A hydrophobic constriction site can act as an efficient barrier to ion and water permeation if its diameter is less than the diameter of an ion's first hydration shell. This hydrophobic gating mechanism is thought to operate in a number of ion channels, e.g. the nicotinic receptor, bacterial mechanosensitive channels (MscL and MscS) and perhaps in some potassium channels (e.g. KcsA, MthK and Kv...

this paper presents an auto redundant technique for analysis of grid with curved members.this technique is based on the force method, but in the technique choice of the redundant iscompletely eliminated. the analysis technique is found very effective, accurate andprogrammable. a comprehensive c++ program has been developed to compute internalforces at the end of each member of the grid for diff...

For dedicated gastric imaging, water is used as an oral contrast agent.. . Multidetector row CT offers considerable flexibility; therefore, although the. . it often results in circumferential antral wall thickening or focal thickening along the greater . Aug 10, 2012. About 30% of cancers are located in the antrum, 30% in the. . remains pliable and distensible without significant luminal. Other...

A, CT image of linitis plastica (arrows denote a thickened gastric wall); B, endoscopic image; tumors located in the antrum, vomiting and gastric outlet obstruction may occur.. Gastric Cancer: Causes. centric in 4%. The mean (± SD) antral wall thickness was 5.1 ± 1.6 mm.. . group was statistically significant (p < 0.001). Diffuse Gastric Wall Thickening: Appearances Can Be Deceptive. Vishal Sha...

UNLABELLED The fungal cell wall confers cell morphology and protection against environmental insults. For fungal pathogens, the cell wall is a key immunological modulator and an ideal therapeutic target. Yeast cell walls possess an inner matrix of interlinked β-glucan and chitin that is thought to provide tensile strength and rigidity. Yeast cells remodel their walls over time in response to en...