Assistant professor, Tashkent institute of irrigation and agricultural mechanization engineers, Tashkent, Uzbekistan
STUDIES OF TURBULENT FLOW CHARACTERISTICS OF DIVIDING OPEN WATER STREAMS
The movement of water in the areas of division of open streams has a particularly turbulent character. For a detailed study of river bed processes, it becomes necessary to identify the patterns of turbulent motion.
The aim of these studies was to study and determine the turbulent characteristics of the flow and to establish the relationship between the intensity of flow turbulence with the channel deformations observed.
Theoretical and experimental research methods, laboratory studies, field surveys of existing water intake units were used. When processing the results of experimental studies, the methods of mathematical statistics were used.
On a specially constructed hydraulic model, detailed experimental studies of the flow structure in the fission unit were carried out under conditions of rigid and eroded channels.
Detailed studies have revealed the kinematic structure of the flow in the section of flow division.
The nature of the change in the intensity of the turbulent characteristics of the flow in different sections of the fission unit in rigid and eroded channels is determined.
The relationship between the nature of the change in the flow turbulence intensity and the channel deformations observed in the division unit has been established.
Senior Lecturer, Karshi engineering-economics institute, Karshi, Uzbekistan
RECYCLING OF MUNICIPAL SOLID WASTE USING SOLAR ENERGY
The article proposes a solar installation for thermal processing of municipal solid waste and presents a method of technical and economic analysis of systems for processing municipal solid waste based on solar energy. The object of the research is a solar installation for thermal processing of municipal solid waste. The analysis of the heat balance of the developed solar installation was compiled and carried out, and the energy requirement for thermal processing of municipal solid waste was determined. The work uses the methods of the theory of heat and mass transfer and body balances of heat power and solar installations. The created solar installation for anaerobic fermentation of solid waste to obtain landfill gas and biofertilizers has been investigated. Balance methods of numerical and experimental studies of anaerobic fermentation of solid waste were used to analyze the results. A calculation has been made showing the energy efficiency of a solar installation for the processing of municipal solid waste using solar energy. Based on the research carried out, it was found that at an average heating temperature of 50-55 °C, 200-250 m3 of landfill gas was obtained from one ton of household waste.
Professor, Department of Civil Engineering, University of Moratuwa, Sri Lanka
NATURAL SCIENCE VS ARTIFICIAL SCIENCE
Nature is a huge teaching space that offers many lessons for those who take the time to reflect and discover. In decades ago, scientists and inventors studied characteristics of things in nature and came up with amazing technologies and products invented as a result of studying nature. However, in the recent past we forgot this simple fact and started ruling the nature. As a result, the human factor was deteriorating and more than inventions/ innovation, the disruptions have come in to the picture. This was evident immensely in recent past.
Sustainability has become the most important challenge not just for the present, but also for the decades to come. Scientifically-based solutions should drive technological innovations that enable compliance with the still-growing environmental constraints. Research in this particular field of interest is advanced from the physical, chemical, biological, lifecycle assessment, engineering, and materials science perspective, often leading to synergistic approaches. Decoding the nature will end up with marvelous creations, which can rebuild the lost link between nature and human and that will sure heal the world.
Head of Urban Planning department, Moscow State University of Civil Engineering, Moscow, Russia
PLANNING SUSTAINABLE URBAN TERRITORIES AND ITS ROLE IN THE LIFE CYCLE OF A CONSTRUCTION OBJECT
Ensuring sustainable urban development nowadays is a main aim of spatial and territorial planning in Russia and worldwide. Typically, the phase of urban and territorial planning process constitutes the first stage of the construction project life cycle. So, it represents a basic phase of the actual urban development pattern to implement sustainability principles and goals and allow feasible decision-making on the development and design of cities and buildings, since they are interdependent. Addressing the issue of street public places, such approach to urban design planning process provides public participation and democracy, urban policy for efficient land use, urban land value, business development aimed at ensuring sustainable life cycle and quality of all relative construction objects in the long term.
The area of my study is the development of scientific and methodological approaches to manage urban development problems executable on the first phase of urban and territorial planning, that is the first stage of the city construction objects life cycle, in Russia.