Analysis of the influence of the import substitution on the competitiveness of the agricultural production in Belgorod region

Анализ влияния импортозамещения продуктов питания на конкурентоспособность сельскохозяйственного производства в Белгородской област

Using reference materials of blast furnace slag, steelmaking slag, converter slag and fused fluxes when developing a procedure for analysis of slag-forming mixtures using inductively coupled plasma atomic emission spectrometry

Introduction. Slag-forming mixtures play an important role in obtaining metal without non-metallic inclusions. Required properties of slag-forming mixtures (SFMs) directly depend on their chemical composition, that is why control of individual component content in a mixture is an important stage in the technological chain of metallurgical production. At the present time, it is a common practice to use inductively coupled plasma atomic emission spectrometry (ICP-AES for analyzing SFMs, requiring sample preparation by alloying with alkali fluxes, which makes it impossible to determine potassium and sodium oxides in a sample. That is why it is necessary to work out a procedure for simultaneous determination of calcium, silicon, magnesium, aluminium, potassium, and sodium oxides by the method of ICP-AES, which would include quantitative transferring of all components into a solution. For that purpose, it is suggested to use microwave digestion of samples in autoclaves.The purpose was to develop a procedure for simultaneous determination of specified components of SFMs using ICP-AES after transferring the sample into a solution in an autoclave under conditions of microwave heating, and to certify it reference materials of slag and fluxes.Materials and methods. Compositional analysis of slag-forming mixtures was conducted using an atomic emission spectrometer with inductively coupled plasma «iCAP 6500 Duo»; sample digestion was conducted with the use of the microwave system «ETHOS PLUS». The following brands of SFMs were chosen as research objects: Melubir 9563 and Accutherm ST-SP/235AL4D; AlsifluxGS-C7; SRCP015, SRCP173P. For calibrating the spectrometer and controlling correctness of determining the specified components, the following reference materials were used: reference materials of blast furnace slag, steelmaking slag, converter slag, and fused fluxes, which have close chemical composition.Research results. An ICP-AES analysis procedure has been developed for calibrating the spectrometer and controlling correctness of determining CaO, SiO2 , MgO, Al2 O3 , K2 O, Na2 O in reference materials of blast furnace slag, steelmaking slag, converter slag and fused fluxes, which allows to establish target components of SFMs quickly and reliably

Role of state in formation and development of tourist cluster

Recently, the sphere of tourism has been paid a lot of attention from state structures and private sector. It is obvious that the increase of competitiveness of existing tourist regions and formation of new ones require the use of cluster approach. Successful realization of this approach requires direct participation of the state. The article views the current state of the tourism sphere in the Russian Federation, studies the topicality of cluster approach and tools of state policy in this issue, and determines the problems in formation and development of tourist cluster

Dynamics of the Free Surface of a Conducting Liquid in a Near-Critical Electric Field

Near-critical behavior of the free surface of an ideally conducting liquid in an external electric field is considered. Based on an analysis of three-wave processes using the method of integral estimations, sufficient criteria for hard instability of a planar surface are formulated. It is shown that the higher-order nonlinearities do not saturate the instability, for which reason the growth of disturbances has an explosive character.Comment: 19 page

Insurance as a Tool for Managing Risks in Agriculture

The article views the contradiction between necessity for agricultural reproduction of rational parameters for providing food security of the country and reduction of investments, primarily internal, into agrarian sphere of the economy. This condition causes the necessity for development of measures facilitating the stabilization of the sources for reproduction process in the sphere and its development. It was found that one of the most effective measures aimed at the solution of this problem is insurance. However, according to the analysis of current situation in Stavropol Krai, this tool didn’t achieve a lot of success. Taking into account the found drawbacks of the existing mechanism of agricultural insurance, the authors substantiated the necessity for unification of agricultural enterprises into societies of mutual insurance support for reproduction for the purpose of minimization of risks of reduction of profit, caused by the specifics of business in this sphere. Besides, the authors offer the mechanism for their functioning and the methodology for calculation of insurance rates, differentiated according to groups of husbandries as to the type of provided reproductional process, and developed the recommendations for increase of interest of enterprises in entering the societies of mutual insurance support for reproduction. DOI: 10.5901/mjss.2015.v6n5p22

Increased motor cortex excitability during motor imagery in brain-computer interface trained subjects

Background: Motor imagery (MI) is the mental performance of movement without muscle activity. It is generally accepted that MI and motor performance have similar physiological mechanisms. Purpose: To investigate the activity and excitability of cortical motor areas during MI in subjects who were previously trained with an MI-based brain-computer interface (BCI). Subjects and Methods: Eleven healthy volunteers without neurological impairments (mean age, 36 years; range: 24–68 years) were either trained with an MI-based BCI (BCI-trained, n = 5) or received no BCI training (n = 6, controls). Subjects imagined grasping in a blocked paradigm task with alternating rest and task periods. For evaluating the activity and excitability of cortical motor areas we used functional MRI and navigated transcranial magnetic stimulation (nTMS). Results: fMRI revealed activation in Brodmann areas 3 and 6, the cerebellum, and the thalamus during MI in all subjects. The primary motor cortex was activated only in BCI-trained subjects. The associative zones of activation were larger in non-trained subjects. During MI, motor evoked potentials recorded from two of the three targeted muscles were significantly higher only in BCI-trained subjects. The motor threshold decreased (median = 17%) during MI, which was also observed only in BCI-trained subjects. Conclusion: Previous BCI training increased motor cortex excitability during MI. These data may help to improve BCI applications, including rehabilitation of patients with cerebral palsy.Web of Science7art. no. 0016

Innovations for diagnostics and treatment of injuries and disorders of musculoskeletal system in Irkutsk Scientific Center of Surgery and Traumatology (to the 70th anniversary of Scientific Research Institute of Traumatology and Orthopedics)

The article summarizes experience and achievements of Irkutsk Scientific Research Institute of Traumatology and Orthopedics (now - Irkutsk Scientific Center of Surgery and Traumatology) over a 70-year period. The development of new methods of diagnostics and treatment and organization of health care for patients with traumatological and orthopedic pathology are highly influenced by the Institute. The team of Irkutsk Scientific Center of Surgery and Traumatology developed a new promising direction of combined tension-band osteosynthesis, substantiated organ-sparing endoprosthesis replacement, created new technologies of treatment of chronic osteomyelitis, developed concept of treatment of spinal trauma and spinal cord injuries, determined regularities of cross-system organization of physiological functions at the musculoskeletal system pathology, created original technologies and instruments for the treatment of musculoskeletal system traumas and disorders. Innovations created in ISCST include 330 patents. Irkutsk Scientific Center of Surgery and Traumatology was awarded Governor's Award in Science and Technics for the development and introduction in clinical medicine of new diagnostic and treatment methods and of candidate medicines in 2012 and 2013