bluuebunny/crossref_metadata_2025 huggingface dataset:
Factors affecting the development of conflict situations among medical workers. Possibility of warning and conflict resolution
Authors:   State Budgetary Healthcare Institution of Moscow «City Clinical Hospital named after S. P. Botkin» of the Department of Healthcare of the City of Moscow, Moscow, Russia, Ekimova N. V. , Baidulina A. A. ,   Federal State Budgetary Educational Institution of Higher Education «Samara State Medical University » of the Ministry of Healthcare of the Russian Federation
Published: October 2024

Conflicts in medical organizations are one of the important factors determining the quality of medical care. Research and development of opportunities for conflict resolution and management contributes to increasing the efficiency of the organization as a whole and has a positive effect on the quality of care provided. Target. Research of problems and search for possible ways to optimize management activities to prevent and resolve conflicts in a medical organization. Results. The level of satisfaction of health workers’ needs was analyzed, preferred conflict resolution strategies were identified, the impact of conflicts on the quality of health workers’ work was analyzed, the role of the head of the nursing service in conflict management and ways to improve conflict management were determined. Conclusion. Conflict situations occur in any area of activity of a medical organization. When resolving conflict situations, both managers and subordinates need proven procedures for interaction in conflict. Correct and prompt conflict resolution will minimize the negative consequences of conflicts.
Features of epidemic risks in the work of the endoscopic service of the pulmonological center
Authors:   Samara City Hospital № 4, Samara, Russia, Shteiner M. L. ,   Samara State Medical University of the Ministry of Health of the Russian Federation, Samara, Russia, Biktagirov Yu. I. ,   Samara State Medical University of the Ministry of Health of the Russian Federation, Samara, Russia, Zhestkov A. V. ,   Samara State Medical University of the Ministry of Health of the Russian Federation, Samara, Russia, Babanov S. A. ,   Samara State Medical University of the Ministry of Health of the Russian Federation, Samara, Russia
Published: October 2024

Work in the context of the COVID-19 pandemic has shown that all medical activities should be aimed at preventing infectious risks, the presence of which often leads to the development of emergency situations. The purpose of this work was to analyze the frequency of epidemic risks in the work of the endoscopic service of the pulmonological center. The recorded epidemic risks during endoscopic examinations in the endoscopic office of the Samara City Hospital No. 4 (on the basis of which the City Pulmonological Center is deployed) for the period from 06/10/2022 have been analyzed. by 05/19/2023 Endoscopic examinations were performed both in the endoscopic office of the hospital and in the intensive care unit. During the reporting period, 1,903 endoscopic examinations (100 %) were performed, including 1,479 bronchoscopy (77.7 %) and 424 esophagogastroduodenoscopy (EGDS) (22.3 %). A total of 273 cases of endoscopic interventions associated with epidemic risks were identified, which amounted to 14.32 % of the total number of studies. HIV infection was detected in a total of 204 patients, which was 10.7 % per 100 endoscopic examinations performed. The second most common was the risk of hepatitis C virus infection in 99 patients (5.2 %), the third was tuberculosis (32 people, 1.7 %). Thus, the conducted research made it possible to assess the risks of infection of medical personnel during endoscopic examinations, the most significant of which is infection with HIV, hepatitis C virus and tuberculosis pathogens.
Use of new cellular technologies in dental implantation. Clinical case
Authors:   Federal State Budgetary Educational Institution of Higher Education ", Medvedev Yu.A. ,   Ryazan State Medical University named after Academician I.P. Pavlov",   of the Ministry of Health of the Russian Federation, Belov D.I. ,   Federal State Budgetary Educational Institution of Higher Education "Ryazan State Medical University named after Academician I.P. Pavlov" of the Ministry of Health of the Russian Federation
Published: October 2024

Currently, cell technologies are actively used in dentistry, in particular, in dental implantation. This is due to the fact that traditional methods of implantation do not always provide the desired level of effectiveness and longevity of the implant. This review article discusses the use of cell technology in dental implantation. It describes the main methods and advantages of cell technologies, as well as cases of successful practical implementation. Research results show that the use of cell technologies can significantly improve the effectiveness and longevity of dental implantation. In this regard, the scientific search for new methods, means, and their combinations that increase the effectiveness of therapeutic effects on the pathological focus of inflammation, combining maximum safety and high biological activity in relation to body tissues, remains a relevant area of modern dentistry.
THEORETICAL AND METHODOLOGICAL ASPECTS OF TEACHING MASTER’S STUDENTS IN PEDAGOGY AND PSYCHOLOGY OF HIGHER EDUCATION
Authors: KOZYROD O.
Published: October 2024

The article addresses the problem of updating the content of the teaching system of the academic discipline “Pedagogy and Psychology of Higher Education” for students of the second master’s level of higher education in the field of knowledge 01 Education/Pedagogy, in the specialty 011 “Educational, Pedagogical Sciences”. The article focuses on the problem of competence-based training of master’s students for professional pedagogical self-realization in the context of modern realities of educational transformation. The features of teaching the theoretical and methodological components of the discipline have been outlined and practically reasoned as fundamental factors of the future effective professional realization of master’s students in the field of pedagogical professional activity in the speciality and teaching in pre-higher and higher education institutions.
The purpose of the research is to determine the ways to improve the methods of teaching the professional discipline “Pedagogy and Psychology of Higher Education”, to update its content at the master’s level of education, to outline the theoretical and methodological aspects of specialized training of master’s students in the context of achievements of pedagogical science.
Based on the analysis of the educational and methodological complex of the discipline “Pedagogy and Psychology of Higher Education”, which is a component of the educational and professional program “Extracurricular Education” of the second master’s level of higher education, and professional publications on the topic of scientific research, a set of principles of effective organization of the educational process in the credit-module system of training has been formed. The features of self-education of applicants as a priority educational component in the format of implementing the Bologna Process have been clarified. The influence of factors, circumstances, components of the educational and developmental environment on the formation of learning outcomes and students’ mastery of integral competence, which combines the components of the system of professional psychological-pedagogical knowledge, skills and abilities of organizing and implementing the educational process in higher education institutions, has been characterized. The factors of environmental influence on the process of perception and assimilation of the academic discipline program have been specified. The importance of implementing such a comprehensive scientific-pedagogical, psychological and methodological readiness of future master’s students of educational pedagogical sciences for conscious substantive analysis and study of technologies and innovations, modern approaches, ability to forecast future vectors and modern trends in the development of higher education in Ukraine and its effective integration into the European educational space has been noted.
EDUCATIONAL AND CHARITABLE ACTIVITIES OF IOANN MAXIMOVICH 1697-1711: CHERNIHIV PERIOD
Authors: LANIN V.
Published: October 2024

The life and activities of Ioann Maxymovych (1651-1715), a prominent church figure and writer, have repeatedly attracted the attention of researchers. A significant number of investigations are dedicated to his biography and creative works. Almost his entire life was associated with Ukraine. Ioann Maxymovych – educator, church figure, missionary, spiritual writer, Archbishop of Chernihiv and Novgorod-Siversky, Metropolitan of Tobolsk, belongs to the ranks of saints, enlightener of the peoples of Siberia, founder of the first higher education institution on the Left-Bank of Ukraine – Chernihiv Collegium.
The article considers the period of life of Ioann Maximovich from 1697-1711, which falls on the time of his active work at the Chernihiv department. The importance of his own efforts in promoting the development of education and enlightenment was emphasized: the establishment of the Chernigov Collegium; literary and translation activities; funding and maintenance of the library and diocesan typography, etc. The article analyzes the rich experience of educational and charitable activities of Ioann Maksimovich in supporting the formation of the Chernihiv diocese, its spiritual and cultural development at the beginning of the 18th century.
EDUCATIONAL LEADERSHIP IN THE NETHERLANDS: SUBJECT-FUNCTIONAL ANALYSIS
Authors: SAYUK M.
Published: October 2024

The article characterizes educational leadership as one of the basic components of the higher education management system, which is formed by the human management capital of the Netherlands. Legislative educational policies, management documents, reports, as well as scientific research and results of project activities related to strengthening leadership potential in the Netherlands were analyzed. The national and institutional levels of management in the field of higher education are defined. The distribution of functions between national institutions, their features and their place in the national system of higher education of the Netherlands is clarified. The systemic management roles within the higher education institution are characterized.
Reflexiones y propuestas postpandemia para la educación universitariaen ciencias de la salud
Authors: Acosta-Román Mercedes , León-Montoya Gladys Bernardita
Published: October 2024

El impacto de la pandemia COVID–19 en el mundo, fue significativo; sobre todo para el sector de educación, en este caso se abordarán reflexiones y propuestas en la educación universitaria en ciencias de la salud. Teniendo en cuenta, que la mayoría de universidades fueron afectados con los cierres temporales, perjudicando en el aprendizaje a los estudiantes y en el servicio de enseñanza que ofrecen los docentes. Finalmente, la clave está en la formación universitaria de los futuros profesionales de la salud, donde se deberían formar en las asignaturas generales y básicas vivenciando el trabajo en equipo; así mismo sensibilizándolos y concientizándolos, que el éxito de la salud, se inicia en el primer nivel de atención, considerado como los cimientos donde solo sea necesario mirar ese nivel para proyectar la salud de un país.
Especies bacterianas en superficies de ambulancias del servicio de atención de salud móvil, Azogues – Ecuador
Authors: Ochoa Yumbla Cecibel del Carmen , Arteaga Sarmiento Sandra Denisse
Published: October 2024

Introducción: La presencia de microorganismos causantes de enfermedades infecciosas en ambulancias, representa riesgos para la salud pública, afectando a los pacientes,  acompañantes, y al personal paramédico. El objetivo de la presente investigación fue identificar las especies bacterianas en superficies de ambulancias del Servicio de Atención  de Salud Móvil, de la ciudad de Azogues. Materiales y métodos: Estudio cuantitativo, descriptivo y de corte transversal, en el período marzo - abril 2024. Se tomaron 100 muestras  de superficies de cinco ambulancias después de la desinfección. La cual consiste según protocolo establecido: superficies críticas se esterilizan, semicríticas se desinfectan con alto nivel, y no críticas se limpian con alcohol al 70%. Las muestras fueron tomadas en medio de enriquecimiento tioglicolato, debidamente identificado y llevado al laboratorio para el análisis microbiológico. Se incubaron por 24 horas a 37ºC ± 1 oC. Los resultados se analizaron mediante estadística descriptiva. Resultados: Se identificaron 10 especies de bacterias patógenas potenciales y 90 especies de bacterias no patógenas aisladas en la camilla y el collar cervical (30%) que mostraron las proporciones de contaminación más elevada. Klebsiella pneumoniae (50%) fue el microorganismo aislado en mayor porcentaje, seguida de Escherichia coli (20%) y Enterobacter cloacae (20%) y Staphylococcus aureus (10%). Las bacterias no patógenas que se aislaron fueron Bacillus spp (53,3%) y Staphylococcus coagulasa negativa (46,7%). El Staphylococcus aureus fue resistente a la meticilina (MRSA), no se encontraron enterobacterias productoras de BLEE. Las especies bacterianas en las superficies después de la limpieza y antes de la limpieza, demostró una correlación significativa p<0,01. Conclusiones: El estudio reveló la presencia de bacterias patógenas potenciales en las superficies de ambulancias del SASM de Azogues, microorganismos que se asocian con infecciones intrahospitalarias, que podrían poner en riesgo la salud y la vida de los pacientes.
Salud mental positiva, actitud hacia el aprendizaje y satisfacción en la formación de estudiantes de fisioterapia
Authors: Soto-Manrique Jesús Alberto , Garay-Ugaz Eduardo Martín , Horna-Zevallos Beatriz , Velásquez Vásquez José Luis , Huayta-Franco Yolanda Josefina
Published: October 2024

La salud mental y las actitudes hacia el aprendizaje son factores clave en el desarrollo educativo de los estudiantes, especialmente en disciplinas exigentes como la f isioterapia. Esta investigación tiene como objetivo analizar la relación entre la salud mental positiva, las actitudes hacia el aprendizaje y la satisfacción con la formación práctica en estudiantes de fisioterapia de una universidad pública. Se utiliza un diseño no experimental y transversal, aplicando un enfoque cuantitativo que incluye la prueba de Kolmogorov-Smirnov, así como el análisis de valores de p (p<0.05) y la prueba de razón de verosimilitud. La hipótesis planteada sugiere que una salud mental positiva y actitudes favorables hacia el aprendizaje se asocian positivamente con una mayor satisfacción en la formación práctica. Los resultados indican que el 50% de los estudiantes presenta niveles altos de salud mental positiva, el 79.6% exhibe actitudes positivas hacia el aprendizaje y el 62.1% manifiesta una alta satisfacción con la formación práctica. La prueba de Kolmogorov-Smirnov confirma que los datos no siguen una distribución normal. Los coeficientes del modelo son significativos (p><0.05), lo que indica la relevancia tanto de la variable independiente como de la dependiente y sus dimensiones. Además, la prueba de razón de verosimilitud revela una alta significancia (p = 0,000), respaldando la aceptación de la hipótesis. Asimismo, los valores de Pearson y las desviaciones también se muestran significativos (p >< 0.05). En conclusión, la salud mental positiva y las actitudes hacia el aprendizaje tienen un efecto significativo en el rendimiento académico de los estudiantes.
Percepción del estrés laboral del profesional de enfermería, área de consulta externa
Authors: Hernández Baquero Deysi Marilú , Diez Chávez Andrea Pierina
Published: October 2024

Las enfermeras se dedican al cuidado integral de pacientes de todas las edades y a la prevención y promoción de la salud. Ellas se encuentran constantemente sometidas a niveles elevados de estrés. La Organización Mundial de Salud define el estrés como el conjunto de reacciones fisiológicas que preparan el organismo para la acción. El individuo sufre diferentes alteraciones en su estado físico, mental o emocional. Objetivo: Comprender la percepción del personal de enfermería, sobre el estrés laboral, en la atención asistencial del área de consulta externa del Centro Clínico Quirúrgico IESS Sangolquí correspondiente al año 2023. Materiales y métodos: Estudio con enfoque cualitativo, que pretende comprender la realidad social desde la perspectiva de los profesionales de enfermería, utilizando un abordaje fenomenológico. Se utilizó el diseño metodológico de Amadeo Giorgi, para describir, comprender y articular las experiencias de los profesionales en 4 fases. Resultados: El número de informantes fue de 15 enfermeras, 100% de sexo femenino. Se logró identificar 4 categorías, 10 subcategorías y 20 unidades de significado. En las entrevistas realizadas se observó el agotamiento emocional, presión en el entorno laboral, actitudes negativas, disminución en el rendimiento de sus actividades, desmotivación y la saturación f ísica, mental del profesional, lo que puede generar mayor probabilidad de padecer enfermedades. Conclusiones: Las fuentes de estrés proviene de múltiplos ámbitos como: físicos, psicológicos, organizacionales, individuales, siendo necesario una prevención más especializada y concreta para el personal de enfermería, así como estrategias de manejo del estrés en los centros hospitalarios.
Inactivación con fluoruro diamino de plata de caries cavitadas en niños con déficit de hierro
Authors: Mamani-Cori Vilma , Calcina-Asillo Talia Paola , Torres-Aguilar Dania Merari , Quispe-Quispe Betsy , Quispe-Maquera Nelly Beatriz , Villanueva-Alvaro Naysha Sharon
Published: October 2024

La aparición de caries a edades tempranas es un gran problema de salud pública a nivel mundial y un enfoque de mínima intervención mediante terapias no invasivas con fluoruros de alta concentración sería clave para tratar estas lesiones. El objetivo del estudio es evaluar la inactivación con fluoruro diamino de plata de las lesiones de caries cavitadas en niños con deficiencia de hierro. Este estudio es enfoque cuantitativo, tipo longitudinal y diseño cuasi-experimental; la muestra para la comparación de promedios en un grupo fue de 102 niños con 717 lesiones de caries activa, no obstante, a los 3 meses de seguimiento de los casos se tuvo una pérdida de 18 niños con 92 lesiones de caries cavitadas activa, quedando como muestra final 84 niños con 625 lesiones de caries activa; el cuasi-experimento consistió en aplicar fluoruro diamino de plata sobre las lesiones de caries cavitadas activas, evaluadas mediante el Sistema Internacional para el Diagnóstico y Detección de Caries; los datos fueron analizados con la prueba t-Student para muestras relacionadas. Resultado: A nivel del esmalte dental, se evidenció un incremento estadísticamente significativo en la remineralización (p=<0,001**). Mientras que, a nivel de la dentina se notó una disminución estadísticamente significativa en la sensibilidad al frio (p=<0,001**) y un incremento significativo en la ausencia de la sensibilidad a la percusión (p=<0,001**). Conclusión: En el seguimiento a los tres meses de las lesiones de caries cavitadas activas, se observó una disminución en el número de lesiones, pero, esta reducción no resultó ser estadísticamente significativa.
The Occurrence of Senescence in the Arteriovenous Fistula in the Rat
Authors: Nath Karl A. , Juncos Luis A. , Singh Raman Deep , Grande Joseph P. , Croatt Anthony J. , Ackerman Allan W. , Kanamori Karina S. , Adams Christopher M. , Tchkonia Tamara , Kirkland James L. , Katusic Zvonimir S.
Published: October 2024

Key Points

The rat arteriovenous fistula (AVF) model exhibits marked upregulation of p16Ink4a and p21Cip1 and multiple markers of senescence.

Fisetin, an established vasoprotective senolytic agent, when administered for 3 weeks, increases AVF blood flow and AVF outward remodeling.

Heme is shown to be a novel prosenescence metabolite, and when chronically administered, it decreases AVF blood flow.

Background

Maturational failure of dialysis arteriovenous fistulas (AVFs) not uncommonly occurs and is of considerable and timely importance. Our prior studies demonstrate that senescence, a phenotypic process that promotes vascular and other diseases, occurs in the murine AVF. In this study, we examined whether senescence also occurs in the rat AVF model and the effect of compounds that inhibit or accelerate senescence.

Methods

The rat AVF was created in the femoral vessels by an end vein-side artery anastomosis. In the AVF, we assessed the expression of critical drivers of senescence, specifically, the cell cycle inhibitors p16Ink4a and p21Cip1, and such indices of a senescence phenotype as senescence-associated β-galactosidase (SA-β-gal) activity, SA-β-gal staining, and a senescence-associated secretory phenotype. We examined the effects of compounds that retard or accelerate senescence on AVF blood flow.

Results

The AVF evinced upregulation of p16Ink4a and p21Cip1 when assessed 3 days after AVF creation. The AVF also demonstrated increased SA-β-gal activity in the artery and vein; staining for SA-β-gal in the AVF artery, anastomosis, and vein; and a prominent senescence-associated secretory phenotype. Fisetin, an established senolytic that is protective in other models of vascular injury, when administered for 3 weeks, increased AVF blood flow and outward remodeling. Hemin, when administered for 3 weeks, decreased AVF blood flow. We demonstrate that hemin is a novel inducer of a senescence phenotype in endothelial cells, as reflected by several senescence indices. However, when administered relatively acutely (for 5 days), hemin increased AVF blood flow by heme oxygenase–dependent mechanisms because the latter was entirely prevented by a competitive inhibitor of heme oxygenase activity.

Conclusions

The rat AVF exhibits senescence within 3 days of its creation. Chronic administration of a senolytic compound (fisetin) increases AVF blood flow, whereas chronic administration of a prosenescence compound (hemin) decreases AVF blood flow.
Risk Score for Predicting Acute Kidney Injury from Contrast-Enhanced Computed Tomography (Pre-Computed Tomography Acute Kidney Injury Score)
Authors: Pattharanitima Pattharawin , Bumrungsong Nutthaphol , Phoompho Bhapita , Tanin Raksina , Anumas Suthiya
Published: October 2024

Key Points

There is a well-established score for predicting contrast-associated AKI (CA-AKI) after coronary angiography, but there remains a paucity of data regarding its prediction after contrast-enhanced computed tomography (CT).

CA-AKI after contrast-enhanced CT risk factors are male sex, admission setting, hemoglobin <10 g/dl, and eGFR.

Pre-CT AKI score, using these factors, predicts CA-AKI risk with an area under the receiver operating characteristic curve of 0.715 and 0.706 for external validation.

Background

The lack of a recognized risk evaluation for contrast-associated AKI (CA-AKI) after contrast-enhanced computed tomography (CECT) makes it challenging to counsel patients before the procedure. This study aims to identify the incidence of CA-AKI after CECT, assess the associated risk factors, and develop and validate a predictive score.

Methods

All adult patients who underwent CECT in 2018–2022 were included in the training cohort, whereas those in 2023 formed the external validation cohort. Exclusions applied to patients with CKD stage 5, recent dialysis, or incomplete data. Multiple logistic regression was used to identify risk factors. The area under the receiver operating characteristic curve was used to evaluate both internal and external validation.

Results

From 21,878 enrolled patients, 6042 and 2463 met the inclusion criteria for the training and validation cohorts with a mean eGFR of 86.0 (26.4) and 81.4 (27.6) ml/min per 1.73 m2, respectively. In the training cohort, 492 patients (8.1%) developed CA-AKI, and 49 (0.8%) required dialysis. Independent risk factors of CA-AKI included male sex, clinical setting, hemoglobin levels of <10 g/dl, and baseline eGFR <90 ml/min per 1.73 m2. The model, using a weighted integer score derived from these factors, exhibited an area under the receiver operating characteristic curve of 0.715 (95% confidence interval, 0.692 to 0.743) in the training cohort and 0.706 (95% confidence interval, 0.663 to 0.748) in the validation cohort.

Conclusions

CECT can lead to CA-AKI in specific populations. The pre-computed tomography AKI risk score for CA-AKI after CECT demonstrated good discriminative power and can be easily applied in clinical practice.
The internationalization of teaching: keys to professional development abroad
Authors: Wang Xia , Palshkova Iryna , Yakymenko Polina , Zabiiaka Iryna , Terenko Olena
Published: October 2024

This article explores the professional development of teachers as subjects of international educational activity. It examines the characteristics of world-class universities that foster such development and promote pedagogical creativity through program and institutional mobility. The study analyzes the significance of the "International Teacher" qualification and highlights the necessity of teacher participation in international integration projects. It also underscores the role of the European Universities Initiative, the Erasmus+ program, and the new strategic framework in fostering teacher professional development within an international context. The article concludes by outlining recommendations, requirements, and strategies for supporting teacher development at institutional, national, regional, and global levels.
تحديد فترات النمو المحابي للفقراء بالجزائر: دراسة تطبيقية
Authors: حميد عبدالله الحرتسي
Published: October 2024

هدف هذا البحث إلى إظهار ما إذا كان النمو الاقتصادي في الجزائر لصالح الفقراء أم لا (أي أنه ضد الفقراء). استخدمنا منهجًا استقرائيًا قائمًا على المقاربة النسبية للتمييز بين الفقر من خلال رسم منحنى نمو الفقر (PGC) استنادًا إلى المسوحات التاريخية للتوزيع في بعض الاقتصاديات العربية المختارة. تؤكد النتائج أن النمو الاقتصادي كان لصالح الفقراء في الجزائر خلال الفترة من 1995 إلى 2005، على الرغم من أننا نظهر أن النمو في اقتصاديات مختارة أخرى غير الجزائر قد استفاد الفقراء من خلال تأثير التقطير. ومع ذلك، تشير الدراسة إلى أنه بشكل عام لم يُعزز النمو الفقر في معظم البلدان العربية المختارة؛ وفي الوقت نفسه، يجب إيلاء مزيد من الاهتمام لعدم المساواة من أجل تخفيف الفقر في العالم العربي.
ملاءمة معايير التقارير المالية الدولية للأسواق الناشئة: حالة المملكة العربية السعودية
Authors: الغامدي سالم علي
Published: October 2024

الغرض الأساسي من هذه الدراسة هو فحص أهمية المعايير الدولية لإعداد التقارير المالية (IFRS) في سوق ناشئ مثل المملكة العربية السعودية، واستكشاف المزايا والعيوب والعقبات المرتبطة بها. نظرًا لأن هذه الدراسة تتبع منهجًا استقرائيًا، تم إجراء 10 مقابلات شبه منظمة لكشف القضايا ذات الصلة، ولتدعيم النتائج، تم توزيع استبيان على ثلاث مجموعات من المشاركين، وهي الأكاديميون في المحاسبة، ومديرو المالية، والمراجعين الخارجيين. تُظهر النتائج أن معظم المشاركين يؤيدون التوافق الفوري مع IFRS، حيث إن ذلك من شأنه تلبية احتياجات كل من مهنة المحاسبة ومستخدمي التقارير المالية في المملكة العربية السعودية بشكل أفضل من المعايير المحاسبية الحالية. يمكن أن تكون هذه النتائج مفيدة للجهات التنظيمية السعودية في جهودها لتطوير مبادئ وسياسات محاسبية تنطبق على جميع الكيانات السعودية وفقًا للمعايير العالمية.
تأثير بعض العوامل الشخصية والموقفية على اتجاهات العاملين في وزارة المواصلات
Authors: خليل عمر , غانم هيثم , عبدالرازق رفعت
Published: October 2024

في الوقت الحاضر، أصبحت تكنولوجيا المعلومات (IT) ضرورية للمؤسسات العامة والخاصة المعاصرة. ومع ذلك، فإن التعرف على الخصائص المدركة لأنظمة المعلومات (IS) المستخدمة، وتأثير هذه الأنظمة على أداء المستخدمين في وظائفهم، والعوامل التي تؤثر على تلك الإدراكات يوفر أساسًا للقرارات والسياسات التي تهدف إلى تحسين فعالية أنظمة المعلومات. استكشفت هذه الدراسة تأثير عدد من الخصائص الفردية على جودة النظام المدركة (SQ)، وجودة المعلومات (IQ)، وجودة خدمة تكنولوجيا المعلومات (SVQ)، والتأثير الفردي للأنظمة (IIM) على أداء المستخدمين الوظيفي في وزارة الاتصالات (MOC) في الكويت. بشكل عام، تشير النتائج إلى أن المستخدمين يحملون مواقف إيجابية منخفضة تجاه SQ وIQ وSVQ وIIM. بالإضافة إلى ذلك، لا يؤثر كل من الجنس والتعليم والمدة في العمل على الخصائص المدركة للأنظمة والتأثير الفردي. ومع ذلك، تُظهر الدراسة أن العمر يؤثر على SVQ؛ والجنسية تؤثر على SVQ وIIM؛ ونوع الوظيفة يؤثر على SVQ؛ ونوع القطاع يؤثر على SQ وIQ وSVQ وIIM. تتم مناقشة هذه النتائج وآثارها بشكل أعمق في الورقة.
العلاقة بين كل من التوجه بالتفاعل مع العميل وتمكينه من المشاركة في تنمية المنتجات الجديدة وبين الأداء الربحي للعميل: دراسة تطبيقية على شركات المنتجات الغذائية في مصر
Authors: رجب جيهان عبدالمنعم
Published: October 2024

أدت التغيرات التي حدثت في الآونة الأخيرة في الأسواق إلى الاهتمام المتزايد بمشاركة العميل في عمليات تطوير المنتجات الجديدة. ونظراً للطبيعة الخاصة التي تميز قطاع الصناعات الغذائية والمتمثلة في طلب العملاء المتزايد لخيارات أكثر صحية، ونكهات فريدة، وسهولة في التعبئة والتغليف، فإن تمكين العملاء من خلال مشاركتهم في عملية تطوير المنتجات الجديدة هو على جانب كبير من الأهمية، كما تعد هذه المشاركة أساسية للحفاظ على رضا العملاء وولائهم، والاستجابة السريعة الدقيقة لحاجاتهم ورغباتهم. قدمت الباحثة في هذا البحث إطاراً لدراسة العلاقة بين التوجه بالتفاعل مع العميل واستجابته. واستخدمت أربعة سيناريوهات افتراضية من تمكين العميل من المشاركة باستخدام التصميم البحثي ٢×٢. وقد أظهرت نتائج البحث جودة النموذج المقترح. وأوصى البحث بضرورة تبني شركات الأغذية إستراتيجية التوجه بالتفاعل مع العميل، وتمكينه من المشاركة عن طريق تقديم الأفكار واختيارها، مما يساعد على نجاح تلك الشركات وتحقيق ميزة تنافسية لها.
أثر الإعلان عن النفقات الرأسمالية على أسعار أسهم الشركات المدرجة في بورصة عمان للأوراق المالية
Authors: الحلاق سعيد سامي , العجلوني محمد محمود , السوالمة أنفال عبدالله
Published: October 2024

هدفت هذه الدراسة إلى اختبار أثر الإعلان عن النفقات الرأسمالية على أسعار الأسهم وأحجام تداولها للشركات الخدمية المدرجة في بورصة عمان للأوراق المالية، وبيان أثر حجم الشركة على العلاقة بين ذلك الإعلان وعائد السهم. شملت الدراسة ٣٠ شركة خدمية مدرجة في بورصة عمان للأوراق المالية خلال الفترة من عام ٢٠٠٥ وحتى العام ٢٠٠٩، إذ هي الفترة التي شملت الأزمة العالمية وأزمة البورصات التي أثرت على حركة الأسهم. ولاختبار فرضيات الدراسة تم تحليل البيانات باستخدام اختبار (T-test)واستخدام المتوسطات الحسابية. وتشير نتائج تحليل اختبار (T-test) إلى عدم وجود علاقة ذات دلالة إحصائية بين الإعلان عن النفقات الرأسمالية وعائد السهم خلال فترة الحدث. وأيضاً عدم وجود علاقة ذات دلالة إحصائية بين الإعلان عن النفقات الرأسمالية وأحجام تداول أسهم الشركات عينة الدراسة. كما أشارت النتائج أيضاً إلى عدم وجود أثر للإعلان عن النفقات الرأسمالية على عوائد الأسهم للشركات الخدمية المدرجة في بورصة عمان باختلاف حجم الشركة. خلصت الدراسة إلى ضرورة تطوير آلية لتساعد في زيادة حجم الإفصاح عن القرارات الاستثمارية التي تهم المستثمرين في السوق.
Health risk assessment of heavy metal exposure from indoor dust: A case study of residential buildings in Isfahan, Iran
Authors: Hammood Makkiyah Abdulhssein , Chamani Atefeh , Sobhanardakani Soheil
Published: October 2024

Background: Heavy metals (HMs) are toxic pollutants whose concentrations in confined spaces might cause severe health impacts. This study aimed to determine the concentration and health risk of As, Cd, Co, Pb, Mn, Ni, and V in indoor household dust in Isfahan during 2022-2023. Methods: Ninety dust samples were collected from 30 sampling homes. After preparation and acid digestion of the samples in the laboratory, the concentrations of the elements were determined using the ICP-OES method and analyzed statistically. Results: Except for Pb, the HMs’ mean concentrations were significantly lower than the permissible limit (P<0.050). The maximum daily exposure through ingestion, inhalation, and dermal contact for children and adults were 66.1 and 79.1 mg/kg/d, respectively, with Pb as the relevant element in both groups. Furthermore, the maximum lifetime daily exposure doses of 8-10×26.1 mg/kg/d belonged to Pb. The maximum non-carcinogenic and carcinogenic risk values through direct ingestion, inhalation, and dermal contact were 4.83×1-10 and 1.40×8-10 for children and 5.23×2-10 and 7.91×9-10 for adults, which were associated with Pb in both groups. Conclusion: The results showed that the HMs content in indoor household dust in Isfahan followed a decreasing trend of Pb>Mn>Ni>V>As>Co>Cd. Moreover, direct ingestion followed by dermal contact and inhalation were the most important exposure pathways to the HMs-contaminated dust for both children and adults.
Exploring the spatial distribution of dissolved heavy metals and health risk assessment of cadmium in groundwater: A case study in Oued M’Zab region, Algeria
Authors: Benhedid Hadjira , Achour Mansour , Bouhoun Mustapha Daddi
Published: October 2024

Background: Heavy metals are one of the most harmful groundwater contaminants due to their toxicity and persistence in the environment. This study aimed to assess the impacts of heavy metals on the quality of groundwater within the M’Zab Valley used for human consumption and irrigation and its potential impact on public health. Methods: In this study, the samples taken from eight phreatic aquifer wells situated along the M’Zab Valley, from upstream to downstream, were analyzed, and chronic daily intake (CDI) of cadmium, hazard quotient (HQ), and target organ risk (TOR) for the kidney were computed for child, infant, and adult age groups. Results: It was revealed that the superficial aquifer water is of poor quality and frequently exceeds the drinking water standards, particularly for Cd, Cr, and Zn, which poses a health risk for inhabitants. The study found that the CDI values for Cd for each age group (infants, children, and adults) were below the safe limit established by the World Health Organization (WHO), but the data reveals that the concentration of the HQ is considerably greater in infants than in children and adult groups, considering that infants have the highest estimated daily intake of Cd and TOR for the kidney. Thus, infants may be exposed to a greater health risk associated with cadmium exposure. Conclusion: According to the results of the present study, continuous monitoring of water quality and treatment measures to reduce elevated pollutant levels that harm human health are strongly advised to preserve and safeguard groundwater quality from various forms of pollution.
Anaerobic co-digestion of landfill leachate and sewage sludge: Determination of the optimal ratio and improvement of digestion by pre-ozonation
Authors: Jamshidinasirmahale Zahra , Yazdanbakhsh Ahmadreza , Masoudinejad Mohamadreza , Alavi Bakhtiarvand Nadali
Published: October 2024

Background: Anaerobic co-digestion (AcoD) of various wastes is a suitable method for the removal of contaminants and biogas production. The first aim of this study was to determine the optimal ratio of landfill leachate (LL) and sewage sludge (SS) for AcoD, and the second one was to evaluate the effect of pre-ozonation of the mixture on AcoD. Methods: The LL and SS samples were taken from landfill sites and municipal wastewater treatment plants (MWTPs), respectively. In the first step, five reactors were used and named R1 (100% SS), R2(100% LL), R3 (15% LL/85% SS), R4 (25% LL/75% SS), and R5 (45% LL/55% SS). Mesophilic anaerobic digestion (AD) was performed on the reactors and the optimal ratio was determined. In the second stage, the optimal mixtures were subjected to an ozonation process before AcoD. Results: The results of the first stage showed that the highest efficiency removal of the total solids (TS), volatile solids (VS), and chemical oxygen demand (COD), and the highest biogas production belonged to R3 digester, containing 15% LL and 85% SS. In the second stage, the results showed that the removal efficiency of COD and VS in the ozonated sample at the dosage of 7.6 gO3 /h were 29.8% and 36.6% higher than the non-ozonated sample, respectively. Furthermore, in the ozonated sample, the biogas yield and the content of methane in the gas mixture were 27% and 9% higher respectively, compared to the non-ozonated sample. Conclusion: According to the results, the appropriate ratio of LL to SS and pre-ozonation of LL/SS mixture have a great impact on the performance of AcoD.
Water quality deterioration modeling in aged distribution mains: A case study in Addis Ababa, Ethiopia
Authors: Dereje Kitila Chali
Published: October 2024

Background: Water quality deterioration is becoming a serious challenge for water utility corporations supplying treated water through the use of a centralized distribution system. After water leaves the treatment plant and enters the distribution system, it is subjected to numerous complex physical, chemical, and biological changes. This study aimed to investigate the major physical factors deteriorating water quality in an aged distribution system. Methods: Deterioration modeling was undertaken using an EPANET computer program. For model calibration processes, data collected from field measurements were used. Descriptive statistics were employed to analyze the data. Water age and residual chlorine were selected parameters to investigate the deterioration level. The identification of major factors posing water quality changes was undertaken by examining distinct physical and operational settings. Results: The maximum water-age variation obtained between two extreme water-use periods was 21.97%. In the same way, the maximum residual chlorine concentration variation obtained was 11.68%. On the contrary, with tested extreme pipe sizes in the study, the maximum water-age variation obtained was only 0.93%. Whereas, the obtained maximum residual chlorine concentration variation between the two extreme pipe sizes was 21.03%. Conclusion: Water use variation poses more water quality degradation than pipe geometry. Water age in aged distribution is rarely influenced by conditions of pipe geometry.
The inert surface contamination of SARS-CoV-2 and the effect of disinfectants in one of the specialized and main responsible hospitals for COVID-19 patients in Ahvaz, Iran
Authors: Talepour Nastaran , Hashempour Yalda , Neisi Niloofar , Ghanbari Mana , Zahedi Amir , Ghaedrahmat Zeinab , Makvandi Manoochehr , Jalilian Shahram , Danyaei Amir , Jaafarzadeh Nematollah , Dargahi Abdollah
Published: October 2024

Background: SARS-CoV-2, the causative agent of the COVID-19 pandemic, spreads through both direct and indirect pathways. Among the latter, surface contamination is a significant concern due to the virus’s prolonged viability on surfaces. There is ongoing discussion over the impact of environmental surface contamination, especially in light of the introduction of novel viral types. The present study aimed to examine the extent of environmental surface contamination across different hospital wards and evaluate the effectiveness of disinfectants in inactivating the virus. Methods: The samples were collected from critical areas in a hospital, both pre-disinfection (n=40) and post-disinfection (n=17), using reverse transcription-polymerase chain reaction (RT-PCR) to detect SARS-CoV-2. Results: The findings indisputably confirm the presence of SARS-CoV-2 on swab samples from frequently-touched surfaces. Notably, 10 samples were virus-positive before disinfection, highlighting persistent viral contamination in vital hospital zones. Conclusion: This study underscores the critical role of environmental surface contamination in SARSCoV-2 transmission, particularly in healthcare settings. Detecting the virus on frequently-handled surfaces underscores the urgent need for rigorous and frequent surface disinfection. Effective surface disinfection remains a rapid, straightforward, and practical strategy to mitigate virus transmission to healthcare workers and patients. These findings hold significant implications for infection control, particularly amid emerging virus variants. They emphasize the need to maintain stringent hygiene and disinfection practices within healthcare facilities to combat the spread of COVID-19.
Assessment of bioaerosols, PM2.5, and PM10 in liver transplantation operating rooms in Tehran, Iran: Implications for air quality
Authors: Fouladvand Saba , Nozari Majid , Nadafi Kazem , Alimohammadi Mahmood , Khalui Meraj , Hassanvand Mohammad Sadegh , Pourmand Mohammad Reza
Published: October 2024

Background: Research on the relationship between bioaerosols and particulate matter (PM) concentrations is necessary, especially in hospitals where airborne bioaerosols can facilitate disease transmission. This study aimed to investigate the relationship between PM (PM2.5 and PM10) and bioaerosols, as well as the factors influencing them (temperature and humidity), in the air of liver transplant operating rooms (LTOR) at Imam Khomeini Hospital in Tehran. Methods: Bioaerosol samples (32 samples) were collected using the passive sampling method, employing open-door plates containing culture medium, during June and July of 2019. PM samples were obtained concurrently with bioaerosol samples using the GM8803 air quality detector, during four one-hour periods. Simple linear regression analysis was performed to determine the relationship between bioaerosol and PM concentrations. Results: It was revealed that the average concentrations of PM2.5 and PM10 were 17.8 (SD=2.2) and 27.0 (SD=2.6) µg/m3 , respectively. Additionally, the average concentrations of bacterial and fungal bioaerosols were 2132 (SD=837) and 550 (SD=189.4) CFU/m2 .h, respectively. Linear regression analysis demonstrated a strong correlation between bacterial bioaerosols and PM concentrations, whereas the relationship with fungal bioaerosols was relatively weaker. Conclusion: The findings of this study indicate that the indoor air in LTOR exhibits a higher level of microbial contamination than the recommended guidelines for high-risk environments. To improve the air quality in LTOR, it is recommended to implement periodic microbial monitoring, ensure the proper functioning of ventilation systems, and pay attention to their maintenance and operation.
Investigating the release of microplastics from tea bags into tea drinks and human exposure assessment
Authors: Yousefi Ali , Attar Hossein Movahedian , Yousefi Zabihollah
Published: October 2024

Background: The escalating production and utilization of plastics, driven by their distinctive properties, have significantly contributed to environmental pollution. One of these pollutants is microplastic (MP), which is present in many food products, such as tea bags. The primary objective of this study was to investigate the presence and characteristics of MPs in tea bags from five different brands in Iran. Methods: For this study, 30 tea bags from five different brands in Iran were selected for sampling. The unaltered tea bags (with tea) were placed in 100 mL of ultrapure water at a temperature of 95 °C for 5 minutes, representing an alternative approach involving tea bag sampling with tea and without rinsing. Subsequently, the samples were subjected to quantitative analysis using a scanning electron microscope (SEM) and qualitative analysis using a micro-Raman spectrometer. Results: All brands exhibited MP contamination, with an average abundance of 518 459 items per individual tea bag. Fibers were the predominant form of MPs, primarily falling within the 10–50 µm size range. Polymer analysis identified cellulose acetate (CA), nylon, polyethylene terephthalate (PET), and polyethylene (PE) as the prevalent types, with CA and nylon as the most frequent ones. The estimated daily intake (EDI) of MPs was calculated at approximately 17,282 items/kg-BW/day for children consuming 100 ml of tea daily and 14,813 items/kg-BW/day for adults consuming 400 mL of tea daily. Conclusion: This study underscores tea bag consumption as a significant route of MP exposure for humans and the environment, posing potential risks and implications.
The Notes on Slant Helices According to Equiform Frame on Symplectic Space
Authors: Çiçek Çetin Esra
Published: October 2024

In this paper, first of all, we define basic definitions, some characterizations and theorems of symplectic space we calculated equiform frame in 4-dimensional symplectic space. Then, we obtain Frenet vectors and curvatures of a symplectic curve due to equiform frame. We have dealed with the properties of k-type slant helix according to equiform frame. It is seen that there exist k-type slant helices for all cases. In addition, we express some characterizations for k-type slant helix according to equiform frame geometry in symplectic regular curves. Finally, we give an example about symplectic space on graphics with symplectic frame on 4-dimensional symplectic space.
Оценка функционирования детей с острым миелоидным лейкозом с позиции Международной классификации функционирования, ограничений жизнедеятельности и здоровья
Authors: Дорошенко И.Т. , Борисевич М.В. , Захарова Н.А. , Алферова А.И. , Голикова К.В. , Корниенко Е.М.О. , Рудкова Е.В.
Published: October 2024

Целью исследования явилось изучение имеющихся нарушений и затруднений функционирования у 37 детей с острым миелоидным лейкозом с позиции Международной классификации функционирования, ограничения жизнедеятельности и здоровья (МКФ). Это позволило определить, что инвалидность обуславливают имеющиеся нарушения функций системы крови (b430 – категория домена с позиции МКФ) – в 70,3% (ДИ 54,2–82,5) случаев или возникающие сопутствующие нарушения функций пищеварения (b515) – в 24,3% (ДИ 13,4–40,1), функций иммунной системы (b435) – в 10,8% (ДИ 4,3–24,7), функций сохранения массы тела (b530), общих метаболических функций (b540), функций эндокринных желез (b555) – в 8,1% (ДИ 2,8–21,3), которые приводили к таким социальным последствиям, как затруднения в заботе о своем здоровье (d570) – у 75,7% (ДИ 59,9–86,6) детей, проведении досуга (d920) – в 51,4% (ДИ 35,9–66,6) случаев, выполнении повседневного распорядка (d230) – в 43,2% (ДИ 28,7–59,1), вовлечении в школьную жизнь и общественную деятельность (d835) – в 40,5% (ДИ 26,4–56,5).

The purpose of the research was to assess the problems and difficulties in functioning in 37 children with acute myeloid leukemia using the International Classification of Functioning, Disability and Health (ICF), which made it possible to determine that disability is caused by problems of haemotological system functions (b430 – domain category from the ICF) – in 70.3% (CI 54.2–82.5) of cases or emerging concomitant disorders of digestive functions (b515) – in 24.3% (CI 13.4–40.1), immunological system functions (b435) – in 10.8% (CI 4.3–24.7), weight maintenance functions (b530), general metabolic functions (b540), endocrine gland functions (b555) – in 8.1% (CI 2.8–21.3), which led to such social consequences as difficulties of looking after yourself health (d570) – in 75.7% (CI 59.9– 86.6) of children, recreation and leisure (d920) – in 51.4% (CI 35.9–66.6), carrying out daily routine (d230) – in 43.2% (CI 28.7–59.1), involvement in school life and related activities (d835) – in 40.5% (CI 26.4–56.5).