Showing 621 - 640 results of 1,341 for search '"column"', query time: 0.05s Refine Results
  1. 621

    Spatio-temporal behavior of atmospheriC concentration of NO2 using OMI sensor and its effect on precipitation in Iran by abolhassan gheibi, ali soleymani, hossein malakooti

    Published 2025-03-01
    “…Based on data derived from the OMI sensor in Iran, the average vertical column concentration of nitrogen dioxide during this period revealed that the highest concentration was observed in the troposphere. …”
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    Article
  2. 622

    Dynamic Properties of Clean Sand Modified with Granulated Rubber by Dervis Volkan Okur, Seyfettin Umut Umu

    Published 2018-01-01
    “…A total of 40 stress-controlled tests were performed on an integrated resonant column and dynamic torsional shear system. The effects of the relative size and proportion of the rubber on the dynamic characteristics of the mixtures are discussed. …”
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  3. 623

    A NEW SOLUTION ALGORITM FOR THE TRANSPORTATION MODEL by Sait Patır

    Published 2009-12-01
    “…With this new algorithm and proposed two rules; the solution of the problem is much more optimal than the existing ones in case of the same values in the same column or rows and alternative ones. For this purpose, two model problems were first solved by the new method and then by Least Cost and Vogel method (without North-West Diagonal method); and then the results were compared. …”
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    Article
  4. 624

    CALCULATION OF CORRECTION FACTORS FOR EPITHERMAL NEUTRON SELF-SHIELDING IN Au-197 by Phạm Ngọc Sơn, Bạch Như Nguyện, Trịnh Thị Tú Anh, Nguyễn Đắc Châu

    Published 2018-08-01
    “…In this research, the characteristics of neutron irradiation facility at the thermal column of the Dalat Nuclear Research Reactor were used as the input parameters for the neutron source definition. …”
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    Article
  5. 625

    Effectiveness and Safety of Preoperative Halo Gravity Traction-Assisted Posterior Spinal Fusion Surgery for Severe and Rigid Scoliosis: A Comparative Matched-Cohort Study by Yangpu Zhang, Bo Han, Jianqiang Wang, Yuzeng Liu, Yiqi Zhang, Yong Hai, Lijin Zhou

    Published 2024-01-01
    “…In the preoperative surgical planning phase before HGT treatment, 26 patients were initially considered candidates for 3-column osteotomy (3CO), while one patient was evaluated as suitable for posterior column osteotomy (PCO). …”
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    Article
  6. 626

    Analysis of the long-range transport of the volcanic plume from the 2021 Tajogaite/Cumbre Vieja eruption to Europe using TROPOMI and ground-based measurements by P. Hedelt, J. Reichardt, F. Lauermann, B. Weiß, N. Theys, A. Redondas, A. Barreto, O. Garcia, D. Loyola

    Published 2025-01-01
    “…This study provides an analysis of <span class="inline-formula">SO<sub>2</sub></span> vertical column density (VCD) and layer height (LH) measurements of the volcanic plume obtained with Sentinel-5 Precursor/TROPOspheric Monitoring Instrument (TROPOMI), which are compared to the observations at several stations across the Canary Islands. …”
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    Article
  7. 627

    Laboratory Rotational Spectroscopy Leads to the First Interstellar Detection of Singly Deuterated Methyl Mercaptan (CH2DSH) by Hayley A. Bunn, Silvia Spezzano, Laurent H. Coudert, Jean-Claude Guillemin, Yuxin Lin, Christian P. Endres, Brant Billinghurst, Olivier Pirali, Jes Jørgensen, Valerio Lattanzi, Paola Caselli

    Published 2025-01-01
    “…We report the identification of 46 transitions, including eight relatively unblended lines, resulting in a derived column density of (3.0 ± 0.3) × 10 ^14 cm ^−2 . The column density ratio for HDCS/CH _2 DSH compared to HDCO/CH _2 DOH suggests a difference in the interstellar chemistry between the sulfur and oxygen complex organics, in particular a different link between H _2 CO and CH _3 OH and between H _2 CS and CH _3 SH. …”
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    Article
  8. 628

    RP-HPLC Determination of Atomoxetine Hydrochloride in Bulk and Pharmaceutical Formulations by H. R. Prajapati, P. N. Raveshiya, J. M. Prajapati

    Published 2011-01-01
    “…The separation was done by a PerkinElmer Brownlee analytical C8 column (260 mm x 4.6 mm, 5 µm) using methanol: 50 mM KH2PO2 buffer (PH adjusted to 6.8 with 0.1 M NaOH), 80:20 v/v as an eluent. …”
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  9. 629

    Separation of cis- and trans-Asarone from Acorus tatarinowii by Preparative Gas Chromatography by H. L. Zuo, F. Q. Yang, X. M. Zhang, Z. N. Xia

    Published 2012-01-01
    “…The compounds were separated on a stainless steel column packed with 10% OV-101 (3 m × 6 mm, i.d.), and then the effluent was split into two gas flows. …”
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  10. 630

    A Branch-and-Price Algorithm for Balancing Two-Sided Assembly Lines with Zoning Constraints by Qidong Yin, Xiaochuan Luo, Julien Hohenstein

    Published 2021-01-01
    “…We further propose a branch-and-price (B&P) algorithm that integrates the column generation approach into a branch-and-bound frame. …”
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    Article
  11. 631

    Activity-Guided Isolation of Antioxidant Compounds from Andrographis stenophylla Leaf by Neelaveni Thangavel, Jayanta Kumar Gupta

    Published 2010-01-01
    “…Methanol extract was subjected to column chromatographic separation over silica gel G using ethyl acetate: formic acid: acetic acid: water. …”
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    Article
  12. 632

    Solution for harvesting wave energy with Wells turbines and protection of the Black Sea coast by Budea Sanda, Simionescu Ștefan-Mugur, Florea George-Fabian

    Published 2025-01-01
    “…Conclusions were drawn, such as that the Wells rotors show a better behavior in terms of energy produced when operating with a water column, with 7% better efficiency than with air. The Wells turbine with the NACA0021 blade profile performs better at air velocities above 4 m/s.…”
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  13. 633

    Computer Vision-Based Framework for Data Extraction From Heterogeneous Financial Tables: A Comprehensive Approach to Unlocking Financial Insights by Iftakhar Ali Khandokar, Priya Deshpande

    Published 2025-01-01
    “…Therefore, in this work, we proposed an end-to-end architecture to extract information from Financial table images while preserving the column row structures of the attributes within the table. …”
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  14. 634

    A Validated RP-HPLC Method for the Estimation of Quetiapine in Bulk and Pharmaceutical Formulations by D. Suneetha, A. Lakshmana Rao

    Published 2010-01-01
    “…Quetiapine was chromatographed on a reverse phase C18 Waters column (75x4.6 mm I.D., particle size 3.5 μm) in a mobile phase consisting of phosphate buffer (pH 3.0 adjusted with orthophosphoric acid) and acetonitrile in the ratio 40:60 v/v. …”
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    Article
  15. 635

    Simultaneous RP HPLC Determination of Aceclofenac, Paracetamol and Tizanidine in Pharmaceutical Preparations by V. V. Vaidya, G. R. Singh, M. P. Choukekar, M. B. Kekare

    Published 2010-01-01
    “…Chromatographic separation of the three drugs were performed on a hypersil C18 column (250 mm x 4.6 mm, 5 µm) as stationary phase with a mobile phase comprising of mix phosphate buffer pH 7.0: acetonitrile (40:60 v/v), at a flow rate of 0.7 mL min-1 and UV detection at 230 nm. …”
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  16. 636

    Mechanism of Extruding Flowing Floor Heave in Mining Gateways Using an Elastic Foundation Beam Model by Pan Chen, Yuan-Xiang Yu, Shuan-Cheng Gu

    Published 2022-01-01
    “…According to the compression column model, under the action of the peak-bearing pressure, the maximum horizontal tensile strain in the coal wall is located at 0.65 times the height of the roadway. …”
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  17. 637

    Anthraquinones from the Roots of Kniphofia insignis and Evaluation of Their Antimicrobial Activities by Asnakew Amare Tadesse, Negera Abdissa Ayana, Dele Abdissa Keneni

    Published 2021-01-01
    “…Sequential extraction using a cold maceration method and column chromatographic separation of the roots Kniphofia insignis headed to the isolation of three anthraquinones: one monomeric anthraquinone (1) and two dimeric anthraquinones (2 and 3). …”
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  18. 638

    Thermodynamic Insights into the Separation of Carotenoids in Reversed-Phase Liquid Chromatography by Nicola Marchetti, Pier Paolo Giovannini, Martina Catani, Luisa Pasti, Alberto Cavazzini

    Published 2019-01-01
    “…Chromatographic elutions were undertaken under linear, isocratic conditions by using a C18 stationary phase, four different MP compositions (by varying the ratio methanol/acetonitrile from 66.5/28.5 to 47.5/47.5 v/v), and column temperatures in the range 283–313 K. Traditional Van’t Hoff analysis has been used to estimate changes of standard enthalpy (ΔH∘) and Gibbs free energy (ΔG∘) associated with the solute transfer from the mobile to the stationary phase at each mobile phase composition. …”
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    Article
  19. 639

    Performance Evaluation of Monolith Based Immobilized Acetylcholinesterase Flow-Through Reactor for Copper(II) Determination with Spectrophotometric Detection by Parawee Rattanakit, Saisunee Liawruangrath

    Published 2014-01-01
    “…The bioreactor was prepared inside a microcapillary column by in situ polymerization of butyl methacrylate, ethylene dimethacrylate, and 2,2-dimethoxy-1,2-diphynyletane-1-one in the presence of 1-decanol, followed by vinyl azlactone functionalization and AChE immobilization. …”
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  20. 640

    Effect of Mean Grain Size on the Small-Strain Dynamic Properties of Calcareous Sand by Liwei Wen

    Published 2022-01-01
    “…A series of resonant column tests had been performed on calcareous sands with varying median grain diameter and uniform coefficient. …”
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