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Utilization of terrestrially derived dissolved organic nitrogen by aquatic bacteria

I investigated the bacterial utilization of terrestrially derived dissolved organic nitrogen (DON) in aquatic ecosystems, and assessed the potential role of river-born DON in marine eutrophication. To determine the bioavailability of DON, I developed a bioassay employing N-limited bacterial regrowth cultures, which were calibrated with additions of inorganic nitrogen. I found that between 2 and 72

Servitut

Servitut innebär normalt att en fastighet får nyttja en annan fastighet för ett visst bestämt ändamål. I Sverige finns det ca 600 000 registrerade officialservitut i fastighetsregistret. De allra flesta bildade vid lantmäteriförrättningar. Samtidigt finns det ca 650 000 inskrivna avtalsservitut i fastighetsregistret. Som jämförelse finns det ca 3,2 miljoner fastigheter, ca 60 000 ledningsrätter oc

A field study in dairy farms: thermal condition of feet

The study aimed to find out the problems connected with feet during work in cold loose housing barns in wintertime. 13 dairy farms and 20 workers were studied. Skin temperatures and subjective responses were collected, and at the end of a work period the subjects filled in a questionnaire about the workday. The foot skin temperatures were measured on dorsal foot and second toe. Most of the workers

Afrika - en kontinents ekonomiska och sociala historia

Få kontinenters historia är så präglad av myter och fördomar som Afrikas och ännu idag är det vanligt att beskriva dess historia som statisk och afrikanska samhällen som primitiva. 'Afrika - en kontinents ekonomiska och sociala historia' visar istället en dynamisk och variationsrik kontinent. Boken handlar om den ekonomiska och sociala utvecklingen i Afrika söder om Sahara i ett långsiktigt perspe

Hydrophobic interactions of serpins

The proteins of the serpin family are primarily but not exclusively proteinase inhibitors, which share a common, similar structure. It is known that this structure undergoes major conformational changes upon cleavage in the serpin reactive site loop, and that these changes include rearrangements within the hydrophobic core of the molecule. AAT and the free C-terminal peptide dissociated from cleav