Why does an espresso need a crema and how should it look like?

Why does an espresso need a crema and how should it look like?
Snapshots of the ProcessNet Annual Conference and the 31st DECHEMA Annual Meeting of biotechnologists in Aachen, Germany
A. Laganà was involved in the development and implementation of the EChemTest of the European Chemistry Thematic Network (ECTN)
Dr. M. Fricke, BASF, talks about the first polyurethane aerogel high-performance insulating material
As part of the activities of the International Year of Crystallography, STOE, DECTRIS, and Xenocs invited young scientists
5th EuCheMS Chemistry Congress (ECC) held in Istanbul last week
Turning quantum chemistry around could completely change compound design
Since the beginning of this year Cesa has been the new President of IUPAC
Chicgoua Noubactep, Associate Professor, University of Göttingen, Germany, has the dream of treating water for the whole world
Good networking skills have become more important than ever; a good start is to ask yourself who you are