Showing 221 - 240 results of 482 for search '"K2"', query time: 0.09s Refine Results
  1. 221

    Petrogenesis of REE-rich two-mica granite from the Indosinian Xiekeng pluton in South China Block with implications for REE metallogenesis by Defu Zhang, Defu Zhang, Tingting Lv, Xiangaung Wang, Xiangaung Wang, Mingxuan Cao, Xiquan Chen, Xiquan Chen, Yongwen Zhang, Liangxin Gong

    Published 2025-01-01
    “…The rock features high contents of SiO2 (71.3–77.73 wt%), K2O (4.42–5.62 wt%), K2O/Na2O (1.36–1.87), and with an A/CNK value of 1.11–1.27, a differentiation index (DI) of 90.28–94.47, zircon saturation temperatures of 780°C–806°C, and K/Rb, Nb/Ta, and Zr/Hf ratios of 8.40–11.04, 2.38–9.24, and 25.42–35.37, respectively. …”
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  4. 224

    Adsorpsi Congo Red dan Remazol Red oleh Silika Pasir Pantai Panjang dengan Metode Spektroskopi by Sasti Yuliafitri, Eko Swistoro

    Published 2024-12-01
    “…Based on the experiments, the results were 1) The synthesis of  silica from Bengkulu beach sand was carried out through the purification of the sample, the potassium silicate preparation (K2SiO3) by the alkali fussion method, gel making, and the silica gel preparation (SiO2). …”
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  5. 225
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    Adsorption of Oxalic Acid onto Hematite: Application of Surface Potential Measurements by Tajana Preočanin, Željka Majić, Davor Kovačević, Nikola Kallay

    Published 2007-07-01
    “…Thus, for the two protonation steps of the surface sites, the thermodynamic equilibrium constants were log K 1 = 7.1 ± 0.4 and log K 2 = 5.2 ± 0.4, respectively. Two assumptions were tested with regard to the adsorption equilibrium constant, i.e. the charge of the surface complex is exposed to the inner surface potential, ψ 0 , or to the outer surface potential, ψ d . …”
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  7. 227

    A Bayesian Network Approach to Causation Analysis of Road Accidents Using Netica by Xin Zou, Wen Long Yue

    Published 2017-01-01
    “…By taking Adelaide Central Business District (CBD) in South Australia as a case, the Bayesian network structure was established by integrating K2 algorithm with experts’ knowledge, and Expectation-Maximization algorithm that could process missing data was adopted to conduct the parameter learning in Netica, thereby establishing the Bayesian network model for the causation analysis of road accidents. …”
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  8. 228
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    Posterior Corneal Asphericity Effect on Postoperative Astigmatism after EDOF Intraocular Lens Implantation in Cataract Patients by Mark Rabinovich, Ivo Guber, Laëtitia Jessy Niegowski, Ana Maria Aramburu del Boz, Danial Al Khatib, Jean-Pascal Genestier, Jerome Bovet

    Published 2021-01-01
    “…We included data of the Q value, Kmax, K1, K2, astigmatism AL, and ACD. We performed a vectorial analysis to calculate the astigmatic vectors. …”
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  10. 230
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    General encoding of canonical k-mers by Wittler, Roland

    Published 2023-09-01
    “…., a mapping to the interval [0, σk/2−1]. The approach is introduced for canonicalization under reversal and extended to canonicalization under reverse complementation. …”
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  12. 232
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    Photoinduced Synthesis of New Diisochromenochromen-4-ones and Their Antimicrobial Activities by Mohamad Yusuf, Indu Solanki, Payal Jain

    Published 2012-01-01
    “…The later compounds are obtained from the O-alkylation of the suitable 3-hydroxy-2-aryl-4H-chromen-4-one 1a-1e with 4,4′-bischloromethyl-diphenyl in dry acetone, anhydrous K2CO3, and PTC (Bu4N+I−) under refluxing conditions. …”
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    Applying Acupuncture as Part of Multidisciplinary Treatment for Locked-in Syndrome: A Case Report by Liu Tsung-Han, Tsung-Han Yang

    Published 2025-02-01
    “…Acupuncture points used included LR3, SP3, SP4, K2, SP6, SP8, SP9, LI4, LI11, L10, GV20, EXTRA-1, and EXTRA-8. …”
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  16. 236

    Green Synthesis of Calcium/Iron-Layered Double Hydroxides-Sodium Alginate Nanoadsorbent as Reactive Barrier for Antibiotic Amoxicillin Removal from Groundwater by Marwa F. Abed, Ayad A. H. Faisal

    Published 2023-01-01
    “…We applied many kinetic models to the sorption kinetic data where the pseudo-second-order model (R2=0.9924) was used to interpret the gained data at a rate constant K2 of (0.0077) g/(mg. min) at 200 rpm. Moreover, the adsorption calculated amount reached the experimentally required value and isotherm data best fitted the Langmuir model with R2 (≥0.9486) than the Freundlich model. …”
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  17. 237

    Preparation and Thermal Properties of Eutectic Hydrate Salt Phase Change Thermal Energy Storage Material by Lin Liang, Xi Chen

    Published 2018-01-01
    “…In this study, a new cold storage phase change material eutectic hydrate salt (K2HPO4·3H2O–NaH2PO4·2H2O–Na2S2O3·5H2O) was prepared, modified, and tested. …”
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    OPTIMASI LAHAN DENGAN SISTEM TUMPANG SARI JAGUNG MANIS (Zea mays saccharata, Sturt) DAN KANGKUNG SUTRA (Ipomea reptans) DI PEKANBARU by Surtinah Surtinah, Neng Susi, Sri Utami Lestari

    Published 2018-04-01
    “… Research conducted experiments using a completely randomized design environment with three replications, and design of treatment that is the time of planting silk kale as secondary crops to the cultivation of sweet corn (K) consisting of: k1 = planting at the same time; k2 = time of planting silk kale 1 week after planting sweet corn; k3 = time of planting silk kale 2 weeks after planting sweet corn; k4 = time of planting silk kale 3 weeks after planting sweet corn; K5 = single planting sweet corn planting time = k1; k6 = single silk kale planting time = k1. …”
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  20. 240

    Benzene Oxidation on Boron-Doped Diamond Electrode: Electrochemical-Impedance Study of Adsorption Effects by Yuri Pleskov, Marina Krotova, Valerii Elkin, Valentin Varnin, Irina Teremetskaya

    Published 2012-01-01
    “…Benzene oxidation at a boron-doped diamond anode in 0.5 M K2SO4 aqueous solution is studied by cyclic voltammetry and electrochemical impedance spectroscopy. …”
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