Peritrichously flagellated bacteria swim in a fluid environment by rotating motors embedded the cell membrane and consequently multiple helical flagella. We present novel mathematical model of microswimmer that can freely run propelled flagellar bundle tumble upon motor reversals. Our is composed rod-shaped rigid body flagella randomly distributed over body. These go through polymorphic transfo...

Bacterial shape usually is dictated by the peptidoglycan layer of the cell wall. In this paper, we show that the morphology of the Lyme disease spirochete Borrelia burgdorferi is the result of a complex interaction between the cell cylinder and the internal periplasmic flagella. B. burgdorferi has a bundle of 7-11 helically shaped periplasmic flagella attached at each end of the cell cylinder a...

Conventional polymer multielectrode arrays (MEAs) have limitations resulting from a high Young’s modulus, including low conformability and gaps between the electrodes and neurons. These gaps are not a problem in soft tissues such as the brain, due to the repopulation phenomenon. However, gaps can result in signal degradation when recording from a fiber bundle, such as the spinal cord. Methods: ...

In this article, a comprehensive method for parametric representation of wire trajectories, allowing accurate geometric description complex and arbitrarily oriented bundles, is introduced. This the starting point to develop computationally efficient numerical transmission-line (TL) model predicting radiated susceptibility bundles wires, illuminated by (possibly) nonuniform electromagnetic field...

http://dx.doi.org/10.1590/S1806-37132014000600013 The current intercostal nerve preservation strategy requires that care be taken when closing a thoracotomy. There are currently three thoracotomy closure techniques: • transosteal or transcostal suture closure • transperiosteal suture closure(5) • pericostal suture closure, whereby sutures are placed in the virtual space between the periosteum a...

The osteocyte lacuno-canalicular system (OLCS) is a large network intercommunicating the lacunae and canaliculi which contain the osteocytes and their cytoplasmic processes within the mineralized bone matrix. The vitality and functioning of the osteocytes and cytoplasmic processes depend upon this intercommunication. To date, the 3-dimensional features of OLCS in the alveolar bone have not been...

In this paper, a systematic approach for EMC modelling of hand-assembled, complex cable bundles is presented. The first part the manuscript focuses on laid out above ground plane, with layout approximately parallel to reference ground. order generate smooth and physics-based trajectories, polynomial curves are used represent conductors in bundle. A suitable process generation bundle samples dev...

Diffusion tensor MRI (DT-MRI) provides information about the structural organization and orientation of white matter fibres and, through the technique of 'tractography', reveals the trajectories of cerebral white matter tracts. We used tractography in the living human brain to address the disputed issue of the nature of occipital and temporal connections. Classical anatomical studies described ...