In vitro fabrication of tissues and the regeneration of internal organs are no longer regarded as science fiction but as potential remedies for individuals suffering from chronic degenerative diseases. Tissue engineering has generated much interest from researchers in many fields, including cell and molecular biology, biomedical engineering, transplant medicine, and organic chemistry. Attempts to build tissues or organs in vitro have utilized both scaffold and scaffold-free approaches. Despite considerable progress, fabrication of three-dimensional tissue constructs in vitro remains a challenge. In this chapter, we introduce and discus current concepts of tissue engineering with particular focus on future clinical application.
The recent transnational reach of Japanese television dramas in East and Southeast Asia is unprecedented, and not simply in terms of the range and scale of diffusion, but also of the intense sympathy many young Asians feel toward the characters in Japanese dramas, so that they cope with their own modern lives by emulating the lives on screen. Through the empirical analysis of how Japanese youth dramas are (re)produced, circulated, regulated, and consumed in East and Southeast Asia, each chapter in this volume variously explores the ways in which intra-Asian cultural flows highlight cultural resonance and asymmetry in the region under the decentering processes of globalization. Key questions include: What is the nature of Japanese cultural power and influence in the region and how is it historically overdetermined? How is it similar to and different from "Americanization" and other Asian cultural sub-centers? What kinds of images and sense of intimacy and distance are perceived through the reception of Japanese youth dramas?
In the early twentieth century, historical imaginings of Japan contributed to the Argentine vision of “transpacific modernity." Intellectuals such as Eduardo Wilde and Manuel Domecq García celebrated Japanese customs and traditions as important values that can be integrated into Argentine society. But a new generation of Nikkei or Japanese Argentines is rewriting this conventional narrative in the twenty-first century. Nikkei writers such as Maximiliano Matayoshi and Alejandra Kamiya are challenging the earlier, unapologetic view of Japan based on their own immigrant experiences. Compared to the experience of political persecution against Japanese immigrants in Brazil and Peru, the Japanese in Argentina generally lived under a more agreeable sociopolitical climate. In order to understand the "positive" perception of Japan in Argentine history and literature, Samurai in the Land of the Gaucho turns to the current debate on race in Argentina, particularly as it relates to the discourse of whiteness. One of the central arguments is that Argentina's century-old interest in Japan represents a disguised method of (re)claiming its white, Western identity. Through close readings of diverse genres (travel writing, essay, novel, short story, and film) Samurai in the Land of the Gaucho yields a multi-layered analysis in order to underline the role Japan has played in both defining and defying Argentine modernity from the twentieth century to the present.
This book provides introductory, comprehensive, and concise descriptions of amorphous chalcogenide semiconductors and related materials. It includes comparative portraits of the chalcogenide and related materials including amorphous hydrogenated Si, oxide and halide glasses, and organic polymers. It also describes effects of non-equilibrium disorder, in comparison with those in crystalline semiconductors.
Amorphous semiconductors are subtances in the amorphous solid state that have the properties of a semiconductor and which are either covalent or tetrahedrally bonded amorphous semiconductors or chelcogenide glasses. Developed from both a theoretical and experimental viewpoint Deals with, amongst others, preparation techniques, structural, optical and electronic properties, and light induced phenomena Explores different types of amorphous semiconductors including amorphous silicon, amorphous semiconducting oxides and chalcogenide glasses Applications include solar cells, thin film transistors, sensors, optical memory devices and flat screen devices including televisions
An exciton is an electronic excitation wave consisting of an electron-hole pair which propagates in a nonmetallic solid. Since the pioneering research of Fren kel, Wannier and the Pohl group in the 1930s, a large number of experimental and theoretical studies have been made. Due to these investigations the exciton is now a well-established concept and the electronic structure has been clarified in great detail. The next subjects for investigation are, naturally, dynamical processes of excitons such as excitation, relaxation, annihilation and molecule formation and, in fact, many interesting phenomena have been disclosed by recent works. These excitonic processes have been recognized to be quite important in solid-state physics because they involve a number of basic interactions between excitons and other elementary excitations. It is the aim of this quasi monograph to describe these excitonic processes from both theoretical and experimental points of view. we take a few To discuss and illustrate the excitonic processes in solids, important and well-investigated insulating crystals as playgrounds for excitons on which they play in a manner characteristic of each material. The selection of the materials is made in such a way that they possess some unique properties of excitonic processes and are adequate to cover important interactions in which excitons are involved. In each material, excitonic processes are described in detail from the experimental side in order to show the whole story of excitons in a particular material.
The introduction of GaAs/ AIGaAs double heterostructure lasers has opened the door to a new age in the application of compound semiconductor materials to microwave and optical technologies. A variety and combination of semiconductor materials have been investigated and applied to present commercial uses with these devices operating at wide frequencies and wavelengths. Semiconductor modulators are typical examples of this technical evolutions and hsve been developed for commercial use. Although these have a long history to date, we are not aware of any book that details this evolution. Consequently, we have written a book to provide a comprehensive account of semiconductor modulators with emphasis on historical details and experimantal reports. The objective is to provide an up-to-date understanding of semiconductor modulators. Particular attention has been paid to multiple quantum well (MQW) modulators operating at long wavelengths, taking into account the low losses and dispersion in silica fibers occuring at around 1.3 and 1.55 mm. At the present time, MQW structures have been investigated but these have not been sufficiently developed to provide characteristic features which would be instructive enough for readers. One problem is the almost daily publication of papers on semiconductor modulators. Not only do these papers provide additional data, but they often modify the interpretations of particular concepts. Almost all chapters refer to the large number of published papers that can be consulted for future study.
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