A study of the dispersion of expiratory aerosols in unidirectional downward and ceiling-return type airflows using a multiphase approach.

abstract：:High-efficiency particulate air (HEPA) filtration in combination with an electrostatic precipitator (ESP) can be a cost-effective approach to reducing indoor particulate exposure, but ESPs produce ozone. The health effect of combined ESP-HEPA filtration has not been examined. We conducted an intervention study in 89 v...

journal_title：Indoor air

authors： Day DB,Xiang J,Mo J,Clyde MA,Weschler CJ,Li F,Gong J,Chung M,Zhang Y,Zhang J

更新日期：2018-05-01 00:00:00

abstract：UNLABELLED:When considering how people are infected and what can be done to prevent the infections, answers from many disciplines are sought: microbiology, epidemiology, medicine, engineering, and physics. There are many pathways to infection spread, and among the most significant from the epidemiological point of view...

journal_title：Indoor air

authors： Morawska L

更新日期：2006-10-01 00:00:00

abstract：UNLABELLED:With the capability to improve indoor air quality while simultaneously reducing energy demand, displacement ventilation is becoming popular. However, the numerical simulation of air distribution in an indoor space with displacement ventilation using computational fluid dynamics (CFD) is challenging because o...

journal_title：Indoor air

authors： Zhang TT,Lee K,Chen QY

更新日期：2009-06-01 00:00:00

abstract：:Indoor air quality (IAQ), as determined by the concentrations of indoor air pollutants, can be predicted using either physically based mechanistic models or statistical models that are driven by measured data. In comparison with mechanistic models mostly used in unoccupied or scenario-based environments, statistical m...

journal_title：Indoor air

authors： Wei W,Ramalho O,Malingre L,Sivanantham S,Little JC,Mandin C

更新日期：2019-09-01 00:00:00

abstract：UNLABELLED:A comparison study of novel collection methods for airborne bacteria and endotoxin was performed in an environmentally controlled chamber and in pilot-field studies. Airborne particulate matter was collected in swirling liquid impingers, air-monitoring filter cassettes, and with a micro-orifice uniform depos...

journal_title：Indoor air

authors： Kujundzic E,Hernandez M,Miller SL

更新日期：2006-06-01 00:00:00

abstract：:Despite evidence that airborne transmission contributes to influenza epidemics, limited knowledge of the infectiousness of human influenza cases hinders pandemic preparedness. We used airborne viral source strength and indoor CO2 monitoring from the largest human influenza challenge-transmission trial (EMIT: Evaluatin...

journal_title：Indoor air

authors： Bueno de Mesquita PJ,Noakes CJ,Milton DK

更新日期：2020-11-01 00:00:00

abstract：UNLABELLED:Young adult subjects who occupied a well-ventilated space with low background of level of ozone achieved via carbon-filtration could detect ozone odor at 7 ppb, lower than expected from archival compilations. The outcome was not inconsistent, however, with some observations of recognition, beyond mere detect...

journal_title：Indoor air

authors： Cain WS,Schmidt R,Wolkoff P

更新日期：2007-10-01 00:00:00

abstract：UNLABELLED:Electronic cigarette consumption ('vaping') is marketed as an alternative to conventional tobacco smoking. Technically, a mixture of chemicals containing carrier liquids, flavors, and optionally nicotine is vaporized and inhaled. The present study aims at the determination of the release of volatile organic ...

journal_title：Indoor air

authors： Schripp T,Markewitz D,Uhde E,Salthammer T

更新日期：2013-02-01 00:00:00

abstract：UNLABELLED:Indoor air organic compounds were continuously monitored during 3 years in new and older homes which were voluntarily selected throughout countries. The levels of volatile organic compounds (VOCs) in the new homes decreased markedly after 1 year, and steady emissions of VOCs were obtained in the initial mont...

journal_title：Indoor air

authors： Park JS,Ikeda K

更新日期：2006-04-01 00:00:00

abstract：:Energy-efficient building refurbishment has the aim of saving energy and thus reducing CO2 emissions. Increased energy efficiency of a building often implies reduced air exchange. Together with other indoor air quality problems, this may lead to an increase in indoor radon concentration (Rn-222). In order to investiga...

journal_title：Indoor air

authors： Meyer W

更新日期：2019-07-01 00:00:00

abstract：:Field measurements were collected through physical measurements and observations in the cities of Seoul, Korea; Eugene and Portland, Oregon; and Yokohama, Japan, during the fall, winter, and summer seasons from 2005 to 2006. A total of 1733 data sets were collected (Seoul - 713; Oregon - 807; Yokohama - 213) in variet...

journal_title：Indoor air

authors： Kim H,Chun C,Kwok A,Ota A,Tamura A

更新日期：2011-08-01 00:00:00

abstract：UNLABELLED:Continuous emission of unipolar ions has been shown to improve the performance of respirators and stationary filters challenged with non-biological particles. In this study, we investigated the ion-induced enhancement effect while challenging a low-efficiency heating, ventilation and air-conditioning (HVAC) ...

journal_title：Indoor air

authors： Huang R,Agranovski I,Pyankov O,Grinshpun S

更新日期：2008-04-01 00:00:00

abstract：:To investigate indoor environmental quality in classrooms, assessments were undertaken in a 'low allergen' school and three standard primary schools in Western Australia. Dust allergens, air pollutants and physical parameters were monitored in the four schools at four times (summer school term, autumn holiday, winter ...

journal_title：Indoor air

authors： Zhang G,Spickett J,Rumchev K,Lee AH,Stick S

更新日期：2006-02-01 00:00:00

abstract：:This paper reports the comparison of three measuring methods for quantifying the amount of dust on the inner surface of ventilation ducts: 1) a vacuum test method; 2) a gravimetric tape method; and 3) an optical method. Thirteen recently constructed buildings were selected for the field test in the Helsinki metropolit...

journal_title：Indoor air

authors： Holopainen R,Asikainen V,Pasanen P,Seppänen O

更新日期：2002-03-01 00:00:00

abstract：UNLABELLED:Previous studies have found inconsistent results on the association between asthma in children and gas cooking emissions. We aimed to assess the effects of the long-term exposure to gas cooking on the onset of asthma and respiratory symptoms, focusing on wheezing, in children from two German birth cohorts: L...

journal_title：Indoor air

authors： Casas L,Tischer C,Tiesler C,Brüske I,Koletzko S,Bauer CP,Wichmann HE,von Berg A,Berdel D,Krämer U,Schaaf B,Lehmann I,Herbarth O,Heinrich J,GINIplus and LISAplus Study Group.

更新日期：2012-12-01 00:00:00

abstract：:Thermal stratification is established when warmer air rises and cooler air descends under thermal buoyancy. It occurs in indoor environment situations including large warehouse-type buildings, buoyancy-driven ventilated spaces with displacement, underfloor ventilation, and/or natural ventilation, and enclosure fires w...

journal_title：Indoor air

authors： Wang LL,Zhang X,Qi D

更新日期：2019-03-01 00:00:00

abstract：UNLABELLED:A cross-sectional study was carried out at Tianjin University campus, China, from February 21 to June10, 2006, to survey the association between dampness in dorms and allergy and airways infection among college students. The health and dampness condition were self-reported by 3436 students living in 1511 dor...

journal_title：Indoor air

authors： Sun Y,Zhang Y,Sundell J,Fan Z,Bao L

更新日期：2009-04-01 00:00:00

abstract：UNLABELLED:  Ingestion of indoor dust has been acknowledged as an important route of exposure to organic contaminants (OCs). We investigated the presence of polybrominated diphenyl ethers (PBDEs), novel brominated flame retardants (NBFRs), organophosphate flame retardants (OPFRs), polychlorinated biphenyls (PCBs), and ...

journal_title：Indoor air

authors： Ali N,Van den Eede N,Dirtu AC,Neels H,Covaci A

更新日期：2012-06-01 00:00:00

abstract：:Cross-sectional studies have shown that exposure to indoor moisture damage and mold may be associated with subclinical inflammation. Our aim was to determine whether early age exposure to moisture damage or mold is prospectively associated with subclinical systemic inflammation or with immune responsiveness in later c...

journal_title：Indoor air

authors： Karvonen AM,Tischer C,Kirjavainen PV,Roponen M,Hyvärinen A,Illi S,Mustonen K,Pfefferle PI,Renz H,Remes S,Schaub B,von Mutius E,Pekkanen J

更新日期：2018-05-01 00:00:00

abstract：:We report results of analysis of a month-long measurement of indoor air and environment quality parameters in one gym during sporting activities such as football, basketball, volleyball, badminton, boxing, and fitness. We have determined an average single person's contribution to the increase of temperature, humidity,...

journal_title：Indoor air

authors： Žitnik M,Bučar K,Hiti B,Barba Ž,Rupnik Z,Založnik A,Žitnik E,Rodrìguez L,Mihevc I,Žibert J

更新日期：2016-06-01 00:00:00

abstract：:Evidence is accumulating that indoor dampness and mold are associated with the development of asthma. The underlying mechanisms remain unknown. New Zealand has high rates of both asthma and indoor mold and is ideally placed to investigate this. We conducted an incident case-control study involving 150 children with ne...

journal_title：Indoor air

authors： Shorter C,Crane J,Pierse N,Barnes P,Kang J,Wickens K,Douwes J,Stanley T,Täubel M,Hyvärinen A,Howden-Chapman P,Wellington Region General Practitioner Research Network.

更新日期：2018-01-01 00:00:00

abstract：:A significant number of consumer goods and building materials can act as emission sources of flame retardants (FRs) in the indoor environment. We investigate the relationship between the emission source strength and the levels of 19 brominated flame retardants (BFRs) and seven organophosphate flame retardants (OPFRs) ...

journal_title：Indoor air

authors： Liagkouridis I,Cequier E,Lazarov B,Palm Cousins A,Thomsen C,Stranger M,Cousins IT

更新日期：2017-05-01 00:00:00

abstract：UNLABELLED:A field survey of occupants' response to the indoor environment in 10 office buildings with displacement ventilation was performed. The response of 227 occupants was analyzed. About 24% of the occupants in the survey complained that they were daily bothered by draught, mainly at the lower leg. Vertical air t...

journal_title：Indoor air

authors： Melikov A,Pitchurov G,Naydenov K,Langkilde G

更新日期：2005-06-01 00:00:00

abstract：UNLABELLED:Ventilation performance and pollutant distribution in a traditional ceiling-type ventilation system, a top-return (TR)-type and a floor-return (FR)-type underfloor ventilation systems were performed in a controlled experimental room. Tracer gas method was utilized to determine the age of air and the contamin...

journal_title：Indoor air

authors： Chao CY,Wan MP

更新日期：2004-10-01 00:00:00

abstract：:This paper characterizes the relationship between occupant activities and indoor air particulate levels in a non-smoking office building. Occupant activities were recorded on video. Particulate concentrations were monitored by three optical particle counters (OPCs) in five size ranges at three heights. Particulate mas...

journal_title：Indoor air

authors： Luoma M,Batterman SA

更新日期：2001-03-01 00:00:00

abstract：:Although the ubiquitous detection of polybrominated diphenyl ether (PBDE) and organophosphate flame retardants (PFRs) in indoor dust has raised health concerns, only very few epidemiological studies have assessed their impact on human health. Inhalation of dust is one of the exposure routes of FRs, especially in child...

journal_title：Indoor air

authors： Canbaz D,van Velzen MJ,Hallner E,Zwinderman AH,Wickman M,Leonards PE,van Ree R,van Rijt LS

更新日期：2016-06-01 00:00:00

abstract：UNLABELLED:Fumes produced during frying have been implicated as a potential cause for the increased incidence of adenocarcinoma. Particulate matter exposure has also been linked with other pulmonary and coronary disease. This study investigated the contribution of frying in residential settings to ultrafine and fine pa...

journal_title：Indoor air

authors： Evans GJ,Peers A,Sabaliauskas K

更新日期：2008-12-01 00:00:00

abstract：:This study aimed to better understand and quantify the influence of ventilation strategies on occupant-related indoor air chemistry. The oxidation of human skin oil constituents was studied in a continuously ventilated climate chamber at two air exchange rates (1 h-1 and 3 h-1 ) and two initial ozone mixing ratios (30...

journal_title：Indoor air

authors： Salvador CM,Bekö G,Weschler CJ,Morrison G,Le Breton M,Hallquist M,Ekberg L,Langer S

更新日期：2019-11-01 00:00:00

abstract：UNLABELLED:This study examined five schools with different ventilation systems in both urban and rural areas in South Texas. Total particle number concentration, ultrafine particle (UFP, diameter < 100 nm) size distribution, PM(2.5) , and CO(2) were measured simultaneously inside and outside of various school microenvi...

journal_title：Indoor air

authors： Zhang Q,Zhu Y

更新日期：2012-02-01 00:00:00

abstract：:The indoor environmental quality in classrooms can largely affect children's daily exposure to indoor chemicals in schools. To date, there has not been a comprehensive study of the concentrations of semivolatile organic compounds (SVOCs) in French schools. Therefore, the French Observatory for Indoor Air Quality (OQAI...

journal_title：Indoor air

authors： Wei W,Dassonville C,Sivanantham S,Gregoire A,Mercier F,Le Bot B,Malingre L,Ramalho O,Derbez M,Mandin C

更新日期：2021-01-01 00:00:00