540 research outputs found

    Impact of foods with health logo on ssaturated fat, sodium and sugar intake of young Dutch adults

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    Objective Health logos are introduced to distinguish foods with ‘healthier’ nutrient composition from regular foods. In the present study, we evaluated the effects of changed food compositions according to health logo criteria on the intake of saturated fat, sugar and sodium in a Dutch population of young adults. Design Foods in the Dutch food composition table were evaluated against nutrient criteria for logo eligibility. Three replacement scenarios were compared with the nutrient intake ‘as measured’ in the Dutch consumption survey. The foods not complying with health logo criteria were replaced either by ‘virtual’ foods exactly complying with the health logo criteria, with real 2007 market shares (scenario I) and 100 % market shares (scenario II), or by existing similar foods with a composition that already complied with the health logo criteria (scenario III). Results The percentage reduction in nutrient intake with the current 2007 market shares of ‘health logo foods’ was -2·5 % for SFA, 0 % for sodium and -1 % for sugar. With a 100 % market share these reductions would be -10 % for SFA, -4 % for sodium and -6 % for sugar. This may lead to a reduction of -40 % for SFA, -23 % for sodium and -36 % for sugar in the most optimal replacement scenario. Conclusions With ‘health logo foods’, available in 2007 and current consumption patterns, small reductions can be achieved for SFA and sugar. For additional reductions, lowering the fat/sodium content of meat (products) towards health logo criteria and drinks without sugar towards limits far below health logo criteria would be the most effective reformulation strategy

    A chlorine balance for the Netherlands (Part 2)

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    Wetensch. publicatieInstitute of Environmental Science

    A chlorine balance for the Netherlands (Part 1)

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    Wetensch. publicatieInstitute of Environmental Science

    "Never Regard Yourself As Already So Thoroughly Informed": The Withdrawal of its Invitation to Rodney Syme to Address its 2015 Congress by the Royal Australasian College of Physicians

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    In 1628, William Harvey presented his revolutionary theory of the circulation to ears at the Royal College of Physicians that had been deafened by the unquestionable authority of Galen’s teachings, from one and a half millennia in the past. Harvey’s theory was initially rejected, despite his faith in his colleagues being eager for truth and knowledge, and never regarding themselves as so well informed that they would not welcome “further information”. Recently Rodney Syme, the retired Melbourne urologist who for a long time has agitated for the legalisation of assisted dying, and also challenged the authorities to apply the current law in response to his admitted assistance to a number of individuals, was invited to address the 2015 Congress of the Royal Australasian College of Physicians. At the eleventh hour, the invitation to speak was withdrawn. In this column, we trace the course of events leading to this withdrawal of the invitation, and describe some of the correspondence to and from the College in response to the withdrawal. We draw parallels between the experiences of Harvey and Syme, and point to lessons to be learnt from the recent episode of apparent unwillingness, on the part of an institution that seeks to present itself as outward-looking, progressive and socially aware, to fulfil this promise in the increasingly important area of the end-of-life

    Assessing the future environmental impacts of copper production in China: implications of the energy transition

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    Copper demand in China is expected to grow considerably over the coming decades, driving energy use and environmental impacts related to copper production. To explore the environmental impacts of copper production in China, we used a variant of Life Cycle Sustainability Analysis that combined the Life Cycle Assessment methodology with the Chinese copper demand projections from 2010 to 2050. The results indicate that the environmental impacts of pyrometallurgical copper production are expected to increase more than twofold during this period and remain the largest contributor to the environmental footprint. Secondary copper production emits the least pollutions. Increasing the share of secondary copper production is the most environmental friendly option for copper production. To this end, China may focus on improving the classification of waste copper products and recycling infrastructure for end-of-life management. Hard coal use and production are crucial contributors to climate change in the context of copper production. Cleaning up copper production processes and improving energy efficiency would also help reduce environmental impacts. Energy transition can significantly reduce the environmental impacts of copper production, but it also can increase copper requirement.It does not visibly contribute to reduce human toxicity as well. (C) 2020 The Author(s). Published by Elsevier Ltd.Industrial Ecolog

    ‘Teamwerk in de wijk’. Overkoepelende rapportage 2021-2022

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    The politics and administration of institutional chang

    Material requirements for low-carbon energy technologies: a quantitative review

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    Deployment of clean energy technologies will require a considerable amount of materials. The surge in demand for metals related to emerging energy technologies may hinder the energy transition. In this study we provide a comprehensive overview and analysis of existing work in this field, a solid quantitative baseline for material requirements of different energy technologies and quantitative information that can be used to generate learning curves for the material requirements of different energy technologies. We conducted a quantitative review of the material requirements of low-carbon energy technologies in 132 scientific publications, and provided a comparative analysis of detailed data including material intensity and lifetime data. Besides providing a large amount of structured quantitative data, the results of our work indicate that: (1) research on the demand for low carbon technology related metals has received much attention since the 2010s; (2) around 80% of the publications focus on the global level while national level studies are underrepresented; (3) science-based future scenarios are the main means of estimating total future material requirements; (4) most studies foresee material constraints of large-scale implementation of low-carbon technologies and the secure and responsible supply of these materials is still the subject of discussion; (5) changes in metal intensity caused by technological development and material requirements for non-critical components are important though often overlooked.Industrial Ecolog
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