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Journal of Systems Science and Systems Engineering 2024年第1期33卷 30-51页

作者： yang yang Guanxin Yao China Institute for Agricultural Equipment Industrial Development Jiangsu UniversityZhenjiang212013China Jiangsu Modern Logistics Research Base Yangzhou UniversityYangzhou225009China

In the context of low carbon,this paper discussed the impact of the carbon cap-and-trade policy on the fresh-keeping decision-making of two-echelon fresh agricultural product supply chains under different dominance,and designed cost-sharing contracts to coordinate the supply chain of fresh agricultural products dominated by suppliers and retailers *** results showed that:dominance has no effect on the fresh-keeping decision and total revenue of fresh agricultural product supply chain,but it affects the internal income distribution,and dominance does not always bring more benefits;the implementation of carbon cap-and-trade reduces the fresh-keeping decision-making of fresh agricultural products supply chain and reduces the free-rider income of followers;the role of higher carbon trading price is twofold,which not only brings about the speculation of leading enterprises,but also promotes the application of low-carbon technologies;consumers’high preference for freshness,low-cost and high-efficiency low-carbon technology are all conducive to improving the fresh-keeping efforts and benefits of the supply chain;cost-sharing contracts can coordinate the supply chain of fresh agricultural products.

关键词： Dominant power carbon cap-and-trade policy fresh agricultural product supply chain fresh-keeping decision-making

乙烯利对大豆芽菜生长代谢和酚类物质合成的影响

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南京农业大学学报 2021年第2期44卷 359-365页

作者：王冕丁羽萱王尧王沛顾振新杨润强南京农业大学食品科学技术学院江苏南京210095

[目的]本文旨在研究不同浓度乙烯利对大豆芽菜生长代谢和酚类物质合成的影响。[方法]以大豆品种‘云鹤’为材料,在大豆发芽期间,用不同浓度乙烯利(乙烯供体)喷淋大豆芽菜,研究其生理形态和总酚、总黄酮、异黄酮和酚酸等功能成分以及抗... 详细信息

[目的]本文旨在研究不同浓度乙烯利对大豆芽菜生长代谢和酚类物质合成的影响。[方法]以大豆品种‘云鹤’为材料,在大豆发芽期间,用不同浓度乙烯利(乙烯供体)喷淋大豆芽菜,研究其生理形态和总酚、总黄酮、异黄酮和酚酸等功能成分以及抗氧化能力的变化。[结果]乙烯利处理显著影响大豆芽菜的生长发育,尤其是0.05 mmol·L^(-1)乙烯利处理时大豆芽菜的鲜/干重比、呼吸速率分别比对照增加18.25%、43.57%。随乙烯利浓度的增加,大豆芽菜的酚类物质含量和抗氧化能力呈先升高后降低的趋势。当乙烯利浓度为0.05 mmol·L^(-1)时,大豆芽菜的总酚和总黄酮含量分别比对照提高7.26%和30.43%;大豆芽菜的总异黄酮含量达最大值,其中丙二酰基黄豆苷含量比对照增加30.11%。[结论]乙烯利不仅影响大豆芽菜的生长代谢,而且参与大豆芽菜中酚类物质的合成调控,对提高营养和功能品质具有重要作用。

关键词：大豆芽菜乙烯利酚类物质生物合成

活性化糙米富集γ-氨基丁酸的雾化液组分优化

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食品科学 2015年第6期36卷 35-39页

作者：耿程欣杨润强顾振新南京农业大学食品科技学院江苏南京210095

通过单因素试验和正交试验,优化了糙米湿润活性化富集γ-氨基丁酸(γ-aminobutyric acid,GABA)的雾化液p H值、VB6及Ca Cl2浓度,同时研究了最优条件下活性化糙米谷氨酸脱羧酶活力及主要物质含量变化。结果表明:最优培养条件为雾化液p H ... 详细信息

通过单因素试验和正交试验,优化了糙米湿润活性化富集γ-氨基丁酸(γ-aminobutyric acid,GABA)的雾化液p H值、VB6及Ca Cl2浓度,同时研究了最优条件下活性化糙米谷氨酸脱羧酶活力及主要物质含量变化。结果表明:最优培养条件为雾化液p H 3.5、VB6浓度2 mmol/L和Ca Cl2浓度10 mmol/L;在此条件下,活性化糙米中GABA含量可达7.67 mg/100 g,为原料糙米的2.74倍。随着活性化时间的延长,糙米中游离氨基酸、还原糖含量及谷氨酸脱羧酶活力呈现逐渐增加的趋势,可溶性蛋白及淀粉含量呈现逐渐下降趋势。相关性分析表明,GABA含量与谷氨酸、游离氨基酸、可溶性蛋白含量之间均显著相关。

关键词：活性化糙米 γ-氨基丁酸 pH值 VB6 CaCl2

乳酸钙处理对发芽大豆植酸降解和主要营养物质含量的影响

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食品科学 2018年第12期39卷 226-231页

作者：惠倩汝王冕周婷王沛顾振新杨润强南京农业大学食品科学技术学院南京江苏210095

研究低浓度乳酸钙对大豆发芽过程中植酸降解以及主要营养物质含量的影响。在大豆发芽4 d期间,施用0.27 mmol/L乳酸钙喷淋对大豆植酸降解效果显著,并且提高锌、铁元素的生物利用率,利于人体对其吸收。此外,可溶性蛋白、可溶性糖含量不断... 详细信息

研究低浓度乳酸钙对大豆发芽过程中植酸降解以及主要营养物质含量的影响。在大豆发芽4 d期间,施用0.27 mmol/L乳酸钙喷淋对大豆植酸降解效果显著,并且提高锌、铁元素的生物利用率,利于人体对其吸收。此外,可溶性蛋白、可溶性糖含量不断下降,而游离氨基酸的含量随着可溶性蛋白含量下降而上升。总蛋白质含量与氨基酸总量基本保持稳定或略有下降,但氨基酸组成发生较大变化,在17种氨基酸中,天冬氨酸和组氨酸含量随着发芽时间的延长而增加,其他氨基酸含量均呈下降趋势。乳酸钙处理条件下,促进了天冬氨酸和缬氨酸等氨基酸的累积和其他氨基酸含量的降低。乳酸钙作为优质钙元素补充剂,用低浓度喷淋处理可促进大豆发芽并大量降解抗营养因子植酸,提高营养品质。

关键词：乳酸钙发芽大豆植酸主要营养物质

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发芽对小麦营养和加工品质影响研究进展

中国粮油学报 2018年第5期33卷 135-140,146页

作者：刘可欣杨润强顾振新王沛南京农业大学南京210095

小麦是我国第二大粮食作物,由其制成的面粉可制作馒头、面条和面包等多种食物。小麦发芽过程中,对人体有益的功能性成分如多酚、γ-氨基丁酸及阿拉伯木聚糖等会增加,具有良好的保健功能。然而发芽小麦的主要加工组分会发生劣变,导致生... 详细信息

小麦是我国第二大粮食作物,由其制成的面粉可制作馒头、面条和面包等多种食物。小麦发芽过程中,对人体有益的功能性成分如多酚、γ-氨基丁酸及阿拉伯木聚糖等会增加,具有良好的保健功能。然而发芽小麦的主要加工组分会发生劣变,导致生产出来的面粉品质下降,极大地限制了其应用范围。本文针对发芽小麦营养成分及加工品质变化进行了综述,并对今后芽麦产品的合理开发与利用进行了展望。

关键词：小麦发芽营养成分加工品质

LED光质对食品用小麦芽苗生长和酚类物质累积的影响

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中国粮油学报 2021年第12期36卷 13-20页

作者：常建伟杨润强王沛顾振新南京农业大学食品科学技术学院南京210095

明确不同光质对食品用小麦芽苗酚类物质累积的调节机制。小麦经避光催芽2 d后,使用LED光源的白光(W)、红光(R)、蓝光(B)、绿光(G)和黄光(Y)处理芽苗4 d,分析不同光质下小麦芽苗生长状况、总酚和酚酸含量变化及其合成酶活性和基因表达水... 详细信息

明确不同光质对食品用小麦芽苗酚类物质累积的调节机制。小麦经避光催芽2 d后,使用LED光源的白光(W)、红光(R)、蓝光(B)、绿光(G)和黄光(Y)处理芽苗4 d,分析不同光质下小麦芽苗生长状况、总酚和酚酸含量变化及其合成酶活性和基因表达水平。结果表明:红光和黄光显著提高小麦芽苗长度和鲜/干质量比,促进生长。与对照(黑暗处理)相比,蓝光、绿光和黄光处理下总酚含量增加了17.99%、18.21%和19.64%。阿魏酸、对香豆酸和咖啡酸等主要酚酸在蓝光、绿光和黄光处理下显著提高,其中对香豆酸增加幅度最大,达47.36%~78.36%。蓝光、绿光和黄光显著提高了酚类合成途径中苯丙氨酸解氨酶(PAL)、4-香豆酸-CoA连接酶(C4H)、肉桂酸4-羟化酶(4CL)活力,上调了对应的PAL、C4H和4CL mRNA水平,促进了酚类物质合成。光质对其抗氧化能力的影响趋势与酚类含量变化一致。光照处理促进小麦芽苗生长,同时通过上调酚类代谢关键酶活力及其基因表达,促进酚类物质累积,增强芽苗抗氧化活力。

关键词：小麦芽苗 LED光质酚类物质抗氧化能力

Selective nano-buckling improves the performance of graphene logic transistors

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National Science Review 2024年第2期11卷 95-96页

作者： Tong yang Ming yang Department of Applied Physics The Hong Kong Polytechnic University Research Centre for Nanoscience and Nanotechnology The Hong Kong Polytechnic University

The massive integration of silicon-based transistors into modern electronic devices greatly increases power consumption and heat generation/dissipation[1]. In this concern, transistors based on atomically-thin graphene that exhibit high electric and thermoelectric conductivities with negligible contact resistance,

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鲜切水芹贮藏期间微生物生长模型及货架期预测

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食品科学 2015年第18期36卷 231-236页

作者：田梦琦杨润强庄言顾振新南京农业大学食品科技学院江苏南京210095

利用选择性培养基进行鲜切水芹贮藏期菌相分析,发现假单胞菌属是其贮藏期优势菌。保鲜袋挽口包装的鲜切水芹在22℃贮藏8 d,假单胞菌数量即达到106 CFU/g,低温贮藏有助于抑制假单胞菌的生长繁殖。修正的Gompertz模型能有效地拟合出4℃和2... 详细信息

利用选择性培养基进行鲜切水芹贮藏期菌相分析,发现假单胞菌属是其贮藏期优势菌。保鲜袋挽口包装的鲜切水芹在22℃贮藏8 d,假单胞菌数量即达到106 CFU/g,低温贮藏有助于抑制假单胞菌的生长繁殖。修正的Gompertz模型能有效地拟合出4℃和22℃条件下假单胞菌属细菌的动态变化,偏差度和准确度分析表明所建立的模型是有效的。鲜切水芹于低温贮藏3 d后置于常温(22±1)℃贮藏时,叶绿素和木质素动态变化符合一级模型,在实际应用中,可根据腐败菌的生长速率来预测鲜切水芹的货架期。

关键词：鲜切水芹贮藏微生物货架期

Design Optimization and Operating Performance of S-CO_(2) Brayton Cycle under Fluctuating Ambient Temperature and Diverse Power Demand Scenarios

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Journal of Thermal Science 2024年第1期33卷 190-206页

作者： yang Jingze yang Zhen DUAN Yuanyuan Key Laboratory for Thermal Science and Power Engineering of MOE Beijing Key Laboratory for CO_(2) Utilization and Reduction TechnologyTsinghua UniversityBeijing 100084China

The supercritical CO_(2)(S-CO_(2)) Brayton cycle is expected to replace steam cycle in the application of solar power tower system due to the attractive potential to improve efficiency and reduce *** the concentrated solar power plant with thermal energy storage is usually located in drought area and used to provide a dispatchable power output,the S-CO_(2) Brayton cycle has to operate under fluctuating ambient temperature and diverse power demand *** addition,the cycle design condition will directly affect the off-design *** this work,the combined effects of design condition,and distributions of ambient temperature and power demand on the cycle operating performance are analyzed,and the off-design performance maps are proposed for the first time.A cycle design method with feedback mechanism of operating performance under varied ambient temperature and power demand is introduced *** show that the low design value of compressor inlet temperature is not conductive to efficient operation under low loads and sufficient output under high ambient *** average yearly efficiency is most affected by the average power demand,while the load cover factor is significantly influenced by the average ambient *** multi-objective optimization,the optimal solution of designed compressor inlet temperature is close to the minimum value of35℃ in Delingha with low ambient temperature,while reaches 44.15℃ in Daggett under the scenario of high ambient temperature,low average power demand,long duration and large value of peak load during the peak temperature *** the cycle designed with compressor inlet temperature of 35℃ instead of 44.15℃ in Daggett under light industry power demand,the reduction of load cover factor will reach 0.027,but the average yearly efficiency can barely be improved.

关键词： supercritical CO_(2)Brayton cycle ambient temperature fluctuating power demand scenarios design optimization off-design performance

A physics-informed deep learning framework for spacecraft pursuit-evasion task assessment

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Chinese Journal of Aeronautics 2024年第5期37卷 363-376页

作者： Fuyunxiang yang Leping yang Yanwei ZHU College of Aerospace Science and Engineering National University of Defense TechnologyChangsha 410073China

Qualitative spacecraft pursuit-evasion problem which focuses on feasibility is rarely studied because of high-dimensional dynamics,intractable terminal constraints and heavy computational *** this paper,A physics-informed framework is proposed for the problem,providing an intuitive method for spacecraft threat relationship determination,situation assessment,mission feasibility analysis and orbital game rules *** the first time,situation adjustment suggestions can be provided for the weak player in orbital ***,a dimension-reduction dynamics is derived in the line-of-sight rotation coordinate system and the qualitative model is determined,reducing complexity and avoiding the difficulty of target set presentation caused by individual ***,the Backwards Reachable Set(BRS)of the target set is used for state space partition and capture zone ***-time analysis can eliminate the influence of changeable initial state and enable the proposed framework to analyze plural situations ***,a time-dependent Hamilton-Jacobi-Isaacs(HJI)Partial Differential Equation(PDE)is established to describe BRS evolution driven by dimension-reduction dynamics,based on level set ***,Physics-Informed Neural Networks(PINNs)are extended to HJI PDE final value problem,supporting orbital game rules summarization through capture zone evolution ***,numerical results demonstrate the feasibility and efficiency of the proposed framework.

关键词： Spacecraft pursuit-evasion Qualitative differential game Physics-Informed Neural Networks(PINNs) Reachability analysis Hamilton-Jacobi-Isaacs(HJI) Partial Differential Equations(PDEs)