Traffic–related pollutant has been recognized as an air pollution hot spot due to its large emission rate and great health impacts for the exposed population. In the present investigation, a computational fluid dynamics technique is used to evaluate the effect of traffic pollutions on indoor air quality of a naturally ventilated building. The transport of street-level nonreactive pollutants emi...

Most traditional elementary school classrooms here do not have air-conditioners and it often feel stuffy in classrooms located in the top floors. In addition, traditional classrooms widely have noise problem, so do the open educational classrooms. If the windows and doors are closed to reduce noise, it will result in the phenomenon of stuffiness, which largely prevents the external air entering...

One lung ventilation (OLV) is a technique routinely used in thoracic anesthesia to facilitate thoracic surgery. We describe a case of pediatric with Pierre Robin sequence using SupremeTM laryngeal mask airway (LMA) and Arndt endobronchial blocker to achieve OLV.

Pad and fan cooling systems are the most popular evaporative cooling system, especially in the floral industry of tropical and subtropical regions. Microsoft Windows based software written in MATLAB was developed as a teaching/research tool for designing pad and fan systems. This software incorporates information for 4 models of commonly used evaporative cooling pad, fan curves for 9 models of ...

introduction: tuberculosis (tb), with different types of respiratory tract involvements, has a high rate of mortality all around the world. endobronchial involvement, which is a slightly common tuberculous infection, requires special attention due to its severe complications such as bronchostenosis. aim of study of this study was describes, one type of pulmonary tuberculosis with less diagnosed...

In ancient Chinese architecture, Feng Shui was a prevalent practice used to enhance the built environment. This study utilized computer simulation techniques assess effectiveness of Long–Hu Sand layout in Bailudong Academy complex Jiangxi, China, compared without principles. Computational fluid dynamics (CFD) were employed simulate winter courtyard wind environment, and resulting simulations an...

This paper uses airflow modeling and particle-tracking methodologies to compare the risk of contaminant deposition on an operating room (OR) surgical site and back table for different ventilation systems. The ventilation system designs considered incorporated commonly used diffuser types, in particular, conventional, laminar, nonaspirating, and displacement diffuser types. Further, a range of d...

Understanding mixing times for transient pollutants in mechanically ventilated rooms is important for resilience and safety planning for accidental releases of toxic material. There is a lack of information on the ability of simple models available to predict these times for ventilated spaces with different geometries and ventilation configurations. Three analytical mixing time models, includin...

Urban planning and design, with the objectives of energy efficiency climate adaptation, is receiving more attention as urban consumption keeps rising. As technical representatives large spans high difficulties, sports stadia have a broad range conservation emission reduction compared traditional buildings an extremely close relationship building environment microclimate, so it necessary to stud...

With the gradual depletion of shallow resources, process resource exploitation is being transferred to greater depths. The temperature surrounding rock increases gradually in deep mining, and underground substation chambers often exceeds normal working summer. In this paper, equipment layout ventilation conditions chamber Jiangxi Qujiang Mining Company were selected as research subjects, numeri...