String of pearls

Other morphologies have also been made and observed for SiNW. Although straight nanowires dominate, other forms such as string beans (strings of pearls), shells. 

In cells that are carrying out intensive protein synthesis, ribosomes are often found in a linear arrangement like a string of pearls these are known as polysomes. This arrangement arises because several ribosomes are translat-... 

These siliceous residues have a clearly marked central cavity which causes them to resemble a string of pearls they are rendered especially clear under the microscope by treating the ash on a slide with a drop of dilute hydrochloric acid or by macerating it in chromic acid. Being entirely lignified, these fibres are coloured yellow by the iodine-sulphuric acid reagent. 

Sulfur mustard Vesicles will have a string of pearls appearance and will fhen coalesce. A hoarse voice or barking cough is typically present or aphonia if fhe vicfim is exposed fo a high concenfrafion. 

These formulations are applicable only to normal systems in which diffusing molecules can pass each other in the channels. When molecules cannot pass we have single file or string of pearls diffusion which has entirely different features. This topic has been well reviewed by K rger [9] and will not be considered here. 

Figure 2. This figure shows how alkane would be converted to a Hamiltonian used in this model (a — b), and then how this periodic Hamiltonian could be further reduced (b c) to result in the "string of pearls" H below it. The new energies and couplings in this chain have the effects of the side groups renorrml-...

Figure 3. A path breakdown of the effective C-C coupling in the string of pearls renormalized from alkane (see the terms in equation 10).

The isothiocyanate of the monoanilino porphyrin (Scheme 6.8.1) binds covalently in the form of single molecules to gold(lll). The porphyrin molecules lie flat on the surface. STM revealed preferential localizations on this surface leading to an appearence of string of pearls. The isothiocyanate bond to gold is heat and oxidation resistant (Tao et al., 1995). 

Erythema is evident within 15 to 30 minutes after exposure to liquid Lewisite, and blisters start within several hours these times are somewhat longer after vapor exposure. Lewisite is absorbed by the skin within 3 to 5 minutes (compared with 20-30 min for an equal amount of mustard) and spreads over a wider area than the same amount of mustard. The Lewisite blister begins as a small blister in the center of the erythematous area and expands to include the entire inflamed area, whereas vesication from mustard begins as a string of pearls at the periphery of the lesion, small blisters that eventually merge.58 Other differences between the lesions produced by these two chemical agents are... 

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