Results 61 to 70 of about 280 (249)
PECULIARITIES OF SEARCH FOR PLACER DEPOSITS OF GOLD OF THE SOUTH OF UKRAINE
Геологія і корисні копалини Світового океану, 2021 The long-term high level of world gold prices against the background of depletion of reserves with easily extracted metal leads to the search for and introduction into industrial development of deposits, even with low-tech ores and sands.
Lomakin I.E.
doaj +1 more source
Advanced Engineering Materials, EarlyView.Digitalizing electroplating requires both domain knowledge and interoperability. This work introduces PlatOn, a domain ontology for trivalent chromium plating and coating characterization, and a hybrid pipeline that aligns it to a mid‐level reference ontology by combining eight similarity metrics with language model reasoning. Expert‐validated mappings
Janik Harter +10 more
wiley +1 more source
Trabajadores y técnicas mineras andinas en las fiebres del oro del mundo en el siglo XIX
Nuevo mundo - Mundos Nuevos, 2015 During the XIX century, the alluvial gold findings in the United Sates, Australia, New Zealand and other territories, attracted numerous adventurers, including South American immigrants with knowledge in mining tasks.
Inés Herrera Canales
doaj +1 more source
Advanced Engineering Materials, EarlyView.Geometrical modifications on nitrocellulose membranes can result in observable differences in signal intensity relative to a reference membrane (top and bottom left). Using two reference experiments, we have developed a theoretical model that can reproduce the experimentally observed flow changes and provide information on membrane parameters, e.g ...
Maria Dimaki +2 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco +8 more
wiley +1 more source
Multiscale (microscopic to remote sensing) preliminary exploration of auriferous-uraniferous marbles: A case study from the Egyptian Nubian Shield. [PDF]
Sci Rep, 2023 Shebl A, Hamdy M.
europepmc +1 more source
Advanced Functional Materials, EarlyView.Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein +4 more
wiley +1 more source
THE FIRST FINDING OF NATIVE BISMUTH, WAYLANDITE AND BEYERITE IN ALLUVIAL GOLD PLACER DEPOSITS OF ANGARA REGION, YENISEI RIDGE [PDF]
Минералогия, 2017 The pebbles from alluvial gold placer deposits of the upper reaches of the Tatarka river in Angara region, Yenisei Ridge, are composed of bismuth minerals: crystal aggregates of native bismuth and pseudomorphic secondary oxides, carbonates, and ...
S.V. Pribavkin +5 more
doaj
User-centered design of central venous access device documentation. [PDF]
JAMIA Open, 2022 Kandaswamy S +10 more
europepmc +1 more source
From Food to Power: Hydrogel Thermoelectrics for Ingestible Electronics
Advanced Functional Materials, EarlyView.We introduce a fully edible thermoelectric–electrochromic platform that harvests heat from food and converts it into a visible color change. N‐type and p‐type hydrogel thermoelectric generators connected in series power anthocyanin‐based electrochromic displays, demonstrating the feasibility of safe, biodegradable, ingestible systems for on‐food ...
Antonia Georgopoulou +3 more
wiley +1 more source