124,135 research outputs found
Neocorvicoana Ratcliffe and Mico
No full textKey to the species of <i>Neocorvicoana</i> Ratcliffe and Micó <p> 1. Sternites in central third with transverse field of dense, long setae. Males with dense, long setae on ventral side of tarsomeres. Parameres as in Figure 9. --------------------------------------------------------------------------- <i>N</i>. chalybea (Blanchard)</p> <p> 1 <i>9</i>. Sternites in central third glabrous. Males with sparse, short setae on ventral side of tarsomeres ------------------------------------------------------------------------------------------------------- 2</p> <p> 2. Mentum, procoxae, and tibiae usually with piceous or black setae. Pygidium and/or sternites usually with ochre or creamy white maculae or flecks (sometimes absent in females); color may be enamel­like but never with lustrous, metallic color. Mesometasternal process weakly produced anteriorly just beyond mesocoxae. Parameres as in Figure 10. ---------------------------- ------------------------------------------------------------------------------------------------------------------------------ <i>N</i>. reticulata (Kirby)</p> <p> 2 <i>9</i>. Mentum, procoxae, and tibiae usually with tawny setae. Pygidium and/or sternites usually with lustrous, metallic, pale green maculae or flecks. Mesometasternal process not produced anteriorly beyond mesocoxae. Parameres as in Figure 11. --------------------------------------------------- <i>N</i>. tricolor (Schürhoff) <b> Clave para las Especies de <i>Neocorvicoana</i> Ratcliffe and Micó</b> </p> <p> 1. Área central de los esternitos provistos de pilosidad densa, y larga. Machos con pilosidad densa y larga cubriendo la zona ventral de los tarsómeros. Parámeros como en Figure 9 ------------------------------------ <i>N</i>. chalybea (Blanchard)</p> <p> 1 <i>9</i>. Área central de los esternitos glabra. Machos con setas cortas y aisladas en la zona ventral de los tarsómeros ------------------------------------------------------------------- 2</p> <p> 2. Pilosidad del mentón, procoxas y tibias normalmente de color marrón oscuro o negra. Pigidio y/o esternitos frecuentemente con manchas de color ocre o beige (a menudo ausentes en las hembras). Colores nunca metálicos, pudiendo mostrar cierta apariencia esmaltada. Apófisis mesometasternal sobrepasando ligeramente las mesocoxas. Parameros como en Figure 10. -------------------------------------------------------------------------------- <i>N</i>. reticulata (Kirby)</p> <p> 2 <i>9</i>. Pilosidad del mentón, procoxas y tibias normalmente de color anaranjado. Pigidio y/o esternitos frecuentemente con manchas metálicas de color verdoso pálido. Apófisis mesometasternal no sobrepasando las mesocoxas. Parámeros como en.. Figure 11. --------------------------------- <i>N</i>. tricolor (Schürhoff)</p>Published as part of <i>Ratcliffe, Brett C. & Micó, Estefania, 2001, A Review Of The Neotropical Genus Neocorvicoana Ratcliffe And Micó, New Genus (Coleoptera: Scarabaeidae: Cetoniinae: Gymnetini), pp. 279-296 in The Coleopterists Bulletin 55 (3)</i> on pages 283-284, DOI: 10.1649/0010-065x(2001)055[0279:arotng]2.0.co;2, <a href="http://zenodo.org/record/4900355">http://zenodo.org/record/4900355</a>
Flying fox (Pteropus) in Australia / by F.N. Ratcliffe.
No full textAt head of title: Commonwealth of Australia.; Report of co-operative work conducted on behalf of the Council, New South Wales Dept. of Agriculture and Queensland's Home Secretary's Dept.; Includes bibliographical references.; Electronic reproduction. Canberra, A.C.T. : National Library of Australia, 2011
Fig. 2 in A Review Of The Neotropical Genus Neocorvicoana Ratcliffe And Micó, New Genus (Coleoptera: Scarabaeidae: Cetoniinae: Gymnetini)
No full textFig. 2. Habitus of N. reticulata (Kirby), male.Published as part of Ratcliffe, Brett C. & Micó, Estefania, 2001, A Review Of The Neotropical Genus Neocorvicoana Ratcliffe And Micó, New Genus (Coleoptera: Scarabaeidae: Cetoniinae: Gymnetini), pp. 279-296 in The Coleopterists Bulletin 55 (3) on page 286, DOI: 10.1649/0010-065x(2001)055[0279:arotng]2.0.co;2, http://zenodo.org/record/490035
Pedagogical content knowledge for teaching concepts of the nature of science
No full textThis conference contribution seeks to provoke discussion of the question: If pedagogical content knowledge (PCK) can be represented for key science concepts, can it be established for aspects of the nature of science?’ I start from the premise that explicit, rather than implicit, teaching of aspects of the processes and practices of science is now expected in science curricula (variously labelled as ‘how science works’, ‘ideas-about-science’, ‘nature of science’), presenting challenges in classroom practice. The evidence base for understanding effective teaching and learning of the nature of science is developing but still limited. Much early research took the perspective that if teachers have a good understanding of the nature of science sound practice will follow. More recently, research projects have suggested a complex relationship between teachers’ understanding and their classroom practice. Little is known about how pupils develop and progress their understanding of the nature of science, adding to the difficulties in curriculum design and in understanding the PCK needed for effective practice. Nonetheless these are not reasons for not attempting to gain a better understanding of PCK for the nature of science. This contribution attempts to promote discussion of how barriers to understanding may be overcome. It will present examples of seeking PCK
Hoplopyga antilliana Ratcliffe 2012
No full textHoplopyga antilliana Ratcliffe, 2012 (Figs. 13–17) Hoplopyga antilliana Ratcliffe 2012: 112. Holotype male at FSCA, labeled “WEST INDIES: GRENADA /Par. St. Andrews, Mirabeau/Agric. Lab, 23.VII.1990 /Blacklight, H. Thomas ”, examined. Type locality: “West Indies: Grenada/ Par. St. Andrews, Mirabeau/Agric. Lab. ” Description. Length 15.5–16.5 mm; width across humeri 9.3–10.5 mm. Ground color of dorsum opaque, brownish yellow speckled with black. Head with distinct black spot either side of middle at base in both sexes. Pronotum with fuscous to piceous speckles or clouding on middle third (nearly or entirely obscuring ground color), fuscous, M-shaped mark (sometimes obscured by speckles), and narrow, longitudinal, brownish yellow band on midline (band sometimes absent or obscured). Elytra with fuscous to piceous clouding on surface (sometimes entirely obscuring ground color except just posterior to apical umbone on each elytron), with black markings as follows: each elytron with spot on mediodiscal area and J-shaped mark or reversed J-shaped mark on apical umbone. Ventral surface opaque, ground color brownish yellow speckled with black. Metasternum with reddish brown to piceous, shiny spot at middle and on apex of mesometasternal process. Abdominal sternites each reddish brown to piceous, shiny on middle third. Setae tawny. Head: Surface with large, dense, round and n-shaped punctures, each puncture with a minute seta in pristine specimens, punctures becoming smaller towards apex. Clypeal apex moderately reflexed, weakly emarginate at middle, weakly angulate either side of emargination. Antennal club distinctly longer than antennomeres 2–7 combined. Pronotum: Lateral margins obtusely angulate, appearing broadly rounded. Surface with small, moderately dense, n-shaped punctures on middle, punctures becoming large and dense laterally. Lateral margins with bead, bead sometimes reaching apical angle. Elytra: Surface of each elytron with 2 distinctly elevated, discal costae, lateral costa on each elytron interrupted and depressed on mediodiscal area. Depressions between costae with n-shaped punctures; punctures large, dense, arranged longitudinally in striae, not extending to base near scutellum. Apical declivity with large, dense, n-shaped punctures. Lateral margins with small, dense, round punctures, punctures becoming larger and n-shaped towards apex. Sutural costae each elevated into longitudinal keel on posterior half. Apices at suture strongly spinose. Pygidium: Surface distinctly convex in both sexes, with large, dense, concentric, n-shaped or m-shaped punctures. Venter: Metasternum with large, dense, n-shaped and transversely vermiform punctures either side of middle, punctures with short, dense setae. Mesometasternal process, in lateral view, subparallel to horizontal axis of body, moderately protuberant beyond mesocoxae; in ventral view (Fig. 14), apex broadly rounded. Abdominal sternites with large, dense, n-shaped punctures on lateral, opaque areas. Legs: Protibia slender, tridentate in both sexes, with distinct apical tooth, middle and basal teeth reduced. Parameres: Shaft divergent between midpoint and apex (Figs. 15–16). Lateral margins with broad bulge between midpoint and apex. Apices each with minute, lateral spur. Ventral face obliquely angled, visible in lateral view. Distribution. Hoplopyga antilliana from Grenada and Union Island in the Lesser Antilles (Fig. 17) is the only Hoplopyga species known from the West Indies. Locality Records. 9 specimens from BCRC, CMNC, FSCA, and UNSM. GRENADA (8): SAINT ANDREW (8): Mirabeau, Pearls Airport. SAINT VINCENT AND THE GRENADINES (1): UNION ISLAND (1): Chatham Bay. Temporal Distribution. January (1), June (4), July (1), August (1), September (1), October (1). Diagnosis. Hoplopyga antilliana is similar in appearance to H. liturata but is found only in the West Indies, whereas H. liturata does not occur there. Hoplopyga antilliana is darker and more robust than H. liturata and has two distinct, black spots at the base of the head. Hoplopyga liturata specimens sometimes have black clouding at the base of the head but never in the form of welldefined spots. Natural History. Little is known of the natural history of this species, but Ratcliffe (2012) indicated that H. antilliana adults are attracted to decaying fruits and sap. Specimens in the type series were attracted to blacklights at night.Published as part of Shaughney, Jennifer Marie & Ratcliffe, Brett C., 2015, A Monographic Revision of the Genus Hoplopyga Thomson, 1880 (Coleoptera: Scarabaeidae: Cetoniinae: Gymnetini), pp. 579-638 in The Coleopterists Bulletin 69 (4) on pages 591-592, DOI: 10.1649/0010-065x-69.4.579, http://zenodo.org/record/655383
Gorditus rotundus Ratcliffe, new species
No full textGorditus rotundus Ratcliffe, new species (Figs. 1–5) Type material. Holotype male, labeled “ Mina Carlota / Trinidad Mts/VII. ’ 39 CUBA /Parsons” and with my red holotype label. Holotype deposited at the U. S. National Collection (Smithsonian Institution, Washington, D. C., USA). Holotype. Male. Length 21.9 mm; width 12.4 mm. Form rotund, highly vaulted in lateral view. Color dark reddish brown. Head: Frons on anterior half with large, confluent punctures, posterior half with only a few sparse punctures. Frontoclypeal region at center with low, transverse swelling. Clypeus with surface similar to that of anterior half of frons, lateral margin constricted before ocular canthus; apex attenuate, narrowly truncate, weakly reflexed. Interocular width equals 6.0 transverse eye diameters. Antenna with 10 antennomeres, club short, subequal in length to antennomeres 2–7. Mandibles exposed, subtriangular. Pronotum: Surface punctate; punctures large, deep, moderately dense in anterior two thirds, sparse in posterior third, becoming denser in anterior angles. Disc lacking tubercle or fovea. Base with marginal bead, bead obsolete at center. Lateral margins with sparse, very long, reddish brown setae. Elytra: Sutural stria impressed. Surface nearly smooth, with minute, sparse punctures on sides in posterior half. Pygidium: Surface densely, completely rugulopunctate, with traces of a few long setae basolaterally on one side. In lateral view, surface regularly convex. Legs: Protibia vaguely quadridentate, teeth subequally spaced from one another, basal tooth greatly reduced. Metatibia at apex truncate, with 12 bristles on left leg (some broken off), 19 on right leg. Protarsomeres 3–5 on right leg missing. Metatarsomeres 4–5 on left leg missing. Ve n te r: Metasternum densely, setigerously punctate in anterior half, nearly smooth on posterior half; setae long, dense, reddish brown. Prosternal process small, laminate, narrowly subtriangular, hidden by long setae. Abdominal spiracles large, directed posteriorly. Parameres: Figs. 3–4. Form simple, slightly tapering to apices. Etymology. The specific epithet is from the Latin rotundus, meaning round; used here in reference to the distinctly globular body form. Distribution. Gorditus rotundus is known only from the Trinidad Mountains in Cienfuegos Province in south central Cuba (Fig. 5). Locality records. 1 specimen examined. CUBA (1): CIENFUEGOS (1): Mina Carlota (Trinidad Mountains). Temporal distribution. July (1). Diagnosis. The generic diagnosis above will suffice, since there is only this single species known. Females of G. rotundus remain unknown. Natural history. Nothing is known of the life history of this species. The type locality is approximately 450 m in elevation.Published as part of Ratcliffe, Brett C., 2010, Gorditus rotundus, a new genus and species of Pentodontini from Cuba (Coleoptera: Scarabaeidae: Dynastinae), pp. 56-60 in Zootaxa 2683 on pages 59-60, DOI: 10.5281/zenodo.19937
A REVIEW OF THE NEOTROPICAL GENUS \u3ci\u3eNEOCORVICOANA\u3c/i\u3e RATCLIFFE AND MICÓ, NEW GENUS (COLEOPTERA: SCARABAEIDAE: CETONIINAE: GYMNETINI)
Get PDFThe southern Neotropical cetoniine genus Neocorvicoana Ratcliffe and Micó new genus (Coleoptera: Scarabaeidae: Cetoniinae: Gymnetini) is established for three species previously placed in Corvicoana Strand, 1934 (nomen nudum) and Gymnetis MacLeay, 1819: N. chalybea (Kirby), N. reticulata (Schürhoff), and N. tricolor (Schürhoff), new combinations. The type species of the new genus is N. reticulata (Kirby). Corvicoana rudolfi (Frölich) is transferred to the genus Gymnetis. Corvicoana suavis (Schürhoff) and C. castanea (Schürhoff) are junior synonyms of N. chalybea. We include a taxonomic key to the species, nomenclatural history, descriptions, illustrations, and commentary. Se establece el género Neocorvicoana Ratcliffe y Micó genero nuevo (Coleoptera: Scarabaeidae: Cetoniinae: Gymnetini) para tres especies de Cetoninos del sur de la región Neotropical, anteriormente incluidos en Corvicoana Strand, 1934 (nomen nudum) y Gymnetis MacLeay, 1819: N. chalybea (Kirby), N. reticulata (Schürhoff), y N. tricolor (Schürhoff), combinaciones nuevas. La especie tipo del nuevo género es N. reticulata (Kirby). Se transfiere Corvicoana rudolfi (Frölich) al género Gymnetis. Corvicoana suavis (Schürhoff) y C. castanea (Schürhoff) son sinónimos de N. chalybea. Se aporta una clave taxonómica de las especies, revisión histórica de la nomenclatura del grupo, ilustraciones y comentarios
Stenocrates rionegroensis Ratcliffe 1978
No full textStenocrates rionegroensis Ratcliffe, 1978 Stenocrates rionegroensis Ratcliffe 1978b: 489 (Brazil (NA)) Distribution. Suriname: MHCN - NEW COUNTRY RECORD (Suriname, Nickerie, Nieuw-Nickerie, (5°55′13″N, 56°59′55″W). 29-XII-2010. A. J. Hielkema. On UV/HPL.); NZCS. Brazil (NA): Ratcliffe 1978b: 489 (NA), 2015c: 778; Endrödi 1985a: 742; Moore et al. 2018b: 298.Published as part of Hielkema, Auke J. & Hielkema, Meindert A., 2019, An annotated checklist of the Scarabaeoidea (Insecta: Coleoptera) of the Guianas, pp. 1-306 in Insecta Mundi 732 (732) on page 194, DOI: 10.5281/zenodo.367849
Potential of a compact low energy proton accelertor for medical applications
No full textThis thesis explores the potential of a compact low energy (<10MeV) proton accelerator for medical applications such as the production of neutrons for cancer neutron therapy and the production of SPECT (Single Photon Emission Computed Tomography) and PET (Positron Emission Tomography) radioisotopes.
During the course of this study the simulation code GEANT4 was used to study yields of these neutrons and isotopes from the typically low threshold high cross-‐section (p,n) reactions. Due to the limits of the
current models within GEANT4 some development of a new data-‐driven model for low energy proton interactions was undertaken and has been tested here. This model was found to be suitably reliable for continued study into the low energy production of positron emitting, PET, isotopes of copper and gallium as replacements for the main SPECT isotope technetium-‐99m. While 99mTc is currently the most popular radioisotope being used in over 90% of the worlds nuclear medicine diagnostic procedures supply is under threat by the impending shut down of the current reactor based sources.
Simulations of both thin and thick targets were carried out to study the potential of low energy production of these isotopes. The final activity of the radioisotopes after irradiation of these targets produced by the simulations has been shown here to be sufficient for multiple doses. The useable activity is dependent on the efficiency of the extraction process and the time between irradiation and administration
The ecological consequences of myxomatosis in Australia
No full textRatcliffe F. N. The ecological consequences of myxomatosis in Australia. In: La Terre et La Vie, Revue d'Histoire naturelle, tome 10, n°3-4, 1956. pp. 153-166
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