background: application of bonding agents (ba) into deep cavities and light curing them might increase pulpal temperature and threaten its health. the purpose of this study was to evaluate temperature rise of pulp by light curing six ba using two different light curing units (lcu), through a dent in wall of 0.5 mm. materials and methods: this in vitro experiment was carried out on 96 slices of ...

This paper investigates the pyrolysis of PODEn (n = 3, 4, 5) using ReaxFF molecular dynamics simulation. A large-scale model, which contains 2000 molecules, is simulated at 3000 K. The higher frequencies initial decomposition reaction α or β C-O bond show that in not easy to break, approximately half number other type dissociation. Furthermore, dissociation energies (BDEs) are calculated method...

We estimate the price elasticity of residential district heating demand in Denmark using Blundell–Bond two-step generalized method moments (GMM) estimator and a sample 152,913 observations covering period 2015 to 2019. Moreover, we analyze heterogeneity response increases among various household groups investigate distributional consequences policies that increase heating. To this end, measure ...

bonding brackets to the enamel surface has gained much popularity today. new adhesive systems have been introduced and marketed and a considerable increase in research regarding bond strength has been published. a considerable amount of these studies deal with shear bond strength of adhesives designed for orthodontic purpose. previous studies have used variety of test designs. this diversity in...

Even though steel bar is a conventional reinforcement in soil stabilization systems, the problem of corrosion of steel may lead to vast damages especially in aggressive environments. In the past decades, Fiber Reinforced Polymer (FRP) materials have offered an effective solution to overcome the corrosion problem. Despite numerous bond stress-displacement models for reinforcements in concrete, t...

We use identification robust tests to show that difference (Dif), level (Lev), and nonlinear (NL) moment conditions, as proposed by Arellano Bond (1991, Review of Economic Studies 58, 277–297), Ahn Schmidt (1995, Journal Econometrics 68, 5–27), Bover 29–51), Blundell (1998, 87, 115–143) for the linear dynamic panel data model, do not separately identify autoregressive parameter when its true va...

Purpose The main goal of this paper is to study the influence some corporate governance, social responsibility (CSR), and corporate-specific characteristics on performance Iberian-listed companies. Design/methodology/approach To achieve paper's aim, authors have used data from 33 Portuguese-listed companies, 60 Spanish-listed for period 2011 2018. test hypotheses, employed generalized method mo...