conclusions our study revealed that patients with the diagnosis of breast cancer have greater bpe in comparison with control group. the results may be indicative for higher probability of developing breast cancer in patients with higher bpe. therefore, ce-mri could be a useful tool for breast cancer risk assessment. objectives background parenchymal enhancement (bpe) on contrast-enhanced magnet...

the existing studies of threshing process of combine harvesters adopt the assumption of constant mass, which is contradictory to the phenomenon of separation of grains and short stalks in actual threshing process. therefore, the characteristics of threshing and separation are not accurately described. aiming at this problem, this study established the tangential-longitudinal threshing and separ...

we studied the role of nutrients on various aspects of the periphyton community in artificialstreams. dry mass, ash-free dry mass, chlorophyll a and biovolume of the periphyton community weremeasured under 3 different nutrient regimes, including one from natural streams as a control and twowhich were enriched with n and n+p. results of this experiment indicate that the standing crop of theperip...