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食品4D打印技术在食品工业中的应用进展

食品工业科技 2025年第1期46卷 424-430页

作者：童强肖帅磊毕野吴豪董秀萍大连工业大学机械工程与自动化学院辽宁大连116034 海洋食品加工与安全控制全国重点实验室国家海洋食品工程技术研究中心辽宁省海产品精深加工产业共性技术创新平台大连市中式预制食品技术创新中心辽宁大连116034 大连工业大学食品交叉科学研究院辽宁大连116034

4D打印技术作为在3D打印的基础上增加了“时间”这个维度的新兴打印技术,不仅可以在三维空间内构建复杂结构,还能通过材料的预设形变来实现打印物体的自我组装和形态变化。4D打印技术作为新一代的增材制造技术,因演变过程完全可预测、... 详细信息

4D打印技术作为在3D打印的基础上增加了“时间”这个维度的新兴打印技术,不仅可以在三维空间内构建复杂结构,还能通过材料的预设形变来实现打印物体的自我组装和形态变化。4D打印技术作为新一代的增材制造技术,因演变过程完全可预测、可设计和可控制的特点,其潜力和影响力正在不断扩大。近年来,4D打印技术在现代食品加工领域也得到了广泛的研究和应用,通过4D打印实现食品结构、营养成分、口感等特性的精准控制。本文综述了食品4D打印技术原理、要素及优势,分析了食品4D打印在现代食品加工领域中的应用进展,包括4D打印材料特性、外界刺激等方面,并重点探讨了4D打印智能食品的微观结构控制与口感之间的关系,最后展望了食品4D打印技术发展趋势和挑战,旨在为现代食品加工领域提供参考借鉴。

关键词： 4D打印增材制造食品加工外界刺激微结构控制

Invasive alien plants in China: An update

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Plant Diversity 2023年第1期45卷 117-121页

作者： qiang hao Jin-Shuang Ma China National Botanical Garden(North Garden) Beijing 100093China

China is the largest country in eastern Asia and contains habitats that range from cold temperate to tropical *** Chinese have a long history of plant cultivation and *** most cultivated plants in China are native species,many are non-native plants introduced throughout Chinese history for food,medicine,horticulture or ornamental purposes(Xie et al.,2001;Axmacher and Sang,2013).The Catalogue of Alien Plants in China records a total of 14,710 alien plants(Lin and Ma,2022).Among these,some,such as corn and potato,are used as food to meet the demands of China’s large ***-native plants that have established populations and colonized local environments are called naturalized *** studies indicate that the number of naturalized plant species in China ranges from 861(jiang et al.,2011)to 933(Yan et al.,2019).

关键词： population habitat temperate

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激光技术在食品3D打印中的应用及发展趋势

食品科学 2025年第1期46卷 315-321页

作者：童强肖帅磊姜宇董秀萍庞桂兵大连工业大学机械工程与自动化学院辽宁大连116034 海洋食品加工与安全控制全国重点实验室国家海洋食品工程技术研究中心辽宁省海产品精深加工产业共性技术创新平台大连市中式预制食品技术创新中心辽宁大连116034 大连工业大学食品交叉科学研究院辽宁大连116034

随着食品3D打印技术的快速发展,各种辅助技术与其结合的创新应用越来越受关注。激光技术具有精确、高能量和快速实现材料成型等特点,与食品3D打印技术的个性化定制优势高度契合,两者的结合在食品加工领域展现出巨大的应用前景。本文在... 详细信息

随着食品3D打印技术的快速发展,各种辅助技术与其结合的创新应用越来越受关注。激光技术具有精确、高能量和快速实现材料成型等特点,与食品3D打印技术的个性化定制优势高度契合,两者的结合在食品加工领域展现出巨大的应用前景。本文在介绍食品3D打印技术和激光技术发展现状的基础上,着重阐述激光技术在食品3D打印中的应用,包括激光参数(如波长、功率、脉冲等)和工艺优势。同时,指出激光技术在食品3D打印应用中所面临的挑战,如激光照射下的食品安全、应用局限等问题。最后,对激光技术和食品3D打印技术深度融合的发展趋势进行总结与展望,指明未来发展方向,为激光技术在食品3D打印领域的创新应用提供理论参考。

关键词：食品3D打印增材制造激光技术食品加工

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Large Active Area AlGaN Solar-Blind Schottky Avalanche Photodiodes with High Multiplication Gain

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Chinese Physics Letters 2013年第3期30卷 176-178页

作者： LI Jian-Fei HUANG Ze-qiang ZHANG Wen-Le jiang hao State Key Laboratory of Optoelectronic Materials and Technologies Sun Yat-sen UniversityGuangzhou 510275

We report the fabrication and performance of solar-blind AlGaN Schottky avalanche photodiodes grown on sapphire *** increased active donor density is found near the surface,leading to an enhanced electric field adjacent to the Schottky *** gain over 2000 has been achieved in the fabricated devices with a mesa diameter of 200μ*** measured dark I–V curves at different temperatures show strong temperature dependence,suggesting that the gain mechanism in our devices is primarily due to impact *** responsivity of 66.3 mA/W is obtained at 260 nm and at zero bias,corresponding to an external quantum efficiency of 31.6%.

关键词： Schottky AlGaN sapphire

Gelfand-Kirillov Dimension and Reducibility of Scalar Generalized Verma Modules for Classical Lie Algebras

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Acta Mathematica Sinica,English Series 2024年第3期40卷 658-706页

作者： Zhan qiang BAI Jing jiang School of Mathematical Sciences Soochow UniversitySuzhou 215006P.R.China E-mail:zqbai@*** jjsd6514@***

Let g be a classical complex simple Lie algebra and q be a parabolic *** M be a generalized Verma module induced from a one dimensional representation of *** M is called a scalar generalized Verma *** this paper,we will determine the reducibility of scalar generalized Verma modules associated to maximal parabolic subalgebras by computing explicitly the Gelfand-Kirillov dimension of the corresponding highest weight modules.

关键词： Generalized Verma module Gelfand-Kirillov dimension Young tableau

Mechanism for the multi-stage precipitation of Fe-Ni based alloy

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Journal of Materials Science & Technology 2019年第11期35卷 2582-2590页

作者： Yan jiang qiang Zuo Feng Liu State Key Laboratory of Solidification Processing Northwestern Polytechnical University

This work lays great emphasis on the distribution evolution of sigma(σ)phase in Fe-Ni based N08028 alloy during aging process,the result of which could provide new insights into phase change and precipitation *** is found that theσphase,in any case,tends to separate out with a granular shape at grain boundaries(GBs)primarily,and with the increment of time,it is obliged to precipitate in grain interiors(GIs)with a lamellar *** mechanisms for the evolving volume fraction and morphology ofσphase are discussed,and a model appropriate for the multi-stage behavior transforming from intergranular to intragranular precipitation is derived,as well as revealing the thermodynamics and transformation kinetics corresponding to this *** results reveal that the occurrence of multi-stage precipitation is correlated with the redistribution of solute atoms and with the difference in coupling effect of thermodynamic driving force and kinetic activation energy between the intergranular and intragranular precipitation.

关键词： Precipitation Intergranular precipitation Intragranular precipitation Thermodynamics Transformation kinetics

Ground-State Density Profiles of One-Dimensional Bose Gases with Anisotropic Transversal Confinement

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Chinese Physics Letters 2011年第7期28卷 59-61页

作者： hao Ya-jiang Department of Physics University of Science and Technology BeijingBeijing 100083

We investigate the ground-state density distributions of interacting one-dimensional Bose gases with anisotropic transversal *** the exact ground state energy density of homogeneous Bose gases with local density approximation,we determine the density distribution in each interacting regime for different anisotropic *** is shown that the transversal anisotropic parameter changes the density distribution obviously,and the observed density profiles on each orientation exhibit a difference of a factor.

关键词： parameters anisotropic gases

Measuring code maintainability with deep neural networks

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Frontiers of Computer Science 2023年第6期17卷 61-75页

作者： Yamin HU hao jiang Zongyao HU School of Computer Science and Technology Beijing Institute of TechnologyBeijing 100081China School of Artificial Intelligence Anhui UniversityHefei 230601China

The maintainability of source code is a key quality characteristic for software *** approaches have been proposed to quantitatively measure code *** approaches rely heavily on code metrics,e.g.,the number of Lines of Code and McCabe’s Cyclomatic *** employed code metrics are essentially statistics regarding code elements,e.g.,the numbers of tokens,lines,references,and branch ***,natural language in source code,especially identifiers,is rarely exploited by such *** a result,replacing meaningful identifiers with nonsense tokens would not significantly influence their outputs,although the replacement should have significantly reduced code *** this end,in this paper,we propose a novel approach(called DeepM)to measure code maintainability by exploiting the lexical semantics of text in source *** leverages deep learning techniques(e.g.,LSTM and attention mechanism)to exploit these lexical semantics in measuring code *** key rationale of DeepM is that measuring code maintainability is complex and often far beyond the capabilities of statistics or simple ***,DeepM leverages deep learning techniques to automatically select useful features from complex and lengthy inputs and to construct a complex mapping(rather than simple heuristics)from the input to the output(code maintainability index).DeepM is evaluated on a manually-assessed *** evaluation results suggest that DeepM is accurate,and it generates the same rankings of code maintainability as those of experienced programmers on 87.5%of manually ranked pairs of Java classes.

关键词： code maintainability lexical semantics deep learning neural networks

Minimum eigenvalue based adaptive fault compensation for hypersonic vehicles

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Journal of Systems Engineering and Electronics 2023年第2期34卷 492-500页

作者： MA Yajie jiang Bin REN hao College of Automation Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China

The attitude tracking control problem is addressed for hypersonic vehicles under actuator faults that may cause an uncertain time-varying control gain *** adaptive compensation scheme is developed to ensure system stability and asymptotic tracking properties,including a kinematic control signal and a dynamic control *** deal with the uncertainties of the control gain matrix,a new positive definite one is *** minimum eigenvalue of such a new control gain matrix is *** results of application to an X-33 vehicle model verify the effectiveness of the proposed minimum eigenvalue based adaptive fault compensation scheme.

关键词： actuator fault adaptive compensation hypersonic vehicle minimum eigenvalue