bluuebunny/crossref_metadata_2025 huggingface dataset:
Comprensión del concepto de infinito actual y su relación con las funciones reales: el infinito y el modelo de van Hiele
Authors: Gutiérrez Sierra Alba Soraida , Londoño Cano René Alejandro
Published: November 2021

Este artículo surge de la reflexión de los resultados parciales de la investigación El concepto de infinito actual en el marco del modelo de van Hiele, cuyo propósito fue describir la comprensión de tres estudiantes de grado once de una institución educativa colombiana de carácter oficial, frente al concepto de infinito actual y su relación con funciones de variable real. Con ese propósito, se diseñó un instrumento de indagación permanente, consistente en una entrevista semiestructurada de carácter socrático. Para validar el instrumento, se propusieron descriptores hipotéticos que, refinados durante el proceso de investigación, contribuyeron a obtener los descriptores finales, para diseñar la entrevista definitiva y, a través de ella, a la luz del modelo de van Hiele, reconocer y clasificar el nivel de compresión de los estudiantes frente al concepto en cuestión. En cuanto al desarrollo metodológico se adoptó el enfoque cualitativo, con estudio de caso, que busca transformar la realidad en un contexto educativo particular, con miras a producir conocimiento práctico que pueda ser generalizado.
Diversidad de macroinvertebrados acuáticos en dos ecosistemas lóticos en El Doncello, Caquetá
Authors: Bravo Chaves Lalo Rodrigo , Restrepo Franco Gloria María
Published: November 2021

Estudiar macroinvertebrados acuáticos es útil para la estimación de la integridad de un ecosistema, debido a su capacidad de reflejar el efecto de una gran variedad de contaminantes. La investigación se realizó para evaluar la diversidad de macroinvertebrados acuáticos, presentes en dos ecosistemas lóticos del municipio de El Doncello, Caquetá, entre agosto de 2019 y marzo de 2020, comprendiendo periodos de aguas altas, transición y aguas bajas. Se establecieron tres estaciones de muestreo en el río Doncello y la quebrada Anayá del mismo municipio. Las colectas se realizaron con una red tipo D, empleando el método de muestreo intensivo en los diferentes microhábitats encontrados. La información se analizó con los paquetes estadísticos past y EstimateS para índices de diversidad y representatividad del muestreo, respectivamente. Se identificaron 95 géneros, 56 familias y 15 órdenes. Chironomidae (Diptera) fue la familia más abundante, seguida por Philopotamidae (Trichoptera) y Leptophlebiidae (Ephemeroptera). Los índices bióticos de calidad BMWP, ASPT y EPT permitieron evidenciar la influencia de la contaminación por residuos orgánicos de origen doméstico y la capacidad de autodepuración del agua de la quebrada Anayá. La comunidad de macroinvertebrados reportados responde a las perturbaciones antrópicas en los ecosistemas estudiados; las estaciones menos intervenidas presentaron la mayor riqueza, mientras que las más afectadas presentaron baja diversidad y alta dominancia.
Género Aspergillus: fuente potencial de péptidos bioactivos
Authors: Gómez Rojas Marcela Patricia , Arboleda Valencia Jorge William , Mosquera Martínez Oscar Marino
Published: November 2021

Los hongos del género Aspergillus son mohos filamentosos de distribución cosmopolita que participan en diferentes procesos en la naturaleza. Se ha reportado el uso de este género en fermentaciones con diversos sustratos para producir péptidos bioactivos u obtener otro tipo de metabolitos benéficos. En la salud humana, los péptidos son utilizados por las diferentes actividades biológicas que estos exhiben y su fácil absorción intestinal. Por lo anterior, se realizó una revisión bibliográfica siguiendo el método Prisma, utilizando la ecuación de búsqueda “bioactive peptides” AND “Aspergillus” en las bases de datos Scopus, Web of Science y Lens, con el fin de consolidar la información relacionada con el género y su producción de péptidos. La búsqueda arrojó 113 artículos, de los cuales se seleccionaron once, que indicaban que tan solo cinco especies del género Aspergillus han sido analizadas con respecto a sus péptidos bioactivos, obtenidos en fermentaciones. Aspergillus niger y Aspergillus oryzae son los más estudiados. Se concluye, que el género Aspergillus es una fuente potencial de péptidos bioactivos. Por otro lado, el artículo es uno de los primeros en sintetizar y analizar la información sobre péptidos bioactivos derivados de fermentaciones con este hongo, por lo que abre perspectivas para llevar a cabo investigaciones similares y acompañar los avances en esta área.
Conflictological Model of Institutionalization of Economic Processes in the Agriculture
Authors: Pohrishchuk Halyna , Semtsov Volodymyr , Dobizha Nataliia , Kucher Anatolii , Sysoieva Inna
Published: November 2021

The institutional essence, structure and typology of conflicts in a market economy are determined. The components of typical conflicts have been studied, as well as analysis of the type of economic conflicts "power – business entities" in the agricultural sector. It is established that any disproportions of the socio-economic system lead, due to the relevant incidents, to the aggravation of conflict situations. It was found that the conflict situations are objectively based on the contradictions of the interests of the main groups of agents and, accordingly, the institutions of the system. The results of our research give grounds to assert that the institutional modernization of the agricultural sector is possible only if new types are prevented and the consequences of existing conflicts are reduced, which is a kind of scheme of evasion within public control. It is proved that one of the universal tools of the unobserved economy in the light of the conflict paradigm are certain types of institutional agreements, and this is a fundamentally new methodology for reflecting real processes.
Estudos brasileiros e moçambicanos
Authors: Bussotti Luca , Siqueira Antonio Marcos de Oliveira , Araújo Wagner dos Reis Marques , Andrade Roberta Ferreira Coelho de , Andrade Aldair Oliveira de
Published: November 2021

Com o espírito de olhar para além de nós próprios, de explorar novas dimensões temáticas e geográficas, a REVES espera ter trazido, com este novo número, textos de interesse científico e sócio – político, numa altura em que o esforço para manter a postura correta típica do cientista social não se deve confundir com uma mera e estéril neutralidade diante dos cenários globais que diariamente a gente observa. Nesse sentido, convidamos os leitores a fazerem um passeio epistemológico nesta edição. Desejamos a todos leitores uma boa leitura.
Kenevir (Cannabis sativa L.) Sapının Katı Yakıt Pelet Özelliklerinin Belirlenmesi
Authors: DOK Mahmut , ACAR Mustafa , GİZLENCİ Şahin
Published: November 2021

Bu çalışma 2019 yılı içerisinde Karadeniz Tarımsal Araştırma Enstitüsü’nün Gelemen’deki arazisi üzerinde yürütülmüştür. Çalışmada materyal olarak, Avrupa'da yaygın ekim alanı olan, yurtdışı tescilli endüstriyel kenevir çeşitlerinden USO-31, Santhica-27, Ferimon, Fedora 17 ve Futura 75 ile birlikte Vezirköprü’de üreticiler tarafından uzun yıllar ekimi yapılan Narlısaray populasyonu’nun sapları kullanılmıştır. Çalışmada bitki boyu ve dekara sap verimi değerleri ile sapların lifi alındıktan sonra kalan artıklarından kalorifik değer, nem, kül, pelet çapı, pelet uzunluğu, pelet dayanıklılık direnci ve baca gazı emisyon değerleri (O2, CO2, CO, NO, NOx ve SO2) incelenmiştir. Çalışma tesadüf blokları deneme deseninde 3 tekerrürlü olarak yürütülmüştür. Çalışma sonucunda sap verimi, bitki boyu ve kalorifik değer bakımından en yüksek veriler, Narlısaray populasyonundan elde edilmiştir. Elde edilen sonuçlara göre, Narlısaray populasyonu başta olmak üzere, sırasıyla Futura-75, Uso-31, Ferimon, Fedora-17 ve Santhica-27 çeşitlerinin katı yakıt kaynağı olarak değerlendirilebileceği sonucuna varılmıştır.
Prospective varieties of dahlia cultural (Dahlia x cultorum Thorsr. et Reis.) when growing for shearing in conditions of protected ground
Authors: Voronchikhina I. N. , Shchuklina O. A. , Voronchikhin V. V. , Alenicheva A. D. , Klimenkova I. N. , Kvitko V. E. , Zavgorodniy S. V.
Published: November 2021

Relevance. In terms of the richness of colors, shapes and sizes of inflorescences and relative unpretentiousness during cultivation, as well as the duration of flowering of a dahlia, the cultural has no equal. Basically, this flower crop is grown in the open field and used for landscaping areas. Dahlias, due to their decorative properties, are a promising crop for cutting. But the growth in the volume of industrial cultivation of cut dahlias has long been constrained by two negative factors - the low life expectancy of cut flowers, and the fact that not all varieties of cultivated dahlias are suitable for cultivation in greenhouses. Therefore, the search for varieties that meet the aforementioned properties is an especially urgent task.Material and methods. The material for the study was 10 varieties of Dahlia × cultorum Dutch selection. They belong to different groups of dahlias – spherical: Souvenir d'Eté, The Voice, Jowey Winnie; decorative – Orion, Café au Lait, Fleurel, Karma Choc and pompom dahlias: Little William, Cornel Bronze, Petra's Wedding, All tubers were planted in phytotron beds. Phenological observations of plants were carried out according to the Methodology of State Variety Testing of Ornamental Crops. During the growing season, the following indicators were determined: the onset of phenological phases of development, the dynamics of plant growth, the number and size of inflorescences, the length of the peduncle, the duration of flowering.Results. It was found that all the studied varieties of cultural dahlias have a high decorative effect and are suitable for growing for cutting in greenhouse conditions. Growing plants in a phytotron allows you to get a high-quality cut almost two months ahead of time, as well as have a longer and more abundant flowering. It was found that the Café au Lait cultivar is not entirely suitable for cut cultivation in greenhouses or requires the development of cultivation technology that is individual for this cultivar. It was found that the Fleurel variety surpasses other studied varieties in terms of decorativeness, inflorescence size, peduncle length, onset time and flowering duration. A significant disadvantage of the variety is its high growth and fragility of the peduncles. The most popular cut varieties were Fleurel, Petra's Wedding, Jowey Winnie and Little William. It was found that the studied varieties of cultural dahlias were distinguished not only by high decorativeness, but also by high durability in a vase from 5 to 7 days.
АНАЛИЗ ЭФФЕКТИВНОСТИ ПРОЦЕССА ГАЗИФИКАЦИИ ПЫЛЕУГОЛЬНОГО ТОПЛИВА В ВЫСОКОТЕМПЕРАТУРНОМ ПОТОКЕ O2/N2 и O2/CO2 С ПОМОЩЬЮ МАТЕМАТИЧЕСКОГО МОДЕЛИРОВАНИЯ
Authors: Донской Игорь Геннадьевич
Published: November 2021

Ссылка для цитирования:  Донской И.Г. Анализ эффективности процесса газификации пылеугольного топлива в высокотемпературном потоке o2/n2 и o2/co2 с помощью математического моделирования // Известия Томского политехнического университета. Инжиниринг георесурсов. – 2021. – Т. 332. – № 11. – С. 127-140

Актуальность исследования связана с обостряющимися вопросами регулирования углеродных выбросов при сжигании твердого топлива и повышением экологических требований к теплоэнергетическим станциям. Цель: с помощью математического моделирования исследовать перспективы рециркуляции СО2 на угольных электростанциях с внутрицикловой газификацией, провести анализ эффективности процесса газификации топлива в условиях oxyfuel, определить оптимальные режимы переработки каменного угля и оценить возможность реализации этих режимов с точки зрения технологических ограничений. Объект: процесс газификации угольной пыли в дутье с разным составом и начальной температурой. Метод: математическое моделирование процесса термохимической конверсии угольной пыли в одномерной стационарной постановке. Результаты. Построены расчетные зависимости характеристик процесса газификации (химический КПД, температура выходящего газа) от удельного расхода дутья (α=0,1–0,7), концентрации кислорода в нем (20–30 %) и начальной температуры (373–1373 К) для смесей O2/N2 и O2/CO2. Определены оптимальные значения удельных расходов и максимальные значения химического КПД во всем диапазоне параметров. Оценен вклад теплофизических и реакционных свойств газа в изменение химического КПД процесса при смене состава дутья. Для исследования эффективности нагрева дутья используется критерий, учитывающий внешний подвод теплоты. Анализ показывает, что перегрев воздушного дутья не дает положительного эффекта на состав продуктов газификации из-за существования жестких стехиометрических ограничений; перегрев углекислотного дутья позволяет не только повысить химический КПД, но и улучшить стабильность процесса при низких значениях удельного расхода дутья.
La política exterior rusa pos Guerra Fría. ¿Caso paradigmático de revisionismo?
Authors: Adins Sebastien
Published: November 2021

Casi de modo unánime, discursos y documentos oficiales y, a la par, un gran número de textos académicos en Occidente tildan a Rusia como una potencia revisionista. Sobre todo, a partir de la toma de Crimea y Sebastopol por parte de Moscú y el inicio del conflicto en el Donbás en el año 2014, se le considera al Estado eurasiático como un spoiler de la política internacional, en búsqueda del debilitamiento de los valores, las reglas e instituciones del denominado «Orden Internacional Liberal». El presente artículo se propone problematizar esta afirmación al postular que la categoría del revisionismo no constituye una proyección internacional unidimensional, ni tampoco objetiva. Por otro lado, siguiendo a Murray (2019), el revisionismo, además de emerger al interior de un Estado, también se construye a través de las interacciones sociales con otros Estados, como efecto de su pugna por el reconocimiento. Luego de una revisión de la literatura sobre dicho concepto y la ubicación de la teoría de Murray en ella, el presente artículo indaga en los motivos y las estrategias de Rusia en el orden pos Guerra Fría, así como las capacidades que sustentan su política exterior. Bajo esta luz, se evaluará el grado de revisionismo en la proyección internacional rusa de los últimos años.
Estrategias de enmascaramiento en Kierkegaard y Kafka. Una breve reflexión sobre el papel del escritor en la moderna sociedad burguesa
Authors: Bartoli Fabio
Published: November 2021

Este artículo analiza las estrategias de enmascaramiento que Kierkegaard y Kafka adoptaron a lo largo de sus vidas. En primer lugar, se analizan algunos rasgos de la sociedad burguesa y del papel que el escritor tenía en ella. Sucesivamente, se describe la estrategia comunicativa de Kierkegaard y se identifican sus fines; después se hace la misma operación respecto de Kafka. Finalmente, se comparan las dos posturas y se subrayan diferencias y similitudes, para utilizar los resultados como insumos para una breve reflexión sobre el papel de la escritura en la moderna sociedad burguesa.
El problema del coste de la defensa
Authors: Martí Carlos
Published: November 2021

This article addresses the cost associated to defence, i.e., the resources that societies shall allocate to provide security to their members. It examines the methods and ways for setting and distributing these resources to obtain enough military capabilities for sustaining the perception of security of the citizens. The choice of an allocation that optimises social welfare is rather old and of constant concern. The main novelty of this article is exploring this problem from the bounded rationality of the human being, the imperfect information available, the choices unsupported by economic rationality and the constrained effectiveness of institutions and norms. These issues may drive to allocations that do not necessarily achieve the largest welfare.
Congenital Hypothyroidism
Authors: Brady Jacqueline , Cannupp Ashton , Myers Jordan , Jnah Amy J.
Published: November 2021

Congenital hypothyroidism (CH) is a disorder of thyroid hormone deficiency which develops secondary to incomplete thyroid development or inadequate thyroid hormone production. State-mandated newborn screening throughout the United States has increased the detection rate of CH, allowing for early intervention. Although the overall mortality rate of CH is low, delayed or omitted treatment can lead to devastating neurocognitive outcomes. As such, CH is regarded as the leading cause of preventable intellectual disability in children. Early identification, facilitated by astute neonatal nursing and medical care, is contingent upon an active working knowledge of the disease process and awareness of the limitations of the newborn screen.
Relative Adrenal Insufficiency: Crisis Averted?
Authors: Holmstrom Lindsay Elise , Jnah Amy J.
Published: November 2021

Relative adrenal insufficiency (AI) is a disease process commonly associated with preterm birth and critical illness. Further, the incidence of AI is inversely proportional to gestational age. The incidence of AI is likely underreported; however, it is reported to occur in 150–280/1,000,000 live births worldwide. Functional development of the adrenal gland does not occur until after 30 weeks of gestation; however, advances made in neonatal care increase the survivability of infants born well before this period. Among infants with AI, the adrenal gland is transiently incapable of secreting physiologic levels of cortisol in response to stressors. Common and nonspecific signs include hypotension, poor perfusion, and dysregulation of fluid, electrolytes, and euglycemia. Recognition, diagnosis, and steroid therapy is critical, as inappropriately managed AI can lead to an adrenal crisis, shock, and death. Understanding the presentation and common risk factors for developing relative AI is crucial for quick diagnosis and timely management to prevent morbidity and mortality in this vulnerable population.
Neuroprotective Agents for Neonates with Hypoxic-Ischemic Encephalopathy
Authors: O'Mara Keliana , McPherson Christopher
Published: November 2021

Hypoxic-ischemic encephalopathy (HIE) remains a significant source of long-term neurodevelopmental impairment despite overall improvements in survival without disability in neonates who undergo therapeutic hypothermia. Each phase in the evolution of hypoxic-ischemic injury presents potential pharmacologic targets for neuroprotective agents. Melatonin is a promising emerging therapy for early phases of ischemic injury, but utility is currently limited by the lack of pharmaceutical-grade products. Magnesium has been extensively studied for its neuroprotective effects in the preterm population. Studies in neonates with HIE have produced mixed outcomes. Erythropoietin use in HIE with or without therapeutic hypothermia appears to be safe and may provide additional benefit. Dexmedetomidine, N-acetylcysteine, xenon, and topiramate all have promising animal data, but need additional human trials to elucidate what role they may play in HIE. Frequent review of existing literature is required to ensure provision of evidence-based pharmacologic agents for neuroprotection following HIE.
Step 3: Critically Appraising Evidence
Authors: Bell Susan Givens
Published: November 2021

Critical appraisal of the evidence is the third step in the evidence-based practice process. This column, the first in a multipart series to describe the critical appraisal process, defines and provides examples of the levels of evidence and tools to begin the appraisal process using a rapid critical appraisal technique.
Stratigraphic correlations between the Brabant Massif and the Stavelot, Rocroi and Givonne inliers (Belgium) and geological implications
Authors: HERBOSCH Alain
Published: November 2021

The Caledonian basement crops out in the middle and southern part of Belgium in two major tectonic units: the Brabant Massif in the Brabant Parautochthon and the Stavelot-Venn, Rocroi, Givonne and Serpont inliers in the Ardenne Allochthon. The main aim of this work is to achieve a chronostratigraphic correlation between the Brabant Massif and the Ardenne inliers, from the lower Cambrian to the Middle Ordovician. Throughout his career, Michel Vanguestaine established an informal acritarch biozonation for this basement, which is only linked to the international stratigraphic scale in vigour at that time. Our first step was to correlate these informal biozones with the trilobite (Cambrian) and graptolite (Ordovician) biozonations which are currently well correlated with the chronostratigraphy. Then, compilation of the literature concerning each of these sedimentary units makes it possible to assign a chronostratigraphic position to their constituent formations. This work has permitted the establishment of a complete chart of the stratigraphic correlations between the Brabant Massif and the three main Ardenne inliers (Stavelot-Venn, Rocroi and Givonne). Geological implications are discussed: the Brabant Massif and the Ardenne inliers formed a single sedimentation basin with different and rheologically contrasting basements (rift and shoulder). New arguments confirm the presence of a Caledonian orogeny in the Ardenne.
Validity Of Self-Reported Weight, Height And Body Mass Index Among Malaysian Late Adolescents
Authors: Pun Pun Kong , Thangiah Nithiah , Abdul Majid Hazreen
Published: November 2021

Introduction: Malaysia suffers from obesity problems with nearly a quarter of the children and adolescents being overweight or obese. Validated methods are needed to measure the trend of overweight and obesity easily.Objective: The study investigates the precision of Malaysian late adolescents' self-reported height and weight compared to direct-measured methods.Methods:   About 114 young adults aged 19-20 years old participated in this cross sectional study in 2019. Self-reported and direct-measured anthropometrics including height and weight were gathered through phone calls and study instruments. The obtained height and weight values calculates BMI and determines classifications.Results: The ICC value were excellent between reported and measured weight (ICC= 0.94; 95% CI=0.91-0.96), height (ICC= 0.95; 95% CI=0.83-0.98) and BMI (ICC = 0.89; 95% CI=0.78-0.94) were found. Additionally, good agreement observed from B & A plots indicated that the differences between both independent measurement variables were minor and most of the differences were within the area of the limit of agreement at the population level for their anthropometric measurements. The Cohen’s Kappa showed substantial agreement of BMI calculated from reported weight and height (ҡ = 0.61; 95% CI= 0.48-0.74), boys (ҡ = 0.67; 95% CI=0.43-0.91) and girls (ҡ = 0.58; 95% CI=0.43-0.73).Conclusion: This validation study concluded that self-reported height and weight were in agreement with direct-measured methods. This technique can be utilized to assess the anthropometric status of Malaysian late adolescents for population studies.
Relationship Between Smoker Male Partner and Intrauterine Insemination Success in Kasih Ibu General Hospital Denpasar
Authors: Salim Albert , Kurniawan Yukhi , Pramesemara I Gusti Ngurah
Published: November 2021

Background: Assisted reproductive technology, one of which is intrauterine insemination (IUI) allows infertile couples to get pregnant. The pregnancy success of IUI procedure varies among individuals.
Objective: The study aim is to determine whether there is a relationship between smoker male partners and IUI success.
Methods: This research is an analytic study with cross-sectional approach conducted at Kasih Ibu General Hospital Denpasar with purposive sampling technique. There are 35 male couples aged 25-50 years who underwent the IUI procedure selected as samples. The research data was gathered from patient's medical records and statistically analyzed using the Chi-Square test.
Results: The study found that of the 35 samples, 13 (37.1%) were smokers, whereas 22 (62.9%) male partners were non-smokers. There were 6 (17.1%) samples’ partners who were pregnant after undergoing the IUI procedure, and 29 (82.9%) samples’ partners were not pregnant. It was found that there was no significant relationship between male partner smokers and the success of IUI at Kasih Ibu General Hospital Denpasar (p=0.832). However, in descriptive analysis and relative risk calculation, smoker male partner is less likely to achieve pregnancy than non-smoker’s male partner (RR=0.85).
Conclusion: Smoker male partners may not contribute to IUI success. Further studies should be done with a higher number of samples, multicenter, and more controlled risk factors to make it more accurate in determining the relationship.
Factors Related to the Risk of Occupational Stress among Nurses in the Emergency Room at Sosodoro Djatikoesoemo Bojonegoro Hospital
Authors: Putra Rizqi Supramulyana , Rahmadhani Tya Nisvi , Hidayat Sho`im
Published: November 2021

Introduction: Occupational stress is a body response that is present in the form of physiological, psychological, and behavioral responses to stressors in the work environment. If this condition is not handled properly, it will have a negative impact on workers, and it can reduce the level of health and cause several diseases. The purpose of this research was to determine the risk of occupational stress among nurses in the Emergency Room at Sosodoro Djatikoesoemodan Hospital and what factors were related to the risk of occupational stress. Methods: This research is a descriptive observational study with respondents consisting of 26 nurses in the Emergency Room at Sosodoro Djatikoesoemo Hospital. Data collection was done using questionnaires to measure the level of occupational stress risk of nurses, which included variables of individual worker’s characteristics and job characteristics. The data analysis in this study used the Spearman correlation. Results: The results showed that 15.4% of nurses had a low level of occupational stress risk, 69.2% had a moderate level of occupational stress risk, and 15.4% had a high level of occupational stress risk. Moreover, there was a significant relationship between social support and workload factors on the risk of occupational stress. Conclusion: Most of the nurses experienced moderate occupational stress. Gender, personality type, workload and mental demands were factors that were related to the risk of occupational stress and could increase the risk of occupational stress. Meanwhile, interpersonal conflict and job control were elements that were not related to the risk of occupational stress.Keywords: emergency room Sododoro Djatikoesomo hospital, nurses, risk of occupational stress
Psychosocial Risk Factors on Mining Workers Processing Copper and Gold Minerals during Covid-19 Pandemic
Authors: Lestari Khaerani Suci , Muhamad Aditya Fadilah , Susanto Arif , Putro Edi Karyono , Wilmot John Charles , Savira Yenni Miranda , Listiarini Aprilia , Zulfakar Donny , Sunarno Stevan Deby Anbiya Muhamad
Published: November 2021

Introduction: In the era of the Covid-19 pandemic, psychosocial issues as part of health and safety have become a popular mental health issue, particularly among gold and copper miners. This situation has led some companies to fire their unskilled and unproductive workers to minimize the production costs. However, there is no specific regulation for the workers that could be a barrier of this unpredicted situation. This condition mostly becomes a negative stressor for the workers at the jobsite. At some point, it develops to a critical health and safety condition known as risky and unhealthy behavior that brings to fatality. The aim of this research is to analyze the psychosocial risk factors that adversely affect the psychology of copper and gold mining workers during the pandemic. Method: This is a cross-sectional study with COPSOQ III, used to identify factors contributing to workers’ psychology, while Dolan & Arsenault’s questionnaire was used to analyze stress symptoms, with a Cronbach α value of 0.83-0.84. Results: Multivariate tests were conducted on the variables of work experience, body mass index, marital status, emotional demands, vertical trust, and organizational justice. Significance values were obtained for the variables of work experience (0.590 body mass index (0.517), marital status (0.122), emotional demands (0.187), vertical trust (0.000), and organizational justice (0.119). Of the six variables, only vertical trusthad a significant value. Conclusion: Psychological risk factors on copper and gold mining workers during the pandemic are only influenced by a vertical trust.Keywords: COPSOQ III, leadership, pandemic, psychosocial, vertical trust
Benzene Exposure on Rig X from Drilling Fluid and Effectiveness of Local Exhaust Ventilation
Authors: William William , Nasri Sjahrul Meizar
Published: November 2021

Introduction: Benzene is a carcinogenic compound commonly found in drilling fluid, a chemical used in oil and gas drilling operations. Benzene exposure to workers is known to cause acute and/or chronic disease. Adequate control measures shall be identified and implemented to prevent the adverse health effects of benzene from the utilization of drilling fluid. Methods: This study measured benzene concentrations at several locations, above the drilling rig, which has the potential risk of benzene vapor exposure. From the measurement results, if the threshold limit value was exceeded, LEV was proposed to be installed and the effectiveness of LEV at each location would be assessed. A two-tailed t-test was used with a confidence level of 95% (α=0.05) to measure the effectiveness of LEV. Results: In several areas, benzene concentration exceeded TLV-TWA, and LEV was installed in those areas as control measures. In this study, it was found that LEV was not always effective in reducing the concentration of benzene in some areas. Conclusion: Drilling fluid was essential for drilling activity, and this could cause benzene vapor to contaminate the working area. The installation of the LEV shall consider the type of containment through which the drilling fluid flows to ensure the mitigation measures are effective to reduce the concentration of benzene in the air that may be exposed to workers.Keywords: benzene, drilling fluid, exhaust ventilation
Relationship of Noise and Individual Characteristics with Blood Pressure of Workers in the Production Area of a Heavy Equipment Component Company in Tegal
Authors: Yuliyatin Tri , Ismayatun Siti Dewi
Published: November 2021

Introduction: Noise is any unwanted sound in the work environment that comes from production machines that can cause various health problems. Noise can also cause an increase in blood pressure as a physiological reaction of the body. Apart from the noise factor, an increase in workers' blood pressure can also be triggered by several factors such as worker characteristics (worker’s nutritional status, work experience and work duration). The purpose of this study is to examine whether there is a relationship between noise and worker characteristics and blood pressure. Methods: The design of this study was cross-sectional with a descriptive observational method. The sample in this study was the total population of workers in the company's production area, as many as 42 respondents. Workers' blood pressure was measured before and after work, work environment noise was measured using sound level meter, and questionnaires were used to determine individual characteristics. Results: The increase in blood pressure before and after work occurred most in the unit with the highest noise intensity. The increase in blood pressure before and after work also occurred in the categories of the longest work period and the longest work duration in a day. Conclusion: There was a strong correlation between noise and systolic blood and a weak relationship with diastole. Nutritional status had a weak relationship with blood pressure. Period of work and blood pressure had a moderate relationship, and duration of work and blood pressure had a strong relationship. Keywords: blood pressure, individual characteristics, noise
Factors Related to Work Stress among Health Office Employees during Covid-19 Pandemic
Authors: Cristenzein Luga Rizqi , Adhi Kadek Tresna
Published: November 2021

Introduction: Study related to work stress is usually more focused on the industrial sector. Meanwhile, workers in other sectors such as the government organization also have the potential to feel stressed due to their job. During the COVID-19 (Coronavirus Disease) pandemic, Health Office is one of the main stakeholders in handling and preventing COVID-19. The COVID-19 pandemic can cause work stress due to unachieved health programs and huge demands to develop programs related to this pandemic. This study analyzed the relationship between individual factors, work factors, and factors outside of work with level of work stress among Health Office employees. This study is expected to be able to analyze work stress and its determinant as early as possible. Methods: This study was a cross-sectional study using the Depression, Anxiety, Stress Scale 42 (DASS-42) and NIOSH (National Institute for Occupational Safety and Health) Generic Job Stress Questionnaire instrument. This study was conducted at the Public Health Office Bogor Regency April 2021. This study used total sampling method on employees of the Public Health Office Bogor Regency with total sample collected of 135 respondents. Data analysis in this study was performed using multiple logistic regression. Results: 86.67% of respondents did not experience work stress, 5.93% of respondents had mild work stress, and 7.41% of respondents experienced moderate work stress. Moreover, workload (p = 0.0001) and social support (p = 0.011) had a significant relationship in increasing work stress. Conclusion: Workload was the most dominant variable affecting work stress in which workers who had high subjective workload were 33.63 times more stressful compared to workers who had the appropriate workload. Prevention of occupational stress can be done by adjusting workloads and building a good social environment between colleagues.Keywords: factors outside of work, health office, individual factors, work factors, work stress
Gender Bias and Sexual Harassment in the Mining Industry: Unceasing Hurdles to Females’ Career Development and Work Safety
Authors: Iradukunda Sarah Karen , Nahayo Obed , Saptandari Pinky
Published: November 2021

Introduction: Gender issue has been tremendously discussed all over the world, and it inhibits females’ career development and work safety. Nevertheless, it specifically persists in the mining industry and continues to discourage women from developing and managing their careers in the mining industry. Moreover, gender issue hampers their work safety as well in spite of the fact that researchers have estimated that around 10% of females work in the mining sector. This research aims to explain how gender bias and sexual harassment in the mining industry hamper females’ career development and work safety, which in turn affects this industry’s sustainable development. Methods: The method of this study was qualitative descriptive research approach, and the snowball sampling technique was used, where researchers selected 23 informants who had experienced gender bias and sexual harassment while working in mining companies. Phone interviews were conducted, and informants answered questions about gender bias and sexual harassment in the workplace towards their career development. Transcription, segmentation and conceptualization were done to analyze data. Results: The research results have shown that gender bias and sexual harassment are big stumbling blocks not only to women’s career development and work safety in the mining sector but also to the industry itself. The research has revealed that the hiring process, where most women get rejected because of wrong perceptions and cultural background that mining-related works are for men, plays a big role in this issue. Moreover, those who are hired are not taken care of. Conclusion: Gender bias and sexual harassment significantly affect career development of female workers, and they also hinder their work safety and financial stability.Keywords: career development, mining, gender bias, sexual harassment, work safety
Literature Review: Risk Factors for Lung Physiological Disorders Due to Exposure to Wood Dust
Authors: Ardyaswara Prayudha
Published: November 2021

Introduction: The wood processing industry in Indonesia is experiencing very rapid development, so there are positive and negative impacts of this industry for the country. The positive impacts that occur such as increased economic growth while the negative impacts that occur include environmental pollution which directly impacts the health of workers. One of the bad effects experienced by workers working in the industrial sector is wood dust. Wood dust is an invisible object that can circulate through the air so that it can enter the body and cause disruption of lung function of workers. The purpose of this research to conduct research on the factors of lung physiology disorders caused by vulnerability to wood dust. Method: The method was used in this research is a literature review by reviewing 10 relevant articles. Results: The effects showed that the method used is the same, which is using cross sectional, and during the study the data collection tools used questionnaires with interviews. In line with the outcomes of the study, factors for pulmonary physiology are not only caused by dust levels that exceeded the threshold value (NAV), but there are several other factors, namely individual characteristics such as length of service, duration of exposure, smoking habits, and use of personal protective equipment (PPE). Moreover, several studies presented bivariate tests to find out the relationship between variables that are factors in the occurrence of pulmonary physiology. Conclusions: Of 10 studies most have performed a bivariate analysis, but just a few have analyzed all the factors causing pulmonary physiology. Keywords: literature review, pulmonary physiology, risk factor, wood dust
THE ASSESSMENT OF HEALTH PROTOCOL IMPLEMENTATION IN FOOD AND BEVERAGES BUSINESS DURING COVID-19 PANDEMIC ERA
Authors: Hutahaean Lusi Sandra , Ilyas Muhammad , Isbayuputra Marsen , Basrowi Ray Wagiu , Soemarko Dewi
Published: November 2021

ABSTRACTDuring the COVID-19 pandemic era, the government has implemented a new strategy of health protocol called Adaptation of New Habits to prevent COVID -19 virus spread. By implementing such protocol, it is expected that health and economic sectors can be handled well. The research aims to discover the implementation of health protocol in Indonesia’s food and beverage business, and to analyze factors that support and hamper its implementation.  This research was cross-sectional research with direct observation and brief interviews with 16 food and beverage business places. Observations and interviews were guided using a checklist derived from government policies set by the ministry of health and commerce then the data will be analyzed descriptively. This research shows that the implementation health protocol remained far from expectations. Moreover, business activity, management system, and the awareness of employers, employees, as well as consumers, became a critical key in health protocol implementation. Comprehending the dangers of COVID-19 and committing to comply with health protocols are imperatives to succeed in the health protocol implementation.  Keywords: Adaptation of New Habits, Health Protocol of COVID-19 Pandemic, evaluating health protocols implementation
RELATIONSHIP BETWEEN NUTRITION INTAKE AND THE FITNESS OF MANUFACTURING WORKERS IN INDONESIA
Authors: Ilyas Muhammad , Soemarko Dewi Sumaryani , Adi Nuri Purwito , Fitria Dewi Yunia , Putra Marsen Isbayu , Kualasari Yessi
Published: November 2021

ABSTRACKIndonesia ranks fourth in the world out of 15 countries whose manufacturing industries contribute more than 10% to the Gross Domestic Product (GDP). Nowadays, one of the consequences of the rapid development of the manufacturing industry in Indonesia is related to work productivity. Each person's work productivity is not the same, one of them depends on the availability of nutrients in the body. Lack of nutritional consumption for someone from standard needs will affect health conditions, activities, and work productivity. Nutritional substances in workers also affect fitness in addition to other factors such as age, health status, nutritional status, nutritional status, gender, and psychological conditions. Based on the description above, it is necessary to study the relationship between nutritional status and physical fitness of workers in manufacturing companies in Indonesia. The study was cross sectional on 120 workers from 6 manufacturing companies in Indonesia which was conducted using cluster sampling. Assessment of individual characteristics was conducted by direct interview. Assessment of nutritional intake uses the Food Frequency Questionnaire (FFQ) and the results were categorized as appropriate and inappropriate based on the 2019 nutritional adequacy figure for the Indonesian population. The fitness assessment (physical capacity) used a six-minute walking test by an occupational specialist and was converted to Meters and categorized with a cut off of 4.5 Mets to be sufficient or insufficient. About one third of manufacturing workers were centrally obese. Characteristics The dietary intake according to the recommendation were only about 10%, namely the appropriate carbohydrate intake 11.7% (Frequency 8.46 times (533.22 gr)), suitable fat 12.5% (Frequency 2.75 times (57.14 gr)), and suitable protein 10% (Frequency 6.55 times (101.77 gr)). The physical capacity of manufacturing workers in Indonesia was categorized as sufficient as much as 75.8% of their workload. Factors that affect physical capacity, namely age ≥ 40 years have 4.37 times less physical capacity and protein intake affected physical capacity / fitness for workers (p = 0.02). About a third of manufacturing workers were centrally obese. The characteristic of food intake in accordance with the recommended nutritional adequacy of the Indonesian population was only about 10%. The physical capacity of manufacturing workers in Indonesia was categorized as sufficient as much as 75.8% of their workload. Factors that affected physical capacity were age and protein intake. Keywords: Food Intake, Food Frequency Questionnaire (FFQ), Manufacturing Worker, Fitness, Six-Minute Walking Test.
POLICY PERSPECTIVES OF MITIGATION AND RECOVERY DURING COVID-19 PANDEMIC: A NARRATIVE REVIEW
Authors: Jayawickrama Withanage Iresha Udayangani , Kumarawansa Weerapperuma Kankanamge Wijaya Sarathchandra , Pathirathna Kapu Gamage Ravindra Vishwajith , Adikari Adikari Mudiyanselage Pamila Sadeeka , Samarasinghe Yaddehige Jayanath
Published: November 2021

Background: The world is in the grip of an unprecedented novel COVID-19 pandemic. These have resulted in massive impacts on humans as well as on economies invariably. Hence, planning for a future pandemic is vital in minimizing deleterious effects.Aims: The current review aimed to derive common policy perspectives that are important in future planning of a pandemic.Methods: A narrative review was conducted by searching published articles from PubMed, Medline, Scopus, CINAHL, and Google Scholar. Forty-eight articles were selected for the review.Results: The policy perspectives derived under mitigation were rearranged into surveillance, epidemiology, and lab activities. The policy perspectives under recovery derived were related to economy, supply chain management, sustainable and green concept, and health system.Conclusion: Understanding common policy perspectives is important in the mitigation and recovery planning of a pandemic with similar nature in the future. The spillover effects in response to the mitigation measures are deemed vital in planning mitigation and recovery measures for future pandemics. Global and regional resource sharing mechanisms are vital when a universal shortage of healthcare resources occurs.Keywords: mitigation, pandemic management, policy perspectives, recovery
Stable and efficient seawater splitting on a porous phosphate-intercalated NiFe (oxy)hydroxide@NiMoO4 core-shell micropillar electrode
Authors: Yang Chen , Gao Nannan , Wang Xilong , Lu Jiajia , Cao Lijuan , Li Yadong , Liang Han-Pu
Published: November 2021

Seawater splitting powered by solar or wind sources is a significant renewable energy storage technology for the production of green hydrogen energy. However, both the chlorine evolution reaction and chloride corrosion are intractable issues in seawater splitting. Here, a porous electrode based on a phosphate-intercalated NiFe (oxy)hydroxide shell coated on a nickel molybdate (NiMoO4) micropillar core (denoted as P-NiFe@NiMoO4) is synthesized through an electrochemical oxidation strategy. During the electrochemical oxidation process, the etching of MoO2 promotes the reconstruction of NiFe (oxy)hydroxide and the formation of porous structures in an alkaline solution. The optimized P-NiFe@NiMoO4 electrocatalysts afford a low overpotential of 258 mV at a current density of 100 mA/cm2 in alkaline seawater. By pairing the anode with a cathode of as-synthesized P-NiMoO, the electrolyzer presents a low voltage of 1.63 V at 100 mA/cm2 in alkaline seawater with excellent stability. Moreover, the remarkable stability of the anode seems to be attributed to the in-situ phosphate formed during the electrochemical oxidation process to passivate chloride corrosion.
A AMAZÔNIA NA IMPRENSA DO BRASIL IMPÉRIO: DOS VIAJANTES À CONSOLIDAÇÃO DA SOBERANIA NACIONAL (1822-1880)
Authors: Munaro Luís Francisco
Published: November 2021

Este artigo propõe uma busca pela Amazônia na imprensa do Brasil império. A partir da identificação de periódicos em que a palavra-chave Amazônia apareceu no sistema de buscas da Hemeroteca Digital, investiga como ela se transformou de vocábulo usado pelos viajantes para definir a hinterlândia num topônimo capaz de destacar pertencimento a uma identidade política regional. A busca elencou 17 títulos de jornais dispersos pelo território brasileiro, entre os anos de 1822 e 1880, e faz parte de um estudo mais amplo, relativo a como a Amazônia se fundou e buscou construir a sua própria identidade política no mundo moderno, num processo de tensão constante entre região e nação. O estudo toma como ponto de partida os pressupostos teóricos relativos à “história conceitual” de Reinhardt Koselleck (2006), segundo a qual os conceitos são aspectos fundantes da sociedade e da ação política, permitindo o agrupamento de vastos coletivos em torno de projetos políticos em comum. O conceito Amazônia passa a identificar, através da difusão e consolidação da palavra impressa, um recorte espacial no qual indivíduos, em geral pertencentes a círculos elitizados, reclamam o pertencimento a uma determinada identidade política e cultural.