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Questo volume offre al lettore la possibilità di uno sguardo nuovo (e forse inaspettato) su Roma e sul suo patrimonio di storia, cultura e sapienza. Rende fruibile, quantomeno parzialmente, la fatale frammentarietà della narrazione di Roma, illustrata con esemplari immagini fotografiche affiancate da brevi didascalie, talora da quegli aneddoti peculiari dell'arguzia del popolo romano che implementano gli stimoli della fantasia … quasi che, di volta in volta, l'affascinante congerie urbana fosse percepita osservandola attraverso il foro della serratura. In questa inafferrabilità dell'intero insiste l'aporia di una metropoli che diviene orizzonte intrascendibile e inabbracciabile del nostro immaginario. Nel quale coltiviamo ancora la speranza che Roma, se non più raggiungibile nella sua sostanza, sia almeno evocabile nell'enigma dei suoi segni riposti. Questo gioco di rimandi e di slittamenti continui del senso è quanto il volume suggerisce, invitando infine il lettore a ricomporne uno suo, più ricco e complesso. This work offers a new (and probably unexpected) vision of Rome, together with its historical and cultural heritage. It renders vivid, at least partially, the fatal fragmentation of Rome's history, illustrated through exemplary photographic images and brief captions, sometimes also by anecdotes typical of the Roman wit that stimulate one's fantasy … as if observing the fascinating extemporaneous urban scene through a key hole. This elusiveness leaves room to the aporia of the metropolis that poses itself as the insurmountable horizon of our imagination. In this horizon we nurture the hope that Rome, even if not comprehensible in its very substance, can at least be evoked in the riddle of its hidden marks. This game of allusions and continuous shifting of meanings finally invites the reader to recreate his own meaning, a richer and more complex one.

This book contains the papers presented at the First International Conference on Environmental Engineering and Renewable Energy held in Ulaanbaatar, Mongolia in September 1998. The main aim of the conference was to give an opportunity to scientists, experts and researchers from different fields to convene and discuss environmental and energy problems and also be informed about the state of the art.Today, environmental protection is increasingly becoming a matter of global priority now that the tendency towards sustainable development is growing. The main concept of sustainable development is to fulfill both the demand of today's generation and cater for the requirements of future generations. Hence, sustainable development requires sound management of those environmental and research and development technologies which have low environmental impact and which promote the use of renewable sources.Renewable energies are the only environmentally benign sources of energy and are available at any site and any time of the year. Moreover, the utilization of renewable sources of energy can contribute to the increasing energy demand and also advance the improvement of life standards in rural areas, where it is difficult to establish a permanent connection with central electricity systems. Application and adoption of emerging renewable energy technologies in rural and remote areas cannot be successful without transfer of knowledge, information and know-how.Environmental engineering involves research and application of technologies to minimize the undesirable impact on the environment. In recent years, there has been a growing interest in environmental engineering problems in order to focus on theoretical and experimental studies on atmospheric pollution, water management and treatment, waste treatment, disposal and management.