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Oil volatility

Xem 1-20 trên 88 kết quả Oil volatility
  • (bq) part 2 book "handbook of essentional oils" has contents: aromatherapy with essential oils, industrial uses of essential oils, encapsulation and other programmed release techniques for essential oils and volatile terpenes, essential oils used in veterinary medicine, trade of essential oils, storage and transport of essential oils,...and other contents.

    pdf433p bautroibinhyen18 21-02-2017 48 5   Download

  • This work compares the composition at different temperatures of gaseous phase of bergamot essential oil at equilibrium with the liquid phase. A new GC–MS methodology to determine quantitatively the volatile aroma compounds was developed.

    pdf11p vijiraiya2711 27-05-2020 3 0   Download

  • While different streams of literature exist investigating the relationship and the conditional correlation between oil import prices, oil returns volatility and stock market returns volatility. The period of the study runs from July 1997 until July 2017 with a monthly data. The objectives of the present paper are the following to investigate the order of the mean equation, the order (p,q) of the conditional variance and the order (r,s) of the Diag-BEKK model.

    pdf17p caygaocaolon11 18-04-2021 7 0   Download

  • The health-promoting effects attributed to olive oil, and the development of the olive oil industry have intensified the quest for new information, stimulating wide areas of research. This book is a source of recently accumulated information. It covers a broad range of topics from chemistry, technology, and quality assessment, to bioavailability and function of important molecules, recovery of bioactive compounds, preparation of olive oil-based functional products, and identification of novel pharmacological targets for the prevention and treatment of certain diseases....

    pdf522p ktct_1669 09-05-2012 102 19   Download

  • Essential oils (also called volatile oils) generally extracted by distillation from plants are hydrophobic liquids containing volatile aromatic compounds. The essential oils are widely used in perfumes, cosmetics as well as in food and drink as flavor additives. Some essential oils show multiple pharmacological activities and have been considered as the major active fractions of herbal medicines [1–3].

    pdf7p phannguyen05 12-04-2013 58 2   Download

  • The results also showed that total yield of volatile oils extracted from the dried microshoots prestored in 0.2 M sucrose produced 6.0% oil yield, which was very close to the quantity obtained in the wild mother plant and much greater than the oil yields extracted from the microshoots prestored in the other conservation treatments.

    pdf9p danhdanh11 09-01-2019 6 0   Download

  • Drug yield and volatile oil content and its components of Thymus vulgaris were investigated during the different growing periods under both lowland and mountainous conditions. The highest drug yields were obtained from lowland conditions during the post flowering stage.

    pdf6p aquaman27 15-01-2019 12 0   Download

  • The DIC technology was defined, patented and developed by Allaf et al. The application of this technology for extraction is one of the new extraction techniques which take short extracting time and reduce the consumption of solvent. The DIC was successfully applied for extraction volatile compounds and essential oils. It also has been effectively used for improving the yields of rapeseed oil extraction through the texturing impact. This paper presents a study of jatropha oil hexane extraction with DIC technology treatment as a pre-treatment process.

    pdf13p thiendiadaodien_9 04-03-2019 14 0   Download

  • Impact of commodity price risk on stock return remains an important forecasting parameters across stock markets of developed and emerging markets. In recent times the subdued oil price poses a challenge to the economic imbalance among oil producing countries, and thus non-oil diversification has been adopted as an economic solution.

    pdf20p viankara2711 04-12-2019 15 0   Download

  • The essential oil (EO) obtained from the leaves of thyme (Thymus vulgaris L.) grown in Vietnam was found to contain thymol (39.79 %), cymene (17.33 %), and γ-terpinene (13.45 %) as the main volatile components. The antimicrobial activities of this oil were screened against several food-borne bacteria and fungi species. Significant growth inhibition effects against food-borne bacteria Escherichia coli (E. coli), Staphylococcus aureus (S. aureus), Bacillus cereus (B. cereus), and Salmonella Typhimurium were observed using the standard disc diffusion method.

    pdf10p chauchaungayxua2 07-01-2020 17 0   Download

  • In this paper, the Cheung-Ng procedure and the rolling correlation method are used to examine how the connection between the crude oil market and the macroeconomic fundamentals of the 2000s differs from the 70s. Our findings show that the economic meltdown (e.g. 2007-08) becomes positively correlated with oil price changes. Indeed, from the 90s the role of oil supply shocks is attenuated compared with the role of aggregate demand to drive the oil price volatility. Hence, the US economic recession leads to rising oil price volatility in the long-term.

    pdf24p trinhthamhodang2 21-01-2020 20 0   Download

  • A field experiment entitled “studies on sources and levels of organic manures on yield, yield attributes and quality of black cumin” was conducted at RIOF, UAS, GKVK, Bengaluru during rabi 2017. The experiment was laid out in RCBD with 12 treatments replicated thrice and the cultivar used was Ajmer Kalonji-1. Results revealed that application of 125 per cent N equivalent through vermicompost recorded significantly higher seed yield and fixed oil yield (723 and 261 kg ha-1, respectively). This was attributed mainly by enhanced yield attributes like days to 50 per cent flowering (52.

    pdf7p nguathienthan3 27-02-2020 11 0   Download

  • Ocimum sanctum L. or “Tulsi” or Holy basil is a plant well known for its medicinal properties. This plant is rich in essential oil sequestered in peltate glands. The Tulsi is rich source of eugenol, methyl eugenol, chavicol, ursolic acid, rosmerinic acid and other phenolics and terpenes. Aloe barbadensis and Plantago ovata are plants rich in polysaccharides. These plants are very important medicinal plants. A. barbadensis is source of aloin which is used in various cosmetic products and P. ovata is the main source of Isabgol-Husk.

    pdf7p nguaconbaynhay4 22-03-2020 7 0   Download

  • This paper investigates the volatility transmission effect and conditional correlations among crude oil, stock market and sector stock indexes in Saudi Arabia. Using daily data from January 3, 2009 to March 21, 2012 and VAR-BEKK specification, we find significant volatility transmission between oil prices and Saudi stock market. Furthermore, our findings show that sector stock returns significantly react to oil prices changes. In addition, except telecom sector, the results show the presence of volatility transmission between stock market and sector stock market returns.

    pdf17p 035522894 13-04-2020 36 0   Download

  • Mentha spicata L. var. viridis oil (MVO) is a potent antifungal agent, but its application in the topical treatment is limited due to its irritancy and volatility. It was aimed to develop more efficient, chitosan-incrusted MVO microspheres with reduced volatility and lesser irritancy and to dispense it in the form of ointment. Simple coacervation technique was employed to microencapsulate MVO in chitosan matrix. Morphological properties and polymer cross-linking were characterized by scanning electron microscopy and differential scanning calorimetry, respectively.

    pdf11p caothientrangnguyen 09-05-2020 6 0   Download

  • Agricultural prices variation analysis is essential for the formulation of public policies and business decisions. Considering the strategic importance of olive oil for producers and consumers alike, as well as its potential economic and social benefits, this study aims to quantify the volatility of olive oil prices. The models are estimated using monthly data of olive oil prices (from January 1980 to February 2017) that was collected from IMF statistics. ARCH and GARCH models were used to estimate price volatility.

    pdf6p partimesinhvien 13-05-2020 22 0   Download

  • The study concluded that it is advisable to use the entropy indicator of diversification for strategic planning due to the need to optimize activities; focus on the production of high value-added products; relevance of risk reduction in case of instability of world energy prices volatility; strengthening the position of a multi-industry company. An indicator of geographic diversification may be used when there is a necessity of market control; access to new markets; strengthening positions in current markets.

    pdf7p partimesinhvien 13-05-2020 9 0   Download

  • In this paper, we investigate the integration of financial derivatives with crude oil prices. The novelty of our paper is its focus on the impact of energy related exchange related funds (exchange traded funds [ETFs]) on crude oil prices. In the previous studies this relationship was studied only between equity markets and crude oil markets however, ETFs are now a crucial tool for information dispersion. First, we examine price discovery of crude oil prices by utilizing causality tests.

    pdf12p partimesinhvien 13-05-2020 15 0   Download

  • Jujube extract is commonly used as a food additive and favoring. The unique jujube aroma and the mild sweet aroma of the extract are critical factors that determine product quality and effect consumer acceptability. The aroma changes with changes in the extraction condition, which is typically dependent on the characteristics of volatile oils in the extract.

    pdf11p vijiraiya2711 27-05-2020 10 0   Download

  • Porphyra tenera (Kjellman, 1897) is the most common eatable red seaweed in Asia. In the present study, P. tenera volatile oil (PTVO) was extracted from dried P. tenera sheets that were used as food by the microwave hydro‑ distillation procedure.

    pdf10p vijiraiya2711 27-05-2020 3 0   Download

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