Results 31 to 40 of about 67,667 (314)

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

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

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

Smelling the wood from the trees: non-linear parasitoid responses to volatile attractants produced by wild and cultivated cabbage [PDF]

open access: yes, 2011
Despite a large number of studies on herbivore-induced plant volatiles (HIPVs), little is known about which specific compounds are used by natural enemies to locate prey- or host- infested plants.
Harvey, Jeffrey A.   +14 more
core   +1 more source

Volatility of Aggregate Volatility and Hedge Fund Returns [PDF]

open access: yesSSRN Electronic Journal, 2014
This paper investigates empirically whether uncertainty about equity market volatility can explain hedge fund performance both in the cross section and over time. We measure uncertainty via volatility of aggregate volatility (VOV) and construct an investable version through returns on lookback straddles on the VIX index.
Agarwal, V, Arisoy, Y E, Naik, N
openaire   +5 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

Stochastic Volatility of Volatility in Continuous Time

open access: yesSSRN Electronic Journal, 2009
This paper introduces the concept of stochastic volatility of volatility in continuous time and, hence, extends standard stochastic volatility (SV) models to allow for an additional source of randomness associated with greater variability in the data.
Barndorff-Nielsen, Ole, Veraart, Almut
openaire   +2 more sources

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