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The Mechanism of Heating Rate on the Secondary Recrystallization Evolution in Grain Oriented Silicon Steel

Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 275-282页

作者： gao qian LI Jun WANG Xianhui CAO Laifu GONG Jian LI Bo Central Iron and Steel Research Institute Group Beijing 100081China Shougang Zhixin Electromagnetic Material R&D(Beijing)Co. Ltd.Beijing 101300China Beijing Shougang Co. Ltd.Qian’an 064404China

Grain-oriented silicon steels were prepared at different heating rates during high temperature annealing,in which the evolution of magnetic properties,grain orientations and precipitates were *** illustrate the Zener factor,the diameter and number density of precipitates of interrupted testing samples were statistically *** effect of precipitate ripening on the Goss texture and magnetic property was *** indicated that the trend of Zener factor was similar under different heating rates,first increasing and then decreasing,and that the precipitate maturing was greatly inhibited as the heating rate *** recrystallization was developed at the temperature of 1010℃when a heating rate of 5℃/h was used,resulting in Goss,Brass and{110}oriented grains growing abnormally and a magnetic induction intensity of ***,increasing the heating rate to 20℃/h would inhibit the development of undesirable oriented grains and obtain a sharp Goss ***,when the heating rate was extremely fast,such as 40℃/h,poor secondary recrystallization was developed with many island grains,corresponding to a decrease in magnetic induction intensity to 1.87 *** a suitable heating rate of 20℃/h,the sharpest Goss texture and the highest magnetic induction of 1.94 T with an onset secondary recrystallization temperature of 1020℃were found among the experimental variables in this *** heating rate affected the initial temperature of secondary recrystallization by controlling the maturation of precipitates,leading to the deviation and dispersion of Goss texture,thereby reducing the magnetic properties.

关键词： high temperature annealing heating rate secondary recrystallization grain oriented silicon steel

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Revolutionizing breast cancer detection:Advances in fluorescent probe technology

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Nano Research 2025年第1期18卷 653-674页

作者： qian gao Lin Tang Jun Zhan Yiyuan Xue Feng Luo State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases West China Hospital of StomatologySichuan UniversityChengdu 610041China Emergency Obstetrics and Gynecology West China Second University HospitalSichuan UniversityChengdu 610041China Department of Obstetrics and Gynecology West China Second University HospitalSichuan UniversityChengdu 610041China Department of Prosthodontics West China School of StomatologySichuan UniversityChengdu 610041China

With the increasing incidence of breast cancer globally,there is an urgent demand for enhanced diagnostic and therapeutic *** comprehensive review explores advancements in fluorescent probe technology for breast cancer imaging and early *** probes offer unparalleled sensitivity and specificity in detecting cancer biomarkers,enabling early diagnosis and delineation of tumor margins during *** categorize these probes into molecular,nano,ratiometric,the second near-infrared window(NIR-II),and multifunctional varieties,each with unique capabilities for targeting specific cancer *** review highlights recent innovations in probe design,emphasizing their applications in pathogenesis studies,drug development,precision medicine,and fluorescence-guided *** their promising clinical potential,challenges such as safety,biomarker targeting accuracy,system compatibility,and clinical translation *** these hurdles is crucial for the integration of fluorescent probes into standard cancer care,aiming to improve treatment outcomes and patient quality of life.

关键词： breast cancer fluorescent probes imaging early diagnosis biomarker

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Recent transmission of Mycobacterium tuberculosis in China： the implication of molecular epidemiology for tuberculosis control

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Frontiers of Medicine 2018年第1期12卷 76-83页

作者： Chongguang Yang qian gao Key Laboratory of Medical Molecular Virology of Ministries of Education and Health School of Basic Medical Science Fudan University Shanghai 200032 China Department of Epidemiology of Microbial Diseases School of Public Health Yale University 60 College Street New Haven CT 06510 USA

Tuberculosis （TB） has remained an ongoing concern in China. The national scale-up of the Directly Observed Treatment, Short Course （DOTS） program has accelerated the fight against TB in China. Nevertheless, many challenges still remain, including the spread of drug-resistant strains, high disease burden in rural areas, and enormous rural-to-urban migrations. Whether incident active TB represents recent transmission or endogenous reactivation has helped to prioritize the strategies for TB control. Evidence from molecular epidemiology studies has delineated the recent transmission of Mycobacterium tuberculosis （M. tuberculosis） strains in many settings. However, the transmission patterns of TB in most areas of China are still not clear. Studies carried out to date could not capture the real burden of recent transmission of the disease in China because of the retrospective study design, incomplete sampling, and use of low-resolution genotyping methods. We reviewed the implementations of molecular epidemiology of TB in China, the estimated disease burden due to recent transmission of M. tuberculosis strains, the primary transmission of drug-resistant TB, and the evaluation of a feasible genotyping method of M. tuberculosis strains in circulation.

关键词： tuberculosis recent transmission molecular epidemiology China

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Prenatal ultrasonographic findings in Klippel-Trenaunay syndrome:A case report

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World Journal of Clinical Cases 2021年第35期9卷 10994-10998页

作者： Hou-Qing Pang qian-qian gao Department of Ultrasound West China Second University HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Key Laboratory of Obstetric&Gynecological and Pediatric Diseases and Birth Defects of Ministry of Education Sichuan UniversityChengdu 610041Sichuan ProvinceChina

BACKGROUND Klippel-Trenaunay syndrome(KTS)is a rare congenital disorder.A detailed prenatal ultrasound examination plays an important role in the diagnosis of KTS and the subsequent counseling and follow-up of the *** SUMMARY A 25-year-old woman attended our department for a regular *** whole of the right lower extremity and right buttock were observed to be markedly thicker compared to the left one at 18 wk of ***,the lengths of the right femur,tibia and fibula were in the normal *** marked edema and fluid/cystic spaces were detected in the lower *** were no other organ *** vasculature in the right limb was visibly dilated,with much higher intensive blood flow *** congenital embryonic veins were visible in both *** right lower limb exhibited much more hypertrophy compared to the left limb two weeks *** and genetic tests showed normal results with 46 *** the normal karyotype,the family opted to terminate the *** post-mortem examination confirmed asymmetric hypertrophy of the right limb in the fetus and revealed a large area of marked dark-purple superficial capillary malformations occupying the skin of the right lower *** enlargement of veins and soft tissue hypertrophy were also seen on postnatal X-ray and Magnetic Resonance *** revealed severe congestion in the right lower limb.A final diagnosis of KTS was *** KTS may be diagnosed prenatally based on the typical features observed during ultrasound examination.

关键词： Klippel-Trenaunay syndrome Prenatal diagnosis Ultrasonography Case report

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Variation of Zooplankton Ecological Group During Spring in China Estuaries

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Journal of Ocean University of China 2019年第2期18卷 501-508页

作者： LU Wuyang gao qian XU Zhaoli Ministry of Agriculture Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation East China Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Ningbo Marine Environmental Monitoring Centre State Oceanic Administration College of Marine Sciences Shanghai Ocean University

Zooplankton was major indicator species of the environment. To explore the effect of marine environment on zooplankton distribution in the coast of China, the zooplankton samples from stations in Guanhe Estuary(GE), Changjiang(Yangtze River) Estuary(CE), Oujiang Estuary(OE), Jiulongjiang Estuary(JE) and Beilun Estuary(BE)(covering 14 latitudes) in spring were surveyed and the variation of zooplankton ecological group was researched. According to the adaptability temperature, the zooplankton was divided into two ecological groups: warm-temperate species and subtropical species. The warm-temperate species was the main dominant species and subtropical species was only dominant species in BE. Calanus sinicus, a warm-temperate species, was the only dominant species in all five estuaries. From north to south, the proportion of warm-temperate species in the five estuaries gradually decreased depends on the number, were 83.33%, 48.39%, 45.00%, 43.75% and 30.43%, respectively. In contrary, the proportion of subtropical species was gradually increased. The warm-temperate species predominated over the total abundance and the percentage was whopping high in the north estuaries, including GE(96.16%), CE(95.57%), OE(97.83%) and JE(95.53%). The abundance percentage of subtropical species have remarkably higher(82.39%) in BE. Five estuaries zooplankton community was subdivided into three zooplankton groups, which were the northern warm temperate zooplankton group, the southern subtropical zooplankton group and the estuarine brackish-water group. The water temperature and coastal current of China Sea are recognized as the main factors determining the distribution and community structure of estuarine zooplankton in spring.

关键词： zooplankton estuary ecological group spring

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Troubleshooting algorithm for solving assignment problem and its applications

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Journal of Systems Engineering and Electronics 2013年第1期24卷 165-172页

作者： Li Zhou Hailin Zou Yancun Yang qian gao School of Information and Electrical Engineering Ludong University

A new troubleshooting algorithm for solving assignment problem based on existing algorithms is proposed, and an analysis on the related theory is given. By applying the new troubleshooting algorithm to the Lagrange relaxation algorithm of the multi-dimensional assignment problem of data association for multi-passive-sensor multi-target location systems, and comparing the simulation results with that of the Hungarian algorithm which is the classical optimal solving algorithm, and the multi-layer ordersearching algorithm which is a sub-optimal solving algorithm, the performance and applying conditions of the new algorithm are summarized. Theory analysis and simulation results prove the effectiveness and superiority of the new algorithm.

关键词： assignment problem troubleshooting algorithm data association.

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An innovative wood derived carbon-carbon nanotubes-pyrolytic carbon composites with excellent electrical conductivity and thermal stability

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Journal of Materials Science & Technology 2024年第8期175卷 22-28页

作者： Bihan Zhang Leilei Zhang Zhongkai Wang qian gao State Key Laboratory of Solidification Processing Shaanxi Key Laboratory of Fiber Reinforced Light Composite MaterialsNorthwestern Polytechnical UniversityXi’an 710072China

The functionality of wood has evolved with time to adapt to the emerging needs of *** wood-based composites have attracted tremendous interest in the fields of aerospace,military power,electric power,and system electronic devices,especially at high ***,their electrical conductivity and thermal stability characteristics are still far from ***,an innova-tive wood-derived carbon-carbon nanotubes-pyrolytic carbon composites(WDC-CNTs-PyCs)is successfully fabricated by chemical vapor deposition and chemical vapor *** combination of wood-derived carbon(WDC),carbon nanotubes(CNTs),and pyrolytic carbon(PyC)has never been reported in any previous *** have innovatively introduced PyC into the WDC by chemical vapor *** promote the continuous deposition of PyC to form dense ***-CNTs-PyC demonstrates significant compressive strength(85.4 MPa)and excellent electrical conductivity(632 S cm^(-1)).The weight loss rate of WDC-CNTs-PyC is 6%after heating at 500℃ for 10 min in the air ***,WDC-CNTs-PyC could resist oxyacetylene ablation above 2300℃ for 15 *** excellent electrical conductivity,outstanding thermal stability,and mechanical properties,WDC-CNTs-PyC opens up a surprising strategy for efficiently fabricating various high-performance electronic device composites that could be used in high-temperature fields.

关键词： Wood derived carbon Carbon nanotubes Pyrolytic carbon Electrical conductivity Thermal stability Compressive strength

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Spatiotemporal characteristics of the expansion of an urban agglomeration and its effect on the eco-environment: Case study on the northern slope of the Tianshan Mountains

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Science China Earth Sciences 2019年第9期62卷 1461-1472页

作者： Chuanglin FANG qian gao Xiaolei ZHANG Weiguo CHENG Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China College of Resources and Environmental Science Xinjiang University Urumqi 830046 China Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi 830011 China

Urban agglomerations, which are highly integrated urban groups, form during the advanced stages of industrialization and urban development. The urban agglomeration on the northern slope of the Tianshan Mountains is one of the 19 urban agglomerations promoted by China’s 13th Five-Year Plan and a key area of urbanization in Xinjiang. Based on remote sensing data, we analyzed the expansion of construction land in the urban agglomeration on the northern slope of the Tianshan Mountains and its effect on ecological value in 1980–2015. The results show that the expansion of construction land significantly affected ecological value in the study area over the past 35 years. Among land use types, grassland was the dominant contributor to changes in ecological value;its contribution rate reached 66.27% with an interannual variation of only 5%. The contribution rate of urban and rural residential land along with industrial and mining lands was very low(0.82%), while the interannual variation was large(86%). The area of construction land in the urban agglomeration expanded from 1,067 to 2,586 km^2, and the conversions of different land use types had different effects on ecological value. Among land use types, the conversions of lowcoverage grassland and dry land made the largest contributions to changes in ecological value. During the study period, a total of 1,685 km^2 of ecological land, 69.91% of which belonged to cultivated land and grassland, was converted into construction land.A total area of 1,082 km^2 of dry land and low-coverage grassland was converted into construction land, accounting for 64.21% of the total ecological land that was converted into construction land. In 2000–2015, the area of urban construction land increased significantly along with the proportion of unused land, including gobi(172 km^2), bare land(65 km^2), and salt-affected land(65 km^2), being converted into construction land. In contrast, the area of construction land that was converted into ecol

关键词： Urban agglomeration Tianshan Mountains Spatial expansion Temporal and spatial evolution Ecological environmental effect

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Simulation on Thermal Integrity of the Fin/Tube Brazed Joint of Heat Exchangers

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Journal of Materials Science & Technology 2003年第Z1期19卷 71-72页

作者： Yiyu qian Feng gao Fengjiang WANG Hui ZHAO State Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China State Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China State Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China State Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China

In the applications of heat exchangers, the fin efficiency of heat transfer is the key issue. Thermal distribution withinthe brazed joints in heat exchanger under loading conditions is investigated in this paper. Simulated results showedthat the thermal distribution at the brazed joint zone is related to not only the geometry of the fin and tube, butalso the brazed joint topology. A poor brazed joint will result in very poor heat transfer. Thermal contact resistanceis adopted to analyze the fin heat efficiency.

关键词： Thermal integrity, Fin efficiency, Thermal contact resistance, FEM

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Synthesis and Structure of a La(Ⅲ) Complex of 1,10-Phenanthroline-2,9-dicarboxylate:a Three-dimensional Network via Hydrogen Bonding Interactions

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Chinese Journal of Structural Chemistry 2008年第2期27卷 137-142页

作者： gao qian XIE Ya-Bo CHEN Yuan WANG Dao College of Environmental and Energy Engineering Beijing University of Technology Beijing 100022 China

A new La（Ⅲ） complex, {[La（L）（NO3）（H2O）3]·H2O}n （L = 1,10-phenanthroline- 2,9-dicarboxylate）, has been synthesized and structurally determined by X-ray diffraction analysis. The complex crystallizes in the monoclinic system, space group P21/c with a = 7.7358（17）, b = 8.1664（18）, c = 28.271（6） A, β= 95.184（4）°, V= 1778.6（7） A3, Z = 4, C14H14LaN3O11, Mr = 539.19, Dc = 2.014 g/cm^3, μ= 2.471 mm^-1, F（000） = 1056, the final R = 0.0350 and wR = 0.0659. In this complex, each metal center adopts a ten-coordination geometry formed by two N atoms from a ligand L and eight O atoms from three H2O molecules, a nitrate ion and carboxylates of two ligands. Each ligand adopts a N2,O3-pentdentate coordination mode using two N and two O atoms chelating a La（Ⅲ）, and using another O atom of carboxylate to bridge another La（Ⅲ） center resulting in a 1D helical chain molecule. Intermolecular strong O-H…O and weak C-H…O hydrogen bonds extend the 1D chain structure into a 3D supramolecular architecture.

关键词： hydrogen bonding 1,10-phenanthroline-2,9-dicarboxylate La(Ⅲ) complex,synthesis

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