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18 results on '"Liu, Chen-Jing"'

12. Transdural circumferential decompression for thoracic spinal stenosis caused by beak-type ossification of the posterior longitudinal ligament: a technical note.

Author

Wang, Zhi-Chao, Li, Shu-Zhong, Qu, Xin-Fei, Sun, Yuan-Liang, Yin, Chu-Qiang, Wang, Yue-Lei, Wang, Jie, Liu, Chen-Jing, Cao, Zhen-Lu, and Wang, Ting

Subjects
LONGITUDINAL ligaments, SPINAL surgery, SPINAL stenosis, OSSIFICATION, THORACIC vertebrae, SURGICAL decompression
Abstract

Thoracic myelopathy caused by ossification of the posterior longitudinal ligament (OPLL) in the thoracic spine is usually progressive and responds poorly to conservative therapy, making surgery the only effective treatment option. A variety of surgical procedures have been developed to treat thoracic OPLL. However, the optimal surgical approach for removal of thoracic OPLL remains unclear. In the present study, we described a newly modified posterior approach for the removal of OPLL: circular decompression via dural approach, and complete removal of OPLL can be achieved under direct vision and without neurological deficit. Three patients with beak-type thoracic OPLL presented with progressive thoracic myelopathy and leg weakness. Magnetic resonance imaging showed the spinal cord severely compressed. The surgical management of the three patients involved the 'cave-in' circular decompression and transdural resection of OPLL. Transdural circumferential decompression was successfully performed in all three patients. Clinical outcome measures, including pre- and postoperative radiographic parameters, were assessed. All of the patients were followed up for an average of 12 months (ranging from 10 to 15 months), and no surgery-related complications occurred. Weakness relief and neural function recovery were satisfactorily achieved in all patients by the final follow-up. Transdural circumferential decompression was an effective method for thoracic spinal stenosis caused by concurrent beak-type OPLL, by which OPLL could be safely removed. It is especially useful when there is a severe adhesion between the dura OPLL. [ABSTRACT FROM AUTHOR]

Published
2023
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18. Improving vanadium extraction from stone coal via combination of blank roasting and bioleaching by ARTP-mutated Bacillus mucilaginosus.

Author

Dong Ying-Bo, Lin Hai, Liu Chen-Jing, Liu Yue, Dong Ying-Bo, Lin Hai, Liu Chen-Jing, and Liu Yue

Abstract

Stone coal from Yunxi (Hubei province, China) was crushed to particle sizes below 74 microns; the main component was SiO2 and the V2O5 content was 1.19%. The main mineral present was quartz, followed by muscovite. The atmospheric and room temperature plasma (ARTP) technique was used to generate B. mucilaginosus mutants. Results showed that a mutant B. mucilaginosus BM-50, after ARTP irradiation for 50 s, had the highest acid production. The total content of the organic acid produced was nearly doubled compared with the wild strain after 2 days. After 20 days, vanadium leaching rate with BM-50 reached 18.2%, which was better than that of the original bacteria (15.3%). A pretreatment via blank roasting for stone coal further improved the vanadium dissolution by bioleaching; 68.3% vanadium was extracted, which was much higher than that without blank roasting. It is concluded that bioleaching by bacterial mutants by ARTP irradiation combined with blank roasting has great potential for improving vanadium recovery from low-grade vanadium-bearing stone coal., Stone coal from Yunxi (Hubei province, China) was crushed to particle sizes below 74 microns; the main component was SiO2 and the V2O5 content was 1.19%. The main mineral present was quartz, followed by muscovite. The atmospheric and room temperature plasma (ARTP) technique was used to generate B. mucilaginosus mutants. Results showed that a mutant B. mucilaginosus BM-50, after ARTP irradiation for 50 s, had the highest acid production. The total content of the organic acid produced was nearly doubled compared with the wild strain after 2 days. After 20 days, vanadium leaching rate with BM-50 reached 18.2%, which was better than that of the original bacteria (15.3%). A pretreatment via blank roasting for stone coal further improved the vanadium dissolution by bioleaching; 68.3% vanadium was extracted, which was much higher than that without blank roasting. It is concluded that bioleaching by bacterial mutants by ARTP irradiation combined with blank roasting has great potential for improving vanadium recovery from low-grade vanadium-bearing stone coal.

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