The kink-mode waves in solar magnetic flux tubes have been proposed as the carriers of significant amounts of energy into theupper atmosphere.Their observational signature, i.e. their influence on polarized spectral lines, is investigated theoretically using a simple MHD model and radiative transfer calculations. The results of a large model grid are presented. The wave is found to periodically...

Protein secretion is a common property of pathogenic microbes. Gram-negative bacterial pathogens use at least 6 distinct extracellular protein secretion systems to export proteins through their multilayered cell envelope and in some cases into host cells. Among the most widespread is the newly recognized Type VI secretion system (T6SS) which is composed of 15-20 proteins whose biochemical funct...

Foreign bodies in the tracheobronchial tree are a common occurrence. But the incidence of broken parts of the tracheostomy tube as a foreign body has seldom been reported before. One such case is reported, where a patient presented with two occurrences of broken flanges of Fuller's tracheostomy tube enlodged in the tracheobronchial tree. The first presentation was indeed unusual when the broken...

Acoustic resonances in Francis turbines often define undesirable limitations to their operating ranges at high load. The knowledge of the mechanisms governing the onset and the sustenance of these instabilities in the swirling flow leaving the runner is essential for the development of a reliable hydroacoustic model for the prediction of system stability. The present work seeks to study experim...

Since failure in, damage to, and performance degradation of power generation components in operation under harsh environment of high pressure and high temperature may cause both economic and human loss at power plants, highly reliable operation and control of these components are necessary. Therefore, a systematic method of diagnosing the condition of these components in its early stages is req...

This paper contributes a feedback operator, in the form of a monoidal trace, to the theory of coalgebraic, state-based modelling of components. The feedback operator on components is shown to satisfy the trace axioms of Joyal, Street and Verity. We employ McCurdy’s tube diagrams, an extension of standard string diagrams for monoidal categories, for representing and manipulating component diagra...

The type VI secretion systems (T6SS) are present in about a quarter of all Gram-negative bacteria. Several key components of T6SS are evolutionarily related to components of contractile nanomachines such as phages and R-type pyocins. The T6SS assembly is initiated by formation of a membrane complex that binds a phage-like baseplate with a sharp spike, and this is followed by polymerization of a...

Neural tube closure is a critical developmental event that relies on actomyosin contractility to facilitate specific processes such as apical constriction, tissue bending, and directional cell rearrangements. These complicated processes require the coordinated activities of Rho-Kinase (Rock), to regulate cytoskeletal dynamics and actomyosin contractility, and the Planar Cell Polarity (PCP) path...

This paper describes a Geographic Information System (GIS)-based method of estimating the water balance as applied to a coastal aquifer near Bowen, Queensland, Australia, using the ten interactive steps in development and evaluation of environmental models of Jakeman et al. [2006]. The 220 km Bowen irrigation area is data-rich with 260 observation bores plus stream gauging, metering of irrigati...

Abstract The detailed CFD simulation of the shell-side flow inside shell-and-tube heat exchangers results prohibitive for large-size components, due to large number tubes, together with multi-scale nature features. To overcome this issue, porous media approach can be adopted, substituting tube bundle a domain, where suitable momentum sink term in Navier-Stokes equation is provided. In paper, no...