1,722,097 research outputs found
New records of Bembecinus COSTA 1859 (Hymenoptera, Crabronidae) from the Palaearctic region with description of a new species from Yemen
No full textSchmid, C. (2009): New records of Bembecinus COSTA 1859 (Hymenoptera, Crabronidae) from the Palaearctic region with description of a new species from Yemen. Linzer biologische Beiträge 41 (1): 759-766, DOI: 10.5281/zenodo.527627
Failure of fluorocarbon copolymer pipes subjected to mechanical strain in an alkaline environment
Full text linkA failure analysis was carried out on leaking fluorocarbon-based copolymer pipes used in a cleaning and disinfection plant. Pipes conveyed a solution of sodium hydroxide and showed leaking after two months of service. Leaks originated from reddish-colored cuts located on the bending curves of the external surface of the pipes. Experimental findings and literature review pointed out that a combined effect of chemical degradation and mechanical strain (similar to stress corrosion cracking) triggered the failure. This type of degradation developed in high pH hydroxide solution due to dehydrofluorination of the exposed surface, starting material embrittlement and formation of crazes and microcracks. An applied mechanical deformation accelerated the crack opening and the solvent diffusion, up to the consequent pipe leaking and failure
Lasioglossum limbellum
No full textLasioglossum limbellum (MORAWITZ, 1876) M a t e r i a l: Vils 1 02.07.2006 A n m e r k u n g: DiewärmeliebendeArtwirdnördlichderAlpenrechtseltengefunden. Der Fund im Untersuchungsgebiet ist höchst bemerkenswert.Published as part of Schmid, C., 2011, Die Stechimmenfauna (Hymenoptera Aculeata) im Naturpark Tiroler Lech in Österreich, pp. 549-563 in Linzer biologische Beiträge 43 (1) on page 553, DOI: 10.5281/zenodo.532474
Abb. 2 in Die Stechimmenfauna (Hymenoptera Aculeata) im Naturpark Tiroler Lech in Österreich
No full textAbb. 2: Die parasitische Grabwespe Nysson ganglbaueri, hier ein Weibchen, ist ausschliesslich alpin verbreitet und wird sehr selten gefunden.Published as part of Schmid, C., 2011, Die Stechimmenfauna (Hymenoptera Aculeata) im Naturpark Tiroler Lech in Österreich, pp. 549-563 in Linzer biologische Beiträge 43 (1) on page 563, DOI: 10.5281/zenodo.532474
Abb. 3 in Die Stechimmenfauna (Hymenoptera Aculeata) im Naturpark Tiroler Lech in Österreich
No full textAbb. 3: Celonites abbreviatus, hier ein Männchen, ist eine in Südeuropa weit verbreitete Honigwespenart, die nördlich der Alpen nur sehr punktuell auftritt. Foto H. Bellmann.Published as part of Schmid, C., 2011, Die Stechimmenfauna (Hymenoptera Aculeata) im Naturpark Tiroler Lech in Österreich, pp. 549-563 in Linzer biologische Beiträge 43 (1) on page 563, DOI: 10.5281/zenodo.532474
Colletes graeffei ALFKEN 1900, neu für die Fauna von Italien (Apidae, Colletinae)
No full textSchmid, C., Kuhlmann, M. (2008): Colletes graeffei ALFKEN 1900, neu für die Fauna von Italien (Apidae, Colletinae). Linzer biologische Beiträge 40 (2): 1867-1871, DOI: http://doi.org/10.5281/zenodo.543182
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Dryudella femoralis
No full textDryudella femoralis (MOCSÁRY 1877) M a t e r i a l: Forchach 1 23.06.2006. A n m e r k u n g Dryudella femoralis ist vor allem alpin verbreitet. Darüber hinaus gibt es vereinzelte Nachweise in einigen deutschen Mittelgebirgen wie dem Bayerischen Wald oder der Rhön.Published as part of Schmid, C., 2011, Die Stechimmenfauna (Hymenoptera Aculeata) im Naturpark Tiroler Lech in Österreich, pp. 549-563 in Linzer biologische Beiträge 43 (1) on page 555, DOI: 10.5281/zenodo.532474
Lasioglossum bavaricum
No full textLasioglossum bavaricum (BLÜTHGEN 1930) M a t e r i a l: Forchach 1 23.06.2006, Pinswang 1 23.06.2006. A n m e r k u n g Lasioglossum bavaricum ist ebenfalls eine alpin verbreitete Art der Hochlagen.Published as part of Schmid, C., 2011, Die Stechimmenfauna (Hymenoptera Aculeata) im Naturpark Tiroler Lech in Österreich, pp. 549-563 in Linzer biologische Beiträge 43 (1) on page 552, DOI: 10.5281/zenodo.532474
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