Results 21 to 30 of about 7,172,762 (305)

The symbolic meaning of turquoise in Iranian culture

open access: yesӘл-Фараби Атындағы Қазақ Ұлттық Университеті хабаршы шығыстану сериясы, 2021
This article is intended to determine the symbolic meaning of turquoise in Iranian culture with the help of extralinguistic materials. Today, gemstones are not just ordinary useful minerals, because they can become the main object of complex research as ...
K.B. Zhetpisbayeva, B.N. Zhubatova
doaj   +1 more source

pXRF Data Evaluation Methodology for On-Site Analysis of Precious Artifacts: Cobalt Used in the Blue Decoration of Qing Dynasty Overglazed Porcelain Enameled at Customs District (Guangzhou), Jingdezhen and Zaobanchu (Beijing) Workshops

open access: yesHeritage, 2022
In a noninvasive determination, Raman and XRF analyses showed the possibility of identifying specific phases and elements characteristic of the use of recipes and ingredients imported from Europe, according to the information documented in Chinese and ...
Philippe Colomban   +4 more
doaj   +1 more source

In the Name of Blue: Blue Joyce, Blue Gass, Blue Klein [PDF]

open access: yesPolysèmes, 2015
This essay attempts to make color “run” in various ways, to make it run fast (color-fast) between ontological and logical categories. Three ways of becoming-blue, three steps into writing/painting via the color blue are traced: blue Joyce, blue Gass, blue Klein.
openaire   +3 more sources

Uniform Decay of Local Energy and the Semi-Linear Wave Equation on Schwarzchild Space

open access: yes, 2005
We provide a uniform decay estimate of Morawetz type for the local energy of general solutions to the inhomogeneous wave equation on a Schwarzchild background.
C. Morawetz   +7 more
core   +1 more source

Tunable Faraday rotation of ferromagnet thin film in whole visible region coupled with aluminum plasmonic arrays

open access: yesNanophotonics, 2021
To date, the plasmonic nanostructure utilized for magneto-optical (MO) enhancement has been limited to noble metals with resulted enhancement in the green-red part of visible spectrum.
Zhang Feifei   +4 more
doaj   +1 more source

Retirement blues [PDF]

open access: yesJournal of Health Economics, 2016
This paper analyses the short- and longer-term effects of retirement on mental health in ten European countries. It exploits thresholds created by state pension ages in an individual-fixed effects instrumental-variable set-up, borrowing intuitions from the regression-discontinuity design literature, to deal with endogeneity in retirement behaviour. The
openaire   +4 more sources

Effective La-Na Co-Doped TiO2 Nano-Particles for Dye Adsorption: Synthesis, Characterization and Study on Adsorption Kinetics

open access: yesNanomaterials, 2019
The mesoporous La-Na co-doped TiO2 nanoparticles (NPs) have been synthesized by non-aqueous, solvent-controlled, sol-gel route. The substitutional doping of large sized Na+1 and La+3 at Ti4+ is confirmed by X-ray diffraction (XRD) and further supported ...
Inderjeet Singh, Balaji Birajdar
doaj   +1 more source

The Application of Cathodoluminescence (CL) for the Characterization of Blue Pigments

open access: yesHeritage
The combined application of Cathodoluminescence (CL) with Scanning Electron Microscopy (SEM) on paintings and painted surfaces has the potential to identify both organic and inorganic pigments on a micrometre or even nanometre scale.
Eleni Palamara   +5 more
doaj   +1 more source

Some remarks on a pair of seemingly unrelated regression models

open access: yesOpen Mathematics, 2019
Linear regression models are foundation of current statistical theory and have been a prominent object of study in statistical data analysis and inference.
Hou Jian, Zhao Yong
doaj   +1 more source

Best practice production to reduce the water footprint of dairy milk

open access: yesRevista Ambiente & Água, 2020
This study evaluated the impact of diet as a mitigation action to improve the water efficiency of lactating cows. An intensive pasture dairy system was considered to calculate direct and indirect water use.
Julio Cesar Pascale Palhares   +2 more
doaj   +1 more source

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