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RuO_(2)/TiO_(2)/MXene with multi-heterojunctions coating on carbon cloth for high-activity chlorine evolution reaction at large current densities

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Nano Research 2024年第6期17卷 4764-4772页

作者： Yuhao Duan Liuxu Wei Chenyu Cai Junbao Mi Fuyuan Cao jiaze Chen Xiaolong Li Xiujiang Pang Bin Li Lei Wang Key Laboratory of Eco-chemical Engineering Ministry of EducationInternational Science and Technology Cooperation Base of Eco-chemical Engineering and Green ManufacturingCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China College of Materials Science and Engineering Qingdao University of Science and TechnologyQingdao 266042China College of Environment and Safety Engineering Qingdao University of Science and TechnologyQingdao 266042China

The chlorine evolution reaction(CER)is a crucial step in the production of chlorine gas and active chlorine by chlor-alkali electrolysis.Currently,the endeavor to fabricate electrodes capable of yielding high current density at minimal overpotential remains a central challenge in advancing the realm of chlorine evolution reactions.here,we grow TiO_(2)and RuO_(2)on MXene@carbon cloth(CC)through the favorable affinity and induced deposition effect between the surface functional groups of MXene and the metal.A self-supported electrode(RuTiO_(2)/MXene@CC)with strong binding at the electrocatalyst-support interface and weak adhesion at electrocatalyst-bubble interface is constructed.The RuTiO_(2)/MXene@CC can reduce the electron density of RuO_(2)by regulating the electron redistribution at the heterogeneous interface,thus enhancing the adsorption of Cl−.RuTiO_(2)/MXene@CC could achieve a high current density of 1000 mA·cm^(−2)at a small overpotential of 220 mV,superior to commercial dimensionally stable anodes(DSA).This study provides a new strategy for constructing efficient CER catalysts at high current density.

关键词： chlorine evolution reaction high current density MXene TiO_(2) RuO_(2)

Pressure-triggered stacking dependence of interlayer coupling in bilayer WS

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Science China(Physics,Mechanics & Astronomy) 2024年

作者： Zejuan Zhang Chenyin Jiao Shenghai Pei Xilong Zhou jiaze Qin Wanli Zhang Yu Zhou Zenghui Wang Juan Xia School of Integrated Sciences and Engineering (Exemplary School of Microelectronics) University of Electronic Science and Technology of China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China School of Physics and Electronics Hunan Key Laboratory of Nanophotonics and Devices Central South University State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China

Tungsten disulfide（WS2） has been reported to show negligible stacking dependence under ambient conditions, impeding its further explorations on physical properties and potential applications. here, we realize efficient modulation of interlayer coupling in bilayer WS2with 3R and 2H stackings by high pressure, and find that the pressure-triggered interlayer coupling and pressure-induced resonant-to-nonresonant transition exhibit prominent stacking dependence, which are experimentally observed for the first time in WS2. Our work may unleash the stacking degree of freedom in designing WS2devices with tailored properties correlated to interlayer coupling.

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Pulmonary rehabilitation restores limb muscle mitochondria and improves the intramuscular metabolic profile

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Chinese Medical Journal 2023年第4期136卷 461-472页

作者： Shiwei Qumu Weiliang Sun Jing Guo Yuting Zhang Lesi Cai Chaozeng Si Xia Xu Lulu Yang Xuanming Situ Tianyi Yang jiaze he Minghui Shi Dongyan Liu Xiaoxia Ren Ke Huang Hongtao Niu Hong Li Chang’An Yu Yang Chen Ting Yang Department of Pulmonary and Critical Care Medicine Center of Respiratory MedicineNational Center for Respiratory MedicineNational Clinical Research Center for Respiratory DiseasesChina-Japan Friendship HospitalBeijing 100029China Institute of Clinical Medical Sciences China-Japan Friendship HospitalBeijing 100029China National Anti-Drug Laboratory Beijing Regional Center Beijing 100164China Department of Information Management China–Japan Friendship HospitalBeijing 100029China Department of Immunology School of Basic Medical SciencesCapital Medical UniversityBeijing 100005China Capital Medical University Beijing 100069China Department of Rehabilitation China–Japan Friendship HospitalBeijing 100029China Tsinghua University School of Medicine Beijing 100084China Department of Cardiology China–Japan Friendship HospitalBeijing 100029China The State Key Laboratory of Medical Molecular Biology Department of Biochemistry and Molecular BiologyInstitute of Basic Medical SciencesSchool of Basic MedicineChinese Academy of Medical Science and Peking Union Medical CollegeBeijing 100005China Institute of Respiratory Medicine Chinese Academy of Medical ScienceBeijing 100029China

Background: Exercise, as the cornerstone of pulmonary rehabilitation, is recommended to chronic obstructive pulmonary disease (COPD) patients. The underlying molecular basis and metabolic process were not fully elucidated. Methods: Sprague-Dawley rats were classified into five groups: non-COPD/rest ( n = 8), non-COPD/exercise ( n = 7), COPD/rest ( n = 7), COPD/medium exercise ( n = 10), and COPD/intensive exercise ( n = 10). COPD animals were exposed to cigarette smoke and lipopolysaccharide instillation for 90 days, while the non-COPD control animals were exposed to room air. Non-COPD/exercise and COPD/medium exercise animals were trained on a treadmill at a decline of 5° and a speed of 15 m/min while animals in the COPD/intensive exercise group were trained at a decline of 5° and a speed of 18 m/min. After eight weeks of exercise/rest, we used ultrasonography, immunohistochemistry, transmission electron microscopy, oxidative capacity of mitochondria, airflow-assisted desorption electrospray ionization-mass spectrometry imaging (AFADESI-MSI), and transcriptomics analyses to assess rectal femoris (RF). Results: At the end of 90 days, COPD rats’ weight gain was smaller than control by 59.48 ± 15.33 g ( P = 0.0005). The oxidative muscle fibers proportion was lower ( P he end of additional eight weeks of exercise/rest, compared to COPD/rest, COPD/medium exercise group showed advantages in weight gain, femoral artery peak flow velocity (Δ58.22 mm/s, 95% CI: 13.85-102.60 mm/s, P = 0.0104), RF diameters (Δ0.16 mm, 95% CI: 0.04-0.28 mm, P = 0.0093), myofibrils diameter (Δ0.06 μm, 95% CI: 0.02-0.10 μm, P = 0.006), oxidative muscle fiber percentage (Δ4.84%, 95% CI: 0.15-9.53%, P = 0.0434), mitochondria oxidative phosphorylate capacity ( P < 0.0001). Biomolecules spatial distribution in situ and bioinformatic analyses of transcriptomics suggested COPD-related alteration in metabolites and gene expression, which can be impacted by exercise. Conclusion: COPD rat model had multi-level structure and function imp

关键词： Pulmonary rehabilitation Chronic obstructive pulmonary disease Airflow-assisted desorption electrospray ionization-mass spectrometry imaging Docosapentaenoic acid

2.32W anti-misaligned Er:LuAG single-longitudinal-mode laser in the double corner-cube-retroreflector resonator and MOPA system

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Chinese Optics Letters 2024年第2期22卷 114-119页

作者：范佳玮鞠有伦姜辰晨袁越闫东杨星帮段小明戴通宇姚宝权吴佳泽 National Key Laboratory of Tunable Laser Technology Harbin Institute of TechnologyHarbin 150001China Department of Physics and Chemistry PLA Army Academy of Special OperationsGuangzhou 510507China Zhengzhou Research Institute of Harbin Institute of Technology Zhengzhou 450000China

We demonstrate a high power,Er:Lu AG single-longitudinal-mode laser in an anti-misaligned resonator.Based on the Faraday effect,a 1.61 W single-longitudinal-mode(SLM)laser is obtained with the double corner-cube-retroreflector(CCR)structure,and the tunable wavelength is 1649.2-1650.3 nm.Additionally,we investigate the anti-misalignment characteristics when the CCR moves and rotates along the optical axis.Furthermore,by utilizing the Er:Lu AG amplifier,the maximum 2.32 W single-longitudinal-mode laser at 1649.6 nm is achieved.The beam quality factors M^(2) of the 2.32 W Er:Lu AG single-longitudinal-mode laser are 1.23 and 1.25 along the horizontal(x)and vertical(y)directions,respectively.

关键词： Er:Lu AG single-longitudinal-mode laser Faraday effect MOPA system double corner-cube-retroreflector resonator

Tenda AX12路由器0-Day栈溢出漏洞挖掘方法

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信息安全学报 2024年第3期9卷 157-175页

作者：郑炜许晴晴李奇陈翔孙家泽西北工业大学软件学院西安710100 南通大学信息科学技术学院南通226019 西安邮电大学计算机学院西安710121

随着5G技术对物联网发展的加速,预计到2025年将会有约250亿台物联网设备连接到人们的生活。其中承担物联网设备网络管理角色的路由器使用量非常大,但是路由器存在众多安全问题,通过路由器设备进行攻击,可以非法获取用户信息。为了维护... 详细信息

随着5G技术对物联网发展的加速,预计到2025年将会有约250亿台物联网设备连接到人们的生活。其中承担物联网设备网络管理角色的路由器使用量非常大,但是路由器存在众多安全问题,通过路由器设备进行攻击,可以非法获取用户信息。为了维护网络安全,提前发现路由器的漏洞具有重要的研究意义。本文以Tenda AX12路由器为研究对象,从固件入手对其进行0-Day栈溢出漏洞挖掘研究,并提出了基于危险函数追踪的逆向分析漏洞挖掘方法。首先从危险函数中分析函数所在前端的对应位置,将前后端对应;然后对固件中的Web服务进行分析,对其中可能发生栈溢出的httpd二进制代码进行危险函数分析,该方法使用反汇编代码对危险函数的普通形式和展开形式进行定位,并对危险函数进行参数分析和动态检测;接着通过搭建仿真模拟机在模拟机上运行该服务的二进制文件,并在Web前端页面对潜在漏洞位置进行数据包捕捉;最后根据前期分析的危险函数参数情况对包进行改写并发送,以此来触发漏洞,验证漏洞的存在性,同时验证该危险函数是否发生栈溢出。为了更真实地确定漏洞存在,我们又在真实设备上验证漏洞的真实存在性和可利用性。实验结果表明了该漏洞的挖掘检测方法的有效性,我们分别在不同型号的路由器上挖掘到4个0-Day漏洞,并且经过与SaTC工具进行对比实验结果表明该检测方法能够更准确的定位到出现漏洞的函数位置。

关键词：物联网路由器危险函数strcpy 0-Day栈溢出漏洞 SaTC

替雷利珠单抗联合含铂双药方案治疗老年晚期肺腺癌的疗效

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中国临床研究 2024年第1期37卷 29-33页

作者：汪斐刘佩蒲嘉泽俞军南京医科大学第四附属医院肿瘤科江苏南京211899 南京医科大学附属肿瘤医院江苏省肿瘤医院分子实验室江苏南京210009

目的探讨替雷利珠单抗联合培美曲赛及卡铂化疗方案治疗晚期肺腺癌老年患者的疗效,及对血清胰岛素样生长因子1(IGF-1)、胰岛素样生长因子结合蛋白3(IGFBP-3)水平的影响。方法选取2021年7月至2022年12月南京医科大学第四附属医院收治的9... 详细信息

目的探讨替雷利珠单抗联合培美曲赛及卡铂化疗方案治疗晚期肺腺癌老年患者的疗效,及对血清胰岛素样生长因子1(IGF-1)、胰岛素样生长因子结合蛋白3(IGFBP-3)水平的影响。方法选取2021年7月至2022年12月南京医科大学第四附属医院收治的94例驱动基因阴性的晚期肺腺癌老年患者为研究对象,采用随机数字表法分为化疗组(培美曲赛联合卡铂治疗,n=48)及替雷利珠单抗组(培美曲赛+卡铂+替雷利珠单抗,n=46),以21 d为1个周期,治疗4个周期。记录两组临床疗效及治疗前后的免疫功能[T淋巴细胞亚群(CD4^(+)、CD8^(+)、CD4^(+)/CD8^(+))]、血清指标(IGF-1、IGFBP-3)变化,评估不良反应发生情况。结果替雷利珠单抗组临床疗效优于化疗组,客观有效率明显高于化疗组(58.70%vs 29.17%,χ^(2)=8.329,P0.05)。结论替雷利珠单抗联合含铂双药一线治疗老年晚期肺腺癌可提升临床疗效,改善CD4^(+)/CD8^(+)平衡,调节血清IGF-1、IGFBP-3水平,不良反应可控,治疗方案安全、可靠。

关键词：肺腺癌,晚期替雷利珠单克隆抗体卡铂培美曲赛免疫功能胰岛素样生长因子1 胰岛素样生长因子结合蛋白3

Can orientations of directionally solidified dual-phase Al_(2)O_(3)/YAG eutectics be induced by single-phase sapphire seeds?

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Journal of Materials Science & Technology 2023年第11期142卷 216-224页

作者： Liangting he Xu Wang jiaze Li Wangshuai Xiang Fuxue Yan Bailing Jiang Qiaodan Hu School of Materials Science and Engineering Xi’an University of Technology5 South Jinhua RoadXi’an 710048China Center for Advanced Structural Materials Department of Mechanical EngineeringCity University of Hong KongHong Kong 999077China School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Directionally solidified dual-phase Al_(2)O_(3)/Y_(3)Al_(5)O_(12)(YAG)eutectic ceramics(DSECs)typically exhibit strong anisotropy.To improve their properties,various single-phase sapphire seeds,including r-axis[1-102],m-axis[10-10],c-axis[0001],and a-axis[11-20],were used as seeds to induce the orientation of the Al_(2)O_(3)/YAG DSECs.The results showed that Al_(2)O_(3) in the eutectics could be governed by the sapphire seeds.The YAG in each induced eutectic had a specific growth direction endowed by Al_(2)O_(3) in the asinduced eutectics or the sapphire seed.herein,we calculated the planar lattice misfits and interfacial strain energies of four crystallographic orientation relationships based on the constructed lattice models.It was elucidated the constraint of the sapphire seed caused YAG to grow following the rule of mini-mizing the interfacial strain energy.This revealed the reason why Al_(2)O_(3)/YAG DSECs orientation can be successfully induced.These results may provide a novel method for the design of high-performance eu-tectic ceramic materials.

关键词： Al_(2)O_(3)/Y_(3)Al_(5)O_(12) Directional solidification Single-phase sapphire seed Crystallographic orientation relationship Interfacial strain energy

微孔白云石加入量对镁钙质中间包干式料性能的影响

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耐火材料 2024年第1期58卷 68-71页

作者：孟佳泽陈定顾华志黄奥付绿平武汉科技大学省部共建耐火材料与冶金国家重点实验室湖北武汉430081

以白云石为原料,采用二步煅烧法制备的致密镁钙砂是镁钙质中间包干式料常用的耐火原料。然而二步煅烧法工艺复杂,资源耗费大,且致密镁钙砂不利于中间包干式料隔热性能的提升。以一步煅烧法(1400℃保温3 h)制备的微孔白云石和电熔镁砂为... 详细信息

以白云石为原料,采用二步煅烧法制备的致密镁钙砂是镁钙质中间包干式料常用的耐火原料。然而二步煅烧法工艺复杂,资源耗费大,且致密镁钙砂不利于中间包干式料隔热性能的提升。以一步煅烧法(1400℃保温3 h)制备的微孔白云石和电熔镁砂为主要原料,分别于1100、1550℃热处理后制备了镁钙质干式料试样,研究了微孔白云石加入量(质量分数分别为0、15%、30%、45%和60%)对试样性能的影响。结果表明:随着微孔白云石加入量的增加,1100℃热处理后试样的线收缩率和体积密度呈减小趋势,常温耐压强度先增大后减小;1550℃热处理后试样的线收缩率先减小后显著增大,显气孔率增加,热导率大幅降低,但常温耐压强度和抗渣性能降低。当微孔白云石加入量为60%(w)时,1550℃热处理后试样在800℃下的热导率为2.410 W·m^(-1)·K^(-1),与传统镁质干式料相比下降了51.9%,同时常温耐压强度为26.0 MPa,在力学性能略微降低的情况下表现出优异的隔热性能。

关键词：镁钙质中间包干式料白云石隔热性能

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航空航天领域常用高温钎料研究现状

精密成形工程 2024年第7期16卷 191-204页

作者：祖家泽马佳秦建龙伟民郑州机械研究所有限公司新型钎焊材料与技术国家重点实验室郑州450001

近年来随着航空航天工业的发展,各类飞行器核心功能部件面临着使役环境愈发极端化的问题。超高速、高温等服役环境对各类零部件的整体性能提出了更高的要求,因此针对航空航天领域用高温钎料的研究尤为重要。在航空航天领域常用的高温钎... 详细信息

近年来随着航空航天工业的发展,各类飞行器核心功能部件面临着使役环境愈发极端化的问题。超高速、高温等服役环境对各类零部件的整体性能提出了更高的要求,因此针对航空航天领域用高温钎料的研究尤为重要。在航空航天领域常用的高温钎料包括镍基钎料、钴基钎料、钛基钎料、锰基钎料、贵金属钎料和高熵钎料等,通常应用于不锈钢、高温合金、钛合金以及新型陶瓷材料等的钎焊连接。主要针对在航空航天领域中常用的几种高温钎料,对钎料的元素组成和特性进行总结,对钎料的成形特点和工艺进行介绍,对研究和应用现状进行分析,并对航空航天领域的钎料与钎焊技术提出建议与展望,以期为提升钎焊技术在航空航天领域的应用价值提供参考和指导。

关键词：高温钎料镍基钎料钴基钎料钛基钎料锰基钎料贵金属钎料高熵钎料航空航天