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Betts对流调整方案在移动套网格台风数值模式中的初步试验 被引量:2
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作者 刘宇迪 翟子航 +1 位作者 闫济宙 林上金 《气象科学》 CSCD 北大核心 1999年第4期335-342,共8页
Betts对流调整方案采用的是垂直温湿场向观测的准平衡热力结构松驰的方法。本文在一个考虑了台风初值化的移动套网格台风数值模式中,对Betts方案进行了初步试验。结果表明:Betts方案能较好的预报出台风移动的路径和降水过程,并在台... Betts对流调整方案采用的是垂直温湿场向观测的准平衡热力结构松驰的方法。本文在一个考虑了台风初值化的移动套网格台风数值模式中,对Betts方案进行了初步试验。结果表明:Betts方案能较好的预报出台风移动的路径和降水过程,并在台风路径、降水落区预报以及对流增温的垂直分布等方面都略优于Kuo方案的预报结果。 展开更多
关键词 对流参数 betts对流调整 台风 数值模式
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开放性眼球损伤患者术后再次手术的危险因素分析及预测模型构建
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作者 张盼盼 刘彦 《吉林医药学院学报》 2025年第5期344-348,共5页
目的分析开放性眼球损伤(OGI)患者的早期视力特征及再次手术的独立预测因素,构建并验证列线图模型,为术后风险分层和干预策略提供依据。方法纳入2022年1月至2024年12月收治的OGI患者200例,记录患者的人口学和眼部损伤资料,多因素logisti... 目的分析开放性眼球损伤(OGI)患者的早期视力特征及再次手术的独立预测因素,构建并验证列线图模型,为术后风险分层和干预策略提供依据。方法纳入2022年1月至2024年12月收治的OGI患者200例,记录患者的人口学和眼部损伤资料,多因素logistic回归筛选再次手术的独立危险因素,构建列线图预测模型,校准曲线及ROC曲线评估模型的区分度和校准能力。结果200例患者中,46例需再次手术,术前术后再手术组初始视力均明显低于对照组,对照组术后视力改善率显著高于再手术组。初始视力≤0.1、性别男性、虹膜脱出、视网膜脱离、麻醉方式为局麻和BETT损伤类型是OGI患者再次手术的独立影响因素,以此构建模型,模型预测OGI患者再次手术发生率的AUC为0.849(95%CI:0.768~0.929),灵敏度为0.679,特异性为0.871,Hosmer-Lemeshow拟合优度检验表明预测模型具有较好的标定能力(χ^(2)=2.264,P=0.759)。结论本研究构建的列线图模型整合了初始视力、性别、虹膜脱出、视网膜脱离、麻醉方式及BETT分型等关键因素,可有效预测OGI患者再次手术风险,辅助临床个体化决策。 展开更多
关键词 开放性眼球损伤 再次手术 列线图模型 BETT分型 危险因素 视网膜脱离
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Traumatic cataracts in children: Visual outcome
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作者 Mehul A Shah Shreya M Shah +1 位作者 Aarti H Chaudhry Sandip Pannu 《World Journal of Ophthalmology》 2015年第2期80-85,共6页
AIM: To review results of traumatic cataracts in children.METHODS: Only those pediatric patients who fitted in the definite inclusion criteria were considered for study enrollment. They were further examined for any k... AIM: To review results of traumatic cataracts in children.METHODS: Only those pediatric patients who fitted in the definite inclusion criteria were considered for study enrollment. They were further examined for any kind of co-morbidities because of trauma, operated upon for traumatic cataracts with intraocular lens implantation. Amblyopia if present was treated. All were re-examined at the culmination of six-week postoperative period.According to the Birmingham Eye Trauma Terminology System the traumatic cataract cases were divided into group 1(open globe) and group 2(closed globe), and then determinants of visual acuity were compared.RESULTS: There were 544 eyes in group 1 and 127 eyes in group 2 in our study of 671 eyes with pediatric traumatic cataracts. Visual acuity at the end of 6 wk after surgery in the operated eye was > 6/60 in 450(82.7%) and ≥ 6/12 in 215(39.4%) eyes in the open globe group and > 20/200 in 127(81.8%) and ≥ 6/12 in 36(28.4%) eyes in the closed globe group(P = 0.143), and the difference between the groups was not significant in children. Overall, 402(39.4%) eyes gained ≥ 6/60 and > 5/12 in 238(35.4%) cases. Surgical treatment caused a significant difference in visual outcome(P = 0.000). When we compared achieved visual outcome with ocular trauma score predicted vision, no significant difference was found.CONCLUSION: Traumatic cataracts in children may have better outcome and ocular trauma score is a useful predictive method for the ocular trauma in children. 展开更多
关键词 TRAUMATIC CATARACT betts OCULAR TRAUMA SCORE Visual OUTCOME
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CONCENTRIC CIRCLES
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作者 Yukio Hatoyama 《Beijing Review》 2019年第40期25-25,共1页
We are part of the Bett and Road Initiative. We have our own infrastructure development project Both our countries today are working on huge infrastructure development projects, expanding the transport and transit cap... We are part of the Bett and Road Initiative. We have our own infrastructure development project Both our countries today are working on huge infrastructure development projects, expanding the transport and transit capacities of our countries. The Belt and Road Initiative is not only an economic project but also a security project because it brings development progress and prosperity to other countries. 展开更多
关键词 Bett ROAD INITIATIVE INFRASTRUCTURE DEVELOPMENT PROJECTS
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