Biomedical subjects

Jiang Shi

Publications and source records attributed to Jiang Shi.

3 recordsLinked to original sources

PubMed2005

[Population fluctuation of main pathogens and their antagonistic bacteria in cucumber rhizosphere].

The investigation on the population fluctuation of main pathogens Pythium spp. and Fusarium oxysporum f. cucumerinum in the rhizosphere of four cucumber varieties showed that there was a significant difference in population number of pathogens for different cucumber varieties and for different growth stages of the same variety, which was in accordance with the regular disease incidence pattern. The population number of Pythium spp. was significantly higher at cucumber creeping stage than at its other growth stages, while that of Fusarium oxysporum f. sp. cucumerinum was the highest at cucumber principal-fruiting stage. There was a closer positive relationship between two test pathogens and their antagonistic bacteria, with the correlation coefficient being 0.95 and 0.81, respectively.

Antibiosis↗

PubMed2005

[Labeling of biocontrol agents ZJY-1 and ZJY-116 gfp gene and its ecological adaptability in cucumber rhizosphere].

The recombined plasmid pRP22-GFP contained with gfp gene and chloramphenicol resistant was successfully introduced into two biocontrol agents Brevibacillus brevis ZJY-1 and Bacillus subtilis ZJY-116. After seed inoculation, the survival and colonization of the two strains were studied by periodically retrieving the GFP-tagged strains in the cucumber rhizosphere based on the selective markers. The results showed that both the strains could successfully colonize in the rhizosphere during the whole life of cucumber, and a higher colonization level was observed during anthesis and fruition stages. In pot trials, they could migrate to the nearby non-inoculated spontaneous weed plants, and reestablish in the rhizosphere of plants subsequently grown in the same pot.

Adaptation, Physiological↗

PubMed2002

[An assistant artificial hip joint].

The assistant artificial hip joint (AAHJ) is a new impermanent hip support implanted in the body. It is used for treatment of ischemic necrosis of the femoral head at the early stage. It reserves the natural femoral head, increases its containment and decreases its load, thus makes the recovery of the necrosed femoral head. The AAHJ's moving axis center is the same as that of the femoral head. Therefore, the moving range of the hip joint is very close to the normal postoperatively. The patient can walk with loading in 3 weeks after the surgical operation, and can regain his (or her) daily work and life in 2 to 3 months of the operation. The AAHJ's structure is simple and the price is cheap.

Arthroplasty, Replacement, Hip↗