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The vibration theory of smell proposes that a molecule's smell character is due to its vibrational frequency in the infrared range. This controversial theory is an alternative to the more widely accepted docking theory of olfaction (formerly termed the shape theory of olfaction), which proposes that a molecule's smell character is due to a range of weak non-covalent interactions between its ...
In 1982, she joined the laboratory of Richard Axel, also at Columbia in the Institute of Cancer Research. After reading Sol Snyder's group research paper at Johns Hopkins University, Buck set out to map the olfactory process at the molecular level, tracing the travel of odors through the cells of the nose to the brain. Buck and Axel worked with ...
The Mind Lab, an independent consultancy in the UK, studies the odor of a building as part of research on the brain's responses to stimuli. [17] Real estate brokers have been recommending to their clients to have smells of freshly baked cookies or the aroma of coffee in the house when it is being presented to potential buyers to create a sense ...
Analytical chemistry consists of classical, wet chemical methods and modern analytical techniques. [2] [3] Classical qualitative methods use separations such as precipitation, extraction, and distillation. Identification may be based on differences in color, odor, melting point, boiling point, solubility, radioactivity or reactivity.
The odor detection threshold is the lowest concentration of a certain odor compound that is perceivable by the human sense of smell. The threshold of a chemical compound is determined in part by its shape, polarity, partial charges, and molecular mass. The olfactory mechanisms responsible for a compound's different detection threshold is not ...
A Connecticut man who allegedly killed a woman and her infant son in November targeted the woman because she owed him $400 for renting a vehicle of his, arrest reports said on Monday.
MEXICO CITY (Reuters) -Mexico is doing everything it can to protect a regional trade agreement with the U.S. and Canada, the Latin American nation's deputy economy minister said in an interview ...
Since 1982, [2] research has been conducted to develop technologies, commonly referred to as electronic noses, that could detect and recognize odors and flavors. The stages of the recognition process are similar to human olfaction and are performed for identification, comparison, quantification and other applications, including data storage and ...