Complexity and Expressive Power of Weakly Well-Designed SPARQL.

SPARQL is the standard query language for RDF data. The distinctive feature of SPARQL is the OPTIONAL operator, which allows for partial answers when complete answers are not available due to lack of information. However, optional matching is computationally expensive-query answering is PSPACE-complete.

[A fatal case of trichinelliasis with intensive invasion and acute massive hemorrhage from a stomach ulcer].

The paper deals with a fatal case of trichinosis in a 61-year-old male due to acute massive gastric hemorrhage from the old silent gastric ulcer developed at week 8 after the onset of infection (or at week 3 after the appearance of the first clinical signs). At autopsy, the method of ingestion of cross-striated muscular samples revealed high Trichinella spiralis infection rates: from 135 larvae per g of muscles of the tongue to 512 larvae in the diaphragm. Infection had occurred due to long-term (1-month) ingestion of the pork obtained from a subsidiary farm of Moscow Province.