187,105 research outputs found
Rhyothemis phyllis phyllis (Sulzer
No full text9.Rhyothemis phyllis phyllis (Sulzer). Libellula phyllis Sulzer, Abgekurzte Gesch. cler Ins., 169, pl. 24, fig. 2, 1776. Rhyotheniis Phyllis (Sulzer) Hagen, Stett. Ent. Zeitung 28: 232, 1867. Rhyothemis Phyllis Phyllis (Sulzer) Fraser, Bombay Nat. Hist. SooJour. 26: 931, fig. 52, 1920; Fauna Brit. Incl., Odon. 3: 421, 1936. Agana swamp, May 4, Bryan, Usinger, May 25, Swezey; swamp 3 miles south of Piti, May 23, Usinger; Inarajan, June 8, Usinger. This species occurs in Burma, Java, Sumatra, and Borneo. Now recorded for the first time in Guam, where it was found in swampy regions but not common.Published as part of SWEZEY, O. H. & WILLIAMS, F. X., 1942, ODONATA, DRAGONFLIES OF GUAM, pp. 3-6 in Insects of Guam I, Honolulu, Hawaii :Bernice P. Bishop Museum, Bulletin 172 on page 5, DOI: 10.5281/zenodo.515951
Nicolas-Frédéric de Mulinen : Ancien Envoyer de la Ville et République de Berne
No full textSulzer pinx. ; P. Elie Bovet del
Alain Claude Sulzer: Täydellinen tarjoilija
No full textArvostelu teoksesta Alain Claude Sulzer: Täydellinen tarjoilija, suom. Olli Sarravaara, Lurra Editions, 2016.nonPeerReviewe
Proinsecticides effective against insecticide-resistant peach-potato aphid (Myzus persicae (Sulzer))
No full textA range of potential proinsecticides was synthesised and tested against insecticide-susceptible and -resistant clones of Myzus persicae (Sulzer). They were all esters of compounds known to be toxic or pharmacologically active, and were designed to have increased lipophilicity and to be subject to more rapid activation by hydrolysis in resistant than in susceptible aphids due to the increased amount of esterase present in the resistant clones. The most potent toxins were esters of monofluoroacetic acid. When applied topically, the toxicity of these esters to M. persicae was directly proportional to the esterase content of the aphids. Such compounds would not be suitable as commercial insecticides, but the results serve to illustrate the potential benefits of exploiting a resistance mechanism against one class of compounds to render another class more toxic, i.e. to design compounds that show negative cross-resistance. (C) 1998 SCI
Ventilation Efficiency Measurements in Sulzer Test Chamber
No full textMeasurements ith tracer gases were performed, together with more classical temperature and air velocity measurements, on various ventilation systems installed in the test chamber of Sulzer Infra, in Winterthur. The test chamber was arranged to simulate an office room, with heat generated form computers and occupants, Moreover, the contaminants from one occupant was simulated with a tracer gas. This document addresses the measurement of the age of the air and of the contaminant removal effectiveness at various locations.LESO-P
Sulzer, Johann Georg (1720–1779)
No full textSchütze SB. Sulzer, Johann Georg (1720–1779). In: Horn K-P, Kemnitz H, Marotzki W, Sandfuchs U, eds. Klinkhardt Lexikon Erziehungswissenschaft (KLE), Bd. 3. 1st ed. Bad Heilbrunn: Klinkhardt; 2011: 287-288
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Field-simulator study of insecticide resistance conferred by esterase-, MACE- and kdr-based mechanisms in the peach-potato aphid, Myzus persicae (Sulzer)
No full textInsecticide sprays were applied to Myzus persicae (Sulzer) populations carrying various combinations of three insecticide resistance mechanisms (esterase-based metabolic resistance and two target site mechanisms, known as MACE and kdr), supported on host plants growing in field simulator cages. The study showed that MACE confers extreme resistance to pirimicarb and triazamate (carbamate insecticides) but not to deltamethrin + heptenophos (16 + 1) (Decisquick) or dimethoate (an organophosphorus insecticide). Resistance to dimethoate depends solely on levels of esterase-based resistance, while resistance to Decisquick depends on kdr and esterase. None of the four insecticides is effective against aphids carrying MACE combined with extreme esterase-based resistance. This knowledge, in association with current monitoring of the mechanisms, will play an important role in making decisions on insecticide use against M persicae in the UK. (C) 1999 Society of Chemical Industry
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Optimum time to refurbish a boiler feed pump at Eskom's power stations
No full textA key focus area in power generation today is to improve equipment and plant efficiency, with this study specifically aimed to determine the optimum time to refurbish a boiler feed pump by analysing the internal wear of the annular seals. The boiler feed pump (BFP) installed in a power station is either driven by a steam turbine or an electric motor and the BFP is the highest auxiliary power consumer within the power station. In the 13 Eskom generating fossil fired power stations the installed BFPs consume approximately 1000 MWs of auxiliary power continuously. The focus of the study is to understand how the BFPs efficiency changes with time as a result of increased internal clearances and the effect this has on the auxiliary power consumption. An in-depth analysis of the efficiency degradation has been studied to understand the contributing factors to these changes and specifically the change in leakage rate and friction in the annular seals of the impellers and axial thrust balancing devices
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