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Energy-Saving Distributed Flexible Job Shop Scheduling Optimization with Dual Resource Constraints Based on Integrated Q-Learning Multi-Objective Grey Wolf Optimizer

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Computer Modeling in Engineering & Sciences 2024年第8期140卷 1459-1483页

作者： hongliang Zhang Yi Chen Yuteng Zhang Gongjie Xu School of Management Science and Engineering Anhui University of TechnologyMa’anshan243032China Laboratory of Multidisciplinary Management and Control of Complex Systems of Anhui Higher Education Institutes Anhui University of TechnologyMa’anshan243032China Department of Industrial Engineering School of Mechanical EngineeringNorthwestern Polytechnical UniversityXi’an710072China

The distributed flexible job shop scheduling problem(DFJSP)has attracted great attention with the growth of the global manufacturing *** DFJSP research only considers machine constraints and ignores worker *** one critical factor of production,effective utilization of worker resources can increase ***,energy consumption is a growing concern due to the increasingly serious environmental ***,the distributed flexible job shop scheduling problem with dual resource constraints(DFJSP-DRC)for minimizing makespan and total energy consumption is studied in this *** solve the problem,we present a multi-objective mathematical model for DFJSP-DRC and propose a Q-learning-based multi-objective grey wolf optimizer(Q-MOGWO).In Q-MOGWO,high-quality initial solutions are generated by a hybrid initialization strategy,and an improved active decoding strategy is designed to obtain the scheduling *** further enhance the local search capability and expand the solution space,two wolf predation strategies and three critical factory neighborhood structures based on Q-learning are *** strategies and structures enable Q-MOGWO to explore the solution space more efficiently and thus find better Pareto *** effectiveness of Q-MOGWO in addressing DFJSP-DRC is verified through comparison with four algorithms using 45 *** results reveal that Q-MOGWO outperforms comparison algorithms in terms of solution quality.

关键词： Distributed flexible job shop scheduling problem dual resource constraints energy-saving scheduling multi-objective grey wolf optimizer Q-learning

超临界机组长期服役后P91钢微观组织演变研究

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材料研究与应用 2024年第5期18卷 777-786页

作者：夏锦炎明洪亮王俭秋张志明黄星铭马清和向天笑郭凯郦晓慧广州大学物理与材料科学学院广东广州510006 广东腐蚀科学与技术创新研究院广东广州510530 华电电力科学研究院有限公司浙江杭州310030 中国科学院金属研究所/中国科学院核用材料与安全评价重点实验室辽宁沈阳110016

P91钢因优异的高温强度和抗蠕变性能,作为高温承压部件材料被广泛应用于超临界火电机组中。然而,长期在高温环境中服役会导致材料微观组织的退化,进而影响其力学性能及机组的安全运行。采用光学显微镜、扫描电子显微镜、电子探针显微分... 详细信息

P91钢因优异的高温强度和抗蠕变性能,作为高温承压部件材料被广泛应用于超临界火电机组中。然而,长期在高温环境中服役会导致材料微观组织的退化,进而影响其力学性能及机组的安全运行。采用光学显微镜、扫描电子显微镜、电子探针显微分析仪和透射电子显微镜等多种表征技术,分析和对比了P91钢管道在超临界火电机组中长期(66000—68000 h)服役前后的微观组织变化,并探讨了微观组织转变的机理。结合P91钢显微硬度的变化情况,研究了微观组织转变对其力学性能的影响。研究结果表明,服役前后的P91钢管道金相组织均保持典型的板条马氏体结构,但服役后P91钢中马氏体板条内的位错密度下降,且部分板条出现宽化。在析出相方面,服役前的P91钢中主要存在富Cr的M_(23)C_(6)相、富V、Nb的MX相,而服役后的P91钢中除了原有的析出相外,还在原奥氏体晶界和板条边界发现了富Mo的Laves相。另外,服役后析出相的面积分数相比服役前增加了3.06%,但析出相的数量却减少了28.1%,这主要归因于M_(23)C_(6)相的Ostwald熟化和Laves相析出长大。析出相的粗化与聚集减弱了对位错和晶界的钉扎作用,导致板条合并宽化,以及亚晶粒的形成更加容易发生。服役后的P91钢,其平均显微硬度下降了20.70 HV0.5,直接反映为力学性能的降低。一系列的微观组织的演变,是导致P91钢力学性能下降的主要原因。本研究为P91管道的长期安全服役提供了基础数据,具有非常重要的理论和工程应用意义。

关键词：长期服役超临界机组 P91钢马氏体组织 M_(23)C_(6)相 Laves相显微硬度服役性能

Essential oil and aromatic plants as feed additives in non-ruminant nutrition:a review

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Journal of Animal Science and Biotechnology 2016年第1期7卷 10-19页

作者： Zhikai Zeng Sai Zhang hongliang Wang Xiangshu Piao State Key Laboratory of Animal Nutrition Ministry of Agriculture Feed Industry CentreChina Agricultural University

This paper summarizes the current knowledge regarding the possible modes of action and nutritional factors involved in the use of essential oils （EOs） for swine and poultry. EOs have recently attracted increased interest as feed additives to be fed to swine and poultry, possibly replacing the use of antibiotic growth promoters which have been prohibited in the European Union since 2006. In general, EOs enhance the production of digestive secretions and nutrient absorption, reduce pathogenic stress in the gut, exert antioxidant properties and reinforce the animal＇s immune status, which help to explain the enhanced performance observed in swine and poultry. However, the mechanisms involved in causing this growth promotion are far from being elucidated, since data on the complex gut ecosystem, gut function, in vivo oxidative status and immune system are still lacking. In addition, limited information is available regarding the interaction between EOs and feed ingredients or other feed additives （especially pro- or prebiotics and organic acids）. This knowledge may help feed formulators to better utilize EOs when they formulate diets for poultry and swine.

关键词： Antimicrobial Antioxidant Essential oils Feed additives Growth promoter Gut function Immunity

Stable ZnO/ionic liquid hybrid materials: novel dual-responsive superhydrophobic layers to light and anions

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Science China Chemistry 2014年第7期57卷 1002-1009页

作者： LI hongliang XIN BingWei FENG Lei HAO JingCheng Key Laboratory of Coordination Chemistry and Functional Materials Dezhou University Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials Shandong University

Novel dual-responsive superhydrophobic hybrid materials, ZnO/SAMs （self-assembled monolayers） of ionic liquids （ILs） with different counter-anions （I^-, BF4^-, PF6^- and Tf2N^-）, were synthesized and characterized. ZnO nanoparticles were first deposited on glass surfaces to produce roughness. Next, SAMs of fluorinated-alkyl-3-（3-triethoxysilylpropyl）-4,5-dihydro-imidazoliumiodide （abb. [C8Ftespim]I） were grafted onto these surfaces via -Si-O- covalent bonds using self-assembly technique. The I- ion could be subsequently exchanged with BF4, PF6-or Tf2N- through a simple aqueous anion-exchange reaction. The ZnO/ILs hybrid layers were characterized by atomic-force microscopy （AFM）, scanning-electron microscopy （SEM） and X-ray photoelectron spectroscopy （XPS）. Their wettability was estimated through the measurements of static and dynamic contact angles （CAs）. Compared to corresponding films of ZnO/[CsFtespim]I with CAs 140.7° ±2.0°, films of ZnO/[CsFtespim]PF6 and ZnO/[CsFtespim]Tf2N showed CAs with 154.0° ± 2.0° and 152.0° ± 2.0°, respectively that remained for a long time. This result suggests that anion-exchange can afford superhydrophobic materials. In addition, the wettability of ZnO/[CsFtespim]X hybrid layers can be reversibly switched by altering ultraviolet （UV） irradiation and dark storage, which shows a photo-induced reversible switch of wettability. The synergistic action of ZnO nanoparticles and SAMs of ILs produced light-anion dual-responsive superhydrophobic materials with ideal stability.

关键词： ZnO/IL hybrid materials dual-responsive surface SAMs of ionic liquid wettability ZnO nanoparticles

Recent Advances in Flame Retardant Bio-Based Benzoxazine Resins

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Journal of Renewable Materials 2022年第4期10卷 871-895页

作者： hongliang Ding Xin Wang Lei Song Yuan Hu State Key Laboratory of Fire Science University of Science and Technology of ChinaHefei230026China

Benzoxazines have attracted wide attention from academics all over the world because of their unique ***,most of the production and preparation of benzoxazine resins depends on petroleum resources now,especially bisphenol A-based ***,owing to the environmental impacts,the development of bio-based benzoxazines is gaining more and more interest to substitute petroleum-based *** to petroleum-based benzoxazines,most of bio-based benzoxazines suffer from ***,it is necessary to endow bio-based benzoxazines with outstanding flame *** purpose of this review is to summarize the latest advance in flame retardant bio-based ***,three methods of the synthesis of bio-based benzoxazines are introduced ***,the curing mechanism of benzoxazine and the effect of branched chains on the curing behavior are also discussed and ***,this review focuses on fully bio-based benzoxazines,partly bio-based benzoxazines,and bio-based benzoxazine composite materials in terms of flame retardancy as well as thermal stability and some other special ***,we give a brief comment on the challenges and prospects of the future development of flame retardant bio-based benzoxazines.

关键词： Bio-based benzoxazine curing mechanism thermal stability flame retardancy

Study on Graphene Oxide Modified Inorganic Phase Change Materials and Their Packaging Behavior

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Journal of Wuhan University of Technology(Materials Science) 2018年第4期33卷 788-792页

作者：肖力光 ZHAO mingyue HU hongliang School of Materials Science and Engineering Jilin Jianzhu UniversityChangchun 130118China

We prepared the nano-inorganic phase-change ＂alloy＂ materials through the modification of Na2SO4·10H2O using Na2HPO4·12H2O and GO nano-nucleating agent, and further investigated their thermophysical properties such as melting/solidification temperatures and enthalpies via differential scanning calorimetry. When the weight ratio of Na2SO4·10H2O and Na2HPO4·12H2O was 8：2 and the weight ratio of graphene oxide was 0.5% of phase change material, the phase change ＂alloy＂ material showed excellent performances, specifically, the melting temperature and latent heat were found to be 22 ℃ and 190 J/g with a degree of subcooling decreased from 8.6℃ to 2.1℃. In order to extend the application of the phase change ＂alloy＂ material to building energy saving field, it was adsorbed on expanded glass beads under vacuum and further covered with diatomite. When the adsorption rate of EGB（volume） and PCAM（weight） was 2.5：1, the particle size of diatomaceous earth was found to be 3.6μm, while the best packaging result was obtained with the melting temperature and latent heat being 21℃ and 135 J/g, and no leakage was observed.

关键词： inorganic PCM GO DE packaging thermophysical properties

Effects of minor Sr addition on as-cast microstructure and mechanical properties of a Mg-3Sn-2Ca(wt.%) magnesium alloy

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China Foundry 2014年第2期11卷 108-114页

作者： Yang mingbo Li hongliang Duan Chengyu School of Materials Science & Engineering Chongqing University of Technology Key Laboratory of Manufacture and Test Techniques for Automobile Parts Ministry of EducationChongqing University of Technology

Minor Sr was introduced to the Mg-3Sn-2Ca （wt.%） alloy in this paper, and the effects of minor Sr addition on the as-cast microstructure and mechanical properties of the Mg-3Sn-2Ca （wt.%） alloy were investigated by using of optical and electron microscopies, differential scanning calorimetry （DSC） analysis, and tensile and creep tests. The results indicate that, after adding 0.034wt.%, 0.065wt.% or 0.10wt.% Sr to the Mg- 3Sn-2Ca alloy, the morphology of the primary CaMgSn phase changes from the initial coarse needle-like net to relatively fine short block and/or particle-like shapes. At the same time, the additions of 0.034wt.% or 0.065wt.% Sr suppress the formation of the primary CaMgSn phase, and the addition of 0.10wt.% Sr not only suppresses the formation of the primary and eutectic CaMgSn phases but also promotes the formation of Mg2Ca phase. Furthermore, the addition of minor Sr to the Mg-3Sn-2Ca alloy can improve the tensile properties of the alloy both at room temperature and 150 ℃. The creep property of the Mg-3Sn-2Ca alloy at 150 ~C is also improved by the additions of 0.034wt.% and 0.065wt.% Sr; however, the addition of 0.10wt.% Sr is not beneficial to the creep properties of the Mg-3Sn-2Ca alloy.

关键词： magnesium alloys Mg-Sn-Ca alloys CaMgSn phase Sr addition

Numerical modeling of permeability evolution based on degradation approach during progressive failure of brittle rocks

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International Journal of Mining Science and Technology 2016年第4期26卷 535-542页

作者： Zhang Chunhui Yue hongliang Zhao Quansheng Wang Laigui School of Civil Engineering Hebei University of Science and Technology Shijiazhuang 050018 China School of Mechanics and Engineering Liaoning Technical University Fuxin 123000 China

The permeability evolution of rock during the progressive failure process is described. In combination with the strength degradation index, the degradation formulas of s and a, which are dependent on the plastic confining strain component, the material constants of Hock-Brown failure criterion are presented, and a modified elemental scale elastic-brittle-plastic constitutive model of rock is established. The rela- tionship between volumetric strain and permeability through tri-axial compression is investigated. Based on the above, a permeability evolution model is established. The model incorporates confining pressure- dependent degradation of strength, dilatancy and corresponding permeability evolution. The model is implemented in FLAC by the FISH function method. The permeability evolution behavior of rock is inves-tigated during the progressive failure process in a numerical case. The results show that the model is cap- able of reproducing, and allowing visualization of a range of hydro-mechanical responses of rock. The effects of confining pressure on degradation of strength, dilatancy and permeability evolution are also reflected.

关键词： Hoek-Brown failure criterion Dilatancy Permeability evolution Confining pressure Degradation of strength

Experimental evaluation of reproductive response to climate warming in an oviparous skink

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Integrative Zoology 2013年第2期8卷 175-183页

作者： hongliang LU Yong WANG Wenqi TANG Weiguo DU Hangzhou Key Laboratory for Animal Adaptation and Evolution School of Life and Environmental SciencesHangzhou Normal UniversityHangzhouChina Key Laboratory of Animal Ecology and Conservational Biology Institute of ZoologyChinese Academy of SciencesBeijingChina

The impact of climate warming on organisms is increasingly being *** experimental evaluation of phenotypically plastic responses to warming is a critical step in understanding the biological effects and adaptive capacity of organisms to future climate *** Scincella modesta live in deeply-shaded habitats and they require low optimal temperatures during embryonic development,which makes them suitable subjects for testing the effects of warming on *** raised adult females and incubated their eggs under different thermal conditions that mimicked potential climate *** reproduction,embryonic development and hatchling traits were monitored to evaluate the reproductive response to *** warming induced females to lay eggs earlier,but it did not affect the developmental stage of embryos at oviposition or the reproductive *** high temperatures experienced by gravid females during warming treatments reduced the incubation period and increased embryonic *** locomotor performance of hatchlings was not affected by the maternal thermal environment,but it was affected by the warming treatment during embryonic *** results suggest that climate warming might have a profound effect on fitness-relevant traits both at embryonic and post-embryonic stages in oviparous lizards.

关键词： global warming phenotypic variation reproductive output Scincella modesta thermal environment