Comment on "Delayed luminescence of biological systems in terms of coherent states" [Phys. Lett. A 293 (2002) 93]

Popp and Yan [F. A. Popp, Y. Yan, Phys. Lett. A 293 (2002) 93] proposed a model for delayed luminescence based on a single time-dependent coherent state. We show that the general solution of their model corresponds to a luminescence that is a linear function of time. Therefore, their model is not compatible with any measured delayed luminescence. Moreover, the functions that they use to describe the oscillatory behaviour of delayed luminescence are not solutions of the coupling equations to be solved.Comment: 2 pages, no figur

Pair HMM based gap statistics for re-evaluation of indels in alignments with affine gap penalties: Extended Version

Although computationally aligning sequence is a crucial step in the vast majority of comparative genomics studies our understanding of alignment biases still needs to be improved. To infer true structural or homologous regions computational alignments need further evaluation. It has been shown that the accuracy of aligned positions can drop substantially in particular around gaps. Here we focus on re-evaluation of score-based alignments with affine gap penalty costs. We exploit their relationships with pair hidden Markov models and develop efficient algorithms by which to identify gaps which are significant in terms of length and multiplicity. We evaluate our statistics with respect to the well-established structural alignments from SABmark and find that indel reliability substantially increases with their significance in particular in worst-case twilight zone alignments. This points out that our statistics can reliably complement other methods which mostly focus on the reliability of match positions.Comment: 17 pages, 7 figure

Psyllium seed may be effective in the treatment of gastroesophageal reflux disease (GERD) in patients with functional constipation

AbstractGERD, return of stomach contents into the esophagus, is one of the most common gastrointestinal disorders in medicine. Its common symptoms are heartburn and acid reflux. Usually, patients with GERD history develop clinical signs such as heartburn accompanied by functional constipation. Omeprazole, a proton pump inhibitor (PPIs), is a drug of choice for GERD but all patients do not respond to the drug and long-term use of these drugs leads to infections. According to the same physiopathology mechanisms of chronic constipation and GERD, improvement of functional constipation may be effective in relieving symptoms of GERD. According to the effectiveness of psyllium seeds in chronic constipation symptoms, it is predicted to be effective in treating GERD in patients with chronic constipation

The structure of colloidosomes with tunable particle density: simulation vs experiment

Colloidosomes are created in the laboratory from a Pickering emulsion of water droplets in oil. The colloidosomes have approximately the same diameter and by choosing (hairy) particles of different diameters it is possible to control the particle density on the droplets. The experiment is performed at room temperature. The radial distribution function of the assembly of (primary) particles on the water droplet is measured in the laboratory and in a computer experiment of a fluid model of particles with pairwise interactions on the surface of a sphere.Comment: 16 pages, 2 tables, 7 figure