5 resultados para Union Pacific Railroad Company.

em BORIS: Bern Open Repository and Information System - Berna - Suiça


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The introduction of the so-called “duty free quota free” treatment (DFQF) for all products from least developed countries (LDCs), in particular by the European Communities (EC) and by Switzerland, raised expectations of increased agricultural exports for these 49 countries. Despite the high tariff differential LDCs now enjoy over their competitors, especially for agricultural products and particularly in Switzerland, the results until 2007 are dismal: with the exception of sugar exports to the EC, LDCs have not been able to substantially increase their agricultural exports to Europe. This study analyses the result-ing tariff situation and the remaining non-tariff barriers. In many instances it is not cus-toms duties but the sanitary and phytosanitary barriers which turn out to be the single most important hurdle preventing trade. For instance, almost no LDC-based company can supply animal-based products. Similarly, certain private standards set by proces-sors and retailers prevent imports, particularly from LDCs, far more effectively than tar-iffs. Several gateways into this “European cordon sanitaire” are proposed. Only if offered in the context of a package of various carefully coordinated measures, DFQF could yet have a real impact on trade from LDCs. As it stands, this treatment constitutes only a nice-to-have but still largely ineffective instrument of trade development.

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Major volcanic eruptions generate widespread ocean cooling, which reduces upper ocean stratification. This effect has the potential to increase nutrient delivery into the euphotic zone and boost biological productivity. Using externally forced last millennium simulations of three climate/Earth System models (Model for Interdisciplinary Research On Climate (MIROC), Community Earth System Model (CESM), and LOch-Vecode-Ecbilt-CLio-agIsm Model (LOVECLIM)), we test the hypothesis that large volcanic eruptions intensify nutrient-driven export production. It is found that strong volcanic radiative forcing enhances the likelihood of eastern Pacific El Niño-like warming in CESM and LOVECLIM. This leads to an initial reduction of nutrients and export production in the eastern equatorial Pacific. However, this initial response reverses after about 3 years in association with La Niña cooling. The resulting delayed enhancement of biological production resembles the multiyear response in MIROC. The model simulations show that volcanic impacts on tropical Pacific dynamics and biogeochemistry persist for several years, thus providing a new source for potential multiyear ecosystem predictability.