Results 71 to 80 of about 277,305 (372)

Contamination of surface waters by mining wastes in the Milluni Valley (Cordillera Real, Bolivia): Mineralogical and hydrological influences [PDF]

, 2008
This study is one of very few dealing with mining waste contamination in high altitude, tropical-latitude areas exploited during the last century. Geochemical, mineralogical and hydrological characterizations of potentially harmful elements (PHEs) in ...
Isaure, Marie-Pierre, Probst, Anne, Roulet, Marc, Salvarredy-Aranguren, Matias Miguel   +3 more
core   +3 more sources

Data-Driven Design of Ecofriendly Thermoelectric High-Entropy Sulfides.

Inorganic Chemistry, 2018
High-entropy compounds with compositional complexity can be designed as new thermoelectric materials. Here a data-driven model was developed, which chose suitable elements to reduce the enthalpy of formation and hence to increase the chance of single ...
Ruizhi Zhang, F. Gucci, Hongyu Zhu, Kan Chen, M. Reece   +4 more
semanticscholar   +1 more source

In‐Situ Growth of 2D MOFs as a Molecular Sieving Layer on SnS2 Nanoflakes for Realizing Ultraselective H2S Detection

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
The ultraselective H2S detection of the ZIF‐L/SnS2 heterostructure is demonstrated. The introduction of 2‐dimensional (2D) breathable ZIF‐L results in a substantial increase in H2S selectivity attributable to the molecular sieving effect, which impedes the permeation of gases with large kinetic diameters and high polarity.
Soo Min Lee, Yeong Jae Kim, Seon Ju Park, Woo Seok Cheon, Jaehyun Kim, Gi Baek Nam, Youngeun Kim, Ho Won Jang   +7 more
wiley   +1 more source

New Insights into the Petrography and Mineralogy of the Malenkiy Site (Pay-Khoy, Nenets Autonomous District)

Учёные записки Казанского университета: Серия Естественные науки
The rock composition and ore mineralization of the Malenkiy site located within the Khengur gabbro-dolerite complex of the Pay-Khoy were examined. Petrogeochemical analysis revealed two varieties of the studied rocks: fine-crystalline quartz and medium ...
R. I. Shaibekov, A. M. Shmakova, E. M. Tropnikov, G. V. Ignatiev   +3 more
doaj   +1 more source

Lead and neodymium isotopic results from metabasalts of the Haveri Formation, southern Finland: Evidence for Palaeoproterozoic enriched mantle [PDF]

Bulletin of the Geological Society of Finland, 1999
Tholeiitic metabasalts and coexisting sulphides have been analysed for their Pb and Nd isotopic compositions from the Proterozoic Haveri Formation, which forms the basal unit of the Tampere Schist Belt in southern Finland. Ten whole rock samples analysed
M. Vaasjoki, H. Huhma
doaj   +1 more source

A kinetic and theoretical study of the borate catalysed reactions of hydrogen peroxide: the role of dioxaborirane as the catalytic intermediate for a wide range of substrates [PDF]

, 2012
Our recent work has provided new insights into the equilibria and species that exist in aqueous solution at different pHs for the boric acid – hydrogen peroxide system, and the role of these species in oxidation reactions. Most recently, (M. C.
Abel, Adam, Amels, Bennett, Bunton, Chernyshov, Curci, Curci, Curci, D. Martin Davies, Davies, Davies, Davies, Duffin, Durrant, Fortnum, Hansch, Hanson, Hanson, Hoffmann, Hoffmann, Hussain, Ingri, Kamyshny, Lin, Lin, Marcus C. Durrant, Marenich, Maya, Mckillop, McKillop, Michael E. Deary, Mohammad, Muzart, Ogata, Pizer, Salentine, Sawaki, Sawwan, Schubert, Spessard, Wilson, Wilson, Wilson   +43 more
core   +1 more source

Thermally Induced Gelling Systems Based on Patchy Polymeric Micelles

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
A novel strategy to design thermally induced gelling systems with tunable material properties is reported. Polymeric mixed‐shell micelles displaying multiple thermosensitive patchy domains formed hydrogels by assembling into well‐entangled worm‐like network structures upon heating to body temperature. The patchy micelle design significantly affects the
Binru Han, Shota Fujii, André J. van der Vlies, Masoud Ghasemi, Joshua T. Del Mundo, Sarah N. Kiemle, Esther W. Gomez, Enrique D. Gomez, Ralph H. Colby, Urara Hasegawa   +9 more
wiley   +1 more source

Concrete-like till: A scientific and economic problem [PDF]

Bulletin of the Geological Society of Finland, 2000
In Finland, extremely compact and hard, concrete-like basal till, a type rare to the country, occurs in the district of Haukipudas on the coast of Northern Ostrobothnia. The cause of cementation is not its age but rather the composition of the underlying
J. Nenonen, P. Johansson, E. Kontas, E. Korkiakoski, M. Kvist, S. Rossi   +5 more
doaj   +1 more source

Material Composition Gradient Controls the Autonomous Opening of Banksia Seed Pods in Fire‐Prone Habitats

Advanced Functional Materials, EarlyView.
The seed pod valves of Australian Banksia attenuata plants are not simply bi‐layers which bend when dry. These experiments and models reveal complex mechanics, which allow seed release only after several steps of seed pod opening. Stiffness gradients prevent delamination of the valves during loading, and a shape‐memory function protects the seeds ...
Friedrich Reppe, Lorenzo Guiducci, Rivka Elbaum, Peter Werner, John W. C. Dunlop, David J. Merritt, Peter Fratzl, Michaela Eder   +7 more
wiley   +1 more source

Wafer-scale epitaxial growth of single orientation WS2 monolayers on sapphire [PDF]

arXiv, 2020
Realization of wafer-scale single-crystal films of transition metal dichalcogenides (TMDs) such as tungsten sulfide requires epitaxial growth and coalescence of oriented domains to form a continuous monolayer. The domains must be oriented in the same crystallographic direction on the substrate to avoid the formation of metallic inversion domain ...
arxiv