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Journal of materials Science & Technology 2023年第6期137卷 184-192页

作者： haibin ma Xuejing Yang Zhili Wang Qing Jiang Key Laboratory of Automobile materials Ministry of Educationand School of Materials Science and EngineeringJilin UniversityChangchun 130022China

The design of high-performance electrocatalysts for alkaline water splitting is of significant importance for the development of a sustainable hydrogen economy.Herein,heterostructured Co_(3)Mo nanoparti-cles/porous CoMoO_(3)nanosheets(Co_(3)Mo/CoMoO_(3)NPSs)were constructed for alkaline water splitting by annealing CoMoO x nanosheets under controlled atmospheres.Thanks to its interfacial electronic structure and increased electrochemical active area,Co_(3)Mo/CoMoO_(3)NPSs exhibit impressive hydrogen evolution reaction(HER)activity with an overpotential of 334 mV at 1000 ma cm^(-2) and a Tafel slope of 46.4 mV per decade in 1.0 M KOH,which outperforms Pt/C catalyst(621 mV and 74.7 mV per decade).Density functional theory calculations illustrate the electron transfer from Co_(3)Mo to CoMoO_(3)at the interfaces,where electron accumulation on CoMoO_(3)favors the dissociation of H_(2)O molecule,and electron-deficient Co atoms in Co_(3)Mo have optimized H∗absorption energy for HER.The Co_(3)Mo/CoMoO_(3)NPSs also exhibit higher oxygen evolution reaction activity than the RuO_(2)catalyst.Moreover,the water electrolyzer us-ing Co_(3)Mo/CoMoO_(3)NPSs as both cathode and anode only requires 1.59 V to deliver a current density of 100 ma cm^(-2)in 1.0 M KOH,which outperforms benchmark Pt/C||RuO_(2)electrodes couple with 1.69 V to reach the same current density,providing great potential for large-scale applications.

关键词： Interface engineering Heterostructures Interfacial electronic structure Hydrogen evolution reaction Overall water splitting

Effect of Silicon and Aluminum Addition on Corrosion Behavior of ODS Iron-Based Alloys in Liquid Lead–Bismuth Eutectic

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Acta Metallurgica Sinica(English Letters) 2023年第5期36卷 732-744页

作者： Jing Li Xiaochen Zhang haibin ma Liangyin Xiong Shi Liu Qisen Ren Zhengzheng Pang Key Laboratory of Nuclear materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang110016China Shi-Changxu Innovation Center for Advanced materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of materials Science and Engineering University of Science and Technology of ChinaShenyang110016China Nuclear Fuel and materials Department China Nuclear Power Technology Research InstituteShenzhen518026China

The long-term corrosion behaviors of four variants of oxide dispersion strengthened(ODS)iron-based alloys in the stagnant oxygen-saturated lead–bismuth eutectic(LBE)at 550℃ were studied herein.The effects of silicon and aluminum content on the thickness,morphology and composition of the oxide scale were explored with the aid of X-ray diffraction(XRD),scanning electron microscopy(SEM),electron probe micro-analyzer(EPma)and X-ray photoelectron spectroscopy(XPS).The addition of 1.5 wt%silicon is not able to contribute to forming a protective external silicon oxide film on the surface of aluminum-free ODS iron-based alloy,while the addition of aluminum promotes the formation of a thin and continuous alumina oxide scale.In the meantime,an appropriate amount of silicon becomes the heterogeneous nucleation site for alumina during the initial stage of oxidation,giving rise to the rapid formation of a protective alumina scale.However,excessive silicon has a negative impact on the formation of continuous alumina scale,because it may compete with aluminum to absorb more oxygen.The result of oxidation kinetics in ODS iron-based alloy shows that the parabolic rate constant of the alumina oxide scale is 3–4 orders of magnitude lower than that of the scale mainly composed of iron and chromium oxide.

关键词： Pb-Bi corrosion Oxide dispersion strengthened(ODS)ferritic alloy Silicon and aluminum addition Oxide scale

Novel defined N7-methylguanosine modification-related lncRNAs for predicting the prognosis of laryngeal squamous cell carcinoma

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生物细胞(英文) 2023年第9期47卷 1965-1975页

作者： ZHAOXU YAO haibin ma LIN LIU QIAN ZHAO LONGCHAO QIN XUEYAN REN CHUANJUN WU KAILI SUN Department of Otolaryngology Handan Central HospitalHandan056001China

Objective:Through integrated bioinformatics analysis,the goal of this work was to find new,characterised N7-methylguanosine modification-related long non-coding RNAs(m7G-lncRNAs)that might be used to predict the prognosis of laryngeal squamous cell carcinoma(LSCC).Methods:The clinical data and LSCC gene expression data for the current investigation were initially retrieved from the TCGA database&sanitised.Then,using co-expression analysis of m7G-associated mRNAs&lncRNAs&differential expression analysis(DEA)among LSCC&normal sample categories,we discovered lncRNAs that were connected to m7G.The prognosis prediction model was built for the training category using univariate&multivariate COX regression&LASSO regression analyses,&the model’s efficacy was checked against the test category data.In addition,we conducted DEA of prognostic m7G-lncRNAs among LSCC&normal sample categories&compiled a list of co-expression networks&the structure of prognosis m7G-lncRNAs.To compare the prognoses for individuals with LSCC in the high-&low-risk categories in the prognosis prediction model,survival and risk assessments were also carried out.Finally,we created a nomogram to accurately forecast the outcomes of LSCC patients&created receiver operating characteristic(ROC)curves to assess the prognosis prediction model’s predictive capability.Results:Using co-expression network analysis&differential expression analysis,we discovered 774 m7G-lncRNAs and 551 DEm7G-lncRNAs,respectively.We then constructed a prognosis prediction model for six m7G-lncRNAs(FLG−AS1,RHOA−IT1,AC020913.3,AC027307.2,AC010973.2 and AC010789.1),identified 32 DEPm7G-lncRNAs,analyzed the correlation between 32 DEPm7G-lncRNAs and 13 DEPm7G-mRNAs,and performed survival analyses and risk analyses of the prognosis prediction model to assess the prognostic performance of LSCC patients.By displaying ROC curves and a nomogram,we finally checked the prognosis prediction model's accuracy.Conclusion:By creating novel predictive lncRNA signatures for clinical diagnosis&therapy

关键词： N7-methylguanosine modification Prognostic lncRNAs signatures Prognosis prediction model Laryngeal squamous cell carcinoma

Anti-Jamming Algorithm Based on Spatial Blind Search for Global Navigation Satellite System Receiver

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Journal of Beijing Institute of Technology 2020年第1期29卷 103-109页

作者： Jining Feng Xiaobo Yang haibin ma Jun Wang School of Technology Hebei Normal UniversityShijiazhuang 050031China Department of Electronic Engineering Shijiazhuang Vocational and Technical CollegeShijiazhuang 050081China School of Electronics and Information Engineering Beijing Jiaotong UniversityBeijing 100044China

A novel subspace projection anti-jamming algorithm based on spatial blind search is proposed,which uses multiple single-constrained subspace projection parallel filters.If the direction of arrival(DOA)of a satellite signal is unknown,the traditional subspace projection anti-jamming algorithm cannot form the correct beam pointing.To overcome the problem of the traditional subspace projection algorithm,multiple single-constrained subspace projection parallel filters are used.Every single-constrained anti-jamming subspace projection algorithm obtains the optimal weight vector by searching the DOA of the satellite signal and uses the output of cross correlation as a decision criterion.Test results show that the algorithm can suppress the jamming effectively,and generate high gain toward the desired signal.The research provides a new idea for the engineering implementation of a multi-beam anti-jamming algorithm based on subspace projection.

关键词： global navigation satellite system(GNSS) anti-jamming spatial blind search subspace projection

基于冷却水管的大体积混凝土基础有限元仿真分析

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华北科技学院学报 2024年第2期21卷 77-84页

作者：鞠悠然马海彬安徽理工大学土木建筑学院安徽淮南232001

为研究大体积筏板基础混凝土水化热过程,避免因温差过大引起温度裂缝,以广州市锦佳华庭C2#超高层住宅楼筏板基础为依托,在ANSYS有限元软件中建立模型,对有无冷却水管情况下筏板基础的温度场和温度应力分布进行分析。研究结果表明:筏板... 详细信息

为研究大体积筏板基础混凝土水化热过程,避免因温差过大引起温度裂缝,以广州市锦佳华庭C2#超高层住宅楼筏板基础为依托,在ANSYS有限元软件中建立模型,对有无冷却水管情况下筏板基础的温度场和温度应力分布进行分析。研究结果表明:筏板基础出现裂缝的风险相对较高,需要实施适当的保护措施;冷却水管的降温效果明显,相比无冷却水管作用,温度峰值下降11.69℃,提前出现26小时,降温效率达到26.08%,且混凝土的温度应力均低于允许应力,不易产生裂缝;在现场实际测量中,基础里表温差最大值为16.1℃,单日最大降温速率1.7℃/d,实测数据均满足规范标准;基础在养护完成后,其外部未出现明显裂痕,证实以设置冷却水管为主的温控措施可以显著减少水化热的影响,减小内外温差以避免温度裂缝的产生;实测结果与有限元结果基本吻合,可为类似的超高层住宅建筑基础温控措施提供参考。

关键词：大体积混凝土有限元分析水化热冷却水管

针刀调控软骨细胞自噬维持骨关节炎软骨细胞的稳态

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中国组织工程研究 2024年第34期28卷 5452-5457页

作者：贾小飞冉丽马小双黑晓燕刘佳妮杨楠马海滨常敬鹏宁夏回族自治区人民医院(宁夏医科大学附属自治区人民医院)康复医学科宁夏回族自治区银川市750001

背景:针刀是治疗骨关节炎的有效方法,临床疗效肯定,但具体机制尚未明确。目的:探讨针刀调控软骨细胞自噬维持骨关节炎软骨细胞稳态的作用。方法:采用随机数字表法将28只新西兰兔分为对照组、骨关节炎组、针刀组和透明质酸组,每组7只,后... 详细信息

背景:针刀是治疗骨关节炎的有效方法,临床疗效肯定,但具体机制尚未明确。目的:探讨针刀调控软骨细胞自噬维持骨关节炎软骨细胞稳态的作用。方法:采用随机数字表法将28只新西兰兔分为对照组、骨关节炎组、针刀组和透明质酸组,每组7只,后3组保持左后肢过伸位采用石膏绷带固定6周建立膝骨关节炎模型,建模成功后,对照组与骨关节炎组不进行任何治疗,针刀组给予针刀治疗(15 min/次,1次/周),透明质酸组膝关节腔内注射透明质酸钠溶液(1次/周),均连续治疗5周。末次治疗后第2天,采用DR片观察兔膝关节宏观结构,透射电镜观察软骨细胞超微结构,Tunel染色检测软骨细胞凋亡,Western blot检测PI3K/Akt/mTOR通路及自噬相关蛋白表达。结果与结论:(1)DR片显示,骨关节炎组兔膝关节间隙变窄、周围骨赘形成;相较于骨关节炎组,透明质酸组、针刀组兔膝关节间隙增宽,周围骨赘减少;(2)透射电镜下可见骨关节炎组兔膝关节软骨细胞内自噬体数量减少,细胞核皱缩、核膜破裂,细胞器形态不完整、细胞呈现明显死亡趋向;相较于骨关节炎组,透明质酸组与针刀组自噬体明显增加,细胞核核膜完整,细胞生存状态良好;(3)Tunel染色结果显示,相较于骨关节炎组,透明质酸组、针刀组凋亡软骨细胞明显减少;(4)Western blot检测结果显示,与对照组比较,骨关节炎组Beclin1、Cath D和LC3Ⅱ/LC3Ⅰ蛋白表达降低(P <0.05),p-Akt/Akt、p-mTOR/mTOR蛋白表达升高(P <0.05);与骨关节炎组比较,透明质酸组和针刀组Beclin1、Cath D和LC3Ⅱ/LC3Ⅰ蛋白表达升高(P <0.05),p-Akt/Akt、p-mTOR/mTOR蛋白表达降低(P <0.05);(5)结果表明,针刀可通过抑制PI3K/Akt/mTOR信号通路传导来提高软骨细胞自噬水平,维持软骨细胞稳态,最终延缓软骨退变。

关键词：针刀软骨细胞自噬骨关节炎软骨细胞稳态透明质酸

基于电压相量轨迹的电网静态稳定主导模式识别方法

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电力建设 2024年第6期45卷 149-162页

作者：郜燊刘道伟赵高尚安军杨红英马海滨东北电力大学电气工程学院吉林省吉林市132012 中国电力科学研究院有限公司北京市100192

随着新型电力系统建设的推进,系统运行机理和动态特性愈加复杂,电网随机性增强,功角稳定和电压稳定常常相互交织不易区分,导致难以制定准确有效的调控策略,因此准确识别系统稳定主导模式对电网调控具有重要意义。首先,阐述了电网功角稳... 详细信息

随着新型电力系统建设的推进,系统运行机理和动态特性愈加复杂,电网随机性增强,功角稳定和电压稳定常常相互交织不易区分,导致难以制定准确有效的调控策略,因此准确识别系统稳定主导模式对电网调控具有重要意义。首先,阐述了电网功角稳定和电压稳定的辩证关系;其次,以电压相量轨迹为切入点,解析了相轨迹几何特征及其轨迹灵敏度数学模型;在此基础上,基于轨迹灵敏度距离进行定量分析,揭示了电网静态稳定主导特征,并提出基于电压相量轨迹的电网静态稳定主导识别判据;最后,通过算例分析及对比校验,验证了文章所提方法的有效性,实现了电网静态稳定主导模式识别。

关键词：功角稳定电压稳定电压相量轨迹主导判据主导模式识别

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城乡梯度3种林分类型土壤酶活性及影响因素

森林与环境学报 2024年第1期44卷 35-44页

作者：杨紫浓肖以华马海宾王圣洁李明付志高中国林业科学研究院热带林业研究所广东广州510520 热带林业研究国家林业和草原局重点实验室广东广州510520

以广州市城区、近郊和乡村森林土壤为研究对象,探讨马尾松林、针阔混交林和常绿阔叶林土壤酶活性特征及其与理化性质和重金属之间的关系。结果表明:马尾松林土壤酸性磷酸酶(AP)、脲酶(URE)活性以及针阔混交林土壤过氧化氢酶(CAT)、URE... 详细信息

以广州市城区、近郊和乡村森林土壤为研究对象,探讨马尾松林、针阔混交林和常绿阔叶林土壤酶活性特征及其与理化性质和重金属之间的关系。结果表明:马尾松林土壤酸性磷酸酶(AP)、脲酶(URE)活性以及针阔混交林土壤过氧化氢酶(CAT)、URE、脱氢酶(DH)活性均为近郊>乡村>城区,而常绿阔叶林土壤AP、URE、DH活性为近郊>城区>乡村。城区、近郊针阔混交林土壤pH值、砂粒含量均显著高于马尾松林和常绿阔叶林(P<0.05);土壤有机质(SOM)、总氮(TN)、总磷(TP)含量均为马尾松林<针阔混交林<常绿阔叶林;乡村针阔混交林土壤SOM含量、阳离子交换量(CEC)、黏粒含量、粉粒含量、含水率在3种林分中均最低。城区马尾松林土壤重金属铜(Cu)、锌(Zn)、铅(Pb)含量在3种林分间均最低,而镉(Cd)含量在3种林分间相同;近郊、乡村常绿阔叶林土壤重金属Zn、Pb含量在3种林分中均最高。土壤含水率、SOM含量、pH值、CEC、Cu含量、黏粒含量、TN含量是土壤酶活性的主要影响因子。相关性分析表明,土壤SOM、TN含量与土壤CAT、AP活性呈显著正相关(P<0.05);土壤TP含量与土壤AP、URE活性呈显著正相关(P<0.05);土壤含水率与土壤DH活性呈显著正相关(P<0.05);而土壤Cu含量与URE活性呈显著负相关(P<0.05)。

关键词：城乡梯度林分类型土壤酶活性土壤理化性质重金属广州市

Multi-scale cross-domain alignment for person image generation

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CAAI Transactions on Intelligence Technology 2024年第2期9卷 374-387页

作者： Liyuan ma Tingwei Gao haibin Shen Kejie Huang Department of Information Science&Electronic Engineering Zhejiang UniversityHangzhouZhejiangChina Alibaba Group HangzhouChina

Person image generation aims to generate images that maintain the original human appearance in different target poses.Recent works have revealed that the critical element in achieving this task is the alignment of appearance domain and pose domain.Previous alignment methods,such as appearance flow warping,correspondence learning and cross attention,often encounter challenges when it comes to producing fine texture details.These approaches suffer from limitations in accurately estimating appearance flows due to the lack of global receptive field.Alternatively,they can only perform cross-domain alignment on high-level feature maps with small spatial dimensions since the computational complexity increases quadratically with larger feature sizes.In this article,the significance of multi-scale alignment,in both low-level and high-level domains,for ensuring reliable cross-domain alignment of appearance and pose is demonstrated.To this end,a novel and effective method,named Multi-scale Crossdomain Alignment(MCA)is proposed.Firstly,MCA adopts global context aggregation transformer to model multi-scale interaction between pose and appearance inputs,which employs pair-wise window-based cross attention.Furthermore,leveraging the integrated global source information for each target position,MCA applies flexible flow prediction head and point correlation to effectively conduct warping and fusing for final transformed person image generation.Our proposed MCA achieves superior performance on two popular datasets than other methods,which verifies the effectiveness of our approach.

关键词： artificial intelligence image processing image reconstruction

趋化因子受体4及其配体12在下咽鳞状细胞癌中的表达及其临床意义

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中国耳鼻咽喉颅底外科杂志 2024年第3期30卷 40-45页

作者：任雪燕刘琳孙凯丽杨雪要兆旭冯志星马海滨韩海平邯郸市中心医院耳鼻咽喉头颈外科河北邯郸056001

目的探究趋化因子受体4(CXCR4)及趋化因子配体12(CXCL12)在下咽鳞状细胞癌(HSCC)中的表达及其临床意义。方法以2017年1月—2022年11月收治的90例HSCC患者为研究对象,以HSCC患者手术切除的HSCC组织、癌旁组织为实验材料,采用免疫组织... 详细信息

目的探究趋化因子受体4(CXCR4)及趋化因子配体12(CXCL12)在下咽鳞状细胞癌(HSCC)中的表达及其临床意义。方法以2017年1月—2022年11月收治的90例HSCC患者为研究对象,以HSCC患者手术切除的HSCC组织、癌旁组织为实验材料,采用免疫组织化学染色法检测HSCC组织和癌旁组织中CXCR4、CXCL12的表达情况;采用实时荧光定量PCR(qRT-PCR)法检测HSCC组织和癌旁组织中CXCR4 mRNA、CXCL12 mRNA水平;收集并记录HSCC患者临床病理特征,分析CXCR4、CXCL12表达水平与患者临床病理特征的关系;采用Pearson分析CXCR4与CXCL12水平相关性。结果 CXCR4在HSCC组织中的表达率为60.00%,明显高于癌旁组织的17.78%(P<0.05);CXCL12在HSCC组织中的表达率为57.78%,明显高于癌旁组织的24.44%(P<0.05)。HSCC组织中CXCR4、CXCL12水平均与淋巴结是否转移、TNM分期、分化程度有关(P<0.05)。与癌旁组织相比较,HSCC组织CXCR4、CXCL12水平均显著升高(P<0.05)。Pearson分析显示,HSCC患者中CXCR4水平与CXCL12水平呈正相关(r=0.538,P<0.05)。结论 CXCR4、CXCL12在HSCC组织中呈高表达,两者与HSCC淋巴结转移、分化程度、TNM分期有关。

关键词：下咽鳞状细胞癌趋化因子受体4 趋化因子配体12 临床意义