نتایج جستجو برای: supply of food
تعداد نتایج: 21206718 فیلتر نتایج به سال:
Nutrition security describes the adequacy of the food supply to meet not only energy but also macronutrient and micronutrient requirements for the population. The aim of this study was to develop a method to assess trends in national nutrition security and the contribution of imports to nutrition security, using the UK as a case study. Food supply data from FAO food balance sheets and national ...
Food fortification generally refers to the addition of micronutrients and other favourably bio-active food components to food-stuffs where there are recognised deficiencies in the target population. Each forticant has had or could have regulatory implications. It is understandable, although arguable, in the face of a limited food supply skewed, for the majority, in the direction of starchy stap...
امنیت انرژی به معنی عرضه مداوم و پایدار همراه با قیمت های معقول در حامل های انرژی، که تهدیدات امنیتی، سیاسی، اقتصادی، محیط زیستی و روانی را کاهش دهد. امروزه نفت و گاز تنها، کالای تجاری نیست بلکه بعنوان ابزار سیاسی مورد استفاده قرار می گیرد.اختلاف میان روسیه و اکراین بر سر انرژی در ژانویه 2006، تهدیدی برای امنیت انرژی اروپا ایجاد کرد. در این تحقیق ما تلاش کردیم که نقش انرژی آسیای میانه و قفقاز ر...
Understanding which species are most vulnerable to human impacts is a prerequisite for designing effective conservation strategies. Surveys of terrestrial species have suggested that large-bodied species and top predators are the most at risk, and it is commonly assumed that such patterns also apply in the ocean. However, there has been no global test of this hypothesis in the sea. We analyzed ...
Reproductive rates and survival of young in animal populations figure centrally in generating management and conservation strategies. Model systems suggest that food supply can drive these often highly variable properties, yet for many wild species, quantifying such effects and assessing their implications have been challenging. We used spatially explicit time series of a well-studied marine re...
This paper seeks to design food supply chain structures that can provide food security for every person in the world while supporting long-term environmental sustainability. In particular, we provide alternatives to the current food supply chain structure and analyze their potential for providing food security, in terms of productive capacity and long-term environmental sustainability. Given th...
Cattle evolved as plain-grazing herbivores gathering together into herds to aid in the defense against predators. In non-domesticated species, matriarchal social groups of mothers and offspring exist separately from groups of male animals in various stages of maturity. The size of the group varies depending on the availability of basic resources such as food supply and access to mates for repro...
Please cite this article in press as: Dabben Engineering (2013), http://dx.doi.org/10.1
The optimal amount of reserves that a small bird should carry depends upon a number of factors, including the availability of food and environmental predation risk levels. Theory predicts that, if predation risk increases, then a bird should maintain a lower level of reserves. Previous experiments have given mixed results: some have shown reduced reserves and some, increased reserves. However, ...
Food defense is an emerging area of study of how to prevent intentional contamination of the food supply with chemicals or pathogens by someone with criminal intent. The topic of food defense in retail foodservices, particularly schools, has received limited investigation. This study will assess the risk perception of intentional food tampering of a national sample of school nutrition program d...
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