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Indoor air quality

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https://www.readbyqxmd.com/read/29149117/-influence-of-titanium-dioxide-activated-under-visible-light-on-survival-of-mold-fungi
#1
Daria Kądziołka, Paulina Rokicka, Agata Markowska-Szczupak, Antoni W Morawski
BACKGROUND: In public and residential buildings, fungi are usually found in the dust or growing on building materials medium such. It has been known that a number of their spores may contaminate the indoor environment and deteriorate air quality in accommodation spaces. Previously designed air cleaning systems do not guarantee a complete removal of agents harmful to humans and animals. Therefore, there is a great need to develop a new solution to remove molds from indoor air. In recent years, photocatalysis based on titanium dioxide (TiO<sub>2</sub>) has been proposed as an effective method for air pollutants removal...
November 17, 2017: Medycyna Pracy
https://www.readbyqxmd.com/read/29143797/indoor-air-quality-analysis-using-deep-learning-with-sensor-data
#2
Jaehyun Ahn, Dongil Shin, Kyuho Kim, Jihoon Yang
Indoor air quality analysis is of interest to understand the abnormal atmospheric phenomena and external factors that affect air quality. By recording and analyzing quality measurements, we are able to observe patterns in the measurements and predict the air quality of near future. We designed a microchip made out of sensors that is capable of periodically recording measurements, and proposed a model that estimates atmospheric changes using deep learning. In addition, we developed an efficient algorithm to determine the optimal observation period for accurate air quality prediction...
October 28, 2017: Sensors
https://www.readbyqxmd.com/read/29130534/skin-squames-contribute-to-ammonia-and-volatile-fatty-acids-production-from-bacteria-colonising-in-air-cooling-units-with-odour-complaints
#3
Tsz Wai Ng, Pui Ying Chan, Tsz Ting Chan, Haoxiang Wu, Ka Man Lai
One of the most notable indoor air quality problems is odour emission. This study investigated the potential contribution of skin squames to the production of ammonia (NH3 ) and volatile organic acids (VFAs) by seven bacteria isolated from air-cooling (AC) units with complaints of urine and body odours. Our previous study showed that keratinolytic activity is higher in AC units with odour complaints than those without. In the offices where these units are located, the most likely source of keratins is from human skin squames...
November 12, 2017: Indoor Air
https://www.readbyqxmd.com/read/29127930/indoor-air-quality-of-environments-used-for-physical-exercise-and-sports-practice-systematic-review
#4
REVIEW
Alexandro Andrade, Fábio Hech Dominski
BACKGROUND: Systematic reviews have the potential to contribute substantially to environmental health and risk assessment. OBJECTIVE: This study aimed to investigate indoor air quality of environments used for physical exercise and sports practice through a systematic review. METHODS: The systematic review followed the PRISMA guidelines and was recorded in the PROSPERO registry (CRD42016036057). The search was performed using the SciELO, Science Direct, Scopus, LILACS, MEDLINE via PubMed, and SPORTDiscus databases, from their inception through April 2017...
November 8, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29123371/monitoring-biodiversity-in-libraries-a-pilot-study-and-perspectives-for-indoor-air-quality
#5
REVIEW
F Valeriani, C Cianfanelli, G Gianfranceschi, S Santucci, V Romano Spica, N Mucci
Indoor Air Quality (IAQ) in libraries is influenced by the presence of specific factors which can impact on both paper storage as well as people health. Microclimatic conditions induce and support a biodiversity pattern involving environmental and anthropic microorganisms. We used a multidisciplinary monitoring model to characterize microflora biodiversity by Next Generation Sequencing (NGS). Biodiversity indexes were adapted to evaluate anthropic vs environmental pollution by combining Shannon mean index (H), species representativeness (EH), human/environmental pollution ratio (SA) to better characterize the NGS output and acquire synthetic information on Indoor Air Microbial Biodiversity (IAMB)...
September 2017: Journal of Preventive Medicine and Hygiene
https://www.readbyqxmd.com/read/29116891/measurements-and-health-impacts-of-carbon-black-and-btexs-in-photocopy-centers
#6
Pattama Senthong, Sivasit Wittayasilp
The purpose of this study was to measure the concentration of carbon black and BTEXs at three photocopy centers and to assess the health risk following exposure. Air samples were collected by sampling in the breathing zone of workers during the class and examination periods. The results found that the concentration of carbon black before operation was higher than morning and afternoon in both class and examination periods. These levels are considerably lower than the suggested limited value set by OSHA. Toluene had the highest concentration but did not exceed of recommended exposure limit by NIOSH...
November 8, 2017: Archives of Environmental & Occupational Health
https://www.readbyqxmd.com/read/29108089/impacts-of-weatherization-on-indoor-air-quality-a-field-study-of-514-homes
#7
Scott Pigg, Dan Cautley, Paul W Francisco
Residential energy efficiency retrofits continue to be common in the United States, especially through governmental and utility programs. Because of the potential for reduced air exchange, there have been concerns raised regarding the potential for negative impacts on health and safety of residents when air sealing occurs. To address this concern, a study was undertaken in 2009-2010 to evaluate the indoor air quality impacts of weatherization performed through the U.S. Department of Energy's Weatherization Assistance Program...
November 6, 2017: Indoor Air
https://www.readbyqxmd.com/read/29107378/the-role-of-the-indoor-environment-residential-determinants-of-allergy-asthma-and-pulmonary-function-in-children-from-a-us-mexico-border-community
#8
Erik R Svendsen, Melissa Gonzales, Adwoa Commodore
The El Paso Children's Health Study examined environmental risk factors for allergy and asthma among fourth and fifth grade schoolchildren living in a major United States-Mexico border city. Complete questionnaire information was available for 5210 children, while adequate pulmonary function data were available for a subset of 1874. Herein we studied indoor environmental health risk factors for allergy and asthma. Several indoor environmental risk factors were associated with allergy and asthma. In particular, we found that ant and spider pest problems, pet dogs, fireplace heat, central air conditioning, humidifier use, and cooking with gas stoves were positively associated with both allergy and asthma prevalence...
October 26, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29101891/effect-of-air-pollution-on-the-total-bacteria-and-pathogenic-bacteria-in-different-sizes-of-particulate-matter
#9
Huan Liu, Xu Zhang, Hao Zhang, Xiangwu Yao, Meng Zhou, Jiaqi Wang, Zhanfei He, Huihui Zhang, Liping Lou, Weihua Mao, Ping Zheng, Baolan Hu
In recent years, air pollution events have occurred frequently in China during the winter. Most studies have focused on the physical and chemical composition of polluted air. Some studies have examined the bacterial bioaerosols both indoors and outdoors. But few studies have focused on the relationship between air pollution and bacteria, especially pathogenic bacteria. Airborne PM samples with different diameters and different air quality index values were collected in Hangzhou, China from December 2014 to January 2015...
November 1, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29082361/investigation-of-an-indoor-air-quality-sensor-for-asthma-management-in-children
#10
Utkarshani Jaimini, Tanvi Banerjee, William Romine, Krishnaprasad Thirunarayan, Amit Sheth, Maninder Kalra
Monitoring indoor air quality is critical because Americans spend 93% of their life indoors, and around 6.3 million children suffer from asthma. We want to passively and unobtrusively monitor the asthma patient's environment to detect the presence of two asthma-exacerbating activities: smoking and cooking using the Foobot sensor. We propose a data-driven approach to develop a continuous monitoring-activity detection system aimed at understanding and improving indoor air quality in asthma management. In this study, we were successfully able to detect a high concentration of particulate matter, volatile organic compounds, and carbon dioxide during cooking and smoking activities...
April 2017: IEEE Sens Lett
https://www.readbyqxmd.com/read/29078189/status-of-indoor-air-pollution-iap-through-particulate-matter-pm-emissions-and-associated-health-concerns-in-south-asia
#11
REVIEW
Muhammad Junaid, Jabir Hussain Syed, Naeem Akhtar Abbasi, Muhammad Zaffar Hashmi, Riffat Naseem Malik, De-Sheng Pei
Exposure to particulate emissions poses a variety of public health concerns worldwide, specifically in developing countries. This review summarized the documented studies on indoor particulate matter (PM) emissions and their major health concerns in South Asia. Reviewed literature illustrated the alarming levels of indoor air pollution (IAP) in India, Pakistan, Nepal, and Bangladesh, while Sri Lanka and Bhutan are confronted with relatively lower levels, albeit not safe. To our knowledge, data on this issue are absent from Afghanistan and Maldives...
October 17, 2017: Chemosphere
https://www.readbyqxmd.com/read/29077554/antifungal-properties-of-essential-oils-for-improvement-of-indoor-air-quality-a-review
#12
REVIEW
Harriet Whiley, Sharyn Gaskin, Tiffany Schroder, Kirstin Ross
Concerns regarding indoor air quality, particularly the presence of fungi and moulds, are increasing. The potential for essential oils to reduce, control or remove fungi, is gaining interest as they are seen as a "natural" alternative to synthetic chemical fungicides. This review examines published research on essential oils as a method of fungal control in indoor environments. It was difficult to compare the relative performances of essential oils due to differences in research methods and reporting languages...
October 27, 2017: Reviews on Environmental Health
https://www.readbyqxmd.com/read/29074268/waterpipe-caf%C3%A3-s-are-hazardous-to-your-health-determination-of-a-waterpipe-specific-calibration-factor
#13
Mark J Travers, Jessica A Kulak, Lisa Vogl
INTRODUCTION: The use of a waterpipe to smoke tobacco has emerged as a popular trend in the United States. Waterpipe smoking establishments have had an increasing presence in the U.S., despite smoke-free air legislation. Dangers of waterpipe smoking have been documented, but less data has been gathered about the waterpipe café itself. This project sought to determine a waterpipe-specific calibration factor (CF) for measuring waterpipe aerosol, and field-test this CF by conducting surveillance on the existing waterpipe cafés of western and central New York...
October 12, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/29073525/indoor-particulate-pollution-in-fitness-centres-with-emphasis-on-ultrafine-particles
#14
Klara Slezakova, Cátia Peixoto, Marta Oliveira, Cristina Delerue-Matos, Maria do Carmo Pereira, Simone Morais
Fitness centres (FC) represent a unique indoor microenvironment. Exercising on regular basis provides countless health benefits and improves overall well-being, but if these facilities have poor indoor air quality, the respective exercisers might be subjected to some adverse risks. Considering the limited existent data, this work aimed to evaluate particulate pollution (PM10, PM2.5, and ultrafine particles - UFP) in indoor air of FC and to estimate the respective risks for occupants (both staff and exercising subjects)...
October 23, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29070452/physicochemical-risk-factors-for-building-related-symptoms-in-air-conditioned-office-buildings-ambient-particles-and-combined-exposure-to-indoor-air-pollutants
#15
Kenichi Azuma, Koichi Ikeda, Naoki Kagi, U Yanagi, Haruki Osawa
We conducted a cross-sectional epidemiological study to examine the correlation between indoor air quality (IAQ) and building-related symptoms (BRSs) of office workers in air-conditioned office buildings. We investigated 11 offices during winter and 13 offices during summer in 17 buildings with air-conditioning systems in Tokyo, Osaka, and Fukuoka, and we included 107 office workers during winter and 207 office workers during summer. We conducted environmental sampling for evaluating IAQ and concurrently administered self-reported questionnaires to collect information regarding work-related symptoms...
October 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29069442/uv-based-evaluation-of-ergosterol-for-monitoring-the-fungal-exposure-in-italian-buffalo-farms
#16
Filomena Monica Vella, Bruna Laratta
This study provided a reliable way to identify and estimate the ergosterol in farm environments, since it is renowned that is a specific indicator for the occurrence of molds and yeasts. The quickly valuation of exposure to airborne microorganisms is essential to assess the risk to which the health of employees are subjected in working places characterized by great humidity. From this view, it is worth estimating the total biomass of molds and yeast, including viable and non-viable forms, which may cause respiratory concerns to human...
October 24, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29068361/indoor-air-quality-and-health
#17
EDITORIAL
Alessandra Cincinelli, Tania Martellini
In the last few decades, Indoor Air Quality (IAQ) has received increasing attention from the international scientific community, political institutions, and environmental governances for improving the comfort, health, and wellbeing of building occupants.[...].
October 25, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29062397/key-factors-determining-indoor-air-pm10-concentrations-in-naturally-ventilated-primary-schools-in-belgrade-serbia
#18
Branislava Matic, Uros Rakic, Verica Jovanovic, Snezana Dejanovic, Nela Djonovic
INTRODUCTION: Indoor air quality (IAQ) is rated as a serious public health issue. Knowing children are accounted as more vulnerable to environmental health hazards, data are needed on air quality in schools. METHODS: A project was conducted from 2007 until 2009 (SEARCH, School Environment and Respiratory Health of Children), aiming to verify links between IAQ and children's respiratory health. Study was conducted in ten primary schools on 735 children, in 44 classrooms...
October 2017: Zdravstveno Varstvo
https://www.readbyqxmd.com/read/29044438/high-total-volatile-organic-compounds-pollution-in-a-hospital-dental-department
#19
Ming-Hui Liu, Tao-Hsin Tung, Fen-Fang Chung, Li-Chuan Chuang, Gwo-Hwa Wan
Bioaerosols produced by dental procedures may affect indoor air quality and cause infections in dental healthcare workers. To provide air quality data that can be used to protect dental healthcare workers, this study evaluated the air quality and its influencing factors in the dental department of the Chang Gung Memorial Hospital in Taiwan. The study was a cross-sectional study design. Indoor air quality (IAQ) evaluations were conducted in six locations: pediatric dentistry, craniofacial orthodontic dentistry, periodontal dentistry, and general practice dentistry, instrument washing room, and patient waiting area...
October 18, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29043589/assessment-of-filtration-efficiency-and-physiological-responses-of-selected-plant-species-to-indoor-air-pollutants-toluene-and-2-ethylhexanol-under-chamber-conditions
#20
Vanessa Hörmann, Klaus-Reinhard Brenske, Christian Ulrichs
Three common plant species (Dieffenbachia maculata, Spathiphyllum wallisii, and Asparagus densiflorus) were tested against their capacity to remove the air pollutants toluene (20.0 mg m(-3)) and 2-ethylhexanol (14.6 mg m(-3)) under light or under dark in chamber experiments of 48-h duration. Results revealed only limited pollutant filtration capabilities and indicate that aerial plant parts of the tested species are only of limited value for indoor air quality improvement. The removal rate constant ranged for toluene from 3...
October 18, 2017: Environmental Science and Pollution Research International
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