Results 61 to 70 of about 1,954 (252)

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

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

The Late Mesozoic granodiorite and polymetallic mineralization in southern Anhui Province, China: A perspective from apatite geochemistry

Solid Earth Sciences, 2019
The region of southern Anhui Province (SAP) is one of Late Mesozoic magmatic belts and copper-molybdenum-gold-tungsten polymetallic ore districts in China, but the relationship of polymetallic mineralization and related granodiorite remains unclear ...
Lin Qian, Yu Wang, Jiancheng Xie, Weidong Sun   +3 more
doaj   +1 more source

Thermochronologic Constraints on the Extensional History of the Ibex Hills, Southeastern Black Mountains, Death Valley, California

Geological Journal, EarlyView.
A. Modeled T‐t paths for samples in the northern Ibex Hills, showing steady cooling throughout much of the Cenozoic, until rapid Miocene cooling. B. Weighted mean paths for each sample in this study. Note that all show a rapid cooling event at or just after 10 Ma, which is interpreted to represent exhumation as a result of regional extenstion ...
Zachariah D. Fleming
wiley   +1 more source

Tectono‐Sedimentary Evolution of the Neogene İnegöl Basin (NW Anatolia): Constraints on Transtensional Basin Development at the Junction of the Western Anatolian Extensional Province and the North Anatolian Fault Zone

Geological Journal, EarlyView.
The study outlines the tectono‐sedimentary evolution of the İnegöl Basin in north‐western Anatolia. Basin formation was controlled by interacting extensional and strike‐slip fault systems linked to uplift of the Uludağ Massif. Terrestrial sedimentation from the Miocene to Pleistocene is reconstructed using abundant fossil mammal assemblages that ...
M. Cihat Alçiçek, Volkan Karabacak, Serdar Mayda   +2 more
wiley   +1 more source

Physico-chemical characteristics of Ca/P ratio on the composition and structure of oxygenated apatite

Communications in Science and Technology
Phosphocalcic apatites have osteoconductive and bioactive properties that make them suitable for bone reconstruction. But, they are inactive against pathogenic microorganisms that can infect bone tissue. To overcome this limitation, we synthesized oxygen-
S. Jerdioui, H. Bouammalia, E. Mejdoubi, R. Touzani, K. Azzaoui, Belheir Hammouti, R. Sabbahi, Asep Bayu Dani Nandiyanto, L. L. Elansari   +8 more
doaj   +1 more source

New Approach Methodologies (NAMs) in Alternative Methods: A Comparative Cytotoxicity Analysis of Nanostructured Hydroxyapatite in Adipose Stem Cells Spheroids

Journal of Applied Toxicology, EarlyView.
ABSTRACT Toxicological assessment is essential in NP approval for health and medical applications. Although 2D cell culture has been widely used, 3D models, especially spheroids, provide better predictive value for toxicological risk assessments since they replicate complex cellular interactions more accurately.
Bianca Montenegro, Rosângela Mayer Gonçalves, Marcelle Gomes Pegurier, Isabelle Amorim, Alexandre Malta Rossi, Leandra Santos Baptista   +5 more
wiley   +1 more source

Apatite Fission Track Signatures of the Ross Sea Ice Flows During the Last Glacial Maximum

Geochemistry, Geophysics, Geosystems, 2020
The catchment for the Ross Sea ice includes both the East and the West Antarctic ice sheets, but the mass balance is a direct response to climate change.
X. Li, M. Zattin, V. Olivetti
doaj   +1 more source

From Highlands to Henge: Refining the Provenance and Transport Pathways of Stonehenge's Altar Stone

Journal of Quaternary Science, EarlyView.
ABSTRACT The Altar Stone, the 6000 kg central sandstone megalith at Stonehenge in southern England, is suggested to have originated from the Orcadian Basin in northeast Scotland, some 700 km away. However, its source location within this large basin remains unresolved and its mode of transport uncertain.
Anthony J. I. Clarke, Remy L. J. Veness, Christopher L. Kirkland, Chris D. Clark, Niall Gandy, Andy Emery, Sarah L. Bradley, Jeremy C. Ely, Ignéczi Ádám   +8 more
wiley   +1 more source

Oxygen-rich apatites: toward preventive antiseptic strategies in bone and dental applications

Beni-Suef University Journal of Basic and Applied Sciences
Background Oxygen-rich apatites have emerged as a class of multifunctional biomaterials that integrate intrinsic antiseptic activity with regenerative properties relevant to calcified tissues (bones and teeth), without the use of external antibiotics ...
Soumia Belouafa, Mohammed Berrada
doaj   +1 more source