bluuebunny/crossref_metadata_2025 huggingface dataset:
CFD MODELING OF THE COMBUSTION OF UKRAINIAN AND BIOMASS IN A FLARE BOILER UNIT TPP-210a
Authors: Baranyuk Alexandr , Dunayevska Nataliya , Rachinsky Artur , Vorobyov Nikita , Merenger Petro , Shevel Evgeniy
Published: December 2023

To increase the amount of energy produced with the bioresources use is the most important step in environmentally friendly electricity production. An analysis of the computer modeling results of pellet and biomass burning processes in the furnace chamber of the TPP-210a steam boiler was carried out. The scientific novelty of the work consists of determining the possibility and perspective of using non-design types of fuel, such as gas coal of domestic production and solid biomass (instead of anthracite), as a raw material base of existing boiler units. On the basis of this analysis, it was determined that the model allows to quite accurately assess the aerodynamic structure of the flow in the burners and the boiler furnace. Such a precise assessment is possible if the thermophysical properties of the burning fuel are accurately specified. The average integral temperature of the combustion products in the fuel during the gas coal burning is higher than while burning other fuels in the form of pellets from the sunflower husk and from biomass of spring wheat and winter wheat. The biomass used in the modeling has a similar chemical composition; therefore, the temperature distributions in the case of their burning are also similar. Subsequently, the results of the research can be used to increase the efficiency of the combustion process when burning biofuel and to modernize fuel-burning systems of low-power boilers of industrial and municipal thermal engineering, the housing-and-utilities sector, etc.
NUMERICAL MODELING OF THE PERFORMANCE OF A PARAFFIN HYBRID ROCKET MOTOR
Authors: Morão Tiago , Brójo Francisco
Published: December 2023

A study of the regression rate of a solid grain during combustion was performed to understand the influence on the performance of the motor. An unsteady numerical model was established with a dynamic mesh to simulate the regression process of the solid fuel surface. The viscous model used was the Reynolds stress model (RSM). All the air inlets were defined as mass-flow inlets, and the exit was defined as a pressure outlet. No multiphase flow was performed and all the chemical species were in the gaseous state. Swirl injection was analyzed, and the performance was compared with experimental data. Subsequently, an alternative injection configuration (axial injection) was studied to analyze the performance improvement that it can bring to a hybrid rocket engine. The results show reasonable agreement with the experimental values and the flow inside the chamber was visualized aiding the understanding of the processes taking place and hence how the design can be improved.
The future: corporate Individualism. Is the face of capitalism changing in the 21. century?
Authors: Lovászy László Gábor
Published: December 2023

The author examines the economic, labour and social consequences of productivity from the Roman Empire (societas publicanorum) to 21st century (corporate individualism) in terms of technology and access to knowledge. The author also examines different roles of the state (government, legislation) and markets as well as education in automation, artificial intelligence and robotics pointing to one direction: accelerating digitization and reliance on artificial intelligence leads to another industrial revolution by challenging the nature of capitalism in 21st century. The argument introduces the notion of “post-renaissance polyhistors” who could change the face of capitalism within the context of “corporate individualism”, which will revolutionize the world of work and education.
Employees’ Individual Needs and their Relationship to Idiosyncratic Deals: A Latent Profile Analysis
Authors: Pestotnik Annika , Altmann Sarah
Published: December 2023

Idiosyncratic deals (i-deals) are personalized arrangements negotiated between individual employees and their employers. Whereas research has shown that i-deals positively relate to a wide array of employee attitudes and behaviors, comparatively little is known about the individual-level antecedents of i-deals. Building on the concept of needs-supplies fit, this study addresses this research gap by investigating the role of individual needs, as conceptualized by McClelland (1987), in the negotiation of i-deals. We adopt a person-centered approach that considers the interplay of the individual needs for achievement, power, affiliation, and autonomy. Using latent profile analysis in a sample of 164 employees (study 1), we explore qualitatively and quantitatively distinct profiles of individual needs. In another sample of 553 employees from various organizations (study 2), we test the replicability of the profiles and analyze differences in successful i-deal negotiation among the profiles. Our results show that four of the profiles from study 1 could be replicated in study 2. While in study 1, one profile is identified that is characterized by an extremely high need for autonomy, study 2 identifies two profiles that are characterized by a high need for autonomy. The results also reveal that employees’ membership in profiles of individual needs predicts the successful negotiation of various types of i-deals. This study provides a nuanced understanding of the relationship between individual needs and i-deals.
A Field Study on the Causes and Psycho-Social Consequences of Social Network Fatigue: The Case of Turkey
Authors: ACAR Nihal , GÜLNAR Birol
Published: December 2023

Social network usage has started to decrease since 2011 for various reasons. Research in the literature has revealed the concept of social network fatigue, which has physical and psychological consequences due to different reasons. Recent studies have emphasized that social network fatigue is dangerous for users' individual well-being, and researchers have suggested further studies due to the newness of the concept. Based on the recommendations in the literature, this research was carried out with 1100 participants from all over Turkey in a quantitative design to determine the causes and psycho-social consequences of social network fatigue. Participants in the research information on social network fatigue, social network overload, social network victimization and socio-demographic characteristics was collected. In the research constructed with the stressor-strain-consequence (SSO) model it has been understood that social network overload and social network victimization are predictors of social network fatigue. In the study, the social network fatigue experienced by the participants it has been determined that it causes physical and psychological consequences such as sudden anger, physical fatigue, exhaustion, wear-out, anger, regret, dissatisfaction, boredom, overwhelm, restlessness and stress.
Contraction of non-aqueous solutions of acids and alcohols
Authors:   Institute of Continuous Media Mechanics UB RAS, Kostarev K. G. , Torokhova S. V. ,   Institute of Continuous Media Mechanics UB RAS
Published: December 2023

Contraction is a non-additive change in the volume of a solution with a change in the concentration of one of its components. Contraction is caused by the formation of compounds based on mole-cules / ions of the solute and molecules of the solvent due to electrostatic interaction and the occur-rence of hydrogen or other bonds. This effect, inherent in all true solutions, is still rarely taken into account in the analysis of hydrodynamic and heat/mass transfer phenomena. The reason for this situation is the lack of information on contraction for most liquidsystems. To eliminate this draw-back, the presented study determines the contraction of non-aqueous solutions of mono-and polya-tomic alcohols and carboxylic acids. The obtained data are systematized and analyzed, a number of fluidsystems are proposed for laboratory modeling of diffusion processes in microgravity.
Influence of the temperature field inhomogeneity on the transfer of silicon vapor from the melt mirror to the product during high-temperature siliconization
Authors:   Perm State University, Demin V. A. , Zinurova V. E. ,   Perm State University,   Institute of Continuous Media Mechanics UB RAS
Published: December 2023

We study a modified physical and mathematical model of high-temperature transfer of silicon va-por from the melt mirror to the surface of an absorbing sample of a porous medium that occurs in a rarefied carrier medium under medium vacuum conditions. Carbon fiber of artificial origin acts as a porous medium. The process of gaseous silicon transfer from the melt mirror to the surface of the product was previously studied in the case of a uniform temperature distribution in space. Howev-er, in a real technological process this condition is generally not fulfilled. Thus, this phenomenon needs to be studied in the case of an inhomogeneous temperature distribution. It is shown that, as was the case in the previous study, the physical and mathematical model of transfer allows the de-scription of the process with the help of one nonlinear partial differential equation for the concentration.
The onset of concentration convection in a long rectangular domain of a porous medium
Authors:   Perm State University, Khabin M. R. ,   Institute of Continuous Media Mechanics UB RAS, Maryshev B. S. ,   Perm State University,   Institute of Continuous Media Mechanics UB RAS
Published: December 2023

We solve a problem of the convective flow stability in an elongated rectangular region of a porous medium. The transport of a mixture is described using the MIM (mobile-immobile media) approach. This approach consists in dividing the concentration of the solute into mobile and immobile compo-nents. The effect of density inhomogeneity on the flow of a solution in a porous medium is taken in-to account by the filtration equation within the Darcy-Boussinesq approximation. The problem is solved numerically with the use of the finite difference method. The fields of pressure and concen-tration are obtained. The influence of the parameters of the problem on the disturbance profiles is analyzed. A modified problem of stability is solved. The modification is necessary for finding the oscillatory convective mode. To obtain the solution, the spectrum of Lyapunov exponents is calcu-lated with Gram-Schmidt orthogonalization. Neutral curves are found that make it possible to detect the threshold for the onset of convection. The ranges of parameters in which oscillatory perturba-tions are realized are obtained. The effect of sorption parameters on the occurrence of oscillations is analyzed.
Refinement of the model of concentration convection in a porous medium taking into account immobilization of impurity and weak clogging
Authors:   Institute of Continuous Media Mechanics UB RAS, Klimenko L. S. , Koltsova I. A. ,   Perm State University
Published: December 2023

The influence of weak clogging on the process of a heavy impurity transport through a horizontal layer of a porous medium is studied. A constant concentration drop is set at the boundaries of the layer, the flow along the layer is maintained by a constant pressure drop. The present problem is a concentration analog of the well-known Horton-Rogers-Lapwood (HRL) problem. The equations describing the transport of the impurity taking into account the deposition (immobilization) of the impurity particles on the porous skeleton are obtained. The deposition process is described in the framework of the well-known linear sorption model (linear MIM model). Clogging is assumed to be weak in the sense that the influence of deposited particles on porosity is considered to be negli-gible and is taken into account only with respect to the reduction of the permeability of the medi-um. It is found that the basic solution to this system admits the regime of stationary filtration along the layer. In this case, the impurity distribution is linear, which coincides with the known HRL so-lution. The stability of the basic state is analyzed numerically. Neutral curves as well as minimum values of critical parameters (Rayleigh-Darcy number, wave number, and frequency) depending on the system parameters are obtained and analyzed. It is shown that the arising instability, as in the HRL problem, is oscillatory by nature. Taking into account the clogging (along with taking into ac-count the deposition) leads to an increase in the stability of the stationary filtration flow and attenu-ation of the oscillations. The study determines the limits of applicability of the linear MIM model, widespread in the literature, that does not taking into account the clogging.
Thermomagnetic convection in a hydrodynamic loop: the role of drop-like aggregates
Authors:   Institute of Continuous Media Mechanics UB RAS, Koskov M. A. ,   Perm State University, Pshenichnikov A. F. ,   Institute of Continuous Media Mechanics UB RAS
Published: December 2023

In order to clarify the effect of drop-like aggregates on the thermomagnetic convection of a fer-rofluid in a vertical hydrodynamic circuit (convective loop), two series of experiments were carried out, which differ in the dispersed composition of single-domain particles in the fluid. This particular geometry of the cavity with the ferrofluid was chosen because in a closed hydrodynamic circuit the best conditions are created for thermomagnetic convection and the heat transfer en-hancement, provided that a magnetic field is applied to the heated section of the circuit in one of its vertical sections. In this case, the field nonuniformity in the cross section of the channel form-ing the loop is sufficiently small, and the ponderomotive force acting on the liquid is directed along the tube. The heated section of the circuit, which is affected by a nonuniform magnetic field, ‘works’ as a kind of thermomagnetic pump and a circulation flow occurs in the circuit. In the first series of experiments, we used a ferrofluid containing a coarse fraction of particles capable of causing thermodynamic instability of the ferrofluid in a magnetic field (spinodal decomposition) and the formation of drop-like aggregates. The second series of experiments was carried out with a ferrofluid that had undergone magnetic separation and was free from coarse particles. It is shown that the results of convective experiments differ qualitatively depending on the disperse composi-tion of particles and the presence of drop-like aggregates. A ferrofluid with a coarse fraction com-pletely blocks the global circulation flow, including gravitational convection, while a separated ferrofluid, purified from large particles, increases the intensity of convection in a strong magnetic field and the integral heat flux by 6–7 times.
Study of the mechanical properties of materials subjected to dynamic shear loading
Authors:   Institute of Continuous Media Mechanics UB RAS, Sokovikov M. A.
Published: December 2023

This paper considers one of the methods for studying the properties of materials subjected to dy-namic shear loading. As an example problem, we have investigated the behavior of samples made of alloy АМg6 during dynamic tests conducted on a split Hopkinson pressure bar. It is shown that in the samples of this type, the shear components of the strain tensor significantly prevail over axial components in absolute values. The results of numerical simulation of the deformation of samples correlate well with the data obtained during in situ experimental measurements of temperature fields with a high-speed infra-red camera. The investigated samples can be used to study the shear resistance of materials subjected to high-speed loading in split Hopkinson pressure bar tests.
Literary Cyclization in Epic Prose (on the Problem of Comparative Analysis of the Cycle and the Novel as Genre Forms)
Authors:   Russian State University for the Humanities, Zaitseva Elvira V.
Published: December 2023

The article studies the relationship between the prose cycle and the novel. Looking at the development of the novel as a genre from a diachronic perspective, it is possible to see that between novels (Greek and antique, medieval and Rabelaisian, the Bildungsroman and the novel of formation, classical and modernist and postmodern novel) there is always a kind of intermediate ‘zone’ in which the process of preparing a new type of novel takes place. In literary studies, this ‘pre-novel’ genre form is called a prose cycle. However, in the studies of prose cyclization, there is still neither a theoretically developed approach to such literary phenomena nor unanimous opinion about their ontological connection with the novel genre. In our opinion, the theory of novel developed by M. M. Bakhtin, which deals with the fundamental features of the novel (folk culture of laughter, the incomplete present novel tense, marginal connection with reality, polyphony, multilingualism), may serve as the theoretical basis for the consideration of prose cycles. The relation between the cycle and the novel in this case is considered from the causal perspective as the relation of aprototext to the text or of a presupposition to the illocution. The paper considers contemporary literary studies on cyclization (by M. N. Darvin, V. I. Tyupa, A. S. Yanushkevich, and other researchers) in the context of the Bakhtin’s theory of novel on the basis of the assumption that there is an ontological connection between these two ‘illegal’ genre forms. In the process of analyzing these works, examined through the prism of Bakhtin's theory, one can see a gradual transformation of the cycle into the novel: from the cycles of the 1820s-30s, through Belkin's Tales, to the Russian classical novel. This opens the way to the interpretation of prose cycles taking into account the presence of the novel features in them.
Etymology and Semantic Development of the Dialect Word uros ‘trouble, misfortune’ in Connection with Traditional Komi-Permyak Beliefs about Death
Authors:   Perm State University, Shkuratok Iuliia A.
Published: December 2023

The article analyzes the etymology and semantics of the word uros in the dialects of the Perm region. Used over a large territory of the Russian language, mainly in the Russian North and in dialects genetically related to this area, the lexeme uros has the meanings: ‘stubbornness, temper (about a person, animal)’, ‘about a stubborn, capricious person’, ‘about a stubborn horse’, ‘about a touchy person’, ‘a lazy person’, and only in a limited area does it mean ‘the evil eye, a bad spell’ and ‘failure, an unfavorable turn in business or trade’. In the Russian dialects of the Komi-Permyak district, this word is used in specific narratives about the harbingers of death, where it takes on the meaning of ‘trouble, misfortune’, ‘a harbinger of trouble, misfortune’, ‘a supernatural phenomenon’. The semantic transition uros ‘a capricious, crying child’ > ‘whims, crying of a child as a consequence of a bad spell, the evil eye’ > ‘a bad spell, the evil eye’ looks obvious, while the connection between the meanings uros ‘a crying, capricious child’ and uros ‘trouble, misfortune’ is not entirely explainable on the basis of Russian dialects. This semantic transition may have occurred due to the fact that the Russian word uros was borrowed into dialects of the Komi-Zyryan and Komi-Permyak languages, where it began to mean a ghost soul, a double of a person appearing before his death (ort, urös/ures, dushenka). Apparently, the Russian dialect word uros acquired the meanings ‘trouble, misfortune’, ‘a harbinger of death’, ‘a supernatural phenomenon’ in the zone of Komi-Russian contacts, and this group of meanings is associated with the traditional ideas of the Finno-Ugric Komi people that before the death of a person his loved ones are shown the soul ort, a ghost that can appear in the form of a double, in an ornithomorphic and zoomorphic form, and can also manifest itself in other supernatural phenomena.
A Literary Debate around Gavrila Derzhavin’s Ode ‘The Depiction of Felitsa’ as Reflected in Vasily Kapnist’s Horatian Interpretations
Authors:   Lomonosov Moscow State University, Antonov Alexander Yu.
Published: December 2023

The article discusses how a literary debate around Gavrila Derzhavin’s ode The Depiction of Felitsa is reflected in Vasily Kapnist’s Horatian interpretations. In this debate, Kapnist puts emphasis on important aspects of his poetical philosophy, which was to a large extent shared by Derzhavin, who departed from these views on sincerity, permissible limits of flattery in poetry, etc. in the ode The Depiction ofFelitsa, this having provoked the literary debate. The paper shows that repercussions of this debate are also found in the later works of Kapnist – in his three Horatian interpretations dedicated to Derzhavin, namely Lomonosov (1790/91), To the Muse (1797), and Against Gold-Greed (1811–1814). In these works, Kapnist develops the same topics that we can see in the first of his odes related to the debate (A Raphael’s Answer to the Felitsa’s Poet). The paper analyzes the evolution of Kapnist’s views on the essence of the debate: it is shown how various are his attitudes to this issue in different periods of his life. The ode Lomonosov, which uses the Horatian pretext only as a source from which it takes its compositional scheme, appears to be a ‘softened’ version of A Raphael's Answer to the Felitsa’s Poet, devoid of some ‘satirical’ subtext. Lomonosov represents a kind of example to follow that shows Derzhavin how to write odes sincerely and selflessly. In the ode Against Gold-Greed, Kapnist repeats the model of A Raphael's Answer to the Felitsa’s Poet: he starts from correcting exclusively poetic ‘flaws’ of the Derzhavin's ode, seeking a more accurate translation of some passages of the Horace’s ode in his own interpretation, and then he again turns to the theme of excessive flattery of the Derzhavin’s ode.
Models of the future life in the biographical project of high school students
Authors:   Sociological Institute of the RAS, Federal Center of Theoretical and Applied Sociology of the Russian Academy of Sciences, Divisenko Konstantin S.
Published: December 2023

The processes of individualization, destandardization of the life trajectory, the weakening of cultural continuity in modern society force the individual to rethink and correct his own life trajectory at different stages of personal history. Modern sociology pays special attention to perceptions of the future as a social fact that influences social outcomes for individuals. The article examines the image of the future in the context of an individua’s biographical project through the example of the plans for life of high school students in St. Petersburg. Special emphasis is placed on the relationship between the desired image of the future, life ideals, plans and strategies, which gives the key to understanding modern socio-cultural transformations at the level of individual persons. Quantitative and qualitative methods of study made it possible to find and describe types of ideas about the future and the factors that determine them. Three models of gender-marked ideas of high school students about their future family life and professional trajectory were identified based on the analysis of intersections of gender representations and reproductive intentions. Traditional, neo-traditional, and emancipatory meanings are analyzed in the context of biographical project. It is shown that religiosity (the importance of God) is connected neither with the solution of existential issues by teenagers nor with their subjective well-being, i.e., realizes neither the worldview function nor the compensatory one. The connection of religiosity with the reproduction of traditional values allows us to consider it as an axiological component of biographical project. The results indicate that family and childbearing generally remain significant for high school students although the alternative intention toward a non-family future is also clearly seen in biographical project.
Сatamine AB effect on the complex formation of bromopyrogallol red with scandium ions
Authors:   Perm State University, Denisova Svetlana A. , Zaborskikh Mariya V. ,   Institute of Technical Chemistry of the Ural Branch of the Russian Academy of Sciences, Zabolotnykh Svetlana A. ,   Perm State University,   Institute of Technical Chemistry of the Ural Branch of the Russian Academy of Sciences
Published: December 2023

The regularities of complexation of bromopyrogallol red with scandium ions in the dual system and in the presence of cationic surfactant catamin AB have been studied. The optimum pH interval of complexation was determined. The light absorption spectra of the dye and its complexes with scandium ions in dual systems and in the catamin AB presence at different pH values and surfactant concentrations were recorded. The ratio between metal ion and reagent in complexes without and in the presence of catamin AB was determined by saturation and isomolar series methods at pH 5,90 and 6,40. The conditional stability constants of the obtained complexes were determined by the Babko method, calibration graphs were constructed, and molar light absorption coefficients were calculated. The influence of interfering ions was studied at pH 6,40.
Cadmium extraction in the delaminating system diphenylguanidine – benzoic acid – water
Authors:   Perm State University, Kuimova Zhanna Yu. , Alikina Ekaterina N. ,   Perm State University
Published: December 2023

An delaminating system with diphenylguanidine and benzoic acid without an organic solvent was studied in order to evaluate its effectiveness in relation to the cadmium ions extraction. Extraction was studied in the presence of an inorganic (hydrochloric) acid or inorganic bases (sodium or ammonium hydroxide), as well as inorganic complexing agents (KI, NH4SCN). The optimal conditions for the cadmium extraction have been determined. It is shown that the most efficient cadmium extraction was observed when sodium hydroxide was introduced into the delaminating system. It has been established that with an increase in the concentrations of both diphenylguanidine and benzoic acid, the cadmium extraction increases. It was found that the quantitative extraction of cadmium was observed only in the presence of an inorganic complexing agent – potassium iodide.
PRODUCED WATER TREATMENT BY MEANS OF VIBROACOUSTIC ACTION
Authors: Mukhamadeev Rishat U. , Vlasova Galina V. , Usenkov Andrey V.
Published: December 2023

Growth in production of formation water during prolonged operation of oil fields, the task of more complete extraction of oil from the low permeable horizons, and in many cases, low-porosity strata reception making demands of effective integrated water treatment technology for each individual object. The main criteria for choosing the technology of preparation of produced water is the ability to intensify the process of removing contaminants from produced water, reducing the possibility of metal equipment and costs of treatment. The article covers vibro-acoustic method of formation water treatment showing most favorable production conditions.
STAGES OF ACCUMULATION OF OIL DROPLETS AND GAS BUBBLES IN THE DOME FOR CASES OF DEEP-SEA SPILLS: PART 1
Authors: Kildibaeva Svetlana R. , Stolpovsky Maxim V.
Published: December 2023

The paper considers the process of installing a special device – a separator dome, which is designed to eliminate deep-water spills, the occurrence of which is associated with the deep-sea development of oil fields or oil transportation through underwater pipelines. Modeling of special devices for eliminating the consequences of deep-sea leaks is a very important task. This is due to the large volumes of oil production in the shelf. Oil spills in various areas of the seas of the World Ocean (Gulf of Mexico, North Sea) have shown that there is still no qualitative method that can quickly and efficiently solve the problem of oil spills. The main methods for eliminating leaks are associated with the collection of oil already on the surface of the reservoir. The work describes the entire sequence of actions aimed at collecting hydrocarbons in the dome, and each of the stages is considered in detail. Separately, the condition is considered how to exclude the ingress of gas hydrates into the device, as this may interfere with its proper operation. In order to eliminate the possible accumulation of hydrate particles inside the dome, the dome is filled with an immiscible liquid with water (ILW). In the first part of this work, the stages of installation of the device and the general philosophy of the process of accumulation of hydrocarbons inside are described in detail, and the basic equations describing the first three stages of the installation are also given. The process of migration of oil droplets inside the dome, the process of accumulation of oil droplets inside the dome, the interaction of oil and ILW solution is described in detail. At the first stage, the process of migration of oil droplets that penetrate into the dome through the open lower base is considered. Droplets falling inside the dome migrate in a layer of alcohol solution, and then, reaching the upper surface of the dome, begin to form a layer of oil. To estimate the temperature of the accumulated oil layer, the interaction with the ILW layer is calculated by calculating the heat flow.
Successful Endovascular Management of Juxta Internal Iliac Vessel Pseudoaneurysm with Allograft Preservation in Post-Renal Transplant
Authors:   Department of Urology, Civil Hospital, Ahmedabad, Gujarat 380016, India, Shah Shrenik J. , Shah Tejanshu ,   Apollo Hospital International LTD, Ahmedabad, Gujarat 382428, India and Chief Urologist, SAL Hospital, Ahmedabad, Gujarat 380054, India, Visana Kirtipal N. ,   Department of Urology, Shrey Hospital Pvt Ltd, Ahmedabad, Gujarat 380009, India, Parekh Apurva ,   Department of Urology, Civil Hospital, Ahmedabad, Gujarat 380016, India, Gandhi Rozil ,   Department of Urology, Civil Hospital, Ahmedabad, Gujarat 380016, India, Patel Karan ,   Department of Urology, Civil Hospital, Ahmedabad, Gujarat 380016, India, Patel Niraj ,   Department of Urology, Civil Hospital, Ahmedabad, Gujarat 380016, India
Published: December 2023

Vascular complications following renal transplant surgery are extremely uncommon, and pseudoaneurysm is even rarer, with an incidence of 0.3%. The presentation can vary from acute blood loss to chronic dull aching pain, anorexia, etc. Majority of pseudoaneurysms are associated with allograft loss. We present a case of an anastomotic pseudoaneurysm successfully managed with an endovascular approach. A 54-year-old female, post cadaveric renal transplant (end-to-end anastomosis between the renal artery and right internal iliac artery) presented on post-operative day 159 with complaint of fever with chills. On treating conservatively with antibiotics, the fever subsided, only to recur after 5-days. On further investigation, c-reactive protein (CRP) was found to be persistently elevated. Patient’s fever of unknown origin was further investigated with repeat blood culture and fluoro-D-glucose (FDG) positron emission tomography (PET)/computed tomography (CT). Blood culture was positive for Klebsiella pneumoniae sensitive to colistin and tigecycline and FDG-PET showed a 5 cm aneurysm of the juxta anastomotic segment of the right internal iliac vessels, a possible pseudoaneurysm. After a multidisciplinary discussion, the patient underwent renal angiography, an aneurysm was delineated, and a covered stent was placed which partially excluded the aneurysm. The patient responded well to the intervention. Pseudoaneurysm formation is a rare and potentially life-threatening complication and can present even in the late post-operative period. Endovascular management can be a safe approach in carefully selected cases with allograft preservation being of paramount importance.
Our Experience of Laparoscopic Living Donor Nephrectomy
Authors:   Department of Urology, Civil Hospital, Asarwa, Ahmedabad, Gujarat 380016, India, Shah Shrenik J. , Shah Tejanshu ,   KD Hospital, Ahmedabad, Gujarat 382421, India and Apollo Hospital International LTD, Ahmedabad, Gujarat 382428, India, Visana Kirtipal N. ,   Shalby Hospital, Ahmedabad, Gujarat 382325, India, Jha Abhishek ,   Department of Urology, Civil Hospital, Asarwa, Ahmedabad, Gujarat 380016, India, Davara Chirag ,   Department of Urology, Civil Hospital, Asarwa, Ahmedabad, Gujarat 380016, India
Published: December 2023

Background Donor nephrectomy for living donor kidney transplantation using minimally invasive techniques is a safe procedure that has been used for more than 20 years with excellent results. The total minimally invasive approach offers decreased postoperative pain, better cosmesis, a lower chance of incisional hernia, and a faster recovery time. Methods We present the results of a series of 120 laparoscopic donor nephrectomies performed at our center. The procedures were performed with transperitoneal access using the standard five ports. The main renal artery and vein were ligated using a hemo-o-lock clip. The specimen was extracted through the additional inguinal incision. Results All procedures were performed laparoscopically without conversion to open surgery. The average warm ischemia time was 4.0 min. In all recipients, immediate kidney allograft function was seen. Conclusion Total laparoscopic living donor nephrectomy is a safe procedure that gives the highest benefit to the donor. It was performed successfully in all cases, with a short operative time and no morbidity or mortality.
Mind in Crisis: Examining the Cognitive Consequences of the COVID-19 Pandemic
Authors:   Department of Psychology, Akal University, Talwandi Sabo 151302, Punjab, India, Pervez Rikza
Published: December 2023

The coronavirus disease-2019 (COVID-19) pandemic devastated the world, leaving in its wake not only physical devastation but also significant psychological trauma. Fear and uncertainty became pervasive, leading to widespread anxiety, depression, and post-traumatic stress disorder. While the pandemic’s impact on mental health received significant attention, its effects on cognitive function were overlooked until recently. Studies suggest that the pandemic led to declines in cognitive performance, affecting memory, attention, and executive functioning. The present article explores the cognitive impact of the pandemic, examining the mechanisms through which it affected cognitive function and analyzing its long-term consequences. While the pandemic’s immediate impact has waned, its long-term cognitive effects may linger, emphasizing the need to address this overlooked aspect of the pandemic’s impact. By understanding the pandemic’s cognitive impact and taking steps to mitigate it, individuals and society can better recover and move forward from this unprecedented global crisis.
Auditoría de gestión y su impacto en el índice de morosidad de las cajas municipales de ahorro y crédito en Lima, periodo 2022
Authors: Orellano La Rosa Claudia Patricia , Silva Navarro Jair Alonso , Salas Lino Jaqueline Rosario , Zapata Arevalo Katherine Lisset , Gutiérrez Flores Jenny Milagros
Published: December 2023

El presente artículo de investigación tiene como objetivo determinar cómo la auditoría de gestión impacta en el índice de morosidad en las cajas municipales de ahorro y crédito en la ciudad de Lima durante el periodo 2022. Se escogió dos variables, la variable independiente auditoría de gestión con sus dimensiones evaluación del plan de gestión, ejecución del plan de gestión e informe de los resultados. Por otro lado, la variable dependiente índice de morosidad con sus dimensiones incumplimiento de pago y evaluación crediticia. La muestra estuvo compuesta por cinco cajas municipales de ahorro y crédito de Lima, la metodología que se empleó fue con enfoque cualitativo de diseño no experimental tipo descriptivo y correlacional, además, utilizó como técnica de recolección de datos la entrevista en profundidad de la cual se analizó detalladamente el contenido de la información.  Los resultados señalaron la importancia de la auditoría de gestión como una herramienta esencial para evaluar y analizar la eficiencia en la gestión del proceso de concesión de créditos, detectar deficiencias y proponer acciones correctivas y de mejora.
Bajo una mirada de la NIC 2: Los costos y su efecto en la rentabilidad de las PYMES del sector avícola en Lima Metropolitana, año 2022
Authors: Cutti Figueroa Leoncio , Gianmarco Obedd García Caso , Carlos Andree Galindo Escobar , Mirian Karen Zapata Juarez , Jenny Milagros Gutiérrez Flores
Published: December 2023

El presente trabajo presenta un análisis de los costos del sector avícola según los lineamientos de la Normas internacionales de contabilidad 2 (Inventarios) y su efecto en la rentabilidad. La aplicación de esta norma puede tener un impacto significativo en la rentabilidad de las empresas PYMES del sector avícola en Lima Metropolitana, ya que los costos de los inventarios tienen un efecto directo en el costo de ventas y, por lo tanto, en la utilidad bruta. Es esencial que estas empresas comprendan la importancia de la aplicación correcta de la NIC 2 y la gestión adecuada de sus inventarios para mejorar su rentabilidad. Esta investigación empleó un enfoque cualitativo, con un diseño basado en la revisión bibliográfica. Nuestra base de datos incluyó algunas de las fuentes más relevantes, como Ebsco, Redalyc y Google Académico. Para la muestra de investigación, se seleccionaron los artículos que tengan un máximo de 5 años de antigüedad, provengan de revistas académicas y abarquen estudios realizados en toda Latinoamérica. La conclusión fue que la falta de recursos y conocimiento en la aplicación de estrategias de costeo adecuadas en el sector avícola peruano puede afectar la rentabilidad, lo que destaca la necesidad de invertir en sistemas de costeo óptimos que mejoren la gestión administrativa para reducir costos y mejorar la sostenibilidad del negocio avícola.
Una nueva visión de la gestión de costos de calidad y su influencia en la rentabilidad de las bodegas del sector vitivinícola, año 2022.
Authors: Arias Llanos Einer Giovanni , Aparicio Diaz Daniel Gerardo , Milagros Alessandra Espinoza Quispe , Farfán Rivera Valeria Teresa , Gutiérrez Flores Jenny Milagros
Published: December 2023

La presente investigación tuvo como objetivo el conocer la influencia de la gestión de los costos de calidad en la rentabilidad de las bodegas del sector vitivinícola durante el 2022. Esta propuesta surge de la necesidad de otorgar una nueva visión y un avance en el desarrollo de procesos digitales para el sector vitivinícola. La investigación tuvo un alcance tanto descriptivo como explicativo con un diseño de investigación no experimental. La población estuvo delimitada por bodegas pertenecientes al distrito de Surco en vista que dicho distrito cuenta con la mayor cantidad de bodegas en todo el país. Surco Representa el 44.7% del total de bodegas en Lima de una muestra de 154 según el Diario Gestión (Ochoa, 2017). Asimismo, el criterio para la selección de la muestra fue por conveniencia, se escogió 4 de ellas de las cuales 2 están entre las más representativas a nivel de participación en dicho distrito. Como principal instrumento de recolección de datos se empleó la técnica de las entrevistas, la cual estuvo conformada por 20 preguntas orientadas al desarrollo de nuestras variables de estudio. Finalmente, se concluyó que sí existe una influencia negativa en la rentabilidad de las empresas que no aplican costos de calidad. En adición, se hace hincapié en que la informalidad es un factor importante a tener en cuenta ya que impide el desarrollo de las bodegas, por lo tanto, la adecuada gestión de costos de calidad permitiría ordenar y sistematizar los procesos que se realizan dentro del sector vitivinícola.
La gestión estratégica y su Influencia en el Proceso de la Toma de Decisiones de Organizaciones sin Fines de Lucro
Authors: Flores Laguna Omar Arodi , Victor Manuel Velasco López
Published: December 2023

Esta investigación tuvo como objetivo evaluar en qué grado la gestión estratégica es predictor en el proceso de la toma de decisiones por parte de administradores de organizaciones sin fines de lucro en Chiapas, México. Este estudio es de tipo cuantitativo y correlacional predictivo. La muestra que se utilizó fue de 115 administradores de instituciones sin fines de lucro en Chiapas, México. Se realizó un análisis de regresión lineal, mediante el cual se encontró que la variable gestión estratégica afecta en un 84% la varianza del proceso de la toma de decisiones.
Blockchain en la transformación del Comercio Internacional de la Industria Alimentaria
Authors: Guevara Palacios Shálon Handel Yahir , Morales Paredes Dayana
Published: December 2023

El estudio examina el impacto del blockchain en el comercio internacional de la industria alimentaria, centrándose en su capacidad para mejorar la seguridad y la trazabilidad de los alimentos. El objetivo es analizar la implementación y el impacto del blockchain en la industria alimentaria, así como los desafíos y limitaciones que enfrenta. La metodología incluye una revisión sistemática de la literatura utilizando bases de datos como, Web Of Science y Scopus para recopilar información relevante. Se presentan casos de estudio relevantes que demuestran la aplicación exitosa del blockchain en el comercio internacional de la industria alimentaria. El blockchain se ha implementado con éxito por empresas líderes como Walmart, Nestlé, Unilever y más, mejorando la seguridad alimentaria y reduciendo el desperdicio de alimentos. Sin embargo, la falta de capacitación y aplicación de blockchain en la industria alimentaria sigue siendo una limitación. Se espera que la tecnología continúe creciendo y teniendo un impacto significativo en el comercio internacional de la industria alimentaria, a pesar de los desafíos presentes en su implementación.
Assessment of the impact of unintentional interference on the uplink of the control channel of an unmanned aircraft
Authors:   The Bonch-Bruevich Saint-Petersburg State University of Telecommunications, Russian Federation, Antipin Boris M. , Vinogradov Evgeniy M. ,   The Bonch-Bruevich Saint-Petersburg State University of Telecommunications, Russian Federation, Tumanova Evgeniya I. ,   The Bonch-Bruevich Saint-Petersburg State University of Telecommunications, Russian Federation
Published: December 2023

Modern unmanned aerial vehicles (UAVs) are becoming increasingly important in solving many problems, for example, when delivering goods, video recording, conducting aerial monito¬ring of the condition of remote and hard-to-reach objects, etc. When solving these problems, UAVs may experience unintentional interference from other radio-electronic equipment (RES). Currently, virtually no attention is paid to issues related to the analysis of the quality of operation of civilian UAVs in the presence of unintentional interference from other civil electronic distribution systems. The proposed method is intended to somewhat fill this gap. It is based on the assumption that a decrease in the quality of reception of useful signals in the radio control channel below a certain value due to the low signal-to-noise ratio at the input of the UAV receiver in its bandwidth will lead to errors in the UAV flight control commands and the wrong starting of on-board specialized equipment. The level of the interfering signal delivered to the UAV receiver from a stationary land-based transmitter depends on interaction areas between transmitter and receiver antenna patterns. A method for determining these areas, consisting of main and side lobes of antenna patterns, is proposed. This method can be used to solve the more general problem of analyzing the electromagnetic compatibility of UAV radio stations, control panels and ground-based electronic devices, as it is an integral part of solving this problem.
Estimation of the import substitution potential of the electronic components in the Russian Federation based on the patent documents analysis
Authors:   Federal institute of industrial property, Moscow, Russian Federation, Filatova Svetlana G. ,   Novosibirsk State Technical University, Russian Federation, Vostretsov Aleksey G. ,   Novosibirsk State Technical University, Russian Federation,   Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Buzuk Igor V. ,   Federal institute of industrial property, Moscow, Russian Federation
Published: December 2023

Since 2014, the Russian Federation has been actively supporting import substitution of pro-ducts and technologies in various areas of production. There is no doubt that the technological development and the state security base on electronic technologies primarily. This is due to the fact that they have penetrated into all spheres of our life. For example, computer equipment, control and navigation systems, mobile communications, intelligent energy, telemedicine, electric vehicles and unmanned vehicles, electronic banking transactions are just a short list of industries where electronic components are used. At the same time, the main part of the electronic component base production is currently located abroad, in China, India, Taiwan, etc. Also foreign companies located in China, the USA, India, the UK, Israel, its., own the most of the patents for devices and technologies related to the electronic component base. A significant dependence of the availability of the electronic component base on political factors were revealed by the sanctions restrictions in 2022. And this highlight the urgency of creating and developing national production of various elements of the electronic component base. The number of patents is the objective indicator of the import substitution results. In this paper, the analysis of published patent documents on the most popular passive elements of the electronic component base (resistors, capacitors, inductors) is carried out using the tools of modern patent databases. The dynamics of paten¬ting for passive electronic components in the Russian Federation over 30 years is shown. It was found that import substitution measures had practically no effect on patenting in the production of passive electronic components. The comparison of the number of Russian patent owned by domestic patent holders and by foreign companies is carried out. High potential technology domains for development have been identified. It is established that Russian manufacturers of passive electronic components have a significant potential for patenting their developments.