Related Experiment Video
Updated: Dec 18, 2025

Isolation of Mouse Respiratory Epithelial Cells and Exposure to Experimental Cigarette Smoke at Air Liquid Interface
Published on: February 21, 2011
The effects of ventilation and building characteristics on indoor air quality in waterpipe cafés
Roohollah Rostami1, Kazem Naddafi2, Hossein Arfaeinia3,4
1Research center for health sciences and technologies, Semnan University of medical sciences, Semnan, Iran.
Abstract:
To determine the concentration of carbon monoxide (CO) and particulate matter (PMs), indoor air samples were collected from 60 waterpipe cafés in Ardabil city of Iran. Moreover, the influence of several structural, operational, and ventilation system were evaluated on the concentration of the selected pollutants. The results showed that the mean concentration of CO (12.0 ± 7.2 mg/m3) and PMs (PM1 = 171.5 ± 119.6 μg/m3, PM2.5 = 303.3 ± 201.9 μg/m3, PM10 = 440.3 ± 272.2 μg/m3) were notably higher than the guideline levels. According to the results, open face/café area was influenced by the natural ventilation rate and the mean air exchange rate was 3.1 ± 1.1 min-1. The natural ventilation has a functional role on air quality of the cafes, and fan-type mechanical ventilation was influencing factor on CO concentration when the natural ventilation was restricted. "Type of used charcoal" had the highest influence on the releasing of pollutants inside the cafés as the pollutant concentrations were lower for simple (raw) charcoal compared with the favored (aromatic) one. The results indicated that the building characteristics and natural ventilation considerably affect air quality of the cafes.
More Related Videos
10:44Comparing the Effects of Electronic Cigarette Vapor and Cigarette Smoke in a Novel In Vivo Exposure System
Published on: May 24, 2017
09:50Impact Assessment of Repeated Exposure of Organotypic 3D Bronchial and Nasal Tissue Culture Models to Whole Cigarette Smoke
Published on: February 12, 2015
Related Concept Videos
Factors Affecting Pulmonary Ventilation
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
Assessment of Ventilation I: Respiratory Rate
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:
Design Example: Designing a Residential Plumbing System
General Characteristics of Pipe Flow I
The classification of fluid...
General Characteristics of Pipe Flow II
The distance to reach a fully developed flow is called the entrance length and depends on the...
Single Pipe Systems
In a Type I problem, fluid properties (density and viscosity), pipe characteristics (including diameter, length, and surface roughness), and the flow rate or average velocity are...