نتایج جستجو برای: lii
تعداد نتایج: 880 فیلتر نتایج به سال:
Investigations into the chemical composition of soot particles often rely on samples extracted from the flame environment for subsequent analysis by mass spectrometry. These mass spectra have contributed to the general consensus that polycyclic aromatic hydrocarbons (PAHs) are involved in soot nucleation and surface growth processes. In the pioneering work of Dobbins et al., soot and soot precu...
Abstract In a previous study we demonstrated novel two-phase PIV technique based on the laser-induced incandescence (LII) signal from black submicron tungsten carbide particles (WC), which achieved velocity measurements for both dispersed-form (large water droplet) and continuous-form (gas). Submicron WC are intentionally seeded into flow, heated by light sheet generated double-pulsed laser run...
An efficient and inexpensive LiI-promoted O- to N-alkyl migration of 2-benzyloxy-, 2-allyloxy-, and 2-propargyloxypyridines and heterocycles is reported. The reaction produces the corresponding N-alkyl 2-pyridones and analogues under green, solvent-free conditions in good to excellent yields (30 examples, 20-97% yield). This method has been shown to be intermolecular and requires heat and lithi...
Three kilids of virllslike particles have been found ill variolls c~rgalls dllrillg :LII llltrasirrwtural investigation in Drosophila melanogasler. While one of these particles, nbotlt 40 nm in size, appears identical to similar part.icles already desrribcd. the IIV,VC, ot.hers (one cut’ them intranuclear, about, 50 11m; the ot,her one irltracytc)plnsmic, nbollt ti0 nm) are described for the fi...
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