Results 61 to 70 of about 3,135 (181)

Minerals-concentrators of rare-earth elements in basites-ultrabasites intrusives of Norilsk district

Известия высших учебных заведений: Геология и разведка, 2017
The conditions of being, the history of formation and transformation of minerals-concentrators of rare-earth elements (REE) - apatite minerals group and epidote minerals group, have been studied and described.
Yu. D. Gritsenko, A. A. Serova
doaj   +1 more source

Elastin-Like Protein, with Statherin Derived Peptide, Controls Fluorapatite Formation and Morphology

Frontiers in Physiology, 2017
The process of enamel biomineralization is multi-step, complex and mediated by organic molecules. The lack of cells in mature enamel leaves it unable to regenerate and hence novel ways of growing enamel-like structures are currently being investigated ...
Kseniya Shuturminska, Kseniya Shuturminska, Nadezda V. Tarakina, Nadezda V. Tarakina, Helena S. Azevedo, Helena S. Azevedo, Helena S. Azevedo, Andrew J. Bushby, Andrew J. Bushby, Alvaro Mata, Alvaro Mata, Alvaro Mata, Paul Anderson, Maisoon Al-Jawad, Maisoon Al-Jawad   +14 more
doaj   +1 more source

Validity of the Apatite/Merrillite Relationship in Evaluating the Water Content in the Martian Mantle: Implications from Shergottite Northwest Africa (NWA) 2975

Geosciences, 2017
Phosphates from the Martian shergottite NWA 2975 were used to obtain insights into the source and subsequence differentiation of the melt/melts.
Ewa Słaby, Hans-Jürgen Förster, Richard Wirth, Alicja Wudarska, Łukasz Birski, Izabela Moszumańska   +5 more
doaj   +1 more source

In Vitro Cytotoxicity Evaluation of Nanosized Hydroxyapatite and Fluorapatite on Cell Lines and Their Relevance to the Alveolar Augmentation Process

Journal of Functional Biomaterials
Background/Objectives: Materials with an apatite structure were investigated in vitro in dental bone augmentation procedures. This scientific study aimed to compare nanosized hydroxyapatite (nHAp) and fluorapatite (nFAp) materials in the form of tablets ...
Wojciech Zakrzewski, Maria Szymonowicz, Anna Nikodem, Agnieszka Rusak, Zbigniew Rybak, Katarzyna Szyszka, Dorota Diakowska, Benita Wiatrak, Rafal J. Wiglusz, Maciej Dobrzyński   +9 more
doaj   +1 more source

Physicochemical Characteristics and Mineral Separation of A Phosphate Rock with Siliceous and Carbonates Gangues

工程科学与技术, 2010
:The physicochemical properties and mineral separation of a phosphate rock with siliceous and carbonates gangues were investigated. The results showed that this ore mainly contains flour-apatite, calcite and quartz.
Guo Fang, Li Jun, Li Wei, Yao Qing
doaj  

Synthesis Conditions and Sorption Mechanism of F− Sorbents Utilizing Seashells

Journal of MMIJ
Fluoride(F-) is present in wastewater produced by various industries, such as semiconductor, glass processing, mining and smelting. Development of high-efficient and low-cost treatment processes of wastewater is desirable.
Wataru HAREYAMA, Taku NOZAWA
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The effect of the synthesis method on the strength characteristics of ceramics based on fluorapatite

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов
The article discusses the possibility of obtaining hardened bioceramics based on fluorapatite. Composite materials were obtained in two ways. In the first case, by mechanical synthesis of nanostructured hydroxyapatite obtained by precipitation from a ...
E.A. Bogdanova, V.M. Skachkov
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Study on the Dewatering Mechanism of Fine Phosphate Tailings Slurrys Based on the Particle-Agent Interaction and Sedimentation Property

Separations
Fluorapatite is a typical phosphate rock resource. Fluorapatite tends to generate fine mud agglomeration, which induces dehydration challenges owing to its inherently fine particle size and negative surface charge.
Fang Li, Yuping Fan, Yuanpeng Fu, Xiaomin Ma, Xianshu Dong, Yangge Zhu, Wei Xiao, Wenjie Fang   +7 more
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A Cleaner Phosphoric Acid Production Path: Simultaneous P Extraction and REE Enrichment via Controlled HCl Leaching

Separations
Rare earth elements (REEs), as significant associated resources in sedimentary phosphate deposits, are commonly processed via the conventional hydrochloric acid wet-process phosphoric acid route (IMI process).
Jiawei Lin, Jue Kou, Chunbao Sun, Xiaojin Wen, Hongda Xu   +4 more
doaj   +1 more source

Bifurcation between pre- and post-nucleation models in fluorapatite Liesegang patterns

Frontiers in Physics
Liesegang patterns, characterized by periodic precipitation, typically follow either a pre-nucleation or post-nucleation model. However, the factors governing the selection of either pathway in a single chemical system are poorly understood.
Kotoha Harima, Takuto Takeda, Hideki Nabika   +2 more
doaj   +1 more source