Today there is an emerging tendency – from aesthetical and economical concerns – to create/refurbish venues for a wide variety of performance types, each demanding a specific acoustic. For these multi-purpose halls, electro-acoustic enhancement systems represent the most promising approach, allowing high quality results with the greatest flexibility. This paper reviews the principles of the mai...

The central nervous system of adult mammals has long been considered as a complex static structure unable to undergo any regenerative process to refurbish its dead nodes. This dogma was challenged by Altman in the 1960s and neuron self-renewal has been demonstrated ever since in many species, including humans. Aging, neurodegenerative, and some mental diseases are associated with an exponential...

A simple procedure was developed for preparing a carbon-coated fused-silica capillary for use in sheathless capillary electrophoresis/electrospray mass spectrometry (CE/ESI-MS). The tapered capillary tip was smeared with a marker pen before coating with carbon using a soft pencil. The layer from the ink of the marker pen was critical to the preparation of the carbon-coated capillary. The fabric...

employing remanufactured and refurbished products are among the new strategies that companies used to raise their profits as well as protects environment. although used product equipment gives an opportunity to purchase latest technology, customers are doubtful about quality and reliability of these products. because of limitation that developing countries faces in buying new products, some cou...

Dr Yamila de Armas has occupied an array of posts since finishing her residency in family medicine in her home province of Cienfuegos in 1992. She has served as a family doctor; polyclinic, municipal and provincial health director; medical school dean; and twice vice minister of public health. But few would doubt her toughest job is the one she has now: deputy director of the Havana City Provin...

Most research on perovskite solar cells has focused on improving power-conversion efficiency and stability. However, if one could refurbish perovskite solar cells, their stability might not be a critical issue. From the perspective of cost effectiveness, if failed, perovskite solar cells could be collected and recycled; reuse of their gold electrodes and transparent conducting glasses could red...

The population pressure over municipal administrations has increase in most cities in the world stimulated by citizen’s wishes for better quality of life. People seem to have improved their standards and demands with respect to quality of life when compared to the past. Citizens begin to understand the economic and social benefits of preserving their cultural heritage and, consequently, try to ...

This paper examines the social implications of introducing a new technology into the product-service system (PSS) of electronic waste management (EWM). Using a previously established set of social sustainability key performance indicators (KPIs) targeting the operations level (i.e. impacts on EWM operators), social implications are examined in a case where a specific innovative new technology i...

OBJECTIVES To describe a unique specialized seating delivery model for children with disabilities that focuses on cost containment and environmental preservation. To determine whether this delivery model achieves cost containment. DESIGN A retrospective cost analysis using data from billing records and annual statistical reports of the specialized seating program, for the 2004 to 2009 billing...

Composite materials constitute an appealing choice in many industrial sectors, due to their unique composition and characteristics, such as low maintenance requirements, light weight, corrosion resistance, durability. However, the sustainable management of end-of-life composite remains a challenge. Recovery strategies, design aspects, interconnection are currently largely unexplored, while tech...