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Article
Tetrahedrally coordinated carbonates in Earth’s lower mantle
Carbonates are the main species that bring carbon deep into our planet through subduction. They are an important rock-forming mineral group, fundamentally distinct from silicates in the Earth’s crust in that c...
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Article
Open AccessThe refractive index and electronic gap of water and ice increase with increasing pressure
Determining the electronic and dielectric properties of water at high pressure and temperature is an essential prerequisite to understand the physical and chemical properties of aqueous environments under supe...
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Article
Spinnability in pre-gelled gel spinning of polyacrylonitrile precursor fibers
The spinnability in pre-gelled gel spinning of polyacrylonitrile (PAN) precursor fibers was investigated. The spinning solutions were aged at 25 °C for different times prior to fiber spinning. The pre-gelled s...
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Article
Modification of polyacrylonitrile precursor fiber with hydrogen peroxide
Polyacrylonitrile (PAN) precursor fibers were modified for different periods of time using hydrogen peroxide aqueous solution. A variety of tests were employed to characterize the fibers. The modification coul...
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Article
Formaldehyde removal by Rayon-based activated carbon fibers modified by P-aminobenzoic acid
We impregnated Rayon-based activated carbon fibers (ACFs) by p-aminobenzoic acid (PABA) and systematically investigated their porous structure, surface chemistry, and formaldehyde removal behavior. Using standard...
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Article
Rheological study on thermal-induced gelation behavior of polyacrylonitrile solution
Thermal-induced gelation process of different polyacrylonitrile (PAN) solutions was investigated through dynamic rheological measurements. The rheological material parameters characterizing the gelation behavi...
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Article
Homogeneity of the PAN/DMSO/H2O spinning solutions
The homogeneity of PAN/DMSO/H2O spinning dopes with conventional PAN molecular weight and comparative high PAN concentration have been investigated using rheology method. The rheological results show that G′ and ...
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Article
The structural transitions of rayon under the promotion of a phosphate in the preparation of ACF
The molecular and physical structures of cellulosic rayon fiber during the stepwise heat treatment for the fabrication of activated carbon fiber (ACF) were researched by Fourier transform infrared spectroscopy...
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Chapter and Conference Paper
Modeling and Mining the Rule Evolution
Temporal data mining attempts to provide accurate information about an evolving business domain. A framework is proposed to discover continuously temporal knowledge based on a session model. The main concepts ...
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Article
Choosing the Impregnants by Thermogravimetric Analysis for Preparing Rayon-Based Carbon Fibers
The pyrolytic process in preparing rayon into activated carbon fiber was studied by thermogravimetric analyses (TGA) and differential thermal gravimetry (DTG). For the promotion of the pyrolytic reaction and i...
