Straightening of a cranial base flexure observed in the midsagittal presphenoid region of mice has been postulated to play a major role in palate closure by providing the internal shelf force for palatal shelf movement. The straightening is thought to take place during the 8 h immediately preceding closure. This mechanical model assumes that straightening of the cranial base flexure is transmit...

Abstract Despite Lucretius’ observations about fertility and marriage at the end of book 4, Epicurean view on procreation is to a great extent still uncharted territory, due shortage textual evidence other than Lucretius. An important, but often neglected source information can be found in few remaining columns the, unfortunately rather badly preserved, Herculaneum papyrus PHerc . 908/1390, con...

We study “distance spheres”: the set of points lying at constant distance from a fixed arbitrary subset $K$ $[0,1]^d$. show that, away regions where is “too dense” and small volume, we can decompose $[0,1]^d$ into finite number sets on which spheres be “straightened” subsets parallel $(d-1)$-dimensional planes by bi-Lipschitz map. Importantly, constants are independent $K$.

PURPOSE The optic nerve (ON) sheath's role in limiting duction has been previously unappreciated. This study employed magnetic resonance imaging (MRI) to demonstrate this constraint on adduction. METHODS High-resolution, surface coil axial MRI was obtained in 11 normal adults, 14 subjects with esotropia (ET) having normal axial length (AL) < 25.8 mm, 13 myopic subjects with ET and mean AL 29....

Introduction Success of root canal treatment depends on several factors; among which, maintaining the original canal path during mechanical preparation is extremely important. This in vitro study aimed to compare apical transportation using RaCe NiTi rotary system and precurved stainless steel (SS) hand files in a reciprocating handpiece. Methods and Materials Mesiobuccal canals of 40 extract...

We give a simple new proof for the straightening law of Doubilet, Rota, and Stein using a generalization of the Laplace expansion of a determinant.