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Ferrocement or ferro-cement [1] is a system of construction using reinforced mortar [2] or plaster (lime or cement, sand, and water) applied over an "armature" of metal mesh, woven, expanded metal, or metal-fibers, and closely spaced thin steel rods such as rebar. The metal commonly used is iron or some type of steel, and the mesh is made with ...
Highest combustion rates of iron occurs in East Asia, which contributes to 20-100% of ocean depositions around the globe. [29] Humans have altered the cycle for Nitrogen from fossil fuel combustion and large-scale agriculture. [36] Due to increased Iron and Nitrogen raises marine nitrogen fixation in the subtropical North and South Pacific Ocean.
A biogeochemical cycle, or more generally a cycle of matter, [1] is the movement and transformation of chemical elements and compounds between living organisms, the atmosphere, and the Earth's crust. Major biogeochemical cycles include the carbon cycle , the nitrogen cycle and the water cycle .
Molybdenum (Mo) is the most abundant transition element in solution in the sea (mostly as dianionic molybdate ion) and in living organisms, its abundance in the Earth's crust is quite low. Therefore, the use of Mo by living organisms seems surprising at first glance. Archaea, bacteria, fungi, plants, and animals, including humans, require ...
Thus, these organisms have developed means to absorb iron as complexes, sometimes taking up ferrous iron before oxidising it back to ferric iron. [10] In particular, bacteria have evolved very high-affinity sequestering agents called siderophores. [154] [155] [156] After uptake in human cells, iron storage is precisely regulated.
Organic geochemistry, the study of the role of processes and compounds that are derived from living or once-living organisms. [13] Photogeochemistry is the study of light-induced chemical reactions that occur or may occur among natural components of the Earth's surface. [14]
Human composting is emerging as an end-of-life alternative that is friendlier to the climate and the Earth — it is far less carbon-intensive than cremation and doesn’t use chemicals involved ...
Anthropic rock is rock that is made, modified and moved by humans.Concrete is the most widely known example of this. [1] The new category has been proposed to recognise that human-made rocks are likely to last for long periods of Earth's future geological time, and will be important in humanity's long-term future.