LABORATORY AND FIELD STUDIES WITH AN AVIAN REPELLENT FOR SPROUTING SEEDS

Development of safe bird management techniques has become necessary for the economic survival of many parameters of agriculture. Competition between man and birds for resources has always occurred but has become increasingly complex as the human population increased. As man\u27s demand for additional food and fiber has required more intensive cultivation of arable land, certain birds have caused in¬creasingly costly losses. Bird damage has become so severe in some areas that till¬age of certain crops is threatened. In some situations, troublesome bird populations can be reduced to tolerable levels; however, the primary objective of bird management should be the alleviation of damage to crops and not destruction of birds. All birds possess beneficial qualities and federal or state laws protect most species. To avoid killing birds and still reduce bird damage to agricultural production, the potentially most useful approach to bird management is the development of non-toxic repellents. DRC-3324, a butyramide, is a chemical example of this approach to bird management. It was initially examined under laboratory conditions by Denver Wild¬life Research Center scientists following suggestion of candidacy for this purpose by Upjohn personnel. The chemical met all major criteria established for judging the relative potential of compounds for repellent purposes: the effective concentration was very low; the toxic concentration was substantially greater than the repellent level; it was relatively non-toxic to mammals; and was not phytotoxic to corn seed. The objective of these trials was to evaluate the effectiveness of the chemical under field conditions as a deterrent to red-winged blackbirds (Agelaius phoeniceus) and common grackles (Quiscalus quiscula) damaging freshly planted sweet-corn seed

LABORATORY AND FIELD STUDIES WITH AN AVIAN REPELLENT FOR SPROUTING SEEDS

Development of safe bird management techniques has become necessary for the economic survival of many parameters of agriculture. Competition between man and birds for resources has always occurred but has become increasingly complex as the human population increased. As man\u27s demand for additional food and fiber has required more intensive cultivation of arable land, certain birds have caused in¬creasingly costly losses. Bird damage has become so severe in some areas that till¬age of certain crops is threatened. In some situations, troublesome bird populations can be reduced to tolerable levels; however, the primary objective of bird management should be the alleviation of damage to crops and not destruction of birds. All birds possess beneficial qualities and federal or state laws protect most species. To avoid killing birds and still reduce bird damage to agricultural production, the potentially most useful approach to bird management is the development of non-toxic repellents. DRC-3324, a butyramide, is a chemical example of this approach to bird management. It was initially examined under laboratory conditions by Denver Wild¬life Research Center scientists following suggestion of candidacy for this purpose by Upjohn personnel. The chemical met all major criteria established for judging the relative potential of compounds for repellent purposes: the effective concentration was very low; the toxic concentration was substantially greater than the repellent level; it was relatively non-toxic to mammals; and was not phytotoxic to corn seed. The objective of these trials was to evaluate the effectiveness of the chemical under field conditions as a deterrent to red-winged blackbirds (Agelaius phoeniceus) and common grackles (Quiscalus quiscula) damaging freshly planted sweet-corn seed

Child relationships in the middle grades

Thesis (Ed.M.)--Boston Universit

Measurement of the inclusive and dijet cross-sections of b-jets in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

The inclusive and dijet production cross-sections have been measured for jets containing b-hadrons (b-jets) in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV, using the ATLAS detector at the LHC. The measurements use data corresponding to an integrated luminosity of 34 pb^-1. The b-jets are identified using either a lifetime-based method, where secondary decay vertices of b-hadrons in jets are reconstructed using information from the tracking detectors, or a muon-based method where the presence of a muon is used to identify semileptonic decays of b-hadrons inside jets. The inclusive b-jet cross-section is measured as a function of transverse momentum in the range 20 < pT < 400 GeV and rapidity in the range |y| < 2.1. The bbbar-dijet cross-section is measured as a function of the dijet invariant mass in the range 110 < m_jj < 760 GeV, the azimuthal angle difference between the two jets and the angular variable chi in two dijet mass regions. The results are compared with next-to-leading-order QCD predictions. Good agreement is observed between the measured cross-sections and the predictions obtained using POWHEG + Pythia. MC@NLO + Herwig shows good agreement with the measured bbbar-dijet cross-section. However, it does not reproduce the measured inclusive cross-section well, particularly for central b-jets with large transverse momenta.Comment: 10 pages plus author list (21 pages total), 8 figures, 1 table, final version published in European Physical Journal

Jet energy measurement with the ATLAS detector in proton-proton collisions at root s=7 TeV

The jet energy scale and its systematic uncertainty are determined for jets measured with the ATLAS detector at the LHC in proton-proton collision data at a centre-of-mass energy of √s = 7TeV corresponding to an integrated luminosity of 38 pb-1. Jets are reconstructed with the anti-kt algorithm with distance parameters R=0. 4 or R=0. 6. Jet energy and angle corrections are determined from Monte Carlo simulations to calibrate jets with transverse momenta pT≥20 GeV and pseudorapidities {pipe}η{pipe}<4. 5. The jet energy systematic uncertainty is estimated using the single isolated hadron response measured in situ and in test-beams, exploiting the transverse momentum balance between central and forward jets in events with dijet topologies and studying systematic variations in Monte Carlo simulations. The jet energy uncertainty is less than 2. 5 % in the central calorimeter region ({pipe}η{pipe}<0. 8) for jets with 60≤pT<800 GeV, and is maximally 14 % for pT<30 GeV in the most forward region 3. 2≤{pipe}η{pipe}<4. 5. The jet energy is validated for jet transverse momenta up to 1 TeV to the level of a few percent using several in situ techniques by comparing a well-known reference such as the recoiling photon pT, the sum of the transverse momenta of tracks associated to the jet, or a system of low-pT jets recoiling against a high-pT jet. More sophisticated jet calibration schemes are presented based on calorimeter cell energy density weighting or hadronic properties of jets, aiming for an improved jet energy resolution and a reduced flavour dependence of the jet response. The systematic uncertainty of the jet energy determined from a combination of in situ techniques is consistent with the one derived from single hadron response measurements over a wide kinematic range. The nominal corrections and uncertainties are derived for isolated jets in an inclusive sample of high-pT jets. Special cases such as event topologies with close-by jets, or selections of samples with an enhanced content of jets originating from light quarks, heavy quarks or gluons are also discussed and the corresponding uncertainties are determined. © 2013 CERN for the benefit of the ATLAS collaboration

Measurement of the cross-section for b-jets produced in association with a Z boson at root s=7 TeV with the ATLAS detector ATLAS Collaboration

A measurement is presented of the inclusive cross-section for b-jet production in association with a Z boson in pp collisions at a centre-of-mass energy of root s = 7 TeV. The analysis uses the data sample collected by the ATLAS experiment in 2010, corresponding to an integrated luminosity of approximately 36 pb(-1). The event selection requires a Z boson decaying into high P-T electrons or muons, and at least one b-jet, identified by its displaced vertex, with transverse momentum p(T) > 25 GeV and rapidity vertical bar y vertical bar < 2.1. After subtraction of background processes, the yield is extracted from the vertex mass distribution of the candidate b-jets. The ratio of this cross-section to the inclusive Z cross-section (the average number of b-jets per Z event) is also measured. Both results are found to be in good agreement with perturbative QCD predictions at next-to-leading order

Measurement of charged-particle event shape variables in inclusive root(s)=7 TeV proton-proton interactions with the ATLAS detector

The measurement of charged-particle event shape variables is presented in inclusive inelastic pp collisions at a center-of-mass energy of 7 TeV using the ATLAS detector at the LHC. The observables studied are the transverse thrust, thrust minor, and transverse sphericity, each defined using the final-state charged particles' momentum components perpendicular to the beam direction. Events with at least six charged particles are selected by a minimum-bias trigger. In addition to the differential distributions, the evolution of each event shape variable as a function of the leading charged-particle transverse momentum, charged-particle multiplicity, and summed transverse momentum is presented. Predictions from several Monte Carlo models show significant deviations from data

Modelling human choices: MADeM and decision‑making

Research supported by FAPESP 2015/50122-0 and DFG-GRTK 1740/2. RP and AR are also part of the Research, Innovation and Dissemination Center for Neuromathematics FAPESP grant (2013/07699-0). RP is supported by a FAPESP scholarship (2013/25667-8). ACR is partially supported by a CNPq fellowship (grant 306251/2014-0)

Search for the standard model Higgs boson in the diphoton decay channel with 4.9fb -1 of pp collision data at √s=7TeV with atlas

A search for the standard model Higgs boson is performed in the diphoton decay channel. The data used correspond to an integrated luminosity of 4.9  fb-1 collected with the ATLAS detector at the Large Hadron Collider in proton-proton collisions at a center-of-mass energy of √s=7  TeV. In the diphoton mass range 110–150 GeV, the largest excess with respect to the background-only hypothesis is observed at 126.5 GeV, with a local significance of 2.8 standard deviations. Taking the look-elsewhere effect into account in the range 110–150 GeV, this significance becomes 1.5 standard deviations. The standard model Higgs boson is excluded at 95% confidence level in the mass ranges of 113–115 GeV and 134.5–136 GeV