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PRA 2.6 Behandling av avløpsvann fra næringsmiddelindustri i kommunale renseanlegg. Fellingsforsøk i laboratorieflokkulator (Jar-test) - Del 2
(NIVA-rapport;0931, Research report, 1977)Det er utført fellingsforsøk med avløpsvann fra næringsmiddelindustri. Høyere doser av fellingskjemikalier enn det som er vanlig i kommunale anlegg ga god fosforfjerning (ca 95 %), mens reduksjonen av organisk stoff ikke ... -
PRA 24. Kjemisk felling av kommunalt avløpsvann. (Brukerrapport)
(NIVA-rapport;1178, Research report, 1979)Oversikt over de ulike typer kjemiske renseanlegg. Resultater fra kjemisk felling i forsøksanlegg såvel som erfaringer med ulike fellingsprosesser i inn- og utland er presentert. Valg av fellingsprosess og slambehandling ... -
PRA 2: Rensing av avløpsvann. Stabilisering og avvanning av slam. Forsøksanlegget Kjeller. Fremdriftsrapport nr.3
(NIVA-rapport;0486, Research report, 1973)SAMMENDRAG AV FORSKNINGSRESULTATER VEDR. SEKUNDÆRFELLING, BIODAMMER, KOMBINASJON MED KJEM.FELLING, AEROB SLAMSTABIL., STABILISERING AV SLAM MED KALK, FORTYNNING, AVVANNING AV SLAM VED SMÅ RENSEANLEGG SAMT BIOL. FORSØK FOR ... -
PRA 5. Utslipp av forurenset vann i resipient. Undersøkelse av eksistende dypvannsutslipp
(NIVA-rapport;0397, Research report, 1972) -
PRA 5.7 Mixing of a jet into a stratified environment
(NIVA-rapport;0580, Research report, 1973)Brukerbeskrivelse for et interaktivt edb-program til beregning av fortynningsforløp og innlagringsdyp for en turbulent stråle i sjiktet resipient. Engelsk tekst 74 0359. -
PRA 6.19. Biologisk rensing av fruktvann fra potetmelfabrikkene
(NIVA-rapport;0856, Research report, 1976)Fruktvann fra potetfremstilling er forsøkt renset i luftet lagune med etterfølgende kjemisk felling. Satsvis rensing. Dimensjoneringskriterier er gitt. -
PRA Forskningsprosjekt nr. 2.4 renseanlegg for fjerning av flytende og partikulære forurensninger, olje og fett ved midlertidig utslipp til sjøresipient. Litteraturstudium og vurdering av forskningsbehov
(NIVA-rapport;0523, Research report, 1973)Litteraturoversikt over metoder og kommersielt tilgjengelig utstyr for fjerning av flytende og partikkulært materiale fra avløpsvann. Økonomiske vurderinger 74 0241. -
Practicing Responsible Research and Innovation in a crowdsourcing project
(Peer reviewed; Journal article, 2019)The paper discusses the operationalization of responsible research and innovation (RRI), drawing on empirical materials from a research project that explored ICT-enabled tools and methods for crowdsourcing in urban ... -
Pre-project: Climate Change as an Opportunity towards Adaptive Sustainable Aquaculture (CADINAL)
(NIVA-rapport;6563, Research report, 2013)Cultured food fish currently accounts for nearly 50 % of the global consumption. India and Norway are the world’s second and seventh largest aquaculture producers respectively, thus aquaculture is considered to be a sector ... -
Predation mortality from ambush and cruising predators on newly-settled 0-group gadoids
(Peer reviewed; Journal article, 2020)We investigated predation from an ambush predator (shorthorn sculpin) and two cruising predators (Atlantic cod and saithe) on bottom-settled 0-group cod and saithe juveniles in a fjord in northern Norway. Stomach contents ... -
Predation of Atlantic salmon across ontogenetic stages and impacts on populations
(Peer reviewed; Journal article, 2023)Managers and stakeholders increasingly ask whether predation is a driving force behind the poor status of many species, and whether predator control is likely to be a successful management action to intervene. We review ... -
Predation risk alters life history strategies in an oceanic copepod
(Peer reviewed; Journal article, 2020)The ubiquitous oceanic copepod Calanus finmarchicus is the major link between primary producers and important fish stocks in the North Atlantic Ocean and adjacent seas. Despite over a century of research on growth and ... -
Predators of the destructive sea urchin grazer Strongylocentrotus droebachiensis on the Norwegian coast
(Journal article; Peer reviewed, 2014)In central Norway, populations of the green sea urchin Strongylocentrotus droe-bachiensis are collapsing, but the factors controlling its population density have not yet been elucidated. Through field sampling, we identified ... -
Predicting acidification of North American lakes
(NIVA-rapport;1477, Research report, 1983)An empirical model for lake acidification developed in Norway also satisfactorily accounts for observed water chemistry in oligotrophic clearwater, softwater lakes elsewhere in Europe and in North America. This model can ... -
Predicting Environmental Risks of Pharmaceuticals from Wholesale Data: An Example from Norway
(Peer reviewed; Journal article, 2023)Environmental risk assessment (ERA) of pharmaceuticals relies on available measured environmental concentrations, but often such data are sparse. Predicted environmental concentrations (PECs), calculated from sales weights, ... -
Predicting Lake Quality for the Next Generation: Impacts of Catchment Management and Climatic Factors in a Probabilistic Model Framework
(Journal article; Peer reviewed, 2019)Lake ecosystems across the world are under combined pressures of eutrophication and climate change, which increase the risk of harmful cyanobacteria blooms, reduced ecological status, and degraded ecosystem services. In ... -
Predicting the nationwide outmigration timing of Atlantic salmon (Salmo salar) smolts along 12 degrees of latitude in Norway
(Peer reviewed; Journal article, 2021)Aim Accurate predictions about transition timing of salmon smolts between freshwater and marine environments are key to effective management. We aimed to use available data on Atlantic salmon smolt migration to predict the ... -
Prediction of Extraordinarily High Floods Emerging From Heterogeneous Flow Generation Processes
(Peer reviewed; Journal article, 2023)River floods are generated by various processes that, if disregarded, may induce errors in flood hazard assessment. This is particularly relevant where events extraordinarily larger than the typical floods have been observed, ...