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基于RFID温度标签的变电站装配式线缆槽盒温度监控方法

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自动化技术与应用 2024年第8期43卷 68-72页

作者：徐伟明屠锋李斌吴正清王法嘉兴恒创电力设计研究院有限公司浙江嘉兴314000 国网浙江省电力有限公司浙江杭州310000 国网嘉兴供电公司浙江嘉兴314000

由于红外测温仪和温度传感器在采集温度数据时会出现偏差,且监控方法能耗较高。对此,提出基于RFID温度标签的变电站装配式线缆槽盒温度监控方法。设计一种RFID温度标签,采集变电站装配式线缆槽盒温度数据,并实施数据清理以及数据变换预... 详细信息

由于红外测温仪和温度传感器在采集温度数据时会出现偏差,且监控方法能耗较高。对此,提出基于RFID温度标签的变电站装配式线缆槽盒温度监控方法。设计一种RFID温度标签,采集变电站装配式线缆槽盒温度数据,并实施数据清理以及数据变换预处理。结合关联维提取预处理好的温度数据特征。通过计算异常指数,判断变电站装配式线缆槽盒温度异常状态。结果表明:与基于红外测温仪的监控方法和基于温度传感器的监控方法相比,所研究的方法采集数据与真实数据的拟合度更高,达到0.9852,说明采集数据更为准确,该方法更能维持长时间的监控工作。

关键词： RFID温度标签变电站装配式线缆槽盒特征提取温度监控方法

Atomic Co/Ni dual sites with N/P-coordination as bifunctional oxygen electrocatalyst for rechargeable zinc-air batteries

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Nano Research 2021年第10期14卷 3482-3488页

作者： Botao Hu Aijian Huang Xuejiang Zhang Zheng Chen Renyong tu Wei Zhu Zhongbin Zhuang Chen Chen qing Peng Yadong Li Department of Chemistry Tsinghua UniversityBeijing 100084China School of Electronics Science and Engineering University of Electronic Science and Technology of ChinaChengdu 610054China College of Chemical Engineering Beijing University of Chemical TechnologyBeijing 100029China College of Chemistry and Materials Science Anhui Normal UniversityWuhu 241000China

Metal-nitrogen-carbon(M-N-C)single-atom catalysts exhibit desirable electrochemical catalytic ***,the replacement of N atoms by heteroatoms(B,P,S,etc.)has been regarded as a useful method for regulating the coordination *** structure engineered M-N-C sites via doping heteroatoms play an important role to the adsorption and activation of the oxygen ***,we develop an efficient strategy to construct dual atomic site catalysts via the formation of a Co_(1)-PN and Ni1-PN planar *** developed Co_(1)-PNC/Ni1-PNC catalyst exhibits excellent bifunctional electrocatalytic performance in alkaline *** experimental and theoretical results demonstrated that the N/P coordinated Co/Ni sites moderately reduced the binding interaction of oxygen *** Co_(1)-PNC/Ni1-PNC endows a rechargeable Zn-air battery with excellent power density and cycling stability as an air-cathode,which is superior to that of the benchmark Pt/C+IrO_(2).This work paves an avenue for design of dual single-atomic sites and regulation of the atomic configuration on carbon-based materials to achieve high-performance electrocatalysts.

关键词： single-atom catalysts dual atomic sites bifunctional electrocatalyst metal-organic framework Zn-air battery

A review of high-performance MEMS sensors for resource exploration and geophysical applications

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Petroleum Science 2022年第6期19卷 2631-2648页

作者： Hua-Feng Liu Zhi-Cai Luo Zhong-Kun Hu Shan-qing Yang Liang-Cheng tu Ze-Bing Zhou Michael Kraft National Precise Gravity Measurement Facility(PGMF)and School of Physics Huazhong University of Science and TechnologyWuhanHubei430074China Institute of Geophysics Huazhong University of Science and TechnologyWuhanHubei430074China TianQin Research Center for Gravitational Physics and School of Physics and Astronomy Sun Yat-sen University(Zhuhai Campus)ZhuhaiGuangdong519082China Nanchang Research Institute Sun Yat-sen UniversityNanchangJiangxi330099China ESAT-MNS University of LeuvenLeuvenBelgium

MEMS sensors have the advantages of small volume,lightweight,and low cost,therefore,have been widely used in the fields of consumer electronics,industry,health,defence,and *** their ever-improving performance,MEMS sensors have also started to be used in resource exploration and geophysical ***,the requirements of high-precision MEMS sensors for geophysical applications have not been specified in ***,this paper systematically analyzes the requirements of high-performance MEMS sensors for prospecting and geophysical applications,including seismic surveillance,Earth tide,volcanic activity monitoring for natural disasters;seismic,gravity,and magnetic resource prospecting;drilling process monitoring and local gravity measurement for gravity aided *** on the above applications,this paper summarizes the state-of-the-art of research on high-performance MEMS sensors for resource exploration and geophysical *** off-the-shelf MEMS sensors have been used for earthquake monitoring,seismic exploration and drilling process monitoring,and a range of MEMS research prototype sensors have successfully been employed for Earth tides measurement and are promising to be used for gravity *** magnetometers should have a lower noise floor to meet the demand for magnetic *** gravity gradiometers are still under early development and will not be deployable in *** MEMS sensors hold the advantages of low-cost,high integration,and capability of working in extreme environments;therefore,they are likely to gradually replace some conventional geophysical instruments in some application areas.

关键词： Accelerometer Seismometer Gravimeter Tilt-meter Magnetometer

Carbide dissolution and austenite grain growth behavior of a new ultrahigh-strength stainless steel

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Journal of Iron and Steel Research International 2020年第6期27卷 732-741页

作者： Zhen-bao Liu Xin tu Xiao-hui Wang Jian-xiong Liang Zhi-yong Yang Yong-qing Sun Chang-jun Wang Institute for Special Steel Institute Central Iron and Steel Research InstituteBeijing 100081China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

The isothermal grain growth behavior for a new ultrahigh-strength stainless steel (UHSSS) is investigated in temperature range from 900 to 1150 ℃ and holding time range from 0 to 20 min. In the temperature range from 1000 to 1050 ℃, a bimodal grain size distribution was induced by different austenite grain growth rates which resulted from the weakened pin-ning effect by the partial dissolution of M6C particles along austenite grain boundaries. Further raising heating temperatures, M6C particles almost dissolved and the bimodal grain size distribution phenomenon became weakened, indicating that the austenite grain coarsening temperature of the new UHSSS was close to 1050 ℃. According to the present experimental results, a pragmatic mathematical model based on the Arrhenius equations was developed to predict the austenite grain growth process, which elaborated the influence of heating temperature, holding time and initial grain size on the austenite grain growth. Predictions for the new UHSSS presented a good agreement with experimental results.

关键词： Ultrahigh-strength stainless steel Austenite grain growth Mathematical model M6C particle

Kunxian Capsule Extract Inhibits Angiogenesis in Zebrafish Embryos via PI3K/AKT-MAPK-VEGF Pathway

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Chinese Journal of Integrative Medicine 2023年第2期29卷 137-145页

作者： MA Rui-jiao Maharajan Kannan XIA qing ZHANG Shan-shan tu Peng-fei LIU Ke-chun ZHANG Yun Biology Institute Qilu University of Technology(Shandong Academy of Sciences)Jinan 250103China Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Shandong Province Jinan 250103China State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical SciencesPeking UniversityBeijing 100191China

Objective: To investigate the anti-angiogenic activity of Kunxian Capsule(KX) extract and explore the underlying molecular mechanism using zebrafish. Methods: The KX extract was prepared with 5.0 g in 100 mL of 40% methanol followed by ultrasonication and freeze drying. Freeze dried KX extract of 10.00 mg was used as test stock solution. Triptolide and icariin, the key bioactive compounds of KX were analyzed using ultra-high performance liquid chromatography. The transgenic zebrafish Tg(flk1:GFP) embryos were dechorionated at 20-h post fertilization(hpf) and treated with PTK 787, and 3.5, 7, 14 and 21 μg/m L of KX extract, *** 24-h post exposure(hpe), mortality and malformation(%), intersegmental vessels(ISV) formation, and m RNA expression level of angiogenic pathway genes including phosphoinositide 3-kinase(PI3K), protein kinase B(AKT),extracellular signal-regulated kinases(ERKs), mitogen-activated protein kinase(MAPK), vascular endothelial growth factor(VEGF) and fibroblast growth factor(FGF-2) were determined. Further, the embryos at 72 hpf were treated with KX extract to observe the development of sub-intestinal vein(SIV) after 24 hpe. Results: The chromatographic analysis of test stock solution of KX extract showed that triptolide and icariin was found as 0.089 mg/g and 48.74 mg/g, respectively, which met the requirements of the national drug standards. In zebrafish larvae experiment, KX extract significantly inhibited the ISV(P<0.01) and SIV formation(P<0.05). Besides, the m RNA expression analysis showed that KX extract could significantly suppress the expressions of PI3K and AKT,thereby inhibiting the m RNA levels of ERKs and MAPK. Moreover, the downstream signaling cascade affected the expression of VEGF and its receptors(VEGFR and VEGFR-2). FGF-2, a strong angiogenic factor, was also downregulated by KX treatment in zebrafish larvae. Conclusion: KX extract exhibited anti-angiogenic effects in zebrafish embryos by regulating PI3K/AKT-MAPK-VE

关键词： angiogenesis rheumatoid arthritis synovial inflammation osteoporosis Chinese medicine

锂离子电池Si/C复合负极材料的倍率性能研究进展

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炭素技术 2024年第3期43卷 9-14页

作者：谭婷梁帆杨乐之习小明涂飞跃王力陈涛王双彭青姣长沙矿冶研究院有限责任公司湖南长沙410012

锂离子电池(LIBs)因具备寿命长、能量密度高、自放电率低等优点广泛应用于新能源电动汽车、移动电子设备、航天航空、清洁储能等领域。但传统的商业石墨负极材料的理论容量仅为372 mAh·g^(-1),已经无法满足对锂离子电池高容量的需求。S... 详细信息

锂离子电池(LIBs)因具备寿命长、能量密度高、自放电率低等优点广泛应用于新能源电动汽车、移动电子设备、航天航空、清洁储能等领域。但传统的商业石墨负极材料的理论容量仅为372 mAh·g^(-1),已经无法满足对锂离子电池高容量的需求。Si基负极材料具有高比容量(4200 mAh·g^(-1))、资源丰富、制备工艺简单等特点,被认为是替代石墨的理想负极材料。但是Si的导电性差,在充放电过程中存在巨大的体积效应限制了硅负极的发展。而Si/C复合负极材料能很好地综合两者的优势,形成结构稳定,导电性能好的负极材料。本文从Si/C复合负极材料倍率性能的影响因素、Si/C负极的改性进展以及解决方案等方面综述了Si/C复合负极材料的最新研究进展,以期为Si/C复合负极材料的设计提供新思路。

关键词：锂离子电池硅负极负极材料倍率性能 Si/C复合材料

缓控释肥处理下油橄榄土壤微生物多样性特征分析

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西部林业科学 2024年第1期53卷 145-155,162页

作者：秃玉翔胡青辛培尧陆斌郭永清赵敏郝佳波赵川徐亮西南林业大学园林园艺学院云南昆明650224 云南省林业和草原科学院云南昆明650201 西南林业大学国家林业和草原局西南风景园林工程技术研究中心云南昆明650224 西南林业大学西南地区生物多样性保育国家林业和草原局重点实验室云南昆明650224

为了探究油橄榄健康施肥和实现土壤可持续化经营管理提供理论和实践依据,采用Illumina Miseq高通量测序技术对不同缓释肥处理下的油橄榄种植地0~10 cm和10~20 cm土层土壤微生物多样性及群落特征进行研究。结果显示:(1)细菌OUT隶属于35门... 详细信息

为了探究油橄榄健康施肥和实现土壤可持续化经营管理提供理论和实践依据,采用Illumina Miseq高通量测序技术对不同缓释肥处理下的油橄榄种植地0~10 cm和10~20 cm土层土壤微生物多样性及群落特征进行研究。结果显示:(1)细菌OUT隶属于35门111纲268目485科1087属;真菌OUT隶属14门42纲95目230科431属。(2)变形菌门、放线菌门、酸杆菌门、厚壁菌门、绿弯菌门和芽单胞菌门为优势细菌门,子囊菌门、担子菌门和被包霉门为优势真菌门;假单胞菌属、67-14、索利红杆菌属、Subgroup_6和红色杆菌属为优势细菌属,镰刀菌属、无茎真菌属、瓶毛壳属、小囊菌属和葡孢霉属为优势真菌属。(3)施肥处理能明显促进土壤中0~20 cm土层的真菌和0~10 cm土层的细菌生长,而抑制10~20 cm细菌生长。(4)细菌和真菌群落分布与土层相关性较小;各个处理下土壤细菌群落结构差异不明显,而真菌则存在明显差异。研究表明,施用缓控释肥能够有效增加土壤中微生物多样性,尤其是混合施肥效果更明显,6 kg半焦肥+8颗力浮丸的组合可作为生产实践中的优选参考方案。

关键词：油橄榄缓控释肥微生物群落结构微生物多样性

广义Chebyshev滤波器传输零点的确定

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电子学报 2008年第2期36卷 250-254页

作者：涂治红褚庆昕华南理工大学电子与信息学院广东广州510641

传输零点的确定是交叉耦合滤波器综合的最基本要素.本文利用广义Chebyshev函数的极值特性以及滤波器阶数与传输零点最大值的关系,提出了一种根据滤波器特性指标同时确定广义Chebyshev滤波器的阶数和传输零点位置的方法,弥补了传统方法... 详细信息

传输零点的确定是交叉耦合滤波器综合的最基本要素.本文利用广义Chebyshev函数的极值特性以及滤波器阶数与传输零点最大值的关系,提出了一种根据滤波器特性指标同时确定广义Chebyshev滤波器的阶数和传输零点位置的方法,弥补了传统方法中传输零点确定的人为随意性,在满足技术指标条件下,实现了广义Chebyshev滤波器阶数最少,传输零点位置最佳.几个数值实验显示了该方法的过程和有效性.

关键词：广义Chebyshev函数交叉耦合滤波器传输零点传输极值点频率

Dynein axonemal heavy chain 10 deficiency causes primary ciliary dyskinesia in humans and mice

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Frontiers of Medicine 2023年第5期17卷 957-971页

作者： Rongchun Wang Danhui Yang Chaofeng tu Cheng Lei Shuizi Ding Ting Guo Lin Wang Ying Liu Chenyang Lu Binyi Yang Shi Ouyang Ke Gong Zhiping Tan Yun Deng Yueqiu Tan Jie qing hong Luo Department of Pulmonary and Critical Care Medicine The Second Xiangya Hospital of Central South UniversityChangsha410011China Research Unit of Respiratory Disease Central South UniversityChangsha410011China Hunan Diagnosis and Treatment Center of Respiratory Disease Changsha410011China Institute of Reproductive and Stem Cell Engineering NHC Key Laboratory of Human Stem Cell and Reproductive EngineeringSchool of Basic Medical ScienceCentral South UniversityChangsha410078China Clinical Research Center for Reproduction and Genetics in Hunan Province Reproductive and Genetic Hospital of CITIC-XiangyaChangsha410078China Zebrafish Genetics Laboratory College of Life SciencesHunan Normal UniversityChangsha410081China Department of Cardiovascular Surgery The Second Xiangya Hospital of Central South UniversityCentral South UniversityChangsha410011China Clinical Center for Gene Diagnosis and Therapy Department of Cardiovascular SurgeryThe Second Xiangya Hospital of Central South UniversityChangsha410011China

Primary ciliary dyskinesia(PCD)is a congenital,motile ciliopathy with pleiotropic *** nearly 50 causative genes have been identified,they only account for approximately 70%of definitive PCD *** axonemal heavy chain 10(DNAH10)encodes a subunit of the inner arm dynein heavy chain in motile cilia and sperm *** on the common axoneme structure of motile cilia and sperm flagella,DNAH10 variants are likely to cause *** exome sequencing,we identified a novel DNAH10 homozygous variant(c.589C>T,p.R197W)in a patient with PCD from a consanguineous *** patient manifested sinusitis,bronchiectasis,situs inversus,and *** analysis showed the absence of DNAH10 and DNALI1 in the respiratory cilia,and transmission electron microscopy revealed strikingly disordered axoneme 9+2 architecture and inner dynein arm defects in the respiratory cilia and sperm ***,animal models of Dnah10-knockin mice harboring missense variants and Dnah10-knockout mice recapitulated the phenotypes of PCD,including chronic respiratory infection,male infertility,and *** the best of our knowledge,this study is the first to report DNAH10 deficiency related to PCD in human and mouse models,which suggests that DNAH10 recessive mutation is causative of PCD.

关键词： DNAH10 mice motile cilia mutation primary ciliary dyskinesia