Results 1 to 10 of about 240,547 (357)

Iron is an important influence of volcanic ash input on the evolution of deep-sea ecosystems [PDF]

open access: yesMicrobiology Spectrum
Volcanoes, originating from deep-seated magmatic activity, serve as crucial conduits connecting Earth’s interior and surface. Volcanic eruptions, a primary manifestation of this connection, exert profound influence across Earth’s surface systems ...
Shijie Bai   +5 more
doaj   +2 more sources

Chemical and Biological Weapons in Regional Disarmament in the Middle East and North Africa

open access: yesJournal for Peace and Nuclear Disarmament, 2022
In November 2019, a new series of annual one-week meetings began to eliminate non-conventional arms – essentially nuclear weapons, and to a lesser extent chemical and biological weapons (CBW) – from the arsenals in the Middle East.
Jean Pascal Zanders
doaj   +1 more source

A new type of gold mineralization in the basement of the Aldan-Stanovoi gold-bearing province

open access: yesРуды и металлы, 2022
A new type of gold mineralization has been revealed in rocks of the basement of the Aldan-Stanovoi gold-bearing province, within the Spokoininsky ore cluster of the Tyrkandinsky gold-bearing region of southern Yakutia. A geological model has been created
Evgenii P. Sokolov   +7 more
doaj   +1 more source

Reduction of Train-Induced Vibrations—Calculations of Different Railway Lines and Mitigation Measures in the Transmission Path

open access: yesApplied Sciences, 2023
The reduction of train-induced ground vibrations by different railway lines and by mitigation measures in the propagation path is analysed in a unified approach by two-dimensional finite element calculations where the reduction is expressed as the ...
Lutz Auersch
doaj   +1 more source

Comparing the Dynamics of Free Subduction in Cartesian and Spherical Domains

open access: yesGeochemistry, Geophysics, Geosystems, 2022
The effects of sphericity are regularly neglected in numerical and laboratory studies that examine the factors controlling subduction dynamics. Most existing studies have been executed in a Cartesian domain, with the small number of simulations ...
Fangqin Chen   +4 more
doaj   +1 more source

Trench FinFET Nanostructure with Advanced Ferroelectric Nanomaterial HfZrO2 for Sub-60-mV/Decade Subthreshold Slope for Low Power Application

open access: yesNanomaterials, 2022
Ferroelectric fin field-effect transistors with a trench structure (trench Fe-FinFETs) were fabricated and characterized. The inclusion of the trench structures improved the electrical characteristics of the Fe-FinFETs.
Siao-Cheng Yan   +5 more
doaj   +1 more source

PLC-Based Integrated Refractive Index Sensor Probe with Partially Exposed Waveguide

open access: yesSensors, 2022
This paper proposes a simple, high-efficiency refractive index (RI) sensor, with a structure based on the planar lightwave circuit (PLC) probe type. The optical sensor has a 1 × 2 splitter structure with reference and sensing channels, each consisting of
Jin Hwa Ryu   +7 more
doaj   +1 more source

High-Q-factor Al [subscript 2]O[subscript 3] micro-trench cavities integrated with silicon nitride waveguides on silicon [PDF]

open access: yes, 2020
We report on the design and performance of high-Q integrated optical micro-trench cavities on silicon. The microcavities are co-integrated with silicon nitride bus waveguides and fabricated using wafer-scale silicon-photonics-compatible processing steps.
Adam, Thomas N.   +8 more
core   +1 more source

Analysis on non-tectonic origin of linear scarps in alluvial-proluvial fan of the west bank of Xidong in Hexi Corridor

open access: yes地震科学进展, 2023
The formation and discovery of linear scarps in alluvial-proluvial fan are affected by many factors, such as structure, erosion and human activities.
Rongying Zheng   +3 more
doaj   +1 more source

The Efficiency of the Benefits of Tire-Derived Aggregate Backfill for Buried Concrete Pipes Beneath Paved and Unpaved Roads

open access: yesInfrastructures, 2023
Tire-derived aggregate (TDA) has been proposed in recent studies to be considered as part of backfill soil to reduce stress and strain developed in buried pipes.
Saif Alzabeebee   +3 more
doaj   +1 more source

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