1,002 research outputs found
Circular 50
In 1981 a survey was conducted to determine the kinds and amounts of
pesticides used in the production of potatoes and small grains in Alaska as
well as the manner in which they were used. Alaska has been asked by the
United States Department of Agriculture to cooperate with the other states
in a pesticide impact assessment program designed to aid the Environmental
Protection Agency in predicting the consequences of its actions. This study
was initaited to determine the importance of pesticides to the production of
these crops. This compilation is not intended to present recommendations for pest
management stuations in Alaska, and it should not be used as a pest-control
guide. It simply reports surveyed information and should be used only as a
reference to pesticide usage in 1981. Some general information is provided
on the classification and application of each pesticide
Eccentricity fluctuations in an integrated hybrid approach: Influence on elliptic flow
The effects of initial state fluctuations on elliptic flow are investigated
within a (3+1)d Boltzmann + hydrodynamics transport approach. The spatial
eccentricity ( and ) is calculated for
initial conditions generated by a hadronic transport approach (UrQMD). Elliptic
flow results as a function of impact parameter, beam energy and transverse
momentum for two different equations of state and for averaged initial
conditions or a full event-by-event setup are presented. These investigations
allow the conclusion that in mid-central ( fm) heavy ion collisions the
final elliptic flow is independent of the initial state fluctuations and the
equation of state. Furthermore, it is demonstrated that most of the is
build up during the hydrodynamic stage of the evolution. Therefore, the use of
averaged initial profiles does not contribute to the uncertainties of the
extraction of transport properties of hot and dense QCD matter based on viscous
hydrodynamic calculations.Comment: 7 pages, 7 figures, minor revision of figures and conclusion, as
published in PR
Reconstructing and mesons from non-leptonic decays in C+C at 2AGeV
We predict transverse and longitudinal momentum spectra and yields of
and mesons reconstructed from hadron correlations in C+C
reactions at 2~AGeV. The rapidity and distributions for reconstructable
mesons differs strongly from the primary distribution, while the
's distributions are only weakly modified. We discuss the temporal and
spatial distributions of the particles emitted in the hadron channel. Finally,
we report on the mass shift of the due to its coupling to the
, which is observable in both the di-lepton and channel.
Our calculations can be tested with the Hades experiment at GSI, Darmstadt
Centrality and Energy Dependence of Proton, Light Fragment and Hyperon Production
Recent results of the NA49 collaboration are discussed. These include the
energy dependence of stopping and the production of the light fragments t and
3He. New data on the system size dependence of hyperon production at 40A and
158AGeV are also presented.Comment: 4 pages, Quark Matter 2006 proceeding
A model comparison of resonance lifetime modifications, a soft equation of state and non-Gaussian effects on correlations at FAIR/AGS energies
HBT correlations of pairs at FAIR/AGS energies are investigated
by using the UrQMD transport model and the CRAB analyzing program. Three
different possible sources (treatment of resonance lifetimes, a soft equation
of state and non-Gaussian effects) to understand the HBT puzzle are
investigated. Firstly, we find that different treatments of the resonance decay
time can not resolve the HBT time-related puzzle, however it can modify the HBT
radii at low transverse momenta to some extent to explain the data slightly.
Secondly, with a soft equation of state with momentum dependence, the measured
transverse momentum dependent HBT radii and ratio can be described
fairly well. Thirdly, non-Gaussian effects are visible in the calculated
correlation function. Using the Edgeworth expansion, one finds that the
non-Gaussian effect is strongest in the longitudinal direction and weakest in
the sideward direction.Comment: 18 pages, 6 figures. To be published in J.Phys.
Circular 40
For cooperation and assistance in the work reported here, we gratefully acknowledge Dr.
William Burgoyne, State of Alaska Division of Environmental Conservation and Mr. Delon
Brown, USDA, Alaska Crop and Livestock Reporting Service. We especially appreciate the efforts
of numerous pesticide manufacturers, distributors, dealers, and users who took the necessary
time to provide information essential for this compilation. Richard Maxwell, Agricultural Chemicals
Specialist, Cooperative Extension Service, Washington State University, provided difficult to
locate pesticide label information. The editors of Farm Chemicals Handbook, 1980, provided the
list of preferred names as well as information regarding general application of pesticide products.Acknowledgments -- Introduction -- Reference -- Pesticide Use in Alaska, 197
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