Snake composition

Lancaster described this item in detail, but a supplementary account is given here. 

Weigh out 1000 g of pitch and place it in a thick aluminium bowl. 

Take the mixture out of the bowl, spread it on an aluminium plate and leave it to cool naturally. 

Pulverization. The nitrated pitch becomes brittle on cooling. Crush it with a wooden mallet and pulverize it in a ball mill. 

Composition. The well dried nitrated pitch powder is mixed with an oxidizer which is necessary for burning. An example is shown as follows  

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B) includes noise compositions which are quite sensitive and snake compositions which exhibit curious phenomena, etc. It can be seen from the diagram that toy firework compositions, (A+B), are more numerous than those for ordinary fireworks (A). The reason is that, in the case of toy fireworks it is possible to increase the safety of the compositions to a high degree by complete division and isolation. Following this principle even some sensitive compositions which are never used for shells, exhibition fireworks etc. can be used for toy fireworks. For example, a composition which contains potassium chlorate and red phosphorus is used for pistol caps or another compositon which contains potassium chlorate and realgar is used for cracker balls. These compositions are generally used only for toy fireworks. 

The process for preparing the enzyme composition comprises treating an aqueous solution of the snake venom at a pH of about 4 to 6 with phenol or a phenol derivative in order to precipitate an insoluble complex containing the active venom fraction and decomposing the complex in order to release the thrombinlike enzyme composition. 

Snake venom composition can reflect diet. The Southeast Asian pitviper, Calloselasma rhodostoma (Viperidae), preys on different animals in different... 

SNAKE A small tube filled with explosive composition or an integral container of explosive composition that is hred en mass from mines or shells to hy in a random manner before bursting. 

The phosphoric acid esters of diacyl glycerides, phospholipids, are important constituents of cellular membranes. Lecithins (phosphatidyl cholines) from egg white or soybeans are often added to foods as emulsifying agents or to modify flow characteristics and viscosity. Phospholipids have very low vapor pressures and decompose at elevated temperatures. The strategy for analysis involves preliminary isolation of the class, for example by TLC, followed by enzymatic hydrolysis, derivatization of the hydrolysis products, and then GC of the volatile derivatives. A number of phospholipases are known which are highly specific for particular positions on phospholipids. Phospholipase A2, usually isolated from snake venom, selectively hydrolyzes the 2-acyl ester linkage. The positions of attack for phospholipases A, C, and D are summarized on Figure 9.7 (24). Appropriate use of phospholipases followed by GC can thus be used to determine the composition of phospholipids. 

L-Amino acid oxidase undergoes two types of reversible inactivation one obtained by raising the pH from 5.5 to 7.5 and the temperature from 25 to 38 °C, while the second one is caused by storage at -5 to -60 °C and depends on the pH (it is favored by acidic pH values) and on the ionic composition of the storage buffer. In both cases reactivation is achieved by incubating the enzyme at pH 5 and 38 °C for Ih. Snake venom L-amino acid oxidases should be maintained in the dark at 4°C and near neutral pH to avoid inactivation. 

According to Weingart and Lancaster it is important to obtain a good pitch as the raw material e.g. the residue from the distillation of p-naphthol, but the author does not find it easy to get this material at present. In Japan ordinary coal pitch is used but it has a defect for it produces much soot and smoke. There is another kind of snake named Pharaoh s Serpent. The composition contains a mercury compound and may be poisonous. 

Indeed, it was shown in Fig. 4.9 and pointed out in Part 4, Chapter 3, that within the suborder of snakes (which was taken into consideration because it comprises the largest number of analyzed subfamilies or genera see Tables 4A and 4B), the range of asymmetry of CsCl profiles is much wider than those of entire classes of vertebrates, fishes/amphibians or mammals/birds. The lack of similarity in asymmetry (and compositional patterns) in the snakes is a strong indication that compositional patterns developed independently in small taxons (subfamilies, genera). Our suggestion is that this independent development took place under the effect of different body temperatures. Several observations lend support to this explanation 1) different small taxa of reptiles are charaeterized by different body... 

Next to the lack of the high compositional heterogeneity and lack of CpG islands, other general features distinguish reptilian genomes from those of warm-blooded vertebrates (see Table 12.3). Indeed, T bands are absent in chromosomes from turtles, lizards and snakes (M. Schmid, personal comm.), and karyotypic change and species formation are much slower in this vertebrate class (as they also are in fishes and amphibians) compared to warm-blooded vertebrates (Bush et al., 1977 see also Bernard , 1993b). 

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