Results 31 to 40 of about 79,952 (309)

Herbivory by a phloem-feeding insect inhibits floral volatile production [PDF]

open access: yes, 2012
There is extensive knowledge on the effects of insect herbivory on volatile emission from vegetative tissue, but little is known about its impact on floral volatiles.
Webster Ben   +33 more
core   +2 more sources

Volatile compounds from Rosmarinus officinalis L. and Baccharis dracunculifolia DC. Growing in southeast coast of Brazil

open access: yesQuímica Nova, 2010
Chemical composition of leaf volatiles of Rosmarinus officinalis and Baccharis dracunculifolia cultured in Southeast of Brazil has been characterized by GC/MS after simultaneous distillation-extraction.
Yilan Fung Boix   +3 more
doaj   +1 more source

Effectiveness of synthetic versus natural human volatiles as attractants for Anopheles gambiae (Diptera: Culicidae) sensu stricto [PDF]

open access: yes, 2010
Females of the African malaria vector, Anopheles gambiae Giles sensu stricto, use human volatiles to find their blood-host. Previous work has shown that ammonia, lactic acid, and aliphatic carboxylic acids significantly affect host orientation and ...
Knols, B.G.J.   +2 more
core   +1 more source

Sixty-One Volatiles Have Phylogenetic Signals Across Bacterial Domain and Fungal Kingdom

open access: yesFrontiers in Microbiology, 2020
Microorganisms are diverse in their genome sequences and subsequently in their encoded metabolic pathways, which enabled them to adapt to numerous environmental conditions.
Moamen M. Elmassry   +6 more
doaj   +1 more source

Good Volatility, Bad Volatility and Option Pricing [PDF]

open access: yesSSRN Electronic Journal, 2016
Advances in variance analysis permit the splitting of the total quadratic variation of a jump-diffusion process into upside and downside components. Recent studies establish that this decomposition enhances volatility predictions and highlight the upside/downside variance spread as a driver of the asymmetry in stock price distributions. To appraise the
Feunou, Bruno, Okou, Cédric
openaire   +2 more sources

Organic vs. Conventional Farming of Lavender: Effect on Yield, Phytochemicals and Essential Oil Composition

open access: yesAgronomy, 2023
Increasing prices and market demand for organic products are stimulants of organic farming. However, this sector is a challenge for producers and further improvements are still necessary.
Ana Dobreva   +5 more
doaj   +1 more source

THE FRACTIONAL VOLATILITY MODEL AND ROUGH VOLATILITY

open access: yesInternational Journal of Theoretical and Applied Finance, 2023
The question of the volatility roughness is interpreted in the framework of a data-reconstructed fractional volatility model, where volatility is driven by fractional noise. Some examples are worked out and, using the Malliavin calculus for fractional processes, an option pricing equation and its solution are obtained.
openaire   +2 more sources

Lactic Acid Salts of Nicotine Potentiate the Transfer of Toxic Metals into Electronic Cigarette Aerosols

open access: yesToxics
The designs and liquid formulations of Electronic Nicotine Delivery System (ENDS) devices continue to rapidly evolve. Thus, it is important to monitor and characterize ENDS aerosols for changes in toxic constituents.
R. Steven Pappas   +3 more
doaj   +1 more source

Recent Advances in Volatiles of Teas

open access: yesMolecules, 2016
Volatile compounds are important components of tea aroma, a key attribute of sensory quality. The present review examines the formation of aromatic volatiles of various kinds of teas and factors influencing the formation of tea volatiles, including tea ...
Xin-Qiang Zheng   +3 more
doaj   +1 more source

Effects of some biotic factors on activities of the volatiles emitted from rice plants infested by the rice brown planthopper, Nilaparvata lugens (Stal)

open access: yes浙江大学学报. 农业与生命科学版, 2004
Experiment was conducted in laboratory to study the effects of N. lugens damage levels, developmental stages of infested plants and rice cultivars on attractiveness of N.
MA Bo, LOU Yong-gen, CHENG Jia-an
doaj   +1 more source

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