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Rare Metals 2017年第9期36卷 746-752页

作者： Guang-Jie feng Zhuo-Ran Li shi-cheng feng Wei-Jie Zhang State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China

In this study, Cf/Al composites and TiAl alloys were joined by a new method named laser-ignited selfpropagating synthesis（SHS）. Mixed powders of 63.0Ni-31.9Al-5.1Ti（wt%） were used as joining *** joint was got. The microstructure evolution and formation mechanism of the SHS joint were investigated by scanning electron microscopy（SEM）, energy-dispersive spectroscopy（EDS） and X-ray diffraction（XRD）. Results show that localized melting occurs on both sides. One γ-Ni（0.35）Al（0.30）Ti（0.35） and two Ni-Al reaction layers form,respectively, in the TiAl/interlayer and Cf/Al/interlayer interfaces. The combustion of Ni-Al-Ti interlayer begins with the sharp reaction of Ni and Al. The interlayer product is a eutectic organization of NiAl and Al-rich γ.

关键词： SHS Joining Microstructure Formationmechanism Ni-Al-Ti interlayer

Effects of Joining Conditions on Microstructure and Mechanical Properties of C_f/Al Composites and TiAl Alloy Combustion Synthesis Joints

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Acta Metallurgica Sinica(English Letters) 2015年第4期28卷 405-413页

作者： Guang-Jie feng Zhuo-Ran Li Rui-Hua Liu shi-cheng feng State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology

Cf/Al composites and TiAl alloy were joined by combustion synthesis in different joining conditions. Effects of additive Cu, joining temperature and holding time on joint microstructure and shear strength were characterized by employing DTA, SEM, EDS, XRD and shear test. Results show that the additive Cu in the Ti-Al-C interlayer could significantly decrease the reaction temperature owing to the emergence of Al--Cu eutectic liquid. Reaction degree of the interlayer was influenced by joining temperature and holding time. Due to the barrier action of formed TiAl3 layer, reaction rate of Ti and Al was determined by the atoms diffusion. The reaction between Ti and AI was more sensitive to the joining temperature rather the holding time. The joints shear strength was influenced by joining condition directly. The maximum shear strength of CS joints was 25.89 MPa at 600 ℃ for 30 rain under 5 MPa. Interface evolution mechanism of the CS joint was analyzed based on the experimental results and phase diagram.

关键词： C/Al composite TiAl alloy Combustion synthesis Interface microstructure Formationmechanism

Intermetallic compounds for nitrogen electrochemistry

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Green Energy & Environment 2025年第2期10卷 268-291页

作者： Haohong Wei cheng Tang Yanyun Wang Yongcheng feng Huancong shi Mingjin Cui Huakun Liu shixue Dou Laiquan Li Institute of Energy Materials Science School of Energy and Power EngineeringUniversity of Shanghai Science and TechnologyShanghai200093China Tsinghua Center for Green Chemical Engineering Electrification(CCEE) Department of Chemical EngineeringTsinghua UniversityBeijing100084China State Grid New Energy Cloud Carbon Neutralization Innovation Center State Grid Zhejiang Electric Power Co.LtdHuzhou Power Supply CompanyZhejiang313000China Shanghai Marine Diesel Engine Research Institute.Shanghai 201108China

Electrochemical nitrogen transformation techniques represent a burgeoning avenue for nitrogen pollutant remediation and synthesizing valuable nitrogenous products from atmospheric *** compounds(IMCs)nanocrystals,featured with unique geometric,electronic and functional properties,have emerged as promising *** review discusses various synthesis approaches for IMCs,including thermal annealing,wet chemical synthesis,electrochemical synthesis,and other emerging methods,analyzing their advantages and *** we summarized the recent advances of IMCs in electrocatalytic nitrogen transformation reactions,such as nitrate reduction reaction,nitric oxide reduction reaction,nitrogen reduction reaction,and hydrazine oxidation *** significant progress,challenges remain in the field,particularly in adopting more refined strategies to improve catalyst performance and *** review aims to comprehensively understand the structural properties of IMCs and their structure-performance relationship,guiding the development of more efficient and stable catalysts for future nitrogen electrochemistry.

关键词： Intermetallic compounds Electrocatalysis Nitrogen transformation reactions Synthesis methods Catalyst design

The circadian clock affects starvation resistance through the pentose phosphate pathway in silkworm,Bombyx mori

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Insect Science 2025年第1期32卷 55-68页

作者： Tai-Ming Dai Jian-feng Qiu cheng Luo Wen-Zhao Cui Kai Liu Jiang-Lan Li Ruji Peng Yang-Hu Sima shi-Qing Xu School of Life Sciences Suzhou Medical College of Soochow UniversitySuzhouJiangsu ProvinceChina Institute of Agricultural Biotechnology&Ecology(IABE) Soochow UniversitySuzhouJiangsu ProvinceChina

Disruption of the circadian clock can affect starvation resistance,but the molecular mechanism is still ***,we found that starvation resistance was significantly reduced in the core gene BmPer deficient mutant silkworms(Per−/−),but the mutant's starvation resistance increased with larval *** natural physiological conditions,the weight of mutant 5th instar larvae was significantly increased compared to wild type,and the accumulation ability of triglycerides and glycogen in the fat bodies was ***,under starvation conditions,the weight consumption of mutant larvae was increased and cholesterol utilization was *** analysis showed that beta-oxidation was significantly upregulated under starvation conditions,fatty acid synthesis was inhibited,and the expression levels of genes related to mitochondrial function were significantly *** investigations revealed that the redox balance,which is closely related to mitochondrial metabolism,was altered in the fat bodies,the antioxidant level was increased,and the pentose phosphate pathway,the source of reducing power in cells,was *** findings suggest that one of the reasons for the increased energy burden observed in mutants is the need to maintain a more robust redox balance in metabolic *** necessitates the diversion of more glucose into the pentose phosphate pathway to ensure an adequate supply of reducing power.

关键词： Bombyx mori circadian clock oxidative stress pentose phosphate pathway starvationresistance

A nuclide identification method ofγspectrum and model building based on the transformer

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Nuclear Science and Techniques 2025年第1期36卷 80-93页

作者： Fei Li Chu-Yang Luo Ying-Zi Wen Sheng Lv feng cheng Guo-Qiang Zeng Jian-feng Jiang Bing-Hai Li College of Nuclear Technology and Automation Engineering Chengdu University of TechnologyChengdu 610000China Applied Nuclear Technology in Geosciences Key Laboratory of Sichuan Province Chengdu 610000China Department of Physics Universitat Politècnica de CatalunyaBarcelona 08028Spain Airborne Survey and Remote Sensing Center of Nuclear Industry Shijiazhuang 050000China Hebei Key Laboratory of Airborne Detection and Remote Sensing Technology Shijiazhuang 050000China

In current neural network algorithms for nuclide identification in high-background,poor-resolution detectors,traditional network paradigms including back-propagation networks,convolutional neural networks,recurrent neural networks,etc.,have been limited in research on γ spectrum analysis because of their inherent mathematical *** is difficult to make progress in terms of training data requirements and prediction *** contrast to traditional network paradigms,network models based on the transformer structure have the characteristics of parallel computing,position encoding,and deep stacking,which have enabled good performance in natural language processing tasks in recent ***,in this paper,a transformer-based neural network (TBNN) model is proposed to achieve nuclide identification for the first ***,the Geant4 program was used to generate the basic single-nuclide energy spectrum through Monte Carlo simulations.A multi-nuclide energy spectrum database was established for neural network training using random matrices of γ-ray energy,activity,and *** on the encoder–decoder structure,a network topology based on the transformer was built,transforming the 1024-channel energy spectrum data into a 32×32 energy spectrum sequence as the model *** experiments and adjustments of model parameters,including the learning rate of the TBNN model,number of attention heads,and number of network stacking layers,the overall recognition rate reached 98.7%.Additionally,this database was used for training AI models such as back-propagation networks,convolutional neural networks,residual networks,and long shortterm memory neural networks,with overall recognition rates of 92.8%,95.3%,96.3%,and 96.6%,*** indicates that the TBNN model exhibited better nuclide identification among these AI models,providing an important reference and theoretical basis for the practical application of transformers in the qualitative and quantitativ

关键词： Nuclide identification Neural network Transformer

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燕麦基因组学研究进展

植物遗传资源学报 2021年第2期22卷 304-308页

作者：潘莹程时锋岭南现代农业科学与技术广东省实验室深圳分中心/农业部农业基因数据分析重点实验室/中国农业科学院农业基因组研究所深圳518120

燕麦具有较高的营养价值和保健功能,是一种可用于均衡营养、科学饮食的健康食品,正逐渐受到人们的青睐和认可。基因组学研究有助于燕麦重要农艺性状的定位和克隆,对开发利用燕麦优质种质资源具有重要意义。本文从以下几个方面对燕麦基... 详细信息

燕麦具有较高的营养价值和保健功能,是一种可用于均衡营养、科学饮食的健康食品,正逐渐受到人们的青睐和认可。基因组学研究有助于燕麦重要农艺性状的定位和克隆,对开发利用燕麦优质种质资源具有重要意义。本文从以下几个方面对燕麦基因组学研究进展进行综述:(1)燕麦属基因组类型、大小及染色体倍性研究;(2)基于多种分子标记手段构建燕麦基因组遗传图谱进展;(3)二倍体、六倍体燕麦基因组测序进展;(4)基于数量性状基因座定位和全基因组关联性分析手段对燕麦基因组功能基因的注释研究;(5)燕麦群体基因组/泛基因组学研究。同时对燕麦基因组学研究方向进行了探讨,以期为今后燕麦遗传育种提供参考信息。

关键词：燕麦基因组学功能基因群体基因组学

How do Notch Shape and Boundary Conditions Affect the Hydro-Mechanical Behavior of Fractured Geomaterials?Findings via the Darcy-Brinkman-Biot Approach

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Journal of Earth Science 2025年第1期36卷 351-356页

作者： Yi-Xiang Wang Xiao-Pei Guo Ling Xu shi-feng Lu Department of Civil Engineering School of Human Settlements and Civil EngineeringXi'an Jiaotong UniversityXi'an 710049China China Construction Eighth Engineering Division Co. Ltd.Southwest BranchChengdu 610041China

0 INTRODUCTION Natural geomaterials,including soils and rocks,are invariably exposed to intricate stress conditions,in addition to water pressure,in various engineering contexts such as foundation treatment,mining,and *** geomaterials frequently contain numerous fractures,which significantly influence hydrological dynamics as water permeates through them,leading to processes like expansion and bifurcation(Shu et al.,2023;Tran and Jha,2021;Lei et al.,2017;Wang et al.,2015).

关键词： bifurcation invar mining

Bioaccessibility and health risk assessment of hydrophobic organic pollutants in soils from four typical industrial contaminated sites in China

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Journal of Environmental Sciences 2025年第1期147卷 282-293页

作者： shi-Ping Ou Xiao-Liang Liao Zi-Tao Huang Yan-Cong Hu Zongwei Cai Zhi-feng Chen Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and HealthSchool of Environmental Science and EngineeringGuangdong University of TechnologyGuangzhou 510006China State Key Laboratory of Environmental and Biological Analysis Department of ChemistryHong Kong Baptist UniversityHong Kong 999077China

There have been reports of potential health risks for people from hydrophobic organic pollutants,such as polycyclic aromatic hydrocarbons(PAHs),polychlorinated hydrocarbons(PCHs),and organophosphate flame retardants(OPFRs).When a contaminated site is used for residential housing or public utility and recreation areas,the soil-bound organic pollutantsmight pose a threat to human *** this study,we investigated the contamination profiles and potential risks to human health of 15 PAHs,6 PCHs,and 12 OPFRs in soils from four contaminated sites in *** used an in vitro method to determine the oral bioaccessibility of soil *** PAHswere found at concentrations ranging from26.4 ng/g to 987 ng/***(0.27-14.3 ng/g)and OPFRs(6.30-310 ng/g)were detected,but at low levels compared to earlier *** levels of PAHs,PCHs,and OPFRs released from contaminated soils into simulated gastrointestinal fluids ranged from 1.74%to 91.0%,2.51%to 39.6%,and 1.37%to 96.9%,*** on both spiked and unspiked samples,we found that the oral bioaccessibility of pollutantswas correlated with their logKow andmolecularweight,and the total organic carbon content and pH of *** in 13 out of 38 contaminated soil samples posed potential high risks to *** considering oral bioaccessibility,nine soils still posed potential risks,while the risks in the remaining soils became *** contribution of this paper is that it corrects the health risk of soil-bound organic pollutants by detecting bioaccessibility in actual soils from different contaminated sites.

关键词： Contaminated soil Hydrophobic organic pollutant Polycyclic aromatic hydrocarbon Oral bioaccessibility Risk assessment

Accumulation characteristics and fate modeling of phthalic acid esters in surface water from the Three Gorges Reservoir area,China

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Journal of Environmental Sciences 2025年第3期149卷 46-56页

作者： Shuai Sun Bing Zhang Junjie Hu Wen Gu ZhenWang Deling Fan feng Ge Lili shi LeiWang Nanjing Institute of Environmental Science Ministry of Ecology and Environment of the People’s Republic of ChinaNanjing 210042China Key Laboratory of Pesticide Environmental Assessment and Pollution Control Ministry of Ecology and Environment of the People’s Republic of ChinaNanjing 210042China Solid Waste and Chemicals Management Center Ministry of Ecology and Environment of the People’s Republic of ChinaBeijing 100029China

Phthalic acid esters(PAEs)are a group of compounds widespread in the *** investigate the occurrence and accumulation characteristics of PAEs,surface water samples were collected from the Three Gorges Reservoir area,*** total concentrations of∑_(11)analyzed PAEs(11PAEs)in the collected water samples ranging from 197.7 to 1,409.3 ng/L(mean±IQR:583.1±308.4 ng/L).While DEHP was the most frequently detected PAE,DnBP and DnNP were the most predominant PAEs in the analyzed water samples with a mean contribution of 63.3%of the∑_(11)*** concentrations of the∑_(11)PAEs in the water samples from the upper reaches of the Yangtze River were significantly higher than those from themiddle *** better understand the transport and fate of the PAEs,seven detected PAEs were modeled by Quantitative Water Air Sediment Interaction(QWASI).The simulated and measured values were close for most PAEs,and differences are within one order of magnitude even for the worst *** all simulated PAEs,water and particle inflow were main sources in the reservoir,whereas water outflow and degradation in water were important removal *** contribution ratios of different sources/losses varied fromPAEs,depending on their *** calculated risk quotients of DnNP in the Three Gorges Reservoir area whether based onmonitoring or simulating results were all far exceeded the safety threshold value,implying the occurrence of this PAE compound may cause potential adverse effects for the aquatic ecology of the Three Gorges Reservoir area.

关键词： Phthalic esters Surface water Transport and fate Three Gorges Reservoir area Risk assessment

Effect of Cu/HZSM-5 sorbents with different Si/Al ratios on the adsorption and oxidation performance of H_(2)S

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Journal of Environmental Sciences 2025年第5期151卷 161-173页

作者： Kaini Ma Kai Li Ping Ning Jiayu feng Jiacheng Bao Lei shi Xiangyu Wang Xin Sun Faculty of Environmental Science and Engineering Kunming University of Science and TechnologyKunming 650500China National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries Kunming University of Science and TechnologyKunming 650500China

This study employed a wet impregnation method to synthesize five types of Cu/HZSM-5 adsorbents with Si/Al ratios of 25,50,85,200,and 300,used for the removal of H_(2)S in lowtemperature,low-oxygen *** impact of different Si/Al ratios on the adsorption oxidative performance of Cu_(30)/HZSM-5–85 adsorbents was *** to the performance test results,Cu_(30)/HZSM-5–85 exhibited the highest breakthrough capacity,reaching 231.75 mg H_(2)S/g_(sorbent).Cu/HZSM-5 sorbent maintains a strong ability to remove H_(2)S even under humid conditions and shows excellent water ***,BET,and XPS results revealed that CuO is the primary active species,with Cu_(30)/HZSM-5–85 having the largest surface area and highest CuO content,providing more active sites for H_(2)S adsorption.H_(2)-TPR and O_(2)-TPD results confirmed that Cu_(30)/HZSM-5–85 sorbent exhibits outstanding redox properties and oxygen storage capacity,contributing to excellent oxygen transferability in the molecular sieve adsorption-oxidation *** notable characteristics such as a large surface area,high desulfurization efficiency,and water resistance,Cu_(30)/HZSM-5–85 sorbents hold significant importance for industrial applications.

关键词： H_(2)S Si/Al ratio Adoration-oxidation Cu/HZSM-5-85(HZSM-5 with Si/Al ratio of 85 loaded Cu)