bluuebunny/crossref_metadata_2025 huggingface dataset:
Proposed Protocol for the Implementation of 'Minds on Site': A Mental Health Intervention for Construction Workers
Authors: Parra1 Santiago Otero , Rodríguez-Chica María Paula , Riaño-Casallas Martha Isabel , Palencia-Sánchez Francisco
Published: October 2023

The construction industry has been recognized for its important contribution to national and global economies in terms of employment generation. However, it still leads the world as one of the sectors with the highest number of worker fatalities and work-related injuries. Some 90% of construction workers are men, are unskilled and are characterized by a low level of education, job instability, high work demands, accumulated fatigue, a high prevalence of overweight and obesity, irregular sleep patterns, problematic consumption of alcoholic beverages, smoking and a very high exposure to chemical, physical, biological, and social hazards. The above mentioned, justifies the importance of the following intervention protocol that seeks to have an important impact on the mental health of workers, for this it was imperative to perform a detailed analysis between the association of occupational risk factors and related mental illnesses. Among men, knowledge of mental health is poor, many accept to live passively through their suffering rather than seek help, which is why creative and innovative interventions are needed to overcome existing cultural barriers.The present protocol seeks to propose a group mental health intervention aimed at construction workers in Bogota, Colombia. This is why we proposed multiple group interventions, based on the evidence of reducing the perception of stress, depression and increasing the likelihood of resorting to support tools. To measure the impact of our intervention we will use the sad persons scale and the Stress Perception Scale 14, pre and post intervention. A literature review was performed using Mesh terms and a search algorithm. Subsequently, from the articles resulting from the advanced search, those that allowed characterizing the population and identifying the most prevalent risk behaviors were selected by title and content. Likewise, those that provided clarity on group interventions in the field of mental health were selected. Finally, with the selected articles, a snowball strategy was used to complement additional information of relevance to the research, and thus establish a protocol that favors mental health, with the purpose of evaluating the impact of the intervention by means of the Sad persons scale and the stress perception scale 14.
Changing ourselves: how does personality change relate to well-being and authenticity?
Authors: Sutton Anna
Published: October 2023

Change in personality is viewed in two contrasting ways. Sometimes it is seen as an indicator of psychopathology or inauthenticity, associated with reduced well-being. Yet the ability to change oneself is also viewed as a sign of positive self-development, a process of becoming more authentic, and associated with increased well-being. This meta-analysis sought to compare these two perspectives and determine whether personality change can contribute to a good life. Sixteen independent samples (24,000 participants) were analysed to test the relationships between traits change and authenticity, traits change and well-being, and values change and well-being. Trait change was positively related to authenticity, while values change was associated with increased well-being. Moderator analysis indicated that type of change (over role or time) did not influence the relationship between trait change and authenticity, nor did length of time over which change took place influence the personality change and well-being relationship. Including traits and values allows a more holistic understanding of personality change and demonstrates that personality change is not damaging to living well, having instead a minimally positive association with well-being and authenticity.
The Children and Young People’s Books Lexicon (CYP-LEX): A large-scale lexical database of books read by children and young people in the United Kingdom
Authors: Korochkina Maria , Marelli Marco , Brysbaert Marc , Rastle Kathleen
Published: October 2023

This article introduces CYP-LEX, a large-scale lexical database derived from books popular with children and young people in the United Kingdom. CYP-LEX includes 1,200 books evenly distributed across three age bands (7–9, 10–12, 13+) and comprises over 70 million tokens and over 105,000 types. For each word in each age band, we provide its raw and Zipf-transformed frequencies, all parts-of-speech in which it occurs with raw frequency and lemma for each occurrence, and measures of count-based contextual diversity. Together and individually, the three CYP-LEX age bands contain substantially more words than any other publicly available database of books for primary and secondary school children. Most of these words are very low in frequency, and a substantial proportion of the words in each age band do not occur on British television. Although the three age bands share some very frequent words, they differ substantially regarding words that occur less frequently, and this pattern also holds at the level of individual books. Initial analyses of CYP-LEX illustrate why independent reading constitutes a challenge for children and young people, and they also underscore the importance of reading widely for the development of reading expertise. Overall, CYP-LEX provides unprecedented information into the nature of vocabulary in books that British children aged 7+ read, and is a highly valuable resource for those studying reading and language development.
Assessment of Community Capacities for the Promotion of Well-being in Undergraduate Nursing Students at Pontificia Universidad Javeriana – Sede Bogotá: An Approach from the Directives.
Authors: Castrillo Torres Ever José , Munévar Laura Juliana Coba , Navarro Valentina Camargo , Luna Isabel Socorro Moreno , Palencia-Sánchez Francisco
Published: October 2023

Background: In recent years, the relationship between general well-being and its positive impacts on various dimensions of life has become more profound, which has led different organizations such as Higher Educational Institutions to promote the creation of policies, guidelines, and programs, adjusted to their community capacities, aimed at fostering the wellbeing of their communities. Objectives: This study aimed to evaluate the community capacities addressed for the development of a well-being program targeting undergraduate students at the Nursing School of the Pontificia Universidad Javeriana - Sede Bogotá. Methods: A qualitative and quantitative assessment of community capacities was carried out through the application of The Community Capacity Building Tool, previously translated and adapted, to the members of the Nursing School Board in charge of the activities of the "Medio Universitario" directed to undergraduate students. Results: Four community capabilities are recognized as strengths among the directives surveyed, these include: External Support, Asking Why, Linking with Others, and Sense of Community. A discordance between quantitative and qualitative data was evident in the Participation and Leadership domains, where high scores were assigned to resources not possessed by the department. The Leadership domain, additionally, presented an inter-evaluator discrepancy, a finding suggestive of the lack of consensus on the resources and structures available for the well-being program. Conclusions: It is undeniable that the Nursing School of the Pontificia Universidad Javeriana - Sede Bogotá has promoted the development of interventions aimed at student welfare; however, it is evidente the absence of a structured program as a basis. In this context, the imperative need to develop a meticulous management plan emerges in which responsibilities are defined, resources are recognized, and a control system is established.
Reimagining the Covering Letter: Why, When, and How to Communicate with Journal Editors before Manuscript Submission
Authors: Gump Steven E.
Published: October 2023

Online submission portals for scholarly journal manuscripts regularly include space for a covering letter or its equivalent. But why should that opportunity mark the first contact between author and editor? This article reimagines the submission-accompanying covering letter by exploring the value of earlier outreach and correspondence between authors and editors. For authors planning submissions to journals in the humanities and humanities-adjacent social sciences, especially, this article explains the purpose and practice of initiating contact via query letter after manuscript conceptualization but before manuscript composition. Following a positively received query letter, a covering letter becomes a straightforward letter of transmittal accompanying an anticipated submission that an editor should be predisposed to welcome.
Prevalencia de colonización vaginorrectal por Streptococcus agalactiae en mujeres gestantes atendidas en un hospital de segundo nivel en Honduras
Authors: Alas-Pineda César , Raudales Beatriz M. , Clemencia Bueso Ana , Andino-Castro Belinda , Sevilla-Rivas Digna , Turcios-Ávila Zila , Pavón-Varela Dennis Javier , Romero Reyes Luis Enrique , Úñiga-Girón Luis Z
Published: October 2023

Introducción. Streptococcus agalactiae, conocido actualmente como estreptococo delgrupo B (EGB), es el principal microorganismo que coloniza el tracto genitourinarioen pacientes gestantes, llegando a causar consecuencias graves en el neonato,como sepsis neonatal, neumonía y meningitis. Objetivo. Determinar la prevalenciade EGB en mujeres gestantes del Hospital Nacional Dr. Mario Catarino Rivas, enHonduras. Materiales y métodos. Estudio descriptivo, prospectivo, transversal. Seutilizó un muestreo por conveniencia, se enroló un total de 143 gestantes entre las34 y 40 semanas de gestación atendidas en el servicio de ginecología y obstetriciadel Hospital Nacional Dr. Mario Catarino Rivas, durante enero de 2020 a junio del2021. Los cultivos se prepararon de acuerdo con la metodología recomendada porlos Centers for Disease Control and Prevention, agregándose el agar chromID Strepto B.Se empleó estadística descriptiva para el análisis. Resultados. La edad promedio delas gestantes fue 26 ± 7,4 años. La prevalencia de EGB en la población fue del 3,5%,encontrando 5 casos positivos. Conclusión. La prevalencia de colonización por EGBen mujeres embarazadas es variable y puede no estar asociada a factores de riesgopara ser colonizada, resultando en complicaciones sanitarias neonatales y maternas.Ello pone de manifiesto la necesidad de búsqueda activa de estreptococos del grupoB en las gestantes.
Calidad de vida laboral y riesgo de disfunción sexual en enfermeras
Authors: Andrade-Tasayco Andrea Verónica , Rosales-Bringas Christian Alexander , Pinedo-Torres Isabel
Published: October 2023

Las experiencias y relaciones personales insatisfactorias en el ámbito laboral se asocian a resultados negativos en el aspecto sexual. La disfunción sexual femenina (DSF) es la alteración de cualquiera de las fases del orgasmo. La calidad de vida laboral (CVL) es la percepción del trabajador entre las exigencias del trabajo y las técnicas de afrontamiento. Objetivo. Determinar la asociación entre la calidad de vida laboral y el riesgo de disfunción sexual femenina en enfermeras de un hospital público del Callao, Perú. Método. Estudio observacional, transversal y analítico realizado en enfermeras del Hospital Nacional Daniel Alcides Carrión (HNDAC) de la provincia Constitucional del Callao, Perú. El riesgo de DSF fue medido con la prueba de Rosen. La CVL fue medida con el cuestionario de CVP-35. El análisis estadístico se realizó con el programa STATA versión 15. Se consideró significativo un valor de p<0,05 con un IC de 95%. Resultados. El estudio contó con la participación de 168 enfermeras que respondieron de forma completa. Las dimensiones de CVL asociadas a DSF fueron apoyo directo (p=0,01), motivación intrínseca (p=0,003), la pregunta sobre desconexión de trabajo (p=0,007), el ingreso mensual (p=0,003), el estado civil (p=0,001) y consumo de alcohol (p=0,014). No hubo asociación en el análisis multivariado. Conclusión: En el presente estudio no existió una asociación entre las dimensiones de la calidad de vida laboral y el riesgo de disfunción sexual femenina ajustado por confusores.
Defectos congénitos y exposición prenatal a material particulado en una población colombiana
Authors: Cuadrado-Grisales Leidy Tatiana , Ruiz-Murcia Fabian Andres , Henao-Navarro Leidy Diana , Aristizabal-Zuluaga Beatriz Helena
Published: October 2023

Introducción. La contaminación atmosférica se asocia a eventos obstétricos adversos. Existe evidencia de asociación entre la exposición a niveles elevados de material particulado menor a 10 micras (PM10) y defectos congénitos. Objetivo. Determinar la existencia de asociación entre defectos congénitos y la exposición prenatal de mujeres gestantes a PM10 en una población colombiana. Métodos. Estudio retrospectivo de casos y controles. Se incluyeron casos de madres de recién nacidos con defectos congénitos confirmados posnatalmente y controles sin defectos congénitos. La exposición a emisiones se determinó mediante disgregación temporo-espacial mediante ArcGIS® y georreferenciación mediante gvSIG®, Google Earth® y Google Street View®, usando estimaciones previamente publicadas y validadas para la ciudad. El análisis estadístico se realizó utilizando Jamovi-Stats Open now®. Resultados. Se incluyeron un total de 101 pacientes, correspondiendo a 31 casos y 70 controles. Existió un aumento del riesgo de desarrollar defectos congénitos tras la exposición a emisiones de PM10 superiores a 2,23 Ton/año/250 m2 (OR: 8,17; IC 95%: 1.61 a 41.46; p = 0,011). Conclusiones. Existió relación entre la exposición a niveles elevados de PM10 y aumento en el riesgo de defectos congénitos en la población estudiada. Se sugiere la realización de futuras investigaciones sobre la relación entre contaminación medioambiental y eventos obstétricos adversos.
Fertilización asistida con óvulos donados: indicaciones y resultados
Authors: Chuquillanqui Mendoza Pilar , Escudero Velando Luis Ernesto
Published: October 2023

Las mujeres retrasan cada vez más la maternidad por diferentes motivos, lo queles ocasiona recurrir a tratamientos de fertilización in vitro (FIV) con óvulos propiosu óvulos donados para conseguir embarazo. En los tratamientos de FIV con óvulosdonados se realiza una selección estricta de las donantes, quienes son sometidas aestimulación ovárica con posterior aspiración de los folículos. La edad recomendadapara donar es entre 21 y 34 años. Se recomienda un máximo de 6 donacionespor donante. La receptora es la persona a quien se le realizará la transferenciadel embrión y llevará el embarazo. Las tasas de embarazo con esta técnica dereproducción asistida son altas y las indicaciones más frecuentes son edad maternaavanzada y falla ovárica precoz.
Encefalitis aguda por dengue durante el embarazo
Authors: Reyna-Villasmil Eduardo
Published: October 2023

El dengue es un problema de salud pública. La mayoría de los pacientes desarrollan signos clínicos que van desde enfermedad leve hasta síndrome hemorrágico. Las manifestaciones neurológicas inusuales son raras y cada vez existen más pruebas de neurotropismo. La encefalitis por dengue es el resultado del trastorno multisistémico que ocurre en la infección grave y durante el embarazo puede ser difícil de diagnosticar. Además, es importante considerarla como diagnóstico diferencial en pacientes en zonas endémicas en pacientes con enfermedad febril aguda y síntomas neurológicos. El manejo de la encefalitis por dengue durante el embarazo es un desafío y es necesario realizar todas las pruebas posibles para decidir el manejo óptimo y preciso para evitar complicaciones maternas. Se presenta un caso de encefalitis aguda por dengue durante el embarazo.
Examination of Foreign Students’ Anxiety in Learning Turkish in Terms of Various Variables
Authors: ŞİMŞEK Tuğba
Published: October 2023

The aim of this study is to examine the effect of anxiety level on foreign language success and to examine the level of anxiety in terms of various variables in learning Turkish as a foreign language. Descriptive analysis and measurement by scanning was used. Anxiety levels of students learning Turkish as a foreign language were examined in terms of various variables. "Foreigners' Turkish Learning Anxiety Scale" was applied. In conclusion; Anxiety is an effective factor in learning Turkish as a foreign language. While sufficient level of anxiety facilitates learning, high level of anxiety makes learning difficult. As a new concept, we can call it motivational anxiety. Anxiety levels of students do not differ significantly according to gender, country and time they live. When the anxiety levels of the students learning Turkish as a foreign language are examined according to the variable of the number of languages they know, there is a significant difference in favor of those who speak 4 languages or more. Since the majority of the students are at a moderate level in terms of both academic and self-esteem, it is thought that a moderate level of anxiety will contribute to success.
The Effect of Question Preparation Training Program that Measures Higher Order Thinking Skills on the Self-Efficiency of Science Teachers
Authors: BOLAT Ahmet , KARAMUSTAFAOĞLU Sevilay
Published: October 2023

In this study, the aim was to examine the effect of the question preparation training program that measures higher order thinking skills on the self-efficacy of science teachers. The research is in a pre-experimental design model with quantitative origin pre-test/post-test application. The example of the study comprises of 25 science teachers working in public middle schools in Çorum. “Question Developing Self-Efficacy Scale Measuring High Level Learning Level of Science Teachers” was used as data collection tool. Descriptive analysis, difference analysis and effect size analysis were used in the assessment of the data. The t-test for dependent samples were employed to compare the teachers' self-efficacy before the application and their self-efficacy at the end of the application. With the research, it was confirmed that the applied training program significantly increased teachers' self-efficacy in preparing questions measuring higher order skills. Herewith, multifarious proposals were made, like turning the training program into a book, and arranging the content of the in-service training programs by considering the items with low item averages.
The Mathematics Process in Home Environments of Preschool Children in the COVID-19 Pandemic: Views of Parents
Authors: YILDIZ Ensar , ÖĞÜTCEN Ayşegül , AKMAN Berrin
Published: October 2023

The purpose of this study is to disclose the practices of parents regarding the development of mathematical skills of their preschool children in their home environment during the Covid-19 pandemic. The research uses an explanatory case study as one of the types of case studies included in qualitative research methods. The sample selection of the research uses criterion sampling as one of the purposeful sampling types. In line with this, the study group consisted of 30 parents. The data of the research were collected using the interview technique. The data were obtained by using a semi-structured interview form developed by the researchers. The study concluded that parents perceive early math skills as daily life skills rather than a part of math skills and their knowledge about early math skills is inadequate. In the study, it was observed that during the pandemic period, preschool teachers generally did not make suggestions to support early math skills to parents, while parents used workbooks to support children's early math skills at home during the pandemic period, they made their children do addition and subtraction operations and made them count numbers. Based on the findings obtained at the end of the research, it is recommended to organize supportive training to increase parents' knowledge about early math skills and about methods for teaching these skills.
The Effect of Actionbound Application on Academic Success and Attitude on 6th Grade Field Measurement
Authors: KORKMAZ Ebru
Published: October 2023

This study aims to examine the effects of activities prepared using the Actionbound application on students' academic achievement and mathematical attitude in the field measurement subject in the 6th-grade mathematics course. The study was designed using a quasi-experimental design with a control group from quantitative research methods. The study group of research consists of students studying in two different 6th grades of a secondary school in the central district of Elazığ province in the school year 2022-2023. The achievement averages of the branches in the previous semester were used in forming the experimental and control groups and in ensuring the equivalence of the branches. The research, which was conducted in parallel with the MoNE curriculum, was applied simultaneously to the experimental and control groups. The research, which used parametric testing procedures due to the normal distribution of the data, was analyzed using the SPSS package program. The results show that the digital learning game developed using Actionbound improves performance and attitude, but does not cause a significant difference between the groups. It is recommended to extend the application period of the study and continue the study for one semester.
Involvement of High School Students of General Secondary Education Institutions in Environmental Projects: Theoretical and Methodological Approaches and Practical Implementation
Authors: Dziubenko Olena
Published: October 2023

The article considers certain stages of formation of educational and research skills of high school students of secondary education institutions in the implementation of environmental projects. The purpose is to analyse the specifics of attracting high school students of general secondary education institutions to the implementation of environmental projects. The main methods of research were methods of systematization, statistical processing, analysis, observation, induction, deduction, and synthesis used to solve scientific and methodological problems. Results. It is established that the goal of an environmental project makes it possible to choose a range of tasks that should be implemented by a high school student, namely: the object of research and the method of achieving the final result. In accordance with the set goal, the project objectives are determined. The solution of each task is a stage of research. Tasks determine the content of the study, methods, and results obtained. They can include the formulation of a problem, the identification of new facts, the establishment of new connections, a new formulation of a known problem, original conclusions and recommendations for the implementation of the obtained experimental data. The proposed scheme is a model for conducting research on determining water quality in aquatic ecosystems. The diagram shows three stages of step-by-step research. The first one is aimed at selecting the object of research (the main selection of criteria and objects of research is revealed). The second stage is the selection of methods for conducting the experiment. The criteria for selecting experimental sites are disclosed and, accordingly, identifiers for conducting an experiment and implementing an environmental project are given. The third stage is aimed at analysing the results of the study, formulating appropriate conclusions and planning the next stages of the study. The main stages in the formation of scientific research are considered from the formation of the topic, research tasks to the discussion and formation of conclusions of an environmental project. Conclusions. In the process of implementing environmental projects, which is aimed at search activities, high school students improve their ability to perform mental actions, operate in practice with all the acquired skills and abilities. The implementation of eco-projects develops logical and ecological thinking, forms a scientific and practical style of thinking, intuition, and develops interest in natural science. Scientific literature can’t provide deep and thorough knowledge, practical skills and abilities if the acquired theoretical knowledge is not combined with research activities. During their own observations, high school students are convinced that there are close connections between living organisms and the surrounding component, i.e. the environment.
PECULIARITIES OF EARLY DIAGNOSIS OF PATIENTS WITH HYPERTENSIVE DYSCIRCULATORY ENCEPHALOPATHY AND CONCOMITANT HYPOTHYROIDISM IN POLYCLINIC CONDITIONS
Authors: Kovalenko Olha Ye. , Litvin Olena V.
Published: October 2023

Early diagnosis, timely prevention and treatment of comorbid and polymorbid conditions are extremely relevant in the practice of doctors of outpatient polyclinic institutions. Dyscirculatory encephalopathy is one of the most pressing problems of modern neurology due to its high prevalence. Currently, along with the growth of cerebrovascular diseases, there is an increase in endocrine pathology, especially hypothyroidism.

The aim: Therefore, the goal of our study was to improve the diagnosis of patients with dyscirculatory encephalopathy and concomitant hypothyroidism in conditions of polyclinics.

Materials and methods. A clinical-neurological, neuropsychological, instrumental, and laboratory examination of 97 patients was conducted, including 60 patients with HDE and accompanying hypothyroidism and 37 with hypertensive dyscirculatory encephalopathy (HDE) without hypothyroidism.

Results. According to the results of the study, it was proven that cerebral disorders in patients with HDE have a more pronounced progression in the presence of concomitant hypothyroidism. Patients with concomitant hypothyroidism complained more and more often about tearfulness (p=0.03), vertigo (p=0.01), dizziness (p=0.04). In patients with HDE and accompanying hypothyroidism, the severity of neurological deficits, such as unsteadiness in Romberg's pose, ataxia when walking, missed finger-nose test, mixed type of dermographism, significantly (p<0.05) prevailed over the indicators of patients with HDE without accompanying pathologies of the thyroid gland.

Thus, patients with comorbid pathology (HDE and accompanying hypothyroidism) need more meticulous dispensary supervision, in outpatient settings and close interaction of a neurologist, endocrinologist, therapist and family doctor.

 Conclusions. In patients with hypertensive dyscirculatory encephalopathy and concomitant hypothyroidism, there are cerebrasthenic, vestibulo-ataxic, and mnestic syndromes observed significantly more often (p<0.05),
QUALITY OF LIFE AND PAIN MANAGEMENT IN PATIENTS AFTER GUNSHOT WOUNDS
Authors: Horoshko Vasyl R.
Published: October 2023

Introduction. In 1948, the World Health Organization defined health as not only the absence of disease but also the presence of physical, psychological and social well-being. Quality of life is a somewhat new concept borrowed from sociology, where it is understood as the ability of an individual to function in society in accordance with his or her position and to enjoy it. A number of researchers have studied the quality of life of patients after injuries, but there are very few results in Ukraine. Given the increasing number of patients with gunshot wounds, our study aims to highlight this issue, as it will be of national importance in the long term.

The aim is to study the level of quality of life in patients after gunshot wounds.

Materials and methods. The treatment of 769 patients was analyzed. The level of quality of life was studied using the Chaban quality of life scale (CQLS). The groups were compared by the Mann-Whitney test and the chi-square test.

Results. The CQLS diagnosis indicates that at the time of discharge from inpatient treatment, the quality of life was at a high level (76 points), but then, 1 month after discharge, it decreased to a low level (64 points) and did not change in the following months – 3, 6 and 12 months.

Conclusions. The results of the study indicate that more attention should be paid to the problem of quality of life in patients after gunshot wounds and that we should strive to study this issue and identify new ways to improve the situation. In our opinion, one of the factors that affect the quality of life is the formation of chronic pain, which requires further study.
Le point de vue de l’avocat du justiciable Les occasions manquées de la réforme
Authors: Dal Farra Thierry
Published: October 2023

Si la réforme issue de l’ordonnance n°2022-408 du 23 mars 2022 relative à la responsabilité financière des gestionnaires publics a eu le mérite de rationaliser le contentieux devant les juridictions financières et de mettre un terme à des dispositifs archaïques en matière de responsabilité des comptables publics, elle se caractérise aussi par une série d’occasions manquées par le législateur délégué : de préciser la nature juridique même du contentieux devant les juridictions financières ; d’étendre, au plan organique, la compétence de la nouvelle chambre du contentieux de la Cour des comptes à tous les gestionnaires publics, afin d’éviter une rupture inconstitutionnelle de l’égalité de traitement entre ces derniers ; de clarifier, au plan matériel, certaines composantes des infractions redéfinies de manière volontairement plus restrictive, et de les mettre en cohérence avec les infractions pénales qui peuvent résulter des mêmes faits. Alors que la Cour des comptes aurait pu assez largement absorber tout le contentieux personnel des infractions à la discipline financière et tarir ainsi l’intérêt d’en saisir les juridictions répressives, la réforme laisse toujours à celles-ci un champ d’intervention très ouvert, accentuant même la distorsion entre l’approche du juge pénal et celle du juge financier.
Perancangan Awal Sistem Kontrol Dan Proteksi Reaktor: Studi Kasus Reaktor Dimethylformamide
Authors: Muhammad Pebri Pratama  , Ariyanto Eko , Muhammad Abimas Halimzikri  , Rizanti Fadilah  , Nanda Shafira  , Elsa Wardani  , Gita Sintya  , Ismi Islamiyati Remuso
Published: October 2023

Keselamatan kerja di industri kimia merupakan aspek penting yang perlu diperhatikan untuk mencegah kecelakaan dan memastikan lingkungan kerja yang aman. Penelitian ini bertujuan untuk melakukan perancangan ulang dan merumuskan rekomendasi konkrit yang dapat meningkatkan kondisi kerja yang aman dan mengurangi potensi insiden atau kecelakaan di Reaktor dimethyl formamide (DMF) pada Pabrik Kimia Polytex Chemical Industries. Metode penelitian yang digunakan meliputi studi literatur, observasi langsung, dan analisis data. Hasil penelitian menunjukkan adanya kekurangan dalam sistem keselamatan kerja di reaktor DMF, yang menyebabkan terjadinya kecelakaan pada Reaktor 105. Faktor-faktor penyebab kecelakaan meliputi dekomposisi termal DMF, peningkatan suhu dan tekanan yang tidak terkendali, serta kurangnya sistem proteksi yang memadai. Rekomendasi yang diberikan untuk meningkatkan keselamatan kerja meliputi penggunaan temperature transmitter, pressure transmitter, level transmitter, dan sistem alarm sebagai bagian dari sistem proteksi yang dapat memantau kondisi operasional, mendeteksi kondisi berbahaya, dan memberikan peringatan dini kepada operator. Implikasi penelitian ini adalah perlunya perbaikan dalam perancangan reaktor dan implementasi sistem proteksi yang efektif di industri kimia. Dengan mengoptimalkan penggunaan temperature transmitter, pressure transmitter, level transmitter, dan sistem alarm, diharapkan dapat meningkatkan keselamatan kerja, mengurangi risiko kecelakaan, dan memastikan operasi reaktor berjalan dengan aman dan efisien.
Ekstraksi Likopen Dari Buah Tomat (Solanum Lycopersicum) Menggunakan Solvent N-Heksan
Authors: Lialismeri  , Elistia Nursafitri  , Simparmin Br Ginting  , Yuli Darni  , Azhar
Published: October 2023

Tomat memiliki warna cerah yang berasal dari senyawa karotenoid terutama likopen. Tingginnya kadar likopen pada buah tomat menjadikannya sebagai sumber anti oksidan dan anti kanker alami. Oleh sebab itu, penelitian ini dilakukan untuk mengetahui jumlah likopen tertinggi berdasarkan perbandingan bahan terhadap pelarut yang digunakan. Senyawa likopen dari buah tomat ini diperoleh melalui proses ekstraksi menggunakan metode ultrasonik dengan pelarut n-heksan dan pemisahan pelarut menggunakan rotary vacuum evaporator. Karaketerisasi ekstrak likopen dilakukan dengan analisis spektrofotometri dan FTIR. Variable yang digunakan adalah waktu ekstraksi selama 10, 20 dan 30 menit serta perbandingan bahan terhadap pelarut sebesar 1:3; 1:4 dan 1:5. Perolehan likopen tertinggi yakni pada rasio bahan terhadap pelarut 1:3 dan waktu ekstraksi 20 menit dengan total likopen sebesar 0,00308 mg/g. Dari hasil tersebut diketahui bahwa proses ekstraksi menggunakan pelarut n-heksan dan metode ultrasonik masih belum maksimal dikarenakan beberapa faktor yaitu proses pengengeringan dan pemisahan pelarut yang kurang tepat.
Recurrent Granuloma in the Nose: A Diagnostic Challenge
Authors: Andrea Sinuco Laura , Omar Jaimes Ángel , González Claudia , Méndez Gaviria Ligia
Published: October 2023

Recurrent granulomatous lesions in the facial region are difficult to diagnose. High-resolution dermatological ultrasound it´s an important key to the proper diagnostic orientation in this kind of lesions, by allowing the identification of its etiological factor and establishing the precise anatomical relationships for its proper intervention. We present the case of a young patient with a recurrent granuloma in the nasal ala whose correct diagnosis was made with high-resolution dermatological ultrasound, facilitating the successful treatment.
The Behavioral Corrosion Characterization of Aluminium AA6061/Chitosan Composites
Authors: Udoye N.E. , Uche-Abba S.O. , Inegbenebor A.O. , Joseph O.O.
Published: October 2023

The high cost and negative environmental impact of traditionally made aluminium metal matrix composites (AMMC) need their replacement with eco-friendly materials with improved mechanical characteristics. The repurposing of agricultural waste in innovative materials is critical to achieving a sustainable society. This study utilized AA6061/chitosan at sieve size of 90¸tm created via modified stir casting at weight proportions of 3, 6, 9, and 12 wt. %. The produced composites reached a maximum hardness of 60.2 HRB at 9wt. % chitosan, comparable to a 2.36 % improvement in AA6061 hardness, 57.4 HRB. Similarly, tensile strength increased with increasing chitosan particles, from 83.07MPa for the unreinforced alloy to a maximum of 114.92MPa for 12 wt. % AA6061 reinforcement with chitosan. The samples’ XRD revealed clear evidence of Hydroxyapatite, Ca10(PO4)6(OH)2, a component of teeth and bones that provides strength. The corrosion characteristics findings reveal that AA6061+9 wt. % chitosan has the lowest corrosion rate of all the samples. In addition, the microstructure of AA6061 with chitosan strains of reinforcement was observed in the AA6061/3wt. % SEM, eventually filling grain boundaries of the metal with increasing reinforcements to provide evenly distributed fibrous links connecting AA6061 grain structure at 6wt. % and 9wt. % reinforcement in the micrograph
Failure Analysis of Heat Exchanger Tube
Authors: Yu Ting , Zhang Fang , Zhao Li , Lu Xianjin , Xie Shijie
Published: October 2023

A company’s heat exchanger began operation in mid-July 2022. Heat exchanger tube medium for river water, the design pressure is 1.0MPa, working pressure is 0.4MPa; The inlet temperature is 34°C, and the outlet temperature is 40°C. The material of pipe path is S31603(GB/T 13296-2013), and the specification is φ16*1.5mm. The shell medium of the heat exchanger is syngas (hydrogen, methane, nitrogen, ammonia, etc.), the design pressure is 8.0MPa, the working pressure is 7.5MPa, the inlet temperature is 156.6°C, the outlet temperature is 42°C. In February 2023, a large amount of pungent gas was discharged when the return water of the heat exchanger pipe was drained. The sample was analyzed for syngas composition. On February 10, 2023, Quansheng planned to shut down the system to eliminate defects. After opening the heat exchanger, serious scaling was found. The failure analysis of the heat exchanger tube was carried out, and it was found that the physicochemical and mechanical properties of the heat exchanger tube (S31603 material, φ16*1.5mm) were qualified and in line with the material standard GB/T 13296-2013. The main reason for the heat exchanger pipe cracking is that the running medium uses river water, river water contains more impurities and high sulfur oxygen content, in the inner wall of the pipe scaling generation of polysulfuric acid; There is a certain residual stress in pipe manufacture, which results in stress corrosion of polysulphuric acid.
Experimental Study on Dynamic and Static Mechanical Properties and Thermal Properties of Tyre Rubber
Authors: Guo Jinquan , Ruan Xiang , Ding Peng , Gao Jianhong , Wang Shirong , Yang Xiaoxiang
Published: October 2023

In this paper, the dynamic and static mechanical properties and thermal properties of rubber materials used in tires were tested, the experimental data were measured and the performance characterization was completed, which laid a foundation for the accurate completion of tire finite element modeling and simulation. Shimazu universal electronic testing machine was used to carry out cyclic stretching under multiple strains on each rubber. When the stress-strain curve reached a stable state, the last tensile curve was taken as the experimental curve. Three common constitutive models were used to fit the experimental data, and the best fitting YEOH model was selected to characterize the static mechanical properties of rubber materials. Secondly, the viscoelastic parameters of the tire at three frequencies corresponding to three speeds were tested by the dynamic thermomechanical analyzer, and the variation curves of the Hysteresis coefficients (tanδ) at each frequency with the rise of temperature were obtained. And average the points of the curve to get the average value which will be used in the following calculation. Finally, the specific heat and thermal diffusion coefficient of the compound were measured by laser heat conduction instrument, and the density of the compound was measured by drainage method based on the principle of hydrostatics. The thermal conductivity coefficient was calculated by formula.
Research on Vibration Similarity Measure of Motorized Spindle Bearing Based on Probability and l2-Norm
Authors: Wu Weiwen , Zheng Zhenxing , Ye Zhijun , Xiong Siqi
Published: October 2023

The electric spindle is an essential component of modern CNC machine tools as it plays a crucial role in determining the performance and accuracy of the machine. However, the vibration of its bearing unit can significantly impact the spindle’s operational reliability and service life. Therefore, it is essential to develop a reliable method to distinguish between synchronous and asynchronous vibrations at both ends of the electric spindle. In this paper, we propose a signal similarity measurement method based on probability and l2-norm to address this issue. The proposed method employs EMD to decompose the vibration signals of the electric spindle bearings at both ends. Then, probability distribution and l2-norm are used to measure signal similarity effectively. This approach can effectively distinguish between synchronous and asynchronous vibrations at both ends of the electric spindle. Experimental testing was conducted to verify the effectiveness of this method. The results show that the proposed method is reliable and effective in distinguishing between synchronous and asynchronous vibrations at both ends of the electric spindle. This method has the potential to enhance the bearing’s service life and the operational reliability of the electric spindle.
Health Monitoring Method of Elevator Door Machine Based on Multi-Source Sensor Data
Authors: Zhang Xinyi , Zhang Fusheng , Ding Jianxing , Yao Yongxi , Lee Xu
Published: October 2023

With the rapid urbanization of China’s social economy, high-rise buildings can be seen everywhere Elevator has also become the main tool in the field of vertical transportation, and its application is becoming more and more extensive, which provides great convenience for people’s lives But the safety of the elevator is also a hot topic. In recent years, the elevator door crane operation failure will occur from time to time in various places, which leads to accidents caused by the impermanent opening and closing of the elevator door. Therefore, it is very important to study the door crane In view of this phenomenon, sensors for safety monitoring can be installed to monitor and judge whether the elevator is in a dangerous state through the data transmitted by the sensors, and repair the elevator in time before the danger occurs With the development of modern technology, the research direction of elevator door crane turns to the health monitoring of door crane, from the maintenance after failure to the prediction and timely maintenance before failure The maintenance cost, time and energy are greatly increased, the service life of elevators is prolonged, accidents are avoided, and the safety and reliability of equipment operation are improved.
Design and Research of a Miniature Live Coating Robot for Overhead Bare Conductors
Authors: Sun Zheng , Zhou Yu , Huang Xiangcheng , Xu Kuo
Published: October 2023

To solve the problem of insufficient crossing distance of overhead lines, the current power grid mainly adopts coating insulation layer on the outer surface of bare wires to achieve the purpose of line protection. However, the existing coating robots have large volume and weight, and there are problems such as insufficient climbing and braking capabilities. This article will improve the existing insulation coating robot technology, develop a compact and lightweight bare wire live insulation coating robot, reduce the volume and weight of the robot, achieve lightweight, and enable it to adapt to scenes where the distance between wires is relatively small, the distance below trees is close, the wire diameter is small, and the span is large. It will increase the climbing and braking capabilities of the robot, so that it can adapt to shuttle between mountains and forests with sloping lines, Increase the robot’s span crossing ability, further improve work efficiency by increasing its battery life and operating mileage, and achieve the goal of expanding application scenarios.
Shallow Sleep Control Management for Low-Power Rockets
Authors: Zhang Ying , Sun Kai
Published: October 2023

In this paper, a control method for shallow sleep management of low-power rockets is studied, and three sleep modes are verified for shallow sleep, and the optimal adaptation of shallow sleep of rockets with minimum power consumption of 16 watts is confirmed In different application environments, multi-mode operation with low power consumption is realized, so as to achieve the goal of long life under the requirements of long-term power up. The low-power mode can make the system run more stably, help reduce system losses, effectively reduce the volume and weight of power supply equipment, and improve the carrying capacity of the rocket. In order to achieve the purpose of low power consumption, based on the principle of “high and low matching”, the performance matching of chips of different performance levels at their optimal working points is analyzed, and the low-power chip architecture design under different computing power requirements is realized, and experimental verification is carried out.
Potential Evidence for Dark Matter as Dimensional Condensate
Authors: Goldfain Ervin
Published: October 2023

This brief note calls attention to tentative new evidence supporting the hypothesis that Dark Matter represents a large-scale dimensional condensate.
Insulin Sensitizers like Metformin and GLP1 with Degludec as Anti-Aging
Authors: Ahmed Amr , Akl Maher M.
Published: October 2023

This commentary discusses the role of albumin, a crucial protein in human plasma, in the process of aging, and its connection to insulin signaling. The piece explores the potential of insulin sensitizers, specifically Metformin and GLP1 with Degludec, as innovative therapeutic strategies for promoting healthy aging. The work underlines the need for further research in understanding the multifunctional capabilities of albumin and its modulation by insulin sensitizers.
Application of VIS-NIR Hyperspectral Imaging to the Detection and Quantification of MPs in Simulant Shellfish
Authors: Schlitt Kendall
Published: October 2023

As the world has become increasingly reliant on single-use plastics, plastic litter has increased exponentially, especially in marine ecosystems. One type of plastic litter affecting marine life is microplastics, which are plastics under 5mm in diameter. Microplastics are consumed by marine animals, which are then consumed by people. Study of the environmental and human health effects of these microplastics has proven difficult, in part due to difficulty detecting and quantifying microplastics. This study aims to detect microplastics in shellfish by utilizing the nondestructive method of hyperspectral imaging as an indicator of both marine ecosystem health and food quality. Gelatin models of shellfish were injected with a known concentration of microplastics (polyvinyl chloride (PVC) and polystyrene (PS), specifically). The hyperspectral camera then took 3-dimensional images of the models, with the wavelength dimension ranging from 400 nm to 1000 nm. Next, an algorithm called Partial Least Squares Regression Analysis was developed to analyze the relationship between the wavelengths and the amount of plastic in the sample. Preliminary results have shown slight variation in reflectance spectra between models spiked with microplastics and control models past the 950 nm range. Therefore, hyperspectral imaging might be a viable tool to detect and quantify microplastics in shellfish, but the range of the camera used in this study is a limitation.
Fetishization of Christian Martyrdom
Authors: Harris Peyton
Published: October 2023

Martyrdom in Christianity has been extensively researched, but this study examines its fetishization within modern violence, such as school shootings. This paper examines Christians' fantasy of martyrdom in the 1990s, and the cultural influence of Columbine shooting victims Rachel Scott and Cassie Bernall. The idealization of sacrifice and becoming a martyr post-death concerning faith maintains significant cultural relevance and negative implications throughout history. I found that martyrdom within Columbine has created a shift within teen Christian culture, especially with fantasies of violence and sacrifice. This research contributes to the extant research on the intersections of religion and violence.