Results 21 to 30 of about 32,961 (360)

Use of Natural Raw Material Mixture and Natural Raw Potassium as Substitute for Chemical Fertilizers in Feeding Washington Navel Orange Trees under Kafr El Sheikh Conditions. [PDF]

open access: yesJournal of Plant Production, 2017
This study was done in a private orchard at Kafr El-Sheikh governorate, Egypt, during 2012 and 2013 seasons on 18 years old Washington navel orange trees on sour orange rootstock, to study the effect of fertilization with natural raw material mixture and
Somaia El-Sayed, A. El-Shereif
doaj   +1 more source

Perbandingan porselen kedokteran gigi swa-sintesis berbahan baku pasir felspar Pangaribuan dan Sukabumi

open access: yesMajalah Kedokteran Gigi Indonesia, 2017
Comparison self-synthesized dental porcelain between feldspar from Pangaribuan and Sukabumi. Dental porcelain material as one of the esthetic indirect restorations in Indonesia is mostly imported.
Joseph Gunawan   +3 more
doaj   +1 more source

Bioactivity of leucite containing glass - ceramics using natural raw materials [PDF]

open access: yesMaterials Research, 2014
Glass compositions were carefully prepared, using natural quartz and potassium feldspar as a part of the starting raw materials. The solids were prepared so as to have theoretical stoichiometric leucite and 45S5 Bioglass in different L/Bg weight ratios ...
Franco Matías Stábile   +1 more
doaj   +1 more source

Ice nucleation properties of K-feldspar polymorphs and plagioclase feldspars [PDF]

open access: yesAtmospheric Chemistry and Physics, 2019
Abstract. The relation between the mineralogical characteristics of size selected feldspar particles from 50–800 nm and their ability to act as ice nucleating particles (INPs) in the immersion mode is presented. Five polymorph members of K-feldspar (two microclines, orthoclase, adularia and sanidine) and four Na/Ca- rich feldspar samples (three ...
A. Welti   +3 more
openaire   +3 more sources

FROM THE HISTORY OF OPENING AND DEVELOPMENT ORE RICHES OF THE CHERRY MOUNTAINS IN THE URALS [PDF]

open access: yesМинералогия, 2017
The main stages of exploration of mineral deposits and the contribution of many researchers to the study of geology and mineralogy of the Vishnevy Mountains in the Urals are considered.
V.I. Popova, S.N. Nikandrov
doaj  

Phlogopite and associated minerals from Permian minettes in Devon, South England [PDF]

open access: yesBulletin of the Geological Society of Finland, 1985
Electron-microprobe analyses were made of mica, clinopyroxene, alkali feldspar, Fe‒Ti oxides and apatite in Permian minettes from Hannaborough Quarry, Killerton Park and Loxbeare Farm, south Devon, England.
A.P. Jones, J.V. Smith
doaj   +1 more source

Cathodoluminescence Characterization of Maskelynite and Alkali Feldspar in Shergottite (Dhofar 019) [PDF]

open access: yes, 2009
Dhofar 019 is classified as an olivine-bearing basaltic shergottite and consists of subhedral grains of pyroxene, olivine, feldspar mostly converted to maskelynite and minor alkali feldspar. The CL spectrum of its maskelynite exhibits an emission band at
Gucsik, Arnold   +11 more
core   +1 more source

Confronting Solid‐State Shear Bias: Magmatic Fabric Contribution to Crustal Seismic Anisotropy

open access: yesGeophysical Research Letters, 2023
Seismic anisotropy is controlled by aligned rock‐forming minerals, which most studies attribute to solid‐state shear with less consideration for magmatic fabric in plutonic rocks (rigid‐body rotation of crystals in the presence of melt).
Michael G. Frothingham   +4 more
doaj   +1 more source

Low temperature synthesis of porous silicate ceramics [PDF]

open access: yesScience of Sintering, 2007
Impregnation of a polyurethane sponge with kaolin, feldspar, silica, fusible glass slurry followed by temperature treatment in air in the temperature range 800-1000 0 C leads to the formation of aluminosilicate ceramics with a set pore size.
Méndez Enríquez Y.   +6 more
doaj   +1 more source

Rapid Analysis of Feldspar by X-ray Diffractometry Rietveld Refinement Method

open access: yesYankuang ceshi, 2017
The content of minerals in feldspar can be calculated by chemical analytical results, but the analytical process is long and the calculation process is complex.
RAN Jing, DU Gu, WANG feng-yu
doaj   +1 more source

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