The Experts below are selected from a list of 726 Experts worldwide ranked by ideXlab platform
Jan Sundell - One of the best experts on this subject based on the ideXlab platform.
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Odors and Sensations of Humidity and Dryness in Relation to Sick Building Syndrome and Home Environment in Chongqing, China
2016Co-Authors: Juan Wang, Qin Yang, Han Wang, Dan Norback, Jan SundellAbstract:The prevalence of perceptions of Odors and sensations of air humidity and sick building syndrome symptoms in domestic environments were studied using responses to a questionnaire on the home environment. Parents of 4530 1–8 year old children from randomly selected kindergartens in Chongqing, China participated. Stuffy Odor, unpleasant Odor, Pungent Odor, mold Odor, tobacco smoke Odor, humid air and dry air in the last three month (weekly or sometimes) was reported by 31.4%, 26.5%, 16.1%, 10.6%, 33.0%, 32.1 % and 37.2 % of the parents, respectively. The prevalence of parents ’ SBS symptoms (weekly or sometimes) were: 78.7 % for general symptoms, 74.3 % for mucosal symptoms and 47.5 % for skin symptoms. Multi-nominal regression analyses for associations between Odors/sensations of air humidity and SBS symptoms showed that the odds ratio for ‘‘weekly’ ’ SBS symptoms were consistently higher than for ‘‘sometimes’ ’ SBS symptoms. Living near a main road or highway, redecoration, and new furniture were risk factors for perceptions of Odors and sensations of humid air and dry air. Dampness related problems (mold spots, damp stains, water damage and condensation) were all risk factors for perceptions of Odors and sensations of humid air and dry air, as was the presence of cockroaches, rats, and mosquitoes/ flies, use of mosquito-repellent incense and incense. Protective factors included cleaning the child’s bedroom every day and frequently exposing bedding to sunshine. In conclusion, adults ’ perceptions of Odors and sensations of humid air and dry ai
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Associations between Parents’ Perceived Air Quality in Homes and Health among Children in Nanjing, China
2016Co-Authors: Hua Qian, Xiaohong Zheng, Min Zhang, Louise Weschler, Jan SundellAbstract:The increasing prevalence of respiratory diseases in Chinese children has focused attention on indoor environmental quality. We investigated associations between perceived air quality in domestic environments and children’s allergic diseases with a questionnaire survey study. A total of 4017 children aged 1–8 years old from 23 kindergartens in urban, suburban and industrial areas in Nanjing were randomly recruited for this study. Parents’ perceived Odors, including stuffy Odor, unpleasant Odor, Pungent Odor, moldy Odor, humid air and dry air were found to be associated with asthma, wheeze, dry cough and rhinitis (P < 0.05). Both perceived dry and humid air were found to be positively associated with dampness indices, and we present evidence that the sensation of dryness may not be due to the actual indoor relative humidity, but rather to indoor air irritants. Parents’ perception of Odors and relative humidity may be indicators of environment pollutants, which are likely the real factors associated with children’s allergic diseases.
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Odors and sensations of humidity and dryness in relation to sick building syndrome and home environment in chongqing china
PLOS ONE, 2013Co-Authors: Juan Wang, Qin Yang, Han Wang, Dan Norback, Jan SundellAbstract:The prevalence of perceptions of Odors and sensations of air humidity and sick building syndrome symptoms in domestic environments were studied using responses to a questionnaire on the home environment. Parents of 4530 1–8 year old children from randomly selected kindergartens in Chongqing, China participated. Stuffy Odor, unpleasant Odor, Pungent Odor, mold Odor, tobacco smoke Odor, humid air and dry air in the last three month (weekly or sometimes) was reported by 31.4%, 26.5%, 16.1%, 10.6%, 33.0%, 32.1% and 37.2% of the parents, respectively. The prevalence of parents’ SBS symptoms (weekly or sometimes) were: 78.7% for general symptoms, 74.3% for mucosal symptoms and 47.5% for skin symptoms. Multi-nominal regression analyses for associations between Odors/sensations of air humidity and SBS symptoms showed that the odds ratio for “weekly” SBS symptoms were consistently higher than for “sometimes” SBS symptoms. Living near a main road or highway, redecoration, and new furniture were risk factors for perceptions of Odors and sensations of humid air and dry air. Dampness related problems (mold spots, damp stains, water damage and condensation) were all risk factors for perceptions of Odors and sensations of humid air and dry air, as was the presence of cockroaches, rats, and mosquitoes/flies, use of mosquito-repellent incense and incense. Protective factors included cleaning the child’s bedroom every day and frequently exposing bedding to sunshine. In conclusion, adults’ perceptions of Odors and sensations of humid air and dry air are related to factors of the home environment and SBS symptoms are related to Odor perceptions.
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Association between SBS symptoms (weekly or sometimes) and Continuous OH-score (as a continuous variable, range from 0–7) (n = 4530).
2013Co-Authors: Juan Wang, Qin Yang, Han Wang, Dan Norback, Jan SundellAbstract:aAdjusted for parents’ gender, parents’ history of asthma, allergic rhinitis or eczema and current smoker by logistic regression analyses. OR expressed for one unit change of the Continuous OH-score.Continuous OH-score: by adding the number of yes response (weekly or sometimes) to the following Odor and humidity perceptions: (1) Stuffy Odor; (2) Unpleasant Odor; (3) Pungent Odor; (4) Mold Odor; (5) Tobacco smoke Odor; (6) Humid air; (7) Dry air.
Gérard Brand - One of the best experts on this subject based on the ideXlab platform.
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Comparative Fear-Related Behaviors to Predator Odors (TMT and Natural Fox Feces) before and after Intranasal ZnSO(4) Treatment in Mice.
Frontiers in Behavioral Neuroscience, 2010Co-Authors: Romain Hacquemand, Laurence Jacquot, Gérard BrandAbstract:The possibility that synthetic 2,4,5-trimethylthiazoline (TMT), frequently used to induce unconditioned fear in rodents, could be more a Pungent Odor activating intranasal trigeminal nerve fibers rather than a predator Odor index is currently discussed. In order to explore this question, the present study compared fear-related behaviors to predator Odors (synthetic 10% TMT and natural fox feces) and toluene (as an irritant compound without ecological significance) before and after intranasal ZnSO(4) perfusion which is known to provoke transient anosmia. Results show that natural fox feces could be consider as a pure olfactory (CN I) nerve stimulant while 10% TMT appeared to be a mixed olfactory (CN I) and trigeminal (CN V) nerves stimulant with a great olfactory power and a low trigeminal power. These findings suggest that behavioral neuroscience studies should use concentrations lower than 10% TMT to obtain fear-related behaviors similar to those obtained with natural fox feces Odor.
Juan Wang - One of the best experts on this subject based on the ideXlab platform.
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Odors and Sensations of Humidity and Dryness in Relation to Sick Building Syndrome and Home Environment in Chongqing, China
2016Co-Authors: Juan Wang, Qin Yang, Han Wang, Dan Norback, Jan SundellAbstract:The prevalence of perceptions of Odors and sensations of air humidity and sick building syndrome symptoms in domestic environments were studied using responses to a questionnaire on the home environment. Parents of 4530 1–8 year old children from randomly selected kindergartens in Chongqing, China participated. Stuffy Odor, unpleasant Odor, Pungent Odor, mold Odor, tobacco smoke Odor, humid air and dry air in the last three month (weekly or sometimes) was reported by 31.4%, 26.5%, 16.1%, 10.6%, 33.0%, 32.1 % and 37.2 % of the parents, respectively. The prevalence of parents ’ SBS symptoms (weekly or sometimes) were: 78.7 % for general symptoms, 74.3 % for mucosal symptoms and 47.5 % for skin symptoms. Multi-nominal regression analyses for associations between Odors/sensations of air humidity and SBS symptoms showed that the odds ratio for ‘‘weekly’ ’ SBS symptoms were consistently higher than for ‘‘sometimes’ ’ SBS symptoms. Living near a main road or highway, redecoration, and new furniture were risk factors for perceptions of Odors and sensations of humid air and dry air. Dampness related problems (mold spots, damp stains, water damage and condensation) were all risk factors for perceptions of Odors and sensations of humid air and dry air, as was the presence of cockroaches, rats, and mosquitoes/ flies, use of mosquito-repellent incense and incense. Protective factors included cleaning the child’s bedroom every day and frequently exposing bedding to sunshine. In conclusion, adults ’ perceptions of Odors and sensations of humid air and dry ai
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Odors and sensations of humidity and dryness in relation to sick building syndrome and home environment in chongqing china
PLOS ONE, 2013Co-Authors: Juan Wang, Qin Yang, Han Wang, Dan Norback, Jan SundellAbstract:The prevalence of perceptions of Odors and sensations of air humidity and sick building syndrome symptoms in domestic environments were studied using responses to a questionnaire on the home environment. Parents of 4530 1–8 year old children from randomly selected kindergartens in Chongqing, China participated. Stuffy Odor, unpleasant Odor, Pungent Odor, mold Odor, tobacco smoke Odor, humid air and dry air in the last three month (weekly or sometimes) was reported by 31.4%, 26.5%, 16.1%, 10.6%, 33.0%, 32.1% and 37.2% of the parents, respectively. The prevalence of parents’ SBS symptoms (weekly or sometimes) were: 78.7% for general symptoms, 74.3% for mucosal symptoms and 47.5% for skin symptoms. Multi-nominal regression analyses for associations between Odors/sensations of air humidity and SBS symptoms showed that the odds ratio for “weekly” SBS symptoms were consistently higher than for “sometimes” SBS symptoms. Living near a main road or highway, redecoration, and new furniture were risk factors for perceptions of Odors and sensations of humid air and dry air. Dampness related problems (mold spots, damp stains, water damage and condensation) were all risk factors for perceptions of Odors and sensations of humid air and dry air, as was the presence of cockroaches, rats, and mosquitoes/flies, use of mosquito-repellent incense and incense. Protective factors included cleaning the child’s bedroom every day and frequently exposing bedding to sunshine. In conclusion, adults’ perceptions of Odors and sensations of humid air and dry air are related to factors of the home environment and SBS symptoms are related to Odor perceptions.
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Association between SBS symptoms (weekly or sometimes) and Continuous OH-score (as a continuous variable, range from 0–7) (n = 4530).
2013Co-Authors: Juan Wang, Qin Yang, Han Wang, Dan Norback, Jan SundellAbstract:aAdjusted for parents’ gender, parents’ history of asthma, allergic rhinitis or eczema and current smoker by logistic regression analyses. OR expressed for one unit change of the Continuous OH-score.Continuous OH-score: by adding the number of yes response (weekly or sometimes) to the following Odor and humidity perceptions: (1) Stuffy Odor; (2) Unpleasant Odor; (3) Pungent Odor; (4) Mold Odor; (5) Tobacco smoke Odor; (6) Humid air; (7) Dry air.
Hua Yao Li - One of the best experts on this subject based on the ideXlab platform.
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flexible room temperature nh3 sensor for ultrasensitive selective and humidity independent gas detection
ACS Applied Materials & Interfaces, 2018Co-Authors: Hua Yao LiAbstract:Ammonia (NH3) is an irritant gas with a unique Pungent Odor; sub-parts per million-level breath ammonia is a medical biomarker for kidney disorders and Helicobacter pylori bacteria-induced stomach infections. The humidity varies in both ambient environment and exhaled breath, and thus humidity dependence of gas-sensing characteristics is a great obstacle for real-time applications. Herein, flexible, humidity-independent, and room-temperature ammonia sensors are fabricated by the thermal evaporation of CuBr on a polyimide substrate and subsequent coating of a nanoscale moisture-blocking CeO2 overlayer by electron-beam evaporation. CuBr sensors coated with a 100 nm-thick CeO2 overlayer exhibits an ultrahigh response (resistance ratio) of 68 toward 5 ppm ammonia with excellent gas selectivity, rapid response, reversibility, and humidity-independent sensing characteristics at room temperature. In addition, the sensing performance remains stable after repetitive bending and long-term operation. Moreover, the s...
Romain Hacquemand - One of the best experts on this subject based on the ideXlab platform.
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Comparative Fear-Related Behaviors to Predator Odors (TMT and Natural Fox Feces) before and after Intranasal ZnSO(4) Treatment in Mice.
Frontiers in Behavioral Neuroscience, 2010Co-Authors: Romain Hacquemand, Laurence Jacquot, Gérard BrandAbstract:The possibility that synthetic 2,4,5-trimethylthiazoline (TMT), frequently used to induce unconditioned fear in rodents, could be more a Pungent Odor activating intranasal trigeminal nerve fibers rather than a predator Odor index is currently discussed. In order to explore this question, the present study compared fear-related behaviors to predator Odors (synthetic 10% TMT and natural fox feces) and toluene (as an irritant compound without ecological significance) before and after intranasal ZnSO(4) perfusion which is known to provoke transient anosmia. Results show that natural fox feces could be consider as a pure olfactory (CN I) nerve stimulant while 10% TMT appeared to be a mixed olfactory (CN I) and trigeminal (CN V) nerves stimulant with a great olfactory power and a low trigeminal power. These findings suggest that behavioral neuroscience studies should use concentrations lower than 10% TMT to obtain fear-related behaviors similar to those obtained with natural fox feces Odor.
