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SMILE与FS-LASIK术后角膜上皮重塑的临床研究
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作者 张杨婧 马立威 +3 位作者 张帆 柯春梅 王瑞夫 祖丽皮娅 《国际眼科杂志》 CAS 2025年第1期37-41,共5页
目的:比较飞秒激光小切口角膜基质透镜取出术(SMILE)与飞秒激光辅助准分子激光原位角膜磨镶术(FS-LASIK)术后角膜上皮厚度(CET)的变化特点。方法:收集2022-12/2023-11在乌鲁木齐爱尔眼科医院接受屈光手术患者187例187眼。按手术方式分为... 目的:比较飞秒激光小切口角膜基质透镜取出术(SMILE)与飞秒激光辅助准分子激光原位角膜磨镶术(FS-LASIK)术后角膜上皮厚度(CET)的变化特点。方法:收集2022-12/2023-11在乌鲁木齐爱尔眼科医院接受屈光手术患者187例187眼。按手术方式分为SMILE组110例110眼和FS-LASIK组77例77眼。应用眼前节光学相干断层扫描技术(OCT)分别于术前和术后1 wk,1、3、6 mo测量患者的CET。结果:比较术后6 mo时角膜中央区、旁中央区、中周区角膜上皮厚度变化量(△CET),SMILE的特点为中央区增厚最明显,中周区上皮最少;FS-LASIK的特点为旁中央区增厚最明显,中周区最少。术后1 wk,1、3、6 mo时SMILE与FS-LASIK组角膜0-7 mm范围的平均ΔCET与术前等效球镜均具有相关性。结论:SMILE和FS-LASIK术后6 mo内上皮增厚程度随时间变化有相似的趋势和不同的特点,二者△CET均与术前等效球镜正相关。 展开更多
关键词 飞秒激光小切口角膜基质透镜取出术(smile) 飞秒激光辅助准分子激光原位角膜磨镶术(FS-LASIK) 角膜上皮重塑 光学相干断层扫描技术(OCT)
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Locally Enhanced Flow and Electric Fields Through a Tip Effect for Efficient Flow‑Electrode Capacitive Deionization
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作者 Ziquan Wang Xiangfeng Chen +5 位作者 Yuan Zhang Jie Ma Zhiqun Lin Amor Abdelkader Maria‑Magdalena Titirici Libo Deng 《Nano-Micro Letters》 SCIE EI CAS 2025年第2期1-17,共17页
Low-electrode capacitive deionization(FCDI)is an emerging desalination technology with great potential for removal and/or recycling ions from a range of waters.However,it still suffers from inefficient charge transfer... Low-electrode capacitive deionization(FCDI)is an emerging desalination technology with great potential for removal and/or recycling ions from a range of waters.However,it still suffers from inefficient charge transfer and ion transport kinetics due to weak turbulence and low electric intensity in flow electrodes,both restricted by the current collectors.Herein,a new tip-array current collector(designated as T-CC)was developed to replace the conventional planar current collectors,which intensifies both the charge transfer and ion transport significantly.The effects of tip arrays on flow and electric fields were studied by both computational simulations and electrochemical impedance spectroscopy,which revealed the reduction of ion transport barrier,charge transport barrier and internal resistance.With the voltage increased from 1.0 to 1.5 and 2.0 V,the T-CC-based FCDI system(T-FCDI)exhibited average salt removal rates(ASRR)of 0.18,0.50,and 0.89μmol cm^(-2) min^(-1),respectively,which are 1.82,2.65,and 2.48 folds higher than that of the conventional serpentine current collectors,and 1.48,1.67,and 1.49 folds higher than that of the planar current collectors.Meanwhile,with the solid content in flow electrodes increased from 1 to 5 wt%,the ASRR for T-FCDI increased from 0.29 to 0.50μmol cm^(-2) min^(-1),which are 1.70 and 1.67 folds higher than that of the planar current collectors.Additionally,a salt removal efficiency of 99.89%was achieved with T-FCDI and the charge efficiency remained above 95%after 24 h of operation,thus showing its superior long-term stability. 展开更多
关键词 Flow-electrode Capacitive deionization Current collector Tip effect DESALINATION
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Late effects of the treatment of childhood cancer
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作者 Jelena Roganovic 《World Journal of Clinical Cases》 SCIE 2025年第7期6-12,共7页
Excellent progress has been made in the last few decades in the cure rates of pediatric malignancies,with more than 80%of children with cancer who have access to contemporary treatment being cured.However,the therapie... Excellent progress has been made in the last few decades in the cure rates of pediatric malignancies,with more than 80%of children with cancer who have access to contemporary treatment being cured.However,the therapies responsible for this survival can also produce adverse physical and psychological long-term outcomes,referred to as late effects,which appear months to years after the completion of cancer treatment.Research has shown that 60%to 90%of childhood cancer survivors(CCSs)develop one or more chronic health conditions,and 20%to 80%of survivors experience severe or life-threatening complications during adulthood.Therefore,understanding the late side effects of such treatments is important to improve the health and quality of life of the growing population of CCSs. 展开更多
关键词 SURVIVORSHIP CANCER CHILDREN TREATMENT Late effects
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Microstructural evolution during the progressive transformation-induced plasticity effect in a Fe-0.1C-5Mnmedium manganese steel
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作者 Mei Zhang Wenhao Li +3 位作者 Yangfei Chen Yang Jiang Xiaofei Guo Han Dong 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS 2025年第2期369-379,共11页
The microstructural evolution of a cold-rolled and intercritical annealed medium-Mn steel(Fe-0.10C-5Mn)was investigated during uniaxial tensile testing.In-situ observations under scanning electron microscopy,transmiss... The microstructural evolution of a cold-rolled and intercritical annealed medium-Mn steel(Fe-0.10C-5Mn)was investigated during uniaxial tensile testing.In-situ observations under scanning electron microscopy,transmission electron microscopy,and X-ray diffraction analysis were conducted to characterize the progressive transformation-induced plasticity process and associated fracture initiation mechanisms.These findings were discussed with the local strain measurements via digital image correlation.The results indicated that Lüders band formation in the steel was limited to 1.5%strain,which was mainly due to the early-stage martensitic phase transformation of a very small amount of the less stable large-sized retained austenite(RA),which led to localized stress concentrations and strain hardening and further retardation of yielding.The small-sized RA exhibited high stability and progressively transformed into martensite and contributed to a stably extended Portevin-Le Chatelier effect.The volume fraction of RA gradually decreased from 26.8%to 8.2%prior to fracture.In the late deformation stage,fracture initiation primarily occurred at the austenite/martensite and ferrite/martensite interfaces and the ferrite phase. 展开更多
关键词 medium-Mn steel retained austenite progressive transformation-induced plasticity effect local strain fracture initiation
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Novel Methodologies for Preventing Crack Propagation in Steel Gas Pipelines Considering the Temperature Effect
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作者 Nurlan Zhangabay Ulzhan Ibraimova +4 位作者 Marco Bonopera Ulanbator Suleimenov Konstantin Avramov Maryna Chernobryvko Aigerim Yessengali 《Structural Durability & Health Monitoring》 EI 2025年第1期1-23,共23页
Using the software ANSYS-19.2/Explicit Dynamics,this study performedfinite-element modeling of the large-diameter steel pipeline cross-section for the Beineu-Bozoy-Shymkent gas pipeline with a non-through straight crac... Using the software ANSYS-19.2/Explicit Dynamics,this study performedfinite-element modeling of the large-diameter steel pipeline cross-section for the Beineu-Bozoy-Shymkent gas pipeline with a non-through straight crack,strengthened by steel wire wrapping.The effects of the thread tensile force of the steel winding in the form of single rings at the crack edges and the wires with different winding diameters and pitches were also studied.The results showed that the strengthening was preferably executed at a minimum value of the thread tensile force,which was 6.4%more effective than that at its maximum value.The analysis of the influence of the winding dia-meters showed that the equivalent stresses increased by 32%from the beginning of the crack growth until the wire broke.The increment in winding diameter decelerated the disclosure of the edge crack and reduced its length by 8.2%.The analysis of the influence of the winding pitch showed that decreasing the distance between the winding turns also led to a 33.6%reduction in the length of the straight crack and a 7.9%reduction in the maximum stres-ses on the strengthened pipeline cross-section.The analysis of the temperature effect on the pipeline material,within a range from-40℃ to+50℃,resulted in a crack length change of up to 5.8%.As the temperature dropped,the crack length decreased.Within such a temperature range,the maximum stresses were observed along the cen-tral area of the crack,which were equal to 413 MPa at+50℃ and 440 MPa at-40℃.The results also showed that the presence of the steel winding in the pipeline significantly reduced the length of crack propagation up to 8.4 times,depending on the temperature effect and design parameters of prestressing.This work integrated the existing methods for crack localization along steel gas pipelines. 展开更多
关键词 Crack propagation finite-element internal pressure PRESTRESSING steel gas pipeline temperature effect
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Relationship between parenting stress and behavioral and emotional problems in preschool children: A mediation effect analysis
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作者 Zhi-Wei Fu Yue-Jing Li +3 位作者 Ran Yu Rui-Qing Guo Li-Xia Gao Sheng-Xia Zhao 《World Journal of Psychiatry》 SCIE 2025年第1期128-136,共9页
BACKGROUND Emotional reactions,such as anxiety,irritability,and aggressive behavior,have attracted clinical attention as behavioral and emotional problems in preschool-age children.AIM To investigate the current statu... BACKGROUND Emotional reactions,such as anxiety,irritability,and aggressive behavior,have attracted clinical attention as behavioral and emotional problems in preschool-age children.AIM To investigate the current status of family rearing,parental stress,and behavioral and emotional problems of preschool children and to analyze the mediating effect of the current status of family rearing on parental stress and behavioral/emo-tional problems.METHODS We use convenience sampling to select 258 preschool children in the physical examination center of our hospital from October 2021 to September 2023.The children and their parents were evaluated using a questionnaire survey.Pearson's correlation was used to analyze the correlation between child behavioral and emotional problems and parental stress and family rearing,and the structural equation model was constructed to test the mediating effect.RESULTS The score for behavioral/emotional problems of 258 preschool children was(27.54±3.63),the score for parental stress was(87.64±11.34),and the score for parental family rearing was(31.54±5.24).There was a positive correlation between the behavioral and emotional problems of the children and the“hostile/mandatory”parenting style;meanwhile,showed a negative correlation with the“support/participation”parenting style(all P<0.05).The intermediary effect value between the family upbringing of parents in parental stress and children's behavior problems was 29.89%.CONCLUSION Parental family upbringing has a mediating effect between parental stress and behavioral and emotional problems of children.Despite paying attention to the behavioral and emotional problems of preschool-age children,clinical medical staff should provide correct and reasonable parenting advice to their parents to promote the mental health of preschool-age children. 展开更多
关键词 Preschool children Parenting stress Children's behavioral and emotional problems Family rearing Mediating effect
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Variations in quantifying patient reported outcome measures to estimate treatment effect
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作者 Sathish Muthu Srujun Vadranapu 《World Journal of Methodology》 2025年第2期44-53,共10页
In the practice of healthcare,patient-reported outcomes(PROs)and PRO measures(PROMs)are used as an attempt to observe the changes in complex clinical situations.They guide us in making decisions based on the evidence ... In the practice of healthcare,patient-reported outcomes(PROs)and PRO measures(PROMs)are used as an attempt to observe the changes in complex clinical situations.They guide us in making decisions based on the evidence regarding patient care by recording the change in outcomes for a particular treatment to a given condition and finally to understand whether a patient will benefit from a particular treatment and to quantify the treatment effect.For any PROM to be usable in health care,we need it to be reliable,encapsulating the points of interest with the potential to detect any real change.Using structured outcome measures routinely in clinical practice helps the physician to understand the functional limitation of a patient that would otherwise not be clear in an office interview,and this allows the physician and patient to have a meaningful conver-sation as well as a customized plan for each patient.Having mentioned the rationale and the benefits of PROMs,understanding the quantification process is crucial before embarking on management decisions.A better interpretation of change needs to identify the treatment effect based on clinical relevance for a given condition.There are a multiple set of measurement indices to serve this effect and most of them are used interchangeably without clear demarcation on their differences.This article details the various quantification metrics used to evaluate the treatment effect using PROMs,their limitations and the scope of usage and implementation in clinical practice. 展开更多
关键词 Patient-reported outcome measures Treatment effect Minimal clinical important difference Patient-accepted symptom state Minimum detectable change ORTHOPEDICS
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SMILE治疗近视患者效果及对角膜生物力学的影响
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作者 韩宝军 史芳荣 华剑楠 《国际眼科杂志》 CAS 2024年第4期522-527,共6页
目的:探讨飞秒激光小切口角膜基质透镜取出术(SMILE)治疗近视患者的效果及对角膜生物力学的影响。方法:回顾性研究。选择2020-01/2021-12在安阳市眼科医院拟行角膜屈光手术的近视患者120例240眼。根据手术治疗方式分为SMILE组64例128眼... 目的:探讨飞秒激光小切口角膜基质透镜取出术(SMILE)治疗近视患者的效果及对角膜生物力学的影响。方法:回顾性研究。选择2020-01/2021-12在安阳市眼科医院拟行角膜屈光手术的近视患者120例240眼。根据手术治疗方式分为SMILE组64例128眼,经上皮准分子激光角膜切削术(TransPRK)组56例112眼。比较两组患者术后1、7 d,1、3、6 mo,1 a的裸眼视力、角膜生物力学、角膜内皮细胞数目、角膜后表面高度、角膜表面规则指数、手术并发症。结果:SMILE组患者术后1、7 d,1 mo裸眼视力均优于TransPRK组(均P<0.001),但两组术后3、6 mo,1 a均无差异(均P>0.05)。与术前相比,两组患者术后的角膜补偿眼压、模拟Goldmann眼压、角膜阻力因子、角膜滞后量呈先下降后升高趋势。SMILE组术后1、7 d,1 mo角膜补偿眼压、模拟Goldmann眼压、角膜阻力因子、角膜滞后量均高于TransPRK组(均P<0.05),但术后3、6 mo,1 a均无差异(均P>0.05)。手术前后两组患者角膜内皮细胞数目、角膜后表面高度均无差异(均P>0.05)。与术前相比,两组患者术后角膜表面规则指数呈先升高后降低趋势,但组间比较无差异(P>0.05)。两组患者术后并发症发生率比较无差异(P>0.05)。结论:相比TransPRK,SMILE对角膜生物力学的影响较小,早期视力恢复效果更好,两种手术的远期视力无差异,均有良好的安全性和有效性。 展开更多
关键词 飞秒激光小切口角膜基质透镜取出术(smile) 经上皮准分子激光角膜切削术 角膜生物力学 视力
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SMILE,FS-LASIK治疗术对高度近视患者角膜稳定性及视觉质量的影响
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作者 杨晶 刘阳 《中文科技期刊数据库(引文版)医药卫生》 2024年第5期0098-0101,共4页
评估SMILE和FS-LASIK两种手术方式对高度近视患者角膜稳定性及视觉质量的影响。方法 采用回顾性分析选取我院于2020年6月-2021年6月期间收诊的96例高度近视患者,根据治疗方式分为SMILE组与FS-LASIK组,各48例。比较这两种方法对患者角膜... 评估SMILE和FS-LASIK两种手术方式对高度近视患者角膜稳定性及视觉质量的影响。方法 采用回顾性分析选取我院于2020年6月-2021年6月期间收诊的96例高度近视患者,根据治疗方式分为SMILE组与FS-LASIK组,各48例。比较这两种方法对患者角膜稳定性和视觉质量的影响。结果 术后1、3mo的跟踪观察中,与术前相比,两组患者的角膜最薄点显著降低(p<0.05);而角膜后表面高度降低幅度无显著差异(p>0.05)。在术后1mo,SMILE组的角膜最薄点高度高于FS-LASIK组(p<0.05);术后3mo,SMILE组的该高度低于FS-LASIK组,差异不显著(p>0.05)。在术后1、3mo,SMILE组的角膜后表面高度普遍低于FS-LASIK组,无统计学意义(p>0.05)。术后1mo,两组患者客观散射指数(OSI)与术前比较升高,且SMILE组低于FS-LASIK组(p<0.05);术后3mo,两组患者OSI与术前比较升高,且SMILE组低于FS-LASIK组,无统计学差异(p>0.05)。术后1mo,两组患者的调制传递函数截止频率(MTF cut-off)较术前降低,且SMILE组高于FS-LASIK组(p<0.05);术后3mo,两组患者的MTF cut-off值较术前降低,SMILE组高于FS-LASIK组,无统计学差异(p>0.05)。SMILE组的斯特列比(SR)在术后1、3mo均高于FS-LASIK组,但无统计学差异(p>0.05)。结论 SMILE手术在术后早期对高度近视患者的视觉质量改善方面显示出一定的优势,特别是在OSI和MTF cut-off值方面。但就角膜稳定性而言,SMILE和FS-LASIK手术之间无显著差异。这表明SMILE手术是高度近视患者的一个更佳选择,尤其是在考虑早期视觉质量改善方面。 展开更多
关键词 smile FS-LASIK 高度近视 角膜稳定性 视觉质量
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SMILE和WG-FS-LASIK治疗低度无散光近视患者术后早期视觉质量比较
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作者 孔旻 罗武强 +5 位作者 李丽丽 肖信 陈琦 林恩韦 林红 甘宇 《中国临床新医学》 2024年第2期200-205,共6页
目的比较飞秒激光小切口角膜基质内透镜取出术(SMILE)和波前像差引导的准分子激光原位角膜磨镶术(WG-FS-LASIK)治疗低度无散光近视患者术后的早期视觉质量。方法选择2022年3月至6月在广西壮族自治区人民医院视光中心行SMILE治疗的患者15... 目的比较飞秒激光小切口角膜基质内透镜取出术(SMILE)和波前像差引导的准分子激光原位角膜磨镶术(WG-FS-LASIK)治疗低度无散光近视患者术后的早期视觉质量。方法选择2022年3月至6月在广西壮族自治区人民医院视光中心行SMILE治疗的患者15例(30眼,SMILE组),行WG-FS-LASIK治疗的患者15例(30眼,WG-FS-LASIK组)。所有患者术前无散光且最佳矫正视力所需最低球镜度数均≤-3.00 D。于术前和术后1 d、1周、1个月测量视力、全眼像差(慧差、三叶草像差和球差)、客观散射指数(OSI)、调制传递函数截止频率(MTF_(cut-off))、斯特列尔比(SR)、可预测对比度视力(PVA)(包括PVA 100%、PVA 20%、PVA 9%)。比较两组观察指标测量结果。结果两组术后等效球镜、视力情况均较术前显著改善(P<0.05),但两组各时间点比较差异无统计学意义(P>0.05)。两组术后OSI、SR、PVA 9%均较术前显著改善(P<0.05)。WG-FS-LASIK组在术后1 d、1周、1个月的OSI水平均显著低于SMILE组(P<0.05)。在术后1个月,WG-FS-LASIK组PVA 9%显著高于SMILE组(P<0.05)。SMILE组和WG-FS-LASIK组术后慧差均呈先上升后下降的趋势,但WG-FS-LASIK组变化幅度更小,在术后1 d、1周、1个月,WG-FS-LASIK组慧差小于SMILE组,差异有统计学意义(P<0.05)。结论SMILE和WG-FS-LASIK均能提高低度无散光近视患者术后早期视觉质量,但WG-FS-LASIK早期视力恢复更好,且夜间视觉质量改善更优。 展开更多
关键词 飞秒激光小切口角膜基质内透镜取出术 波前像差引导的准分子激光原位角膜磨镶术 低度无散光近视 视觉质量
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不同程度近视患者行SMILE术后的有效光学区及角膜高阶像差比较
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作者 潘雪珂 陆强 《国际眼科杂志》 CAS 2024年第7期1157-1161,共5页
目的:比较低、中、高度近视患者行飞秒激光小切口基质透镜取出术(SMILE)后的有效光学区和角膜高阶像差。方法:收集2019-02/2021-02在我院行SMILE手术的患者134例,均取右眼入组,按等效球镜度(SE)分为低度近视组SE>-3.00 D,中度近视组-... 目的:比较低、中、高度近视患者行飞秒激光小切口基质透镜取出术(SMILE)后的有效光学区和角膜高阶像差。方法:收集2019-02/2021-02在我院行SMILE手术的患者134例,均取右眼入组,按等效球镜度(SE)分为低度近视组SE>-3.00 D,中度近视组-6.00 D<SE≤-3.00 D,高度近视组SE≤-6.00 D三组,分别于术前和术后1 mo行Pentacam检查,分析各组内手术前后角膜总高阶像差(tHOA)、球差、彗差有无差异,及术后三组间角膜总高阶像差、球差、彗差及有效光学区大小(EOZ)有无差异。结果:SMILE术后1 mo,三组术后有效光学区均小于预设光学区,随着屈光度数增加,有效光学区越小(P<0.05);术后1 mo角膜总高阶像差、球差、彗差均高于术前,除低近视度组球差术前与术后1 mo无差异(P>0.05),其余组别均有差异(P<0.05);角膜总高阶像差、球差和彗差随着屈光度数增加而增加,三组角膜总高阶像差和球差有差异(均P<0.05),高度近视组与中度近视组、低度近视组彗差结果均有差异(P<0.05),中度近视组与低度近视组彗差结果无差异(P>0.05)。结论:随着手术矫正的屈光度数增加,术后有效光学区减少越多,角膜高阶像差增加越明显;SMILE术后1 mo角膜高阶像差较术前增加。 展开更多
关键词 飞秒激光小切口基质透镜取出术(smile) 有效光学区 角膜总高阶像差 球差 彗差
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SMILE术后主导眼转变及对视觉质量的影响
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作者 张娟 易湘龙 +1 位作者 杨超 张婷 《国际眼科杂志》 CAS 2024年第7期1132-1138,共7页
目的:分析SMILE术后主导眼的转变情况及对视觉质量的影响。方法:前瞻性临床研究。选取2022-06/12在新疆医科大学第一附属医院行SMILE术矫正近视的患者140例280眼,根据术后3 mo内随访时卡洞法检查主导眼别转变情况分为转变组(46例92眼)... 目的:分析SMILE术后主导眼的转变情况及对视觉质量的影响。方法:前瞻性临床研究。选取2022-06/12在新疆医科大学第一附属医院行SMILE术矫正近视的患者140例280眼,根据术后3 mo内随访时卡洞法检查主导眼别转变情况分为转变组(46例92眼)和非转变组(94例188眼)。术前、术后1、3 mo,评估两组患者的裸眼视力(UCVA),采用屈光矫正者生活质量(QIRC)量表评估主观视觉质量,并检测全眼高阶像差评价客观视觉质量。结果:纳入患者SMILE术前主导眼为右眼105例,左眼35例,术后1 mo 46例患者主导眼发生转变,术后3 mo较术后1 mo无新发主导眼转变。术前、术后1、3 mo,转变组和非转变组患者UCVA、QIRC量表评分均无差异(P>0.05)。两组患者主导眼比较,术后3 mo转变组患者总高阶像差、球差显著高于非转变组(P=0.030、0.046);两组患者非主导眼比较,术后1 mo转变组患者三叶草像差显著高于非转变组(P=0.008)。术后1 mo,转变组患者双眼三叶草像差差值明显高于非转变组(P=0.022),余均无差异。结论:SMILE术后部分患者会发生主导眼的转变,但对主观视觉质量无显著影响,术后早期客观视觉质量下降可能是主导眼转变的相关因素。 展开更多
关键词 近视 飞秒激光小切口角膜基质透镜取出术(smile) 主导眼 转变 全眼像差 视觉质量
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Preface to the Special Issue on Modeling and Data Analysis Methods for the SMILE mission 被引量:2
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作者 TianRan Sun Hyunju Connor Andrey Samsonov 《Earth and Planetary Physics》 EI CSCD 2024年第1期1-4,共4页
The SMILE(Solar wind Magnetosphere Ionosphere Link Explorer)project(http://www.nssc.cas.cn/smile/,https://www.cosmos.esa.int/web/smile/mission)is a joint spacecraft mission of the European Space Agency(ESA)and the Chi... The SMILE(Solar wind Magnetosphere Ionosphere Link Explorer)project(http://www.nssc.cas.cn/smile/,https://www.cosmos.esa.int/web/smile/mission)is a joint spacecraft mission of the European Space Agency(ESA)and the Chinese Academy of Sciences(CAS)with an expected launch in 2025.SMILE aims to study the global interactions of solar wind–magnetosphere–ionosphere innovatively by imaging the Earth’s magnetosheath and cusps in soft X-rays and the northern auroral region in ultraviolet(UV)while simultaneously measuring plasma and magnetic field parameters in the solar wind and magnetosheath along a highly-elliptical and highly-inclined orbit.This special issue is composed of 22 articles,presenting recent progress in modeling and data analysis techniques developed for the SMILE mission.In this preface,we categorize the articles into the following seven topics and provide brief summaries:(1)instrument descriptions of the Soft X-ray Imager(SXI),(2)numerical modeling of the X-ray signals,(3)data processing of the X-ray images,(4)boundary tracing methods from the simulated images,(5)physical phenomena and a mission concept related to the scientific goals of SMILE-SXI,(6)studies of the aurora,and(7)ground-based support for SMILE. 展开更多
关键词 smile X-ray imaging MAGNETOSPHERE auroral IONOSPHERE
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SMILE不同角膜帽厚度对近视散光患者术后散光及早期视觉质量的影响
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作者 张新立 刘洋 +1 位作者 符建 刘向玲 《国际眼科杂志》 CAS 2024年第11期1811-1815,共5页
目的:比较飞秒激光小切口角膜基质透镜取出术(SMILE)中不同眼角膜帽厚度对近视散光患者术后散光及早期视觉质量的影响。方法:采用前瞻性对照研究,选取我院2020-06/2022-06接受SMILE手术的近视散光患者54例108眼,根据随机数字表法分为A组... 目的:比较飞秒激光小切口角膜基质透镜取出术(SMILE)中不同眼角膜帽厚度对近视散光患者术后散光及早期视觉质量的影响。方法:采用前瞻性对照研究,选取我院2020-06/2022-06接受SMILE手术的近视散光患者54例108眼,根据随机数字表法分为A组、B组(各27例54眼),A组、B组角膜帽厚度设计分别为110、120μm,其余手术参数一致。比较两组患者术前及术后1 d,1 wk,1 mo的裸眼视力(UCVA)、等效球镜度(SE)、角膜硬度参数(SP-A1)、视觉质量和散光矢量分析结果等。结果:两组患者手术前后各时间点的UCVA、SE、SP-A1有时间差异(均P<0.05),术后1 d A组UCVA优于B组(P<0.05)。两组患者的散光矢量分析结果比较无差异(均P>0.05)。术后1 d A组的客观散射指数(OSI)低于B组,斯特列尔比(SR)高于B组(均P<0.05)。两组间术后调制传递函数截止频率(MTF cut off)、对比度视力、视觉症状及总体满意度、并发症发生率比较无差异(均P>0.05)。结论:110μm或120μm的角膜帽厚度在SMILE矫正近视散光方面均是安全有效的,且不影响术后的SE、散光、SP-A1以及对比度视力。110μm角膜帽厚度术后早期视力恢复更快且早期视觉质量优于120μm。 展开更多
关键词 飞秒激光小切口角膜基质透镜取出术(smile) 角膜帽厚度 近视 散光 视觉质量
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Ground-based and additional science support for SMILE 被引量:2
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作者 J.A.Carter M.Dunlop +46 位作者 C.Forsyth K.Oksavik E.Donovon A.Kavanagh S.E.Milan T.Sergienko R.C.Fear D.G.Sibeck M.Connors T.Yeoman X.Tan M.G.G.T.Taylor K.McWilliams J.Gjerloev R.Barnes D.D.Billet G.Chisham A.Dimmock M.P.Freeman D.-S.Han M.D.Hartinger S.-Y.W.Hsieh Z.-J.Hu M.K.James L.Juusola K.Kauristie E.A.Kronberg M.Lester J.Manuel J.Matzka I.McCrea Y.Miyoshi J.Rae L.Ren F.Sigernes E.Spanswick K.Sterne A.Steuwer T.Sun M.-T.Walach B.Walsh C.Wang J.Weygand J.Wild J.Yan J.Zhang Q.-H.Zhang 《Earth and Planetary Physics》 EI CSCD 2024年第1期275-298,共24页
The joint European Space Agency and Chinese Academy of Sciences Solar wind Magnetosphere Ionosphere Link Explorer(SMILE)mission will explore global dynamics of the magnetosphere under varying solar wind and interplane... The joint European Space Agency and Chinese Academy of Sciences Solar wind Magnetosphere Ionosphere Link Explorer(SMILE)mission will explore global dynamics of the magnetosphere under varying solar wind and interplanetary magnetic field conditions,and simultaneously monitor the auroral response of the Northern Hemisphere ionosphere.Combining these large-scale responses with medium and fine-scale measurements at a variety of cadences by additional ground-based and space-based instruments will enable a much greater scientific impact beyond the original goals of the SMILE mission.Here,we describe current community efforts to prepare for SMILE,and the benefits and context various experiments that have explicitly expressed support for SMILE can offer.A dedicated group of international scientists representing many different experiment types and geographical locations,the Ground-based and Additional Science Working Group,is facilitating these efforts.Preparations include constructing an online SMILE Data Fusion Facility,the discussion of particular or special modes for experiments such as coherent and incoherent scatter radar,and the consideration of particular observing strategies and spacecraft conjunctions.We anticipate growing interest and community engagement with the SMILE mission,and we welcome novel ideas and insights from the solar-terrestrial community. 展开更多
关键词 MAGNETOSPHERE IONOSPHERE magnetosphere-ionosphere coupling ground-based experimentation smile CONJUNCTIONS MISSIONS
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240 nm AlGaN-based deep ultraviolet micro-LEDs:size effect versus edge effect 被引量:2
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作者 Shunpeng Lu Jiangxiao Bai +6 位作者 Hongbo Li Ke Jiang Jianwei Ben Shanli Zhang Zi-Hui Zhang Xiaojuan Sun Dabing Li 《Journal of Semiconductors》 EI CAS CSCD 2024年第1期55-62,共8页
240 nm AlGaN-based micro-LEDs with different sizes are designed and fabricated.Then,the external quantum efficiency(EQE)and light extraction efficiency(LEE)are systematically investigated by comparing size and edge ef... 240 nm AlGaN-based micro-LEDs with different sizes are designed and fabricated.Then,the external quantum efficiency(EQE)and light extraction efficiency(LEE)are systematically investigated by comparing size and edge effects.Here,it is revealed that the peak optical output power increases by 81.83%with the size shrinking from 50.0 to 25.0μm.Thereinto,the LEE increases by 26.21%and the LEE enhancement mainly comes from the sidewall light extraction.Most notably,transversemagnetic(TM)mode light intensifies faster as the size shrinks due to the tilted mesa side-wall and Al reflector design.However,when it turns to 12.5μm sized micro-LEDs,the output power is lower than 25.0μm sized ones.The underlying mechanism is that even though protected by SiO2 passivation,the edge effect which leads to current leakage and Shockley-Read-Hall(SRH)recombination deteriorates rapidly with the size further shrinking.Moreover,the ratio of the p-contact area to mesa area is much lower,which deteriorates the p-type current spreading at the mesa edge.These findings show a role of thumb for the design of high efficiency micro-LEDs with wavelength below 250 nm,which will pave the way for wide applications of deep ultraviolet(DUV)micro-LEDs. 展开更多
关键词 ALGAN deep ultraviolet micro-LEDs light extraction efficiency size effect edge effect
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SMILE soft X-ray Imager flight model CCD370 pre-flight device characterisation 被引量:1
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作者 S.Parsons D.J.Hall +4 位作者 O.Hetherington T.W.Buggey T.Arnold M.W.J.Hubbard A.Holland 《Earth and Planetary Physics》 EI CSCD 2024年第1期25-38,共14页
Throughout the SMILE mission the satellite will be bombarded by radiation which gradually damages the focal plane devices and degrades their performance.In order to understand the changes of the CCD370s within the sof... Throughout the SMILE mission the satellite will be bombarded by radiation which gradually damages the focal plane devices and degrades their performance.In order to understand the changes of the CCD370s within the soft X-ray Imager,an initial characterisation of the devices has been carried out to give a baseline performance level.Three CCDs have been characterised,the two flight devices and the flight spa re.This has been carried out at the Open University in a bespo ke cleanroom measure ment facility.The results show that there is a cluster of bright pixels in the flight spa re which increases in size with tempe rature.However at the nominal ope rating tempe rature(-120℃) it is within the procure ment specifications.Overall,the devices meet the specifications when ope rating at -120℃ in 6 × 6 binned frame transfer science mode.The se rial charge transfer inefficiency degrades with temperature in full frame mode.However any charge losses are recovered when binning/frame transfer is implemented. 展开更多
关键词 CCD soft X-ray imager characterisation smile
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质谱中气相Smiles重排反应的研究进展
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作者 韦武智 凌琳 王昊阳 《化学试剂》 CAS 2024年第9期105-116,共12页
人名反应基于反应机理对复杂的有机化学反应进行了梳理和总结,极大地促进了有机化学研究,并方便了化学家们的交流。在质谱领域,气相人名反应的类型并不多,常见的包括麦氏重排(McL)和逆狄尔斯-阿尔德(RDA)反应等。这些广为人知的气相人... 人名反应基于反应机理对复杂的有机化学反应进行了梳理和总结,极大地促进了有机化学研究,并方便了化学家们的交流。在质谱领域,气相人名反应的类型并不多,常见的包括麦氏重排(McL)和逆狄尔斯-阿尔德(RDA)反应等。这些广为人知的气相人名反应由于具有显著的结构特异性,成为了质谱结构解析的有力工具。随着软离子化结合多级质谱技术的发展,越来越多新型的气相反应被发现和研究,其中气相Smiles重排反应因其复杂而有趣的骨架重排而备受质谱学家和化学家关注。气相Smiles重排能够引起化合物骨架的变化,导致一些意想不到的中性丢失。与凝聚相Smiles重排反应相比,气相Smiles重排反应不受五元环过渡态形式的限制,也无需碱性条件的引发。这正是气相离子反应的特点,但同时,更多可能的裂解途径也给解谱带来了挑战。系统总结了近年来报道的质谱中气相Smiles重排反应,分析了化合物结构、离子化方法以及电荷状态对气相Smiles重排反应的影响,为基于质谱中气相Smiles重排反应进行化合物结构解析,以及发现化合物在凝聚相条件下的类似反应提供了线索和信息。 展开更多
关键词 smiles重排反应 多级质谱 气相重排反应 质谱结构解析 裂解规律分析
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SMILE与ICL植入术治疗伴低度散光的高度近视患者的疗效比较
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作者 李青 杨倩 +1 位作者 岳钟 郭敬云 《国际眼科杂志》 CAS 2024年第9期1392-1396,共5页
目的:比较全飞秒激光小切口角膜基质透镜取出术(SMILE)与有晶状体眼后房型人工晶状体(ICL)植入术治疗伴低度散光的高度近视患者的疗效、安全性及视觉质量的临床效果。方法:回顾性研究。纳入2021-01/2022-01我院收治伴低度散光的高度近... 目的:比较全飞秒激光小切口角膜基质透镜取出术(SMILE)与有晶状体眼后房型人工晶状体(ICL)植入术治疗伴低度散光的高度近视患者的疗效、安全性及视觉质量的临床效果。方法:回顾性研究。纳入2021-01/2022-01我院收治伴低度散光的高度近视患者80例159眼,根据手术方式不同分为SMILE组46例91眼和ICL植入组34例68眼。比较两组患者术前,术后3、6 mo等效球镜、裸眼视力(UCVA)、最佳矫正视力(BCVA)以及角膜高阶像差、光学质量指标(SR)及有效性、安全性指数,统计手术并发症。结果:两组术后6 mo等效球镜、UCVA及BCVA均较术前提高(均P<0.05)。术后6 mo,两组患者UCVA、BCVA、等效球镜、有效性指数、安全性指数比较均无差异(均P>0.05),SMILE组患者总高阶像差、球差、彗差、垂直彗差和水平彗差的均方根值均高于ICL植入组,术后3、6 mo ICL植入组SR高于SMILE组(均P<0.05)。结论:SMILE和ICL植入术治疗伴低度散光的高度近视患者的手术效果良好,术后患者均能获得较好的术后视力和客观视觉质量,相比于SMILE,ICL植入术术后视觉质量更好。 展开更多
关键词 全飞秒激光小切口角膜基质透镜取出术(smile) 有晶状体眼后房型人工晶状体(ICL)植入术 低度散光 高度近视 疗效 安全性 视觉质量
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Engineering Strategies for Suppressing the Shuttle Effect in Lithium–Sulfur Batteries 被引量:3
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作者 Jiayi Li Li Gao +7 位作者 Fengying Pan Cheng Gong Limeng Sun Hong Gao Jinqiang Zhang Yufei Zhao Guoxiu Wang Hao Liu 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第1期187-221,共35页
Lithium–sulfur(Li–S)batteries are supposed to be one of the most potential next-generation batteries owing to their high theoretical capacity and low cost.Nevertheless,the shuttle effect of firm multi-step two-elect... Lithium–sulfur(Li–S)batteries are supposed to be one of the most potential next-generation batteries owing to their high theoretical capacity and low cost.Nevertheless,the shuttle effect of firm multi-step two-electron reaction between sulfur and lithium in liquid electrolyte makes the capacity much smaller than the theoretical value.Many methods were proposed for inhibiting the shuttle effect of polysulfide,improving corresponding redox kinetics and enhancing the integral performance of Li–S batteries.Here,we will comprehensively and systematically summarize the strategies for inhibiting the shuttle effect from all components of Li–S batteries.First,the electrochemical principles/mechanism and origin of the shuttle effect are described in detail.Moreover,the efficient strategies,including boosting the sulfur conversion rate of sulfur,confining sulfur or lithium polysulfides(LPS)within cathode host,confining LPS in the shield layer,and preventing LPS from contacting the anode,will be discussed to suppress the shuttle effect.Then,recent advances in inhibition of shuttle effect in cathode,electrolyte,separator,and anode with the aforementioned strategies have been summarized to direct the further design of efficient materials for Li–S batteries.Finally,we present prospects for inhibition of the LPS shuttle and potential development directions in Li–S batteries. 展开更多
关键词 Shuttle effect Designed strategies Li-S battery Lithium polysulfides
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