50,420 research outputs found
Unionicola (Hexatax) nearctica Crowell & Davids 1979
No full textUnionicola (Hexatax) nearctica Crowell & Davids, 1979 Report associated with sponges: This species was reported as sponge-associated mite in the Laurentian Great Lakes and St. Lawrence River basins, North America (Crowell & Davids 1979). This species was mentioned by Crowell (1990) as developmentally associated with freshwater sponges in the Northern Hemisphere. This species was also mentioned under possible ‘sponge-mite’ species in North America (Vidrine 1996; Edwards & Vidrine 2013). Remarks: This species belongs to ‘ U. crassipes —complex’. It needs further study (emphasizing on developmental study) of this mite to get better idea about association with freshwater sponges. Crowell & Davids (1979) stated “The distinctiveness of the North American U. crassipes- like mites makes it necessary to re-evaluate the records of those mites. The mites reported by Conroy (1974) were undoubtedly U. nearctica ”. [The paper presented by Conroy (1974) in IV International congress of Acarologie,Saalfelden, Austria, 1974 was published as Proceedings in 1979 and referred as Conroy, J.C. (1979)]. Crowell & Davids (1979) also commented: “The records of Wolcott (1899) and materials in the Ruth Marshall Collection appear to be a mixture of U. laurentiana and U. nearctica ”.Published as part of Chatterjee, Tapas, 2021, A checklist of halacarid and hydrachnid mites (Acari, Halacaridae & Hydrachnidia) associated with sponges (Porifera), pp. 101-129 in Zootaxa 5072 (2) on page 116, DOI: 10.11646/zootaxa.5072.2.1, http://zenodo.org/record/573365
Three Kinds of Disambiguated Author ID Systems for PubMed 2019
No full textAuthor identifier (ID) is essential for many downstream tasks, such as co-author network and scientist mobility analysis. As a widely used bibliometrics database, author ID of PubMed is not officially provided by National Institutes of Health (NIH), that restrict bibliometric research. This study exploited three open bibliographic databases Aminer, Microsoft Academic Graph (MAG) and Semantic Scholar (S2) to associate author ID for PubMed. For this purpose, paper linking and author linking was performed sequencely to mine paper and author links between PubMed and these databases. Performance of author name disambiguation (AND) of there available identifiers was evaluated on two AND datasets. Our findings suggested that, S2 contains full volume of PubMed regarding link completeness. With respect to correctness of author ID, S2 and MAG achieved better performance than Aminer. The best F1 score on both dataset of there available identifiers is below 90\%, indicate that AND for large scale database remain as a difficult task and the need for further improvement. We made the final dataset that contains linked paper and author of PubMed publicly available for facilitating future research
Unionicola (Hexatax) laurentiana Crowell & Davids 1979
No full textUnionicola (Hexatax) laurentiana Crowell & Davids, 1979 (See synonyms given in Vidrine 1996)) Report associated with sponges: This species was reported among sponge Spongilla lacustris from North America (Crowell & Davids 1979). This species was also reported associated with sponges Dosilia radiospiculata, Trochospongilla horrida, T. Pennsylvanica, and T. leidii from Louisina, Louisiana, North America (Vidrine et al.1986; Vidrine 1996). Remarks: This was reported from encysted stages in the mussel (in suprabranchial chamber) Anodonta (= Pyganodon) grandis (Say, 1829) from Louisiana, North America (Vidrine et al. 1986). Molluscan hosts with mites in the mantle cavity: Amblem aplicata Say, 1871, Disconaias fimbriata (Frierson, 1907), Elliptio crassidens (Lamarck, 1819), Fusconaia askewi (Marsh, 1896), Lampsilis hydiana (Lea, 1838), Lampsilis teres (Rafinesque, 1820), Potamilus fragilis, (Rafinesque, 1820), Sagittunio subrostrata (Say, 1831), Nephronaias sp., Popenaias berezai Inoue et al. 2020, Popenaias popei (Lea, 1857), Pyganodon fragilis (Lamarck, 1819), P. grandis, Quadrula quadrula (Rafinesque, 1820), Cyclonaia spustulosa (Lea, 1831), Sphaerium simile (Say, 1817), Toxolasma parvus (Barnes, 1823), Tritogonia verrucosa (Rafinesque, 1820), Uniomerus tetralasmus (Say, 1831), and Leauniolienosus calliginosus (Lea, 1845) from Canada, Mexico, and USA, North America (Vidrine 1996; Edwards & Vidrine 2013).The mussel names have been updated to match current taxonomic treatments (see Vidrine 2019, Vidrine & Edwards 2021). Crowell & Davids (1979) also commented: ‘The records of Wolcott (1899) and materials in the Ruth Marshall Collection appear to be a mixture of U. laurentiana and U. nearctica’. Also, the U. crassipes used in their molecular study was actually U. laurentiana (Edwards et al. 2010).Published as part of Chatterjee, Tapas, 2021, A checklist of halacarid and hydrachnid mites (Acari, Halacaridae & Hydrachnidia) associated with sponges (Porifera), pp. 101-129 in Zootaxa 5072 (2) on page 115, DOI: 10.11646/zootaxa.5072.2.1, http://zenodo.org/record/573365
Die sogenannte Thronfolgegeschichte Davids: neue Einsichten und Anfragen
No full textIn der Geschichte der alttestamentlichen Forschung im 20. Jahrhundert stellt die These von der sogenannten Thronfolgegeschichte Davids sowohl einen Meilen- als auch einen Prüfstein dar. Leonhard Rost identifizierte in 2 Sam 9-20 und 1 Kön 1-2 das Thema der je und je verzögerten Thronfolge als literarischen Leitfaden der Erzählung und machte dadurch den Blick frei für ein kohärentes, als solches bis dahin unerkannt gebliebenes Erzählwerk der frühen Königszeit.
In den letzten Jahrzehnten ist besonders im Nachhall zur Pentateuchkrise auch die Rost’sche These der Thronfolgegeschichte nicht unverschont geblieben. Die Idee eines Geschichtswerks aus dem 10. Jh. v. Chr. erscheint heute vielen als ein unmögliches Postulat, und die literarische Selbstständigkeit der Thronnachfolgeerzählung wird mehr und mehr in Frage gestellt. Im Gefolge eines von der Schweizerischen Gesellschaft für orientalische Altertumswissenschaft im Februar 1997 in Bern veranstalteten Symposions stellen im vorliegenden Band namhafte Exegeten (E. Blum, W. Dietrich, O. Kaiser, S.L. McKenzie, Th. Naumann und J. Van Seters) ihre Interpretationen der Thronnachfolge Davids zur Diskussion. Ihre methodisch wie inhaltlich divergierenden Beiträge verdeutlichen die wesentlichen Optionen der gegenwärtigen Forschung zum Thema
Sustainability-driven entrepreneurship and high-growth SME: How to combine Davids’ and Goliaths’ worlds?
No full textInternational audienceThis paper aims to explore how sustainability-driven SMEs experiencing high growth can succeed in combining the best of the Davids’ and Goliaths’ worlds. An in-depth case study was conducted within a French SME, a pioneer in organic vegetable distribution that has succeeded in evolving from an ‘idealistic David’ to a ‘high-growth David’. Research findings reveal two sets of key actions successfully carried out by this firm: the development of a hybrid organisation through a staff representing the skills of both Davids’ and Goliaths’ worlds, and of a learning organisation through exploration and exploitation. They also illustrate some challenges facing most high-growth SMEs and identify some specific tensions that can arise due to the coexistence of these two worlds, in particular value diversity within the top management team
Researcher ID Workshop
No full textPapers presented at the Researcher ID Workshop, Auditorium, Merensky Library, University of Pretoria, 22 July 2015The workshop aimed to share ideas and knowledge on author visibility within the research industry. Presentations, discussions and training sessions focussed on the different IDs such as ORCID, Researcher ID, Scopus Author ID and others. Using these tools to manage and share your professional profile & publications. During the session attention was given to the following areas: The Role of the Information specialist; Real examples of how Information Specialists are involved with author IDs; Sharing of ideas and experiences thus far; Practical training with Melissa Badenhorst on Researcher ID; and Lucia Schoombee from Elsevier.mn201
Khulisa carolinae Boonzaaier-Davids & Florence & Gibbons 2020, n. sp.
No full textKhulisa carolinae n. sp. (Fig. 6 A–F, Table 5) zoobank.org/ 5B434129-D151-4297-AB70-13ED3170188C Material examined. Holotype: SAMC-A029002 (in ethanol), station TRA 31 (34°49’S, 20°21.5’E), off Arniston, South Coast, South Africa, UCT Ecological Survey, trawl, depth 86 m, 9 September 1947. Additional material: SAMC-A 077262 (in ethanol), FAL 330. Additional comparative material: Cribrilina simplex, NHMUK 1963.3.20.2 (part of type), No. 27G, Still Bay, South Coast, South Africa, UCT Ecological Survey, 5 January 1932, no additional information. Cribrilaria africana, NHMUK 1983.11.5.75 (paratype), station SM 164 (33°04.6’S, 28°06.6’E), off East London, Southeast Coast, South Africa, RV Meiring Naude Survey, heavy dredge, depth 90 m, 26 May 1978. Cribrilaria innominata, SAMC-A 026567, station SM 163 (33°04.6’S, 28°06.6’E), off East London, Southeast Coast, South Africa, heavy dredge, depth 90 m, 26 May 1978. Etymology. Named after the first author’s grandmother, ‘Ouma’ Caroline Keet (née Abrahams) (b. 1933). She deeply invested in her children’s education during the difficult circumstances of the ‘Apartheid’ Era; the strong role she plays in her family is hereby acknowledged. Diagnosis. See genus. Description. Colony encrusting; colour creamy white and translucent in ethanol preserved material. Zooids closely juxtaposed with vertical walls directly abutting each other. Autozooid elliptical to subrectangular, about 0.66 mm long by 0.42 mm wide; frontal shield composed of seven to ten pairs of costae, flat to slightly convex, gymnocystal margin extremely reduced; three to four rounded intercostal lacunae aligned in rows on each side, fused completely along the mid-line where tips of the costae meet, sometimes forming an additional small lacuna. Orifice wider than long, deep semicircular, smooth edged; a thick, overarching apertural bar obscuring the primary orifice; secondary orifice with a U-shaped pseudo-sinus (V-shaped in giant dimorphic zooids) formed by a pair of projections close to the midline of the costae forming the apertural bar. Dimorphic zooids interpreted as brooding zooids, same shape and structure as ordinary autozooids but larger, about 1.27 mm long by 0.69 mm wide (N T = 1), scattered throughout the colony; three to nine rounded intercostal lacunae on each side. Interzooidal avicularia spatulate, about 0.52 mm long by 0.18 mm wide (N T = 2), scattered throughout the colony; rostrum raised and cup-like. Interzooidal communication through uniporous mural septula. No apparent ovicells or ooecia, brooding presumably taking place in dimorphic zooids. Ancestrula not observed. Remarks. Three known species of Cribrilinidae were previously described from South Africa: Cribrilina simplex O’Donoghue & de Watteville, 1935, C. dispersa O’Donoghue & de Watteville, 1937, and Cribrilaria africana Hayward & Cook, 1983. The widespread C. innominata (Couch, 1844) has also been reported from this region (Hayward & Cook 1983). Khulisa carolinae n. gen. et n. sp. differs in several features from all the above-mentioned species (see also Remarks for the genus). Khulisa carolinae n. gen et n. sp. forms encrusting patches on hard substrata including bryozoans, for example Reteporella sp. It was sampled near Arniston and False Bay, east of Smitswinkel Bay, on the South Coast, at 51–86 m depth.Published as part of Boonzaaier-Davids, Melissa K., Florence, Wayne K. & Gibbons, Mark J., 2020, Novel taxa of Cheilostomata Bryozoa discovered in the historical backlogs of the Iziko South African Museum, pp. 105-133 in Zootaxa 4820 (1) on pages 116-118, DOI: 10.11646/zootaxa.4820.1.5, http://zenodo.org/record/439737
Hydrachna papilligera K. Viets 1919
No full textHydrachna papilligera K. Viets, 1919 Species incerta Material examined: Holotype deutonymph SMF 941, Germany, Braunschweig, Teich bei Weddel, 8.7. 1910 Kühne. Discussion: This species was described from a single deutonymph. Later, the author himself proposed its synonymy to H. skorikowi (see K. Viets 1936). In view of the difficulties of associating nymphs to conspecific adults, it must be considered a species incerta.Published as part of Davids, Kees, Sabatino, Antonio Di, Gerecke, Reinhard, Gledhill, Terence & Smit, Harry, 2005, On the taxonomy of water mites (Acari: Hydrachnidia) described from the Palaearctic, part 1: Hydrachnidae, Limnocharidae and Eylaidae, pp. 36-64 in Zootaxa 1061 on page 48, DOI: 10.5281/zenodo.17018
TAF-ID: An international thermodynamic database for nuclear fuels applications
No full textThe Thermodynamics of Advanced Fuels – International Database (TAF-ID) was developed using the Calphad method to provide a computational tool to perform thermodynamic calculations on nuclear fuel materials under normal and off-normal conditions. Different kinds of fuels are considered: oxide, metallic, carbide and nitride fuels. Many fission products are introduced as well as structural materials (e.g., zirconium, steel, concrete, SiC) and absorbers (e.g., B4C), in order to investigate the thermochemistry of irradiated fuels and to predict their chemical interaction with the surrounding materials. The approach to develop the database and the models implemented in the database are described. Examples of models for key chemical systems are presented. Finally, a few examples of application calculations on severe accidents with UO2 fuels, irradiated fuel chemistry of MOX and metallic fuels and metallic fuel/cladding interaction show how this tool can be used. To validate the database, the calculations are compared to the available experimental data. A good agreement is obtained which gives confidence in the maturity degree and quality of the TAF-ID database. The working version is only accessible to the participants of the TAF-ID project (Canada, France, Japan, the Netherlands, Republic of Korea, United Kingdom, USA). A public version is accessible by all the NEA countries. The current version contains models on the Am–Fe, Am–Np, Am-O-Pu, Am–U, Am–Zr, C–O–U-Pu, Cr–U, Np–U, Np–Zr, O–U–Zr, Re–U, Ru–U, Si–U, Ti–U, U-Pu-Zr, U–W systems. It is progressively extended with our published assessments. Information on how to join the project is available on the website: https://www.oecd-nea.org/science/taf-id/.Accepted Author ManuscriptRST/Reactor Physics and Nuclear Material
Novel taxa of Cheilostomata Bryozoa discovered in the historical backlogs of the Iziko South African Museum
No full textBoonzaaier-Davids, Melissa K., Florence, Wayne K., Gibbons, Mark J. (2020): Novel taxa of Cheilostomata Bryozoa discovered in the historical backlogs of the Iziko South African Museum. Zootaxa 4820 (1): 105-133, DOI: https://doi.org/10.11646/zootaxa.4820.1.
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