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A Study on the Temperature Correlation of B-mode Ultrasonic Image Gray for Noninvasive Temperature Monitoring in Hyperthermia

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Chinese Journal of Biomedical Engineering(English Edition) 2006年第1期15卷 26-30页

作者： WU Shui-cai Ren xin-ying Bai Yan-ping zeng Yi Biomedical Engineering Center Beijing University of Technology Beijing 100022 China Biomedical Engineering Center Beijing University of Technology Beijing 100022 China Biomedical Engineering Center Beijing University of Technology Beijing 100022 China Biomedical Engineering Center Beijing University of Technology Beijing 100022 China

This paper deals with the temperature correlation of gray scale of B-mode ultrasound image from heated tissue. In this study, many in-vitro fresh pig livers are heated in a temperature range from 28 ℃ to 45℃, from which a series of B-mode ultrasonic images of livers were obtained. The gray-value is evaluated from the ultrasound images respectively. A correlation of the mean gray value of the selected regions (12×12 pixels) in B-mode ultrasonic images of liver and its temperature was pointed out. And the experiment results agreed the evaluation well. And it is possible to monitor the tissue temperature changing in hyperthermia using this correlation.

关键词： B-mode ultrasound image, Temperature correlation, Hyperthermia

Rapid alkalinization factor:function,regulation,and potential applications in agriculture

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Stress Biology 2023年第1期3卷 164-186页

作者： Ran Zhang Peng-Tao Shi Min Zhou Huai-zeng Liu Xiao-Jing Xu Wen-Ting Liu Kun-Ming chen State Key Laboratory of Crop Stress Biology in Arid Area College of Life SciencesNorthwest A&F UniversityYangling 712100ShaanxiChina

Rapid alkalinization factor(RALF)is widespread throughout the plant kingdom and controls many aspects of plant *** studies on the regulatory mechanism underlying RALF function mainly focus on Arabidopsis,but little is known about the role of RALF in crop ***,we systematically and comprehensively analyzed the relation between RALF family genes from five important crops and those in the model plant Arabidopsis ***-ously,we summarized the functions of RALFs in controlling growth and developmental behavior using conservative motifs as cues and predicted the regulatory role of RALFs in cereal *** conclusion,RALF has considerable application potential in improving crop yields and increasing economic *** gene editing technology or taking advantage of RALF as a hormone additive are effective way to amplify the role of RALF in crop plants.

关键词： RALF Fertilization Stress Crops Molecular regulatory network

Novel Fast Operating Moving Coil Actuator with Compensation Coil for HVDC Circuit Breakers

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CSEE Journal of Power and Energy Systems 2021年第5期7卷 1041-1050页

作者： Boyuan Yin Xianwu zeng John F.Eastham Damian Vilchis-Rodriguez Xiaoze Pei Department of Electronic&Electrical Engineering.University of Bath.Bath.United Kingdom Department of Mechanical Engineering University of Bath.Bath.United Kingdom. Power and Energy Division School of Electrical and Electronic EngineeringThe University of ManchesterManchester M139PLUnited Kingdom.

DC circuit breakers are major enabling components for multi-terminal HVDC *** key design targets are operating speed and *** paper proposes a novel moving coil actuator using a compensation coil topology to operate mechanical circuit *** topology aims to significantly improve the magnetic field saturation and reduce the system inductance,so that the operating speed is *** possible connection methods for the compensation coils are proposed and analyzed using finite element modeling,ensuing simulation results are compared and *** operating speed of the moving coil actuator with compensation coils is significantly improved compared with the original moving coil *** moving coil actuator with compensation coils can open a distance of 5 mm within 2.8 ms and the peak efficiency is 47%.

关键词： Compensation coil DC circuit breaker HVDC mechanical circuit breaker moving coil actuator

Compositionally complex coherent precipitation-strengthened high-entropy alloys:a critical review

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Rare Metals 2022年第6期41卷 2002-2015页

作者： Jin-Xiong Hou Bo-Xuan Cao Bo Xiao zeng-Bao Jiao Tao Yang Department of Materials Science and Engineering City University of Hong KongHong Kong 999077China Hong Kong Institute for Advanced Study City University of Hong KongHong Kong 999077China Department of Mechanical Engineering.The Hong Kong Polytechnic University Hong Kong 999077China

The coherent precipitation-strengthened high-entropy alloys(CPS-HEAs)as a new type of structural materials are expected to possess many unique mechanical properties,such as the outstanding strength-ductility com-bination at cryogenic and room *** from this,most of their strengths can even be well retained at elevated *** compositionally complex matrix and nanoprecipitation phases,as well as the coherent interfaces between them,can potentially bring novel merits of these CPS-HEAs,including sluggish dif-fusion,excellent thermal stability,and controlled magnetic *** that the ductile coherent L1_(2)-nanoparticles can improve the strength of alloys without too much reduction of plasticity,while the coherent B2-nanoparticles strengthened HEAs display completely brittle failure upon tensile test at room *** overview of the alloy design,microstructure evolution,oxidation resistance,mechanical and magnetic properties of CPS-HEAs are briefly discussed *** advantages of multicomponent coherent precipitation-strengthened HEAs as well as the limitations in this field are also *** addition,this review also points out the future research directions and prospects.

关键词： High-entropy alloys Coherent precipitation strengthening Multicomponent intermetallic Mechanical properties Magnetic properties

Changes in Household Size and Structure in China

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China Population Today 1994年第6期11卷 5-8页

作者： Jiang Zhenghua and zeng Yi

ased on the most recent data from the 1990 census, this paper analyses the trend of the changing household size and structure, and the socioeconomic causes beginning in the 1950s. The relationship between the household size and structure and China's population policy is also analyzed in the paper. Two different categories of socioeconomic factors have been identified which operate in opposition to each other, influencing the increase and decrease in the desirability of co-residence of domestic groups. The future household size and structure is determined by both of them.

关键词： Changes in Household Size and Structure in China

ErYb:氟氧化物玻璃陶瓷的上转换发光特征饱和现象的综合分析

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光谱学与光谱分析 2005年第2期25卷 161-165页

作者：陈晓波宋增福北京师范大学应用光学北京重点实验室北京100875 北京大学物理学院北京100871

研究了Er3+和Yb3+双掺的氟氧化物玻璃陶瓷在966nm激光激发下的上转换发光的饱和现象。详细的分析发现了它存在一种能量扩展导致的“特征饱和现象”,也就是说上转换发光强度I随激光功率P而改变的双对数曲线的斜率随着激光光斑的增大而明... 详细信息

研究了Er3+和Yb3+双掺的氟氧化物玻璃陶瓷在966nm激光激发下的上转换发光的饱和现象。详细的分析发现了它存在一种能量扩展导致的“特征饱和现象”,也就是说上转换发光强度I随激光功率P而改变的双对数曲线的斜率随着激光光斑的增大而明显增大至正常的多光子关系。还发现布居耗空所导致的“典型饱和现象”也有较大的影响,它导致了logI-logP曲线会随着激光功率的增加而逐渐弯曲,而激光功率的减小会导致“典型饱和现象”也减小甚至完全消失。

关键词：上转换发光饱和光子双对数曲线 Yb^3+ Er^3+ 发现正常改变现象

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高强电场作用下荔枝酒香气成分变化分析

食品科学 2007年第12期28卷 386-390页

作者：张斌曾新安陈勇岳强曾宪远华南理工大学轻工与食品学院广东广州510640 广东帝浓酒业有限公司广东惠来515226

本实验采用顶空固相微萃取(SPME)及气相色谱-质谱联用(GC-MS)研究了新鲜荔枝酒经高强电场处理后其醇,酸,酯等成分的变化情况。结果表明:经一定条件下的高强电磁场处理后,荔枝酒中辛酸乙酯、己酸乙酯等酯类物质的含量增加,同时生成橙花... 详细信息

本实验采用顶空固相微萃取(SPME)及气相色谱-质谱联用(GC-MS)研究了新鲜荔枝酒经高强电场处理后其醇,酸,酯等成分的变化情况。结果表明:经一定条件下的高强电磁场处理后,荔枝酒中辛酸乙酯、己酸乙酯等酯类物质的含量增加,同时生成橙花醇氧化物,乙酸丙酯等新的芳香物质,与酒经催陈后刺激性减少,变得绵软柔和饱满,香气沉实厚重的感官品质变化结论一致。

关键词：荔枝酒香气成分催陈气质联用

Sympatric or micro-allopatric speciation in a glacial lake?Genomic islands support neither

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National Science Review 2022年第12期9卷 37-49页

作者： Ning Sun Liandong Yang Fei Tian Honghui zeng Ziwen He Kai Zhao cheng Wang Minghui Meng chenguang Feng chengchi Fang Wenqi Lv Jing Bo Yongtao Tang Xiaoni Gan Zuogang Peng Yiyu chen Shunping He State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences University of Chinese Academy of Sciences Key Laboratory of Adaptation and Evolution of Plateau Biota Northwest Institute of Plateau Biology Chinese Academy of Sciences State Key Laboratory of Biocontrol Guangdong Key Lab of Plant Resources School of Life Sciences Sun Yat-sen University School of Ecology and Environment Northwestern Polytechnical University Institute of Deep-Sea Science and Engineering Chinese Academy of Sciences Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education) Southwest University School of Life Sciences National Natural Science Foundation of China Center for Excellence in Animal Evolution and Genetics Chinese Academy of Sciences

Apparent cases of sympatric speciation may actually be due to micro-allopatric or micro-parapatric *** way to distinguish between these models is to examine the existence and nature of genomic islands of divergence,wherein divergent DNA segments are interspersed with low-divergence *** islands should be rare or absent under micro-allopatric speciation but common in cases of speciation with gene *** divergence of endemic fishes is known from isolated saline,crater,postglacial,and ancient *** morphologically distinct cyprinid fishes,Gymnocypris eckloni scoliostomus(GS) and *** eckloni(GE),in a small glacial lake on the Qinghai-Tibet Plateau,Lake Sunmcuo,match the biogeographic criteria of sympatric *** this study,we examined genome-wide variation in 46individuals from these two *** divergence time between the GS and GE lineages was estimated to be 20-60 *** identified 54 large genomic islands(≥100 kb) of speciation,which accounted for 89.4%of the total length of all genomic *** islands harboured divergent genes related to olfactory receptors and olfaction signals that may play important roles in food selection and assortative mating in *** the genomic islands clearly indicated speciation with gene flow and rejected micro-allopatric speciation,they were too large to support the hypothesis of sympatric *** and recent empirical studies suggested that continual gene flow in sympatry should give rise to many small genomic islands(as small as a few kilobases in size).Thus,the observed pattern is consistent with the extensive evidence on parapatric speciation,in which adjacent habitats facilitate divergent selection but also permit gene flow during *** suggest that many,if not most,of the reported cases of sympatric speciation are likely to be micro-parapatric speciation.

关键词： sympatric speciation gene flow genomic islands micro-parapatric speciation selection olfaction

Evolution of MnO–SiO2–Al_(2)O_(3)–MgO inclusions during heat treatment at 1100℃

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Journal of Iron and Steel Research International 2024年第5期31卷 1221-1231页

作者： Xu-bo Lei Jian-li Li Qiang zeng Hang-yu Zhu Yue Yu The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan430081HubeiChina Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking Wuhan University of Science and TechnologyWuhan430081HubeiChina Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan430081HubeiChina

To investigate the evolutionary behavior of the MnO–SiO_(2)–Al_(2)O_(3)–MgO inclusions during heat treatment,water quenched samples were isothermally held at 1100°C for 120 min in Ar and air atmosphere,and the obtaining samples were analyzed by X-ray diffraction,scanning electron microscopy and energy dispersive *** showed that 3MnO·Al_(2)O_(3)·3SiO_(2)and MnO·SiO_(2)were detected in the 5 wt.%MgO system after isothermal holding in Ar atmosphere,while MgO·Al_(2)O_(3),MnO·SiO_(2)and Mn7O8·SiO4 were detected in air *** evolutionary behavior of the 10,15 and 20 wt.%MgO systems after isothermal holding in different atmosphere were *** affected the solid phase transformation of the low MgO content *** calculation results of FactSage 8.1 showed that MgO·Al_(2)O_(3)was formed in the 5 wt.%MgO system with air *** solid phase transformation was accompanied by grain coarsening during the isothermal holding *** differences in the solid phase transformation in different atmosphere of the 5 wt.%MgO system indicated that it was a gas-phase transport grain coarsening *** enrichment of Al element in the liquid phase region at the grain edges,the homogeneous distribution of Mg element and the disappearance of the liquid phase within the crystal revealed that other MgO content systems were liquid–solid transport grain coarsening mechanism.

关键词： Evolution Glassy phase Inclusion Heat treatment MgO·Al_(2)O_(3)