Improving the Reliability of Power Supply Systems

The article considers the possibility of improving the reliability of power supply systems. It has proposed to use sectioning devices - recloses for organizing ATS and AR, under voltage protection, overcurrent protection, protection against single-phase earth faults, and connection of new consumers. The level of reliability and quality of power supply of the distribution network assessed, which is carried out according to the indicative indicators SAIFI, SAIDI, RNRE and ARAE, which characterize, respectively, the number and duration of outages in the network for the period under review, the relative efficiency of reconstruction and the average efficiency of the use of reclosers

Assessment of the microbial communities and their petroleum hydrocarbon transformation potential in the northern Caspian sea

Marine bacterial biodiversity is an immense library of tools which have a potential in bioremediation of oil spills [1]. Oil industry is flourishing in the Caspian Sea which is effecting local environment and we hypothesize that natural seeps and historical anthropogenic leaks have sustained indigenous microbial communities, including hydrocarbon-oxidizing microorganisms (Picture 1). Indigenous microbial communities of Northern part of the Sea and their overall metabolic potential have not been studied comprehensively. We aim to gain knowledge about the bacterial community, determine specific hydrocarbon degrading species and study their potential in bioremediation of oil-polluted Caspian Sea waters

Metacognition of organization members as the basis of learning strategy in higher school

© 2017 by IGI Global. All rights reserved. The concept of metacognition is used to study knowledge of knowledge, and mainly in cognitive psychology. According to the content; metacognition is an intelligent process related to memory, reflection and motivation. The problem, we research, concerns the fact that the content and the mismatch of employees views can lead to non-constructive activity that violates the effectiveness of an organization as a whole. The outcome of this study is a model that describe the characteristics of the organization through determination of the metacognitive skills of employees at different levels. The model takes into account the emotional colouring, different levels of metacognition inconsistency, characteristic of the organization effectiveness and various inconsistencies of metacognitions

US-CHINA CONFLICT OF INTEREST IN THE CONTEXT OF DEVELOPING THE ASIA-PACIFIC REGION

Purpose of the study: This article aims to study scenarios for the development of the Asia-Pacific region in the context of the US-China conflict of interest in this region. Methodology: The article is concerned with the conflict of interest between the United States of America and China in the context of the development of the Asia-Pacific region associated with activities of these leading actors of international relations in the Asia-Pacific region and the relevant integration structures and agreements. Main Findings: The authors of the article have analyzed the US-Chinese relations in the Asia-Pacific region and presented an overview of the international situation. Applications of this study: Special attention was paid to the expert discussion of scenarios for the probable development of the Asia-Pacific region in the immediate future, including the preservation of the existing state of affairs ("Status Quo"), the global Trans-Pacific and Trans-Atlantic Silk Road Partnership under the auspices of China, the creation of the Asia-Pacific free-trade zone and the "northern" space of economic partnership

Evaluation of the Efficiency of Detection and Capture of Manganese in Aqueous Solutions of FeCeOx Nanocomposites Doped with Nb2O5

: The main purpose of this work is to study the effectiveness of using FeCeOx nanocomposites doped with Nb2O5 for the purification of aqueous solutions from manganese. X-ray diffraction, energy-dispersive analysis, scanning electron microscopy, vibrational magnetic spectroscopy, and mössbauer spectroscopy were used as research methods. It is shown that an increase in the dopant concentration leads to the transformation of the shape of nanoparticles from spherical to cubic and rhombic, followed by an increase in the size of the nanoparticles. The spherical shape of the nanoparticles is characteristic of a structure consisting of a mixture of two phases of hematite (Fe2O3) and cerium oxide CeO2. The cubic shape of nanoparticles is typical for spinel-type FeNbO4 structures, the phase contribution of which increases with increasing dopant concentration. It is shown that doping leads not only to a decrease in the concentration of manganese in model solutions, but also to an increase in the efficiency of adsorption from 11% to 75%

Reconstruction of the history of a thermokarst lake in the Mid-Holocene based on an analysis of subfossil Cladocera (Siberia, Central Yakutia)

© 2017, Pleiades Publishing, Ltd. This paper presents the results of a cladoceran analysis of a sediment core with a lenght of 382 cm collected from a pingo in alas Khara Bulgunnyakh located in Central Yakutia. Based on the Cladocera analysis results, the formation of the lake had started during the Holocene climatic optimum ~6600 cal. yrs. BP. The analysis of changes in the species composition of subfossil cladoceran communities made it possible to identify, on the basis of cluster analysis, four statistically significant ecological zones. The period of optimal conditions for the Cladocera community is defined by a complex evened community structure and numerous cladoceran remains in the sediments accumulated between 6500 and 6000 cal. yrs. BP. The history of the thermokarst water body development and existence reconstructed on the basis of the subfossil cladoceran analysis was rapid and short

HPV-associated cervical cancer: Current status and prospects

Every year, 570,000 new cases of cervical cancer (CC) are diagnosed in the world, and 311,000 people die from this disease. CC is the fourth most common type of cancer and therefore the fourth leading cause of cancer death in women worldwide. Numerous data on the occurrence and development of cervical cancer indicate an association in most cases (up to 90 %) with human papillomaviruses (HPV) of high carcinogenic risk (HCR).CC prevention strategies are based on screening, and deaths from this oncopathology can be prevented through vaccination and treatment with early detection of the disease.In this review, much attention is paid to current issues of detection and prevention of HPV-associated pathologies, and cervical cancer in particular, aiming to summarize and analyze the latest international literature data on this issue. As a result of this study, it was shown that for countries implementing the National program of vaccination against HPV of high carcinogenic risk, a decrease in the incidence of both cervical pathologies of varying severity and other cancers associated with the HPV carriage was registered.While effective implementation of actual experience and future advances in human papillomavirus vaccine prophylaxis may make it possible for all countries to move to the high levels of vaccination coverage required to eliminate HPV-associated pathologies, the results also suggest that the path to complete cervical cancer elimination as a global public health problem can be extremely difficult due to a number of existing limitations

Template synthesis and magnetic characterization of FeNi nanotubes

Iron-nickel nanotubes consisting of 20% Ni and 80% Fe with an aspect ratio of about 100 were synthesized by electrochemical deposition in the pores of polyethylene terephthalate ion-track membranes. The main morphological parameters such as composition, wall thickness and structural characteristics were defined. Macro- and micromagnetic parameters of FeNi nanotubes were determined. © 2017, Electromagnetics Academy. All rights reserved

HPV-negative cervical cancer: a distinct type of the uterine cervix with poor prognosis

The real-time PCR method was used to study cervical scrapings from 116 patients with stag

Disease-free and overall survival of patients diagnosed with HPV-associated or HPV-negative cervical cancer

The real-time PCR method is used to study scrapings of cervical epithelium and outer portion of the cervix in 116 patients aged 24–79 years with stage I–IV primary cervical cancer. The comprehensive survey included colposcopy, cytological and histological analysis, detection and genotyping of high-risk human papillomavirus. In 84 patients (72.4%) the presence of human papillomavirus (HPV) of high carcinogenic risk (HCR) is found, in 32 patients (27.6%) the presence of the virus has not been inspected in the tumor. A significant decrease in the survival rate as well as the prevalence of the worst prognosis for patients with HPV-negative cervical cancer are shown