RESUMO
A sensor based on tunable diode laser absorption spectroscopy was constructed for time-resolved temperature and water vapor concentration measurements in a scramjet combustor. The sensor probed two absorption lines near 1390 nm with two time-multiplexed lasers used to measure temperature and water vapor concentration at up to 20 kHz. A demonstration experiment was performed in the supersonic, expanding exhaust region of the combustor, showing the measurement to be repeatable, able to resolve temporal trends during tunnel operation, and sensitive to changes in combustor operating conditions.
RESUMO
We report a case of unexplained and persistently elevated ASAT activity in serum. This appeared to be due to a macro-enzyme of ASAT, as was demonstrated by protein-A-Sepharose treatment of the serum sample. Although macro-ASAT seems to be clinically irrelevant, unexplained raised ASAT activity without acknowledgement of its macroenzyme nature may lead to unnecessary diagnostic procedures.
Assuntos
Aspartato Aminotransferases/sangue , Dor Lombar/fisiopatologia , Aspartato Aminotransferases/análise , Ensaios Enzimáticos Clínicos , Diagnóstico Diferencial , Feminino , Humanos , Pessoa de Meia-IdadeRESUMO
Primary psoas abscesses are rare and the pathogenesis is obscure. In most cases Staphylococcus aureus is the causative bacterium. Therapy consists of drainage of the abscess and antibiotics. In this article we present a patient with a primary psoas abscess caused by a Streptococcus pneumoniae infection.
