Nighttime traffic risks have been thoroughly analyzed in the current work indicating the activities to be implemented to reduce the number of night accidents. It is shown that the normative standards for the brightness of street lighting in Armenia are rather low as compared to other countries. The types of luminaires providing the street lighting and their layout have to be assessed. Some measures have been presented to improve the driver’s field of vision, the defects of widely used luminaires and the consequent dangers have been clarified, as well as a safe road lighting scheme has been suggested.

The article considers the ways of road traffic improvement through the coordinated management system on Gayi Avenue. The system has been designed to reduce traffic delays, which could entail to positive results, suh as optimal speed, increased safety, reduced environmental pollution, traffic jam reduction, etc. As a result of the current research it has become obvious that there is an urgent need to implement an automated traffic control system in order to organize safe traffic in the main streets of Yerevan.

Currently, the use of various types of alternative motor fuels, such as natural gas, methane (in liquefied or compressed form) and liquefied petroleum gas (LPG), has become more common in the world. In addition, various studies are carried out on the application of biological, synthetic fuels, dimethyl ether, etc. The widespread use of each of these fuels in internal combustion engines has both advantages and disadvantages, measured not only in terms of economic attractiveness, but also in terms of environmental safety. This article provides a method for estimating the environmental efficiency of liquefied gas as a motor fuel in vehicles.

Within the frame of the current scientific article the production and economic indicators of the swine breeding branch in the economy of Armenia have been analyzed. The strategic role and significance of the branch development have been justified putting stress on the increase of self-sufficiecy level of the pork production in the republic. In the mentioned context the disclosure of the issues existing in the swine breeding branch of the RA has been considered as a priority, the solution of which will enable to increase the self-sufficiency level of pork in the country ensuring growth in the consumption sizes of the local pork production, as well as increase in the share of the local production within the overall structure of pork consumption.

Food prices are important in the context of meeting humans’ basic needs including diet. Therefore, this study aims to assess the cost of the average diet in the capital of Armenia, Yerevan, where one-third of the population resides. Consumption patterns were studied using a 24-hour recall survey amongst the Yerevan population considering the age range between 18 and 65. Overall, 1264 respondents from 12 districts of Yerevan have participated in the survey. Afterwards, the average cost of per capita monthly diet was calculated and theoretically compared with the healthy diet cost reported in the literature sources.

The aim of this paper is to present a perspective microbusiness opportunity by introducing new products for Armenian market. Those products are soymilk and tofu. They are plant-based dairy alternative products and are viewed as one of the best substitutes for dairy products. The scope of this paper examines a close-cycle production suggesting potential investors in this field to inhouse all the value-chain stages. Overall, 34200 USD of capital expenditure and 12400 USD investment in working capital is required to run a business. The calculations show that after 5 years this type of investment opportunity promises 67700 USD of NPV and 57.3 % of IRR with 1.8 years payback period.

The article considers the results of the studies conducted on the ecological and toxicological state of the waters in the Sotk and Masrik rivers under the influence of the Sotk mine exploitation. Upon the investigations it has been disclosed that along with the increase of the mining industry dimensions, as well as rock dump amounts, the organoleptic and chemical indices of the waters in the Sotk and Masrik rivers have also grown up. Due to heavy metals the amount of suspended particles per liter of water has increased over the last 10 years. Taking into account that individual heavy metals (tungsten, vanadium, molybdenum, etc.) are more active in the base medium, it is necessary to install filters for their refining

The article considers the content and distribution patterns of heavy metals in the soils of the Aragats mountain range. The presence of heavy metals in various types of soils and migration along the soil horizons have been established based on the results of the research study. According to the content of soils, heavy metals are arranged in the following row: Zn>Cu>Pb>Co>Mo>Cd. The content of gross and mobile forms of heavy metals in the soils varies unevenly from top to down depending on the nature of the metals. The correlation link between the content of humus, reaction of the environment, mechanical composition of soils, gross forms of nutrients and the content of metal forms (r=0.63±0.015 - 0.73±0.011) has been revealed.

Cereal bunts and smuts cause a huge damage to the cereal croplands. Various fungicides are usually applied for taking struggling measures against the wheat bunt but they have very often toxic effect on humans and animals. To struggle against the smuts and bunts a complex organo-mineral fertilizer (AFM) endowed with fungicidal properties has been recommended, which is allowed to use in the organic agriculture as well. The experimental results have disclosed that by soaking the cereal seeds with the solution of the mentioned fertilizer before the very start of sowing or even earlier, the possibility of the grain infection is prevented and economically justified yield is harvested. Thus, it is recommended to use the AFM as a means of seed disinfection.

The article considers the possible role of lactobacilli probiotics in protection of salmon against fish pathogens. The aim of this work is to study the viability of the potential probiotic Lactobacillus rhamnosus Vahe immobilized in salmon feed. Lactobacilli strains of human origin might have good probiotic efficacy in animals, including fish. According to this study, a decrease in viability (from 100 % to 78.00 ± 3.14 %) of the probiotic in feed biofilms was detected over a 2-month period. A simple procedure has been recommended that ensures viability of probiotics and can be applied for the evaluation of probiotic candidates in the future.

Bacteria belonging to the genus Staphylococcus and Salmonella are released as conditional causative agents, which can lead to the development of an infectious process with reduced general resistance of the human body. Egg surfaces of all the studied groups are infected with bacteria of the genus Staphylococcus, while the surfaces of the eggs in the 3rd group and factory eggs are infected with Salmonella. Studies confirm that before using eggs, it is necessary to wash them, especially when preparing fried eggs or soft-boiled eggs, since in these cases the yolk isn’t subjected to full thermal treatment. So, bacteria from outside can easily penetrate into the egg when breaking its shell.

In soil and carrot samples collected in the frame of this research from the same carrot beds in the rural community of Aramus, residual DDT and its isomers p,p′- DDT, p,p′-DDD, o,p′-DDT and p,p′-DDE were detected. In all soil samples, the total concentration of DDT exceeded maximum allowable concentration (MAC). In carrot samples, three isomers out of four were detected: p,p′-DDT, o,p′-DDT and p,p′-DDE, the total concentrations of which did not exceed MAC. The DDT/DDE ratio has indicated that the detected concentrations of DDT are due to historical usage of these pesticides. The bioconcentration factor (BCF) values vary in the range of 0.02-0.37.

The aim of this study is to assess the microbial safety of sliced sausage and cheese products sold in Yerevan. Microbiological indices defined by the Eurasian Economic Union (EAEU) technical regulations were studied in the products sampled from Nor Zovk, Yerevan City and SAS supermarkets. The results indicated that before being sliced in supermarkets, the studied food products met the established safety requirements. However, microbiological contamination was detected in 71.4 % of sliced sausage product samples and in 33.3 % of sliced cheese samples. Therefore, it can be concluded that cutting these food products at sale points can contribute to their microbial contamination, making these foods unsafe for consumption.