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Ozone oxidation of 4H-SiC and flat-band voltage stability of SiC MOS capacitors

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Chinese Physics B 2022年第11期31卷 500-509页

作者： Zhi-Peng Yin sheng-sheng wei Jiao Bai wei-wei Xie Zhao-Hui Liu Fu-Wen Qin De-Jun Wang Key Laboratory of Intelligent Control and Optimization for Industrial Equipment Ministry of Education School of Control Science and Engineering Faculty of Electronic Information and Electrical EngineeringDalian University of TechnologyDalian 116024China State Key Laboratory of Materials Modification by Laser Ionand Electron Beams(Ministry of Education)Dalian University of TechnologyDalian 116024China

We investigate the effect of ozone(O_(3))oxidation of silicon carbide(SiC)on the flat-band voltage(Vfb)stability of SiC metal–oxide–semiconductor(MOS)*** SiC MOS capacitors are produced by O_(3)oxidation,and their Vfbstability under frequency variation,temperature variation,and bias temperature stress are *** ion mass spectroscopy(SIMS),atomic force microscopy(AFM),and x-ray photoelectron spectroscopy(XPS)indicate that O_(3)oxidation can adjust the element distribution near SiC/SiO_(2)interface,improve SiC/SiO_(2)interface morphology,and inhibit the formation of near-interface defects,*** addition,we elaborate the underlying mechanism through which O_(3)oxidation improves the Vfbstability of SiC MOS capacitors by using the measurement results and O_(3)oxidation kinetics.

关键词： SiC MOS capacitors ozone oxidation bias temperature instability Deal-Grove model

Characteristics of corneal aberration in patients with bilateral keratoconus and unilateral corneal Vogt’s striae

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International Journal of Ophthalmology(English edition) 2024年第12期17卷 2316-2320页

作者： sheng-sheng wei Yong Li Zhi-Qing Wu Jian-Guo Liu Jing Du Jing Li Yao-Hua Zhang Shaanxi Eye Hospital Xi’an People’s Hospital(Xi’an Fourth Hospital)Affiliated People’s Hospital of Northwest UniversityXi’an 710004Shaanxi ProvinceChina Department of Ophthalmology Hospital of Shaanxi Normal UniversityXi’an 710004Shaanxi ProvinceChina

AIM:To assess the corneal high-order aberration(HOA)and its correlation with corneal morphological parameters in patients with bilateral keratoconus(KCN)and unilateral Vogt’s ***:A total of 168 eyes of 84 patients with KCN,whose corneas had definite signs of unilateral Vogt’s striae,were *** HOA and morphological parameters were measured using Pentacam ***:The corneal morphological parameters between KCN eyes with and without Vogt’s striae were evidently different(P<0.001).The 3rd coma 90°,4th spherical aberration,5th coma 90°,root-mean-square(RMS)(total),and RMS(HOA)in the front,back surfaces and total cornea in KCN eyes with Vogt’s striae were significantly higher than those in KCN eyes without Vogt’s striae(P<0.001).In KCN eyes with Vogt’s striae,the 3rd coma 90°and 4th spherical aberration in the front surface and total cornea were negatively correlated with flat keratometry value(K1),steep keratometry value(K2),mean keratometry value(Km),maximum keratometry value(Kmax),anterior corneal elevation(ACE),and posterior corneal elevation(PCE;P<0.05).The 3rd coma 90°,4th spherical aberration in back surface and RMS(total),RMS(HOA)in the front,back surfaces,total cornea were positively correlated with K1,K2,Km,Kmax,ACE,and PCE(P<0.05).CONCLUSION:Corneal HOA especially vertical coma and spherical aberration may increase when Vogt’s striae appeared in KCN *** scale of increase is significantly related with changes in corneal shapes.

关键词： keratoconus cornea corneal aberration corneal morphological Vogt’s striae

Boosting Oxygen Evolution Reaction Performance on NiFe‑Based Catalysts Through d‑Orbital Hybridization

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Nano-Micro Letters 2025年第1期17卷 281-292页

作者： Xing Wang wei Pi sheng Hu Haifeng Bao Na Yao wei Luo State Key Laboratory of New Textile Materials and Advanced Processing Technology Key Laboratory of New Textile Materials and Applications of Hubei ProvinceSchool of Materials Science and EngineeringWuhan Textile UniversityWuhan 430200People’s Republic of China College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072People’s Republic of China

Anion-exchange membrane water electrolyzers(AEMWEs)for green hydrogen production have received intensive attention due to their feasibility of using earth-abundant NiFe-based *** introducing a third metal into NiFe-based catalysts to construct asymmetrical M-NiFe units,the d-orbital and electronic structures can be adjusted,which is an important strategy to achieve sufficient oxygen evolution reaction(OER)performance in ***,the ternary NiFeM(M:La,Mo)catalysts featured with distinct M-NiFe units and varying d-orbitals are reported in this *** and theoretical calculation results reveal that the doping of La leads to optimized hybridization between d orbital in NiFeM and 2p in oxygen,resulting in enhanced adsorption strength of oxygen intermediates,and reduced rate-determining step energy barrier,which is responsible for the enhanced OER *** critically,the obtained NiFeLa catalyst only requires 1.58 V to reach 1 A cm^(−2) in an anion exchange membrane electrolyzer and demonstrates excellent long-term stability of up to 600 h.

关键词： NiFe-based catalysts d-orbital coupling Oxygen evolution reaction Anion exchange membrane electrolyzer

Passive activity enhances residual control ability in patients with complete spinal cord injury

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Neural Regeneration Research 2025年第8期20卷 2337-2347页

作者： Yanqing Xiao Mingming Gao Zejia He Jia Zheng Hongming Bai Jia-sheng Rao Guiyun Song wei Song Xiaoguang Li Beijing Key Laboratory for Biomaterials and Neural Regeneration Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringBeihang UniversityBeijingChina Department of Rehabilitation Evaluation China Rehabilitation Research CenterBeijingChina Cardiac Center Beijing Children’s HospitalCapital Medical UniversityBeijingChina The State Key Laboratory of Virtual Reality Technology and Systems Beihang UniversityBeijingChina Department of Rehabilitation Engineering China Rehabilitation Science InstituteBeijingChina

Patients with complete spinal cord injury retain the potential for volitional muscle activity in muscles located below the spinal injury ***,because of prolonged inactivity,initial attempts to activate these muscles may not effectively engage any of the remaining neurons in the descending pathway.A previous study unexpectedly found that a brief clinical round of passive activity significantly increased volitional muscle activation,as measured by surface *** this study,we further explored the effect of passive activity on surface electromyographic signals during volitional control tasks among individuals with complete spinal cord *** patients with chronic complete thoracic spinal cord injury were *** electromyography data from eight major leg muscles were acquired and compared before and after the passive activity *** results indicated that the passive activity led to an increased number of activated volitional muscles and an increased frequency of *** the cumulative root mean square of surface electromyography amplitude for volitional control of movement showed a slight increase after passive activity,the difference was not statistically *** findings suggest that brief passive activity may enhance the ability to initiate volitional muscle activity during surface electromyography tasks and underscore the potential of passive activity for improving residual motor control among patients with motor complete spinal cord injury.

关键词： complete spinal cord injury cycle training epidural electrical stimulation motor training passive activity physiological state spinal cord circuit surface electromyography volitional control task

心力衰竭患儿血浆血管活性肠肽和胰高血糖素的变化

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实用儿科临床杂志 2004年第11期19卷 936-937页

作者：庞玉生何伟生韦丹广西民族医院儿科广西南宁530001 广西医科大学第一附属医院儿科广西南宁530021

目的探讨心力衰竭(CHF)患儿血浆血管活性肠肽(VIP)及胰高血糖素(Glu)变化及其临床意义.方法CHF患儿40例,男23例,女17例;年龄0.5～7.8岁.其中心功能Ⅰ级15例,心功能Ⅱ～Ⅳ级25例.应用放射免疫法测定患儿血浆VIP和Glu水平,以年龄性别相匹... 详细信息

目的探讨心力衰竭(CHF)患儿血浆血管活性肠肽(VIP)及胰高血糖素(Glu)变化及其临床意义.方法CHF患儿40例,男23例,女17例;年龄0.5～7.8岁.其中心功能Ⅰ级15例,心功能Ⅱ～Ⅳ级25例.应用放射免疫法测定患儿血浆VIP和Glu水平,以年龄性别相匹配且无CHF健康体检者23例为正常对照.结果CHF患儿血浆VIP明显高于正常组[(43.22±5.48)ng/Lvs(32.24±4.46)ng/L P＜0.05];CHF患儿血浆Glu亦明显高于正常组[(298.23±123.43)ng/Lvs(224.67±89.44)ng/L P＜0.05].应用洋地黄治疗,心功能控制后血浆VIP水平较治疗前明显下降[(34.78±5.43)ng/Lvs(43.22±5.48)ng/L P＜0.05],Glu水平亦较治疗前明显下降[(236.22±98.57)ng/Lvs(298.23±123.43)ng/L P＜0.05].结论CHF患儿血浆VIP、Glu水平明显升高,VIP、Glu参与CHF的病理生理过程.

关键词：血管活性肠肽胰高血糖素心力衰竭放射免疫

Relationship between parenting stress and behavioral and emotional problems in preschool children: A mediation effect analysis

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World Journal of Psychiatry 2025年第1期15卷 128-136页

作者： Zhi-wei Fu Yue-Jing Li Ran Yu Rui-Qing Guo Li-Xia Gao sheng-Xia Zhao Department of Children's Health Shijiazhuang Maternity and Child Healthcare HospitalShijiazhuang 050000Hebei ProvinceChina

BACKGROUND Emotional reactions,such as anxiety,irritability,and aggressive behavior,have attracted clinical attention as behavioral and emotional problems in preschool-age *** 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 *** We use convenience sampling to select 258 preschool children in the physical examination center of our hospital from October 2021 to September *** children and their parents were evaluated using a questionnaire ***'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 *** 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 *** 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.

关键词： Preschool children Parenting stress Children's behavioral and emotional problems Family rearing Mediating effect

Hemoglobin integrated red blood cell membrane-coated metalorganic framework nano-platform for improving the self-adaptive blood glucose management

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Nano Research 2025年第1期18卷 618-627页

作者： Shuai Wu Li Zhu sheng Ni Xiong Zhao Meng Yan Yuan Zhong Karissa Kusuma Yi Liang Kaiwen Bao Kai Qu Xian Qin Kun Zhang Wuquan Deng Da Sun wei Wu Key Laboratory of Biorheological Science and Technology Ministry of EducationCollege of BioengineeringChongqing UniversityChongqing 400044China Chongqing University Three Gorges Hospital Chongqing Municipality Clinical Research Center for Endocrinology and Metabolic DiseasesChongqing 404000China Institute of Life Sciences&Biomedical Collaborative Innovation Center of Zhejiang Province Wenzhou UniversityWenzhou 325035China Department of Endocrinology School of MedicineChongqing Emergency Medical CenterChongqing University Central HospitalChongqing 400014China

Diabetes,a prevalent chronic metabolic disorder,often leads to severe ***,existing treatment methods may pose life-threatening risks due to poor patient compliance and inaccurate dosing of subcutaneous insulin ***,a biomimetic red blood cell(RBC)membrane-coated glucose-responsive nanoplatform is developed for controlling insulin *** nanoplatforms with RBC membrane can prolong the half-life of nano-formulation in vivo mediated by the biomimetic immune ***,the cascade catalytic effect of glucose oxidase(GOx)encapsulated in metal-organic frameworks(MOFs)and hemoglobin(Hb)in the RBC membrane are able to not only facilitate glucose-responsive insulin release,but also eliminate the detrimental by-product hydrogen peroxide(H_(2)O_(2))resulting from the Hb mediated H_(2)O_(2)*** in vitro and in vivo studies have demonstrated the favorable glucose-responsive performances of this advanced nano-platform with a single intravenous injection maintaining blood glucose balance in Type 1 Diabetes(T1D)mice for an extended duration without the hypoglycemia ***,this biomimetic insulin delivery system is poised to function as a strategy for the intravenous insulin administration,offering a promising drug candidate for the self-adaptive long-term T1D treatment.

关键词： glucose-responsive metal-organic frameworks red blood cell membrane insulin delivery glucose oxidase hemoglobin

飞秒激光制瓣LASIK手术后角膜生物力学变化研究（英文）

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国际眼科杂志 2017年第2期17卷 195-199页

作者：李晶魏升升万雅群李勇李娟杜婧刘建国陕西省西安市第四医院眼科激光视力矫正中心 710004

目的:应用可视化角膜生物力学分析仪(Corvis ST)及眼反应分析仪(ORA)评估飞秒激光制瓣准分子激光原位角膜磨镶术(laser in situ keratomileusis,LASIK)术后角膜生物力学变化,并分析与其他参数的相关性。方法:收集63例飞秒制瓣LASIK手术... 详细信息

目的:应用可视化角膜生物力学分析仪(Corvis ST)及眼反应分析仪(ORA)评估飞秒激光制瓣准分子激光原位角膜磨镶术(laser in situ keratomileusis,LASIK)术后角膜生物力学变化,并分析与其他参数的相关性。方法:收集63例飞秒制瓣LASIK手术患者,所有收集对象采用右眼数据进行分析。角膜生物力学测量仪器应用可视化角膜生物力学分析仪Corvis ST及眼反应分析仪ORA,手术前及手术后1mo进行生物力学数据采集分析。配对t检验或Mann-Whitney U检验进行手术前后生物力学对比分析。Pearson或Spearman统计学方法进行相关性分析。结果:与FS-LASIK手术前相比,手术后1stA-time,Vin,2ndA length,Vout以及Radius下降,有统计学差异(P=0.00,P=0.00,P=0.00,P=0.00,P=0.00)。2ndA-time,DA以及PD手术后增加,有统计学差异(P=0.00,P=0.00,P=0.00)。1stA length以及HC time手术后改变不明显,无统计学差异(P=0.96,P=0.08)。与FS-LASIK手术前相比,手术后CH,CRF下降,有统计学差异(P=0.00,P=0.00)。手术后1stA-time,2ndA-time,DA and Radius变化量与手术前角膜中央厚度有明显相关性(P=0.01,P=0.04,P=0.03,P=0.01)。结论:飞秒激光LASIK手术后角膜生物力学参数有较明显改变,可通过Corvis ST及ORA生物力学参数计算得出相应变化,手术后生物力学参数变化与角膜厚度相关性明显。

关键词：近视角膜生物力学飞秒激光准分子激光原位角膜磨镶术可视化角膜生物力学分析仪

跨上皮角膜胶原交联手术治疗进展期圆锥角膜的疗效

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国际眼科杂志 2021年第4期21卷 675-679页

作者：魏升升李勇刘建国张耀花蔡艳杜婧万雅群李晶中国陕西省西安市人民医院西安市第四医院眼屈光中心 710000

目的:分析跨上皮角膜胶原交联手术治疗进展期圆锥角膜后1a的疗效并讨论其临床意义。方法:收集2017-01/2018-12于我院进行快速跨上皮角膜胶原交联手术的进展期圆锥角膜患者45例48眼,术后随访1a,分析手术前后视力、角膜最薄点厚度、角膜... 详细信息

目的:分析跨上皮角膜胶原交联手术治疗进展期圆锥角膜后1a的疗效并讨论其临床意义。方法:收集2017-01/2018-12于我院进行快速跨上皮角膜胶原交联手术的进展期圆锥角膜患者45例48眼,术后随访1a,分析手术前后视力、角膜最薄点厚度、角膜内皮细胞计数、角膜交联线深度、角膜前表面曲率Km值及角膜生物力学参数等变化情况。结果:与术前比较,本组患者术后裸眼视力明显改善(P0.05),术后6mo,1a角膜前表面曲率Km值(48.54±2.57、48.77±2.29D)均显著下降,角膜生物力学参数第1次压平宽度(1.52±0.21、1.57±0.22mm)均显著降低(P<0.05),第2次压平速度绝对值(0.82±0.09、0.82±0.18m/s)均显著增加(P<0.05)。结论:快速跨上皮角膜胶原交联手术治疗进展期圆锥角膜对裸眼视力有明显改善,术后角膜生物力学也有改善,但最佳矫正视力改善不明显。

关键词：圆锥角膜胶原交联手术裸眼视力最佳矫正视力角膜生物力学