Prediction of wastewater quality using amperometric bioelectronic tongues

Wastewater samples from a Swedish chemi-thermo-mechanical pulp (CTMP) mill collected at different purification stages in a wastewater treatment plant (WWTP) were analyzed with an amperometric enzyme-based biosensor array in a flow-injection system. In order to resolve the complex composition of the wastewater, the array consists of several sensing elements which yield a multidimensional response. We used principal component analysis (PCA) to decompose the array's responses, and found that wastewater with different degrees of pollution can be differentiated. With the help of partial least squares regression (PLS-R), we could link the sensor responses to the Microtox (R) toxicity parameter, as well as to global organic pollution parameters (COD, BOD, and TOC). From investigating the influences of individual sensors in the array, it was found that the best models were in most cases obtained when all sensors in the array were included in the PLS-R model. We find that fast simultaneous determination of several global environmental parameters characterizing wastewaters is possible with this kind of biosensor array, in particular because of the link between the sensor responses and the biological effect onto the ecosystem into which the wastewater would be released. In conjunction with multivariate data analysis tools, there is strong potential to reduce the total time until a result is yielded from days to a few minutes. (C) 2015 Elsevier B.V. All rights reserved

Abstraction in Samuel Beckett's drama for stage and screen 1962-1985

EThOS - Electronic Theses Online ServiceGBUnited Kingdo

Modernism, Nominalism, and the Hidden God in Samuel Beckett, Wallace Stevens, and David Jones

The idea that human language is an inherently inadequate instrument for grasping reality is widespread in modernist literature. While the ‘radical nominalism’ of this position has been recognised, this article argues that a genealogical understanding of its theological roots in medieval nominalism can highlight how modernist writers like Samuel Beckett and Wallace Stevens still wrestle with a voluntarist God of absolute and arbitrary power. By contrast, for a writer like David Jones, the historical choice of nominalism amounts to a theological mistake, and the modern artist needs to rediscover a God who consecrates and redeems the human capacity for sign-making.publishedVersio

Danning, informasjonsvurdering og argumentering i naturvitenskap (DIA)

Denne rapporten beskriver DIA-prosjektets intensjoner og teoretiske bakgrunn, implementering og resultater. Vi har lagt vekt på å tydeliggjøre de ulike undervisningsmodellene vi har utviklet, i tillegg til å beskrive teoretisk rammeverk, læringsmål og våre funn og erfaringer. Vi håper med dette at det skal være mulig for leseren å ta med seg idéer og deler av modeller, og omstøpe disse til bruk i egen undervisning. Rapporten er forsøkt skrevet slik at det skal være mulig å gå direkte til tema av interesse, og så lese videre ved å følge interne lenker. Denne målsetting gjør at vi har funnet det nødvendig å gjengi noe bakgrunnsinformasjon flere steder