Entity Meshing

From CdCl2, K[Ag(CN)2] (ratio 1 2), and NH3 at pH 10 (citrate buffer), colorless crystals of [Cd(NH3)2 Ag(CN)2 2] (P42/mbc, Z= 4) are formed. Therein, /nmv-Cd(NI I3)2 entities (2/m — C2h) are linked by slightly bent NC—Ag—CN units to form a puckered 2-D network with large, 24-membered meshes. Two of these networks (transformed into each other by the 42 operation, i.e., they are perpendicular) interpenetrate.1 3 Similar corrugated sheets occur in [trans-CA (4-Mepy)2 Ag(CN)2 2] (4-Mepy) (4-Mepy = 4-methylpyridin) (Ibca, Z= 16 all atoms in general positions) but here, they are pairwise interwoven in the same layer. The intercalated 4-Mepy molecules are located in the meshes of this layer.219 From the same reaction medium, [Cd(4-Mepy)4 Ag2(CN)3 ][Ag(CN)2] (C2/m, Z = 2) crystallizes after some days. Here, the Cd(4-Mepy)4 units (2jm — C2h) are linked by almost linear NC—Ag—(C,N)—Ag CN rods to form chains, which in turn are arranged in layers. Inserted between the chains or into the layers are linear [Ag(CN)2] anions.219... 

A crucial part of the system is the action of the controller. In technical control systems, the controller receives an input signal - called Cl in Fig. 6.1 - that represents the value or trace that CO is supposed to follow. This is sometimes also the case in biological systems, and Cl may be multidimensional like CO but in many biological systems some entities appear to be strictly controlled, although the origin of the input or set point is either unknown or it is hidden in a mesh of series of interacting control systems. 

The concept-based identification of biomedical entities is now being offered by most commercial vendors of text mining solutions and by an increasing number of academic tools.31 Biomedical concept search is mainly based on publicly available thesauri such as MeSH or GO (see below). 

One of the bottom-up approaches is manually controlled meshing by use of geometry. The mesh is created on line, wireframe, surface, and solid entities by direct definition of its parameters. Free or mapped mesh generation is applied. 

At the end of the cross-hnking process, the topology of the mesh is composed of the different entities represented in Figure 6 (16,57-59). An elastically active junction is one joined by at least three paths to the gel network (60,61). An active chain is one terminated by an active jimction at both its ends. Rubber-like elasticity is due to elastically active chains and jimctions. Specifically, upon deformation the number of configurations available to a chain decreases and the resulting decrease in entropy gives rise to the retractive force. 

In a 50 mL round-bottomed flask a thorough mixture of aldehyde (1 5 mmol), malononitrile (2, 5 mmol), and the catalyst Mg-Al HT [(Mg/Al = 5 calcined at 500 °C] (0.05 g) was stirred at room temperature under solvent-free conditions till the consumption of aldehyde (as monitored by TLC). After then nitromethane (3, 3 mmol) was added and the reaction mixture was stirred again at room temperature (29 °C) to complete the reaction (TLC). To the resulting mixture chloroform (20 mL) was added to dissolve the organic entities, and the catalyst was filtered off and washed with chloroform (10 mL). The filtrate was concentrated under reduced pressure and the crude product was then subjected to column chromatography on sihca gel (60-120 mesh) using petroleum ether/ethyl acetate (10 9) as eluent to obtain the pure product 4. All the products were characterized from their spectral smdies including FT-IR and HNMR. 

In round 1 evaluation, we are interested in investigating if software tools evaluated are able to support auto surfacing i.e., automatically constructing air-tight, accurate, and high quality surface models from scanned data We look for the level of automation, software stability, and capabilities for editing geometric entities (such as points, meshes, and NURB patches). 

For the block example, a plane that is parallel to the top (or bottom) face of the base block was created first (by simply clicking more than three points on the surface). The plane is offset vertically to ensure a proper intersection between the sketch plane and the polygon mesh. The geometric entities obtained from the intersection are planar spline curves. The Auto Sketch capability of Rapidform can be used to extract a set of regular CAD-like line entities that best fit the spline curves. These standard line entities can be joined and parameterized by manually adding dimensions and constraints for a fully parameterized section profile, as shown in Fig. 18a. 

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