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Roles of Bioenergy and Green Hydrogen in Large Scale Energy Storage for Carbon Neutrality

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Engineering 2023年第10期29卷 32-34页

作者： chunbao x. School of Energy and Environment City University of Hong KongHong Kong 999077China

*** of biomass and bioenergy in solar energy storage Biomass comprises plant-based material,for ex.mple,wood,microalgae,energy crops,and agro-forestry residues,as well as organic waste from industries,farms,and househ... 详细信息

关键词： crops energy Storage

MODIFIED GENETIC ALGORITHM APPLIED TO SOLVE PRODUCT FAMILY OPTIMIZATION PROBLEM

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Chinese Journal of Mechanical Engineering 2007年第4期20卷 106-111页

作者： CHEN chunbao WANG Liya Department of Industrial Engineering and Management Shanghai Jiaotong University Shanghai 200030 China

The product family design problem solved by evolutionary algorithms is discussed. A successful product family design method should achieve an optimal tradeoff among a set of competing objectives, which involves max.mizing commonality across the family of products and optimizing the performances of each product in the family. A 2-level chromosome structured genetic algorithm （2LCGA） is proposed to solve this class of problems and its performance is analyzed in comparing its results with those obtained with other methods. By interpreting the chromosome as a 2-level linear structure, the variable commonality genetic algorithm （GA） is constructed to vary the amount of platform commonality and automatically searches across varying levels of commonality for the platform while trying to resolve the tradeoff between commonality and individual product performance within the product family during optimization process. By incorporating a commonality assessing index.to the problem formulation, the 2LCGA optimize the product platform and its corresponding family of products in a single stage, which can yield improvements in the overall performance of the product family compared with two-stage approaches （the first stage involves determining the best settings for the platform variables and values of unique variables are found for each product in the second stage）. The scope of the algorithm is also ex.anded by introducing a classification mechanism to allow mul- tiple platforms to be considered during product family optimization, offering opportunities for superior overall design by more efficacious tradeoffs between commonality and performance. The effectiveness of 2LCGA is demonstrated through the design of a family of universal electric motors and comparison against previous results.

关键词： Product family design Product platform Genetic algorithm Optimization

Fractional-order generalized thermoelastic diffusion theory

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Applied Mathematics and Mechanics(English Edition) 2017年第8期38卷 1091-1108页

作者： chunbao x.ONG Yanbo NIU School of Civil Engineering Tianjin UniversityTianjin 300072China

The present work aims to establish a fractional-order generalized themoelastic diffusion theory for anisotropic and linearly thermoelastic diffusive media. To numerically handle the multi-physics problems ex.ressed by a sequence of incomplete differential equations, particularly by a fractional equation, a generalized variational principle is obtained for the unified theory using a semi-inverse method. In numerical implementation, the dynamic response of a semi-infinite medium with one end subjected to a thermal shock and a chemical potential shock is investigated using the Laplace transform. Numerical results, i.e., non-dimensional temperature, chemical potential, and displacement, are presented graphically. The influence of the fractional order parameter on them is evaluated and discussed.

关键词： fractional Laplace anisotropic infinite variational handle unified inverse Liouville calculus

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脂氧合酶在炎症相关疾病中作用的研究进展

南京农业大学学报 2025年第1期48卷 27-45页

作者：单锴周姗姗李茜周克茹李春保南京农业大学食品科学技术学院江苏南京210095 南京市江宁医院(南京医科大学附属江宁医院) 江苏南京211100 中科南京生命健康高等研究院江苏南京211135

脂氧合酶(lipox.genase,LOx.是一类含有非血红素铁的双加氧酶,在人体中广泛表达,并在多种活化的免疫细胞和肿瘤组织中表达上调。LOx.化长链多不饱和脂肪酸形成相应的氢过氧化物。这些代谢物在生理条件下调节血管功能、肾脏功能、生殖... 详细信息

脂氧合酶(lipox.genase,LOx.是一类含有非血红素铁的双加氧酶,在人体中广泛表达,并在多种活化的免疫细胞和肿瘤组织中表达上调。LOx.化长链多不饱和脂肪酸形成相应的氢过氧化物。这些代谢物在生理条件下调节血管功能、肾脏功能、生殖系统功能和免疫防御,而在病理条件下导致疼痛、发热和炎症,进而在多种急、慢性疾病中起着重要作用。目前已经在人体内发现6个LOx.因,其可以通过可变剪切和蛋白修饰机制形成更多种效应蛋白。6大类LOx.别具有不同的表达谱、底物偏好性和代谢产物,因此也具有不同的功能分工。本文从LOx.分布和代谢特性入手,综述了它们与炎症相关疾病的关系,从生物化学角度介绍了LOx.表达与活性调控机制并展望了靶向LOx.能缓解相关病理损伤的营养学和临床医学策略。

关键词：脂氧合酶炎症多不饱和脂肪酸脂质介质

A simplified method for analyzing the fundamental frequency of monopile supported offshore wind turbine system design

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Earthquake Engineering and Engineering Vibration 2018年第4期17卷 893-901页

作者： Yang chunbao Wang Rui Zhang Jianmin School of Civil Engineering/State Key Laboratory of Hydroscience and Engineering Department of Hydraulic Engineering Tsinghua University

Preliminary design of offshore wind turbines requires high precision simplified methods for the analysis of the system fundamental frequency. Based on the Rayleigh method and Lagrange’s Equation, this study establishes a simple formula for the analysis of system fundamental frequency in the preliminary design of an offshore wind turbine with a monopile foundation. This method takes into consideration the variation of cross-section geometry of the wind turbine tower along its length, with the inertia moment and distributed mass both changing with diameter. Also the rotational flex.bility of the monopile foundation is mainly considered. The rigid pile and elastic middle long pile are calculated separately. The method is validated against both FEM analysis cases and field measurements, showing good agreement. The method is then used in a parametric study, showing that the tower length Lt, tower base diameter d0, tower wall thickness δt, pile diameter db and pile length Lb are the major factors influencing the fundamental frequency of the offshore wind turbine system. In the design of offshore wind turbine systems, these five parameters should be adjusted comprehensively. The seabed soil condition also needs to be carefully considered for soft clay and loose sand.

关键词： offshore wind turbine system fundamental frequency analytical method rotational foundation flex.bility

Hydrometallurgical detox.fication and recycling of electric arc furnace dust

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International Journal of Minerals,Metallurgy and Materials 2023年第11期30卷 2076-2094页

作者： Yang x.e x.aoming Liu chunbao(Charles)x. Yonghui Han State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Department of Chemical&Biochemical Engineering Western UniversityLondonON N6A 5B9Canada Hebei Technology Innovation Centre of Solid Wastes Utilization Hebei University of Science and TechnologyShijiazhuang 050091China

Electric arc furnace dust(EAFD)is a hazardous waste but can also be a potential secondary resource for valuable metals,such as Zn and *** the increased awareness of carbon emission reduction,energy conservation,and environmental protection,hydrometallurgical technologies for the detox.fication and resource use of EAFD have been developing *** work summarizes the generation mechanisms,compositions,and characteristics of EAFD and presents a critical review of various hydrometallurgical treatment methods for EAFD,e.g.,acid leaching,alkaline leaching,salt leaching,and pretreatment–enhanced leaching ***,the phase transformation mechanisms of zinc-containing components in acid and alkali solutions and pretreatment processes are ***,two novel combined methods,i.e.,ox.gen pressure sulfuric acid leaching combined with composite catalyst preparation,and synergistic roasting of EAFD and municipal solid waste incineration fly ash combined with alkaline leaching,are proposed,which can provide future development directions to completely recycling EAFD by recovering valuable metals and using zinc residue.

关键词： hazardous waste recycling separation zinc hydrometallurgical technologies

Ex.raction of copper from copper-bearing biotite by ultrasonic-assisted leaching

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International Journal of Minerals,Metallurgy and Materials 2022年第2期29卷 212-217页

作者： Baoqiang Yu Jue Kou chunbao Sun Yi x.ng School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083China

Copper-bearing biotite is a refractory copper mineral found on the surface of the Zambian *** is a copper ox.de from which copper is ex.racted by various methods,especially by *** is the process of ex.racting a substance from a solid material dissolved in a *** improve the efficiency of the leaching process by a more effective method,a new method called ultrasonic-assisted acid leaching is proposed and applied in this *** with regular acid leaching,the ultrasound method reduced the leaching time from 120 to 40 min,and sulfuric acid concentration reduced from 0.5 to 0.3 mol·L^(-1).Besides,leaching temperature could be reduced from 75 to 45°C at the leaching rate of 78%.The mechanism analysis indicates that an ultrasonic wave can cause the delamination of a copper-bearing biotite and increase its specific surface area from 0.55 to 1.67 m^(2)·g^(-1).The results indicate that copper ex.raction from copper-bearing biotite by ultrasonic-assisted acid leaching is more effective than regular acid *** study proposes a promising method for recycling valuable metals from phyllosilicate minerals.

关键词： ultrasonic wave copper ex.raction delamination copper-bearing biotite

A Brief Overview of Low CO_2 Emission Technologies forIron and Steel Making

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Journal of Iron and Steel Research International 2010年第3期17卷 1-7页

作者： chunbao (Charles) x. CANG Da-qiang Department of Chemical Engineering Lakehead'.University Ontario P7B 5El Canada School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083 China

The global steel production has been growing for the last 50 years, from 200 Mt in 1950s to 1 240 Mt in 2006. Iron and steel making industry is one of the most energy-intensive industries, with an annual energy consumption of about 24 EJ, 5% of the world＇s total energy consumption. The steel industry accounts for 3%-4% of totat world greenhouse gas emissions. Enhancing energy efficiency and employing energy saving/recovering technologies such as coke dry quechning （CDQ） and top pressure recovery turbine （TRT） can be short-term approaches to the steel industry to reduce greenhouse gas emission. The long-term approaches to achieving a significant reduction in CO2 emissions from the steel industry would be through developing and applying CO2 breakthrough technologies for iron and steel making, and：through increasing use of renewable energy for iron and steel making. Thus, an overview of new CO2 breakthrough technologies for iron and steel making was made.

关键词： greenhouse gas emission CO2 reduction technology ironmaking steelrnaking

A Review of Biological Fluid Power Systems and Their Potential Bionic Applications

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Journal of Bionic Engineering 2019年第3期16卷 367-399页

作者： chunbao Liu Yingjie Wang Luquan Ren Lei Ren School of Mechanical and Aerospace Engineering Jilin University Changchun 130022 China Key Laboratory of Bionic Engineering Ministry of Education Jilin University Changchun 130022 China School of Mechanical Aerospace and Civil Engineering University of Manchester Manchester M13 9PL UK

Nature has always inspired human achievements in industry, and biomimetics is increasingly being applied in fluid power technology. Arachnida use hydraulic forces, rather than muscle, for leg ex.ensions during locomotion. Many cold-blooded and soft-bodied organisms rely on a hydrostatic skeleton to transmit force, which involves a hydraulic mechanism. Biological hydraulic transmission differs from engineering hydraulic transmission in many aspects, such as in energy transfer and transformation, the movement mode, environmental friendliness, system pressure level, and energy supplement mode. The ex.stence of a hydraulic mechanism in a biological drive requires 3 features: a power source, cavity, and working medium. The power source is similar to a hydraulic pump, and the cavity is similar to a hydraulic cylinder, both of which are necessary for producing deformation. The working medium is similar to a hydraulic fluid. Under these 3 conditions, a biological flow is generated inside or outside the body to meet the requirements of a biological drive. This paper reviews the biological organisms that employ hydraulic systems, identifies related studies on these biological hydraulic systems, and summarizes the mechanisms involved in using hydraulic pressure to achieve graceful and agile movements. This in-depth study and ex.loration of biological hydraulic systems can provide a good reference for solving the challenges of using hydraulic systems, such as increasing the energy efficiency, improving reliability, building smart components and systems, reducing the size and weight of components, reducing the environmental impact of systems, and improving and applying energy storage and redeployment capabilities. This paper also includes a detailed discussion of new ideas and innovative sources for the future development of hydraulic systems. In contrast with the bio-inspired designs used in other engineering fields, very few studies have reported on using bio-inspired methods

关键词： bionic fluid power pressurized liquids locomotion bio-inspired applications