Wool fabrics were treated with keratin hydrolysate in isolated systems, in systems incorporating a cross-linking enzyme, and in systems with nanoparticle silver. The dimensions of wool fabric were controlled after keratin applications and the strength of bleached wool fabric was improved. Keratin applications imparted these improved properties when applied alone and when applied with the enzyme...

We explore the potential of electron-photon colliders to measure fundamental supersymmetry parameters via the processes eγ → ˜ e ˜ χ 0 (selectron-neutralino) and eγ → ˜ ν ˜ χ − (sneutrino-chargino). Given the˜χ 0 and˜χ − masses from e + e − and hadron collider studies, cross section ratios σ(γ −)/σ(γ +) for opposite photon helicities determine the˜ν L , ˜ e L and˜e R masses, independent of the ...

This report summarises the results of the four-fermion working group of the LEP2-MC workshop, held at CERN from 1999 to 2000. Recent developments in the calculation of four-fermion processes in electron-positron collisions at LEP-2 centre-of-mass energies are presented, concentrating on predictions for four main reactions: W-pair production, visible photons in four-fermion events, single-W prod...

Estimates are presented for the cross sections for production of dibaryon resonances in electron-deuteron scattering. Two different models, with these resonances as two-body and three-body excited states, are analysed. Submitted to Physical Review D * Work supported in part by the Department of Energy under contract DE-AC03-76SF00515 and the National Science Foundation under grant PHY-75-15986....

We present a thorough analysis of the direct semiexclusive production in quantum chromodynamics (QCD) of single, highly isolated mesons from electron-positron or two-photon initial states. Corrections of higher order and of subleading twist are considered, and potential divergences in the naive calculation are contained. Monte Carlo methods are used to relate the QCD calculations to experimenta...

Electron–positron pair production in vacuum by a single focused laser pulse and by two counterpropagating colliding focused pulses is analyzed. A focused laser pulse is described using a realistic threedimensional model based on an exact solution of Maxwell’s equations. In particular, this model reproduces an important property of focused beams, namely, the existence of two types of waves with ...

Electron storage rings used for the production of synchrotron radiation (SR) have an output photon brightness that is limited by the equilibrium beam emittance. By using interleaved injection and ejection of bunches from a source with repetition rate greater than 1 kHz, we show that it is practicable to overcome this limit in rings of energy ∼1  GeV. Sufficiently short kicker pulse lengths enab...

A bstract We study all the possible spin asymmetries that can arise in back-to-back electron-jet production, ep → e + jet X , as well associated fragmentation process, +jet( h )+ electron-proton collisions. derive factorization formalism for these and perform corresponding phenomenology kinematics relevant to future electron ion collider. In case of unpolarized scattering, we also give predicti...