bluuebunny/crossref_metadata_2025 huggingface dataset:
Liberal and Etatist Economic Model of Spatial Development of the Economy in Retrospect
Authors: Kuznetsov Aleksey V.
Published: July 2022

Introduction. The relevance of this study is determined by the tasks of our country’s transition to a new level of economic development in the context of the unfriendly policy of the “collective West”. In this regard, the Government of the Russian Federation, together with the Academy of Sciences, with the participation of the Agency for Strategic Initiatives, is working in the field of regional spatial policy of socio-economic development. The economic model based on the primacy of free market relations, which is led by large transnational corporations, is increasingly yielding to statist models of economic activity regulation. The purpose of the article in this context is to specify the conditions under which the tasks of Russia’s spatial development coincide with the vector of meeting the needs of society, its readiness for change. In the case of collinear dynamics, this will contribute to tectonic shifts and, consequently, to strengthening the competitiveness of the state at the macro level. With pejorative tendencies – to a systemic failure, when the government cannot govern in a new way, and society will not put up with a situation where the “top” will hold dominance on the basis of a regressive or stagnation policy.

Materials and Methods. It is very interesting, from this point of view is the historical and retrospective method of verification, which can reveal the interest of Russian society in specific or abstract values that play the role of an incentive that can expand the horizons of economic activity.

Discussion and Conclusions. On the basis of historical experience, which verifies the views of the classics of economic thought, regularities are revealed in the synthesis of the ideas of state economic policy, the expectations of society and the desire of individuals to consume the good.

The results of the study can be used in the development of conceptual and policy documents as part of the implementation of the National Technical Initiative and the Strategy for Spatial Development of Russia, as well as in order to make optimal management decisions on the formation and implementation of large-scale government projects. The results obtained explain from a historical point of view the priorities of society in the search for the optimal way to achieve well-being. The executive power needs such knowledge for the most efficient use of territorially localized resources when locating production facilities of advanced technological modes that ensure the strategic competitiveness of the Russian Federation.
La pandemia de la COVID-19 en Ecuador: reconstrucciones desde la complejidad-bioética
Authors: Mieles Moreira José Luis
Published: July 2022

El presente artículo tiene como objetivo sustentar desde la complejidad – bioética aportes a la crisis de la pandemia de la COVID-19 en Ecuador; indagación realizada en estudios de postgrado en Multividersidad Mundo Real Edgar Morín. Se basó en la complejidad como transmetodología, con la deconstrucción rizomática como transmétodo, trastocando el esquema dominante propio de las investigaciones tradicionales; más allá de lo cualitativo-cuantitativo-sociocrítico, reconociendo las ambivalencias que emergen de la ciencia moderna colonial. Y la necesidad de estudio a la crisis en pandemia complejizando los análisis cuantitativos. Desde la bioética global como ciencia transdisciplinar, se vindica que la condición humana ha sido vulnerada en esta emergencia sanitaria retroactuando en el sistema social, político, económico, educativo y tecnológico estatal y planetario. Se reconstruye el análisis de la crisis de la pandemia considerando esencias complejas que abordan la bioética como la salvaguarda de la vida en todo sentido.
Myanmar EFL pre-service teachers' motivational disposition in English writing: A pilot study
Authors: Maung Ei Phyoe , Kálmán Csaba , Gordon Győri János
Published: July 2022

Since acquiring writing skills in the English language is a multiplex task as it includes several complex cognitive activities (Tillema, 2012), it is a challenging skill to master for English as a foreign language (EFL) students. The acquisition of this skill is also affected by motivation, which has a great impact on the success or failure of learning the target language (Dörnyei & Ushioda, 2011), and significantly influences the learner's academic and professional performance (Csizér & Dörnyei, 2005). Lack of research focusing on investigating the motivating effect of different aspects of English writing in the Myanmar context provided inspiration to conduct the present pilot study, which focused on mapping the motivational profile of 54 EFL pre-service teachers in English writing in Myanmar. The questionnaire developed by the authors was piloted in September 2020. Results indicate that out of the 12 dimensions measured, pre-service teachers' ideal selves and instrumental motivation seem to be the most motivating aspects of English writing, and there is a strong correlation between these two scales suggesting that the participants' ideal L2 self has a pragmatic focus. Moreover, regression analysis shows that pre-service teachers' intrinsic motivation, and their ideal selves contribute most to their motivated learning behavior.
Advancing asymptotic approaches to studying the longitudinal and torsional oscillations of a moving beam
Authors: Slipchuk Andrii , Pukach Petro , Vovk Myroslava , Slyusarchuk Olha
Published: July 2022

This paper analyzes the influence of kinetic and physical-mechanical parameters of systems on the characteristics of dynamic processes in moving one-dimensional nonlinear-elastic systems. Improved convenient calculation formulas have been derived that describe the laws of changing the amplitude-frequency characteristics of systems for both a non-resonant case and a resonant one. An important issue of studying the influence of the speed of movement of elements of mechanisms on the oscillations of one-dimensional nonlinear-elastic systems has not been considered in detail until now in the scientific literature. This issue relates to the vibrations of shafts in gears, pipe strings when drilling oil and gas wells, the oscillations of turbine blades and rotating turbine discs, the longitudinal vibrations of the beam as an element of structures. The main reason for this in the analytical study of dynamic processes were the shortcomings of the mathematical apparatus for solving the corresponding nonlinear differential equations that describe the laws of motion of those systems.
It was found that in the case of longitudinal oscillations in the moving beam with an increase in the longitudinal speed of the medium to 10 m/s, the amplitude of the oscillation also increases by 13.5 %. However, when the longitudinal velocity of the beam is 5 m/s, the amplitude will increase by only 3 %. It is established that with the growth of the amplitude, the frequency of longitudinal oscillations decreases sharply, and if the system moves at a higher speed, for example, 20 m/s, it reduces the frequency of oscillation by about 13 %.
The results reported here make it possible to assess the effect of kinetic and physical-mechanical parameters on the frequency and amplitude of oscillations. The research that involved the asymptotic method makes it possible to predict resonant phenomena and obtain engineering solutions to improve the efficiency of technological equipment.
Construction of approximate solutions to the riemann problem for two-phase flow of immiscible liquids by modifying the vanishing viscosity method
Authors: Aldanov Yerbol , Toleuov Timur , Tasbolatuly Nurbolat
Published: July 2022

In the paper, we apply the vanishing viscosity method for an approximate solution to the Riemann problem. This approach gives the effects of the accuracy of the solution and the speed of convergence by discrediting time and spatial variables.
The obtained method ensures the smoothness of the solution without taking into account the capillary pressure. The results confirm the negligible influence of cross-link conditions compared to the classical Darcy approach.
The proposed solutions of the new approach are intended to improve the methods and schemes of discretization both in space and in time. This is achieved by minimizing viscosity, and discretization in space and time. These factors are of paramount importance for studying phenomena with variable saturation in the transient mode and analyzing water/oil flows and migrations in real time, since discretization in space and time affects the accuracy and convergence of calculations. Our result in the form of obtaining viscous solutions of the filtration process is interesting from a theoretical point of view. From a practical point of view, numerical modeling allows early prediction of performance. Thus, the applied aspect of using the obtained scientific result is the possibility of improving the process by taking into account the influence of phases of fluid flows
Estimating the stressed-strained state of the vertical mounting joint of the cylindrical tank wall taking into consideration imperfections
Authors: Suleimenov Ulanbator , Zhangabay Nurlan , Abshenov Khassen , Utelbayeva Akmaral , Imanaliyev Kuanysh , Mussayeva Saule , Moldagaliyev Arman , Yermakhanov Myrzabek , Raikhanova Gulnura
Published: July 2022

Based on the use of a multi-level mathematical model, this paper estimates the stressed-strained state of a cylindrical reservoir in the mounting joint and considers the concentration of stresses in the joint zone.
The correctness of the selected mathematical model was verified to show that for an engineering assessment of the stressed-strained state of the wall of a cylindrical tank with variable thickness, it is possible to use the ratios for a cylindrical shell with a constant wall thickness. The spread of values is no more than 1 %, which indicates the proper selection of the mathematical model.
A numerical assessment of the stressed-strained state in the zone of the mounting joint proved the assumption of significant stress concentrations in the zone and indicated the determining effect exerted on the concentration of stresses by its geometric dimensions.
The concentration of stresses in the joint zone of the tank wall was investigated at various sizes in the ANSYS programming environment. The result of calculating the stressed-strained state of the reservoir for various values of the dent parameters f/t and  is the constructed polynomials that approximate the stress concentration coefficient Kσ.
As a result of the calculations, an interpolation polynomial and an approximating stress concentration coefficient were derived, which could be used to assess the strength, durability, residual life of the tank and to normalize the limiting dimensions of the imperfection of the joint.
This paper reports comparative results of the calculations of the stress concentration coefficient depending on the geometric dimensions of the imperfection of the mounting joint in the ANSYS software package, as well as using an interpolation polynomial.
The results could be used to assess the strength and residual life of such structures.
Determining the dynamics of electromagnetic fields, air ionization, low-frequency sound and their normalization in premises for computer equipment
Authors: Glyva Valentyn , Kasatkina Natalia , Levchenko Larysa , Tykhenko Oksana , Nazarenko Vasyl , Burdeina Nataliia , Panova Olena , Bahrii Mariia , Nikolaiev Kyrylo , Biruk Yana
Published: July 2022

This paper reports a study into the quantitative values and dynamics of physical factors in premises and workplaces of stationary and portable computers. The factors that are practically not perceived by the senses of operators were investigated. It is established that modern monitors do not generate electromagnetic fields of hygienically significant levels. System units generate electric fields (18‒22 V/m) and magnetic fields (220‒245 nT) that are approaching the maximum permissible. Sources of uninterruptible power supply and fluorescent lighting systems generate excess magnetic fields (up to 2250 nT and 2300 nT), respectively. The main excessive factor for portable computers is electric fields (up to 9 kV/m), which is the cause of air deionization in the user's zone of stay. It is shown that one system unit in the normative volume of the room (20 m3) deionizes air (into 100 cm-3 positive and 200 cm-3 negative). The generation of ions by modernized laser printers and photocopiers of various models (up to 1500 cm-3 and 2800 cm-3, respectively) was investigated. The distances at which the ionic composition of the air corresponds to the background values (1.0‒1.5 m) were determined. That requires the introduction of artificial air ionization in workplaces of users and a decrease in the levels of electrostatic fields. The spectral composition and amplitudes of magnetic fields of external power supplies of laptop computers were determined. It is shown that the difference in sound levels measured on the scales "Lin" and "A" reaches 24 dB, which indicates a significant impact of infrasound on users. Membrane-type protective panels configured for maximum resonant frequencies of low-frequency sound and infrasound have been proposed
Implementation of information technology (IT) in the financial reporting of the information costing under financial risks: employing a modern approach
Authors: Abd Mohammed Raed Majeed , Mahlhal Abbas Hashem , Ashour Hatem Kareem , Hasan Hussein Falah
Published: July 2022

In the research, the importance of information technology (IT) in the corporate financial reporting under financial risks by applying a current strategy is explored. It is essential for the company to have up-to-date accounting information systems that are able to meet its standards in order for it to be able to produce an accurate external financial report. In the current investigation, the utilization of accounting information systems (with a focus on Relevance, Reliability, and Information Security) helped to reduce the potential for monetary loss. A questionnaire was developed and distributed to the research sample, which included personnel who worked as financial managers, sales teams, internal auditors, and employees working in the information systems departments of the company. This was done in order to meet the objectives of the study and fulfill the requirements of the research sample. There have been no instances of delayed projects as a result of administrative or financial corruption, and a Denominator-based variable that is pertinent to this assumption is that there have been no such delays (0.33). Both Err's standard deviation (00) and the primary score are under tight control at the level of financial reporting (Logic processing) that we are now operating at 3.061. Utilizing a statistical tool allowed for the examination of data as well as analytical hypotheses. According to the findings of the study, there is a significant impact on the effectiveness of accounting information systems due to the risks posed by computerized financial reports. According to the findings, additional research ought to be done on methods that can boost accounting control efficiency, and asset protection programs in order to minimize control risks
Implementing smart farming using internet technology and data analytics: a prototype of a rice farm
Authors: Eteng Idongesit , Ugbe Catherine , Oladimeji Samuel
Published: July 2022

Precision Agriculture which includes the implementation of smart farms is gradually becoming commonplace in our present world. The Internet of Things (IoT) and also Analytics techniques are useful tools for the actualization of smart farms as they allow for information dissemination to rural farmers and also serve as a platform for monitoring farm activities. When farm activities are properly monitored, food production is optimized. As the world’s population grows, there is a greater challenge of the availability of food. The combination of IoT and data analytics has not been fully explored for Smart farming especially in developing economies. This paper proposes a FarmSmart Application using an IoT-based mobile monitoring system that combines sensors, and data analytics to manage irrigation processes and broadcast Agricultural information to farmers. The FarmSmartApp was implemented on the IntelliJ IDE using C++ and MongoDB.Python and Excel were used for the data analytics. The effectiveness of the proposed system is examined on a real-world dataset harvested from the mounted sensors. Also an initial evaluation of the system is done by stakeholders. Simple Analysis of Variance of light, moisture and temperature led to the rejection of the null hypothesis of no significance difference in mean effect among the variables since fcalc is greater than fcrit justified by p value less than 0.05. On the system evaluation, 97 % of the examined stakeholders agreed that the system delivered on the agreed functionality .The system therefore has the capacity to provide farmers with useful Agricultural information to guide irrigation procedures and Agricultural decision making
Building a model for choosing a strategy for reducing air pollution based on data predictive analysis
Authors: Biloshchytskyi Andrii , Kuchansky Alexander , Andrashko Yurii , Neftissov Alexandr , Vatskel Vladimir , Yedilkhan Didar , Herych Myroslava
Published: July 2022

This paper formalizes the model of choosing a strategy for reducing air pollution in an urban environment. The model involves determining the optimal location of biotechnological systems – biotechnological filter systems or smart air purification devices based on solving the problem of discrete optimization, taking into consideration the forecast of the air quality index. Two subtasks have been formalized, which make it possible to form a strategy for reducing air pollution. To solve one of the subtasks, a combined selective model for predicting the time series of the Air Quality Index (CSM) was built. The combined model software suite consists of the EMD-ESM hybrid model (Empirical Mode Decomposition-Exponential Smoothing Model), the HWM additive model (Holt-Winters Model), and the adaptive TLM (Trigg-Lich Model). To verify the proposed combined selective model, the time series of air quality indices (AQI) for the city of Nur-Sultan (data from 2010‒2021, period 6 hours) were selected. As a result of verification, it was established that in the case of short-term forecasting of the air quality index time series, the EMD-ESM model has an advantage according to the criterion of a minimum root mean square error (RMSE), δ=0.11. For the case of medium-term forecasting of 3<τ≤5, the combined selective model (CSM) has the advantage. The results reported here are input data for the task of choosing strategies for reducing the volume of air pollution in the urban environment. The study’s results make it possible to increase the flexibility of the formation of strategies for reducing air pollution since they avoid restrictions on the location of cleaners in specific urban areas. The consequence is the improvement of the environmental situation in the city and the development of the region in general
Improving the methodological approach to determining the number of postpostgraduates planned for admission
Authors: Maistrenko Oleksandr , Artamoshchenko Vadym , Petushkov Volodymyr , Shcherba Andrii , Balandin Maksim , Stetsiv Stanislav , Heorhadze Oleksandr , Kharabara Volodymyr , Sivak Oleksandr
Published: July 2022

The process of managing a higher institution in determining the number of postgraduates who are planned for admission is the object of this study.
The problem that was addressed is the inability to reasonably predict the need for the number of postgraduates to offset the negative consequences of staff turnover in a higher education institution.
An improved method of forecasting the trend of the time series of indicators that form the need for specialists of higher qualification has been proposed.
Special feature of the proposed method is the ability to reasonably determine the number of full-time positions of higher qualification specialists; those dismissed; postgraduates who successfully defended their thesis over a certain period. Due to this feature of this method, it is possible to form reasonable initial data for predicting the negative consequences of staff turnover in a higher education institution.
The scope of practical use of this method for determining the projected indicators is the stage of planning the educational process in a higher education institution.
A comprehensive methodology for determining the number of postgraduates who are planned for admission to postgraduate studies in specialties is proposed.
Applying the suggested procedure can make it possible to obtain the projected data with sufficient accuracy and prevent excessive recruitment, or under-recruitment of postgraduates, which will affect the expenditure of finances and the quality of higher education organization. The projected inaccuracy of the existing approach to determining the number of postgraduates compared to the proposed one is about 35 %.
The peculiarity of the methodology is the ability to justify the number of postgraduates that need to be recruited to graduate school, taking into consideration regional and sectoral contexts. Additionally, a special feature of this procedure is its versatility for any specialty and any institution of higher education.
The scope and conditions for the practical use of this set of techniques for determining the projected indicators is the process of managing a higher education institution when determining the need for postgraduates
Devising a method for segmenting camouflaged military equipment on images from space surveillance systems using a genetic algorithm
Authors: Khudov Hennadii , Makoveichuk Oleksandr , Butko Ihor , Gyrenko Igor , Stryhun Vitalii , Bilous Oleh , Shamrai Nazar , Kovalenko Anna , Khizhnyak Irina , Khudov Rostyslav
Published: July 2022

The object of this research is the process of segmentation of camouflaged military equipment in images from space surveillance systems.
The method of segmentation of camouflaged military equipment in images from space surveillance systems has been improved using a genetic algorithm. Unlike known methods, the method of segmentation of camouflaged military equipment using a genetic algorithm involves the following:
– highlighting brightness channels in the Red-Green-Blue color space;
– the use of a genetic algorithm in the image in each channel of brightness of the RGB color space;
– image segmentation is reduced to the formation of generations and populations of chromosomes, the calculation of the objective function, selection, crossing, mutation, and decoding of chromosomes in each brightness channel of the Red-Green-Blue color space.
Experimental studies were conducted on the segmentation of camouflaged military equipment using a genetic algorithm. It is established that the improved method of segmentation using a genetic algorithm makes it possible to segment images from space surveillance systems.
A comparison of the quality of segmentation was carried out. It is established that the improved method of segmentation using a genetic algorithm reduces segmentation errors in the following way:
– compared to the known k-means method, by an average of 15 % of errors of the first kind and an average of 7 % of errors of the second kind;
– compared to the method of segmentation based on the algorithm of swarm of particles, by an average of 3.8 % of errors of the first kind and an average of 2.9 % of errors of the second kind.
The improved segmentation method using a genetic algorithm can be implemented in software and hardware imaging systems from space surveillance systems
Investigation of evaluated temperature oxidation for IN-738 LC superalloy turbine blade thermally coated by AL2O3 using slurry coating process
Authors: Mousa Naseer Abdulrazzaq , Alshadeedi Bajel Mohammed , Attia Osam Hassan , Mahmood Hussein Adel , Adam Nor Mariah
Published: July 2022

The study aims to investigate the effect of Al2O3 and Al additions to Nickel-base superalloys as a coating layer on oxidation resistance, and structural behavior of nickel superalloys such as IN 738 LC. Nickel-base superalloys are popular as base materials for hot components in industrial gas turbines such as blades due to their superior mechanical performance and high-temperature oxidation resistance, but the combustion gases' existence generates hot oxidation at high temperatures for long durations of time, resulting in corrosion of turbine blades which lead to massive economic losses. Turbine blades used in Iraqi electrical gas power stations require costly maintenance using traditional processes regularly. These blades are made of nickel superalloys such as IN 738 LC(Inconel 738). Few scientists investigated the impact of Al2O3 or Al additions to Nickel-base superalloys as coating layer by using the slurry coating method on oxidation resistance to enhance the Nickel-base superalloy's oxidation resistance. In this study, IN 738 LC is coated with two different coating percentages, the first being (10 Al+90 Al2O3) and the second being (40 Al+60 Al2O3). Scanning Electron Microscope (SEM) and X-Ray Diffraction (XRD) were performed on all samples before and after oxidation. According to the results, SEM images of the surface revealed that the layer of the surface has a relatively moderated porosity value and that some of the coating layers contain micro-cracks. The best surface roughness of specimens coated with 60 % alumina+40 % aluminum was 5.752 nm. Whereas, the surface roughness of specimens coated with 90 % alumina+10 % aluminum was 6.367 nm.Results reveal that alloys with both Al2O3 and Al additions have reported a positive synergistic effect of the Al2O3and Al additions on oxidation resistance. Moreover,the NiCrAl2O3 thermal coating has good oxidation resistance and the effective temperature of anti-oxidation is raised to 1100 °C in turn reducing the maintenance period of turbine blades
Restoration and transformation of high-tech machine building industry by implementing the principles of the CALS-concept in the context of Industry 4.0 development
Authors: Volontsevich Dmitriy , Skvorchevsky Alexander
Published: July 2022

The object of this study was the processes of restoration and transformation of high-tech engineering using the principles of Industry 4.0 and CALS-concept. The problem of identifying ideas, concepts, tools and developing the principles of their application for the restoration and transformation of high-tech engineering has been solved. It is shown that the restoration of high-tech engineering, in countries affected by hostilities, is advisable to carry out using the CALS concept. The top priority CALS technology and systems have been identified. An opportunity to jump from Industry 2.0 to Industry 4.0. for countries in which mechanical engineering has suffered greatly as a result of hostilities has been shown. The principles of restoration and transformation of high-tech engineering by implementing the principles of CALS concept in the context of Industry 4.0 development have been developed. The infrastructure of the participants of the life cycle of machine-building products is proposed. A model for optimizing the production program of the defense-industrial complex has been built. The model takes into consideration the nonlinearity associated with the optimization of the production program, as well as the stochastic nature of changes in the model parameters. An adaptive approach is proposed that makes it possible to optimize the production program according to the model even for specialists without special mathematical training. The priorities of post-war reconstruction of high-tech engineering have been defined. This study will make it possible to transform and restore the machine-building industry destroyed as a result of hostilities as soon as possible. The condition for the practical use of this study is to stop the hostilities
The management of premenstrual syndrome: results of a questionnaire survey of women in Lviv pharmacies, Ukraine
Authors: Makukh Khrystyna , Horodnycha Oksana , Nepyivoda Oksana
Published: July 2022

The aim. To establish the prevalence of PMS symptoms and evaluate the medication management of this disorder in Lviv.

Materials and methods. The objects of the study were: scientific publications related to the problem of PMS; the results (n=105) of the survey. Methods applied: systematization, generalization, comparison, questionnaire. The statistical analyses (descriptive statistics, univariable analysis using simple logistic regression, multiple logistic regression) were performed with SPSS Trial.

Results. The prevalence of PMS among the surveyed was high (83,8 %). The most common complaints are abdominal and/or low back pain (46,6 %) and increased irritability/aggression (43,2 %). Almost half (46,6 %) of women who experienced PMS consult a pharmacist, and only 23,9 % seek medical advice. At the same time, 87,5 % (n=77) of women (among those suffering from PMS) use medicines to alleviate/eliminate the symptoms of PMS. Nonsteroidal anti-inflammatory drugs (77,6 %), sedatives (36,8 %), and complex herbal remedies that affect the genital system (18,4 %) are the most common drugs for PMS.

Choosing the way of PMS management, 44,8 % of women would prefer herbal medicines to synthetic ones. Both previous using of synthetic drugs for PMS and adverse drug reactions to synthetic drugs have a statistically significant contribution to a positive attitude towards herbal remedies (p=0,004 and p=0,026, respectively).

Conclusion. PMS is a common medical and social issue. Achieving effective and safe medication management of PMS requires the joint participation of a physician, pharmacist, and the patient in terms of compliance and lifestyle adjustments
Urban avifauna diversity in Stellenbosch, South Africa, during the COVID-19 lockdown and observations of inner-city foraging behaviour
Authors: Baxter-Gilbert James , Riley Julia L.
Published: July 2022

In times of isolation or confinement, making regular natural history observations can not only represent a source of enjoyment, but generates insights into local avian ecology. Here we present an account of the urban bird diversity of Stellenbosch, South Africa, derived from daily observations of species presence collected during the initial two stages of the country’s nationwide COVID-19 lockdown period (66 days). A total of 38 bird species were observed during this time, including sightings of urban hunting behavior for birds of prey and greenspace foraging in general. The most commonly seen taxa were typical human-commensal species, including sparrows and doves. Many species were encountered far less frequently, with 21 of the 38 species being observed on less than 10 days. This was most notable for birds of prey (n = 6 species from Accipitriformes and Falconiformes) or African swifts (n = 2 species from Apodiformes), which were recorded only a few times for any given species. Our account provides some relatively niche information regarding the presence of birds from a single city block in South Africa and notes interesting observations of urban foraging behaviour, but also underscores the value of birdwatching during times of uncertainty.
Slow-release agricultural pesticide formulations: state of the art
Authors: Boyandin Anatoly N. , Sukhanova Anna A. , Ertiletskaya Natalya L.
Published: July 2022

The need for a long-term sustaining of optimal concentrations of applied pesticides in the soil in agriculture resulted in the development of systems for controlled release of active substances. Such systems are based on the use of eco-friendly carrier materials that are harmless to plants, humans and environment. Inorganic substances (e.g., clays or alike substances), biodegradable polymers of natural or synthetic origin, blends of such polymers and their composites with inorganic fillers can be used as carriers. The deposited pesticides are released by diffusion or, in the case of systems based on biodegradable polymers, by degradation of the carrier. Inorganic carriers are usually impregnated with a pesticide. As for polymers, there is a wide range of methods for obtaining forms. Namely, these are the microsphere and nanoparticle formation, film casting, tablet pressing, form gelatinizing, and coprecipitation of a pesticide and a polymer from a solution. Co-extrusion of pesticides with polymers or their composites at temperatures below the degradation temperature of the components is another promising method for obtaining pesticide carriers.
Catalytic cracking of M-100 fuel oil: relationships between origin process parameters and conversion products
Authors: Shakiyeva Tatyana V. , Sassykova Larissa R. , Khamlenko Anastassiya A. , Dzhatkambayeva Ulzhan N. , Sassykova Albina R. , Batyrbayeva Aigul A. , Zhaxibayeva Zhanar M. , Ismailova Akmaral G. , Sendilvelan Subramanian
Published: July 2022

The development of technologies for processing oil residues is relevant and promising for Kazakhstan, since the main oil reserves of hydrocarbons in the country are in heavy oils. This paper describes the study of the influence of technological modes on the yield and hydrocarbon composition of products formed because of cracking of commercial fuel oil and fuel oil M-100 in the presence of air in the reactor. For catalysts preparation, natural Taizhuzgen zeolite and Narynkol clay were used. It was found that the introduction of air into the reaction zone, in which oxygen is the initiator of the cracking process, significantly increases the yield of the middle distillate fractions. In the presence of air, the yield of diene and cyclodiene hydrocarbons significantly increases compared to cracking in an inert atmosphere. According to the data of IR spectral analysis of M-100 grade oil fractions, in addition to normal alkanes, the final sample contains a significant amount of olefinic and aromatic hydrocarbons. On the optimal catalyst, owing to oxidative cracking of fuel oil, the following product compositions (in %) were established: Fuel oil M-100: gas – 0.8, gasoline – 1.1, light gas oil – 85.7, heavy residue – 11.9, loss – 0.5 and total – 100.0%; commodity Fuel oil (M-100): gas – 3.3, gasoline – 8.4, light gas oil – 84.3, heavy residue – 4.0, loss – 0 and total – 100.0%.
Activity features of catalysts for thermocatalytic hydrogenation processing of polymer waste
Authors: Tashmukhambetova Zheneta Kh. , Kalamgali Tanakoz O. , Aubakirov Yermek A. , Sassykova Larissa R. , Akhmetova Firuza Zh. , Alpysbay Albina S.
Published: July 2022

The aim of this study was to obtain new catalysts for the processing of carbon-containing polymer waste based on polyethylene and polypropylene, represented mostly by lids from beverages bottled in plastic containers, which accumulate in huge quantities in landfills, by the method of thermocatalytic hydrogenation into liquid fuels and other products. The process was carried out in the presence of fuel oil as a binder, a source of hydrogen and additional hydrocarbons. Thus, two tasks can be solved simultaneously: recycling the polymer waste and obtaining the alternative raw materials from the polymer waste in order to save resources and improve the environmental situation in general. New catalysts based on activated zeolite modified with Mo(VI) and W(VI) salts of various concentrations for the thermocatalytic hydrogenation processing of waste plastics into motor fuels were synthesized. The composition, structure, morphology and adsorption properties of the catalysts were determined by different physicochemical methods. The suitability of the obtained catalysts for use in the thermocatalytic hydrogenation processing of plastic waste into fuels was determined. The catalysts were tested during the processing of a mixture of polyethylene-polypropylene: a paste-forming agent (fuel oil) at T=450 °C and a pressure of 0.6 MPa. The individual and group composition of gasoline, diesel and gas oil fractions was determined by chromatography coupled with mass spectrometry. The maximum yield of the gasoline fraction (16.9 wt.%) and diesel fraction (39.31 wt.%) was obtained on a 2%W(VI)/diatomite catalyst.
Multidimensional context of technical nursing education: triangulation of meanings attributed by teachers
Authors: Sousa Bruna Sabrina de Almeida , Nunes Benevina Maria Vilar Teixeira , Rocha Porto Fernando , Sampaio Nery Inez , Moura Maria Eliete Batista , Carvalho Herica Emilia Félix de
Published: July 2022

ABSTRACT Objective: To unveil and discuss the meanings attributed by teachers to the teacher-student relationship in the multidimensional context of technical nursing education. Method: Qualitative research, supported by the representational theory of meaning, carried out with nine nurses who teach the technical nursing course at a technical school linked to a federal university in the northeastern region of Brazil. Results: The following meanings were revealed: student profile; lack of preparation and financial resources; reduction in performance and even course interruption; students’ disinterest and resistance; academic support and qualified structure; opportunity for grants; teachers’ dedication and holistic view; respect, ethics, and interactivity; concern with student learning and performance, and heterogeneous group. Conclusion: Social and financial difficulties and students’ disinterest are the limitations that most hinder teaching effectiveness. On the other hand, the teachers’ holistic view, dedication, support, and the availability of resources and academic support are the main multidimensional characteristics of living in this scenario.
Contexto multidimensional do ensino técnico de enfermagem: triangulação de significados atribuídos por docentes
Authors: Sousa Bruna Sabrina de Almeida , Nunes Benevina Maria Vilar Teixeira , Rocha Porto Fernando , Sampaio Nery Inez , Moura Maria Eliete Batista , Carvalho Herica Emilia Félix de
Published: July 2022

RESUMO Objetivo: Desvelar e discutir os significados atribuídos por docentes à relação entre professor e aluno no contexto multidimensional do ensino técnico de enfermagem. Método: Pesquisa qualitativa, apoiada na teoria representacional do significado, realizada com nove enfermeiros docentes do curso técnico em enfermagem de um colégio técnico vinculado a uma universidade federal da região nordeste do Brasil. Resultados: Foram desvelados os significados: perfil dos alunos; falta de preparo e de recursos financeiros; queda do rendimento e até interrupção da formação; desinteresse e resistência dos alunos; suporte acadêmico e estrutura qualificada; oportunidade de bolsas de auxílio; dedicação e olhar holístico dos docentes; respeito, ética e interatividade; preocupação com o aprendizado e desempenho do estudante, e grupo heterogêneo. Conclusão: Dificuldades sociais, financeiras e o desinteresse estudantil são as limitações que mais dificultam a efetividade do ensino. Por outro lado, o olhar holístico, a dedicação, o apoio dos docentes e a disponibilidade de recursos e suporte acadêmico são as principais características multidimensionais da vivência nesse cenário.
Temporal genetic structure of a stock of Prochilodus lineatus (Characiformes: Prochilodontidae) in the Mogi-Guaçu River ecosystem, São Paulo, Brazil
Authors: Rosa Ivana F. da , Oliveira Daniela J. de , Cruz Vanessa P. da , Ashikaga Fernando Y. , Costa Gabriela Omura , Doretto Lucas B. , Senhorini José A. , Rocha Rita de C. , Foresti Fabio P. , Oliveira Claudio , Foresti Fausto
Published: July 2022

Abstract Prochilodus lineatus is a species of migratory fish widely distributed in the Paraná River basin, found mainly in the Grande, Pardo and Mogi-Guaçu rivers located in a well-developed region of the state of São Paulo. This study analyzes the genetic diversity and population structure in shoals of P. lineatus based on temporal analysis of specimens sampled over the years 2003, 2005, 2006, 2009, 2010, and 2015 in the Mogi-Guaçu River, São Paulo, at the region of Cachoeira de Emas. Genetic analysis performed using the D-Loop and seven microsatellite marker revealed significant genetic variability in all sampled groups. Moderate levels of structuring between groups were identified with the microsatellite markers (Fst = 0.14), while the mitochondrial marker did not reveal patterns of genetic structuring (Fst = 0.01). The genetic variability fluctuated over time, characterizing patterns of structuring among the analyzed samples. The occurrence of environmental alterations resulting in increased mortality rates, as well as changes in the water level in the ecosystem, among other factors, could determine changes in the reproductive behavior of species. The lack of favorable environmental conditions for reproduction in the basin, as reflected by tests of population bottlenecks, could have resulted in the differentiation of populations of P. lineatus over time.
Quantification of chlorophyll fluorescence in soybean seeds by multispectral images and their relationship with physiological potential
Authors: França-Silva Fabiano , Cicero Silvio Moure , Gomes-Junior Francisco Guilhien , Medeiros André Dantas , França-Neto José de Barros , Dias Denise Cunha Fernandes Santos
Published: July 2022

Abstract: The multispectral image analysis technique to detect chlorophyll fluorescence (CF) in soybean seeds was studied to assess the relationship between CF signals and seed physiological potential. Eight treatments, corresponding to 0%, 2%, 4%, 6%, 8%, 10%, 12%, and 14% green seeds, were used on two cultivars, BMX Desafio RR 8473 RSF and 96R10 IPRO, which passed through different seed quality tests. Initially, the CF of the seeds was determined using 660 nm and 730 nm spectra, and then the germination, electrical conductivity, accelerated aging with saturated NaCl solution, tetrazolium, and computerized seedling image analysis (Vigor-S) tests were performed on the same seeds. A completely randomized design was used, as well as replications of each treatment. Analysis of variance (ANOVA) was performed on the data from germination, vigor, and CF tests using the R® software, and the means were grouped by the Scott-Knott test (p ≤ 0.05). Pearson’s linear correlation coefficients (r) were calculated for all combinations among the evaluations with significance of the r values determined by the t-test (p ≤ 0.05), and multivariate analysis of the principal components was performed. Proportional increases in green seeds contribute to an increase in chlorophyll fluorescence signals and have a negative correlation with seed physiological quality; levels above 4% green seeds in the samples result in marked losses in physiological potential. Therefore, the chlorophyll fluorescence detected through multispectral images is inversely related to the physiological potential of soybean seeds.
La multiculturalidad y el diseño de planes docentes inclusivos: el caso del Grado en Información y Documentación de la Universidad de Extremadura (España)
Authors: CALDERA María-Dolores , FABA-PÉREZ Cristina , GÓMEZ-CRISÓSTOMO Rocío
Published: July 2022

Resumen: El presente trabajo es una propuesta viable de incorporación de contenidos relacionados con la diversidad cultural en los planes docentes del Grado en Información y Documentación de la Universidad de Extremadura, España. Estos nuevos contenidos se justifican, esencialmente, por tres razones: el amplio espectro social que este colectivo ocupa, el derecho de todas las personas a que se cubran sus necesidades de alfabetización informacional y digital, y el hecho de que los egresados estén mejor preparados para afrontar estos retos, abriendo para ellos nuevas salidas profesionales. Por eso, para cada una de las 45 asignaturas del Grado mencionado, se diseña un tema específico, una breve explicación del mismo y un ejemplo de aplicación práctica. Previamente, se analizan los planes docentes de todos los Grados en Información y Documentación vigentes en las universidades españolas en el curso 2019-2020 (un total de 350 planes), para ver la representación de dicho colectivo en los Grados españoles, con un resultado muy escaso (2,85%). Se concluye con la posibilidad de extrapolar el proceso metodológico de la presente investigación, e incluso algunos de sus resultados, a estudios universitarios similares impartidos en otras universidades, tanto españolas como de otros países.
Semihydroponic and ebb-and-flow systems for calla lily cultivation
Authors: Boldrin Karina Volpi Furtini , Paiva Patrícia Duarte de Oliveira , Barbosa Juliana Caldeira Victer , Torquetti Sabrina dos Santos , Almeida Elka Fabiana Aparecida , Reis Simone Novaes , Landgraf Paulo Roberto Corrêa
Published: July 2022

Abstract The soilless cultivation of plants is an alternative for the production of flowers with high quality. Calla lily is normally produced on soil benches, but have shown some limitations as bacterial infections occur. One alternative may be a soilless cultivation. Hence, experiments were conducted with the objective to evaluate the development of calla lily in two types of hydroponic production systems. The semihydroponic system was tested using as substrates or growing media such as, coconut fiber, sand, vermiculite, and phenolic foam sheets. For the other system, ebb-and-flow, the substrates tested were vermiculite, coconut fiber, and expanded clay. Two different nutritional solutions were tested in both systems. in the semihydroponic system. In general, calla lily was adapted and showed a good development in a soilless cultivation. The best initial development of the calla lily was provided using vermiculite and sand as substrates on semihydroponic. And for the ebb-and-flow system, coconut fiber induced better development. As conclusion, hydroponic cultivation systems are efficient for the initial development of calla lily. The recommended substrates are those with lower porosity, such as sand, vermiculite, and coconut fiber.
Asymbiotic seed germination and in vitro development of orchid Papilionanthe Miss Joaquim
Authors: Patavardhan Sachin Suresh , Ignatius Susan , Thiyam Rinda , Lasrado Queenie , Karkala Sulakshana , D’Souza Leo , Nivas Shashi Kiran
Published: July 2022

Abstract Orchids with their sheer variety of species are amazing, a major sharer in global floriculture trade. Papilionanthe Miss Joaquim, well known hybrid orchid, also recognized as official National flower of Singapore is a resilient, sun loving orchid, which blossoms throughout the year. Though a seed pod derived from a single flower contains millions of dusty seeds, due to lack of endosperm, seeds cannot germinate without the help of symbiont fungus. Commercial production of seedlings thus remains challenging. Therefore, in this study, we report a novel asymbiotic seed germination protocol standardized for ‘Papilionanthe Miss Joaquim’ (a hybrid of Papilionanthe hookeriana x Papilionanthe teres) which could be adapted for mass cultivation in a commercial setup. Seed of Papilionanthe Miss Joaquim were treated with 0.1% H2O2 and 0.1% KNO3 to increase the germination rates. Seed pods were also subjected to various regimes of surface sterilization methods to reduce contaminations. Employing Carbendazim (1% w v-1), Tricyclazole (1% w v-1), Sodium hypochlorite (0.5% v v-1) and Ethanol (80% v v-1) in surface sterilization process, resulted in highest percentage of aseptic cultures. Seeds were inoculated on to Murashige and Skoog (MS) medium supplemented with BAP (6-Benzylaminopurine), NAA (1-Naphthaleneacetic acid) and 2,4-Dichlorophenoxyacetic acid (2,4-D) combination of 3 mg L-1 BAP (6-Benzylaminopurine) + 0.5 mg L-1 NAA (1-Naphthaleneacetic acid) found to be most effective to induce germination (84.67 ± 3.2%). Subsequently, germinated seedlings were subjected to different levels of BAP and NAA levels to achieve the highest number of plantlets. thus, multiplied plantlets were later subcultured onto MS medium containing 0.5 mg L-1 BAP and 3 mg L-1 NAA to induce rooting. Consequently, developed plantlets were acclimatized on a substratum containing coconut husk and charcoal pieces.