Showing 7,021 - 7,040 results of 7,079 for search '"Past ', query time: 0.08s Refine Results
  1. 7021

    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
  2. 7022

    Synthesis of MgAl2O4: Sm3+ Nanophosphor and Its Photoluminescence, Electrochemical Sensing, and Photocatalytic Studies by S. N. Manjula, M. Chandrasekhar, M. R. Anil Kumar, Mir Waqas Alam, C. R. Ravikumar, H. C. Ananda Murthy, N. Basavaraju, H. Nagabhushana

    Published 2023-01-01
    “…The experiment showed 97.46% dye decolorization, respectively, after 120 min irradiation. Using the carbon paste electrode in the cyclic voltammetry (CV) technique, lead was detected in 0.1N HCl solution (MCPE). …”
    Get full text
    Article
  3. 7023

    Mechanical Properties and Deterioration Instability of Filling Body with Gangue-Cement Material Based on AE Experiment by Guofeng Yu, Yunchun Han, Xiaoyang Yu, Ren Bao, Jiaxing Guo, Qingbo Feng

    Published 2022-01-01
    “…The surface structure and roughness of gangue play an important role in the compressive performance of cement paste. The research results try to provide some guidance for efficient filling mining.…”
    Get full text
    Article
  4. 7024

    Investigation of the Compressive Strength of Fly Ash and GGBFS-Based Geopolymer Concretes According to Local Materials and Curing Conditions in Southern Iraq by noor munther

    Published 2024-12-01
    “…This research showcases the characteristics of geopolymer paste produced by treating low-calcium fly ash (FA) and ground granulated blast-furnace slag (GGBFS) with alkaline solution as activa tor. …”
    Get full text
    Article
  5. 7025

    The impact of stony coral tissue loss disease and amoxicillin treatments on coral gametogenesis by Hannah E. Mazurek, Karen L. Neely, D. Abigail Renegar

    Published 2025-01-01
    “…The unprecedented mortality of stony corals on Florida’s Coral Reef from stony coral tissue loss disease (SCTLD) was mitigated on some priority sites and corals through the use of a topical amoxicillin paste to halt disease lesion progression. One management concern about the use of antibiotics on these corals was the impact it may have on gametogenesis. …”
    Get full text
    Article
  6. 7026

    Influence of Postharvest Natural Softening Conditions on the Nutritional Quality of Safou (Dacryodes edulis H.J.Lam) Flour: Rheological Properties of the Optimized Safou Flour by Alix Ntongme Mboukap, Mathilde Julie Klang, Bilkissou Njapndounke, Marie Madeleine Nanga Ndjang, Serge Cyrille Houketchang Ndomou, Hilaire Macaire Womeni

    Published 2024-01-01
    “…These optimum conditions resulted in safou flour with 58.95%, 12.40%, 22.40%, 4.38%, 4.91%, 2207.90 mg/1000 mg, 1898.30 mg/1000 mg, and 478.540 mg/1000 mg as lipid, protein, carbohydrates, fibre, moisture calcium, phosphorus, and potassium content, respectively. In addition, the pasting temperature, peak viscosity, breakdown, holding viscosity, final viscosity, setback, setback ratio, and stability ratio of the aforementioned flour were 50.42°C, 58 cp, 0.5 cp, 57.5 cp, 61.5 cp, 4 cp, 1.07, and 1, respectively. …”
    Get full text
    Article
  7. 7027

    Alkaline Activation of Basic Oxygen Furnace Slag Modified Gold Mine Tailings for Building Material by Tebogo Mashifana, Jessica Sebothoma, Thandiwe Sithole

    Published 2021-01-01
    “…The developed GMT: BOFS geopolymers satisfied the minimum requirements for nonfacing building masonry as stipulated by the ASTM C34-17a, ASTM C129-14c 0076a, and the SANS 227: 2007 for burnt clay masonry units and can be used as a mine backfill paste and for lightweight civil applications. The geopolymers passed the toxicity characteristic leaching procedure (TCLP), and the results yielded low heavy metals concentration, indicating that the geopolymers will not leach to the environment.…”
    Get full text
    Article
  8. 7028

    Development of Strength for Calcium Aluminate Cement Mortars Blended with GGBS by Hee Jun Yang, Ki Yong Ann, Min Sun Jung

    Published 2019-01-01
    “…In addition, the strength development of mortar showed a continuous increased value up to 365 days, accounting 43.8–57.5 MPa for the mixtures, due to a formation of stratlingite, which was identified at the pastes cured for 365 days using chemical and microscopic analysis. …”
    Get full text
    Article
  9. 7029

    Theoretical innovations of Zenonas Ivinskis by Alfredas Bumblauskas

    Published 1997-12-01
    “…Two main conclusions can be drawn: 1) he did not accept the “inventory of events” in historism and noticed the absence of discussion on the programs of historical research as well as the predetermination of events based on the assumption of statehood as an arranged principle in historical synthesis. 2) Zenonas Ivinskis tried to refuse the narrative or “cut and paste” method (concept of T. J. Collingwood). An attempt was made to introduce an active relation between the researcher and historical sources; this is called “problemical historism” in the article. …”
    Get full text
    Article
  10. 7030

    Youth and the pandemic: health information imaginaries and practices while navigating COVID-19 in Nigeria by Chikezie E. Uzuegbunam

    Published 2025-01-01
    “…Dominant perceptions included the use of “copy and paste solutions” in Nigeria’s pandemic response, COVID-19 denialism, and politicization of the pandemic, leading to mistrust in government and health authorities. …”
    Get full text
    Article
  11. 7031

    Shear Performance of Concrete Beams with a Maximum Size of Recycled Concrete Aggregate by Brian Jacks Odero, Raphael N. Mutuku, Timothy Nyomboi, Zachary Abiero Gariy

    Published 2022-01-01
    “…However, the major drawback of the recycled concrete aggregate (RCA) has been the contribution of the cement paste mortar attached to the surface. The quantity of surface-attached mortar on the virgin aggregate dominates and defines the shear performance of concrete beams. …”
    Get full text
    Article
  12. 7032

    Investigating the Nature of Orientalism from a Philosophical-Historical Point of View Based on the Relationship between Subject and Object by Ghorban Elmi, Alireza Nahri

    Published 2024-05-01
    “…Modernity's engagement with the religious and cultural pasts of Europe and non-European civilizations was centered around this reconfigured subject-object dynamic.In Kantian epistemology, the understanding of the subject does not involve a direct apprehension of objects. …”
    Get full text
    Article
  13. 7033

    SYMBOLIC ANALYSIS OF CLASSICAL NEURAL NETWORKS FOR DEEP LEARNING by Vladimir Milićević, Igor Franc, Maja Lutovac Banduka, Nemanja Zdravković, Nikola Dimitrijević

    Published 2025-03-01
    “…A more complex scheme of the neural network is obtained by using the copy, move, and paste commands for the simplest unit. The number of neurons and layers can be chosen arbitrarily. …”
    Get full text
    Article
  14. 7034

    Effects of silicate modulus and GBFS content on shrinkage of alkali-activated steel slag cementitious material by Jianwei Sun, Yuehao Guo, Yan Meng, Ruiquan Jia, Jiajie Zhou, Hongyuan Gao, Jie Liu

    Published 2025-01-01
    “…By increasing both the silicate modulus and GBFS content, the pore structure of the hardened paste can be refined.…”
    Get full text
    Article
  15. 7035

    Microstructural and mechanical responses of Sn58Bi/Cu composite solder joints with 0.1wt.% Ni and carbon fiber addition by Xiangxia Kong, Zuchen Liu, Ruipeng Ma, Junjun Zhai, Zhen Pan, Xuemei Li, Fenglian Sun

    Published 2024-12-01
    “….% Ni nanoparticles were prepared by solder paste stirring method. The results indicated that the adulteration of Cf and Ni nanoparticles refines the microstructure and improves the mechanical properties of Sn58Bi (SnBi58)/Cu solder joints. …”
    Get full text
    Article
  16. 7036

    Effect of hydrophobic corrosion inhibitor on the cement hydration and leaching resistance of shotcrete by Wei Wang, Junsong Chen, Shuang Zhao, Luping Zeng, Jingshun Cai, Song Mu, Jinxiang Hong, Min Qiao

    Published 2025-07-01
    “…Isothermal calorimetry, XRD, TG-DTG and SEM were performed on accelerated cement pastes, and the outcomes demonstrate that the incorporation of hydrophobic corrosion inhibitor could play a role in delaying hydration process, which was mainly attributed to the adsorption and complexation of carboxyl groups. …”
    Get full text
    Article
  17. 7037
  18. 7038

    Molecular imprinted polymer-based potentiometric approach for the determination of carvedilol and ivabradine hydrochloride in dosage form, spiked human plasma and in presence of th... by Nermine V. Fares, Haitham A. El Fiky, Dina A. Ahmed, Maha F. Abd El Ghany, Amr M. Badawey, Mahmoud A. Tantawy

    Published 2025-02-01
    “…First, attempts were made to stabilize possible signals by synthesizing hydrophobic multiwall carbon nanotubes-based carbon paste. Precipitation polymerization was used to create molecular imprinted polymers (MIPs) for each drug. …”
    Get full text
    Article
  19. 7039

    Olfaction-based learned preference assessment without the use of motivational fear or motivational weight loss by Sara E. Moss, Ekaterina S. McCurdy, Natalya N. Thomas, Danielle Gulick, Angela M. Poff, Dominic P. D'Agostino

    Published 2025-02-01
    “…We then trained mice to associate either lemon or rose scents with a sucrose paste reward, and tested whether they demonstrated a learned preference for the sucrose-associated scent over the neutral scent. …”
    Get full text
    Article
  20. 7040

    Solution combustion synthesis of ZnO doped CuO nanocomposite for photocatalytic and sensor applications by A. Naveen Kumar, M. Balakrishna, Usha Desai, R. Rakshith, K. M. Ambika, P. Soumya, C. R. Ravikumar, S. Senthil Vadivu, Nithesh Naik

    Published 2025-01-01
    “…Solutions of glucose and ascorbic acid were effectively sensed using modified carbon paste electrodes. These innovative results can be considered for the expansion of novel resources to scale for dual applications in the areas of photocatalysis and sensors.…”
    Get full text
    Article