24 research outputs found
Food and chemical substances relevant for monitoring. Report from the Scientific Steering Committee of the Norwegian Scientific Committee for Food and Environment.
publishedVersio
Food and chemical substances relevant for monitoring - Scientific Opinion of the Scientific Steering Committee of the Norwegian Scientific Committee for Food and Environment
Source at https://vkm.no/</a
Food and chemical substances relevant for monitoring. Report from the Scientific Steering Committee of the Norwegian Scientific Committee for Food and Environment.
Source at https://vkm.no/At request from the Norwegian Food Safety Authority (NFSA), VKM has identified food
groups and food items consumed by the Norwegian population that are relevant for
monitoring regarding content of one or more undesirable chemical substances (Figure 1).
Undesirable chemical substances were defined as chemical substances in food that may
constitute a potential health risk.
VKM has created a knowledge base (an Excel file) as a tool for planning and prioritising
monitoring of foods and undesirable chemical substances. The substance groups included in
the knowledge base are flavourings, food additives, metals and metalloids, natural toxins,
persistent organic pollutants, process-induced contaminants, substances in food contact
materials, substances in food supplements, and trace elements. More than 40 different
substances were included
Food and chemical substances relevant for monitoring - Scientific Opinion of the Scientific Steering Committee of the Norwegian Scientific Committee for Food and Environment
At request from the Norwegian Food Safety Authority (NFSA), VKM has identified food groups and food items consumed by the Norwegian population that are relevant for monitoring regarding content of one or more undesirable chemical substances (Figure 1). Undesirable chemical substances were defined as chemical substances in food that may constitute a potential health risk.publishedVersionPaid open acces
Measuring the Economic Value of Two Habitat Defragmentation Policy Scenarios for the Veluwe, The Netherlands
Deconvolution approach to the mapping of acoustic sources with matching pursuit and matrix factorization
We propose a novel procedure for solving the Deconvolution Approach to the Mapping of Acoustic Sources (DAMAS) inverse problem. The proposed procedure is a two-stage, hybrid greedy/non-greedy algorithm based on orthogonal matching pursuit (OMP, step 1) and non-negative matrix factorization (NMF, step 2). The purpose of the second step is to compensate for the suboptimal nature of matching pursuit. The method has been evaluated using Monte Carlo simulations and validated on experimental data. Both simulated and experimental results were compared to a few standard methods of deconvolution. These evaluations show that the proposed method has comparable, and in some cases, higher overall accuracy than the reference methods, particularly when the actual point spread function deviates from the modeled one. Simultaneously, the calculation time is low enough for near real-time use
Exploiting novel iSelect learning objects to foster inquiry and problem based learning in skills upgrading processes
Geochronology and chemostratigraphy of the 2.47–1.96 Ga rift-related volcano-sedimentary succession in the Karasjok Greenstone Belt, northern Norway, and its regional correlation within the Fennoscandian Shield
New geochronological data for the amphibolite-facies volcano-sedimentary Karasjok Greenstone Belt in northwestern Fennoscandia bracket its age between 2.47 and 1.96 Ga. The volcano-sedimentary units were deposited on the 3005 24 to 2776 69 Ma crystalline basement rocks of the Jergul Gneiss Complex. The lowermost Vuomegielas Formation contains rhyodacites dated at 2469 12 Ma that were deposited in an intracratonic rift setting related to the Matachewan mantle plume event. The overlying Skuvanvárri Formation, correlative with the early Jatulian (c. 2.2 Ga) units on the Fennoscandian Shield, consists of siliciclastic sedimentary rocks deposited in coastal deltaic and shallow-marine settings. The overlying mid-Jatulian Gollebáiki Formation contains 2151 5 Ma mafic intrusions and tholeiitic basalts related to a rifting event and breakup of the Superia supercraton that resulted in voluminous volcanic and shallow-marine deposits. The Ni-Cu-PGE-mineralized Porsvann intrusion, hosted by the Gollebáiki Formation, yielded an age of 2056 10 Ma, which corresponds with other Ni-Cu-PGE-bearing intrusions on the Fennoscandian Shield. The uppermost Báhkilvárre Formation consists of basalts, komatiites, and andesitic lavas. A synvolcanic gabbro within the komatiites in the lower part of the formation yielded an age of 1984 16 Ma. Andesites in the upper part of the same formation were dated at 1961 1 Ma. They represent the final Paleoproterozoic magmatic event that affected large areas of the Fennoscandian Shield prior to the Lapland-Kola and Svecofennian orogenies. Carbon isotope values for carbonates of the Skuvanvárri and Gollebáiki formations range up to highly positive (+12.4 ‰) values, corresponding to the c. 2.22–2.06 Ga Lomagundi carbon isotope excursion. In contrast, carbonates from the Báhkilvárre Formation do not yield elevated δ13C values, indicating that it was deposited in the aftermath of the Lomagundi carbon isotope excursion. New geochronologic and chemostratigraphic data for the Karasjok Greenstone Belt support correlation with the early Paleoproterozoic sedimentary successions deposited on the eastern margin of the Superior craton and position the northern-northwestern margin of the Karelia-Kola craton against the eastern margin of the Superior craton between c. 2.5 and 2.05 Ga
Viral and bacterial diseases of Atlantic cod Gadus morhua, their prophylaxis and treatment: a review
This review summarises the state of knowledge of both viral and bacterial diseases of
Atlantic cod Gadus morhua, and their diagnosis, prophylaxis and treatment. The most important
losses have been at the larval and juvenile stages, and vibriosis has long been the most important
bacterial disease in cod, with Listonella (Vibrio) anguillarum dominant among pathogenic isolates.
Vaccination of cod against pathogens such as L. anguillarum and Aeromonas salmonicida clearly
demonstrates that the cod immune system possesses an effective memory and appropriate mechanisms
sufficient for protection, at least against some diseases. Well-known viruses such as the
nodavirus that causes viral encephalopathy and retinopathy (VER), infectious pancreatic necrosis
virus (IPNV) and viral haemorrhagic septicaemia virus (VHSV) have been isolated from Atlantic cod
and can be a potential problem under intensive rearing conditions. No commercial vaccines against
nodavirus are currently available, whereas vaccines against IPNV infections based upon inactivated
virus as well as IPNV recombinant antigens are available. A number of investigations of the pharmacokinetic
properties of antibacterial agents in cod and their efficacy in treating bacterial infections
have been reviewed