نتایج جستجو برای: lead pb
تعداد نتایج: 366110 فیلتر نتایج به سال:
In an attempt to disentangle the effects of nuclear geometry from those of expansion we study the dependence of the longitudinal radius (RL) on nuclear numbers of colliding ions within a simple model of multiple nucleonnucleon collisions.The model has built in the nuclear geometry but there is no dynamical expansion.In principle, what is significantly beyond models of this type can be considere...
The N-oxide O atom of the minoxidil unit in the 1/1 adduct with lead(II) iodide, [PbI(2)(C(9)H(15)N(5)O)](n), bridges two Pb(II) atoms, as do each of the I atoms. The bridging inter-actions give rise to a linear chain motif that propagates along the a axis of the ortho-rhom-bic unit cell. The coordination sphere around the six-coordinate Pb(II) atom is a distorted ψ-monocapped octa-hedron in wh...
In hadronic collisions, electroweak bosons are produced in initial hard scattering processes and they are not affected by the strong interaction. In proton–proton collisions, they have been suggested as standard candles for luminosity monitoring and their measurement can improve the evaluation of detector performances. In nucleus-nucleus and proton–nucleus collisions, W-bosons allow one to chec...
Measurements of charged jet production as a function of centrality are presented for p-Pb collisions recorded at [Formula: see text] TeV with the ALICE detector. Centrality classes are determined via the energy deposit in neutron calorimeters at zero degree, close to the beam direction, to minimise dynamical biases of the selection. The corresponding number of participants or binary nucleon-n...
Electric charge correlations are studied with the Balance Function method for central Pb + Pb collisions at the CERN SPS. The results on centrality selected Pb + Pb interactions at 40 and 158 AGeV are presented for the first time for two different rapidity intervals. In the mid-rapidity region a decrease of the width with increasing centrality of the collision is observed whereas in the forward...
The productions of real photons from quark gluon plasma and hot hadronic matter formed after the nucleus nucleus collisions at ultra-relativistic energies are discussed. The effects of the spectral shift of the hadrons at finite temperature on the production of photons are investigated. On the basis of the present analysis it is shown that the photon spectra measured by WA98 collaboration in Pb...
In this work, a novel electrochemiluminescence (ECL) sensor based on Au nanoparticles-hybridized Pb (II)-β-cyclodextrin (Pb-β-CD) metal-organic framework for detecting hexavalent chromium (Cr(VI)) was developed. Pb-β-CD shows excellent ECL behavior and unexpected reducing ability towards Au ions. Au nanoparticles could massively form on the surface of Pb-β-CD (Au@Pb-β-CD) without use of any add...
The heavy-ion programme at the CERN SPS, which started back in ’86, has produced a wealth of very interesting and intriguing results in the quest for the quark-gluon plasma. The highlights of the programme on dilepton and direct photon measurements are reviewed emphasizing the most recent results obtained in Pb-Pb collisions at 158 A GeV. Prospects from RHIC are discussed.
abstract nowadays, environmental pollution by heavy metals is one of the most serious threats of the world which needs effective remediation actions. the aim of this study was to investigate the potential use of atriplex [atriplex verucifera], salicornia [salicornia europaea] and chenopodium album in simultaneous uptake and accumulation of na and cd or pb in two calcareous soils with different ...
W. Loveland, D. Peterson, A. M. Vinodkumar, P.H.Sprunger , D. Shapira, J. F. Liang, G.A. Souliotis ,D.J. Morrissey , and P. Lofy 5 Dept. of Chemistry, Oregon State University, Corvallis, OR,97331. Physics Division, Argonne National Laboratory, Argonne, Il 60439 Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN and National Superconducting Cyclotron Laboratory, Michigan State Univer...
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