Using first-principles calculations, we investigate the electronic structure of CoSb3 compound by considering the spin–orbit interaction. Within the framework of Boltzmann theory, the transport coefficient (power factor) is evaluated as a function of chemical potential assuming a rigid-band picture and constant relaxation time. It is found that appropriate n-type doping in the compound may be better than p-type doping to enhance the power factor. Our theoretical calculations give a plausible guide on how to optimize the thermoelectric performance of this compound, and the upper limit of its ZT value is estimated.

The use of polymeric fullerene to coat the fiber used in solid-phase microextraction (SPME) is described. The efficiency, sensitivily, and rehabihly of the new coated fibers have been investigated for the extraction of three kinds of sample, BTEX, naphthalene congeners, and phthahc acid diesters, from the headspace of water samples. Detection limits at the ng L ] to I-tg L ] level were achieved by use of GC-FID. A wide linear range was obtained with precision lypically below 12% relative standard deviation for phthahc acid diesters. The effects on extraction efficiency of factors such as addition of salt, stirring, and exposure time were also studied.

No abstract

in the paper of B. Chowdhury entitled 'Assesment of the nature....' on page 437 line number six from the top the equation should read: ξ = (τ τ KT ln 2 1 /). On page 439 for Fig. 5 the x-axis should be changed to Treatment temperature /°C. On page 440 for Fig. 6 the correct signals are as follows:o-no heat treatment,-¬-treated at 435°C,-o-treated at 525°C,l-treated at 200°C. J. Therm. Anal. Cal., 64, 2001 in the paper of B. Chowdhury entitled 'Treatment of Anomalous...' on page 557 line number six from the top should read: Sample thickness was measured in mil... On page 563 Test samples should read: Results for three structurally different polymers shown in Fig. 3. will be reported. On page 563 line 23 from the top V ′ t should read ′ V t .