Добірка наукової літератури з теми "Formaldehyde sensors"
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Статті в журналах з теми "Formaldehyde sensors"
Wang, Jing, Xing Ru Chen, Peng Jun Yao, Min Ji, Jin Qing Qi, and Wei Wu. "Detection of Indoor Formaldehyde Concentration Using LaSrFeO3-Doped SnO2 Gas Sensor." Key Engineering Materials 437 (May 2010): 349–53. http://dx.doi.org/10.4028/www.scientific.net/kem.437.349.
Повний текст джерелаArabi, Mohamed, Majed Alghamdi, Khalid Kabel, Ahmed Labena, Walaa S. Gado, Bhoomi Mavani, Alison J. Scott, Alexander Penlidis, Mustafa Yavuz, and Eihab Abdel-Rahman. "Detection of Volatile Organic Compounds by Using MEMS Sensors." Sensors 22, no. 11 (May 28, 2022): 4102. http://dx.doi.org/10.3390/s22114102.
Повний текст джерелаHe, Ying Fei, Ya Dong Jiang, Hui Ling Tai, and Guang Zhong Xie. "The Investigation of Quartz Crystal Microbalance (QCM) Formaldehyde Sensors Based on PEI-MWCNTs Composites." Advanced Materials Research 1030-1032 (September 2014): 217–22. http://dx.doi.org/10.4028/www.scientific.net/amr.1030-1032.217.
Повний текст джерелаHe, Ying Fei, Ya Dong Jiang, Hui Ling Tai, and Guang Zhong Xie. "Fabrication and Formaldehyde-Sensing Property of Quartz Crystal Microbalance (QCM) Coated with PVP-MWCNTs Composites." Key Engineering Materials 645-646 (May 2015): 719–23. http://dx.doi.org/10.4028/www.scientific.net/kem.645-646.719.
Повний текст джерелаPark, Jae Jung, Yongsoo Kim, Chanmin Lee, Jun-Won Kook, Donghyun Kim, Jung-Hyun Kim, Ki-Seob Hwang, and Jun-Young Lee. "Colorimetric Visualization Using Polymeric Core–Shell Nanoparticles: Enhanced Sensitivity for Formaldehyde Gas Sensors." Polymers 12, no. 5 (April 25, 2020): 998. http://dx.doi.org/10.3390/polym12050998.
Повний текст джерелаChobsilp, Thanattha, Thotsaphon Threrujirapapong, Visittapong Yordsri, Alongkot Treetong, Saowaluk Inpaeng, Karaked Tedsree, Paola Ayala, Thomas Pichler, Lei Shi, and Worawut Muangrat. "Highly Sensitive and Selective Formaldehyde Gas Sensors Based on Polyvinylpyrrolidone/Nitrogen-Doped Double-Walled Carbon Nanotubes." Sensors 22, no. 23 (November 30, 2022): 9329. http://dx.doi.org/10.3390/s22239329.
Повний текст джерелаFlueckiger, Jonas, Frank Ko, and Karen Cheung. "Microfabricated Formaldehyde Gas Sensors." Sensors 9, no. 11 (November 18, 2009): 9196–215. http://dx.doi.org/10.3390/s91109196.
Повний текст джерелаMerenkova, A. A., K. V. Zhuzhukin, A. N. Zyablov, and L. I. Belchinskaya. "Determination of formaldehyde in production solutions using the piezoelectric sensors." Аналитика и контроль 25, no. 2 (2021): 140–45. http://dx.doi.org/10.15826/analitika.2021.25.2.003.
Повний текст джерелаA. Akbar, S., A. Mardhiah, N. Saidi, and D. Lelifajri. "The effect of graphite composition on polyaniline film performance for formalin gas sensor." Bulletin of the Chemical Society of Ethiopia 34, no. 3 (January 12, 2021): 597–604. http://dx.doi.org/10.4314/bcse.v34i3.14.
Повний текст джерелаYuan, Zhenyu, Chang Yang, and Fanli Meng. "Strategies for Improving the Sensing Performance of Semiconductor Gas Sensors for High-Performance Formaldehyde Detection: A Review." Chemosensors 9, no. 7 (July 14, 2021): 179. http://dx.doi.org/10.3390/chemosensors9070179.
Повний текст джерелаДисертації з теми "Formaldehyde sensors"
Boddeti, Ravi Kumar. "Laser spectroscopy sensors for measurement of trace gaseous formaldehyde /." Connect to resource online, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1220624621.
Повний текст джерелаBoddeti, Ravi K. "Laser Spectroscopy Sensors for Measurement of Trace Gaseous Formaldehyde." Youngstown State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1220624621.
Повний текст джерелаDe, Smedt Isabelle. "Long-term global observations of tropospheric formaldehyde retrieved from spaceborne nadir UV sensors." Doctoral thesis, Universite Libre de Bruxelles, 2011. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209919.
Повний текст джерелаThis work reports on global observations of formaldehyde columns retrieved from the successive solar backscatter nadir sensors GOME, SCIAMACHY and GOME-2, respectively launched in 1995, 2002 and 2006. The retrieval procedure is based on the differential optical absorption spectroscopy technique (DOAS). Formaldehyde concentrations integrated along the mean atmospheric optical path are derived from the recorded spectra in the UV region, and further converted to vertical columns by means of calculated air mass factors. These are obtained from radiative transfer simulations, accounting for cloud coverage, surface properties and best-guess H2CO profiles, the latter being derived from the IMAGES chemistry transport model. A key task of the thesis has consisted in the optimisation of the H2CO retrieval settings from multiple sensors, taking into account the instrumental specificities of each sounder. As a result of these efforts, a homogeneous dataset of formaldehyde columns covering the period from 1996 to 2010 has been created. This comes with a comprehensive error budget that treats errors related to the spectral fit of the columns as well as those associated to the air mass factor evaluation. The time series of the GOME, SCIAMACHY and GOME-2 H2CO observations is shown to be consistent and stable over time. In addition, GOME-2 brings a significant reduction of the noise on spatiotemporally averaged observations, leading to a better identification of the emission sources. Our dataset is used to study the regional formaldehyde distribution, as well as its seasonal and interannual variations, principally related to temperature changes and fire events, but also to anthropogenic activities. Moreover, building on the quality of our 15-year time series, we present the first analysis of long-term changes in the H2CO columns. Positive trends, in the range of 1.5 to 4% yr-1, are found in Asia, more particularly in Eastern China and India, and are related to the known increase of anthropogenic NMVOC emissions in these regions. Finally, our dataset has been extensively used in several studies, in particular by the BIRA-IASB modelling team to constrain NMVOC emission fluxes. The results demonstrate the high potential of satellite data as top-down constraint for biogenic and biomass burning NMVOC emission inventories, especially in Tropical ecosystems, in Southeastern Asia, and in Southeastern US.
Le formaldéhyde (H2CO) joue un rôle central dans la chimie de la troposphère en tant que produit intermédiaire commun à la dégradation chimique de la plupart des composés organiques volatils dans l’atmosphère. L’oxydation du méthane est responsable de plus de la moitié de la concentration moyenne globale du formaldéhyde. Sur les continents en revanche, les hydrocarbures non-méthaniques (NMVOCs) émis par la végétation, les feux de biomasse et les activités humaines, augmentent de façon significative et localisée la concentration de H2CO. Les récents senseurs satellitaires à visée nadir offrent la possibilité de quantifier à l’échelle globale l’abondance du formaldéhyde dans la troposphère et de ce fait, d’améliorer notre connaissance des émissions de NMVOCs. Ceci est essentiel à la compréhension des mécanismes contrôlant la production et l’évolution de l’ozone troposphérique, élément clé pour la qualité de l’air et les changements climatiques, mais aussi du composé hydroxyle OH, le principal agent nettoyant de notre troposphère. C’est pourquoi, une méthode de plus en plus répandue pour améliorer les inventaires d’émissions des NMVOCs consiste en l’utilisation d’observations satellitaires de H2CO en combinaison avec un modèle de chimie et de transport troposphérique, dans une approche appelée modélisation inverse. Ce genre d’application demande des produits satellitaires bien caractérisés et dérivés de façon cohérente sur de longues périodes de temps.
Le travail présenté dans ce manuscrit porte sur l’inversion des colonnes de formaldéhyde à partir de spectres de la radiation solaire rétrodiffusée par l’atmosphère terrestre, mesurés par les senseurs GOME, SCIAMACHY et GOME-2, lancés successivement en 1995, 2002 et 2006. La méthode d’inversion est basée sur la spectroscopie d’absorption optique différentielle (DOAS). Les concentrations de formaldéhyde intégrées le long du chemin optique moyen dans l’atmosphère sont dérivées à partir des spectres mesurés, et ensuite transformées en colonnes verticales par le biais de facteurs de conversion appelés facteurs de masse d’air. Ces derniers sont calculés à l’aide d’un modèle de transfert radiatif, en tenant compte de la présence de nuages, des propriétés de la surface terrestre et la distribution verticale supposée du formaldéhyde, fournie par le modèle IMAGES. Un des objectifs principaux de la thèse a été d’optimiser les paramètres d’inversion pour H2CO, et ceci pour les trois senseurs, tout en tenant compte des spécificités de chaque instrument. Ces efforts ont conduit à la création d’un jeu de données homogène, couvrant la période de 1996 à 2010. Les colonnes sont fournies avec un bilan d’erreur complet, incluant les erreurs liées à l’inversion des concentrations dans les spectres, ainsi que celles provenant de l’évaluation des facteurs de masse d’air. La série temporelle des observations de GOME, SCIAMACHY et GOME-2 présente une bonne cohérence et stabilité sur toute la période. Nous montrons aussi que la meilleure couverture terrestre de GOME-2 entraîne une réduction significative du bruit sur les observations moyennées, permettant une meilleure identification des sources d’émission. Notre jeu de données est exploité pour étudier la distribution régionale du formaldéhyde, ainsi que ses variations saisonnières et interannuelles, principalement liées aux variations de température et aux feux de végétation, mais aussi aux activités anthropiques. De plus, en s’appuyant sur la qualité de la série temporelle de 15 ans, nous présentons la première analyse des variations à long terme des concentrations de H2CO. Des tendances positives, de l’ordre de 1.5 à 4% par an, sont observées en Asie, en particulier dans l’est de la Chine et en Inde, liées à l’augmentation des émissions anthropiques d’hydrocarbures dans ces régions. Finalement, nos données ont été largement exploitées par le groupe de modélisation de l’IASB pour faire des études de modélisation inverse des émissions de NMVOCs. Les résultats démontrent le haut potentiel des données satellitaires pour contraindre les inventaires d’émissions dues à la végétation et aux feux de biomasse, particulièrement dans les écosystèmes tropicaux, en Asie du sud-est, et dans le sud-est des Etats-Unis.
Doctorat en Sciences de l'ingénieur
info:eu-repo/semantics/nonPublished
Alolaywi, Haidar. "Electrochemical MoOx/Carbon Nanocomposite Gas Sensor for Formaldehyde Detection at Room Temperature." University of Toledo / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1596821142716346.
Повний текст джерелаRavi, Srivathsan. "Continuous Monitoring and Removal of Formaldehyde Vapor in Ambient Air Using Polymer Catalyst Membranes." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1384428049.
Повний текст джерелаCuba, Supanta Gustavo. "Efectos del dopaje y la temperatura sobre las propiedades térmicas de hetero-estructuras de C/BN y su potencial uso como sensor ambiental del formaldehído." Doctoral thesis, Universidad Nacional Mayor de San Marcos, 2019. https://hdl.handle.net/20.500.12672/12312.
Повний текст джерелаConsejo Nacional de Ciencia y Tecnología (Perú). Fondo Nacional de Desarrollo Científico y Tecnológico (Fondecyt)
Tesis
Cindemir, Umut. "Thin films for indoor air monitoring : Measurements of Volatile Organic Compounds." Doctoral thesis, Uppsala universitet, Fasta tillståndets fysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-302558.
Повний текст джерелаPaul, Mitchell Cameron. "Terahertz Molecular Spectroscopy as a Tool for Analytical Probing of Cellular Metabolism." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1503928902745757.
Повний текст джерелаStewart, Katherine Mariann Elizabeth. "Doped Polyaniline for Gas Sensors for the Detection of Formaldehyde." Thesis, 2011. http://hdl.handle.net/10012/5852.
Повний текст джерелаHsieh, Ping-Ru, and 謝秉儒. "Fabrication of Micro Formaldehyde Gas Sensor." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/83767525429677899597.
Повний текст джерела大葉大學
機械工程研究所碩士班
94
ABSTRACT A novel micro formaldehyde gas sensor with a sputtered NiO thin film integrated with a micro hotplate was fabricated. A microfabricated formaldehyde gas sensor is developed which uses a silica substrate with Pt micro heaters as the micro hotplate and a thin-film NiO layer as a conductivity-sensitive material. The substrate is deposited with NiO thin film as sensing elements, Pt resistors as heaters, and as interdigitated electrodes for resistance measurement. As voltages were applied to Pt heaters, temperature of micro hotplates increased. Thus, at 300oC, when formaldehyde was present in the atmosphere, it was adsorbed and as a result the electrical conductivity of NiO films was increased. The measured resistance between the interdigitated electrodes was changed. The formaldehyde gas sensor was integrated with a Pt resistor as a micro heater for the enhancement of sensitivity. A high selectivity to acetone, methanol and ethanol was alson shown in the study.
Частини книг з теми "Formaldehyde sensors"
Debliquy, Marc, Arnaud Krumpmann, Driss Lahem, Xiaohui Tang, and Jean-Pierre Raskin. "Chemical Sensors for VOC Detection in Indoor Air: Focus on Formaldehyde." In Nanoscale Materials for Warfare Agent Detection: Nanoscience for Security, 47–70. Dordrecht: Springer Netherlands, 2019. http://dx.doi.org/10.1007/978-94-024-1620-6_4.
Повний текст джерелаGupta, Jyoti, Prachi Singhal, and Sunita Rattan. "Formaldehyde Gas Sensor Based on MoS2/RGO 2D/2D Functional Nanocomposites." In Polymeric Biomaterials and Bioengineering, 159–65. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1084-5_15.
Повний текст джерелаDas, Shreyasi, Poulomi Chakrabarty, Tamal Dey, Sumita Santra, Soumen Das, and Samit K. Ray. "Room Temperature Detection of Formaldehyde with Economical and Ecofriendly Graphene Quantum Dot Ink Treated Paper-Based Sensor." In Lecture Notes in Bioengineering, 265–76. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6915-3_28.
Повний текст джерелаHuang, H., C. C. Chen, and C. T. Tzeng. "A performance comparison study of the Sorptive Building Materials with MEMS-based formaldehyde gas sensor from the aspect of reduction efficiency of indoor formaldehyde concentration." In Testing and Measurement: Techniques and Applications, 93–96. CRC Press, 2015. http://dx.doi.org/10.1201/b18470-21.
Повний текст джерелаТези доповідей конференцій з теми "Formaldehyde sensors"
Acharyya, Snehanjan, Sayan Dey, Sudip Nag, and Prasanta Kumar Guha. "ZnO Cladded MnO2 Based Resistive Sensor Device for Formaldehyde Sensing." In 2018 IEEE Sensors. IEEE, 2018. http://dx.doi.org/10.1109/icsens.2018.8589683.
Повний текст джерелаHassan, Muhammad, and Amine Bermak. "Threshold detection of carcinogenic odor of formaldehyde with wireless electronic nose." In 2014 IEEE Sensors. IEEE, 2014. http://dx.doi.org/10.1109/icsens.2014.6985266.
Повний текст джерелаCindemir, Umut, Lars Osterlund, Gunnar A. Niklasson, Claes-Goran Granqvist, Maciej Trawka, and Janusz Smulko. "Nickel oxide thin film sensor for fluctuation-enhanced gas sensing of formaldehyde." In 2015 IEEE Sensors. IEEE, 2015. http://dx.doi.org/10.1109/icsens.2015.7370408.
Повний текст джерелаLee, Chia-yen, Che-ming Chiang, Po-cheng Chou, Lung-ming Fu, and Che-hsin Lin. "A Novel Microfabricated Formaldehyde Gas Sensor with NiO Thin Film." In 2005 Sensors for Industry Conference. IEEE, 2005. http://dx.doi.org/10.1109/sicon.2005.257859.
Повний текст джерелаDey, Sayan, Sumita Santra, Sabyasachi Sen, Debasree Burman, Samit K. Ray, and Prasanta K. Guha. "Photon assisted ultra-selective Formaldehyde sensing by defect induced NiO nanostructured sensing layer." In 2017 IEEE SENSORS. IEEE, 2017. http://dx.doi.org/10.1109/icsens.2017.8234446.
Повний текст джерелаXu, Keng, and Dawen Zeng. "Hierarchical porous SnO2 topologically transferred from tin oxalate for fast response sensors to trace formaldehyde." In 2013 IEEE Sensors. IEEE, 2013. http://dx.doi.org/10.1109/icsens.2013.6688191.
Повний текст джерелаManna, Bibhas, Snehanjan Acharyya, Indrajit Chakrabarti, and Prasanta Kumar Guha. "Exploring Formaldehyde Sensing Capability of Noble Metal Decorated Reduced Graphene Oxide through First Principle Approach." In 2019 IEEE SENSORS. IEEE, 2019. http://dx.doi.org/10.1109/sensors43011.2019.8956865.
Повний текст джерелаGuo, Miao, Ming-En Xu, Min Pan, and Yuquan Chen. "Effect of Thiol on Formaldehyde Sensors Based on CNTs." In 2009 3rd International Conference on Bioinformatics and Biomedical Engineering (iCBBE 2009). IEEE, 2009. http://dx.doi.org/10.1109/icbbe.2009.5162717.
Повний текст джерелаXu, J., and L. Wang. "P2GS.1 - QCM formaldehyde sensing probes: design and sensing mechanism." In 17th International Meeting on Chemical Sensors - IMCS 2018. AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, Germany, 2018. http://dx.doi.org/10.5162/imcs2018/p2gs.1.
Повний текст джерелаChia-Yen Lee, Yu-Hsiang Wang, Wen-Fu Ho, Rong-Hua Ma, and Po-Cheng Chou. "Formaldehyde Gas Sensor Utilizing Self-heating NiO Thin Film and Pt Electrodes." In 2006 5th IEEE Conference on Sensors. IEEE, 2006. http://dx.doi.org/10.1109/icsens.2007.355507.
Повний текст джерела