Refining the aggregate exposure pathway

Refining Aggregate Conditions in Relational Learning

In relational learning, predictions for an individual are based not only on its own properties but also on the properties of a set of related individuals. Many systems use aggregates to summarize this set. Features thus introduced compare the result of an aggregate function to a threshold. We consider the case where the set to be aggregated is generated by a complex query and present a framewor...

Methyl Bromide Risk Characterization Document Aggregate Exposure

An enzyme aggregate in the tryptophan pathway of Neurospora crassa.

reactions specifically involved in tryptophan biosynthesis are under the T?ntrol of four genes in Neurospora crassa (AHMAD and CATCHESIDE 1960). The complexity of the gene-enzyme relationships in this pathway was discovered by AHMAD and CATCHESIDE (1960) and AHMAD, KHALIL, KHAN and MOZMADAR (1964) who demonstrated that lesions at one of these genes, tryp-2, could prevent either the accumulation...

Aggregate-level lead exposure, gun violence, homicide, and rape

CONTEXT An increasing body of research has linked the geographic distribution of lead with various indicators of criminal and antisocial behavior. OBJECTIVE The current study, using data from an ongoing project related to lead exposure in St. Louis City, MO, analyzed the association between aggregate blood lead levels and specific indicators violent crime within the city. DESIGN Ecological ...

Refining the Pathway of Carbide Insertion into the Nitrogenase M-cluster

Carbide insertion plays a pivotal role in the biosynthesis of M-cluster, the cofactor of nitrogenase. Previously, we proposed a carbide insertion pathway involving methyltransfer from SAM to a FeS precursor and hydrogen abstraction from this methyl group that initiates the radical-based precursor maturation. Here we demonstrate that the methyl group is transferred to a precursor-associated sulf...