Food production and consumption have an impact on the environment. As the environmental awareness of consumers rises, the demand of environmental friendly food products grows too. In this paper, a comparative study of the environmental performance of beef, pork and ostrich meat is carried out...

We analyse present biomass utilization and the potential of biomass residues for energy use in Castilla y León and compare biomass with other forms of local energy production. Residual biomass supplied about 9% of the total energy consumed in 1990. About 85% of the biomass is used in the...

We use scanning tunneling microscopy to measure magnetic field induced strains in highly oriented pyrolytic graphite. This is done by using a scanning tunneling microscope with some magnetic components, which however do not produce an observable response within our resolution in the case of pure...

Comparison between low frequency Raman scattering and inelastic neutron scattering of amorphous polybutadiene shows that the light-vibration coupling coefficient is linearly frequency dependent. This agrees with earlier findings and we show here that it can be interpreted employing two different...

We argue that the statistical character of wave propagation in random media can be described in terms of two universal parameters which are average properties of eigenmodes of the field. We show that the width and spacing of electromagnetic modes can be determined from the measurement of the...