Results 71 to 80 of about 32,962 (258)

Novel composite in situ obtained from coal gasification coarse slag and its mechanism of removing phosphate

open access: yesArabian Journal of Chemistry, 2023
A novel low-cost hematite–silicon mesoporous composite (HSMC) was synthesized in situ from coal gasification coarse slag (CGCS) via acid modification and its potential for phosphate removal from wastewater was studied.
Baoguo Yang   +6 more
doaj  

An overview of the results of dissertation research in the field of nanotechnology and nanomaterials. Part 2 [PDF]

open access: yesНанотехнологии в строительстве, 2015
To popularize scientific achievements the main results of Russian and foreign scientists’ research are published in the form of abstract. The research «Aerated concrete of autoclave hardening with the use of nanostructured modifier» has the following ...
KARPOV Alexey Ivanovich
doaj   +1 more source

Meridional circulation in turbulent protoplanetary disks [PDF]

open access: yes, 2011
Based on the viscous disk theory, a number of recent studies have suggested there is large scale meridional circulation in protoplanetary disks. Such a flow could account for the presence of crystalline silicates, including calcium- and aluminum-rich inclusions (CAIs), at large distances from the sun.
arxiv   +1 more source

Understanding the biochar's role in ameliorating soil acidity

open access: yesJournal of Integrative Agriculture, 2019
Extensive acidic soils, which suffer from accelerated soil acidification, are found in southern China. Soil acidity, aluminum toxicity, and nutrient deficiencies severely limited crop productivity in acidic soils.
Ren-yong SHI   +3 more
doaj  

Evaluation of the Compatibility of Repair Materials for Concrete Structures

open access: yesInternational Journal of Concrete Structures and Materials, 2017
This study evaluates the compatibility of repair materials for concrete bridge decks. A new compatibility test set-up was designed and tested based on the concrete bridge deck cracking and delamination mechanism theory.
Giri Venkiteela   +3 more
doaj   +1 more source

In situ quasi-elastic neutron scattering study on the water dynamics and reaction mechanisms in alkali-activated slags [PDF]

open access: yes, 2019
In this study, in situ quasi-elastic neutron scattering (QENS) has been employed to probe the water dynamics and reaction mechanisms occurring during the formation of NaOH- and Na2SiO3-activated slags, an important class of low-CO2 cements, in conjunction with isothermal conduction calorimetry (ICC), Fourier transform infrared spectroscopy (FTIR ...
arxiv   +1 more source

Polymer Nanocomposites Using Zinc Aluminum and Magnesium Aluminum Oleate Layered Double Hydroxides: Effects of LDH Divalent Metals on Dispersion, Thermal, Mechanical and Fire Performance in Various Polymers [PDF]

open access: yes, 2009
Oleate-containing layered double hydroxides of zinc aluminum (ZnAl) and magnesium aluminum (MgAl) were used to prepare nanocomposites of polyethylene, poly(ethylene-co-butyl acrylate) and poly(methyl methacrylate).
Hossenlopp, Jeanne   +5 more
core   +1 more source

Tribocorrosion Properties of PEO Coatings Produced on AZ91 Magnesium Alloy with Silicate- or Phosphate-Based Electrolytes [PDF]

open access: yes, 2018
In this work, the tribocorrosion behavior of plasma electrolytic oxidation (PEO)-coated AZ91 samples was studied. In particular, two different coatings were produced and compared. One was obtained with an alkaline electrolyte containing sodium phosphate,
Brunelli, Katya   +7 more
core   +2 more sources

SEAWATER PURIFICATION FROM CESIUM AND STRONTIUM RADIONUCLIDES

open access: yesВодное хозяйство России: проблемы, технологии, управление, 2019
The article deals with the study of sorption (under batch conditions) of cesium and strontium radionuclides from sea water with ferrocyanidic sorbents based on hydrated titanium and zirconium dioxides (Т-35, NPF-HTD), glauconite and clinoptilolite ...
Anna V. Voronina   +4 more
doaj   +1 more source

Did a Complex Carbon Cycle Operate in the Inner Solar System?

open access: yesLife, 2020
Solids in the interstellar medium consist of an intimate mixture of silicate and carbonaceous grains. Because 99% of silicates in meteorites were reprocessed at high temperatures in the inner regions of the Solar Nebula, we propose that similar levels of
Joseph A. Nuth   +3 more
doaj   +1 more source

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