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Journal articles on the topic 'Odor'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Bo, Weichen, Yuandong Yu, Ran He, et al. "Insight into the Structure–Odor Relationship of Molecules: A Computational Study Based on Deep Learning." Foods 11, no. 14 (2022): 2033. http://dx.doi.org/10.3390/foods11142033.

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Molecules with pleasant odors, unacceptable odors, and even serious toxicity are closely related to human social life. It is impractical to identify the odors of molecules in large quantities (particularly hazardous odors) using experimental methods. Computer-aided methods have currently attracted increasing attention for the prediction of molecular odors. Here, through models based on multilayer perceptron (MLP) and physicochemical descriptors (MLP-Des), MLP and molecular fingerprint, and convolutional neural network (CNN), we conduct the two-class prediction of odor/no odor, fruity/no odor,

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2

Patel, Muktiben M., Nigam D. Patel, Angela Rekhi, and Alan R. Hirsch. "163 Treatment of Odor-Induced Anxiogenesis With Odor-Induced Anxiolysis." CNS Spectrums 23, no. 1 (2018): 99. http://dx.doi.org/10.1017/s1092852918000548.

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AbstractStudy ObjectiveTo understand the effects of odor on anxiety.IntroductionReduction of odor-induced anxiety through a presentation of an odor has not heretofore been described.MethodCase report: A 69-year-old right-handed male with a five year history of generalized anxiety disorder, presented with a one and a half month history of hypersensitivity to odors of multiple synthetic chemicals manifest by the perception that these odors were more intense and unpleasant inducing nausea, abdominal cramping, coughing, a need to “get away from the smell”, and panic with intense anxiety. These sym

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3

Bian, Yuge, Haoning Gong, and I. H. (Mel) Suffet. "The Use of the Odor Profile Method with an “Odor Patrol” Panel to Evaluate an Odor Impacted Site near a Landfill." Atmosphere 12, no. 4 (2021): 472. http://dx.doi.org/10.3390/atmos12040472.

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A third-party-trained “Odor Patrol” program was conducted at a school that is about a one-mile distance from a landfill to clarify the odor nuisance problems from the landfill. Every 20 min from 6 to 9 a.m. on school days, the “Odor Profile Method” (OPM) was used with the landfill odor wheel to identify the odor type and intensity of each odor type. This study showed that an Odor Patrol using the OPM can accurately define odor nuisance changes over time and can be used as a method to confirm changes of odor nuisances in a field study. The Odor Patrol only found 13 data inputs of the 1000 data

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4

Burlingame, G. A. "A practical framework using odor survey data to prioritize nuisance odors." Water Science and Technology 59, no. 3 (2009): 595–602. http://dx.doi.org/10.2166/wst.2009.872.

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There are three main questions that need to be answered to address nuisance odors at the fenceline of a wastewater treatment plant: What odors are occurring at the fenceline of the plant? What processes within the plant give rise to these odors? What priority should we assign to mitigation of the nuisance odors? The prioritization is based on three factors that make odors a nuisance: strength or intensity of the odor when it is detected; quality or description of the odor; persistence or occurrence of the odor at the fenceline. Since fenceline odors vary according to: wind direction; wind spee

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5

Öberg, Christina, Maria Larsson, and Lars Bäckman. "Differential sex effects in olfactory functioning: The role of verbal processing." Journal of the International Neuropsychological Society 8, no. 5 (2002): 691–98. http://dx.doi.org/10.1017/s1355617702801424.

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AbstractWe investigated sex difference across a number of olfactory tasks. Thirty-six men and 35 women ranging in age from 19 to 36 years were assessed in 6 different tasks: absolute sensitivity for n-butanol, intensity discrimination, quality discrimination, episodic recognition memory for familiar and unfamiliar odors, and odor identification. No sex differences were observed in the tasks tapping primarily sensory acuity (i.e., odor sensitivity, intensity discrimination, and quality discrimination) or in episodic memory for unfamiliar odors. By contrast, women outperformed men in the tasks i

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6

Cho, Hyeon-Jun, and Su-Chul Yoon. "Occurrence of Designated Odor Substances in Wastewater Treatment Plant and Industrial Estate." Journal of Korean Society of Environmental Engineers 46, no. 3 (2024): 73–80. http://dx.doi.org/10.4491/ksee.2024.46.3.73.

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Objectives : Odor emissions pose a challenge due to the diversity of odor-producing substances, their various sources, and the complex interactions between different compounds. Moreover, people's perception of odor intensity can vary based on their living environment and psychological state, making it difficult to effectively manage and develop mitigation measures for odors, in contrast to other air pollutants. To address this issue, this study focuses on two prominent sources of residential odors, namely wastewater treatment plant and industrial estate.Methods : Through on-site data collectio

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7

Tamura, Kaori, and Tsuyoshi Okamoto. "Odor descriptive ratings can predict some odor-color associations in different color features of hue or lightness." PeerJ 11 (April 20, 2023): e15251. http://dx.doi.org/10.7717/peerj.15251.

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Background Olfactory information can be associated with color information. Researchers have investigated the role of descriptive ratings of odors on odor-color associations. Research into these associations should also focus on the differences in odor types. We aimed to identify the odor descriptive ratings that can predict odor-color corresponding formation, and predict features of the associated colors from the ratings taking into consideration the differences in the odor types. Methods We assessed 13 types of odors and their associated colors in participants with a Japanese cultural backgro

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8

Schoenbaum, G., and H. Eichenbaum. "Information coding in the rodent prefrontal cortex. I. Single-neuron activity in orbitofrontal cortex compared with that in pyriform cortex." Journal of Neurophysiology 74, no. 2 (1995): 733–50. http://dx.doi.org/10.1152/jn.1995.74.2.733.

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1. Extracellular spike activity was recorded from 1,942 single neurons in orbitofrontal cortex (OF) and 591 single neurons in pyriform cortex (PIR) over multiple sessions in rats performing an eight-odor discrimination task in which the stimulus sequence contained predictable associations between particular odor pairs. Neural firing patterns were examined in relation to task events in the current trial and variables associated with current sensory processing, events of recent past trials, and long-term associations involving the odor cues. 2. Overall, 34% of single neurons in OF and 30% of sin

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9

Carmona-Escutia, Rosa Pilar, Edith Ponce-Alquicira, María Dolores García-Parra, Socorro Josefina Villanueva-Rodríguez, and Héctor B. Escalona-Buendía. "Changes in the Sensory Odor Profile during Chorizo Maturation and Their Relationship with Volatile Compound Patterns by Partial Least Square Regression (PLS)." Foods 12, no. 5 (2023): 932. http://dx.doi.org/10.3390/foods12050932.

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Odor is one of the most important attributes to determine the overall acceptance of a product. The aim of this investigation is to evaluate the changes in the odor profile and the volatile compounds during thirty-three days of ripening to obtain the pattern of volatile compounds necessary to integrate the odor profile of chorizo (fermented sausage), using Partial Least Squares (PLS). The chili and pork meat odors were predominant during the first five days, vinegar and fermented odors at days twelve and nineteen days, and finally a rancid odor predominated at the end. Only the vinegar, rancid,

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10

Bhalla, Mukul, Kim M. Marcus, and John M. Cornwell. "ODOR Recognition and Identification: Effect of Labels over Time." Psychological Reports 86, no. 2 (2000): 565–74. http://dx.doi.org/10.2466/pr0.2000.86.2.565.

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The effect of labels on recognition and identification of odors over time was assessed. 30 men and 30 women were presented 20 odors; half of the participants were also told a name for the odor as a label. Five min. and 60 min. later, all participants were given 20 odors (10 from the original set, 10 new) and asked whether each odor was new or old (odor recognition). The group given labels was also asked to recall the label provided (odor identification). Analysis indicated a significant effect of time on recognition. Significantly more odors were recognized at 5 min. than 60 min. The effect of

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11

Du, Hongxia, Zihan Wang, Yongjun Sun, and Kinjal J. Shah. "An Overview of the Progress made in Research on Odor Removal in Water Treatment Plants." Water 16, no. 2 (2024): 280. http://dx.doi.org/10.3390/w16020280.

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Odor is one of the most intuitive indicators for assessing drinking water quality in waterworks. Removing odors is of great importance to improve the quality of tap water, ensure people’s health, and address public perception. The effective identification of odors in drinking water and the exploration of the source of the odor are the prerequisites for eliminating odors. Therefore, this article first discusses the sources and types of odors that are typical in current drinking water, focuses on reviewing the research progress of odor removal technologies in water treatment plants, including ad

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12

Prichard, Ashley, Raveena Chhibber, Jon King, Kate Athanassiades, Mark Spivak, and Gregory S. Berns. "Decoding Odor Mixtures in the Dog Brain: An Awake fMRI Study." Chemical Senses 45, no. 9 (2020): 833–44. http://dx.doi.org/10.1093/chemse/bjaa068.

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Abstract In working and practical contexts, dogs rely upon their ability to discriminate a target odor from distracting odors and other sensory stimuli. Using awake functional magnetic resonance imaging (fMRI) in 18 dogs, we examined the neural mechanisms underlying odor discrimination between 2 odors and a mixture of the odors. Neural activation was measured during the presentation of a target odor (A) associated with a food reward, a distractor odor (B) associated with nothing, and a mixture of the two odors (A+B). Changes in neural activation during the presentations of the odor stimuli in

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13

Lee, Do-Hyun, Sang-Hun Lee, Saem-Ee Woo, Min-Woong Jung, Do-yun Kim, and Tae-Young Heo. "Prediction of Complex Odor from Pig Barn Using Machine Learning and Identifying the Influence of Variables Using Explainable Artificial Intelligence." Applied Sciences 12, no. 24 (2022): 12943. http://dx.doi.org/10.3390/app122412943.

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Odor is a very serious problem worldwide. Thus, odor prediction research has been conducted consistently to help prevent odor. Odor substances that are complex odors are known, but complex odors and odor substances do not have a linear dependence. In addition, depending on the combination of odor substances, the causal relationships, such as synergy and antagonism, are different for complex odors. Research is needed to know this, but the situation is incomplete. Therefore, in this study, research was conducted through data-based research. The complex odor was predicted using various machine le

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14

Cammaerts, Marie-Claire, and Roger Cammaerts. "Ants’ Capability of Adding and Subtracting Odors." International Journal of Biology 12, no. 1 (2019): 1. http://dx.doi.org/10.5539/ijb.v12n1p1.

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Summing and discriminating odors may be useful for animals in their daily life. The workers of the ant Myrmica sabuleti rely essentially on odors for navigating and have a rather poor visual perception. It was previously shown that they can add and subtract visual elements when the result of the operation has been concretely presented to them, i.e. they thus respond to an image which corresponds the best to that they have memorized. Here we examined if these ants can sum two odors and &lsquo;subtract&rsquo; (discriminate) an odor from a mixture of two ones. They added two distinct odor

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15

Rantala, Jussi, Katri Salminen, Poika Isokoski, et al. "Recall of Odorous Objects in Virtual Reality." Multimodal Technologies and Interaction 8, no. 6 (2024): 42. http://dx.doi.org/10.3390/mti8060042.

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The aim was to investigate how the congruence of odors and visual objects in virtual reality (VR) affects later memory recall of the objects. Participants (N = 30) interacted with 12 objects in VR. The interaction was varied by odor congruency (i.e., the odor matched the object’s visual appearance, the odor did not match the object’s visual appearance, or the object had no odor); odor quality (i.e., an authentic or a synthetic odor); and interaction type (i.e., participants could look and manipulate or could only look at objects). After interacting with the 12 objects, incidental memory perfor

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16

McQueen, Rachel H., and Sara Vaezafshar. "Odor in textiles: A review of evaluation methods, fabric characteristics, and odor control technologies." Textile Research Journal 90, no. 9-10 (2019): 1157–73. http://dx.doi.org/10.1177/0040517519883952.

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During use, textile items can develop unpleasant odors that arise from many different sources, both internal and external to the human body. Laundering is not always effective at removing odors, with odor potentially building up over time due to incomplete removal of soils and odorous compounds and/or malodors transferred during the laundering process. Textile odor can lead to consumer dissatisfaction, particularly as there are high expectations that clothing and textile products meet multiple aesthetic and functional needs. The problem of odor in textiles is complex and multi-faceted, with od

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17

Zakrzewska, Marta, Marco Tullio Liuzza, and Jonas K. Olofsson. "Body odor disgust sensitivity (BODS) is related to extreme odor valence perception." PLOS ONE 18, no. 4 (2023): e0284397. http://dx.doi.org/10.1371/journal.pone.0284397.

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Odors are important disease cues, and disgust sensitivity to body odors reflects individual differences in disease avoidance. The body odor disgust sensitivity (BODS) scale provides a rapid and valid assessment of individual differences. Nevertheless, little is known about how individual differences in BODS might correlate with overall odor perception or how it is related to other differences in emotional reactivity (e.g., affect intensity). We investigated how BODS relates to perceptual ratings of pleasant and unpleasant odors. We aggregated data from 4 experiments (total N = 190) that were c

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18

Wilson, Donald A. "Odor Specificity of Habituation in the Rat Anterior Piriform Cortex." Journal of Neurophysiology 83, no. 1 (2000): 139–45. http://dx.doi.org/10.1152/jn.2000.83.1.139.

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Exposure to odorants results in a rapid (<10 s) reduction in odor-evoked activity in the rat piriform cortex despite relatively maintained afferent input from olfactory bulb mitral cells. To further understand this form of cortical plasticity, a detailed analysis of its odor specificity was performed. Habituation of odor responses in anterior piriform cortex single units was examined in anesthetized, freely breathing rats. The magnitude of single-unit responses of layer II/III neurons to 2-s odor pulses were examined before and after a 50-s habituating stimulus of either the same or differe

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19

Degel, Joachim, and Egon Peter Köster. "Implicit Memory for Odors: A Possible Method for Observation." Perceptual and Motor Skills 86, no. 3 (1998): 943–52. http://dx.doi.org/10.2466/pms.1998.86.3.943.

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In an experiment 143 subjects were instructed to assign odors to contexts which were displayed in a slide session. The slides depicted contexts from three areas of everyday life which party contained visual cues related to a presented odor. After rating the fit of each odor to a context, the subjects rated the odors for pleasantness. Analysis showed a strong influence of the visual cue on the rating of fit for the contexts containing an odor-related visual element. In contexts without a visual cue, rating of fit showed an influence of implicitly learned memories of odor. The rating was not aff

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20

Choi, Sung-Deuk. "Occurrence of Odor and Suggestions for a Comprehensive Management System in Ulsan, South Korea." Journal of Environmental Analysis, Health and Toxicology 25, no. 1 (2022): 43–49. http://dx.doi.org/10.36278/jeaht.25.1.43.

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In Ulsan, large-scale industrial facilities emit large amounts of various odors and hazardous air pollutants. This study investigated the current status of odor problems in Ulsan and suggested a comprehensive management system. Owing to the geographical conditions, weather conditions, major industrial complexes, and management of emission facilities, complaints about odor occur mainly in summer. The city authority responds to odor problems by preparing comprehensive measures to prevent odors and introducing unmanned sampling devices, real-time monitors, and a mobile monitoring system. Major od

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21

Burlingame, Gary A. "Odor Profiling of Environmental Odors." Water Science and Technology 40, no. 6 (1999): 31–38. http://dx.doi.org/10.2166/wst.1999.0254.

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There is a need to standardize a field procedure for odor profiling of environmental odors. There is a need to drive the analytical procedures toward a practical, useful method for profiling odors in contrast to highly complex instrumentation or lab-based techniques. A technique for profiling odors, and tracking odor sources will be outlined. An example of its successful use in profiling odors at a wastewater treatment plant will be described.

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G. Qu, I. E. Edeogu, and J. J. R. Feddes. "Odor Index: An Integration of Odor Parameters for Swine Slurry Odors." Transactions of the ASABE 53, no. 1 (2010): 219–23. http://dx.doi.org/10.13031/2013.29497.

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23

Ovaska, K. "Recognition of conspecific odors by the western red-backed salamander, Plethodon vehiculum." Canadian Journal of Zoology 66, no. 6 (1988): 1293–96. http://dx.doi.org/10.1139/z88-189.

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Lungless salamanders of the family Plethodontidae possess an elaborate system of glands that potentially can be used in chemical communication. I used an olfactometer to examine the behavior of adult male and female western red-backed salamanders, Plethodon vehiculum, towards airborne odors of conspecific individuals. In two-choice tests, P. vehiculum of both sexes chose the side with no odor over that with the odor of a male; however, they entered the sides at random when presented with no salamander odor on one side and the odor of a nonreproductive female on the other. Therefore, P. vehicul

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Syrjänen, Elmeri, Håkan Fischer, Marco Tullio Liuzza, Torun Lindholm, and Jonas K. Olofsson. "A Review of the Effects of Valenced Odors on Face Perception and Evaluation." i-Perception 12, no. 2 (2021): 204166952110095. http://dx.doi.org/10.1177/20416695211009552.

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How do valenced odors affect the perception and evaluation of facial expressions? We reviewed 25 studies published from 1989 to 2020 on cross-modal behavioral effects of odors on the perception of faces. The results indicate that odors may influence facial evaluations and classifications in several ways. Faces are rated as more arousing during simultaneous odor exposure, and the rated valence of faces is affected in the direction of the odor valence. For facial classification tasks, in general, valenced odors, whether pleasant or unpleasant, decrease facial emotion classification speed. The ev

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Janni, Kevin. "Reflections on Odor Management for Animal Feeding Operations." Atmosphere 11, no. 5 (2020): 453. http://dx.doi.org/10.3390/atmos11050453.

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Most animal feeding operation owners recognize that they need to manage odors from their operations as part of their social relationship with their neighbors and local community. That was not always the case. Odors, whether pleasant or unpleasant, can evoke strong emotions and physiological responses. Odors from animal feeding operations are normally considered unpleasant and offensive if strong smelling and smelled often or for long periods of time. Animal feeding operation owners need to be aware of their odor emissions and the impacts the odors have on their neighbors and community. Good ne

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Knaapila, Antti, Auri Raittola, Mari Sandell, and Baoru Yang. "Self-Ratings of Olfactory Performance and Odor Annoyance Are Associated With the Affective Impact of Odor, but Not With Smell Test Results." Perception 46, no. 3-4 (2016): 352–65. http://dx.doi.org/10.1177/0301006616672222.

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Our aim was to explore factors potentially associated with subjective (self-rated) and objective (measured using the Sniffin’ Sticks Extended test) olfactory performance in the general population without olfactory disorders. We studied associations between olfactory performance and how important odors were in determining liking for new places, things, and people (measured using the Affective Impact of Odor scale) and the average annoyance caused by odors in 117 adults (83 women, 34 men; age 18–69 years, mean age 32 years). In a subset of 44 participants, we also studied associations between ol

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Adinda Rizki Virginia, Arief Sabdo Yuwono, and Chusnul Arif. "Closed-House Biofilter Design and Performance Evaluation for Mitigating Environmental Odor Disturbances." International Journal of Engineering and Technology Innovation 14, no. 2 (2024): 165–76. http://dx.doi.org/10.46604/ijeti.2023.12851.

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Broiler-closed houses typically lack reduction technology, leading to environmental issues, namely odor. Processing technology can be used, namely biofilters. This study aims to design and construct a closed-house biofilter and perform a test on the biofilter to reduce odors. Odors are measured by the odor gas concentration (ammonia and hydrogen sulfide) and hedonic scale by the panel method. The biofilter consisted of an odor source (closed house), a humidifier, and a biofilter reactor. Factors that influence the size of the biofilter reactor from gas removal activities include air flow rate,

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Luisier, Anne-Claude, Genevieve Petitpierre, Annick Clerc Bérod, David Garcia-Burgos, and Moustafa Bensafi. "Effects of familiarization on odor hedonic responses and food choices in children with autism spectrum disorders." Autism 23, no. 6 (2018): 1460–71. http://dx.doi.org/10.1177/1362361318815252.

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This study assessed whether olfactory familiarization can render food odors more pleasant, and consequently food more attractive, to children with autism spectrum disorder. Participants were first presented with a series of food odors (session 1). Then, they were familiarized on four occasions (time window: 5 weeks) with one of the two most neutral odors (the other neutral odor was used as control) (session 2). In session 3, participants smelled the entire series of odors again. Both verbal and facial responses were compared from session 1 to session 3. After session 3, the children were prese

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Hasegawa, Toshio, Hiroaki Izumi та Hideo Yamada. "Structural Factors in the Odor of α-Santalol Derivatives". Natural Product Communications 8, № 7 (2013): 1934578X1300800. http://dx.doi.org/10.1177/1934578x1300800705.

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α-Santalol is a sesquiterpene that is a major constituent of sandalwood (Santalum album L.), and is responsible for its distinctive woody odor. We replaced the polycyclic moiety and hydroxyl group of α-santalol with other moieties, and we compared the odors of the E/Z-isomers and their saturated analogues. Our previous study of the structure-odor relationships of α-santalols bearing hydroxyl, formyl, formyloxy, and acetoxy functional groups showed there was a similarity in odor between the Z-isomer and its saturated analogue. We synthesized α-santalols with a benzyl group in place of the hydro

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Kanemaki, Reina, Kahori Kishigami, Mei Saito, Masafumi Yohda, and Yosuke Fukutani. "Harnessing Odorant Receptor Activation to Suppress Real Malodor." International Journal of Molecular Sciences 26, no. 4 (2025): 1566. https://doi.org/10.3390/ijms26041566.

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Mammals, including humans, sense smell by the responses of odorant receptors (ORs) to odor molecules. We have developed an effective method to identify novel antagonists capable of suppressing the pungent odor of cat urine by targeting specific ORs. Since odors are typically complex mixtures of multiple volatile compounds, olfactory perception can vary depending on the composition. We analyzed the response of ORs to cat urine odor using vapor stimulation assays to identify the responding ORs. Gas chromatography–mass spectrometry was then performed to identify compounds eliciting responses from

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Eltarkawe, Mohamed, and Shelly Miller. "Industrial Odor Source Identification Based on Wind Direction and Social Participation." International Journal of Environmental Research and Public Health 16, no. 7 (2019): 1242. http://dx.doi.org/10.3390/ijerph16071242.

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Industrial odors have been a major concern in many communities in Colorado (USA). Odor source identification is important for any mitigation strategy. The aim of this work was to identify odor sources using wind direction and odor data collected by social participation. For more than one year residents reported time, date, location and description of the odor occurrence by means of a smartphone technology. The odor spatial distribution and wind roses generated from local stations were used to identify odor sources. The majority of odor reports happened in North Denver (57%) and Greeley (33%).

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Meng, John Hongyu, and Hermann Riecke. "Structural spine plasticity: Learning and forgetting of odor-specific subnetworks in the olfactory bulb." PLOS Computational Biology 18, no. 10 (2022): e1010338. http://dx.doi.org/10.1371/journal.pcbi.1010338.

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Learning to discriminate between different sensory stimuli is essential for survival. In rodents, the olfactory bulb, which contributes to odor discrimination via pattern separation, exhibits extensive structural synaptic plasticity involving the formation and removal of synaptic spines, even in adult animals. The network connectivity resulting from this plasticity is still poorly understood. To gain insight into this connectivity we present here a computational model for the structural plasticity of the reciprocal synapses between the dominant population of excitatory principal neurons and in

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Houghton, David C., Samuel L. Howard, Thomas W. Uhde, Caitlin Paquet, Rodney J. Schlosser, and Bernadette M. Cortese. "Odor sensitivity impairment: a behavioral marker of psychological distress?" CNS Spectrums 24, no. 04 (2018): 404–12. http://dx.doi.org/10.1017/s1092852918001177.

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ObjectiveEnhanced odor sensitivity, particularly toward threat-related cues, may be adaptive during periods of danger. Research also suggests that chronic psychological distress may lead to functional changes in the olfactory system that cause heightened sensitivity to odors. Yet, the association between self-reported odor sensitivity, objective odor detection, and affective psychopathology is currently unclear, and research suggests that persons with affective problems may only be sensitive to specific, threat-related odors.MethodsThe current study compared adults with self-reported odor sens

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Hasegawa, Toshio, Haruna Seimiya, Takashi Fujihara, Noriko Fujiwara, and Hideo Yamada. "Aroma Profile of Star Anise and the Structure-odor Relationship of Anethole." Natural Product Communications 9, no. 2 (2014): 1934578X1400900. http://dx.doi.org/10.1177/1934578x1400900230.

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Star anise is an important fragrance material that has a characteristic anise-like odor. Although the main component of star anise is ( E)-anethole, which accounts for over 90% of the constituents, the odor of ( E)-anethole is different from that of the material itself. Here, we examined the aroma profile of star anise. GC-MS analysis of star anise extracts showed that it contains many compounds with structures similar to ( E)-anethole. Our results indicate that ( E)-anethole is the key compound in the odor of star anise, but structurally similar compounds play an important role in creating it

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Zhang, Bohan, Jianhua Xiong, Tianyu Zhao, et al. "The Influence of Key Elements in Black-Odor Water." Journal of Biobased Materials and Bioenergy 14, no. 3 (2020): 309–15. http://dx.doi.org/10.1166/jbmb.2020.1965.

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Currently, the progress for the treatment of black-odor rivers is not optimistic. One of the main reasons is that the public understanding of the influence of key elements for the formation of black-odor water still remains unclear. Studying the key elements in black-odor water is important to determine the water quality conditions, evolution process, and mechanism underlying the formation of black-odor water, as well as to quantify the degree of black-odor water. In this study, the effect of total organic carbon on dissolved oxygen (DO) and oxidation–reduction potential (ORP) values was studi

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Miyazawa, Yamato, Kenji Kawaguchi, Ryo Katsuta, Tomoo Nukada, and Ken Ishigami. "Studies on analogs of DAMASCENOLIDETM: Part 4. Synthesis and odor evaluation of sulfur-containing analogs of DAMASCENOLIDETM." Bioscience, Biotechnology, and Biochemistry 85, no. 6 (2021): 1357–63. http://dx.doi.org/10.1093/bbb/zbab032.

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ABSTRACT DAMASCENOLIDETM [1, 4-(4-methylpent-3-en-1-yl)furan-2(5H)-one], which is isolated from damask rose, is a useful aroma compound with a citrus-like odor. We have previously reported on the synthesis and odor properties of 34 analogs of 1 as part of our new aroma compound development project. In order to develop better aroma compounds and to gather more information on structure–odor relationships, 6 novel sulfur-containing analogs of 1 were synthesized. Odor evaluation revealed that their odors differed significantly from those of the corresponding sulfur-free compounds. The introduction

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Manesse, Cédric, Arnaud Fournel, Moustafa Bensafi, and Camille Ferdenzi. "Visual Priming Influences Olfactomotor Response and Perceptual Experience of Smells." Chemical Senses 45, no. 3 (2020): 211–18. http://dx.doi.org/10.1093/chemse/bjaa008.

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Abstract Whereas contextual influences in the visual and auditory domains have been largely documented, little is known about how chemical senses might be affected by our multisensory environment. In the present study, we aimed to better understand how a visual context can affect the perception of a rather pleasant (floral) and a rather unpleasant (damp) odor. To this end, 19 healthy participants performed a series of tasks including odor detection followed by perceptual evaluations of odor intensity, pleasantness, flowery, and damp characters of both odors presented at 2 different concentrati

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Li, Bingjie, Marissa L. Kamarck, Qianqian Peng, et al. "From musk to body odor: Decoding olfaction through genetic variation." PLOS Genetics 18, no. 2 (2022): e1009564. http://dx.doi.org/10.1371/journal.pgen.1009564.

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The olfactory system combines input from multiple receptor types to represent odor information, but there are few explicit examples relating olfactory receptor (OR) activity patterns to odor perception. To uncover these relationships, we performed genome-wide scans on odor-perception phenotypes for ten odors in 1000 Han Chinese and validated results for six of these odors in an ethnically diverse population (n = 364). In both populations, consistent with previous studies, we replicated three previously reported associations (β-ionone/OR5A1, androstenone/OR7D4, cis-3-hexen-1-ol/OR2J3 LD-band),

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Xu, Lucy, Jia Liu, Kristen E. Wroblewski, Martha K. McClintock, and Jayant M. Pinto. "Odor Sensitivity Versus Odor Identification in Older US Adults: Associations With Cognition, Age, Gender, and Race." Chemical Senses 45, no. 4 (2020): 321–30. http://dx.doi.org/10.1093/chemse/bjaa018.

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Abstract The ability to identify odors predicts morbidity, mortality, and quality of life. It varies by age, gender, and race and is used in the vast majority of survey and clinical literature. However, odor identification relies heavily on cognition. Other facets of olfaction, such as odor sensitivity, have a smaller cognitive component. Whether odor sensitivity also varies by these factors has not been definitively answered. We analyzed data from the National Social Life, Health, and Aging Project, a nationally representative study of older US adults (n = 2081). Odor identification was measu

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Lee, Brian K., Emily J. Mayhew, Benjamin Sanchez-Lengeling, et al. "A principal odor map unifies diverse tasks in olfactory perception." Science 381, no. 6661 (2023): 999–1006. http://dx.doi.org/10.1126/science.ade4401.

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Mapping molecular structure to odor perception is a key challenge in olfaction. We used graph neural networks to generate a principal odor map (POM) that preserves perceptual relationships and enables odor quality prediction for previously uncharacterized odorants. The model was as reliable as a human in describing odor quality: On a prospective validation set of 400 out-of-sample odorants, the model-generated odor profile more closely matched the trained panel mean than did the median panelist. By applying simple, interpretable, theoretically rooted transformations, the POM outperformed chemo

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Inoue, Tsuyoshi, Masayoshi Murakami, Satoshi Watanabe, Yasuko Inokuma, and Yutaka Kirino. "In Vitro Odor-Aversion Conditioning in a Terrestrial Mollusk." Journal of Neurophysiology 95, no. 6 (2006): 3898–903. http://dx.doi.org/10.1152/jn.00853.2005.

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We developed an in vitro odor-aversion conditioning system in the terrestrial mollusk, Limax, and found a behavioral correlate of network oscillation in the olfactory CNS. We first examined the odor-induced behavior of Limax, after odor-aversion conditioning in vivo. Shortening of mantle muscles was specifically observed in response to aversively conditioned odors. We previously identified that parietal nerves, which project to the mantle muscle in Limax, regulate shortening of the mantle muscle. We therefore isolated whole brains containing noses (sensory organs) and parietal nerves (motor ou

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Sówka, Izabela, and Leszek Karski. "Preliminary analysis of odor legal solutions and study on their implementation possibilities in Poland." E3S Web of Conferences 28 (2018): 01034. http://dx.doi.org/10.1051/e3sconf/20182801034.

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The problem of odor nuisance requires undertaking legal means that aim towards implementation of regulations in order to improve the odor-related quality of air in selected areas in Poland. So far the works carried out in the country were concluded by drawing up ‘The guidelines for the bill on counteracting the odor nuisance’. However, as a result of completed social consultations in Poland, the Ministry of Environment, in 2015, resigned from implementing of so called anti-odor act. Currently, the legislature is taking steps which aim at undertaking specific actions in order to introduce solut

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Rosenfeld, P. E., and I. H. Suffet. "Understanding odorants associated with compost, biomass facilities, and the land application of biosolids." Water Science and Technology 49, no. 9 (2004): 193–99. http://dx.doi.org/10.2166/wst.2004.0569.

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Odorous water and air can result from compost, biomass facilities and land application of biosolids. Common odorous compounds from these biodegradation systems include alcohols, aldehydes, fatty acids, solvents and various sulfur and nitrogen compounds. Each odorant possesses a unique individual odor signature i.e. odor character or quality, odor threshold concentration and chemical concentration. This paper develops an initial understanding of how the volatile odorous chemicals and their relative concentrations produced are related to the total odor quality from the process by their odor thre

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Stevens, Charles F. "A statistical property of fly odor responses is conserved across odors." Proceedings of the National Academy of Sciences 113, no. 24 (2016): 6737–42. http://dx.doi.org/10.1073/pnas.1606339113.

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I have reanalyzed the data presented by Hallem and Carlson [Hallem EA, Carlson JR (2006) Cell 125(1):143–160] and shown that the combinatorial odor code supplied by the fruit fly antenna is a very simple one in which nearly all odors produce, statistically, the same neuronal response; i.e., the probability distribution of sensory neuron firing rates across the population of odorant sensory neurons is an exponential for nearly all odors and odor mixtures, with the mean rate dependent on the odor concentration. Between odors, then, the response differs according to which sensory neurons are firi

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Chen, Chien-Fu F., Dylan C. Barnes, and Donald A. Wilson. "Generalized vs. stimulus-specific learned fear differentially modifies stimulus encoding in primary sensory cortex of awake rats." Journal of Neurophysiology 106, no. 6 (2011): 3136–44. http://dx.doi.org/10.1152/jn.00721.2011.

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Experience shapes both central olfactory system function and odor perception. In piriform cortex, odor experience appears critical for synthetic processing of odor mixtures, which contributes to perceptual learning and perceptual acuity, as well as contributing to memory for events and/or rewards associated with odors. Here, we examined the effect of odor fear conditioning on piriform cortical single-unit responses to the learned aversive odor, as well as its effects on similar (overlapping mixtures) in freely moving rats. We found that odor-evoked fear responses were training paradigm depende

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Schrader, Carl F. "THE SIGNIFICANCE OF ODOR COMPLAINTS AND AMBIENT ODOR MONITORING WHEN INVESTIGATING ODORS." Proceedings of the Water Environment Federation 2004, no. 3 (2004): 16–29. http://dx.doi.org/10.2175/193864704784327421.

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Bax, Carmen, Selena Sironi, and Laura Capelli. "Definition and Application of a Protocol for Electronic Nose Field Performance Testing: Example of Odor Monitoring from a Tire Storage Area." Atmosphere 11, no. 4 (2020): 426. http://dx.doi.org/10.3390/atmos11040426.

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Odor pollution is nowadays recognized as a serious environmental concern. Italy still lacks a national regulation about odors, but several regions issued specific guidelines and regulations regarding odor emissions management, which combine olfactometric measurements with dispersion modeling for assessing odor impacts and verifying compliance with acceptability criteria. However, in cases of variable or diffuse sources, this approach is sometimes hardly applicable, because odor emission rates can hardly be estimated. In such cases, electronic noses, or more generally, Instrumental Odor Monitor

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Cain, William S., Joseph C. Stevens, Connie M. Nickou, Amy Giles, Ingrid Johnston, and Maria Rosa Garcia-Medina. "Life-Span Development of Odor Identification, Learning, and Olfactory Sensitivity." Perception 24, no. 12 (1995): 1457–72. http://dx.doi.org/10.1068/p241457.

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In the first of three studies, children (aged 8 to 14 years) were found to perform worse than young and middle-aged adults in unprompted identification of odors, with average performance much like that of elderly adults. Comparisons on other tasks, specifically odor threshold, prompted odor identification, and object naming (Boston Naming Test), across the life span (five groups) revealed that children have the same excellent olfactory sensitivity as young adults and merely lack odor-specific knowledge that accumulates slowly through life. Such knowledge apparently accumulates so slowly that a

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Omatu, Sigeru, Hideo Araki, Toru Fujinaka, et al. "Mixed Odor Classification for QCM Sensor Data by Neural Network." ADCAIJ: Advances in Distributed Computing and Artificial Intelligence Journal 1, no. 2 (2013): 43–48. http://dx.doi.org/10.14201/adcaij2012124348.

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Compared with metal oxide semiconductor gas sensors, quarts crystal microbalance (QCM) sensors are sensitive for odors. Using an array of QCM sensors, we measure mixed odors and classify them into an original odor class beforemixing based on neural networks. For simplicity we consider the case that two kinds of odor are mixed since more than two becomes too complex to analyze the classification results. We have used eight sensors and four kinds of odor are used as the original odors. The neural network used here is a conventional layered neural network. The classification is acceptable althoug

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Smith, David G., Lionel Standing, and Anton de Man. "Verbal Memory Elicited by Ambient Odor." Perceptual and Motor Skills 74, no. 2 (1992): 339–43. http://dx.doi.org/10.2466/pms.1992.74.2.339.

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This study examined whether an ambient odor can act as a contextual cue for retrieval of verbal stimuli. Subjects ( N = 47) learned a list of 24 words while exposed to one of two odors (either jasmine incense or Lauren perfume) and subsequently relearned the list with either the same or the alternative odor present. Superior memory for the word list was found when the odor present during the relearning session was the same one that had been present at the time of initial learning, thereby demonstrating context-dependent memory. There were no differences in initial learning between the two odor

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