نتایج جستجو برای: sulfur dioxide
تعداد نتایج: 121919 فیلتر نتایج به سال:
Sulfur dioxide and nitrogen oxides are the primary causes of acid rain. In the United States, about two thirds of all sulfur dioxide and one-quarter of all nitrogen oxides come from electric power generation that relies on burning fossil fuels like coal. Acid rain occurs when these gases react in the atmosphere with water, oxygen, and other chemicals to form various acidic compounds. These acid...
A proton exchange membrane PEM electrolyzer has been investigated as a viable system for the electrolysis step in the thermochemical conversion of sulfur dioxide to sulfuric acid for the large-scale production of hydrogen. Unfortunately, during operation, sulfur dioxide can diffuse from the anode to the cathode. This has several negative effects, including reduction to sulfur that could potenti...
The Clean Development Mechanism (CDM) allows industrialized countries to comply with the Kyoto Protocol by using carbon offsets from developing countries. There are two puzzles within this carbon market: additionality (the proposed activity would not have occurred in its absence) and co-benefits (the project has other environmental benefits besides climate mitigation). This paper proposes an ec...
The question of how foreign direct investment (FDI) affects a host country's natural environment has generated much debate but little consensus. Building on an institution-based theory, this article examines how the institutional development of a host setting affects the degree of FDI-related environmental externalities in China (specifically, industrial sulfur dioxide emissions). With a panel ...
By means of Fabry-Pérot Fourier transform microwave spectroscopy, the rotational spectrum of protonated sulfur dioxide in two distinct isomeric forms, a cis- and a trans-geometry, is reported. The search for both isomers was based on theoretical structures obtained at the CCSD(T)/cc-pwCVQZ level of theory corrected for zero-point vibrational effects. At a similarly high level of theory, the cis...
Introduction. Epochs of widespread plains emplacement on Venus would have significantly perturbed atmospheric inventories of water and sulfur gases. These gases are potent infrared absorbers that act preferentially to block outgoing thermal radiation within carbon dioxide spectral windows. Small changes in their abundances can significantly alter the efficiency of the Venus atmospheric greenhou...
In today’s real life, from the perspective of the logistics quality of agricultural products, there are many problems are paid attention by social people, such as mushroom. Mushroom products in China’s exports have repeatedly been reported because of containing more sulfur dioxide in recent years. Also the dried mushroom exports were notified by nine times. Mushroom in the life is one of the pe...
Cysteine (Cys) synthase [O-acetyl-L-Ser(thiol)-lyase, EC 4.2.99.8; CSase] is responsible for the final step in biosynthesis of Cys. Transgenic tobacco (Nicotiana tabacum; F(1)) plants with enhanced CSase activities in the cytosol and in the chloroplasts were generated by cross-fertilization of two transformants expressing cytosolic CSase or chloroplastic CSase. The F(1) transgenic plants were h...
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