Results 21 to 30 of about 4,580 (237)

Structural features of mineral carriers of medicinal substances [PDF]

open access: yesBIO Web of Conferences, 2021
The aim of the work is to investigation of the structural features of mineral carriers of medicinal substances. Tasks: conduct electron microscopy and study the structural features of mineral sorbents; develop a classification of sorption interaction ...
Bondarev Alexander   +6 more
doaj   +1 more source

Diagenesis of the Sedimentary Fe–Ni Deposits of Euboea: Evidence Based on Phyllosilicate Mineralogy

open access: yesMaterials Proceedings, 2021
A set of samples with different textures from the sedimentary Fe–Ni deposits of Central Euboea, Greece, were studied with XRD and SEM-EDS to investigate the relationships between phyllosilicates present.
Spyros Cheliotis-Chatzidimitriou   +2 more
doaj   +1 more source

Investigation of Plug Rolling with Stub Mandrel Using the Finite Element Method [PDF]

open access: yesArchives of Metallurgy and Materials, 2018
The study proposed the model of “guide mark” defects formation on the internal surface of pipes, produced on PRM mills of PRP – 140. The research of pipe forming at plug rolling mill with stub mandrel has been carried out; regularities of the ...
D. Pavlov   +3 more
doaj   +1 more source

AN INVESTIGATION OF POLYCHROME RELIEFS FROM PTOLEMAIC RUINS IN UPPER EGYPT [PDF]

open access: yesEuropean Journal of Materials Science and Engineering, 2019
Multiple analytical techniques were applied to testing inorganic pigments and renders on the surviving ruins of the temple of Ptolemy XII (117‒51 BC) at Tell Atrib, Upper Egypt.
Amany BAKR   +2 more
doaj   +1 more source

Modification of Spent Bleaching Earth with WO3 and the Application for Photocatalytic Degradation of Waste Dyestuff under Solar Light

open access: yesJurnal Bahan Alam Terbarukan, 2019
Degradation of blue dye waste in Sarong Samarinda production using WO3-bleaching earth (BE) has been conducted. Structural and morphological characterization has conducted using X-ray diffraction (XRD), and Scanning electron microscopy-energy dispersive ...
Noor Hindryawati   +5 more
doaj   +1 more source

Organic Control of Dioctahedral and Trioctahedral Clay Formation in an Alkaline Soil System in the Pantanal Wetland of Nhecolândia, Brazil. [PDF]

open access: yesPLoS ONE, 2016
Recent studies have focused on the formation of authigenic clays in an alkaline soil system surrounding lakes of the Nhecolândia region, Pantanal wetland.
Laurent Barbiero   +5 more
doaj   +1 more source

Controlled Rate Thermal Analysis and Differential Scanning Calorimetry of Sepiolites and Palygorskites [PDF]

open access: yes, 2003
A series of sepiolites, palygorskites and "Rocky Mountain Leather" clay minerals have been analysed by controlled rate thermal analysis and differential scanning calorimetry.
Ding, Zhe, Frost, Raymond
core   +2 more sources

Experimental study of smectite interaction with metal iron at low temperature: 1. Smectite destabilization. [PDF]

open access: yes, 2005
Interaction between metal Fe and a variety of natural and synthetic smectite samples with contrasting crystal chemistry was studied by scanning electron microscopy and X-ray diffraction from experiments conducted at 80°C. These experiments demonstrate an
Bauer, Andreas   +5 more
core   +4 more sources

Modeling the dioctahedral smectites layer charge variation versus structural Iron reduction level [PDF]

open access: green, 2012
Iron is one of the most common redox species in soils and sedimentary rocks. Amongst iron-bearing phases, phyllosilicates might play key roles in various bio-geochemical processes involving redox reactions, where structural Fe (Festr) can act as a ...
Jebril Hadi   +4 more
openalex   +2 more sources

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