Ultimate Regime of Rayleigh-Bénard Turbulence: Subregimes and Their Scaling Relations for the Nusselt vs Rayleigh and Prandtl Numbers.

We offer a new model for the heat transfer and the turbulence intensity in strongly driven Rayleigh-Bénard turbulence (the so-called ultimate regime), which in contrast to hitherto models is consistent with the new mathematically exact heat transfer upper bound of Choffrut et al. [Upper bounds on Nusselt number at finite Prandtl number, J. Differ.

Effect on Lipid and Carbohydrate Metabolism.

The effect of maternally inherited endosymbiotic bacteria on triglyceride and carbohydrate metabolism, starvation resistance and feeding behavior of females was studied. Eight lines of the same nuclear background were investigated; one had no infection and served as the control, and seven others were infected with different strains pertaining to wMel and wMelCS groups of genotypes. Most of the infected lines had a higher overall lipid content and triglyceride level than the control line and their expression of the gene regulating triglyceride catabolism was reduced.

New Genotype Increasing Heat Stress Resistance of Host Is Characterized by a Large Chromosomal Inversion.

The maternally transmitted endocellular bacteria Wolbachia is a well-known symbiont of insects, demonstrating both negative and positive effects on host fitness. The previously found Wolbachia strain wMelPlus is characterized by a positive effect on the stress-resistance of its host Drosophila melanogaster, under heat stress conditions. This investigation is dedicated to studying the genomic underpinnings of such an effect.

Easy and Effective Method for Extracting and Purifying Genomic DNA.

A number of methods for extracting the DNA of maternally inherited obligate intracellular bacteria from an insect host and its subsequent purification have been described in previous scholarship. As is present in the hosts' organisms in rather low quantities, these techniques used to be quite labor-intensive. For this paper, we analyzed them in detail, searched for a possibility to simplify and accelerate the protocol, and proposed an easy and effective method for isolating DNA from with a purity sufficient for genomic sequencing.