29 research outputs found
Risk assessment of grilled and barbecued food
When grilling, more harmful substances can be formed than when frying in a pan. For most people, there is a low risk associated with eating grilled food. Grilling food at a high temperature and/or on a campfire, often, and eating a lot of it may damage one's health. Distance to the heat source, how early food is placed onto the grill, and the type of fuel used can affect the formation of harmful substances. It is known that heat treatment such as grilling and frying can give rise to unwanted toxic compounds in the food, so-called process-induced contaminants. Grilling is a common way of preparing food in Norway, and the grilling season has become longer. The food selection has become ever wider and sales of different types of grills are increasing. Many factors may thus have changed since VKM's previous assessment of health risks from the consumption of grilled food, which was published in 2007. To be able to give current and relevant advice to consumers and others who sell or offer grilled food, the Norwegian Food Safety Authority has asked VKM for updated knowledge about the formation of process-induced contaminants in different food products by different grilling methods, and an assessment of what risk this may pose. Main findings: Harmful substances can be formed at high cooking temperatures. When grilling, the temperature is higher and less controllable than when frying in a pan. There is good evidence that two groups of genotoxic and carcinogenic substances, heterocyclic amines (HAA) and polycyclic aromatic hydrocarbons (PAH), are formed in higher concentrations in grilled food than in fried food. VKM has assessed PAH, for which there are good studies of occurrence in barbecued food. PAHs are formed when fat burns after dripping from the food onto the heat source. PAHs can also be released from coal, briquettes and wood. The smoke with PAH settles on the food. The occurrence of PAH in grilled food varies greatly and depends on how the food is grilled. The concentration of PAH is highest in very well-done meat with a high fat content, such as pork ribs and hamburgers. The highest concentration of PAH was found in sausage grilled on a campfire. This is caused by unburnt fat or soot/smoke from the fire that stick to the sausage. By avoiding fat dripping directly onto the heat source, preventing smoke from coming into contact with the food, and not overcooking the food, the amount of PAH in grilled food can be reduced. When using charcoal, the PAH emission is higher immediately after lighting, and the amount of PAH in the food can be reduced by waiting sufficiently long before start grilling. It is not the number of times you grill that is a critical factor, but how. A "worst-case" scenario shows that the annual consumption of more than 15-25 meals that have been grilled in a way that produces a high PAH incidence may provide too low margin of exposure* for the risk to be low. If, on the other hand, you prefer lean barbecue food that is not overcooked, then you can eat it more than 100 times a year according to our calculations and still have a high enough margin of exposure. * Margin of exposure is the ratio between the lowest dose (reference point) that causes increased cancer in experimental animals and the calculated intake. Exposure margin below 10,000 is considered a public health concern. Norsk: Ved grilling kan det dannes flere helseskadelige stoffer enn ved steking i panne. For de fleste er det lav risiko knyttet til ĂĄ spise grillmat.Risk assessment of grilled and barbecued foodpublishedVersionacceptedVersionacceptedVersio
Benefit and risk assessment of fish in the Norwegian diet - Scientific Opinion of the Steering Committee of the Norwegian Scientific Committee for Food and Environment
Source at https://vkm.no/.In 2006, VKM published “A comprehensive assessment of fish and other seafood in the
Norwegian diet”. The assessment supported the recommendation from Norwegian Health
authorities to eat more fish both for dinner and on sandwiches. In an update of the
assessment in 2014 VKM concluded that “the benefits from fish consumption clearly
outweigh the negligible risk presented by current levels of contaminants and other
undesirable substances in fish”. Because of new knowledge available, the Norwegian Food
Safety Authority requested a new benefit and risk assessment of fish in the Norwegian diet
in 2019. In the assignment, they asked VKM to answer the following questions:
Which health consequences will it have for the Norwegian population if they:
Continue with the same fish consumption levels as of today
Increase the consumption of fish to match the recommendations given by the
Norwegian Directorate of Health
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Effects of monitoring costs on real options analysis
This paper is the first to analyze importance of monitoring costs in real options analysis. Monitoring costs, in this context, are tied to the process of making key investment or management decisions. Monitoring costs differ from previously considered types of frictions, as they make it optimal to spread decisions (and not only actions) in time. In the first part of the paper, we present a qualitative introduction of monitoring costs in real options analysis and their effects on the optimal decisions during the life of the real option. In the second part, we implement numeric valuation of a real option in the presence of two types of frictions, monitoring costs and option maintenance costs. We illustrate our results using a number of three-dimensional surface plots. We analyze effects of the two frictions on the option value and the optimal decision timing and supplement our results by analyzing sensitivities to all major parameters of the model. The surface plots serve two purposes. First, they allow to quantify importance of the considered frictions. Second, they could be consulted as qualitative indicators in analyzing projects with similar characteristic
DROL - SPECIFICATION FOR COMPUTATIONAL GEOMETRY PROBLEMS
The specification language for the computational geometry has been developed. The new noughts algorithm for the rectangular trimming problem (RTP) has been implemented firstly. The classification of the algorithms solcing RTP has been performed. The program solving RTP and having the record time characteristic has been created. The theoretical result are used in the special course "Computational geometry"Available from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio
Linguistic disciplines as a factor of the general cultural competence formation of the future specialists
The article deals with the problem of the general cultural competence formation in the process of learning English by students in the framework of the introduction of new educational standards in higher education. The author examines the process of the general cultural competence formation that focuses a future specialist's attention on universal values in the modern society, allows one to understand a situation and to solve problems in various fields of activity, to develop personally and professionally. Particular attention is paid to the general cultural competence formation based on the cycle of linguistic disciplines which is an essential component in the training competitive specialists who are able to adapt easily to smart and digital technologies and innovations. The technological approach promoting general cultural competences formation based on the cycle of linguistic disciplines is given