Biomedical subjects

Han-dong Liu

Publications and source records attributed to Han-dong Liu.

3 recordsLinked to original sources

PubMed2005

[Application of keyhole approach in operation of intracranial aneurysms].

OBJECTIVE: To explore the operative technique and evaluate the effect of intracranial aneurysms via keyhole approach. METHODS: Fifty-six intracranial aneurysm patients, 23 with anterior communicating artery (AcomA) aneurysm, 29 with posterior communicating artery (PcomA) aneurysm, and 4 with internal carotid artery-posterior communicating artery aneurysm, totally with 58 lesions, were treated by microsurgery, via supraorbital keyhole approach in 22 cases, pterional approach in 18, and transorbital approach in 16. Adjuvant endoscopy was used in 33 patients. RESULTS: Fifty-eight lesions of aneurysm were clipped in all the patients and no one died. No approach-related severe complication occurred. Bilateral PcomA aneurysms in 2 cases were clipped via unilateral keyhole approach. CONCLUSION: It is workable to treat intracranial aneurysms via keyhole approach. Keyhole approach not only reduces the operation-related trauma and shorten the operation time, but also obtains ideal results.

Adult↗

PubMed2002

[Determination of available as (III) and as (V) in soils by flow injection hydride generation atomic fluorescence spectrometry].

A method for the determination of available As (III) and As (V) in soils by flow injection hydride generation atomic fluorescence spectrometry (FI-HG-AFS) was presented. As the concentration of As (III) in extract was determined by HG-AFS in the medium of 0.1 mol.L-1 citric acid solution and the total arsenic was determined after FI on-line reduction of As (V) by L-cysteine, the concentration of As (V) was calculated by the difference. The manifolds for FI on-line reduction of As (V) were designed. The chemical conditions and the operating parameters were optimized. The detection limits (3 sigma) of As (III) and As (V) are 0.11 and 0.07 ng.mL-1, respectively, and the relative standard deviation is 1.43 for 7 determinations of 10 ng.mL-1 As (III) solution. The developed method was applied to the determination of available As (III) and As (V) in real soils and the recovery was 82%-104%.

Arsenic↗

PubMed2002

[Rice breeding by space technology].

In order to inquire into the influences of space conditions on rice breeding,the dry seeds of 12 rice varieties were carried by recoverable satellite. After recovery,these seeds were showed in the yield, the inheritance and variation of the characters of their progenies were observed and analysed. The results showed that the characters of the progenies mutated under space conditions segregated and varied in many aspects and directions,and the segregated and varied characters were heritable. These progenies posoessed significant transgressive inheritance, a plenty of variation types and variation was characterized by short breeding period. The results in this study indicated that space technology breeding could be developed and used as a new method of mutation breeding.

English Abstract↗