Results 51 to 60 of about 268,148 (308)

A Biologically‐Architected Wear and Damage‐Resistant Nanoparticle Coating From the Radular Teeth of Cryptochiton stelleri

Advanced Functional Materials, EarlyView.
The ultrahard teeth of mollusks that feed on rocky substrates contain a wear‐resistant coating on their surfaces consisting of densely packed mesocrystalline magnetic nanoparticles within an organic matrix. These coatings display significant hardness and toughness through their highly controlled mesocrystalline architectures.
Taifeng Wang, Yu Chen, Ezra Sarmiento, Taige Hao, Atsushi Arakaki, Michiko Nemoto, Pablo Zavattieri, David Kisailus   +7 more
wiley   +1 more source

Identification of landslide vulnerable zones in West Khasi District of Meghalaya [PDF]

E3S Web of Conferences
A landslide is a mass of rock, debris, or earth moving down a slope. Landslides are a form of mass waste under the direct influence of gravity, indicating any down-slope movement of rock and soil.
Bose Mahalingam, Indraddin, De Trisha, Channabasappa K.   +3 more
doaj   +1 more source

Micromachined Double‐Membrane Mechanically Tunable Metamaterial for Thermal Infrared Filtering

Advanced Photonics Research, Volume 6, Issue 5, May 2025.
Herein, a mechanically tunable double‐layer plasmonic metamaterial leveraging the extraordinary optical transmission effect observed in subwavelength arrays of openings within thin metal layers is presented. The concept is experimentally validated by integrating the proposed metamaterial structure into an electrostatic parallel‐plate actuator to create
Oleg Bannik, Fedor Kovalev, Mingkai Liu, Michal Zawierta, Dilusha Silva, Lorenzo Faraone, Mariusz Martyniuk, Ilya Shadrivov   +7 more
wiley   +1 more source

Occurrence of Ionospheric Equatorial Ionization Anomaly at 840 km Height Observed by the DMSP Satellites at Solar Maximum Dusk

Space Weather, 2021
Although it is accepted that the electron density double peaks of the Equatorial Ionization Anomaly (EIA) generally merge into a single‐peak with increasing altitude and thus the signature of EIA becomes inconspicuous in the higher topside ionosphere, it
Jiacheng Li, Yiding Chen, Libo Liu, Huijun Le, Ruilong Zhang, He Huang, Wenbo Li   +6 more
doaj   +1 more source

A New Method for Retrieving Electron Density Profiles from the MARSIS Ionograms

Remote Sensing, 2022
The Martian ionosphere was actively detected by Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) aboard the Mars Express. The detected echo signal of the MARSIS at an epoch is presented as a function of frequency and time delay to form
Wendong Liu, Libo Liu, Yiding Chen, Huijun Le, Ruilong Zhang, Wenbo Li, Jiacheng Li, Tongtong Zhang, Yuyan Yang, Han Ma   +9 more
doaj   +1 more source

Carbonate alteration of ophiolitic rocks in the Arabian–Nubian Shield of Egypt: sources and compositions of the carbonating fluid and implications for the formation of Au deposits [PDF]

, 2016
Ultramafic portions of ophiolitic fragments in the Arabian–Nubian Shield (ANS) show pervasive carbonate alteration forming various degrees of carbonated serpentinites and listvenitic rocks.
Azer, Mokhles K., Boskabadi, Arman, Boyce, Adrian, Broman, Curt, Cooper, Matthew J., Majka, Jaroslaw, Mohamed, Fathy H., Pitcairn, Iain K., Stern, Robert J., Teagle, Damon A.H.   +9 more
core   +2 more sources

Long‐Term Active Rather than Passive Restoration Promotes Soil Organic Carbon Accumulation by Alleviating Microbial Nitrogen Limitation in an Extremely Degraded Alpine Grassland

Advanced Science, EarlyView.
Active restoration increases soil organic carbon stocks by reducing microbial nitrogen limitation. Nitrogen availability promotes particulate to mineral‐associated organic carbon conversion by reducing microbial carbon use efficiency. Passive restoration has no effect on soil organic carbon stocks.
Jinchao Gong, Feida Sun, Jingjing Wu, Shijie Zhou, Yue Xiu, Linlin Li, Tahmina Kausar, Zhouwen Ma, Jiqiong Zhou, Lin Liu, Yongxing Cui, Jordi Sardans, Josep Peñuelas, Ahmed Elrys, Ji Chen, Yanfu Bai   +15 more
wiley   +1 more source

Perspectives on Earth, life, and planetary futures: scientific literacy among Spanish future teachers

Humanities & Social Sciences Communications
This study examines the knowledge and perceptions of preservice teachers in Spain, regarding fundamental topics on Earth Sciences. The research, exploratory and descriptive, was carried out applying a questionnaire to 355 preservice teachers including ...
Irene Prieto, Beatriz García Fernández, Jesús Marugán-Lobón   +2 more
doaj   +1 more source

THE ROLE OF GEOLOGY IN ENVIRONMENTAL ENGINEERING

Journal of Chemists, Technologists and Environmentalists
Environmental engineering is an interdisciplinary science that relies on the knowledge of a number of other "basic" sciences - chemistry, mathematics, physics, biology and geology.
Dragana Dogančić, Anita Ptiček Siročić   +1 more
doaj   +1 more source

Some scientific investigations affecting Queensland [PDF]

, 1939
The University of Queensland Department of Geology Papers was primarily a medium for publication of original research work conducted by staff members and postgraduate students of the Department of Geology and Mineralogy at UQ.
Richards, H. C. (Henry Caselli), 1884-1947
core