Results 21 to 30 of about 68,782 (195)

Metal Injection Molding (MIM) of NdFeB Magnets

open access: yesEPJ Web of Conferences, 2014
Due to the increased and unstable prices for Rare Earth elements there are activities to develop alternative hard magnetic materials. Reducing the amount of material necessary to produce complex sintered NdFeB magnets can also help to reduce some of the ...
Hartwig T.   +3 more
doaj   +1 more source

Felsic Melt and Gas Mobilization During Magma Solidification: An Experimental Study at 1.1 kbar

open access: yesFrontiers in Earth Science, 2020
Melt and gas transfer processes are essential to the formation and growth of the Earth’s crust and for sustaining volcanic activity. These processes also play a major role in magma fractionation at shallow depths (<10 km) where magmas stall ...
Mattia Pistone   +9 more
doaj   +1 more source

Time Variation in the Chemical and Isotopic Composition of Fumarolic Gasses at Kusatsu-Shirane Volcano, Japan

open access: yesFrontiers in Earth Science, 2019
Minor seismicity may occur at volcanoes with hydrothermal system before a steam eruption. To forecast any steam eruption, it is indispensable to detect and understand the nature of this shallow seismicity. As the fumarolic gas resides in the hydrothermal
Takeshi Ohba   +6 more
doaj   +1 more source

Disequilibrium Rheology and Crystallization Kinetics of Basalts and Implications for the Phlegrean Volcanic District

open access: yesFrontiers in Earth Science, 2020
Large volcanic eruptions are frequently triggered by the intrusion of hot primitive magma into a more evolved magma-chamber or -mush zone. During intrusion into the cooler mush zone, the basaltic magma undergoes crystallization, which in turn can release
Stephan Kolzenburg   +5 more
doaj   +1 more source

A History of Andesite Production via Magma Mixing and Mingling Revealed Microscopically at Ngauruhoe Volcano

open access: yesGeochemistry, Geophysics, Geosystems, 2022
Many andesites erupted at arc volcanoes are the products of magma mixing, and this process could be important in triggering their eruption. Throughout the life of Ngauruhoe volcano (∼2.5 ka), erupted andesites lack macroscopic enclaves or lithological ...
Kate Cocker   +4 more
doaj   +1 more source

Turn up the Heat! A Tutorial for the MAGMA R-package.

open access: yes, 2023
The MAGMA-package offers nearest neighbor matching for two to four groups. It also includes the option to match data of a 2x2 Design. In addition, MAGMA includes a framework for evaluating the post-matching balance.
Vsevolod Scherrer   +4 more
core   +1 more source

On the Theory of Left/Right Almost Groups and Hypergroups with their Relevant Enumerations

open access: yesMathematics, 2021
This paper presents the study of algebraic structures equipped with the inverted associativity axiom. Initially, the definition of the left and the right almost-groups is introduced and afterwards, the study is focused on the more general structures ...
Christos G. Massouros, Naveed Yaqoob
doaj   +1 more source

Magmatic Densities Control Erupted Volumes in Icelandic Volcanic Systems

open access: yesFrontiers in Earth Science, 2018
Magmatic density and viscosity exert fundamental controls on the eruptibility of magmas. In this study, we investigate the extent to which magmatic physical properties control the eruptibility of magmas from Iceland's Northern Volcanic Zone (NVZ).
Margaret Hartley   +2 more
doaj   +1 more source

The First 10 Million Years of Rear‐Arc Magmas Following Backarc Basin Formation Behind the Izu Arc

open access: yesGeochemistry, Geophysics, Geosystems, 2020
IODP Site U1437 is located in the Izu rear‐arc region, approximately 330 km west of the Izu‐Bonin trench axis. The oldest four units (Units IV through Unit VII) include volcaniclastic sediment and in situ hyaloclastites.
T. Miyazaki   +10 more
doaj   +1 more source

State Machines and Hypergroups

open access: yesMathematics, 2022
State machines are a type of mathematical modeling tool that is commonly used to investigate how a system interacts with its surroundings. The system is thought to be made up of discrete states that change in response to external inputs.
Gerasimos G. Massouros   +1 more
doaj   +1 more source

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