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2篇 您的检索式:作者名="Andrea J.SCOTT"
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1Top quark pair production at complete NLO accuracy with NNLO+NNLL′corrections in QCD显示文摘We describe predictions for top quark pair differential distributions at hadron colliders,by combining the next-to-next-to-leading order quantum chromodynamics calculations and next-to-leading order electroweak corrections with double resummation at the next-to-next-to-leading logarithmic accuracy of threshold logarithms and small-mass logarithms.To the best of our knowledge,this is the first study to present such a combination,which incorporates all known perturbative information.Numerical results are presented for the invariant-mass distribution,transverse-momentum distribution,and rapidity distributions.MichałCzakon Andrea Ferroglia Alexander Mitov Davide Pagani Andrew S.Papanastasiou Benjamin D.Pecjak Darren J.Scott Ioannis Tsinikos Xing Wang 杨李林 Marco Zaro 2020Chinese Physics C2020,44,8:1
2Shark scavenging behavior in the presence of competition显示文摘The distribution of organisms within a community can often be determined by the degree of plasticity or degree ofspecialization of resource acquisition. Resource acquisition is often based on the morphology of an organism, behavior, or a combinationof both. Performance tests of feeding can identify the possible interactions that allow one species to better exploit a preyitem. Scavenging behaviors in the presence or absence of a competitor were investigated by quantifying prey selection in a trophicgeneralist, spiny dogfish Squalus acanthias, and a trophic specialist, smooth-hounds Mustelus canis, in order to determine ifeach shark scavenged according to its jaw morphology. The diet of dogfish consists of small fishes, squid, ctenophores, and bivalves;they are expected to be nonselective predators. Smooth-hounds primarily feed on crustaceans; therefore, they are predictedto select crabs over other prey types. Prey selection was quantified by ranking each prey item according to the order it wasconsumed. Dietary shifts were analyzed by comparing the percentage of each prey item selected during solitary versus competitivescavenging. When scavenging alone, dogfish prefer herring and squid, which are easily handled by the cutting dentition ofdogfish. Dogfish shift their diet to include a greater number of prey types when scavenging with a competitor. Smooth-houndsscavenge on squid, herring, and shrimp when alone, but increase the number of crabs in the diet when scavenging competitively.Competition causes smooth-hounds to scavenge according to their jaw morphology and locomotor abilities, which enables themto feed on a specializedShannon P.GERRY Andrea J.SCOTT 2010Current Zoology2010,56,1:0
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