( o ( a p bstract his study evaluated the histomorphologic response of uman dental pulps capped with mineral trioxide agregate (MTA) and Ca(OH)2 cement (CH). Pulp expoures were performed on the occlusal floor of 40 human ermanent premolars. After that, the pulp was capped ither with CH or MTA and restored with composite esin. After 30 and 60 days, teeth were extracted and rocessed for histologi...

The use of litter and manure in welfare-oriented systems for laying hens may negatively affect the air quality and the work environment. The objective of the current case study was to compare concentrations of ammonia, dust and bacteria in 3 such systems: 1) a floor housing system, 2) a multilevel system, and 3) a system with furnished cages. Data was collected from 3 houses of each type, and 1...

In this paper, we present a real-time obstacle detection system for the mobility improvement for the visually impaired using a handheld Smartphone. Though there are many existing assistants for the visually impaired, there is not a single one that is low cost, ultra-portable, non-intrusive and able to detect the low-height objects on the floor. This paper proposes a system to detect any objects...

Forward error correction is a feasible approach to decline the bit error floor of lightwave systems, arising from the fact that a simple single-error-correcting code can reduce the error floor from O(P,) to O(P'). Here we propose a novel wavelength demultiplexer (WDM) coding system using product code to improve performances of WDM systems with an error floor caused by fiber dispersion or system...

Introduction. The bone volume of the posterior maxilla may not be appropriate for implant placement, due to factors such as pneumatized maxillary sinus. The purpose of this study was to evaluate the percentage of graft volume reduction following sinus floor elevation (SFE), with either slow resorbable bone substitute only or a composite of slow and fast resorbable bone substitutes, using cone b...