Radyushkin proposes that the reaction is dominated by a short distance quark interchange mechanism with the incoming photon absorbed on the ex changed quarks This leads to the prediction that the cross section is nearly symmetric about cm with strong forward and backward angle peaking Nagornyi and Dieperink in an asymptotic meson exchange model calculate that the cross section is very asymmetri...

The results of an experimental investigation of kerbside bridge deck drainage units are presented. The conveyance capacity, resistance coefficients and sediment transporting efficiencies of different types of drainage unit used in shallow bridge drainage decks are examined over a range of bed gradients likely to be encountered in practice. The use of a V-shaped cross section is shown to be part...

I present approximate next-to-next-to-leading-order (aNNLO) transverse-momentum (pT ) distributions in single-top production processes. The aNNLO results are derived from next-to-next-to-leading-logarithm (NNLL) resummation of soft-gluon corrections in the differential cross section. Single-top as well as single-antitop pT distributions are shown in t-channel, s-channel, and tW production for L...

The pp → pnπ reaction is a channel with the largest total cross section for pp collision in COSY/CSR energy region. In this work, we investigate individual contributions from various N and ∆ resonances with mass up to about 2 GeV for the pp → pnπ reaction. We extend a resonance model, which can reproduce the observed total cross section quite well, to give theoretical predictions of various dif...

We present a new semi-discrete central scheme for one-dimensional shallow water flows along channels with non-uniform rectangular cross sections and bottom topography. The scheme preserves the positivity of the water height, and it is preserves steady-states of rest (i.e., it is wellbalanced). Along with a detailed description of the scheme, numerous numerical examples are presented for unstead...

A four–nucleon calculation of the total 4He photodisintegration cross section is performed. The full final–state interaction is taken into account for the first time. This is achieved via the method of the Lorentz integral transform. Semi–realistic NN interactions are employed. Different from the known partial two–body 4He(γ, n)3He and 4He(γ, p)3H cross sections our total cross section exhibits...

Clonal BC3H-1 muscle cells were studied using patch-clamp techniques. The structure and ion binding sites of the nicotinic ACh receptor channel were examined by measuring permeability ratios and streaming potentials. The permeability ratio of lithium to ammonium remained constant from 10 to 150 mM. That result indicates there is one primary binding site in the narrowest region of the channel ov...

I present the resummation of collinear and soft gluon corrections to single top quark production in the t channel at next-to-next-to-leading logarithm (NNLL) accuracy using two-loop soft anomalous dimensions. The expansion of the resummed cross section yields approximate next-to-next-to-leading order (NNLO) cross sections. Numerical results for t-channel single top quark (or single antitop) pro...

Using numerical simulations shock wave physics in a constant area channel behind convergent or divergent is investigated. It found that propagation the downstream uniform region influenced by post-shock flow unsteadinesses. A detailed description provided and quasi-steady model for determining waves intensity at large times proposed. Moreover, this study points out limits of use Whitham's theor...