introduction: the ideal endodontic treatment for the teeth with in complete root-ends and necrotic pulps may involve the use of material which forms an immediate apical barrier instead of long term calcium hydroxide therapy. such procedure may lead us to a single appointment endodontic treatment. the purpose of the present study was to evaluate clinical and radiographic success rate in necrotic...

This article describes the results of a response surface model (RSM)-based numerical optimization campaign for spray-guided spark assistance at cold operations in heavy-duty gasoline compression ignition (GCI) engine. On basis an earlier work on spark-assisted GCI combustion, space-filling design experiments (DoE) method was first undertaken to investigate multitude hardware variables and engin...

This research aims to compare the potential and existing conditions of a small-sized spark ignition (SI) engine with 1.0-liter capacity suitable for cylinder deactivation. The deactivation strategy is used solve issues inefficient combustion increased exhaust emission under part loading. Consequently, possibility implementing in terms decreased pollution has been assessed. A computerized, 1.0-l...

Spark is a new promising platform for scalable data-parallel computation. It provides several high-level application programming interfaces (APIs) to perform parallel data aggregation. Since execution of parallel aggregation in Spark is inherently non-deterministic, a natural requirement for Spark programs is to give the same result for any execution on the same data set. We present PURESPARK, ...

Ca(+) sparks are vascular smooth muscle cell (VSMC) Ca(2+)-release events that are mediated by ryanodine receptors (RyR) and promote vasodilation by activating large-conductance Ca(2+)-activated potassium channels and inhibiting myogenic tone. We have previously reported that exposing rats to intermittent hypoxia (IH) to simulate sleep apnea augments myogenic tone in mesenteric arteries through...

The concept of minimum ignition energy (MIE) has traditionally formed the basis for studying ignition hazards of fuels. However, the viewpoint of ignition as a statistical phenomenon appears to be more consistent with the inherent variability in engineering test data. We have developed a very low-energy capacitive spark ignition system to produce short sparks with fixed lengths of 1 to 2 mm, an...