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Inclusion Modification with Mg Treatment for 35CrNi3MoV Steel

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Journal of Materials Science & Technology 1998年第1期14卷 53-56页

作者： Fu, J Yu, YG Wang, AR chen, bp Sun, WS Univ Sci & Technol Beijing Beijing 100083 Peoples R China Inner Mongolia Met Mat Res Inst Baotou 014034 Peoples R China

The effects of Mg on the inclusion characteristics of 35CrNi3MoV steel have been studied. The results show that Mg treatment reduces obviously the amount of inclusion in the steel. Magnesium and oxygen in liquid steel form dispersed fine particles of MgO, to which other oxides or sulphides nucleated at heterogeneity and grown during solidification. In this way the inclusions are modified. The small spherical inclusions containing MgO have been observed in the Mg treated steel in contrast to the large angular inclusions with Al2O3 in the conventional steel. Especially the elongated MnS inclusion is replaced by small MgS . MgO or MgS. MnS . MgO complex inclusion. The formation of inclusions have been discussed.

关键词： Steel metallurgy

Utilizing bp neural networks to accurately reconstruct the tritium depth profile in materials for BIXS

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Nuclear Science and Techniques 2025年第1期36卷 103-114页

作者： chen Zhao Wei Jin Yan Shi Chang-An chen Yi-Ying Zhao Institute of Materials China Academy of Engineering PhysicsJiangyou 621908China

β-ray-induced X-ray spectroscopy(BIXS)is a promising method for tritium detection in solid materials because of its unique advantages,such as large detection depth,nondestructive testing capabilities,and low requirements for sample ***,high-accuracy reconstruction of the tritium depth profile remains a significant challenge for this *** this study,a novel reconstruction method based on a backpropagation(bp)neural network algorithm that demonstrates high accuracy,broad applicability,and robust noise resistance is *** average reconstruction error calculated using the bp network(8.0%)was much lower than that obtained using traditional numerical methods(26.5%).In addition,the bp method can accurately reconstruct BIX spectra of samples with an unknown range of tritium and exhibits wide applicability to spectra with various tritium ***,the bp network demonstrates superior accuracy and stability compared to numerical methods when reconstructing the spectra,with a relative uncertainty ranging from 0 to 10%.This study highlights the advantages of bp networks in accurately reconstructing the tritium depth profile from BIXS and promotes their further application in tritium detection.

关键词： β-ray-induced X-ray spectroscopy Tritium detection bp network Ridge regression Reconstruction problem

Mining Subsidence Based on Integrated SBAS-InSAR and Unmanned Aerial Vehicles Technology

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Journal of Ocean University of China 2025年第1期24卷 113-129页

作者： chen Xuewei chen Jianping WANG Genhou ZHANG Qian ZHENG Yanwei School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China Beijing Key Laboratory of Development and Research for Land Resources Information Beijing 100083China

The Small Baseline Subset InSAR(SBAS-InSAR)and unmanned aerial vehicles(UAVs)as common ocean-land technologies,have been extensively applied in subsidence,glacial movement,surface deformation,and maritime positioning and navigation.A novel method integrating SBAS-InSAR and UAV photogrammetry is used to analyze ground subsidence deformation in the Gesar gold mine located in Maqu,Northwest *** approach uses SBAS-InSAR to calculate two-dimensional deformation data for capturing ascending and descending *** method can provide precise information on small-sized deformations within mining *** deformation data obtained from UAVs and the vertical deformation data derived from InSAR are integrated to generate comprehensive and accurate ground subsidence data from the mining *** demonstrate that using a combined InSAR(vertical)and UAV technique to analyze surface subsidence in mining districts resolves inconsistency between the line-of-sight and deformation ***,the incoherence issue of InSAR in regions with large deformation gradients is addressed,while the inherent errors of UAV monitoring of mining surface subsidence are *** genetic algorithm(GA)-backpropagation(bp)neural network algorithm is combined with InSAR data to predict subsidence in collapsed *** observed,the GA-bp algorithm has the smallest residual under the same training ***,the GA-bp neural network model can effectively predict surface subsidence in mining areas and can be used for subsequent subsidence prediction.

关键词： SBAS-InSAR two-dimensional deformation solution UAV photogrammetry data fusion subsidence prediction

Realized stable bp-N at ambient pressure by phosphorus doping

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Matter and Radiation at Extremes 2025年第1期10卷 6-14页

作者： Guo chen chengfeng Zhang Yuanqin Zhu Bingqing Cao Jie Zhang Xianlong Wang Key Laboratory of Materials Physics Institute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei 230031China University of Science and Technology of China Hefei 230026China

Black-phosphorus-structured nitrogen(bp-N)is an attractive high-energy-density ***,high-pressure-synthesized bp-N will decompose at low pressure and cannot be quenched to ambient *** a method to stabilize it at 0 GPa is of great significance for its practical ***,unlike cubic gauche,layered polymeric,and hexagonal layered polymeric nitrogen(cg-N,LP-N,and HLP-N),it is always a metastable phase at high pressures up to 260 GPa,and decomposes into chains at 23 ***,on the basis of firstprinciples simulations,we find that P-atom doping can effectively reduce the synthesis pressure of bp-N and maintain its stability at 0 *** distribution of P-atom dopants within bp-N layers helps maintain the structural stability of these layers at 0 GPa,while interlayer electrostatic interaction induced by N-P dipoles enhances dynamic stability by eliminating interlayer ***,pressure is conducive to enhancing the stability of bp-N and its doped forms by suppressing N-chain *** a configuration with 12.5%doping concentration,a gravimetric energy density of 8.07 kJ/g can be realized,which is nearly twice that of trinitrotoluene.

关键词： doping phosphorus stability

Bifidobacterium breve CCFM1078 regulates bone development in growing BALB/c mice via gut microbiota and metabolites to balance bone formation and resorption

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Food Science and Human Wellness 2025年第1期14卷 307-331页

作者： Bowen Li Mengfan Ding Xiaoming Liu Haiqin chen Jianxin Zhao RPaul Ross Catherine Stanton Shilong Jiang Wei chen Bo Yang State Key Laboratory of Food Science and Technology Jiangnan UniversityWuxi 214122China School of Food Science and Technology Jiangnan UniversityWuxi 214122China International Joint Research Center for Probiotics&Gut Health Jiangnan UniversityWuxi 214122China APC Microbiome Ireland University College CorkCork T12 K8AFIreland Teagasc Food Research Centre Cork P61 C996Ireland Nutrition and Metabolism Research Division Innovation CenterHeilongjiang Feihe Dairy Co.Ltd.Beijing 100015China PKUHSC-China Feihe Joint Research Institute of Nutrition and Healthy Lifespan Development Beijing 100083China National Engineering Research Center for Functional Food Jiangnan UniversityWuxi 214122China

This study endeavors to investigate the effects of Bifidobacterium breve CCFM1078 on bone formation and resorption balance in growing BALB/c *** BALB/c mice were assigned to the control group(administration saline)and the CCFM1078 group(administration *** CCFM1078,3×10^(9) CFU/day)in 3-,4-,and 5-week *** the groups have male and female *** findings demonstrate that *** CCFM1078 exerts on the dynamic equilibrium between bone formation and resorption during the critical period of growth in mice by modulating the composition of gut microbiota and metabolites(hexadecanamide,linoleoyl ethanolamide,and palmitoyl ethanolamide),the genes and proteins expression related to the growth hormone(GH)/insulin-like growth factors-1(IGF-1)axis and Gs/PKA/CREB signaling pathways,as well as downstream osteogenic and osteoclastic differentiation *** effects of *** CCFM1078 were different with age and gender *** finding suggests *** CCFM1078 may have potential applications in regulating bone metabolism in the growth period population.

关键词： Bifidobacterium breve Bone development Gut microbiota GH/IGF-1 axis Gs/PKA/CREB signaling pathway

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Bifidobacterium longum *** CCFM1269 promotes intestinal barrier and release of IFN-β through TLR4-TRIF dependent way in growing mice

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Food Science and Human Wellness 2025年第1期14卷 345-360页

作者： Mengfan Ding Bo Yang Bowen Li Haiqin chen Renqiang Yu RPaul Ross Catherine Stanton Shilong Jiang Jianxin Zhao Wei chen State Key Laboratory of Food Science and Resources Jiangnan UniversityWuxi 214122China School of Food Science and Technology Jiangnan UniversityWuxi 214122China International Joint Research Center for Probiotics&Gut Health Jiangnan UniversityWuxi 214122China Department of Neonatology Wuxi Maternity and Child Health Care HospitalAffi liated Women’s Hospital of Jiangnan UniversityWuxi 214122China APC Microbiome Ireland University College CorkCork T12 R229Ireland Teagasc Food Research Centre Cork P61 C996Ireland Nutrition and Metabolism Research Division Innovation CenterHeilongjiang Feihe Dairy Co.Ltd.Beijing 100015China PKUHSC-China Feihe Joint Research Institute of Nutrition and Healthy Lifespan Development Beijing 100083China National Engineering Research Center for Functional Food Jiangnan UniversityWuxi 214122China

Bifidobacterium longum *** is a commensal bacterium that predominates in the infant gut,playing a critical role in both preventing foreign infections and facilitating immune *** study aimed to explore the effects of *** *** supplementation on interferon-beta(IFN-β)secretion and intestinal barrier improvement in growing *** and male mice were orally administered either saline or *** *** CCFM1269 or I5TI(1×10^(9) CFU/mice per day,n=8)from 1-week-age until 3-,4-,and *** sequencing analysis revealed that CCFM1269 exhibited potential antiviral capacity through increasing 2'-5'oligoadenylate synthetase(OAS).Additionally,CCFM1269 supplementation significantly increased colonic IFN-β levels which combined with OAS in 3-week-old female and male mice by activating the TLR4-TRIF-dependent signaling ***,this effect was not observed in 4-and 5-week-old ***,both CCFM1269 were found to modulate the gut microbiota composition and enhance the intestinal barrier function in 3-,4-,and 5-week-old *** summary,the results of this study suggested that *** *** CCFM1269 promoting intestinal barrier and releasing IFN-β in growing mice was in a strain-specific and time-dependent manner.

关键词： Bifidobacterium longum subsp.infantis Intestinal barrier interferon-beta(IFN-β)secretion Age dependence

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基于bp神经网络和NSGA-Ⅱ算法的直流电磁泵结构优化

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兵器装备工程学报 2025年第1期46卷 182-190页

作者：杨照林陈观慈张文斌杨进陈永华昆明理工大学机电工程学院昆明650500

为了提高直流电磁泵的压力来驱动液态金属流动进行散热,改善泵的输送效率,采用数值模拟与智能算法相结合的优化设计方法,对泵的结构参数和输入电流进行了优化。以液态金属镓铟锡合金为工质,在1.5 L/min流量工况下,利用COMSOL软件对电磁... 详细信息

为了提高直流电磁泵的压力来驱动液态金属流动进行散热,改善泵的输送效率,采用数值模拟与智能算法相结合的优化设计方法,对泵的结构参数和输入电流进行了优化。以液态金属镓铟锡合金为工质,在1.5 L/min流量工况下,利用COMSOL软件对电磁泵进行了数值模拟仿真,求得了泵的静压差并将其与试验值进行了对比,验证了仿真模型的准确性。采用Box-Behnken试验设计方法进行数据采集,根据试验数据构建bp神经网络代理模型,以压力和效率最大化为优化目标,结合NSGA-Ⅱ算法进行结构优化。结果表明:在相同流量下,优化后泵的输入电流减小了20 A,更利于散热;压力和效率分别提高了2577.6 Pa和11.8%,沿程损耗降低,整体性能得到改善;对比流场分析,泵内部流动速度更均匀,流线分布更加平稳。

关键词：直流电磁泵压力效率 bp神经网络 NSGA-Ⅱ

Identification of long InDels through whole genome resequencing to fine map qIF05-1 for seed isoflavone content in soybean(Glycine max L. Merr.)

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Journal of Integrative Agriculture 2025年第1期24卷 85-100页

作者： Jia Jia Huan Wang Ximeng Yang Bo chen Ruqian Wei Qibin Ma Yanbo cheng Hai Nian Key Laboratory of Plant Molecular Breeding of Guangdong Province/College of Agriculture South China Agricultural UniversityGuangzhou 510642China State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources South China Agricultural UniversityGuangzhou 510642China Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology South China Agricultural UniversityGuangzhou 510642China

Soybean seed isoflavones are a type of secondary metabolites that can provide health and nutrition benefits for humans. In our previous study, a stable quantitative trait locus(QTL) qIF05-1 controlling the seed isoflavone content in soybean was detected on chromosome(Chr.) 05 in a recombinant inbred line(RIL) population from a cross of Huachun 2×Wayao. In this study, the parental lines were re-sequenced using the Illumina Solexa System with deep coverage. A total of 63,099 polymorphic long insertions and deletions(InDels)(≥15 bp)were identified between the parents Huachun 2 and Wayao. The InDels were unevenly distributed on 20chromosomes of soybean, varying from 1,826 in Chr. 12 to 4,544 in Chr. 18. A total of 10,002 long InDels(15.85% of total) were located in genic regions, including 1,139 large-effect long InDels which resulted in truncated or elongated protein sequences. In the qIF05-1 region, 68 long InDels were detected between the two parents. Using a progeny recombination experiment and genotype analysis, the qIF05-1 locus was mapped into a 102.2 kb genomic region, and this region contained 12 genes. By RNA-seq data analysis, genome sequence comparison and functional validation through ectopic expression in Arabidopsis thaliana, Glyma.05G208300(described as GmEGL3), which is a basic helix-loop-helix(bHLH) transcription factor in plants, emerged as the most likely confirmed gene in qIF05-1. These long InDels can be used as a type of complementary genetic method for QTL fine mapping, and they can facilitate genetic studies and molecular-assisted selection breeding in soybean.

关键词： soybean seed isoflavone content whole genome re-sequencing long InDels fine map

舰船设备关键零件的冲击损伤累积及寿命预测方法

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振动与冲击 2025年第3期44卷 163-170页

作者：陈卓闫明金映丽沈阳工业大学机械工程学院沈阳110870

针对舰船设备在海战时遭受敌方武器及自身火炮后坐力冲击造成的损伤累积问题,提出了隶属函数和Miner损伤累积理论相结合的冲击疲劳寿命预测方法。从外界冲击中提取冲击幅值和均值,根据GM(1,1)模型预测冲击幅值的参数,并利用bp(back prop... 详细信息

针对舰船设备在海战时遭受敌方武器及自身火炮后坐力冲击造成的损伤累积问题,提出了隶属函数和Miner损伤累积理论相结合的冲击疲劳寿命预测方法。从外界冲击中提取冲击幅值和均值,根据GM(1,1)模型预测冲击幅值的参数,并利用bp(back propagation)神经网络修正残差提高预测精度。利用疲劳模数与寿命的联系提出一种新的应力-寿命模型,并基于多项式变异理论确定模型中的参数。将舰船设备上的关键零件6061铝合金轴作为试验对象,并结合几种隶属函数预测试件的冲击疲劳寿命。结果表明:采用Γ分布隶属函数求得的冲击疲劳寿命预测值与试验值相比误差最小,且当Γ分布中的k值一定时,参数a_(1)的变化在初始阶段对预测值基本不产生影响,只有当a_(1)逐渐接近S_(0)时才会有微小的影响。说明提出的疲劳寿命预测方法是可靠的,为舰船设备关键零件的冲击损伤累积研究及寿命预测提供理论参考和数据基础。

关键词：灰色估计多项式变异冲击损伤累积隶属函数寿命预测