نتایج جستجو برای: clean and highly polluting
تعداد نتایج: 16861977 فیلتر نتایج به سال:
Much of the time, firms lobby against environmental protection, but there are major exceptions to this rule. DuPont, the leading ozone polluter in the 1980s, lobbied for a complete ban of its product. In 2015, in the run up to the Paris Agreement, Europe's six largest oil and gas companies lobbied for a global carbon price. This kind of political support is often pivotal for governments trying ...
The growth of economic activities may lead to increased emissions and detriment of the environment. Hence, pursuit of policies to moderate the environmental impact of economic activities has always been the main concern of policymakers and economic researchers. This study attempts to assess the policy that supports importing green products in order to reduce local pollution. In the model, a pol...
this study investigated the functions, types and frequencies of code switching in the teachers and students discourse in elt classrooms. to this end, the participants of this study including two groups of teachers and students were selected. the first group of participants were two efl teachers teaching general english courses (at two different levels of proficiency) in an institutional program...
This paper examines a twofold problem: ...rst, transboundary pollution calls for negotiations among neighboring countries. Second, each country consists of a clean and a polluting region, while bene...ts from abatement activities occur in either region. In turn, the tasks of an internal cost sharing and external negotiations have to be appointed to either the federal or the regional level. The ...
We present a basic exogenous growth model with two consumption goods that differ as regards their contributions to environmental pollution. Allowing for habit formation of the polluting good, we show under which conditions habit formation raises the consumption of the clean good relative to the dirty one in the competitive economy. Further, we demonstrate when habit formation generates a lower ...
This study analyzes the economic and environmental performance of OECD countries over 2000–2019. A by-production approach is applied efficiency score decomposed into its components. Unlike previous studies, we apply a refined model that allows for correct modeling technology. The can provide clear illustrations balancing growth protection. results indicate inefficiency higher than potential imp...
Mild and applicable synthesis of mono-, bis-, and spiro- perimidines is demonstrated in high yields via the condensation of 1,8-diaminonaphthalene and aldehydes or ketones in the presence of sulfamic acid as a green and highly efficient catalyst. This environmentally benign and clean synthetic pathway offers several advantages, such as high yields, short reaction times and easy work-up procedure.
In order to respond the increased demand for clean energy without harming atmosphere through polluting emissions, production from hydrogen combustion become largely used. This work presents a numerical study of injection conditions effect on structure H2-air diffusion flame. The aim is reproduce practical case non-polluting and resulting in very high temperatures. configuration composed two axi...
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