Interpretations of Individualistic and Collectivistic Drinking Messages in Beer Commercials by Teenagers from Five European Countries

The study is a qualitative investigation into European teenagers’ meaning-making of beer commercials with individualistic and collectivistic drinking messages. The subjects were teenagers (aged 13–16) from Finland, Germany, Italy, the Netherlands and Poland. Eight (8) focus group interviews were conducted in each country, with a total of 267 participants. Beer commercials acted as stimuli for the group discussions. The adolescents’ speech in these discussions was analysed for the perceived positive outcomes of drinking alcohol and for perceptions of competence attached to drinking. The speech of the participants is juxtaposed to a semiotic reading of the commercials and differences between the groups are explained by cultural differences. Key words: Drinking cultures; Teenagers; Beer commercials; RAGI; Collectivistic and individualistic culturesResumé: L'étude est une enquête qualitative sur la signification perçue par les adolescents européens vis-à-vis des publicités de bière avec des messages individualistes et collectivistes. Les sujets d’étude étaient des adolescents (âgés de 13-16) de la Finlande, de l'Allemagne, de l'Italie, des Pays-Bas et de la Pologne. Huit (8) groupes d’entretien ont été menés dans chaque pays, avec un total de 267 participants. Les publicités de bière ont été utilisées comme des stimuli pour activer les discussions de groupe. Les discours des adolescents dans ces discussions ont été analysés pour les résultats positifs perçus de la consommation d'alcool et la perception des compétences associées à l'alcoolisme. Les discours des participants sont juxtaposés à une lecture sémiotique des publicités et les différences entre les groupes sont expliquées par les différences culturelles.Mots-clés: cultures de vin; adolescents; publicités de bière; RAGI; culture collectiviste et individualist

Petrology and Geochemistry of Volcanic Rocks from the South Kauaʻi Swell Volcano, Hawaiʻi: Implications for the Lithology and Composition of the Hawaiian Mantle Plume

The South Kauaʻi Swell (SKS) volcano was sampled during four JASON dives and three dredge hauls recovering rocks that range from fresh pillow lavas to altered volcanic breccias. Two geochemical groups were identified: shield-stage tholeiites (5·4–3·9 Ma) and rejuvenation-stage alkalic lavas (1·9–0·1 Ma). The young SKS ages and the coeval rejuvenated volcanism along a 400km segment of the Hawaiian Islands (Maui to Niʻihau) are inconsistent with the timing and duration predictions by the flexure and secondary plume melting models for renewed volcanism. The SKS tholeiites are geochemically heterogeneous but similar to lavas from nearby Kauaʻi, Niʻihau and Waiʻanae volcanoes, indicating that their source regions within the Hawaiian mantle plume sampled a well-mixed zone. Most SKS tholeiitic lavas exhibit radiogenic Pb isotope ratios (208Pb*/206Pb*) that are characteristic of Loa compositions (>0·9475), consistent with the volcano’s location on the west side of the Hawaiian Islands. These results document the existence of the Loa component within the Hawaiian mantle plume prior to 5 Ma. Loa trend volcanoes are thought to have a major pyroxenite component in their source. Calculations of the pyroxenitic component in the parental melts for SKS tholeiites using high-precision olivine analyses and modeling of trace element ratios indicate a large pyroxenite proportion (≥50%), which was predicted by recent numerical models. Rejuvenation-stage lavas were also found to have a significant pyroxenite component based on olivine analyses (40–60%). The abundance of pyroxenite in the source for SKS lavas may be the cause of this volcano’s extended period of magmatism (>5 Myr). The broad distribution of the Loa component in the northern Hawaiian Island lavas coincides with the start of a dramatic magma flux increase (300%) along the Hawaiian Chain, which may reflect a major structural change in the source of the Hawaiian mantle plume

Generation of aurachin derivatives by whole-cell biotransformation and evaluation of their antiprotozoal properties

The natural product aurachin D is a farnesylated quinolone alkaloid, which is known to possess activity against the causative agent of malaria, Plasmodium spp. In this study, we show that aurachin D inhibits other parasitic protozoa as well. While aurachin D had only a modest effect on Trypanosoma brucei rhodesiense, two other trypanosomatids, T. cruzi and Leishmania donovani, were killed at low micromolar and nanomolar concentrations, respectively, in an in vitro assay. The determined IC50 values of aurachin D were even lower than those of the reference drugs benznidazole and miltefosine. Due to these promising results, we set out to explore the impact of structural modifications on the bioactivity of this natural product. In order to generate aurachin D derivatives with varying substituents at the C-2, C-6 and C-7 position of the quinolone ring system, we resorted to whole-cell biotransformation using a recombinant Escherichia coli strain capable of aurachin-type prenylations. Quinolone precursor molecules featuring methyl, methoxy and halogen groups were fed to this E. coli strain, which converted the substrates into the desired analogs. None of the generated derivatives exhibited improved antiprotozoal properties in comparison to aurachin D. Obviously, the naturally occurring aurachin D features already a privileged structure, especially for the inhibition of the causative agent of visceral leishmaniasis

Oxygen isotope variations in lavas from the ongoing Puu Oo eruption of Kilauea volcano

Previous oxygen isotope work on Hawaiian tholeiitic lavas has shown substantial variations for fresh lavas and glass (δ^(18)O = 4.6-5.7; Kyser et al. 1982; Garcia et al. 1989), which were interpreted to reflect isotopic differences between mantle sources. To better understand the cause of O isotope variation in these rocks, we analyzed lavas from the Puu Oo eruption. Pristine glasses from this 12 year old, east rift zone eruption of Kilauea show the same wide O isotopic range. This is quite remarkable given that the O isotope range for most MORB glasses is only 5.7 per mil (Ito et al. 1987). Glasses from the early part of the Puu Oo eruption, a period when mixed magmas were erupted, have the lowest ratios (δ^(18)O = 4.6-4.8). The glass O isotope value increased 0.5 per mil following a shift in the vent location to 3 km downrift and the eruption style changed from episodic to continuous. During this continuous phase of activity, the oxygen isotope value of the Puu Oo glasses gradually decreased 0.2 per mil over the next two years and has remained nearly constant for the last 5 years, except for a sample taken just after a collapse of the Puu Oo cone into its shallow magma reservoir; it is 0.7 per mil higher. In contrast to the large variations in glass O isotope values, olivines from these lavas have remained nearly constant (δ^(18)O = 4.8±0.1). Thus, the O isotope variations in the glass formed after the growth of the olivines. These results indicate that crustal processes are involved in modifying O isotope values. The low O isotope values in the early mixed lavas probably reflect contamination of rift zone stored magma by assimilation of hydrothermally altered crust (Kilauea hydrothermal fluids have low O isotope values, <0). The high ratio in the late lava (δ^(18)O = 5.7) may be related to assimilation of the vapor altered, Puu Oo cone material. Our results indicate that caution should used when interpreting O isotope values, even for pristine, relatively mafic lavas (7-10 wt% MgO)

Temporal geochemical variations in lavas from Kīlauea's Pu‘u ‘Ō‘ō eruption (1983–2010): Cyclic variations from melting of source heterogeneities

[1] Geochemical time series analysis of lavas from Kīlauea's ongoing Pu‘u ‘Ō‘ō eruption chronicle mantle and crustal processes during a single, prolonged (1983 to present) magmatic event, which has shown nearly two-fold variation in lava effusion rates. Here we present an update of our ongoing monitoring of the geochemical variations of Pu‘u ‘Ō‘ō lavas for the entire eruption through 2010. Oxygen isotope measurements on Pu‘u ‘Ō‘ō lavas show a remarkable range (δ^(18)O values of 4.6–5.6‰), which are interpreted to reflect moderate levels of oxygen isotope exchange with or crustal contamination by hydrothermally altered Kīlauea lavas, probably in the shallow reservoir under the Pu‘u ‘Ō‘ō vent. This process has not measurably affected ratios of radiogenic isotope or incompatible trace elements, which are thought to vary due to mantle-derived changes in the composition of the parental magma delivered to the volcano. High-precision Pb and Sr isotopic measurements were performed on lavas erupted at ∼6 month intervals since 1983 to provide insights about melting dynamics and the compositional structure of the Hawaiian plume. The new results show systematic variations of Pb and Sr isotope ratios that continued the long-term compositional trend for Kīlauea until ∼1990. Afterward, Pb isotope ratios show two cycles with ∼10 year periods, whereas the Sr isotope ratios continued to increase until ∼2003 and then shifted toward slightly less radiogenic values. The short-term periodicity of Pb isotope ratios may reflect melt extraction from mantle with a fine-scale pattern of repeating source heterogeneities or strands, which are about 1–3 km in diameter. Over the last 30 years, Pu‘u ‘Ō‘ō lavas show 15% and 25% of the known isotopic variation for Kīlauea and Mauna Kea, respectively. This observation illustrates that the dominant time scale of mantle-derived compositional variation for Hawaiian lavas is years to decades

Use of traditional knowledge by the United States Bureau of Ocean Energy Management to support resource management

Professionals who collect and use traditional knowledge to support resource management decisions often are preoccupied with concerns over how and if traditional knowledge should be integrated with science. To move beyond the integration dilemma, we treat traditional knowledge and science as distinct and complementary knowledge systems. We focus on applying traditional knowledge within the decision-making process. We present succinct examples of how the Bureau of Ocean Energy Management has used traditional knowledge in decision making in the North Slope Borough, Alaska: 1) using traditional knowledge in designing, planning, and conducting scientific research; 2) applying information from both knowledge systems at the earliest opportunity in the process; 3) using traditional knowledge in environmental impacts assessment; 4) consulting with indigenous leaders at key decision points; and 5) applying traditional knowledge at a programmatic decision level. Clearly articulating, early in the process, how best to use traditional knowledge and science can allow for more complete and inclusive use of available and pertinent information

Copper-catalyzed diastereo- and enantioselective desymmetrization of cyclopropenes: Synthesis of cyclopropylboronates

This document is the accepted manuscript version of a Published Work that appeared in final form in Journal of American Chemical Society 136.45, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see DOI: 10.1021/ja510419zA novel Cu-catalyzed diastereo- and enantioselective desymmetrization of cyclopropenes to afford nonracemic cyclopropylboronates is described. Trapping the cyclopropylcopper intermediate with electrophilic amines allows for the synthesis of cyclopropylaminoboronic esters and demonstrates the potential of the approach for the synthesis of functionalized cyclopropanesWe thank the European Research Council (ERC-337776) and MINECO (CTQ2012-35957) for financial support. M. T. and A. P. thank MICINN for RyC and JdC contract

Animal or Plant: Which Is the Better Fog Water Collector?

Occasional fog is a critical water source utilised by plants and animals in the Namib Desert. Fog basking beetles (Onymacris unguicularis, Tenebrionidae) and Namib dune bushman grass (Stipagrostris sabulicola, Poaceae) collect water directly from the fog. While the beetles position themselves optimally for fog water collection on dune ridges, the grass occurs predominantly at the dune base where less fog water is available. Differences in the fog-water collecting abilities in animals and plants have never been addressed. Here we place beetles and grass side-by-side in a fog chamber and measure the amount of water they collect over time. Based on the accumulated amount of water over a two hour period, grass is the better fog collector. However, in contrast to the episodic cascading water run-off from the grass, the beetles obtain water in a steady flow from their elytra. This steady trickle from the beetles' elytra to their mouth could ensure that even short periods of fog basking – while exposed to predators – will yield water. Up to now there is no indication of specialised surface properties on the grass leafs, but the steady run-off from the beetles could point to specific property adaptations of their elytra surface