Results 371 to 380 of about 826,562 (398)

Sampling Volatile Oil Wells

Proceedings of SPE Production and Operations Symposium, 2001
Abstract Recombined surface samples are usually used for volatile oil laboratory fluid property studies. A procedure for stabilizing and surface sampling of volatile oil wells is currently used in the industry. However, no investigation of the quality of the samples resulting from this procedure has ever been published ...
Ahmed H. El-Banbi, William D. McCain
openaire   +2 more sources

Volatility-of-Volatility Risk in the Crude Oil Market

SSRN Electronic Journal, 2019
Under the stochastic volatility-of-volatility framework, we show that oil volatility-of-volatility risk is a significant pricing factor for cross-sectional delta-hedged gains constructed from 1-month United States Oil Fund (USO) options, and is negatively priced.
Yahua Xu, Tai-Yong Roh
openaire   +2 more sources

New Volatile Molecular Markers of Rancidity in Virgin Olive Oils Under Non-Accelerated Oxidative Storage Conditions.

Journal of Agricultural and Food Chemistry, 2019
Evolution of the volatile profile of two extra-virgin olive oils with very different fatty acid composition (MUFA/PUFA ratio) stored in several non-accelerated oxidative conditions was studied by a validated HS-SPME-GC-MS method.
L. Cecchi, M. Migliorini, E. Giambanelli, A. Rossetti, A. Cane, N. Mulinacci   +5 more
semanticscholar   +1 more source

Oil Price Volatility [PDF]

WTO Working Papers, 2010
In recent years, our understanding of the nature of energy price shocks and their effects on the economy has evolved dramatically. Only a few years ago, the prevailing view in the literature was that at least the major crude oil prices increases were exogenous with respect to the OECD economies and that these increases were caused by oil supply ...
openaire   +3 more sources

Comparison of Furans Formation and Volatile Aldehydes Profiles of Four Different Vegetable Oils During Thermal Oxidation.

Journal of Food Science, 2019
The evolution of volatile aldehydes and the conversion of oxygenated ityβ-unsaturated aldehydes (OαβUAs) into furans were compared in four vegetable oils (soybean oil, olive oil [OVO], peanut oil [PO], and perilla oil [PAO]) thermally oxidized at ...
Yangling Wang, Mengting Zhu, Jiang Mei, Shuhan Luo, Tuo Leng, Yi Chen, Shaoping Nie, M. Xie   +7 more
semanticscholar   +1 more source

Electrometric titration of volatile oils and volatile oil isolates using lithium aluminum hydride

Journal of the American Pharmaceutical Association (Scientific ed.), 1950
The development of an electrometric lithium aluminum hydride titration procedure for the quantitative determination of certain functional groups has been described in a previous paper. In this report results of an investigation studying the feasibility of this method of analysis as applied to essential oils and essential oil isolates are presented ...
Carl J. Lintner, Takeru Higuchi, J.V. Swintosky, D.A. Zuck   +3 more
openaire   +3 more sources

Metabonomic analysis of the anti-inflammatory effects of volatile oils of Angelica sinensis on rat model of acute inflammation.

Biomedical chromotography, 2015
Metabonomics based on GC-MS was used to study the possible anti-inflammatory mechanisms of volatile oils of Angelica sinensis (VOAS) in rats with acute inflammation. Acute inflammation was induced by subcutaneous injection of carrageenan in rats.
Wen-quan Zhang, Yongli Hua, Man Zhang, Peng Ji, Jin-xia Li, Ling Zhang, Pengling Li, Yanming Wei   +7 more
semanticscholar   +1 more source

Anti-Leishmania Effects of Volatile Oils and Their Isolates

Revista Brasileira de Farmacognosia, 2021
P. Fampa, M. Florencio, Raissa Couto Santana, Dayana Rosa, D. C. Soares, H. L. de Matos Guedes, A. D. da Silva, D. Chaves, L. H. Pinto-da-Silva   +8 more
semanticscholar   +1 more source

Influence of agroclimatic parameters on phenolic and volatile compounds of Chilean virgin olive oils and characterization based on geographical origin, cultivar and ripening stage.

The Journal of the Science of Food and Agriculture, 2016
BACKGROUND This study involved two commercial orchards located in Limarí Valley and Molina from two important Chilean production zones of extra virgin olive oil (EVOO).
N. Romero, J. Saavedra, Francisco Tapia, B. Sepúlveda, R. Aparicio   +4 more
semanticscholar   +1 more source

Natural volatile oils derived from herbal medicines: A promising therapy way for treating depressive disorder.

Pharmacological Research, 2020
Yu-lu Zhang, Yu Long, Shuang Yu, Dan Li, Ming Yang, Yongmei Guan, Ding-kun Zhang, Jinyan Wan, Song-yu Liu, Ai Shi, Nan Li, W. Peng   +11 more
semanticscholar   +1 more source