241 research outputs found

    Pulswing. Ontwikkeling van een vistuig voor platvis waarin pulstechniek met de SumWing is gecombineerd

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    By integration of pulse-technique in SumWing gear (“flat beam”) a new, working and marketable pulsewing fishing gear model has been developed. This as an alternative gear for beam trawl, specifically suitable for catching sole. Economic results of pulsewing seems to be better than the results of using beam trawl and SumWing and impact on ecology is considerably less. Compared to beam trawl, less fish was landed and a lower revenues were realised per day at sea, but less fuel consumption and as a result of that lower costs shows better margins to pay other costs. Fuel consumption related to landed fish (per kilogram) shows also lower figures. In this report just calculations are made for fishing vessels of 2.000 hp. Till 2011 no smaller vessels (Eurocutters, 300 hp) were active with pulsewing fishing gear

    Visserij in Cijfers 2007

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    Deze jaarlijkse rapportage over de Nederlandse visserij bevat gegevens over de be-drijfsresultaten en financiële positie van de kottervisserij in 2006 met ramingen voor 2007, met vergelijkende cijfers van voorgaande jaren. Naast de bedrijfseconomische gegevens van de kottervisserij, wordt ook ingegaan op resultaten van de grote zeevis-serij, de mosselcultuur, belangrijke onderdelen van de visteeltsector en daarnaast ook ontwikkelingen in de buitenlandse handel in visproducten. This annual report on Dutch fisheries contains data on the business results and the fi-nancial position of cutter fishing in 2006 and an outlook for 2007, with comparative figures from previous years. Alongside the economic data of cutter fishing, results of large-scale high sea fishing, mollusc culture, some most important parts of aquaculture sector and developments in foreign trade of fishery products are also examined

    Ecotoxicological models for Dutch environmental policy: Models to be addressed in the Stimulation Program Systems-Oriented Ecotoxicological Research (NWO/SSEO)

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    Contains fulltext : 32440.pdf (publisher's version ) (Open Access)91 p

    Visserij in cijfers 2004

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    Deze jaarlijkse rapportage over de Nederlandse visserij bevat gegevens over de bedrijfsresultaten en financiële positie van de kottervisserij in 2004, met vergelijkende cijfers van voorgaande jaren. Naast de bedrijfseconomische gegevens van de kottervisserij, wordt ook ingegaan op resultaten van de grote zeevisserij en op ontwikkelingen in de buitenlandse handel. This annual report on Dutch fisheries contains data on the business results and the financial position of cutter fishing in 2004, with comparative figures from previous years. Alongside the economic data of cutter fishing, results of large-scale high sea fishing and developments in foreign trade are also examined

    Visserij in Cijfers 2002

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    Deze jaarlijkse rapportage over de Nederlandse visserij bevat gegevens over de be-drijfsresultaten en financiële positie van de kottervisserij in 2002 met vergelijkende cijfers van voorgaande jaren. De opbrengst van de totale Nederlandse zee- en kustvisserij daalde met 51 mil-joen euro naar 463 miljoen euro in 2002. De daling kwam voor het grootste deel voor rekening van de Noordzee-kottervloot die de opbrengst zag dalen met 17%. Het netto-resultaat kwam negatief uit op 4 miljoen euro. Na een relatief gunstig 2001 en een lange periode met positieve resultaten is 2002 daarmee een slecht jaar geworden. De opbrengst in de grote zeevisserij steeg met bijna 6% naar 126 miljoen euro. Door hoge kosten kwam ook dit onderdeel van de vloot netto op een negatief resultaat uit van 11 miljoen euro. Voor de kottervisserij als geheel kwam het eigen vermogen begin 2002 uit op ongeveer 42% van het totaal balansvermogen. Dat was een verbetering ten op-zichte van begin 2001 toen de solvabiliteit nog 35% bedroeg. De aanvoer van mosselen kwam het afgelopen seizoen uit op 48 miljoen kilo-gram. Een lichte stijging van 15% ten opzichte van het magere aanvoerseizoen 2001/2002

    Visserij in cijfers 2003

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    Deze jaarlijkse rapportage over de Nederlandse visserij bevat gegevens over de bedrijfsresultaten en financiële positie van de kottervisserij in 2003, met vergelijkende cijfers van voorgaande jaren. Naast de bedrijfseconomische gegevens van de kottervisserij, wordt ook ingegaan op resultaten van de grote zeevisserij en op ontwikkelingen in de buitenlandse handel. This annual report on Dutch fisheries contains data on the business results and the financial position of cutter fishing in 2003, with comparative figures from previous years. Alongside the economic data of cutter fishing, results of large-scale high sea fishing and developments in foreign trade are also examined

    Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in √s = 7 TeV pp collisions with the ATLAS detector

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    A search for the direct production of charginos and neutralinos in final states with three electrons or muons and missing transverse momentum is presented. The analysis is based on 4.7 fb−1 of proton–proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with Standard Model expectations in three signal regions that are either depleted or enriched in Z-boson decays. Upper limits at 95% confidence level are set in R-parity conserving phenomenological minimal supersymmetric models and in simplified models, significantly extending previous results

    Jet size dependence of single jet suppression in lead-lead collisions at sqrt(s(NN)) = 2.76 TeV with the ATLAS detector at the LHC

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    Measurements of inclusive jet suppression in heavy ion collisions at the LHC provide direct sensitivity to the physics of jet quenching. In a sample of lead-lead collisions at sqrt(s) = 2.76 TeV corresponding to an integrated luminosity of approximately 7 inverse microbarns, ATLAS has measured jets with a calorimeter over the pseudorapidity interval |eta| < 2.1 and over the transverse momentum range 38 < pT < 210 GeV. Jets were reconstructed using the anti-kt algorithm with values for the distance parameter that determines the nominal jet radius of R = 0.2, 0.3, 0.4 and 0.5. The centrality dependence of the jet yield is characterized by the jet "central-to-peripheral ratio," Rcp. Jet production is found to be suppressed by approximately a factor of two in the 10% most central collisions relative to peripheral collisions. Rcp varies smoothly with centrality as characterized by the number of participating nucleons. The observed suppression is only weakly dependent on jet radius and transverse momentum. These results provide the first direct measurement of inclusive jet suppression in heavy ion collisions and complement previous measurements of dijet transverse energy imbalance at the LHC.Comment: 15 pages plus author list (30 pages total), 8 figures, 2 tables, submitted to Physics Letters B. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2011-02

    Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at sqrt(s) = 7 TeV with the ATLAS experiment

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    This paper describes an analysis of the angular distribution of W->enu and W->munu decays, using data from pp collisions at sqrt(s) = 7 TeV recorded with the ATLAS detector at the LHC in 2010, corresponding to an integrated luminosity of about 35 pb^-1. Using the decay lepton transverse momentum and the missing transverse energy, the W decay angular distribution projected onto the transverse plane is obtained and analysed in terms of helicity fractions f0, fL and fR over two ranges of W transverse momentum (ptw): 35 < ptw < 50 GeV and ptw > 50 GeV. Good agreement is found with theoretical predictions. For ptw > 50 GeV, the values of f0 and fL-fR, averaged over charge and lepton flavour, are measured to be : f0 = 0.127 +/- 0.030 +/- 0.108 and fL-fR = 0.252 +/- 0.017 +/- 0.030, where the first uncertainties are statistical, and the second include all systematic effects.Comment: 19 pages plus author list (34 pages total), 9 figures, 11 tables, revised author list, matches European Journal of Physics C versio

    Observation of a new chi_b state in radiative transitions to Upsilon(1S) and Upsilon(2S) at ATLAS

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    The chi_b(nP) quarkonium states are produced in proton-proton collisions at the Large Hadron Collider (LHC) at sqrt(s) = 7 TeV and recorded by the ATLAS detector. Using a data sample corresponding to an integrated luminosity of 4.4 fb^-1, these states are reconstructed through their radiative decays to Upsilon(1S,2S) with Upsilon->mu+mu-. In addition to the mass peaks corresponding to the decay modes chi_b(1P,2P)->Upsilon(1S)gamma, a new structure centered at a mass of 10.530+/-0.005 (stat.)+/-0.009 (syst.) GeV is also observed, in both the Upsilon(1S)gamma and Upsilon(2S)gamma decay modes. This is interpreted as the chi_b(3P) system.Comment: 5 pages plus author list (18 pages total), 2 figures, 1 table, corrected author list, matches final version in Physical Review Letter
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