Trichobezoar (hairs ball in stomach) is an uncommon clinical entity. Plucking of hairs Trichotillomania and swallowing (trichophagia) of hairs are two essential conditions needed in development of trichobezoar. It is very rare to suffer with trichobezoar in the absence of trichotillomania. In this report we present two cases of trichobezoar associated with trichophagia in the absence of trichot...

An understanding of rates and mechanisms of incision and knickpoint retreat in bedrock rivers is fundamental to perceptions of landscape response to external drivers, yet only sparse field data are available. Here we present eye witness accounts and quantitative surveys of rapid, amphitheatre-headed gorge formation in unweathered granite from the overtopping of a rock-cut dam spillway by small-...

Recent research has shown that preexisting health condition affected an individual's risk of dying during the 14th-century Black Death. However, a previous study of the effect of adult stature on risk of mortality during the epidemic failed to find a relationship between the two; this result is perhaps surprising given the well-documented inverse association between stature and mortality in hum...

An application of block-based physical modeling for digital sound synthesis is presented in this paper. A membrane model in terms of a fourth order, two-dimensional partial differential equation is solved and discretized with the functional transformation method. The resulting algorithm constitutes an input-output description with input force and output velocity of the membrane. This input-outp...

A new method, fiber fractionation, has been used to isolate and separate cells. The cells are adsorbed to fibers covalently coupled to molecules such as antigens, antibodies, and lectins which can bind specifically to cell-surface components. The cells are then removed mechanically by plucking the taut fibers. Alternatively, competitive inhibitors of binding may be used to remove the cells at a...

Friction is caused by dissipative lateral forces that act between macroscopic objects. An improved understanding of friction is therefore expected from measurements of dissipative lateral forces acting between individual atoms. Here we establish atomic resolution of both conservative and dissipative forces by lateral force microscopy, presenting the resolution of atomic defects. The interaction...

Tea is currently the most popular beverage after water. contributes to livelihood of more than 10 million people globally. There are several categories tea, but black tea popular, accounting for about 78% total consumption. Processing involves following steps: plucking, withering, crushing, tearing and curling, fermentation, drying, sorting, packaging. Fermentation important step in determining...