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- 저자 : Jianlong Yin (검색결과 4 건)
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Jianlong Yin,Jing Yu,Cheng Lou,Dongsheng Li,Xiaoyan Shen,Ming Li 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.24 No.2
In an aerostatic restrictor, the presence of friction between the high-pressure air and the aerostatic restrictor wall can lead to non-uniform pressure and temperature distributions of the lubricating air film, which will affect the aerostatic restrictor performance. Therefore, explicating the pressure and temperature distributions of the lubricating air film could help to improve the characteristics and performance of the aerostatic restrictor. In this study, a theoretical model is established for the pressure and temperature distributions in the aerostatic restrictor with double U-shaped pressure-equalizing grooves, which is then compared with simulations, and finally verified by experiments. The results indicate the following. (1) The parameter distributions of the aerostatic restrictor’s air film are affected by the pressure-equalizing grooves and the orifice. (2) The air film parameter distributions are affected by the air source pressure and air film thickness. (3) The air film parameter distribution characteristics obtained from theoretical calculations, simulations, and experiments are consistent, indicating that the theoretical model is effective for studying the flow field of lubricating air film in the aerostatic restrictor. This model can also provide a theoretical basis for designing the orifice and pressure-equalizing grooves of the aerostatic restrictor, as well as selecting the air source pressure and air film thickness.
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Removal of Strontium Ions by Immobilized Saccharomyces Cerevisiae in Magnetic Chitosan Microspheres
Yanan Yin,Jianlong Wang,Xiaoyong Yang,Weihua Li 한국원자력학회 2017 Nuclear Engineering and Technology Vol.49 No.1
A novel biosorbent, immobilized Saccharomyces cerevisiae in magnetic chitosan microspheres was prepared, characterized, and used for the removal of Sr2+ from aqueous solution. The structure and morphology of immobilized S. cerevisiae before and after Sr2+ adsorption were observed using scanning electron microscopy with energy dispersive X-ray spectroscopy. The experimental results showed that the Langmuir and Freundlich isotherm models could be used to describe the Sr2+ adsorption onto immobilized S. cerevisiae microspheres. The maximal adsorption capacity (qm) was calculated to be 81.96 mg/g by the Langmuir model. Immobilized S. cerevisiae was an effective adsorbent for the Sr2+ removal from aqueous solution.
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Shuting Zhuang,Yanan Yin,Jianlong Wang 한국원자력학회 2018 Nuclear Engineering and Technology Vol.50 No.1
Chitosan was modified by gamma radiationeinduced grafting with maleic acid and then used for theremoval of cobalt ions from aqueous solutions. Chitosan-g-maleic acid was characterized by FourierTransform infrared spectroscopy (FT-IR). The effect of the dose (1e5 kGy) and monomer concentration(0.3e1.3%, m/v) on the grafting ratio was examined. The adsorption kinetics and isotherms were alsoinvestigated. The results showed that the optimal dose for grafting was 2 kGy. When monomer concentrationwas within the range of 0.3e1.3% (m/v), the grafting ratio increased almost linearly. For theadsorption of cobalt ions by chitosan-g-maleic acid beads, the pseudo second-order kinetic model(R2 ¼ 0.99) and Temkin isotherm model (R2 ¼ 0.96) were able to fit the experimental data reasonablywell. The equilibrium adsorption capacity of cobalt ions increased from 2.00 mg/g to 2.78 mg/g afterchitosan modification
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Tao Chunrong,Yuan Guangxiong,Xu Pengfei,Wang Hao,Zhou Peiyang,Yi Tingyu,Li Kai,Cui Tao,Gao Jun,Li Rui,Sun Jun,Zhang Chao,Wang Li,Liu Tianlong,Song Jianlong,Yin Yamei,Nguyen Thanh N.,Li Qing,Hu Wei 대한뇌졸중학회 2023 Journal of stroke Vol.25 No.3
Background and Purpose To examine the clinical and safety outcomes after endovascular treatment (EVT) for acute basilar artery occlusion (BAO) with different anesthetic modalities. Methods This was a retrospective analysis using data from the Endovascular Treatment for Acute Basilar Artery Occlusion (ATTENTION) registry. Patients were divided into two groups defined by anesthetic modality performed during EVT: general anesthesia (GA) or non-general anesthesia (non-GA). The association between anesthetic management and clinical outcomes was evaluated in a propensity score matched (PSM) cohort and an inverse probability of treatment weighting (IPTW) cohort to adjust for imbalances between the two groups. Results Our analytic sample included 1,672 patients from 48 centers. The anesthetic modality was GA in 769 (46.0%) and non-GA in 903 (54.0%) patients. In our primary analysis with the PSM-based cohort, non-GA was comparable to GA concerning the primary outcome (adjusted common odds ratio [acOR], 1.01; 95% confidence interval [CI], 0.82 to 1.25; <i>P</i>=0.91). Mortality at 90 days was 38.4% in the GA group and 35.8% in the non-GA group (adjusted risk ratio, 0.95; 95% CI, 0.83 to 1.08; <i>P</i>=0.44). In our secondary analysis with the IPTW-based cohort, the anesthetic modality was significantly associated with the distribution of modified Rankin Scale at 90 days (acOR: 1.45 [95% CI: 1.20 to 1.75]). Conclusion In this nationally-representative observational study, acute ischemic stroke patients due to BAO undergoing EVT without GA had similar clinical and safety outcomes compared with patients treated with GA. These findings provide the basis for large-scale randomized controlled trials to test whether anesthetic management provides meaningful clinical effects for patients undergoing EVT.
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