Showing 6,781 - 6,800 results of 7,816 for search '"column"', query time: 0.06s Refine Results
  1. 6781
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  6. 6786

    Nutrients Release from a Novel Gel-Based Slow/Controlled Release Fertilizer by H. Ding, Y. S. Zhang, W. H. Li, X. Z. Zheng, M. K. Wang, L. N. Tang, D. L. Chen

    Published 2016-01-01
    “…Its nutrient release characteristics were studied to compare with conventional fertilizers through the soil column leaching method. The influences of soil factors, including temperature, pH, water, and nutrient contents in the G-CRF on nutrient release, were also investigated through soil-water incubation method. …”
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  7. 6787

    Determination of hexachlorocyclopentadiene in water by HS-SPME-GC-MS by YOU Xihua, SHI Jinghua, WANG Weili, CAO Fangfang, ZHANG Fengju, QIN Chenghua

    Published 2025-01-01
    “…A headspace solid-phase microextraction gas chromatography-mass spectrometry(HS-SPME-GC-MS) method was established for the determination of hexachlorocyclopentadiene in water, with using headspace solid-phase microextraction injection, DB-1 chromatographic column separation, and gas chromatography/mass spectrometry detector detection. …”
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  8. 6788

    Seasonal Changes and Spatial Variation in Water Quality of a Large Young Tropical Reservoir and Its Downstream River by Teck-Yee Ling, Norliza Gerunsin, Chen-Lin Soo, Lee Nyanti, Siong-Fong Sim, Jongkar Grinang

    Published 2017-01-01
    “…The results show that seasons impacted the water quality of the Bakun Reservoir, particularly in the deeper water column. Significantly lower turbidity, SRP, and TP were found during the wet season. …”
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  9. 6789

    Use of Anionic Surfactant-Modified Activated Carbon for Efficient Adsorptive Removal of Crystal Violet Dye by Rumi Goswami, Amit Kumar Dey

    Published 2022-01-01
    “…Activation energy of 48.31 kJ/mol suggested chemisorption process of the system. Column studies were carried out by using different models to study the variation of bed depth, dye concentration, flow rate, etc. …”
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  10. 6790

    Liquid Chromatographic–Mass Spectrometric Determination of Ezetimibe in Human Plasma With Validation Approach by Ahmed A. Alobaida

    Published 2024-12-01
    “…Results: Reconstituted samples were then chromatographed using 80:20, v/v combination of acetonitrile and ammonium acetate 5 mM as the mobile phase at a flow rate of 0.5 mL/min on a reversed-phase column (C18, 25 mm × 4.6 mm, 5 µm from Waters). For both free and total EZ, standardization curves for the concentration range were linear (r2 > 0.99) through a range of 0.1–15.0 and 1.0–150.0 ng/mL, respectively. …”
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  11. 6791
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  14. 6794

    Research on the Reasonable Coal Pillar Width and Surrounding Rock Supporting Optimization of Gob-Side Entry under Inclined Seam Condition by Li-li Jiang, Zeng-qiang Yang, Gang-wei Li

    Published 2021-01-01
    “…The results show that the influence range of inside stress field is about 12.2∼12.8 m based on theoretical calculation result; under the influence of 10 m coal column, the overall deformation of the roadway is relatively small and within the reasonable range of engineering construction, so the width of the coal pillar along the return air roadway is set to 10 m which is more reasonable; the cross-section characteristics of special-shaped roadway lead to asymmetric stress distribution and fragmentation of surrounding rock, and then the asymmetric surrounding rock control technology under the coupling effect of roof prestressed anchor + high-strength single anchor cable + truss anchor cable support is proposed. …”
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  15. 6795
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  19. 6799

    Stability-indicating HPLC-PDA assay for simultaneous determination of paracetamol, thiamine and pyridoxal phosphate in tablet formulations by Ali Amir, Athar Muhammad Makshoof, Ahmed Mahmood, Nadeem Kashif, Murtaza Ghulam, Farooq Umar, Salman Muhammad

    Published 2019-06-01
    “…Separation of analytes was carried out with an Agilent Poroshell C18 column. A mixture of ammonium phosphate buffer (pH = 3.0), acetonitrile and methanol in the ratio of 86:7:7 (V/V/V) was used as the mobile phase pumped at a flow rate of 1.8 mL min−1. …”
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  20. 6800

    Simultaneous Determination of Amphenicols and Metabolites in Animal-Derived Foods Using Ultrahigh-Performance Liquid Chromatography-Tandem Mass Spectrometry by Xinyi Wu, Xixi Shen, Xiangyue Cao, Rongrong Nie, Haonan Zhang, Changbo Tang, Wei Wang

    Published 2021-01-01
    “…We extracted crude samples with ethyl acetate and ammonia water (98:2, v/v), purified the samples with a CNW Si SPE column, defatted the samples with acetonitrile-saturated n-hexane, and then determined the resulting analytes by UHPLC-MS/MS. …”
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