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Energy-efficient buffer and service rate allocation in manufacturing systems using hybrid machine learning and evolutionary algorithms

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Advances in Manufacturing 2024年第2期12卷 227-251页

作者： si-Xiao Gao Hui liu Jun Ota Key Laboratory of Traffic Safety on Track of Ministry of Education Institute of Artificial Intelligence and Robotics(IAIR)School of Traffic and Transportation EngineeringCentral South UniversityChangsha410075People’s Republic of China Research into Artifacts Center for Engineering School of EngineeringThe University of TokyoTokyoJapan

Currently,simultaneous buffer and service rate allocation is a topic of interest in the optimization of manufacturing *** allocation problems have been solved previously to satisfy economic requirements;however,owing to the progress of green manufacturing,energy conservation and environmental protection have become increasingly ***,an energy-efficient approach is developed to maximize the throughput and minimize the energy consumption of manufacturing systems,subject to the total buffer capacity,total service rate,and predefined energy *** energy-efficient approach integrates the simulated annealing-non-dominated sorting genetic algorithm-II with the honey badger algorithm-histogram-based gradient boosting regression *** former algorithm searches for Pareto-optimal solutions of sufficient *** latter algorithm builds prediction models to rapidly calculate the throughput,energy consumption,and energy *** examples show that the proposed hybrid approach can achieve a better solution quality compared with previously reported ***,the prediction models can rapidly evaluate manufacturing systems with sufficient *** study benefits the multi-objective optimization of green manufacturing systems.

关键词： Energy-efficient allocation Multi-objective optimization Energy efficiency Energy consumption Machine learning

High-entropy alloys for accessing hydrogen economy via sustainable production of fuels and direct application in fuel cells

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Rare Metals 2023年第11期42卷 3553-3569页

作者： Qi-Yang Cheng Meng-Fan Wang Jia-Jie Ni Yan-Zheng He Hao-Qing Ji si-si liu Tao Qian Cheng-Lin Yan School of Chemistry and Chemical Engineering Nantong UniversityNantong226019China Collaborative Innovation Center of Suzhou Nano Science and Technology College of EnergySoochow UniversitySuzhou215006China Light Industry Institute of Electrochemical Power Sources Suzhou 215600China

Heavy consumption of fossil fuels has raised concerns over the climate change and energy security in the past *** this review,hydrogen economy,as a clean and sustainable energy system,is receiving great *** success of future hydrogen economy strongly depends on the storage of renewable energy in hydrogen and hydrogen-rich chemicals through electrolyzers and conversion back to electricity via fuel *** are at the heart of these critical technologies and great efforts have been devoted to preparing highly efficient ***-entropy alloys(HEAs),with their unique structural characteristics and intrinsic properties,have evolved to be one of the most popular catalysts for energy-related applications,especially those associated with hydrogen ***,recent advances regarding HEAs-based hydrogen economy are comprehensively *** is paid to the discussion of emerged HEAs as a new class of materials in hydrogen energy cycle,carbon-based hydrogen energy cycle,and nitrogen-based hydrogen energy cycle,covering the sustainable electrochemical synthesis of hydrogen and hydrogen-rich fuels and their direct application in fuel *** on this overview,the challenges and promising directions are proposed to guide the development of HEAs research,aiming to achieve significant progress for further accessing hydrogen economy.

关键词： High-entropy alloys(HEAs) Hydrogen economy Electrocatalysis Fuel cell Energy conversion

The Effect of Key Nodes on theMalware Dynamics in the Industrial Control Network

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Computers, Materials & Continua 2024年第4期79卷 329-349页

作者： Qiang Fu JunWang Changfu si Jiawei liu College of Computer Science and Technology Shenyang University of Chemical TechnologyShenyang110142China College of Computer Science and Engineering Northeastern UniversityShenyang110169China

As industrialization and informatization becomemore deeply intertwined,industrial control networks have entered an era of *** connection between industrial control networks and the external internet is becoming increasingly close,which leads to frequent security *** paper proposes a model for the industrial control *** includes a malware containment strategy that integrates intrusion detection,quarantine,and ***,the role of keynodes in the spreadofmalware is studied,a comparisonexperiment is conducted to validate the impact of the containment *** addition,the dynamic behavior of the model is analyzed,the basic reproduction number is computed,and the disease-free and endemic equilibrium of the model is also obtained by the basic reproduction ***,through simulation experiments,the effectiveness of the containment strategy is validated,the influence of the relevant parameters is analyzed,and the containment strategy is *** otherwords,selective immunity to key nodes can effectively suppress the spread ofmalware andmaintain the stability of industrial control *** earlier the immunization of key nodes,the *** the time exceeds the threshold,immunizing key nodes is almost *** analysis provides a better way to contain the malware in the industrial control network.

关键词： Key nodes dynamic model industrial control network simulation

The noise spectral characteristics and noise reduction schemes of screw air-source heat pump:A case study

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Building simulation 2024年第1期17卷 53-70页

作者： Dongsheng liu Yaohan Feng Jikang Jia Pengfei si Ya Feng China Southwest Architecture Design and Research Institute Co.Ltd. Chengdu 610041China CSCEC Green Construction Engineering Research Center Chengdu 610041China

The screw air-source heat pump can cause incessant high noise levels during operation,which might hinder adoption of this energy-efficient heat ***,acoustic measurements and comparison testing were performed in this *** measurements revealed that the compressor is the main noise source of the heat pump,and it shows a multipeak frequency distribution and a wide frequency spectrum under different work conditions,with multiple peaks at 63,250,and 1000 ***,a compressor sound insulation cover with broadband absorption was proposed,and it was experimentally proven that the insulation cover can reduce the maximum sound pressure level of one unit from 89.8 dBA to 79.1 ***,we proposed several noise reduction strategies and compared their noise reduction effects using computer *** results showed that the noise problem can be effectively improved through the rational design of the sound barrier and the layout and opening options of heat *** distance between the sound barrier and heat pump and the sound attenuation due to diffraction ALa exhibit a U-shaped *** buildings of different heights,the optimal heights of noise barrier are *** 5.5-meter is the optimal height of the sound barrier for single-story *** conclusions can be applied to other building projects for heat pump noise reduction.

关键词： acoustic simulation broadband noise noise reduction air-source heat pump sound barrier

Atomically Substitutional Engineering of Transition Metal Dichalcogenide Layers for Enhancing Tailored Properties and Superior Applications

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Nano-Micro Letters 2024年第5期16卷 248-284页

作者： Zhaosu liu si Yin Tee Guijian Guan Ming‑Yong Han Institute of Molecular Plus Tianjin UniversityTianjin 300072People’s Republic of China Institute of Materials Research and Engineering A*STARSingapore 138634Singapore

Transition metal dichalcogenides(TMDs)are a promising class of layered materials in the post-graphene era,with extensive research attention due to their diverse alternative elements and fascinating semiconductor *** MX2 layers with different metal and/or chalcogen elements have similar structural parameters but varied optoelectronic properties,providing opportunities for atomically substitutional engineering via partial alteration of metal or/and chalcogenide atoms to produce ternary or quaternary *** resulting multinary TMD layers still maintain structural integrity and homogeneity while achieving tunable(opto)electronic properties across a full range of composition with arbitrary ratios of introduced metal or chalcogen to original counterparts(0–100%).Atomic substitution in TMD layers offers new adjustable degrees of freedom for tailoring crystal phase,band alignment/structure,carrier density,and surface reactive activity,enabling novel and promising *** review comprehensively elaborates on atomically substitutional engineering in TMD layers,including theoretical foundations,synthetic strategies,tailored properties,and superior *** emerging type of ternary TMDs,Janus TMDs,is presented specifically to highlight their typical compounds,fabrication methods,and potential ***,opportunities and challenges for further development of multinary TMDs are envisioned to expedite the evolution of this pivotal field.

关键词： Transition metal dichalcogenides Atomic substitution Tailored structure Tunable bandgap Enhanced applications

Green tea polyphenols alleviate di-(2-ethylhexyl)phthalate-induced liver injury in mice

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世界胃肠病学杂志:英文版 2023年第34期29卷 5054-5074页

作者： Heng Shi Xin-Hai Zhao Qin Peng Xian-Ling Zhou si-si liu Chuan-Chuan Sun Qiu-Yu Cao Shi-Ping Zhu Sheng-Yun Sun Department of Traditional Chinese Medicine The First Affiliated Hospital of Jinan UniversityGuangzhou 522000Guangdong ProvinceChina Department of Gastroenterology The Central Hospital of ShaoyangShaoyang 422000Hunan ProvinceChina Department of Pathology The Central Hospital of ShaoyangShaoyang 422000Hunan ProvinceChina

BACKGROUND Di(2-ethylhexyl)phthalate(DEHP)is a common plasticizer known to cause liver *** tea is reported to exert therapeutic effects on heavy metal exposureinduced organ ***,limited studies have examined the therapeutic effects of green tea polyphenols(GTPs)on DEHP-induced liver *** To evaluate the molecular mechanism underlying the therapeutic effects of GTPs on DEHP-induced liver *** C57BL/6J mice were divided into the following five groups:Control,model[DEHP(1500 mg/kg bodyweight)],treatment[DEHP(1500 mg/kg bodyweight)+GTP(70 mg/kg bodyweight),oil,and GTP(70 mg/kg bodyweight)]*** 8 wk,the liver function,blood lipid profile,and liver histopathology were *** expressed micro RNAs(miRNAs)and mRNAs in the liver tissues were examined using high-throughput ***,functional enrichment analysis and immune infiltration prediction were *** miRNA-mRNA regulatory axis was elucidated using the starBase *** expression was evaluated using *** GTPs alleviated DHEP-induced liver dysfunction,blood lipid dysregulation,fatty liver disease,liver fibrosis,and mitochondrial and endoplasmic reticulum lesions in *** infiltration of macrophages,mast cells,and natural killer cells varied between the model and treatment ***-miR-141-3p(a differentially expressed miRNA),Zcchc24(a differentially expressed mRNA),and Zcchc24(a differentially expressed protein)constituted the miRNA-mRNA-protein regulatory axis involved in mediating the therapeutic effects of GTPs on DEHP-induced liver damage in *** This study demonstrated that GTPs mitigate DEHP-induced liver dysfunction,blood lipid dysregulation,fatty liver disease,and partial liver fibrosis,and regulate immune cell ***,an important miRNAmRNA-protein molecular regulatory axis involved in mediating the therapeutic effects of GTPs on DEHP-induced liver damage was elucid

关键词： Green tea polyphenols Di(2-ethylhexyl)phthalate Liver fibrosis Fatty liver disease Mitochondria Immune

Curcumin improves synaptic plasticity impairment induced by HIV-1gp120 V3 loop

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Neural Regeneration Research 2015年第6期10卷 925-931页

作者： Ling-ling Shen Ming-liang Jiang si-si liu Min-chun Cai Zhong-qiu Hong Li-qing Lin Yan-yan Xing Gui-lin Chen Rui Pan Li-juan Yang Ying Xu Jun Dong Department of Pathophysiology Key Laboratory of the State Administration of Traditional Chinese MedicineMedical College of Jinan University GHM Institute of CNS Regeneration Jinan University Department of Orthopedics First Affiliated HospitalMedical College of Jinan University

Curcumin has been shown to significantly improve spatial memory impairment induced by HIV-1 gp 120 V3 in rats, but the electrophysiological mechanism remains unknown. Using extracellular microelectrode recording techniques, this study confirmed that the gp120 V3 loop could suppress long-term potentiation in the rat hippocampal CA1 region and synaptic plasticity, and that curcumin could antagonize these inhibitory effects. Using a Fura-2/AM calcium ion probe, we found that curcumin resisted the effects of the gp120 V3 loop on hippocampal synaptosomes and decreased Ca2＋ concentration in synaptosomes. This effect of curcumin was identical to nimodipine, suggesting that curcumin improved the inhibitory effects of gpl20 on synaptic plasticity, ameliorated damage caused to the central nervous system, and might be a potential neuroprotective drug.

关键词： nerve regeneration curcumin neurons HIV-1 gp l20 V3 loop plasticity HIV-associatedneurocognitive disorders output^input curve long-term potentiation excitatory postsynaptic potential paired-pulse facilitation Cd+ synaptosome NSFC grants neural regeneration

Dynamical switchable quantum nonreciprocity induced by off-resonant chiral two-photon driving

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Science China(Physics,Mechanics & Astronomy) 2024年第6期67卷 31-37页

作者： Da-Wei liu Zi-Hao Li Shi-Lei Chao Ying Wu liu-Gang si School of Physics and Institute for Quantum Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China

Optical nonreciprocity,which refers to the direction-dependent emission,scattering and absorption of photons,plays a very important role in quantum engineering and quantum information ***,we propose an all-optical approach to achieve the optical dynamical switchable quantum nonreciprocity by an off-resonant chiral two-photon driving in a single microring cavity,which differs from the conventional nonreciprocal *** is shown that the optical field with time-dependent statistical properties can be generated and the nonreciprocity flips periodically,with switchable photon blockade and photon-induced tunneling *** find that the dynamical system is robust and immune to the parameter variations,which loosens the parameter range of ***,the time window for one-way quantum information is sufficiently wide and *** work opens a new idea for the current quantum nonreciprocal research,which can facilitate a memory functionality and be used for future inmemory superconducting quantum *** other nonreciprocal quantum devices,i.e.,dynamical switchable nonreciprocal squeezing and entanglement,may be inspired by our method,which is expected to have important applications in future quantum technology.

关键词： dynamical switchable nonreciprocity single-photon source chiral two-photon driving

Quantitative evaluation of the contribution of underground space to urban resilience:A case study in China

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Underground Space 2024年第4期17卷 1-24页

作者： si-Cong liu Fang-Le Peng Yong-Kang Qiao Yun-Hao Dong Research Center for Underground Space&Department of Geotechnical Engineering Tongji UniversityShanghai 200092China

Urban underground space(UUS)development has been acknowledged as a positive contribution to urban resilience(UR).Such contribution has been qualitatively addressed in recent years,but only quantitatively discussed in few *** evaluation methods for UR are widely used in China and around the world,but the role of underground space is barely *** paper provides a way to bridge this gap on the city scale.A UR evaluation framework was carefully constructed that covers the basic aspects and elements of *** contributions of UUS to UR were identified and integrated into the UR evaluation framework,and the measurement methods for each indicator related to UUS were determined.A case study of 19 sample cities in China were conducted using the integrated evaluation *** analysis and clustering analysis were further adopted to interpret the evaluation results,mainly with three indicators reflecting the level of UUS development,namely UUS area(m^(2)),UUS density(104 m^(2)/km^(2))and UUS area per capita(m^(2)/person).The results showed a strong correlation between UUS area and *** average proportion of UR provided by UUS in the 19 sample cities was 16.46%,while the maximum figure reached 29.20%.The sample cities were clustered into four categories based on the relationship between the proportion of UR provided by UUS,UUS area,and GDP per capita,where both high and low UUS area tend to provide less proportion of resilience than the medium UUS *** suggestions for UUS utilization were proposed to assist cities in achieving urban resilience.

关键词： Urban underground space(UUS) Urban resilience Resilience evaluation Resilient development