Results 111 to 120 of about 26,824 (328)

Remnants of ”nelsonitic” Apatite as a Possible Source of Phosphorous from Epithermal and Porphyry Copper Deposits of Carpathians (Romania) [PDF]

, 2020
Ioan Pintea, Sorin Silviu Udubasa, Eduard Ghinescu, Elena Iatan, Ion Berbeleac, Lucian Petrescu   +5 more
openalex   +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

Apatites in Gale Crater [PDF]

ChemCam is an active remote sensing instrument suite that has operated successfully on MSL since landing Aug. 6th, 2012. It uses laser pulses to remove dust and to analyze rocks up to 7 m away. Laser-induced breakdown spectroscopy (LIBS) obtains emission
Blaney, D. L., Clegg, S. M., Cousin, A., David, G., Dehouck, E., Drouet, C., Forni, O., Gasnault, O., Lasue, J., Mangold, N., Maurice, S., Meslin, P.-Y., Nachon, M., Newsom, H., Ollila, A. M., Rampe, E. B., Wiens, R.C.   +16 more
core   +1 more source

Surface enrichment of biomimetic apatites with biologically-active ions Mg2+ and Sr2+: A preamble to the activation of bone repair materials [PDF]

, 2008
The surface activation of calcium phosphate-based biomaterials for bone repair is an emerging route for improving bone regeneration processes. One way for such activation is through the exchange of surface calcium ions with biologically-active cations ...
Carayon, Marie-Thérèse, Combes, Christèle, Drouet, Christophe, Rey, Christian   +3 more
core   +1 more source

Apatite Classifier

, 2022
After comparing four commonly employed machine learning algorithms, we chose a scalable end-to-end tree boosting system called XGBoost as the optimal algorithm to tune and yield the final classifiers. It provides a rapid and highly accurate approach to classifying high-dimensional data, such as the variation in apatite trace elements in different types
Zhou, Tong, Qiu, Kun-Feng, Deng, Jung, Chew, David, Hou, Zhao-Liang, Müller, Axel, Lee, Robert, Chen, Huan, Yu, Hao-Cheng   +8 more
openaire   +1 more source

Hotspots, trends, and regional focus on oil or gas exploration: A bibliometric comparative study

Deep Underground Science and Engineering, EarlyView.
This paper explores the research trends in global oil and gas exploration through the bibliometric analysis of 3460 articles collected from the Web of Science database on oil and gas exploration published from 2013 to 2023. The research hotspots, objects, regional distribution, methods, and evaluation methods of oil and gas exploration are analyzed and
Jihong Wang, Zhongkai Li, Jianguo Wang, Zhiqiang Li   +3 more
wiley   +1 more source

Sorption Mechanism of Europium by Apatite Using Rutherford Backscattering Spectroscopy and Resonant Nuclear Reaction Analysis. [PDF]

, 1997
Toshihiko Ohnuki, Naofumi Kozai, Hiroshi Isobe, Takashi Murakami, Shunya Yamamoto, Yasushi Aoki, H. Naramoto   +6 more
openalex   +1 more source

Development and in vitro evaluation of chitosan nanoparticles encapsulating Phoenix dactylifera L. (Ajwah) seed extract with supporting in silico molecular docking analysis

Food Biomacromolecules, EarlyView.
Abstract This research describes the engineering of chitosan nanoparticles (CS NPs) via ionic gelation to I'm double or somethingencapsulate Ajwah seed extract (ASE), repurposing a plant waste product for its documented antioxidant and anticancer potential.
Jailan E. Elhalawani, Amro Shetta, Wael Mamdouh   +2 more
wiley   +1 more source

Structural studies of hydrated samples of amorphous calcium phosphate and phosphoprotein nanoclusters [PDF]

, 2016
There are abundant examples of nanoclusters and inorganic microcrystals in biology. Their study under physiologically relevant conditions remains challenging due to their heterogeneity, instability, and the requirements of sample preparation.
Holt, Carl, Härtlein, Michael, Lenton, Samuel, Lund University., Lund University., Müller, Harrald, Nylander, Tommy,, Sawyer, Lindsay, Teixeira, Susana C M   +8 more
core   +1 more source

Neoarchean Arc Magmatism and Crust Recycling in the Northern Marginal Zone of the Limpopo Complex, Zimbabwe: New Insights From Zircon U‐Pb‐Hf Isotopes of a Charnockite Suite

Geological Journal, EarlyView.
Charnockites with 2691–2607 Ma magmatic ages from the NMZ show arc‐magmatic geochemical signatures. They correspond to the lower‐crustal equivalent of the Chilimanzi Suite Granite in the Zimbabwe Craton. Lu‐Hf isotopic data of magmatic zircons show negative εHf(t) values (−11.18 to −2.20) with TDMC ages of 3699–3158 Ma, suggesting their protolith ...
Toshiaki Tsunogae, Md. Sazzadur Rahman, Gao Pin, M. Santosh, Wataru Fujisaki, Sam Uthup, Prince Mandingaisa   +6 more
wiley   +1 more source