Bu çalışma kapsamında C16 ve C25 beton dayanım sınıflarında üretilmiş olan 100x200 mm ebatlarındaki silindir numuneler bazalt elyaf takviyeli polimerlerle yanal olarak güçlendirilmiş bu güçlendirilen numunelerin donma/çözülme sıcaklık etkisi altındaki davranışları incelenmiştir. Sıcaklık etkisinin inceleneceği 25 °C, 60 100 °C 150 sıcaklıklara 12 saat süresince maruz bırakılmış daha sonra basın...

Abstract This study evaluated the influence of heating temperature variability on degradation level concrete by varying exposure temperatures (200°C, 450°C, and 800°C) design strength (C25 C40). The concretes were submitted to ultrasound tests (before after heating) then ruptured axial compression. After rupture, samples taken from fracture section specimens for microstructural analysis scannin...

A novel bacterial strain was isolated from industrially contaminated waste water. In the presence of crude oil, this shown to reduce rate total petroleum hydrocarbons (TPH) up 97.10% in 24 h. This bacterium subsequently identified by 16S rRNA gene sequence analysis and affiliated Serratia genus RDP classifier. Its genome sequenced annotated, genes coding for catechol 1,2 dioxygenase naphthalene...

This paper studies the internationalization behaviour of French companies, using more than 330.000 observations for three two-year intervals. We analyze the role of productivity, organisational and ownership structure, and of fi nancial characteristics for the decision to enter into and exit from foreign markets. High levels of productivity are documented to be characteristic of companies decid...

In this paper we examine whether variation in investors’ demand for risky assets is associated with recoveries on defaulted debt securities. Our examination is motivated by the prediction of standard portfolio separation theorems that an increase in aggregate investor risk aversion is associated with a decrease in the demand for the market portfolio of risky assets. Motivated by this prediction...

Prenylation reactions play crucial roles in controlling the activities of biomolecules. Bacterial prenyltransferases, TleC from Streptomyces blastmyceticus and MpnD from Marinactinospora thermotolerans, catalyse the 'reverse' prenylation of (-)-indolactam V at the C-7 position of the indole ring with geranyl pyrophosphate or dimethylallyl pyrophosphate, to produce lyngbyatoxin or pendolmycin, r...

We extend the Berry, Levinsohn and Pakes (BLP, 1995) random coefficients discretechoice demand model, which underlies much recent empirical work in IO. We add interactive fixed effects in the form of a factor structure on the unobserved product characteristics. The interactive fixed effects can be arbitrarily correlated with the observed product characteristics (including price), which accommod...

Empirical studies on the relationship between income and happiness commonly use standard ordered response models, the most well-known representatives being the ordered logit and the ordered probit. However, these models restrict the marginal probability effects by design, and therefore limit the analysis of distributional aspects of a change in income, that is, the study of whether the income e...

A statistical problem that arises in several fields is that of estimating the features of an unknown distribution, which may be conditioned on covariates, using a sample of binomial observations on whether draws from this distribution exceed threshold levels set by experimental design. Applications include bioassay and destructive duration analysis. The empirical application we consider is refe...

* Correspondence: [email protected]. vn Department of Scientific Fundamentals, Posts and Telecommunications Institute of Technology, Hanoi, Vietnam Full list of author information is available at the end of the article Abstract In this article, we present a new iteration method for finding a common element of the set of fixed points of p strict pseudocontractions and the set of solutions of equili...