Aim
. To study the associations of subclinical and clinical anxiety and depression, assesed by the Hospital Anxiety and Depression Scale (HADS), ≥8 points and ≥11 points, respectively, with all-cause ...mortality and cardiovascular mortality, as well as with the total number of nonfatal cardiovascular events (CVEs) in Russia.
Material and methods
. The study included male and female population aged 25-64 years from the Epidemiology of Cardiovascular Diseases and their Risk Factors in Regions of Russian Federation (ESSE-RF) study who signed an informed consent. The study included 16941 people (men, 6811 (40,2%)). To assess the anxiety and depression, HADS scale was used. The statistical analysis included individuals with subclinical/clinical (HADS ≥8) and clinical (HADS ≥11) anxiety and depression (HADS-A and HADS-D). The median of prospective follow-up was 5,5 years (from 2012 to 2019). The composite endpoint (CE) (cardiovascular death and nonfatal CVE occurred in 268 (4,2%) men and 203 (2,1%) women, while all-cause — in 220 (3,2%) men and 152 (1,5%) women.
Results
. The results obtained showed that the survival rate of men and women with varying degrees of anxiety (HADS-A ≥8 and ≥11) was associated with all-cause mortality and CE in women. However, this relationship has not been confirmed in multivariate models. In the multivariate Cox proportional hazards model 1 (M1), a significant association of depression with all-cause mortality in women was revealed — HADS-D ≥8: relative risk (RR), 2,22; 95% confidence interval (CI): 1,56-3,15 and ≥11: RR, 2,43; 95% CI: 1,65-3,59 (p<0,005), as well as in men — HADS-D ≥8: RR, 1,51; 95% CI: 1,10-2,08 (p=0,01). In model 2 (M2), when added to M1 as a predictor of prior cardiovascular disease (≥3), depression was significantly associated with all-cause mortality only in women — HADS-D ≥8: RR, 2,23; 95% CI: 1,53-3,24 (p<0,005); HADS-D ≥11: RR, 2,61; 95% CI: 1,74-3,92 (p=0,01). In addition, only in women, subclinical/clinical depression (HADS-D ≥8) was significantly associated with fatal and non-fatal CVE — HADS-D ≥8: RR, 1,46; 95% CI: 1,08-1,98 (p=0,02).
Conclusion
. Depression (HADS-D ≥8 and ≥11) in Russian women was significantly associated with all-cause mortality and CE (HADS-D ≥8). In men, depression (HADS-D ≥8) was significantly associated with allcause mortality when only conventional risk factors were included in the model, without taking into account prior cardiovascular disease. Anxiety in multivariate models was not associated with all-cause mortality and CE in both sex groups.
New computational realization of the modified operator perturbation theory method to computing the Stark resonances energies and widths for the non-hydrogenic (non-H) atomic systems in a DC electric ...field is presented. The method is based on the operator form of the perturbation theory of the Schrödinger equation for the non-H atomic systems and includes the physically reasonable distorted-waves approximation in the frame of the formally exact quantum-mechanical procedure. The Stark resonances energies and widths in the lithium atom are calculated and compared with results of calculations on the basis of the method of complex eigenvalue Schrödinger equation by Themelis-Nicolaides, the complex absorbing potential method by Sahoo-Ho and the B-spline-based coordinate rotation method approach by Hui-Yan Meng et al.
The treatment of infected, long-term, non-healing, complicated wounds of the skin and mucosa, trophic ulcers, pressure sores and ulcers of diabetic feet represents a serious problem, especially in ...the case of resistant and multi-resistant pathogens. Antibacterial photodynamic therapy can be a promising method of local infected foci treatment of such diseases. This work is devoted to the study of the possibility of photodynamic inactivation (PDI) of Pseudomonas aeruginosa bacteria in the form of biofilms with the help of new polycationic photosensitizers (PSs) based on octacationic phthalocyanine and tetra- and octabacteriochlorins (ZnPcChol8, (3-PyBrE)4BCBr4 and (3-PyEPy)4BCBr8). More specifically, this work aims to clarify the role of light irradiation in PDI with the participation of new PSs, which has not been fully studied, especially with respect to the comparison of different PS types.
THE PURPOSE
. A complex of various physico-chemical methods has been studied to explore the possibilities of reuse of oil residues (oil sludge) of low-sulfur high-paraffin oil deposits of the ...Mangyshlak peninsula (Kazakhstan) as a promising raw material for boiler and marine fuel with improved operational and environmental characteristics.
METHODS.
Determination of the conditional viscosity of oil sludge (in degrees Engler, ° E) was carried out using an Engler viscometer VU-M-PCP according to GOST 6258-85 «Petroleum products. The method of determining the conditional viscosity». Studies of the lowest working heat of combustion of oil sludge were carried out using an adiabatic bomb calorimeter ABK-1B (Russia) according to GOST 21261-91 "Petroleum products. Method for determining the highest heat of combustion and calculation of the lowest heat of combustion". Determination of the mass fraction of sulfur in the studied oil sludge was also carried out using an adiabatic bomb calorimeter ABK-1B (Russia) according to GOST 3877-88 «Petroleum products. Method of determination of sulfur by burning in a calorimetric bomb». To analyze the results obtained, data obtained using the nuclear magnetic resonance method were used. Proton NMR spectra were recorded on a Bruker AVANCE III NMR spectrometer operating at a frequency of 600.13 MHz for 1H and equipped with a highresolution inverse sensor for three cores (TXI, 5 mm). Data processing and analysis were performed using Bruker Topspin 3.6.1.
RESULTS.
It is shown that in terms of heat of combustion and viscosity properties at temperatures above 50 oC, this oil sludge is similar to boiler fuel oil M100. It was found that the use of carbonate sludge of chemical water treatment at a concentration of 0.1 wt. % allows you to further reduce the viscosity by 5-6% and reduce the sulfur content in the combustion products, without reducing the lower working heat of combustion of the oil product. The complex nature of the relationship between the width of NMR lines and viscous properties has been revealed, which may indicate the existence of associates of highmolecular paraffins even in slightly viscous liquid petroleum products. The nature and characteristic sizes of the resulting associates are discussed. It is shown that the addition of medium-distillate diesel fractions will make it possible to obtain a better fuel option for marine engines, gas turbine and boiler installations with a reduced amount of resinous-asphaltene substances, reduced viscosity values and solidification temperatures, high heat of combustion and low sulfur content.
С
ONCLUSION.
The conducted complex of physico-chemical studies has shown the possibility of using low-sulfur Mangyshlak oil sludge as a basis for obtaining fuel for marine engines, gas turbine and boiler plants, steam boilers and industrial furnaces.
Introduction. The search for methods to reduce the time of treatment of burns and wounds of the donor sites currently remains relevant.Aim. Objective of this retrospective study was to evaluate the ...effectiveness of local treatment of II–IIIA degree burns and donor site wounds with dressings based on allogeneic type I collagen.Material and methods. The study included 434 patients hospitalized in 2018–2021. Collagen dressings were used in 280 patients (234 with II–IIIA degree burns and 46 with donor site wounds); 154 patients of the comparison group received traditional treatment in accordance with the standards of care for burns. Patients did not differ statistically significantly in age and the area of burns (general, superficial, deep). Lyophilized, sterile dressings based on type I collagen (RC No. FSR 2009/06370 December 8, 2014) were manufactured in accordance with TU No. 9393-002-01967081-2008 by the Department for Tissue Preservation and Graft Manufacturing of our Institute. We compared the timing of wound epithelialization when using collagen dressings versus the conventional treatment, and the pain intensity in the donor sites as assessed by the visual analogue scale for pain.Results. The terms of complete epithelialization of II–IIIA degree burn wounds made 10 (7;12) days when collagenbased dressings were used, and 18 (14;20) days without collagen, the difference being statistically significant (p<0.001). Epithelialization of the donor site wounds took 9 (8;10) days with using collagen dressings, and 11 (10;12) days with conventional treatment (p<0.001). The visual analogue scale assessed pain intensity in the donor site wounds after collagen application was statistically significantly lower on days 1, 4, and 7 than in patients on conventional treatment (p<0.001, p<0.001, p=0.003, respectively).Conclusion. The use of dressings based on type I allogeneic collagen for the treatment of superficial burns and the donor sites reduces the time of re-epithelialization, decreases the pain intensity in the donor site wounds, which proves the greater efficacy of this treatment method.
The current paper has considered the results of sixty years of breeding work on winter durum wheat development, a new grain crop for the steppe arid conditions of the Don area. This breeding period ...was represented by five stages, each of them was characterized by the solution of various problems, by the development of methods for obtaining and using the initial material and, on its basis, varieties being urgent for the definite period. Throughout the history of breeding work there were developed 32 winter turgid and durum wheat varieties, 21 of which were zoned or included into the State List, 16 were protected by patents, 6 were studied at the SVT. There have been presented the study results of the varieties of different breeding stages according to their main economically valuable traits and properties, obtained in the trial ‘History of the breeding work’ with green manure fallow in 2015–2019. There have been identified their positive advantages and disadvantages in the breding process. Significant progress has been achieved in changing plant architectonics by reducing straw length on 39.3–45.2 cm, increasing the resistance to lodging on 1.3–1.4 points, improving the agrocenosis on 300–400 heads per m2, and increasing the harvesting index from 26.1 to 41.1%. Productivity due to productive breeding for 60 years increased on 3.37 t/ha or 66.3%, and the productivity potential of the modern short-stemmed varieties reached 10 t/ha and more. There has been found out that productivity improvement during breeding positively affected on adaptive properties (winter resistance, drought resistance, resistance to brown and yellow rust, powdery mildew) and the indices grain and pasta quality. There have also been indicated the problematic areas which require further intensive work not only in breeding, but also in a wider distribution of the winter durum wheat varieties in agricultural production.
Coleoptera, the largest insect order, appears to be subordinate to Diptera in the extent of colonization of the Arctic environment. Beetles comprise about 13% of the insect fauna of the tundra zone, ...yet in the high latitudes several of their families retain considerable levels of species diversity and play significant cenotic roles. The present communication reviews the circumpolar beetle fauna of the Arctic. Based on original data, literature sources and museum collections, with the use of extrapolations and analogies, the taxonomic and ecological diversity patterns of the suborders, series and families of Coleoptera are distinguished, the latitude-zonal distribution and the northernmost range limits of the species are analyzed, and their adaptations and cenotic relations are characterized.
Variants of solving the problem of collapse arch pressure on the support of an underground work by variational methods are presented. Ritter’s scheme is used as a basis. The interaction between the ...collapse arch and surrounding soil mass is described based on the “passport” of strength characteristics for rock soil. Most of the solutions are given in closed form. The numerical calculation results obtained by the limit analysis method for the maximum pressure on support in rock soil are close to the theoretical values.
PDF
