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容县沙田柚黑星病综合防治试验 被引量:1
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作者 杨杰 杨昌鹏 +1 位作者 李鼎伟 廖远汉 《广西农学报》 2015年第6期19-21,33,共4页
黑星病是导致容县沙田柚果实缺陷的主要病害之一,制约了沙田柚产业的发展。为给做好容县沙田柚黑星病的综合防治提供技术支撑,对沙田柚黑星病进行田间试验研究,观察不同时期、不同药剂的综合防治情况。结果:对10个果园中的70株果树综合... 黑星病是导致容县沙田柚果实缺陷的主要病害之一,制约了沙田柚产业的发展。为给做好容县沙田柚黑星病的综合防治提供技术支撑,对沙田柚黑星病进行田间试验研究,观察不同时期、不同药剂的综合防治情况。结果:对10个果园中的70株果树综合采用冬季清园、地膜覆盖、药剂处理、果实套袋技术等措施后,病果总数下降为44个,有病果率下降为6.28%;对照组的病果率保持在98%,比未防治时的95.2%的病果率加重。表明:采取上述综合技术措施,可以使黑星病达到良好的防治效果。 展开更多
关键词 沙田柚 黑星病 防治 试验
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基于CFD的36英尺水翼双体船阻力与运动预报 被引量:3
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作者 李豪杰 PUTRA Arfis Maydino Firmansyah +3 位作者 孙科 冷建兴 赵汉星 陈嘉鸿 《船舶力学》 EI CSCD 北大核心 2020年第6期740-753,共14页
近年来,兼具双体船和水翼船优点的水翼双体船迅速发展。本文通过对一艘36英尺的水翼双体船的实船试验和CFD仿真,得出最佳的双体船水翼配置形式。本文的CFD仿真主要针对迎波状态下阻力和运动,通过STAR-CCM+进行仿真,结果显示:在相同航速... 近年来,兼具双体船和水翼船优点的水翼双体船迅速发展。本文通过对一艘36英尺的水翼双体船的实船试验和CFD仿真,得出最佳的双体船水翼配置形式。本文的CFD仿真主要针对迎波状态下阻力和运动,通过STAR-CCM+进行仿真,结果显示:在相同航速下,相比没有安装水翼的双体船,安装了水翼的总阻力减小量高达26%;同时,在相同的海况下,安装水翼可以将航速提高7 kn,速度提高了21%。同时也得到了最佳的水翼配置:艉部攻角-0.2°、艏部攻角1°,在该配置下最大航速40 kn时的最低总阻力为628 kN。仿真计算结果与实船试验非常接近,表明本文所提的水翼双体船阻力和运动预报计算方法是合理可行的。 展开更多
关键词 水翼双体船 CFD 减阻 实船试验 star-CCM+
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OSA treatment history in an upper airway stimulation trial cohort 被引量:1
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作者 Ryan J.Soose Tapan A.Padhya +3 位作者 M.Boyd Gillespie Oleg Froymovich Ho-sheng Lin B.Tucker Woodson 《World Journal of Otorhinolaryngology-Head and Neck Surgery》 2017年第2期79-84,共6页
Objectives:Analyze the obstructive sleep apnea (OSA) treatment history in a group of participants who enrolled in a hypoglossal nerve stimulation trial Methods:Moderate-severe OSA patients with difficulty adhering to ... Objectives:Analyze the obstructive sleep apnea (OSA) treatment history in a group of participants who enrolled in a hypoglossal nerve stimulation trial Methods:Moderate-severe OSA patients with difficulty adhering to CPAP presented for enrollment in a multicenter trial.Self-reported history on prior OSA medical therapy was collected at enrollment,including OSA diagnosis date,CPAP start and stop dates,oral appliance trial,and reasons for discontinuation or non-adherence.Results:The cohort consisted of 929 participants,83% male,with a mean age (53.9 ± 10.5) years.Ninety percent (n =835) had complete CPAP information including 47% (n =435) who discontinued therapy prior to enrollment and 43% (n =400) who were still attempting CPAP but had inadequate adherence.Abandonment rates were 60% at 1-year,73% at 3-years,and 86% at 5-years.Oral appliance therapy was attempted by 171 patients for mean (1.8 ± 2.3) years,with 81% abandonment at 1 year,89% at 3-years,and 94% at 5-years.Conclusions:In this CPAP-refractory cohort,high rates of CPAP abandonment were reported in the first several years with approximately half of the participants not receiving any treatment despite being diagnosed for >5 years.Close clinical follow-up and consideration of alternative treatment options is indicated in all OSA patients in order to ensure adequate longitudinal care. 展开更多
关键词 Upper airway STIMULATION HYPOGLOSSAL nerve STIMULATION star trial OBSTRUCTIVE sleep APNEA CPAP failure
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