INTEGRATED DATING OF THE CONSTRUCTION AND RESTORATION OF THE MODENA CATHEDRAL VAULTS (NORTHERN ITALY): PRELIMINARY RESULTS

After the last damaging earthquake in 2012, an anti-seismic reinforcement project of the cathedral of Modena was designed giving us the opportunity to investigate and date the building materials. Radiocarbon (14C), optically stimulated luminescence (OSL), and thermoluminescence (TL) dating techniques were performed on the vaults with the aim to (1) clarify the construction timing, (2) define the history of the restorations, and (3) explore the possible correlation of the main restoration works to the earthquake chronology deduced from the historic catalog. Preliminary results show that medieval older bricks were reused for most of the original construction. Only lime and non-gypsum mortar was used for the original construction in the 15th century and for later repair of damage caused by earthquakes in the 16th and 17th centuries. Gypsum mortar was used for later repair in the 18th century. The results show much stronger damage due to earthquakes than previously thought

Sailing into a dilemma : an economic and legal analysis of an EU trading scheme for maritime emissions

On the basis of a joint economic and legal analysis, we evaluate the effects of a “regional” (European) emission trading scheme aiming at reducing emissions of international shipping. The focus lies on the question which share of emissions from maritime transport activities to and from the EU can and should be included in such a system. Our findings suggest that the attempt to implement an EU maritime ETS runs into a dilemma. It is not possible to design a system that achieves emission reductions in a cost efficient manner and is compatible with international law

Teaching modern foreign languages in multilingual classrooms: an examination of Key Stage 2 teachers’ experiences

The statutory inclusion of modern foreign languages (MFL) into the Key Stage 2 curriculum in England in 2014 aimed to raise the language skills of younger learners in preparation for their secondary education. This change to the curriculum has occurred at a time in which the linguistic diversity within primary schools across the country has been consistently increasing. This study used Interpretative Phenomenological Analysis to qualitatively examine the impact of the curriculum change on teachers implementing it in multilingual classrooms in Greater Manchester. Six teachers with varying experience in teaching MFL participated in semistructured interviews focussing on different aspects of the curriculum change. This paper focuses on the teaching of MFL, as well as on teachers’ perceptions of English as an Additional Language (EAL) pupils’ aptitude for language learning in comparison to their monolingual peers. The superordinate themes identified from the data included the inconsistent delivery of MFL in primary schools, and the role of multilingual classrooms as opportunities for augmented MFL provision. The findings from this study will have implications for teachers, head teachers, and policy-makers regarding the effectiveness of the initial implementation of MFL into the primary curriculum, with specific reference to the EAL school population

Spectrophotometric determination of chromium as the chromium-peroxo-4-(2-pyridylazo)resorcinol complex

Der ternäre Chrom-Peroxo-PAR-Komplex weist einen scheinbaren molaren Extinktionskoeffizienten von 6280 l · mol −1 · cm −1 auf, wenn er aus 0,1 M schwefelsaurer Lösung mit Ethylacetat extrahiert wird. Das Beersche Gesetz wird bis zu 6,0 μg Cr/ml befolgt. Die Bedingungen für eine optimale Farbbildung, die Zusammensetzung des Komplexes, die Wirkung verschiedener Begleitionen und die Anwendung auf Stähle werden beschrieben. The ternary complex chromium-peroxo-PAR exhibits an apparent molar absorptivity of 6280 l mol −1 cm −1 when extracted into ethyl acetate from 0.1 M sulfuric acid solution. Beer's law is followed for solutions containing up to 6.0 μg Cr ml −1 . Conditions for optimum color formation, complex composition, effects of diverse ions, and application to the determination of chromium in steels are described.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/46457/1/216_2004_Article_BF00480608.pd

Exploring the Ambiguity of Operation Sophia Between Military and Search and Rescue Activities

Over the past decade, for the purpose of managing the phenomenon of migration by sea, a wide number of different measures have been adopted by the European Union and its Member States. Notwithstanding the persistent need and the legal obligation to save people's lives at sea, Europe remains stocked on the protection of the security of its internal and external borders and goes ahead with the launch of Eunavfor Med--Operation Sophia, the first naval mission aimed to disrupt the business model of migrant smuggling and human trafficking in the Mediterranean. The following chapter examines the factual and legal background behind the establishment of this military mission and focuses on two sensitive and interrelated aspects: the use of enforcement powers against alleged smugglers and traffickers on the one hand and the rescue of irregular migrants at sea on the other hand. While various challenges prevent the activation of the crucial military phase of Operation Sophia, the operational and legal framework applicable to incidental search and rescue interventions carried out by its naval forces appears rather unclear and problematic under different perspectives of international law, especially if the Operation will continue into Libyan territorial waters in cooperation with its unstable authorities

Inductively coupled plasma mass spectrometric detection for multielement flow injection analysis and elemental speciation by reversed-phase liquid chromatography

The feasibility of using an inductively coupled plasma mass spectrometer as a muitieiement detector for flow injection analysis (FIA) and ion-pair reversed-phase liquid chromatography was investigated. Sample introduction was by uitrasonk nebulization with aerosol desolvation. Absolute detecton limits for FIA ranged from 0.01 to 0.1 ng for most elements using 10-pL injections. Over 30 elements were surveyed for their response to both anionic and cationic ion pairing reagents. The separation and selective detection of various As and Se species were demonstrated, yielding detection limits near 0.1 ng (as element) for ail six species present. Determination of 15 elements in a single injection with multiple ion monitoring produced shniiar detection limits. Isotope ratios were measured with sufficient precision (better than 2%) and accuracy (about 1 %) on eluting peaks of Cd and Pb to demonstrate that liquid chromatographyhductively coupled plasma mass spectrometry should make speciation studies with stable tracer isotopes feasible

HPTLC simultaneous quantification of triterpene acids for quality control of Plantago major L. and evaluation of their cytotoxic and antioxidant activities

A validated high performance thin-layer chromatography (HPTLC) method was developed for simultaneous determination of ursolic acid (UA) and oleanolic acid (OA) contents in Plantago major which were collected from several plantation areas in Indonesia. The cytotoxic effect against two cancer cell lines, SiHa and Hep G2, and antioxidant activity were evaluated using the MTT and DPPH-radical scavenging assay, respectively. The test samples included various extracts of P. major from different plant parts using methanol and water as extracting solvents and pure compounds derived from this plant. The results showed that both plant parts and extracting solvents affected the chemical contents and their biological activities. The contents of UA and OA varied according to the organs and provenances of plant. The highest content of UA (0.22–0.48% dry weight) and OA (0.17–0.33% dry weight) were found in the methanol extract of seed. This extract also exhibited the highest cytotoxic activity (IC50 value: 174.42–246.38 μg/ml), whereas the strongest free radical scavenging activity was obtained from the leaf methanol extract (IC50 value: 263.57 μg/ml). The developed HPTLC method can be used for routine analysis and standardization of P. major crude drugs, extracts, and/or finished products using UA and OA as appropriate markers for anticancer products