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221
On-purpose Propylene Production from Light Naphtha over Zeolite-based Composite with Low Energy Consumption
Published 2025-07-01“…The Fe-Ga-Al-MFI zeolite as matrix component, containing each heteroatom at adequate ratio in the zeolite framework, exhibited both acid strength suitable for generating light olefins selectively and enhanced activity for dehydrogenation of light alkanes to alkenes, so that high overall yields of light olefins (ethylene, propylene and butenes) were attained by suppressing aromatics formation compared to light-naphtha cracking over conventional Al-MFI zeolite (ZSM-5). …”
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222
Experimental Study on Tunnel Failure Mechanism and the Effect of Combined Anti-Dislocation Measures Under Fault Dislocation
Published 2025-01-01“…Taking the tunnels crossing active faults in China’s Sichuan–Tibet Railway as the research background, experimental studies were conducted using a custom-developed split model box. …”
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223
Upgrading of Pyrolysis Bio-Oil by Catalytic Hydrodeoxygenation, a Review Focused on Catalysts, Model Molecules, Deactivation, and Reaction Routes
Published 2024-09-01“…Consequently, bio-oil needs to be upgraded by physical processes (filtration, emulsification, among others) and/or chemical processes (esterification, cracking, hydrodeoxygenation, among others). In contrast, hydrodeoxygenation (HDO) can effectively increase the calorific value and improve the acidity and viscosity of bio-oils through reaction pathways such as cracking, decarbonylation, decarboxylation, hydrocracking, hydrodeoxygenation, and hydrogenation, where catalysts play a crucial role. …”
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224
Investigation of the mechanism and application of pressure relief roadway in preventing rock burst
Published 2025-08-01“…Then, comprehensive prevention and control technical schemes such as active pre-cracking measures for hard roof, high-strength depressurization measures for coal body, multi-layer support system for surrounding rock and strong support for roadway with advanced support are put forward. …”
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225
Reconstruction of average January temperatures during the early Holocene in the North-East of the Bolshezemelskaya tundra
Published 2020-11-01“…Analysis of a series of 14C dates showed that peatland near Vorkuta was actively formed between 10.5 and 6 cal. ka BP. Winter conditions in the Vorkuta area were quite severe, that favored to frost cracking of the peatland and syngenetic growth of ice wedges within the drier sites and peat-soil wedges within the watered sites. …”
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226
Study on the Mechanism of Diffusion Stress Inducing Anode’s Failure for Automotive Lithium-Ion Battery
Published 2025-01-01“…The results show that as the discharge C-rate increases, the intercalation and deintercalation of lithium ions in the anode become more active, leading to greater diffusion stress. This results in noticeable cracking in the anode material, with significant particle fragmentation, ultimately causing an increase in internal resistance.…”
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227
Magnetic Nanocomposites Based on Iron Oxides as Catalysts of Oxidation Reactions
Published 2024-11-01“…The drawbacks may include the leaching of active components; a decrease in saturation magnetization in comparison with the bulk magnetite; a limited accessibility of active sites due to diffusion through the shells; the complicated composition and structure of the nanomaterials; a decrease in the activity and specific surface area; and a limited number of magnetic compounds with acceptable characteristics. …”
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228
Various characteristics of Ni and Pt–Al2O3 nanocatalysts prepared by microwave method to be applied in some petrochemical processes
Published 2014-03-01“…The 5% Ni–γ–Al2O3 sample was found to be the most active in dehydration of ethanol to produce ethylene, as well as in n-hexane cracking. …”
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229
Application of Deep Learning and Unmanned Aerial Vehicle on Building Maintenance
Published 2021-01-01“…Therefore, herein, this study proposes a convolutional neural network (CNN) model for image-based automated detection and localization of key building defects (efflorescence, spalling, cracking, and defacement). Based on a pretrained CNN VGG-16 classifier, this model applies class activation mapping for object localization. …”
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230
Jet forming of Al/PTFE-W/Cu double-layer liner considering reactivity and damage to medium-thick concrete target
Published 2025-05-01“…The secondary reaction promotes the increase of the reaction degree, which leads to the cracking and crack propagation of the concrete target center. …”
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231
Research Progress on Composite Structure of Warships in Impact Protection
Published 2025-02-01“…The paper also discussed challenges related to the strength of material interfaces, the complexity of structures, and manufacturing difficulties, noting that poor interlayer bonding under extreme impact conditions may lead to material layer separation or cracking and weaken the protective efficacy. Future research should focus on the development of nanomaterials, polymer materials, and smart materials, as well as the implementation of multifunctional integrated designs, so as to enhance the stealth, anti-detection, and active defence functions of protective structures. …”
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232
Tribocorrosion resistance of the CoCrFeNiMox laser-clad coatings on Ti6Al4V in three different circumstances
Published 2025-05-01“…This further caused the formation of more micro-galvanic cells, accelerating the active dissolution. Wear mechanism of the coatings was determined as micro-cutting + active dissolution + oxidation + brittle micro-peeling.…”
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233
Influence of Pt nanoparticles modified by La and Ce oxides on catalytic dehydrocyclization of n-alkanes
Published 2015-06-01“…Thus, modification of the Pt/Al2O3 catalyst by La, resulted in a more active and selective reforming catalyst.…”
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234
Prediction of the Morphological Characteristics of Asymmetric Thaw Plate of Qinghai–Tibet Highway Using Remote Sensing and Large-Scale Geological Survey Data
Published 2025-05-01“…The importance of the effect of mean average ground temperature (MAGT) on the active layer thickness is 80.58%.…”
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235
Design, Synthesis, and Performance of Novel Nano‐CoO/NiO‐loaded and Sulfonation‐Modified ZSM‐5 Composite Catalyst for In Situ Conversion of Oil Shale
Published 2025-01-01“…When the loading amount of nano‐CoO/NiO was 20 wt% and the silicon/aluminum ratio of ZSM‐5 was 40–50, the required activation energy for oil shale cracking was as low as 43.64 kJ/mol, the yield of oil products was as high as 15.46 wt%, and the content of organic compounds in medium‐/low‐carbon hydrocarbon was as high as 71.50%. …”
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236
Study on Large Deformation Prediction and Control Technology of Carbonaceous Slate Tunnel in Lixiang Railway
Published 2022-01-01“…The tunnel deformation can be effectively controlled by strengthening the geological work, optimizing the design parameters (enhancing the support stiffness, multiple support, and increasing the reserved deformation), and mining active reinforcement.…”
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237
The influence of cation, anion and water content on the rate of formation and pore size distribution of zeolite ZSM-5
Published 2009-07-01“…Under identical and replicated preparation and testing conditions, the synthesis time, Alincorporation, productyield, acidity, morphology, pore size distribution and catalytic activity were affected. An ion pair combination of Na+/NO3 - allowed the formation of ZSM-5 with enhanced mesoporosity within 3 h in a high-water environment, whereas ZSM-5 prepared with the Na+/SO42 - combination had enhanced n-hexane cracking activity. …”
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238
Synthesis and characterization of MCM-41-supported nano zirconia catalysts
Published 2015-03-01“…As the SZ loading increases, the surface acidity of the mesoporous catalysts was enhanced, this was reflected by the higher catalytic activity toward cumene cracking and isopropanol dehydration.…”
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239
Comprehensive evaluation of low-temperature properties of PPA/CR/SBS composite modified asphalt binder and its mixtures
Published 2025-09-01“…Results indicate that all composite-modified binders outperform SBS-modified asphalt binder in low-temperature rheological properties. Activated crumb rubber (ACR) markedly decreases the risk of low-temperature cracking, whereas PPA addition enhances performance but slightly increases the cracking risk. …”
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240
The Impact of Bank Fintech on Corporate Short-Term Debt for Long-Term Use—Based on the Perspective of Financial Risk
Published 2025-04-01“…This study verified the “Porter’s Risk Mitigation Hypothesis” of Fintech, providing empirical evidence for effectively cracking the financial vulnerability caused by debt maturity mismatch and deepening financial supply-side reform.…”
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