Showing 201 - 220 results of 243 for search '"alumina"', query time: 0.04s Refine Results
  1. 201

    Studies on HS Adsorption and Carbon Deposition over Mo-Ni/AlO Catalysts by Maria G. González, Esther N. Ponzi, Osmar A. Ferretti, Claudia E. Quincoces, P. Marecot, J. Barbier

    Published 2000-07-01
    “…The influence of molybdenum on the CO 2 reforming of methane, simultaneous sulphur poisoning and carbon formation over alumina-supported Ni catalysts was studied. A series of Ni/Al 2 O 3 catalysts modified by Mo was prepared to enable the effect of molybdenum content on H 2 S adsorption and the catalytic properties of the solids to be studied. …”
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    Article
  2. 202

    Investigating the distribution of heat transfer in a thick-walled functionally graded cylindrical shell under heat flux by Buqing Zhang, Zhiqiang Long, Guoqing Liu, Zhengxin Wu, Qiang Yan

    Published 2025-01-01
    “…Finite element analysis (FEA) utilizing ABAQUS software was used to conduct the steady-state and transient heat transport calculations in an aluminum metal/alumina ceramic shell. For a pure aluminum shell, it is about 15% of the temperature difference between the inner and outer surfaces for the inner temperature of 115 °C and the outer one of 136 °C. …”
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  3. 203

    An assessment of the pozzolanic potential and mechanical properties of Nigerian calcined clays for sustainable ternary cement blends by Samuel Adesina Adegbemileke, Sylvester Obinna Osuji, Okiemute Roland Ogirigbo

    Published 2024-12-01
    “…XRD analysis of blended pastes revealed typical phases of hydration like portlandite, calcium silicate hydrate phase, strätlingite, and ettringite, with the calcined clay blends showing reduced portlandite content, indicating absorption by the pozzolan's alumina phase.…”
    Article
  4. 204

    Partial Discharge Characteristics of Polymer Nanocomposite Materials in Electrical Insulation: A Review of Sample Preparation Techniques, Analysis Methods, Potential Applications,... by Wan Akmal Izzati, Yanuar Z. Arief, Zuraimy Adzis, Mohd Shafanizam

    Published 2014-01-01
    “…For instance, nanofillers in nanocomposites such as silica (SiO2), alumina (Al2O3) and titania (TiO2) play a big role in providing a good approach to increasing the dielectric breakdown strength and partial discharge resistance of nanocomposites. …”
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  5. 205

    Shear Bond Strength of Colored and Sandblasted Zirconia to Ceramic Veneers Fabricated by the Pressing and Layering Techniques: An In Vitro Study by Mahsa Abbasi, Behnaz Ebadian, Negin Aminianpour

    Published 2023-01-01
    “…Sixty cubic zirconia specimens (10 × 10 × 2 mm) were assigned to three groups according to their surface treatment: (I) control, (II) sandblasting with 50 μm alumina particles (S), and (III) coloring (C). Each group was subsequently divided into two subgroups according to the porcelain-veneering technique: (I) layering (L) and (II) pressing (P). …”
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  6. 206

    Purification and Characterization of Hyaluronic Acid Produced by Priestia flexa N7 by Dinh Giap Vu, Quang Tung Nguyen, Thi Cam Van Do, Thi Cuong Vu, Nguyen Phuong Dai Nguyen

    Published 2024-12-01
    “…Before purification, the crude HA was purified of toxins and low MW proteins using a mixture of activated charcoal (3%) with gamma alumina (2%) at a temperature of 25°C. Under these conditions, the yield of HA was 1720 mg/mL. …”
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  7. 207

    Adsorption removing various basic nitrogen compounds from model diesel over allochroic silica gel by Xin Hong, Yunhe Li, Chang Gao, Yonghua Zhao, Ke Tang

    Published 2018-12-01
    “…The adsorption removal of quinoline from model diesel by using alumina, diatomite, silica gel, and allochroic silica gel as adsorbents was investigated. …”
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  8. 208

    Synthesis of zeolite from rice husk ash and kaolinite clay for the removal of methylene blue from aqueous solution by Justice Hayfron, Sirpa Jääskeläinen, Samuel Tetteh

    Published 2025-01-01
    “…Zeolite was successfully synthesized using a mixture of kaolinite clay (which served as the alumina source) and rice husk ash (silica source). …”
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  9. 209

    Pozzolanic Reaction in Clayey Soils for Stabilization Purposes: A Classical Overview of Sustainable Transport Geotechnics by Kennedy C. Onyelowe, Michael E. Onyia, Duc Bui Van, Haci Baykara, Hyginus U. Ugwu

    Published 2021-01-01
    “…These whole processes lead to a pozzolanic reaction, which finally forms calcium alumina-silica hydrate. This formation is responsible for soil stabilization.…”
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  10. 210

    Simultaneous Determination of Malachite Green, Chloramphenicols, Sulfonamides, and Fluoroquinolones Residues in Fish by Liquid Chromatography-Mass Spectrometry by Yongping Chen, Sudong Xia, Xianqin Han, Zhiru Fu

    Published 2020-01-01
    “…Samples were extracted using 0.4% hydrochloric acid in acetonitrile and ethyl acetate and then were cleaned up using solid-phase extraction Cleanert Alumina N columns (500 mg) and Oasis hydrophilic-lipophilic balance (HLB) cartridges. …”
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  11. 211

    Impact of the nonlinear thermal radiation on the Arrhenius activation energy of tangent hyperbolic micropolar hybrid nanofluid flow across an extending surface by MD. Shamshuddin, Balasani Srinitha, S.O. Salawu, M. Sunder Ram

    Published 2025-03-01
    “…The hybrid nanofluid, a unique blend of silver (Ag), and alumina (Al2O3) nanoparticles in water significantly enhance the thermal properties of conventional fluids. …”
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  12. 212

    Radiation-Enhancement Properties of an X-Band Woodpile EBG and Its Application to a Planar Antenna by Fabrizio Frezza, Lara Pajewski, Emanuele Piuzzi, Cristina Ponti, Giuseppe Schettini

    Published 2014-01-01
    “…A woodpile Electromagnetic Bandgap (EBG) material has been designed, by using an in-house code that implements the Fourier Modal Method (FMM). A couple of alumina-woodpile samples have been fabricated. Several results have been collected for the transmission behaviour of the woodpile and of resonators with woodpile mirrors, in a shielded anechoic chamber, by using a vector network analyzer, in the 8–12 GHz range. …”
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  13. 213

    Processes of salt slag recycling in aluminum production to obtain powder material with a high content of aluminum oxide phases by B. M. Nemenenok, I. V. Rafalski, P. E. Lushchik, L. P. Dolgi, A. D. Rulenkov

    Published 2023-01-01
    “…It is indicated that the possibility of forming eutectic mixtures of ceramic compounds of aluminum oxide and aluminum oxynitride, which are more fusible than pure oxides and nitrides, must be taken into account when developing salt slag recycling technologies in order to obtain ceramic powder materials with a high content of alumina phases.…”
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  14. 214

    Effects of nonspecific resistance in barley genotypes obtained by cell selection by O. N. Shupletsova, S. Yu. Ogorodnikova, Ya. I. Nazarova

    Published 2020-12-01
    “…The productive traits of plants, the symptoms of oxidative stress, and the environment-forming activity of the root system were evaluated.In regenerated plants obtained in callus culture on selective in vitro media with aluminum or water deficiency, an increased ability of the root system to alkalize the medium in the rhizosphere zone (by 0.2–0.5 pH units) when grown on alumina soil was revealed. Against stressful soil backgrounds, regenerative lines induced on in vitro media with cadmium or aluminum were observed to have a low manifestation of oxidative stress symptoms, tested by the intensity of lipid peroxidation and the content of photosynthetic pigments in the leaves, which provided these genotypes with higher seed productivity (1.5–3.6 times in the number of grains, and 1.5– 3.0 times in the grain weight per plant) and adaptive advantages compared to the original genotype and regenerants induced on an in vitro medium with water deficiency. …”
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  15. 215

    Radiation effects on rotating system free convective nanofluid unsteady flow with heat source and magnetic field by Manjunatha N, M.Girinath Reddy, Ahmad Aloqaily, Sarah Aljohani, A.Rupesh Reddy, Farhan Ali, Nabil Mlaiki

    Published 2025-03-01
    “…In this particular experimental setup, the base fluids under consideration are water (H2O) and ethylene glycol (C2H6O2), while the nanoparticles being investigated consist of copper (Cu), titanium (TiO2), silver (Ag), and alumina (Al2O3). The analytical outcomes of the equations are derived through the utilization of perturbation methodology. …”
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  16. 216

    Effectiveness of heat source/sink and Lorentz force constraints in a non-Newtonian peristaltic arterial blood hybrid nanofluid past an overlapping stenotic artery by Vedhesh Dhinakaran, Keerthi Devarajan Anuradha, J.U. Viharika, Umair Khan, Nermeen Abdullah, Samia Elattar

    Published 2025-01-01
    “…Considering this the present research paper develops a Casson fluid model to investigate magnetohydrodynamic peristaltic transport of the passage of blood through slightly stenosed arteries due to the influence of copper (Cu) and alumina (Al2O3) nanoparticles. The problem is formulated using appropriate mathematical models employing non-dimensional parameters and stenosis approximations. …”
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  17. 217

    Simulation of cold storage process via Galerkin approach implementing nanoparticles by Wajdi Rajhi, Ali Basem, Ziyad Jamil Talabany, Hussein A.Z. AL-bonsrulah, Moaz Al-lehaibi, Ibrahim Ali Alsayer, Awatif M.A. Elsiddieg, Lioua Kolsi

    Published 2025-02-01
    “…The aim of this research is to simulate the unsteady cold storage process in a tank with wavy walls and fins, designed to improve the solidification of the working fluid. The loading of alumina nanoparticles within water significantly accelerates the freezing process, improving the system's overall efficiency. …”
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  18. 218

    Enhanced CO2 Capture Performance Using Methyl Diethanolamine-functionalized Silica Gels: Assessing CO2 Capture Capacity by Petpitcha Boonmatoon, Pacharapol Nokpho, Pornpote Piumsomboon, Benjapon Chalermsinsuwan

    Published 2025-01-01
    “…There are many potential solid adsorbents for CO2 capture, such as zeolites, alumina, metal‒organic frameworks (MOFs), and mesoporous silicas. …”
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  19. 219

    Gas-Sensitive Characteristics of Low-Power Semiconductor Gas Sensors to CO and H<sub>2</sub> by I. A. Taratyn, O. G. Reutskaya, G. G. Gorokh, I. V. Serdyuk, V. S. Fedosenko

    Published 2024-04-01
    “…The low-power semiconductor gas sensor on the anodic alumina substrate has been developed. Sensors with gas-sensitive semiconductor metal oxide layers based on In2O3+Ga2O3, In2O3+SnO2 and SnO2+Pd deposited from aqueous solutions with subsequent firing on sensor information electrodes are manufactured. …”
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  20. 220

    An Alternative to Clay in Building Materials: Red Mud Sintering Using Fly Ash via Taguchi’s Methodology by Suchita Rai, Dilip H. Lataye, M. J. Chaddha, R. S. Mishra, P. Mahendiran, J. Mukhopadhyay, ChangKyoo Yoo, Kailas L. Wasewar

    Published 2013-01-01
    “…“Red mud” or “bauxite residue” is a highly alkaline waste generated from alumina refinery with a pH of 10.5–12.5 which poses serious environmental problems. …”
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