bluuebunny/crossref_metadata_2025 huggingface dataset:
Illustrating the Outcomes of Community-Based Research: A Case Study on Working with Faith-Based Institutions
Authors: Cresswell James , Janzen Rich , Ochocka Joanna
Published: April 2021

Incoming immigrants to places like Canada tend to be religious and thereby have sympathies counter to prevailing secularizing trends that emerge in research praxis. This paper presents an illustrative case study of Community-Based Research (CBR) that starts from the community to be studied. We illustrate how CBR can be an effective tool for engaging community stakeholders in solving community problems when stakeholders are part of faith-based institutions. This is accomplished by drawing on Ochocka and Janzen (2014) and Janzen et al. (2016), who discuss the hallmarks of CBR that we used to structure a case study with The Salvation Army (TSA). This paper focuses on TSA as a religious institution and how CBR supports TSA’s adjustment to enhance its relationships with a community it finds itself serving: newcomers. We first outline the hallmarks of CBR and show how they are expressed in our case study. Second, we extend Ochocka and Janzen (2014) and Janzen et al. (2016) by focusing on the functions of CBR to illustrate further the outcomes that can emerge from this sort of approach and make recommendations for researching with faith-based institutions.
Developing of transport airship for delivery oversized cargo to vostochny cosmodrome
Authors:   Moscow State Technical University named by N.E. Bauman, Didkovskiy Arkadiy , Mukhina Ekaterina ,   Moscow State Technical University named by N.E. Bauman, Stanishevskiy Gleb ,   Moscow State Technical University named by N.E. Bauman
Published: April 2021

An overview of existing methods of delivering oversized cargo using water, rail, road, air and airship transport, an analysis of the world experience in creating lighter-than-air aircraft and identified the most urgent tasks for this type of vehicles in the field of rocket and space technology, in particular, transportation of oversized elements of super-heavy launch vehicles from manufacturers to the Vostochny cosmodrome, search and rescue of astronauts, evacuation of spent stages from fall fields to disposal points and transportation of oversized trusses. The goals and objectives of this work are defined: review of existing projects of transport airships and study of their designs, development of the layout of a transport airship for delivering stages of superheavy launch vehicles from manufacturers to the Vostochny cosmodrome, calculation of the characteristics of the main systems and detailing the design of the vehicle. As exceptional design solutions, we tested the power scheme of gas shells based on supercharged spiral pneumatic structures that allow you to thermostat the carrier gas and fold the shell for storage, as well as a tangential system for blowing the aerodynamic shell, which allows you to reduce the drag of the device. Based on the developed layout, a simplified mathematical model of the device was created, which allows determining the optimal design parameters. These parameters were used for detailed development of each of the systems, then iterative calculation was performed. As a result, the design of a transport airship for the delivery of oversized elements from manufacturers to the Vostochny cosmodrome was developed and its main technical parameters were determined: load capacity-100 tons, cruising speed-126 km / h, flight range-10 thousand km.
SYNTHESIS OF THE OPTIMAL OBSERVER IN THE ABSENCE OF APRIORI INFORMATION ABOUT THE NOISE CHARACTERISTICS OF THE AUTOMATIC CONTROL AND MONITORING SYSTEM OF A TURBOFAN ENGINES
Authors:   Perm National Research Polytechnic University, Inozemtsev Aleksandr ,   JSC “UEC-Aviadvigatel”, Lamanova Nadezhda ,   Perm National Research Polytechnic University, Sazhenkov Alexey ,   JSC “UEC-Aviadvigatel”, Gribkov Igor ,   JSC “UEC-Aviadvigatel”, Pleshivykh Artur ,   Perm National Research Polytechnic University,   JSC “UEC-Aviadvigatel”
Published: April 2021

The possibility of obtaining measuring in-formation about the parameters of the automatic control and monitoring system of a turbofan engine during its operation in flight conditions and almost no restrictions on computational costs enable using algo-rithmic methods to improve the engine fault tolerance. In the previous article, the optimal observer, the Kalman filter, was used as a reserve meter. Its functioning essentially depends on the probabilistic characteristics of the system noise, which is known approximately and changes in a complex man-ner over time. Inaccuracies in these characteristics can lead to filter divergence and loss of its stability. To solve this problem, it is proposed to use the Yazvinsky adaptive filter, which allows calculating the covariance matrix of the disturbance noise after the arrival of new measurements from the values of the updated process of the Kaman filter. In this case computational costs increase insignificantly. The use of the Yazvsky adaptive filter eliminates the need for preliminary correlation analysis of system noise and pro-tects the Kalman filter from loss of stability. The results of modeling the Yazvinsky filter, consistent with the mathematical model of the turbofan engine, based on the flight test data of the PS-90A type engine as part of the TU-214 aircraft, both in steady-state and transient modes of engine operation, are presented. The parameters are indicated as percentage of the maximum values. A comparative analysis of the actual errors in the estimation of the output vector of the turbofan engine ACS when Kal-man and Yazvinsky filters are operating is carried out. The results of the comparative analysis are presented in the form of tables and graphs. It is shown that the proposed algorithm ensures fulfillment of the requirements for the accuracy of estimating the output vector of the automatic control and monitoring system of a gas turbine engine and can be recommended for use in the ACS of the turbofan engine.
RESEARCH OF EFFECTIVENESS OF FUNCTIONING OF UAV EQUIPPED WITH SOLAR BATTERIES IN ASENDING AND DECENDING TRAJECTORIES
Authors:   National Aerospace Agency, Asadov Hikmat , Abdullayeva Sevindj ,   Azerbaijan University of Oil and Industry, Aslanova Ayten ,   Research Institute of Space Research Natural Resources at the National Aerospace Agency
Published: April 2021

It can be surely stated that questions on installation of solar panels in unmanned vehicles is perspective direction of low aviation development. Development of this direction of researches lead to development of UAV capable to flight in stratosphere during a year utilizing solar-electric installation having weight 75 kg and wingspan 25 m. Abovementioned facts proves actuality of carrying out of further researches to increase effectiveness of energy provision of UAV. The paper is devoted to research of effectiveness of functioning of UAV equipped with solar panels in ascending and descending trajectories. As a basis for carrying out of calculations of solar energetic installation and optimization of whole long flight cycle of UAV the known formula was used that is the normal solar radiation is in inverse dependence of logarithm of PM2.5. Two variants for choice of flight trajectory in fixed time interval are considered. As a first approximation it is assumed that there is a linear inverse dependence between h and PM2.5 but a direct linear dependence between current time and sinus of zenith angle. The control function or timely func-tion of trajectory is suggested the integral of which is normalized by constant value. Also the integral type target functional is formed which determines the total radiation at the entry of solar batteries of UAV and allows to determine suggested energy re-source of flight. At the basis of abovementioned limitation condition and target functional the task of non-conditional variation op-timization is composed. On the basis of solution of optimization task two flight trajectories according to considered regimes are analyzed. The optimum flight regimes with minimum energy resources and optimum speed are defined.
Formation of the Kaolin Structure Treated by Pressure
Authors:   Пермский государственный национальный исследовательский университет, Seredin Valerii V. , Andrianov Andrey V. ,   Пермский государственный национальный исследовательский университет, Gaynanov Sharibzan Kh. ,   Пермский государственный национальный исследовательский университет, Galkin Vladislav I. ,   Пермский государственный национальный исследовательский университет, Andreyko Sergey S. ,   Пермский национальный исследовательский политехнический университет
Published: April 2021

To form the technological properties of clays, various methods of their activation have been developed, the essence of which is that when processing clays, their structure (defectiveness) changes, which forms the energy potential of clay particles, and the latter is realized in the form of "specified" physicochemical properties of clays. In this regard, the effect of stress pressure on the change in the defectiveness of structural elements of kaolin was studied. Experimental studies showed that the pressure value P = 150 MPa was the boundary value at which different conditions for the formation of defectiveness of structural elements of kaolin were observed. High pressure has a multidirectional effect on the defectiveness formation of the kaolin structural elements: a package, a mineral, a colloid and an aggregate. In a package of kaolinite mineral, the defectiveness increases with increasing pressure. Defects are formed due to the removal of Al, Fe, Mg, Si ions from the octahedral and tetrahedral sheets. Al ions are the most sensitive to pressure. The removal of ions entails deformation of the packet and the formation of "hole" energy centers. Pressure up to 0–150 MPa has a greater effect on the formation of defectiveness (calculated correlation coefficient rс = 0.86) than in the range 150–800 MPa (rс = 0.82). In the kaolinite mineral at pressures up to 150 MPa, a decrease in defectiveness is observed due to the ordering of the structure under pressure (rс = 0.67). At pressures above 150 MPa, an increase in the defectiveness of the kaolinite mineral (rс = –0.72) is observed due to the destruction of hydrogen bonds between the packets, which entails the sliding and rotation of the structural packets among themselves. In a colloid (particle), with an increase in pressure to 150 MPa, the structural defect decreases due to an increase in the colloid density (rс = 0.67). In the pressure range of 150–800 MPa, it is rather difficult to reveal the effect of pressure on the formation of defectiveness (rс = 0.37). In the aggregate, with an increase in pressure to 150 MPa, the defectiveness of the structure increases due to crushing of particles, sliding and displacement of particles among themselves (rс = 0.95). In the pressure range of 150–800 MPa, it is rather difficult to reveal the influence of pressure on the formation of defectiveness (rс = 0.58), although the tendency increases with increasing pressure, the defectiveness of the aggregate remains.
Alteration of Physical and Chemical Properties of Clays Subjected to Pressure
Authors:   Perm State National Research University, Seredin Valerii V. , Siteva Olga S. ,   Perm State National Research University, Alvanyan Karine A. ,   Perm State National Research University, Andrianov Andrey V. ,   Perm State National Research University
Published: April 2021

Clays represent complex polymineral formations. The properties of clays, including sorption, are largely determined by the structure of their crystal lattice, mineral composition and particle size distribution, as well as by environmental conditions. The mineral composition of clays is represented by the energy on the surface of particles; and the particle size distribution is represented by the active surface area of particles. These two complex parameters mainly determine the sorption activity of clays. To change the sorption activity of clays, the latter are subjected to mechanical treatments, thermal modifications, and chemical activations with the use of chemical agents such as acids, alkalis, salts at various exposure times. Therefore, a study of patterns of changes in the structure and sorption properties of clays subjected to pressure was conducted. Experimental studies have shown that if kaolin is subjected to pressure, defects are formed in the structural pack of kaolinite mineral due to the removal of Al3+, Fe3+/2+, Mg2+, Si4+ ions from it. In this case, pressure has the maximum influence on the removal of Al3+ ions from the pack. As a result of the removal of ions, the formation of the defects deforms the crystal lattice of kaolinite. Data obtained through IR spectroscopy confirm the increase of defectiveness (irregularity) of the structure of kaolinite. It has been revealed that when kaolin is subjected to a pressure of 0–150 MPa, the sorption activity mostly depends on рН of the diffuse layer particle solution ZрН = 73 % and crystallite defectiveness degree ZМк = 24 %. The specific surface area of particles ZSsa = 1 % and kaolinite pack defectiveness Zс = 2 % do not have any significant influence on sorption. If kaolin is subjected to a pressure of 150–800 MPa, kaolin sorption activity mostly depends on kaolinite pack defectiveness Zс = 74 % and crystallite pack defectiveness ZМк = 19 %. The specific surface area of particles ZSsa = 3 % and рН of the diffuse layer particle solution ZрН =4 % do not have any significant influence on sorption.
Prediction of Oil and Gas Occurrence in the Southern Part of Perm Krai Based on Regional 3D Modeling
Authors:   PermNIPIneft branch of LUKOIL-Engineering LLC in Perm, Yuzhakov Aleksey L. , Putilov Ivan S. ,   PermNIPIneft branch of LUKOIL-Engineering LLC in Perm
Published: April 2021

The territory of the southern part of Perm Krai is well studied in terms of oil and gas prospecting. About 150 oil and gas fields have been discovered there, over 7000 deep wells have been drilled, and 3D seismic surveys have been completed on the area exceeding 5000 km2. The state of exploration of the territory allows us to have an immense array of geologic information, which can be used to search and predict oil and gas occurrence in structures that remain left out or that have not been studied yet. The research area was limited by the confines of Perm Krai in the south, west, and east and by a conventional line in the north along the boundary of the completed seismic surveys. To study the territory based on the reflecting horizon surface of Perm Krai, a 3D geological model has been built within IRAPRMS software system. The model calculates a regional, a zonal and local constituents of the reflecting horizon of Perm Krai. The local constituent allowed us to single out structures divided into three categories: structures of ascertained oil and gas occurrence, structures that do not contain oil and gas (empty), and structures for which a prediction is needed. In the model, structural parameters representing a trap potential for the accumulation and retention of hydrocarbons were calculated. Moreover, geochemical parameters showing a generation potential and a migration constituent, as well as hydrogeological parameters as indirect data to determine the saturation of structures with hydrocarbons, were downloaded into the model. The obtained data about the importance of each parameter for all structures allowed us to generate a single database and predict oil and gas occurrence by the machine learning method, i.e. through the step-bystep linear discriminant analysis. Based on the results of the linear discriminant analysis, 138 predicted structures were arranged in groups in accordance with degrees of their potential. By applying the built individual probability models, a map of the regional probability of structures’ saturation with hydrocarbons was obtained; this map served as a basis and amendment of oil and gas geological zoning boundaries of the southern part of Perm Krai.
The Influence of Lithologic and Facies Zones on the Efficiency of Cyclic Steam Simulation (as Illustrated by the Permian–Carboniferous Reservoir of Super Viscous Oil of the Usinskoye Oil Field in the Komi Republic)
Authors:   PermNIPIneft branch of LUKOIL-Engineering LLC in Perm, Ageeva Anastasia Yu. , Putilov Ivan S. ,   PermNIPIneft branch of LUKOIL-Engineering LLC in Perm
Published: April 2021

The influence of lithologic facies zones on the development of the Permian-Carboniferous reservoir of the Usinskoye oil field was evaluated. To meet the objective, reservoir porosity and permeability of each lithologic facies zone were addressed, the facial zoning influence on the rate of oil extraction in the Permian-Carboniferous reservoir of the Usinskoye oil field was analyzed, and the performance was evaluated after cyclic steam injection. The research deals with the Permian-Carboniferous reservoir of the Usinskoye oil field in the Komi Republic. In accordance with a developed format, a database of core analysis results and a base on cyclic steam simulation efficiency for the period of 5 years were collected. To determine the belonging of facies, we used the classification system for carbonate rocks suggested by Robert J. Dunham with the additions proposed by A.F. Embry and J.E. Klovan (based on the prevalence of structure components in limestone, the grouting agent type, as well as their interrelation in the rock). Based on the material composition of the rock and on the structural parameter, the following three main facies zones were identified: shallow-water carbonates (internal ramp zone), organogenic buildup (middle ramp zone), shallow-water offshore plain (middle ramp zone, external ramp zone in part). In addition, among the facies, it is possible to single out a moderately deep-water offshore plain (external ramp zone). In accordance with the research results, curves of the displacement coefficient distribution related to porosity were obtained and guidelines on determining the priority drilling sites within the area were given. As per the core analysis results, in the eastern part of the field, a zone of organogenic buildups was clearly determined; such buildups were formed mainly in the middle and late Carboniferous Period and Early Permian period. In the north-western part of the field, the existence of an internal ramp with shallow-water carbonate facies was assumed. The location of the priority drilling wells was chosen with regard to the fact that each cluster of development drilling wells is to penetrate facies of organogenic buildups having the best reservoir properties and oil displacement efficiency.
Estimating the Potential of Unmanned Aerial Vehicle Use in the Oil and Gas Industry
Authors:   Perm National Research Polytechnic University, Anikaeva Anastasia D. , Martyushev Dmitry A. ,   Perm National Research Polytechnic University
Published: April 2021

The relevance of the study is explained by the need to use unmanned aerial vehicles (UAV) to serve engineering and geodetic tasks in the oil and gas industry. Airborne photographic survey using unmanned aerial vehicles is currently an advanced technology in the area of geodesy and it replaces such methods as tacheometry, satellite-based positioning in RTK modes, manned aerial photography, and aiborne laser scanning (ALS). The potential for using UAVs in the oil and gas industry today is truly enormous. Numerous safety and reliability problems, which traditionally have been cost consuming for oil and gas companies, can be effectively addressed using UAVs. The study included processing of data obtained from the unmanned complex in three modern software packages (Agisoft Photoscan Professional, v 1.2.5.2594 (Russia), ERDAS IMAGINE, v 2015 (USA) and Pix4Dmapper Pro (Switzerland)) of various automation degrees; assessment of accuracy in ArcMap software by superimposing a topographic plan on an orthomosaic with a scale of 1: 500 on the territory under consideration; calculation of economic and labor costs. As part of the study, it was proved that the use of UAVs was possible not only for the geodetic work, but also for solving other equally important tasks of the oil and gas industry, which leads to a decrease in economic and environmental risks, automation of processes related to monitoring of oil facilities, prevention of illegal attempts of pipeline tie-ins, oil spills. In addition, based on the obtained orthophotomaps, the economic, accuracy and labor-time feasibility of using unmanned systems were confirmed. It has been established that the use of unmanned aerial vehicles in various fields of oil and gas activities for solving engineering and geodetic problems is an integral part of any company engaged in the production and transportation of hydrocarbons.
Application of Integrated Modeling in the Oil and Gas Industry
Authors:   LLC LUKOIL-PERM, Filippov Evgeny V. , Chumakov Gennady N. ,   LLC IC SIBINTEK, Ponomareva Inna N. ,   Perm National Research Polytechnic University, Martyushev Dmitry A. ,   Perm National Research Polytechnic University
Published: April 2021

The present stage of the oil industry development is characterized by a growing share of hard to reach reserves, the amount of complicated well stock, oil production costs and increasing requirements to production accounting accuracy, implementation of energy-efficient and resource-efficient technologies for development and production, in conditions of the multifactorial evaluation of asset development prospects a problem of the asset intellectualization is a priority. Within this problem, automation and implementation of integrated approaches to production optimization, prevention and control of difficulties, effective asset development management both on operative and long-term levels are considered. At present, a complex and effective tool in resolving the problem is an integrated model, i.e. a model of a well production process (oil, gas, water), including all production chain elements in the form of consequential component models. An integrated simulation is effectively used in operational activities of LUKOIL-PERM LLC and is an optimal tool to solve multidisciplinary tasks in field development and technology of oil and gas production, transportation and processing (using software by Petroleum Experts company). Experience of implementing the integrated simulations suggests a synergetic effect related to a need in developing associated aspects manifesting themselves by improvement of skills of the specialists, improvement of input data quality and increase of input data volume, improvement of separate component quality during their integration. A set of actions developed and substantiated using the integrated simulations and their separate components resulted in obtaining some additional oil production over 21.9 thou. t.
Formation of the Kaolin Structure Treated by Pressure
Authors:   Perm State National Research University, Seredin Valerii V. , Andrianov Andrey V. ,   Perm State National Research University, Gaynanov Sharibzan Kh. ,   Perm State National Research University, Galkin Vladislav I. ,   Perm National Research Polytechnic University, Andreyko Sergey S. ,   Perm National Research Polytechnic University
Published: April 2021

To form the technological properties of clays, various methods of their activation have been developed, the essence of which is that when processing clays, their structure (defectiveness) changes, which forms the energy potential of clay particles, and the latter is realized in the form of "specified" physicochemical properties of clays. In this regard, the effect of stress pressure on the change in the defectiveness of structural elements of kaolin was studied. Experimental studies showed that the pressure value P = 150 MPa was the boundary value at which different conditions for the formation of defectiveness of structural elements of kaolin were observed. High pressure has a multidirectional effect on the defectiveness formation of the kaolin structural elements: a package, a mineral, a colloid and an aggregate. In a package of kaolinite mineral, the defectiveness increases with increasing pressure. Defects are formed due to the removal of Al, Fe, Mg, Si ions from the octahedral and tetrahedral sheets. Al ions are the most sensitive to pressure. The removal of ions entails deformation of the packet and the formation of "hole" energy centers. Pressure up to 0–150 MPa has a greater effect on the formation of defectiveness (calculated correlation coefficient rс = 0.86) than in the range 150–800 MPa (rс = 0.82). In the kaolinite mineral at pressures up to 150 MPa, a decrease in defectiveness is observed due to the ordering of the structure under pressure (rс = 0.67). At pressures above 150 MPa, an increase in the defectiveness of the kaolinite mineral (rс = –0.72) is observed due to the destruction of hydrogen bonds between the packets, which entails the sliding and rotation of the structural packets among themselves. In a colloid (particle), with an increase in pressure to 150 MPa, the structural defect decreases due to an increase in the colloid density (rс = 0.67). In the pressure range of 150–800 MPa, it is rather difficult to reveal the effect of pressure on the formation of defectiveness (rс = 0.37). In the aggregate, with an increase in pressure to 150 MPa, the defectiveness of the structure increases due to crushing of particles, sliding and displacement of particles among themselves (rс = 0.95). In the pressure range of 150–800 MPa, it is rather difficult to reveal the influence of pressure on the formation of defectiveness (rс = 0.58), although the tendency increases with increasing pressure, the defectiveness of the aggregate remains.
Appearance of Capillary end Effects in Filtration Studies
Authors:   PermNIPIneft branch of LUKOIL-Engineering LLC in Perm, Putilov Ivan S. , Chizhov Denis B. ,   PermNIPIneft branch of LUKOIL-Engineering LLC in Perm, Kochergin Evgeniy A. ,   PermNIPIneft branch of LUKOIL-Engineering LLC in Perm
Published: April 2021

From theoretical studies and experiments on the core, the so-called capillary end effect, or, as it is also called, the effect of phases capillary entrapment, is known. When carrying out laboratory experiments to determine the relative phase permeabilities, capillary end effects appear on the core models of the reservoir. These effects can occur as a result of capillary ruptures at the ends of the core sample, which leads to the accumulation of one phase in relation to the other, and thereby affects the movement and retention of the fluid. The region of capillary end effect, which occurs due to the rupture of capillaries at the exit from the sample, affects the change in pressure drop and saturation of a particular fluid. If the influence of capillary end effects is significant, then the experimental conditions are modeled incorrectly, which can lead to serious errors in predicting the productivity of the studied formation. This paper presents the results of studying the porosity-permeability properties of determining the relative phase permeabilities and the studies analysis of the capillary end effects influence mechanism on the filtration capacity of rock samples during laboratory studies using the example of terrigenous and carbonate types of the Pavlovskoye reservoir. According to the results of the studies, the significance of capillary end effects in filtration experiments was established using the example of determining the relative phase permeabilities. Recommendations are given with the aim of minimizing the negative influence of end effects. Capillary effects can be overcome by increasing the length of the test sample, as well as by increasing the flow rate of the fluid during a laboratory experiment to determine the relative phase permeabilities.
Estimation of the Influence of Associated Petroleum Gas with a High Carbon Dioxide Content on the Oil Displacement Regime in the Development of the Tolumskoye Field
Authors:   PermNIPIneft branch of LUKOIL-Engineering LLC in Perm, Morozyuk Oleg A. , Kalinin Stanislav A. ,   PermNIPIneft branch of LUKOIL-Engineering LLC in Perm, Kalinin Sergey A. ,   PermNIPIneft branch of LUKOIL-Engineering LLC in Perm, Scvortsov Andrey S. ,   PermNIPIneft branch of LUKOIL-Engineering LLC in Perm, Melekhin Sergey V. ,   PermNIPIneft branch of LUKOIL-Engineering LLC in Perm, Stenkin Andrey V. ,   LUKOIL-Western Siberia LLC, TPE Urayneftegaz, Mardamshin Ruslan R. ,   LUKOIL-Western Siberia LLC, TPE Urayneftegaz, Usachev Gennady A. ,   Head office of LUKOIL-Engineering LLC, Mett Dmitry A. ,   Head office of LUKOIL-Engineering LLC
Published: April 2021

Depending on reservoir conditions, composition of reservoir oil and gas agent, various modes of oil displacement by gas can be implemented in reservoir conditions. The most preferable mode from the standpoint of the completeness of oil recovery is the mode of miscible displacement of oil by gas. The main parameter indicating the achievement of the miscible displacement mode is the minimum miscibility pressure. The most popular and reliable laboratory method for determining the minimum mixing pressure is the slim-tube method. The results of laboratory studies performed to determine the value of the minimum miscibility pressure of reservoir oil from the Tolumskoye field and associated petroleum gas of the Semividovskaya group of fields and also to determine the mode of oil displacement by associated petroleum gas are presented. To determine the parameters of reservoir oil and change its properties at various molar concentrations, the standard PVT research technique was used. To determine the minimum miscibility pressure, the slim-tube technique was used. To assess the mechanism of miscibility process development, chromatographic analysis of the sampled gas composition and visual analysis of the phase fluids behavior by means of a visual cell were additionally performed. Two series of filtration experiments were performed to displace the recombined oil model of the Tolumskoye field by the model of associated petroleum gas from the Semividovskaya group of fields on slim models. According to the obtained dependence of the oil displacement coefficient on pressure, when oil from the Tolumskoye field was displaced by associated petroleum gas of the Semividovskaya group of fields, the minimum miscibility pressure would be 14.8 MPa. Based on the criteria for determining the mixing mode, as a result of generalization and comprehensive analysis of the research results, it was found that for the conditions of the Tolumskoye field, the mode of oil displacement by associated petroleum gas of the Semividovskaya group of fields was the mode of the developed multi-contact miscible displacement (the mechanism of condensation of solvent components into the oil phase).
Study of Fluid Flow to a Horizontal Well
Authors:   Gazprom VNIIGAZ LLC, Shevchenko Oksana N.
Published: April 2021

Recently, it is necessary to note the presence of negative dynamics in the deterioration of the reserves structure for newly discovered fields, and most of the them are classified as hard-to-recover, confined to deposits with a complex geological structure, low permeability, high oil viscosity, complicated by the presence of faults, active bottom waters and gas caps. Hard-to-recover reserves are drilled with horizontal wells. This is primarily because horizontal wells make it possible to multiply the area of fluid filtration due to the increase in the drainage area, due to the extensive contact of the horizontal well section with the rock, allowing to increase the well flow rate many times over. Summarizing the above, horizontal wells are used to develop fields with the following parameters: fields with a thin oilsaturated rim (up to 15 m), with a gas cap and bottom water; fields of heavy oil, with a viscosity of more than 30 mPa·s; fields with low reservoir permeability (less than 0.002 μm2). Under these conditions, linear Darcy’s law cannot describe fluid filtration. Under the conditions of high-viscosity oil and lowpermeability reservoir existence, a certain initial pressure gradient is determined, due to the rheological properties of the filtering fluid and high values of the surface friction coefficient. Under conditions of a thin oil rim and an increased gas factor, the limiting filtration rates due to the dissolved gas regime are observed, and a nonlinear law describes the fluid inflow. One of the main parameters in the preparation of the technical and economic assessment of the reservoir is the flow rate of each individual horizontal well. Analytical methods for calculating the horizontal well flow rate show a high error. It is proposed to take a fresh look at the problem of determining the predicted flow rate of a horizontal well, using well-known approaches for solving this issue. It is rather difficult to reliably predict the parameters of reservoir operation: the horizontal wells productivity obtained with the help of modern hydrodynamic stimulators turns out to be unreliable, which leads to the formation of an insufficiently rational development system. And the arising complications during operation in field conditions have to be eliminated due to significant volumes of material and labor resources. Thus, the development of methods that contribute to obtaining a reliable calculation of production is an urgent task for the oil industry.
Determination of the Minimum Measures in the Well to Prevent the Formation of Asphalt-Resin-Paraffin Deposits
Authors:   PermNIPIneft branch of LUKOIL-Engineering LLC in Perm, Mitroshin Alexander V.
Published: April 2021

An analysis of the formation of asphaltene resin paraffin deposits is presented, criteria for assigning wells to subgroups of the complications type are considered, and a classification of complications in oil production is proposed. Oil is a complex and varied mixture of various hydrocarbons, both light and heavy, in thermodynamic equilibrium under reservoir conditions. In some fields, oil production is not accompanied by the formation of asphaltene resin paraffin deposits on the downhole pumping equipment, while in others it is complicated by them. Methods of preventing the deposition of asphaltene resin paraffin deposits and methods of dealing with them are considered, the research work done to substantiate the use of chemical reagents to prevent the formation of complications in oilproducing wells is presented, the minimum measures for subgroups of the proposed classification, complicated by asphaltene resin paraffin deposits of the fund, are presented. The methods for determining the effectiveness of the asphaltene resin paraffin deposits inhibitors, developed in the PermNIPIneft branch of LLC LUKOIL-Engineering, were briefly presented, on the basis of which the studies were carried out. The results of studies on the selection of reagents and determination of their effectiveness for the production well stock complicated by asphaltene resin paraffin deposits were considered. It was found that during wells operation where the physicochemical properties changed, the effectiveness of the inhibitor significantly decreased and did not reach the efficiency criterion of 75%. So, in oil production it is necessary to periodically, at least once every three years, check the effectiveness of the selected reagents, as well as analyze changes in such parameters of the processed object as: change in the physicochemical properties of the fluid; geological and technical measures at the well; significant increase, decrease in production; involvement or isolation of interlayers, production facilities; changes in reservoir, bottomhole pressure during operation. Approaches for wells are proposed: where, as a result of research, the criterion of the effectiveness of chemical reagents has not been achieved, it is necessary to select other methods to avoid the complication.
ICNP® terminology subset for people with tuberculosis
Authors: Silva Ludimila Paiva Zamprogno , Primo Cândida Caniçali , Prado Thiago Nascimento do
Published: April 2021

ABSTRACT Objectives: to develop an ICNP® terminology subset to care for people with tuberculosis. Methods: a methodological research that followed the following steps: identification and validation of empirical indicators of altered needs relevant to people with tuberculosis based on literature; cross-mapping of the empirical indicators of altered needs identified with ICNP® 2017 terms; construction of nursing diagnoses/outcomes and interventions; assessment of relevance of nursing diagnoses /outcomes and interventions and ICNP® terminology subset structuring. Results: an ICNP® terminology subset was developed to care for people with tuberculosis with 51 diagnoses/outcomes and 264 nursing interventions, assessed by nurses from Primary Health Care and structured according to Wanda Horta’s Theory of Basic Human Needs. Final Considerations: the subset is a technological instrument through which it is possible to identify the elements of nursing practice from the affected human needs.
Uso de club drugs entre estudantes de graduação: prevalência, características associadas e a influência dos pares
Authors: Demenech Lauro Miranda , Dumith Samuel C. , Gramajo Carolina Siomionki , Ferreira Maile Zanotta , Silveira Roberta Rodrigues , Neiva-Silva Lucas
Published: April 2021

RESUMO Objetivo Medir a prevalência do uso na vida, no último ano e no último mês de duas club drugs – o ecstasy e o LSD –, bem como as características associadas ao uso dessas substâncias, no último mês, entre estudantes de graduação de uma universidade no Sul do Brasil. Métodos Trata-se de um estudo transversal conduzido no ano de 2015 com amostragem aleatória sistemática por conglomerados. Participaram 1.423 estudantes de graduação. Foi utilizado um modelo de análise multivariável em três níveis hierárquicos por meio da regressão de Poisson com ajuste robusto da variância. Resultados As prevalências de uso na vida, no último ano e no último mês de club drugs foram de 12,7%, 7,8% e 3,8%, respectivamente. Indivíduos do sexo masculino, com orientação sexual homossexual ou bissexual, mais jovens, que moravam com seus pares, solteiros, e que relataram uso no último mês de tabaco e maconha apresentaram maior probabilidade de ter feito uso no último mês de alguma club drug. Entretanto, a variável mais fortemente associada a esse desfecho foi ter algum amigo que já fez uso de alguma droga ilícita na vida (RP = 19,54). Conclusões O ambiente universitário parece ser um terreno fértil para a difusão do uso de club drugs. O fortalecimento de uma rede de apoio institucional da universidade, capaz de propor atividades de prevenção, bem como de identificar, acolher e encaminhar casos em que haja abuso e dependência dessas substâncias, pode ser uma estratégia importante para lidar com essa problemática.
Associations between cyberbullying victimization and depressive symptoms in early adolescence
Authors: Wendt Guilherme Welter
Published: April 2021

ABSTRACT Objective To explore distinctive links between specific depressive symptoms (e.g., anhedonia, ineffectiveness, interpersonal problems, negative mood, and negative self-esteem) and cyberbullying victimization (CBV). Methods This cross-sectional study collected data from 268 adolescents between the ages of 13 to 15 years-old (50.7% female) who responded to the Children’s Depression Inventory (CDI) and to the Revised Cyberbullying Inventory (RCBI). Results CBV was positively associated with all CDI’s domains (anhedonia, ineffectiveness, interpersonal problems, negative mood, and negative self-esteem). Demographics – such as age and gender – were not significant in explaining CBV. However, ineffectiveness (B = .46, p = .04) and negative mood (B = .37, p < .05) significantly predicted CBV. Conclusion This study reports the first Brazilian examination of the links existing between CBV and specific types of depressive symptoms. Data reinforce the negative impact of cyberbullying experiences on youth’s mental health, highlighting stronger associations between negative mood and CBV, which could inform more tailored interventions.
Avaliação de diretrizes clínicas brasileiras em oncologia: carências no rigor do desenvolvimento, aplicabilidade e independência editorial
Authors: Piazza Thais , Izidoro Jans Bastos , Portella Marcos André Marques Portella , Panisset Ulysses , Afonso Guerra-Júnior Augusto , Cherchiglia Mariangela Leal
Published: April 2021

A ampliação da variedade de diretrizes clínicas em oncologia é perceptível em todo o mundo, o que salienta a necessidade de garantir a qualidade destes documentos. Assim, o objetivo do estudo foi avaliar a qualidade de diretrizes nacionais de tratamentos dos cânceres de mama, próstata e de cólon e reto. Foram selecionadas 12 diretrizes brasileiras publicadas por quatro grupos elaboradores distintos (Ministério da Saúde, sistema suplementar de saúde e de sociedades e associações médicas), e aplicado o instrumento AGREE II. Em todas as diretrizes avaliadas foram identificadas fragilidades importantes em mais de um Domínio, com destaque para os baixos valores para “aplicabilidade” e “independência editorial”. Os padrões observados por Domínios apresentam-se mais relacionados com o grupo elaborador do que com as condições clínicas tratadas. Menores escores no “rigor do desenvolvimento” e “independência editorial” foram obtidos por grupos elaboradores não governamentais, inclusive com ausência ou falta de transparência nas informações. Mesmo que a “clareza da apresentação” das diretrizes do Ministério da Saúde tenha sido relativamente inferior, na “aplicabilidade” todas apresentaram limitações expressivas. Consequentemente, na avaliação global nenhuma das diretrizes foi recomendada sem modificações, sendo quatro delas não recomendadas. Por fim, é necessário qualificar as recomendações no que tange as evidências que as fundamentam (“rigor metodológico”), assim como dispor de forma compreensível e exequível as condutas a serem adotadas (“aplicabilidade”) e mitigar interesses conflitantes, para que seja ofertado o melhor cuidado aos pacientes oncológicos no país.
Vulnerabilidades das indústrias nacionais de medicamentos e produtos biotecnológicos no contexto da pandemia de COVID-19
Authors: Fernandes Daniela Rangel Affonso , Gadelha Carlos Augusto Grabois , Maldonado Jose Manuel Santos de Varge
Published: April 2021

Resumo: Em tempos de pandemia, a vulnerabilidade econômica, tecnológica e dos sistemas de saúde fica ainda mais exposta. No Brasil, os maiores desafios são o controle do déficit da balança comercial e a dificuldade de acesso a medicamentos e produtos da saúde ou até mesmo de seu desenvolvimento. A forte dependência externa de insumos e produtos para a saúde é um dos fatores negativos do país no enfrentamento da emergência sanitária mundial ocasionada pelo novo coronavírus SARS-CoV-2. Nesse contexto, o artigo procurou discutir as vulnerabilidades do subsistema de base química e biotecnológica nacional diante da atual pandemia, tendo como foco a indústria de medicamentos e de produtos biotecnológicos e a articulação entre os campos da saúde e da economia política. Realizou-se pesquisa qualitativa, utilizando, como procedimentos metodológicos, revisão bibliográfica e análise de dados secundários. Os resultados encontrados, relacionados a baixo investimento em saúde pública, baixa capacidade de inovação, perfil da indústria farmacêutica, dependência externa, política cambial, patentes, entre outros, demonstram a grande fragilidade inovativa e tecnológica da indústria de medicamentos e produtos biotecnológicos e a essencialidade de articulação entre diversos campos, em especial, da saúde e da economia, para incorporação de uma visão sistêmica, que crie condições para redução das vulnerabilidades, no que tange ao enfrentamento da pandemia, e equacione um projeto de desenvolvimento para o país.
EL ESPACIO ARQUITECTÓNICO Y LA REGULACIÓN DE LOS CUERPOS DE LOS NIÑOS: LOS SALONES DE CLASE A FINALES DEL SIGLO XIX Y PRINCIPIOS DEL SIGLO XX
Authors: MARTINÉZ ROSALÍA MENÍNDEZ
Published: April 2021

Resúmen: La década de los noventa del siglo XIX representó un momento importante para la educación en México, impulsado por un grupo de maestros, higienistas, médicos, arquitectos y educadores que se plantearon y promovieron cambios para la educación primaria. Uno de estos cambios se dio en al ámbito del espacio escolar, es decir en la construcción de edificios escolares. El objetivo de este artículo se enmarca en un contexto de modernización promovida por el gobierno de Porfirio Díaz (1876-1911), y busca estudiar la transformación que el espacio escolar experimentó, centrando el análisis en las aulas, lugar donde el niño pasaba un importante tiempo de su vida y en donde se daba el ordenamiento de los comportamientos de los niños. El edificio escolar se concibió como un espacio de protección y formación para el cuerpo del niño, el cual fue acompañado por el mobiliario, los materiales escolares y los libros de texto. La escritura de este trabajo cuenta con el soporte de fuentes de los Archivo Históricode la Ciudad de México, Instrucción Pública, Planos de escuelas; Hemeroteca de la Universidad Pedagógica Nacional, México; Hemeroteca Digital (UNAM).
Evaluation of actions of the official veterinary service to mitigate outbreaks of infectious laryngotracheitis and improve biosecurity on laying hen farms
Authors: Hergot Izabella G. , Rocha Christiane M.B.M. da , Xavier Fabiana G. , Santos Willian H.M. , Oliveira Leticia B. de , Martins Nelson R.S. , Ecco and Roselene
Published: April 2021

ABSTRACT: Infectious laryngotracheitis (ILT), caused by an Alphaherpesvirus (Gallid herpesvirus-1; GaHV-1), has been noticed in the region of the Terras Altas da Mantiqueira, Minas Gerais. From 2010 to 2018, the “Serviço Veterinário Oficial” (SVO) of the “Instituto Mineiro Agropecuário” (IMA), implemented measures to prevent spread of the virus to other regions and control the disease in the area. Due to the close proximity and consequent epidemiological link among farms, the region was considered a unique epidemiological unit. To check the efficiency of the ILT control measures, we carried out: (1) a seroepidemiological survey, (2) questionnaires for evaluating biosecurity measures; and (3) an evaluation of the influence of farm population density on the occurrence of ILT. In 2016, 2017, and 2018, ILT was investigated using epidemiological and clinicopathological methods, along with GaHV-1 molecular detection. Serological survey was carried out on 24 farms in the quarantined region and on 13 farms from other regions of the state. In 2010 and 2018, questionnaires were applied to collect data and determine indicators of biosecurity practices in all farms of the quarantined area. The differences were then assessed (Wilcoxon’s p<0.05). The results indicated positive serology throughout the region, although only on four farms (16.6%) the chickens have clinical signs, macroscopic and histological lesions of ILT. The prevalence of viral infection increased from 2016 (27%) to 2017 (50%) and was higher in farms with a high stock density (p=0.033). No disease, virus or antibodies were detected in the farms outside of the quarantined area. Although the biosecurity indicators had improved on all farms in the quarantined area (p<0.05), the virus was active and circulating in the region. The contingency measures have contained the outbreak, but biosecurity practices are paramount in the control of new outbreaks. Official control will be maintained in the region, including surveillance of new cases and biosecurity procedures to mitigate the risk of the virus reaching other regions.