Results 191 to 200 of about 564,464 (248)
Advanced Science, EarlyView.A light‐activated catheter insert combines antimicrobial blue light with nitric oxide release to generate complementary oxidative and nitrosative stress, producing potent broad‐spectrum antimicrobial activity. The approach achieves greater than 4‐log reductions in bacterial and fungal viability and significantly reduces Staphylococcus aureus ...
Alexander Bruckmann +7 more
wiley +1 more source
Advanced Science, EarlyView.Selenium incorporation modulates the electronic structure of niobium diboride (Se‐NbB2) nanorods, enhancing the active site density and resulting in superior hydrogen evolution performance for sustainable energy applications. ABSTRACT The sluggish hydrogen evolution reaction (HER) kinetics of non‐noble‐metal catalysts remain a major challenge for ...
Shalmali R Burse +10 more
wiley +1 more source
Functional MXene Inks for Printed Electronics: Chemistry, Rheology, and Devices
Advanced Science, EarlyView.Functional MXene inks are emerging as building blocks for MXetronics, connecting MXene synthesis, surface functionalization, ink formulation, and advanced printing with device‐level applications. This review maps how composition, stability, rheology, and processability govern printed structures and enable high‐performance sensors, energy‐storage ...
Shahzaib Ali +6 more
wiley +1 more source
Deciphering Sulfur Cycling With Multiple Sulfur Isotopes
Nature Reviews Earth & Environment, 2022 International audienceLaetitia Guibourdenche explains the use of multiple sulfur isotopes in understanding past and present sulfur ...
Laetitia Guibourdenche
exaly +2 more sources
Geochemical Evidence for Cryptic Sulfur Cycling in Salt Marsh Sediments [PDF]
Earth and Planetary Science Letters, 2016 Cryptic sulfur cycling is an enigmatic process in which sulfate is reduced to some lower-valence state sulfur species and subsequently quantitatively reoxidized; the rate and microbial energetics of this process and how prevalent it may be in the ...
Gilad Antler +2 more
exaly +2 more sources
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1980
The geochemistry of sulfur is to a great extent affected by the biosphere. Living organisms transform sulfur from one oxidation state to another, thus changing the chemical properties of sulfur compounds and their distribution in the atmosphere, soils, waters and sediments.
Zehnder, A.J.B., Zinder, S.H.
openaire +2 more sources
The geochemistry of sulfur is to a great extent affected by the biosphere. Living organisms transform sulfur from one oxidation state to another, thus changing the chemical properties of sulfur compounds and their distribution in the atmosphere, soils, waters and sediments.
Zehnder, A.J.B., Zinder, S.H.
openaire +2 more sources
Science (New York, N.Y.), 1972
Even granting our uncertainties about parts of our model of the sulfur cycle, we can draw some conclusions from it: 1) Man is now contributing about one half as much as nature to the total atmospheric burden of sulfur compounds, but by A.D. 2000 he will be contributing about as much, and in the Northern Hemisphere alone he will be more than matching ...
W W, Kellogg +4 more
openaire +3 more sources
Even granting our uncertainties about parts of our model of the sulfur cycle, we can draw some conclusions from it: 1) Man is now contributing about one half as much as nature to the total atmospheric burden of sulfur compounds, but by A.D. 2000 he will be contributing about as much, and in the Northern Hemisphere alone he will be more than matching ...
W W, Kellogg +4 more
openaire +3 more sources
Sulfuric Acid on Europa and the Radiolytic Sulfur Cycle
Science, 1999A comparison of laboratory spectra with Galileo data indicates that hydrated sulfuric acid is present and is a major component of Europa's surface. In addition, this moon's visually dark surface material, which spatially correlates with the sulfuric acid concentration, is identified as radiolytically altered sulfur polymers.
R W, Carlson +2 more
openaire +2 more sources
2005
Publisher Summary The chapter discusses the biologically mediated sulfur metabolisms, which involve the reduction of sulfur compounds, the oxidative processes, and the disproportionation of sulfur compounds. Sulfur is an essential nutrient element and constitutes around 0.5 to 1.0% of the dry weight of prokaryotic organisms.
Donald E. Canfield +2 more
openaire +1 more source
Publisher Summary The chapter discusses the biologically mediated sulfur metabolisms, which involve the reduction of sulfur compounds, the oxidative processes, and the disproportionation of sulfur compounds. Sulfur is an essential nutrient element and constitutes around 0.5 to 1.0% of the dry weight of prokaryotic organisms.
Donald E. Canfield +2 more
openaire +1 more source