CFD-mass transfer model process in a vertical sedimentation tank

Currently, the world is actively developing a logical course to create hypothetical strategies for the calculation of tanks for sewage sump. At the same time, engineers usually use balance models and one-dimensional kinematic models. These models do not take into account the hydrodynamics of the flow inside the sump and its complex geometric shape. This can be a serious deterrent to the widespread use of Navier-Stokes conditions when refining a regular plan. The use of CFD models based on the formulation of Navier-Stokes conditions requires the use of a really thin network, which leads to critical computer time spent on obtaining predictive information. To this conclusion, it is fundamental to form an successful CFD show to think about the method of wastewater treatment in vertical settling tanks, taking into consideration their geometric shape and plan highlights. The plans of individual parts, carried out by the strategy of the current count, are used. A 2-D-CFD demo was created that allows a vertical settler to be calculated in a few seconds, taking into account its geometric shape, the proximity of the central pipe, its parameters, and the proximity of a divider that has recently exited the pipe. The application of the strategy for checking the calculated space in the constructed show makes it possible to carry out coordinate numerical simulation of the flow hydrodynamics and mass transfer in settling tanks without limiting their shape. Creation of CFD models that allow, on the one hand, to require into consideration the geometric shape of the sump, the most physical forms of mass exchange within the structure, and on the other hand - requiring small time to get comes about. The created CFD demonstrate and the code based on it permit, with a little consumption of computer time - approximately the same as when calculating a one-dimensional demonstrate, to illuminate complex multiparametric issues that emerge at the plan arrange of vertical settling tanks, considering their shape and design features

Results of a Joint Epizootiological Survey of Transboundary Natural Plague Foci of the Russian Federation and Potentially Focal Territories of the Republic of Kazakhstan in 2019–2022

Consolidation of the efforts in implementation of epidemiological surveillance and control over plague and other dangerous natural-focal infections is an essential aspect in ensuring epidemiological well-being as regards particularly dangerous infectious diseases in the territory of natural plague foci and potentially focal territories located within the borders of the Russian Federation and the Republic of Kazakhstan. The aim of the work was to carry out a joint epizootiological survey of the transboundary territories of the Volga-Ural sandy natural plague focus and the territory of the East Kazakhstan region of the Republic of Kazakhstan (RK) potentially focal for plague over the period of 2019–2022. Materials and methods. Samples of field materials, collected during the epizootiological survey of the territory of Kazakhstan, were studied using bacteriological, molecular-genetic, and immune-serological methods. Results and discussion. We have obtained the current evidence on the spatial-biocenotic structure, the circulation of pathogens of dangerous natural-focal infectious diseases in the transboundary territories of Eastern and Western Kazakhstan. It has been established that the conditions that contribute to the possibility of human infection with plague and other dangerous infectious diseases in case of the aggravation of epizootic situation in the foci or importation of the pathogens into the territory are in place

A Neuromedin U Receptor Acts with the Sensory System to Modulate Food Type-Dependent Effects on C. elegans Lifespan

Different food types modulate worm lifespan and involve the neuropeptide receptor NMUR-1, which acts with the sensory neurons in a bacterial lipopolysaccaharide structure-dependent manner

Cultivation Technology of Melony Tree Seedling in Cups with Artificial Substrates

This scientific article reveals experimental materials on the use of artificial substrates and their volumetric ratios for growing papaya seedlings in plastic cups of various sizes from 392 cm3, 2649 cm 3 As a result of scientific research to identify the optimal sizes of cups filled with artificial substrates, a positive effect on the development of papaya seedlings was revealed when they are grown in plastic bags with diameter and height of 15 cm, filled with sand and humus in the ratio of artificial components (sand-humus, sawdust, rice husk)1:3

Novel organometallic compounds for cancer treatment

Incorporating indole, resorcinol, and porphyrin derivatives into ferrocene and ruthenium complexes could improve their anticancer activity. These compounds are furnished with functional groups which are expected to induce programmed cell death and show high selectivity to cancer cells. Currently, they are at the stage of in vitro testing for anticancer activity

Novel organometallic compounds for cancer treatment

Incorporating indole, resorcinol, and porphyrin derivatives into ferrocene and ruthenium complexes could improve their anticancer activity. These compounds are furnished with functional groups which are expected to induce programmed cell death and show high selectivity to cancer cells. Currently, they are at the stage of in vitro testing for anticancer activity

Rational design of new chemical drugs based on compounds that block the pores in cell membranes

“Rational Drug Design” method is a new principle and methodology in producing pharmaceuticals based on precise and structure-oriented approach. The proposed method is based on principle of blocking the pores caused by Staphylococccus aureus (S. aureus) toxins in the membranes of host cells [1]. Design of β-cyclodextrin derivatives with precise geometry might be used for production of antibacterial and prophylactic pharmaceuticals against S. aureus infection