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Experimental Investigation and Modelling for the Optimisation of Conduction Cooled HTS Hybrid Current Leads for SMES

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Transactions of Tianjin University 2003年第1期9卷 16-20页

作者：程德威王惠龄 Spiller D M huang y B 饶荣水唐跃进 SuperconductingElectricPowerResearchandDevelopmentCentre HuazhongUniversityofScienceandTechnology BICCSuperconductors OakRoad

It′s important that HTS tapes have lower thermal conductivity and higher transversal resistivity in order to reduce the heat leaks conducted along the tapes and AC losses in the high temperature superconducting system conduction cooled by GM coolers. This paper presents an experimental investigation into the effects of pure Ag and AgAu alloys sheath materials on the properties of Bi(2223) multifilamentary tapes and the optimisation of conduction cooled hybrid current leads made from copper and Bi(2223)/Ag or Bi(2223)/AgAu tapes. The thermal conductivity of the tapes were measured by cryogenic steady heat flux method and the resistance was measured by using standard DC four probe method at low temperature. The results showed that the reduction of thermal conductivity by the addition of Au into the sheath material of Bi(2223) tapes was 65 0 0, 75 0 0 and 85 0 0 lower than that of pure Ag sheathed Bi(2223) tapes and the increase of resistivity was 4.9 , 10 and 19.4 times higher than that of pure Ag for the addition of 2.2 0 0, 5.7 0 0 and 10.7 0 0Au(atom ratio) respectively. And the study also attempts to optimise thermodynamically the conduction cooled hybrid current lead by using a developed model, which took the irreversibility of commercial GM coolers, the contact resistance and thermal conductance into account. Predictions from the model showed that AgAu alloys were suitable candidate materials to replace Ag as sheath material of Bi(2223) tapes applied in HTS current leads. In addition, Bi(2223)/AgAu was a suitable material to be applied as the HTS section of hybrid current leads in conduction cooled superconducting electric systems.

关键词： Bi(2223) tape thermodynamic optimisation current lead conduction cooled superconducting magnetic energy storage

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Sensitive Mechanochromisms Based on a Polymer Bilayer Structure

Sensitive Mechanochromisms Based on a Polymer Bilayer Struct...

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中国化学会2017全国高分子学术论文报告会

作者： Songshan Zeng Dianyun Zhang Wenhan huang Zhaofeng Wang Stephan G.Freire Xiaoyuan yu ANDrew T.Smith Emily y.huang Helen Nguon Luyi Sun Department of Chemical & Biomolecular Engineering and Polymer Program Institute of Materials ScienceUniversity of Connecticut Department of Mechanical Engineering University of Connecticut School of Mechanical and Electrical Engineering Heyuan Polytechnic Institute of Biomaterial College of Materials and EnergySouth China Agricultural University

We have designed a series of mechanochromic devices inspired by nature with the capabilities of changing transparency and "switching on/off" luminescence in response to mechanical stimuli. The key to accomplish these excellent optical properties is to control strain-induced surface engineering,that is,the longitudinal cracks opening and transverse invaginated folds. All of these devices are comprised of a rigid thin layer atop polydimethylsiloxane（PDMS） based elastomer,which can be facilely and quickly fabricated. For transparency change mechanochromism,the folds and cracks with excellent light trapping and scattering capabilities can endow high opaqueness to the originally highly transparent samples. The evolution of crack opening and fold–ridge mechanisms are captured through finite analysis that incorporates damage and cracks in the rigid thin layer. For luminescent mechanochromism,the strain-tunable cracks on the UV shield layer act as "gates" to mediate the traveling of UV light to "switch on/off" the luminescence of mechanochromism. This device exhibits a remarkably high strain responsive sensitivity,demonstrating an excellent sensing capability for detecting mechanical failure or damage. All the mechanochromisms also show outstanding durability and reversibility.

关键词： mechanochromism crackformation strain luminescence

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冷轧对非取向硅钢带磁特性的影响

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电子变压器技术 2001年第1期23卷 32-36页

作者： B.y.huang 徐峰等

用多种方法将非取向3％硅钢带冷轧至0.1mm后，在温度为900℃的氩气中将其以0．025℃/s的冷却速度退火1．5个小时。其磁特性随所用的冷轧方法不同而有所变化。用文本介绍的方法获得了一种具有双向易磁化、强（100）立体晶系结构的样品。... 详细信息

用多种方法将非取向3％硅钢带冷轧至0.1mm后，在温度为900℃的氩气中将其以0．025℃/s的冷却速度退火1．5个小时。其磁特性随所用的冷轧方法不同而有所变化。用文本介绍的方法获得了一种具有双向易磁化、强（100）立体晶系结构的样品。该样品在垂直的两个方向L和T交替进行了冷轧，而且还须经中间退火。该样品的平均晶粒直径为57μm。该样品在800A／m下L、T方向上的磁感应分别为1．65T和1．62T。

关键词：非取向硅钢带冷轧转矩曲线磁感应磁性

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Identification and characterization of NBEAL1, a novel human neurobeachin-like 1 protein gene from fetal brain, which is up regulated in glioma

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第二军医大学学报 2005年第2期26卷 232-232页

作者： Chen J Lu y Xu J huang y Cheng H Hu G Luo C Lou M Cao G Xie y ying K Department of Neurosurgery ChangZheng Hospital Second Military Medical University Shanghai 200003China

The Beige and Chediak-Higashi (BEACH) domain is highly conserved in a large family of eukaryotic proteins, and is crucial for their functions in vesicle trafficking, membrane dynamics and receptor signaling. From a fetal brain cDNA library, we isolated a cDNA of 3858 bp encoding a novel human BEACH protein, which was named as human neurobeachin-like 1 (NBEAL1) gene. The cDNA had an open reading frame (ORF) of 3006 bp encoding a putative 1001 amino acid protein. The NBEAL1 gene was located on human chromosome 2q33-2q34 and consisted of 25 exons spanning about 73 kb of the human genome. PSORT analysis indicated that the NBEAL1 protein contained a vacuolar-targeting motif ILPK, which suggested the protein might be located in the cell lysosome. The expression pattern was examined by reverse transcription/polymerase chain reaction (RT-PCR), which showed that the transcripts were highly expressed in the human brain, kidney, prostate, and testis while lowly in the ovary, small intestine, colon and peripheral blood leukocyte. In addition, the RT-PCR result of and Northern blot showed that the novel gene was highly expressed in the biopsies of different grade glioma, especially in that of lower grade ones, which suggested it might be correlative with the glioma.

关键词： reverse transcription expression pattern peripheral blood Northern blot human genome cDNA library human brain novel gene amino acid

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2D DOA Estimation of Coherent Signals with a Separated Linear Acoustic Vector-Sensor Array

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China Communications 2024年第2期21卷 155-165页

作者： Sheng Liu Jing Zhao Decheng Wu yiwang huang Kaiwu Luo School of Data Science Tongren UniversityTongren 554300China School of Automation Chongqing University of Posts and TelecommunicationsChongqing 400065China

In this paper, a two-dimensional(2D) DOA estimation algorithm of coherent signals with a separated linear acoustic vector-sensor(AVS) array consisting of two sparse AVS arrays is proposed. Firstly,the partitioned spatial smoothing(PSS) technique is used to construct a block covariance matrix, so as to decorrelate the coherency of signals. Then a signal subspace can be obtained by singular value decomposition(SVD) of the covariance matrix. Using the signal subspace, two extended signal subspaces are constructed to compensate aperture loss caused by *** elevation angles can be estimated by estimation of signal parameter via rotational invariance techniques(ESPRIT) algorithm. At last, the estimated elevation angles can be used to estimate automatically paired azimuth angles. Compared with some other ESPRIT algorithms, the proposed algorithm shows higher estimation accuracy, which can be proved through the simulation results.

关键词： acoustic vector-sensor coherent signals extended signal subspace sparse array

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酰胺质子转移加权MRI预测膀胱癌的组织学分级

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国际医学放射学杂志 2022年第6期45卷 735-736页

作者： H.J.Wang Q.Cai y.P.huang M.Q.Li Z.H.Wen y.y.Lin 赵泽豫

摘要膀胱癌高、低级别不同，临床治疗和预后也不同，因此通过影像技术对组织学分级进行术前准确评估至关重要。目的探讨酰胺质子转移加权（APTw）MRI 在评估膀胱癌

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A Statistical Study of Turbulence at Electron Scale in the Earth's Magnetosheath

A Statistical Study of Turbulence at Electron Scale in the E...

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中国空间科学学会空间物理学专业委员会第十五届全国日地空间物理学研讨会

作者： S.y.huang X.H.Deng F.Sahraoui Z.G.yuan J.S.He M.Zhou y.Pang School of Electronic and Information Wuhan University Institute of Space Science and Technology Nanchang University Laboratoire de Physique des Plasmas Ecole Polytechnique91120 PalaiseauFrance School of Earth and Space Sciences Peking University

Turbulence is ubiquitous in space plasmas,such as the terrestrial magnetotail and magnetosheath,the solar wind,or the interstellar *** the solar wind,significant progress has been made on the determination of the properties of magnetic turbulence over a wide range scales ranging from MHD to kinetic scales,in particular from recent observations using the Cluster ***,magnetosheath turbulence is still not fully *** we show recent observations of magnetosheath turbulent spectra over several decades of scales using the Cluster search coil magnetometer data(SCM).We focus particularly on the electron dissipation range corresponding to frequencies in the spacecraft *** the solar wind,magnetosheath turbulence show high amplitude fluctuations,providing thus high Signal-to-Noise-Ratio(SNR)which respect to the sensitivity floor of the Cluster *** allows us to determine unambiguously the actual scaling of the electron dissipation *** show finally how these new observations can help resolving the controversy on the actual nature and scaling(power-law vs exponential)of the dissipation range in space plasmas.

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帘线—橡胶复合材料中裂纹的产生和扩展

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橡胶译丛 1991年第2期25卷 1-13页

作者： y.S.huang 张玉昆

一.引言帘线—橡胶层压材料广泛用于轮胎、胶带和胶管结构中。这种复合材料的主要破坏机理是:在周期性承载条件下,产生层间裂纹,此层间裂纹穿过复合材料结构而扩展,其结果是引起制品脱层和最终破坏。Breidenbach 和 La-ke 研究了层间裂... 详细信息

一.引言帘线—橡胶层压材料广泛用于轮胎、胶带和胶管结构中。这种复合材料的主要破坏机理是:在周期性承载条件下,产生层间裂纹,此层间裂纹穿过复合材料结构而扩展,其结果是引起制品脱层和最终破坏。Breidenbach 和 La-ke 研究了层间裂纹的扩展机理。

关键词：帘线橡胶复合材料裂纹轮胎

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从现代医学与中医学角度认识灼口综合征

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中华口腔医学杂志 2017年第10期52卷 645-648页

作者：周瑜黄小瑾林梅四川大学华西口腔医院口腔黏膜病科/口腔疾病研究国家重点实验室/国家口腔疾病临床医学研究中心成都610041 四川大学华西口腔医院中医科成都610041

灼口综合征（burning mouth syndrome,BMS）是临床常见疾病,主要表现为口腔烧灼样或其他不适感,明显影响患者的生活质量.本文介绍了现代医学与中医学对BMS发生机制的认识和临床诊疗方法,并进行二者间的比较,提出临床诊疗建议.现代医学... 详细信息

灼口综合征（burning mouth syndrome,BMS）是临床常见疾病,主要表现为口腔烧灼样或其他不适感,明显影响患者的生活质量.本文介绍了现代医学与中医学对BMS发生机制的认识和临床诊疗方法,并进行二者间的比较,提出临床诊疗建议.现代医学研究显示,BMS与神经病变、精神因素、内分泌或代谢障碍、药物影响、局部不良刺激等因素有关.中医学则认为BMS主要由饮食失宜、劳逸失度、情志内伤、年老体衰导致.BMS的临床治疗提倡针对患者的个体化特点,现代口腔医学注重心理、系统疾病、口腔局部的综合治疗,中医学的辨证施治、健康养生理念也体现出其临床价值.

关键词：口灼伤综合征口腔医学医学,中国传统

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我国股市作用消费的传导机制研究

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消费经济 2006年第2期22卷 88-90,93页

作者：黄勇王晓国中南大学商学院湖南长沙市410083 南开大学经济学院天津市300061

基于拓宽消费领域和改善消费环境的需要,本文探讨我国股市作用消费的传导机制。研究表明,股市作用消费的传导机制主要有财富效应、q效应和流动性效应;股市作用消费的效果不仅有正负之分,而且有短期和长期之别。股市作用消费的乘数效应... 详细信息

基于拓宽消费领域和改善消费环境的需要,本文探讨我国股市作用消费的传导机制。研究表明,股市作用消费的传导机制主要有财富效应、q效应和流动性效应;股市作用消费的效果不仅有正负之分,而且有短期和长期之别。股市作用消费的乘数效应的大小,取决于边际消费倾向、证券需求的收入弹性和GDP的证券化比率;短期乘数效应,主要取决于证券市场的规模和发育程度;长期乘数效应,由居民的消费偏好、风险偏好与资本市场发育水平共同决定。实证发现,我国股市作用消费的乘数效应不仅存在,而且显著;但牛市作用消费的正效应小于熊市作用消费的负效应。

关键词：股票市场消费需书传导机制乘数效应

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