The article discusses issues related to the strength of the normal sections of reinforced concrete beams in which the steel reinforcement is completely or partially replaced by a carbon fiber rod arranged in two rows. Found that the strength of these beams is only 13% higher than that of the reference.
Keywords: concrete, steel, composite reinforcing, test samples, strength, failure modes, load level
The problem of formation of assortment of wood plants for the South-West of Rostov region. Proposed main and additional assortment of wood plants, including 159 species. In ассотимент included the most sustainable and eco-efficient exotic plants. The assortment includes species not damage the disease of family Betulaceae, toxic and invasive species (Amfora fruticosa, Ailanthus altissima, etc.).
Keywords: green building, assortment of woody plants, Rostov region, introduction
The article consider the problem of managing the operational reliability of thermal energy complex enterprises. To improve the efficiency of the organization of repair and reconstruction work will form the organizational and technical building systems. Simulation of complex organizational and technical building systems allows to find effective organizational and technical solutions, as well as to predict their possible development in a variety of situations, the probabilistic nature.
Keywords: operational reliability, organizational and technical building systems, modeling.
Article is devoted to strength calculations of compound designs. The deformed condition of a design from the blocks consisting of the basis in the form of a hexagonal plate, circular cylindrical cover rigidly connected with the basis is considered intense.
Keywords: plate, shell, the strength, the composite structure.
Article is devoted to strength calculations of compound designs. The deformed condition of the block under the influence of the external forces operating on a design, consisting of the basis in the form of the hexagonal plate which has been rigidly connected with the basis of a circular cylindrical cover is considered intense.
Keywords: plate, shell, the strength, the composite structure
Article is devoted to strength calculations of compound designs. The deformed condition of the block under the influence of any loading enclosed in its top is considered intense
Keywords: plate, shell, the strength, the composite structure
The article is devoted to the production of thermal efficiency of reinforced concrete construction. A complex technology and keeping warm concrete oformovannyh items in hot water, which reduces the cost of processing products.
Keywords: Concrete, hot concreting, water curing, temperature, energy
Article is devoted to strength calculations of compound designs. The deformed condition of the block under the influence of any loading enclosed in all its tops is considered intense
Keywords: plate, shell, the strength, the composite structure
The authors ground the expediency, prove the effectiveness and give an account of the basic points of rational technical decision about the use of a new resource-saving technology of inertial conveyor feeding of concrete mix and cement-sand grout to the point of placement while making concrete (cement-sand) cushions in the buildings with prepared or built-up roofings.
Keywords: roofing, concrete (cement-sand) cushions, concrete mix, concrete mix feeding, inertia conveyor, cost per unit of labor
The article represents the description of the construction of increment borer, its present modifications and additional devices. On the basis of the conducted survey the authors of the article defined the ways for improvement of the borer. Suggested technical solutions are at the stage of patenting
Keywords: Increment borer, preparatory works of forest logging, tree age, forest inventory, core.
The possibility of combination of wood barking and branches cutting within through technologies of timber industries is shown. Comparison of several such processes is made with the use of functional-technological analysis and hypothesis of expediency of creation of the process technology and equipment for simultaneous group wood barking and branches cutting is formulated.
Keywords: barking, branches cutting, through technologies, woodworking, timber industry
Questions of improvement of the organizational mechanism of interaction of participants of construction are considered. In the conditions of weakening of state regulation, self-regulation with its collective joint liability of members of SRO has to become one of the main regulators of activity in the monitoring system of quality of construction. Ensuring integration of local systems of quality management of participants of construction has to be carried out on the basis of the regulations including requirements to system of document flow, to procedures of transfer, acceptance and modification of the design and estimate documentation, structure of executive documentation, an order of survey of the hidden works, requirements to information interfaces between local IT.
Keywords: Self-regulation, the organizational mechanism, quality management system in construction
Alzheimer's disease is an incurable illness. It affects about half a million people in Russia, and due to the general trend towards aging of the population the number of Alzheimer's disease cases will steadily increase. Insoluble deposits of amyloid beta in the brain tissue (amyloid plaques) are the major morphological characteristic of Alzheimer's disease. It has been found that the increased concentration of copper in amyloid plaques results in copper ions bound to the protein. It is the presence of copper in the binding site triggers of the formation of amyloid plaques. Therefore, the study of the binding site in amyloid beta is of great scientific interest. The local atomic structure of the Cu(I) copper ion binding site in the amyloid beta peptide has been studied by means of XANES spectroscopy. Several model structures obtained by molecular mechanics and density functional theory (ADF code) have been tested. Theoretical analysis of X-ray absorption spectra based on the finite difference method implemented in FDMNES code was performed. An appropriate model structure of the Cu(I) copper ion binding site in amyloid beta peptide has been found.
Keywords: amyloid beta, binding site, Alzheimer's disease, the method of finite differences, Cu(I)
Damage control cables in electrical phenomenon is quite common. To prevent cable replacement great lengths in serviceable there is a way to repair it, previously requiring a definition of the place of damage. In this case, you must apply a number of methods to determine the place of circuit lived or their place of breakage. In this case, knowing the resistivity lived control cable can be determined by bridges DC. Methodology and methods of measurement of resistance lived control cables are discussed further in the article.
Keywords: Bridge DC, shops resistance, the sensitivity of the bridge
Features of a site of construction of constructions of seaport of Taman are considered. The settlement scheme of influence of new construction of point of loading on an existing complex of tanks is proved. The final and element model of a coastal zone with an arrangement of underground designs of existing and port constructions under construction is constructed. Results of calculation intense the deformed condition of the soil massif and construction designs are given.
Keywords: the pile bases, the soil basis, modeling, a deposit, intense the deformed condition.