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Biosensor-based Methods for Detection of Microcystins as Early Warning Systems

Popular Abstract in English Global invasion of our precious watercourses by cyanobacteria poses great threat to human- and animal health by deteriorating water systems. In fact, this problem is not likely to be solved in the near future as cyanobacteria are associated with pollution of waterways. Consequently, water sources are subject to contamination by natural toxins produced by abundant growthCyanobacteria blooms are a water menace since they produce potent toxins that have been implicated in poisonings and deaths of humans and animals after consumption or contact with cyanotoxin-contaminated water. Of particular concern are cyanotoxins called microcystins, which are hepatotoxic cyclic peptides known to promote development of liver tumors in humans and animals. The high toxicity and in

Altered consciousness is a many splendored thing

Abstract in UndeterminedContrary to the notion that altering our ordinary state of consciousness necessarily produces delusional beliefs and is generally deleterious, various findings in psychology and other disciplines suggest that 1) the ordinary state of consciousness does not provide an accurate mapping of reality and 2) alterations of consciousness can have various positive functions. Among t

Physical Modeling of MIMO Antennas and Channels by Means of the Spherical Vector Wave Expansion

In this paper we propose a new physically motivated model that allows to study the interaction between the antennas and the propagation channel for Multiple-Input Multiple-Output (MIMO) systems. The key tools employed in the model are the expansion coefficients of the electromagnetic field in spherical vector waves and the scattering matrix representation of the properties of the antenna. We deriv

Hacktivism – hackerkulturens svårgripbara organisationformer

Man kan kalla dem hackers, hacktivister eller nätaktivister. Själva ser de sig som tekniskt intresserade, en teknisk gemenskap. Deras långsiktigt politiska mål skiftar, de saknar gemensam ideologi och fasta strukturer. Det som delas är en innerlig fascination för tekniken bakom nätet – och kanske en minst lika innerlig aversion för destruktion av detta.