microstructural investigation of low molecular weight 1,4-polybutadiene (1,4-pbd) was studied by 1h and 13c nuclear magnetic resonance spectroscopy (nmr). the isomer contents of 1,4-cis, 1,4-trans and 1,2- vinyl in polybutadiene microstructure were determined. the number average molecular weight for low molecular weight polybutadiene was measured by nmr techniques and comparison was made with g...

Thermostats As we have presented it so far, molecular dynamics is performed in the microcanonical ensemble of constant NVE variables (and technically also: total momentum P). We found that we could estimate the temperature using thermodynamic averages. It is often desirable, however, to specify the temperature a priori and perform a simulation in the canonical ensemble. There are several approa...

suggest that over 40 percent of college females in their sample perceived themselves as overweight whereas only 12 percent actually demonstrated weight problems. Several of the chapters attempt to define anorexia's relation to other psychiatric diagnoses. The chapters by Solyom et al. and by Bemis note that the obsessive nature of the dietary restriction and fear of weight resemble aspects of o...