The physical properties of fish liver and rat liver mitochondria were compared as a function of temperature and osmotic pressure. The data indicate that fish mitochondria are more flexible and swell at a more rapid rate over a 0 to 30 degrees C temperature range, whereas the rates of swelling at 30 to 40 degrees C are comparable. The swelling rates of both fish and rat mitochondria vary with te...

Genetic markers from Bacteroides and other faecal bacteria are being tested for inclusion in regulations to quantify aquatic faecal contamination and estimate public health risk. For the method to be used quantitatively across environments, persistence and decay of markers must be understood. We measured concentrations of contaminant molecular markers targeting Enterococcus and Bacteroides spp....

introduction: today the prevalence of teeth decays has considerably decreased. related organizations and institutions mention several reasons for it such as improvement of decay diagnostic equipment and tools which are even capable of detecting caries in their initial stages. this resulted in reduction of costs for patients and remarkable increase in teeth life span. there are many methods for ...

In this paper, we mainly focus on the compressible viscoelastic flows of Oldroyd type with general pressure law, one non-Newtonian fluids exhibiting elastic behavior. For P′(ρ̄)+α>0, α > 0 being elasticity coefficient fluid, prove global existence and uniqueness strong solution in critical Besov spaces when initial data u⃗0 low frequency part ρ0, τ0 are small enough compared to visc...

Although mRNA decay rates are a key determinant of the steady-state concentration for any given mRNA species, relatively little is known, on a population level, about what factors influence turnover rates and how these rates are integrated into cellular decisions. We decided to measure mRNA decay rates in two human cell lines with high-density oligonucleotide arrays that enable the measurement ...

Free scalar fields in de Sitter space have a one-parameter family of states invariant under the de Sitter group, including the standard thermal vacuum. We show that, except for the thermal vacuum, these states are unphysical when gravitational interactions are included. We apply these observations to the quantum state of the inflaton, and find that at best, dramatic fine tuning is required for ...

African trypanosomes are an excellent system for quantitative modelling of post-transcriptional mRNA control. Transcription is constitutive and polycistronic; individual mRNAs are excised by trans splicing and polyadenylation. We here measure mRNA decay kinetics in two life cycle stages, bloodstream and procyclic forms, by transcription inhibition and RNASeq. Messenger RNAs with short half-live...

Abstract In this paper, we consider the sign of solutions to Cauchy problems linear and semilinear polyharmonic heat equations. for higher order parabolic equations have no positivity preserving property in general, however, it is expected that these are eventually globally positive if initial data decay slowly enough. We first show existence threshold rate datum which separates whether corresp...

I discuss two case studies from classical electrodynamics challenging the distinction between laws that delineate physically possible words and initial conditions. First, for many reasonable initial conditions there exist no global solutions to the MaxwellLorentz equations for continuous charge distributions. Second, in deriving an equation of motion for a charged point particle one needs to in...