Mostrando 861 - 880 Resultados de 99,129 Para Buscar '" metal"', tiempo de consulta: 0.46s Limitar resultados
  1. 861
  2. 862
    “…This review aims to describe the latest advances for the synthesis of pyrrolines by transition metal-catalyzed cyclizations. Only reactions in which the pyrroline ring is formed by metal promotion are described. …”
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  3. 863
    “…Metal catalysis has revolutionized synthetic chemistry, leading to entirely new, very efficient transformations, which enable access to complex functionalized molecules. …”
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  4. 864
    “…Streptococcus spp. are an important genus of Gram-positive bacteria, many of which are opportunistic pathogens that are capable of causing invasive disease in a wide range of populations. Metals, especially transition metal ions, are an essential nutrient for all organisms. …”
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  5. 865
  6. 866
    “…Hierarchically porous metals possess intriguing high accessibility of matter molecules and unique continuous metallic frameworks, as well as a high level of exposed active atoms. …”
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  7. 867
  8. 868
    “…Orthopedic metallic prostheses are commonly used in the current practice of orthopedic surgery. …”
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  9. 869
  10. 870
    “…Bacteria, similar to most organisms, have a love–hate relationship with metals: a specific metal may be essential for survival yet toxic in certain forms and concentrations. …”
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  11. 871
    por Mummadi, Suresh, Krempner, Clemens
    Publicado 2023
    “…The development and application of new organoboron reagents as Lewis acids in synthesis and metal-free catalysis have dramatically expanded over the past 20 years. …”
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  12. 872
    “…Metal fume fever (MFF) is an auto-limited acute febrile respiratory syndrome that may mimic an acute viral respiratory disease after exposure to the fumes of metal oxides. …”
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  13. 873
    “…This contribution discusses the use of fibre-coupled ultra-fast Metal-Semiconductor-Metal Photodetectors (MSM-PD) as an alternative, dependablemeans to measure signals derived from electro-optical and synchrotron-light based diagnostics systems. …”
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  14. 874
    “…We present an extended version of this study including 10 crystal structures of metal–organic complexes containing hydrogen atoms bonded to transition-metal atoms for which both X-ray and neutron data are available. …”
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  15. 875
    “…Despite the constrained metal-on-metal design of the implant, which can lead to adverse reactions to metal debris, no elevated systemic metal ion levels were detected. …”
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  16. 876
    “…RESULTS: We investigated effects of different metal and metal(oid) oxide nanoparticles on photosynthesis of oakleaf lettuce seedlings by monitoring the chlorophyll a fluorescence light radiation and reflectance from the leaves. …”
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  17. 877
    “…[Image: see text] The growth of transition-metal dichalcogenides (TMDCs) has been performed so far using most established thin-film growth techniques (e.g., vapor phase transport, chemical vapor deposition, molecular beam epitaxy, etc.). …”
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  18. 878
  19. 879
  20. 880
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