Sign in to download full-size image Figure 1. The global carbon cycle during the 1990s. The carbon stocks (shown in boxes) are in billions of tons of carbon (GtC); the carbon fluxes (arrows) are in GtC per annum. Note that both the terrestrial ecosystem and the ocean are net absorbers...
Carbon and Nitrogen Cycle. Turn page horizontally 66. Cycles of Nature. Water Cycle: Review: As we have already learned, water is constantly being cycled and recycled in an ecosystem. Lesson 5 The Flow of Matter through Ecosystems. Water, Carbon, Oxygen and Nitrogen Living things need wa...
Black carbon (BC) is produced by incomplete combustion of biomass by wildfires and burning of fossil fuels. BC is environmentally persistent over centuries to millennia, sequestering carbon in marine and terrestrial environments. However, its production,
The behaviour of carbon and nitrogen species in mantle fluids depends on oxygen fugacity (fO2). Estimates for continental lithospheric mantle (CLM) within the Kaapvaal20, Slave21and Siberian22,23cratons show thatfO2generally decreases depthward from +1 ΔlogfO2FMQ (Fayalite-Magnetite-Quartz oxygen...
Sign in to download full-size image Figure 13.18.Schematic of a low pressure carbonitriding cycle. 13.3.4.1Plasma-assisted LPC and LPCN Plasma-assisted low pressure carburizing, more commonly termed as plasma carburizing or ion carburizing, and plasma-assisted low pressurecarbonitridingare process va...
Image reproduced with permission of theMDPI(Materials2017,10(9), 1066) Notes 1. See also section below on graphane. 2. See also sections on solubilization of carbon allotropes in water and organic solvents. 3. See also a generalized book:Optical Properties of Graphene, Edited by R. Binder....
Carbonate precipitation is a major process in the global carbon cycle. It was recently proposed that authigenic carbonate (carbonate precipitated in situ at the sediment–water interface and/or within the sediment) played a major role in the carbon cycle throughout Earth’s history. The carbon iso...
Full size image Bacteroidetes up-regulated the response to oxidative stress (that is, response to hydrogen peroxide, reactive oxygen species and oxygen-containing compounds; Supplementary Data1) in the bathypelagic as compared with the epipelagic layer. Culture-based analyses revealed that resistance aga...
Sign in to download hi-res image Fig. 3.Relative microbial activity vs. relative water saturation (a) and water potential in log scale (b). In plot (a): Circles are obtained applying a mean proportional change at each soil interval with data and methods fromMoyano et al. (2012). Open...
elegans reveal that regulation of the folate cycle represents a shared causal mechanism of longevity and proteoprotection. Such interventions impact the methionine cycle, and reveal methionine restriction as an underlying mechanism. This comparative approach reveals key metabolic nodes to enhance healthy ...