نتایج جستجو برای: melting point

تعداد نتایج: 547590  

Journal: :Journal of the Japan Society of Colour Material 2014

Journal: :Acta Chemica Scandinavica 1947

Journal: :Journal of Japan Oil Chemists' Society 1969

Journal: :Journal of Japan Oil Chemists' Society 1970

Journal: :The Journal of Criminal Law and Criminology (1973-) 1995

Journal: :The Journal of experimental biology 2008
Robert Buchwald Michael D Breed Alan R Greenberg

Standard melting point analyses only partially describe the thermal properties of eusocial beeswaxes. Differential scanning calorimetry (DSC) revealed that thermal phase changes in wax are initiated at substantially lower temperatures than visually observed melting points. Instead of a sharp, single endothermic peak at the published melting point of 64 degrees C, DSC analysis of Apis mellifera ...

Journal: :Physical review letters 2008
C Hock S Straburg H Haberland B v Issendorff A Aguado M Schmidt

Melting-point depression by soluble impurities is an entropy-driven phenomenon. Studying partially oxidized free sodium nanoparticles, we found an additional mechanism, which is caused by insoluble impurities. Oxidization of sodium clusters with 135-192 atoms by a single oxygen molecule causes a melting-point depression of 17+/-6 K; additional oxygen amplifies the effect. This is in contrast to...

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