching in 10–14 days. Early instars profusely webbed the edges of synthetic diet. Larvae were reared on synthetic diet, but some were able to feed on Prunus. The anal comb has eight tines. Development time ranged from six to nine weeks. Adults emerged within two weeks following pupation. Biology. Adults have been captured during every month of the year except April and September; the species is probably multivoltine in Costa Rica and perhaps bivoltine farther north. Distribution. Sparganothoides ocrisana has been recorded from Costa Rica, Guatemala, and Veracruz, Mexico, in disturbed or remnant rainforest habitat. Remarks. This species is variable and sexually dimorphic.The single specimen from Mexico is smaller than its conspecifics (forewing length = 7.8 mm). Etymology. The name is derived from the Greek “okris” (= projecting) and refers to the protuberances of the head.Published as part of Kruse, James J. & Powell, Jerry A., 2009, Systematics of Sparganothoides Lambert and Powell, 1986 (Lepidoptera: Tortricidae: Sparganothini), pp. 1-78 in Zootaxa 2150 (1) on pages 36-37, DOI: 10.11646/zootaxa.2150.1.1, http://zenodo.org/record/531143
Lake Powell Research Project Bulletin, Number 34, November 1976
No full textScanned copy of "Lake Powell Research Project Bulletin," Number 34, November 1976, containing the report, "The concentrations of ten heavy metals in some selected Lake Powell game fishes," by Robert E. Bussey, David E. Kidd, Loren D. Potte
Sparganothoides carycrosana Kruse and Powell 2009, new species
No full text10. Sparganothoides carycrosana Kruse and Powell, new species Figs. 16, 70 Diagnosis. This species is superficially most similar to S. teratana but lacks the patch of greenish yellow scales characteristic of the latter. The uncus has a strongly bilobed apex in S. carycrosana, whereas it is more rounded apically in S. teratana. The genitalia of S. carycrosana are very similar to those of S. plemmelana, but the two species are dissimilar in coloration. Description. Male. Head: Frons pale brown to brownish gray, produced; vertex roughened, pale brown to brownish gray, occasionally with a gray median stripe. Labial palpus short, about twice as long as wide, light brown mesally, brown to brownish gray or brownish orange laterally. Antennal scaling brown. Thorax: Dorsum smooth scaled, light brown to grayish brown. Forewing length 8.3–10.3 mm (= 9.4; n = 10). Forewing costal fold short, less than one-half wing length; forewing ground color brown to brownish orange with dark brown to black rows of transverse strigulae throughout; light brown basal fascia with some orange suffusion in some specimens; brownish orange to dark brown median fascia distinct basally, extending from basal fascia, wide laterally and becoming diffuse, indistinctly linking to orange brown to dark brown subterminal fascia. Fringe yellowish white to brownish orange. Hindwing with irregular gray scaling, some specimens with dark gray transverse striae throughout. Abdomen: Genitalia (Fig. 16; slide #5546; EME; Mexico, Sinaloa, 2 mi SW Potrerillos; n = 14) with uncus long, curved, apex dorso-ventrally flattened, broad, strongly bilobed, U-shaped, with long setae dorsally, broad patch of spinules ventrally; tegumen raised into an exaggerated oval process at base of uncus, laterally lobed near base of socius/gnathos arms; socius subtriangular to ovately rounded posteriorly, secondary arms long, slender, abruptly curved before enlarged apices, enlarged apices asymmetrically widened, splayed in fanlike configuration; transtilla sclerotized, straight, spines short, numerous over most of posterior margin, anterior lobed process reinforced with invagination at middle; valva subpentangular without sclerotized crease, costa straight in basal half, abruptly angled toward apex; sacculus slightly concave; pulvinus absent; phallus pistol-shaped, aedeagus tapered, attenuate apically, shorter than phallobase, attached to juxta by a strongly sclerotized process, phallobase elongate with a small rounded bulb; cornuti in a dense clump of> 30, with a minute spine near base. Female. Unknown. Type material. Holotype: Male: MEXICO: SINALOA: 2 mi SW Potrerillos, 4200', 12.viii.1986, J. Brown & J. Powell (EME). Paratypes (22♂). COSTA RICA: GUANACASTE: Rincon National Park, Mirador, Ad., 900 m, 29.iii.1984 (1♂), D. Janzen (INBio). Estación Cacao, lado suroeste Volcán Cacao, 1100 m, 8–30.vi.1991 (1♂), C. Chaves (INBio), 2–9.v.1992 (1♂), C. Moraga & P. Rios (INBio). PUNTARENAS: Estación Biol., Las Alturas, 12 km NE San Vito, 1550 m, 22–24.i.1993 (2♂), J. Powell (EME). GUATEMALA: Chejel, [no date] (3♂), W. Schaus & Barnes (NMNH). Cayuga, [no date] (1♂), W. Schaus (NMNH). Baleu, Mpio. San Cristóbal, Verapaz, Alta Verapaz, 1350 m, 15.viii.1985 (3♂), E. Welling (EME). MEXICO: SINALOA: 2 mi SW Potrerillos, 4200', 12.viii.1986 (1♂), J. Brown & J. Powell (EME). TAMAULIPAS: El Encino, 250 m, 4–13.viii.1988 (1♂), V. Becker (VBC). Gómez Farias, 1200 m, 26.v.1997 (1♂), V. Becker (VBC). VERACRUZ: Fortín de las Flores, 24.vii.1966 (1♂), O. Flint & Ortiz (NMNH). Fortín de las Flores, 1010 m, 7–12.vii.1974 (4♂), J. Chemsak, E. Linsley & J. Powell (EME, NMNH). Río Metlec Canyon, NW of Fortín de las Flores, 6.vii.1974 (1♂), J. Chemsak & J. Powell (EME). Cordoba, 930 m, 11.vii.1974 (1♂), J. Chemsak & J. Powell (EME). Immature stages. Unknown. Biology. Adults have been captured from January through June in Costa Rica and from May through August in Guatemala and Mexico, probably reflecting multiple broods. Distribution. The species ranges from Sinaloa and Tamaulipas to Veracruz, Mexico, south through Guatemala to Costa Rica. Etymology. The name is derived from the Greek “karykrous” (= nut-brown).Published as part of Kruse, James J. & Powell, Jerry A., 2009, Systematics of Sparganothoides Lambert and Powell, 1986 (Lepidoptera: Tortricidae: Sparganothini), pp. 1-78 in Zootaxa 2150 (1) on pages 30-31, DOI: 10.11646/zootaxa.2150.1.1, http://zenodo.org/record/531143
The Powell-Cotton Dioramas and the Re-interpretation of an Idyll
No full textThis research examines the natural habitat dioramas created by Major P.H.G. Powell-Cotton, in doing so
it affects a remembering of a sense of place where a diorama reflects in Mieke Bal's view a three-dimensionality
that draws on architectural space; it then considers the three dimensional representation of
the landscape within the diorama itself; the two-dimensional illusion of a trompe l'oeil landscape
painting; and the exterior space occupied by the viewer. The Powell-Cotton natural habitat dioramas exist
behind large glass screens their purpose follows an aesthetic relationship with the emergence of the
natural habitat diorama and the ability to transfix perception through the re-interpretation of an idyll. The
potential for this practice-based research was to explore the possibility of developing an aesthetic for
sculpture and architectural space. However in focussing on the Powell-Cotton dioramas the notion of
aesthetic attitude would lose ground due to their idiosyncratic, artificial, and extraordinary nature, it then
prepared the basis of interpretation in establishing 'theatres of landscape' as an open concept. With
landscape, a sense of place anticipates various positions and numerous delays; it recollects the cognitive
knowledge brought to the prospect that involves aspects in, of and about landscape. Regarding the
studio-based project, the diorama was placed between the real and the unreal, challenging Bal's rationale
of the cognitive relationship of a diorama to the concept of a discursive space. Where both artist and
viewer 'activates' this space with their presence, they bring their own recollection of landscape and by
assigning landscape with memory the potentiality is where cognition becomes accentuated. Whereas the
unknown and uncharted can refute reality, memory is dependent on what is known both formally and
informally, it places the natural habitat diorama in a visual system that is both constructive and
destructive. Therefore the research methodology examines the historical context of the diorama through a
doctoral thesis by Karen Wonders and an analysis of Louis Daguerre's diorama by Richard Altick.
Following Bal's analysis of the diorama, this created a dilemma - in what ways are the perceptions of the
observer determined, and how are they undermined? Jonathan Crary and Giuliana Bruno considered the
diorama's position in relation to film and film archaeology, which ultimately the diorama and natural
habitat diorama could not compete with. In asking what has Powell-Cotton's museum to offer in the 21st
century, this thesis examines the concept of a diorama, its objectives and correspondingly its failings. As
the dioramas in the Powell-Cotton Museum were undocumented, these dioramas and their written, visual
and architectural relationship to Louis Daguerre offer a contribution to knowledge concurrent with the
relationship of this practice based research project. Whereupon the research diary forms the basis of a
contribution to new knowledge in the construction of small and large-scale dioramas, sculpture and
installations. By challenging Bal's analysis this research practice would investigate natural and projected
light and the visual language of transparency, translucency and opacity in the representation of landscape
and landscape as motif, and progressing to the structural implications of 2D and 3D work
Amorbia cordobana Phillips & Powell 2007, new species
No full text24. Amorbia cordobana Phillips & Powell, new species Figs 51, 52, 86, 108, 138 DIAGNOSIS. Amorbia cordobana is most similar to A. eccopta. Amorbia cordobana can be distinguished by the longer labial palpus, smaller size, and larger uncus. DESCRIPTION. MALE. FW length 8.4–8.5 mm (mean = 8.5; n = 2). HEAD: Frons convex, scaling concolorous with head, vertex smooth, golden brown. Antenna golden brown. Labial palpus brownish laterally, inner surface paler, 3.0X length between antennae, junction of segment II and III forming an oblique angle. THORAX: Dorsum smooth scaled, ground brown, tegula light brown. FW ground straw yellow, U-shaped discontinuous mark comprised of small patches of darker scales between median and postmedian area from costa to R 2. Fringe yellowish. HW beige. ABDOMEN: Straw yellow. Genitalia as in Fig. 86 (slide # JAP 3124, EME, Mexico, Veracruz, Córdoba; n = 2). Uncus reduced (1.0X length of its base), not extending beyond socii. Transtilla rectangular with numerous spines over posterior margin. Valva subrectangular, sacculus sclerotized, 0.75X length of valva, terminating in a lobelike process that extends just beyond the margin of valva, emarginate in basal 0.33. Aedeagus 0.75X length of valva, stout, somewhat evenly curved throughout. FEMALE. FW length 9.0–9.5 mm (mean = 9.4; n = 4). HEAD and THORAX: As described for male except lacking U-shaped mark on FW. ABDOMEN: Genitalia as in Fig. 108 (slide # 5802, EME, Mexico, Veracruz; n =2). Lamella antevaginalis developed into large lateral pockets; median sinus rounded. Ductus bursae 2.0X length of papillae anales; uniform in width, slight broadened anteriorly. Ductus seminalis from posterior end of ductus bursae. TYPE MATERIAL. Holotype: Male: MEXICO: VERACRUZ: Banderilla, 1M, 13.vii.1974, E. G. Linsley (EME). Paratypes. MEXICO: VERACRUZ: Córdoba, 1M, 17F, 6/ 28.vii. 1966 (J. Buckett, M. R. & R. C. Gardner, 13F, EME, 1M, 3F, USNM); Coscomatepec, 1F, i. viii.1975 (T. Taylor, LACM); Est. Biológica Las Tuxtlas, 1F, 1/ 10.vii.1988, 1F, 17/ 21.iv.1989 (J. Chemsak, EME); Río Metlec, cyn. NW Fortín de las Flores, 1M, 1F 6.vii.1974 (J. Chemsak & J. Powell, EME); Fortín de las Flores, 5F, 7/ 16.vii.1974 (J. Chemsak, E. G. Linsley & J. Powell, EME), 2F, 2/ 3.x.1975 (J. Chemsak, J. Powell, T. Eichlin & T. Friedlander, EME), 9 km N Fortín de las Flores, 1F, 12.viii.1987 (J. Doyen, EME); 4 km SW of Fortín de las Flores, 1F, 16.vii.1990 (J. Doyen, EME); Zongollica, 1400 m, 2F 27.x.1973 (V. Becker, VBC); San Andrés, 5 air km W Jalapa, 1600 m, 1F, 19.viii.1987 (J. Brown & J. Powell, EME). DISTRIBUTION AND BIOLOGY. This species was recorded only in the state of Veracruz, Mexico (Fig. 138). The immatures are unknown. Adults have been collected in April, July, August, and October. ETYMOLOGY. The specific epithet is derived from the locality of Córdoba, Veracruz, Mexico, where most of the paratypes were collected.Published as part of Phillips-Rodríguez, Eugenie & Powell, Jerry A., 2007, Phylogenetic relationships, systematics, and biology of the species of Amorbia Clemens (Lepidoptera: Tortricidae: Sparganothini)., pp. 1-109 in Zootaxa 1670 (1670) on page 4
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