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Meta-analysis reveals that pollinator functional diversity and abundance enhance crop pollination and yield

How insects promote crop pollination remains poorly understood in terms of the contribution of functional trait differences between species. We used meta-analyses to test for correlations between community abundance, species richness and functional trait metrics with oilseed rape yield, a globally important crop. While overall abundance is consistently important in predicting yield, functional div

Supercapacitor/biofuel cell hybrid device employing biomolecules for energy conversion and charge storage

We report on a hybrid bioelectrochemical system that integrates an energy converting part, viz. a glucose/oxygen enzymatic fuel cell, with a charge-storing component, in which the redox features of the immobilized redox protein cytochrome c (cyt c) were utilized. Bilirubin oxidase and pyrroloquinoline quinone-dependent glucose dehydrogenase (PQQ-GDH) were employed as the biocatalysts for dioxygen

Dissolved organic carbon in tropical watersheds : Linking field observation and eco-hydrological modelling

Löst organiskt kol (DOC) är en allmän beteckning på organiskt material upplöst i vatten. DOC är en viktig källa för energi, kol och näring som överförs från markbundna till akvatiska ekosystem. Exporten av DOC till akvatiska ekosystem kan bidra till kolbalansen i markbundna ekosystem och till försämrad vattenkvalitet. Pågående klimat- och markförändringar kommer att påverka både genereringen och tDissolved organic carbon (DOC) is a general description of the organic material dissolved in water. DOC is an important source of energy, carbon, and nutrient transfers from terrestrial to aquatic ecosystems. The export of DOC into aquatic ecosystems may contribute to the carbon balance of terrestrial ecosystems and to water degradation. Ongoing climate and land cover changes will affect both DOC

Mixture effects in samples of multiple contaminants – An inter-laboratory study with manifold bioassays

Chemicals in the environment occur in mixtures rather than as individual entities. Environmental quality monitoring thus faces the challenge to comprehensively assess a multitude of contaminants and potential adverse effects. Effect-based methods have been suggested as complements to chemical analytical characterisation of complex pollution patterns. The regularly observed discrepancy between chem

Combined effects of environmental xeno-estrogens within multi-component mixtures : Comparison of in vitro human- and zebrafish-based estrogenicity bioassays

Some recent studies showed that in vitro bioassays based on fish or human estrogen receptor (ER) activation may have distinct responses to environmental samples, highlighting the need to better understand bioassay-specific ER response to environmental mixtures. For this purpose, we investigated a 12-compound mixture in two mixture ratios (M1 and M2) on zebrafish (zf) liver cells stably expressing

Development of a bioanalytical test battery for water quality monitoring : Fingerprinting identified micropollutants and their contribution to effects in surface water

Surface waters can contain a diverse range of organic pollutants, including pesticides, pharmaceuticals and industrial compounds. While bioassays have been used for water quality monitoring, there is limited knowledge regarding the effects of individual micropollutants and their relationship to the overall mixture effect in water samples. In this study, a battery of in vitro bioassays based on hum

Linking in Vitro Effects and Detected Organic Micropollutants in Surface Water Using Mixture-Toxicity Modeling

Surface water can contain countless organic micropollutants, and targeted chemical analysis alone may only detect a small fraction of the chemicals present. Consequently, bioanalytical tools can be applied complementary to chemical analysis to detect the effects of complex chemical mixtures. In this study, bioassays indicative of activation of the aryl hydrocarbon receptor (AhR), activation of the

An econometric analysis of the macroeconomic determinants of carbon dioxide emissions in Nigeria

This study examined an econometric analysis of the macroeconomic determinants of carbon dioxide (CO2) emission in Nigeria, covering the periods between 1981 and 2016, employing both linear and non-linear Autoregressive Distributed Lag (ARDL & NARDL) models. The time series data used were sourced from the database of the World Bank Development Indicators, 2016 and Central Bank of Nigeria Statis

ERP studies of visual and auditory processing of negated sentences

In two event-related potential studies, we investigated the processing of sentences with prefixal negation (unauthorized), sentential negation (not authorized) and no negation (authorized). We asked whether prefixal and sentential negation resulted in delayed processing. In Experiment 1, sentences such as “The White House announced that the new Obama biography was authorized/unauthorized/not autho

Heat transfer and flame stabilization of laminar premixed flames anchored to a heat-flux burner

Measurement of the burning velocity of unstretched laminar hydrogen/air premixed flames suffers from large uncertainties owing to the highly diffusive nature of hydrogen that can give rise to flame instability. This paper reports on a numerical study of the structures and stability of laminar premixed CH4/O2/CO2 flames and H2/O2/N2 flames anchored to a heat-flux burner using a high-order numerical

The Singular Event of Jesus' Death in Early Christianity

This article looks to the philosophy of Gilles Deleuze in order to theorize the crucifixion of Jesus as event in early Christian literature. A Deleuzian view on the event is primarily articulated with the distinction between a sequential and a serial understanding of happenings, where the latter forms the basis for singular events. It is argued that Jesus' death is best considered a singular event

En kopp kaffe och Marx, tack!

Bokcaféerna spelade en avgörande roll inom den västeuropeiska vänsterns tryck- och mediekultur under 1970-talet. Även i Sverige gjorde bokcaféerna omfattande avtryck inom kultur- och samhällslivet, till exempel genom att etablera den politiska pocketgenren. När fenomenet dog ut under nästa decennium försvann en betydande plattform för den radikala folkbildningen.

Är du rysk eller?

Recension av "Bruten vithet. Om den ryska femi­ninitetens sinnliga & temporala villkor", doktorsavhandling i genusvetenskap av Maria Lönn