background: the purpose of this study was to compare the effi cacy of endovac irrigation system and side-vented closed ended needle (max-i probe) in removing smear layer from root canals at 1 mm and 3 mm from working length using protaper rotary instrumentation. materials and methods: a total of 50 freshly extracted maxillary central incisors were randomly divided into two groups after complete...

We present the development of a neutron detector array module made with $\textit{para}$-terphenyl, bright, fast, n/$\gamma$ discriminating crystalline organic scintillator. The is comprised 2 cm $\times$ $\textit{p}$-terphenyl crystals that have been optically coupled together to create $\textit{pseudo-bar}$ module. While only relying on two photo detectors, capable distinguishing interactions ...

A data structure that explicitly stores the mininum possible structure will be more compact. Surprisingly, this may also lead to simpler algorithms. For example, how simple can a polyhedron P be? Consider the set of faces, F = {fi}. That permits the following operations 1. Inclusion determination: Point x is contained in P iff a semi-infinite ray from x crosses an odd number of fi. 2. Volume co...

BACKGROUND the frailty index (FI) is an approach to the operationalisation of frailty based on accumulation of deficits. It has been less studied in Europeans. OBJECTIVE to construct sex-specific FIs from a large sample of Europeans and study their associations with age and mortality. DESIGN longitudinal population-based survey. SETTING the Survey of Health, Ageing and Retirement in Europ...

let $mathbb{f}$ be an algebraically closed field of prime characteristic $p>2$ and $(g, [p])$ a finite-dimensional restricted lie superalgebra over $mathbb{f}$. it is showed that anyfinite-dimensional indecomposable $g$-module is a module for a finite-dimensional quotient of the universal enveloping superalgebra of $g$. these quotient superalgebras are called the generalized reduced enveloping ...

BACKGROUND Frailty is an independent risk factor for cardiovascular outcomes. However, its trajectory after coronary artery disease treatment is unknown. METHODS AND RESULTS Three hundred seventy-four patients undergoing nonemergent cardiac catheterization followed by treatment (ie, 128 coronary artery bypass graft [CABG], 150 percutaneous coronary intervention [PCI], 96 medical therapy only)...

INTRODUCTION hip fracture is expensive in terms of mortality, hospital length of stay (LOS) and consequences for independence. Poor outcome reflects the vulnerability of patients who typically sustain this injury, but the impact of different comorbidities and impairments is complex to understand. We consider this in a prospective cohort study designed to examine how a patients' frailty index (F...

BACKGROUND In older adults admitted to intensive care units (ICUs), frailty influences prognosis. We examined the relationship between the frailty index (FI) based on deficit accumulation and early and late survival. METHODS Older patients (≥65 years) admitted to a specialized geriatric ICU at the Liuhuaqiao Hospital, Guangzhou, China between July-December 2011 (n = 155; age 82.7±7.1 y; 87.1%...

AIMS To investigate swept-source optical coherence tomography (OCT) angiography in the optic nerve head (ONH) and parafoveal regions in patients with multiple sclerosis (MS). METHODS Fifty-two MS eyes and 21 healthy control (HC) eyes were included. There were two MS subgroups: 38 MS eyes without an optic neuritis (ON) history (MS -ON), and 14 MS eyes with an ON history (MS +ON). The OCT image...