Publications by authors named "M Gushiken"
Article Synopsis
- Gold mining is the leading cause of mercury pollution globally, with significant health risks and ecological impacts, especially in the Peruvian Amazon where extensive mining practices release large amounts of mercury into the environment.
- A study in the Madre de Dios region assessed mercury levels in soils from abandoned gold mine sites and nearby forests, finding that none of the samples exceeded established environmental standards for soil quality.
- The study revealed that while mercury concentrations were low in mine spoils, surprising higher levels were detected in undisturbed old-growth forests adjacent to the mining sites, indicating a complex interaction that needs consideration in land restoration and sustainable development efforts.
Article Synopsis
- - The study focuses on designing molecular systems that self-assemble with a high level of accuracy and multiple hierarchical levels to enhance the understanding of structure-function relationships in organic materials.
- - Researchers developed a self-assembly system using two regioisomeric hydrogen-bonding molecular semiconductors, which demonstrate selectivity in their assembly patterns due to the strong directionality of the hydrogen bonds.
- - The distinct structural organization of these regioisomers impacts their interaction with fullerene derivatives, leading to significant differences in photovoltaic performance, despite having similar core optoelectronic properties.
Five new polyketide endoperoxides, manadodioxans A-E, were isolated from the marine sponge Plakortis bergquistae. Manadodioxan E showed antimicrobial activity against Escherichia coli at 10 μg/disk, while its oxo congener, manadodioxan D, was inactive.
View Article and Find Full Text PDFAims/introduction: Although male diabetic patients have an increased risk of fracture, there is little information about this in the literature. The association between heel bone stiffness and the lifestyle of male patients with diabetes was evaluated.
Materials And Methods: The study included 108 participants with type 2 diabetes mellitus patients and 168 age-adjusted, healthy male volunteers.
Supramolecular rosettes of oligothiophenes that do not bear long aliphatic tails have been designed as semiconducting nanomaterials for solution-processable bulk heterojunction solar cells. The rosettes consist of six barbiturated thienyl[oligo(hexylthiophene)] units (Bar-T-hTn ; n=3,4,5) aggregated by multiple hydrogen bonds, which have been directly visualized by scanning tunneling microscopy (STM) at a solid-liquid interface. (1) H NMR spectroscopy in [D8 ]toluene showed that Bar-T-hTn exists as a mixture of monomers and small hydrogen-bonded aggregates.
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