Results 51 to 60 of about 515,139 (357)
Hydration of silica and its role in the formation of quartz veins - Part 2
Substantia, 2019 The aqueous chemistry of silica and the formation of abundant polymeric silica species in natural sediment accumulations is set out in Part 1. Part 2 continues to describe the amorphous silica in sediments and presents more evidence for the formation of ...
John Elliston
doaj +1 more source
Journal of Economic Geology, 2021 Introduction Extensive Eocene–Oligocene magmatic rocks in the Lut–Sistan region, eastern Iran crop out as a huge magmatic province (Pang et al., 2013).
Fatemeh Yari +2 more
doaj +1 more source
How does the local wind field control the aerosol distribution in coastal Dronning Maud Land? [PDF]
, 2011 Atmospheric circulation patterns and chemical concentrations in firn cores are highly related to each other. Atmospheric winds transport aerosols like sea salt and mineral dust over the globe and redistribute them.
Bigler, M. +4 more
core
Advanced Engineering Materials, EarlyView.Mesoporous bioactive glass nanoparticles (MBGNs) are investigated for bone regeneration given their remarkable structural and functional properties. MBGNs are functionalized with Mn and Cu and incorporated with quercetin, a natural flavonoid exhibiting antioxidant, anti‐inflammatory, and antimicrobial properties.
Giovanni Lo Bello +5 more
wiley +1 more source
Rudarsko-geološko-naftni Zbornik, 2004 Mineral relationships and their chemistry were studied in some basic magmatic rocks of Banija ophiolite complex. On the basis of mineral and structural characteristics three kind of rocks are distinguished: metadiabase I (being characterized by secondary
Vesnica Garašić +2 more
doaj
Chemistry and Apparent Quality of Surface Water and Ground Water Associated with Coal Basins [PDF]
, 1985 Personnel of the Arkansas Mining and Mineral Resources Research Institute conducted preliminary investigations on the chemistry and quality of surface and ground water associated with 12 coal-bearing sub-basins in the Arkansas Valley coal field. The coal
Oakley, A. J. +3 more
core +2 more sources
Advanced Engineering Materials, EarlyView.Bimetallic (NiFe) and trimetallic (NiFeCr) nanoalloys (NAs) are synthesized using corresponding oxide mixtures using microwave hydrogen plasma within a few milliseconds. The process simultaneously 1) reduces metal oxides to metals; 2) downsizes the particles from micrometers to nanometers; and 3) blends the metals to form NAs.
Sachin Kumar +5 more
wiley +1 more source
Mineral chemistry and termometry of the high-Mg ultramafic lava flows (Komatiite), NE Iran: evidence of plume-arc interaction in the Upper Paleozoic Mashhad-Fariman subduction zone [PDF]
پترولوژی, 2019 In the northeast of Iran, there are some outcrops of high-Mg ultramafic volcanic rocks. These rocks have been interpreted as an ideal ophiolite sequence related to the closure of Paleo-Tethys. According to detailed field observations, the komatiitic lava
Mohsen Mobasheri +3 more
doaj +1 more source
Extractability of slurry and fertilizer phopshorus in soil after repeated freezing [PDF]
, 2005 The potential effects of freezing on phosphorus (P) chemistry in Finnish soils are not well known. We studied the effects of multiple freeze-thaw cycles on soil P chemistry in a laboratory incubation experiment with one organic and one mineral surface ...
Peltovuori, Tommi, Soinne, Helena
core
Thermally induced behavior of the K-exchanged erionite. A further step in understanding the structural modifications of the erionite group upon heating [PDF]
, 2018 Fibrous erionite is a naturally occurring zeolite considered to be highly carcinogenic upon inhalation, even more than crocidolite. Since no iron is typically present in erionite, its toxicity has been attributed to ion-exchanged Fe participating in ...
Ballirano P. +5 more
core +1 more source