A $\ast$-ring
 $R$ is called a $\pi$-Baer $\ast$-ring, if for any projection invariant left ideal $Y$ of $R$, the right annihilator $Y $
 generated, as ideal, by projection.
 In this note, we
 study some properties such $\ast$-rings.
 We indicate interrelationships between $\ast$-rings and related classes rings as
 rings, Baer $\ast$-rings, quasi-Baer $\ast$-rings....

Untrained healthy male volunteers were subjected to the study of the effects of physical exercise (bicycle ergometer, 150 W for 30 min) upon the activities of aspartate aminotransferase (AST [GOT]) isoenzymes, soluble and mitochondrial (AST-s and AST-m) with and without reactivation by the co-enzyme pyridoxal 5'phosphate (PALP) in plasma. Blood samples were drawn at the beginning and end of the...

We address a declarative construction of abstract syntax trees with Parsing Expression Grammars. AST operators (constructor, connector, and tagging) are newly defined to specify flexible AST constructions. A new challenge coming with PEGs is the consistency management of ASTs in backtracking and packrat parsing. We make the transaction AST machine in order to perform AST operations in the conte...

Today's 'backseat generation' of children is more often driven to school. Active school travel (AST) can contribute up to 30% of recommended daily physical activity. Although governed by a complex set of factors, parents are considered 'gatekeepers' of children's travel mode decisions. Therefore, we investigate the relationship between parental support and children's AST. Data were from Active ...

Rat liver cytosolic sulfotransferase activity forms the highly reactive sulfuric acid ester of N-hydroxy-2-acetylaminofluorene (N-OH-2AAF), an ultimate carcinogen in 2-acetylaminofluorene (2AAF) hepatocarcinogenesis. A previous report demonstrated that 2AAF-induced liver hyperplastic nodules displayed a persistent loss of cytosolic N-OH-2AAF sulfotransferase activity following a hepatocarcinoge...