جستجوی مقالات مرتبط با کلیدواژه « Carbondioxide » در نشریات گروه « علوم پایه »

Methane or marsh gas is one of the simplest, most symmetrical, and stable organic molecules. Methane's half-life is very long and is one of the most abundant organic compounds in nature. In this article, an attempt has been made to hypothesize the chemical creation of matter in nature as: "The origin of the creation and emergence of organic matter in nature is methane, and organic matter in nature is also converted to methane by degradation and decomposition." In this hypothesis, it is believed that not only the endpoint and destruction of organic matter but also the originating and constitutive point of organic matter lead to methane, on the other hand, methane in the material world is the primary and final. It has been tried to present causes and evidence, such as the persistence and abundance of methane, the decomposition, and the conversion of organic matter to methane in nature, the Miller experiment on the synthesis of organic matter and amino acids from methane, the Big Bang scenarios of the emergence of other elements from the carbon element and the abundance of carbon after hydrogen, helium, and oxygen on a mass basis, methane hypothesis of primary carbon source of creation organic matter in nature to carbon dioxide, to support this hypothesis.

Although economic growth is one of the most important objectives of governments, higher economic growth is mainly associated with an increase in environmental pollution. The experience of developed countries and some developing countries shows that, with increasing economic growth, environmental pollution is first increased and, then, it is reduced due to the attention to the environment at the level of production per capita; this can be shown in the Kuznets environmental curve. The main objective of this study is to determine the level of per capita income which causes reduced emissions of pollution due to considering the environmental issues, as well as studying the impact of technology overflow index on the turning point of the curve. In this regard, using the models of the demand of capital-intermediate goods import, the technology overflow index was calculated and its effect on the Kuznets environmental curve theory during the period of 1966 to 2013 was reviewed. The results showed that the technology overflow variable not only had a positive and significant impact on carbon dioxide emissions, but it also made the Kuznets environmental curve's turning point possible at a higher per capita income.