The Influence of Hydrogen Concentration in an Ar–H2 Mixture on the Electrical Properties of Solid Oxide Fuel Cells

Powder Metallurgy and Metal Ceramics - Fuel cells are today among the most efficient and environmentally friendly devices for the production of electricity. They are developing rapidly and are...     

Effect of dietary and synthetic chelating agents on the intestinal absorption of lead

The effect of a number of dietary and synthetic chelating agents on the intestinal absorption of lead has been examined using the everted sac preparation and the tracer isotope ²⁰³Pb. All the agents examined increased lead transport into the serosal compartment. An explanation of the way in which these agents modify the model to describe lead transport is proposed.     

The use of site surveys in the collection of recreation data,with particular Reference to the congleton district of Cheshire

The provision of countryside recreation facilities at a local level is likely to receive increasing attention during the next decade. As an integral part of the assessment of the quality of present provision within the Congleton District of Cheshire (U.K.) five site surveys were made. Each site provides different facilities for recreation and interview questions were designed to investigate the background of the visitors and the nature of the interplay between site and visitor. The analysis of answers attempts to illustrate those aspects of this interrelationship, which may be important during the consideration of future provision of recreation sites and their management.     

Reducing the use of resources in medium-sized Swedish construction enterprises: production managers’ views

What construction firms do—and do not do—to reduce the use of resources in construction projects is explored by adopting production managers’ views of their firms’ onsite activities. A literature review and empirical data are combined; 15 production managers have been asked how they perceived their company’s compliance with 31 recommendations to reduce the use of resources. The managers perceived their firms to primarily focus on identifying their customers’ real needs, stimulating employees to undertake further education, and striving for long-term customer–supplier relationships. In contrast, they perceived that less attention was directed to making use of all of the week’s hours, to supporting their main suppliers in their development, and planning feedback and training after project completion. The use of resources is examined by focusing on the perceived low priority given to gathering information and knowledge, as well as to reducing time and the need for long-term relationships with customers in contrast to short-term relationships with suppliers. The managers adopted a project-specific approach mainly to the use of material resources. A more holistic view of resources could enable the development of novel solutions in construction.