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Hydrogel Fiber Evaporator with Vertical Channels Integrated with Dual Heat Supply/Insulation Model for Continuous Solar Desalination 认领 引用 被引量：1
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作者 Tian Wang Shuai Gao +3 位作者 Yongli Yu Zhigang Chen Lili Wang Xiansheng Zhang 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第8期185-204,共20页
Hydrogel-based evaporators offer unique advantages for seawater desalination,yet the high verticalization of water transport channels remains significantly constrained by the random arrangement of polymers.Herein,a ve... Hydrogel-based evaporators offer unique advantages for seawater desalination,yet the high verticalization of water transport channels remains significantly constrained by the random arrangement of polymers.Herein,a versatile and scalable“wet-spinning hydrogel fibers assisted with constrained alignment(HFCA)”strategy is proposed to fabricate hierarchically porous hydrogel fiber evaporator,achieving the perfectly vertical,large-scale spaces between adjacent fibers and smallscale pores within the hydrogel itself.The synergistic role of multiscale pores significantly enhances the siphon effect between fibers and the water transport capacity,while improving thermal localization,light absorption,and salt flux.Moreover,rather than employing the popular“heat isolation model”,a dual“heat supply/insulation model”is introduced for the first time in a three-dimensional evaporator,where a novel heating layer providing additional heat to the bulk water,along with an insulation layer minimizing heat loss.Together,these components create a positive net energy balance,transforming the single cold into a combined cold/hot evaporation manner on the side surface.Using this model,the HFCA evaporator exhibits the high evaporation rate(8.09 kg m−2 h−1,1 KW m−2)among the reported hydrogel-based evaporators and achieves exceptional outdoor evaporation(64.74 kg m−2 for 9 h),accompanied with salt tolerance,anti-oil fouling,and self-cleaning capacities. 展开更多
关键词 Perfect verticalization Multiscale pores Heat supply/insulation model Cold/hot evaporation Maximum utilization of energy
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A comprehensive review of Bayer red mud dealkalization processes:mechanisms,applications,and future prospects 认领 引用
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作者 Ding-Zheng Wang Jie Yang +3 位作者 Jin-Lin Yang Shao-Jian Ma Jin-Peng Feng Wei Mo 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第7期318-331,共14页
Bayer red mud,which is a major byproduct of the alumina industry,has attracted global attention owing to its high alkalinity and associated environmental risks.Primarily composed of iron,aluminum,and silicon oxides,al... Bayer red mud,which is a major byproduct of the alumina industry,has attracted global attention owing to its high alkalinity and associated environmental risks.Primarily composed of iron,aluminum,and silicon oxides,along with sodium minerals,Bayer red mud exhibits alkalinity due to the hydrolysis of residual NaOH and sodium silicates.Therefore,prolonged accumulation of red mud may deteriorate soil,water,and air quality.Existing dealkalization technologies and resource utilization strategies for red mud are reviewed.Dealkalized red mud is utilized in the production of construction materials,ceramics,catalysts,and environmental remediation.Existing dealkalization approaches include acid-base neutralization,acid-gas neutralization,and precipitation.Although these methods effectively remove soluble alkalis,their efficiency against structural alkalis is limited.In particular,despite high removal efficiency,acid neutralization generates high-salinity wastewater.Besides,acid gas neutralization integrates carbon capture or flue gas desulfurization but poses scalability challenges due to secondary pollution risks.Finally,precipitation methods are environmentally friendly but achieve lower removal rates.The limitations of these dealkalization methods for Bayer red mud and challenges such as material stability,economic viability,and regional compositional variability hinder the broader adoption of the substance.Therefore,strategies involving multi-technology integration,eco-friendly dealkalization agents,or high-value iron oxide must be explored to realize optimal dealkalization.Furthermore,artificial intelligence for real-time monitoring and life cycle assessment can be employed to determine carbon footprints.Moreover,promoting closed-loop systems can facilitate the alumina industry’s transition toward a circular economy. 展开更多
关键词 Bayer red mud Dealkalization Neutralization Precipitation Utilization Construction material
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Insight into the differences in airborne bioaerosols dynamic assembly between hospital and school environments in summer 认领 引用
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作者 Lili Wang Yupeng He +4 位作者 Xueying Li Xin Liu Li Chen Kangbo Tong Yang Yun 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第3期436-444,共9页
Hospital-influenced bioaerosols pose critical health risks due to their pathogenic potential,yet their dynamic assembly mechanisms during vulnerable time period remain poorly characterized.Through parallel sampling of... Hospital-influenced bioaerosols pose critical health risks due to their pathogenic potential,yet their dynamic assembly mechanisms during vulnerable time period remain poorly characterized.Through parallel sampling of hospital-and school-influenced bioaerosol during summer periods,we revealed distinct diurnal fluctuations and site-specific microbial assembly patterns.HYSPLIT trajectory modeling demonstrated that school-influenced bioaerosols exhibited greater meteorological source diversity than hospital counterparts,promoting stochastic assembly processes.Conversely,co-occurrence network analysis identified deterministic assembly driven by hospital bioaerosols capacity to utilize particulate-bound polycyclic aromatic hydrocarbons(PAHs).Notably,Proteobacteria-associated pathogens exhibited environmental resilience and were significantly more abundant in hospital aerosols compared to school environments.These findings challenge the conventional view of bioaerosols as passively dispersed entities,establishing a mechanistic link between anthropogenic pollution sources and pathogenic bioaerosol persistence in summer ecosystems.Our work provides critical insights for predicting microbial risks in healthcare-associated atmospheric environments. 展开更多
关键词 Bioaerosol Community assembly Component utilization Polycyclic aromatic hydrocarbons
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Modulating starch digestion kinetics via feed processing:Implications for growth and metabolism in weaned pigs 认领 引用
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作者 Nan Zhang Shuang Dong +3 位作者 Shuyu Peng Bing Dong Crystal LLevesque Yongxi Ma 《Animal Nutrition》 SCIE CAS CSCD 2026年第2期99-109,共11页
This study aimed to explore the effect of starch digestion kinetics on growth performance,serum biochemical indices,intestinal digestive function and protein deposition of weaned pigs.A total of 120weaned pigs(Duroc&#... This study aimed to explore the effect of starch digestion kinetics on growth performance,serum biochemical indices,intestinal digestive function and protein deposition of weaned pigs.A total of 120weaned pigs(Duroc×Landrace×Yorkshire,aged 35 d,weighted 9.00±0.48 kg)were randomly divided into 3 treatments:corn,the main starch source(66.7%)of diets,was processed as ground,steam-flaked,or extruded.The feed was offered as pellets.The trial lasted for 28 d.Extru sion and steamflaking can accelerate the starch digestion rate,and diets with extruded corn significantly increased serum glucose concentrations at 1 and 2 h postprandial(P≤0.05).Compared with the ground corn treatment,the steam-flaked corn diet led to a significant decrease in the average daily feed intake(ADFI)of piglets from day 1 to 14(P=0.009),and the extruded corn diet resulted in a reduction in average daily gain(ADG;P=0.057)and ADFI(P=0.012)of piglets from day 15 to 28.Additionally,both the steam-flaked corn diet and the extruded corn diet significantly reduced the ADFI of piglets during day 1to 28 compared with the ground corn diet(P=0.002).Moreover,lower serum albumin(ALB)concentration was observed in piglets fed the steam-flaked corn diet than those fed the ground corn diet on day 14(P=0.005).The serum glucagon(GCG)concentration was higher(P=0.004)in piglets fed the ground corn diet than in those fed the steam-flaked corn diet or the extruded corn diet on day 28.In addition,on day 28,the concentration of ghrelin in the extruded corn group and the concentration of aspartate aminotransferase(AST)in the steam-flaked corn group were both increased(P0.05)on expression of genes and proteins related to protein synthesis in longissimus thoracis.The results indicated that starch digestion kinetics can be effectively adjusted by feed processing,where piglets perform worse on diets with a rapid starch digestion.A relatively slow but continuous supply of glucose could spare amino acids from being catabolized in the intestinal mucosa,which may be better for piglet performance. 展开更多
关键词 Feed processing Nutrient utilization Performance Piglet Starch digestion kinetic
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Precise mineral phase transformation and separation utilization technology for ferromanganese ore 认领 引用
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作者 CHEN Jia-li GAO Peng +2 位作者 LIU Jie ZHU Yi-min ZHOU Wen-tao 《Journal of Central South University》 SCIE EI CAS CSCD 2026年第4期1626-1636,共11页
Intergrown ferromanganese ore resources are typical strategic mineral resources with huge reserves and abundant hematite,pyrolusite,and other valuable minerals,which is of great significance for its development and ut... Intergrown ferromanganese ore resources are typical strategic mineral resources with huge reserves and abundant hematite,pyrolusite,and other valuable minerals,which is of great significance for its development and utilization.This paper adopts a combination of phase transformation and magnetic separation to explore the phase transformation mechanism of Fe minerals and Mn minerals during the roasting process.The analysis of the properties of the raw ore shows that the Fe-containing and Mn-containing minerals of the intergrown ferromanganese ore are hematite and pyrolusite,respectively.The optimal conditions for controlling the mineral phase were obtained,including roasting temperature of 600℃ for 30 min,and a grinding fineness of<0.074 mm accounting for 50%.Meanwhile,a Fe grade of 61.05% with a recovery of 80.77%,and a Mn grade of 61.60% with a recovery of 87.81% were acquired.The precise mineral phase transformation(MPT)could be realized via adjusting the roasting conditions.Hematite is transformed into magnetite,while pyrolusite is transformed into manganosite,and then they were effectively separated and concentrated via magnetic separation. 展开更多
关键词 intergrown ferromanganese ore mineral transformation magnetic separation clean utilization
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Research progress of iron extraction from red mud and resource utilization of remaining tailings 认领 引用
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作者 Chao-Gang Zhou Xin-Ze Zhang +7 位作者 Yu Long Da-Chao Qi Dao-Zheng Liu Zhan-Hui Yan Qing Zhao Xu Gao Shu-Huan Wang Wei Gong 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第6期397-416,共20页
Red mud is an alkaline solid waste generated by the alumina industry.Its annual global emissions have exceeded 180 million tons,and its prolonged open storage is prone to causing soil alkalization and air pollution.Re... Red mud is an alkaline solid waste generated by the alumina industry.Its annual global emissions have exceeded 180 million tons,and its prolonged open storage is prone to causing soil alkalization and air pollution.Red mud is considered to be a potential secondary resource given its rich valuable metal content.To realize the efficient resource utilization of red mud and convert solid waste into useful resources as much as possible,related researchers have carried out various studies on the recovery of iron from red mud.The relevant literature in recent years was summarized and analyzed.The research progress of iron resource recovery technology from red mud and the resource utilization of its tailings were also reviewed.In terms of iron recovery technologies,the process principles,technical characteristics,and limitations of these technologies for traditional methods such as physical sorting,pyrometallurgy,and hydrometallurgy,as well as emerging technologies including bioleaching,biomass pyrolysis reduction,and electrochemistry,are highlighted.A comparative analysis of the applicability of various technologies provides theoretical support for the selection of iron recovery processes under different conditions.At the same time,for the characteristics of the tailings produced after iron extraction from red mud,the ways of resource utilization in the fields of building materials and cementitious materials are discussed in depth,so as to realize the efficient utilization of the components of red mud.Finally,based on the research results obtained above and the current problems of red mud resource utilization,the sustainable development direction of red mud resource utilization in the future is prospected. 展开更多
关键词 Red mud Iron recovery Iron extraction tailing Resource utilization
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China’s National Botanical Gardens:An innovative model to support global biodiversity conservation and sustainable development 认领 引用
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作者 Tuo He Zhihua Zhou +8 位作者 Hui Dong Liangchen Yuan Lixin Guo Yongteng Wang Miaomiao Zheng Yalong Qin Yufeng Gu Peter Wyse Jackson Hai Ren 《Plant Diversity》 SCIE CAS CSCD 2026年第1期219-224,共6页
Biodiversity constitutes the fundamental cornerstone of ecosystem stability and resilience,furnishing indispensable services that encompass food production,the provision of clean water,climate regulation and the contr... Biodiversity constitutes the fundamental cornerstone of ecosystem stability and resilience,furnishing indispensable services that encompass food production,the provision of clean water,climate regulation and the control of disease.Nonetheless,the planet is currently experiencing an unprecedented biodiversity crisis. 展开更多
关键词 Ex situ conservation Reintroduction Scientific research Resource collection and utilization Public education
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Mechanisms of miscible gas injection for ultra-low permeability carbonate reservoirs:A case study of the S reservoir in the H oilfield,Iraq 认领 引用
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作者 Zhou-Hua Wang Xin-Tong Zhang +6 位作者 Guang-Ya Zhu Ping Guo Nan Li Hui Liu Zhao-Ming Li Huang Liu Shuo-Shi Wang 《Petroleum Science》 SCIE EI CAS CSCD 2026年第6期3459-3471,共13页
The S reservoir is a typical Middle Eastern carbonate formation characterized by a formation temperature of 89℃,salinity of 200,000 mg/L,and permeability below 1 mD.It exhibits low and continuously declining formatio... The S reservoir is a typical Middle Eastern carbonate formation characterized by a formation temperature of 89℃,salinity of 200,000 mg/L,and permeability below 1 mD.It exhibits low and continuously declining formation pressure and single-well productivity,making water flooding inefficient.Therefore,it is essential to evaluate the feasibility of gas injection to supplement reservoir energy and provide a theoretical basis for selecting suitable injection media and parameters for field develo p ment.To address these challenges,a high-temperature and high-pressure NMR online gas displacement and long-core flooding experimental system was established.Gas expansion,minimum miscibility pressure,and dynamic core displacement experiments were conducted and integrated with numerical simulations to examine the effects of gas type,injection timing,and injection rate on microscopic displacement behavior,recovery efficiency,and flow characteristics in ultra-low-permeability carbonate reservoirs.The results indicate that,in such tight formations,macroscopic flow follows non-Darcy behavior with a distinct threshold pressure gradient,while microscopically,gas diffusion from larger pores into smaller throats promotes oil displacement.The coupling between molecular diffusion and the threshold pressure gradient jointly governs ultimate recovery efficiency,providing new insights into gas injection mechanisms in ultra-low-permeability carbonate reservoirs.Experimental findings further demonstrate that crude oil in the S reservoir exhibits a large saturation pressure difference and low viscosity.Gas injection enhances the elastic expansion capacity of crude oil by 13.68%-19.54%and reduces its viscosity by 8.08%-12.23%.Under the current formation pressure(34.45 MPa),CO2 and hydrocarbon gas achieve miscible flooding,whereas N2 remains immiscible.Miscible flooding improves small-pore oil utilization by approximately 20%,and considering both miscibility and displacement efficiency,hydrocarbon gas is recommended as the preferred injection medium.Compared with N2 immiscible flooding,hydrocarbon gas—under pulse or continuous injection—achieves more than 50%recove ry.The optimal conditions for miscible flooding include an injection rate of 0.0811-0.0908 m/d,injection pressure above the MMP,and an injection-production ratio of 1:1,resulting in a maximum recovery efficiency of up to 76%.This study establishes both a theoretical and experimental foundation for optimizing gas injection in ultra-lowpermeability carbonate reservoirs and demonstrates practical relevance by improving gas-oil mobility control,reducing emulsion stability,and enhancing separation efficiency during surface fluid processing. 展开更多
关键词 Porous carbonate Extra-low permeability Miscible gas drive Utilization degree Gas injection parameter
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Friction characteristics of hydrodynamic swashplate-bearing pair in aviation hydraulic servo motors 认领 引用
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作者 Zhenyu WANG Xiaochao LIU +5 位作者 Xingyu ZHOU Wenfu ZENG Weizhi QIAO Quanrun MOU Rui NIE Jing YAO 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第3期119-133,共15页
Hydraulic servo motors are widely used in aircraft utility systems due to their highefficiency bidirectional variable displacement drive characteristics.However,the displacement changes process leads to severe frictio... Hydraulic servo motors are widely used in aircraft utility systems due to their highefficiency bidirectional variable displacement drive characteristics.However,the displacement changes process leads to severe friction losses between the swashplate and the bearing,and effective solutions are currently lacking.To address this issue,a Hydrodynamic Swashplate-Bearing Pair(HSBP)structure is proposed for hydraulic servo motors,which avoids the direct contact problem of traditional structures.A numerical calculation model for the HSBP is established,the axial displacement phenomenon generated during the reciprocating motion of the swash plate is considered,and a local mobility method is introduced to solve the frictional characteristic pa-rameters of the new friction pair.The analysis and calculation results obtained the influence law of different working condition parameters and structural parameters on the friction characteristics.A quasi-actual friction test bench is developed to simulate the actual motion characteristics of the swashplate,simplifying the testing method for the friction pair.The experimental results show an error of less than10%compared to the calculated results.Additionally,the experimental results demonstrate that the proposed hydrodynamic swashplate bearing structure can effectively reduce the friction force during the displacement adjustment process of hydraulic servo motors by more than 90%compared to traditional swashplate bearing structures. 展开更多
关键词 Hydraulic motors Aircraft utility systems Hydrodynamic lubrication Swashplate-bearing pair Friction
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High-Value Targeted Conversion of Copper Slag as LiFePO4 Material for Lithium-Ion Batteries 认领 引用
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作者 Yuyun Li Wanquan Yu +3 位作者 Haigang Dong Chenchen Li Qi Meng Peng Dong 《Rare Metals》 SCIE EI CAS CSCD 2026年第4期447-460,共14页
The massive stockpiling of copper slag(CS)presents severe environmental and resource-waste challenges.Existing strategies for CS valorization typically yield low-value-added products.Herein,we propose an innovative hi... The massive stockpiling of copper slag(CS)presents severe environmental and resource-waste challenges.Existing strategies for CS valorization typically yield low-value-added products.Herein,we propose an innovative hierarchical regulation approach to transform CS into high-performance LiFePO4(LFP)cathode materials.The process involved alkali hydrolysis pretreatment followed by oxidative leaching with HNO3 and H2O2.This step selectively removed 71.6%of Si and 82.2%of Al impurities while enriching valuable metals,such as Zn(83.29%),Pb(57.10%),and Cu(73.60%),in the leachate.Subsequent thermodynamically guided coprecipitation and direct phosphation achieved complete Fe utilization and introduced trace Ti doping(0.28 wt%).The optimized LFP@1 and LFP@2 cathodes demonstrate exceptional electrochemical performance,exhibiting specific capacities of 108.19 and 128.21 mAh g-1 at 1C,respectively,while retaining over 97%capacity retention after 300 cycles.A comprehensive life cycle assessment confirms the environmental superiority of this process.This work successfully establishes a closed-loop strategy for CS upcycling and provides fundamental insights into impurity-phase regulation for valorizing iron-silicate-based wastes. 展开更多
关键词 copper slag hierarchical impurity regulation LiFePO4 resource utilization trace element conversion
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Pisiform Homojunction with Energy Band Bending Induced via Co-Implantation Design Enabling Fast-Charging Sodium-Sulfur Battery 认领 引用
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作者 Yanjun Gao Zujia Lu +1 位作者 Qiyao Yu Jianguo Zhang 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第9期260-289,共30页
A novel“induced-homojunction”concept proposed here is of great significance to alleviate the severe shuttling effects and poor rate-capability behavior,where the sandwiched p-n Mo2C homojunction/carbon composite ... A novel“induced-homojunction”concept proposed here is of great significance to alleviate the severe shuttling effects and poor rate-capability behavior,where the sandwiched p-n Mo2C homojunction/carbon composite is constructed by the co-implantation design of Fe and Mo-vacancy(v6Fe–Mo2C/C),enabling heterogeneous variation in n/p-type characteristics among adjacent crystal structure.Encouringly,the p-n homojunction formation with continuous band bending favors the rapid carrier transmission across the interface to endow reactive sites with high activity and strengthen polysulfides capture,hence promoting original S–S bonds cleavage,which is regarded as the critical step to suppress the shuttling-behavior and trigger conversion reactions occurrence.Crucially,high-speed ions/electrons transport effectively driven by the formed large-range internal-electric-field during the energy band alignment,ensures they timely reach the above-mentioned highly active sites and react fully,enabling the ultrafast conversion kinetics process.A conspicuous sulfur utilization(1508 mAh g-1at 0.1 A g-1)and especially the superior rate performance(1337 mAh g-1at 1 A g-1)are presented by the battery with v6Fe–Mo2C/C@S cathode.And the battery delivers a stable discharge capacity independently from the charging rate(even at 5 A g-1).This“induced-homojunction”concept achieves the significant reaction kinetics advantage to provide new insight for the exploitation of fast-charging Na–S batteries. 展开更多
关键词 Induced-homojunction Co-implantation design Fast conversion reaction kinetics High utilization efficiency Fastcharging ability
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Compressed CO2 energy storage technology and its integration with CO2 capture,utilization and storage:A review and perspective 认领 引用
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作者 Qian Wu Yang Li +1 位作者 Liang Yin Qianguo Lin 《ENGINEERING Energy》 SCIE EI CAS CSCD 2026年第2期11-43,共33页
Compressed carbon dioxide(CO2)energy storage(CCES)has emerged as a promising large-scale energy storage technology,characterized by high energy density,moderate critical temperature,and operational flexibility.Conc... Compressed carbon dioxide(CO2)energy storage(CCES)has emerged as a promising large-scale energy storage technology,characterized by high energy density,moderate critical temperature,and operational flexibility.Concurrently,carbon capture,utilization and storage(CCUS)technology represents a critical pathway toward carbon neutrality for energy systems.The integration of CCES with CCUS is attracting growing research interests due to its unique potential to synergize energy and carbon flows within a closed-loop framework.This paper provides a comprehensive literature review of technological advancements in CCES and offers a perspective on its integration with CCUS.First,the fundamental working principle,system configurations,key performance indicators,and emerging demonstration projects of CCES are introduced.Subsequently,cutting-edge research and key challenges of CCES system are reviewed,focusing on optimization of CO2-based mixed working media,efficient liquefaction of low-pressure CO2,development of low-cost and safe CO2 storage facilities,enhancement of system performance through integration,and evaluation of dynamic behaviors.A central focus is placed on the integration of CCES with CCUS,highlighting how this synergy transforms CCES from a pure storage technology into a multi-functional tool for carbon management.This integration enables infrastructure sharing,dual-function storage(for energy and CO2),and improved economics.Finally,this review identifies key directions for future research,including advancing efficient system integration,developing high-precision transient simulation models and dynamic control algorithms,ensuring long-term safety of geological reservoirs under cyclic injectionextraction operations,and establishing multi-objective optimization and multicriteria assessment frameworks to support the commercial deployment of integrated CCES-CCUS systems. 展开更多
关键词 Compressed CO2energy storage(CCES) Carbon capture utilization and storage(CCUS) Performance evaluation CCES integration CO2utilization Geological storage
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Optimization of biodiesel production from blends of waste cooking oil,animal fat,and castor seed oil for sustainable renewable energy development in Thailand 认领 引用
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作者 Sunti Phewphong Wuttichai Roschat +10 位作者 Noppharat Khotsuno Chaiwat Janlakorn Tappagorn Leelatam Bunterm Maneerat Aekkaphon Thammayod Sumana Tawil Preecha Moonsin Prawit Suwannarong Boonyawan Yoosuk Pathompong Janetaisong Vinich Promarak 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2026年第2期1-17,共17页
The increasing global emphasis on sustainable energy has highlighted the need for alternative biofuels,particularly in agricultural countries like Thailand.However,challenges remain in utilizing nonedible and waste-ba... The increasing global emphasis on sustainable energy has highlighted the need for alternative biofuels,particularly in agricultural countries like Thailand.However,challenges remain in utilizing nonedible and waste-based feedstocks due to poor fuel properties and limited conversion efficiency.This study addresses these gaps byexploring the potential of underutilized and low-cost feedstocks-castor seed oil(CSO),waste cooking oil(WCO),and animal fat(ANF)-to produce high-quality biodiesel.The novelty of this work lies in optimizing ternary blends of these diverse feedstocks to overcome individual limitations,especially the high viscosity of CSO caused by its high ricinoleic acid content(89.26%).CSO was extracted using hexane maceration,yielding 50.07%±1.28%(mass)oil.VariousWCO:ANF:CSO ratios were investigated to improve fuel properties,and their chemical composition and physicochemical characteristics were analyzed using GC,1H-NMR,and FT-IR techniques.Two optimized blends-50:40:10 and 50:30:20-achieved significantly reduced viscosities(4.31 and 4.90 cSt,1 cSt=1 mm2·s-1),meeting ASTM D6751 and EN 14214 standards.These blends also exhibited high methyl ester content(>96.5%),good oxidative stability,and favorable coldflowproperties(pour and cloud points as low as-4Ⅶ℃).To evaluate reaction efficiency,transesterification kinetics were modeled using pseudo-first-orderassumptions.The ternary blend containing higher ANF content showed an enhanced reaction rate constant of 8.94×10-1h-1,indicating improved conversion efficiency.Engine performance tests using agricultural diesel engines demonstrated comparable power output to conventional diesel,while emissions of CO2,CO,HC,and NO2were significantlyreduced.Furthermore,performance of the biodiesel blends was similar to commercial B10 and B20 fuels.In summary,this study presents an innovative approach to biodiesel production by combining CSO,WCO,and ANF in optimal ratios to yield a renewable,cost-effective,and environmentally friendly fuel. 展开更多
关键词 Waste cooking oil Animal fat Castor seed oil Blending Biodiesel production Biofuel utilization in farming
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Triazole ring functionalized poly(heptazine imide):Leveraging donoracceptor configuration toward enhanced solar-driven H2O2 synthesis 认领 引用
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作者 Sue‑Faye Ng Joel Jie Foo +8 位作者 Karlo Nolkemper Zahra Hajiahmadi Jaya Bharti Nannan Hou Jiankang Zheng Thomas D.Kühne Markus Antonietti Christian Mark Pelicano Wee‑Jun Ong 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2026年第8期140-155,共16页
Light-driven synthesis of hydrogen peroxide(H2O2)presents an ideal pathway for sustainability as compared to the traditional anthraquinone process.Herein,we introduce a strategic approach for functionalizing pol... Light-driven synthesis of hydrogen peroxide(H2O2)presents an ideal pathway for sustainability as compared to the traditional anthraquinone process.Herein,we introduce a strategic approach for functionalizing poly(heptazine imide)with triazole groups via a one-step calcination process using alkali-metal salts(NaCl/KCl/LiCl).Featuring a donor-acceptor framework that promotes singlet electron dissociation,the optimal catalyst(KNa)displayed outstanding photocatalytic performance,achieving H2O2 production at 9.32 mmol L-1 h-1 and benzaldehyde(BAD)generation at 8.14 mmol L-1 h-1.KNa reached an apparent quantum efficiency of 11.58%at 420 nm,in the absence of noble-metal cocatalysts.It also exhibited an electron-hole utilization close to unity(89%),indicating its efficiency in driving photoredox reactions.Mechanistic studies conducted through electrochemical measurements and scavenger tests revealed that KNa facilitated a 2-electron pathway for H2O2 production,with photogenerated charges and radicals(electron,hole,O2•–,1O2)participating in the reaction.A shift in electron density and enhanced O2 adsorption observed from computational analysis reflects the donor-acceptor effect of the terminal triazole units on PHI.The versatility of KNa for other photochemical reactions was also exemplified by its simultaneous generation of H2O2(1.11 mmol L-1 h-1)and furfuraldehyde(0.75 mmol L–1 h–1).As such,this research paves an in-depth understanding of synergistic dual-functional photocatalysts for photoredox reactions. 展开更多
关键词 Carbon nitride Photocatalyst Electron-hole utilization H2O2production Benzaldehyde production
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Linking nitrite accumulation to shift in carbon utilization of denitrification:from single to composite electron donor 认领 引用
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作者 Qingtao Liu Rui Du +1 位作者 Jiarui Fan Yongzhen Peng 《ENGINEERING Environment》 SCIE EI CAS CSCD 2026年第2期13-28,共16页
The role of organic carbon source as electron donor in incomplete denitrification,particularly in nitrite(NO2−)accumulation,remains crucial yet poorly understood.A detailed understanding of carbon and nitrogen m... The role of organic carbon source as electron donor in incomplete denitrification,particularly in nitrite(NO2−)accumulation,remains crucial yet poorly understood.A detailed understanding of carbon and nitrogen metabolic interactions is essential for advancing technologies that integrate partial denitrification(PD)with anammox.In this study,the carbon transformation and gradient utilization of various volatile fatty acids(VFAs)were explored to elucidate their impacts on nitrate(NO3−)and NO2−reduction during PD.Long-term experiments revealed that composite VFAs(a mixture of acetate,propionate and butyrate)achieved the highest nitrate-to-nitrite transformation ratio(NTR)of 79.1%,outperforming single VFA(69.5%with acetate and 69.4%with propionate).The NO2−accumulation during PD was strongly influenced by the utilization of exogenous,endogenous and extracellular carbon,which varied significantly with VFAs type and dosage.Polyhydroxybutyrate(PHB)served as the primary endogenous electron donor in acetate-driven PD,promoting modest NO2−accumulation,while polyhydroxyvalerate(PHV)along with glycogen(Gly)was the key contributor in propionate-driven PD,supporting complete NO3−reduction.In contrast to single VFA-driven PD,the lower levels and delayed utilization of PHB and PHV in composite VFAs-driven PD enabled more stable and efficient NO2−accumulation.Furthermore,metagenomic analysis illuminated that the transition from single VFA to composite VFAs strengthened the potential for both electron production and their transport to NO3−reductase.Thauera was always the core denitrifier demonstrating strong adaptability to various VFAs.This study provides mechanistic insights into organic carbon-regulated NO2−accumulation,filling the gap regarding dynamic changes in carbon utilization during PD. 展开更多
关键词 Partial denitrification Single VFA Composite VFAs Gradient carbon utilization Nitrite accumulation and reduction
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Mechanical properties and energy evolution characteristics of magnesium slag-blast furnace slag-based backfill with different curing ages and magnesium slag contents 认领 引用
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作者 YANG Xiao-bing YANG Jian +6 位作者 WANG Xi YIN Sheng-hua ZHANG Xi-zhi LI Gong-cheng CHEN Xun QI Yao-bin CHEN Wei 《Journal of Central South University》 SCIE EI CAS CSCD 2026年第5期2360-2385,共26页
Utilizing solid waste resources and lowering backfill costs are made possible by the preparation of cementitious materials as cement substitutes using magnesium slag(MS)and blast furnace slag(BFS).Uniaxial compression... Utilizing solid waste resources and lowering backfill costs are made possible by the preparation of cementitious materials as cement substitutes using magnesium slag(MS)and blast furnace slag(BFS).Uniaxial compression tests were carried out on MS-BFS-based backfill with different MS contents(20%,30%,40%,and 50%)and curing ages(3,7,and 28 d)to investigate their effects on the mechanical properties and energy evolution characteristics of the MS-BFS-based backfill.The coupled effects of curing age and MS content on the compressive strength and elastic modulus of the MS-BFS-based backfill are discussed.The energy damage evolution characteristics,energy distribution characteristics,and energy indexes at the peak stress point of the MS-BFS-based backfill were examined,and an energy damage constitutive model was constructed based on energy dissipation.The results show that with increasing curing age,the brittleness of the MS-BFS-based backfill specimen itself is gradually enhanced.With increasing MS content,the post-peak brittle deformation capacity of the MS-BFS-based backfill at all curing ages is enhanced,while post-peak plasticity diminishes.A moderate amount of MS(30%)improves the strength properties of the backfill and provides similar enhancement at all curing ages.On the 28th day,the strength and elastic modulus of the backfill with 30%MS content can reach 7.677 and 1317.063 MPa,respectively.The established two-factor coupling function can better represent the coupled effect of curing age and MS content on the mechanical parameters and energy indexes of the MS-BFS-based backfill.After introducing the pre-peak compaction coefficient,the damage constitutive model based on energy dissipation effectively characterizes the stress−strain behavior of the MS-BFS-based backfill.The findings can provide support for the application and stability analysis of MS-BFS-based backfill. 展开更多
关键词 solid waste resource utilization magnesium slag-blast furnace slag-based backfill magnesium slag content mechanical properties energy damage evolution coupled effects
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Personalized Differential Privacy Graph Neural Network 认领 引用
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作者 Yanli Yuan Dian Lei +3 位作者 Chuan Zhang Zehui Xiong Chunhai Li Liehuang Zhu 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2026年第2期498-500,共3页
Dear Editor,This letter addresses the critical challenge of preserving privacy in graph learning without compromising on data utility.Differential privacy(DP)is emerging as an effective method for privacy-preserving g... Dear Editor,This letter addresses the critical challenge of preserving privacy in graph learning without compromising on data utility.Differential privacy(DP)is emerging as an effective method for privacy-preserving graph learning.However,its application often diminishes data utility,especially for nodes with fewer neighbors in graph neural networks(GNNs). 展开更多
关键词 graph neural networks gnns personalized differential privacy graph learning privacy preservation data utility preserving privacy graph neural network
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Catalysts and modification strategies for CO2 capture and in-situ electroreduction 认领 引用
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作者 Qingman Niu Mingzhu Yue +5 位作者 Bingkun Li Lu Liu Wenfu Xie Min Li Tianyu Zhang Qiang Wang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第3期287-318,共32页
As atmospheric CO2 concentration continues to rise,carbon capture and utilization(CCU)technology has emerged as a critical strategy toward achieving carbon neutrality.CCU offers a dual advantage of mitigating CO_(2... As atmospheric CO2 concentration continues to rise,carbon capture and utilization(CCU)technology has emerged as a critical strategy toward achieving carbon neutrality.CCU offers a dual advantage of mitigating CO2 emissions while producing value-added chemicals and fuels.However,conventional CCU strategies typically decouple the CO2 capture and electrochemical conversion processes,resulting in increased system complexity,higher energy demands,and limited economic viability.Building an integrated system of CO2 capture and in-situ electroreduction can bridge the technological gap,reduce costs,and ultimately enhance carbon cycle efficiency.In this review,we highlight recent advances in CO2 capture and in-situ electroreduction technologies.We first evaluate the strengths and limitations of conventional CCU technologies and the emerging CO2 capture and direct utilization technologies.Subsequently,we summarize the breakthroughs in multifunctional catalyst systems and key catalyst optimization strategies,and analyze the mechanisms behind the performance improvement.Meanwhile,we also discuss the application progress of in-situ techniques and theoretical calculations in CO2 capture and in-situ electroreduction.Finally,we outline the unresolved scientific and engineering challenges and propose future research directions to accelerate the development of CO2 capture and in-situ electroreduction. 展开更多
关键词 CO2capture In-situ electroreduction Carbon capture and utilization Electrocatalysts Optimization strategies Catalytic mechanism
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A scheme of terrestrial system of Pakistan and the utilization and protection of its natural resources 认领 引用
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作者 WU Shaohong XIN Keying +3 位作者 SU Fenghuan LIU Lulu JIANG Ning CUI Peng 《Journal of Geographical Sciences》 SCIE CSCD 2026年第6期1369-1400,共32页
The comprehensive pattern of the natural environment constitutes a complex system shaped by interactions among multiple natural elements,including geology,terrain,climate,hydrology,soil,and biodiversity.The regional s... The comprehensive pattern of the natural environment constitutes a complex system shaped by interactions among multiple natural elements,including geology,terrain,climate,hydrology,soil,and biodiversity.The regional structure that embodies this complexity is defined as the comprehensive natural terrestrial system.Consequently,this system provides an integrated perspective for understanding the overall characteristics of the natural environment and resources.Pakistan,with agriculture as its core economic sector,has a natural environment that is inherently linked to its topographic and climatic conditions.Its geographical environmental conditions are similar to those of China.Through analysis of Pakistan's geological,geomorphological,climatological,hydrological,and vegetation conditions,we adopted the methodology of China's comprehensive natural regionalization to establish a comprehensive natural terrestrial system scheme for Pakistan.Hierarchically,this scheme is divided into 3 major regions,5 temperature zones,8 humidity areas,and 23 natural regions.The scheme reveals the diversity of Pakistan's natural environment and its three-dimensional geographical zonality characteristics.Furthermore,this study analyzes the ecological advantages,constraints,and resource development potential of each regional unit and proposes targeted strategies for ecological conservation and socioeconomic development.The scheme provides a scientific basis for the sustainable socioeconomic development of Pakistan. 展开更多
关键词 comprehensive natural terrestrial system geographic zonality natural resources utilization and protection Pakistan
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Dynamic Analysis of a Wind-Wave Integrated Floating Energy System Supported by Barge-Type Platform 认领 引用
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作者 DING Jie-yi SHI Zhao-bin +6 位作者 YIN Jia-qing YANG Yang YU Jie LIU Ying-yi Musa BASHIR LI Chun CHEN Shun-hua 《China Ocean Engineering》 SCIE EI CSCD 2026年第1期39-52,共14页
The integrated floating energy system(IFES)comprising floating offshore wind turbines(FOWTs)and wave energy converters(WECs)presents a promising solution for reducing energy costs and enhancing motion stability.This s... The integrated floating energy system(IFES)comprising floating offshore wind turbines(FOWTs)and wave energy converters(WECs)presents a promising solution for reducing energy costs and enhancing motion stability.This study develops an innovative barge-type IFES integrated with multiple Wavestar prototype WECs to address this research need.A fully coupled framework is proposed for the aero-hydro-servo-elastic dynamic analysis of the windwave IFES concept under environmental conditions.The study analyzes time-varying platform motions and power characteristics of the IFES concepts compared to the FOWT.Results indicate that the standard deviations of platform roll and pitch decrease significantly due to the WEC integration under the most examined load cases(LCs).The system achieves a maximum reduction of 71.04%in rolling fluctuation under 16 m/s wind speed,while platform pitch decreases by 49.65%.The IFES demonstrates increased output power across all examined LCs,while tower-base loads decrease by over 20%under a wind velocity of 11 m/s.Additionally,the results indicate that the rotational dynamics of the IFES deteriorate with increasing wave period,as resonance arises when the wavelength exceeds twice the separation distance between the platform and the WEC.This phenomenon was further verified through three modified design concepts.These findings provide valuable references for offshore wind-wave hybrid system design. 展开更多
关键词 floating offshore wind turbine coupling effect power utilization efficiency dynamic modelling
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