Abstract
Literature data show that flavonoids are involved in the prevention of noncommunicable diseases. To draw upon such data so as to formulate recommendations, one needs flavonoid consumption ...statistics. This paper seeks to evaluate flavonoid consumption among the workers of a chemical facility and uses data from 24-hour meal reports. The sample contained reports from 480 participants (n = 480, 75% of whom are male; aged 22-69). The flavonoid content of their meals was counted using the USDA and Phenol-Explorer (PE) databases as well as data from literature. The research team quantified the presence of specific flavonoids as well as the total flavonoid content of the diet. As part of the study, we evaluated the flavonoid sources in the total daily consumption, including beverages, fruits, and vegetables. Flavonoids mainly came from tea, fruit, and fruit drinks. The average total flavonoid consumption varied from 226 mg/day in females aged 30 to 39 to 464 mg/day in males of the same age group; regardless of the age category, catechins were the most consumed flavonoids. There was a positive correlation between a person’s degree, job, and daily average flavonoid consumption. This research produced data on the consumption of flavonoids among the workers of a chemical facility that could be of use when making dietary recommendations on such consumption.
—The fuming of copper smelting slag in a Vanyukov furnace by the products of methane conversion by oxygen, water vapor, and carbon dioxide in the temperature range 1473–1773 K is thermodynamically ...modeled. For this purpose, a technique is developed to describe the changes in the phase compositions in the systems under study during their bubbling as functions of the amount of an introduced reducing gas; this technique is characterized by cyclic calculations and the removal of the formed gases and metal phase from the working medium composition. The calculation results demonstrate that the interaction of the gas with melt oxides proceeds in two stages regardless of the melt composition. At the first stage, Fe
3
O
4
is reduced to FeO and ZnO, to Zn. Therefore, the content of Fe
3
O
4
and ZnO in the melt decreases and that of FeO increases. At the second stage, metallic iron appears and the content of iron and zinc oxides decreases. A significant influence of temperature on fuming is shown. When the temperature increases from 1473 to 1773 K, the fuming process is significantly intensified, which is accompanied by a fourfold decrease in the amount of the reducing gas required to achieve close degrees of zinc recovery. The gas composition weakly affects the process. The most effective reducing agent is shown to be the gas formed by the steam conversion of methane, which is due to the minimal costs of its production. The results obtained make it possible to predict the indicators of the process of fuming by methane conversion products and will be useful for creating new technologies.
Objective:To confirm dengue infection among Russian tourists returned from Southeast and Mexico in 2010-2013 with clinical signs of infection.Methods:Blood and serum samples from patients were ...collected.NSI antigen and human IgM/IgG antibodies to dengue virus were identified using commercial tests manufactured by "Standard Diagnostics,INC.",Korea.ELISA test was used for the quantitative analyses of human IgM/IgG antibodies to dengue virus( "Orgenics Ltd.",Israel).Viral RNA was delected using commercial real-lime PCR lesls manufactured by "Genome Diagnostics Pvt.Ltd.",India and "Vector",Russia.Genotypes of revealed dengue viruses were determined employing nucleotide sequencing and phylogenetic analysis of 5’-UTR of the viral genome.Results:A total of 98 collected blood samples were analyzed.Fifty samples were positive for at least one of four markers of dengue infection.IgM to dengue virus were revealed in 38 samples,in 25 samples IgM were combined with IgG.NSI antigen was detected in43 samples.22 serum samples were positive for dengue virus RNA.The majority of samples(12patients) from tourists returned from Thailand were positive for genotype 1 of dengue virus,2nd and 4lh genotype were identified each in 1 patient.Conclusions:Due to laboratory confirmed cases of imported dengue fever in Russia,the differential diagnosis of dengue is strictly recommended for tourists returning from endemic areas.
Tuber formation is a complex process comprising several stages: stolon formation and growth, induction of tuberization, tuber initiation, and tuber growth. This review considers successive stages of ...tuber formation and their hormonal regulation. Special attention is paid to the effects on tuber formation of such phytohormones as gibberellins, cytokinins, jasmonic acid, and auxins. Physiological and some molecular-genetic aspects of their action on tuber photoperiodic induction and initiation are discussed.
Many modern and future accelerator and cosmic ray experiments require identification of particles with Lorentz γ-factor up to 104 and above. The only technique which reaches this range of Lorentz ...factors is based on the transition radiation detectors (TRD). This paper describes the development of a TRD based on straw proportional tubes. A prototype of such kind of detector was built and tested at the CERN SPS accelerator. Monte Carlo simulation model of the detector which matches well the experimental data was developed. This program was used for the simulation of a full-scale TRD for hadron identification at TeV energy scale.
Ferronickel, currently obtained from oxidized nickel ores in various aggregates, contains from 5 to 20% of Ni. According to experiments, rich ferronickel (with a content of Ni of about 70%) can be ...obtained from the melt of silicate-nickel ore treated with reducing gas. The thermodynamic modeling of metallurgical processes, adapted to open systems, is used to consider the features of reducing the high-iron nickel ore from the Serovskoye deposit with carbon monoxide. The oxide melt composition used for the calculations includes 60.4 wt % of Fe
2
O
3
, 1.4 wt % of NiO, 0.14 wt % of СоО, 5.8 wt % of А1
2
O
3,
17 wt % of SiO
2
, 4.2 wt % of MgO, and 11.1 wt % of CaO. The simulation was carried out at a pressure of 0.1 MPa, an amount of carbon monoxide of 10.6 dm
3
/kg per portion, and temperatures of 1673, 1723, 1773 K. During calculations, dependencies are found that connect the content of nickel (
C
NiO
), iron (
C
FeO
) and cobalt (
С
СoО
) oxides in the oxide melt and metals in the alloy (
С
Ni
,
С
Fe
,
С
C
o
), as well as their transition degree from the metallic state (φ
Ni
, φ
Fe
, φ
Co
) to the amount of introduced gas. The component contents in one portion of reduced metal are determined. At temperatures of 1673 to 1773 K and an introduced amount of CO of 190 dm
3
/kg, the respective content of Fe
2
O
3
, Fe
3
O
4
, FeO, NiO, and CoO in the oxide melt is 0.17 to 0.12%, 1.77 to 1.05%, 55.6 to 56.5%, 0.026 to 0.037%, and 0.061 to 0.068%. At a nickel reduction degree of 98%, the respective degrees of iron and cobalt reduction are 5 and 56 to 61%. An alloy formed from the reduced metals contains about 30% of Ni, 63 to 65% of Fe and 2% of Co. Thus, it is shown that the selective reduction of nickel and cobalt is possible in certain conditions. The findings from the study are significant to validating the parameters of the production process of ferronickel from oxidized high-iron nickel ores.
Global polarization of Λ hyperons has been measured to be of the order of a few tenths of a percent in Au+Au collisions at √SNN = 200 GeV, with no significant difference between Λ and Λ¯. These new ...results reveal the collision energy dependence of the global polarization together with the results previously observed √SNN = 7.7 – 62.4 GeV and indicate noticeable vorticity of the medium created in non-central heavy-ion collisions at the highest RHIC collision energy.
The Λ (Λ¯) hyperon polarization along the beam direction has been measured in Au+Au collisions at sNN=200 GeV, for the first time in heavy-ion collisions. The polarization dependence on the ...hyperons' emission angle relative to the elliptic flow plane exhibits a second harmonic sine modulation, indicating a quadrupole pattern of the vorticity component along the beam direction, expected due to elliptic flow. The polarization is found to increase in more peripheral collisions, and shows no strong transverse momentum (pT) dependence at pT greater than 1 GeV/c. The magnitude of the signal is about 5 times smaller than those predicted by hydrodynamic and multiphase transport models; the observed phase of the emission angle dependence is also opposite to these model predictions. In contrast, the kinematic vorticity calculations in the blast-wave model tuned to reproduce particle spectra, elliptic flow, and the azimuthal dependence of the Gaussian source radii measured with the Hanbury Brown–Twiss intensity interferometry technique reproduce well the modulation phase measured in the data and capture the centrality and transverse momentum dependence of the polarization signal.
The results of studies in which the relationship of the self-organization, physicochemical properties, and bioeffects in dilute aqueous solutions of various biologically active substances sustained ...under natural and reduced levels of external physical fields (geomagnetic and low-frequency electromagnetic), as well as under exposure to ionizing radiation solutions studied by the complex of physicochemical methods, are considered. The established patterns can be used to create a scientific base related to the clarification of the mechanisms of the negative influence of hypomagnetic conditions on the functioning of living organisms necessary to ensure the normal operation of the ecosystem of spacecraft during flights.
PDF
