Mostrando 901 - 920 Resultados de 1,902 Para Buscar '"sulphur"', tiempo de consulta: 0.46s Limitar resultados
  1. 901
    “…This is due to the electronegativity of sulphur atom in the side chain of thiolate group. …”
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  2. 902
    “…Collective protein modes are expected to be important for facilitating energy transfer in the Fenna-Matthews-Olson (FMO) complex of photosynthetic green sulphur bacteria, however to date little work has focussed on the microscopic details of these vibrations. …”
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  3. 903
    “…Various factors, such as the mevalonate (MVA) and sulphur‐transfer pathways, play pivotal roles in the regulation of ferroptosis. …”
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  4. 904
    “…We show for isomeric dialkynes that the reaction cascade induced by Pt(II) includes ring annulation, sulphur reduction, and ring enlargement. One isomeric dialkyne additionally allows for the isolation of a pentacyclic compound lacking the ring enlargement step, which we have proposed as a potential intermediate in the catalytic cycle.…”
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  5. 905
    “…Future increases in shipping may lead to short-term (long-term) warming (cooling) due to reduced sulphur (CO(2)) emissions, and be detrimental to regional air quality (ozone). …”
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  6. 906
  7. 907
    “…PNCL reacts with ONOO(–)via an isatin moiety through an oxidative decarbonylation reaction to initiate light emission that can be observed instantly with high selectivity against other reactive sulphur, oxygen, and nitrogen species. Detailed studies were performed to study the reaction between isatin and ONOO(–), which confirm selectivity for ONOO(–) over NO(2)˙. …”
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  8. 908
  9. 909
    “…In Germany, a decrease in sulphur emissions over the past 15 years resulted in a reduced exceedance of critical loads for acid deposition. …”
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  10. 910
    “…Sulphur mustard (SM) is a powerful blister-causing alkylating chemical warfare agent used by Iraqi forces against Iran. …”
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  11. 911
    “…In order to develop enhancers of the antibacterial activity, we carried out a medicinal chemistry campaign aiming to develop inhibitors of enzymes that synthesise cysteine and belong to the reductive sulphur assimilation pathway, absent in mammals. Previous studies have provided a novel series of inhibitors for O-acetylsulfhydrylase – a key enzyme involved in cysteine biosynthesis. …”
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  12. 912
    “…Condensation, especially at the 5-position, was detected in this sulphur-free technical lignin, which had been enriched with carbon compared to the milled wood lignin (MWL) sample of the same wood chips. …”
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  13. 913
    “…In oilseed rape (Brassica napus L.), sulphur (S) limitation leads to a reduction of seed yield and nutritional quality, but also to a reduction of seed viability and vigour. …”
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  14. 914
    “…Polycaprolactone (PCL) and polydimethylsiloxane (PDMS) surfaces were treated with tetrafluoromethane (CF(4)), sulphur hexafluoride (SF(6)), and oxygen (O(2)) plasma, and the effects on the surface wettability, roughness, and chemical composition were investigated. …”
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  15. 915
    “…BACKGROUND: This study explored the role of outdoor air pollution [nitrogen dioxide (NO(2)) and sulphur dioxide (SO(2))] and indoor air quality (measured with damp or condensation and secondhand smoke exposures) at age 9 months in emotional, conduct and hyperactivity problems at age 3 years. …”
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  16. 916
    “…Partial functional impairment of the genes involved in the maturation of iron‐sulphur (Fe‐S) proteins was investigated employing the model and the in silico analysis revealed extensive rewiring of the fluxes in response to this functional impairment, despite its marginal phenotypic effect. …”
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  17. 917
    “…Alcohols, aldehydes, alkanes, carboxylic acids, ketones, lactones, sulphur compounds, nitrogen compounds, and terpenes were all present, but the differences between the methods were most apparent for lactones. …”
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  18. 918
    “…NO(3)(−)/NO(2)(−)/SO(4)(2−) addition enhanced Se(IV) uptake in both bacteria, but Se(IV) uptake sustained also under sulphur and nitrogen starvation. Our findings suggest two different transport mechanisms for Se(IV) uptake in these Pseudomonas sp. strains; a low affinity transport system up-regulated by NO(3)(−)/NO(2)(−)/SO(4)(2−) and a distinct Se(IV)O(3)(2−) regulated transport system. …”
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  19. 919
    “…This is the first report describing an analytical method for quantitative analysis of two naturally occurring sulphur compounds, S-methyl-l-cysteine (SMC) and S-methyl-l-cysteine sulfoxide (SMCSO), in human body fluids using isotope-labelled internal standards and liquid chromatography-mass spectrometry (LC-MS)/MS techniques. …”
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  20. 920
    “…Asparagus has excellent nutritional properties and its flavour/fragrance is attributed to a set of volatile components including pyrazines and sulphur-containing compounds. More detailed research, however, is needed and we propose that (untargeted) metabolomics should have a more prominent role to play in these investigations.…”
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