Showing 881 - 900 results of 1,089 for search '"catalyst"', query time: 0.07s Refine Results
  1. 881

    Adaptation of an additively manufactured reactor concept for catalytic methanation with in-situ tar co-reforming of biogenic syngas by Jakob Müller, Alexander Feldner, Simon Markthaler, Peter Treiber, Jürgen Karl

    Published 2025-03-01
    “…A temperature hot spot near the inlet provides the necessary conditions (high temperature, a suitable catalyst and sufficient residence time) for the reforming of tar species, that are present in the syngas. …”
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  2. 882

    Review on the contribution of ultrasounds in layered double hydroxides synthesis and in their performances by Kalawoun, Hamed, Obeid, Michel, Ciotonea, Carmen, Chaghouri, Muriel, Poupin, Christophe, Aouad, Samer, Labaki, Madona, Gennequin, Cédric, Abi-Aad, Edmond, Delattre, François

    Published 2023-11-01
    “…These modified characteristics are responsible for improving the performances of LDHs used as catalyst precursors, adsorbents of dyes and heavy metals, fire suppressants, and other applications.…”
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  3. 883
  4. 884

    Hemodynamic disturbance and mTORC1 activation: Unveiling the biomechanical pathogenesis of thoracic aortic aneurysms in Marfan syndrome by Ming-Yuan Liu, Meili Wang, Junjun Liu, An-Qiang Sun, Chang-Shun He, Xin Cong, Wei Kong, Wei Li

    Published 2025-02-01
    “…We uncovered that activation of the mTOR complex 1 (mTORC1) within smooth muscle cells, instigated by the oscillatory wall shear stress (OSS) that stems from disturbed flow (DF), is a catalyst for TAA progression. This revelation was corroborated through both an MFS mouse model (Fbn1+/C1039G) and clinical MFS specimens. …”
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  5. 885

    Synthesis and Characterization of Copper Ferrite Nanoparticles for Efficient Photocatalytic Degradation of Organic Dyes by Julia Mazurenko, A. K. Sijo, Larysa Kaykan, Volodymyr Kotsyubynsky, Łukasz Gondek, Antoni Zywczak, Mateusz Marzec, Oleksii Vyshnevskyi

    Published 2025-01-01
    “…These magnetic properties enable efficient magnetic separation of the nanoparticles from aqueous solutions, thereby enhancing process efficiency and minimizing catalyst loss during photocatalytic applications. Optical and photocatalytic properties were investigated using spectrophotometry, revealing an optical band gap of 1.85 eV, which demonstrates potential for photocatalytic activity under visible light. …”
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  6. 886

    Chemical Vapour Deposition of MWCNT on Silica Coated Fe3O4 and Use of Response Surface Methodology for Optimizing the Extraction of Organophosphorus Pesticides from Water by Veronica W. O. Wanjeri, Sefater Gbashi, Jane C. Ngila, Patrick Njobeh, Messai A. Mamo, Patrick G. Ndungu

    Published 2019-01-01
    “…Acetylene gas was used as the carbon source and cobalt oxide as the catalyst. The chemical and physical characteristics of the materials were investigated by transmission electron microscopy (TEM), Raman spectroscopy (RS), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD), and nitrogen adsorption/desorption isotherm. …”
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  7. 887
  8. 888
  9. 889

    A highly active, low-cost CoZn ferrite electrocatalyst in oxygen reduction reactions by Qurat-Ul-Ain, Fawad Ahmad, Muhammad Irfan, Muhammad Imran Khan, Komal Ali Rao, Naseem Akhter, Abdallah Shanableh, Muhammad Babar Taj, Leonid G. Voskressensky, Rafael Luque

    Published 2025-03-01
    “…TGA shows high thermal stability of catalyst. Spinel structure remained unchanged even after electrochemical analysis as confirmed by FTIR. …”
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  10. 890
  11. 891

    A critical review of data mining in education on the levels and aspects of education by Inusah Fuseini, Yaw Marfo Missah

    Published 2024-12-01
    “…Resource availability is a catalyst for effective teaching and learning. The attributes of a learner will enable knowing the true nature of the learner to determine the prospects of the learner. …”
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  12. 892

    Factors Determining the Removal Efficiency of Procion MX in Waters Using Titanate Nanotubes Catalyzed by UV Irradiation by Vo Nguyen Xuan Que, Tran Tien Khoi, Nguyen Thi Thuy, Ta Thi Minh Dung, Dao Thi Thanh Binh, Nguyen Nhat Huy

    Published 2021-01-01
    “…Effect of reaction time, catalyst amount, pH, light wavelength and intensity, and oxidants was investigated. …”
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  13. 893

    High‐Performance Pure Water‐Fed Anion Exchange Membrane Water Electrolysis with Patterned Membrane via Mechanical Stress and Hydration‐Mediated Patterning Technique by Yeonjae Lee, Sungjun Kim, Yoseph Shin, Yeram Shin, Seongmin Shin, Sanghyeok Lee, Minseop So, Tae‐Ho Kim, Sehkyu Park, Jang Yong Lee, Segeun Jang

    Published 2025-02-01
    “…Membrane electrode assemblies (MEAs) with patterned commercial membranes demonstrated significantly improved performance and durability compared to MEAs with conventional catalyst‐coated substrates and flat membranes under pure water‐fed conditions. …”
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  14. 894

    Emission Characteristics of Hazardous Air Pollutants from Construction Equipment by Sungwoon Jung, Sunmoon Kim, Yunsung Lim, Jongtae Lee, Taekho Chung, Heekyoung Hong, Sunhee Mun, Seunghwan Lee, Woojun Jang, Jaehyun Lim

    Published 2020-06-01
    “…As a result of the after-treatment systems, which utilized a diesel oxidation catalyst (DOC) and selective catalytic reduction (SCR), CO, NMHC, and NOx emissions from the Tier 4-compliant excavator were lower than those from the Tier 3-compliant diesel engine and excavator. …”
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  15. 895
  16. 896
  17. 897

    A comparative study of the production of methyl esters from non-edible oils as potential feedstocks: Process optimization and two-step biodiesel characterization by Jassinnee Milano, Mei Yin Ong, Sieh Kiong Tiong, F. Ideris, A.S. Silitonga, A.H. Sebayang, Chung Hong Tan, I.M.R. Fattah, Zahra Fona, Nazia Hossain

    Published 2025-03-01
    “…The optimal experimental conditions for the transesterification process were 0.5 wt% of potassium hydroxide catalyst, a temperature at 50 °C, molar ratio of 9:1, time of reaction at 60 min, and agitation speed of 811 rpm. …”
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  18. 898

    Isotopic Composition of Abiogenic Gas Produced in Closed-System Fischer-Tropsch Synthesis: Implications for the Origins of the Deep Songliao Basin Gases in China by Zhifu Wei, Yongli Wang, Gen Wang, Xueyun Ma, Wei He, Ting Zhang, Xiaoli Yu, Yan-Rong Zou

    Published 2019-01-01
    “…In this study, closed-system Fischer-Tropsch synthesis was conducted at 380°C and 30 MPa for 72 h with magnetite as a catalyst. The isotopic composition of the closed-system Fischer-Tropsch synthesis gas and the composition of known abiogenic gas were systematically studied, and the deep Songliao Basin gas was also investigated. …”
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  19. 899
  20. 900

    Efficacy and prognosis of dapagliflozin in the treatment of patients with acute myocardial infarction complicated with type 2 diabetes in Xining area by Jinping Chai, Delian Li, Yanmin Liu, Xiaoling Su

    Published 2025-02-01
    “…The presence of type 2 diabetes not only signifies a chronic metabolic disorder, but also serves as a catalyst for various cardiovascular and cerebrovascular ailments such as coronary heart disease and stroke. …”
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