1000 resultados para Folkhälsovetenskap, global hälsa, socialmedicin och epidemiologi


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Oikeustieteen päivät 20.-21.12.1996

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Festskrift till Per Lindholm

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Festskrift till Per Lindholm

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Festskrift till Per Lindholm

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Biofuels are considered as a promising substitute for fossil fuels when considering the possible reduction of greenhouse gases emissions. However limiting their impacts on potential benefits for reducing climate change is shortsighted. Global sustainability assessments are necessary to determine the sustainability of supply chains. We propose a new global criterion based framework enabling a comprehensive international comparison of bioethanol supply chains. The interest of this framework is that the selection of the sustainability indicators is qualified on three criterions: relevance, reliability and adaptability to the local context. Sustainability issues have been handled along environmental, social and economical issues. This new framework has been applied for a specific issue: from a Swiss perspective, is locally produced bioethanol in Switzerland more sustainable than imported from Brazil? Thanks to this framework integrating local context in its indicator definition, Brazilian production of bioethanol is shown as energy efficient and economically interesting for Brazil. From a strictly economic point of view, bioethanol production within Switzerland is not justified for Swiss consumption and questionable for the environmental issue. The social dimension is delicate to assess due to the lack of reliable data and is strongly linked to the agricultural policy in both countries. There is a need of establishing minimum sustainability criteria for imported bioethanol to avoid unwanted negative or leakage effects.

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The gacA gene of the biocontrol strain Pseudomonas fluorescens CHA0 codes for a response regulator which, together with the sensor kinase GacS (=LemA), is required for the production of exoenzymes and secondary metabolites involved in biocontrol, including hydrogen cyanide (HCN). A gacA multicopy suppressor was isolated from a cosmid library of strain CHA0 and identified as the infC-rpmI-rplT operon, which encodes the translation initiation factor IF3 and the ribosomal proteins L35 and L20. The efficiency of suppression was about 30%, as determined by the use of a GacA-controlled reporter construct, i.e. a translational hcnA'-'lacZ fusion. Overexpression of the rsmA gene (coding for a global translational repressor) reversed the suppressive effect of the amplified infC operon. This finding suggests that some product(s) of the infC operon can compete with RsmA at the level of translation in P. fluorescens CHA0 and that important biocontrol traits can be regulated at this level.

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Festskrift till Per Lindholm

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Le hemos dado el término genérico de "globalización" a la situación actual de los cambios económicos, sociales, políticos y culturales que han estado produciéndose en el mundo desde los años 1970, y muy especialmente desde 1989.Se trata de una expresión simple, que toma el adjetivo «global» para indicar los resultados de procesos que afectan a una totalidad, que se producen de forma planetaria, mundializada, pero también ¿no debemos olvidarlo¿ para señalar muy especialmente el imperativo estructural, sistémico de su despliegue. Unos resultados tan extendidos, totalizados y determinantes que la presunta coherencia de su aplicación parece modelar la superfície social del globo terráqueo desde la mirada atemporal de su lógica.