dgat1 inhibitor In various cases the electroforming techniqu

In various cases, the electroforming technique is used in conjunction with rapid prototyping methods to produce both parts and molds in creating dgat1 inhibitor injection (Chan et al., 2003, Hsu et al., 2008, Monzon et al., 2006, Rennieet al., 2001, Yang and Le, 1999). Applying electroforming to architectural work is considered highly innovative because this technique is frequently used to create objects with limited dimensions. The Carapace project represents the first case in which electroforming is used in a large-scale architectural undertaking. The transfer action is not immediate because the material needs to be deposited and thus pass from a few grams to several hundreds of grams. Creating the entire roof as a single piece was impossible. Therefore, the entire surface was divided into 1,500 pieces (Figure 7). After production of the components, they were mounted on the basis of a precise layout, as shown in the figure.
Production procedure
Structural assembly After the thermal treatment, the copper plates were modeled by cuts at the assembly site, as illustrated in Figure 12. Then, the copper plates were placed on a waterproofing sheath (Chapter 3). Each plate was fixed on the upper border with the use of copper belt fasteners covering 3cm. These belt fasteners were connected to the copper plate by rivets and to the wainscot by nails. The upper border of the lower plate was seamed mechanically with the lower border of the upper plate. The junction was locked by hammering. Simple seaming was also performed between the side borders of adjacent plates. Once all of the copper foils and rib cuts were assembled (Figure 13), the surface was polished mechanically. Then, chemical treatment was conducted in accordance with the concept of the artist to produce a uniform surface and highlight the original design.
Weathering of the copper roof The issues encountered during the material selection for the roof were natural weathering and corrosion resistance. The significance of the building necessitated materials that can guarantee good corrosion behavior for a long service life. Under natural weathering, copper presents good behavior because of the formation of a patina made of corrosive products (de la Fuente at al., 2008; FitzGerald et al., 2006; Kraetschmer et al., 2002; Marusic et al., 2009; Mendoza and Corvo, 2000; Wallinder and Leygraf, 2001). However, in the Carapace project, not only technical characteristics, such as corrosion behavior, were important. Aesthetic and perceptive factors had to be considered also. Natural weathering results in oxidation of the copper surface, which is evident in color and gloss changes. During structural design and construction, one issue encountered was whether maintaining the original aspect of the copper plates or allowing natural change to occur was preferable. Under natural exposure, the corrosion rate and chemical composition of the corrosive product are functions of the type and quantity of pollutants in the location (Kraetschmer et al., 2002; Wallinder and Leygraf, 2001). The color can also be changed by environmental factors. A copper patina can form gradually over the years (Kraetschmer et al., 2002). As previously stated, a brownish and weathered effect of copper was obtained after final surface treatment. During the life of a tortoise, the age of the animal is reflected by changes in its appearance. If this animal is considered as a symbol of longevity, then the modifications in its appearance can be regarded as positive. Similarly, the color and overall appearance of the copper carapace roof is expected to change over time, a characteristic that can be considered as positive evolution. After approximately 10 months, the copper surface presented a brownish corrosive product layer, which is typical for a structure located in a rural environment (FitzGerald et al., 2006; Kraetschmer et al., 2002; Mendoza and Corvo, 2000; Wallinder and Leygraf, 2001).
Conclusion