Zigzag sampling

Samples must be collected representing the entire plot by avoiding sampling along the border areas and following zigzag, X or S patterns. 

SAMPLE SOLUTION (a) Glycine is achiral, and so Gly-Ala has only one chirality center, the a-carbon atom of the L-alanine residue. When the carbon chain is drawn in an extended zigzag fashion and L-alanine is the C terminus, its structure is as shown ... 

From N2 adsorption isotherms, the surface area (Sbet) of the ASS is 680 m2 g 1 and its pore volume is 0.46 cm3 g, which is to be compared with a pore volume of 0.17 cm3 g 1 for the HZSM-5 samples. The average pore diameter of AAS is 50 A, whereas in ZSM-5 there is an intersecting network of straight and zigzag channels (average diameter 5.5 A), the cavities at the intersections being ca. 9 A in diameter. 

In the paper we continue the researches started in [1] where the possibility of existence of T-junctions of (6,6) CNT with graphite monolayer was shown. Here some samples of T-junctions of carbon zigzag and armchair CNTs are investigated. Experimental and theoretical aspects of perspectives of using of CNT T-junctions as elements of future nanoscale electronic devices are considered earlier in [4-10]. 

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