Search results for "vine"

On-line photochemical derivatization and flow-injection spectrophotometric determination of ergonovine maleate

1993

Abstract A flow-injection manifold is proposed for the on-line photochemical derivatization of ergonovine maleate with application to pharmaceutical formulations. The procedure is based on the reaction with p-dimethylaminobenzaldehyde in presence of iron(III) and sulphuric acid medium. The reaction rate is improved by irradiation of the solution with a mercury lamp (254.0 nm). The calibration graph is linear over the range 3–74 μg ml−1 ergonovine, with a mid-range R.S.D. of 1.7% and a sample throughput of 34 h−1. The influence of foreign compounds was tested.

2016

Raman spectroscopic data were obtained for (Mg,Fe)2SiO4 samples during compression to 57 GPa. Single crystals of San Carlos olivine compressed hydrostatically above 41 GPa showed appearance of a new “defect” peak in the 820–840 cm−1 region associated with SiOSi linkages appearing between adjacent Embedded Image tetrahedra to result in five- or sixfold-coordinated silicate species. Appearance of this feature is accompanied by a broad amorphous background. The changes occur at lower pressure than metastable crystalline transitions of end-member Mg2SiO4 forsterite (Fo-I) into Fo-II and Fo-III phases described recently. We complemented our experimental study using density functional theory (DFT…

Scrivere del Mezzogiorno.Processi di auto-orientalism nella Letteratura italiana

2014

Questo lavoro guarda al contributo che la letteratura italiana ha dato relativamente alla costruzione e alla sedimentazione, nell'immaginario comune e nella percezione pubblica, dell'identità geografica e culturale del Mezzogiorno, ovvero di quella «consapevolezza geopolitica» di cui parlava Edward Said a proposito di altre aree del globo. Per fare ciò, sono stati identificati e presi in esame due diversi momenti che nella storia d'Italia si sono contraddistinti per una forte ridiscussione dell'immagine delle regioni meridionali del paese. I decenni immediatamente successivi all'Unità, infatti, sono stati caratterizzati da ampi dibattiti in merito al ruolo che il Sud doveva avere all'intern…

A framework for intention-driven requirements engineering of innovative software products

2011

Requirements engineering is highly challenging particularly when designing innovative software products. This is so because there are no corresponding products, ultimate needs of actors are difficult to capture, the products may have unforeseeable impacts on the actors’ behavior, and it is hard to find out how value-added and competitive the product actually is. In this paper, we propose a novel framework for intention-driven requirements engineering of innovative software products, which combines technological, social and business viewpoints. We illustrate its use with a short example related to the domain of web mapping services and augmented reality. peerReviewed

Vanhemman alkoholin tai huumeiden käyttö lastensuojelun palvelutarpeen arvioinnin taustalla : minkälaisena lastensuojelun palvelutarpeen arvioinnin p…

2017

Tutkimuksen tehtävänä on selvittää, kuinka sosiaalityöntekijät perustelevat lastensuojelun palvelutarpeen arvioinnin prosessin aikana tekemiään päätöksiä, kun lastensuojeluilmoitus on tehty vanhemman päihteidenkäytön vuoksi. Päihteidenkäytön vaikutusta lapsiin ja perheisiin on tutkittu laajasti ja päihteiden käytön negatiivisista vaikutuksista perheiden hyvinvointiin on kiistattomat tulokset. Omien työkokemusten perusteella heräsi kiinnostus tutkia lastensuojelun puuttumisen kynnystä ja sitä suhtautuvatko sosiaalityöntekijät eri tavalla alkoholin käyttäjiin ja huumeiden käyttäjiin. Tarkoituksena on tarkastella sosiaalityöntekijöiden päätöksentekoa ja sitä minkälaisena lastensuojelun palvelu…

Multivariate statistical analysis for water demand modelling: implementation, performance analysis, and comparison with the PRP model

2015

Water demand is the driving force behind hydraulic dynamics in water distribution systems. Consequently, it is crucial to accurately estimate the actual water use to develop reliable simulation models. In this study, copula-based multivariate analysis was proposed and used for demand prediction for a given return period. The analysis was applied to water consumption data collected in the water distribution network of Palermo (Italy). The approach produced consistent demand patterns and could be a powerful tool when coupled with water distribution network models for design or analysis problems. The results were compared with those obtained using a classical water demand model, the Poisson re…

Multivariate Statistical Analysis for Water Demand Modeling

2014

The actual level of water demand is the driving force behind the hydraulic dynamics in water distribution systems. Consequently, it is crucial to estimate it as accurately as possible in order to result in reliable simulation models. In this paper, a copula-based multivariate analysis has been proposed and used for demand prediction for given return period. The analysis is applied to water consumption data collected in the water distribution network of Palermo (Italy). The approach showed to produce consisted demand patterns and to be a powerful tool to be coupled with water distribution network models for design or analysis problems. (C) 2014 Published by Elsevier Ltd.

Four- and five-phase peridotites from a continental rift system: evidence for upper mantle uplift and cooling at the Ross Sea margin (Antarctica)

1992

Upper mantle plagioclase+spinel- and spinel-peridotite xenoliths occur in basanitic and tephritic lavas of the 2.7 my to Recent Mt. Melbourne Volcanic Field (Antarctica). This field belongs to the Cenozoic McMurdo volcanic group which is located between the deep western trough of the Ross Sea rift system and the uplifted rift shoulder of the Transantarctic Mountains. Our samples cover the transition zone between rift and shoulder. We examined texture and composition of plagioclase+spinel and normal spinel peridotites and determined temperatures and pressures of formation using the internally consistent Ca-ol/cpx and 2px-thermobarometer of Kohler and Brey (1990) and Brey and Kohler (1990). D…

Review of group A rotavirus strains reported in swine and cattle

2013

Group A rotavirus (RVA) infections cause severe economic losses in intensively reared livestock animals, particularly in herds of swine and cattle. RVA strains are antigenically heterogeneous, and are classified in multiple G and P types defined by the two outer capsid proteins, VP7 and VP4, respectively. This study summarizes published literature on the genetic and antigenic diversity of porcine and bovine RVA strains published over the last 3 decades. The single most prevalent genotype combination among porcine RVA strains was G5P[7], whereas the predominant genotype combination among bovine RVA strains was G6P[5], although spatiotemporal differences in RVA strain distribution were observ…

In vitro reconstitution of rotavirus transcriptional activity using viral cores and recombinant baculovirus expressed VP 6

1993

International audience; Purified baculovirus-expressed group A rotavirus VP6 polypeptide was shown to be active in the recovery of the transcriptase activity associated with the reconstitution of the single-shelled rotavirus particle. Recombinant VP6 polypeptide was able to restore the transcriptional activity in purified viral cores from both SA-11 and RF rotavirus strains. Recombinant group C VP 6 (Cowden strain) is capable of binding as a trimer to group A viral core particles but unable to restore the transcriptase activity, suggesting that the binding of the polypeptide to cores is not the only requirement to restore the transcriptase activity. The VP 6 group A polypeptide was shown to…