Results 61 to 70 of about 381,696 (284)

Silicate determination in sea water: toward a reagentless electrochemical method [PDF]

open access: yes, 2007
ilicate has been determined in sea water by four different electrochemical methods based on the detection of the silicomolybdic complex formed in acidic media by the reaction between silicate and molybdenum salts.
Comtat, Maurice   +7 more
core   +1 more source

A hierarchical adaptive strategy for selecting rheological models in intelligent backfill mining pipeline transportation systems

open access: yesDeep Underground Science and Engineering, EarlyView.
This graphical abstract presents a hierarchical adaptive strategy for selecting rheological models in intelligent backfill pipeline transportation. Temperature, fly ash content, and water‐cement ratio jointly influence slurry rheological nonlinearity, which is quantified using the Model Fidelity Gain (ΔR2).
Defeng Wang   +3 more
wiley   +1 more source

The Impact of Silicate Grain Coagulation on Millimeter Emission from Massive Protostellar Disks

open access: yesThe Astrophysical Journal
Hot accretion disks around massive protostars provide a unique opportunity to study ice-free silicate grains that cannot be investigated in protoplanetary disks.
Ryota Yamamuro   +2 more
doaj   +1 more source

Migration of Silicate Liquid Out of Grain Boundaries in Ceramics

open access: yesMicroscopy and Microanalysis, 1999
Abstract Liquid-Phase Sintering (LPS) is a conventional fabrication route for the densification of alumina and other ceramics. The polycrystalline ceramics processed by LPS contain siliceous phases along the grain boundaries. This wetting of the grain boundaries has a strong dependence on the crystallography of the boundary.
N Ravishankar, C Barry Carter
openaire   +1 more source

Processing of silicate dust grains in Herbig Ae/Be systems [PDF]

open access: yesAstronomy & Astrophysics, 2001
We have analysed the 10 m spectral region of a sample of Herbig Ae/Be (HAEBE) stars. The spectra are dominated by a broad emission feature caused by warm amorphous silicates, and by polycyclic aromatic hydrocarbons. In HD 163296 we nd aliphatic carbonaceous dust, the rst detection of this material in a HAEBE star.
Bouwman, J.   +5 more
openaire   +3 more sources

m spectra of globular cluster red giants: circumstellar silicate dust grains in 47 Tucanae (NGC 104)

open access: yes, 2006
We present 8–13 μm spectra of eight red giants in the globular cluster 47 Tucanae (NGC 104), obtained at the European Southern Observatory 3.6 m telescope. These are the first mid-infrared spectra of metal-poor, low-mass stars.
R. D. Gehrz   +7 more
core   +1 more source

A Perspective on Five‐Generation High‐Energy‐Density LiFePO4 Cathodes and Beyond: From Materials to Manufacturing

open access: yesEcoEnergy, EarlyView.
This perspective examines the evolution toward fifth‐generation LiFePO4. Practical volumetric energy density depends on preserving ionic transport, electronic connectivity, mechanical integrity, and active‐material utilization across powder design and manufacturing.
Xia Huang   +7 more
wiley   +1 more source

Ferromagnetic inclusions in silicate thin films: insights into the magnetic properties of cosmic grains

open access: yes, 2007
Context.We recently reported the formation of metallic inclusions in an amorphous and/or crystalline silicate matrix by thermal annealing of thin films in reducing atmospheres.
P. Rochette   +15 more
core   +1 more source

A Processing‐Oriented Perspective on Advanced Anode Materials: From Graphite to Si‐Based Systems

open access: yesEcoEnergy, EarlyView.
This review provides a processing‐oriented framework for graphite and Si‐based anodes, linking material‐specific fabrication routes with manufacturability, scalability, cost, and industrial feasibility. This transition from established graphite processing to emerging Si‐based manufacturing strategies highlights practical pathways toward next‐generation
Seh‐Yoon Lim   +3 more
wiley   +1 more source

Isotope Systematics of Presolar Silicate Grains: New Insights from Magnesium and Silicon

open access: yes, 2021
We report on Mg and Si isotope data of 86 presolar silicate grains identified through NanoSIMS oxygen ion imaging in thin sections of carbonaceous and ordinary chondrites. The O, Mg, and Si isotope data of 106 presolar silicates (including grains studied
Kodolányi, J.   +7 more
core   +1 more source

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