Results 11 to 20 of about 32,872 (215)

Narrative Didactics in Mathematics Education: Results from a University Geometry Course

open access: yesOpen Education Studies, 2023
In a Swedish second semester course on Euclidean and non-Euclidean geometry in mathematics education at Karlstad University, a bridging teaching strategy comprising elements from Mathematics, Didactics, History, Literature, and Technology was applied by ...
Brandl Matthias, Vinerean Mirela
doaj   +1 more source

Study of vaporization of LiI, LiI/C70, LiI/LiF/C70 from the Knudsen cell located into ionization chamber of the mass spectrometer [PDF]

open access: yesJournal of the Serbian Chemical Society, 2014
The vaporization of LiI, LiI/C70 and LiI/LIF/C70 were studied using a Knudsen cell located into ionization chamber of a magnetic sector mass spectrometer in a temperature range from 350 ˚C to 850 ˚C. Аs the ion species, LinI+ (n = 2, 3, 4, and 6)
Đustebek Jasmina   +2 more
doaj   +1 more source

Investigation of mechanical properties of C70 nanowhiskers through bending and nanoindentation

open access: yesCarbon Trends, 2023
The mechanical properties of C70 nanowhiskers (NWs) grown using the liquid–liquid interfacial precipitation method were investigated through bending and nanoindentation experiments.
Miyabi Watanabe   +3 more
doaj   +1 more source

Improved Spectrophotometric Analysis of Fullerenes C60 and C70 in High-solubility Organic Solvents [PDF]

open access: yes, 2015
Fullerenes are among a number of recently discovered carbon allotropes that exhibit unique and versatile properties. The analysis of these materials is of great importance and interest.
Belton, Daniel J., Torpe, Alexander
core   +1 more source

Chameleon-like behaviour of cyclo[n]paraphenylenes in complexes with C70: on their impressive electronic and structural adaptability as probed by Raman spectroscopy [PDF]

open access: yes, 2014
Este artículo ha sido publicado por Royal Society of ChemistryA series of four 1:1 host-guest supramolecular complexes of [n]CPPs and C70 have been analyzed by Raman spectroscopy in solid state and complemented with the analysis of their spectroscopic ...
Casado-Cordon, Juan
core   +1 more source

Formation of Water-Soluble Fullerenes [C60,C70] under Ultrasonication and Antioxidant Effect

open access: yesEurasian Chemico-Technological Journal, 2003
The water-soluble fullerenes [C60, C70] are prepared with fullerenes [C60, C70] and a mixture of oxidants (v/v) at the ratio of 3:1 under ultrasonic condition at room temperature.
Weon-Bae Ko   +2 more
doaj   +1 more source

From spin-polarized interfaces to giant magnetoresistance in organic spin valves [PDF]

open access: yes, 2014
We calculate the spin-polarized electronic transport through a molecular bilayer spin valve from first principles, and establish the link between the magnetoresistance and the spin-dependent inter- actions at the metal-molecule interfaces.
Brocks, Geert   +2 more
core   +2 more sources

Deep-red circularly polarised luminescent C70 derivatives

open access: yesScientific Reports, 2021
Optically active fullerenes, including C60 and C70 derivatives carrying organic substituents, are used in a range of applications because of their unique spectroscopic, catalytic, and chiral recognition properties.
Haruka Kano   +5 more
doaj   +1 more source

Formation of Zwitterionic Fullerodendron Using a New DBN-Focal Dendron

open access: yesSensors, 2010
A new poly(amidoamine) dendron having 1,5-diazabicyclo[4.3.0]non-5-ene (DBN) at the focal point was synthesized. Interestingly, formation of zwitterionic fullerodendrons (λmax = 930 nm for C60 and 795 nm for C70) were observed by Vis-NIR spectroscopy ...
Takahiro Sasamori   +5 more
doaj   +1 more source

Early age cracking potential of inner lining of coal mine frozen shaft

open access: yesEnergy Reports, 2022
Recently, the application of high performance concrete (HPC) is popular in inner lining of frozen shaft in water-rich stratum. The circular crack of inner lining concrete easily appears in the early age (0∼240 h) leading to water burst accidents in the ...
Jiwei Zhang   +4 more
doaj   +1 more source

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