Computer Simulation of Stress-Strain State of Oil Gathering Pipeline Designed for Ugut Field

The paper presents the stress and strain state modeling of infield pipeline in Ugut oil field. The finite element models of the stress field distribution in the pipeline wall are presented in this paper. The attention is paid to the pipeline reliability under stress conditions induced by the internal pressure and external compressive or tensile loads

Comparative chloroplast genomics and phylogenetics of Fagopyrum esculentum ssp. ancestrale – A wild ancestor of cultivated buckwheat

<p>Abstract</p> <p>Background</p> <p>Chloroplast genome sequences are extremely informative about species-interrelationships owing to its non-meiotic and often uniparental inheritance over generations. The subject of our study, <it>Fagopyrum esculentum</it>, is a member of the family Polygonaceae belonging to the order Caryophyllales. An uncertainty remains regarding the affinity of Caryophyllales and the asterids that could be due to undersampling of the taxa. With that background, having access to the complete chloroplast genome sequence for <it>Fagopyrum </it>becomes quite pertinent.</p> <p>Results</p> <p>We report the complete chloroplast genome sequence of a wild ancestor of cultivated buckwheat, <it>Fagopyrum esculentum </it>ssp. <it>ancestrale</it>. The sequence was rapidly determined using a previously described approach that utilized a PCR-based method and employed universal primers, designed on the scaffold of multiple sequence alignment of chloroplast genomes. The gene content and order in buckwheat chloroplast genome is similar to <it>Spinacia oleracea</it>. However, some unique structural differences exist: the presence of an intron in the <it>rpl2 </it>gene, a frameshift mutation in the <it>rpl23 </it>gene and extension of the inverted repeat region to include the <it>ycf1 </it>gene. Phylogenetic analysis of 61 protein-coding gene sequences from 44 complete plastid genomes provided strong support for the sister relationships of Caryophyllales (including Polygonaceae) to asterids. Further, our analysis also provided support for <it>Amborella </it>as sister to all other angiosperms, but interestingly, in the bayesian phylogeny inference based on first two codon positions <it>Amborella </it>united with Nymphaeales.</p> <p>Conclusion</p> <p>Comparative genomics analyses revealed that the <it>Fagopyrum </it>chloroplast genome harbors the characteristic gene content and organization as has been described for several other chloroplast genomes. However, it has some unique structural features distinct from previously reported complete chloroplast genome sequences. Phylogenetic analysis of the dataset, including this new sequence from non-core Caryophyllales supports the sister relationship between Caryophyllales and asterids.</p

Asphalt, resin and paraffin deposits from pumping and compression oil pipes removal process modeling

© 2018 Institute of Physics Publishing. All rights reserved. This article deals with temperature calculation results on inner surface of oil pipes and melting of asphalt, resin and paraffin deposits side-wall layer

Features of participants’s training for the worldskills competitions

In this paper, there are discussed questions and features of college’s students’s training for their participation in regional, national and world WorldSkills championships. It is describe that such training should rely not only on traditional Russian methods of preparing participants for professional competitions, but also on WorldSkills standardsРассматриваются вопросы и особенности подготовки студентов системы СПО к участию в региональных, национальных и мировых чемпионатах WorldSkills. Показано, что такая подготовка должна опираться не только на традиционные российские методики подготовки участников к профессиональным конкурсам, но и на стандарты WorldSkill

Ethno-Religious Factors Of Generations Dynamics In The Multiethnic Region Of Russia

We have conducted study of the ethnic and religious factors in the context of the methodology of generational analysis. The research methodology is based on the works of authors such as K. Mannheim, S. Eisenstadt, M. Mead. Based on empirical data collected upon implementation of the project "Continuity and conflict of generations in the information, multi-ethnic, and multi-confessional society (using the material of the Republic of Tatarstan)" in 2013-2015., we revealed generational features of transmitting the ethnic and religious values in the multi-ethno-confessional region of Russia - the Republic of Tatarstan. The study used quantitative and qualitative methodology of sociologic research - a massive survey of population of the Republic of Tatarstan (N=1450 pers.), in-depth narrative interviews with several generations of the same family (N=30), and narrative essays by students of various universities of Kazan (N=500). Interpretation of the results made it possible to formul

The research of thermal processes of the automobile chassis

© TJPRC Pvt. Ltd. In this work some, the results of studying of the working processes of the automobile knots relating to the system of the chassis are offered. Features of operation of cardan transfer, the main transfer, differential and half shafts of the truck in difficult climatic conditions are in details considered. An assessment of the extent of influence of low temperatures of air on technical condition, durability and non-failure operation of work of knots of transmission is given. The factors defining a role of lubricants at change of service conditions in winter time are studied. The systematic approach, allowing revealing the communications essential to assessment of efficiency of operation is the basis for the conducted research. The natural and technical system, including the car, the road and the environment is the difficult object demanding a stage-by-stage research. Results of road tests of the trucks operated in various climatic conditions form a basis for such research. Reliable assessment of thermal balance of knots of the car is possible at accurate accounting of the modes of the movement of the car and loading of knots. The monitoring of a temperature condition of knots which is carried out in operation time allows establishing the rising temperature gradients in various directions. The obtained data form a basis for the transition from the medium-volume, temperature of knot to a set of temperatures in the set nodal points

Localized thermal cleaning method for pumping and compression pipes from asphalt, resin and paraffin deposits using plasma

© Published under licence by IOP Publishing Ltd.The article deals with temperature calculation results at the inner surface of oil-well tubing and side-wall melting of asphalt, resin and paraffin deposits

Mathematical modeling of the crystallization process to obtain a fine fraction aluminates

© Published under licence by IOP Publishing Ltd. Considered process of melt crystallization of the material in a twin-roll mold. Resolved an important problem of heat conduction through the wall of variable thickness, using the Fourier method and theorem Duhamel. Obtain theoretical dependence of the thickness of a frozen layer on the physical parameters of the melt and technological parameters of the crystallization process