In many cases, particularly involving films of the 1930s and earlier, first-generation material no longer exists (the negatives of "King Kong" and "Citizen Kane," for example, were both lost in a fire), and the movies survive only in copies many generations removed from the original.
The company's choice of a second-generation material is YBCO (yttrium barium copper oxide).
Over the past 10 years, an extensive body of knowledge has emerged on different types of highly crosslinked UHMWPE materials that explores first- and second-generation materials in greater detail.
In all cases the first generation HTS material BSCCO is used embedded in a low conductivity matrix of AgAu.
This strategy is based on an evolutionary approach, which uses fundamental knowledge on catalysts operation for supporting design of a first generation of catalytic materials to start with.
Over the past decade, several modifications have been introduced in HXLPE to improve the oxidative and/or fatigue properties of the first generation of these materials.
The incorporation of organic moieties in the silica matrix, which was achieved in XTerra-C18, the first generation of hybrid methyl/silica material, reduces the silanols activity and is more successful in reducing this peak tailing.
In short, in an area with a lot of first generation ethanol plants, lignocellulosic material such as wheat straw or corn stover may become very cheap and easily available.
Therefore, a novel sensor using additional resonances over a wide frequency band was designed and used to investigate inherent limitations of first generation sensor systems and material-related limits.
First generation products containing engineered nanoscale materials are already appearing in the marketplace, while more sophisticated products are being developed in laboratories around the world.
In this review, we adopted the classification of rigid intramedullary nails based on the generation of the design and material technology [29]: First generation: intramedullary nail with a cloverleaf design that resulted from pioneering work by Gerhard Küntscher [30], and was manufactured from stainless steel.
