Results 31 to 40 of about 646,397 (343)

The transition zone as a host for recycled volatiles: Evidence from nitrogen and carbon isotopes in ultra-deep diamonds from Monastery and Jagersfontein (South Africa) [PDF]

open access: yes, 2017
Sublithospheric (ultra-deep) diamonds provide a unique window into the deepest parts of Earth's mantle, which otherwise remain inaccessible. Here, we report the first combined C- and N-isotopic data for diamonds from the Monastery and Jagersfontein ...
Gurney, J.J.   +6 more
core   +1 more source

Superconductivity in Diamond. [PDF]

open access: yesChemInform, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Ekimov, E. A.   +6 more
openaire   +3 more sources

Colloidal diamond [PDF]

open access: yesNature, 2020
Self-assembling colloidal particles in the cubic diamond crystal structure could potentially be used to make materials with a photonic bandgap1-3. Such materials are beneficial because they suppress spontaneous emission of light1 and are valued for their applications as optical waveguides, filters and laser resonators4, for improving light-harvesting ...
Mingxin He   +6 more
openaire   +2 more sources

Efficient Code for Relativistic Quantum Summoning [PDF]

open access: yes, 2016
Summoning retrieves quantum information, prepared somewhere in spacetime, at another specified point in spacetime, but this task is limited by the quantum no-cloning principle and the speed-of-light bound. We develop a thorough mathematical framework for
Khalid, Abdullah   +2 more
core   +4 more sources

Selection of reagent compositions for modifying spectral characteristics of weakly and anomalously luminescent diamonds in the process of X-ray luminescence separation [PDF]

open access: yesJournal of Mining and Metallurgy. Section A: Mining, 2023
The feasibility of targeted modification of the spectral properties of weakly and anomalously luminescent diamonds by modifying reagents containing luminophores based on sulfides and zinc orthosilicate, characterized by medium and low deviation of the ...
Chanturiya V.A.   +3 more
doaj   +1 more source

Sulfur isotopes in diamonds reveal differences in continent construction

open access: yesScience, 2019
Sulfur tells tectonic secrets Plate tectonics dominates how the surface of Earth is shaped over geologic time; however, we do not know when this important process started on Earth. Smit et al.
K. Smit, S. Shirey, E. Hauri, R. Stern
semanticscholar   +1 more source

Optimizing composition and application conditions of agents for modifying spectral characteristics of diamonds in X-ray luminescence separation

open access: yesГорные науки и технологии, 2023
One of the research areas focused on improving the efficiency of diamond-bearing kimberlite beneficiation processes involves the utilization of technology aimed at enhancing the recovery of weakly and anomalously luminescent diamonds during the X-ray ...
Chanturiya V. A.   +4 more
doaj   +1 more source

Insight into a Fenton-like Reaction Using Nanodiamond Based Relaxometry

open access: yesNanomaterials, 2022
Copper has several biological functions, but also some toxicity, as it can act as a catalyst for oxidative damage to tissues. This is especially relevant in the presence of H2O2, a by-product of oxygen metabolism.
Sandeep Kumar Padamati   +4 more
doaj   +1 more source

Deforming diamond

open access: yesIMA Journal of Applied Mathematics, 2016
For materials science, diamond crystals are almost unrivaled for hardness and a range of other properties. Yet, when simply abstracting the carbon bonding structure as a geometric bar-and-joint periodic framework, it is far from rigid. We study the geometric deformations of this type of framework in arbitrary dimension d, with particular regard to the ...
Borcea, Ciprian, Streinu, Ileana
openaire   +2 more sources

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