bluuebunny/crossref_metadata_2025 huggingface dataset:
Effectiveness of Cognitive Rehabilitation on Agitation, Apathy and Cognitive Function in Male Elders with Mild Cognitive Impairment
Authors: Valashejerdi Zahra Fereidouni , Abolghasemi Shahnam , Khalatbari Javad , Tarkhan Morteza
Published: July 2022

Introduction: The elders need proper medical and psychiatric care and attention, so choosing a suitable therapeutic approach for their psychological care, especially in those with cognitive impairment, will be effective in improving psychological symptoms and their health. The present study aimed to investigate the effectiveness of cognitive rehabilitation on agitation, apathy and cognitive function.
 
Methods: This quasi-experimental study carried out among male elders with mild cognitive impairment (MCI) in Kahrizak Charity nursing home in Alborz province in 2020. A sample of 36 male elders with MCI was purposefully selected and randomly assigned to experimental (n = 18) and control (n = 18) groups. Data were collected through Cohen-Mansfield Agitation Inventory; Apathy Evaluation Scale and Montreal Cognitive Assessment-Basic. The intervention group received 8 sessions of 90 minutes, cognitive rehabilitation based on kelly and O'Sullivan's cognitive rehabilitation strategies and techniques.
 
Results: After controlling the mean scores of the pretest, a significant difference was observed in agitation (96.6 vs 101.9) apathy (30.02 vs 34.10) and cognitive function (19.60 vs 16.80) between experimental and control groups. This means that cognitive rehabilitation reduced agitation and apathy with effect sizes of 0.42 and 0.54 respectively and increased cognitive function with an effect size of 0.65.
 
Conclusion: Considering the effectiveness of cognitive rehabilitation in reducing agitation, apathy and increasing cognitive function of the participants, cognitive rehabilitation is suggested to improve individual functioning and interpersonal relationships in the elderly with MCI.
Effectiveness of Mindfulness-Based Compassion Therapy on Despair and Rumination in Older Adults
Authors: Kalatian Marjan , Salehzade Maryam , Bakhshayesh Alireza
Published: July 2022

Introduction: Hopelessness and negative rumination are among issues the older adults cope with it. Examining effective therapy strategies to decrease them are of great importance. The current study was conducted with regard to understanding the importance of this issue. It aims at examining the effectiveness of mindfulness-based compassion therapy on hopelessness and rumination among the female elderly.
 
Methods: It was a semi-experimental study with pre-test and post-test and a control group. Statistical population was 70 elderly females of over 60 and above in nursing home in Bojnurd City, North Khorasan Province, Iran, in 2020. Among these people, 30 individuals willing to participate in the study were introduced by the center’s psychologist and randomly assigned into two experimental (15) and control (15) groups. Instrument for collecting data was Beck Hopelessness Scale and Hooksma rumination questionnaire. Data obtained from the questionnaires were analyzed by the covariance analysis test.
 
Results: Results suggested that mindfulness-based compassion therapy led to a significant decrease on mean scores of hopelessness regarding the experimental group in comparison with the control group (p < 0.01). However, it did not have a significant effect on rumination.
 
Conclusion: Mindfulness-based compassion therapy may be used for decrease of hopelessness regarding aging, but it is not effective for rumination.
The Effect of Teaching Fundamentals of Geriatric Life on Nurses' Knowledge and Attitudes toward Aging
Authors: Haghani Maryam , Mandegari Zahra , Dehghani Tafti Arefe , Nasiriani Khadijeh , Entezari Ahmad
Published: July 2022

Introduction: Nurses are always involved with caring for elderly patients. They need to increase their knowledge and skills in the field of aging to provide effective care to elderly patients. Moreover, attitudes of nurses affect the quality of care for elderly people. Some interventions such as education are effective tools for improving nurses' knowledge and attitudes to better understand the problems of the elderly. The present study aims at determining the effect of teaching fundamentals of geriatric life on nurses' knowledge and attitudes toward aging.
 
Methods: This was a quasi-experimental, pretest-posttest with control group study. It was performed on 91 nurses working in Meybod (44 nurses) and Ardakan Hospitals (47 nurses). Training sessions on fundamentals of geriatric life were conducted for the experimental group. The training program consisted of five training sessions in the field of geriatrics . Data collection instruments included: Palmore's Facts on Aging Quiz, and Kogan's Attitude Toward Older People Scale, which were completed three times before, immediately after, and two months after the intervention for both groups.
 
Results: There was no significant difference in knowledge between the two groups before the intervention (p = 0.792). Yet, the knowledge score immediately and two months after the intervention showed a significant difference between the experimental and control groups (p < 0.01). The mean score of attitude before intervention was no significant difference between groups (p = 0.069). However, there was a significant difference in attitude score immediately and two months after the intervention between the experimental and control groups (p < 0.01).
 
Conclusion: Teaching fundamentals of geriatric nursing to nurses improved their knowledge and attitudes toward the problems and needs of the elderls. Using retraining courses in the field of aging is recommended for nurses.
Caring of Health Care Team in COVID-19 Crisis
Authors: Bahariniya Sajjad , Ezati Asar Mohammad , Madadizadeh Farzan
Published: July 2022

The Article Abstract is not available.
Appropriateness of Brain Magnetic Resonance Imaging (MRI) Prescriptions and Imposed Financial Burden: Evidence from Iran
Authors: Kalantarhormozi Mohammadreza , Yazdanpanah Ahmad , Yazdankhahfard Mohammadreza , Amiri Batool , Nemati Reza , Sohrabi Shekafti Milad , Salari Hedayat , Esfandiari Atefeh
Published: July 2022

Background: The use of advanced and expensive technologies requires financial, human and capital resources. Brain Magnetic Resonance Imaging (MRI) has high contrast sensitivity for visualizing differences among the tissues. Unnecessary diagnostic imaging imposes excessive cost on health systems. This study aimed to determine the appropriateness of brain MRI prescriptions in 2021.
Methods: This cross-sectional study recruited 274 patients who referred to Bushehr teaching hospital. They had been prescribed MRI of the brain due to headache and dizziness. We used the data collection form developed in the previous study. The appropriateness of the brain MRI prescription was determined based on the appropriate indications during 2021.
Results: About 61 % of the referrals were due to headache and 39 % were because of dizziness. Overall, MRI was evaluated as inappropriate for about 38 % of the patients. The appropriateness of prescriptions had a significant relationship with age, gender, education, job status, complaint, prescribing physician, and MRI applicant with P-value < 0.050.
Conclusion: Findings revealed more than one-third of brain MRI services were not clinically appropriate. Due to the high cost of MRI, it is necessary to make prescriptions in accordance with indications to prevent unnecessary diagnostic procedures and to prevent induced demand. Health system policymakers and healthcare providers should develop clinical guidelines and implement them to reduce the costs of health systems.
The Relationship Between Leadership Style and Organizational Entrepreneurship in the Staff Managers of Ahvaz Jundishapur University of Medical Sciences
Authors: Zare Qala Seyyedi Fatemeh , Havasi Boshra , Fadaei Dehcheshmeh Nayeb
Published: July 2022

Background: Today, the success of organizations depends on creativity, innovation and entrepreneurship. One of the appropriate tools for the growth of organizational entrepreneurship is an appropriate leadership style tailored to the concepts of entrepreneurship in the organization. This study aimed to examine the relationship between leadership style and organizational entrepreneurship in the staff managers of Ahvaz University of Medical Sciences in 2019.
Methods: This was a descriptive-analytic cross-sectional study conducted in 2019. All the staff managers (n= 85) of Ahvaz University of Medical Sciences were approached to participate in the study. Sampling was conducted using the census method. Sixty participants completed the questionnaire. Data were collected using two questionnaires: 1) the leadership style questionnaire, Clark and 2) the organizational entrepreneurship questionnaire. Data were analyzed using SPSS16 descriptive statistics (e.g. frequency, percent, mean ± Standard Deviation (SD)), and statistical tests including t-test, ANOVA and Pearson Correlation Coefficient.
Results: The mean ± SD of organizational entrepreneurship in staff managers was estimated at 3.18 ± 0.66. The highest type of leadership among managers was related to participative leadership with 3.90 ± 0.51. There was a direction and significant association between autocratic leadership style and organizational entrepreneurship (r = 0.30, P-value = 0.01). In contrast, no significant association was found between participative leadership and organizational entrepreneurship (P-value = 0.05) and between laissez-faire leadership style and organizational entrepreneurship (P-value = 0.62).
Conclusion: Having a leadership style tailored to the business environment makes the organization an entrepreneurial organization. In order to have an entrepreneurial organization, some measures must be taken so that managers can adopt appropriate leadership styles to provide the necessary environment for creating a successful organization and the presence of creative and entrepreneurial people in the organization.
Direct Medical Costs Analysis of Covid-19 Patients in the Hospitals of Ilam University of Medical Sciences
Authors: Karimi Fereshteh , Ezzati Farahnaz , Sadeghifar Jamil , Bazyar Mohamad , Dargahpour Maryam
Published: July 2022

Background: The most well-known classification of the cost of diseases is direct medical cost. The aim of this study is to investigate and analyze direct treatment costs of patients with Covid-19 by hospitals affiliated with Ilam University of Medical Sciences.
Methods: This was a descriptive-analytical, cross-sectional study performed retrospectively. The hospital expenditure information in Ilam province from March to October 2020 was used. Cost information related to all patients was collected and classified and reviewed using Excel 2016 software. The average direct treatment costs of hospitalized patients were also determined.
 Results: The direct costs of treatment in hospitalized patients in Ilam were estimated at $ 2349272.094 (98669427959 billion Rials). The per capita direct medical costs were calculated to be $ 1228.056 (51578373 million Rials(. The largest share of the cost related to pharmaceutical services and the share of basic insurance was equal to $ 934.570 (39,252,109 million Rials).
Conclusion: Results of the study indicated that the treatment costs of patients entering Ilam province are high, and the highest cost concerns pharmaceutical services. Taking necessary measures to prevent and control the spread of coronary artery, using the most cost-effective drug interventions and reducing unnecessary hospital stays of patients can increase the efficiency of financial resources and reduce direct medical costs in Ilam province.
Design, Implementation, and Evaluation of Physicians Empowerment Course for Evidence-Based MRI Prescription at Bushehr University of Medical Sciences in 2021
Authors: Salari Hedayat , Esfandiari Atefeh
Published: July 2022

The Article Abstract is not available.
Función e importancia del profesorado desde la justicia social y la justicia curricular
Authors: Hernández Aragón Magaly
Published: July 2022

La figura, función y formación del profesorado ha sido un tema de constante análisis y debate. Su estudio puede ser abordado desde múltiples y diversas perspectivas, sobre todo reconociendo la importancia que reviste en el desarrollo educativo de un país. Precisamente, en el presente texto se analiza la función e importancia de la figura del profesorado desde la justicia social y la justicia curricular, dos conceptos potentes que nos hacen volcar la mirada en las prácticas pedagógicas que desarrollan las y los docentes en los centros escolares; en el tipo de formación que se le brindan a los niños, a los jóvenes; en la consciencia que se les configura desde los espacios educativos institucionales. Esto es, el cuestionarse acerca de la función del profesorado de situarse como promotor de una estructura social dominante e injusta o la de ubicarse como un docente que gesta cambios desde sus microespacios encaminados a formar personas con pensamientos y actuaciones que permitan forjar sociedades más justas, plurales e incluyentes.
Descripción del laboratorio de cambio: Una propuesta para aprender a aprender en la organización escolar
Authors: Brito Rivera Hugo Armando
Published: July 2022

It is discussed, at a descriptive and exploratory level, how the Change Laboratory (LC) can contribute to the development of Learning to Learn (L2L) in the school organization. The relevance of developing this competence to face rapidly changing and increasingly volatile educational contexts is pointed out. Given that teaching L2L involves skills that involve different levels of collective activity, LC is proposed as a coherent model to develop this competence from an organizational perspective. The intervention is proposed as an arena for negotiation and renewal of meanings oriented to the increase of L2L from the knowledge and experimentation of its components. The aim of the paper is to answer: Which training models contribute to the reformulation of professional practices in order to promote L2L in the school? How is it possible to contribute to the conformation of a repertoire of educational practices coherent with the values and attributes of such competence? The article subscribes principles of activity theory through the notions of activity system and expansive learning, useful to approach the process of organizational learning in front of the qualitative transformation of school work.
Keywords: Learning to Learn, Change Laboratory, formative intervention, activity theory, description.
Vida simbólica universitaria: discurso, dinámicas e interacciones a distancia en una organización educativa en pandemia
Authors: Mandujano Contreras Susana , Sandoval Núñez Lucia
Published: July 2022

Educational organizations in the last two years have been affected by the social phenomenon that spread throughout the world by the virus called SARS-CoV-2, highlighting that, although in all organizations in our country actions prevailed under an emerging situation of suspension of face-to-face classes at all levels, little is known about the actions taken to maintain their stability and to be able to face a number of problems to to subsist in the face of the great health problems and economic deprivation that arose as a result; each organization in particular, had a different way of excelling. This work was carried out under a qualitative approach of a descriptive type through the narrative, analysis of the discourse and the symbolic life of the actors of this organization we will be able to understand the solutions applied to face the challenges before an emerging change to solve the conflicts of the reorganization of their university life. Such. is the case of this technological institution that under the gaze of organizational studies we will observe how it applied the adaptability of its symbolic life from the traditional to the technological, all from the perspective and approach of the actors called: institution, teachers and students.
Keywords Symbolic life; interaction; institutional identity; Pandemic; educational institution
Toxoplasmosis en ganado bovino destinado al consumo humano en Lima, Perú
Authors: Serrano-Martínez Enrique , Quispe Marco
Published: July 2022

El estudio tuvo como objetivo evaluar la presencia de anticuerpos frente a Toxoplasma gondii en bovinos de engorde

destinados al consumo humano. Las variables de clasificación consideradas en el estudio fueron: grupo etario (de

2 a 3 años, más de 3 a 4 años y más de 4 años), sexo (hembra y macho), raza (Holstein, Brown Swiss y Mestizo/ Criollo) y ubicación del matadero (Norte, Sur, Oeste y Este de Lima). Para ello se extrajo muestras de sangre de 385 bovinos en cuatro mataderos oficiales de Lima, Perú. Los sueros obtenidos fueron analizados mediante la técnica de Inmunofluorescencia Indirecta (IFAT), considerando como positivos a animales con título de anticuerpos igual o mayor a la dilución 1:100. Los resultados demostraron que el 32,2 ± 4,7% (124/385) de bovinos presentaron anticuerpos contra T. gondii, no encontrándose asociación entre las categorías de las variables de clasificación y la frecuencia de seroreactores. La titulación de anticuerpos entre bovinos positivos evidenció animales con reacción positiva máxima a la dilución de 1/100 (63,7%, 79/124), 1/200 (17,7%, 22/124), 1/400 (10,5%, 13/124), 1:800 (4,8%, 6/124), 1:1600 (2,4%, 3/124) y 1:3200 (0,8%, 1/124) mediante IFAT. El estudio evidenció la presencia de seroreactores al parásito T. gondii en bovinos de engorde destinados al consumo humano, el mismo que se transmite a través del consumo de carne cruda o poco cocida, sea esta procedente de bovinos u otra especie. El estudio aporta evidencia que permite justificar la necesidad de elaborar medidas sanitarias dirigidas a asegurar la inocuidad de los productos alimenticios y/o minimizar los posibles riesgos que pueda significar el consumo de estos productos cárnicos.
Indicadores demográficos de canes y felinos con dueño en el distrito de Lince, Lima-Perú, 2020
Authors: Castillo Geraldine , Asmat Iván , León Daphne
Published: July 2022

El objetivo del estudio fue describir los indicadores demográficos de la población de canes y felinos domésticos con dueño en el distrito de Lince, Lima. La investigación tomó como base el uso de encuestas. La población de estudio fueron las viviendas de cinco sectores del distrito de Lince. El estudio recolectó un total de 737 encuestas válidas, donde el 60,5% provinieron de casas y 37,3% de departamentos. Los resultados muestran que el 46,0% de las viviendas poseían canes y 16,4% poseían felinos. El promedio de can y felino por vivienda fue de 1,4 y 1,8, respectivamente. Asimismo, la relación persona: animal fue de 5,4 para canes y 12,3 para felinos. El porcentaje de supervivencia de las crías para canes fue de 84% y 81,8% para felinos. La esperanza de vida estimada para canes y felinos domésticos fue de 11,5 y 5,8 años, respectivamente. En canes predominó la tenencia de machos (53,6%), de tamaño pequeño (49,4%), de raza no definida (50,6%), no esterilizados (61,2%) y con una edad promedio de 5,3 años. En el caso de los felinos, predominaron hembras (57%), esterilizados (69,1%), de raza no definida (90,3%) y edad promedio de 4,1 años. Se espera que la información obtenida sirva de línea base a fin de que las autoridades competentes evalúen la necesidad de desarrollar políticas de gestión en temas de tenencia responsable de animales de compañía en el distrito de Lince.
Escola da Terra em Minas Gerais: repercussões da formação continuada nas escolas do campo
Authors: Freitas Eliano de Souza Martins , Freitas Erica Fernanda Justino de , Martins Maria de Fatima Almeida , Carmo Nayara Cristine Carneiro do
Published: July 2022

In this text, we present the repercussions of continuing education: Escola da Terra, developed by the Center for Studies and Research in Rural Education of the Faculty of Education of the Federal University of Minas Gerais, FAE-UFMG, in partnership with the State Department of Education of Minas Gerais Gerais, Municipal Education Departments and the Ministry of Education (MEC). The program has already carried out four offers between 2015 and 2021. Such training is based on principles of Rural Education: considering the school as a right, alternating training as a pedagogical condition and the protagonism of subjects as central. Anchored in these principles, the training process is built, considering the educational needs of the territories, articulating them to specific methodological procedures, questioning them about the school and its subjects, in order to understand them in order to act and transform the practice. The results of the training course of the four offers of the program in Minas Gerais were achieved, both at the individual quantitative level, with more than five hundred Pedagogical Action Plans (PAPs), and at the collective level, considering changes in schools in different municipalities in the State of Minas Gerais.
Educación superior, interculturalidad y jóvenes indígenas en Michoacán: Un estudio diagnóstico sobre los factores que influyen en la vida universitaria
Authors: Chavez Gonzalez Monica Lizbeth , Vargas Silva Alethia Danae , Perez Cardales Yeymy Josefina , Dimas Huacuz Bertha
Published: July 2022

Este artículo discute las expectativas y dificultades sobre el ingreso y permanencia en la educación superior que perciben jóvenes indígenas de cuatro comunidades purépecha del estado de Michoacán, México. Se hizo una investigación cualitativa en la que se aplicaron treinta entrevistas semiestructuradas, así como cuatro grupos focales con jóvenes estudiantes de bachillerato. También se aplicaron ocho entrevistas semiestructuradas a profesores y líderes comunitarios. Las principales preocupaciones mostradas por los estudiantes son: la situación socioeconómica familiar, así como las tensiones existentes entre las expectativas personales y comunitarias, donde el género aparece como una categoría importante que puede determinar la toma de decisiones. Por otro lado, la educación universitaria se vincula a la movilidad social, a la posibilidad de autonomía en la toma de decisiones y se reconoce la posible angustia y malestar de alejarse de la familia y vivirse de manera diferenciada al salir de la comunidad.
The Implementation of Integrated Project-Based Learning Science Technology Engineering Mathematics on Creative Thinking Skills and Student Cognitive Learning Outcomes in Dynamic Fluid
Authors: Sinurat Herta Astri Yudika , Syaiful Syaiful , Muhammad Damris
Published: July 2022

This study aims to determine the effect of implementing STEM-integrated PJBL on students' creative thinking skills and cognitive learning outcomes. This research is quasi-experimental with a two-group pretest-posttest design. The research population is all grade 11th IPA SMAN 3 Bungo students, and the sample was determined by random sampling. Three projects conducted by the students were water pump free energy, fountain free energy, and air bubble generator. Two instruments of creative thinking test in essay form and multiple-choice for learning outcome test were used. The averages of pretest results of creative thinking and learning outcomes were 27.97 and 30.00 for the experiment class and 30.16 and 30.31 for the control, respectively. This shows that initial student ability in both the creative thinking skill and learning outcome of both types are level. STEM integrated PJBL was then used in the experiment class, and a conventional learning strategy was used for the control class. The average posttest results indicate that the student creative thinking skill of the STEM integrated PJBL class (82.81) is significantly higher than that of the control (36.72). Contrast with the posttest learning outcome showed no difference. These results show that the students actively engaged with the projects in the STEM integrated PJBL class improved their creative thinking skills significantly compared to the control class. This research's main finding is that implementing the STEM-integrated PJBL effectively enhances students' creative thinking skills. Manova analysis shows the students of the experiment class scored 76% in high and 63% in medium categories for both the creative thinking skills and learning outcome, respectively.
The Development of Educational Aids for Restitution Coefficient Experiment Using Microcontroller
Authors: Indrasari Widyaningrum , Budi Agus Setyo , Fadilla Dias Prima
Published: July 2022

This study aims to produce a product in the form of high school physics teaching aids for collision materials. The aids developed consist of Arduino as the central controller, photodiode sensor, and infrared sensor as ball motion detector mounted on the side of the tube track as high as 100 cm. The aids can record the time and altitude automatically on the bouncing ball. The research method used is R&D development research with the ADDIE model, which includes five stages, analysis, design, development, implementation, and evaluation. The variables used are variations in the type of ball and the pedestal type. Three types of balls are used: ping pong, golf, and tennis. The base types are ceramic floor, stainless steel, and acrylic. The ball bounce is an elastic collision partly because it has a restitution coefficient value of 0 < e < 1. This experiment is done by ignoring air resistance and tracking friction. Students can make observations with the help of worksheets, which were also developed into the one-unit package. Through the validation test phase, the product has the worksheets get a value of 91% and the teaching aids 81%, which means that the worksheets and teaching aids are suitable for teaching materials to support learning physics.
The Implementation and Effect of Problem-Based Learning Based on Local Wisdom Toward Students' Communication and Critical Thinking Ability on Temperature and Heat Material
Authors: Suci Suci Kartika , Muhaimin Muhaimin , Zurweni Zurweni
Published: July 2022

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Local Infiltration Analgesia Versus Interscalene Block for Pain Management Following Shoulder Arthroplasty
Authors: Ewing Michael , Huff Haley , Heil Sally , Borsheski Robert R. , Smith Matthew J. , Kim H. Mike
Published: July 2022

Background:

While providing effective analgesia following shoulder arthroplasty, an interscalene block has known complications. Local infiltration analgesia (LIA) using ropivacaine has been successfully employed in other joint arthroplasties, but its efficacy in shoulder arthroplasty has not been studied extensively. The purpose of this study was to compare pain and opioid consumption between LIA and an interscalene block following shoulder arthroplasty.

Methods:

Patients undergoing primary shoulder arthroplasty were prospectively randomized into 2 groups: the block group received an interscalene block using liposomal bupivacaine, and the injection group received an LIA injection intraoperatively. The LIA injection included ropivacaine, epinephrine, ketorolac, and normal saline solution. Postoperative visual analog scale pain scores, opioid consumption in morphine milligram equivalents, and complications were compared between the groups. The mean pain scores during the first 24 hours postoperatively were used to test noninferiority of LIA compared with an interscalene block.

Results:

The study included 74 patients (52 men and 22 women with a mean age of 69 years; 37 were in the injection group and 37 in the block group). There was no significant difference between the groups with respect to pain scores at any postoperative time points (p > 0.05), except for the 8-hour time point, when the injection group had a significantly higher pain score than the block group (p = 0.01). There was no significant difference in opioid consumption between the groups at any time points postoperatively (p > 0.05). The amount of intraoperative opioid consumption was significantly higher in the injection group (p < 0.001). In noninferiority testing for the mean pain scores during the first 24 hours, the injection group was found to be noninferior to the block group. One patient in the block group developed transient phrenic nerve palsy. One patient in the injection group developed dislocation after reverse arthroplasty related to noncompliance. The mean procedure hospital charge was $1,718 for an interscalene block and $157 for LIA.

Conclusions:

LIA and an interscalene block provided similar analgesia during the first 24 hours after primary shoulder arthroplasty. LIA was associated with worse pain at 8 hours postoperatively and more intraoperative opioid consumption but was also substantially less costly.

Level of Evidence:

Therapeutic Level I. See Instructions for Authors for a complete description of levels of evidence.
Socio-economic and Household Characteristics Associated with Work-Family Conflict among Female Primary School Teachers in Enugu State, Nigeria
Authors: Nnubia Uju , Ibeanu Vivienne , Okechukwu Franca
Published: July 2022

This study focused on the socio-economic and household characteristics associated with work-family conflict among female primary school teachers in Enugu state, Nigeria. Cross-sectional and correlational study design were used to collect data from 2428 female primary school teachers in Enugu state, Nigeria. Structured questionnaire was used to obtain data on socio-economic and household characteristics, while Work and Family Conflict Scale was used to assess work-family conflict in the dimensions of work to family, family to work and overall work and family interference. Analyses were performed using IBM-SPSS version 23 software. Descriptive data were presented as frequencies and percentages, while Chi square was used to test the hypotheses at p < 0.05. Result showed that 23% of the respondents experienced work-family conflict with higher rate (29.9%) of work to family conflict than 25.1% of family to work conflict.  Higher salary, urban location, living in ≥ 2-bedroom apartment and using communal toilet and bathroom at home were socio-economic factors significantly (p < 0.05) associated with increase in all the dimensions of work-family conflict. On the other hand, household characteristics associated with higher work-family conflict include; having dependent children, age of oldest child > 12 years old, caring for chronically ill family members, and uneasy accessibility of household water supply. Caring for the elderly and having house helps were associated with increased work to family conflict while household size was not found a factor in any dimension of work-family conflict.
3D modeling of the aircraft air conditioning system
Authors: Boev A. F. , Karpov I. V. , Raspopina V. B.
Published: July 2022

The study aim was to develop a 3D model representing the aircraft air conditioning system with the purpose of performing a numerical experiment in an automated environment of engineering analysis. The completeness of this model was associated with the required result of the numerical experiment. During the experiment, we simulated conditions for the flow of aerodynamic processes in the vicinity of the louvre integrated into the fuselage skin at the point of communication between the air conditioning system and the external environment. Of particular interest was that part of the air conditioning system, which directly affects the louvre strength. The Siemens NX computer-aided design system was used to form a digital copy of the original. The toolkit of this system allows high-precision geometric models to be designed. As a result, a 3D-model was obtained applicable to simulate external and internal aerodynamical processes in the digital environment of engineering calculations for evaluating the strength parameters of the studied part. This model is a combination of geometric objects formed by a set of assembly units. In particular, such elements of the air conditioning system as the cooling turbine, radiator, and valve, are considered. In order to recreate the complex geometry of the original assembly parts of these units, an algorithm for selecting and performing typical operations of the Siemens NX system was developed and optimized for constructing correct 3D models. The constructed 3D model of the aircraft air conditioning system can be used when simulating external and internal aerodynamical processes affecting the louvre strength in the digital environment of engineering calculations. The proposed model allows users to study the structure of aircraft air conditioning systems.
Percolation leaching of clay mixed copper ores
Authors: Karimova L. M. , Kairalapov Y. T.
Published: July 2022

The present work addresses the problem of improving the percolation properties of heap leaching piles of clay, slime-oxidised and mixed ores. These ores are prone to colmatation, which hinders percolation of the solution through the ore layer. Laboratory tests on percolation leaching were carried out using a 2 m column having an internal diameter of 190 mm, loaded with 89.42 kg of ore material having a grain size of -55+0 mm. In order to eliminate colmatation, the ore layer was divided into two equal parts by a drainage layer of polystyrene foam. The research object was ore material extracted from the northern Nurkazgan deposit (Karaganda region, Republic of Kazakhstan), in which copper is present in the form of sulphide (53.48%) and oxidised minerals (46.52%), including 23.5% of chrysocolla. The mineral composition of a test sample determined by optical and electron microscopy, X-ray diffraction, local X-ray spectral, X-ray fluorescence and inductively coupled plasma mass spectrometry was characterised by 93.78% of rock-forming minerals, 53.23% of which comprised layered silicates, namely, mica, chlorite and kaolinite. Ore mineralisation was characterised by both sulphide (copper sulphides, pyrite) and oxide (malachite, iron hydroxides and manganese oxides) phases. The content of easy-sliming minerals equalled 56.30%. Prior to leaching, moisture saturation during the period of one day was carried out. The ore was top irrigated with a solution of sulphuric acid having a concentration of 60 g/dm3. Pregnant solutions were processed following a sorption method (sorption/desorption–electrolysis). The copper extraction into the solution yielded 60.04% with a sulphuric acid consumption of 50.0 kg/t ore at an average irrigation rate of 10.58 dm3/(m2h) or 0.1058 dm/h per clear opening. Therefore, heap leaching of ores at a layer height of lower than 1 m can be performed following the "leaching–extraction/re-extraction or sorption/desorption–electrolysis" scheme.
Combined ground-fault relay protection in 6–10 kV power grids
Authors: Dmitrichenko V. I. , Ni D. A. , Dzhetpisov M. A. , Baurzhan B.
Published: July 2022

In the present work, engineering decisions for combined ground-fault relay protection in 6–10 kV power grids are addressed. For objects in electrical grids having a voltage of 6–10 kV, simple relay protection was used: overcurrent protection and current cutoff. The most common algorithms for single phase-to-earth fault relay protection were analysed and compared. The modelling allowed a scheme for automatic transfer switch to be designed. Operation algorithms of relay protection and automatics were established, considering the properties of an electrical grids section and the characteristics of possible operating conditions. In 6–10 kV electrical grids, an increase in the damage rate of cable lines with outdated thinned insulation was revealed. It was determined that long-term grid operation under a single phase-to-earth fault should be avoided since double earth faults may occur due to an increase in the voltage of healthy phases relative to earth by √3 times. The calculations performed to evaluate selectivity and sensitivity of the current protection of selective zero-sequence showed limited application (due to the insufficient sensitivity) of such protection from single phase-to-earth fault in some cases. The advantages of circuit designs, which use electromagnetic and inductive relays as protection fault detectors, and advanced compact elements in the form of microcircuits with electronic interconnection as logical elements, were investigated. It is established that the proposed solutions can be used by energy providers to increase the reliability and fail-safety of 6–10 kV distribution networks with the minimum capital expenditures to relaying systems. The presented analysis of systems and devices for phase-to-earth fault relay protection showed that power grids having isolated neutrals are the most problematic in terms of maintenance. Simplified circuit designs for combined protection circuits can be used for facilitating the maintenance of relaying devices and automatics due to their openness.
Operation of a photovoltaic installation in the North under various cloudiness conditions
Authors: Mestnikov N. P. , Vasilyev P. F. , Davydov G. I. , Khoyutanov A. M. , Alzakkar A. M.-N.
Published: July 2022

This study investigates the effect produced by various types of cloudiness on the functioning of a photovoltaic system in the central part of the Republic of Sakha (Yakutia). The electric power efficiency of the photovoltaic system under various cloudiness conditions was assessed using graphical interpretations, measuring and recording devices, as well as a description of the procedure for conducting experimental work. The average indicators of a decrease in the electric power efficiency of the photovoltaic system were determined using patterns for a certain type of cloudiness. A specific cloudiness type was identified by performing measurements and calculating illumination ranges, taking boundary conditions into account. These studies were carried out during the summer period of 2021 using the facilities of the mobile test site of the V.P. Larionov Institute of the Physical-Technical Problems of the North of Siberian Branch of the Russian Academy of Sciences located in the central part of the Republic of Sakha (Yakutia). Control parameters of alterations in the generating capacity of the photovoltaic system were obtained for 10 types of cloudiness. The obtained parameters can be used when modeling operational processes and performing engineering calculations of the operating modes for solar power plants. According to the results, during the operation of photovoltaic systems under various types of cloudiness, the decrease in the generating capacity of the installation can vary within 8–95% relative to the generating capacity indicator under clear weather. The obtained indicators of alterations in the generating capacity of a photovoltaic system under various cloudiness conditions can be applied for developing a methodology for assessing the effect of cloudiness and its types on the carrying capacity of solar beams falling on the photovoltaic panel surface, as well as to more accurately determine the energy potential of solar generation in a certain area.
A classification of energy forms according to the levels of organization of matter
Authors: Papin V. V. , Efimov N. N. , Dyakonov E. M. , Bezuglov R. V. , Dobrydnev D. V. , Shmakov А. S.
Published: July 2022

The study investigates mechanical, thermal, chemical, electromagnetic, and nuclear types of energy from the standpoint of organization of matter in order to establish a connection between them. In this regard, a calculation and comparison of the energy potentials for various levels of matter organization were performed. For mechanical energy, the potential energy and the energy of a steel disk at a rotation frequency of 100,000 rpm were considered. The potential of thermal energy was discussed using the example of a steel sample heated from 20 to 1,400C. For chemical energy, the most common combustible element in technology – carbon – was considered. The energy potential of electromagnetic energy was estimated by determining the total charge of all electrons in 1 kg of iron. For nuclear energy, a calculation of the energy released during the decay of 1 kg of U235 was carried out. A dependence of the energy potential degree on the level of matter organization was established. The possibility of using the energy potential of the next level of matter organization was considered. Patterns of the levels of matter organization were revealed. Despite the fundamental nature of the material presented in this article, it is aimed at a specific practical application in a device developed as part of a doctoral dissertation by one of the authors on the topic “Cogeneration thermal and power complex combining the principles of energy transformation”. A classification of energy forms in accordance with the levels of matter organization was carried out in the framework of identifying the general principles and patterns of using low-potential sources of various energy forms. This classification allows a new thermal transformer and a thermal and power complex to be created. The initial theoretical studies carried out by the authors will subsequently form a basis for the creation of various energy transformers capable of operating with several types of energy in one device.
Recycling of waste of coal enrichment and inter-shale clay used for producing ceramic bricks
Authors: Abdrakhimov V. Z.
Published: July 2022

The research purpose is to produce ceramic bricks using intershale clay as a clay binder and coal preparation waste as a lean and burnable additive without the use of traditional raw materials. According to the environmental monitoring of segments of the fuel and energy industry, including the adjacent territories, the level of environmental pollution was high even in specially protected areas. Efficient disposal of largetonnage fuel and energy waste is one of the urgent environmental problems. The industry that produces ceramic materials for the construction industry has unlimited possibilities for using large-tonnage waste. Since natural raw materials are depleted, the production of ceramic bricks requires the use of waste coal and intershale clay. The costs of geological exploration, construction and operation of quarries are excluded, signifi cant land plots are freed from the impact of negative technogenic factors. The use of interslate clay and coal preparation waste in the production of ceramic bricks makes it possible to obtain products with thermal conductivity and density, less than 0.250 W/(m ºС) and less than 1300 kg/m3, respectively. The use of largetonnage waste from the fuel and energy industry contributes to the environmental protection and expansion of the raw material base of building materials.
"Safe City" hardware and software complex and its security monitoring system in Irkutsk region
Authors: Belykh L. I. , Poley N. Yu.
Published: July 2022

The problem of public and environmental danger to the population in Russian cities and an increase in the number of natural and man-made emergencies require the development of automated information monitoring systems as an important component of safety insurance. The purpose of the study is to describe the "Safe City" hardware and software complex and its monitoring system used for ensuring public safety in Irkutsk region. Current problems and statistics on emergency situations of natural and man-made origin in Irkutsk region are analyzed. The relevance of the use of modern safety monitoring and warning systems has been proved. Federal and regional regulatory documents, action plans for the implementation of the "Safe City" agribusiness system in Irkutsk region are considered. The stages of infrastructure development and program implementation results are analyzed. The results of the technical support of a system for monitoring public safety and the state of the urban and natural territories of the region are described. Recommendations aimed to solve the existing problems of implementing the "Safe City" agribusiness system in Irkutsk region are provided.
Life-cycle assessment for municipal waste management systems
Authors: Starostina V. Yu. , Christensen T. H.
Published: July 2022

One of the important tasks of the environmental policy of the Russian Federation is to implement an integrated regional waste management system through the active involvement of production and consumption waste in the economic turnover, the use of environmentally sound recycling methods, the solution of environmental problems related to waste management and resource conservation. Environmental assessment of the existing municipal waste management system is carried out by analyzing the environmental impact and alternative waste management scenarios in order to develop an integrated waste management system for Irkutsk region. Modelling of production and consumption waste flows and their potential impact on the environment was performed. The method of material flow analysis using STAN software was used to estimate the fractional composition of waste. The method of life cycle assessment (LCA) was used to determine the environmental indicators, using the EASETECH software package, which allows for creating various scenarios of environmental impacts, comparing them and choosing the most optimal and environmentally safe one. The modelling of alternative future waste management scenarios for Irkutsk Region showed that all alternatives can improve the current waste management system, which primarily involves landfilling in an uncontrolled landfill without environmental measures. Construction of a new landfill with gas disposal and leachate treatment is a significant improvement, and recycling of secondary raw materials can reduce the environmental pressure. From an environmental point of view, the current waste disposal system is not efficient. Uncontrolled landfill is the main impact on global warming. Although a new landfill could significantly reduce this impact, it is worth reconsidering the waste management systems paying more attention to recycling rather than to landfilling.
Assessment of occupational risks For Vodokanal sewer treatment facilities workers (Irkutsk)
Authors: Molchanova T. M.
Published: July 2022

The labor protection is based on two principles - preventing emergencies or accidents (including microtraumas or microdamage) and minimizing harm to the worker’s health. These principles are implemented through the occupational risk assessment procedure. With a competent approach and a methodology for calculating occupational risks, this procedure becomes a powerful tool in ensuring the safety of workers. The study assessed the occupational risk for Vodokanal treatment facilities workers (Irkutsk) using and comparing the results of different approaches: questionnaires, scoring, the software package "Labor Protection". According to the calculations and the results obtained, it was concluded that each of the methods allows for assessing occupational risks and developing measures to reduce them. These methods for assessing professional risks can be used by enterprises taking into account the number of staff units, the nature of activities and the complexity of operations performed.
Treatability of biodiesel wastewaters by using KMnO4 and KMnO4/O3 processes and kinetic analysis
Authors: Tanatti N. Pınar
Published: July 2022

This study aims to investigate the treatability of electrocoagulated biodiesel wastewater (ECBD) by KMnO4 and KMnO4/O3 processes. The ECBD removal efficiencies of both KMnO4/O3 and KMnO4 methods were compared, and the COD and MeOH removal efficiencies with the KMnO4/O3 process gave better results than the KMnO4 process. For the ECBD removal efficiencies, the experimental parameters including pH, KMnO4 dose, O3 dose and reaction time were optimized by changing one parameter at a time. As a result of 6 h of KMnO4 oxidation, 91.74% of COD and 95.93% of MeOH removal was achieved under the optimum conditions. However, the COD and MeOH removal efficiencies have been obtained under optimum conditions for KMnO4/O3 as 97.79% and 98.30%, respectively. The second-order kinetic model has been found to be the most suitable model for both processes and the R2 has been found as 0.999 and 0.999 for KMnO4 and KMnO4/O3, respectively. The reaction k has also been calculated as 6 × 10−5 L·mg−1·min−1 and 1.63 × 10−4 L·mg−1·min−1 for COD and MeOH in KMnO4 oxidation, respectively. Furthermore, the k has also been calculated as 6 × 10−5 L·mg−1·min−1 and 1.6 × 10−4 L·mg−1·min−1 for COD and MeOH in KMnO4/O3 oxidation, respectively.