Results 71 to 80 of about 44,910 (309)

Synthesis of silver doped hydroxyapatite nanospheres using Ouzo effect [PDF]

Processing and Application of Ceramics, 2016
Nanoemulsion technique, based on Ouzo effect, was applied for synthesis of the pure and silver doped (2.5 and 5 mol%) calcium hydroxyapatite (HAp). After calcination at 500 °C fully crystallized powders were obtained.
Marija Prekajski, Bojan Jokić, Ana Kalijadis, Jelena Maletaškić, Nadežda Stanković, Jelena Luković, Branko Matović   +6 more
doaj   +1 more source

Enhancement of the Plant‐Accessible Phosphate Fraction in Sewage Sludge Ashes by Na+ or K+ Addition Prior to Combustion

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
The addition of Na2CO3 or K2CO3 to sewage sludge prior to combustion leads to the production of ashes containing phosphate in the form of buchwaldite‐like phases (Ca(Na/K)PO4). Compared to conventional sewage sludge mono‐ashes, such Na‐ or K‐ashes show greatly increased P‐solubilities and proved to be potent P‐fertiliser materials in greenhouse ...
Lorenz Bier‐Schorr, Viktoria Gräser, Michael Scherer‐Lorenzen, Peter Hajek, Philipp Kurz   +4 more
wiley   +1 more source

A High-Precision ID-TIMS U-Pb Dating Method of Apatite

Yankuang ceshi
Apatite belongs to the hexagonal crystal system and has a relatively high (350-550℃) closure temperature, which can accommodate multiple element substitutions into the crystal lattice.
Jiarun TU, Hongying ZHOU, Yurong CUI, Guozhan LI, Jianzhen GENG, Jian ZHANG   +5 more
doaj   +1 more source

Effectiveness of a rock phosphate solubilizing fungus to increase soil solution phosphate impaired by the soil phosphate sorption capacity

Revista Facultad Nacional de Agronomía Medellín, 2015
Available phosphate (P) deficiency in tropical soils has been recognized as a major factor that limits soil quality and plant performance. To overcome this, it is necessary to add high amounts of soluble P-fertilizers; however, this is inefficient and ...
Nelson Walter Osorio Vega, Mitiku Habte, Juan Diego León Peláez   +2 more
doaj   +1 more source

Cation Distribution in Li2CaSiO4:Gd, Pr, Na Uncovered Through Anomalous Diffraction

European Journal of Inorganic Chemistry, EarlyView.
Li2CaSiO4 co‐doped with Gd3+ and Pr3+ shows strong blue‐to‐UV‐B up‐conversion. Herein, we explore the doping element distribution in order to discern the reason for the strongly supportive co‐doping effect using high‐resolution Rietveld refinement and multiple‐edge anomalous dispersion measurements.
Christoph Rick, Raphael Steinbach, Daniel M. Többens, Thomas Jüstel, Joachim Breternitz   +4 more
wiley   +1 more source

Development of the Nyika Plateau, Malawi: A Long Lived Paleo‐Surface or a Contemporary Feature of the East African Rift?

Geochemistry, Geophysics, Geosystems, 2022
Northern Malawi's Nyika Plateau is a 3,700 km2 large, highly elevated (∼2,500 m) plateau located at the western margin of the Miocene‐Recent Malawi rift and the confluence of multiple Proterozoic orogenic belts.
M. F. McMillan, S. C. Boone, B. P. Kohn, A. J. Gleadow, P. R. Chindandali   +4 more
doaj   +1 more source

Apatite fission track analytical data for samples from ODP Leg 152

, 1996
We test a new approach to understanding the tectonic evolution of passive margins by using fission-track analysis on detrital apatites from sediments deposited offshore East Greenland.
Clift, Peter D, Peter D Clift (6885404), Hurford, Anthony J, Anthony J Hurford (7910804), Carter, Andrew, Andrew Carter (7910801)   +5 more
core   +1 more source

Nanocrystalline apatites: From powders to biomaterials [PDF]

, 2009
Non-stoichiometric nanocrystalline apatite powders are used to elaborate highly-bioactive biomaterials. Their exceptional surface reactivity arises from a structured but rather unstable hydrated layer involving ions in nonapatitic chemical environments ...
Estournès, Claude, Largeot, Céline, Combes, Christèle, Bosc, Françoise, Raimbeaux, Gwenaëlle, Drouet, Christophe, Banu, Mihai, Dechambre, Gérard, Rey, Christian   +8 more
core   +1 more source

Mesozoic–Cenozoic Thermochronology of the Tarim–Southern Tianshan System, NW China

Geological Journal, EarlyView.
Tectonothermal history of the Tarim–Southern Tianshan system compared with the major tectonic events at far‐field plate margins. ABSTRACT The Tarim Basin, an oil‐bearing basin in northwest China, is tectonically and sedimentologically linked to the Southern Tianshan Orogenic Belt.
Shuangfeng Zhao, Wen Chen, Jingbo Sun, Ze Shen, Jie Zhang   +4 more
wiley   +1 more source

Age and origin of fluorapatite-rich dyke from Baranec Mt. (Tatra Mts., Western Carpathians): a key to understanding of the post-orogenic processes and element mobility

Geologica Carpathica, 2016
On the southeastern slope of the Baranec Mount in the Western Tatra Mountains (Slovakia) an apatite-rich pegmatite-like segregation was found in the subvertical fault zone cutting metapelitic rocks.
Gawęda Aleksandra, Szopa Krzysztof, Chew David, Klötzli Urs, Müller Axel, Sikorska Magdalena, Pyka Paulina   +6 more
doaj   +1 more source