Interval arithmetic has been considered as a step forward to counter numerical robustness problem in geometric and solid modeling. The interval arithmetic boundary representation (Brep) scheme was developed to tackle this problem. In constructing an interval B-rep solid, robust and efficient computation of intersections between the bounding surfaces of the solid is a critical issue. To address ...

Internally Transcribed Spacers (ITS) characterization and distribution of Repetitive Extragenic Palindromic (REP) sequences were studied in the genome of 223 field isolates of Bacillus thuringiensis from Madurai, India. They were characterized by morphological, biochemical and molecular methods. One hundred and twenty four of a total 223 isolates fitted ITS characterization of B. thuringiensis ...

The purpose of this work is to define a new algorithm for converting a CSG representation into a B-Rep representation. Usually this conversion is done determining the union, intersection or difference from two B-Rep represented solids. We will define another approach where the space used by the solids is determined as a volumetric representation. Then, using the volumetric representation a B-Re...

In this study, we introduce new algorithms for efficient function representation (F-rep) based geometric design using the sparse and dynamic voxel data structure Volumetric Dynamic B+ tree (VDB). The level set method is used as F-rep method. Specifically, develop Fast Sweeping Method boundary points to surfaces velocity extension geometry optimization on such structures. For benchmarking, devel...

The effects of recombinant human erythropoietin (rEp) on murine hematopoietic progenitors were studied using a serum-free culture. A high concentration of rEp stimulated the formation of mixed erythroid-megakaryocyte colonies (EM colonies) and blast cell colonies, as well as erythroid colonies, erythroid bursts, and megakaryocyte colonies from normal mouse bone marrow cells. Direct effects of r...