Results 11 to 20 of about 2,576,051 (248)

Odor Concentration Prediction by Gas Chromatography and Mass Spectrometry (GC-MS): Importance of VOCs Quantification and Odor Detection Threshold Accuracy

Chemical Engineering Transactions, 2016
Odor annoyance is the second most important nuisance in Europe. So, the knowledge of the odor concentration is very important to assess the odor impact on the environment. In Europe, EN 13725 regulates the method to measure the odor concentration.
S. Cariou, M. Chaignaud, P. Montreer, M. Fages, J.L. Fanlo   +4 more
doaj   +2 more sources

Keeping their distance? Odor response patterns along the concentration range. [PDF]

Frontiers in Systems Neuroscience, 2012
We investigate the interplay of odor identity and concentration coding in the antennal lobe of the honeybee Apis mellifera. In this primary olfactory center of the honeybee brain, odors are encoded by the spatio-temporal response patterns of olfactory ...
Martin eStrauch, Martin eStrauch, Mathias eDitzen, Cosmas Giovanni Galizia   +3 more
doaj   +3 more sources

Odor concentration invariance by chemical ratio coding [PDF]

Frontiers in Systems Neuroscience, 2008
Many animal species rely on chemical signals to extract ecologically important information from the environment. Yet in natural conditions chemical signals will frequently undergo concentration changes that produce differences in both level and pattern ...
Naoshige Uchida, Zachary F Mainen
doaj   +2 more sources

Investigation of odor emissions from coating products: Key factors and key odorants

Frontiers in Environmental Science, 2022
Coating products are widely used for the interior decoration of residential property. However, there is growing concern regarding their odor emissions and their impact on indoor air quality (IAQ).
Yipu Pei, Ning Liu, Shihua Liu, Hongyan Guan, Zhongbao Guo, Qiannan Li, Wei Han, Hanmei Cai   +7 more
doaj   +1 more source

Understanding odor information segregation in the olfactory bulb by means of mitral and tufted cells. [PDF]

PLoS ONE, 2014
Odor identification is one of the main tasks of the olfactory system. It is performed almost independently from the concentration of the odor providing a robust recognition.
Davide Polese, Eugenio Martinelli, Santiago Marco, Corrado Di Natale, Agustin Gutierrez-Galvez   +4 more
doaj   +1 more source

Non-contact neuromodulation of the human autonomic nervous system function via different odors: Sex, menstrual cycle, and odor dose- and duration-specific effects

Frontiers in Neuroscience, 2022
In recent decades, it has been uncovered that the autonomic nervous system (ANS) can be influenced using non-contact neuromodulation via odor stimulation.
Ashim Maharjan, Prashanna Khwaounjoo, Prashanna Khwaounjoo, Prashanna Khwaounjoo, Mei Peng, Yusuf Ozgur Cakmak, Yusuf Ozgur Cakmak, Yusuf Ozgur Cakmak, Yusuf Ozgur Cakmak   +8 more
doaj   +1 more source

Cognitive facilitation following intentional odor exposure [PDF]

, 2011
This paper reviews evidence that, in addition to incidental olfactory pollutants, intentional odor delivery can impact cognitive operations both positively and negatively.
Andrew J. Johnson, Johnson, A.J.
core   +1 more source

Optophysiological analysis of pattern classification strategies in the zebrafish olfactory bulb [PDF]

, 2012
Classification of overlapping activity patterns is a common problem for sensory systems. For a robust representation of sensory stimuli, neuronal circuits should generalize over input patterns reflecting variations of the same stimulus but separate ...
Niessing, Jörn
core   +1 more source

Measuring Spatiotemporal Dynamics of Odor Gradient for Small Animals by Gas Chromatography

Bio-Protocol, 2018
Odor is the most fundamental chemical stimulus that delivers information regarding food, mating partners, enemies, and danger in the surrounding environment.
Akiko Yamazoe-Umemoto, Yuishi Iwasaki, Koutarou Kimura   +2 more
doaj   +1 more source

Categorical Dimensions of Human Odor Descriptor Space Revealed by Non-Negative Matrix Factorization [PDF]

, 2013
In contrast to most other sensory modalities, the basic perceptual dimensions of olfaction remain unclear. Here, we use non-negative matrix factorization (NMF) – a dimensionality reduction technique – to uncover structure in a panel of odor profiles ...
Castro, Jason B., Jason B. Castro, Castro, Jason B, Chennubhotla, Chakra S., Ramanathan, Arvind, Schaefer, Andreas, Chennubhotla Chakra S., Arvind Ramanathan (198127), Jason B. Castro (460485), Jason B Castro, Ramanathan Arvind, Arvind Ramanathan, Castro Jason B., Chakra S. Chennubhotla, Chennubhotla, Chakra S, Chakra S Chennubhotla, Chakra S. Chennubhotla (232086)   +16 more
core   +2 more sources