scholarly journals Comparative assessment of biological activity of peloids of Ukraine of different genesis

2020 ◽  
pp. 467-471
Author(s):  
Konstantin ВABOV ◽  
Sergеy GUSHCHA ◽  
Khrystyna KOIEVA ◽  
STRUS Oksana ◽  
Boris NASIBULIN ◽  
...  
Keyword(s):  
Biological Activity ◽  
Hydrogen Sulfide ◽  
Physicochemical Parameters ◽  
Functional Organization ◽  
Morphological Form ◽  
Physicochemical Composition ◽  
White Rats ◽  
Sulfide Content ◽  
Hydrogen Sulfide Content ◽  
Positive Effect

The article presents the results of comprehensive studies of the influence of peloids from different geographic regions of Ukraine and different genesis on the course of experimental pathology. Methods:At the first stage of research we have determined the type of peloids these are medium-mineralized weakly sulfide magnesium-sodium silt peloids, low-ash organic sapropels, and peat low-mineralized high-ash sulfide-free peloids. Physicochemical parameters have been established: mass fraction of moisture, volumetric weight, hydrogen sulfide content, contamination with particles with a diameter greater than 0.25 × 10-3 m, shear stress, stickiness, specific heat capacity, the content of organic substances, colloidal complex, the concentration of water conduit ions (pH) , redox potential (Eh). In the second stage of the study, 55 white rats were examined for the state of the liverʹs detoxification function (by carrying out a metabolic test using sodium thiopental) and the morphological form of the liver in normal conditions and toxic alcoholic hepatosis. The toxic alcoholic hepatosis model was induced by daily (30 days) intragastric watering of animals with a 25% solution of ethyl alcohol. From the 15th day, the rats received a course of applications: a cake with the corresponding peloids was applied to the bare part of the back. Results: It was determined that the peloids used had a positive effect on animalsʹ condition, which was expressed in the restoration of the detoxification function of the liver and its structural and functional organization. The most substantial positive effect is observed when using silt-sulfide peloids, which, according to the authors, is due to the peculiarities of their physicochemical composition (increased content of magnesium, chlorides, sodium, as well as hydrogen sulfide). Conclusion: Based on the results obtained, it was concluded that the studied peloids meet the criteria for the quality of therapeutic peloids in terms of physicochemical parameters, biological activity, and expands the possibilities of their application in balneology. Keywords: liver, toxic alcoholic hepatosis, rats, peloids,

Hydrogen sulfide content in pregnant women with preeclampsia in late gestation and their newborns

2021 ◽  
Vol 66 (7) ◽  
pp. 396-400
Author(s):  
Irina Gennadievna Popova ◽  
O. G. Sitnikova ◽  
S. B. Nazarov ◽  
R. I. Sadov ◽  
I. A. Panova ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Late Gestation ◽  
Control Group ◽  
Uncomplicated Pregnancy ◽  
Hypertensive Disorders ◽  
Sulfide Content ◽  
Postnatal Adaptation ◽  
Group 2 ◽  
Hydrogen Sulfide Content ◽  
Group 1

We examined 70 women who were 22-40 weeks pregnant and their newborns. Of these, 15 women with moderate PE made up group 1, 22 women with severe PE-group 2, and 55 women with uncomplicated pregnancy without hypertensive disorders - the control group. Blood was collected from women when they were admitted to the clinic, and blood was taken from newborns for 3-5 days of life. The concentration of hydrogen sulfide was determined by the method of K. Qu et al [17]. There was a decrease in the level of hydrogen sulfide in the blood serum of women whose pregnancy was complicated by severe preeclampsia. In newborns born to mothers with preeclampsia, an increase in the concentration of hydrogen sulfide was detected in the blood, which is probably a compensatory reaction aimed at restoring vascular homeostasis during early postnatal adaptation.

The Research on Influence Factors and Control of Hydrogen Sulfide during Steam Drive

2014 ◽  
Vol 962-965 ◽  
pp. 736-740
Author(s):  
Feng Yan
Keyword(s):  
Hydrogen Sulfide ◽  
Experimental Studies ◽  
Influence Factors ◽  
Chemical Agent ◽  
Content Increase ◽  
Prevention Measures ◽  
Steam Drive ◽  
Rate Of Increase ◽  
Sulfide Content ◽  
Hydrogen Sulfide Content

This project carries out the research on influence factors of wells producing hydrogen sulfide in connection with the actual situation of producing hydrogen sulfide in Qi-40 steam drive process. Experimental studies have shown that: A. temperature is the main external factors of produce hydrogen sulfide, It will produce hydrogen sulfide when temperature is above 100°C, hydrogen sulfide content increase about 300ppm in average when the temperature increase per 20°C; hydrogen sulfide content will be in the greatest increase when temperature at the range of 160°C~180°C; the rate of increase in the levels of hydrogen sulfide will significantly reduce when temperature above 180 °C.B. Adding Chemical agent with surface activity can inhibit the release of hydrogen sulfide. C. Adding acid chemical agent will make the content of hydrogen sulfide increase. The experimental study also investigated hydrogen sulfide prevention measures.

scholarly journals Long-term immunity alterations in the employees of the high hydrogen sulfide content gas condensate processing facility

2021 ◽  
Author(s):  
OV Boiko ◽  
YuI Dotsenko
Keyword(s):  
Hydrogen Sulfide ◽  
Immune System ◽  
Immune Status ◽  
Phagocytic Index ◽  
High Hydrogen ◽  
Gas Processing ◽  
Processing Facility ◽  
Condensate Processing ◽  
Sulfide Content ◽  
Hydrogen Sulfide Content

The current measures for protection of the gas processing plant employees cannot fully prevent the impact of pollutants. Evaluation of the immune system is one of the methods for monitoring of the employees' health, and testing the system of measures used to improve the working conditions. The study was aimed to identify alterations in the immune status of the employees at the gas processing and high hydrogen sulfide content condensate processing facility depending on their working experience. The working environment and the employees' immune system were evaluated by standard methods. Pollutants were detected with the Bruel & Kjaer 1302 Multi-Gas Monitor, and the Tsvet-550 gas chromatographer. A total of 160 employees and 81 controls (blood donors of the regional blood transfusion station) were surveyed. The immune system was evaluated using the System 9000 Plus hematological analyser, Cyto FLEX LX flow cytometer, UNICO 2100UV specrophotometer, and KFK-3-03-ZОМЗ photometer. It was concluded that the existing complex of occupational and industrial hazards affects the immune status of the main production unit employees, which is reflected in the decreased CD20 levels and increased CD8 levels along with the constant levels of CD4. Correlations were revealed between the immuniglobuline level alterations, decrease in the phagocytic index and phagocytic number, as well in lysozyme activity, and the working experience. Pollutant exposure results in altered immunity of the employees, which could be considered the adaptation mechanism.

Vulcanization of Rubber Compounds

1940 ◽  
Vol 13 (4) ◽  
pp. 918-925 ◽  
Author(s):  
E. W. Booth ◽  
D. J. Beaver
Keyword(s):  
Zinc Oxide ◽  
Hydrogen Sulfide ◽  
Carbon Black ◽  
Physical Properties ◽  
Room Temperature ◽  
Appreciable Effect ◽  
Vacuum Oven ◽  
Rubber Compounds ◽  
Sulfide Content ◽  
Hydrogen Sulfide Content

Abstract 1. Rubber dissolves approximately one per cent of hydrogen sulfide when saturated at room temperature. 2. All types of commercial accelerators are retarded in rate of vulcanization as a result of treatment with hydrogen sulfide, and the retardation is directly proportional to the hydrogen sulfide content. 3. The physical properties of mercaptobenzothiazole types of accelerators and diphenylguanidine are not permanently affected by hydrogen sulfide, but dithiocarbamates, thiuram sulfides, aldehydeamines and litharge are permanently affected. 4. Rubber compounds containing mercaptobenzothiazole types of accelerators or diphenylguanidine, which have been treated with hydrogen sulfide and then degassed in a vacuum oven, show normal rate of vulcanization. Compounds containing aldehydeamines, litharge or carbon black show permanent retarding, even after degassing. 5. Increased zinc oxide or sulfur has no appreciable effect on the retardation. 6. Little or no zinc sulfide is formed as a result of treatment with hydrogen sulfide. 7. Hydrogen sulfide treatment of rubber compounds retards the rate of combination of sulfur with rubber. 8. In no case did hydrogen sulfide treatment improve the physical properties of the vulcanizate.

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