Large amounts of CO adsorption resulted from a pulse adsorption experiment at 323 K,giving ~300% Pt dispersion in the title catalyst.An in situ DRIFTS investigation showed that carbonate species on the Ce oxide surface are responsible for the CO adsorption, as a result of CO spillover. Lowering the temperature to 195 K reduced the amount of CO adsorption.The Pt particle size could be determined...

309 The health benefits of regular physical activity have been studied and are well described in the literature (1). The psychosocial benefits of regular physical activity, which are considered to be as important as the health benefits, are less clear (2). The current data regarding the impact of physical activity on children’s psychosocial health confirm an associative, rather then a causal li...

Radiotherapy procedures fall into two main categories: external beam radiotherapy and brachytherapy. In external beam radiotherapy the radiation source is at a certain distance from the patient and the target within the patient is irradiated with an external radiation beam. In brachytherapy (see Chapter 13) radiation sources are placed directly into the target volume (intracavitary or interstit...

Most early investigations of the chemistry of endotoxins were limited to gross analyses. I t soon became apparent that subtler means of degradation, such as enzymes, were necessary to determine structural configurations and intramolecular relationships within the endotoxin complex. Just such a subtle endotoxin-degrading system was suggested by the observation of Hegemann (1954) that human plasm...

deteriorated urban textures are areas of a city isolated from developmental life cycle. they have turned into the focus of problems and inefficiencies. the evaluation of renewal actions claims to promote residents’ satisfaction in some cases. at the same time of improving objective and economic quality of life, there are claims regarding the lack of any improvements in their subjective quality ...