Category: 6. Chemistry

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  • A universal color curve for roasted arabica coffee

    A universal color curve for roasted arabica coffee

    Effect of roast profiles and green coffee origin on color

    Figure 2 shows representative photos of the ground coffee samples across the seven roast profiles. For all tested roast profiles, the bean color progressively changed from its initial…

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  • Highly selective solid phase extraction of clonazepam from water using a urea modified MOF prior to HPLC analysis

    Highly selective solid phase extraction of clonazepam from water using a urea modified MOF prior to HPLC analysis

  • López-García, E. et al. Drugs of abuse and their metabolites in river sediments: analysis, occurrence in four Spanish river basins and environmental risk assessment. J. Hazard. Mater. 401, 123312 (2021).

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  • Bee pollen as a source of phenolic compounds in potato snacks

    Bee pollen as a source of phenolic compounds in potato snacks

    Chemical composition of bee pollens used in experiment

    The analyzed bee pollens differed in terms of basic chemical composition (Table 1). Bee pollens contained from 6.96 to 13.37% of water, which is more than suggested 6%3,29. ISO standards…

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  • RGO-Pt as an effective catalyst for U(IV) generation under hydrogen

    RGO-Pt as an effective catalyst for U(IV) generation under hydrogen

    Synthesis and characterization

    The improved Hummers method was chosen as a path for the synthesis due to its several advantages over other popular methods like the Hummers’ and modified Hummers’ method. The advantages of the improved…

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  • Structural, surface, and theoretical investigation of hydrophobic-modified nanodiamond powders

    Structural, surface, and theoretical investigation of hydrophobic-modified nanodiamond powders

  • Krueger, A. et al. Deagglomeration and functionalisation of detonation diamond. Phys. Status Solidi 204, 2881–2887 (2007).

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  • Krueger, A. Beyond the shine: recent…

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  • Cancer risk from heavy metal contamination in fish and implications for public health

    Cancer risk from heavy metal contamination in fish and implications for public health

    Description of study area

    The Keta Lagoon, situated in southeastern Ghana, West Africa (0°56′20.63″ E to 1°0′26.66″ E; 5°52′2.02″ N to 5°58′48.77″ N), is a significant brackish waterbody with an estimated surface area of…

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  • A shocking new way to make ammonia, no fossil fuels needed

    A shocking new way to make ammonia, no fossil fuels needed

    University of Sydney researchers have harnessed human-made lightning to develop a more efficient method of generating ammonia – one of the world’s most important chemicals. Ammonia is also the main ingredient of fertilizers that account for…

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  • Thermal tuning of nanocomposites for superior cadmium ion adsorption

    Thermal tuning of nanocomposites for superior cadmium ion adsorption

    Characterization

    The X-ray diffraction (XRD) patterns of the C600 and C800 samples are displayed in Fig. 2, highlighting their crystalline structures. Characteristic peaks were detected at diffraction angles (2Ɵ) of 18.46, 30.53, 35.88, 37.55,…

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  • Quantitative evaluation of thermal runaway in lithium-ion batteries under critical heating conditions to enhance safety

    Quantitative evaluation of thermal runaway in lithium-ion batteries under critical heating conditions to enhance safety

    Model verification

    Figure 3 depicts the comparison between experimental data and numerical simulations for a cathode material of LNCMC type, which is subjected to heating by a polyimide electro-thermal film with a power output of 32.5 W45. A…

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