## Search

Now showing items 1-10 of 19

#### collided-flux-expansion method for the transport of muonic deuterium in finite media

(American Physical Society, 1991-07)

Transport of muonic deuterium atoms in a slab of thickness d filled with a molecular deuterium gas is described by means of the multiple-collision expansion in the framework of a time-dependent theory. The relevant expressions ...

#### A note on best approximation and invertibility of operators on uniformly convex Banach spaces

(Hindawi Publishing Corp, 1991-01-01)

It is shown that if X is a uniformly convex Banach space and S a bounded linear operator onX for which ?I-S?=1, then S is invertible if and only if ?I-12S? <1. From this it follows thatif S is invertible on X then either ...

#### Biological integrity: a long-neglected aspect of water resource management

(Ecological Society of America, 1991-02)

Water of sufficient quality and quantity is critical to all life. Increasing human population and growth of technology require human society to devote more and more attention to protection of adequate supplies of water. ...

#### equilibrium budding and vesiculation in the curvature model of fluid lipid vesicles

(American Physical Society, 1991-06)

According to a model introduced by Helfrich [Z. Naturforsch. 28c, 693 (1973)], the shape of a closed lipid vesicle is determined by minimization of the total bending energy at fixed surface area and enclosed volume. We ...

#### Hole dynamics and effective hole-hole interaction in a quantum antiferromagnet

(American Physical Society, 1991-04)

By the use of an effective Hamiltonian which takes into account the constraint on the motion of holes in a quantum antiferromagnet, the dynamics of holes is investigated. It is found that there is a quasiparticle band whose ...

#### anomaly meltdown

(AIP Publishing, 1991-08)

It is shown that at nonzero temperature it is possible that anomalies in representations of symmetry groups and gauge groups, present at zero temperature, disappear. Several examples are given. Thus the idea that anomalies ...

#### Optical excitations in Bi2Sr2CuO6 and Bi2Sr2CaCu2O8: Evidence for localized (excitonic) and delocalized charge-transfer gaps

(American Physical Society, 1991-01)

The optical properties of Bi2Sr2CuO6 (2:2:0:1) and Bi2Sr2CaCu2O8 (2:2:1:2) have been investigated by transmission electron-energy-loss spectroscopy. At low energy, E(loss) less-than-or-equal-to 10.0 eV, common features are ...

#### effect of multiple scattering on transition radiation from a dynamic interface

(American Physical Society, 1991-09)

The effect of multiple scattering (long-range, small-angle elastic Coulomb collisions) on the radiation field associated with transition radiation from a nonstationary plasmalike medium is addressed with the help of a ...

#### Power spectrum of the current in systems with a conserved density

(American Physical Society, 1991-09)

Motivated by recent studies of model sandpiles, the power spectrum S of the current in dissipative dynamical systems with a conserved density is investigated. In contrast to self-organized criticality exhibited in certain ...

#### the Riemann-Hilbert problem for nonsymmetric systems

(AIP Publishing, 1991-12)

A comparison of the Riemann-Hilbert problem and the Wiener-Hopf factorization problem arising in the solution of half-space singular integral equations is presented. Emphasis is on the factorization of functions lacking ...