Results 61 to 70 of about 167,325,945 (199)

Development of techniques for high-resolution spatially-resolved elemental analysis in materials of interest in luminescence dating [PDF]

, 2009
A series of analytical techniques have been developed to characterise the surface distribution of elements in a number of materials of archaeological interest, in support of current and future research in luminescence dating techniques. Under certain
GRAINGER, SCOTT
core  

Post-depositional processes of elemental enrichment inside dark nodular masses of an ancient aeolian dune from A Coruña, Northwest Spain

Geologica Acta, 2013
This paper focuses on a residual ancient aeolian climbing dune from Punta Penaboa (A Coruña, Northwest Spain) showing evidence of post-depositional weathering, particularly the presence of dark brown nodular masses.
M.J. TRINDADE, M.I. PRUDÊNCIO, J.S. SÁNCHEZ, J.R. VIDAL ROMANÍ, T. FERRAZ, D. FERNÁNDEZ MOSQUERA, M.I. DIAS   +6 more
doaj  

Highly efficient blue crystalline organic light‐emitting diodes enabled by a hot exciton sensitizer PyPO

FlexMat, EarlyView.
Two different sensitization structures (hot exciton sensitizer type and exciton nanoaggregate type) were integrated into crystalline host matrix. The resulting crystalline organic light‐emitting diodes exhibit low Joule heat loss ratio and high photon output.
Hao Hu, Bo Yu, Ping Lu, Feng Zhu, Donghang Yan   +4 more
wiley   +1 more source

Development of an x-ray excited optical luminescence microscope (XEOM) [PDF]

X-ray excited optical luminescence (XEOL) refers to the trans-visible emission produced as a consequence of X-ray bombardment and provides an alternative detection method for X-ray absorption spectroscopy (XAS). Whereas XAS measured by conventional means
Hand, M. (Matthew)
core  

Regionally extensive ejecta layer of the Australasian tektite strewn field: the MIS 20/19 large meteorite impact in mainland South-East Asia

Progress in Earth and Planetary Science
Aspects of the Quaternary sedimentary geology of South-East Asia have proven problematic in terms of interpretation as to the origins and relationships of the surface sediment layers.
Paul A. Carling, Toshihiro Tada, Ryuji Tada, Wickanet Songtham, Alan J. Cresswell, David C. W. Sanderson, Naomi Porat, Jaroon Duangkrayom, Stephen E. Darby, Praphas Chansom   +9 more
doaj   +1 more source

Advancing super‐resolution stimulated emission depletion microscopy with luminescent lanthanide nanocrystals

FlexMat, EarlyView.
The state‐of‐the‐art research advances and its cutting‐edge application in super resolution stimulated emission depletion technology based on luminescent lanthanide nanocrystals. Abstract Stimulated emission depletion (STED) microscopy overcomes the diffraction limit to reveal subcellular structures beyond the reach of conventional optical methods ...
Yaqi Chen, Tengfei Ma, Shuping Huang, Wei Guo, Yiming Wu   +4 more
wiley   +1 more source

Rigid polymer matrix enables direct red afterglow from rhodamine dyes without energy transfer

FlexMat, EarlyView.
This work presents a universal and facile strategy to achieve direct red room‐temperature phosphorescence from commercial rhodamine dyes by harnessing the superior rigid confinement of a novel phosphorus‐containing polymer (DOBP), effectively bypassing the complex TS‐FRET process.
Yan Yang, Yongjie Kuang, Tao Pu, Jianhua Huang, Zikai Zhou, Jingwen Yang, Zhi Cao, Zhonghao Wang, Chaolong Yang   +8 more
wiley   +1 more source

Cambios en las propiedades luminiscentes de un feldespato potásico inducidos por efecto térmico y exposición a infrarrojo

Boletín de la Sociedad Española de Cerámica y Vidrio, 2004
Luminescence properties of quartz and feldspars, main components of traditional ceramic materials (bricks, tiles or porcelains), change considerably during the manufactured process that involves a heating treatment up to ∼900ºC (bricks) or ∼1200ºC ...
Correcher, V., García-Guinea, J.
doaj  

Biosensors for Food Safety and Adulteration Monitoring: Applications, Smart Packaging Integration, and Pathways to Intelligent, Field‐Deployable Detection Systems

Food Safety and Health, EarlyView.
Biosensors enable rapid, sensitive, and portable detection of pathogens, contaminants, allergens, and food adulteration. Integration with smart packaging, smartphones, IoT, and machine learning supports real‐time monitoring and intelligent decision‐making, whereas microfluidics, biodegradable materials, explainable AI, and blockchain offer pathways ...
Mohima Akther Any, Abid Hassan Arnab, Liza Akter, Yusuf Chowdhury, Md. Hassan Bin Nabi, Md Abu Rayhan, Nazmul Islam, Wahidu Zzaman   +7 more
wiley   +1 more source

Apatite in Carbonatite Preserving Primary Magmatic, Post‐Magmatic Overgrowth, and Post India‐Asia Collision‐Related Hydrothermal Alteration: Evidenced From U–Pb Isotope and Trace Element Geochemistry

Geological Journal, EarlyView.
U–Pb isotope and trace element geochemistry of apatite from carbonatites of Peshawar Plain Alkaline Igneous Province, western Himalaya shows Permo‐Carboniferous magmatism, an additional magmatic pulse during Cretaceous, and post‐magmatic hydrothermal/metasomatism during Oligocene. ABSTRACT U–Pb isotope and trace element geochemistry of apatite combined
Mehboob ur Rashid, Hafiz U. Rehman, Hao‐Yang Lee, Sun‐Lin Chung, Kaushik Das, Kazumasa Aoki, Muhammad Jawad Zeb, Nasir Ahmad, Muhammad Hussain, Hiroshi Yamamoto   +9 more
wiley   +1 more source