Dry-heat sterilization of planetary lander capsules requires a knowledge of the thermal resistivity of microorganisms in the environment to which they will be subjected during sterilization of the space hardware. The dry-heat resistance of Bacillus subtilis var. niger spores on various lander capsule materials was determined at 125 C. Eight surface materials were evaluated, including a referenc...

We present the results on the anomalous 2D transport behavior by employing Drude-Boltzmann transport theory and taking into account the realistic charge impurity scattering effects. Our results show quantitative agreement with the existing experimental data in several different systems and address the origin of the strong and non-monotonic temperature dependent resistivity.

We report on the temperature derivative of the resistivity close to the Curie temperature of the reentrant systems mMn 22 at % and a,&Zr 8 at % . Magnetic susceptibility results for the mMn system are also presented. Critical exponents could be deduced from the data. The critical behaviour of systems presenting quenched magnetic disorder is a topic of considerable current interest. In particula...

Electrical resistivity describes how much a certain material resists electrical flow. Every material has an associated resistivity, ρ, which is constant. Conductors, such as copper have a low resistivity, while insulators, such as glass, have a high resistivity. Resistivity is an important property of any electrical object because it directly relates to the resistance, which relates to Ohm’s la...

– We present the results of a systematic study of thin-films of amorphous indiumoxide near the superconductor-insulator transition. We show that the film’s resistivity follows a simple, well-defined, power-law dependence on the perpendicular magnetic field. This dependence holds well into the insulating state. Our results suggest that a single mechanism governs the transport of our films in the...

We study here the role randomly-placed non-magnetic scatterers play on the Kondo effect. We show that spin relaxation effects (with time τ o s ) in the vertex corrections to the Kondo self-energy lead to an exact cancellation of the singular temperature dependence arising from the diffusion poles. For a thin film of thickness L and a mean-free path l, disorder provides a correction to the Kondo...

Electrical transport and specific heat properties of Nd1−x Pbx MnO3 single crystals for 0.15 x 0.5 have been studied in the low temperature regime. The resistivity in the ferromagnetic insulating (FMI) phase for x 0.3 has an activated character. The dependence of the activation gap on doping x has been determined and the critical concentration for the zero-temperature metal–insulator transition...

A self-consistent renormalization scheme has been applied to nonhelical magnetohydrodynamic (MHD) turbulence with zero cross helicity. Kolmogorov's 5/3 power law has been shown to be a consistent solution for d> or =d(c) approximately 2.2. For Kolmogorov's solution, both renormalized viscosity and resistivity are positive for the whole range of parameters. Various cascade rates and Kolmogorov's...

We report the observation of an acute sensitivity of the anisotropic longitudinal resistivity of twodimensional electron systems in half-filled high Landau levels to the magnitude and orientation of an in-plane magnetic field. In the third and higher Landau levels, at filling fractions n 9 2, 11 2, etc., the in-plane field can lead to a striking interchange of the “hard” and “easy” transport di...

The anisotropic resistivities of Bi 2 Sr 2 Ca 1−x Er x Cu 2 O 8 single crystals were measured and analyzed from 4.2 to 500 K with special interest taken in the parent antiferromagnetic insulator with x=1.0. Although the resistivity is semiconducting along both the in-plane and out-of-plane directions, the temperature dependences are found to be significantly different. As a result, the resistiv...