72,486 research outputs found
Skolomystax Suter & Webb & Gattolliat 2023, n. gen.
No full textSkolomystax n. gen. LSID urn:lsid:zoobank.org:pub:8746565B-0421-4D37-8A7822C1AEAD6104 Type species: C. elongatum Suter 1986 Skolomystax elongatus (Suter, 1986) n.comb. by present designation Species composition: S. brevis n. sp., S. chionotos n. sp., S. collendus (Harker, 1957) n. comb., S. dyarrbi n. sp., S. elongatus (Suter, 1986) n. comb., S. gippslandicus n. sp., S. goorudensis n. sp., S. hawking n. sp., S. leichhardti n. sp., S. paschei n. sp., S. tasmaniensis n. sp., and S. vulgaris n. sp.Published as part of Suter, P. J., Webb, J. M. & Gattolliat, J. - L., 2023, Skolomystax, a new genus for the Australian species formerly included in Centroptilum Eaton (Ephemeroptera: Baetidae), pp. 1-48 in Memoirs of Museum Victoria (Mem. Mus. Vic.) (Mem. Mus. Vic.) 82 on page 6, DOI: 10.24199/j.mmv.2023.82.01, http://zenodo.org/record/806550
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
Webb, N E, 420726
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/424564Surname: WEBB. Given Name(s) or Initials: N E. Military Service Number or Last Known Location: 420726. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 54910.252506
Item: [2016.0049.56825] "Webb, N E, 420726
Skolomystax gippslandicus Suter & Webb & Gattolliat 2023, n. sp.
No full text<i>Skolomystax gippslandicus</i> n. sp. (figs. 10, 11, 25e) <p>u r n: l s i d: z o o b a n k. o r g: a c t: C 7 8 7 8 9 3 E - 3 F 4 3 - 4 3 C E 91E1-883992186247</p>Published as part of <i>Suter, P. J., Webb, J. M. & Gattolliat, J. - L., 2023, Skolomystax, a new genus for the Australian species formerly included in Centroptilum Eaton (Ephemeroptera: Baetidae), pp. 1-48 in Memoirs of Museum Victoria (Mem. Mus. Vic.) (Mem. Mus. Vic.) 82</i> on page 21, DOI: 10.24199/j.mmv.2023.82.01, <a href="http://zenodo.org/record/8065508">http://zenodo.org/record/8065508</a>
Anisakis nascettii (Nematoda: Anisakidae) from beaked whales of the southern hemisphere: morphological description, genetic relationships between congeners and ecological data
No full textA new anisakid nematode, Anisakis nascettii n. sp., is described from beaked whales Mesoplodon spp. off the coast of New Zealand and South Africa. Morphological and molecular (allozymes and mtDNA cox2 sequence) data were used for diagnostic and identification purposes. Among the 19 allozymes studied, 10 were found to be unique and characteristic for A. nascettii n. sp. Analysis of allozymes demonstrated reproductive isolation from A. ziphidarum Paggi, Nascetti, Webb, Mattiucci, Cianchi & Bullini, 1998 and mtDNA cox2 sequences depict this Anisakis species as a distinct and unique entity. Key morphological diagnostic traits for A. nascettii with respect to the genetically closely related species A. ziphidarum include: spicule length, the spicule/body length ratio, the arrangement of the caudal papillae and the shape of the plectanes of the adult males. Genetic data confirmed that Anisakis sp. A of Pontes et al. (2005), which was partly described by Iglesias et al. (2008), and Anisakis sp. of Valentini et al. (2006) are conspecific with A. nascettii. Both molecular and morphological data indicate that the new species belongs to the 'ziphidarum-group'; however, it is genetically very distinct from A. ziphidarum (D(Nei) = 0.69, K2P = 0.09), as well as from all of the previously genetically characterised Anisakis spp. All tree topologies inferred by different methods (MP, NJ and Bayesian) support the finding that A. nascettii n. sp. and A. ziphidarum are sister-species. It is also confirmed that A. nascettii n. sp. is, at the adult stage, a parasite of beaked whales of the genus Mesoplodon, whereas, as a larva, it has been identified from the squid Moroteuthis ingens Smith. Furthermore, Mesoplodon bowdoini Andrews represents a new host record for A. ziphidarum. The parallelism between the clade formed by these two anisakine taxa, i.e. A. ziphidarum and A. nascettii, and that formed by their definitive hosts further supports the hypothesis of host-parasite co-evolutionary relationships, as previously suggested for Anisakis spp. and their cetacean hosts
Single- and Multi-carrier Quadrature Amplitude Modulation: Principles and Applications for Personal Communications, WATM and Broadcasting: 2nd
No full textSingle- and Multi-carrier Quadrature Amplitude Modulation Principles and Applications for Personal Communications, WLANs and Broadcasting L. Hanzo Department of Electronics and Computer Science, University of Southampton, UK W. Webb Motorola, Arlington Heights, USA formerly at Multiple Access Communications Ltd, Southampton, UK T. Keller Ubinetics, Cambridge Technology Centre, Melbourn, UK formerly at Department of Electronics and Computer Science, University of Southampton, UK Motivated by the rapid evolution of wireless communication systems, this expanded second edition provides an overview of most major single- and multi-carrier Quadrature Amplitude Modulation (QAM) techniques commencing with simple QAM schemes for the uninitiated through to complex, rapidly-evolving areas, such as arrangements for wide-band mobile channels. Targeted at the more advanced reader, the multi-carrier modulation based second half of the book presents a research-orientated outlook using a variety of novel QAM-based arrangements. * Features six new chapters dealing with the complexities of multi-carrier modulation which has found applications ranging from Wireless Local Area Networks (WLAN) to Digital Video Broadcasting (DVB) * Provides a rudimentary introduction for readers requiring a background in the field of modulation and radio wave propagation * Discusses classic QAM transmission issues relevant to Gaussian channels * Examines QAM-based transmissions over mobile radio channels * Incorporates QAM-related orthogonal techniques, considers the spectral efficiency of QAM in cellular frequency re-use structures and presents a QAM-based speech communications system design study * Introduces Orthogonal Frequency Division Multiplexing (OFDM) over both Gaussian and wideband fading channels By providing an all-encompassing self-contained treatment of single- and multi- carrier QAM based communications, a wide range of readers including senior undergraduate and postgraduate students, practising engineers and researchers alike will all find the coverage of this book attractive
Skolomystax paschei Suter & Webb & Gattolliat 2023, n. sp.
No full textSkolomystax paschei n. sp. (figs. 19, 20, 25i) u r n: l s i d: z o o b a n k. o r g: a c t: F B1 B E 4 F 7 - 8 7 2 2 - 4 B C B 931C-908400447643 Material examined. Holotype: nymph mounted on slides. NSW: MacLaughlin R, JWAANIC1, 36.65S 149.11E, 19 Dec 1974 EFR, ANIC 6–000079. Paratypes: three nymphs mounted on slides. NSW: MacLaughlin R, JWAANIC2, 36.65S 149.11E, 23 Oct 1965, EFR, ANIC 6–000080; Bobundara Ck on Maffra Rd, JWA1431, 36.49S 148.99E, 19 Dec 1974, EFR, ANIC 6–000081; MacLaughlin R at Monaro Highway, south of Nimmitabel, JWA1632, 36.5722S 149.2847E, 29 Mar 2009, ANIC 6–000082.Published as part of Suter, P. J., Webb, J. M. & Gattolliat, J. - L., 2023, Skolomystax, a new genus for the Australian species formerly included in Centroptilum Eaton (Ephemeroptera: Baetidae), pp. 1-48 in Memoirs of Museum Victoria (Mem. Mus. Vic.) (Mem. Mus. Vic.) 82 on page 35, DOI: 10.24199/j.mmv.2023.82.01, http://zenodo.org/record/806550
Nitric oxide signaling in pseudomonas aeruginosa biofilms mediates phosphodiesterase activity, decreased cyclic Di-GMP levels, and enhanced dispersal
No full textBacteria in biofilms often undergo active dispersal events and revert to a free-swimming, planktonic state to complete the biofilm life cycle. The signaling molecule nitric oxide (NO) was previously found to trigger biofilm dispersal in the opportunistic pathogen Pseudomonas aeruginosa at low, nontoxic concentrations (N. Barraud, D. J. Hassett, S. H. Hwang, S. A. Rice, S. Kjelleberg, and J. S. Webb, J. Bacteriol. 188:7344-7353, 2006). NO was further shown to increase cell motility and susceptibility to antimicrobials. Recently, numerous studies revealed that increased degradation of the secondary messenger cyclic di-GMP (c-di-GMP) by specific phosphodiesterases (PDEs) triggers a planktonic mode of growth in eubacteria. In this study, the potential link between NO and c-di-GMP signaling was investigated by performing (i) PDE inhibitor studies, (ii) enzymatic assays to measure PDE activity, and (iii) direct quantification of intracellular c-di-GMP levels. The results suggest a role for c-di-GMP signaling in triggering the biofilm dispersal event induced by NO, as dispersal requires PDE activity and addition of NO stimulates PDE and induces the concomitant decrease in intracellular c-di-GMP levels in P. aeruginosa. Furthermore, gene expression studies indicated global responses to low, nontoxic levels of NO in P. aeruginosa biofilms, including upregulation of genes involved in motility and energy metabolism and downregulation of adhesins and virulence factors. Finally, site-directed mutagenesis of candidate genes and physiological characterization of the corresponding mutant strains uncovered that the chemotaxis transducer BdlA is involved in the biofilm dispersal response induced by NO
Sumangala indica Zelazny & Webb 2011, sp. nov.
No full textSumangala indica Zelazny, sp. nov. (Figs. 111, 345) Description. Forewings broad, 1.7 times longer than wide, length: male 3.6–4.6 mm (mean = 4.1, n = 9), female 4.1–5.1 mm (mean = 4.4, n = 5). Colour stramineous, tibiae and tarsi tinted with brown. Forewings white, powdered; veins narrowly lined with light infuscation except for claval veins and vein sections near apical and costal margin; veins of same colour. In some specimens (but not the holotype) veins in basal quarter of forewings not lined with infuscation. Hindwings colourless. Rostrum reaching hind coxae. Genitalia of male with pygofer narrow. Genital styles oval; proximal dorsal process short and slender; distal dorsal process long, slightly widening towards tip. Aedeagus short, stem slightly widening before apical part, apical part ending in two round and flat lobes which are separated. Etymology. The species name is a Latin adjective (indicus, -a, -um = Indian). Type material. Holotype ♂ (forewing 3.8 mm), INDIA; labels: 1) Kodai Kanal./ S. India,/ T. V. Cambell 2) Brit. Mus./ 1926-171 (BMNH). Paratypes. INDIA (S): Madras, Coonoor, 2 ♀ (fw. 4.1, 4.7), T. V. Campbell; same data as holotype 8 ♂ (fw. 3.6, 3.9, 4.1, 3x4.3, 4.4, 4.6) 4 ♀ (fw. 4.1, 4.4, 4.6, 5.1) (all BMNH). Distribution. Southern India. Diagnosis. Sumangala indica is characterized by most forewing veins being narrowly lined with infuscation, and by the body lacking any red or orange marks.Published as part of Zelazny, B. & Webb, M. D., 2011, 3071, pp. 1-307 in Zootaxa 3071 on pages 185-18
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