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Dissertations / Theses on the topic 'Air exhalé'

Author: Grafiati

Published: 22 June 2024

Last updated: 31 July 2025

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1

Akiki, Maria. "Identification et quantification des concentrations en espèces gazeuses à l’état de trace dans l’air exhalé des patients hémodialysés : enjeux technologiques et perspectives d’utilisations cliniques." Electronic Thesis or Diss., Ecole nationale supérieure Mines-Télécom Lille Douai, 2022. http://www.theses.fr/2022MTLD0014.

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La maladie rénale chronique se caractérise par une diminution progressive des fonctions rénales. Elle est cliniquement silencieuse jusqu’à un stade avancé. Au stade ultime de cette pathologie (insuffisance rénale chronique terminale), il est nécessaire de mettre en œuvre une suppléance rénale par dialyse, ou de réaliser une transplantation rénale. Le dépistage de cette pathologie est effectué par des tests sanguins et urinaires. Cependant, ce dépistage reste insuffisamment réalisé et la maladie rénale chronique est souvent découverte de manière trop tardive. Pour améliorer l’acceptabilité d’un

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2

Kornobis-Chérot, Nathalie. "Évaluation méthodologique et clinique des marqueurs de l’atteinte pulmonaire dans l’air exhalé : comparaison de sujets présentant une pathologie respiratoire chronique et sujets témoins." Thesis, Lille 2, 2012. http://www.theses.fr/2012LIL2S013/document.

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Un accès direct et non invasif à la pathogénèse par l’évaluation de biomarqueurs volatils (FeNO) ou non volatils de l’air exhalé grâce à la méthode des condensats de l’air exhalé (EBC) est utile pour estimer précocement le degré d’atteinte pulmonaire en rapport avec une exposition professionnelle et surveiller son évolution en regard des mesures correctives mises en place. L’étude du NO exhalé (FeNO) est actuellement bien standardisée et l’augmentation exponentielle des publications concernant les EBC reflètent un intérêt croissant pour le diagnostic non invasif des atteintes pulmonaires. Les

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3

Giovannelli, Jonathan. "Description et déterminants de la santé respiratoire et cardiovasculaire dans deux communautés urbaines du Nord-Pas-de-Calais : l’enquête ELISABET 2011-2013." Thesis, Lille 2, 2015. http://www.theses.fr/2015LIL2S053/document.

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Introduction. L’Enquête Littoral Souffle Air Biologie Environnement (ELISABET) a pour objectif général l’étude de la santé respiratoire et cardiovasculaire dans les communautés urbaines de Lille (CUDL) et Dunkerque (CUD). Les objectifs spécifiques de cette thèse sont d’étudier : (i) la prévalence et le sous-diagnostic des troubles ventilatoires obstructifs (TVO), (ii) l’évolution de la prévalence des principaux facteurs de risque cardiovasculaire (FDRCV) dans la CUDL entre 1986 et 2013, (iii) les interactions entre deux biomarqueurs de l’asthme (fraction exhalée du monoxyde d’azote (FENO) et t

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4

Hemmingsson, Tryggve. "Exhaled nitric oxide in extreme environments." Stockholm : Karolinska institutet, 2009. http://diss.kib.ki.se/2009/978-91-7409-609-5/.

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5

Adisesh, Linganatha Anil. "Exhaled air nitric oxide and occupational exposure to organic dusts and endotoxin." Thesis, University of Manchester, 2003. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:86766.

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6

Monroy, Becky. "Signal Processing of Exhaled CO2 as Tracer Gas in Residential Ventilation Assessment." Scholarship @ Claremont, 2019. https://scholarship.claremont.edu/cmc_theses/2105.

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Background: Indoor air contaminants generally have a greater impact on health than outdoor air contaminants, which increases the importance of a dependable, accessible, and minimally impactful method for measuring indoor air exchange rates. Objective: Evaluate the use of naturally generated CO2 as a tool to measure indoor ventilation. Methods: Indoor CO2 levels were measured over seven sample intervals in an airtight one-bedroom apartment with two residents. High frequency noise was removed from the measurements with Fourier, Kalman, LOESS, and rolling average filters. Root-mean squared errors

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7

Decker, John Alan 1961. "A method to determine respirator protection factors using biological monitoring of exhaled air." Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/277331.

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The purpose of this study was to develop methodology involving the use of biological monitoring of exhaled air to determine respirator protection factors. The concentration of fluorocarbon 113 in breath was correlated to the original exposure concentration while wearing a full facepiece negative pressure respirator. Protection factors calculated from breath sampling were compared to fit factors derived from a negative pressure test device. Although biological monitoring indicated a nearly three fold increase in fluorocarbon 113 penetration rates compared to the negative pressure fit test resul

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8

Tkachuk, R. V. "Biomarkers of exhaled air condensate in children in the comorbid course of pneumonia with bronchobstructive syndrome." Thesis, БДМУ, 2021. http://dspace.bsmu.edu.ua:8080/xmlui/handle/123456789/19160.

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9

Barath, Stefan, Nicholas L. Mills, Ellinor Ädelroth, Anna-Carin Olin, and Anders Blomberg. "Diesel exhaust but not ozone increases fraction of exhaled nitric oxide in a randomized controlled experimental exposure study of healthy human subjects." Umeå universitet, Medicin, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-71312.

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Background: Fraction of exhaled nitric oxide (FENO) is a promising non-invasive index of airway inflammation that may be used to assess respiratory effects of air pollution. We evaluated FENO as a measure of airway inflammation after controlled exposure to diesel exhaust or ozone. Methods: Healthy volunteers were exposed to either diesel exhaust (particle concentration 300 mu g/m(3)) and filtered air for one hour, or ozone (300 ppb) and filtered air for 75 minutes. FENO was measured in duplicate at expiratory flow rates of 10, 50, 100 and 270 mL/s before, 6 and 24 hours after each exposure. Re

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10

Roquencourt, Camille. "Signal processing and analysis of PTR-TOF-MS data from exhaled breath for biomarker discovery." Electronic Thesis or Diss., université Paris-Saclay, 2022. http://www.theses.fr/2022UPASG024.

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L'analyse des composés organiques volatils (COVs) dans l'air expiré est une méthode non invasive prometteuse en médecine pour le diagnostic précoce, le phénotypage, le suivi de la maladie et du traitement et le dépistage à grande échelle. La spectrométrie de masse à temps de vol par réaction de transfert de protons (PTR-TOF-MS) présente un intérêt majeur pour l'analyse en temps réel des COVs et la découverte de nouveaux biomarqueurs. Le manque de méthodes et d'outils logiciels pour le traitement des données PTR-TOF-MS provenant de cohortes représente actuellement un verrou pour le développemen

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11

Kouremenos, Konstantinos A., Mikael Johansson, and Philip J. Marriott. "Advances in gas chromatographic methods for the identification of biomarkers in cancer." Umeå universitet, Institutionen för molekylärbiologi (Medicinska fakulteten), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-61275.

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Screening complex biological specimens such as exhaled air, tissue, blood and urine to identify biomarkers in different forms of cancer has become increasingly popular over the last decade, mainly due to new instruments and improved bioinformatics. However, despite some progress, the identification of biomarkers has shown to be a difficult task with few new biomarkers (excluding recent genetic markers) being considered for introduction to clinical analysis. This review describes recent advances in gas chromatographic methods for the identification of biomarkers in the detection, diagnosis and

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12

del, Portal Aquije Elka Blansh. "The Effects of Chewing Conditions, Texture Differences, and Pharyngeal Opening and Closing on Ethyl Butyrate Concentrations in Exhaled Air and Perceived Flavor Intensity." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1471268342.

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13

Åberg, Anna-Maja. "Carbon monoxide in biological systems : An experimental and clinical study." Doctoral thesis, Umeå universitet, Kirurgisk och perioperativ vetenskap, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1427.

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Background: Carbon monoxide (CO) is a toxic gas, but it is also produced endogenously when haem is degraded. When produced in vivo, CO is believed to have positive biological effects. For example it activates the production of cyclic guanosine mono-phosphate and causes vasodilatation. CO is also believed to have anti-inflammatory properties by binding to Mitogen activated protein (MAP) kinase. Several studies in cells, mice and rats support this opinion regarding both the circulatory as well as the anti-inflammatory properties. However, studies in larger animals regarding circulatory effects h

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14

Hersen, Guillaume. "Étude de l'aérobiocontamination virale des espaces clos : cas du virus respiratoire syncytial." Thesis, Paris Est, 2009. http://www.theses.fr/2009PEST0001.

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Le Virus Respiratoire Syncytial (VRS) est une des causes les plus fréquentes d'infections respiratoires chez l'enfant. Actuellement les mécanismes de transmission, notamment la part des aérosols, ne sont pas connus. Dans ce contexte, l'objectif de ce travail a porté sur l'étude de l'aérobiocontamination virale des espaces clos. Ainsi, cette recherche a concerné l'étude en laboratoire de l'infectivité du VRS sous forme d'aérosols, la caractérisation des émissions trachéobronchiques ainsi que la recherche d'aérosols de VRS dans différents environnements intérieurs. L'étude d'un aérosol de Virus

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15

Alves, Andressa Guariento Ferreira. "Influência da poluição do ar na inflamação das vias aéreas e na atividade de doença de pacientes com lúpus eritematoso sistêmico juvenil." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/5/5141/tde-07112018-112050/.

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Lúpus eritematoso sistêmico juvenil é uma doença inflamatória autoimune multifatorial com elevação de citocinas inflamatórias e com gravidade variável. Estudos observaram associação entre exposição a poluição do ar e aumento do número de internações hospitalares devido à exacerbação das doenças reumáticas pediátricas e aumento no risco de crianças portadoras de lúpus eritematoso sistêmico juvenil apresentarem atividade de doença moderada /grave após exposição a material particulado e dióxido de nitrogênio. Exposição à poluição do ar pode acarretar agravo agudo em doenças reumatológicas pediátr

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16

Chen, Pei-Jung, and 陳沛蓉. "Volatile Organic Compounds in Exhaled Air of Asthma Children." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/54369099394548642768.

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碩士<br>國立臺灣大學<br>環境衛生研究所<br>93<br>The objective of this study was to clarify the differences of volatile organic compounds (VOCs) in exhaled air between the asthmatic children and the non-asthmatic children. This article also discusses the correlation between the VOCs and several different indoor environments with questionnaire and statistics. This was a cross-sectional study and purposive selection was taken. All cases came from the out-patient departments of pediatrics and ophthalmology of a medical center in northern Taiwan. There were 60 children total and the range of age was from 4 to 1

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17

Mei-Ching, Wu, and 吳美靜. "Develope Exhaled Air Sampling as Biological Monitoring in Benzene Exposure." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/72781175930106323389.

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18

Wei, Yun-Chen, and 魏筠蓁. "Volatile Organic Compounds in Exhaled Air of Furniture Sales Department Clerks." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/25582835664034184782.

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碩士<br>國立臺灣大學<br>環境衛生研究所<br>93<br>This study was aimed to analyze volatile organic compounds (VOCs) in exhaled air of furniture sales department clerks, and to observe the variation of VOCs from occupational exposure. In addition to exhaled air VOCs, formaldehyde and VOCs in the environmental air were also measured, and there relationship together with items in the questionnaire were discussed. The study design was a cross-section study. The furniture sales department clerks were divided into common furniture sales department clerks and systematic furniture sales department clerks. Seventy-four

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19

Hsieh, Chun-Fa, and 謝泉發. "Effect of Air Pollution on Exhaled Nitric Oxide Levels in Schoolchildren." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/27888139108348174361.

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碩士<br>國立陽明大學<br>公共衛生研究所<br>87<br>Asthma is a chronic inflammatory disease of the airway. Recently, studies have found that exhaled nitric oxide (eNO) was correlated with airway inflammation. We used eNO measurement and questionnaire to clarify the effect of air pollution on asthma and airway disease in schoolchildren. Our study subjects were third grade students from 石牌國小 in Taipei and 淡水國小 in Tamshui. We recruited 256 students (male: 133, female: 123) from the two schools. Study was performed between October 1998 and Apr 1999. The effect of children''s atopy or airway disease on eNO, and the

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20

Fang, Chun-Yu, and 方俊淯. "A Study of the Associations Between Air Pollutants Exposure and Exhaled Nitric Oxide / Exhaled Breath Condensate pH in Schoolchildren with Asthma." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/8236x7.

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碩士<br>輔仁大學<br>公共衛生學系碩士班<br>96<br>Background： According to the epidemiological studies, it demonstrated that the prevalence and incidence rate of asthma were increasing gradually every year. People spent over 80 % of their time indoors. Indoor and outdoor air pollutants such as particular matter（PM）, volatile organic compounds（VOCs）, sulfur dioxide（SO2）, ozone（O3）had been proved to be significantly correlated with the increased incidence of respiratory symptoms in asthmatic children. Collection of exhaled gas was a simple and noninvasive technique for sampling of nitric oxide（NO）and air

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21

Chen, Yung-Kang, and 陳泳鋼. "Effects of Air Pollution on School Children in Exhaled Breath and Lung Function." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/89080231455567297794.

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碩士<br>國立臺灣大學<br>環境衛生研究所<br>98<br>Expose to air pollution has been associated with eye and respiratory system irritation, allergic and inflamed effects and cardiovascular disease. These symptoms were observable in susceptible groups. In Taipei metropolis, the asthma incidence rate rise yearly in schoolchildren. Therefore, the objective of this study was to investigate exhaled breath VOCs and lung function relevance of the air pollution in asthmatic children. Besides, the lag effect of exposure to particulate matter would also be studied. The study divided participants into asthmatic and non

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22

Chen, Shu-Hui, and 陳淑慧. "Toluene, xylene and ethylbenzene exposure of gasoline station workers and their exhaled air monitoring." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/48814366708746983863.

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碩士<br>國立陽明大學<br>公共衛生研究所<br>88<br>Toluene, xylene and ethylbenzene, three major components in gasoline, are important volatile organic compounds in gasoline station and have been proved as adverse health effects to human. Ten gasoline stations (public and private) in Taipei were randomly selected for study. We investigated the air borne concentrations of toluene, xylene and ethylbenzene of the target stations and the workers’ personal exposure level. Alveolar breath samples of the gasoline station workers after their work shifts were also determined. The samples were analyzed by GC/FID.

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23

Lin, Yan-Che, and 林延澤. "Detection of Enterovirus in Human Exhaled Air and Transmission of Enterovirus in Family and School." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/y78gq8.

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碩士<br>高雄醫學大學<br>公共衛生學研究所<br>102<br>Background: Enterovirus infection is a common source of disease in children and infants and cause HFMD and herpangina outbreaks around the world. Enterovirus infection is usually transmitted via fecal-oral route or airborne route. Previous study had already detected enterovirus in exhaled air and indoor air of hospital. Intrafamilial and kindergarten transmissions were major modes of enterovirus transmission. However, no study evaluated concentration of enterovirus in exhaled air in household members and air samples of household and school. Aim: Detection of

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24

Lin, Kuan-Yu, and 林冠宇. "Exhaled Air Volatile Organic Compounds Detection as an Index in Environmental Health － A Feasibility Study." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/67504637599520668260.

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碩士<br>國立臺灣大學<br>環境衛生研究所<br>92<br>This study was aimed to utilize the equipment in being to detect volatile organic compounds (VOCs) in exhaled air and apply it in environmental health. VOCs collected from smokers’ and nonsmokers’ exhaled air were identified and compared. The VOCs’ patterns in smokers’ exhaled air before and after smoking were observed. This study employed sampling bags to collect exhaled air and used multi-bed sorbent traps and sampling pump to concentrate VOCs. The VOCs sample was thermal desorbed and focused by a cryogenic trap, then analyzed by GC/MS. In identification, aft

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25

Rosa, Maria Jose. "Ambient combustion by-product exposures and exhaled biomarkers of airway inflammation and oxidative stress." Thesis, 2014. https://doi.org/10.7916/D8KP8BSP.

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Introduction: Numerous studies have found associations between exposure to airborne particulate matter and respiratory morbidity and mortality. However, the varying composition, dependant on the different sources of particulate matter, and its effect on processes of inflammation and oxidative stress in the airways has not been completely elucidated. The use of airway biomarkers, fractional exhaled nitric oxide (FENO) and exhaled breath condensate (EBC), can provide valuable insight into processes of inflammation and oxidative stress in the airways. In these studies we sought to characterize th

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26

Hui-Xun, Lin, and 林暉巽. "A Study Of The Impact Of Season And Air Pollutant On Exhaled Breath Index For Children With Asthma And Allergic Rhinitis." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/b5z8cc.

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碩士<br>輔仁大學<br>公共衛生學系碩士班<br>96<br>Background： The allergic disease has been markedly increased in recent years in Taiwan. Indoor air pollutants such as suspended particular matter ( SPM ), volatile organic compounds ( VOCs ), carbon dioxide ( CO2 ), carbon monoxide ( CO ), sulfur dioxide ( SO2 ) and ozone ( O3 ) may cause adverse health effects to children with airway hyper-sensitively. Detection of exhale nitric oxide ( eNO ), nasal nitric oxide ( nNO ) and exhaled breath condensate pH ( EBC pH ) is a noninvasive technique to monitor the airway inflammation. The effects of air pollutants expos

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27

Richards, Lisa. "Exhaled nitric oxide : a useful biomarker of acute respiratory health effects resulting from exposure to ambient air pollution? : a pilot study in Conyers, Georgia." 2008. http://hdl.handle.net/1993/21084.

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28

Costa, Joana Logrado Figueiredo Belo da. "Avaliação de idosos institucionalizados por espirometria e condensado brônquico do ar exalado : efeitos da exposição ambiental." Doctoral thesis, 2018. http://hdl.handle.net/10362/70298.

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impacto da poluição ambiental na saúde tem sido, nas últimas décadas, um recorrente objetivo de estudo, não só numa perspetiva de investigação científica mas, igualmente, numa lógica de implementação de políticas de saúde pública. São enumeras as evidências dos efeitos, a curto e a longo prazo, que se associam com maiores índices de morbilidade e mortalidade decorrentes da exposição à poluição. Do ponto de vista da saúde respiratória, estão disponíveis dados que demonstram que a exposição ambiental é a causa para o desenvolvimento e/ou agravamento de doenças respiratórias nomeadamente, doença

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