lumbar hernias (lh) accounts for less than 1.5% of total hernia incidence. it can occur in two separate triangular areas of the flank. about 300 cases have been reported in the literature. here, we report a 55-year old man with acute painful left side flank mass and final diagnosis of lh. the mass was appeared about three hours before admission and his pain was slight at first but became more s...

two new species of an arbacioid echinoid, genus goniopygus, are reported for the first time from aptiansediments of baghin area, kerman, iran. the main features of the species lie in apical disc and peristomediameter. in goniopygus triangularis sp. nov., the periperoct is triangular in shape with three small, sunkentubercles, located alternatively adjacent to the periperoct, while goniopygus an...

Figure Number Page 1.1 CT scans (axial view) and liver segmentation. The first column shows the CT scans and the second column shows the corresponding ground truth liver segmentation.. 2.2 A set of training CT volumes. The colors represent the intensity values in the CT volumes. The shape of an organ is represented by a triangular mesh model. A triangular mesh that contains three vertex points,...

OBJECTIVE When utilizing a single implant-supported crown to replace a central incisor, understanding the final shape of the implant restoration is an important factor to help achieve a successful esthetic outcome. In today's dentistry, tooth shape is a critical factor when dental implant prostheses are considered in the esthetic zone. The major esthetic goal for this type of restoration is to ...

We introduce a new algorithm to convert triangular meshes of polygonal regions, with or without holes, into strictly convex quadrilateral meshes of small bounded size. Our algorithm includes all vertices of the triangular mesh in the quadrilateral mesh, but may add extra vertices (called Steiner points). We show that if the input triangular mesh has t triangles, our algorithm produces a mesh wi...

Vector quantization is an eecient compression technique for which many variants are known. Product code vector quantizers use multiple codebooks for coding separately features of a vector. In shape-gain and mean-shape-gain vector quantizers, the bottleneck in the encoder is a nearest neighbor search on a hypersphere. We deene an angular constraint for speeding up the search in shape-gain and me...

The application of finite element ranging from biomedical engineering. Biomechanics is fundamental to any dental implant design. Strengths at any points in the construction are critical and govern failure of the prostheses, remoulding of bone and type of tooth movement. In our study Finite Element Analysis were performed to find out the best thread shape by comparing stress induced in cortical ...

Proposed in this paper is an efficient algorithm to remove self-intersections from the raw offset triangular mesh. The resulting regular mesh can be used in shape inflation, tool path generation, and process planning to name a few. Objective is to find the valid region set of triangles defining the outer boundary of the offset volume from the raw offset triangular mesh. Starting with a seed tri...

A new planar bow-tie antenna is proposed here for UWB applications. The self-complementary principle has been applied to a planar triangular monopole antenna along with bending the microstrip feed line. The antenna has a wider frequency band compared to the traditional bow-tie antenna, complies with the UWB requirements and it is directly matched to the (SMA) connector via 50Ω microstrip feed l...