Airborne Contamination
Mostrando 1-12 de 39 artigos, teses e dissertações.
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1. Indoor Air Quality in the Hospital: The Influence of Heating, Ventilating and Conditioning Systems
Abstract Clean, fresh air is the most important requirement for good indoor air quality (IAQ) in all buildings, but it is especially important with regard to the environments within hospitals and other healthcare facilities. The literature indicates that buildings with heating, ventilating and air conditioning (HVAC) systems may have an increased risk of sic
Braz. arch. biol. technol.. Publicado em: 05/09/2019
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2. Can Aspergillus fumigatus conidia cause false-positive results in the galactomannan enzyme immunoassay test?
Abstract INTRODUCTION: Several factors can cause false-positive results in the galactomannan (GM) test; however, others remain unknown. Presently, the impact of airborne contamination by Aspergillus conidia during enzyme-linked immunosorbent assay (ELISA) remains uninvestigated. METHODS: We studied 12 A. fumigatus isolates. Fungal conidia were serially d
Rev. Soc. Bras. Med. Trop.. Publicado em: 2018-06
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3. Dynamics of the seasonal airborne propagation of Staphylococcus aureus in academic dental clinics
Abstract Objective Staphylococcus aureus strains can be disseminated during dental treatments and occasionally lead to the contamination and infection of patients and dentists, which is an important public health problem. The dynamics of the airborne propagation and the genetic diversity of S. aureus isolated in an academic dental clinic environment were in
J. Appl. Oral Sci.. Publicado em: 05/04/2018
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4. Measurement, prediction and analysis of airborne particles in surgical rooms. / Medição, predição e análise de partículas aéreas em salas cirúrgicas.
Air conditioning systems exert an important function in surgical rooms, to protect the surgical wound and the sterile equipments from airborne infected particles. This protection is achieved by means of a simultaneous control of the movement and distribution of the air, of the temperature, of the humidity, of the filtering, of air infiltrations from other se
Publicado em: 2008
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5. Indoor air microbiological evaluation of offices, hospitals, industries, and shopping centers
In this study it was compared the MAS-100 and the Andersen air samplers' performances and a similar trend in both instruments was observed. It was also evaluated the microbial contamination levels in 3060 samples of offices, hospitals, industries, and shopping centers, in the period of 1998 to 2002, in Rio de Janeiro city. Considering each environment, 94.3
Memórias do Instituto Oswaldo Cruz. Publicado em: 2005-07
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6. Microbiological Contamination of Hospital Air: I. Quantitative Studies
The levels of airborne contamination in various areas of two hospitals were determined during a 15-month sampling period, using Casella and Andersen volumetric samplers. Based on nearly 5,000 samples, the mean count per ft3 ranged from 4.5 in obstetric-gynecology delivery rooms to 72.4 in waste-handling areas. The mean count for the entire hospital environme
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7. Endotoxins in baled cottons and airborne dusts in textile mills in the People's Republic of China.
Bulk cotton samples and airborne vertical elutriated cotton dusts were obtained from textile mills in Shanghai, People's Republic of China. Analysis of endotoxin contents revealed that baled cottons which were grown in different countries varied in endotoxin contamination. The two textile mills, which operated at similar overall airborne dust levels, differe
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8. Bacteriophage Aerosol Challenge of Installed Air Contamination Control Systems
The effectiveness of installed air contamination control systems for removal of airborne microorganisms was determined. Seven separate systems were challenged with aerosolized T1 bacteriophage. Air samples were collected with Andersen samplers containing agar plates that had been swabbed with susceptible Escherichia coli. The advantages of using bacteriophag
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9. The Effect of Oiling The Cotton on The Airborne Contamination in Card Rooms
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10. Monitoring airborne fungal spores in an experimental indoor environment to evaluate sampling methods and the effects of human activity on air sampling.
Aerobiological monitoring was conducted in an experimental room to aid in the development of standardized sampling protocols for airborne microorganisms in the indoor environment. The objectives of this research were to evaluate the relative efficiencies of selected sampling methods for the retrieval of airborne fungal spores and to determine the effect of h
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11. Comparative Levels and Types of Microbial Contamination Detected in Industrial Clean Rooms
The primary objective of this study was to determine quantitatively and qualitatively the predominant types of microbial contamination occurring in conventional and laminar flow clean rooms. One horizontal laminar flow, three conventional industrial clean rooms, and three open factory areas were selected for microbiological tests. The results showed that as
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12. Use of rRNA gene restriction patterns to evaluate lactic acid bacterium contamination of vacuum-packaged sliced cooked whole-meat product in a meat processing plant.
Molecular typing was applied to an in-plant lactic acid bacterium (LAB) contamination analysis of a vacuum-packaged sliced cooked whole-meat product. A total of 982 LAB isolates from the raw mass, product, and the environment at different production stages were screened by restriction endonuclease (EcoRI and HindIII) analysis. rRNA gene restriction patterns