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In Switzerland, walking accounts for 30% of trips and 44% of single-mode episodes. This is higher than in many countries but does not account for walking distances or durations, which tend to be short according to evidence from North America. This contribu ...
Since the 20th century, the rate of urbanization in the world has been increasing exponentially and will reach 68% in 2050. In parallel with this expansion, the size and activities of cities are also greatly growing. As a result, cities are depleting avail ...
SO2 emission controls, combined with modestly increasing ammonia, have been thought to generate aerosol with significantly reduced acidity for cases in which sulfate is partially substituted by nitrate. However, neither expectation agrees with decadal o ...
Today organizations are more than ever complex systems. They are large, ramified, distributed, and intertwined so that their organic structure seems like a tangle of activities. Day by day individuals contribute to keep these structures alive with their wo ...
Reductive biostimulation is currently being explored as a possible remediation strategy for U-contaminated groundwater, and is being investigated at a field site in Rifle, CO, USA. The long-term stability of the resulting U(IV) phases is a key component of ...
Kinetic models of chemical reaction systems are typically represented in terms of state variables, such as concentrations, temperature and partial pressures [1]. These state variables in turn depend on the underlying reactions, transfer phenomena, and tran ...
We have at our disposal observations relating to the mortality due to different types of cancer and we wish to compare them with a theoretical model. The usual models lead to increased mortality with increasing age, instead of the drop which is observed af ...
Christian Menn hat in den letzten 15 Jahren in den Vereinigten Staaten eine eindrückliche Serie von Brücken an exponierten Lagen entworfen. Es sind Brücken, die allein durch ihr Tragwerk faszinieren. Durch stetiges Optimieren sind neuartige Tragwerksformen ...
This report presents the progress achieved in the development and implementation of the PLC technology during the years 2003 and 2004. It presents the progress on the standardization work for products and for network standards. It also gives a general view ...
