The behaviour of some commercial tool carbides and turbine ceramics has been investigated in regard to resistance to crack initiation, crack propagation and retained strength after thermal shock. New data are provided, particularly measurements of the fracture toughness of these materials at actual operating temperatures (up to 1200 ~ C). Many of the materials did not follow the generally accep...

The extremely high thermal conductivity of individual carbon nanotubes, predicted theoretically and observed experimentally, has not yet been achieved for large nanotube assemblies. Resistances at tube-tube interconnections and tube-electrode interfaces have been considered the main obstacles for effective electronic and heat transport. Here we show that, even for infinitely long and perfect na...

The thermal quenching data of 5d emission from Eu 2+ and Ce 3+ 4f Pr , Tb are shown to be consistent with vacuum referred binding energy schemes. scheme construction parameters 170 different compounds provided.

We have grown Ce-doped (La,Y)2Si2O7 single crystal by micro-pulling-down method and investigated its optical scintillation properties. successfully prepared the with (Ce0.015La0.600Y0.385)2Si2O7 composition. The observed thermal quenching process could be characterized temperature (T50%) of 526 K activation energy was determined to 0.62 eV. Further considering factors, it found that caused at l...

The main light harvesting complex of photosystem II in plants, LHCII, exists in a trimeric state. To understand the biological significance of trimerization, a comparison has been made been LHCII trimers and LHCII monomers prepared by treatment with phospholipase. The treatment used caused no loss of chlorophyll, but there was a difference in carotenoid composition, together with the previously...