In this paper, we examine the relationship between volatilities of energy index, crude oil, gas prices, and financial assets (Gold, Bitcoin, G7 stock indexes), especially during coronavirus crisis. The study tests presence regime changes in GARCH volatility dynamics indexes, Gold, (energy gas) by using Markov–Switching model. It estimates dynamic correlation spillover assets, multivariate MSGAR...

The paper discusses a fundamental method of accelerated bench tests for oil-injceted rotary compressor oils. The test compressor, test conditions and evaluated performance indexes of the oils are reasonably determined according to the results of bench tests and field services of the oils.

The hydrodistillated leaf essential oil of Neolitsea parvigemma was analyzed to determine its composition and yield. Sixty-two compounds were identified, the main components being beta-caryophyllene (14.2%), beta-eudesmol (12.9%), alpha-cadinol (10.2%) and tau-cadinol (8.8%). Oxygenated sesquiterpenes (48.9%) and sesquiterpene hydrocarbons (48.8%) were the predominant groups of compounds. The a...

A procedure for the determination of volatile compounds derived from lipid oxidation of fish muscle samples is presented. Analytes are concentrated on a solid-phase microextraction fiber employed in the headspace mode (HS-SPME), and selectively determined using gas chromatography in combination with mass spectrometry (GC-MS). The influence of several parameters on the efficiency of microextract...

The aim of this paper is to analyze the a priori dietary indexes used in the studies that have evaluated the role of the Mediterranean Diet in influencing the risk of developing cardiovascular disease. All the studies show that this dietary pattern protects against cardiovascular disease, but studies show quite different effects on specific conditions such as coronary heart disease or cerebrova...

Maintaining optimum quality and eliminating dates of contamination, cleanup and packaging to extend the shelf life is one of the country's priorities and policies. Edible coatings with vegetable oils are one way to prevent the growth of microorganisms. In this study, the influence of the coating with natural zein and chitosan polymers along with the essential oil of Roman anise on the microbial...

Oil from avocado seed was extracted via the AOAC standard method using n-hexane as extracting agent. The main physico-chemical properties evaluated for includes saponification value, free fatty acid, iodine peroxide acid value and refractive index. results revealed that (mg KOH/g), iodine/100g), (mg/peroxide/kg), Free acid(%), specific gravity index were found to be 150.348; 0.366; 3.81g/100g; ...

The success of the olive oil industry depends on provenance and quality-trait consistency affecting consumers' acceptability/preference purchase intention. Companies rely laboratories to analyze samples assess within production chain, which may be time-consuming, cost-restrictive, untimely obtaining results, making process more reactive than predictive. This study proposed implementing digital ...