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Valence and sea quark mixing in meson states

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Nuclear Science and Techniques 1997年第2期8卷 71-73页

作者： wangZi－Xing SongHong－qiu 等 ShanghaiInstituteofNuclearResearch theChineseAcademyofSciencesShanghai201800 CCAST（worldLaboratory）

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关键词：价夸克海夸克介子态 qCD

Impact of film thickness in laser-induced periodic structures on amorphous Si films

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Frontiers of Optoelectronics 2023年第2期16卷 117-124页

作者： Liye Xu Jiao Geng Liping Shi weicheng Cui Min qiu College of Optical Science and Engineering Zhejiang University Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province School of Engineering Westlake University Key Laboratory of Coastal Environment and Resources of Zhejiang Province (KLaCER) School of EngineeringWestlake University Institute of Advanced Technology Westlake Institute for Advanced Study wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology

we report self-organized periodic nanostructures on amorphous silicon thin films by femtosecond laser-induced oxidation. The dependence of structural periodicity on the thickness of silicon films and the substrate materials is investigated. The results reveal that when silicon film is 200 nm, the period of self-organized nanostructures is close to the laser wavelength and is insensitive to the substrates. In contrast, when the silicon film is 50 nm, the period of nanostructures is much shorter than the laser wavelength, and is dependent on the substrates. Furthermore, we demonstrate that, for the thick silicon films, quasi-cylindrical waves dominate the formation of periodic nanostructures, while for the thin silicon films, the formation originates from slab waveguide modes. Finite-difference time-domain method-based numerical simulations support the experimental discoveries.

关键词： Laser-induced periodic surface structures (LIPSS) Ultrafast optoelectronics Laser nanofabrication quasi-cylindrical waves

Assignment and expression patterns of porcine muscle-specific isoform of phosphoglycerate mutase gene

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Journal of Genetics and Genomics 2008年第5期35卷 257-260页

作者： Haifang qiu Shuhong Zhao Xuewen Xu Martine Yerle Bang Liu Lab of Molecular Biology and Animal Breeding Key Laboratory of Agricultural Animal Genetics Breeding and Reproduction of Ministry of Education Huazhong Agricultural University Wuhan 430070 China INRA Laboratoire de Génétique Cellulaire Castanet-Toloson 31326 France

It has been reported that the muscle-specific isoform （type M, PGAM2） of phosphoglycerate mutase （PGAM） is a housekeeping enzyme; it catalyzes the conversion of 3-phosphoglycerate into 2-phosphoglycerate in the glycolysis process to release energy. It is encoded by the Pgam2 gene. In this study, the cDNA of the porcine Pgam2 was cloned. This gene contains an open reading frame of 765 bp encoding a protein of 253 residues, and the predicted protein sequences share high similarity with other mammalians, 96% identity with humans, and 94% identity with mouse and rats. Pgam2 was mapped to SSC18q13-q21 by the RH panel. In this region, there are several qTLs, such as fat ratio, lean percentage, and diameter of muslce fiber, which affect meat production and quality. The reverse transcriptase-polymerase chain reaction revealed that the porcine Pgam2 gene was mainly expressed in the muscle tissue （skeletal muscle and cardiac muscle）, and was expressed highly at skeletal muscle development stages （embryonic periods： 33, 65, and 90 days post-conception （dpo）; postnatal pigs： 4 days and adult）. This indicates that the Pgam2 gene plays an important role in muscle growth and development. In addition, it was demonstrated that PGAM2 locates both in cytoplasm and nuclei, and takes part in the glycometabolism process of cytoplasm and nuclei.

关键词： assignment expression patterns subcellular localization porcine pgma2

托珠单抗和英夫利昔单抗在儿童患者中药物不良事件信号的挖掘与评价

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中国临床药理学杂志 2024年第5期40卷 732-736页

作者：谭玥戈宁宁彭净邱文爽张欣李兰芳济宁医学院附属医院临床药学科山东济宁272029 济宁医学院附属医院检验科山东济宁272029 济宁医学院附属医院药学部山东济宁272029 济宁医学院附属医院药剂科山东济宁272029

目的分析托珠单抗与英夫利昔单抗儿科临床应用药物不良事件的发生风险。方法收集美国食品药品监督管理局不良事件报告系统数据库中2013年第一季度至2023年第一季度儿童人群的托珠单抗与英夫利昔单抗的不良事件(AE)报告数据。用报告比值... 详细信息

目的分析托珠单抗与英夫利昔单抗儿科临床应用药物不良事件的发生风险。方法收集美国食品药品监督管理局不良事件报告系统数据库中2013年第一季度至2023年第一季度儿童人群的托珠单抗与英夫利昔单抗的不良事件(AE)报告数据。用报告比值比(ROR)法和比例报告比值比(PRR)法进行AE风险信号挖掘,并按国际医学用语词典的首选系统器官分类和首选术语(PT)对AE进行分类统计分析。结果数据经提取和清洗后纳入以托珠单抗为怀疑药物的AE报告1052份,阳性PT信号198个,以英夫利昔单抗为怀疑药物的AE报告9139份,阳性PT信号387个。分析提示2种药物比较强的阳性风险信号均集中在胃肠系统疾病、感染及侵染类疾病、实验室检查、肌肉骨骼及结缔组织疾病、血液、血管及淋巴系统疾病。英夫利昔单抗风险信号主要集中在胃肠系统疾病、感染及侵染类疾病,而托珠单抗的风险信号主要集中在肌肉骨骼肌系统。结论儿童临床应用这2种药物均对多系统有影响,托珠单抗可能对生长发育有影响,英夫利昔单抗对儿童胃肠道有影响。

关键词：托珠单抗英夫利昔单抗药物不良事件数据信号挖掘

Atomic Force Microscopy Measurement in the Lignosulfonate/Inorganic Silica System:From Dispersion Mechanism Study to Product Design

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Engineering 2021年第8期7卷 1140-1148页

作者： Jingyu wang Yong qian Yijie Zhou Dongjie Yang Xueqing qiu School of Chemistry and Chemical Engineering South China University of TechnologyGuangzhou 510641China State Key Laboratory of Pulp and Paper Engineering South China University of TechnologyGuangzhou 510640China

Designing and preparing high-performance lignin-based dispersants are crucial steps in realizing the value-added utilization of lignin on an industrial *** process depends heavily on an understanding of the dispersion mechanism of lignin-based ***,atomic force microscopy(AFM)is employed to quantitatively investigate the dispersion mechanism of a lignosulfonate/silica(LS/SiO_(2))system under different pH *** results show that the repulsive force between SiO_(2)particles in LS solution is stronger than it is in water,resulting in better dispersion *** Derjaguin–Landau–Verwey–Overbeek(DLVO)formula as well as the DLVO formula combined with steric repulsion is utilized for the fitting of the AFM force/distance(F/D)curves between the SiO_(2)probe and substrate in water and in LS *** on these fitting results,electrostatic and steric repulsive forces are respectively calculated,yielding further evidence that LS provides strong steric repulsion between SiO_(2)*** studies indicate that the adsorbance of LS on SiO_(2)(q),the normalized interaction constant(A),and the characteristic length(L)are the three critical factors affecting steric repulsion in the LS/SiO_(2)*** on the above conclusions,a novel quaternized grafted-sulfonation lignin(qAGSL)dispersant is designed and *** qAGSL dispersant exhibits good dispersing performance for SiO_(2)and real cement *** work provides a fundamental and quantitative understanding of the dispersion mechanism in the LS/inorganic particle system and provides important guidance for the development of high-performance lignin-based dispersants.

关键词： Lignin Silica Atomic force microscopy Dispersion mechanism Product design

SATURATION THEOREMS FOR GENERALIZED BERNSTEIN POLYNOMIALS

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Analysis in Theory and Applications 2009年第3期25卷 242-253页

作者： Laiyi Zhu qiu Lin People＇s University of China China

In the present paper, we give the explicit formula of the principal part of ∑k=0^n（{k}q-[n]qx）^sxk ∏m=0^n-k-1（1-q^mx） with respect to [n]q for any integer s and q ∈ （0, 1]. And, using the expressions, we obtai... 详细信息

关键词： generalized Bernstein polynomial saturation theorem

High-temperature oxidation behavior of HVOF-sprayed rare earth-modified wC-12Co coating

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Rare Metals 2022年第11期41卷 3895-3902页

作者： Zong-qiu Hang Nai-Yuan Xi Yan Liu Yue Liu Hui Chen School of Materials Science and Engineering Southwest Jiaotong UniversityChengdu610031China

In this study,the CeO_(2)-modified wC-12 Co coatings were deposited on q345 steel substrate using high-velocity oxygen fuel(HVOF) *** behavior of the modified coatings was analyzed in the range of 450-900℃ for different oxidation time to investigate the effects of oxidation time and temperature on the *** oxidation kinetics and oxidation mechanism of the modified coatings were *** results show that the oxides are mainly composed of wO_(3) and CowO_(4) within 450-750℃ while the phases are different at 900 ℃.The CeO_(2)-modified coatings have good oxidation resistance when the oxidation temperature is below550℃ and the oxidation mechanism changes due to the occurrence of anomalous oxidation above 650℃.Moreover,the oxidation mass gain curves obey approximately a parabolic law in the temperature range of 450-650℃ at the initial stage but the later oxidation proceeds by a linear *** addition,based on the analysis of micromorphology and component of the prepared coating,the role of rare earth(RE) additives is obtained during high-temperature oxidization.

关键词： Rare earth HVOF wC-Co coating Oxidation behavior

Utilizing ^(234)Th/^(238)U disequilibrium to constrain particle dynamics in hydrothermal plumes in the Southwest Indian Ocean

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Acta Oceanologica Sinica 2021年第6期40卷 16-25页

作者： weifeng Yang Xinxing Zhang Min Chen Ziming Fang Yusheng qiu State Key Laboratory of Marine Environmental Science Xiamen UniversityXiamen 361102China College of Ocean and Earth Sciences Xiamen UniversityXiamen 361102China North China Sea Environmental Monitoring Center State Oceanic AdministrationQingdao 266033China Department of Ocean Science Hong Kong University of Science and TechnologyHong Kong 999077China

Metal-enriched minerals have been widely observed near hydrothermal vent ***,the dynamics of particulate metals influenced by hydrothermal activities is poorly ***,radioactive 234Th in both dissolved and particulate phases were used to examine the kinetics of particle-reactive metal adsorption,removal,and residence in a newly found hydrothermal plume over the Southwest Indian *** results showed a relatively low value on ^(234)Th/^(238)U ratios(i.e.,0.73-0.88)compared to the deep oceans,indicating an enhanced adsorption of particle-reactive metals onto particulate matter in the *** on the 234Th-238U disequilibria,the adsorption and sinking rate constants of 234Th averaged(0.009±0.001)d^(-1) and(0.113±0.024)d^(-1) in the hydrothermal plume,corresponding to the residence times of(115±19)d and(16±5)d for dissolved and particulate 234Th,*** timescale allows vent-discharged particle-reactive metals to disperse hundreds to thousands of miles ***,hydrothermal activities might influence the metal distribution in deep ocean over a very large ***,a high sinking flux of(36.2±5.4)B q/(m^(2)·d)for 234Th was observed for the plume,suggesting an enrichment of metal in particles deposited close to the *** enhancement of particle sinking could also benefit the transport of organic carbon and nitrogen and fuel the benthic ecosystems under the plume ***,hydrothermal plumes may have an impact on both the elemental geochemistry and/or ecosystem to the deep oceans interior than previous expectation.

关键词： thorium-234 particle dynamics hydrothermal plume Indian Ocean

Detection of skin defects on loquat using hyperspectral imaging combining both band radio and improved three-phase level set segmentation method

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Food quality and Safety 2023年第1期7卷 100-111页

作者： Zhaoyang Han Bin Li qiu wang Zhaoxiang Sun Yande Liu School of Mechatronics&Vehicle Engineering East China Jiaotong UniversityNational and Local Joint Engineering Research Center of Fruit Intelligent Photoelectric Detection Technology and EquipmentNanchangChina

Background and objectives Skin defects are one of the primary problems that occur in post-harvest grading and processing of *** defects lead to the loquat being easily destroyed during transportation and storage,which causes the risk of other loquats being infected,affecting the selling *** and Methods In this paper,a method combining band radio image with an improved three-phase level set segmentation algorithm(ITPLSSM)is proposed to achieve high accuracy,rapid,and non-destructive detection of skin defects of *** component analysis(PCA)was used to find the characteristic wavelength and PC images to distinguish four types of skin *** best band ratio image based on characteristic wavelength was *** The band ratio image(q782/944)based on PC2 image is the best segmented *** on pseudo-color image enhancement,morphological processing,and local clustering criteria,the band ratio image(q782/944)has better contrast between defective and normal areas in ***,the ITPLSSM was used to segment the processing band ratio image(q782/944),with an accuracy of 95.28%.Conclusions The proposed ITPLSSM method is effective in distinguishing four types of skin ***,it also effectively segments images with intensity inhomogeneities.

关键词： Loquat skin defects hyperspectral imaging multispectral images band ratio improved three-phase level set segmentation.