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电缆测温系统在工厂供配电系统中的应用

阎红

《中国工程科学》 2007年 第9卷 第11期   页码 172-174

摘要:

探讨了在工矿企业中10kV高压电缆在线运行温度检测的必要性与实际应用;列举了感温元件 的选型方法以及温度监测系统的组成与运行;介绍了信息处理软件和故障诊断专家系统软件、电力设备底层 信息网、现场总线技术在电力系统中的应用;实现了不停电状态下对高压电缆接头等各种电缆的故障 在线监测及诊断功能。

关键词: 10kV高压电缆     终端头     温度传感器     监测系统    

一类基于改进Weibull分布模型的电力电缆寿命评估方法

张铁岩,王承民,孙秋野,张化光

《中国工程科学》 2008年 第10卷 第10期   页码 42-46

摘要:

电缆的剩余寿命进行评估是电缆寿命管理的关键环节,以往电缆寿命评估的方法中有Arrhenius方法和Weibull分布模型。对这两种方法分别进行分析,特别是确定Arrhenius模型中激活能的计算,以及应用Weibull分布模型对电缆寿命进行评估。最后以实际电缆的状态监测数据,对简化的Arrhenius模型进行仿真,说明所提出的方法是有效的。

关键词: 电缆     寿命评估     Arrhenius模型     Weibull分布    

大规模新能源发电经直流送出的技术挑战与思考 Review

王伟胜, 李光辉, 郭剑波

《工程(英文)》 2022年 第19卷 第12期   页码 252-267 doi: 10.1016/j.eng.2022.04.017

摘要: 高压直流输电送端已初步形成高比例新能源、高比例电力电子的局部双高电力系统。与以同步发电机为主导的传统电力系统相比,系统运行特性发生了深刻变化,逐渐出现宽频振荡和暂态过电压等新型稳定问题,导致大规模新能源脱网事故频发,传统电力系统的分析方法和设计原则面临挑战。本文针对双高电力系统的特性认知、作用机理、分析方法、研究手段、工程应用开展研究,明确宽频振荡和暂态过电压产生机理,提出小信号阻抗分析方法和电磁暂态仿真研究手段相结合的技术路线,研究成果已在我国华北、西北和东北地区新能源基地经直流送出重大工程中得到验证最后,针对未来建设以新能源为主体的新型电力系统给出思考与建议。

关键词: 宽频振荡     双高电力系统     高压直流输电     新能源发电     暂态过电压    

表面驱动高压工艺 Perspective

Keith E. Gubbins, Kai Gu, Liangliang Huang, Yun Long, J. Matthew Mansell, Erik E. Santiso, Kaihang Shi, Małgorzata Ś liwińska-Bartkowiak, Deepti Srivastava

《工程(英文)》 2018年 第4卷 第3期   页码 311-320 doi: 10.1016/j.eng.2018.05.004

摘要:

许多化学过程都要在高压下进行,因为高压状态能提高产率,加快化学反应的速率,分离过程中提高溶剂功率,并通过增加分子能量和分子碰撞率来克服活化作用的障碍。然而,在工业规模上,高压工艺目前正受到压缩成本和有限材料的约束,因此很少有工业过程能够在在压力超过25 MPa的情况下进行。本文提出了一种高压工艺的替代方法,即利用来自固体底物的表面驱动的相互作用产生非常高的局部压力。近期的实验和分子模拟表明,这种相互作用可以产生高达数万巴的局部压力,某些情况下甚至可以达到数百万巴。由于活跃的高压区域分布不均匀,压力在不同方向上存在差异。在许多情况下,增强最多的是平行于底物表面的压力(切向压力)。这种压力是施加在要加工的分子上的,而不是施加在固体底物或容器上。本文综述了现阶段对这种增压的认识,并讨论了一种基于表面驱动力的可行方法来达到高压处理的效果。这种表面驱动高压处理的优点在于,相比传统的整体相位处理,它能达到更高的压力,因为它不需要机械压缩。

关键词: 限制     高压     高压    高压反应     高压制造     高压化学工艺    

论中国电缆工业的废杂铜直接再生制杆和以铝节铜

黄崇祺

《中国工程科学》 2008年 第10卷 第5期   页码 10-18

摘要:

当前我国电缆工业“废杂铜的直接再生制杆”和“以铝节铜”已成为关注的“热点&rdquo

关键词: 废杂铜     再生         电缆工业    

PM10 emissions from industrial coal-fired chain-grate boilers

Xinghua Li, Junzan Han, Lei Duan

《环境科学与工程前沿(英文)》 2017年 第11卷 第6期 doi: 10.1007/s11783-017-0966-y

摘要: Industrial coal-fired boiler is an important air pollutant emission source in China. The chain-grate boiler is the most extensively used type of industrial coal-fired boiler. An electrical low-pressure impactor, and a Dekati Low Pressure Impactor were applied to determine mass and number size distributions of PM at the inlet and the outlet of the particulate emission control devices at six coal-fired chain-grate boilers. The mass size distribution of PM generated from coal-fired chain-grate boilers generally displays a bimodal distribution that contains a submicron mode and a coarse mode. The PM in the submicron mode for burning with raw coal contributes to 33%±10 % of PM emissions, much higher than those for pulverized boilers. And the PM in the submicron mode for burning with briquette contributes up to 86 % of PM emissions. Multiclones and scrubbers are not efficient for controlling PM emission. Their average collection efficiencies for sub-micron particle and super-micron particle are 34% and 78%, respectively. Operating conditions of industrial steam boilers have influence on PM generation. Peak of the submicron mode during normal operation period is larger than the start-up period.

关键词: coal-fired chain-grate boiler     PM10     size distribution     particulate emission control devices     size-dependent collection efficiency    

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

《医学前沿(英文)》   页码 957-971 doi: 10.1007/s11684-023-0988-8

摘要: Primary ciliary dyskinesia (PCD) is a congenital, motile ciliopathy with pleiotropic symptoms. Although nearly 50 causative genes have been identified, they only account for approximately 70% of definitive PCD cases. Dynein axonemal heavy chain 10 (DNAH10) encodes a subunit of the inner arm dynein heavy chain in motile cilia and sperm flagella. Based on the common axoneme structure of motile cilia and sperm flagella, DNAH10 variants are likely to cause PCD. Using exome sequencing, we identified a novel DNAH10 homozygous variant (c.589C > T, p.R197W) in a patient with PCD from a consanguineous family. The patient manifested sinusitis, bronchiectasis, situs inversus, and asthenoteratozoospermia. Immunostaining 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 flagella. Subsequently, 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 hydrocephalus. To 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    

Innate immune checkpoint Siglec10 in cancers: mining of comprehensive omics data and validation in patient

《医学前沿(英文)》 2022年 第16卷 第4期   页码 596-609 doi: 10.1007/s11684-021-0868-z

摘要: Sialic acid binding Ig-like lectin 10 (Siglec10) is a member of innate immune checkpoints that inhibits the activation of immune cells through the interaction with its ligand CD24 on tumor cells. Here, by analyzing public databases containing 64 517 patients of 33 cancer types, we found that the expression of Siglec10 was altered in 18 types of cancers and was associated with the clinical outcomes of 11 cancer types. In particular, Siglec10 was upregulated in patients with kidney renal clear cell carcinoma (KIRC) and was inversely associated with the prognosis of the patients. In 131 KIRC patients of our settings, Siglec10 was elevated in the tumor tissues of 83 (63.4%) patients compared with that in their counterpart normal kidney tissues. Moreover, higher level of Siglec10 was associated with advanced disease (stages III and IV) and worse prognosis. Silencing of CD24 in KIRC cells significantly increased the number of Siglec10-expressing macrophages phagocytosing KIRC cells. In addition, luciferase activity assays suggested that Siglec10 was a potential target of the transcription factors c-FOS and GATA1, which were identified by data mining. These results demonstrate that Siglec10 may have important oncogenic functions in KIRC, and represents a novel target for the development of immunotherapies.

关键词: innate immune checkpoint     Siglec10     kidney renal clear cell carcinoma    

Possible role of power-to-vehicle and vehicle-to-grid as storages and flexible loads in the German 110 kV

Erik BLASIUS

《能源前沿(英文)》 2017年 第11卷 第2期   页码 146-154 doi: 10.1007/s11708-017-0475-5

摘要: The sectoral coupling of road traffic (in form of E-Mobility) and electrical energy supply (known as power-to-vehicle (P2V), vehicle-to-grid (V2G) is discussed as one of the possible development concepts for the flexible system integration of renewable energy sources (RES) and the support of the objectives of the German energy transition (aka. Energiewende). It is obvious that E-mobility, which shall produce as few emissions as possible, should be based on the exclusive use of renewable energies. At the same time, the E-mobility can help to reduce the negative effects of the grid integration of RES to the distribution grids. However, this assumes that the electric vehicles are smart integrated to the grids where they charge, meaning that they must be able to communicate and be controllable. Because per se unplanned and uncontrollable charging processes are harmful for the grid operation, especially if they occur frequently and unexpected in similar time periods, the effects can hardly be controlled and can lead to serious technical problems in practical grid operation. This paper provides an insight into the current development of E-mobility in Germany. The insight will be matched with the German development of the RES. By the combination of both sectors, the possible role of the E-mobility for the distribution grid will be depicted, which can have positive and negative aspects.

关键词: P2V     V2G     grid integration     electric vehicles     distribution grid    

大规模海上风电场输电方式的探讨

朱宜飞,陶铁铃

《中国工程科学》 2010年 第12卷 第11期   页码 89-92

摘要:

分析了大规模海上风电场的并网需求,比较了高压交流输电系统、基于电网换相换流器的高直流输电系统和电压源换流器的直流输电系统的技术特点,对系统损耗做了数值分析

关键词: 海上风电     高压交流输电     高压直流输电     电网换相换流器     电压源换流器    

决策树技术在电缆绝缘状态评估中的应用

孙秋野,张化光,张铁岩

《中国工程科学》 2010年 第12卷 第2期   页码 90-94

摘要:

电缆的绝缘状态通常可以分为良好、不好、差和故障等几种,以电缆的日常检修数据、试验数据和在线监测数据为基础,对电缆的状态进行判断是一个非常有意义的课题采用决策树分类技术来对电缆的绝缘状态进行分类,分别对各种类型数据形成子树,然后通过子树合成技术形成最终的决策树,从而对电缆的绝缘状态进行判断。通过一个实际电缆的各种数据,采用SPSS软件进行实际应用,最终的仿真结果说明决策树技术是一种非常有效的电缆绝缘状态分类技术。

关键词: 决策树     分类     数据挖掘     电缆绝缘    

高压高产含硫气井测试技术及应用

王世泽,唐瑞江, 赵祚培,杜林

《中国工程科学》 2010年 第12卷 第10期   页码 56-60

摘要: 在川东北高含硫气井测试实践与经验基础上,形成了高压高产含硫气井测试技术。

关键词: 高压高产     含硫     气藏     测试    

The most influential “Top 10 Events” in carbon neutrality and climate change in 2022

《能源前沿(英文)》 2023年 第17卷 第1期   页码 1-4 doi: 10.1007/s11708-023-0869-5

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Effect of IL-10 on formation of foam cell induced by ox-LDL

WANG Fei, DAI Yalei, XU Ting, XU Bo, WANG Kaifeng

《医学前沿(英文)》 2008年 第2卷 第3期   页码 298-302 doi: 10.1007/s11684-008-0057-3

摘要: Atherosclerosis is a chronic disease that causes various cardiovascular complications. It has been realized that cellular and humoral immunity plays crucial roles in atherogenic lesion formation. In this study the effects of lipopolysaccharide (LPS) and interleukin-10 (IL-10) on the formation of foam cells during the early stages of atherosclerosis have been investigated. Macrophage was induced by phorbol myristate acetate (PMA) treatment on THP-1 cells. The cells were further stimulated by ox-LDL, ox-LDL plus LPS, ox-LDL plus IL-10 and LPS. By using an oil red O staining technique, the formation of foam cells was evaluated by lipid granules formation in the cells. The ratio of foam cell formation was increased from (9.77 ± 1.70)% to (16.27 ± 2.27)% after 24 h stimulation with ox-LDL, and the increase was observed with incubating time. The foam cells were significantly increased in the presence of LPS in a dose-dependent manner. The maximum increase of about 40% was observed. However, the significant elevation by LPS was abrogated when IL-10 was added. These results indicated that IL-10 can effectively prevent the formation of foam cells induced by ox-LDL with or without LPS. This study demonstrates that ox-LDL can cause foam cell formation from macrophages . LPS can significantly accelerate this event. IL-10, an anti-inflammatory cytokine, can inhibit the effect of ox-LDL and LPS. These results indicate that inflammatory effects in blood vessels can speed up foam cell formation. The inhibitive effect of IL-10 is an important factor for delaying atherosclerosis processes.

关键词: inflammatory     presence     interleukin-10     dose-dependent     ox-LDL    

Preface of special issue of the 10 th International Conference on CO 2 Utilization

Changjun LIU,

《化学科学与工程前沿(英文)》 2010年 第4卷 第2期   页码 109-109 doi: 10.1007/s11705-009-0258-6

标题 作者 时间 类型 操作

电缆测温系统在工厂供配电系统中的应用

阎红

期刊论文

一类基于改进Weibull分布模型的电力电缆寿命评估方法

张铁岩,王承民,孙秋野,张化光

期刊论文

大规模新能源发电经直流送出的技术挑战与思考

王伟胜, 李光辉, 郭剑波

期刊论文

表面驱动高压工艺

Keith E. Gubbins, Kai Gu, Liangliang Huang, Yun Long, J. Matthew Mansell, Erik E. Santiso, Kaihang Shi, Małgorzata Ś liwińska-Bartkowiak, Deepti Srivastava

期刊论文

论中国电缆工业的废杂铜直接再生制杆和以铝节铜

黄崇祺

期刊论文

PM10 emissions from industrial coal-fired chain-grate boilers

Xinghua Li, Junzan Han, Lei Duan

期刊论文

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

期刊论文

Innate immune checkpoint Siglec10 in cancers: mining of comprehensive omics data and validation in patient

期刊论文

Possible role of power-to-vehicle and vehicle-to-grid as storages and flexible loads in the German 110 kV

Erik BLASIUS

期刊论文

大规模海上风电场输电方式的探讨

朱宜飞,陶铁铃

期刊论文

决策树技术在电缆绝缘状态评估中的应用

孙秋野,张化光,张铁岩

期刊论文

高压高产含硫气井测试技术及应用

王世泽,唐瑞江, 赵祚培,杜林

期刊论文

The most influential “Top 10 Events” in carbon neutrality and climate change in 2022

期刊论文

Effect of IL-10 on formation of foam cell induced by ox-LDL

WANG Fei, DAI Yalei, XU Ting, XU Bo, WANG Kaifeng

期刊论文

Preface of special issue of the 10 th International Conference on CO 2 Utilization

Changjun LIU,

期刊论文