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经皮椎体后凸成形术对骨质疏松性椎体压缩性骨折患者脊柱-骨盆矢状面参数及继发邻椎骨折的影响

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川北医学院学报 2024年第5期39卷 642-645页

作者：张弛吴海龙张帅石家庄市人民医院骨科河北石家庄050000

目的:经皮椎体后凸成形术(PKP)对骨质疏松性椎体压缩性骨折(OVCF)患者脊柱-骨盆矢状面参数及继发邻椎骨折的影响。方法:选取112例OVCF患者为研究对象,根据手术方式不同分为PVP组[椎体成形术(PVP)治疗]和PKP组(PKP治疗),每组各56例。比... 详细信息

目的:经皮椎体后凸成形术(PKP)对骨质疏松性椎体压缩性骨折(OVCF)患者脊柱-骨盆矢状面参数及继发邻椎骨折的影响。方法:选取112例OVCF患者为研究对象,根据手术方式不同分为PVP组[椎体成形术(PVP)治疗]和PKP组(PKP治疗),每组各56例。比较两组患者围手术期指标(骨水泥量、手术时间及住院时间)、并发症(骨水泥渗漏、术后感染)发生情况、术前及术后6个月疼痛程度[视觉模拟疼痛量表(VAS)评分]、日常生活功能障碍[功能障碍指数问卷表(ODI)评分]、影像学参数[胸椎后凸角(TK)、骨盆倾斜角(PT)、腰椎前凸角(LL)、骶骨倾斜角(SS)、骨盆入射角(PI)、脊柱骶骨角(SSA)]及继发骨折情况。结果:PKP组患者使用骨水泥量、手术时间高于PVP组(P0.05)。术后7 d、6个月,两组患者VAS评分、ODI评分均逐渐降低(P0.05)。结论:相较于PVP,PKP治疗OVCF手术时间较长,但可有效减轻患者术后疼痛,改善术后日常活动功能障碍,有利于改善脊柱矢状面平衡,值得临床推广。

关键词：骨质疏松性椎体压缩性骨折经皮椎体后凸成形术经皮椎体成形术脊柱-骨盆矢状面继发骨折 Oswestry功能障碍指数

ITO负载单原子钇吸附NO和CO的第一性原理研究

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原子与分子物理学报 2024年第6期41卷 39-45页

作者：曹宇吴海龙邱辰张立志王泽瑞钟山周晓龙梧州学院机械与资源工程学院梧州543002 昆明理工大学材料科学与工程学院昆明650093 梧州风光能源装备工程技术研究中心梧州543002

基于密度泛函理论,对氧化铟锡(Indium Tin Oxide,ITO)表面负载单原子Y模型的表面性能进行了第一性原理计算.根据表面能计算结果可知,单原子Y最稳定负载位置为空位(H),即确定了ITO负载单原子钇(Single-atom Y supported on ITO,Y/ITO)稳... 详细信息

基于密度泛函理论,对氧化铟锡(Indium Tin Oxide,ITO)表面负载单原子Y模型的表面性能进行了第一性原理计算.根据表面能计算结果可知,单原子Y最稳定负载位置为空位(H),即确定了ITO负载单原子钇(Single-atom Y supported on ITO,Y/ITO)稳定模型.对ITO和Y/ITO表面吸附气体分子(NO和CO)模型的吸附性能进行了第一性原理计算.根据对比ITO和Y/ITO表面的吸附能和态密度计算结果可知,单原子钇负载提高了ITO表面的稳定性和吸附性能.根据对比Y/ITO表面吸附NO和CO气体分子的吸附能和态密度计算结果可知,NO和CO气体分子吸附均为自发行为,过程放热.且NO气体分子更容易吸附在Y/ITO表面,即Y/ITO对NO气体分子更敏感.

关键词： NO CO 单原子钇吸附第一性原理 ITO

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Y掺杂空位石墨烯对NO及CO气体表面吸附的第一性原理研究

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原子与分子物理学报 2024年第1期41卷 64-70页

作者：黎显俊吴海龙曹宇胡梦晗刘莹王哲英周晓龙梧州学院机械与资源工程学院梧州543002 江西理工大学材料冶金化学学部赣州341000 昆明理工大学材料科学与工程学院昆明650093

基于第一性原理的计算方法,建立了本征石墨烯、空位石墨烯及钇(Y)掺杂空位石墨烯模型,并计算了CO、NO在三类石墨烯表面的吸附过程.从表面能、吸附结构、吸附能和态密度四个方面进行分析讨论,研究掺杂Y对CO、NO气体吸附性能的影响.结果表... 详细信息

基于第一性原理的计算方法,建立了本征石墨烯、空位石墨烯及钇(Y)掺杂空位石墨烯模型,并计算了CO、NO在三类石墨烯表面的吸附过程.从表面能、吸附结构、吸附能和态密度四个方面进行分析讨论,研究掺杂Y对CO、NO气体吸附性能的影响.结果表明:CO、NO与本征石墨烯之间的吸附为弱的物理吸附,掺杂Y后增强了材料表面对CO、NO的吸附效果,最大吸附能分别为7.414 eV、6.702 eV,属于化学吸附;掺杂Y使空位石墨烯费米能级附近有了更多的活跃电子,其吸附NO后体系由半金属转变为金属特性,该特性能为开发更加优良的石墨烯气敏材料提供理论支持.

关键词：石墨烯空位钇掺杂吸附第一性原理

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基于样线法及红外相机技术的安徽输电线路鸟类活动规律初步研究

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安徽师范大学学报（自然科学版） 2024年第3期47卷 241-245,254页

作者：杨友情张旭毛鸣虎章五九刘俊龙吴海龙国网安徽电力有限公司池州供电公司安徽池州247100 国网安徽省电力公司芜湖供电公司安徽芜湖241000 安徽师范大学生态与环境学院安徽芜湖241000

近年来,在输电线路附近活动的鸟类日益增多,由此引发的输电线路故障也常被报道,研究输电线路上鸟类的活动规律对于保障输电线路运行的安全性具有重要意义。为探究输电线路上鸟类的活动规律,本研究采用样线法对安徽输电线路沿线附近鸟类... 详细信息

近年来,在输电线路附近活动的鸟类日益增多,由此引发的输电线路故障也常被报道,研究输电线路上鸟类的活动规律对于保障输电线路运行的安全性具有重要意义。为探究输电线路上鸟类的活动规律,本研究采用样线法对安徽输电线路沿线附近鸟类进行了调查,并结合红外相机技术,系统调查和分析了五处高压线路杆塔上鸟类的活动情况。调查结果显示:样线法调查到的输电线路沿线活动鸟类共计18目46科135种,主要以小型鸟居多,迁徙季节有大型侯鸟类。常见鸟类有喜鹊、麻雀、白头鹎、丝光椋鸟、八哥、山斑鸠、珠颈斑鸠等。在输电线路杆塔上做巢的高危鸟类有黑翅鸢、红隼、八哥、灰椋鸟、黑领椋鸟、喜鹊。红外相机拍摄到的鸟类共11种,其中相对丰富度最高的3种鸟类依次是喜鹊、八哥和乌鸫。鸟类的日活动时间段大致在5:00—19:00,活动峰值在7:00—9:00和15:00—17:00时间段,13:00附近出现活动低谷。本研究可为输电线路鸟类安全防护策略和技术方案的制定提供一定的科学依据。

关键词：涉鸟故障红外相机技术日活动节律鸟类

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Optical coherence tomography findings in chronic progressive external ophthalmoplegia

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Chinese Medical Journal 2019年第10期132卷 1202-1207页

作者： Yuan wu Lei Kang hai-long wu Yue Hou Zhao-Xia Wang Department of Ophthalmology Peking University First Hospital Beijing 100034 China Department of Neurology Peking University First Hospital Beijing 100034 China

Background: Chronic progressive external ophthalmoplegia (CPEO) is a mitochondrial encephalomyopathy caused by multiple mtDNA abnormalities. There is little information about the changes of ocular fundus with CPEO. The aim of this work was to measure and evaluate changes in the macular retinal thickness and optic nerve head in patients with CPEO using spectral-domain optical coherence tomography and to compare the findings with those of healthy individuals. Methods: Totally, 18 CPEO patients were enrolled in this study. Healthy volunteers matched for gender, age, and diopter settings were included as a control group. The retinal thickness of macular central fovea, inner and outer retinal layer thickness of perifoveal macular, optic nerve head parameters, and peripapillay retinal nerve fiber layer thickness (pRNFLT) for all included cases were measured using spectral-domain optical coherence tomography. A paired t test was used to compare the differences in the studied parameters between the two groups. The correlations between macular retinal thickness, pRNFLT, disease duration, and age of onset were also analyzed. Results: Among the macular parameters, retinal thickness of macular central fovea (t=—2.135, P < 0.05) and outer retinal layer thickness (t =—1.994, P < 0.05) of patients in the CPEO group were statistically significant lower than those of patients in the normal control group. For the optic nerve head parameters, the patients in the CPEO group showed a larger rim volume (t =—2.499, P < 0.05) and nerve head volume (t =—2.103, P < 0.05). The overall pRNFLT of patients in the CPEO group was statistically significant lower than that of patients in the control group (t =—4.125, P < 0.05). The comparison of pRNFLT in eight sectors showed that the pRNFLT of patients in the CPEO group was statistically significant lower than that of the control group mainly in the inferior and temporal sectors. The degree of pRNFL defect negatively correlated with the disease dur

关键词： Optical coherence tomography Chronic progressive external ophthalmoplegia Retina Nerve fiber layer

The RFI Fast Mitigation Algorithm Based on Block LMS Filter

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Research in Astronomy and Astrophysics 2024年第1期24卷 265-272页

作者： Han wu hai-long Zhang Ya-Zhou Zhang Jie Wang Xu Du Ting Zhang Xin-Chen Ye Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Radio Astronomy Chinese Academy of SciencesNanjing 210008China National Astronomical Data Center Beijing 100101China

The radio telescope possesses high sensitivity and strong signal collection *** receiving celestial radiation signals,it also captures Radio Frequency Interferences(RFIs)introduced by human ***,as signals originating from sources other than the astronomical targets,significantly impacts the quality of astronomical *** paper presents an RFI fast mitigation algorithm based on block Least Mean Square(LMS)*** enhances the traditional adaptive LMS filter by grouping L adjacent time-sampled points into one block and applying the same filter coefficients for filtering within each *** transformation reduces multiplication calculations and enhances algorithm efficiency by leveraging the time-domain convolution *** algorithm is tested using baseband data from the Parkes 64 m radio telescope's pulsar observations and simulated *** results confirm the algorithm's effectiveness,as the pulsar profile after RFI mitigation closely matches the original pulsar profile.

关键词： methods:data analysis techniques:interferometric (stars:)pulsars:individual(J0437-4715)

Effects of different orthokeratology lens designs on slowing axial length elongation in children with myopia

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International Journal of Ophthalmology(English edition) 2024年第10期17卷 1843-1849页

作者： hai-long Ni Xiang Chen Du-Ya Chen Pei-Ke Hu Zhi-Yi wu Eye Center the Second Affiliated Hospital of Zhejiang University School of MedicineHangzhou 310009Zhejiang ProvinceChina

AIM:To elucidate whether differences exist in the impact on retarding the elongation of axial length(AL)among children with myopia when utilizing orthokeratology(ortho-k)lenses employing the corneal refractive therapy(CRT)design versus those employing the vision shaping treatment(VST)***:This retrospective clinical trial aimed to collect and analyze AL data from individuals who wore ortho-k lenses for three years.A total of 654 subjects were enrolled and prescribed one of the three specific brands of ortho-k lenses:CRT,Euclid,and *** study’s primary focus was to compare the rates of AL elongation and myopic progression across these three brands of ortho-k ***:In the 3-year follow-up,the AL elongation exhibited variations of 0.73±0.36 mm in the CRT lens group,0.59±0.37 mm in the Euclid lens group,and 0.63±0.38 mm in the Mouldway lens group.A noteworthy disparity emerged between the CRT and Mouldway groups(Plongation.

关键词： myopia orthokeratology design axial length

Lightweight,Strong and High Heat-Resistant Poly(lactide acid)Foams via Microcellular Injection Molding with Self-Assembly Nucleating Agent

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Chinese Journal of Polymer Science 2024年第6期42卷 739-750页

作者： Xiao-Hu Bing Wen-Yu Ma Ming-Hui wu Peng Gao Xiao Zhou hai-Bin Luo long Wang Wen-Ge Zheng School of materials Science and Engineering Shanghai UniversityShanghai200444China Ningbo Key Lab of Polymer Materials Ningbo Institute of Material Technology and EngineeringChinese Academy of SciencesNingbo315201China University of Chinese Academy of Sciences Beijing100049China

Poly(lactide acid)(PLA)foams have shown considerable promise as eco-friendly alternatives to nondegradable plastic foams,such as polystyrene(PS)***,PLA foam typically suffers from low heat-resistance and poor cellular structure stemming from its inherent slow crystallization rate and low melt *** this study,a high-performance PLA foam with well-defined cell morphology,exceptional strength and enhanced heat-resistance was successfully fabricated via a core-back microcellular injection molding(MIM)*** scanning calorimetry(DSC)results revealed that the added hydrazine-based nucleating agent(HNA)significantly increased the crystallization temperature and accelerated the crystallization process of ***,the addition of a 1.5 wt%of HNA led to a significant reduction in PLA’s cell size,from 43.5µm to 2.87µm,and a remarkable increase in cell density,from 1.08×10^(7)cells/cm^(3)to 2.15×10^(10)cells/cm^(3).This enhancement resulted in a final crystallinity of approximately 55.7%for the PLA blend foam,a marked improvement compared to the pure PLA ***,at 1.5 wt%HNA concentration,the tensile strength and tensile toughness of PLA blend foams demonstrated remarkable improvements of 136%and 463%,***,the Vicat softening temperature of PLA blend foam increased significantly to 134.8°C,whereas the pure PLA foam exhibited only about 59.7℃.These findings underscore the potential for the preparation of lightweight injection-molded PLA foam with enhanced toughness and heat-resistance,which offers a viable approach for the production of high-performance PLA foams suitable for large-scale applications.

关键词： Poly(lactide acid) Nucleating agent Microcellular injection molding Heat-resistance Toughness

Nuclei-rich galvanizing strategy for suppressing zinc dendrite growth

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Rare Metals 2024年第8期43卷 4016-4018页

作者： hai-Xia wu Kai-Lu Guo College of Chemistry and Chemical Engineering Henan Key Laboratory of Function-Oriented Porous MaterialsLuoyang Normal UniversityLuoyang 471934China

The uncontrolled growth of zinc dendrites on zinc anode hinders the application of zinc ion *** solve this problem,Lu's group proposed a nuclei-rich galvanizing strategy for suppressing the zinc dendrite *** allows the nuclei-rich zinc electrode to cycle steadily for1200 h and have a high Coulombic efficiency of 99.7%at15 mA·cm^(-2)with a deposited amount of 10 mAh·cm^(-2).Moreover,the Zn-MnO_(2) battery with a low N/P ratio of 1.9exhibited sustained cycling life.

关键词： cycling sustained battery