Showing 961 - 980 results of 1,149 for search '"thermodynamics"', query time: 0.05s Refine Results
  1. 961

    Removal of Copper(II) Ions from Aqueous Solutions Using Natural Kaolinite by Xue-Song Wang, Jin Wang, Cheng Sun

    Published 2006-07-01
    “…The maximum adsorption capacity was found to be 16.79 mg/g at a pH value of 6.0, an initial Cu(II) ion concentration of 40 mg/dm 3 and a temperature of 313 K. Various thermodynamic parameters, viz. the standard free energy change (ΔG 0 ), the enthalpy (ΔH 0 ) and the entropy (ΔS 0 ), were evaluated for the process with the results indicating that it was spontaneous and endothermic in nature. …”
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  2. 962

    Mathematical, electrochemical, spectroscopic and microscopic monitoring of the adsorption effect of expired drugs on zinc corrosion in 3.5% NaCl solution by Arafat Toghan, Omar K. Alduaij, Nada Alqarni, Emad M. Masoud, Hanan Alhussain, Ayman M. Mostafa, Ahmed A. Farag, Ahmed Fawzy

    Published 2025-01-01
    “…In this context, the inhibitory efficacy of two environmentally friendly expired drugs, gatifloxacin (Gat) and levofloxacin (Lev), on zinc corrosion in 3.5 % NaCl solution was investigated using several techniques at different temperatures. Kinetic and thermodynamic evaluations confirmed that the adsorption strength of these compounds on the metal surface plays an effective role in their inhibitory capacity, and this certainly depends on their chemical structure. …”
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  3. 963

    Physiochemical Restrictions of Mineral Zoning of Sediment-Hosted Stratiform Copper Deposit in SW China by Yan Zhang, Runsheng Han, Shuming Wen, Pingtang Wei

    Published 2018-01-01
    “…We studied the mineral zoning in detail using a thermodynamic phase diagram method, such as log⁡fO2-log⁡fS2, pH-log⁡fO2, and pH-Eh, and discussed the constraints on the order of the minerals precipitation under different physiochemical conditions. …”
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  4. 964

    Dutasteride nanoemulsion preparation to inhibit 5‐alpha‐hair follicle reductase enzymes in the hair follicle; an ex vivo study by Mehri Memar Bashi Aval, Elham Hoveizi, Reza Mombeiny, Mostafa Kazemi, Saeedeh Saeedi, Shima Tavakol

    Published 2023-02-01
    “…Results showed the lower ratio of S/Co (higher ethanol concentration) increased the hydrodynamic nanocarriers' particle size due to thermodynamic disturbance and Ostwald ripening. In contrast, an increase in surfactant through a decrease in interfacial tension resulted in smaller nanocarriers of 32.4 nm. …”
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  5. 965

    On the Primary Ionization Mechanism(s) in Matrix-Assisted Laser Desorption Ionization by Laura Molin, Roberta Seraglia, Zbigniew Czarnocki, Jan K. Maurin, Franciszek A. Pluciński, Pietro Traldi

    Published 2012-01-01
    “…Some differences have been observed for different matrices in the formation of analyte molecule (M) ion [M+H]+, [M-H]-, M+•, and [M-2H]-•, and they have been explained in terms of ionization energies, pKa values, and thermodynamic stability.…”
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  6. 966

    Green adsorbents for water remediation: Removal of Cr(vi) and Ni(ii) using Prosopis glandulosa sawdust and biochar by Salman Syed Muhammad, Razzaq Safina, Adnan Muhammad, Rozina, Sultana Sabiha, Kamal Asif, Al-Ghamdi Abdullah Ahmed, Al Farraj Dunia Abdel Aziz, Zaman Wajid

    Published 2025-01-01
    “…The results of the isotherms and kinetic model revealed that metal adsorption processes involved multilayer formation on the biosorbent’s heterogeneous surface. Also, their thermodynamic investigation showed that the adsorption process is spontaneous and exothermic and, therefore, can be effectively utilized to remove Cr and Ni from water.…”
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  7. 967

    Melt quality induced failure of electrical conductor (EC) grade aluminum wires by Khaliq A., Rafiq M.A., Ali H.T., Ahmed F., Mehmood S., Grandfielde J., Ranjha S.A.

    Published 2017-01-01
    “…The fractured aluminum wires were subjected to Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX) analyses for an initial examination. Thermodynamic analyses of molten aluminum interaction with refractories was also carried out using FactSage at 710°C to predict the stable phases. …”
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  8. 968

    Solid-Liquid Phase Equilibria of the Ternary System (NaCl + CH3OH + H2O) at 298.15, 308.15, 318.15 K, and 0.1 MPa by Jian Shi, Jiayin Hu, Long Li, Yafei Guo, Xiaoping Yu, Tianlong Deng

    Published 2018-01-01
    “…Moreover, the calculated values of NaCl solubility data based on the CNIBS/R-K equations agreed well with the experimental results, and the thermodynamic functions in the dissolution process of NaCl in the CH3OH-H2O binary system were also calculated for further investigation of NaCl dissolution process.…”
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  9. 969

    Climatology and Teleconnections of Mesoscale Convective Systems in an Andean Basin in Southern Ecuador: The Case of the Paute Basin by Lenin Campozano, Katja Trachte, Rolando Célleri, Esteban Samaniego, Joerg Bendix, Cristóbal Albuja, John F. Mejia

    Published 2018-01-01
    “…Mesoscale convective systems (MCSs) climatology, the thermodynamic and dynamical variables, and teleconnections influencing MCSs development are assessed for the Paute basin (PB) in the Ecuadorian Andes from 2000 to 2009. …”
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  10. 970

    Towards Quantifying the Uncertainty in Estimating Observed Scaling Rates by Haider Ali, Hayley J. Fowler, David Pritchard, Geert Lenderink, Stephen Blenkinsop, Elizabeth Lewis

    Published 2022-06-01
    “…Previous studies show uncertainty in the extreme precipitation‐temperature relationship (scaling) due to various thermodynamic/dynamic factors. Here, we show that uncertainty may arise from the choice of data and methods. …”
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  11. 971

    Indian Jujuba Seed Powder as an Eco-Friendly and a Low-Cost Biosorbent for Removal of Acid Blue 25 from Aqueous Solution by L. Sivarama Krishna, A. Sreenath Reddy, W. Y. Wan Zuhairi, M. R. Taha, A. Varada Reddy

    Published 2014-01-01
    “…The pseudo-second-order kinetics was the best for the biosorption of AB25 by IJSP, with good correlation. Thermodynamic parameters such as standard free energy change (ΔG0), standard enthalpy changes (ΔH0), and standard entropy changes (ΔS0) were analyzed. …”
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  12. 972

    Site Saturation Mutagenesis Applications on Candida methylica Formate Dehydrogenase by Gülşah P. Özgün, Emel B. Ordu, H. Esra Tütüncü, Emrah Yelboğa, Richard B. Sessions, Nevin Gül Karagüler

    Published 2016-01-01
    “…To increase the thermostability of cmFDH, the conserved residue at position 1 in the catalytic domain of cmFDH is subjected to SSM. The thermodynamic and kinetic results suggest that 8 mutations on the first residue can be tolerated. …”
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  13. 973

    Fractal Analysis of Microscale and Nanoscale Pore Structures in Carbonates Using High-Pressure Mercury Intrusion by Fuyong Wang, Peiqing Lian, Liang Jiao, Zhichao Liu, Jiuyu Zhao, Jian Gao

    Published 2018-01-01
    “…., 2D capillary tube model, 3D capillary tube model, geometry model, and thermodynamic model, were used to calculate fractal dimensions of carbonate core samples from HPMI curves. …”
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  14. 974

    Kinetics of oil palm empty fruit bunch fiber pyrolysis by Bashar Abdullahi Hadi, Abdullahi Muhammad Sokoto, Aminu Bayawa Muhammad, Yahaya Alhassan, Chika Muhammad

    Published 2024-03-01
    “…The best-fitting equations were used to fit the CR model and determine the thermodynamic parameters. The reaction is diffusion regulated by nucleation and nuclei growth models, according to the Zhuravlev-Lasokin-Tempelman model, which produced the highest regression value and the best acceptable fit. …”
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  15. 975

    Optimization and Performance Analysis of a Geothermal-Based Power Generation System Based on Flash-Binary and Dual-Pressure Evaporation Organic Rankine Cycles Using Zeotropic Mixtu... by Mojtaba Nedaei, Abolfazl Keykhah, Borzo Kamary, Ehsanolah Assareh

    Published 2023-09-01
    “…The system’s performance is estimated via thermodynamic and thermoeconomic analyses. Five different zeotropic mixtures are considered the D-ORC working fluid, and their performance is compared at the optimum state. …”
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  16. 976

    Immobilization of fluorides from spent carbon cathode in a copper smelting slag by Li L., Wu G.-D., Tian F.-G.

    Published 2022-01-01
    “…The fluorides from spent carbon cathodes could be effectively solidified in a molten copper smelting slag (FeO-Fe3O4-SiO2- CaO-Al2O3) in forms of CaF2 and Ca4Si2F2O7. The results of thermodynamic analysis, chemical analysis, and XRD and EPMA analyses showed that the F solidification efficiency increased with the CaO amount and decreased with the addition of Al2O3 and SiO2. …”
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  17. 977

    Semi-Supervised Machine Learning for Fault Detection and Diagnosis of a Rooftop Unit by Mohammed G. Albayati, Jalal Faraj, Amy Thompson, Prathamesh Patil, Ravi Gorthala, Sanguthevar Rajasekaran

    Published 2023-06-01
    “…However, many of these tools require an in-depth knowledge of system behavior and thermodynamic principles to interpret the results. In this paper, supervised and semi-supervised machine learning (ML) approaches are applied to datasets collected from an operating system in the field to develop new FDD methods and to help building owners see the value proposition of performing proactive maintenance. …”
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  18. 978

    Methylene Blue Adsorption BY UV-Treated Graphene Oxide Nanoparticles (UV/n-GO): Modeling and Optimization Using Response Surface Methodology and Artificial Neural Networks by M. Venkata Ratnam, Manikkampatti Palanisamy Murugesan, Srikanth Komarabathina, S. Samraj, Mohammedsani Abdulkadir, Muktar Abdu Kalifa

    Published 2022-01-01
    “…According to correlation coefficients, the order of adsorption isotherm models is Redlich–Peterson > Temkin > Langmuir > Freundlich. Thermodynamic investigations show that MB adsorption was both spontaneous and endothermic.…”
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  19. 979

    New RELAP5-3D Lead and LBE Thermophysical Properties Implementation for Safety Analysis of Gen IV Reactors by P. Balestra, F. Giannetti, G. Caruso, A. Alfonsi

    Published 2016-01-01
    “…The latest versions of RELAP5-3D© code allow the simulation of thermodynamic system, using different type of working fluids, that is, liquid metals, molten salt, diathermic oil, and so forth, thanks to the ATHENA code integration. …”
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  20. 980

    Adsorption of Cu (II) and Cd (II) from Wastewater by Sodium Alginate Modified Materials by Yingying Zhao, Linchuan Zhan, Zhongjun Xue, Kianpoor Kalkhajeh Yusef, Hongxiang Hu, Mengjun Wu

    Published 2020-01-01
    “…., kinetic model, isothermal adsorption model, and thermodynamic model, were used to fit the experimental data. …”
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