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New Method of Reducing Aero Acoustical Noise for a Quiet Propeller
Journal of Engineering Mechanics and Machinery (2019) Vol. 4: 1-28 DOI: 10.23977/jemm.2019.41001 Clausius Scientific Press, Canada ISSN 2371-9133 ‘Butterfly acoustical skin’ – new method of reducing aero acoustical noise for a quiet propeller Igor S. Kovalev Science and Technology Laboratory, Kinneret College, Emek Hayarden, 15132, Israel Correspondence: [email protected] Keywords: ‘butterfly acoustical skin’, moth, noise reduction, porous scales, propeller. Abstract: An experimental investigation was conducted on the effect ‘butterfly acoustical skin’ (metallic version of the lepidopterans scale coverage) on the acoustic performances of two - bladed propeller (diameter of 1200 mm, airfoil sections of NACA 2415, rotating speed of 1780 rpm, Re ≈ 2 × 105) in a low – speed straight through a wind tunnel. Attention was initially directed to this problem by observation of the porous scales and porous scale coverage of lepidopterans as well as other studies indicating the noise suppression of flying lepidopterans by wing appendages. The property of the moth coverage allows these insects to overcome bat attacks at night. These appendages are very small (size: 30 – 200 µm) and have a various porous structures. I discuss both many different micro – and nanostructures of the porous scales, and many differences in details among various structures of the porous scale coverage of lepidonterans. I consider here only porous scales of butterflies Papilio nireus, Nieris rapae, Deelias nigrina, male Callophrys rubi, male Polyommatus daphnis, butterfly Papilio palinurus as well as porous scale coverage of cabbage moth, moth of Saturniidae family and moth of Noctuoidea family. The evolutionary history of lepidopterans and the properties of lepidopterans scale coverage are briefly discussed as well as different methods of reducing aero acoustic noise of aircrafts. -
Β-1.3-Glucanases E Digestão De Leveduras Em Larvas De Aedes Aegypti Linnaeus (Diptera: Culicidae): Aspectos Fisiológicos E Moleculares
MINISTÉRIO DA SAÚDE FUNDAÇÃO OSWALDO CRUZ INSTITUTO OSWALDO CRUZ Mestrado no Programa de Pós-Graduação de Biologia Celular e Molecular β-1.3-glucanases e digestão de leveduras em larvas de Aedes aegypti Linnaeus (Diptera: Culicidae): Aspectos fisiológicos e moleculares Raquel Santos Souza Rio de Janeiro Fevereiro de 2014 i INSTITUTO OSWALDO CRUZ Pós-Graduação em Biologia Celular e Molecular Raquel Santos Souza β-1,3-glucanases e digestão de leveduras em larvas de Aedes aegypti Linnaeus, 1762 (Diptera: Culicidae): Aspectos fisiológicos e moleculares Dissertação apresentada ao Instituto Oswaldo Cruz como parte dos requisitos para obtenção do título de Mestre em Biologia Celular e Molecular Orientador: Prof. Dr. Fernando Ariel Genta RIO DE JANEIRO 2014 ii iii INSTITUTO OSWALDO CRUZ Pós-Graduação em Biologia Celular e Molecular RAQUEL SANTOS SOUZA β-1,3-glucanases e digestão de leveduras em larvas de Aedes aegypti Linnaeus, 1762 (Diptera: Culicidae): Aspectos fisiológicos e moleculares ORIENTADOR: Prof. Dr. Fernando Ariel Genta Aprovada em: 26/02/2014 EXAMINADORES: Prof. Dra. Denise Valle- IOC/FIOCRUZ (Presidente) Prof. Dra. Maria Helena Neves Lobo Silva Filha- CPqAM/PE (Membro titular) Prof. Dr. Ednildo de Alcântara Machado- UFRJ (Membro titular/revisor) Prof. Dra. Renata Schamma Lellis - IOC/FIOCRUZ (Suplente) Prof. Dra. Thaís Irene Souza Riback- PROCC/FIOCRUZ (Suplente) Rio de Janeiro, 26 de Fevereiro de 2014 iv Ao Dr. Fernando Ariel Genta, por me emprestar suas próprias asas quando eu achava que já não podia mais voar. v AGRADECIMENTOS “Não a nós, SENHOR, não a nós, mas ao teu nome dá glória, por amor da tua benignidade e da tua verdade. -
Life History and Larval Performance of the Peacock Pansy Butterfly, Junonia Almana Linnaeus (Lepidoptera: Rhopalocera: Nymphalidae)
IOSR Journal of Environmental Science, Toxicology and Food Technology (IOSR-JESTFT) ISSN: 2319-2402, ISBN: 2319-2399. Volume 1, Issue 2 (Sep-Oct. 2012), PP 17-21 www.iosrjournals.org Life history and larval performance of the Peacock pansy butterfly, Junonia almana Linnaeus (Lepidoptera: Rhopalocera: Nymphalidae) 1Bhupathi Rayalu. M, 2Ella Rao. K, 3Sandhya Deepika.D, 4Atluri. J.B 1,2,3,4 (Department of Botany, Andhra University, Visakhapatnam-530 003, Andhra Pradesh, India.) Abstract: The life history of the Peacock pansy butterfly, Junonia almana and larval performance in terms of food consumption and utilization, and the length of life cycle on its host plant Ruellia tuberosa are described for the first time. The study was conducted during 2008 at Visakhapatnam (17o 42' N and 82 18' E), South India. Junonia almana completes its life cycle in 24.40 1.14 days (eggs 3, larvae, 15 – 16, pupa 5 – 7 days). The values of nutritional indices across the instars were AD (Approximate Digestibility) 44.10 – 95.87%; ECD (Efficiency of Conversion of Digested food) 1.48 – 34.00%; ECI (Efficiency of Conversion of Ingested food) 1.41 – 15.00%, measured at the temperature of 28 ± 20 C and RH of 80 ± 10% in the laboratory. These relatively high values of ECD and ECI explain at least partially the ecological success of J. almana in the present study environment. Keywords: Life history, Junonia almana, captive rearing, immature stages, food utilization indices. I. Introduction Butterflies are known for the incontestable beauty of their wing colors, and contribute to the aesthetic quality of the environment. -
Colourful Butterfly Wings: Scale Stacks, Iridescence and Sexual Dichromatism of Pieridae Doekele G
158 entomologische berichten 67(5) 2007 Colourful butterfly wings: scale stacks, iridescence and sexual dichromatism of Pieridae Doekele G. Stavenga Hein L. Leertouwer KEY WORDS Coliadinae, Pierinae, scattering, pterins Entomologische Berichten 67 (5): 158-164 The colour of butterflies is determined by the optical properties of their wing scales. The main scale structures, ridges and crossribs, scatter incident light. The scales of pierid butterflies have usually numerous pigmented beads, which absorb light at short wavelengths and enhance light scattering at long wavelengths. Males of many species of the pierid subfamily Coliadinae have ultraviolet-iridescent wings, because the scale ridges are structured into a multilayer reflector. The iridescence is combined with a yellow or orange-brown colouration, causing the common name of the subfamily, the yellows or sulfurs. In the subfamily Pierinae, iridescent wing tips are encountered in the males of most species of the Colotis-group and some species of the tribe Anthocharidini. The wing tips contain pigments absorbing short-wavelength light, resulting in yellow, orange or red colours. Iridescent wings are not found among the Pierini. The different wing colours can be understood from combinations of wavelength-dependent scattering, absorption and iridescence, which are characteristic for the species and sex. Introduction often complex and as yet poorly understood optical phenomena The colour of a butterfly wing depends on the interaction of encountered in lycaenids and papilionids. The Pieridae have light with the material of the wing and its spatial structure. But- two main subfamilies: Coliadinae and Pierinae. Within Pierinae, terfly wings consist of a wing substrate, upon which stacks of the tribes Pierini and Anthocharidini are distinguished, together light-scattering scales are arranged. -
EPBC Act Protected Matters Report
Appendix A Protected Matters Search Tool Database Search EPBC Act Protected Matters Report This report provides general guidance on matters of national environmental significance and other matters protected by the EPBC Act in the area you have selected. Information on the coverage of this report and qualifications on data supporting this report are contained in the caveat at the end of the report. Information is available about Environment Assessments and the EPBC Act including significance guidelines, forms and application process details. Report created: 30/06/16 11:58:36 Summary Details Matters of NES Other Matters Protected by the EPBC Act Extra Information Caveat Acknowledgements This map may contain data which are ©Commonwealth of Australia (Geoscience Australia), ©PSMA 2010 Coordinates Buffer: 10.0Km Summary Matters of National Environmental Significance This part of the report summarises the matters of national environmental significance that may occur in, or may relate to, the area you nominated. Further information is available in the detail part of the report, which can be accessed by scrolling or following the links below. If you are proposing to undertake an activity that may have a significant impact on one or more matters of national environmental significance then you should consider the Administrative Guidelines on Significance. World Heritage Properties: None National Heritage Places: None Wetlands of International Importance: None Great Barrier Reef Marine Park: None Commonwealth Marine Area: 1 Listed Threatened Ecological Communities: 3 Listed Threatened Species: 74 Listed Migratory Species: 53 Other Matters Protected by the EPBC Act This part of the report summarises other matters protected under the Act that may relate to the area you nominated. -
Life Cycle of Family Nymphalidae in Detail with Reference to Each Sub Family
IRA-International Journal of Applied Sciences ISSN 2455-4499; Vol.04, Issue 03 (2016) Institute of Research Advances Pg. no. 425-430 http://research-advances.org/index.php/IRAJAS Life cycle of family Nymphalidae in detail with reference to each sub family Pawar P A.1, Deshpande V Y 2 1 Research Scholar, Shri Jagdish Prasad Jhabarmal Tibrewala University, Jhunjhunu, Rajasthan-333001, India. 2 Department of Zoology, Yashwantrao Chavan Institute of Science Satara, Maharashtra 45001, India. Type of Review: Peer Reviewed. DOI: http://dx.doi.org/10.21013/jas.v4.n3.p6 How to cite this paper: P A., P., & V Y, D. (2016). Life cycle of family Nymphalidae in detail with reference to each sub family. IRA-International Journal of Applied Sciences (ISSN 2455-4499), 4(3), 425-430. doi:http://dx.doi.org/10.21013/jas.v4.n3.p6 © Institute of Research Advances This work is licensed under a Creative Commons Attribution-Non Commercial 4.0 International License subject to proper citation to the publication source of the work. Disclaimer: The scholarly papers as reviewed and published by the Institute of Research Advances (IRA) are the views and opinions of their respective authors and are not the views or opinions of the IRA. The IRA disclaims of any harm or loss caused due to the published content to any party. 425 IRA-International Journal of Applied Sciences ABSTRACT In the present study life cycle of the sub families of the family Nymphalidae has been studied. Butterfly species of family Nymphalidae were identified as indicators of disturbance in any area. -
ATG Spring 2016 Newsletter
ARMIDALE TREE GROUP NEWSLETTER Number 107 Spring Edition October 2016 Planting Guides for Armidale Butterflies and Skippers by David Britton Editor: Kerry Steller The Armidale Tree Group 80 Mann St, Armidale, 2350 Phone 67711620 www.armidaletreegroup.org Cover Photo: Yellow Admiral Butterfly, Vanessa itea, drinking nectar from a Golden Everlasting or Paper Daisy in an Armidale garden (Photo: Kate Boyd) Editors note: 2016 Spring Edition Dear ATG Members and Friends Welcome to our 2016 Spring edition of the ATG Newsletter. It is a very busy Spring Season with so much happening to inform and entertain you. Keep abreast of what is on offer and join in when you can. Also consider our need for enthusiastic people on our great ATG committee at our AGM on 2nd November! What can talents you share with us? Kerry Steller (editor) Our feature article this season on Butterflies and Skippers was written by David Britton in 2002 and David has kindly updated this for us. Dr David Britton worked for UNE, leaving some years ago to be the collection manager of entomology at the Australian Museum in Sydney and now lives with tropical butterflies in Cairns. This article was written while David was living in Armidale. David’s article includes known food plants for many species. If you have identified butterflies or caterpillars feeding on other plant species we would be interested to know. For example, Peter Metcalfe says that while the caterpillars of Orchard Swallowtails usually eat leaves of citrus trees, Correas are in the same family as citrus and could be hosts for these lovely big butterflies, however David has seen the eggs laid but has not seen the larvae survive past the third moult. -
Varying and Unchanging Whiteness on the Wings of Dusk-Active and Shade-Inhabiting Carystoides Escalantei Butterflies
Varying and unchanging whiteness on the wings of dusk-active and shade-inhabiting Carystoides escalantei butterflies Dengteng Gea,b, Gaoxiang Wua, Lili Yangc, Hye-Na Kima, Winnie Hallwachsd, John M. Burnse, Daniel H. Janzend,1, and Shu Yanga,1 aDepartment of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104; bState Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Institute of Functional Materials, Donghua University, Shanghai 201620, People’s Republic of China; cState Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China; dDepartment of Biology, University of Pennsylvania, Philadelphia, PA 19104-6018; and eDepartment of Entomology, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013-7012 Contributed by Daniel H. Janzen, May 23, 2017 (sent for review January 19, 2017; reviewed by May R. Berenbaum, Jun Hyuk Moon, and John Shuey) Whiteness, although frequently apparent on the wings, legs, Natural whiteness is often attributed to the scattering or dif- antennae, or bodies of many species of moths and butterflies, along fusion of light from (sub)micrometer-sized textures including with other colors and shades, has often escaped our attention. Here, ribs, ridges, pores, and others (25, 26) as seen as white spots and we investigate the nanostructure and microstructure of white spots stripes on the wings of Morpho cypris and Morpho rhetenor helena on the wings of Carystoides escalantei, a dusk-active and shade- (18, 27) in the Nymphalidae. Other species, such as Pieris inhabiting Costa Rican rain forest butterfly (Hesperiidae). -
Lepidoptera: Pieridae
Blackwell Publishing LtdOxford, UKBIJBiological Journal of the Linnean Society0024-4066© 2007 The Linnean Society of London? 2007 90? 413440 Original Article PHYLOGENY AND BIOGEOGRAPHY OF THE APORIINA M. F. BRABY ET AL. Biological Journal of the Linnean Society, 2007, 90, 413–440. With 7 figures Phylogeny and historical biogeography of the subtribe Aporiina (Lepidoptera: Pieridae): implications for the Downloaded from https://academic.oup.com/biolinnean/article-abstract/90/3/413/2701092 by Harvard University user on 21 November 2018 origin of Australian butterflies MICHAEL F. BRABY1,2*, NAOMI E. PIERCE1 and ROGER VILA1† 1Department of Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street, Cambridge, MS 02138, USA 2School of Botany and Zoology, The Australian National University, Canberra, ACT 0200, Australia Received 13 July 2005; accepted for publication 1 May 2006 The Australian fauna is composed of several major biogeographical elements reflecting different spatial and tem- poral histories. Two groups of particular interest are the Gondwanan Element, reflecting an ancient origin in Gond- wana or southern Gondwana (southern vicariance hypothesis), and the Asian Element, reflecting a more recent origin in Asia, Eurasia or Laurasia (northern dispersal hypothesis). Theories regarding the origin and evolution of butterflies (Hesperioidea, Papilionoidea) in Australia are controversial, with no clear consensus. Here, we investigate the phylogenetic and historical biogeographical relationships of the subtribe Aporiina, a widespread taxon with dis- junct distributions in each of the major zoogeographical regions. Attention is paid to origins of the subtribe in the Australian Region for which several conflicting hypotheses have been proposed for the Old World genus Delias Hüb- ner. -
Appendix B10B
APPENDIX B10:B APPENDIX B: WILDLIFE ONLINE SEARCH RESULTS 75 SUNSHINE COAST AIRPORT EXPANSION PROJECT enVironMentaL IMpact stateMent B10:B-1 APPENDIX B10:B Wildlife Online Extract Search Criteria: Species List for a Specified Point Species: All Type: Native Status: All Records: All Date: All Latitude: 26.6043 Longitude: 153.0861 Distance: 5 Email: [email protected] Date submitted: Tuesday 28 Aug 2012 19:30:57 Date extracted: Tuesday 28 Aug 2012 19:40:03 The number of records retrieved = 1076 Disclaimer As the DERM is still in a process of collating and vetting data, it is possible the information given is not complete. The information provided should only be used for the project for which it was requested and it should be appropriately acknowledged as being derived from Wildlife Online when it is used. The State of Queensland does not invite reliance upon, nor accept responsibility for this information. Persons should satisfy themselves through independent means as to the accuracy and completeness of this information. No statements, representations or warranties are made about the accuracy or completeness of this information. The State of Queensland disclaims all responsibility for this information and all liability (including without limitation, liability in negligence) for all expenses, losses, damages and costs you may incur as a result of the information being inaccurate or incomplete in any way for any reason. Feedback about Wildlife Online should be emailed to [email protected] SUNSHINE COAST AIRPORT EXPANSION -
Ecology of Sydney Plant Species Part 5 Dicotyledon Families Flacourtiaceae to Myrsinaceae
330 Cunninghamia Vol. 5(2): 1997 M a c q u a r i e R i v e r e g n CC a Orange R Wyong g n i Gosford Bathurst d i Lithgow v Mt Tomah i Blayney D R. y r Windsor C t u a o b Oberon s e x r e s G k Penrith w a R Parramatta CT H i ve – Sydney r n a Abe e Liverpool rcro p m e b Botany Bay ie N R Camden iv Picton er er iv R y l l i Wollongong d n o l l o W N Berry NSW Nowra 050 Sydney kilometres Map of the Sydney region For the Ecology of Sydney Plant Species the Sydney region is defined as the Central Coast and Central Tablelands botanical subdivisions. Benson & McDougall, Ecology of Sydney plant species 5 331 Ecology of Sydney Plant Species Part 5 Dicotyledon families Flacourtiaceae to Myrsinaceae Doug Benson and Lyn McDougall Abstract Benson, Doug and McDougall, Lyn (National Herbarium of New South Wales, Royal Botanic Gardens, Sydney, Australia 2000) 1997 Ecology of Sydney Plant Species: Part 5 Dicotyledon families Flacourtiaceae to Myrsinaceae. Cunninghamia 5(2) 330 to 544. Ecological data in tabular form are provided on 297 plant species of the families Flacourtiaceae to Myrsinaceae, 223 native and 74 exotics, mostly naturalised, occurring in the Sydney region, defined by the Central Coast and Central Tablelands botanical subdivisions of New South Wales (approximately bounded by Lake Macquarie, Orange, Crookwell and Nowra). Relevant Local Government Areas are Auburn, Ashfield, Bankstown, Bathurst, Baulkham Hills, Blacktown, Blayney, Blue Mountains, Botany, Burwood, Cabonne, Camden, Campbelltown, Canterbury, Cessnock, Concord, Crookwell, Drummoyne, Evans, Fairfield, Greater Lithgow, Gosford, Hawkesbury, Holroyd, Hornsby, Hunters Hill, Hurstville, Kiama, Kogarah, Ku-Ring-Gai, Lake Macquarie, Lane Cove, Leichhardt, Liverpool, Manly, Marrickville, Mosman, Mulwaree, North Sydney, Oberon, Orange, Parramatta, Penrith, Pittwater, Randwick, Rockdale, Ryde, Rylstone, Shellharbour, Shoalhaven, Singleton, South Sydney, Strathfield, Sutherland, Sydney City, Warringah, Waverley, Willoughby, Wingecarribee, Wollondilly, Wollongong, Woollahra and Wyong. -
Résumé Abstract
FROM BUTTERFLY TO PROPELLER Igor S. Kovalev ∗1 1Science and Technology Laboratory, Kinneret College, Emek Hayarden, 15132, Israel Résumé Le potentiel de la "peau acoustique du papillon", en tant que nouvelle méthode de réduction du bruit aéroacoustique pour une hélice silencieuse, a été évalué. Ce sujet est particulièrement pertinent en raison de l'augmentation des hélices à usage civil comme militaire avec de multiples problèmes opérationnels. La réduction du bruit comme l'efficacité d’un système propulsif sont des aspects clés dans la conception des véhicules aériens avancés et peuvent très souvent conduire au succès ou à l'échec d'une mission. L'attention a été portée sur ce problème par l'observation des écailles poreuses de lépidoptères et de leurs propriétés de réduction du bruit : la couverture des mites permet à ces insectes de surmonter les attaques des chauves-souris la nuit. Ces appendices sont très petits (taille : 30 - 200 µm) et ont une structure poreuse différente. Bien que de nombreuses structures d’écailles poreuses de lépidoptères aient été discutées, seules les écailles poreuses des papillons Papilio nireus et Delias nigrina sont abordées ici. Deux conceptions de "peau acoustique de papillon" imitent les écailles creuses des ailes du papillon Papilio nireus (région creuse) et du papillon Delieas nigrina (région poreuse). Les résultats illustrent l'influence de structure de type "peau acoustique du papillon" sur les performances acoustiques d'une hélice à deux pales. Pour un nombre de Reynolds de 200000, la réduction du bruit d'une hélice en rotation type "peau acoustique de papillon" à région poreuse est de 4 dB, quand une hélice de type "peau acoustique de papillon" à région creuse est de 2 dB.