Results 41 to 50 of about 41,651 (167)

Characterization of potassium solubilizing bacteria isolated from corn rhizoplane

open access: yesAgronomía Colombiana, 2021
Potassium is one of the most important elements in plant growth and development. Most of the potassium reserves on Earth are in insoluble mineral form, which represents a limitation for the absorption of this nutrient by plants.
Reneé Pérez-Pérez   +5 more
doaj   +1 more source

Potassium recovery from Brazilian glauconitic siltstone by hydrothermal treatments

open access: yesREM: International Engineering Journal, 2020
Silicate rock Verdete, collected in the central region of Minas Gerais state (Brazil) and composed mostly of micas (glauconite and muscovite) and tectosilicates (K-feldspar and quartz), was hydrothermally treated with several reactants in order to ...
Frederico Amorim Safatle   +2 more
doaj   +1 more source

Particle size and kind of mica in synthesis of nontoxic bronze and gold pearlescent pigments based on nanoencapsulated hematite [PDF]

open access: yesJournal of Ultrafine Grained and Nanostructured Materials, 2015
Nano-encapsulated iron oxide in Zirconium oxide-coated mica pigments are thermally stable,innocuous to human health, non-combustible, and they do not conduct electricity.
Maryam Hosseini-Zori
doaj   +1 more source

The Rwenzori Mountains, a Paleoproterzoic crustal shear belt crossing the Albertine rift system [PDF]

open access: yes, 2015
This contribution discusses the development of the Paleoproterozoic Buganda-Toro belt in the Rwenzori mountains and its influence on the western part of the East African Rift System in Uganda.
Aanyu, K.   +6 more
core   +1 more source

Utilization of flotation in copper extraction from polymetallic ore [PDF]

open access: yes, 2020
The aim of this study was to examineflotation of utility metals from poor polymetallic ores and verify the potential for profitable yields in connection withpotentially economic deposits of non-ferrous metals.The paper describes results in ...
Janáková, Iva   +2 more
core   +1 more source

The effects of some flame retardant chemicals used in surface coating on the burning properties of MDF (Medium density fiberboard)

open access: yesTurkish Journal of Forestry, 2017
In this study, the surfaces of MDF were coated with a mixture of calcite, fire retardant (FR) and glue. Then the properties of MDF boards combustion resistance were investigated.
Ferhat Özdemir, Arif Ayaz
doaj   +1 more source

Effect of Strain on Properties of Metal Doped VO2 Based Thermal Sensors on Muscovite Substrate

open access: yesEngineering Proceedings, 2022
In this work, VO2 based thermal sensing thin film synthesized on flexible muscovite substrates by direct oxidation of deposited vanadium metal, were investigated for the impact of doping and strain on their electrical properties.
Samee Azad   +3 more
doaj   +1 more source

Albuquerque at Malacca, 1511; Yermak in Siberia, 1582. The amphibious charge to global empires

open access: yesNuova Antologia Militare, 2022
The transformation of warfare in the Early Modern period, embodied in the concept of the military revolution, not only changed the face of combat and societies of belligerent nations, but the global military balance as well.
Vladimir Shirogorov
doaj   +1 more source

Pressure, temperature and time constraints on tectonic models for southwestern Sweden [PDF]

open access: yes, 2010
In this work, a number of key localities have been investigated in detail in order to provide precise constraints on models for the tectonic evolution of southern Sweden.
Austin Hegardt, Eric
core   +1 more source

Production and characterization of feldspathic-muscovite glass composite for dental prosthesis [PDF]

open access: yesBrazilian Oral Research
The principal objective of this studywas to produce and characterize a machinable glass ceramic containing muscovite-mica as the main crystalline phase to be used as a dental restorative material.
Fernanda Paes de Figueiredo Costa PIETOSO   +3 more
doaj   +1 more source

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