Numbering bridges, branches

Number the vertices in a graph as follows assign smaller numbers to terminal vertices, intermediate numbers to bridges, and the largest numbers to branched vertices. 

PAMAM dendrimers are synthesized in a multistep process. Starting from a multifunctional amine (for example ammonia, ethylenediamine, or tris(2-amino-ethyl)amine) repeated Michael addition of methylacrylate and reaction of the product with ethylenediamine leads to dendrimers of different generation numbers [1,9]. Two methylacrylate monomers are added to each bifunctional ethylenediamine generating a branch at each cycle. Unreacted ethylenediamine has to be completely removed at each step to prevent the initiation of additional dendrimers of lower generation number. Excess methylacrylate has also to be removed. Bridging between two branches of the same or of two different dendrimers by ethylenediamine can also be a problem, and has to be avoided by choosing appropriate reaction conditions. 

Leaving Ca Trau, I crossed the campo and entered the calk that leads to the back door of Ca Barbolano. After one house length it branches. The main branch continues with a single, minor jog, leading to the bridge over the Rio San Remo and the accompanying watersteps the entrance to Number 96 is there, easily accessible from both land and water and well illuminated to attract customers. 

As before the subbands right and left from were interpreted as (vt + v ) combination bands and the fine structure as a series of hot bands of the (v, + n vp — n"vp) type. The hot bands are parallel bands with strong P and R branches and very weak Q branches. Since the H-bond shortens in the v = 1 state of vlt B > B" and the band heads are in the P branch. Many close-lying rotational lines accumulate around the band head so that what we observe is essentially a series of P branches each one belonging to a hot band. The latter form a sequence in the vibrational quantum number of the bridge bending vibration vp. 

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