Secondary branch

Distillation to small volume of a small sample of a 4-year-old mixture of the alcohol with 0.5% of the ketone led to a violent explosion, and the presence of peroxides was subsequently confirmed [1]. Pure alcohols which can form stable radicals (secondary branched structures) may slowly peroxidise to a limited extent under normal storage conditions (isopropanol to 0.0015 M in brown bottle, subdued light during 6 months to 0.0009 M in dark during 5 years) [2], The presence of ketones markedly increases the possibility of peroxidation by sensitising photochemical oxidation of the alcohol. Acetone (produced during autoxidation of isopropanol) is not a good sensitiser, but the presence of even traces of 2-butanone in isopropanol would be expected to accelerate markedly peroxidation of the latter. Treatment of any mixture or old sample of a secondary alcohol with tin(II) chloride and then lime before distillation is recommended [3], The product of photosensitised oxidation is 2-hydroperoxy-2-propanol [4]. 

The cultures were obtained and maintained in the same conditions described above and observed with the same procedure at the same time intervals. The different morphogenetic effects induced by active fractions are evaluated by the following parameters (i) number of cells in the main filament, (ii) kind of filaments (caulonema, chloronema, rhizonema) (Figure 2), (iii) order of secondary branches, (iv) number of cells without ramification from the apex, (v) number of cells in the I and II order filaments (Table 1). Significance of differences is evaluated by Anova or Student s t test as appropriate. 

The values of KTS in Tables A5.13 and A5.14 vary significantly with structure but they do so in a manner that strongly parallels Kx for the PI CD complexation. In fact, for both a-CD and /3-CD, and three series of Pis, there are good correlations between p/fxs and pA) (Table 6) the data for a-and /3-CD and alcohols are shown in Fig. 7. The two correlations for alcohols are particularly noteworthy since each includes various structural types (linear, secondary, branched, cyclic, etc.). Thus, the abilities of Pis to bind (and stabilize) the transition state of the reaction of pNPA with CDs is firmly related to their abilities to bind in the CD cavities. 

Figure 17.16 Epinastic potato leaves on secondary branches that developed in an atmosphere containing about 40 ppb ethylene (source Wheeler et al., 2004).

Panicle A compound inflorescence, in which the secondary branches are themselves racemose on a raceme. 

The Chiba branch (116 km in length) is a continuation of the Danube River and the major branch of the delta. It forms two internal and one external or marine (Chiba) deltas. The majority of side secondary branches of the internal deltas have died out. The main branches in the Chiba delta are the Ochakovskiy (left) and Starostambul skiy (right). 

Another interesting variation in the clustering of apical dendrites occurs in the cat sensorimotor cortex. There it has been shown by Fleischhauer (1974) that in the posterior sigmoid gyrus the apical dendrites of the layer 5 pyramidal cells frequently bifurcate soon after they emerge from the large cell bodies. The secondary dendritic branches then run obliquely for a short distance and at the level of layer 3 they join secondary branches from other apical dendrites to form dendritic clusters... 

Higher alcohols in the range of C6 to C18 have many industrial applications. Commercial interest includes the whole group of primary and secondary, branched and unbranched, and even- and odd-numbered alcohols. Higher tertiary alcohols are not industrially significant [109]. The C6 to Cn alcohols are called plasticizer alcohols and the C,2 to Cj8 are called surface-active or detergent alcohols because of their respective major end use [109]. Alcohols > C8 are often called fatty alcohols because that was their first original primary source. The world production capacity is currently 3 million ton/yr, of which 88% are synthetic [108,109],... 

Brief description This species of plume-like seafans differs in having more spaced branching off the main trunks, and the branches are stiff, not floppy. Both the primary and secondary branches all have branchlets emerging off their sides. These branchlets emerge mostly in matched pairs, on opposite sides of the stems. This species has a more open and sea fan appearance than other species of this genus. The color is usually violet, occasionally yellow or whitish spicules clear violet, colorless, or pale yellow anthocodial rods colorless. 

Prephenlc Acid, l-Carboxy.4-hydroxy-< -oxo-2.5-cyclohexadiene-1-propanoic acid l-carboxy-4-hydraxy-2,S-cyclohexadiene-l-pyruvic acid, C,0H1 Ot mol wt 226.18. C 53.10%, H 4.46%, O 42.44%. Non-aromatic biosynthetic in -termediate that represents a secondary branch-point in the pathway from chorismic acid to phenylalanine and tyrosine, q.q.y., in many organisms. Isoln from cultures of mutant Escherichia coti B. D. Davis, Science 118, 251 (1953). 

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