OBJECTIVE To evaluate human corneas after laser-assisted in situ keratomileusis at different postoperative intervals. METHODS Thirty-eight postmortem corneas from 20 patients with postoperative intervals from 2 months to 6.5 years after laser-assisted in situ keratomileusis surgery were collected from eye banks. The corneas were trisected and processed for conventional histologic analysis, tr...

This article presents a segmentation model applied to musician movements, taking into account different time structures. In particular we report on ancillary gestures that are not directly linked to sound production, whilst still being entirely part of the global instrumental gesture. Precisely, we study movements of the clarinet captured with an optical 3D motion capture system, analyzing anci...

In this paper, we present a composite event detection system for multicamera surveillance networks. The proposed framework is able to handle correlations between primitive events that are generated from either a single camera view or multiple camera views with spatial and temporal variations. Composite events are represented in the form of full binary trees, where the leaves nodes represent pri...

Primitive  neuroectodermal  tumor  (PNET)  of  kidney  is  an  extremely  rare  renal  neoplasm  with only about fifty reported cases in literature.  Presumably,of neural crest origin, these tumors behave  aggressively  and  carry  a  poor prognosis.  We  report  a  case  of  22-year  old  female  patient complaining of left loin pain with recurrent hematuria for last 3 months. On clinical ex...

In vertebrates, the heart is the first organ to develop and takes shape during the third week of embryogenesis. The earliest evidence of a heart structure can be identified beginning from day 15 of pregnancy. Stem cells in the anterior–lateral mesoderm become specific cardiac precursor cells and align in a horseshoe shape. In the third week of pregnancy these heart precursor cells that are prev...

Copying and counting are useful primitive operations for computation and construction. We have made DNA crystals that copy and crystals that count as they grow. For counting, 16 oligonucleotides assemble into four DNA Wang tiles that subsequently crystallize on a polymeric nucleating scaffold strand, arranging themselves in a binary counting pattern that could serve as a template for a molecula...

By combining transmission electron microscopy (TEM), scanning electron microscopy (SEM) and immunocytochemistry at both light and TEM levels the organization of actin in early chick ectoderm has been demonstrated. Every cell is encircled by a ring of actin filaments which are associated with apically situated intercellular junctions. In this way the actin ring of each individual cell is connect...