Protein aggregation is phenomenon wherein protein loses its native structure and aggregates due to the adaption of non-native conformation. Amyloid aggregation formed by the accumulation of various proteins causes many diseases in humans and other organisms. Antioxidants can prevent proteins aggregation. Pulicaria undulata  extract along with phenolic compounds can increase protein stability an...

Hidden leaks from water supply networks account for 50% to 90% of total leakage losses. The presence two or more simultaneous in a section the network significantly reduces accuracy locating hidden leaks. method independent Poisson events and hypothesis stationarity, absence consequences, ordinariness are used probabilistic description problem multi-leakage networks. analytical dependence proba...

interaction between dna and histone h, was investigated in the presence and absence of sodium-n-dodecyl sulphate (sds) and dodecyl trimethylammonium bromide (dtab) at temperatures of 27 and 37?c, in 2.5 mm phosphate buffer, ph 6.4 by uv spectrophotometry, equilibriumdialysis and titration. the presence of 1.33 mm sds caused histone h to fold and to further contact dna. binding data were used in...

surfactant molecules are used as interesting tools to study the structure, function and stability of proteins. protonation states of amino acids may be changed in the presence of surfactants. in this work, using experimental observations and molecular dynamic simulation, the effects of sodium dodecyl sulfate on the acid dissociation constants of tryptophan was examined. the acid–base equilibriu...

To improve the performance of multi-channel speech enhancement algorithms, we previously proposed a hybrid Wiener postfilter for microphone arrays under the assumption of a diffuse noise field [4]. In this paper, considering the speech presence uncertainty, we further improve the hybrid post-filter presented before by integrating a novel robust estimator for the a priori speech absence probabil...