scholarly journals Road Impregnating Materials, as an Effective Tool for the Protection and Restoration of Asphalt Pavement

2021 ◽  
Vol 334 ◽  
pp. 02002
Author(s):  
Marina Vysotskaya ◽  
Eugenia Vlasova ◽  
Svetlana Shekhovtsova ◽  
Victoria Vasilyeva
Keyword(s):  
Service Life ◽  
Mechanism Of Action ◽  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Federal District ◽  
Road Asphalt ◽  
Central Federal District ◽  
The Subject ◽  
Operational Factors

The paper considers the problem of increasing the service life of road asphalt concrete coatings in conditions of year-round operation by road impregnating materials protection from the effects of climatic and operational factors. Objects of research are various domestic road impregnating materials. The subject of research is estimation methodology of road impregnating materials efficiency, modeling effects of the exposed asphalt during operation in the Central Federal District. The article proposes method of estimation of the impregnating materials resistance to different operational factors and consistent scheme of their impact on the object under study is proposed. We conducted comprehensive assessment of road impregnating materials and the effect of their influence on indicators of quality of asphalt concrete and proposed the mechanism of action to protect road impregnating materials.

scholarly journals Karakteristik Marshall Pada Campuran Asphalt Concrete – Wearing Course (AC-WC) Dengan Penambahan Styrofoam

2019 ◽  
Vol 8 (2) ◽  
pp. 51-62
Author(s):  
Ika Sulianti ◽  
Ibrahim Ibrahim ◽  
Agus Subrianto ◽  
Adelia Monita ◽  
Medici Medici
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Flexible Pavement ◽  
Asphalt Mixtures ◽  
Concrete Mixture ◽  
Pavement Performance ◽  
Food Container ◽  
Optimum Stability ◽  
Marshall Test

Styrofoam waste presents the environment issue because it is difficult to decompose. As an effort to recycle this pollutant, styrofoam can be utilized as an additive in asphalt concrete mixture. The use of additives aims to create a flexible pavement layer having good performance and meet the requirements. The purpose of this study is to find out whether the addition of styrofoam can improve the quality of asphalt mixtures, and look for alternative additives that can increase asphalt pavement performance. In this study, researchers used food container styrofoam as an addition and incorforated into Asphalt Concrete Wearing Course (AC-WC) mixture. The styrofoam content was 6.5%; 6.75%; 7% ; 7.25%; and 7.5% of asphalt weight. The optimum asphalt contentused is 5.5%. The value of the optimum stability was 3126,002 kg, found at 7.25% of styrofoam content. The best results of Marshall test was obtained at 6.5% of styrofoam content  with stability value  1362,045 kg, VIM value 4,96%, VMA 15,025%, VFA 67,800%, flow 3,44 mm, and MQ 416,338 kg / mm.

scholarly journals Geographical assessment of region’s parameters

2021 ◽  
Vol 885 (1) ◽  
pp. 012024
Author(s):  
N A Ivanishcheva ◽  
A V Sedova
Keyword(s):  
Qualitative Methodology ◽  
Federal District ◽  
Point Of View ◽  
Analytical Assessment ◽  
The Subject ◽  
The Russian Federation ◽  
Definition Of ◽  
Scientific Environment ◽  
Socio Economic Factors

Abstract The variety of geographical studies of a region is as great as the diversity of its “portrait” – characteristics and phenomena associated with it. A region has never been considered in isolation from its synonymous concept “district”. The most common interpretations of ‘region’ in the scientific environment and in the information space, its generally accepted definition remains the subject of scientific research, disputes and discussion. In accordance with the tradition established in recent years, the minimum administrative-territorial area in the territory, called a region, is a constituent entity of the Russian Federation. The article analyses foreign and domestic studies of the definition of a region, clarifies the author’s interpretation, and evaluates the parameters of the territorial taxon. The main problems of common features of the visualization of a region, its attractiveness, socio-economic factors of the vital activity of the population (standard of living, living conditions, quality of life), attitude to their region from the point of view of substantiation of their genesis and subjectivity of parameters are formulated. The article presents the results of a sociological survey conducted within the framework of quantitative-qualitative methodology among the respondents of the Volga Federal District. The analytical assessment of the most mass responses of the survey participants is given, visualized in the form of graphs.

scholarly journals Fatores interferentes da qualidade do sangue de cordão umbilical/placentário para transplante autólogo: revisão integrativa

2019 ◽  
Vol 87 (25) ◽  
Author(s):  
Luísa Perissé ◽  
Paula de Araújo Nicolini Rosa ◽  
Cristiano Bertolossi Marta ◽  
Elzeni dos Santos Braga
Keyword(s):  
Umbilical Cord ◽  
Umbilical Cord Blood ◽  
Storage Temperature ◽  
Clinical Protocol ◽  
Continuous Training ◽  
Good Practices ◽  
The Subject ◽  
Operational Factors ◽  
Collection Practices

Esse estudo tem como objeto os fatores que podem influenciar na qualidade do SCUP e como objetivo apontá-los e defini-los, seguidos da análise de boas práticas na coleta de SCUP, sintetizando, em seguida, informações acerca de boas práticasde coleta. Metodologia: Trata-se de uma revisão integrativa, norteada pela metodologia PICO. As buscas foram realizadasno Portal da BVS e foram selecionados 15 artigos que abordam a temática. Resultados: Os autores apontam para a associação entre o maior volume de SCUP coletado e o maior número de células nucleadas totais obtidas. O volume da coletapode ser influenciado pelo peso da placenta, via de parto, tamanho do cordão umbilical, peso e idade gestacional do RN,e também está associado a fatores operacionais, como manuseio incorreto da placenta e cordão umbilical. O número decélulas nucleadas totais também está associado ao intervalo entre coleta e processamento, via de parto e à temperatura dearmazenamento durante o transporte. Conclusão: Para obter-se uma coleta de qualidade, deve-se coletar o maior volumepossível, reduzir o intervalo entre coleta e processamento e observar as boas práticas de coleta. O aperfeiçoamento datécnica de coleta pode ser obtido através de um programa de capacitação contínua dos coletadores.Descritores: sangue de cordão umbilical, protocolo clínico, coletadores, qualidade ABSTRACTThis study has as object the factors that can influence the quality of the SCUP and aim to identify and define them, followedby the analysis of good practices in the collection of SCUP, then synthesizing information about good practices of collection. Methodology: This is an integrative review, guided by the PICO methodology. The searches were carried out in theVHL Portal and 15 articles were selected that address the subject. Results: The authors point to the association betweenthe highest volume of SCUP collected and the highest number of total nucleated cells obtained. The volume of the collection can be influenced by the weight of the placenta, tract of delivery, umbilical cord size, weight and gestational age ofthe newborn, and is also associated with operational factors such as incorrect placenta and umbilical cord management.The number of total nucleated cells is also associated with the interval between collection and processing, delivery routeand storage temperature during transport. Conclusion: In order to obtain a quality collection, one must collect as muchvolume as possible, interval between collection and processing and observing good collection practices. The improvementof the collection technique can be obtained through a continuous training program of the collectors.Descriptors: umbilical cord blood, clinical protocol, collectors, quality

ПЛЕМЕННАЯ ЦЕННОСТЬ БЫКОВ, ОЦЕНЕННЫХ ПО ГЕНОМУ И КАЧЕСТВУ ПОТОМСТВА

2019 ◽  
pp. 7-10
Author(s):  
E.I. SAKSA ◽  
K.V. PLEMYASHOV ◽  
E.S. MASLENNIKOVA
Keyword(s):  
Federal District ◽  
Breeding Value ◽  
Leningrad Region ◽  
Genomic Breeding ◽  
Foreign Companies ◽  
Central Federal District ◽  
The Us ◽  
Genomic Breeding Value ◽  
Domestic Breeding

The purpose of this article was to compare the results of evaluating the breeding value of bulls, evaluated by the genome and the quality of the offspring. For analysis, we used data on the genetic value of bulls belonging to foreign companies (n17), domestic breeding enterprises of the Central Federal District (n15) and the NorthWest Federal District (n6). It was revealed that as the time for checking the bulls on the quality of the offspring increases, the effectiveness of their initial genomic estimate for milk production decreases to 74.4 on average for sires owned by foreign companies, to 52.2 and 59.3 for bulls belonging to domestic breeding enterprises. The best results when evaluating the quality of the offspring (183 kg of milk) were obtained from sires with a high genomic score (699 kg of milk) belonging to foreign companies. The correlation coefficients between the estimates by genome and by quality of the offspring ranged from 0.66 (P0.01) for bulls belonging to the breeding enterprise of the NorthWestern Federal District, to 0.49 (P0.01) for sires belonging to the breeding enterprise of the Central federal district. High statistically significant correlations have bulls estimated by their fat content r0.720.83 (P0.001) and milk protein r0.800.84 (P0.001). The distribution of bulls by the level of genomic breeding value showed that the genomic score is overestimated in comparison with the offspring quality scoring. Bulls with a genomic score for milk yield less than 500 kg of milk received a negative rating for the quality of offspring (253 kg) in conditions of the US farms and 325 kg in conditions of farms in the Leningrad Region. On average, bulls with a genomic breeding value of 501600 kg in the conditions of the Leningrad Region demonstrated a superiority in the breeding value indicator by 23.6, with a genomic breeding value of 9011100 kg by 40.9. Under the US farm conditions, the same genomically evaluated bulls maintained their breeding value by 46.7 and 91.2, respectively. Therefore, to reduce the risk when using genomically evaluated bulls, it is necessary to select sires with high scores by productivity traits.Целью настоящей статьи было сопоставление результатов оценки племенной ценности быков, оцененных по геному и по качеству потомства. Для анализа использованы данные генетической ценности быков, принадлежащих импортным компаниям (n17), отечественным племпредприятиям Центрального федерального округа (n15) и СевероЗападного федерального округа (n6). Выявлено, что по мере увеличения времени проверки быков по качеству потомства результативность их первоначальной геномной оценки по удою снижается до 74,4 в среднем по производителям, принадлежащим импортным компаниям, до 52,2 и 59,3 по быкам, принадлежащим отечественным племпредприятиям. Наилучшие результаты при оценке по качеству потомства (183 кг молока) получены от производителей, имеющих высокую геномную оценку (699 кг молока), принадлежащих импортным компаниям. Коэффициенты корреляции между оценками по геному и по качеству потомства варьировали от 0,66 (P0,01) по быкам, принадлежащим племпредприятию СевероЗападного федерального округа, до 0,49 (P0,01) по производителям, принадлежащим племпредприятию Центрального федерального округа. Высокие, статистически достоверные корреляции имеют быки, оцененные по содержанию жира r0,720,83 (P0,001) и белка r0,800,84 (P0,001) в молоке. Распределение быков по уровню геномной племенной ценности показало, что геномная оценка завышена по сравнению с оценкой по качеству потомства. Быки, имеющие геномную оценку по удою менее 500 кг молока, получили отрицательную оценку по качеству потомства (253 кг) в условиях ферм США и 325 кг в условиях хозяйств Ленинградской области.В среднем быки с геномной племенной ценностью 501600 кг в условиях Ленинградской области сохранили превосходство показателя племенной ценности на 23,6, с геномной племенной ценностью 9011100 кг на 40,9. В условиях ферм США эти же геномно оцененные быки сохранили показатель племенной ценности, соответственно, на 46,7 и 91,2. Следовательно, для снижения риска при использовании геномно оцененных быков, необходимо отбирать для воспроизводства производителей с высокой оценкой по признакам продуктивности.

scholarly journals Quality of technological limestone quality as an important aspect of the efficiency of sugar beet factories

2021 ◽  
Vol 845 (1) ◽  
pp. 012107
Author(s):  
M I Egorova ◽  
L N Puzanova ◽  
E S Nikolaeva
Keyword(s):  
Calcium Carbonate ◽  
Sugar Beet ◽  
Russian Federation ◽  
Federal District ◽  
Operating Efficiency ◽  
Sugar Production ◽  
Central Federal District ◽  
Beet Sugar ◽  
The Russian Federation

Abstract The authors studied 252 samples of limestone mined in 2014-2020 on the territory of 5 fields located in 2 regions of the Central Federal District of the Russian Federation. Limestone quality was assessed by the content of calcium carbonate and associated impurities. According to the results of the assessment, a number of deposits were formed in decreasing limestone quality. The highest quality was noted at the East-Bernikovskoe deposit (Tula region), containing on average 95.3% of calcium carbonate. Through the example of 10 beet sugar factories located in 5 regions of the Central Federal District, the influence of the quality of limestone on its consumption in sugar production was assessed. The authors studied the data on the consumption of limestone of the considered deposits at sugar beet factories, which was used in the period from 2014 to 2020. According to the results, a number of deposits were determined to increase the consumption of limestone in the production of sugar, which coincided with a number in terms of decreasing quality. A lower consumption of limestone was noted at beet sugar factories that used limestone from the East-Bernikovskoe (in average 3.81% during the studied period). Therefore, the choice of limestone of a certain deposit for the use in sugar production is a factor in enhancement of operating efficiency of beet sugar factories.

scholarly journals Dynamic Quality Monitoring System to Assess the Quality of Asphalt Concrete Pavement

Buildings ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 577
Author(s):  
Ziyuan Ma ◽  
Jingxiao Zhang ◽  
Simon P. Philbin ◽  
Hui Li ◽  
Jie Yang ◽  
...  
Keyword(s):  
Asphalt Concrete ◽  
Quality Evaluation ◽  
Asphalt Pavement ◽  
Quality Monitoring ◽  
Construction Quality ◽  
Digital Monitoring ◽  
Pavement Construction ◽  
Dynamic Quality ◽  
Asphalt Concrete Pavement

With the rapid development of new technologies, such as big data, the Internet of Things (IoT) and intelligent sensing, the traditional asphalt pavement construction quality evaluation method has been unable to meet the needs of road digital construction. At the same time, the development of such technologies enables a new management system for asphalt pavement construction. In this study, firstly, the dynamic quality monitoring system of asphalt concrete pavement is established by adopting the BeiDou Navigation Satellite System, intelligent sensing, the IoT and 5G technology. This allows key technical indicators to be collected and transmitted for the whole process of asphalt mixture, which includes the mixing plant, transport vehicle, paving and compaction. Secondly, combined with AHP and the entropy weight (EW) method, the index combination weight is calculated. The comprehensive index for the pavement digital construction quality index (PCQ) is proposed to reflect the impact of monitoring indicators on pavement quality. An expert decision-making model is formed by using the improved particle swarm optimization (PSO) algorithm coupled with radial basis function neural network (RBF). Finally, the digital monitoring index and pavement performance index are connected to establish a full-time and multi-dimensional digital construction quality evaluation model. This study is verified by a database created from the digital monitoring data of pavement construction collected from a highway construction project. The system proposed in this study can accurately reflect the quality of pavement digital construction and solve the lag problem existing in the feedback of construction site.

The application of statistical methods for the analysis of the status and trends of unemployment in the Central Federal district

2017 ◽  
Vol 30 (1) ◽  
pp. 105-114
Author(s):  
D. V. Dianov ◽  
V. V. Baranov
Keyword(s):  
Statistical Methods ◽  
Federal District ◽  
Scientific Article ◽  
Statistical Research ◽  
Central Federal District ◽  
The Status ◽  
Macroeconomic Indicators ◽  
Potential Risks ◽  
The Subject ◽  
Object Of Study

The scientific article is devoted to the study of the traditional object of study of many social Sciences: managerial, sociological, legal, demography, political science, etc. the Problem of unemployment is known to be one of the main problems of economy of modern Russia. Unemployment rates are one of the main macroeconomic indicators. On the basis of their assessment of the prospects for economic growth, and identifies potential risks and investment attractiveness of countries. In this article, unemployment is seen as an object of statistical research on the subject of the possible application of complex statistical methods to assess its status and patterns of change over time in the regions of the Central Federal district (further - CFD).

Analysis of the Heavy Traffic Impact on the Life of Asphalt Concrete Pavement

2014 ◽  
Vol 1030-1032 ◽  
pp. 1116-1119
Author(s):  
Pei Pei Tang ◽  
Ai Qin Shen ◽  
Meng Bo Gao
Keyword(s):  
Service Life ◽  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Heavy Traffic ◽  
Structure Design ◽  
Traffic Impact ◽  
Ultimate Failure ◽  
Asphalt Concrete Pavement ◽  
The Impact ◽  
Pavement Service Life

With China's rapid economic development, traffic and heavy-duty vehicles increased significantly. Asphalt pavement failure caused by heavy traffic is increasingly prominent.Pavement's service life was greatly reduced. On the basis of extensive research and theoretical calculation the article analyzes the impact of heavy traffic on the asphalt pavement service life from three aspects of rutting,ultimate failure and fatigue failure, provides a theoretical basis for heavy traffic asphalt pavement structure design.

scholarly journals ANALYSIS OF THE STRUCTURE AND DYNAMICS OF THE VALUE OF HUMAN CAPITAL IN THE REGIONS OF CENTRAL FEDERAL DISTRICT

2018 ◽  
Vol 22 (2) ◽  
pp. 85-93
Author(s):  
V. L. Anichin ◽  
Yu. Yu. Vashcheykina
Keyword(s):  
Human Capital ◽  
Federal District ◽  
Federal State ◽  
Structure And Dynamics ◽  
Central Federal District ◽  
Index Analysis ◽  
Interregional Differentiation ◽  
The Subject ◽  
The Cost ◽  
Capital Return

The article is made on the materials of the Federal state statistics service published on the website http://www.gks.ru Oh. The subject of the research is the differentiation of regions by the cost of human capital. The object of the study is the regions of the Central Federal district. The purpose of the study is to identify patterns in the dynamics and structure of the value of human capital in the regions of the Central Federal district. The hypothesis of research consists in the assumption that the increasing differentiation of regions is caused by differences in economic conditions of its application. The study was performed with the help of statistical methods, including index analysis and correlation analysis. It is established that among the three factors (rent from human capital; return on human capital; wage level) statistically significant impact on the process of interregional differentiation of human capital has the last factor. A system of indices for analyzing the dynamics and structure of the cost of human capital is proposed. There is a significant increase in the cost of human capital in Moscow and the Moscow region, including due to the migration increase in the number of workers.

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