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Childhood obesity is in important respects a result of legal policies that influence both dietary intake and physical activity. The law must shift focus away from individual risk factors alone and seek instead to promote situational and environmental influences that create an atmosphere conducive to health. To attain this goal, advocates should embrace a population-wide model of public health, and policymakers must critically examine the fashionable rhetoric of consumer choice.  相似文献   
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The versatility of isotope ratio mass spectrometry is demonstrated by reference to diverse case studies. Variations in the natural isotopic composition of non-biological, organic materials are compared as a means by which samples may be associated or discriminated. These techniques may be used to augment or compliment conventional forensic methodologies. delta13C analysis was used to demonstrate that different masking tape had been recovered in two, apparently similar cases, involving the smuggling of money. Visually similar ecstasy tablets were compared by consideration of the delta13C and delta15N composition of MDMA extracted from the tablets. Although only a limited number of tablets were analysed, the isotopic similarity between two different seizures was sufficient to induce a guilty plea from a person suspected of possessing both. A combination of delta2H, delta13C, delta15N and delta18O together with GC-MS analyses were applied to small samples of seized heroin. Although GC-MS analysis indicated differences between the chemical composition of two of the heroin samples, isotopic analysis suggested similarities, which were confirmed by further delta2H, delta13C and delta18O isotopic analysis of the clingfilm in which the samples were wrapped.  相似文献   
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Social dialogue refers to discussions, consultations, negotiations and joint actions involving organisations representing the two sides of industry, namely employers and workers. The constitutional basis for social dialogue is located within Articles 153–155 of the Treaty on the Functioning of the European Union. In July 2008, a social dialogue committee in European professional football was established. This article assesses the significance of this move and argues that the committee has the long‐term potential to transform industrial relations in European football based on the conclusion of binding collective agreements. In the shorter term, the committee performs two functions: first, as a means of effecting a change in governance standards in European football and as a lobbying technique for the social partners in terms of their relationship with the EU; second, as a venue for a negotiated settlement between the rival interests operating within the EU's sports policy subsystem.  相似文献   
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