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Magnetic Study on Kondo Semiconductor CeNiSn

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Chinese Physics Letters 1998年第2期15卷 131-133页

作者： hou yu-min JIN Duo YANG Fu-ming RAN Qi-ze WANG yu-peng CHEN Zhao-jia HE yu-sheng Cryogenic Laboratory Chinese Academy of SciencesBeijing 100080 Institute of Physics Chinese Academy of SciencesBeijing 100080

There are two standpoints to explain the formation of the peak of magnetic susceptibility versus temperature in *** is the presence of the pseudo-gapped density of states(DOS)while the other is the development of an antiferromagnetic *** check which one is more reasonable,an experiment is designed on measuring magnetic susceptibility under different magnetic *** is found that magnetic field can shift the peak of the magnetic susceptibility to lower temperatures while by calculation the presence of the pseudo-gapped DOS cannot shift the peak,which gives another evidence of the existence of antiferromagnetic correlations and is discussed in the light of some recent theoretical model.

关键词： correlation. Kondo susceptibility

刚性曲面障板散射对多模球形水听器测向的影响

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声学技术 2005年第2期24卷 94-97,124页

作者：侯玉敏毛卫宁东南大学无线电工程系南京210096

文章将板块元法应用于收-发分置时近场散射声场的计算,讨论了存在刚性曲面障板时障板散射对多模球形水听器测向的影响。研究结果表明,刚性曲面障板会使水听器在某些方位出现较大的测向误差,此时目标信号频率和俯仰角变化也会对测向产生... 详细信息

文章将板块元法应用于收-发分置时近场散射声场的计算,讨论了存在刚性曲面障板时障板散射对多模球形水听器测向的影响。研究结果表明,刚性曲面障板会使水听器在某些方位出现较大的测向误差,此时目标信号频率和俯仰角变化也会对测向产生较大的影响。存在刚性曲面障板时,等效声中心不对称对测向误差的影响较小,而等效声中心不共面对测向误差的影响要比不对称时明显得多。

关键词：多模球形水听器板块元法曲面障板散射测向

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通过磁表面等离激元的多重相干提高灵敏度

中国光学（中英文） 2023年第2期16卷 458-465页

作者：杨宗蒙邢前陈怡安侯玉敏北京大学物理学院人工微结构与介观物理国家重点实验室北京100871

本文研究了一维金属纳米狭缝阵列中磁表面等离激元的相干现象,并提出了一种双谷传感方法以提高灵敏度。与通常所采用的固定入射角度进行波长扫描的方式不同,本文采用固定波长改变入射角度的方式研究表面等离激元的相干现象。由于延迟效... 详细信息

本文研究了一维金属纳米狭缝阵列中磁表面等离激元的相干现象,并提出了一种双谷传感方法以提高灵敏度。与通常所采用的固定入射角度进行波长扫描的方式不同,本文采用固定波长改变入射角度的方式研究表面等离激元的相干现象。由于延迟效应的存在,随着周围介质折射率的变化,两个谷会向相反的方向移动。相比于使用单一谷进行标定的方式,两个相反方向移动的谷可以有效提高灵敏度。用于标定的两个谷单独的灵敏度最大分别为39.2°/RIU和102.4°/RIU,而双谷标定的总灵敏度可达141.6°/RIU。此外,狭缝介质与上层介质的折射率不一致对传感性能的影响很小,故其有广泛的应用前景。

关键词：表面等离激元折射率传感器相干金属光栅

Experimental Observing Damage Evolution in Cement Pastes Exposed to External Sulfate Attack by in situ X-ray Computed Tomography

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 164-170页

作者： WU min CAO Kailei XIAO Weirong yu Zetai CAO Jierong DING Qingjun LI Jinhui China Railway Construction Corporation Harbour and Channel Engineering Bureau Group Co. LTDZhuhai 519000China Con-struction Headquarters of Zhoushan Liuheng Bridge Phase II Project Zhoushan 316000China China Railway Construction Bridge En-gineering Bureau Group Co. LTDTianjin 300000China State Key Laboratory of Silicate Material for Architecture(Wuhan University of Technology) Wuhan 430070China College of Materials Science and Engineering Wuhan Textile UniversityWuhan 430200China

The paper presents experimental investigation results of crack pattern change in cement pastes caused by external sulfate attack(ESA).To visualize the formation and development of cracks in cement pastes under ESA,an X-ray computed tomography(X-ray CT)was used,i e,the tomography system of Zeiss Xradia 510 *** results indicate that X-CT can monitor the development process and distribution characteristics of the internal cracks of cement pastes under ESA with attack *** addition,the C3A content in the cement significantly affects the damage mode of cement paste specimens during sulfate *** damage of ordinary Portland cement(OPC)pastes subjected to sulfate attack with high C3A content are severe,while the damage of sulfate resistant Portland cement(SRPC)pastes is much smaller than that of OPC ***,a quadratic function describes the correlation between the crack volume fraction and development depth for two cement pastes immermed in sulfate solution.

关键词： concrete external sulfate attack damage evolution situ X-ray computed tomography

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天然气液化装置制冷方法探讨

天然气工业 2005年第10期25卷 120-123页

作者：赵红利侯予张敏陈纯正西安交通大学制冷与低温工程研究所

回顾了国内外几种比较成熟的天然气液化装置中采用的制冷方法(复叠式制冷循环、混合制冷剂循环、膨胀制冷循环等)以及该领域最新的研究进展,并对其进行了分析比较。在此基础上介绍了一种新式液化天然气的制冷方法——吸收制冷循环。该... 详细信息

回顾了国内外几种比较成熟的天然气液化装置中采用的制冷方法(复叠式制冷循环、混合制冷剂循环、膨胀制冷循环等)以及该领域最新的研究进展,并对其进行了分析比较。在此基础上介绍了一种新式液化天然气的制冷方法——吸收制冷循环。该方法利用溶液浓度的变化来获取冷量,即制冷剂在一定压力下蒸发吸热,再利用吸收剂吸收冷剂蒸气,这种循环系统不仅适用于海上天然气液化装置,同时也适合于太阳能、地热能丰富的地区,既可降低产品成本又可实现废物利用。最后,还针对液化天然气运输、储存过程蒸气的产生,介绍了几种运输及储存装置中辅助制冷方法G-M制冷机和Stirling制冷机、相变制冷、脉管制冷机。

关键词：天然气液化制冷方法装置液化天然气储存液化天然气管道蒸气辅助制冷吸收制冷循环液化天然气

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进口导向叶片热气防冰系统试验

上海交通大学学报 2010年第11期44卷 1579-1582页

作者：董葳侯玉柱闵现花上海交通大学机械与动力工程学院上海200240

通过设计导向叶片热气防冰试验方案,开展了针对不同的外部结冰来流参数条件下导向叶片的防冰试验研究.得到了不同防冰热气引气流量下导向叶片表面温度的变化情况,通过摄像记录了整个试验过程.了解了防冰热气引气流量不足情况下导向叶片... 详细信息

通过设计导向叶片热气防冰试验方案,开展了针对不同的外部结冰来流参数条件下导向叶片的防冰试验研究.得到了不同防冰热气引气流量下导向叶片表面温度的变化情况,通过摄像记录了整个试验过程.了解了防冰热气引气流量不足情况下导向叶片前缘以及叶盆的结冰情况.试验结果对于分析叶片结冰状态下表面流动换热机理,优化设计叶片内部热气流道,提高进口导向叶片的防冰能力有重要参考价值.

关键词：航空发动机热气防冰冰风洞进口导叶换热试验

Low-temperature chlorination roasting technology for the simultaneous recovery of valuable metals from spent LiCoO_(2)cathode material

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International Journal of minerals,Metallurgy and Materials 2025年第1期32卷 80-91页

作者： Junjie Shi Changle hou Jingjing Dong Dong Chen Jianzhong Li Key Laboratory for Ecological Metallurgy of Multimetallic mineral(ministry of Education) Northeastern UniversityShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China

With the continuous increase in the disposal volume of spent lithium-ion batteries(LIBs),properly recycling spent LIBs has become essential for the advancement of the circular *** study presents a systematic analysis of the chlorination roasting kinetics and proposes a new two-step chlorination roasting process that integrates thermodynamics for the recycling of LIB cathode *** activation energy for the chloride reaction was 88.41 kJ/mol according to thermogravimetric analysis–derivative thermogravimetry data obtained by using model-free,model-fitting,and Z(α)function(αis conversion rate).Results indicated that the reaction was dominated by the first-order(F1)model when the conversion rate was less than or equal to 0.5 and shifted to the second-order(F2)model when the conversion rate exceeded *** conditions were determined by thoroughly investigating the effects of roasting temperature,roasting time,and the mass ratio of NH_(4)Cl to LiCoO_(2).Under the optimal conditions,namely 400℃,20 min,and NH_(4)Cl/LiCoO_(2)mass ratio of 3:1,the leaching efficiency of Li and Co reached 99.43% and 99.05%,*** of the roasted products revealed that valuable metals in LiCoO_(2)transformed into CoCl_(2) and ***,the reaction mechanism was elucidated,providing insights for the establishment of a novel low-temperature chlorination roasting technology based on a crystal structure *** technology can guide the development of LIB recycling processes with low energy consumption,low secondary pollution,high recovery efficiency,and high added value.

关键词： spent lithium-ion battery thermodynamics chlorination roasting kinetics circular economy

Systematic Acupuncture Explains Acupuncture at Baihui(GV20) and Fengchi(GB20) Targeting the Inflammatory Response to Regulate Migraine

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Journal of Traditional Chinese Medicine 2025年

作者： min yu ZHENG Meifeng SUN Ju PENG Zetong CAO Zhixian HUANG Xiaohua Medical College of Acu-Moxi and Rehabilitation， Guangzhou University of Chinese Medicine Department of Rehabilitation Medicine， the Affiliated Panyu Central Hospital of Guangzhou Medical University

Objective: To take Baihui (GV20) and Fengchi (GB20) targeting inflammatory response to regulate migraine as an example to describe a new method for studying the mechanism of stimulating ***: The target information of Baihui (GV20) and Fengchi (GB20) was retrieved， and after intersection with migraine， Kyoto Encyclopedia of Genes and Genomes (KEGG)， Reactome， and UniProt Keywords were used for functional enrichment. After selecting the main pathway， rats were selected and nitroglycerin was used for modeling， and the behavioral scores， inflammatory factors， heme oxygenase 1 (HMOX1)， protein kinase B (AKT1)， signal transducer and activator of transcription 3 (STAT3)， phosphorylated extracellular signal-regulated kinase 1/2 (P-ERK1/ERK2) and other states of the rats in the acupuncture， twisting， and electroacupuncture groups were ***: A total of 135 Baihui (GV20) targets and 27 Fengchi (GB20) targets were collected. A total of 73 target information were obtained after the intersection of these targets in migraine. These 73 targets have three main pathways: hypoxia-inducible factor 1 (HIF-1) signaling pathway， signaling by interleukins and inflammatory response. The main targets in the pathway were verified and found that interleukin-1 beta (IL-1β)， interleukin-6 (IL-6)， tumor necrosis factor-alpha (TNF-α) and HMOX1， AKT1， STAT3， P-ERK1/ERK2 can be regulated by Baihui (GV20) and Fengchi (GB20).Conclusion: Baihui (GV20) and Fengchi (GB20) can regulate migraine by regulating inflammatory factors and HMOX1， AKT1， STAT3， P-ERK1/ERK2 and other changes in HIF-1 signaling pathway， Signaling by Interleukins and Inflammatory response pathways. Based on systems biology and network pharmacology， and with the model of "acupoint-target-disease"， explore the research methods of systematic acupuncture and moxibustion. We believe this is a usable research direction for exploring the mechanism of acupuncture stimulation.

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计算存储一体的体系结构研究与实现

计算机工程与设计 2018年第5期39卷 1310-1313页

作者：马千里侯毓敏何虎清华大学微电子学研究所北京100084

为减少访问存储器所带来的延迟,提高数据访问速率,设计一种计算存储一体的体系结构。将计算单元集成在存储器中,使计算直接在数据所在处进行,缩短数据访问的路径,减小延时和功耗。自主设计一款支持顺序超标量和超长指令字两种模式的微... 详细信息

为减少访问存储器所带来的延迟,提高数据访问速率,设计一种计算存储一体的体系结构。将计算单元集成在存储器中,使计算直接在数据所在处进行,缩短数据访问的路径,减小延时和功耗。自主设计一款支持顺序超标量和超长指令字两种模式的微处理器,该处理器具有高性能、低功耗的特点,适合用作上述结构中的计算单元。通过MapReduce等部分程序在现场可编程门阵列平台上的测试验证并与传统计算结构进行对比,结果表明,性能提高约60%,功耗降低约95%,验证了该结构的高可靠性和有效性。

关键词：计算存储一体现场可编程门阵列微处理器大数据存储器