TRIaD technology

Some novel C60-based assemblies were recently synthesized by [4+2] Diels-Alder cycloaddition reactions. Thus, fused tetrathiafulvalene-C60 dyads and C60-tetra-thiafulvalene-C60 dumbbell triads, in which the fullerene acceptor is doubly tethered to the donor tetrathiafulvalene through a rigidified cyclohexene ring [108], were prepared. With this novel approach, control of the relative orientation as well as the distance between the donor and acceptor units was achieved. Thereby, through-space interactions were expected to dominate because of the special topology of the constructed molecules. More examples of such donor-acceptor hybrid systems are discussed in the appropriate following sections, with their potential use in innovative technological applications. 

Furthermore, they demonstrated that monitoring porphyrin emission with 470 nm excitation could perform either NOT-OR (NOR) or exclusive OR (XOR) logic functions. Of course, the performances of the triad were investigated in liquid solution, which will pose major challenges for the technological application. 

Late in 2002, US EPA, working with an organization called the Brownfields Technology Support Center, decided that the Cos Cob site would be appropriate for application of the Triad approach. In February 2003, a Triad-based field investigation was conducted at the Cos Cob site over the course of one week. In a single mobilization, the field team characterized the site for all constituents of concern effectively (US EPA, Office of Solid Waste and Emergency Response, 2004). 

US EPA, Office of Solid Waste and Emergency Response. (2004). Triad used for targeted brownfields assessment of former Cos Cob Power Plant. Technology News and Trends, EPA 542-N-04—004. 

Improvements in stationary phase design have advanced to a more coherent technology for achieving, at least in practical terms, well defined sorptive effects. Equally important, similar progress has been made toward improved practical understanding of liquid phase compositions needed to achieve chemical selectivity. Preliminary solvent selection has been reduced to the use of solvent triads, one for aqueous and another for non-aqueous systems (14). Thus, aqueous mixtures for reversed phase HPLC, or RPLC, are prepared with methanol, acetonitrile, and/or tetrahydrofuran as... 

N.N. Greenwood and A. Earnshaw (1997) Chemistry of the Elements, 2nd edn, Butterworth-Heinemann, Oxford - A very good account including historical, technological and structural aspects the metals in each triad are treated together. 

Many specialty fibers have been developed over the years for special end- uses. An example of excellent industrial accomplishment is the development of TRIAD fiber shown in Figure 2.19. Used in FRAM automotive air filter, the TRIAD fiber helps trap dirt inside its microscopic channels that in turn trap more dirt without increasing the air flow restriction. Another example is the preparation of a conductive fiber using the bicomponent fiber technology with a built-in conductive fiber. Figure 2.42, Item 29, shows a fiber cross-section where the dark-colored portion of the fiber is the conductive portion. 

Figure 19.1 Cardiac tissue engineering triad. Schematic representation of the interplay between the components of the cardiac tissue engineering triad. Biomaterials are key components for cardiac tissue engineering applications and play a critical role in this technology. MSC, mesenchymal stem cell ADSC, adipose stem cell iPS, induced pluripotent cell CPC, cardiac progenitor cell VEGF, vascular endothelial growth factor FGF, fibroblast growth factor NRG, neuregulin EPO, erythropoietin HGF, hepatocyte growth factor SDF-1, stromal cell—derived factor 1.

Altshuler et al. (1984) s study on the automobile industry elaborates that different prices and environments create different mixes of demand in the US, Europe and Japan which lead to different designs and technological knowledge and skills within the triad. 

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