采用交流海缆接入的海上风电场无功配置方法

对于海上风电采用交流电缆接入电网的形式,由于电缆充电功率较大,在接入电缆超过一定距离时,可能导致海上风电工程及其并网点电压以及载流量控制困难.针对上述问题,本文提出了海上风电经由交流海缆接入输变电工程无功配置方法.该方法可确定初步的无功配置方案;然后对不同方案下海缆的载流量以及沿线的电压分布情况进行了分析;最后,结合不同接入功率下接入点的电压波动情况,验证初步无功配置方案的可行性.     

高职院校资助育人状况的调研——以Y高职学校为例

以Y高职院校学生为调查对象,基于对当前资助育人工作的在线问卷调查和访谈,分析了当前高职院校资助育人的状况,并提出新时代下高职院校资助育人质量提升合理化建议,包括扩大资助政策宣传、加大对二级学院资助育人工作的考核、加强感恩教育、诚信教育、加强心理资助工作力度、加强勤工助学资助育人、加强受资助学生的存在感和获得感。     

基于混合特征预测药物-靶标相互作用的K近邻模型

针对核受体数据提取药物-靶标之间的混合特征,使用K近邻算法进行预测.对精确率、召回率、F1值等评价指标与其他算法进行了比较,验证模型的预测性能.     

Molybdate and tungstate as corrosion inhibitors for cold rolling steel in hydrochloric acid solution

The inhibition effects of molybdate and tungstate on the corrosion of cold rolling steel (CRS) in hydrochloric acid solution (0.1-0.5 M) were investigated by weight loss and electrochemistry methods. The results reveal that both molybdate and tungstate are very good inhibitors with little concentration. The adsorption of inhibitors on the CRS surface basically obeys the Langmuir adsorption isotherm equation. The effect of temperature on the corrosion behavior of CRS was also studied at 25 °C and 35 °C, the thermodynamic parameters such as adsorption heat (ΔH⁰) and adsorption free energy (ΔG⁰) were calculated. In the same conditions, a comparative study of corrosion inhibition of molybdate and tungstate indicated that molybdate was the better inhibitor in 0.1 M HCl. However, the value of percentage inhibition efficiency (IE) was dependent on the concentration of inhibitors in 0.2-0.5 M HCl. It seemed that molybdate did not have the strong inhibitive effect compared to tungstate with relatively small concentration of inhibitors, but molybdate was a better inhibitor over a wide concentration range of inhibitors. A kinetic study of cold rolling steel in uninhibited and inhibited acid was also discussed. Various parameters such as rate constant k and the kinetic parameter B were calculated for the reactions of corrosion. Polarization curves showed that both molybdate and tungstate are mixed-type inhibitors in acidic media.     

双相TiAl合金α2／γ面电子结构计算与增韧机制分析

基于余氏固体与分子经验电子理论(EET)和程氏改进的TFD理论提出了计算双相TiAl合金层片状结构α2／γ界面电子结构的计算模型与方法，计算了含常用合金元素的单相TiAl合金与双相TiAl合金中的异相界面的电子结构，利用界面电子结构给出的信息-界面结合因子ρ，Δρ,σ，以合金元素Mn为例初步分析讨论了双相TiAl合金层片状结构增加韧性的微观机制。     

护环液压胀形法的新发展及外补液胀形法的生产应用

本文论述了现有液压胀形法生产护环所存在的不足,介绍了新一代液压胀形工艺即外补液胀形的原理、优点,以及在我国首次生产应用中所显示出的明显的技术经济效益。     

场效应晶体管弧焊逆变器可靠性研究

本文讨论了功率MOSFET晶体管弧焊逆变器的工作可靠性及其影响因素，并指出了弧焊逆变器设计中应注意的问题。     

汽车检测系统可靠性分析与提高

采集、分析整理了大量的国内汽车检测线运行故障记录,并确定了主要的故障模式及原因.根据专家评判法,应用模糊综合评价理论对故障模式进行了可靠性分析.根据故障的可靠性评价指标,确定了测控系统的可靠性薄弱环节,并制定了相应的可靠性改进措施.实践证明,经过可靠性改进,系统的故障率大大地降低.     

长轴表面激光淬火变形与控制

应用激光淬火强化技术控制长轴的淬火变形，分析了激光淬火变形的原因和影响因素。研究结果表明，激光淬火不仅可使长轴振摆变形量控制在很小的范围内，而且可将已变形的长轴校直到很高的精度。     

Novel Ag-AgBr decorated composite membrane for dye rejection and photodegradation under visible light

Photocatalytic membranes have received increasing attention due to their excellent separation and photodegradation of organic contaminants in wastewater. Herein, we bound Ag-AgBr nanoparticles onto a synthesized polyacrylonitrile-ethanolamine (PAN-ETA) membrane with the aid of a chitosan (CS)-TiO₂ layer via vacuum filtration and in-situ partial reduction. The introduction of the CS-TiO₂ layer improved surface hydrophilicity and provided attachment sites for the Ag-AgBr nanoparticles. The PAN-ETA/CS-TiO₂/Ag-AgBr photocatalytic membranes showed a relatively high water permeation flux (~ 47 L·m^–2·h^–1·bar^–1) and dyes rejection (methyl orange: 88.22%; congo red: 95%; methyl blue: 97.41%; rose bengal: 99.98%). Additionally, the composite membranes exhibited potential long-term stability for dye/salt separation (dye rejection: ~97%; salt rejection: ~6.5%). Moreover, the methylene blue and rhodamine B solutions (20 mL, 10 mg·L⁻¹) were degraded approximately 90.75% and 96.81% in batch mode via the synthesized photocatalytic membranes under visible light irradiation for 30 min. This study provides a feasible method for the combination of polymeric membranes and inorganic catalytic materials.