Results 31 to 40 of about 241,189 (213)

Influence of palaeoweathering on trace metal concentrations and environmental proxies in black shales [PDF]

open access: yes, 2017
The mineralogical and chemical compositions of Lower Carboniferous (Tournaisian) marine black shale from the Kowala quarry, the Holy Cross Mountains, Poland, were investigated.
Agnieszka Pisarzowska   +128 more
core   +1 more source

Integrated modeling of blue and green water evolution in a headwater region of Chaohu Lake: Impacts of climate and surface environmental factors

open access: yesEcological Indicators
Understanding the dynamic changes of blue water (BW, surface and groundwater) and green water (GW, soil-stored rainfall used by plants via evapotranspiration) is essential for assessing water resource sustainability.
Yang Cao   +6 more
doaj   +1 more source

Reservoir theory for studying the geochemical evolution of soils [PDF]

open access: yes, 2010
[1] Linking mineral weathering rates measured in the laboratory to those measured at the landscape scale is problematic. In laboratory studies, collections of minerals are exposed to the same weathering environment over a fixed amount of time. In natural
Almond   +58 more
core   +2 more sources

Indication of insensitivity of planetary weathering behavior and habitable zone to surface land fraction

open access: yes, 2012
It is likely that unambiguous habitable zone terrestrial planets of unknown water content will soon be discovered. Water content helps determine surface land fraction, which influences planetary weathering behavior. This is important because the silicate
Anglada-Escudé   +34 more
core   +1 more source

Terrestrial exposure of a fresh Martian meteorite causes rapid changes in hydrogen isotopes and water concentrations [PDF]

open access: yes, 2018
Determining the hydrogen isotopic compositions and H2O contents of meteorites and their components is important for addressing key cosmochemical questions about the abundance and source(s) of water in planetary bodies.
A Al-Kathiri   +30 more
core   +1 more source

Degradation Rate Location Dependency of Photovoltaic Systems

open access: yesEnergies, 2020
A main challenge towards ensuring improved lifetime performance and reduction of financial risks of photovoltaic (PV) technologies remains the accurate degradation quantification of field systems and the dependency of this performance loss rate to ...
Alexander Frick   +4 more
doaj   +1 more source

Lithium Isotopic Compositions of Mesozoic and Cenozoic Basalts From South-Eastern China: Implications for Extremely Low δ7Li of Continental-Type Eclogites

open access: yesFrontiers in Earth Science, 2022
Lithium isotope geochemical studies of oceanic-type eclogites benefited from previous investigation of altered oceanic crust; however, processes of lithium isotope exchange operating on altered protoliths of continental-type eclogites have remained ...
Cheng-Long Yu   +10 more
doaj   +1 more source

Weathering, Erosion, and Susceptibility to Weathering [PDF]

open access: yes, 2019
Soft grounds are often the result of weathering. Weathering is the chemical and physical change in time of ground under influence of atmosphere, hydrosphere, cryosphere, biosphere, and nuclear radiation (temperature, rain, circulating groundwater, vegetation, etc.). Erosion is the removal of material on or below the Earth surface due to flowing (ground-
openaire   +3 more sources

Reinforcing quantitative skills with applied research on tombstone-weathering rates. [PDF]

open access: yes, 2000
This Journal of Geoscience Education article describes a tombstone weathering exercise that reinforces quantitative skills with applied research. The article describes an exercise designed and carried out by students in a surficial processes course ...
Shelia Roberts
core   +1 more source

Comparison of the weathering behavior of a very high strength concrete with that of a standard concrete Comparação do comportamento climatizado de um concreto de alta resistência com o de um concreto padrão

open access: yesCerâmica, 2008
We studied the weathering process of a very high strength concrete (VHSC) and compared it with that of a usual concrete. VHSC has compressive strengths much above 100 MPa after seven days of curing.
A. Blandine, B. Essaïd, G. Bernard
doaj   +1 more source

Home - About - Disclaimer - Privacy