Retraction: A study on the luminescence properties of gamma-ray-irradiated white light emitting CaAlSiO:Dy phosphors fabricated using a combustion-assisted method.

[This retracts the article DOI: 10.1039/C6RA04913C.].

Correction and removal of expression of concern: A study on the luminescence properties of gamma-ray-irradiated white light emitting CaAlSiO:Dy phosphors fabricated using a combustion-assisted method.

[This corrects the article DOI: 10.1039/C6RA04913C.].

Genetic Evidence for Modifying Oceanic Boundaries Relative to Fiji.

We present the most comprehensive genetic characterization to date of five Fijian island populations: Viti Levu, Vanua Levu, Kadavu, the Lau Islands, and Rotuma, including nonrecombinant Y (NRY) chromosome and mitochondrial DNA (mtDNA) haplotypes and haplogroups. As a whole, Fijians are genetically intermediate between Melanesians and Polynesians, but the individual Fijian island populations exhibit significant genetic structure reflecting different settlement experiences in which the Rotumans and the Lau Islanders were more influenced by Polynesians, and the other Fijian island populations were more influenced by Melanesians. In particular, Rotuman and Lau Islander NRY chromosomal and mtDNA haplogroup frequencies and Rotuman mtDNA hypervariable segment 1 region haplotypes more closely resemble those of Polynesians, while genetic markers of the other populations more closely resemble those of the Near Oceanic Melanesians.

Photoluminescence and thermoluminescence properties of Eu doped and Eu ,Dy co-doped Ba MgSi O phosphors.

In this work, we report the preparation, characterization, comparison and luminescence mechanisms of Eu -doped and Eu ,Dy -co-doped Ba MgSi O (BMSO) phosphors. Prepared phosphors were synthesized via a high temperature solid-state reaction method. All prepared phosphors appeared white.

Fracto-mechanoluminescence and thermoluminescence properties of UV and γ-irradiated Ca₂Al₂SiO₇:Ce³⁺ phosphor.

Ce(3+)-doped calcium aluminosilicate phosphor was prepared by a combustion-assisted method at an initiating temperature of 600°C. Structural characterization was carried out using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The absorption spectra of Ca2Al2SiO7:Ce(3+) showed an absorption edge at 230 nm.

Genetic structure among Fijian island populations.

We examined nine Y chromosome short tandem repeats (Y-STRs) and the mitochondrial DNA (mtDNA) hypervariable segment 1 region in the Fijian island populations of Viti Levu, Vanua Levu, Kadavu, the Lau islands and Rotuma. We found significant genetic structure among these populations for the Y-STRs, both with and without the Rotumans, but not for the mtDNA. We also found that all five populations exhibited the sex-biased admixture associated with areas settled by Austronesian-speaking people, with paternal lineages more strongly associated with Melanesian populations and maternal lineages more strongly associated with Polynesian populations.