Results 11 to 20 of about 6,179,886 (326)
Using hydrocyclone fractionation to improve chemical pulp quality
South African Journal of Chemical Engineering, 2021 Production of chemical pulp is accompanied by various impurities in addition to the cellulose fibres produced. The impurities are mainly due to lignin fragments and wood resin components in the wood.
Marvin Potgieter +3 more
doaj +1 more source
THE CHEMICAL FRACTIONATION OF LYMPHATIC ORGANS [PDF]
The Journal of Cell Biology, 1956 A method for chemically fractionating lymphatic organs has been described. The method has been shown to be applicable to bovine palatine tonsils, sheep palatine tonsils, and bovine thymus. Approximately 50 per cent of the dry weight of tonsils and about 30 per cent of thymus has been found to be soluble in the 0.15 M NaCl extract.
E L, HESS, S E, LAGG
openaire +2 more sources
Main Group Metal Chemistry, 2020 In current study, the effect of various organic substances as bulking agents (BAs) including wheat straw, pistachio hull wastes, and tree leaves at different levels (10, 25, 45% v/v) were investigated on total concentration and chemical forms of Cu, Pb ...
Saffari Mahboub +3 more
doaj +1 more source
Response of tungsten (W) solubility and chemical fractionation to changes in soil pH and soil aging.
Science of the Total Environment, 2020 A thorough understanding of the geochemical behavior of W in soils is crucial for environmental risk assessment. Soil pH is known as master variable of element solubility and bioavailability in soils.
E. Oburger +4 more
semanticscholar +1 more source
Revista Ambiente & Água, 2022 This study quantified the C content of the chemical and physical fractions of SOM in different management systems in an Argisoil of sandy texture. The study was carried out in a reference area of Native Forest (NF), and in three managed areas: Permanent ...
Giovana Tetsuya Lopes +7 more
doaj +1 more source
Energies, 2021 Sewage sludge is regarded as a potential source for soil fertilizer However, the direct utilization of sewage sludge in agricultural land is restricted since it also contains heavy metals, pathogens, and toxic compounds.
Naeimeh Vali +4 more
doaj +1 more source
Monitoring and Evaluation of Terni (Central Italy) Air Quality through Spatially Resolved Analyses
Atmosphere, 2017 A study of spatial variability of PM10 elemental components was conducted in Terni city (Central Italy), situated in an intramountain depression characterized by the presence of several particulate matter emission sources.
Lorenzo Massimi +6 more
doaj +3 more sources
Nitrogen Fractionation in External Galaxies [PDF]
, 2019 In star forming regions in our own Galaxy, the 14N/15N ratio is found to vary from $\sim$ 100 in meteorites, comets and protoplanetary disks up to $\sim$ 1000 in pre-stellar and star forming cores, while in external galaxies the very few single-dish ...
Fontani, Francesco +3 more
core +3 more sources
, 2020 Operationally defined chemical fractionation of Al, Ba, Ca, Cu, Fe, Mg, Mn, Ni, Sr and Zn in infusions of loose leaf and bagged black and green teas was carried out.
P. Pohl +2 more
semanticscholar +1 more source
Thermal-chemical Fractionation of Lignocellulosic Biomass
EUBCE 2019 Conference Proceedings, 2019 Biomass is a valuable, sustainable feedstock for the production of chemicals and materials, and will play an important role in the transition towards a Sustainable Process Industry. Bio-based products – products wholly or partly derived from materials of biological origin – can make the society more sustainable and lower its dependence on fossil fuels.
Heeres, Hans +3 more
openaire +2 more sources