Mostrando 1,721 - 1,740 Resultados de 2,278 Para Buscar '"chemist"', tiempo de consulta: 0.22s Limitar resultados
  1. 1721
    “…The accuracy, precision, and stability met with the acceptance criteria of the AOAC (Association of Official Analytical Chemists) International. According to these results, the described HPLC-MS/MS method is adequately sensitive, repeatable and suitable for the large-scale analysis of compounds in biological fluids.…”
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  2. 1722
    “…Hydroacylation reactions and aza-benzoin reactions have attracted considerable attention from experimental chemists. Recently, Wang et al. reported an interesting reaction of N-heterocyclic carbene (NHC)-catalyzed addition of aldehyde to enamide, in which both hydroacylation and aza-benzoin reactions may be involved. …”
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  3. 1723
    por Fürstner, Alois
    Publicado 2016
    “…The challenges are significant, not least at the analytical frontier; their mastery mandates a mindset that differs from the routines that most organic chemists interested in (noble metal) catalysis tend to cultivate. …”
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  4. 1724
    “…Unveiling the determinants for transferase and hydrolase activity in glycoside hydrolases would allow using their vast diversity for creating novel transglycosylases, thereby unlocking an extensive toolbox for carbohydrate chemists. Three different amino acid substitutions at position 220 of a GH1 β-glucosidase from Thermotoga neapolitana caused an increase of the ratio of transglycosylation to hydrolysis (r (s)/r (h)) from 0.33 to 1.45–2.71. …”
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  5. 1725
    por Gürsoy, Oya, Smieško, Martin
    Publicado 2017
    “…In order to enable computational chemists and modelers to efficiently use available software tools, we have additionally performed several focused analyses on ligands, grouped according to descriptors most relevant for the rational drug design. …”
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  6. 1726
    por Lichtman, Marshall A.
    Publicado 2017
    “…Alfred Nobel was one of the most successful chemists, inventors, entrepreneurs, and businessmen of the late nineteenth century. …”
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  7. 1727
    “…Since its discovery in the 1920s, physicists and chemists have used Raman scattering to investigate the chemical composition of a vast range of both liquid and solid materials. …”
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  8. 1728
    “…The PAMBD and its future iterations will provide a valuable resource to biologists, natural product chemists and clinicians in identifying active compounds, potential biomarkers and clinical diagnostics.…”
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  9. 1729
    “…However, the high cost of noble metals and poor recycling performance provides an opportunity for chemists to look for alternate options. Herein, we present the use of Lanthanum hydroxide as support for loading ultra-low amount of Pd for hydrogenation and cross-coupling reactions. …”
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  10. 1730
    “…This work provides an important step toward developing both a fundamental conceptual picture and a practical experimental handle with which synthetic chemists, spectroscopists, and theoreticians may collaborate to engineer cheap and efficient photocatalytic materials capable of performing coulombically demanding chemical transformations.…”
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  11. 1731
    por Feng, Fan, Lai, Luhua, Pei, Jianfeng
    Publicado 2018
    “…Up to now, however, these methods still cannot replace experienced human organic chemists due to their relatively low accuracies. Future new algorithms with the aid of powerful computational hardware will make this topic promising and with good prospects.…”
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  12. 1732
    “…ProTox-II provides a freely available webserver for in silico toxicity prediction for toxicologists, regulatory agencies, computational and medicinal chemists, and all users without login at http://tox.charite.de/protox_II. …”
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  13. 1733
    por Rowe, Walter
    Publicado 2001
    “…Gross’s manual for examining magistrates suggests ways in which the expertise of chemists, biologists, geologists, and other natural scientists could contribute to investigations. …”
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  14. 1734
    “…The test flours were analyzed using the Association of the Official Analytical Chemists (AOAC) methods to determine their nutrient composition before preparation of the porridges. …”
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  15. 1735
    “…We hope this review not only provides a comprehensive summary of aptamer selection and aptasensor development for marine biotoxins, but also arouses a broad readership amongst academic researchers and industrial chemists.…”
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  16. 1736
    “…Modified Association of Official Analytical Chemists (AOAC) proximate and mineral analyses were carried out on the insect’s third instar larvae, pupal, and adult stages to determine the nutritional composition. …”
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  17. 1737
    “…Moreover, exogenous AR agonists, antagonists, or allosteric modulators can be applied for therapeutic benefit, and medicinal chemists working toward that goal have reported thousands of such agents. …”
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  18. 1738
    “…The DFT is the most accurate way in which chemists may address the behavior of the molecular world through large models mimicking chemical complexity. …”
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  19. 1739
    “…Development of new calcium chelators with two-photon absorption (TPA) properties is a state-of-the-art challenge for chemists. In this study, we report the first and efficient synthesis of 5-bromo-2-nitrobenzyl-substituted ethylene glycol tetraacetic acid (EGTA) as a platform for a new generation of calcium chelators with TPA properties in the near-infrared region. …”
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  20. 1740
    “…However, due to its extensive bioactivities, some scientists hold a skeptical point of view toward curcumin and described curcumin as a “deceiver” to chemists. The objective of this study was to explore curcumin's another possibility as a potential supplementary leading compound to cancer treatments. …”
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