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Can art change the world?Issues like climate change and unsustainable natural resource consumption are climbing ever higher on the international political agenda. Scientific reports, media coverage and information campaigns advise the public about these complex matters, including the environmental impact of human activity. It can however be difficult to engage people with facts and figures alone.T
We study the problem of tracking or disturbance rejection for signals beyond the Nyquist frequency in the sampled-data context. Given the well-established sampling theorem, one is inclined to infer that it is possible to track or reject only those signals below the Nyquist frequency. However, such a high-frequency signal may be detected as an aliased signal, and this opens a new possibility in tra
The loading of macroelements such as, dissolved organic carbon (DOC), totalnitrogen (N) and total phosphorus (P) from terrestrial soils to aquatic systems isincreasing in the northern hemisphere. This phenomenon has several ecologicaland biogeochemical consequences for inland and coastal water systems, which arelinked to bacterial cycling of DOC, N and P. During growth, bacteria assimilatemacroeleThe loading of terrestrially derived macroelements, such as dissolved organic carbon (DOC), total nitrogen (N), and total phosphorus (P), to inland and estuarine waters is increasing in the northern hemisphere. Thesemacroelements often limit heterotrophic bacterioplankton metabolism (production and respiration), which in turn influence food web structures, exchange of greenhouse gases between the
Background The HIV-1 epidemic in Ethiopia has been shown to be dominated by two phylogenetically distinct subtype C clades, the Ethiopian (C'-ET) and East African (C-EA) clades, however, little is known about the temporal dynamics of the HIV epidemic with respect to subtypes and distinct clades. Moreover, there is only limited information concerning transmission of HIV-1 drug resistance (TDR) in t
Polyphenols may play a chemopreventive role in colorectal cancer (CRC); however, epidemiological evidence supporting a role for intake of individual polyphenol classes, other than flavonoids is insufficient. We evaluated the association between dietary intakes of total and individual classes and subclasses of polyphenols and CRC risk and its main subsites, colon and rectum, within the European Pro
