purpose : the first report of electroretinographic changes following the intravitreal injection of carboplatin in a patient with retinoblastoma case report : recurrent tumors after chemoreduction and adjunctive local treatment in a case of familial unilateral retinoblastoma, group c, was treated with intravitreal carboplatin (10 µg) injections. results : the tumor was regressed after 3 injectio...

purpose: to report visual outcomes of pars plana vitrectomy in severely traumatized eyes with no light perception (nlp) and flat electroretinography (erg) methods: we performed a prospective interventional study on 22 severely traumatized eyes with nlp, 4+ relative afferent pupillary defect (rapd) and flat erg. results: one year after pars plana virectomy, 15 patients (68.18%) had nlp, six pati...

purpose : to evaluate the incidence of leber’s congenital amaurosis (lca) in low vision children referred to electrophysiology ward of farabi eye hospital , and review the clinical features of disease and electroretiongraphy (erg) test values to confirm the diagnosis and severity of the disease in iran . design: prospective observational case series methods : two-hundred and fifteen cases of lo...

A method for the extraction of the Extended Reeb Graph (ERG) from a closed 3D triangular mesh is presented. The ERG codes the relationships among critical points of the height function associated to the mesh, and it can represent isolated as well as degenerate critical points. The extraction process is based on a re-meshing strategy of the original mesh, which is forced to follow contour levels...

The XMM–Newton data presented here are the first X–ray observation of the Seyfert 2 galaxy NGC4138. Although the galaxy has been pointed by ROSAT– HRI, it was not detected, with a flux upper limit of about 1.1×10−13 erg cm−2 s−1 in the 0.2−2.4 keV energy band1. XMM–Newton performed the observation on 26 November 2001. The source is detected for the first time in X–rays with F0.2−2.4 = 1.0 × 10−...

We report on the discovery of a diffuse X-ray source with ASCA, presumably associated with a molecular cloud in the vicinity of the supernova remnant RX J1713.7−3946. The energy spectrum (1–10 keV) of the hard X-ray source shows a flat continuum, which is described by a power-law with a photon index of Γ = 1.0 −0.3. We argue that this unusually flat spectrum can be best interpreted in terms of ...

Wind regime and sand grain size are two of the factors that determine the morphology and dynamics of sand dunes in desert areas. Regarding the importance of wind effects on sand dunes especially in Iran, in this study, Khartooran Erg was analyzed to determine wind direction and to detect sand source sites. Khartooran Erg is located on eastern north of Iran and lies in Khorasan Razavi and Semnan...

results a total number of 43 specimens were studied, from which 9 were obtained from patients with metastatic prostate cancer. the expression of five examined genes had no correlation with psa level and gleason score. the expression of amacr decreased in metastatic prostate cancer (p = 0.02). the expression of other genes showed no difference between metastatic and non-metastatic tumors (p > 0....