72 research outputs found
Precision Measurement of the Proton Flux in Primary Cosmic Rays from Rigidity 1 GV to 1.8 TV with the Alpha Magnetic Spectrometer on the International Space Station
A precise measurement of the proton flux in primary cosmic rays with rigidity (momentum/charge) from 1 GV to 1.8 TV is presented based on 300 million events. Knowledge of the rigidity dependence of the proton flux is important in understanding the origin, acceleration, and propagation of cosmic rays. We present the detailed variation with rigidity of the flux spectral index for the first time. The spectral index progressively hardens at high rigidities.</p
Viscosity and structure evolution of the SiO2-MgO-FeO-CaO-Al2O3 slag in ferronickel smelting process from laterite
The SiO2 fractions in laterite-nickel ores are quite high, thus certain
amount of lime should be used as fluxing material to achieve good fluidity
and desulfurization capacity in industrial smelting process. However, this
operation leads to an additional cost of lime. In addition, the increase of
slag volume decreases the effective furnace volume. To avoid such problem,
partial reduction of FeO has been suggested. Therefore, the high SiO2, low
MgO and FeO and very little CaO slag is formed, which was less studied in the
previous literature. Therefore, the viscosity and slag structure are
investigated in the present study through FT-IR and Raman analysis methods.
Experimental results show that the slag is a mixture of liquid and solid
phases under the experimental temperature. The FT-IR and Raman spectra show
that the fractions of the complex polymerization structure decrease
significantly with the increase of FeO content and slag basicity, resulting
in the decrease of apparent viscosity
Influence of surrounded metallic layers on whispering-gallery modes in circular microresonators
Research and analysis on the development status and prospect of green building materials and green buildings in the new century
A high accurate automated firstâbreak picking method for seismic records from highâdensity acquisition in areas with a complex surface
Preparation of ferronickel from nickel laterite via coal-based reduction followed by magnetic separation
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