bluuebunny/crossref_metadata_2025 huggingface dataset:
DEVELOPMENT OF THE METHOD OF ASSESSING THE RISKS OF EMERGENCE OF EMERGENCY EVENTS DURING THE OPERATION OF DIESEL ENGINES SEA VESSEL
Authors: Сагін С.В. , Суворов П.С. , Бондар С.А.
Published: April 2024

Одним з документів, що розроблено та прийнято Міжнародною морською організацією (International Maritime Organization – IMO), є Міжнародний кодекс з управління безпечною експлуатацією суден і запобіганням забруднення (International Safety Management Code – ISM Code), якій спрямовано на забезпечення безпеки на морі, запобігання нещасним випадкам або загибелі людей та уникнення заподіяння шкоди навколишньому природному середовищу, зокрема морському середовищу і майну. Один з розділів ISM Code «Технічне обслуговування та ремонт судна і обладнання» вимагає постійного контролю стану енергетичного обладнання машинних відділень суден та оцінки рівня його безпеки. Виконання цього завдання визначається як переважним під час експлуатації суднових пропульсивних комплексів та поширюється на всі без винятку судна морського та внутрішнього водного транспорту. Її важливість додатково підтверджується введенням з боку ІМО єдиного методу формалізованої оцінки безпеки (Formal Safety Assessment – FSA), який застосовує методи оцінки ризику, при цьому величина ризику визначається добутком вірогідності події, що порушує функціонування механізму, на її наслідок
IMPROVEMENT OF THE SHOVEL APPARATUS WIND ENERGY INSTALLATIONS
Authors: Сандлер А. К. , Опришко М. О.
Published: April 2024

. Стійка світова тенденція безперервного подорожчання видобутку й транспортування паливно-енергетичних ресурсів викликає інтенсивне зростання генеруючих потужностей з використанням альтернативних джерел енергії, що поновлюються. Безумовним лідером серед яких є вітроенергетика. Аналіз розвитку вітроенергетичних установок (ВЕУ) дозволяє припустити, що до 2025 року частка вироблюваної вітрової енергії перевищить 15% від вироблюваної електроенергії, що становить половину від загального прогнозу використання альтернативних джерел.
DEEP UTILIZATION OF SECONDARY ENERGY RESOURCES SHIP COMPRESSOR INSTALLATIONS
Authors: Сандлер А. К. , Шестопалов К.О. , Єрін В. О.
Published: April 2024

У цей час у судновій енергетиці склалася напружена ситуація, обумовлена, рівною мірою, як дефіцитом та зростаючою дорожнечею вуглеводневого палива, так і незадовільної енергоэфективністю встаткування. Відповідно до цього проблема раціонального використання енергетичних ресурсів стає важливим стратегічним напрямком промислової політики України. Одним зі шляхів вирішення цієї проблеми є розробка технологій глибокої утилізації теплоти вторинних об'єктів суднових енергетичних установок. Впровадження таких технологій дозволяє суттєво (на 10 … 15 %) підвищити ефективність використання теплового потенціалу палива й забезпечити його економію, а також поліпшити екологічну обстановку у світовому океані за рахунок зниження викидів у навколишнє середовище шкідливих речовин.
MULTIASPECTED INFLUENCE OF SHIPPING I HUMAN ACTIVITIES FROM THE PERSPECTIVE OF THE PARADIGM MANAGEMENT OF WORLD OCEAN RESOURCES
Authors: Шумілова К.В. , Шумілов Д.І.
Published: April 2024

Протягом останніх десятиліть людина все більш активно освоює світовий океан та прибережні регіони, завдаючи серйозної шкоди морському середовищу. За спостереженнями вчених, океан дедалі більше стрімко змінюється, а екологічний стан погіршується швидше, ніж очікувалося. В умовах зміни клімату судноплавство і діяльність людини впливають дуже багатоаспектно, особливо на ті морські райони світового океану, що розташовані поблизу великих населених пунктів. Морській екосистемі загрожує безліч факторів, таких як забруднення, пов’язані з наземними об'єктами і суднами, екологічна нераціональна та згубна рибопромислова діяльність, незаконний та неповідомлений рибний промисел, руйнування довкілля у наслідок військових дій, збільшення рівня шуму в океані, інтродукція інвазивних видів, зіткнення китів і морських суден та видобуток корисних копалин, у тому числі нафти та газу.
The Role of an Art Object in the Formation of Characteristic Features of Interior Space
Authors: Pylypchuk Oksana , Kashchenko Oleksandr , Polubok Andrіi
Published: April 2024

The aim of the article is to study the role of different types of art objects in the formation of characteristic features of interior space. Research methods included bibliographic, typological and comparative analysis, field survey, compositional method, systematization and generalization. The scientific novelty lies in the research, analysis and systematization of the functional and aesthetic role of art objects in the formation of characteristic features of interior space. Conclusions. As a result of the study, the main features of the interior space, which can be achieved by placing an art object in it, were determined: intensification, assimilation, hyperbolization and transformation. Thus, the intensification of the interior is achieved through the dominant position of the art object, its compositional coherence with other elements, the subordination of rhythmic structures to it, and the creation of space for the effects of dynamism and expressiveness. Assimilation is achieved by subtly combining the geometric shapes of the interior space and the art object, creating a sense of balance, homogeneity, and compositional completeness. Hyperbolization relies on a pronounced semantic and stylistic contrast between the art object and the interior elements, resulting in the effect of compositional dissonance, revitalization, and at times, irony, sarcasm, and satire. Transformation involves visually altering the geometric form, size, or shape of both the interior space and the art object. This is achieved through methods such as dismemberment, emphasis, and the reconfiguration of spatial elements, leading to the effect of compositional asymmetry, dissymmetry, and dynamism. The study tested specific results in the design work of design students. The prospect for further research is to analyze the role of art objects in the qualitative transformation of modern interiors, to identify and systematize modern trends in the relationship between fine art and the object and spatial environment.
ASSESSING MUSCULOSKELETAL DISORDERS (MSDS) OF WORKERS OF FIRED CLAY BRICKS INDUSTRY
Authors:   Universitas Ahmad Dahlan, Budiyanto Tri , Adiyanto Okka ,   Universitas Ahmad Dahlan, Ma'ruf Farid ,   Universitas Ahmad Dahlan, Haryadi Hari ,   Universitas Ahmad Dahlan
Published: April 2024

Ergonomics is important for sustainable development in many fields, including architecture, health, product design, safety, and workplace design. Ergonomic assessments are essential in the workplace to prevent musculoskeletal disorders (MSDs). Currently, Indonesia has a standardized ergonomic assessment, SNI 9011:2021. This assessment standard is widely used to evaluate human posture. This study aims to evaluate the position of a traditional brick-maker in which the posture identification system is based on the SNI 9011:2021. This study employed a cross-sectional design with a sample of workers in conventional brick manufacturing. The primary findings of this study were visual ergonomic assessment for posture identification, identification of ergonomic assessment categories with high risk in brick manufacturing, and the prevalence of nagging pain among workers in the brick moulding and drying process. To reduce occupational ergonomic risk, particularly for brick-making workers, ergonomic intervention is required in the form of additional work aids such as chairs. This has been shown to reduce the evaluation score based on SNI 9011: 2021, thereby reducing the occurrence of musculoskeletal disorders
ON THE THEORY OF FRICTION SYSTEMS WITH HEREDITARY TYPE FRICTION
Authors: Igumnov L.A. , Metrikin V.S. , Starodubrovskaya N.S.
Published: April 2024

The work is devoted to the study of the nonlinear dynamics of frictional vibration systems, which take into account, when developing mathematical models of vibration systems, an essentially nonlinear function that describes the work of friction forces with memory. The problem considered in the work combines two well-known Painleve? problems and the problem of studying the friction forces of hereditary friction. In both cases, we are talking about the idealization of real elastic bodies and flexible bonds with ideal absolutely hard and rigid ones. Using the well-known experimentally proven hypothesis of A.Yu. Ishlinsky and I.V. Kragelsky about the hereditary dependence of the coefficient of friction of relative rest at low speeds of movement of bodies, the dynamic system under study is transformed from autonomous to non-autonomous, in which new types of movements that have not previously been observed in the study of vibration systems appear. In particular, taking into account the Painleve? paradox entails the previously unexpected possibility of the occurrence of instability and self-oscillations, and taking into account the heredity of the friction coefficient leads to the appearance of chaotic movements of bodies. A numerical and analytical method has been developed for studying the behavior of the dynamic characteristics of friction vibration systems depending on the chosen model of the relative static friction coefficient. Based on the main parameters, the new bifurcation diagrams presented in this work demonstrate the presence of arbitrarily complex periodic regimes of body motion, including chaotic ones. It has been established that the transition to chaotic modes of motion occurs according to the well-known period doubling scenario. Analytical relations are given for point mappings of Poincare? surfaces, which made it possible to obtain succession functions illustrating arbitrarily complex modes of body motion, including chaotic ones. It is noted that such body movements were not found during the study of such vibration systems.
INFLUENCE OF EXTERNAL CUBIC VISCOSITY ON THE DYNAMICS OF A CANTILEVER ROD LOADED WITH A TRACKING FORCE
Authors: Ovchinnikov V.F. , Kapitanov D.V. , Glazova E.G.
Published: April 2024

The analysis of the influence of external nonlinear cubic viscosity on the behavior of a cantilever rod loaded with a compressive tracking force is performed. The Bernoulli – Euler beam model is used for the describing of the rod bending deformations. After the transition to dimensionless variables, we obtained the form of notation in which the coefficients of the equation do not depend on the coefficient of cubic viscous friction. This indicates the independence of the critical load and system frequency characteristics from the level of nonlinear attenuation. Using the standard procedure of the Bubnov – Galerkin method, taking into account the first two forms of eigen oscillations, the problem is reduced to the analysis of a fourth order nonlinear system of ordinary differential equations with respect to generalized coordinates and generalized velocities. For the linear version of the equations with low attenuation, the values of the critical load are obtained in dependence on the ratio of the damping coefficients of the eigenforms. The behavior of the system is analyzed taking into account the considered cubic nonlinearity using the method of nonlinear normal forms. The problem is reduced to the analysis of a nonlinear dynamical system with one degree of freedom. There are constructive analytical methods of qualitative and approximate quantitative research for this class of problems. The critical value of the compressive force was determined by the analysis of the dependence of the first Lyapunov magnitude on the load parameter. It turned out to be less than the value corresponding to the system without damping (the destabilizing effect of external nonlinear friction). A bifurcation occurs in the system at the critical load value. Therefore, the zero equilibrium becomes an unstable complex focus of the first order and a limit cycle is born. The function of the self-oscillations amplitude of the load magnitude is constructed using the harmonic linearization method.
Towards a Unitary Hypothesis of Alzheimer’s Disease Pathogenesis
Authors: Area-Gomez Estela , Schon Eric A.
Published: April 2024

The “amyloid cascade” hypothesis of Alzheimer’s disease (AD) pathogenesis invokes the accumulation in the brain of plaques (containing the amyloid-β protein precursor [AβPP] cleavage product amyloid-β [Aβ]) and tangles (containing hyperphosphorylated tau) as drivers of pathogenesis. However, the poor track record of clinical trials based on this hypothesis suggests that the accumulation of these peptides is not the only cause of AD. Here, an alternative hypothesis is proposed in which the AβPP cleavage product C99, not Aβ, is the main culprit, via its role as a regulator of cholesterol metabolism. C99, which is a cholesterol sensor, promotes the formation of mitochondria-associated endoplasmic reticulum (ER) membranes (MAM), a cholesterol-rich lipid raft-like subdomain of the ER that communicates, both physically and biochemically, with mitochondria. We propose that in early-onset AD (EOAD), MAM-localized C99 is elevated above normal levels, resulting in increased transport of cholesterol from the plasma membrane to membranes of intracellular organelles, such as ER/endosomes, thereby upregulating MAM function and driving pathology. By the same token, late-onset AD (LOAD) is triggered by any genetic variant that increases the accumulation of intracellular cholesterol that, in turn, boosts the levels of C99 and again upregulates MAM function. Thus, the functional cause of AD is upregulated MAM function that, in turn, causes the hallmark disease phenotypes, including the plaques and tangles. Accordingly, the MAM hypothesis invokes two key interrelated elements, C99 and cholesterol, that converge at the MAM to drive AD pathogenesis. From this perspective, AD is, at bottom, a lipid disorder.
A portable induction heating system for implanted prosthesis disinfection
Authors: Álvarez-Gariburo Ignacio , García-Galán Enrique Cordero , Plaza Marina Medel , Barrena Enrique Gómez , Esteban Jaime , Sarnago Héctor , Acero Jesús , Burdío José Miguel , Lucia Óscar
Published: April 2024

Prosthetic implants, such as knee or hip prostheses, have significantly improved the wellbeing of citizens with articulation problems. However, there are still significant challenges in these procedures, being recurring infections one of the most challenging. In this context, hyperthermia has been studied as an effective alternative to antibiotics for biofilm eradication. Among the different heating alternatives, induction heating arises as the idoneous for this application due to its contactless nature and the metallic alloys used in prosthesis. This paper details the design of a portable induction heating system for implanted prosthesis disinfection.
Comparison of nonlinear solution methods for magnetic equivalent circuits of saturated induction motors
Authors: Desenfans Philip , Gong Zifeng , Vanoost Dries , Gryllias Konstantinos , Boydens Jeroen , De Gersem Herbert , Pissoort Davy
Published: April 2024

This work compares three nonlinear solution methods for the performance of an induction motor’s magnetic equivalent circuit model with magnetic saturation. The interrelation between magnetic flux density and permeability introduces nonlinearities in the differential system of equations. Three popular nonlinear solution methods are selected for comparison, namely (i) the Gauss–Seidel method, (ii) the Newton–Raphson method and (iii) the inverse Broyden’s method. While all three methods have been applied in this context before, no comparison study has been published to the authors’ best knowledge. The study finds that the inverse Broyden’s method is most performant in terms of the number of required iterations, the computation time per iteration and the resulting total computation time. However, for substantial saturation levels, the authors recommend a hybrid implementation of multiple solution methods to obtain robust and reliable convergence.
Pre-harvest treatments: A different insight into preservation of strawberries
Authors: Xu Jingcheng , Wang Ying , Chai Lin , Yin Danping , Lin Tingwei , Tao Yujia , Liu Shudong , Qi Huijuan , Gao Xianyi , Jiang Jingyong
Published: April 2024

Strawberry is one of the most favored consumed fresh fruits worldwide. However, the major constraint limiting future sustainable production and sales of strawberries is post-harvest decay. Thus, taking a deep look into the effective preservation measures including pre- and post-harvest techniques to retain freshness and inhibit the pathological spoilage of strawberries in the supply chain is of great significance and necessity. At present, relying solely on post-harvest technology is not enough to fix the aim of strawberry fruit preservation and longer shelf life. On the contrary, pre-harvest treatments could be extend shelf life of strawberry fruit and adapt to the diverse post-harvest environments. This review give the latest pre-harvest treatments, their effects on post-harvest quality and storability of strawberries, and develop the expectation of strawberries pre-harvest methods applicated in the future.
Novel Genetic and Biochemical Insights into the Spectrum of NEFL-Associated Phenotypes
Authors: Della Marina Adela , Hentschel Andreas , Czech Artur , Schara-Schmidt Ulrike , Preusse Corinna , Laner Andreas , Abicht Angela , Ruck Tobias , Weis Joachim , Choueiri Catherine , Lochmüller Hanns , Kölbel Heike , Roos Andreas
Published: April 2024

Background:

NEFL encodes for the neurofilament light chain protein. Pathogenic variants in NEFL cause demyelinating, axonal and intermediate forms of Charcot-Marie-Tooth disease (CMT) which present with a varying degree of severity and somatic mutations have not been described yet. Currently, 34 different CMT-causing pathogenic variants in NEFL in 174 patients have been reported. Muscular involvement was also described in CMT2E patients mostly as a secondary effect. Also, there are a few descriptions of a primary muscle vulnerability upon pathogenic NEFL variants.

Objectives:

To expand the current knowledge on the genetic landscape, clinical presentation and muscle involvement in NEFL-related neurological diseases by retrospective case study and literature review.

Methods:

We applied in-depth phenotyping of new and already reported cases, molecular genetic testing, light-, electron- and Coherent Anti-Stokes Raman Scattering-microscopic studies and proteomic profiling in addition to in silico modelling of NEFL-variants.

Results:

We report on a boy with a muscular phenotype (weakness, myalgia and cramps, Z-band alterations and mini-cores in some myofibers) associated with the heterozygous p.(Phe104Val) NEFL-variant, which was previously described in a neuropathy case. Skeletal muscle proteomics findings indicated affection of cytoskeletal proteins. Moreover, we report on two further neuropathic patients (16 years old girl and her father) both carrying the heterozygous p.(Pro8Ser) variant, which has been identified as 15% somatic mosaic in the father. While the daughter presented with altered neurophysiology,neurogenic clump feet and gait disturbances, the father showed clinically only feet deformities. As missense variants affecting proline at amino acid position 8 are leading to neuropathic manifestations of different severities, in silico modelling of these different amino acid substitutions indicated variable pathogenic impact correlating with disease onset.

Conclusions:

Our findings provide new morphological and biochemical insights into the vulnerability of denervated muscle (upon NEFL-associated neuropathy) as well as novel genetic findings expanding the current knowledge on NEFL-related neuromuscular phenotypes and their clinical manifestations. Along this line, our data show that even subtle expression of somatic NEFL variants can lead to neuromuscular symptoms.
Twelve Years of Drug Prioritization to Help Accelerate Disease Modification Trials in Parkinson’s Disease: The International Linked Clinical Trials Initiative
Authors: Wyse Richard K. , Isaacs Tom , Barker Roger A. , Cookson Mark R. , Dawson Ted M. , Devos David , Dexter David T. , Duffen Joy , Federoff Howard , Fiske Brian , Foltynie Thomas , Fox Susan , Greenamyre J. Timothy , Kieburtz Karl , Kordower Jeffrey H. , Krainc Dimitri , Matthews Helen , Moore Darren J. , Mursaleen Leah , Schwarzschild Michael A. , Stott Simon R.W. , Sulzer David , Svenningsson Per , Tanner Caroline M. , Carroll Camille , Simon David K. , Brundin Patrik
Published: April 2024

In 2011, the UK medical research charity Cure Parkinson’s set up the international Linked Clinical Trials (iLCT) committee to help expedite the clinical testing of potentially disease modifying therapies for Parkinson’s disease (PD). The first committee meeting was held at the Van Andel Institute in Grand Rapids, Michigan in 2012. This group of PD experts has subsequently met annually to assess and prioritize agents that may slow the progression of this neurodegenerative condition, using a systematic approach based on preclinical, epidemiological and, where possible, clinical data. Over the last 12 years, 171 unique agents have been evaluated by the iLCT committee, and there have been 21 completed clinical studies and 20 ongoing trials associated with the initiative. In this review, we briefly outline the iLCT process as well as the clinical development and outcomes of some of the top prioritized agents. We also discuss a few of the lessons that have been learnt, and we conclude with a perspective on what the next decade may bring, including the introduction of multi-arm, multi-stage clinical trial platforms and the possibility of combination therapies for PD.
Effects of upper-limb exoskeleton on muscle activity in tasks requiring arm elevation: Part II – In-field experiments in construction industry settings
Authors: Mänttäri Satu , Rauttola Ari-Pekka , Halonen Janne , Karkulehto Jutta , Säynäjäkangas Pihla , Oksa Juha
Published: April 2024

Background: The body of literature regarding the use of an upper limb exoskeleton during authentic working conditions is sparse. Objective: The aim of this study was to evaluate the effectiveness of an upper limb exoskeleton in reducing muscle strain during authentic industrial construction work. Methods: Fifteen male participants, comprising of roofers, scaffolders, builders, bricklayers, and graders performing overhead work participated in the study. During work without (REF) and with exoskeleton (EXO), muscle activity from 8 muscles, heart rate (HR), metabolic equivalent (MET), and upper arm elevation angles were recorded. Results: When using the exoskeleton, a significant reduction of 20.2% in average muscle activity of 8 muscles was found. The largest effect focused on m. deltoideus, where 46.2 and 32.2% reduction occurred in medial and anterior parts of the muscle, respectively. HR and MET were unaffected. Upper arm elevation angles were similar between REF and EXO, indicating equal biomechanical loading. Conclusions: This study indicates that exoskeletons show great promise in reducing the potential for musculoskeletal strain during authentic overhead construction work.
Design and implementation of an interactive virtual laboratory in distance education in Argentine universities
Authors: Meng Lingyan , Guo Yeyuan
Published: April 2024

The adoption of distance education (DE) in Argentine universities has long been in practice and was accelerated by the COVID-19 pandemic. The effectiveness of online learning (OL) in such situations has contributed a lot, but it has limitations, especially in delivering practical laboratory-based education. Interactive virtual laboratories (IVLs) are being designed within the framework of this attempt in order to address these types of issues. The purpose of these virtual laboratories is to provide learners who have recently graduated from DE courses in science and engineering with the potential to get hands-on training. The layout and creation of an IVL application that attempts to recreate face-to-face laboratory experiences within an online environment is the subject of examination among the researchers of the current research. This method of HE focuses on integrating college-level teaching with real-world use to provide learners with a complete education subject to their physiological limitations. The program’s goal is to address immediate challenges and provide an architecture for Argentina’s higher education (AHE) system’s constant evolution.
Detecting people in sprinting motion using HPRDenoise: Point cloud denoising with hidden point removal
Authors: Itami Taku , Takeyama Yuki , Akamine Sota , Yoneyema Jun , Ibarboure Sebastien
Published: April 2024

LiDARs are utilized in various applications, such as self-driving vehicles and robotics, to aid in sensing the environment. However, LiDARs do not provide instantaneous images and they generate noise, adding to measurement errors. This noise, often referred to as motion blur phenomenon also observed in other imaging sensors results in decreased sensing accuracy for moving objects. This study introduces HPRDenoise, a noise reduction method based on hidden point removal, specifically designed to reduce motion blur during sprinting motion. This method capitalizes on the occlusion produced by a fixed-position LiDAR. We propose a comprehensive denoising approach to filter points from a point cloud without resorting to supervised learning, unlike most existing denoising algorithms. The number of correct frames and accuracy were compared for Raw, ScoreDenoise, which is the state-of-the-art method for random point cloud denoising, and HPRDenoise (Ours). Accuracy is defined as the ratio of the number of correct frames to the total number of frames. Experimental results demonstrate that the detection accuracy of point clouds processed with HPRDenoise is 72.73%, achieving better accuracy than those using conventional methods.
The development of rhynchosporiosis and its harmfulness on winter barley crops in the conditions of the Western Forest-Steppe
Authors:   Institute of Agriculture of the Carpathian Region of NAAS, Bilovus Halyna , Vashchyshyn Oksana , Prystatska Oksana , Dobrovetska Mariia , Usenko Svitlana , Shostia Anatolii ,   Poltava State Agrarian University
Published: April 2024

The article presents the results of research on the development of rhynchosporiosis on winter barley varieties: Zbruch, Valkiria, Snihova koroleva, Dostoinyi, Status, Darii on a natural background in the conditions of the Western Forest-Steppe. It has been established that the development of this disease depends on weather conditions, vegetation phases of the culture and variety. During 2021–2023, in the phase of emergence into the tube, the lesion was 0.5–5.0%, in the ear phase – 1.0–7.0%, in the milk ripeness phase – 13.5–35.0%. The lowest development of the disease was noted in the following varieties: Snihova koroleva (14.7%), Valkiria (14.7%), Status (14.2%). The species composition of rhynchosporiosis is presented by the causative agent Rhynchosporium graminicola Heinsen. Taking into account climate changes, the development of this disease on the studied varieties increased in 2023 compared to previous years. The appearance and development of rhynchosporiosis on winter barley is facilitated by the increased amount of precipitation in the third decade of May and the first decade of June (Hydrothermal moisture coefficient was 1.4 and higher). It should be noted that damage to winter barley by this disease affects the length of the ear, the number of grains in it, the weight of the grain in the ear and the weight of 1000 grains. The coefficient of harmfulness, depending on the level of development of the rhynchosporiosis, was in Zbruch 0.24–0.38%. The higher the development of the disease, the higher the coefficient of harmfulness was. Thus, with 50% development of rhynchosporiosis, the harmfulness coefficient was 0.3; and with 75%, respectively, 0.36; at 90% – 0.38. With 90% disease development, there was a decrease in the number of grains by 5.1 pcs. compared to healthy plants. The mass of grain in an ear decreased by 0.16 g, the mass of 1000 grains decreased by 3.4 g.
Institutional and economic mechanism of competitiveness formation of ecologically oriented enterprises in the agricultural sector of the Carpathian region of Ukraine
Authors:   Institute of Agriculture of the Carpathian Region of the National Academy of Sciences, Palenychak Oleksandra , Savka Mykola , Nakonechnyi Denys
Published: April 2024

In the conditions of the European integration processes and intensifying competition, the improvement of the management of ecologically oriented development of enterprises in the agrarian sector acquires special relevance. At the regional level, the rationale for the competitive development of ecologically oriented entrepreneurship in the agricultural sector involves an analytical assessment of organizational, institutional and economic prerequisites and factors. According to the calculations, in the Carpathian region of Ukraine there is a significant reserve for meeting the needs of middle-class consumers for certain types of organic products. In this regard, it is advisable to focus attention on the implementation of regional programs for the development of the agro-industrial complex. A conceptual scheme of the institutional and economic mechanism of the formation of the competitiveness of ecologically oriented entrepreneurship in the agrarian sector of the region is proposed
The influence of early spring times of sowing chamomile seeds on the field appearance and survival of plants in the conditions of the Right-Bank Forest-Steppe of Ukraine
Authors:   Institution of higher education ", Padalko Tetiana ,   Podilskyi State University"
Published: April 2024

An important place in the effective technology of growing medicinal chamomile (Matricaria recutita L.) is occupied by the early spring sowing period. Therefore, they provide a dense emergence of seeds, as evidenced by many conducted scientific studies in the field of plant breeding. The article presents the results of experimental research on the effect of early spring sowing dates of medicinal chamomile on field seed germination and plant survival. It was established that medicinal chamomile plants depended on weather and climatic conditions, sufficient amount of moisture in the soil, soil crust, which as a result led to variation in the passage of growth and development phases, and therefore, a question arose in the study of agrotechnical techniques aimed at the productivity of medicinal raw materials. The cultivation of tetraploid of medicinal chamomile variety Perlyna Lisostepu and Zloty Lan in the conditions of the Right-Bank Forest-Steppe of Ukraine during the period of research (2018-2023) in the early spring sowing period was studied. It was established that the investigated varieties of medicinal chamomile had the highest field germination of seeds due to the content of productive moisture. The highest field seed germination rates of 74.16% were recorded during the early spring (15-18.04) sowing period of the Perlyna Lisostepu variety, and the Zloty Lan variety was 72.68%, respectively. According to six-year research data, the highest field seed germination of 68.00% on the control variant (1-3.04) according to the sowing dates was noted in the Perlyna Lisostepu variety, and the lowest 67.00% – in the Zloty Lan variety. The maximum rate of plant survival at the end of the growing season was 88.96%, which was obtained in the variant of the early spring (15-18.04) sowing period of the Perlyna Lisostepu variety, the minimum rate was 69.15% in the control (1-3.04) of the Zloty Lan variety. The germination rate on average over six years exceeded the control by 6.14%, and the survival of chamomile plants on average over the years of research exceeded the control option by 1.5%. The difference in factors was insignificant (2-3%)
Metabolic and productive effects of improved PVMS composition in young sheep feeding rations
Authors:   Institute of Agriculture of the Carpathian Region of NAAS, Vovk Stakh , Sedilo Hryhorii , Petryshyn Myron , Martsynovskyi Vitalii ,   Rivne State University of Humanities
Published: April 2024

The article presents the results of the study of productive and metabolic effect of the use of a protein-vitamin-mineral supplement (PVMS), an improved formulation, as part of the feeding rations of young repair ewes of the Ukrainian mountain-Carpathian breed in the conditions of the natural-climatic zone of the Carpathian foothills, by introducing into their composition local highly nutritious feed components. The research was carried out during a two month period (February – March) in the conditions of the Radvan-Nova farm (Myloshevychi village, Pustomytivskyi district, Lviv region) on young ewes of the above breed in the winter-spring stall period. For this purpose, three groups of 12-month-old young ewes of 10 heads in each group (control and two experimental) were formed by the method of analogues, which were kept separately with the provision of proper care and level of feeding. The feeding ration consisted of meadow grass-herbaceous hay (unlimited), oat-pea straw (unlimited) and compound feed. The calves of the control group received 0.4 kg of standard compound feed according to the recipe of the ITSR named after M. F. Ivanov "Askania-Nova", the young ewes of the first experimental group – the same amount of experimental compound feed, the young ewes of the second experimental group – 0.3 kg of a mixture of whole grains of oats, barley, corn and 0.1 kg of experimental PVMS. The conducted studies established that, in the conditions of the indicated climatic zone, feeding of 12-14-month-old young ewes with the rations of compound feed and PVMS including local feed ingredients in their composition, compared to standard analogues, provides an increase in indicators of weight and linear growth of animals, a decrease in monetary expenditure on increases in live weight, improves biochemical indicators of metabolism in the blood. It is also shown that the use of compound feed and PVMS of an improved recipe compared to standard feed, when growing repair young ewes of the Ukrainian mountain-Carpathian breed aged 12–14 months in the winter-stall period makes it possible to reduce monetary costs for obtaining 1 t of growth gain by 10–13%
25th anniversary of the meat breeding industry of Вukovyna!
Authors:   Bukovyna State Agricultural Research Station, Kalynka Andrii , Lesyk Oksana , Stadnytska Olha ,   Institute of Agriculture of the Carpathian Region of the National Academy of Sciences, Tomash Leonid
Published: April 2024

The article presents the results of a retrospective analysis of the 25th anniversary of the establishment of the meat cattle industry in the Carpathian region of Bukovyna. It is shown that domestic herds of a new population of the Bukovyna zonal type of hornless Simmental beef cattle have been formed, which are characterized by the following selection and production indicators: live weight of cows 550–650 kg, milk yield for 210 days 215–235 kg, intensity of growth of young animals on suckling in summer 950–1500 g/day, daily gains for the entire growing period 900–950 g, carcass weight at the age of 18–24 months 265–275 kg, slaughter yield 60.1–61.2%, reduction in the cost of maintenance – 8–12%, profitability of 17–21% with an economic effect of UAH 950 per year without state support for obtaining cheap beef in the Carpathian zone. According to the research results, it was established that in the past the following bulls-progenitors were widely used: Forest 0899, Ivor 1001 of line Achilles 369; Micron 3981 and Major 1351 of line Abricott 58311; Apollon 1843, Maskit 1822, Svitiaz 1865, Anthracyt 1868, Exterier 4865, Kaban 1856 of line Signal 120; Khmuryi 9967 of line Zelott 016040491 and others, which ensured obtaining average daily gains of 950–1150 g at feed costs of 7.1–7.5 feed units for the entire growing cycle in the conditions of different climatic zones of the Carpathian region
Osteochondroma of the distal humerus: A rare location
Authors: Shinde Mahesh Bharatrao , Patel Mihir Ramesh , Gowda HK Karthik , Turukmane Vijay D , Sharma Atharva R
Published: April 2024

Osteochondroma of the medial condyle of the humerus is rare; hence, diagnosis can be challenging as it may be confused with other causes of swelling around the elbow joint. This can lead to compression of neurovascular structure. We present a case of left medial condyle humerus osteochondroma with ulnar nerve involvement and conduct a literature review of this rare condition. A 25-year-old male patient presented with swelling around the left elbow joint for 1 year and tingling and numbness along ulnar nerve distribution for the last 3 months. He underwent an X-ray, magnetic resonance imaging, electromyography, and nerve conduction velocity that confirmed the diagnosis of an osteochondroma with ulnar nerve involvement. An excisional biopsy was subsequently done. In conclusion, the case is an atypical location of osteochondroma. The history, clinical presentation, diagnostic imaging, and management outlined may help in the early identification and management of this rare but complicated condition.
Psikolojik Sağlamlığın İyi Oluş, Öz-Yeterlik, Sosyal Destek ve Demografik Değişkenler Tarafından Yordanması
Authors: Şencan Serra , Yılmaz Bingöl Tuğba
Published: April 2024

Bu araştırmada psikolojik sağlamlığın psikolojik iyi oluş, öz yeterlik, sosyal destek ve demografik değişkenler tarafından yordanıp yordanmadığını incelemek amaçlanmıştır. Araştırmada nicel araştırma yöntemlerinden ilişkisel tarama yöntemi kullanılmıştır. Araştırmada yer alan çalışma grubu 2022-2023 eğitim öğretim yılında İstanbul ilinde yaşayan 224 üniversite öğrencisidir. Katılımcıların %73,2’si (n=164) kadın, %26,8’i (n=60) erkektir. Veriler, kolay örnekleme yöntemiyle ve Google form aracılığıyla toplanmıştır. Araştırmada ölçme aracı olarak; demografik bilgi formu, Psikolojik İyi Oluş Ölçeği, Genel Öz Yeterlik Ölçeği, Çok Boyutlu Algılanan Sosyal Destek Ölçeği, Kısa Psikolojik Sağlamlık Ölçeği kullanılmıştır. Yapılan regresyon analizi sonucunda değişkenlerin psikolojik sağlamlığın %38’ini açıkladığı görülmüştür. Regresyon katsayılarının anlamlılığına ilişkin t-testi yapıldığında psikolojik iyi oluş, öz yeterlik ve cinsiyetin psikolojik sağlamlık üzerinde anlamlı yordayıcılar olduğu sonucuna varılmıştır. Sosyal destek, yaş, kardeş sayısı, anne eğitim düzeyi, baba eğitim düzeyi, ikametgâh, ebeveyn tutumu değişkenleri anlamlı bir etkiye sahip değildir.
ТРАНСФОРМАЦІЯ СПОРТИВНОГО ПРОСТОРУ: ВПЛИВ ВІЙСЬКОВИХ ПОДІЙ В УКРАЇНІ НА МІГРАЦІЮ СПОРТСМЕНІВ
Authors: Городня Т. А. , Окопний А. М. , Городня М. О.
Published: April 2024

Проведено аналіз критичної ситуації в спортивному середовищі через військову агресію сусідньої держави. Вивчено зміни в спортивному житті України. Обґрунтовано необхідність впровадження правильного і чіткого вектора повоєнної трансформації спортивного простору щодо повернення спортсменів в Україну. Досліджено умови сучасності, які роблять питання міграції українських спортсменів вкрай актуальними. Проаналізовано наукові роботи стосовно дослідження міжнародних міграційних процесів та створення цілісної науки “міграціологія”, а також проблеми міжнародної трудової міграції низки вітчизняних та зарубіжних вчених. Показано первинні проблеми, які були на самому початку вторгнення, стосовно спортивного життя українських спортсменів, їх навчально-тренувальних зборів і змагань. Наведено залежність фізкультурно-оздоровчої діяльності, розвитку резервного спорту та спорту вищих досягнень від фінансових можливостей місцевих органів влади. Розкрито поняття вимушеної міграції саме спортсменів у контексті збройної агресії. Проаналізовано витік і неповернення низки спортсменів, а також через це вимушену перекомплектацію національних збірних України. Розкрито можливості інтегрування спортсменів у навчальне і спортивне суспільство приймаючих сторін інших держав. Наведено ключові аспекти, які визначають динаміку процесів глобалізації у сфері спорту вищих досягнень. Представлено спрощену схему вимушеної міграції спортсменів під впливом військових подій у контексті трансформації спортивного простору. Досліджено проблему відношення спортивних федерацій до виїжджаючих спортсменів під час військових подій. Описано необхідну системну підтримку спортсменів через вимушену міграцію від керівництва спортивних федерацій та держави. Запропоновано низку ракурсів повоєнної трансформації спортивного простору щодо повернення спортсменів в Україну з інших приймаючих по спортивним напрямкам держав. Представлено ключові етапи та пропозиції, додаткові аспекти, які можна включити в повоєнну трансформацію спортивного простору. Здійснено прогноз додаткових пропозицій та бачень щодо вирішення проблеми міграції спортсменів в умовах війни.
Kinetic Parameters of Synthesis of a Fullerene Derivative Containing Diterpene Fragment
Authors:   Ufa University of Science and Technology, Sattarova А. F. ,   Institute of Organic Chemistry, Ufa Scientific Center RAS, Gordeev D. N. ,   Ufa University of Science and Technology, Ubaizoda S. N. ,   Ufa University of Science and Technology, Sahautdinov I. М. ,   Institute of Organic Chemistry, Ufa Scientific Center RAS, Ovchinnikov М. Yu. ,   Institute of Organic Chemistry, Ufa Scientific Center RAS, Biglova Yu. N. ,   Ufa University of Science and Technology, Mustafin I. А. ,   Ufa State Petroleum Technological University, Akhmetov А. F. ,   Ufa State Petroleum Technological University
Published: April 2024

The article presents the results of a kinetic study of the synthesis of a new fullerene derivative containing a diterpene fragment, obtained using the HPLC method and subsequent mathematical modeling. The kinetic and activation parameters of fullerene cyclopropanation by the Bingel method were determined, and the reaction mechanism was proposed. Optimal synthesis conditions were found: it is preferable to use a small excess of a chlorine-containing cyclopropanation agent and carry outthe reaction at room temperature.
Investigation of the Possibility of Obtaining a Lignosulfonate Reagent Based on Complex Compounds to Regulate the Parameters of the Drilling Mud
Authors:   Ufa State Petroleum Technical University, Kulyashova I. N. , Badikova A. D. ,   Ufa State Petroleum Technical University, Voloshin A.I ,   LLC "RN-BashNIPIneft", Ufa,   Institute of Chemistry, Ufa Scientific Center RAS, Sahibgareev S.R. . ,   Ufa State Petroleum Technical University
Published: April 2024

Investigation of the possibility of obtaining a reagent for regulating the parameters of drilling mud based on complex compounds by introducing complex-forming Fe (II) cations into the composition of sodium lignosulfonate, followed by additional modification with phosphonic compounds and obtaining a polyelectrolyte complex based on anionic polyelectrolyte-sodium lignosulfonate and modified cationic starch. The presence of functional groups of the studied sodium lignosulfonate capable of complexation was established by IR spectrometry. The determination of the optimal ratios of the initial components for the production of complex compounds based on lignosulfonate, iron sulfate and phosphonic compounds was carried out.Studies of the surface activityof experimental samples were carried out by the stalagmometric method (the method of counting drops). In order to study changes in the structure of a macromolecule of sodium lignosulfonate and a polyelectrolyte complex based on sodium lignosulfonateand cationic starch, the particle size distribution method was investigated. Obtaining a stable polyelectrolyte complex, by selecting the molar ratios of anionic and cationic components, consisted in measuring the dependence of the impedance of an electrochemical cell on the frequency of alternating current. The possibility of using the obtained lignosulfonate reagent based on complex compounds as a reagent for regulating the parameters of the drilling fluid at temperatures from 20 to 160-180°C.
Studies of Surface and Adsorption Activity of Modified Lignosulfonate Reagent for Regulation of Drilling Mud Parameters
Authors:   Ufa State Petroleum Technological University, Kulyashova I. N. , Badikova A. D. ,   Ufa State Petroleum Technological University, Muzafarova А. R. ,   Ufa State Petroleum Technological University, Sahibgareev S.R. ,   Ufa State Petroleum Technological University
Published: April 2024

The possibility of obtaining a modified lignosulfonate reagent based on acrylic and lignosulfonate components is considered. To study the effect of electrolytes on the surface activity of a complex reagent based on acrylic and lignosulfonate components, the surface tension of aqueous solutions of inorganic salts of NaCl and CaCl2 of different concentrations was determinedwith the introduction of 0.1 to 2% of the reagent. The assessment of adsorption activity was carried out on the basis of constructingan isotherm of surface tension at the liquid-liquid interface under static conditions in time at a constant concentrationof the reagent. The possibility of a modified lignosulfonate reagent to effectively reduce the conditional viscosity of clay drilling mud in the temperature range from 20 to 180°C has been established.
The Development of a Digital Twin of the Extruder for Low-Density Polyethylene Filament Production
Authors:   Ufa State Petroleum Technological University, Gumerov I. I. , Ivlev A. K. ,   Ufa State Petroleum Technological University, Kichatov K. G. ,   Ufa State Petroleum Technological University, Prosochkina T. R. ,   Ufa State Petroleum Technological University
Published: April 2024

On the basis of experimentally determined characteristics of low-density polyethylene, geometric dimensions of extruder parts and using COMSOL MULTIPHYSICS software, a digital model of the apparatus was created and hydrodynamic calculationof the polymer melt flow velocity from the extruder nozzle was performed. The agreement of the experimentally measured polymer melt flow velocity with the one calculated using the model is within the acceptable tolerance. This indicates the adequacyof the digital twin model, which can be used to predict the viscosity properties of composite materials based on low-density polyethylene and process conditions of their production by extruder blending.
Problems and Methods of Decision Making Forfuels and Lubricants Use in Equipment
Authors:   The 25th State Research Institute of Chemmotology, Ministry of Defense of the Russian Federation, Pimenov Yu. M. , Ulit’ko A. V. ,   The 25th State Research Institute of Chemmotology, Ministry of Defense of the Russian Federation
Published: April 2024

Applied problems that restrain the enhancing of decision making objectiveness of fuels and lubricants use in equipment are shortly characterized. Several possibilities as to the theory of decision making application for the decision making of fuels and lubricants use in equipment are analyzed. Two methods are introduced and explained to make rational decisions based on integral evaluation criterions as well as on quantitative estimates of properties indicators of fuels and lubricants propensity for transformationsin equipment. In addition some simple illustrations of implementation of new methods with regards to diesel fuels and hydraulic fluids are provided.