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Effects of heat treatment on the corrosion resistance of carbon steel coated with LaMgAl_(11)O_(19) thermal barrier coatings

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International Journal of Minerals,Metallurgy and Materials 2015年第10期22卷 1050-1059页

作者： liang-liang huang Hui-min Meng Li-kang liang Sen Li Jin-hui Shi Institute for Advanced Materials and Technology University of Science and Technology Beijing

LaMgAl11O19thermal barrier coatings（TBCs） were applied to carbon steels with a NiCoCrAlY bond coat by plasma spraying. The effects of heat treatment on the corrosion resistance of carbon steel coated with LaMgAl11O19TBCs were investigated in 3.5wt% Na Cl solution using polarization curves, electrochemical impedance spectroscopy（EIS）, scanning electron microscopy（SEM）, and X-ray diffraction（XRD）. The results show that a large number of cracks are found in the LaMgAl11O19TBCs after the samples are heat-treated, including some through-thickness cracks. The corrosion forms of the as-sprayed and heat-treated TBCs are uniform corrosion and pitting corrosion, respectively. The as-sprayed TBCs exhibit three EIS time constants after being immersed for less than 7 d, and then a new time constant appears because of steel substrate corrosion. When the immersion time is increased to 56 d, a Warburg impedance（W） component appears in the EIS data. The EIS data for the heat-treated TBCs exhibit only two time constants after the samples are immersed for less than 14 d, and a new time constant appears when the immersion time is increased further. The heat treatment reduces the corrosion resistance of carbon steel coated with LaMgAl11O19TBCs. The corrosion products are primarily γ-Fe OOH and Fe3O4.

关键词： thermal barrier coatings carbon steel corrosion pl

Effect of hydrogen-storage pressure on the detonation characteristics of emulsion explosives sensitized by glass microballoons

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Defence Technology（防务技术） 2022年第5期18卷 747-754页

作者： Ji-ping Chen Hong-hao Ma Yi-xin Wang liang-liang huang Zhao-wu Shen CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern MechanicsUniversity of Science and Technology of ChinaHefeiAnhuiPR China State Key Laboratory of Fire Science University of Science and Technology of ChinaHefeiAnhuiPR China

In this study,hydrogen-storage glass microballoons were introduced into emulsion explosives to improve the detonation performance of the *** effect of hydrogen-storage pressure on the detonation characteristics of emulsion explosives was systematically *** velocity experiments shows that the change of sensitizing gas and the increase of hydrogen pressure have different effects on the detonation *** experimental parameters of underwater explosion increase first and then decreases with the increase of hydrogen *** decrease of these parameters indicates that the strength of glass microballoons is the limiting factor to improve the detonation performance of hydrogen-storage emulsion *** with the traditional emulsion explosives,the maximum peak pressure of shock wave of hydrogen-storage emulsion explosives increases by 10.6%at 1.0 m and 10.2%at 1.2 m,the maximum values of shock impulse increase by 5.7%at 1.0 m and 19.4%at 1.2 *** stored hydrogen has dual effects of sensitizers and energetic additives,which can improve the energy output of emulsion explosives.

关键词： Emulsion explosives Hydrogen-storage pressure Glass microballoons Underwater explosion

Excited state biexcitons in monolayer WSe_(2)driven by vertically grown graphene nanosheets with high-density electron trapping edges

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Frontiers of physics 2023年第3期18卷 103-112页

作者： Bo Wen Da-Ning Luo Ling-Long Zhang Xiao-Lin Li Xin Wang liang-liang huang Xi Zhang Dong-Feng Diao Institute of Nanosurface Science and Engineering Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering Shenzhen UniversityShenzhen 518060China College of Physics Nanjing University of Aeronautics and AstronauticsKey Laboratory of Aerospace Information Materials and Physics(NUAA)MIITNanjing 211106China Research Center of Medical Plasma Technology Shenzhen UniversityShenzhen 518060China

Interface engineering in atomically thin transition metal dichalcogenides(TMDs)is becoming an important and powerful technique to alter their properties,enabling new optoelectronic applications and quantum *** engineering in a monolayer WSe_(2)sample via introduction of high-density edges of standing structured graphene nanosheets(GNs)is realized.A strong photoluminescence(PL)emission peak from intravalley and intervalley trions at about 750 nm is observed at the room temperature,which indicated the heavily p-type doping of the monolayer WSe_(2)/thin graphene nanosheet-embedded carbon(TGNEC)film *** also successfully triggered the emission of biexcitons(excited state biexciton)in a monolayer WSe_(2),via the electron trapping centers of edge quantum wells of a TGNEC *** PL emission of a monolayer WSe_(2)/GNEC film is quenched by capturing the photoexcited electrons to reduce the electron-hole recombination *** study can be an important benchmark for the extensive understanding of light–matter interaction in TMDs,and their dynamics.

关键词： excited state biexcitons monolayer WSe_(2) vertically graphene electron trapping edges

Research on the temperature field of a partially freezing sand barrier with groundwater seepage

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Research in Cold and Arid Regions 2017年第3期9卷 280-288页

作者： Li Yan Lao Zhi Qiang Ji liang liang huang Shang Jing Li State Key Laboratory of Nuclear Resources and Environment East China University of Technology State Key Laboratory for Geomechanics &Deep Underground Engineering China University of Mining and Technology State Key Laboratory of Frozen Soil Engineering Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences

To study the distribution characteristics and variation regularity of the temperature field during the process of seepage freezing,a simulated-freezing test with seepage of Xuzhou sand was completed by using a model test developed in-house *** means of three group freezing tests with different seepage velocities,we discovered the phenomenon of the asymmetry of the temperature field under the influence of *** temperature upstream was obviously higher than that *** temperature gradient upstream was also steeper than that *** a higher seepage velocity,the asymmetry of the temperature field is more *** asymmetry for the interface temperature profile is more strongly manifest than for the main surface temperature *** cryogenic barrier section is somewhat"heartshaped".With the increasing velocity of the seepage flow,the cooling rate of the soil *** takes much time to reach the equilibrium state of the soil *** our study,seepage flow velocities of 0 m/d,7.5 m/d,and 15 m/d showed the soilcooling rate of 4.35°C/h,4.96°C/h,and 1.72°C/h,respectively.

关键词： freezing temperature field seepage freezing soil barrier model test

A promising approach for quantifying focal stroke modeling and assessing stroke progression:optical resolution photoacoustic microscopy photothrombosis

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Neural Regeneration Research 2025年第7期20卷 2029-2037页

作者： Xiao liang Xingping Quan Xiaorui Geng Yujing huang Yonghua Zhao Lei Xi Zhen Yuan Ping Wang Bin Liu Faculty of Health Sciences University of MacaoMacao Special Administrative RegionChina Center for Cognitive and Brain Sciences University of MacaoMacao Special Administrative RegionChina Department of Biomedical Engineering Southern University of Science and TechnologyShenzhenGuangdong ProvinceChina State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoTaipaMacao Special Administrative RegionChina Department of Emergency Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina

To investigate the mechanisms underlying the onset and progression of ischemic stroke,some methods have been proposed that can simultaneously monitor and create embolisms in the animal cerebral ***,these methods often require complex systems and the effect of age on cerebral embolism has not been adequately studied,although ischemic stroke is strongly *** this study,we propose an optical-resolution photoacoustic microscopy-based visualized photothrombosis methodology to create and monitor ischemic stroke in mice simultaneously using a 532 nm pulsed *** observed the molding process in mice of different ages and presented age-dependent vascular embolism ***,we integrated optical coherence tomography angiography to investigate age-associated trends in cerebrovascular variability following a *** imaging data and quantitative analyses underscore the differential cerebrovascular responses to stroke in mice of different ages,thereby highlighting the technique's potential for evaluating cerebrovascular health and unraveling age-related mechanisms involved in ischemic strokes.

关键词： age-dependent cerebral cortex ischemic stroke mouse model optical coherence tomography angiography photoacoustic microscopy photothrombosis vascular imaging

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胸腔镜小儿肺叶切除术50例

中华胸心血管外科杂志 2017年第8期33卷 490-492页

作者：谭征李建华梁靓黄婷刘元果舒强浙江大学医学院附属儿童医院胸外科杭州310052

目的探讨胸腔镜下小儿肺叶切除手术的可行性和安全性。方法回顾分析2015年4月到2016年8月，连续50例计划实行胸腔镜下肺叶切除术患儿资料，排除叶外型隔离肺、肺大疱和肺活检病例。男35例，女15例；年龄2个月～13岁，平均（5．94±3．9... 详细信息

目的探讨胸腔镜下小儿肺叶切除手术的可行性和安全性。方法回顾分析2015年4月到2016年8月，连续50例计划实行胸腔镜下肺叶切除术患儿资料，排除叶外型隔离肺、肺大疱和肺活检病例。男35例，女15例；年龄2个月～13岁，平均（5．94±3．94）；体质量3．25—59．00b，平均（22．15±12．54）kg。其中12例产前胎儿超声确认肺部病变。反复肺炎史21例。有咯血史3例，均为叶内型隔离肺。结果46例顺利经胸腔镜下行手术。4例中转开胸，占8％（4／50），其中2例13岁和15岁左肺上叶切除患儿，术前反复肺炎，胸膜粘连；1例右肺下叶切除患儿，术中损伤右下肺动脉基底段，大出血；1例左肺下叶患儿，上下叶裂发育不良。胸腔镜手术时间40-300min，平均120min。无手术死亡，术后出血二次开胸1例，为中转开胸的病例。病变位于右肺上叶5例，右肺中叶1例，右肺下叶19例，左肺上叶7例，左肺下叶18例。术后病理提示支气管源性肺囊肿4例，细支气管肺炎伴肺气肿1例，叶内型隔离肺15例，肺囊性腺瘤样畸形30例（Ⅰ型17例，Ⅱ型13例）。术后留置胸腔引管2-3天，术后住院5～10天，平均7天。术后随访1～12个月，无复发及胸廓塌陷，剩余肺代偿良好。结论胸腔镜肺叶切除术创伤小，术后患儿恢复快。但小儿由于胸腔小，单肺困难，胸腔镜下操作需要较长的学习曲线。患儿术前的反复感染、胸膜粘连和叶裂发育不良会增加中转开胸率。

关键词：肺切除术胸腔镜检查儿童

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降阶梯方案治疗门诊婴幼儿喘息临床效果观察

中国实用医药 2017年第7期12卷 122-124页

作者：梁亮黄丽意陈婷女台山市妇幼保健院儿科 529000

目的探讨降阶梯方案治疗门诊婴幼儿喘息的临床效果。方法 128例婴幼儿喘息患儿,随机分为对照组和观察组,各64例。两组均给予退热、吸氧等对症处理,在此基础上对照组给予常规治疗,观察组应用降阶梯方案治疗。比较两组治疗前、治疗7 d后... 详细信息

目的探讨降阶梯方案治疗门诊婴幼儿喘息的临床效果。方法 128例婴幼儿喘息患儿,随机分为对照组和观察组,各64例。两组均给予退热、吸氧等对症处理,在此基础上对照组给予常规治疗,观察组应用降阶梯方案治疗。比较两组治疗前、治疗7 d后症状评分变化情况,统计两组症状消失时间及治疗7 d后总有效率。结果观察组治疗7 d后哮鸣音、喘息、咳嗽等症状评分均明显低于对照组,差异具有统计学意义(P<0.05);观察组哮鸣音、喘息、咳嗽等症状消失时间均短于对照组,差异具有统计学意义(P<0.05);治疗7 d后,观察组总有效率为90.6%,高于对照组的67.2%,差异具有统计学意义(P<0.05)。结论对婴幼儿喘息患儿应用降阶梯方案治疗疗效显著,能有效改善患儿临床症状,促进患儿康复。

关键词：降阶梯方案婴幼儿喘息疗效

Persistent alterations in gray matter in COVID-19 patients experiencing sleep disturbances:a 3-month longitudinal study

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Neural Regeneration Research 2025年第10期20卷 3013-3024页

作者： Kaixuan Zhou Gaoxiong Duan Ying Liu Bei Peng Xiaoyan Zhou Lixia Qin Lingyan liang Yichen Wei Qingping Zhang Xiaocheng Li Haixia Qin Yinqi Lai Yian Lu Yan Zhang Jiazhu huang Jinli huang Yinfei Ouyang Bolin Bin Mingming Zhao Jun Liu Jianrong Yang Demao Deng Guangxi Key Laboratory of Special Biomedicine School of MedicineGuangxi UniversityNanningGuangxi Zhuang Autonomous RegionChina Department of Radiology the People’s Hospital of Guangxi Zhuang Autonomous RegionGuangxi Academy of Medical SciencesNanningGuangxi Zhuang Autonomous RegionChina Department of Sleep Medicine the People’s Hospital of Guangxi Zhuang Autonomous RegionNanningGuangxi Zhuang Autonomous RegionChina Department of Radiology The Second Xiangya HospitalCentral South UniversityChangshaHunan ProvinceChina Guangxi Clinical Research Center for Sleep Medicine the People’s Hospital of Guangxi Zhuang Autonomous RegionNanningGuangxi Zhuang Autonomous RegionChina

Sleep disturbances are among the most prevalent neuropsychiatric symptoms in individuals who have recovered from severe acute respiratory syndrome coronavirus 2 *** studies have demonstrated abnormal brain structures in patients with sleep disturbances who have recovered from coronavirus disease 2019(COVID-19).However,neuroimaging studies on sleep disturbances caused by COVID-19 are scarce,and existing studies have primarily focused on the long-term effects of the virus,with minimal acute phase *** a result,little is known about the pathophysiology of sleep disturbances in the acute phase of *** address this issue,we designed a longitudinal study to investigate whether alterations in brain structure occur during the acute phase of infection,and verified the results using 3-month follow-up data.A total of 26 COVID-19 patients with sleep disturbances(aged 51.5±13.57 years,8 women and 18 men),27 COVID-19 patients without sleep disturbances(aged 47.33±15.98 years,9 women and 18 men),and 31 age-and gender-matched healthy controls(aged 49.19±17.51 years,9 women and 22 men)were included in this *** COVID-19 patients with sleep disturbances were included in a longitudinal *** found that COVID-19 patients with sleep disturbances exhibited brain structural changes in almost all brain *** cortical thicknesses of the left pars opercularis and left precuneus were significantly negatively correlated with Pittsburgh Sleep Quality Index ***,we observed changes in the volume of the hippocampus and its subfield regions in COVID-19 patients compared with the healthy *** 3-month follow-up data revealed indices of altered cerebral structure(cortical thickness,cortical grey matter volume,and cortical surface area)in the frontal-parietal cortex compared with the baseline in COVID-19 patients with sleep *** findings indicate that the sleep disturbances patients had altered morphology in the cortical an

关键词： brain structure cortical gray matter volume cortical surface area cortical thickness hippocampus magnetic resonance imaging Pittsburgh Sleep Quality Index severe acute respiratory syndrome coronavirus 2 infections sleep disturbances sub-cortical volume

小麦抗条锈基因Yr5、Yr9和Yr18分子标记的特异性评估

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麦类作物学报 2025年第1期45卷 45-51页

作者：孙振宇黄亮黄苗苗刘太国甘肃省农业科学院植物保护研究所甘肃兰州730070 中国农业科学院植物保护研究所植物病虫害综合治理全国重点实验室北京100193 青海大学农林科学院青海西宁810016

Yr5、Yr9(1B/1R)、Yr18基因的自身性状或连锁性状在中国小麦育种中具有重要的应用前景。本研究运用以Avocet S为背景的单基因近等基因系及其对应基因的载体品种,对Yr5基因的连锁标记STS9/10,Yr9(1B/1R)基因的分子标记AF1/4、D15、20H,Y... 详细信息

Yr5、Yr9(1B/1R)、Yr18基因的自身性状或连锁性状在中国小麦育种中具有重要的应用前景。本研究运用以Avocet S为背景的单基因近等基因系及其对应基因的载体品种,对Yr5基因的连锁标记STS9/10,Yr9(1B/1R)基因的分子标记AF1/4、D15、20H,Yr18基因的分子标记csLV34、cssfr1~cssfr5进行有效性验证。结果表明,Yr5基因的特异性分子标记STS9/10、Yr9(1B/1R)基因的特异性分子标记AF1/4、D15和20H均能够准确识别不同遗传背景材料中的相应抗性基因;Yr18基因分子标记cssfr2能够准确检测Yr18的非载体材料,并检测出Avocet S*6/Yr5、Avocet S*6/Yr24、Avocet S*6/Yr27三个材料具有Yr18的等位变异。这说明Yr5基因的连锁标记STS9/10,Yr9(1B/1R)基因的分子标记AF1/4、D15、20H能对目的基因进行有效检测,Yr18基因的几个分子标记结合使用不仅能够对目的基因进行有效检测,而且能够识别该位点的等位变异。

关键词：抗条锈基因分子标记特异性