Results 201 to 210 of about 94,948 (251)
Some of the next articles are maybe not open access.
2014
This chapter addresses both geochemical and biogenic sulfur cycling, including their tight interconnections. It presents the cycling of sulfur between the atmosphere and the marine hydrosphere. The cycling involves redox processes and both biogenic and abiotic methylation and demethylation of sulfur.
openaire +1 more source
This chapter addresses both geochemical and biogenic sulfur cycling, including their tight interconnections. It presents the cycling of sulfur between the atmosphere and the marine hydrosphere. The cycling involves redox processes and both biogenic and abiotic methylation and demethylation of sulfur.
openaire +1 more source
2008
Microbes, especially bacteria, play an important role in oxidative and reductive cycle of sulfur. The oxidative part of the cycle is mediated by photosynthetic bacteria in the presence of light energy and chemosynthetic forms in the absence of light energy.
openaire +1 more source
Microbes, especially bacteria, play an important role in oxidative and reductive cycle of sulfur. The oxidative part of the cycle is mediated by photosynthetic bacteria in the presence of light energy and chemosynthetic forms in the absence of light energy.
openaire +1 more source
Biogeochemistry, 1984
Sulfur is essential for the production of certain amino acids in plants. As amino acid sulfur is the major form of sulfur in trees, there is a strong relationship between organic S and organic N in tree tissue. Sulfur deficiencies occur in parts of southeastern Australia and northwestern North America, remote from pollutant inputs.
openaire +1 more source
Sulfur is essential for the production of certain amino acids in plants. As amino acid sulfur is the major form of sulfur in trees, there is a strong relationship between organic S and organic N in tree tissue. Sulfur deficiencies occur in parts of southeastern Australia and northwestern North America, remote from pollutant inputs.
openaire +1 more source
1992
Publisher Summary Sulfur, the 14th most abundant element in the Earth's crust, plays a variety of important roles in the chemical functioning of the Earth. In its reduced oxidation state, sulfur is a key nutrient to life providing—for example, structural integrity to protein-containing tissues.
R.J. Charlson +2 more
openaire +1 more source
Publisher Summary Sulfur, the 14th most abundant element in the Earth's crust, plays a variety of important roles in the chemical functioning of the Earth. In its reduced oxidation state, sulfur is a key nutrient to life providing—for example, structural integrity to protein-containing tissues.
R.J. Charlson +2 more
openaire +1 more source
BIOGEOCHEMICAL CYCLES | Sulfur Cycle
2003This article is reproduced from the previous edition, volume 1, pp 213–220, © 2003, Elsevier Ltd.
openaire +1 more source
1973
The chemistry of gaseous sulfur compounds in the atmosphere at concentrations less than 0.1 ppm depends upon nonuniform distributions of sources and sinks as well as the variable physical properties of the atmosphere itself. Because of natural variations in sunlight intensity, temperature, humidity, surface chemical characteristics, and atmospheric ...
openaire +1 more source
The chemistry of gaseous sulfur compounds in the atmosphere at concentrations less than 0.1 ppm depends upon nonuniform distributions of sources and sinks as well as the variable physical properties of the atmosphere itself. Because of natural variations in sunlight intensity, temperature, humidity, surface chemical characteristics, and atmospheric ...
openaire +1 more source
Microorganisms and the Sulfur Cycle
1984Abstract The biogeochemical sulfur cycle consists of an assimilatory and a dissimilatory side. On the assimilatory side inorganic sulfur in reduced or oxidized form is taken up into microbes, plants and animals (via plants) and transformed there into amino acids, proteins, and coenzymes that function there until they are excreted or the organisms die
openaire +1 more source