A uniform source-and-sink scheme was developed by Cao and Li [J. Chem. Phys. 133 (2010), 024106] to calculate the thermal conductivity of solid argon. Now, we aim to apply this scheme to the calculation of the self-diffusion coefficient. We divide the particles into equal halves, and label them with A or B. By exchanging the labels of individual atoms from the right and left half systems, we ca...

Corticosteroid-binding globulin was isolated from normal human plasma by successive anion exchange chromatography and gel filtration. Ammonium sulfate fractionation was employed as a preliminary step when large volumes were processed. The purification was about 4000-fold. Homogeneity was shown by free boundary, agar and paper electrophoresis, sedimentation velocity, and diffusion. Immunoelectro...

(How and why to measure the germination process?). In the last two centuries, papers have been published including measurements of the germination process. High diversity of mathematical expressions has made comparisons between papers and some times the interpretation of results difficult. Thus, in this paper is included a review about measurements of the germination process, with an analysis o...

The development of a Multiple Airport Region (MAR) could lead to fierce competition. To evaluate the level homogenization between airports in MAR, evaluation method based on multi-dimensional indicators was developed. A indicator system is proposed that takes into account infrastructure, integrated support, operational efficiency and airline networks. Then Critic Delphi are used assign hierarch...

Equal-channel angular pressing (ECAP) combined with the Conform process provides a solution for the continuous production of ultrafine-grained materials. In the present study finite element method was executed to investigate the effects of die channel angle and friction on the strain homogeneity and the required torque in ECAP-Conform process. Deformation behaviour of Al 6061 wires was analyzed...

Jarik Nešetřil suggested to the first author the investigation of notions of homogeneity for relational structures, where “isomorphism” is replaced by “homomorphism” in the definition. Here we look in detail at what happens for posets. For the strict order, all five generalisations of homogeneity coincide, and we give a characterisation of the countable structures that arise. For the non-strict...

Many medical studies are carried out to investigate the size of some effect, for example the treatment effect in a controlled clinical trial or the risk of exposure to some substance in an observational study. To this end it is usual to compare groups of subjects, such as those receiving active treatment with those getting placebo or those exposed with those not exposed. The comparison is often...

BACKGROUND While Denmark is well known for its plethora of registers. Many studies are conducted on research databases that only cover parts of Denmark, and regional differences could potentially threaten these studies' external validity. The aim of this study was to assess sociodemographic and health related homogeneity of the five Danish regions. METHODS We obtained descriptive data for the...