نتایج جستجو برای: ashrae 93 standard
تعداد نتایج: 568836 فیلتر نتایج به سال:
OBJECTIVES To assess the clinical and the economic impacts of intraprocedural use of contrast-enhanced ultrasound (CEUS) in patients undergoing percutaneous radiofrequency ablation for small (<2.5 cm) hepatocellular carcinomas. METHODS One hundred and forty-eight hepatocellular carcinomas in 93 patients were treated by percutaneous radiofrequency ablation and immediate assessment by intraproc...
The correct design of a borehole heat exchanger (BHE) system implies the accurate knowledge of borehole and ground thermal properties, the correct evaluation of building heating or cooling demands and the correct procedure to assess the final overall BHE length related to BHE configuration shape. A careful design is required to make profitable payback plans and provide expected long time perfor...
BACKGROUND A previous observational study detected a strong positive relationship between sick leave absences and carbon dioxide (CO2) concentrations in office buildings in the Boston area. The authors speculated that the observed association was due to a causal effect associated with low dilution ventilation, perhaps increased airborne transmission of respiratory infections. This study was und...
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