The late sexual maturity in sturgeon and the absence of morphological differences between males and females makes sex discrimination difficult. Identification of sex at an early life stage is of high interest in caviar production because it allows efficient selection of females. In this study, the genome of 10 mature male and 10 mature female specimens of Persian sturgeon (Acipenser persicus...

We use the conditional autoregressive value at risk (CAViaR) model in combination with time-varying parameter vector (TVP-VAR) based connectedness approach to study systematic tail transmission considering two types of crude oil (Brent and WTI) also four refined petroleum products prices (gasoline, heating oil, jet fuel propane) from January, 17, 1997 December 11, 2020. For robustness purposes,...

ABSTRACT We introduce backtesting methods to assess Value-at-Risk (VaR) and expected shortfall (ES) that require no more than desktop VaR violations as inputs. Maintaining an integrated perspective, our methodology relies on multiple testing combine evidence the frequency dynamic evolution of violations, capture information a single threshold can provide about magnitude violations. Contribution...

The article touches upon the problems of water structure, its unique biological and physical properties that continue to raise a vital interest among scientists. structured has no admixtures, it much in common with liquids within cells animals plants. Molecules are not randomly scattered, but stick together make 
 single structure. Following assessment effective use biologically active wat...

the late sexual maturity in sturgeon and the absence of morphological differences between males and females makes sex discrimination difficult. identification of sex at an early life stage is of high interest in caviar production because it allows efficient selection of females. in this study, the genome of 10 mature male and 10 mature female specimens of persian sturgeon (acipenser persicus...

As we know, vascular plants (Tracheophyta) in general and crop require a defined amount of trace elements to ensure normal growth development. In many developed countries, some natural materials have been used as an addition for growing ornamental plants, vegetables, hydroculture plants. Vietnam, minerals support plant is still very limited. Meanwhile, the source raw territory Vietnam quite pop...