bluuebunny/crossref_metadata_2025 huggingface dataset:
CLINICAL AND PROGNOSTIC CHARACTERISTICS OF ORGAN FAILURE PATTERNS IN ACUTE PANCREATITIS
Authors: Levytskyi H.O. , Sheiko V.D.
Published: December 2024

Intoroduction. Acute pancreatitis remains one of the most challenging diseases in abdominal surgery, particularly due to the high incidence of organ failure, occurring in 15-20% of patients and associated with mortality rates up to 42% during the first week of hospitalization. Early identification of patients at high risk for organ failure development is of particular importance. It, in turn, is a key factor determining the severity of the course and prognosis of the disease, developing in 15-20% of patients with acute pancreatitis. At the same time, persistent organ failure is associated with mortality of up to 42% during the first week of hospitalization. There are several scales for assessing the severity of acute pancreatitis, including: Acute Physiologic Assessment and Chronic Health Evaluation II, Bedside Index of Severity in Acute Pancreatitis and the modified Marshall scale, but none of them demonstrates accuracy in predicting the development of organ failure, and the maximum sensitivity reaches only 75%.
The objective of this study was to identify and characterize the main patterns of organ failure in acute pancreatitis based on comprehensive analysis of clinical indicators, laboratory parameters, and temporal disease characteristics.
Subjects and methods. This retrospective study included 82 patients (2014-2019), stratified into groups with organ failure (n=41) and without it (n=41). The assessment protocol included clinical parameters, laboratory findings, and disease progression dynamics. Cluster analysis was used to determine organ failure patterns.
Results. Three main patterns were identified: “early respiratory” (37.5% of cases), “late progressive” (57.5%), and “multisystem” (5.0%), each differing in onset timing, organ system involvement, and clinical outcomes. The "multisystem" pattern exhibited the most unfavorable profile, with the longest hospitalization duration (median 68.0 days) and highest mortality.
The study identified key prognostic markers and developed a risk stratification system, enabling optimized monitoring and treatment strategies based on the organ failure pattern.
ВПЛИВ РЕМОНТНОЇ ПОВЕРХНІ НА МІЦНІСТЬ БЕТОННИХ КОНТАКТНИХ ШВІВ
Authors: Мазурак А. , Гораль В. , Мазурак Т. , Цап О.
Published: December 2024

Визначено, що будівлі та споруди після тривалого використання бетону і залізобетону потребують ремонту, відновлення та підсилення. Це зумовлено багатьма чинниками: дефекти матеріалів, пошкодження при експлуатації, помилки під час проєктування тощо.
Зазначено, що міцність зчеплення старого та нового бетону чи торкретбетону при влаштуванні ремонтних швів буває різною залежно від низки чинників: старого та нового бетонів; характеру підготовки поверхонь; способу вкладання та умов тверднення.
Зауважено, що згідно з досвідом виконання ремонтних робіт і підсилення залізобетонних конструкцій, технологія торкрету ефективна при відновленні чи ремонті цементно-бетонних покриттів. Технологія торкретування дає змогу механізувати всі процеси: від підготовки поверхні до нанесення щільних шарів торкрету, забезпечуючи зчеплення шарів бетону. Досліджено чинники, які впливають на роботу контактного шва, матриці шару та ремонтної поверхні. Вивчаючи сумісну роботу швів, підготовлено 72 бетонні взірці з чотирма варіантами поверхні: гладка – рівна поверхня, гладка фрезерована – фрезерування виконане по рівній поверхні; шорстка – на бетонну поверхню нанесено насічку; шорстка фрезерована – після насічки поверхню фрезерували.
Експериментально оцінено міцність зчеплення бетону і торкретбетону, із забезпеченням підготовки поверхні та встановленням металевих обойм на неї. Внутрішній простір обойм заповнюють бетоном або наносять шар торкретбетону.
Після належної витримки в нормальних умовах за 28–32 доби зразки піддаються дослідженню, металеву обойму відривали від поверхні бетону. Експериментальні дослідження показали, що фрезерування бетонних зразків по шорсткій чи гладкій поверхні не збільшує зчеплення із торкретбетоном.
Formulas for determining the critical buckling stress of I-shaped members under pure bending
Authors: Tu Quoc Chiem Dang , Cuong Bui Hung , Duc Han Ngoc
Published: December 2024

Steel structures are widely used in construction, and the stability conditions for these structures are of greater concern due to their long and slender characteristics. When a plate element is subjected to axial compression, bending, shear, or a combination of these forces in its plane, the plate may buckle locally before the memberas a whole becomes unstable or before the yield stress of the material is reached. This local buckling behaviorcauses the plates in the cross-section of the steel member to interact with each other. Therefore, it is necessary to consider this interaction when calculating or checking for stability conditions. In this research, the proposed formulas determine the buckling coefficient as well as the local critical stress for I-shaped steel beams, accounting for the flange-web interaction when the flange-thickness to web-thickness ratio changes. Additionally, the buckling analysis results indicate that local buckling stress does not depend on the length-to-height ratio but is impacted by the height-to-width and thickness-to-width ratios. Comparisons between the proposed formulas and numerical results show that the suggested formulas have high reliability when the coefficient of variation is small and the coefficient of determination is very high.
Dynamic analysis of carbon nanotube-reinforced composite plates using reduced order isogeometric model
Authors: Hai Luong Van , Lieu Qui X.
Published: December 2024

In this work, a reduced order isogeometric model is proposed to analyze the dynamic behavior of carbon nanotube-reinforced composite plates. In which, the mechanical properties of the material are functionallygraded through the plate thickness employing four distributions of carbon nanotubes. A third shear deformation theory is employed to represent the displacement along with the plate thickness, whilst a non-uniform rational B-splines surface is utilized to approximate the displacement in the plate plane. The dynamic responses at important degrees of freedom are resolved by the Newmark method instead of dealing with all degrees of freedom as those of the full model. Accordingly, a reduced order model based on the second-order Neumann series expansion is utilized to build the isogeometric analysis. Several examples are tested to illustrate the ability of the suggested paradigm. Obtained outcomes are compared with those of other works and full model to prove the reliability of the reduced Isogeometric analysis.
Tingkat Kecemasan Matematika Siswa SMP pada Pembelajaran Materi Prisma
Authors: Syahbana Ali , Rizta Amrina , Suryati Suryati , Kusumawati Nyimas Inda
Published: December 2024

Penelitian ini menggambarkan kecemasan matematika siswa SMP ketika mempelajari materi prisma. Penelitian ini merupakan studi deskriptif kuantitatif yang dilakukan di tiga sekolah: SMP Negeri 31 Palembang, SMP Muhammadiyah 3 Palembang, dan SMP Thawalib Sriwijaya Palembang. Sampel terdiri dari 109 siswa dari kelas terpilih di ketiga sekolah tersebut. Penelitian berlangsung pada Februari 2024 hingga Juni 2024. Data diperoleh melalui pengisian angket kecemasan matematika oleh siswa dari ketiga SMP tersebut. Data hasil dianalisis secara deskriptif kuantitatif. Angketnya berisi 30 butir pernyataan yang menggambarkan setiap indikator kecemasan matematika siswa pada pembelajaran materi prisma. Hasil penelitian menunjukkan kecemasan matematika 109 siswa SMP dalam mempelajari materi prisma termasuk dalam kategori sedang dan mendekati tinggi. Level sekolah tidak terlalu berpengaruh terhadap perbedaan tingkat kecemasan matematika siswa. Kecemasan matematika untuk kelompok siswa laki-laki termasuk kategori sedang, dan kelompok siswa perempuan termasuk kategori tinggi. Kecemasan matematika 109 siswa pada materi prisma untuk indikator kognitif (berpikir) tergolong sedang, untuk indikator afektif (sikap) tergolong tinggi, dan untuk indikator fisiologis (reaksi fisik) tergolong tinggi. Kecemasan matematika siswa laki-laki dan perempuan pada materi prisma jika ditinjau dari indikatornya mempunyai kecenderungan yang sama. Penelitian ini mengungkap bahwa sebagian besar siswa cenderung bersikap cemas terhadap pembelajaran materi prisma, meskipun secara aspek kognitif mereka sebenarnya masih mampu mengikutinya.
Ionospheric features of dayside polar cusp precipitation under the northward IMF
Authors: Vorobjev V. G. , Yagodkina O. I. , Antonova E. E.
Published: December 2024

The geophysical processes in the dayside polar cusp on December 22, 2003 under the northern orientation of the interplanetary magnetic field (IMF), relatively high speed and low density of the solar wind by using the ground-based optical observations on Spitsbergen and DMSP F16 spacecraft observations were examined. A comparison of spacecraft and ground-based observations shows that soft electron precipitation in the cusp region determine the region of the auroral luminosity in the (OI) 630.0 nm emission. The peculiarity of the event under consideration is the observation of a bright rayed auroral arc bordering the dayside cusp from its polar edge. The results of observations of the low-altitude DMSP F16 spacecraft during its pass over the rayed arc were analyzed. Explanations of the observed phenomena are proposed based on the analysis of changes in the spectra of precipitating electrons and the formation of an electron beam by a field-aligned electric field.
Study of sudden magnetic storm commencement from observations with second time resolution
Authors: Zagainova Iu. S. , Gromov S. V. , Gromova L. I. , Fainshtein V. G.
Published: December 2024

The article presents the results of a studying detection of the sudden commencement (SC) and main impulse (MI) of a magnetic storm as a function of the geographic coordinates of magnetic observatories and Universal Time, using modern data with second time resolution. The analysis was carried out for two events in which an interplanetary shock wave impacting the magnetosphere was associated with interplanetary coronal mass ejections (CMEs) with sources in different hemispheres of the Sun. The authors propose an approach to determine the time points of SC and MI detection. It is concluded that the SC and MI detection times may differ by several seconds to more than a minute at magnetic observatories located at different geographic latitudes and longitudes. For the studied events, the graphs of SC and MI detection as functions of the geographic coordinates of magnetic observatories and Universal Time revealed trends according to which, on average, the higher station the latitude, the later SC and MI are detected at the station.
Spatial Structure of Plasma Density Perturbations Excited at Altitudes of the Upper and Outer Ionosphere During F2-Layer Heating by Powerful HF Radio Waves
Authors: Frolov V. L. , Andreeva E. S. , Padokhin A. M.
Published: December 2024

The results of measurements of the spatial structure of variations in the electron concentration excited at altitudes of the Earth’s upper and outer ionosphere by modification of the F2-layer of the mid-latitude ionosphere by powerful HF radio waves of O-polarization radiated by the SURA heating facility are analyzed. The results were obtained by the method of low-orbit satellite radio tomography. The characteristics of a cavity with a reduced plasma concentration formed at altitudes near the height of reflection of a powerful radio wave, ducts with an increased plasma concentration formed at altitudes of the external ionosphere due to the displacement of plasma from the region of its strong heating along the geomagnetic field, and various wave disturbances HF-induced at ionospheric altitudes are considered. In addition, the properties of detected plasma density disturbances of a special nature, revealed in a vertical column above the SURA facility, were also studied. The sizes of studied irregularities are from several tens to several hundred kilometers, and the area of their registration extends far beyond the region of resonant interaction of a powerful O-polarized radio wave with the ionospheric plasma near the height of its reflection, where the most intense artificial ionospheric turbulence is excited.
Influence of solar activity variations on the day-to-day NmE variability during geomagnetically quiet conditions according to the ground-based Dourbes ionosonde data
Authors: Pavlov A. V. , Pavlova N. M.
Published: December 2024

A study of day-to-day variations in the statistical characteristics of the ionospheric E layer electron number density NmE for each month in the year under geomagnetically quiet conditions at low and middle solar activity was carried out according to the hourly ground-based Dourbes ionosonde measurements of the ionospheric E layer critical frequency during the time periods from 1957 to 2023. The NmE statistical parameters under calculations are the mathematical expectation NmEE, the most probable NmEMP, the arithmetical mean monthly median NmEMED, the standard deviations sE, sMP, sMED, and the variation coefficients CVE, CVMP, and CVMED of NmE relative to NmEE, NmEMP, and NmEMED, respectively. It was shown that the value of NmEE provides the best description of a set of observations of NmE by one parameter due to the lower day-to-day variability of NmE compared to NmEMP or NmEMED. It was proven for the first time that the transition from low to middle solar activity leads to significant changes in the day-to-day variability of NmE with the longest periods of increases and decreases in the studied variability in March and December, respectively.
Spectral properties of polymer composites doped with boron difluoride β-ketoiminates
Authors: Bodyk R. E. , Khrebtov A. A. , Tretyakova G. O. , Fedorenko E. V. , Mirochnik A. G.
Published: December 2024

Polymeric luminescent compositions based on polycarbonate and polystyrene doped with β-ketoiminates of boron difluoride were obtained. The luminescent properties of 12 dyes with different substituents were investigated. The influence of the concentration of boron difluoride βketoiminates on the spectral properties of the samples was studied. It was found that the investigated dyes are characterized by monomeric luminescence even at tenfold increase of luminophore concentration (0.05–0.5%). It was found that compositions containing the dyes 3-amino-1-phenyl-2-buten-1-oneate of boron difluoride (1a) and 3-amino-1-phenyl-2-buten-1-oneate of boron difluoride (2a) exhibit exciplex luminescence in polystyrene.
Role of molecular nitrogen in the radiolysis of the primary coolant of a water-water energy reactor
Authors: Grachev V. A. , Bystrova O. S. , Sazonov A. B.
Published: December 2024

The results of modeling of radiation-chemical transformations in the coolant of the VVER primary circuit are presented. It is shown that under conditions of intensive irradiation molecular nitrogen dissolved in the coolant exhibits chemical activity. The reaction of N2 molecule with excited hydroxyl initiates the formation of ammonia and nitrous acid. Further decomposition of ammonia yields only oxidized forms of nitrogen, with N2 acting as an intermediate product. Maintenance of hydrogen and oxygen concentrations within the norms at ammonia water-chemical regime (WCR) appears to be possible only at constant dosing of NH3 and degassing of the coolant. On the contrary, in the case of WCR with dosing (at the initial moment) of H2 in the absence of perturbations the steady-state regime is quickly established, satisfying the requirements of the WCR norms for VVER. The difference between the two WCRs is due to the presence of nitrogen in the NH3 molecule and its transformations as an element, regardless of the initial chemical form.
On the ionization energy of the atomic gold ion Au2+
Authors: Boltnev R. E. , Karabulin A. V. , Krushinskaya I. N. , Pelmenev A. A. , Matyushenko V. I.
Published: December 2024

Analysis of the luminescence spectra of the plasma formed by laser ablation of a gold target immersed in superfluid helium at a laser power density below the breakdown threshold of liquid helium shows that the ionization energy of the Au2+ ion should be at least 34 eV.
Cytoplasmic mRNA transport: adaptors of mRNA binding to microtubule motor proteins
Authors: Vdovina Y. A. , Georgieva S. G. , Kopytova D. V.
Published: December 2024

The process of mRNA localization in the cytoplasm involves the directed transport of mRNP particles using the microtubule system. This transport is mediated and regulated by specific factors – adaptors between mRNA molecules and microtubule motor proteins. Adaptors are a key link in the mechanism of mRNA transport, but to date their identity and functioning are mostly unknown. In this review, we examine the features and importance of adaptor proteins in mRNA transport during oogenesis and in neuronal function. This article summarizes recent data on mRNA binding adaptors in the cytoplasm and the mechanisms of their interaction with microtubule motor proteins.
Recombinant VLP vaccines synthesized in plant expression systems: current updates and prospects
Authors: Rozov S. M. , Deineko E. V.
Published: December 2024

The development and creation of a new generation vaccines based on recombinant proteins that assemble into virus-like particles (VLPs), as well as recombinant proteins in the form of nanoparticles are promising directions in modern biotechnology. Due to their large size (20–200 nm) and a multiplicity of viral antigenic determinants on the surface, VLPs can stimulate strong humoral and cellular immune responses. The review considered the main types of VLPs, as well as the features and disadvantages of the main expression systems used for their biosynthesis. The main focus was on plant expression systems that ensure the biosynthesis of a target recombinant protein from a DNA matrix integrated into the nuclear or chloroplast genomes of a plant (stable expression) or from a matrix for temporary production of the target product (transient expression). Various approaches for increasing the yield of VLP-forming recombinant proteins, including fusion with a transit peptide that directed the protein into the chloroplast, were discussed. The possibility of accumulation of recombinant proteins expressed in plants and intended for creation of VLP-vaccines in another type of nanoparticles, protein bodies, using specific signal sequences was also considered.
Development of an in vitro model of dysferlinopathy via crispr/cas-mediated transcriptional activation of the dysf gene
Authors: Yakovlev I. A. , Slesarenko Y. S. , Starostina I. G. , Shaimardanova A. A. , Solovyova V. V. , Bobrovsky P. A. , Grafskaia E. N. , Belikova L. D. , Bardakov S. N. , Rizvanov A. A. , Isaev A. A. , Deev R. V.
Published: December 2024

Scientists need cell models from human tissues to develop methods of gene therapy and genome editing for monogenic diseases. It is preferable to use minimally invasive methods to obtain samples; these tissues can be applied for further screening in order to select the most effective approach to restore the synthesis of the target protein. We used the CRISPR/Cas9-SAM transcriptional activation system, which ensures expression of the DYSF gene in HEK293Т cells, as well as in fibroblasts from patients with dysferlinopathy (c.2779delG (Ala927LeufsX21)). After targeted activation of DYSF, it was possible to detect the main gene products: mRNA and protein (HEK293Т_ТА) and mRNA (fibroblasts). Transcriptionally activated dysferlin-deficient fibroblasts and HEK293 cells can be used to evaluate the in vitro efficacy of gene therapy for dysferlinopathies.
Analysis of G:C>T:A, G:C>A:T and G:C>C:G mutations in the TP53 gene in women with and without breast cancer in the long term period after chronic radiation exposure
Authors: Nikiforov V. S. , Korechenkova А. V. , Akleyev А. V.
Published: December 2024

This paper presents the results of the analysis of mutations such as G:CT:A, G:CA:T and G:CC:G in the TP53 gene in peripheral blood cells in women affected by chronic radiation exposure with breast cancer (24 persons) and without breast cancer (17 persons). 17 different variants representing single nucleotide substitutions were registered. The differences in the frequencies of carriers of the detected variants between the comparison and the main group were not statistically significant. All detected variants were present in the IARC TP53 database and had no clinical significance as “pathogenic.” Despite the absence of statistically significant differences, the question of the effect of chronic low dose rate exposure on the frequency of mutations in the TP53 gene remains open and requires further research involving a greater amount of data.
Effect of water temperature on the size-age structure of the population of Hydrobia acuta Black Sea molluscs and on invasion with Gynaecotyla adunca parthenitae
Authors: Belousova Y. V. , Makarov M. V. , Lyakh A. M.
Published: December 2024

In the present work, the influence of water temperature on the size-age structure and size of the population ofHydrobia acutamolluscs and their invasion with parthenites of the microphallid trematodeGynaecotyla aduncain Kazachya Bay (Black Sea) was studied. A positive correlation between the indicators of invasion extensity and the size, abundance of molluscs and water temperature was revealed. It was found that the seasonal dynamics ofG. aduncaparthenites abundance clearly distinguishes the periods of mass infesction of molluscs, which are graphically displayed by two peaks – in July and November. It was confirmed that the life cycle of the Black Sea molluscsHydrobia acutaproceeds similarly to that of Mediterranean individuals
Tensor nonlinear viscoelastic models by maxwell-type: vibrocreep and ratcheting
Authors: Georgievskii D. V.
Published: December 2024

Some effects of the stress-strain state, such as vibrocreep, creep acceleration and ratcheting, observed and studied in experimental mechanics of a deformable solid, are proposed to be modeled on the basis of constitutive relations implemented in tensor nonlinear viscoelastic Maxwell-type models. The apparatus of isotropic tensor functions depending on two symmetric tensor arguments is involved. Examples of a complex stress state in a tubular specimen are given, when there is a significant disproportionate increase in time of the axial component of strain under the combined action of constant axial and vibrational shear loads compared with the case of the action of only axial load. The concepts of generalized and combined ratcheting are introduced in conditions of a complex stress state.
Analysis of structural safety of structures when accounting processes of progressive destruction
Authors: Mamatov Zh. Y. , Abdykalykov A. A. , Shamshiev N. U.
Published: December 2024

The reasons for the occurrence of failures are considered, the consequence of which can be considered the progressive collapse of structures and the consideration of structural safety in more expanded concepts than when assessing the first and second groups of limit states for low-rise buildings built from local materials.
On proper motions of the flat cosserat type structure
Authors: Brovko G. L. , Kozhukhov V. V. , Martynova E. D.
Published: December 2024

The problem of natural vibrations of a flat strip of anisotropic two-dimensional Cosserat medium under the assumption of small deformations and in the absence of external forces and moments is investigated. It is shown that two natural frequencies correspond to each wave number. The natural forms of oscillations and the relationship between them are found. It is concluded that at oscillations with the lower of the two frequencies the inclusion rotations accompany the longitudinal displacement of the strip, and at oscillations with a higher frequency they prevent it. The obtained results are illustrated on the example of a medium model with specific parameter values. The plots show the dependences of natural frequencies, phase and group velocities on the wave number, and their asymptotic behavior is studied.
Factors of stability of wells in reservoirs of underground gas storage facilities
Authors: Klimov D. M. , Karev V. I. , Kovalenko Yu. F. , Ustinov K. B.
Published: December 2024

Preserving the integrity of wells and preventing sand production processes are among the key problems in the operation of underground gas storage facilities. Previously, the authors have stated that a key role in the processes of destruction and sand production is played by changes in formation pressure in the reservoir as a whole, since it has a decisive influence on the magnitude of the stresses acting in the vicinity of the wells. This thesis differs from the point of view of many researchers who associate these negative processes with a change in the stress state in the bottomhole zone of the formation caused by drawdown/overbalance in wells. The main goal of the article is to study the influence of unequal components of the initial stress state, as well as elastic and strength anisotropy of reservoir rocks on the stability of wells. It is shown that the presence of unequal components of the initial stress state and elastic anisotropy can lead to stress concentrations on the well contour that differ significantly from the isotropic case. It is also shown that in the presence of strength anisotropy, a change in the location of the points of the beginning of well destruction can be observed. The calculations performed have been confirmed by experimental studies carried out on rocks of the Uvyazovsky underground gas storage facility under conditions of true triaxial independent loading.
On the criterion of strength of single-lap plate joints
Authors: Glagolev V. V. , Lutkhov A. I.
Published: December 2024

On the basis of experimental data on the fracture of an adhesive layer mating two plates along a given section and the known analytical solution corresponding to the calculation scheme, variants of the fracture criterion that take into account hydrostatic pressure and invariant components of elastic energy are considered. One- and two-parameter criteria are investigated, in which the products of volume and shape deformation energy per layer thickness form the critical flow of elastic energy density. It is shown that the loosening of a thin adhesive layer under a two-parameter criterion quasilinear with respect to the volume strain energy most accurately describes the critical state.
Motion of a variable body in a time-dependent force field
Authors: Burov A. A. , Nikonov V. I.
Published: December 2024

The problem of translational-rotational motion of a variable body is considered under the assumption that the inertial properties of the body, as well as the external forces acting on it and the moments of forces clearly depend on time. The conditions under which the equations of motion are reduced to classical equations describing the motion of a solid body in a force field independent of time are indicated. There are cases when the equations of motion are reduced to completely integrable ones. The elements of the discussion of the 1920-1930 on the description of the motion of a material point of variable mass in a time-dependent field of attraction are reproduced.
Modeling of sliding contact of a system of asperities and coated viscoelastic half-space
Authors: Stepanov F. I. , Torskaya E. V.
Published: December 2024

Problem of sliding of a periodic system of asperities along the boundary of a viscoelastic half-space with a coating is under consideration. The coating is modeled by a layer with flexural rigidity. The solution is based on reducing the problem to the contact of a limited system of asperities with the action of others being replaced by distributed pressure; the accuracy of such approach is evaluated. The numerical-analytical solution is based on double integral Fourier transforms, the boundary element method and the iterative procedure. The influence of the shape of asperities, sliding velocity, and coating thickness on the deformation component of the friction force and on the effect of mutual influence of asperities was analyzed. To identify the effect of mutual influence, a comparison was made of the results (distribution of contact pressure and friction force) obtained for multiple contacts and for the isolated asperity. For comparison, the results of solving a similar problem for viscoelastic half-space without a coating were obtained and analyzed.
The nye cells and figures for athermic hemitropic, isotropic and ultraisotropic micropolar elastic solids
Authors: Krylova E. Yu. , Murashkin E. V. , Radaev Yu. N.
Published: December 2024

The paper deals with a method of the Nye figures construction for micropolar elastic solids. The method of tensors of the 4th and 3rd ranks representations by means of blocks of two-dimensional matrices and relationships between their elements is widely known in crystallography. Such approach makes it possible to simply determine the number of independent constitutive constants for micropolar elastic solids and guarantee the absence of relationships between them. In frameworks of the present study, the two-dimensional Nye figures for an ultraisotropic micropolar elastic solid were figured out based on the corresponding figures for hemitropic and isotropic micropolar elastic solids. It is shown that the constitutive tensors of ultraisotropic material characterized by only 4 independent constitutive constants: shear modulus of elasticity, Poisson’s ratio, characteristic nano/microlength and another dimensionless constant.
Negative creep of single-crystals nickel-based superalloys
Authors: Epishin A. I. , Lisovenko D. S.
Published: December 2024

The negative creep of single crystals of nickel-based superalloys SR99 and CMSX-4 has been investigated. This phenomenon was observed for both superalloys at temperatures of 980–1000 °C and low or zero loading stresses. It is assumed that the main reason for the negative creep is the formation of a short-range order of atoms in a strongly alloyed crystal lattice of the g-matrix. Additional factors affecting the magnitude and anisotropy of the negative creep strain may be the relaxation of residual stresses: at the microscopic level, misfit stresses between the g-matrix and strengthening g′-precipitates, and at the mesoscopic level, dendritic stresses between the dendrite axes and interdendritic regions.
Postagrogenic Transformation and Assessment of Carbon Stocks of Karelia Unused Forage Lands' Phytocenosis
Authors: Bakhmet O. N. , Evstratova L. P. , Nikolaeva E. V. , Dubina-Chekhovich E. V.
Published: December 2024

On forage lands overgrown with vegetation of low value for agricultural production, the postagrogenic transformation of the grass cover manifested itself in a decrease in the total projective coverage up to 1.7 times (compared with hayfields 94.8–99.0%) and heterogeneity of the species composition. The coefficients of floral similarity of haymaking Jacquard and forage lands with the curtin type of overgrowth averaged 0.45, and with the solid type – 0.39. Grass-cereal or cereal-grass stands were mainly composed of rhizomatous and turf-bearing plant species. The reserves of absolutely dry aboveground mass (4.86 t/ha) and carbon (2.04 t C/ha) of hayfields significantly exceeded (up to 1.5 times) the corresponding indicators of unused forage lands.
Features of blood-sucking miscellaneous flies (Diptera: Simuliidae) biotopic distribution in the Tyumen region as potential vectors of tularemia
Authors: Fedorova O. A.
Published: December 2024

The article presents a comprehensive epidemiological analysis of the family of blood-sucking midges (Diptera: Simuliidae). These insects are known for their role in the transmission of various pathogens to humans and animals, including viruses, bacteria and protozoa. Their distribution, seasonal dynamics and preferred habitats, as well as epidemiological significance in different geographic regions are considered. The study aims to inform and guide public health for the development of more effective strategies for the control and prevention of diseases transmitted by blood-sucking midges. Changes in the state of regional faunas associated with the shift in the boundaries of species ranges can be explained by both anthropogenic transformation of landscapes and climate dynamics. From the list of blood-sucking midges identified by us, inhabiting the territory of the Tyumen region, potential vectors of tularemia pathogens are B maculatus, Sch. рusilla, which is consistent with the literature data.
ОРГАНИЗАЦИЯ ПРОФЕССИОНАЛЬНО-НАПРАВЛЕННОГО ОБУЧЕНИЯ МАТЕМАТИКЕ СТУДЕНТОВ ТЕХНИЧЕСКИХ ВУЗОВ
Authors: Ергалауова З.А. , Абуова А.О.
Published: December 2024

В статье рассматривается вопрос организации профессиональнонаправленного обучения математике студентов технических вузов в Республике Казахстан. Целью исследования является анализ и практическая реализация методической составляющей для повышения уровней готовности будущих специалистов вуза технического профиля к формированию профессиональныхкомпетенций, как залог формирования компетентного специалиста готового осуществлять профессиональную деятельность. В исследовании использованы следующие методы: анализ, сравнение, систематизация, классификация, обобщение и эксперимент, методы математической статистики. Рассмотрено содержание понятия «профессионально-направленное обучение», раскрыты его признаки и особенности, разработана и внедрена методика организации профессионально-направленного обучения математике в контексте профес сиональной подготовки будущих специалистов вуза технического профиля.
В ходе исследования на базе Кызылординского университета имени Коркыт Ата (город Кызылорда) разработан методический инструментарий повышения уровня формирования профессиональных компетенций будущих специалистов вуза технического профиля с помощью профессиональнонаправленного обучения математике, а именно: реализация компонентов и критериев готовности с отобранными методиками их формирования. В исследовании выделены педагогические условия, позитивно влияющие на формирование профессиональных компетенций будущих специалистов вуза технического профиля, в том числе разнообразие форм учебной деятельности. Обобщенные данные результатов исследования позволяют сделать выводы о действенности внедренного методического инструментария для формированиякомпонентов готовности. В процессе исследования установлено, что осуществление активной работы студентов в процессе изучения математики играет немаловажную роль в их учебной деятельности и создает необходимый запас профессиональных компетенций необходимых будущим специалистам в профессиональной деятельности. Использование современных методов организации профессионально направленного обучения будущих специалистов вуза технического профиля требует от специалистов не только активности и способности к поиску новых решений, но и формированию уменийсамостоятельно ставить и выполнять новые профессиональные и социальные задачи, быть способными к быстрой адаптации и работе в условиях, изменяющиеся, уверенности и ответственности.
USE OF INTERACTIVE TECHNOLOGIES AND OPEN ONLINE RESOURCES IN TEACHING ORGANIC CHEMISTRY TO STUDENTS
Authors: Mendygaliyeva A.Y. , Mukasheva M.M. , Utepkaliyeva G.I.
Published: December 2024

The article describes the use of interactive technologies in the course of online teaching of organic chemistry. In the discipline of organic chemistry, information is given about the use of interactive technology, that is, a mobile installation. In addition, in the lesson of organic chemistry, it is studied how effective it is to use a mobile installation, open online educational resources using a QR code, and the result is shown.  Currently, Chemical Education addresses issues related to the identification of new values in order to improve the quality of education, the development of students personal development, as well as learning strategies that stimulate students' interest and commitment to the Natural Sciences. The emphasis is on interactive learning using open online educational resources and interactive technologies that apply the discipline in practice. Therefore, the purpose of students is based on interactive educational characteristics related to information and communication technology and an interesting course of the discipline. The use of mobile devices in organic chemistry increases the speed of learning by students.
Organic chemistry lessons present evidence that the use of open online educational platforms, 3D technologies, including QR codes, is effective for fast loading of digital data and increases the productivity of education. In addition, the use of interactive technologies in organic chemistry is interesting and effective for both students and teachers.
МАШИНАЛЫҚ ОҚЫТУ ӘДІСТЕРІН ҚОЛДАНУ АРҚЫЛЫ БІЛІМ АЛУШЫЛАРДЫҢ ҮЛГЕРІМІН АНЫҚТАУ
Authors: Нахипова В.И. , Сулейменова Л.А. , Адылбекова Э.Т.
Published: December 2024

Жасанды интеллект (ЖИ) технологияларының қарқынды дамуы білім беру саласына айтарлықтай әсер етуде. Оқытудың заманауи  әдістері оқу процесінің кіріс және шығыс деректерінің динамикалық бөлігінеайналды. Білім алушылар туралы деректердің, сондай-ақ білім алушылардың ақпараттық жүйелерінің дерекқорларынан, оқытуды басқару жүйелерінен (LMS) және курстарды бағалаудан алынатын деректердің үнемі өсіп келе жатқан қолжетімділігі бізге педагогикалық инновацияларға терең статистикалықталдау жүргізу мүмкіндігін береді.Зерттеу жұмысы оқу үлгерімін бақылау үшін пайдалануға болатын оқытуды талдау (Learning analytics, LA) және білім беру деректерін өндіру (Educational Data Mining, EDM) тәсілдерін пайдаланудың маңызды аспектілерін қарастырады. Оқуды басқару жүйесіне (LMS) оқыту аналитикасын біріктіру,студенттердің оқу үлгеріміне қатысты мәселелерді болжау және алдын алу арқылы оқу процесінің тиімділігін арттыра алады. Мақалада білім алушылармен оқытушыларды хабардар ететін немесе машиналық оқыту әдістерін қолдана отырып әкімшілік шешімдерді қолдайтын модельдер мен болжамдарды әзірлеуге арналған мәліметтердегі заңдылықтар қарастырылады.Авторлар білім алушылар мен оқытушыларға көмектесетін, сондай-ақ машиналық оқыту әдістерін қолдана отырып әкімшілік шешімдерді қолдайтынболжау модельдерін әзірлеу үшін білім беру деректеріндегі заңдылықтарды зерттейді. Негізгі назар машиналық оқыту әдістерін педагогикалық жәнепсихологиялық теориялармен біріктіруге бағытталған, бұл академиялық саясатты оңтайландыру үшін деректерді жинау, өңдеу және талдау процестерін жақсартуға ықпал етеді. Мақалада машиналық оқытуды білім беру аналитикасының әдіснамалық негізі ретінде қолданудың практикалық мысалдары келтірілген. Әртүрлі машиналық оқыту алгоритмдеріне негізделгенболжамды модельдерді қолдану арқылы деректерді өндіру (EDM) есептерін шешуге бағытталған статистикалық талдау және болжау құралдары ұсынылады.
ҚАЗАҚСТАН КОМПАНИЯЛАРЫ ИНВЕСТИЦИЯЛЫҚ ҚЫЗМЕТІНІҢ ИННОВАЦИЯЛЫҚ ӘЛЕУЕТІНІҢ ЭКОНОМИКАЛЫҚ ТИІМДІЛІГІН БАҒАЛАУ
Authors: Амангельдинова M.K. , Сапарова Б.С. , Шаяхметова Л.М.
Published: December 2024

Бұл мақалада шетелдік инвесторлар Кеңесінің 34-ші пленарлық отырысында Қазақстан Президенті Қасым-Жомарт Тоқаев белгілеген елдің экономиканы жаңғыртуға және инвестициялық ахуалды жақсартуға ұмтылысы тұрғысынан алдыңғы қатарға шығарылатын қазақстандық компаниялардың инвестициялық қызметінің инновациялық әлеуетінің экономикалық тиімділігін бағалау жүзеге асырылады. Зерттеудің мақсаты инвестициялық қызметтің инновациялық әлеуетінің экономикалық тиімділігін бағалау болып табылады. Қойылған мақсаттарға қол жеткізу үшін статистикалық деректерді талдауды, сапалық және сандық талдауды, салыстырмалы талдауды және құжаттарды талдауды қамтитын әдістер кешені пайдаланылды. Зерттеу компаниялардың бәсекеге қабілеттілігін арттыруға және елеулі шетелдік инвестицияларды тартуға қабілетті экономикалық өсудің драйвері ретіндегі инновациялық әлеуеттің маңыздылығына назар аударады. Инновацияларды ынталандырудың және озық тәжірибелерді Қазақстанның экономикалық жағдайларына бейімдеудің халықаралық тәжірибесіне ерекше назар аударылды. Алынған нәтижелер инновациялық жобаларды мемлекеттік қолдауды күшейту, сондай-ақ компаниялардың инновациялық әлеуетін неғұрлым тиімді пайдалану үшін заңнамалық базаны және инвестициялық инфрақұрылымды жетілдіру қажеттігін көрсетеді. Зерттеудің қорытындылары инновациялық белсенділік жаһандық нарықтың сын-қатерлеріне бейімделе алатын тұрақты даму мен экономиканы қалыптастырудың негізгі факторы болып табылатынын көрсетеді. Зерттеудің практикалық маңыздылығы бизнестегі инновацияларды ынталандыратын мемлекеттік стратегияларды әзірлеу үшін алынған деректерді қолдану мүмкіндігі, сондай-ақ ұзақ мерзімді өсу перспективаларына мүдделі инвесторларды тарту болып табылады. Зерттеу нәтижелері инвестициялық қызметтің инновациялық әлеуетінің экономикалық тиімділігін бағалау бүкіл әлем бойынша мемлекет үшін де, жеке бизнес үшін де маңызды екенін көрсетеді. Әр түрлі елдердегі тәсілдер мен әдіснамалар әр түрлі аймақтардың корпоративті деңгейде инновациялық қызметті қалай ынталандыратынын және қолдайтынын анықтайды.
Adaptación de la escala de Machismo Sexual/Sexismo (EMS-Sexismo-12) en una ciudad del Caribe colombiano
Authors: Pastrana Quintana Camilo Andrés , Fortich Pérez David Javier , Neira Salas Jeison David , Ortega Mastrodomenico Eliana Carolina
Published: December 2024

The study aimed to determine the evidence of content validity, construct validity, internal consistency, and the standardization of the sexual machismo/sexism scale (EMS-Sexismo-12) in a Colombian adult population. Participants were 678 people between 18 and 79 years of age (M= 26.32; SD=10.76) (50% women) from the city of Cartagena de Indias. The scale presented a good adaptation to the context, the Hernandez-Nieto CVC inter-judge coherence index = .936, the confirmatory factor analysis showed a unifactorial structure with 10 items that presented adequate adjustment indexes (CFI= .94, PNFI= .72, RMSEA = .04, [.041 - .057]). Good internal consistency reliability, McDonald's Omega of .92 and Ordinal Alpha of .94. The standardization was done by sex due to the differences between scores (U= 40284.00 p< .05). 52.65% of subjects showed a medium or higher level of sexual machismo/sexism.
Relación trabajo-familia en trabajadores de empresas privadas: Una revisión sistemática
Authors: Pezo-Arteaga Erik , Paredes Limo Eduardo Fabrizzio
Published: December 2024

The importance of understanding how work-family affects people's lives has been recognized in light of increasing work demands and family obligations. This review proposed to carry out a systematic search of the recent scientific literature to analyze the work-family relationship in workers of private companies. Following the PRISMA methodology, searches were carried out in the WOS, SCOPUS and SCIELO databases, including academic articles, in Spanish and English. 19 relevant investigations that analyzed the subject of study and that met the determined eligibility criteria were included. A predominance of quantitative, non-experimental and relational studies is observed, in addition, the majority of the samples come from Portugal, established non-probabilistically and of moderate size, a diversity of dimensions is evident, as well as, they were addressed largely from cross-sectional designs. Longitudinal studies with more diverse samples are necessary, particularly for the Latin American context.
Using Reinforcement Sensitivity Theory to Predict COVID-19 Vulnerability: Data from Students in México and the US
Authors: Pulido Marco , Arjona Daniel , Avilés Paola , López Valeria , Martínez Regina , Santoyo Sofía , Vergara Sofía
Published: December 2024

Abstract: The study assessed the capacity of revised Reinforcement Sensitivity Theory to predict COVID-19 vulnerability and outcome. A convenience sample of 1033 undergraduate students from Mexico and the US answered the RST-PQ and a COVID-19 symptom checklist. Data showed that FFFS and BIS are direct and significant predictors of the severity of COVID-19 symptoms; GDP is a significant and inverse predictor. Additionally, both RR and RI significantly differentiate between individuals that present COVID-19 infections, and those that do not. In general, the results only partially coincide with those produced on the issue by r-RST; however, they align well with scientific literature produced outside the framework. Apparently, individuals who score high in trait anxiety related scales of the RST-PQ will present worse COVID-19 infection symptoms. Additionally, individuals who score high in extroversion related scales of the RST-PQ, will have a higher probability of presenting a COVID-19 infection.
Virtual Reality in Medical Education: Prometheus' Gift or Pandora's Box?
Authors: Kara Fatih , Bati Ayşe Hilal , Karaca Ozan , Baran Ayşe Sude , Ergin İskan
Published: December 2024

Virtual reality (VR) is a computer-generated simulation that resembles a real-world environment and allows the user to explore and interact with it. VR increases attention, interest, and motivation in learning, and it can be used anywhere and at any time. Situations that are difficult to simulate with real tools can be easily created by VR technology. VR enables repeatable experiences in a safe learning environment without the risk of harm to the student or patient. However, it can also cause some problems such as digital eye strain and VR sickness. This traditional review defines VR and its associated concepts, highlights the significant stages that VR technology has undergone from past to present, and presents the advantages it offers and the potential risks it brings to medical education. It aims to provide a comprehensive and up-to-date scientific foundation for its appropriate and effective use.
Paradigms of development and trends of reforming school education in Ukraine in the era of independence: monograph
Authors:   Institute of Pedagogy of the National Academy of Educational Sciences of Ukraine, Dichek N , Saukh P ,   Institute of Pedagogy of the National Academy of Educational Sciences of Ukraine, Antonets N ,   Institute of Pedagogy of the National Academy of Educational Sciences of Ukraine, Zagorodnyaya A ,   Institute of Pedagogy of the National Academy of Educational Sciences of Ukraine, Yevtuch M ,   Institute of Pedagogy of the National Academy of Educational Sciences of Ukraine, Shevchenko S ,   Institute of Pedagogy of the National Academy of Educational Sciences of Ukraine, Boychenko M ,   Institute of Pedagogy of the National Academy of Educational Sciences of Ukraine
Published: December 2024

The monograph reveals the processes of individualization in school education of Ukraine, starting from the first years of independence, outlines the ways of evolution of mechanisms of humanization and
optimization of school education (1991-2010). The educational policy of the state in the field of
introduction of personality-oriented education is covered. The contribution of Ukrainian psychologists to
the deployment of an individual approach to education in primary and secondary educational institutions;
the formation and development of the psychological service at school as a tool of the personal process
education and upbringing of children; a shift in the structure and activities of primary and secondary educational institutions, in the education of national minorities, in the textbook is revealed.
The materials of the monograph will be useful in lectures and methodological work in universities