Category: 6. Chemistry

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  • Quantum physical analysis of caffeine and nicotine in CCL4 and DMSO solvent using density functional theory

    Quantum physical analysis of caffeine and nicotine in CCL4 and DMSO solvent using density functional theory

  • Lee, H. J., Kim, G. & Kwon, Y. K. Molecular adsorption study of nicotine and caffeine on single-walled carbon nanotubes from first principles. Chem. Phys. Lett. 580, 57–61 (2013).

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  • Fluorescent caves could explain how life persists in extraterrestrial environments

    Fluorescent caves could explain how life persists in extraterrestrial environments

    Deep below Earth’s surface, rock and mineral formations lay hidden with a secret brilliance. Under a black light, the chemicals fossilized within shine in brilliant hues of pink, blue and green. Scientists are using these fluorescent features to…

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  • Paneth’s mirrors and the isolation of methyl radicals | Opinion

    Paneth’s mirrors and the isolation of methyl radicals | Opinion

    For chemists, the word radical has changed in strange ways. Derived from the Latin radix, root, the word referred originally to stable groupings of atoms that stayed together during chemical reactions. The R groups of today are direct…

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  • How a herbicide illustrates the many ways chemicals are put to the test | News

    How a herbicide illustrates the many ways chemicals are put to the test | News

    Assessing the risks posed by chemicals is a difficult and imperfect business that reaches well beyond the scientific realm. There are many factors involved in balancing cost and benefit of such decisions that include science, governments,…

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  • Getting into the weeds of the glyphosate debate | Opinion

    Getting into the weeds of the glyphosate debate | Opinion

    The herbicide glyphosate has polarised opinions for decades. And there are enough different ways to weigh the various evidence around its safety that make reaching any kind of unambiguous consensus hugely challenging. Those seeking to…

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  • Simple trick lets pure blue quantum dots maintain their performance without cadmium | Research

    Simple trick lets pure blue quantum dots maintain their performance without cadmium | Research

    A simple structural tweak has dramatically enhanced the colour clarity and stability of heavy metal-free blue quantum dots. By incorporating sulfur into the eco-friendly zinc–selenium–tellurium nanocrystal lattice, researchers in China…

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  • Research and application of high gas coal seam air leakage control technology based on polymer material cross-linking mechanism

    Research and application of high gas coal seam air leakage control technology based on polymer material cross-linking mechanism

    Effect of different material rations on film thickness and thickness attenuation ration

    The results of orthogonal test of the corner wall rapid film-forming plugging material are shown in Table 3. In this orthogonal test, a total of 4 factors…

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  • Effect of different drying methods on bioactive potential and nutrients of medlar fruit

    Drying period

    The initial moisture content of medlars was reduced from 74.07 ± 0.04% to 11.75 ± 0.07%. Table 2 shows the drying times for the different drying methods. Shade drying had the longest drying time (22,500 min). The shortest…

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  • Dual acid-base catalysis with biologically modified graphene oxide: a sustainable route to polyhydroquinolines with antimicrobial properties

    Dual acid-base catalysis with biologically modified graphene oxide: a sustainable route to polyhydroquinolines with antimicrobial properties

    Materials and methods

    All the solvents, reagents, and chemical powders used in this work were purchased from Merck Chemical Co. (Germany) and Aldrich and used without purification. Scanning electron micrograph (SEM) was provided on a VEGA-TESCAN….

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