-The following morphometric variables were examined in 18 primary maxillary first molars at various stages of development, collected from archaeological excavation sites in Israel: perimeters and areas from the occlusal view; buccolingual and mesiodistal dimensions and intercusp distances; the angle between the line joining the distobuccal, mesiobuccal and lingual cusps; and the height of the m...

AIM To investigate the prevalence of the talon cusps in a sample of Indian dental patients and their distribution among different types of teeth. To determine the presence of other dental anomalies associated with the talon cusps. METHOD 2740 out patients (1523 males and 1217 females) attending Oral Medicine department from November 2010 to January 2011 were screened for the presence of talon...

Aims: We sought to analyse local distribution of aortic annulus and left ventricular outflow tract (LVOT) calcification in patients undergoing transcatheter aortic valve replacement (TAVR) and its impact on aortic regurgitation (AR) immediately after device placement. Methods and results: A group of 177 patients with severe aortic stenosis undergoing multislice computed tomography of the aortic...

AJXHOUGH the importance of Carabelli's cusp in phylogenetic studies and for primary racial classification is generally acknowledged, the exact significance of this variable trait remains obscure.and controversial (MOORREES, 1957; KORENHOF, 1960). In this report we examine the " progressive " versus " regressive " aspect of the controversy on which opinions have remained sharply divided for almo...

A cusp singularity (V , p) is the germ of an isolated, normal surface singularity such that the exceptional divisor of the minimal resolution π : V → V is a cycle of smooth rational curves meeting transversely: π−1(p) = D = D1 + · · ·+Dn. The analytic germ of a cusp singularity is uniquely determined by the self-intersections D2 i of the components of D. Cusp singularities come in naturally dua...

We present lattice-gas modeling of the steady-state behavior in CO oxidation on the facets of nanoscale metal clusters, with coupling via interfacet CO diffusion. The model incorporates the key aspects of the reaction process, such as rapid CO mobility within each facet and strong nearest-neighbor repulsion between adsorbed O. The former justifies our use of a "hybrid" simulation approach treat...

A cusp catastrophe model Y. Xiao et al.

Recent observations at the magnetopause and of the high-latitude ionosphere, suggest that the cusp may be pulsed in nature. Specifically ground-based observations in the dayside auroral oval reveal transient optical features accompanied by bursts of enhanced plasma flow. Also, recent interpretation has shown cusp satellite data to be consistent with a burst of enhanced reconnection. In this pap...

The cusp bifurcation provides one of the simplest routes leading to bistability and hysteresis in neuron dynamics. We show that weakly connected networks of neurons near cusp bifurcations that satisfy a certain adaptation condition have quite interesting and complicated dynamics. First, we prove that any such network can be transformed into a canonical model by an appropriate continuous change ...

The implementation of the convective-upstream-split-pressure (CUSP) approach to numerical dissipation is presented for an approximately factored algorithm in conjunction with time-derivative local preconditioning. An inexpensive  ux limiter is used to blend the lowand high-order CUSP dissipation to capture shocks without oscillations. The resulting algorithm is applied to several subsonic and ...