Peters' anomaly is characterized by a central corneal opacity with corresponding defects in the posterior stroma, Descemet's membrane, and endothelium. We present 2 cases that showed corneal opacity when examined by topical endoscopic imaging (TEI). Case 1 was a 20-day-old neonatal female who had a central corneal opacity in the left eye. TEI showed that the iris stroma was adhered toward the b...

Opacity is a general approach for describing and unifying security properties expressed as predicates. A predicate is opaque if an observer of the system is unable to determine the satisfaction of the predicate in a given run of the system. The meaning of opacity is straightforward when considering the standard (qualitative) operational semantics, but there are a number of possible interpretati...

In connection with the recent suggestion by Tsytovich et al. [1] that opacity in the solar core could be overestimated, we consider the following questions: i) What would a 10% opacity reduction imply for the solar neutrino puzzle? ii) Is there any hope of solving the solar neutrino puzzle by changing opacity? iii) Is a 10% opacity reduction testable with helioseismological data? Recently Tsyto...

The objective of this study was to begin to quantify the benefits of a smoke opacity-based (SAE J1667 test) inspection and maintenance program. Twenty-six vehicles exhibiting visible smoke emissions were recruited: 14 pre-1991 vehicles and 12 1991 and later model year vehicles. Smoke opacity and regulated pollutant emissions via chassis dynamometer were measured, with testing conducted at 1609 ...

Page 57 § 1.1.2.: it is mentioned that some materials can cause serious corneal injury without appearing to change opacity or permeability immediately (e.g. mustard gas). Is this a specific observation for mustard gas or are other examples (agents) known which can induce damage without changes in opacity and/or permeability? Injury (cell death) without any change in opacity and/or permeability ...

Over the last decade, opacity of discrete event systems (DES) has become a very fertile field of research. Driven bysafety and privacy concerns in network communications and online services, much theoretical work has been conductedin order to design opaque systems. A system is opaque if an external observer in unable to infer a ”secret” about thesystem behavior. This paper aims to r...

Over the last decade, opacity of discrete event systems (DES) has become a very fertile field of research. Driven by safety and privacy concerns in network communications and online services, much theoretical work has been conducted in order to design opaque systems. A system is opaque if an external observer in unable to infer a ”secret” about the system behavior. This paper aims to review the...