Results 291 to 300 of about 1,808,636 (336)
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Nordic Pulp & Paper Research Journal, 2019
AbstractThis work conducted an investigation on the water retention value (WRV) of pulp fibers measured by the conventional centrifugation method (with a screen filter) and the maximum content of fiber bonding water (MCFBW) measured by a headspace gas chromatography (HS-GC), a method with no fine loss, developed recently. The results showed there is an
Ruo-Yun Wang +4 more
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AbstractThis work conducted an investigation on the water retention value (WRV) of pulp fibers measured by the conventional centrifugation method (with a screen filter) and the maximum content of fiber bonding water (MCFBW) measured by a headspace gas chromatography (HS-GC), a method with no fine loss, developed recently. The results showed there is an
Ruo-Yun Wang +4 more
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Carbohydrate Polymers, 2004
Abstract Three types of regenerated cellulosic fibres, normal lyocell (CLY1), crosslinked lyocell (CLY2 and CLY3), and micromodal (μCMD) were treated with five two-stage cycles comprised of wetting in water at 40 °C for 6 h, and drying at 105 °C for 6 h.
A. Kongdee +3 more
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Abstract Three types of regenerated cellulosic fibres, normal lyocell (CLY1), crosslinked lyocell (CLY2 and CLY3), and micromodal (μCMD) were treated with five two-stage cycles comprised of wetting in water at 40 °C for 6 h, and drying at 105 °C for 6 h.
A. Kongdee +3 more
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Nordic Pulp & Paper Research Journal, 2019
Abstract Cellulose fibers swell significantly in NaOH/urea solutions, and swelling increases with a decrease in temperature and an addition of urea. The combined effects of the factors of a pretreatment procedure (sodium hydroxide concentration, urea concentration, temperature, and time) and post-treatment conditions (medium, stirring ...
Yingju Miao +6 more
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Abstract Cellulose fibers swell significantly in NaOH/urea solutions, and swelling increases with a decrease in temperature and an addition of urea. The combined effects of the factors of a pretreatment procedure (sodium hydroxide concentration, urea concentration, temperature, and time) and post-treatment conditions (medium, stirring ...
Yingju Miao +6 more
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TAPPI Journal, 2018
Industrial papermaking is a high-speed process during which a suspension of cellulosic fibers is formed into a continuous web via dewatering followed by drying. Dewatering in the paper machine occurs mechanically in the forming and pressing sections; however, most of the remaining water, whose removal requires applying high temperatures, evaporates in ...
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Industrial papermaking is a high-speed process during which a suspension of cellulosic fibers is formed into a continuous web via dewatering followed by drying. Dewatering in the paper machine occurs mechanically in the forming and pressing sections; however, most of the remaining water, whose removal requires applying high temperatures, evaporates in ...
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Analytical Chemistry, 1996
Several properties of methanol−water mixtures (molar volume, molar refractivity, Debye−Huckel parameters, pH scale, HPLC-useful pH range, dissociation constants of acids) are studied. Some macroscopic properties are used to calculate the extent of the methanol−water interaction.
Elisabeth Bosch +3 more
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Several properties of methanol−water mixtures (molar volume, molar refractivity, Debye−Huckel parameters, pH scale, HPLC-useful pH range, dissociation constants of acids) are studied. Some macroscopic properties are used to calculate the extent of the methanol−water interaction.
Elisabeth Bosch +3 more
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Journal of Hydrology
Soil hydraulic properties, such as the soil–water retention curve (SWRC), play a crucial role in simulating water transport within the vadose zone. They can be directly measured in the laboratory or field, or indirectly predicted by using Pedotransfer Functions (PTFs).
Lin, Lin +4 more
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Soil hydraulic properties, such as the soil–water retention curve (SWRC), play a crucial role in simulating water transport within the vadose zone. They can be directly measured in the laboratory or field, or indirectly predicted by using Pedotransfer Functions (PTFs).
Lin, Lin +4 more
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1990
The recent changes on Brazilian specifications for Portland cement, in order to permit limestone additions, led to the necessity of knowing its influence in several aspects of the cement behavior when applied in civil construction. In this paper the rheological properties, basically yield point and plastic viscosity, are determined in ...
CS Neto, VC Campiteli
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The recent changes on Brazilian specifications for Portland cement, in order to permit limestone additions, led to the necessity of knowing its influence in several aspects of the cement behavior when applied in civil construction. In this paper the rheological properties, basically yield point and plastic viscosity, are determined in ...
CS Neto, VC Campiteli
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Relationship between water retention capacity and pore-size distribution of compacted loess
Journal of Soils and Sediments, 2022Tao Xiao +4 more
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Journal of chromatography. A, 2003
Linear relationships between sspKa values in acetonitrile-water mixtures and wwpKa values in pure water have been established for five families of compounds: aliphatic carboxylic acids, aromatic carboxylic acids, phenols, amines, and pyridines. The parameters (slope and intercept) of the linear correlations have been related with acetonitrile-water ...
Sonia, Espinosa +2 more
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Linear relationships between sspKa values in acetonitrile-water mixtures and wwpKa values in pure water have been established for five families of compounds: aliphatic carboxylic acids, aromatic carboxylic acids, phenols, amines, and pyridines. The parameters (slope and intercept) of the linear correlations have been related with acetonitrile-water ...
Sonia, Espinosa +2 more
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