Added start date of 01 October 1991 to WD4KXB/VE2 in Canada, VE in CQ Zone 2 Changed start date for ZK1BY on North Cook Islands, E5/N to 01 October 1962 Changed start date for ZK1JKH on North Cook Islands, E5/N to 10 August 1994 ZL3ABJ/C starting 01 January 1969 is Chatham ...
An experimental scanning transmission electron microscope (STEM) had been built by Manfred von Ardenne in Berlin before the war [10]. However, it was the work of Albert Crewe at the University of Chicago in the late 1960s that led to the development of STEM as a practical technique. Crewe...
Each composition (in total 100 g) has been obtained by the application of two different modalities: Modality (1): water and bentonite were sonicated for 10 min. After the addition of salts, the dispersion sonicated for a further 30 min. Modality (2): water and salts are sonicated for 30...