Results 11 to 20 of about 32,961 (360)

Toward A New Generation of Organic Manures: Enriched-Compressed Organic Manure As A Substitution of Ordinary Compost in Organic Farming Systems [PDF]

open access: yesJournal of Soil Sciences and Agricultural Engineering, 2016
There is an urgent need to maximize crop productivity of organic farming systems. For this purpose, a field experiment was carried out to evaluate the efficacy of modern enriched organic manures as compared with absolute organic manure and organic-based ...
Kh. El-Sayed, A. Mosa, A. El-Ghamry
doaj   +1 more source

Petrology and mineralogy of the Ulaan Del Zr-Nb-REE deposit, Lake Zone, Western Mongolia

open access: yesMongolian Geoscientist, 2020
The Ulaan Del deposit is located in the Lake Zone, Western Mongolia. In the area, middle-late Devonian alkali dykes of the Khalzan Complex are hosted in the middle-late Cambrian granodiorite-tonalite of the Togthohiinshil Complex. The alkali dykes of the
Sanjsuren Oyunbat
doaj   +1 more source

Effects and Mechanism of Fe3+ on Flotation Separation of Feldspar and Epidote with Sodium Oleate at Natural pH

open access: yesSeparations, 2022
The most common beneficiation method for feldspar is flotation with a cationic (amine) collector under acidic conditions. However, there are several disadvantages to this, such as environmental pollution and equipment corrosion.
Weiwei Zeng   +3 more
doaj   +1 more source

Weathering microenvironments on feldspar surfaces: implications for understanding fluid-mineral reactions in soils [PDF]

open access: yes, 2008
The mechanisms by which coatings develop on weathered grain surfaces, and their potential impact on rates of fluid-mineral interaction, have been investigated by examining feldspars from a 1.1 ky old soil in the Glen Feshie chronosequence, Scottish ...
Smith, C.L.   +13 more
core   +1 more source

Influence of the Application Time of Silane for the Bonding Performance between Feldspar or Lithium Disilicate Ceramics and Luting Resin Composites

open access: yesJournal of Functional Biomaterials, 2023
A correct silanization time is essential for successful surface functionalization and sufficient bonding to dental ceramics. The shear bond strength (SBS) of lithium disilicate (LDS) and feldspar (FSC) ceramics and luting resin composite was investigated
Florian Fuchs   +6 more
doaj   +1 more source

On the relationship between K concentration, grain size and dose in feldspar [PDF]

open access: yes, 2018
Previous work has been unable to establish a relationship between K concentration and De in single-grains of feldspar. Here we use four well-bleached sediments with low external dose rate (typically =1.5 Gy ka-1) to investigate this relationship.

core   +1 more source

Photoconductivity on K-feldspar [PDF]

open access: yesInternational Journal of Modern Physics B, 2021
In the development of most phenomenological models used to explain the infrared excited luminescence, a major assumption is usually made in the degree of freedom the excited charge has. One of the two extremes is normally assumed: charge is free to move anywhere over the whole crystal, or it is confined close to the trap and the centers immediately ...
openaire   +1 more source

Bleaching of the post-IR IRSL signal from individual grains of K-feldspar: Implications for single-grain dating [PDF]

open access: yes, 2015
Post-IR IRSL (pIRIR) signals from K-feldspar grains measured at elevated temperatures are increasingly being used for dating sediments. Unfortunately the pIRIR signal from K-feldspars bleaches more slowly than other signals (e.g.

core   +1 more source

Estudo colorimétrico de fritas feldspáticas Colorimetric study of feldsphatic frits

open access: yesCerâmica, 2010
As fritas cerâmicas são materiais de natureza vítrea preparadas por fusão em temperaturas elevadas (~1500 ºC), a partir de uma mistura de matérias-primas minerais.
S. F Santos   +3 more
doaj   +1 more source

Silicon-Solubilizing Media and Its Implication for Characterization of Bacteria to Mitigate Biotic Stress

open access: yesFrontiers in Plant Science, 2020
Silicon (Si), the second most abundant element on earth, remains unavailable for plants' uptake due to its poor solubility. Microbial interventions to convert it in soluble forms are well documented.
Vidisha Bist   +7 more
doaj   +1 more source

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