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vacuum cleaners, etc ; air; dust; fabrics; humans; humidity; lifestyle; phthalates; summer; temperature; traffic; winter; China; Show all 13 Subjects
Abstract:
... Exposure to phthalates poses adverse health impacts to human beings. In this study, we analyzed 7 phthalates in dust samples, which were collected with vacuum cleaner from 40 to 31 residences in Beijing in summer and winter, respectively. The major phthalates (median concentration in the summer and winter, respectively) were DiBP (55 and 40 ng/mg), DnBP (99 and 30 ng/mg) and DEHP (795 and 335 ng/m ...
cleaners, etc ; area; cleaning; clothing; design; emissions; environmental economics; filters; home-based businesses; small farms; small-scale farming; technology; Show all 12 Subjects
Abstract:
... Emission damages caused by small-scale polluters such as farms, vehicles, homes and small businesses are often location-specific and such polluters are often regulated through a combination of location-differentiated cleaner technology standards and uniform, ʻdirtyʼ input regulation. We investigate how such regulations should be designed and combined under realistic assumptions. We find that if th ...
vacuum cleaners, etc ; Acinetobacter; Pseudomonas; Staphylococcus; aerosols; air; cotton; dust; environment; genes; hospitality industry; human health; inhalation exposure; liquids; particle size; spectrometers; Show all 16 Subjects
Abstract:
... Inhalation exposure to the resuspended biological particles from public places can cause adverse effects on human health. In this work, carpet dust samples were first collected from twenty example conference and hotel rooms by a vacuum cleaner. A bipedal robot was then used to simulate children's walking with three different shoes (cotton socks, PVC shoes and EVA shoes) in a hotel room. The partic ...
... The house dust mites (HDMs), defined here as members of the family Pyroglyphidae, are present just about everywhere in human dwellings and act as an important risk factor for allergic rhinitis (AR). They are a major perennial allergen source that causes AR. In the present study, 160 subjects clinically diagnosed with AR from the Department of Ear Nose Throat (ENT), Government Rajindra Medical Coll ...
Undarmaa Enkhbat; Enkhjargal Gombojav; Chimeglkham Banzrai; Sarangerel Batsukh; Buyantushig Boldbaatar; Enkhtuul Enkhtuya; David C. Bellinger; Bruce P. Lanphear; Lawrence C. McCandless; Ryan W. Allen
air cleaners, etc ; air; autism; caregivers; childhood; environment; particulates; pregnancy; randomized clinical trials; risk; Show all 10 Subjects
Abstract:
... Developmental exposure to airborne particulate matter (PM) may increase children’s risk of developing autism spectrum disorder. We quantified the impact of reducing PM exposure during pregnancy on the development of autistic traits in children. We also assessed associations between indoor fine PM (PM₂.₅) concentrations during pregnancy and autistic traits. In this parallel-group randomized control ...
air cleaners, etc ; aerosols; air; coagulation; cumulative exposure; environmental science; heat; heating systems; particulates; Show all 9 Subjects
Abstract:
... We spend most of our time in built environments. The cumulative exposure to particulate matter (PM) occurring in these built environments can potentially be comparable to or even exceed that occurring outdoors. Therefore, it is critical to understand the sources, dynamics, and fate of PM in built environments. This work focuses on aerosol dynamics modeling (including coagulation, deposition, and e ...
air cleaners, etc ; aerosols; environmental science; filtration; glass fibers; gravity; models; particle size; polypropylenes; polytetrafluoroethylene; technology; Show all 11 Subjects
Abstract:
... The following common filter materials were characterized and evaluated for filtration performance: glass fiber (GF), polytetrafluoroethylene (PTFE), and polypropylene (PP). The pressure drop of GF and PFFE was found to be approximately 500–600 Pa at 0.10 m/s face velocity, and the pressure drop for the PP is lower at only 30–80 Pa. The filtration efficiency of PTFE and GF was determined as 99.067% ...
... The direct difunctionalization of inexpensive and widely available alkenes has been recognized as a strong and straightforward tool for the rapid fabrication of complex molecules and pharmaceutical targets by introducing two different functional groups on adjacent carbon atoms of common alkene moieties in a single operation. This synthetic strategy avoids the purification and isolation of the inte ...
air cleaners, etc ; Escherichia coli; Staphylococcus aureus; aerosols; air; barns; economic sustainability; filtration; microbial load; photocatalysis; pollution; research; Show all 12 Subjects
Abstract:
... There is growing pressure to find technically feasible and economically viable solutions in reducing emissions of pollutants from various occupational settings to minimise environmental pollution. Hence, it is essential to develop and test methods for controlling pollutants from occupational backgrounds. We have tested an air cleaner device in reducing aerosol numbers by filtration and airborne ba ...
vacuum cleaners, etc ; blenders; household equipment; refrigerators; Show all 4 Subjects
Abstract:
... Fault diagnosis is the process of identifying and characterising a fault when a failure occurs. It is, therefore, an essential step to take before product-repair. In this study, we ask how conventional users diagnose faults in household appliances and how the design of these appliances facilitates or hampers the process of fault diagnosis.To investigate this we qualitatively analyse the content of ...
... Current assessments of human exposure to flame retardants (FRs) via dust ingestion rely on measurements of FR concentrations in dust samples collected at specific points in time and space. Such exposure assessments are rendered further uncertain by the possibility of within-room and within-building spatial and temporal variability, differences in dust particle size fraction analysed, as well as di ...
cleaners, etc ; accounting; business enterprises; case studies; cleaning; cost effectiveness; developmental stages; environmental management; information management; journals; management systems; Sri Lanka; Show all 12 Subjects
Abstract:
... Despite the popularity of environmental management accounting as an approach to support corporate cleaner production measures, so far, how the environmental management accounting implementation differs according to the stage of cleaner production strategy development is largely unknown. This study thus sought to identify how the uses of environmental management accounting and information character ...
vacuum cleaners, etc ; circular economy; consumer attitudes; consumers (people); mobile telephones; product labeling; recycling; surveys; willingness to pay; United Kingdom; Show all 10 Subjects
Abstract:
... While existing research has probed consumer responses to products of different recirculation pathways (recycling, reuse, refurbishment, etc), little work has examined consumer responses to an explicit “circular economy” product label or how willingness to pay is influenced by a continuum of circularity levels. This paper reports on the results of an online survey experiment that tests whether cust ...
air cleaners, etc ; air; ambient temperature; catalysts; chemical precipitation; dehydrogenation; electron transfer; environmental science; formaldehyde; formates; goethite; guidelines; oxidation; oxygen; thermodynamics; Show all 15 Subjects
Abstract:
... Herein, we tailored a series of ultrathin MnO₂ nanolayers coated on the surface of commercial goethite (α-FeOOH) by a facile in situ chemical precipitation method. α-FeOOH inhibited the MnO₂ crystal growth via the incorporation of K⁺ ions between MnO₂ and α-FeOOH interfaces during the synthesis process. The hybrid design of MnO₂ with an ultrathin nanolayer structure could reduce the electron trans ...
air cleaners, etc ; air; bioaerosols; environment; summer; winter; China; Show all 7 Subjects
Abstract:
... This work quantitatively investigated the concentration relationships between indoor and outdoor bioaerosols in residence. We measured bacteria and fungi from air in 28 residential homes throughout Nanjing, southeast China during summer and winter. The culture-based method was applied and the ratios of indoor to outdoor concentrations, expressed in I/O, were calculated. Results revealed that conce ...
Yukiko Nishihama; Chau-Ren Jung; Shoji F. Nakayama; Kenji Tamura; Tomohiko Isobe; Takehiro Michikawa; Miyuki Iwai-Shimada; Yayoi Kobayashi; Makiko Sekiyama; Yu Taniguchi; Shin Yamazaki; the Japan Environment and Children’s Study Group
air cleaners, etc ; Japan; acetaldehyde; air quality; algorithms; benzene; humidity; morbidity; mortality; nitrogen dioxide; ozone; particulates; prediction; regression analysis; research; smoke; temperature; Show all 17 Subjects
Abstract:
... Exposure to particulate matter (PM) is one of the important risk factors for morbidity and mortality. Although PM concentrations have been assessed using air quality monitoring stations or modelling, few studies have measured indoor PM in large-scale birth cohorts. The Japan Environment and Children's Study (JECS) measured indoor and outdoor air quality in approximately 5000 households when the pa ...
air cleaners, etc ; air; air pollution; carbon; carbon dioxide; cognition; confidence interval; environment; humidity; metropolitan areas; randomized clinical trials; temperature; youth; Spain; Show all 14 Subjects
Abstract:
... The recent evidence of the short-term impact of air pollution on youth cognitive functions is based primarily on observational studies. We conducted a randomized controlled trial to assess whether purifying the air of the classrooms produced short-term changes in attention processes of adolescents. We recruited a total of 2,123 adolescents (13–16 years old) in 33 high schools in Barcelona metropol ...
air cleaners, etc ; COVID-19 infection; Severe acute respiratory syndrome coronavirus 2; air; air pollution; economic development; environment; fossil fuels; pandemic; particulates; pollution control; Nepal; Show all 12 Subjects
Abstract:
... The 2019 Novel Coronavirus SARS-CoV 2 (COVID-19¹1COVID-19: 2019 Novel Coronavirus SARS-CoV 2, PM₂.₅: particulate matter with diameter smaller than 2.5 mg; BAM: Beta attenuation monitor, RAC: room air cleaner.) pandemic has severely impacted global health, safety, economic development and diplomacy. The government of Nepal issued a lockdown order in the Kathmandu Valley for 80 days from 24 March to ...
vacuum cleaners, etc ; air; air quality; blood; childhood; coal; combustion; dust; environment; gasoline; prices; soil; solid wastes; urban areas; waste incineration; wind speed; China; Show all 17 Subjects
Abstract:
... Household dust has been considered as an important pathway for children's environmental Pb exposure. Shanghai was one of the first cities in China that removed Pb from petrol and has been shown in our previous study to have the lowest childhood blood Pb levels in China. This study therefore examines household dust Pb (Pbᴴᴰ) in Shanghai in order to determine the extent and exposure risks of Pbᴴᴰ. H ...
air cleaners, etc ; Burkholderia; Hyphomicrobium; biodegradation; biofilm; bioreactors; hydrophilicity; hydrophobicity; inoculum; mass transfer; mathematical models; methanol; microbial communities; oils; silicone; toluene; volatile organic compounds; Show all 17 Subjects
Abstract:
... Negative interactions of the components usually restrict the application of trickling bioreactors (TBRs) for the simultaneous biodegradation of multi volatile organic compounds (VOCs). Modifications like the addition of non-aqueous phase (NAP) to TBRs can lead to design higher performance biological air cleaner systems for industries with mixed VOCs emissions. In this study, removal of toluene and ...