The teaching quality of urology clinical noviceship was restricted by strained teaching time,relative shortage of teaching resources and the lack of patients cooperation.
Aiming at the shortage of visbreaker feedstock and fuel oil as well as the surplus of asphalt in Shanghai Oil Refinery, asphalt blended feedstock was tested.
Under conditions of food shortage or other stresses, they come together to form a slug-like aggregation of maebas called a pseudoplasmodium, which acts like an individual organism.