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Biomedical subjects

G H He

Publications and source records attributed to G H He.

5 recordsLinked to original sources
PubMed2001

Separation and preconcentration of MnVII/MnII speciation on crosslinked chitosan and determination by flame atomic absorption spectrometry.

A novel method for the separation and preconcentration of MnVII/MnII with crosslinked chitosan (CCTS) and determination by flame atomic absorption spectrometry (FAAS) has been developed. The adsorption rate of CCTS for MnVII was 98% at pH 3, while MnII was not adsorbed. MnVII was eluted from the CCTS with 10% (m/v) oxammonium hydrochloride and determined by FAAS. MnII was determined from the total manganese present after MnII in the water samples was transformed into MnVII. The detection limit (3 sigma, n = 10) for MnVII was 1.98 micrograms l-1 and the relative standard deviation less than 6.6% at the 10 micrograms l-1 level. The method was applied to environmental water samples with recoveries of between 95-103%.

Journal Article↗
PubMed2000

[AFLP markers of restoring genes of the wild-abortive hybrid rice].

Fertile and sterile pools were set up by bulked segregant analysis (BSA) based on the selection for the highly fertile and highly sterile plants of Shanyou 63 F2 population. The AFLP analysis of the two pools indicated that 64 primer combinations amplified 3,477 stable and clear bands. Exception of the combination E-AGC/M-CAA, all primer combinations had not detected polymorphism between the two pools. It was proved by investigation of two parents, individuals of F2 segregant population, backbone sterile lines and restorer lines that the polymorphic fragment AP1 generated from the primer E-AGC/M-CAA was associated with the restoring gene. AP1 was a single copy detected by Southern blot hybridization. The distance between AP1 and the restoring gene was 4.76 cM.

Genes, Plant↗