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Effect of scarification, GA and chilling on the germination of goldenrain-tree (Koelreuteria paniculata Laxm.) seeds
Results show that K. paniculata seeds exhibit both exogenous and endogenous dormancy, and a combination of GA and chilling (GA-chilling) helped to alleviate seed dormancy in a relatively short period of time.
Graft polymerization of acrylic acid onto corn starch in aqueous isopropanol solution
The graft polymerization of acrylic acid (AA) onto corn starch well-swollen in aqueous isopropanol (IPA) was carried out by controlling reaction variables such as the concentrations of AA, initiator…
Preparation and uranyl ion adsorptivity of macroreticular chelating resins containing a pair of neighboring amidoxime groups in a monomeric styrene unit
A cyanomethylated styrene-divinylbenzene copolymer was prepared by the reaction of a chloromethylated styrene-divinylbenzene copolymer with sodium cyanide. A polystyrene-based macroreticular resin…
Analysis on the Flora and Vegetation for Ecological Restoration of Local Streams -In case of local streams in Namwon-
The species showing the higer value in the plant communities were Persicaria thunbergii, Phragmites japonica, Artemisia princeps, Humulus scandens, Bidens frondosa, Oenanthe javanica, Agropyron tsukusinense var.
Effect of Pre-Treatments on Dormancy of Goldenrain-Tree (Koelreuteria paniculata Laxm.) Seeds
Results indicated that K. paniculata seeds had both exogenous and endogenous dormancy and identified some treatments that released the dormancy, except dry chilled seeds that were slow to germination despite their higher germination.
A convenient halogenation of α, β-unsaturated carbonyl compounds with OXONE® and hydrohalic acid (HBr, HCl)
Mixtures of OXONE® and hydrobromic acid or hydro-chloric acid afford solutions of bromine or chlorine, respectively. α-Bromo- or a-chloro-α,β-unsaturated carbonyl compounds were prepared by addition…
Isothermal Vapor−Liquid Equilibrium at 333.15 K, Density, and Refractive Index at 298.15 K for the Ternary Mixture of Dibutyl Ether + Ethanol + Benzene and Binary Subsystems
Isothermal vapor−liquid equilibrium (VLE) data at 333.15 K are reported for the binary systems of di-n-butyl ether (DBE) + ethanol, ethanol + benzene, DBE + benzene, and the ternary system of DBE +…
A nonionic hydrogel from the telechelics by utilizing living polymerization of 2‐oxazolines
N,N′-dimethyl-2,2′-tetramethylene-bis(2-oxazolinium) bis(methyl-p-toluene sulfonate) (II), a cationic polymerization initiator, was synthesized by the reaction of methyl p-toluene sulfonate with…
Thermal stability of blends of poly(vinyl chloride) with polyester elastomer
The thermal stability of poly(vinyl chloride) (PVC) under air atmosphere was improved by blending with PETE (polyester elastomer). Its enhanced stability could be explained by a reaction between the…
Synthesis and heavy metal ion adsorptivity of macroreticular chelating resins containing phosphono and carboxylic acid groups
Macroreticular copolymer beads were prepared by suspension polymerization of 4-vinylbenzyl chloride (VBC), divinylbenzene (DVB) and monomers with carboxylic ester groups like dibutyl maleate (DBM),…