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从“两山”理论中探求发展和安全的辩证统一

盐城工学院学报（社会科学版） 2024年第3期37卷 19-24页

作者：刘福强福建师范大学马克思主义学院福建福州350117

党的十八大以来,习近平总书记不断丰富和完善生态文明思想,形成了以“两山”理论为核心的习近平生态文明思想。习近平总书记关于“绿水青山就是金山银山”的重要论断深刻揭示了发展与安全之间辩证统一、相辅相成的关系。基于此,在“两... 详细信息

党的十八大以来,习近平总书记不断丰富和完善生态文明思想,形成了以“两山”理论为核心的习近平生态文明思想。习近平总书记关于“绿水青山就是金山银山”的重要论断深刻揭示了发展与安全之间辩证统一、相辅相成的关系。基于此,在“两山”理论的框架下,对发展和安全辩证关系的演变过程进行梳理、对探求发展和安全辩证关系的价值旨归进行剖析,最终探索出在“两山”理论指导下统筹发展和安全的主要路径。归根结底,实现经济高质量发展与生态环境高水平保护的辩证统一,走好人与自然和谐发展之路,这是中国式现代化的本质要求,也是实现中华民族伟大复兴的应有之义。

关键词： “两山”理论中国式现代化人类命运共同体发展和安全辩证统一

滴灌灌水量对风沙土大豆根区硝态氮及水分分布的影响

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干旱地区农业研究 2024年第2期42卷 131-139页

作者：刘富强窦超银李祥瑞陈伟扬州大学水利科学与工程学院江苏扬州225009 辽宁省水利水电科学研究院辽宁沈阳110000

为合理进行风沙土地区灌溉管理,将水肥控制在根区范围内并满足大豆生长需求,以灌水量为试验因素,基于作物冠层蒸发皿蒸发量设置0.4(W1)、0.6(W2)、0.8(W3)、1.0 E_(pan)(W4)和1.2 E_(pan)(W5)5个灌溉水平,研究不同灌水量对大豆根区硝态... 详细信息

为合理进行风沙土地区灌溉管理,将水肥控制在根区范围内并满足大豆生长需求,以灌水量为试验因素,基于作物冠层蒸发皿蒸发量设置0.4(W1)、0.6(W2)、0.8(W3)、1.0 E_(pan)(W4)和1.2 E_(pan)(W5)5个灌溉水平,研究不同灌水量对大豆根区硝态氮和水分分布的影响。结果表明:增加灌水量会使土壤水分入渗深度增加10~30 cm,增大根区土壤水分分布的不均匀性,苗期W5处理剖面水分平均值较W1处理增大40.22%,W4、W5处理能够维持大豆根区6%~7%的土壤含水率。硝态氮有明显表聚现象,随着灌水量的增大,淋洗深度增加且不均匀性增大,根区土壤硝态氮平均含量降低,当灌水量高于1.0 E_(pan)时,硝态氮含量低于10 mg·kg^(-1)。W2、W3和W4处理能保证大豆根区在生育前、中、后期处于15~22 mg·kg^(-1)的硝态氮浓度区间,垂直方向上灌水量与硝态氮呈负相关关系。风沙土土壤剖面含水率均在4%~10%之间,灌水量是影响风沙土硝态氮含量和分布的主要因素之一;各处理硝态氮含量在10~30 mg·kg^(-1)之间。综合考虑作物对根区土壤水分和硝态氮含量的需求,以及土壤水分和硝态氮在根层的分布特征,推荐灌溉水量为1.0 E_(pan)。

关键词：风沙土大豆根区滴灌硝态氮水分分布

配体-金属电子转移强化类芬顿技术的破络特性与机制

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土木与环境工程学报（中英文） 2024年第4期46卷 220-230页

作者：荆世超李杰王赟宋丽刘福强南京大学环境学院南京210023 南京华创环境技术研究院有限公司南京211106

为有效分解近中性废水中典型难降解强络合物Ni-EDTA,构建配体-金属电子转移强化类芬顿技术(LFGR),基于Ni(Ⅱ)去除效能等系统分析其在近中性条件下对Ni-EDTA的破络特性,重点探究Fe(Ⅲ)与H2O2投加量、pH值、浊度、常见有机酸与常规无机盐... 详细信息

为有效分解近中性废水中典型难降解强络合物Ni-EDTA,构建配体-金属电子转移强化类芬顿技术(LFGR),基于Ni(Ⅱ)去除效能等系统分析其在近中性条件下对Ni-EDTA的破络特性,重点探究Fe(Ⅲ)与H2O2投加量、pH值、浊度、常见有机酸与常规无机盐对LFGR破络特性的影响。结合H2O2消耗观测、自由基淬灭实验、自由基信号检测与降解产物分析等科学识别LFGR体系中主要活性氧物种,并进一步剖析Ni-EDTA的破络过程与主导机制。定量比较分析LFGR与其他UV活化氧化技术去除多种重金属EDTA络合物(M-EDTA)的特性,并进一步阐明LFGR的运行成本优势。对于络合物浓度为1.0 mmol/L的近中性模拟废水,LFGR的优化反应条件为:Fe(Ⅲ)投加量为0.1 mmol/L,H2O2投加量为50 mmol/L,UV光照时间为20 min。该条件下,EDTA可完全转化,且经碱沉淀后Ni(Ⅱ)去除率可高达99.40%;LFGR对水中常见有机酸与常规无机盐呈现出良好的抗干扰性;H_(2)O_(2)主要通过与配体-金属电子转移产生的Fe(Ⅱ)发生类芬顿反应消耗;LFGR的主要作用过程是Fe(Ⅲ)置换Ni(Ⅱ)并激发配体-金属电子转移反应从而促进EDTA光解,UV进一步驱动Fe(Ⅲ)还原并加快Fe物种循环,进而强化类芬顿技术活性氧自由基(主要为·OH和·O_(2)^(-))的催化作用。LFGR可在近中性条件下实现多种M-EDTA的良好破络效果,水处理费用合计为4.21元/t,具有良好技术经济性。

关键词：络合物破络配体-金属电子转移类芬顿近中性废水

Combustion effects and emission characteristics of SO2, CO, NOx and heavy metals during co-combustion of coal and dewatered sludge

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Frontiers of Environmental Science & Engineering 2016年第1期10卷 201-210页

作者： Yiying JIN Yangyang LI fuqiang liu School of Environment Tsinghua University Beijing 100084 China

The influences of dewatered sludge blending ratio in coal on flammability index （C） and combustion characteristic index （S） and release of sulfur dioxide （SO2）, nitrogen oxide （NOx）, carbon monoxide （CO） and heavy metals （Hg, As, Cd, Pb and Cr） were studied. The impact on combustion characteristics could be ignored if less than 20% of dewatered sludge was added in coal. Besides, emission pattern experiments of NOx, SO2, CO and heavy metals were carried out in a high-temperature tubular furnace. Results showed that the conversion rate of NOx and total emission of SO2 reduced with the increase of sludge adding ratio, and a better effect of fixing sulfur could be obtained when the blending ratio reached 30%. Concentrations and distributions of five types of heavy metals in different residues （bottom ash and fly ash） as well as in flue gas were analyzed. It was shown that the characteristics of coal and sludge, as well as the volatilization of heavy metals had a great influence on the distribution of heavy metals.

关键词： sewage sludge combustion characteristic,coal emission heavy metals

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“两山”理论的辩证意蕴及时代价值

武夷学院学报 2024年第7期43卷 12-17页

作者：刘福强尤秋丽福建师范大学马克思主义学院福建福州350117

党的十八大以来,习近平总书记不断丰富和完善生态文明思想,形成了以“两山”理论为核心的习近平生态文明思想。习近平总书记关于“绿水青山就是金山银山”的重要论断蕴含着丰富的唯物辩证法思想。“两山”理论沿着“肯定—否定—否定之... 详细信息

党的十八大以来,习近平总书记不断丰富和完善生态文明思想,形成了以“两山”理论为核心的习近平生态文明思想。习近平总书记关于“绿水青山就是金山银山”的重要论断蕴含着丰富的唯物辩证法思想。“两山”理论沿着“肯定—否定—否定之否定”的辩证路径不断发展演变,同时,“绿水青山”与“金山银山”之间存在着相互依存、相互促进的辩证关系。基于此辩证思想,从人民、国家和世界三个维度探求“两山”理论的时代价值,是中国式现代化的本质要求,也是实现中华民族伟大复兴的应有之义。

关键词： “两山”理论习近平生态文明思想唯物辩证法中国式现代化人类命运共同体

The Effect of Different Reaction Mechanisms on Combustion Simulation of a Reverse-Flow Combustor

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Journal of Thermal Science 2020年第3期29卷 793-812页

作者： LU Haitao liu fuqiang WANG Yulan FAN Xiongjie liu Cunxi XU Gang Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

Three different reaction mechanisms of kerosene and flamelet models were used to simulate combustion in a reverse-flow *** comparing the effects of different mechanisms on the flow field characteristics,components and temperature distribution of the combustion chamber,the results showed that:Under different reaction mechanisms,there was a strong similarity between flow filed and temperature field,but the penetration depth and temperature distribution of local jets were affected by the *** to the different reaction paths and reaction rates,the distribution of major components had a great degree of similarity,but the concentration of intermediate components varied *** analysis,the 16 species and 17 species reaction mechanisms can simulate the flow field and outlet temperature distribution of the combustor well.

关键词： reaction mechanisms reverse-flow combustor flamelet models combustion simulation

Experimental Studies on Fuel Spray Characteristics of Pressure-Swirl Atomizer and Air-Blast Atomizer

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Journal of Thermal Science 2021年第2期30卷 729-741页

作者： WANG Kaixing FAN Xiongjie liu fuqiang liu Cunxi LU Haitao XU Gang Key Laboratory of Light-duty Gas-turbine Institute of Engineering ThermophysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

In this work,the effects of fuel temperatures and pressure drops on the flow field and spray characteristics of a pressure-swirl atomizer were discussed using the Particle Imaging Velocimetry(PIV),Planar Laser Induced Fluorescence(PLIF)and Laser Particle Size Analyzer(LPSA)*** the air-blast atomizer was selected to study the interaction of initial atomization and flow *** effect of fuel-air ratio on the air-blast atomizer were also considered,where the fuel-air ratio was varied by adjusting mass flow rate of the air and fuel *** results show that the spray angle of the pressure-swirl atomizer increases first and changes a little after the pressure drop higher than 0.5 ***,more fuel concentrate on the central region,which is mainly caused by the increase of the proportion of small droplets with lower centrifugal *** fuel temperature can improve the spray angle only in lower pressure drop,and it has a little effect under higher pressure *** addition,the fuel pressure drop has an obvious influence on the fuel distribution and flow field near the nozzle exit compared with the *** the air-blast atomizer,the spray angle increases compared with the pressure-swirl atomizer for the introduction of swirl ***,the spray angle decreases with the air mass rate increasing,and it increases with the fuel mass rate *** distribution of velocity and droplet near the nozzle exit is influenced by the air mass rate,and the fuel mass rate mainly affects the distribution in the *** fuel accumulates in the annular area below the nozzle,and the distribution of it changes little with the development along the axial direction.

关键词： pressure-swirl atomizer air-blast atomizer spray characteristic Particle Imaging Velocimetry(PIV) Planar Laser Induced Fluorescence(PLIF)

A Transmission Design in Dynamic Heterogeneous V2V Networks Through Multi-Agent Deep Reinforcement Learning

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China Communications 2023年第7期20卷 273-289页

作者： Nong Qu Chao Wang Zuxing Li fuqiang liu Department of Information and Communication Engineering Tongji UniversityShanghaiChina

In highly dynamic and heterogeneous vehicular communication networks,it is challenging to efficiently utilize network resources and ensure demanding performance requirements of safetyrelated *** paper investigates machinelearning-assisted transmission design in a typical multi-user vehicle-to-vehicle(V2V)communication *** transmission process proceeds sequentially along the discrete time steps,where several source nodes intend to deliver multiple different types of messages to their respective destinations within the same *** to rapid movement of vehicles,real-time acquirement of channel knowledge and central coordination of all transmission actions are in general hard to *** consider applying multi-agent deep reinforcement learning(MADRL)to handle this *** transforming the transmission design problem into a stochastic game,a multi-agent proximal policy optimization(MAPPO)algorithm under a centralized training and decentralized execution framework is proposed such that each source decides its own transmission message type,power level,and data rate,based on local observations of the environment and feedback,to maximize its energy *** simulations we show that our method achieves better performance over conventional methods.

关键词： V2V communication networks sequential

超级双相不锈钢S32750轧制开裂原因分析和解决措施

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金属热处理 2024年第2期49卷 291-296页

作者：王海瑞王锦永刘富强齐希伦高正磊鹤壁职业技术学院机电工程学院河南鹤壁458030 邯郸新兴特种管材有限公司河北邯郸056300

S32750钢属于耐腐蚀超级双相不锈钢,某批次的管材轧制过程中出现严重的开裂。运用光谱仪、光学显微镜、扫描电镜、拉伸试验机和冲击试验机等设备,结合轧制工艺和热挤压工艺,对材料的化学成分、非金属夹杂物、显微组织和力学性能进行了... 详细信息

S32750钢属于耐腐蚀超级双相不锈钢,某批次的管材轧制过程中出现严重的开裂。运用光谱仪、光学显微镜、扫描电镜、拉伸试验机和冲击试验机等设备,结合轧制工艺和热挤压工艺,对材料的化学成分、非金属夹杂物、显微组织和力学性能进行了分析。结果显示,轧制前组织中存在大量Fe⁃Cr⁃Mo聚集的σ金属间相,脆性大,导致锻轧钢管开裂;锻轧前采用1100℃×60 min固溶处理后,σ金属间相充分溶解,强度、硬度降低,塑韧性提高,可解决锻轧开裂问题。

关键词： S32750超级双相不锈钢轧制开裂显微组织固溶处理