Maintaining the performance of a fuel cell stack requires appropriate management water in membrane electrode. One solution is to apply an external humidifier supply gases. However, operating conditions change continuously, which significantly affects and gas characteristics. A straightforward module needed for integration with system model. In this study, lumped-mass model was used simulate hol...

background and purpose: implementing the guidelines to prevent vap has been shown to have a significant effect on reducing the incidence of vap. studies indicate that icu staff have poor knowledge and low implementation rate of the standard preventive measures related to vap. the present study aims to evaluate the knowledge of nurses in the intensive care unit in university hospitals of sari. m...

Background: Test anxiety (TA) can hinder students’ academic achievement and cause them educational decline and psychological problems. Objective: The effect of inhalation aromatherapy with lavender essential oil on nursing students’ test anxiety was investigated. Methods: This was a quasi-experimental study was conducted on 33 nursing students who had taken the Community Health Nursing II cours...

Mixed agricultural residue, inoculated with aerobic sulfide oxidizing microbial consortium, was used as biofilter media to study the removal efficiency (,R) of hydrogen sulfide (H2S). The effect of humidification and inlet H2S volume fraction on the performance of biofilter was also investigated. A 3.9 l bench scale biofilter was continuously operated to treat air containing H2S gas in the rang...

BACKGROUND Passive humidifiers have gained acceptance in the intensive care unit because of their low cost, simple operation, and elimination of condensate from the breathing circuit. However, the additional dead space of these devices may adversely affect respiratory function in certain patients. This study evaluates the effects of passive humidifier dead space on respiratory function. METHO...

of Recommendations • Ventilator circuits should not be changed routinely for infection control purposes. The maximum duration of time that circuits can be used safely is unknown. • Evidence is lacking related to ventilator-associated pneumonia (VAP) and issues of heated versus unheated circuits, type of heated humidifier, method for filling the humidifier, and technique for clearing condensate ...

BACKGROUND Heated breathing tubes were developed to improve heated humidification in continuous positive airway pressure (CPAP) therapy of patients with obstructive sleep apnea syndrome (OSAS). OBJECTIVES We wanted to investigate the influence of a heated breathing tube on patients' satisfaction with the treatment, the rate of side effects and the adherence to treatment. METHODS Eighty-eigh...

BACKGROUND Children who were only exposed to a mixture of chloromethylisothiazolinone (CMIT) and methylisothiazolinone (MIT) as humidifier disinfectant (HD) components were evaluated for humidifier disinfectant-associated lung injury (HDLI) from 2012. This study was to evaluate the pulmonary function using, impulse oscillometry (IOS) for children exposed to a mixture of CMIT/MIT from HD. METH...

OBJECTIVE To evaluate optimal humidifier water temperature when using a helmet for noninvasive ventilation. METHODS Twenty-eight healthy individuals underwent 8 cm H2O CPAP ventilation with FIO2 of 0.21 and 0.5. Each was sequentially tested in the following order: using the helmet without humidification at ambient temperature; with humidification with unheated chamber water; and with humidifi...