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莱钢1号1880高炉降料线停炉实践

山西冶金 2024年第1期47卷 124-126页

作者：王徐波山东钢铁集团莱芜分公司炼铁厂山东济南271104

根据公司生产计划要求,莱钢1号1 880 m^(3)高炉于2023年9月7日12:00开始降料线停炉。9月8日2:08,料线降至预定位置(22.7 m),安全休风停炉。停炉过程安全、顺利、快速,各项参数控制到位。本次降料线总计耗时14 h 8 min、耗风198.4万m^(3... 详细信息

根据公司生产计划要求,莱钢1号1 880 m^(3)高炉于2023年9月7日12:00开始降料线停炉。9月8日2:08,料线降至预定位置(22.7 m),安全休风停炉。停炉过程安全、顺利、快速,各项参数控制到位。本次降料线总计耗时14 h 8 min、耗风198.4万m^(3)、打水1 834 m^(3),出铁3炉。20:56,开始放残铁。9日00:36,残铁放完,共计放残铁386.25 t。通过精心组织,1 880 m^(3)高炉安全顺利停炉,并创造了停炉降料线用时最短的记录。

关键词：高炉降料线安全停炉

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莱钢3200m^(3)高炉炉况恢复实践

甘肃冶金 2024年第4期46卷 56-60页

作者：王徐波山东钢铁股份有限公司莱芜分公司炼铁厂山东济南271104

莱钢3200 m^(3)高炉受原燃料变化、定修及设备故障等一系列因素影响,炉况顺行变差、冶强降低。后期通过对“四大制度”调整,重新分布两股气流,活跃炉缸,使高炉恢复正常。通过对此次恢复过程进行经验总结并对在恢复过程中存在问题进行反思。

关键词：高炉焦炭质量成本上升布料制度

基于疏水滤纸的金纳米花SERS基底高灵敏检测牛奶中的三聚氰胺

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化学通报 2024年第2期87卷 235-241页

作者：沈康胡开颜朱雨彤王煦博钱瑾钱亚云扬州大学医学院扬州225001

将海胆状金纳米花(GNFs)疏水滤纸基底和表面增强拉曼散射(SERS)技术相结合,实现了牛奶中三聚氰胺的高灵敏检测。由左旋多巴还原制备的GNFs拥有许多尖锐突起和尖端可激发强局部电磁场增强(EM),产生大量的“热点”,提高SERS检测的灵敏度... 详细信息

将海胆状金纳米花(GNFs)疏水滤纸基底和表面增强拉曼散射(SERS)技术相结合,实现了牛奶中三聚氰胺的高灵敏检测。由左旋多巴还原制备的GNFs拥有许多尖锐突起和尖端可激发强局部电磁场增强(EM),产生大量的“热点”,提高SERS检测的灵敏度。采用疏水滤纸作为衬底,改进了纸基衬底上纳米材料分布不均匀的缺点。进而评估了SERS基底的灵敏度、稳定性和重现性。通过对加标牛奶中三聚氰胺的定量检测,在1×10^(-3)~1×10^(-9) mol/L范围内,牛奶中三聚氰胺的浓度对数与SERS强度呈良好的线性关系,检测限低至43pmol/L,远低于同类检测方法。本方法检测实际样品结果与液相色谱法检测结果对比无显著性差异(p>0.05)。GNFs疏水滤纸SERS基底具有高灵敏度、稳定性、重现性和实用性的优点,为牛奶等其他食品中三聚氰胺的定量检测提供了参考。

关键词：海胆状金纳米花疏水滤纸表面增强拉曼散射三聚氰胺

Existence, uniqueness and stability of positive steady states to a prey-predator diffusion system

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Science China Mathematics 2009年第5期52卷 1031-1041页

作者： wang MingXin wang xubo Science Research Center Harbin Institute of TechnologyHarbin 150080China Department of Mathematics Southeast UniversityNanjing 210018China Division of Natural Science and Mathematics Macon State CollegeMaconGA 31206USA

In the paper, we study the positive solutions of an elliptic system coming from a preypredator model with modified Leslie-Gower and Holling-Type II schemes. We study the existence, non-existence, bifurcation, uniqueness and stability of positive solutions. In particular, we obtain a continuum of positive solutions connecting a semitrivial solution to the unique positive solution of the limiting system.

关键词： prey-predator model positive solutions bifurcation existence and uniqueness stability 35J55 35B25 92B05

QuEChERs方法结合SERS技术检测猪肉中氨基糖苷类抗生素残留

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食品与机械 2024年第3期40卷 68-74,81页

作者：杨海帆丁莉徐妙文沈康王煦博扬州大学医学院江苏扬州225001 扬州大学附属医院江苏扬州225001

目的:实现猪肉中氨基糖苷类抗生素残留的快速、定量和高通量检测。方法:以PP合成纸为衬底制备基于金纳米花(AuNFs)的方阵排列SERS基底。通过QuEChERs方法对猪肉样品进行前处理,并对其进行SRES检测。结果:采用4-巯基苯甲酸为SERS探针分子... 详细信息

目的:实现猪肉中氨基糖苷类抗生素残留的快速、定量和高通量检测。方法:以PP合成纸为衬底制备基于金纳米花(AuNFs)的方阵排列SERS基底。通过QuEChERs方法对猪肉样品进行前处理,并对其进行SRES检测。结果:采用4-巯基苯甲酸为SERS探针分子,基底表现出良好的均一性、SERS增强效应、重现性和稳定性。475,619 cm-1特征峰处的SERS信号强度分别与硫酸庆大霉素和硫酸新霉素浓度的对数具有良好的线性关系(R 2分别为0.9916,0.9907),最低检测限分别低至1×10^(-9),1×10^(-8) mol/L,并成功应用于猪肉中氨基糖苷类抗生素的快速、定量和高通量检测。结论:试验方法为SERS技术应用于真实肉类样品中抗生素残留检测提供了一种经济、高效、省时和高灵敏的途径。

关键词：表面增强拉曼散射金纳米花氨基糖苷类抗生素硫酸庆大霉素硫酸新霉素猪肉

教师教学创新团队建设的路径探索——以铁道交通运营管理教学创新团队为例

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西安轨道交通职业教育研究 2024年第2期 7-10页

作者：王旭波汪敏罗想西安铁路职业技术学院陕西西安710026

“双师型”教师队伍建设质量是决定职业教育高质量发展的关键因素。该文以西安铁路职业技术学院铁道交通运营管理国家级教师教学创新团队的建设实践为例进行分析研究,探索“双高计划”背景下职业院校和企业协同共建“双师”素质教师团... 详细信息

“双师型”教师队伍建设质量是决定职业教育高质量发展的关键因素。该文以西安铁路职业技术学院铁道交通运营管理国家级教师教学创新团队的建设实践为例进行分析研究,探索“双高计划”背景下职业院校和企业协同共建“双师”素质教师团队的方法、路径等,为当前职业教育深化产教融合、创新育人模式和“双师型”教师队伍建设提供可借鉴的经验。

关键词：职业教育教师队伍 “双师型”教师队伍教师教学创新团队 “双师”素质教师团队方法和路径

Withdrawal Weighting Image-Impedance Connected SAW Filters with Al-Mo Alloy Electrodes

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稀有金属材料与工程 2006年第A3期35卷 623-624页

作者： Dongmei Li xubo wang Feng Pan Laboratory of Advanced Materials Department of Materials Science and Engineering Tsinghua University Beijing 100084 China College of Chemistry and Chemical Engineering Xinjiang University Wulumuqi 830046 China

To obtain high reliability of surface acoustic wave(SAW)devices,Mo was added to Al electrodes on 128°Y-X LiNbO_3 substrates by a *** sputtering *** of Mo additive on the mechanical properties of Al films was *** was found that the Al-Mo alloy films displayed a superior adhesion to *** the Al-Mo alloy films,a 1.65 GHz-range image-impedance connected SAW filter was designed and *** this structure of SAW filter, for satisfying stopband requirements a dual-track structure was *** weighting of interdigital transducers(IDT) was used to adjust the bandwidth of SAW filter.

关键词： Al-Mo films adhesion surface acoustic wave

Development of polymorphic SSR markers and their applicability in genetic diversity evaluation in Euptelea pleiosperma

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BIOCELL 2022年第11期46卷 2489-2495页

作者： XIAOJUN ZHOU XIAOYU LU xubo wang College of Life Science Luoyang Normal UniversityLuoyang471934China

Euptelea pleiosperma is a characteristic species of East Asian flora with both ornamental and scientific *** on the reduced-representation sequencing(RRS)technology of RAD-Seq,this study conducted high-throughput Illumina paired-end sequencing to find SSR marker information in the genome of ***,and to screen and verify polymorphism of SSR *** obtained 5.5G of high-quality data using *** total number of contigs of the RAD tags was 299,376,with the maximum contig length of 2,062 bp and the average length of 445 *** these sequences,we identified 20,718 SSR loci,with a distribution density of one SSR per 6.45 kb(1/6.45 kb).Among all SSRs,dinucleotides(52.00%)were the most detected SSRs,followed by mononucleotides(21.63%).AG/CT was the dominant motif in the SSR loci,accounting for 34.8%.Primers were successfully designed for 14,593 loci,and 100 pairs of these primers were randomly selected for chemical synthesis and validated by SSR-PCR amplification in 20 individuals of ***-nine primers were able to amplify the target *** 3.0 software was used to analyze the selected 20 SSR loci with good *** the 20 SSR markers,the number of alleles ranged from 4 to 9,and the observed heterozygosity and expected heterozygosity were from 0.35 to 0.75 and 0.541 to 0.875,*** information content of polymorphic loci ranged from 0.463 to 0.848,with an average value of *** them,there were 18 highly polymorphic loci,and 20 SSR loci did not deviate from the Hardy-Weinberg ***,the 20 pairs of SSR primers were used to conduct PCoA analysis based on Nei’s genetic distance of 51 individuals from three *** results showed that these SSR markers could distinguish genetic differences based on different geographical locations.

关键词： Cluster analysis E.pleiosperma RAD-Seq Rare species SSR markers

Genetic Variation Assessed with Microsatellites in Mass Selection Lines of the Pacific Oyster (Crassostrea gigas) in China

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Journal of Ocean University of China 2016年第6期15卷 1039-1045页

作者： wang xubo LI Qi YU Hong KONG Lingfeng Key Laboratory of Mariculture Ministry of Education Ocean University of China Qingdao 266003 P. R. China

Abstract Four successive mass selection lines of the Pacific oyster, Crassostrea gigas, selected for faster growth in breeding pro- grams in China were examined at ten polymorphic microsatellite loci to assess the level of allelic diversity and estimate the effective population size. These data were compared with those of their base population. The results showed that the genetic variation of the four generations were maintained at high levels with an average allelic richness of 18.8-20.6, and a mean expected heterozygosity of 0.902-0.921. They were not reduced compared with those of their base population. Estimated effective population sizes based on temporal variances in microsatellite frequencies were smaller to that of sex ratio-corrected broodstock count estimates. Using a rela- tively large number ofbroodstock and keeping an equal sex ratio in the broodstock each generation may have contributed to retaining the original genetic diversity and maintaining relatively large effective population size. The results obtained in this study showed that the genetic variation was not affected greatly by mass selection progress and high genetic variation still existed in the mass selection lines, suggesting that there is still potential for increasing the gains in future generations of C. gigas. The present study provided im- portant information for future genetic improvement by selective breeding, and for the design of suitable management guidelines for genetic breeding of C. gigas.

关键词： Pacific oyster genetic variation microsatellite mass selection line effective population size