bluuebunny/crossref_metadata_2025 huggingface dataset:
Identifying some regularities of the fatigue behavior of the reinforced carbon-fiber with Al2O3 nanoparticles composite structure of the prosthesis foot
Authors: Shomran Ali Talib , Faisal Batool Mardan , Hussein Emad Kamil , Santos Thiago , Fatima Kies
Published: March 2023

In this research Carbon-Fiber with AL2O3 Nanoparticles Composite Structure of the Prosthesis foot has been examined and analysed numerically explain the fatigue behaviour of the prosthesis. Nanoparticles made of AL2O3 were incorporated into the production process of the composite structure of the prosthesis foot in the appropriate manner. The life forecast, the damage indicator, and the Biaxiliray indexation were the three primary considerations that went into the process of studying the composite construction of the prosthesis foot. The life prediction was the most important factor. Experiments on the phenomena of fatigue have been carried out with the stress being entirely reversed as the variable in order to ensure that the findings are in keeping with the theory that was proposed by GoodMan. In order to develop an estimate for these characteristics, the dynamic load that was applied, which was 1000 N, was utilised. It used the dynamic load that was applied in order to produce an estimate for these characteristics so that we could better understand them. The results of the computational research showed that the life prediction could be increased to 106 cycles by applying a primary force of 1000 N. This was shown by the findings of the studyThis was demonstrated by the findings. While the same load application was being carried out, the Biaxiliray indexation attained a value of 0.99. In addition to the research that was done on the damage indicator, the numerical findings demonstrated that the damage can be seen after the initial 1000 cycles of stress have been applied. This was demonstrated both by the research that was done on the damage indicator as well as by the numerical findings
Improvement of cleaning parameters of pipeline elements based on simulation of movement of solid magnetite particles in electrically conductive liquid
Authors: Rogovyi Andrii , Chernetska-Biletska Nataliia , Miroshnykova Mariia , Baranov Ihor , Polupan Yevhen
Published: March 2023

The unique properties of liquids that can interact with electric and magnetic fields are used in mechanical engineering, technology and medicine. The possibility of the influence of the magnetic field on the solid particles of the liquid in the pipeline allows cleaning of the solid walls of the pipeline, which is the object of the study. Magnetic liquids are solutions of ferromagnets in a liquid, and their physical properties in a magnetic field cause structural transformations in such liquids.
The treatment of electrically conductive liquids in a magnetic field and their use for cleaning water from oil or oil residues are considered. On the basis of numerical modeling, the movement of solid particles of magnetite, which is part of an electrically conductive liquid, was investigated by jointly solving the equations of Reynolds, Maxwell, non-discontinuity and the turbulence model. The physical phenomena of the movement of solid particles of magnetite-based conductive liquid in various elements of the pipeline were determined, which improved the parameters of cleaning liquids contaminated with oil and oil. The magnetic particles of the electrically conductive liquid quite nicely fill the boundaries of the intersection if there is a flow reversal, as it happens in radiators. An increase in the intensity of the magnetic field leads to a change in the velocity profile of the conductive liquid, which prevents magnetite particles from penetrating close to the wall. An increase in the power of the magnetic field makes it possible to detach the contamination from the walls of the pipeline together with the solid particle of magnetite. A 73 % increase in wear in certain sections of the pipeline is due to the effect of the centrifugal force acting on the particle during rotation.
The sudden expansion of the flow makes it difficult for particles to reach the pipe surfaces, which worsens the cleaning conditions. The number of particles on the surface is 82 % less compared to the absence of sudden expansion
Immunohistochemical neuroinflammatory markers in the hippocampus of PTZ-kindled rats under conditions of rapamycin and axitinib treatment
Authors: Poshyvak Olesya , Pinyazhko Oleh , Godlevsky Leonid , Pervak Mykhailo , Yehorenko Olha , Doganyigit Zuleyha , Okan Asli , Akyuz Enes , Hathal Suliman N. A. , Liashenko Artem Volodimirovich
Published: March 2023

The aim of the study is to determine the level of HIF-1α, TNF-α, and NF-kB in the hippocampus of kindled rats treated with rapamycin and axitinib.

Materials and methods. Kindling was produced in 29 rats by administration of three-week pentylenetetrazole (PTZ, 35.0 mg/kg, i.p.). Treatment with rapamycin (0.5 mg/kg, i.p.) and axitinib (2.5 mg/kg, i.p.) was performed for ten days in fully kindled rats. The avidin-biotin-peroxidase method was used for hippocampal slice staining. For negative control, staining was performed using only secondary antibodies.

Results. The HIF-1α expression increased in kindled rats raised by 1.77 times compared to the control (p<0.001). Axitinib treatment resulted in of HIF-1α level of 16.7 % (p<0.05) compared with kindled animals, while combined treatment with rapamycin and axitinib reduced HIF-1α by 33.8 % (p<0.01). In kindled rats, TNF-α expression was 3.74 times greater than in control (p<0.001). Rapamycin treatment reduced TNF-α by 31.0 % (p<0.01). Axitinib treatment caused a reduction of TNF-α by 21.1 % (p<0.05). Combined treatment with rapamycin and axitinib reduced TNF-α by 48.0 % (p<0.001) but still exceeded the TNF-α in control by 1.95 times (p<0.01). NF-kB level in kindled rats exceeded the control by three times (p<0.001). Rapamycin caused a reduction of 19.3 % (p>0.05), while axitinib – by 26.5 % (p<0.05) compared with kindled rats. Combined treatment with rapamycin and axitinib resulted in NF-kB reduction by 56.7 % compared with kindled rats (p<0.001). 

Conclusions. PTZ-kindling resulted in an increase in the immunoreactivity of HIF-1α, TNF-α, and NF-kB in the hippocampus. Combined treatment with rapamycin and axitinib engendered prevention of generalized seizures and normalized the level of HIF-1α and NF-kB with a significant reduction of TNF-α. Effects of treatment favours of synergy action of rapamycin and axitinib
The pharmaceutical market of medicines containing retinoids for the treatment of psoriasis in Ukraine, Poland and Kazakhstan
Authors: Shtrimaitis Oksana , Kukhtenko Oleksandr , Sadovnyk Olga , Kukhtenko Halyna
Published: March 2023

The aim of the work is to analyze the use of medicines containing retinoids for the treatment of psoriasis on the example of Ukraine, Poland and Kazakhstan.
Materials and methods. The object of the study was antipsoriatic drugs, which are used for the treatment of psoriasis of local and systemic action, and are included in the official register of drugs of the studied countries. Regulatory documents of the State Expert Center of the Ministry of Health of Ukraine were involved in the analysis of the use of medicines for the treatment of psoriasis in Ukraine.
The analysis of the availability of the considered medicines on pharmaceutical markets was carried out according to the data of the official websites of the State Register of Medicines (Ukraine), the Register of Medicines of Poland (Republic of Poland), data of the National Center for Expertise of Medicines and Medical Devices of the Republic of Kazakhstan (Republic of Kazakhstan).
The following methods of logical and meaningful formulation of the problem, office marketing research, content analysis of publications in scientific and practically oriented medical and pharmaceutical publications, comparative analysis, tabular and graphic means of visual presentation of the obtained data were used in the work.
The results. According to the results of the obtained data, an assortment of medicinal products containing retinoids of the studied countries, used for the treatment of psoriasis, was determined. The fate of domestic production in the countries was analyzed, the main active components from the group of retinoids used for the treatment of psoriasis in preparations of systemic and local action were updated.
Conclusions. The role of retinoids in the treatment of psoriasis in Ukraine, Poland and Kazakhstan and the need to develop modern domestic medicines containing retinoids for the treatment of psoriasis have been determined
APPLICATION OF TWO-DIMENSIONAL PADÉ-TYPE APPROXIMATIONS FOR IMAGE PROCESSING
Authors: Olevskyi V. I. , Hnatushenko V. V. , Korotenko G. M. , Olevska Yu. B. , Obydennyi Ye. O.
Published: March 2023

Context. The Gibbs phenomenon introduces significant distortions for most popular 2D graphics standards because they use a finite sum of harmonics when image processing by expansion of the signal into a two-dimensional Fourier series is used in order to reduce the size of the graphical file. Thus, the reduction of this phenomenon is a very important problem.

Objective. The aim of the current work is the application of two-dimensional Padé-type approximations with the aim of elimination of the Gibbs phenomenon in image processing and reduction of the size of the resulting image file.

Method. We use the two-dimensional Padé-type approximants method which we have developed earlier to reduce the Gibbs phenomenon for the harmonic two-dimensional Fourier series. A definition of a Padé-type functional is proposed. For this purpose, we use the generalized two-dimensional Padé approximation proposed by Chisholm when the range of the frequency values on the integer grid is selected according to the Vavilov method. The proposed scheme makes it possible to determine a set of series coefficients necessary and sufficient for construction of a Padé-type approximation with a given structure of the numerator and denominator. We consider some examples of Padé approximants application to simple discontinuous template functions for both formulaic and discrete representation.

Results. The study gives us an opportunity to make some conclusions about practical usage of the Padé-type approximation and about its advantages. They demonstrate effective elimination of distortions inherent to Gibbs phenomena for the Padé-type approximant. It is well seen that Padé-type approximant is significantly more visually appropriate than Fourier one. Application of the Padétype approximation also leads to sufficient decrease of approximants’ parameter number without the loss of precision.

Conclusions. The applicability of the technique and the possibility of its application to improve the accuracy of calculations are demonstrated. The study gives us an opportunity to make conclusions about the advantages of the Padé-type approximation practical usage.
COMPARISON OF SHORT-TERM FORECASTING METHODS OF ELECTRICITY CONSUMPTION IN MICROGRIDS
Authors: Parfenenko Yu. V. , Shendryk V. V. , Kholiavka Ye. P. , Pavlenko P. M.
Published: March 2023

Context. The current stage of development of the electric power industry is characterized by an intensive process of microgrid development and management. The feasibility of using a microgrid is determined by the fact that it has a number of advantages compared to classical methods of energy generation, transmission, and distribution. It is much easier to ensure the reliability of electricity supply within the microgrid than in large energy systems. Energy consumers in a microgrid can affect the power balancing process by regulating their loads, generating, storing, and releasing electricity. One of the main tasks of the microgrid is to provide consumers with electrical energy in a balance between its generation and consumption. This is achieved thanks to the intelligent management of the microgrid operation, which uses energy consumption forecasting data. This allows to increase the efficiency of energy infrastructure management.

Objective. The purpose of this work is to develop short-term electricity consumption forecasting models for various types of microgrid electricity consumers, which will improve the efficiency of energy infrastructure management and reduce electricity consumption.

Method. The SARIMA autoregressive model and the LSTM machine learning model are used to obtain forecast values of electricity consumption. AIC and BIC information criteria are used to compare autoregressive models. The accuracy of forecasting models is evaluated using MAE, RMSE, MAPE errors.

Results. The experiments that forecast the amount of electricity consumption for the different types of consumers were conducted. Forecasting was carried out for both LSTM and AR models on formed data sets at intervals of 6 hours, 1 day, and 3 days. The forecasting results of the LSTM model met the forecasting requirements, providing better forecasting quality compared to AR models.

Conclusions. The conducted study of electricity consumption forecasting made it possible to find universal forecasting models that meet the requirements of forecasting quality. A comparative analysis of developed time series forecasting models was performed, as a result of which the advantages of ML models over AR models were revealed. The predictive quality of the LSTM model showed the accuracy of the MAPE of forecasting electricity consumption for a private house – 0.1%, a dairy plant – 3.74%, and a gas station – 3.67%. The obtained results will allow to increase the efficiency of microgrid management, the distribution of electricity between electricity consumers to reduce the amount of energy consumption and prevent peak loads on the power grid.
IMAGE SEGMENTATION WITH A CONVOLUTIONAL NEURAL NETWORK WITHOUT POOLING LAYERS IN DERMATOLOGICAL DISEASE DIAGNOSTICS SYSTEMS
Authors: Polyakova M. V.
Published: March 2023

Context. The problem of automating of the segmentation of spectral-statistical texture images is considered. The object of research is image processing in dermatological disease diagnostic systems.

Objective. The aim of the research is to improve the segmentation performance of color images of psoriasis lesions by elaboration of a deep learning convolutional neural network without pooling layers.

Method. The convolutional neural network is proposed to process a three-channel psoriasis image with a specified size. The initial color images were scaled to the specified size and then inputed on the neural network. The architecture of the proposed neural network consists of four convolutional layers with batch normalization layers and ReLU activation function. Feature maps from the output of these layers were inputted to the 1*1 convolutional layer with the Softmax activation function. The resulting feature maps were inputted to the image pixel classification layer. When segmenting images, convolutional and pooling layers extract the features of image fragments, and fully connected layers classify the resulting feature vectors, forming a partition of the image into homogeneous segments. The segmentation features are evaluated as a result of network training using ground-truth images which segmented by an expert. Such features are robust to noise and distortion in images. The combination of segmentation results at different scales is determined by the network architecture. Pooling layers were not included in the architecture of the proposed convolutional neural network since they reduce the size of feature maps compared to the size of the original image and can decrease the segmentation performance of small psoriasis lesions and psoriasis lesions of complex shape.

Results. The proposed convolutional neural network has been implemented in software and researched for solving the problem of psoriasis images segmentation.

Conclusions. The use of the proposed convolutional neural network made it possible to enhance the segmentation performance of plaque and guttate psoriasis images, especially at the edges of the lesions. Prospects for further research are to study the performance of the proposed CNN then abrupt changes in color and illumination, blurring, as well as the complex background areas are present on dermatological images, for example, containing clothes or fragments of the interior. It is advisable to use the proposed CNN in other problems of color image processing to segment statistical or spectral-statistical texture regions on a uniform or textured background.
Investigation of the radiative decay $b \to s \gamma$ in the 3-4-1-1 model
Authors: Nguyen Tuan Duy , Do Thi Huong
Published: March 2023

We investigate the branching ratio of the radiative decay $b\to s \gamma$ in the 3-4-1-1 model with arbitrary charge parameters $p,q$. We show that the new Higgs bosons, $\mathcal{H}_1^\pm$, and the new gauge bosons $W_{13,14 }^{\pm p,q}, Z_{2,3}$ contribute to this decay. Of these sources, the main contribution comes from the interaction of the singly-charged Higgs boson. If the spontaneous breaking of the enlarged gauge group symmetry down to the electroweak group is around a few TeVs, the predictions for the branching ratio Br($b\to s \gamma$) and meson mixing are both consistent with experimental constraints.
A Theory of Ethics to Guide Investigative Interviewing Research
Authors: Neequaye David A.
Published: March 2023

This article examines ethical considerations relevant to the formulation of psychological investigative interviewing techniques or methods. Psychology researchers are now devoting much attention to improving the efficacy of eliciting information in investigative interviews. Stakeholders agree that interviewing methods must be ethical. However, there is a less concerted effort at systematically delineating ethical considerations to guide the creation of interviewing methods derived from scientific psychological principles. The disclosures interviewees make may put them at considerable risk, and it is not always possible to determine beforehand whether placing interviewees under such risks is warranted. Thus, I argue that research psychologists aiming to contribute ethical methods in this context should ensure that those methods abide by a standard that actively protects interviewees against unjustified risks. Interviewing techniques should provide interviewees, particularly vulnerable ones, with enough agency to freely determine what to disclose. Researchers should explicitly indicate the boundary conditions of a method if it cannot achieve this standard. Journal editors and reviewers should request such discussions. The suggested standard tasks research psychologists to be circumspect about recommending psychological techniques without fully addressing the ethical boundaries of those methods in their publications. I explain the proposed ethical standard’s necessity and discuss how it can be applied.
Muhadżirowie w Polsce – zagrożenie terroryzmem islamistycznym ze strony obcokrajowców
Authors:   Uniwersytet Pedagogiczny im. KEN w Krakowie, Mazur Przemysław
Published: March 2023

The aim of this article was to analyse the terrorist threat in Poland posed by foreigners participating in the global salafi jihadist project. As a rule, these are people associated with such organizations as the Muslim Brotherhood, Al-Qaeda and the Islamic State ISIS, and their derivatives. The research was to verify the actual scale of the phenomenon, the motivations, the modus operandi, and to show trends in this practice. It was also an attempt to identify system problems that hinder the fight against terrorism and may result in a threat to Polish security. The analysis also shows that, contrary to popular opinions, the threat comes not only from the Middle East, but also from Central Asia and the Caucasus. All these directions, however, have their specifics.
PROGRESSIVE PHYSICAL TRAINING OF SWIMMING FOR COLLEGE STUDENTS
Authors: Huang Guo
Published: March 2023

ABSTRACT Introduction: It is necessary to adjust the physical training of swimmers according to their physical conditions, being the progressive stages method the most indicated nowadays. However, this is not the most observed technique in teaching swimming to college students. Objective: Study a protocol for applying progressive physical training in teaching swimming to college students. Methods: In one semester of teaching swimming sports, two volunteer students (n=40) classes were selected for the experiment. Equally divided into experimental and control group, the experimental group trained according to the phased physical training, while the control trained according to the usual semester physical training program. Before and after the experiment, the relevant indices were measured. Results: Compared with constant general physical training, progressive physical training can provide better guidance of necessary training according to the actual situation of students, and the efficiency of optimization on body composition is more evident during the semester. Conclusion: Selecting progressive physical training and adjusting training items and intensity according to students’ actual situation can amplify the effect of swimming instruction on college students, its promotion is suggested. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
LOWER LIMB STRENGTH TRAINING FOR BASKETBALL PLAYERS
Authors: Yong Zhou
Published: March 2023

ABSTRACT Introduction: Lower limb strength training can improve body balance and impact the professional level of athletes. According to recent research, the strength training design has been gaining emphasis in supplementing the training of Chinese basketball professionals, although it still lacks evidence about its real optimization effect. Objective: Study the lower limb explosive strength training method in basketball players by exploring its optimization effects. Methods: The randomized controlled experiment on 30 students randomly divided into control and experimental groups lasted 12 weeks, with three weekly training sessions, each lasting 80 minutes. The control group underwent the traditional mode of lower limb strength training. In contrast, the experimental group performed a functional training protocol consisting of the single-foot jump, spring exercise, push-pull exercise, and pedaling, among other movements, according to the students’ sports conditions and needs. Results: Statistically, the results of the functional evaluative tests showed an improvement of the test group's approach to single foot takeoff touch to (3.389 ± 0.042) m, the optimization rate was 2.5078%, the double foot takeoff touch height was improved to (3, 016 ± 0.299) m, the optimization rate was 0.7950%, the whole fast dribbling range was reduced to (20.176 ± 0.374) s, the optimization rate was 6.0401%, and benefit spectrum was significantly higher than that of the control group. Conclusion: Functional strength training can significantly increase the explosive power of the lower limbs of basketball athletes. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
KNEE JOINT REHABILITATION IN BADMINTON ATHLETES
Authors: Zhang Tiejun
Published: March 2023

ABSTRACT Introduction: Athletic injuries are common in badminton, and the knee joint is the most affected. This type of injury can reduce the athlete's career, and poor treatment can cause secondary injuries during the rehabilitation period, requiring a thorough study of the causes and treatment methods. Objective: Study the causes and rehabilitation methods of knee joint injuries in badminton players. Methods: Junior badminton students and professional players from a university volunteered for a study on the causes of their knee joint injuries and the various types of rehabilitation training they were allocated to. The control group was treated with traditional physical therapy, and the experimental group was treated with slow recovery training under the guidance of doctors and teachers. The experiment lasted 6 weeks, and pain recovery and joint stability index were the main indicators. Results: Knee joint injuries in athletes often occur when performing intense or unfamiliar movements. The scores of the experimental group evolved rapidly during the 6 weeks of rehabilitation. The total stability index before training was 6.3432 ± 0.4647 versus 5.7190 ± 0.3747 after the experiment. Conclusion: Training in the physical rehabilitation of knee joint injuries in athletes has a good effect on pain relief and gain in joint stability, proving to be superior to acupuncture and traditional physiotherapy. Therefore, adding this restorative training protocol to knee joint rehabilitation in athletes is recommended. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
INVESTIGATION AND PREVENTION OF SPORTS RISK IN THE TEACHING OF TABLE TENNIS
Authors: Luo Kangrong , Zhang Wang
Published: March 2023

ABSTRACT Introduction: Among college students who are not majoring in sports, table tennis is well accepted, highly popular, and has low requirements regarding equipment investment. Therefore, many students choose this sport, although there are also certain sports risks in the course of the sport. Objective: Investigate the sporting risks of teaching table tennis and its preventive measures. Methods: Before each class exercise, the physical education teacher led the experimental class to rigorously complete the warm-up. In contrast, the control class maintained the basic program configuration without the warm-up phase. After 24 hours of practice, students in the experimental class and the control class were tested with the FMS. Results: The experimental class stability score increased from 1.58 points to 1.84 points, and the trunk rotation stability score increased from 1.68 points to 2.05 points. Conclusion: Warm-up activities before sports can further reduce sports risks in the table tennis teaching process by providing a better and safer higher education environment for students. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
IMPACTS OF COVID-19 ON COLLEGE STUDENTS’ SPORTS
Authors: Wen Nan , Liu Shengze , Diliya Dilixiati
Published: March 2023

ABSTRACT Introduction: Students have realized the importance of physical education after the epidemic of COVID-19 and have increased the demand of seeking a healthy lifestyle even during home isolation. In contrast, the current physical education system in colleges and universities does not meet the real demands of its students, demonstrating a barrier between teaching and learning. Objective: Study students’ lifestyle and sports habits during the epidemic of COVID-19. Methods: An online questionnaire was conducted to investigate and analyze students’ home exercise environment, lifestyle and exercise practices, and exercise psychology during COVID-19. A total of 1274 valid questionnaires were obtained. The data from the questionnaires were entered, sorted, and analyzed, and relevant figures were drawn and discussed. Results: It was noted that students mostly preferred outdoor exercise equipment and hands-free activities outside the home. This picture reversed during the COVID-19 epidemic when students preferred indoor equipment. In terms of exercise programs, an effective exercise program is needed to allow people to exercise effectively during home isolation. Conclusion: Physical education teachers in colleges and universities should select the right means of physical fitness to combine sports and sports life that can be practiced at home, according to the actual situation of students and their psychological demands. Students should be given a better sports experience during the quarantine process, stimulating them to stay positive and with good physical quality, aiming at strengthening immunity and reducing the risk of infection by COVID-19. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
EFFECTS OF EXERCISE ON HUMAN ENERGY METABOLISM IN HIGH TEMPERATURE AND HIGH HUMIDITY ENVIRONMENT
Authors: Zhang Jinrui , Liu Han , Dai Weinan
Published: March 2023

ABSTRACT Introduction Many exercise enthusiasts have started participating in sports in the high-temperature environment in recent years due to the increasing popularity of these sports habits. However, their scientific studies still have a gap in their safety and effectiveness. Objective Measure the energy supply characteristics of fat and sugar oxidation during exercise in different high-temperature and humidity environments. Methods 20 healthy adult subjects were exposed to fixed-intensity exercise for 20 minutes at 30-33 oC, 20% relative humidity (RH), and 50% RH, respectively. Results Under the silent exposure condition, compared with RH 20% and RH 50% under high temperature, sugar oxidation was significantly increased (P<0.01), while fat oxidation was significantly reduced (P<0.01), and total energy consumption was significantly increased (P<0.01). Under the condition of 65% VO2 max exercise, compared with RH 20% and RH 50% at high temperatures, the amount of sugar oxidation was significantly reduced (P<0.05), and the total energy consumption was significantly reduced (P<0.05). Conclusion Under 65% exercise under VO2 max in the high temperature and humidity-controlled environment, the high temperature and medium humidity (RH 50%) environment consumes more energy, and there is a greater amount of sugar oxidation. Level of evidence II; Therapeutic studies - investigating treatment outcomes.
AEROBIC EXERCISE EFFECTS ON THE HEALTH MANAGEMENT OF ELDERLY PATIENTS WITH CHRONIC DISEASES
Authors: Juan Pu , Xianyi Zha
Published: March 2023

ABSTRACT Introduction The acceleration of the aging process causes the number of elderly patients with chronic diseases to increase every year, causing hypertension, diabetes, cerebral infarction, and chronic respiratory diseases. This situation considerably threatens the health of the elderly, affecting their quality of life. Objective Improve the health awareness of the elderly as well as modify unhealthy lifestyles. Methods Changes in blood glucose, blood pressure, blood lipids, uric acid, blood oxygen saturation, body mass index (BMI) and other indicators in elderly patients with chronic diseases before and after aerobic exercise were compared and analyzed. Symptoms and common self-management efficacy scores in elderly patients with chronic diseases were compared and analyzed before and after aerobic exercise. Results The detection rate of liver steatosis, overweight and obesity significantly decreased after aerobic exercise. Symptom scores and common self-management efficacy were significantly higher than those collected before the intervention (p<0.05). Conclusion The actual measured and predicted theoretical value of vital capacity, and other vital indicators were significantly improved. Level of evidence II; Therapeutic studies - investigating treatment outcomes.
INFLUENCES OF PHYSICAL EXERCISE ON PHYSICAL FITNESS OF FEMALE UNIVERSITY STUDENTS
Authors: Sun Ling
Published: March 2023

ABSTRACT Introduction Attention to the physical health of female university students has been increasing in recent years, and scientifically formulating sports plans for this public, and enhancing their fitness, has become an important topic. Objective Explore the influences of long-term physical exercise on the physical fitness of female college students. Methods 240 female college students in a given city were selected as volunteers, and divided into a resistance exercise group, an aerobic exercise group, and a control group. The total intervention period was ten weeks, followed by the recollection of vital data and other relevant markers for statistical analysis. Results After ten weeks of exercise, the task performance of the resistance exercise group was improved; the task performance of the resistance exercise group was significantly superior to aerobic exercise and control. Conclusion It was observed that the task performance of the resistance exercise group and the aerobic exercise group were positively impacted, and the positive benefits of the two types of exercise were different. Level of evidence II; Therapeutic studies - investigating treatment outcomes.
IMPACTS OF AEROBIC EXERCISE ON CARDIOVASCULAR HEALTH IN COLLEGE STUDENTS
Authors: Ying Lu , Wei Duan , Xiaoqi Luo
Published: March 2023

ABSTRACT Introduction Cardiovascular disease (CVD) is a major disease that seriously endangers human health. CVD in many adults begins in adolescence and even in childhood. The cardiovascular health of college students in China cannot be ignored. Objective Verify the impacts of aerobic exercise (APA) on the cardiovascular health of college students. Methods The paper uses the literature method to explore the health-promoting role of aerobic exercise in opposing and improving CVD. Also the APA exercise method of effectively improving cardiopulmonary fitness (CRF) to prevent and improve CVD. The results showed that APA can improve microcirculation by increasing microvascular reactivity. Results Coronary blood flow in healthy adults is only 8% to 9% of cardiac bleeding, while coronary blood flow increases by 40% and oxygen intake by 2-2.5 times. Aerobic exercise can improve insulin sensitivity and reduce the risk of CVD. Some risk factors related to vascular endothelial dysfunction, such as hypertension, atherosclerosis, and coronary artery disease, are often accompanied by the phenomenon of insulin resistance in the induction of CVD. At the same time, improving IR may play an effective role in preventing and treating CVD. Conclusion APA can reduce and suppress the occurrence and development of CVD risk factors such as atherosclerosis, hypertension, hyperlipidemia, hyperglycemia and obesity, intestinal microecological disorder, and reduce free radical oxidative damage and apoptosis by improving insulin sensitivity of vascular endothelial cells, inhibiting inflammatory reaction, improving mitochondrial function of cardiomyocytes, reducing body mass index and obesity, and maintaining gut micro-ecological balance, and improving vascular endothelial function and reducing CVD such as myocardial infarction. Level of evidence II; Therapeutic studies - investigating treatment outcomes.
EXPERIMENTAL STUDY ON THE EFFECTS OF YOGA ON PHYSICAL FITNESS IN ADOLESCENTS
Authors: Shengcai Li , Zhihui Yuan , Min Gong
Published: March 2023

ABSTRACT Introduction Yoga originated in the Indus River basin, is an ancient technique involving physical skills or static aerobic exercise. Objective Test and analyze the changes in physical fitness of adolescents submitted to yoga experiment. Methods Experimental method, literature review, mathematical statistics and other research methods were used in making this paper. 30 freshmen in primary education at Yancheng Normal University were selected for a 12-week yoga teaching training to explore the impact of yoga on health and physical fitness of ordinary college students. Results Body fat rate and fat mass index decreased, lung volume increased significantly, and physical fitness increased significantly. Conclusion After 12 weeks of yoga exercises, the body composition of the tested college students improved significantly, increasing both flexibility and physical fitness. Notable changes were also seen in balance and responsiveness, revealing an intrinsic improvement in the students’ skeletal muscles. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
Stability yield indices on different sweet corn hybrids based on AMMI analysis
Authors: Mousavi S. M. N. , Illés A. , Szabó A. , Shojaei S. H. , Demeter C. , Bakos Z. , Vad A. , Széles A. , Nagy J. , Bojtor C.
Published: March 2023

Abstract Currently, sweet corn is considered an important crop due to its high sugar content and low starch content. Important sugars in sweet corn include sucrose, fructose, glucose, and maltose. The purpose of the present study was to use the yield indices of the eight examined sweet corn hybrids and the correlation of the yield indices together. Concentration is important for consumers in terms of yield indices. The research site was located at the Látókép Experimental Station of the University of Debrecen. The small plot experiment had a strip plot design with four replications. The previous crop was sweet corn; the plant density was 64 thousand/ha. The obtained result indicates that Biplot AMMI based on IPCA1 showed that the DB, NO, GS, and GB hybrids had stability and high performance in terms of yield indices. At the same time, fructose and glucose had stable parameters for the hybrids involved in the study. IPCA1 AMMI biplot showed that the ME hybrid had stability and high performance in terms of iron and zinc as well. IPCA2 AMMI biplot showed that DE, GB, and GS hybrids had stability and the highest performance on yield parameters in the scope of the research. Fructose, glucose, and sucrose had stable parameters on hybrids based on IPCA2. The DB and SE hybrids had desirable performance in Lutein and Zeaxanthin based on the biplot. The DE hybrid had a maximum performance on iron and zinc parameters.
O imbricamento entre razão e emoção na deliberação online sobre a redução da maioridade penal
Authors: Hauber Gabriella , Maia Rousiley C. M.
Published: March 2023

Resumo: Este artigo tem como objetivo investigar a relação existente entre emoção e razão em comentários sobre a redução da maioridade penal em dois ambientes online distintos: página ativista no Facebook e portal legislativo. Ao focalizar a associação entre justificação e emoção - e distintos padrões que daí emergem em discussões interpessoais online -, este artigo contribui para preencher uma lacuna em estudos sobre deliberação, que, via de regra, entendem o processo argumentativo como desprovido de afetos. Nossos resultados revelam que as características do ambiente digital interferem no provimento de razões, conforme esperado pela literatura. Contudo, o mesmo não ocorre em relação à expressão de emoções - sugerindo que as emoções sofrem menos variação em decorrência dos espaços interacionais. Este artigo, ao comparar a discussão online em plataformas distintas, contribui também para avançar análises empíricas sobre as especificidades do ambiente digital.
Effect of carbon nanotubes on Portland cement matrices
Authors: Mendes Thiago Melanda , Medeiros Marcelo Henrique Farias de
Published: March 2023

abstract: This study evaluates the effects of three carbon nanotubes with different geometric characteristics on the rheological behaviour and mechanical performance, as well as on the microstructure of mortars and cement pastes. For nanotube content ranging from 0.025 to 0.2 wt%, the yield stress and viscosity were determined by rotational rheometry, and mechanical performance was evaluated by flexural strength and dynamic modulus of elasticity. The microstructural analysis was performed by X-ray diffraction, thermo-gravimetric analysis and scanning electron microscopy (SEM). The obtained results showed that the yield stress presents a considerable increase as the carbon nanotube content increases. The viscosity was also influenced by the presence of carbon nanotubes. The flexural strength of mortars increases for different amounts of carbon nanotubes, and depending on the geometric characteristics of the carbon nanotubes, the material behaves like a composite. The microstructural analysis showed the nucleation of hydration products on the surface of the carbon nanotubes, and that the better mechanical performance of matrices containing carbon nanotubes is not related to the increase in hydration products.
EXAMINING COLLEGIATE BLACK MALES' STEM TRAJECTORIES: THE CRUCIAL ROLE OF THEIR BLACK FATHERS
Authors: Jett Christopher C.
Published: March 2023

Black males' collegiate experiences in science, technology, engineering, and mathematics (STEM) are gaining traction in the research literature. In this work, scholars are utilizing asset-based approaches to examine Black males' experiences in STEM. Asset-based orientations are also being extended to work on, for, and with Black families. Of utmost importance with respect to this article, Black fathers play a significant role in their sons' lives. Thus, considerable attention should be paid to the fatherson dyad by practitioners and researchers. This case study examines ten Black male STEM majors' perspectives about their Black fathers. The findings reveal that these Black males described their Black fathers as role models and STEM champions with regard to their STEM pursuits. Recommendations for practice and future research are discussed to advance father-friendly work and ultimately broaden the participation of Black males in STEM.
ERİŞKİNLERDE D VİTAMİNİ DÜZEYLERİ İLE İNSÜLİN DİRENCİ ARASINDAKİ İLİŞKİNİN DEĞERLENDİRİLMESİ
Authors: GÜREL KÖKSAL Neslişah , KÖKSAL Mustafa , SAĞLAM Zuhal Aydan
Published: March 2023

Amaç: Çalışmamızda erişkinlerde metabolik sendrom bileşenlerinden olan insülin direncinin D vitamini eksikliği ile ilişkisini araştırmayı amaçladık. Gereç ve Yöntemler: Bu araştırma İstanbul Medeniyet Üniversitesi Göztepe Eğitim ve Araştırma Hastanesi Aile Hekimliği Polikliniğine 1 Aralık 2014 – 1 Nisan 2015 tarihleri arasında herhangi bir nedenle başvurmuş olan erişkinlerden diyabet tanısı olmayan ve D vitamini tedavisi kullanmayan hastaların dahil edildiği retrospektif bir çalışmadır. Çalışmamız için gerekli bütün parametlere [boy, kilo, 25(OH)D, glukoz, insülin, Total Kolesterol, LDL Kolesterol, HDL Kolesterol, Trigliserit] sahip olan toplam 284 hasta çalışmaya dahil edildi. Bulgular: Tüm olguların yaş ortalaması 43,58±15,49 olup %72,5’i (n=206) kadındı. Tüm olguların VKİ ortalaması 28,99±6,53 kg/m², serum 25(OH)D ortalaması 16,17±11,17 ng/ml ve HOMA-IR ortalaması 2,15±1,19 idi. VKİ, serum 25(OH)D ve HOMA-IR ortalamaları açısından kadın ve erkek cinsiyetler arasında anlamlı farklılık yoktu. İnsülin direnci düzeylerine göre olguların tamamının vücut kitle indeksi düzeyleri arasında istatistiksel olarak ileri düzeyde anlamlı farklılık saptanmıştır. D vitamini düzeylerine göre olguların vücut kitle indeksi ölçümleri arasında istatistiksel olarak anlamlı farklılık saptanmamıştır. İnsülin direnci 2,5’ten düşük olan erkek olguların D vitamini değeri, insülin direnci 2,5 ve üzeri olan erkek olgulara göre istatistiksel olarak anlamlı düzeyde yüksek saptanmıştır. Kadın olgularda ve olguların tamamında insülin direnci düzeylerine göre D vitamini ölçümleri arasında istatistiksel olarak anlamlı farklılık saptanmamıştır. Sonuç: Sonuç olarak kronik hastalıkların tanı, takip ve tedavilerinde ve insülin direnci ile başlayan metabolik süreçlerin yönetiminde D vitamininin optimal düzeylerde tutulması uygun bir yaklaşım olacaktır.
Corrosion-resistant steels based on Fe – ~13 % Cr: Heat treatment, corrosion- and wear resistance. Review
Authors: Kostina M. V. , Rigina L. G. , Kostina V. S. , Kudryashov A. E. , Fedortsov R. S.
Published: March 2023

Martensitic stainless steels with 13 % Cr are widely used in many industries due to their high level of mechanical properties and acceptable corrosion resistance. The paper consolidates information about the guaranteed level of properties and the heat treatment conditions necessary for its implementation. The properties after the treatment proposed by the researchers are compared with the known properties for industrial metal. Dependences of hardness of the hardened steels of 13Cr type with 0.20 – 0.5 % C on austenitization temperature and accompanying changes in the structure were analyzed, the temperatures providing maximum hardening and the temperatures at which the steel ceases to harden were identified. Influence of the austenitization duration, heating and cooling rates on the steels properties is described. The review considers mechanical properties and corrosion resistance after quenching, quenching and tempering in relation to the structural-phase states of steels. It is shown in detail how the type of secondary phases during tempering, their quantity and distribution affect the corrosion resistance of steels with 13 % Cr. It increases with an increase in the heating temperature during austenitization and decreases with an increase in tempering temperature due to precipitation of Cr23C6 carbides and depletion of the matrix in chromium to concentrations below 12 %. The tempering temperature of 500 – 550 °C is recognized as the worst: due to the intense precipitation of carbides, the steel is not passivated, the corrosion rate is maximal. For steels of 20Kh13 type, low tempering quenching (for a combination of high strength, good corrosion resistance and satisfactory ductility) or, more often, high tempering at ~(650 – 700) °C (good ductility, satisfactory corrosion resistance) is recommended. For steels of 40Kh13 type, a temperature of ~700 °C is not recommended due to the increased concentration of carbides and insufficient corrosion resistance. Examples are given of increasing the wear resistance of steels of 40Kh13 type due to surface treatments, from nitriding to laser and plasma surface hardening.
Cracking in magnesium oxide briquettes
Authors: Babailov N. A. , Loginov Yu. N. , Polyanskii L. I.
Published: March 2023

The paper considers the geometry of cracks in the volume of briquettes made of a slag-forming material widely used in ferrous metallurgy – magnesium oxide MgO. The authors present the results of measuring the geometry and location of cracks in the volume of briquettes obtained by roller briquetting. The possibility of cracks in the volume of briquettes is a technological feature of roll briquetting. This defect affects the strength of the briquettes, as well as the yield (and productivity) in the process of briquetting on roller briquetting machines. The number and angle of inclination of cracks relative to the direction of briquetting are determined from photographs of the briquette side surface using graphic programs.
KURUMSAL SOSYAL SORUMLULUĞUN FİNANSAL PERFORMANS ÜZERİNDEKİ ETKİSİ: ENTELEKTÜEL SERMAYE İLE REKABET AVANTAJININ ARACILIK ROLÜ
Authors: KILIÇLI Yasin , AYGÜN Mehmet
Published: March 2023

İşletmelerin kurumsal sosyal sorumluluk faaliyetleri ile entelektüel sermayeleri, sürdürülebilir bir rekabet avantajı sağlamada işletmeler için hayati bir öneme sahiptir. Dolayısıyla küresel iş dünyasında işletmelerin uyguladıkları sosyal sorumluluk faaliyetleri ile sahip oldukları entelektüel sermaye varlıkları kuruluşlara rekabet avantajı kazandırarak onların finansal olarak ta güçlü kalmasını sağlayan önemli unsurlardır. Bu çalışmanın amacı, kurumsal sosyal sorumluluğun finansal performans üzerindeki etkisini incelemektir. Ayrıca entelektüel sermaye ile rekabet avantajının, kurumsal sosyal sorumluluk ile finansal performans arasında aracılık rolünün bulunup bulunmadığını ortaya çıkarmaktır. Bu çalışma İstanbul Sanayi Odasına bağlı 220 işletme üzerinde yapılmıştır. Çalışma kapsamında değerlendirilen veriler, anket yöntemi kullanılarak elde edilmiştir. Verilerin analizinde SPSS 23 ve AMOS 24 istatistik programları kullanılmıştır. SPSS 23 programıyla betimsel istatistikler ve korelasyon analizi gerçekleştirilmiştir. Hipotezlerin test edilmesi ve doğrulayıcı faktör analizi için AMOS 24 programı kullanılmıştır. Yapılan analizler sonucunda, kurumsal sosyal sorumluluğun finansal performans, entelektüel sermaye ve rekabet avantajı üzerinde pozitif yönde ve istatiksel olarak anlamlı bir etkisinin olduğu anlaşılmıştır. Ayrıca kurumsal sosyal sorumluluk ile finansal performans arasında entelektüel sermaye ile rekabet avantajının aracılık etkisinin (rolünün) olmadığı çalışmada elde edilen diğer önemli bir sonuçtur.