Climate and geology overwrite land use effects on soil organic nitrogen cycling on a continental scale [PDF]
Biogeosciences, 2022 Soil fertility and plant productivity are globally constrained by N availability. Proteins are the largest N reservoir in soils, and the cleavage of proteins into small peptides and amino acids has been shown to be the rate-limiting step in the ...
L. Noll +7 more
doaj +1 more source
Structural framework and timing of the Pahtohavare Cu ± Au deposits, Kiruna mining district, Sweden [PDF]
Solid Earth, 2023 As part of the larger mineral systems approach to Cu-bearing mineralization in northern Norrbotten, this study utilizes structural geology to set the classic Pahtohavare Cu ± Au deposits into an up-to-date tectonic framework.
L. Logan +4 more
doaj +1 more source
Mineral chemistry and geothermometry of chlorite in Dalayon Area (East of Dorud- Sanandaj-Sirjan Zone) [PDF]
پترولوژی, 2023 The main aim of this paper is to identify the formation environment and the physicochemical conditions of chlorite minerals in Dalayon area by their mineralogical and geochemical features (Ciesielczuk, 2002).
SeyedVahid Shahrokhi
doaj +1 more source
Crystal characteristics of fibrous calcite veins based on Electron Back Scattered Diffraction (EBSD)
Shiyou shiyan dizhi, 2022 Calcite veins are widely developed in organic-rich shale, and their petrological characteristics and genetic mechanism are the focus of research. The Electron Back Scatter Diffraction (EBSD) can characterize the micro-structure and orientation of mineral
Lanquan ZHAO +8 more
doaj +1 more source
Geophysical Monograph Series, Page 1-26., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst +8 more
wiley +3 more sources
Geoarchaeology, Volume 38, Issue 1, Page 35-56, January/February 2023., 2023 Abstract The effects of the Younger Dryas (YD) fluctuation on Late Pleistocene hunter‐gatherers' settlement and subsistence systems in the southern Alps are poorly known. This is primarily due to the scarcity of archaeological sites dating from the YD, in contrast with the extensive evidence available from the lateglacial interstadial and the early ...
Diego E. Angelucci +2 more
wiley +1 more source
Tectonics, Volume 41, Issue 12, December 2022., 2022 Abstract Orogenic wedges are common at convergent plate margins and deform internally to maintain a self‐similar geometry during growth. New structural mapping and thermochronometry data illustrate that the eastern Greater Caucasus mountain range of western Asia undergoes deformation via distinct mechanisms that correspond with contrasting lithologies ...
A. R. Tye +4 more
wiley +1 more source
Kinetic Insights into Bridge Cleavage Pathways in Periodic Mesoporous Organosilicas [PDF]
Small 2024, 2023 Bridging functionalities in periodic mesoporous organosilicas (PMOs) enable new functionalities for a wide range of applications. Bridge cleavage is frequently observed during anneals required to form porous structures, yet the mechanism of these bridge cleavages has not been completely resolved. Here, we reveal these chemical transformations and their
arxiv +1 more source
Archaeometry, Volume 65, Issue 1, Page 36-48, February 2023., 2023 Abstract Separating two or more aspects of an object via cutting was likely an important factor in the origin and evolution of flaked stone technology. In recent years experiments have demonstrated that several stone tool attributes can influence different kinds of cutting behaviour: slicing, cleaving, scraping, sawing, drilling, piercing and abrading.
Somaye Khaksar +3 more
wiley +1 more source
Coupling of actin hydrolysis and polymerization: Reduced description with two nucleotide states [PDF]
EPL 89, 38010 (2010), 2011 The polymerization of actin filaments is coupled to the hydrolysis of adenosine triphosphate (ATP), which involves both the cleavage of ATP and the release of inorganic phosphate. We describe hydrolysis by a reduced two-state model with a cooperative cleavage mechanism, where the cleavage rate depends on the state of the neighboring actin protomer in a
arxiv +1 more source