bluuebunny/crossref_metadata_2025 huggingface dataset:
Enzymatic production of ethyl esters from castor oil
Authors: Delgado Claudia , Pashova Vaselina
Published: February 2024

iodiesel synthesis through transesterificación of castor oil with ethanol using n-hexane as a solvent and a lipozyme TL IM commercial lipase as a biocatalyst was studied. The effect of ethanol molar relation to oil (3:1-10:1), temperature of reaction (35-65ºC), initial enzymatic charge (5-20% p/p) and amount of water (0-10% p/p) was investigated. The maximum percentage of bio-diesel (ethyl-esters) was obtained at a temperature of 35ºC, a 5:1 ethanol to oil molar ratio, an initial enzymatic charge of 15 % p/p and an initial water concentration of 2% p/p, both of them based on the castor oil weight. A simplified model was proposed to describe the enzymatic kinetics of castor oil transesterification with ethanol, based on the ping-pong Bi Bi mechanism with competitive inhibition for alcohol. The kinetic parameters of the model were estimated graphically and parametrically; a good approach among the results foreseen by the model and experimental data was found at low ethanol concentration (40-80 mol Kg-1).
CR-LDP as the signaling protocol at networking multiprotocol label switching
Authors: López Danilo , Hernández César , Pedraza Luis
Published: February 2024

This paper reports raised events and results from the use of CR-LDP as a possible protocol of signal point MPLS, in order determine whether QoS warranties the desired quality for intensive bandwidth applications.
Triglyceride transesterification in heterogeneous reaction system with calcium oxide as catalyst
Authors: Becerra Ortega Mónica , Centeno Hurtado Aristóbulo , Giraldo Duarte Sonia Azucena
Published: February 2024

In this work, the behavior of the CaO as a potential catalyst for the transesterification of triglyceride towards biodiesel production was studied. The effect of the alcohol type, the ratio of alcohol/triacetin, the amount of catalyst, and the chain length of triglyceride on the catalytic behavior of CaO was analyzed. Total conversion was obtained at room temperature with a 6:1 molar ratio of methanol to triacetin over 1% of CaO, after 1 h. It was demonstrated that the whole reaction occurs in heterogeneous phase. During five reaction cycles the CaO maintained a high catalytic activity, showing its good stability. Additionally, it was established that the length of the triglyceride used influenced the transesterification reaction yield due to the steric hindrances and diffusional limitations in the fluid phase.
Experimental analysis of the vibration on the draft tube of a Francis hydraulic turbine during operation at different power levels
Authors: Casanova García Fernando , Mantilla Viveros Carlos Alberto
Published: February 2024

Severe vibrations are present on the draft tube of a 95 MW hydraulic turbine operating at partial load. Frequent failures on structural elements of the power plant are produced, due to the hydraulic instability inside the draft tube; mainly when the machine operates at partial load. Pressure inside the draft tube and stress on the external draft tube wall were measured at several power levels to identify the power where the conditions are critical for the structure. Also, measurements were conducted at partial load with air injection over the stay vanes and pressure relief on the spiral case. It was found that air injection effectively reduced vibrations while the pressure relief on the spiral case did not produce any useful effect.
Design optimization of aluminum rims in bending by finite element analysis
Authors: Peña Bustos Fabio Marcelo
Published: February 2024

This paper shows the process for optimization of structural design to fatigue bending aluminum wheels in a company located in the city of Manizales, Colombia. The process was conducted relating the finite element analysis with fatigue bending tests results, demonstrating that the design of aluminum wheels can be optimized by reducing the development time of each model, getting lighter wheels, which means savings cost of development and manufacturing of the product with consequent improvements in efficiency and performance of vehicles. Furthermore, if the simulation is performed early in the product development process, designs can be optimized prior to manufacture and testing of physical prototypes. The work presented shows how the finite element analysis has successfully incorporated as part of the wheels normal design process in the company, with consequent benefits in terms of reliability and productivity.
Análisis energético y exergético del proceso de obtención de etanol a partir de la fruta del banano
Authors: Velásquez-Arredondo H. I. , Ruiz-Colorado A. A. , Oliveira S.
Published: February 2024

Una alternativa para la producción de etanol, consiste en el aprovechamiento de residuos vegetales, como los excedentes de la producción de banano, que en Colombia alcanzan 2.400.000 t/año entre: banano de rechazo y material lignocelulósico. En este trabajo se analiza el comportamiento energético y exergético al escalar el proceso desarrollado a nivel de laboratorio a una planta de producción que utilice el banano para la producción de etanol, involucrando: cultivo y transporte del material vegetal, hidrólisis del banano,fermentación de los azúcares, destilación del etanol y planta de utilidades. Adicionalmente, se obtiene indicadores en base energética y exergética para evaluar el proceso. Los resultados de la evaluación muestran que el proceso de obtención de etanol a partir de la fruta del banano presenta un balance energético positivo pero se podrían realizar algunas modificaciones buscando aumentar la eficiencia exergética del proceso.
Examining the Interplay Between Goal Structures and the Social-Emotional Development of Primary School Students
Authors: Gerasimova I.O.
Published: February 2024

The article examines contemporary conceptual frameworks of social-emotional skills in relation to the psychological development of primary school students in ontogenesis. Based on the theoretical analysis, propositions are formulated regarding the shape of educational practices aimed to foster social-emotional skills. In particular, the relationship between the characteristics of the classroom as a social system and the development of social-emotional skills in primary school students is argued. The article describes the reciprocal relationships between the social-emotional skills of primary school students and their psychological well-being. The article demonstrates how a focus on the development of social-emotional skills can have a positive impact on students’ psychological well-being as well. The article is grounded in Achievement Goal Theory and Social Interdependency Theory. It is posited that the classroom can be operationalized as a structure of interconnected elements shaped by teaching practices on the one hand and is a matter of perception of students on the other. The article proposes that the development of primary school students’ social-emotional skills might be related to the teaching practices that endorse a mastery goal structure. Suggestions for further research on the relationship between teaching practices and the development of social-emotional skills in primary school students are formulated.
Manifestations of Prosociality in Relationship to Each Other in Siblings of Preschool and Early Age
Authors: Tsvitsinskaya A.M. , Bulygina M.V.
Published: February 2024

The work is aimed at identifying the features of prosocial behavior in sibling pairs of preschool and early age children. The materials of an empirical study obtained on a sample of three two-child families are presented. The study involved children aged 2 to 5,5 years (M=3,917) and their mothers aged 25 to 37 years (M=29,7). Two pairs of siblings were of different sexes (older brother — younger sister and older sister — younger brother) and one pair consisted of two sisters. The study was conducted by observing the behavior of children, interviews with mothers and a series of experimental situations developed by E.O. Smirnova, V.M. Kholmogorova. The results obtained suggest that children of both preschool and early age are capable of showing prosociality in relation to sibling. Their prosocial behavior manifests itself in the form of instrumental help, empathy and altruism.
Half a Century in Service: Professor Leonid Gerasimovich Marchenko (1941–2019)
Authors: Flisyuk Elena V. , Marchenko Alexey  L.
Published: February 2024

This text is a dedication to the Professor Leonid Gerasimovich Marchenko, a graduate of the Leningrad Institute of Chemical-Pharmaceutical Sciences. Throughout his career in education, L.G. Marchenko progressed from being an assistant to eventually heading the Department of Pharmaceutical Technology of Medications. Apart from his teaching activities, he was actively involved in administrative work: serving as deputy dean, and from 1983 to 1986, as the dean of the Pharmaceutical Faculty; from 1986 to 2005, he was the Vice-Rector for Academic Affairs, then from 2005 to 2008, the First Vice-Rector for Academic Affairs, and from 2008 to 2009, an advisor to the rector. The essay draws on family archival materials, thanks to the active support of Ekaterina Anatolievna Marchenko, who carefully preserves the memory of her husband, L.G. Marchenko. For almost half a century, Leonid Gerasimovich's life was inseparably linked to the Saint Petersburg State Chemical-Pharmaceutical University. Here he studied from his student years, continued his education in graduate school, and then worked in the university for more than 40 years. Leonid Gerasimovich embodied the principles of academic integrity and responsibility. He always attached great importance to the quality of his work, sought perfection, and inspired his colleagues to achieve high results.
Mental Resilience and the Meaning of Life in students at the University of Patras after the end of the restrictive measures of Covid-19
Authors: Konstantopoulou Georgia , Renieri Styliani , Adamopoulou Anthi , Mavroeidi Eleni , Mentis Manolis
Published: February 2024

The Covid-19 pandemic, which shocked the entire planet, brought many changes and difficulties to the lives of students. More specifically, the lives of students in Greece were also affected by the adoption of restrictive measures and the suspension of the functioning of educational structures. Individuals try to cope and recover after periods characterized by increased risk, stress, and difficulties by showing adaptability4,8. Mental resilience, i.e. the ability of the individual to recover despite difficulties, seems especially important after the lifting of the restrictive measures for the students who are called to adapt to the new conditions and find or revise the meaning and purpose in their life 9,10. These two concepts are studied in this paper and more specifically in the research in which 141 students of the University of Patras participated. A key research result is the fact that people who stated that they faced a mental health problem showed higher levels of mental resilience than those who stated that they did not. Students over the age of 27 also showed high levels of resilience, while it appeared that gender and whether they had Covid-19 had no effect on the levels of mental resilience either. In conclusion, the levels of mental resilience in the sample were found to be moderate to high as did the levels of meaning in life.
Obstructive sleep apnea alters microRNA levels: Effects of continuous positive airway pressure
Authors: Spinale Francis
Published: February 2024

Background: Obstructive sleep apnea (OSA) has been linked to cytokine-mediated chronic inflammatory states. Continuous positive airway pressure (CPAP) is an established therapy for OSA, but its effects on inflammation remain unclear. A recent study from our group identified soluble cytokine receptors altered in OSA patients and modified by CPAP adherence. However, the upstream regulatory pathways responsible for these shifts in proinflammatory cascades with OSA and CPAP therapy remained unknown. Accordingly, this study mapped OSA and CPAP-modulated soluble cytokine receptors to specific microRNAs (miRs) and measured those miRs in patients with OSA to test the hypothesis that OSA and CPAP adherence shift cytokine-related miR expression profiles. Study Design: Plasma samples were collected from patients with OSA (n=50) at baseline and approximately 90 days after CPAP initiation and compared to referent control subjects (n=10). Patients with OSA were further divided into cohorts defined by adherence vs nonadherence to CPAP therapy. MiRs that mapped to soluble cytokine receptors of interest were quantified by PCR analysis. Results: At baseline, increased hsa-miR-15a-5p, hsa-miR-15b-5p, hsa-miR-16-5p, hsa- miR-195-5p, hsa-miR-424-5p, hsa-miR-223-3p, and hsa-miR-223-5p were observed in patients with OSA compared to controls (p<0.05). In CPAP adherent patients (n=22), hsa-miR233-3p and hsa-miR233-5p decreased at follow-up (p<0.05) whereas there was no change in miR levels from baseline in non-adherent CPAP patients (n=28). The miRs hsa-miR233-3p and hsa-miR233-5p mapped to both proinflammatory and innate immunity activation; the inflammasome. Interpretation: A specific set of miRs, including hsa-miR233-3p and hsa-miR233-5p, may serve as a marker of inflammatory responses in patients with OSA, and be used to assess attenuation of inflammasome activation by CPAP.
The Use of Plasma Volume Calculations to Manage Acute Heart Failure: History, Current Status, and Future Directions
Authors: Begos Dennis
Published: February 2024

The use of calculated formulas for plasma volume based on hemoglobin and hematocrit (H&H) and other physiologic parameters is being increasingly used to gauge prognosis in patients with heart failure. Many formulas exist, but they can be simplified into those which rely solely on H&H, and others which rely on H&H plus parameters such as weight and sex. The formulas that rely solely on H&H are the Strauss and Duarte formulas, while those which incorporate other parameters include the Hakim and Kaplan formulas. There is now a large body of evidence that demonstrates these simple formulas can convey prognosis and may be valuable as a prospective measurement to guide therapy. This review lays out the evidence for using plasma volume calculations in patients with heart failure and the benefits that can be derived from utilizing them in the management of heart failure.
Factors Affecting the Utilization of Maternal and Child Health Services in Urban Primary Health Care Centers in Enugu State (Abakpa and Uwani)'
Authors: Joachin Muoneke , Okoye Augustine , Yvette Nebonta , Thomas Nmezi , Kosisochukwu Ngokere , Emesobum Munachimso , Samuel Ejikeme , Chinedu Okereke , Kenechukwu Nzeako
Published: February 2024

10.18103/mra.v12i1.5064 Background/Aim: Poor Maternal and Child Health service indicators have been a recurring Public Health challenge in Nigeria since the documentation of National Maternal, Newborn, and Child Health (NMNCH) statistics began in the early 1990s. This study was aimed at identifying the factors that affect the utilization of Maternal and Child Health services among women of childbearing age attending urban Primary Health Care centers in Enugu State (Abakpa and Uwani). Methodology: This was a retrospective and descriptive cross-sectional study and data was collected through a self-administered questionnaire. 296 respondents participated and analysis of data was done using Statistical Package for Social Sciences (SPSS) version 20.0. The findings revealed that the number of deliveries in the health centers was highest in 2018 with a total of 378 deliveries compared to 2016 & 2017 with 280 and 254 deliveries respectively. The total number of under 5 children receiving yellow fever/ measles vaccine in the health center increased throughout the years with a total of 1493 vaccinations in 2016, 1510 in 2017, and 2083 in 2018. Results: It was also observed that the main factors that enhanced Maternal and Child Health (MCH) services in the health centers were decreased maternal age, maternal educational status, affordability of services rendered, good attitude of health workers, and the proximity of both health centers to the homes of the respondents. On the other hand, increased maternal age, poor maternal education, high parity, and long waiting hours experienced by the patients were the major factors hindering the utilization of services rendered in the health centers. Conclusion: To improve utilization of MCH services as identified by the women include; advocacy and sensitization campaigns, community dialogue, and upgrading of the existing health care centers.
Mechanisms associated with endosperm modification in quality protein maize
Authors: González-Núñez David Guillermo , Pineda-Hidalgo Karen Virginia , Salazar-Salas Nancy Yareli , López-Valenzuela José Angel
Published: February 2024

Protein quality maize (QPM) combines the protein quality of the opaque-2 (o2) mutant with a vitreous endosperm. These characteristics have allowed breeding programs worldwide to produce QPM genotypes that help alleviate malnutrition of people in developing countries from Africa, Asia and Latin America with a cereal-based diet. However, the development of these materials has been inefficient due to the limited knowledge about the molecular basis of the conversion of the soft o2 endosperm into a vitreous phenotype in QPM. This conversion has been associated with an increase in small protein bodies rich in 27 kDa γ-zein, the synthesis of starch with a higher proportion of amylose and short-intermediate amylopectin chain branches that favors the compaction of the starch granules, as well as alterations in the amyloplast envelope that favors the interaction between starch granules and protein bodies. Additional studies about the mechanisms involved in the modification of the endosperm in QPM will contribute to produce materials with good agronomic characteristics and protein quality.
Cambios bioquímicos y morfométricos en Coffea arabica posterior a un tratamiento con metanosulfonato de etilo
Authors: Joya Dávila José Gregorio , Gutiérrez Miceli Federico Antonio , Luján Hidalgo María Celina , Serrano Gómez Leslie Alondra , Ruíz Sesma Benigno
Published: February 2024

El uso de metanosulfonato de etilo (EMS) es una tecnología utilizada para aumentar la variabilidad genética de cultivares. En el mejoramiento genético del cafeto, EMS podría generar nuevos rasgos fenotípicos y bioquímicos de importancia agrícola. El objetivo de la presente investigación fue determinar los cambios en la morfología y producción de metabolitos secundarios en plantas de cafeto generadas a partir de líneas celulares tratadas con EMS. Callos de Coffea arabica cv., Borbón fueron expuestos a nueve concentraciones de EMS, posteriormente, se determinó el porcentaje de supervivencia y la biomasa fresca. Se regeneraron plantas en medio MS suplementado con vitaminas, antioxidantes y 6-bencilaminopurina. A las 20 semanas se registraron cambios morfológicos observados con respecto a los callos no tratados con EMS. Empleando hojas secas se hizo la extracción de metabolitos secundarios, la cuantificación se realizó mediante cromatografía líquida de alta resolución. La supervivencia y crecimiento del callo disminuyó con el aumento de la concentración de EMS (dosis letal media: 148.8 mM), en plántulas generó cambios en la morfología de la hoja, enanismo y la formación de tres meristemas, que aumentarían el número de hojas. Finalmente, 140 mM de EMS incrementó el contenido de cafeína, ácido cafeico y ácido clorogénico.
Bibliographic Review of Aquatric Systems and their Relevance to the Ivory Coast, a Sub-Saharan African Country
Authors: Koco Nobah Céline Sidonie , Barthélemy Koffi Kouakou , Constantine Kouakou Affoué
Published: February 2024

Through a review of aquaponic techniques, the present work highlights the interest aroused by this practice in the world as well as different modes of exploitation. Aquaponics is defined as a coupling between a recirculated aquaculture compartment and an aboveground crop compartment. Since two decades, it has been the subject of a significant economic activity in Canada, the USA, Australia and induces numerous research activities. This system is subdivided into three (3) major techniques which are the culture techniques on bed of inert substrates, on nutritive film and that of rafts. Aquaponics is the subject of profitable industrial economic activity on both large and small scale in the USA and Canada. Given the benefits of low water consumption, the non-use of fertilizers and pesticides, aquaponics is unquestionably according to researchers and users, the system capable of revolutionizing livestock farming and agriculture around the world. Côte d'Ivoire is suffering not only from the consequences of climate change but also from rapid urbanization, with the consequent change in water resources. Aquaponics deserves to be mastered then popularized in this country, to help produce fish and plants of better quality while avoiding the waste of water caused by traditional livestock systems.
The Role of Macroeconomic Variables in Forecasting Equity Market Volatility in the East Aftican Community
Authors: Sheng Lin Wen , Jade Mutebi
Published: February 2024

This study delves into the dynamic relationship between macroeconomic variables and equity market volatility in the East African Community. The research employs the Generalized Autoregressive Conditional Heteroskedasticity (GARCH) model coupled with the Mixed Data Sampling (MIDAS) approach. Through a comparative process, it is found that the different macroeconomic variables exhibit heterogeneous effects on the different countries in the East African community that is macroeconomic factors significantly explain the variation in stock market volatility in Uganda and including these factors in the GARCH MIDAS model improved its forecasting ability, however, for Kenya it was found that majority of the macroeconomic variables had insignificant effects on stock market volatility and didn’t improve the forecasting ability of the GARCHMIDAS model.
Persistance des Séquences Pluvieuses et Risque d’Inondation en Côte d’Ivoire de 1971 à 2022
Authors: Coulibaly Kolotioloma Alama , N’Da Kouadio Christophe , Sylla Daouda , Dibi-Anoh Pauline Agoh , Goula Bi Tié Albert
Published: February 2024

Avec le réchauffement climatique mondial, les inondations sont devenues plus récurrentes en Afrique de l’Ouest, particulièrement en Côte d’Ivoire. Ainsi, la présente étude vise à estimer la contribution de la persistance des séquences pluvieuses dans l’accroissement des risques d’excès pluviométrique en Côte d’Ivoire. Pour cela, les données journalières de 1971 à 2022 des 14 stations synoptiques de la Direction de la Météorologie Nationale de Côte d’Ivoire sont utilisées. L’approche méthodologique comporte les chaînes de Markov, la loi de Gumbel et l’analyse fréquentielle des pluies journalières extrêmes. Les résultats indiquent qu’il y a plus de chance qu’il pleuve au nord et à l’ouest de la Côte d’Ivoire si la veille est sèche. En revanche, au centre, sud et le littoral, c’est lorsque la veille est pluvieuse que la probabilité de pluie est élevée. Cette probabilité est plus forte au nord-ouest et sur le littoral qu’au centre et sud. Au nord et à l’ouest de la Côte d’Ivoire, la période juillet à septembre enregistre 74,5 à 84,6% des années à pluie extrême alors que sur le littoral, c’est 61,5 à 76,9% durant la première saison pluvieuse d’avril à juin. Au centre et sud ivoiriens, ce sont 21,2 à 58,3% des années qui ont des pluies maximales entre avril et novembre. Les excès pluviometriques enregistrés pendant les périodes pluvieuses augmentennt le rique d‘inondation en Côte d’Ivoire même pour des pluies normales à durée de retour inférieure à six ans. With global warming, floods are become more recurrent in West Africa, particularly in Cote d’Ivoire. Thus, this study aims to estimate the contribution of the persistence of rainy spells in the increasing risks of excess rainfall in Cote d’Ivoire. For this, daily rainfall data from 1971 to 2022 for 14 synoptic stations of National Metgeorological Service of Cote d’Ivoire are used. The methodological approach includes Markov chains, Gumbel's law and frequency analysis of extreme daily rainfall. The results indicate that there is a greater chance of rain in the north and west of Cote d’Ivoire if the day before is dry. However, in the centre, south and coastal, it is when the day before is rainy that the probability of rain is high. This probability is higher in the northwest and on the coastal than in the centre and south. In the north and west of Cote d’Ivoire, period from july to september records 74.5 to 84.6% of years with extreme rain while on the coastal, it is 61.5 to 76.9% during the first rainy season from april to june. In the centre and south of Cote d’Ivoire, 21.2 to 58.3% of years have maximum rainfall between april and november. The excess rainfall recorded during rainy seasons increase the risk of flood in Cote d'Ivoire even for normal rains with a return period less than six years.
Hábitos de estudio y rendimiento académico universitario. El poder predictivo de los exámenes on-line
Authors: Gamero-Burón Carlos
Published: February 2024

Introducción: La adopción de hábitos de estudio eficientes resulta de gran importancia para conseguir el éxito académico ante un panorama formativo cada vez más exigente. Objetivo: Se ha investigado la relación entre hábitos de estudio y rendimiento académico entre alumnos universitarios. Método: Se ha tomado como indicador sobre hábitos el comportamiento del alumnado respecto a exámenes on-line. A partir de un muestreo estratificado, se ha obtenido una muestra aleatoria compuesta por 160 estudiantes matriculados en dos grupos de primer año del Grado en Administración y Dirección de Empresas (ADE) en la Universidad de Málaga. Se aplican diversas técnicas de análisis cuantitativo: análisis estadístico descriptivo y de inferencia estadística con base en la estimación de modelos de regresión lineal y no lineales. Resultados: Los resultados obtenidos apuntan a que los alumnos que tardan en contestar esas pruebas obtienen peores notas en esos exámenes y en los futuros, una probabilidad inferior de presentarse al examen final de la asignatura y peores notas en este último examen. Discusión: El conjunto de evidencias obtenidas pone en valor la preocupación por los hábitos de estudio adoptados por los alumnos de enseñanza superior. En gran medida, el alcance del objetivo perseguido por la inversión en educación puede verse comprometido si los estudiantes no adoptan estrategias de estudio que les permitan alcanzar las metas establecidas en los programas de las asignaturas cursadas. La adopción de estrategias de aprendizaje no adecuadas puede cortocircuitar la línea que vincula tal inversión con el rendimiento escolar.
Estilos de aprendizaje en relación al rendimiento académico en modalidad virtual de estudiantes de carreras del área de la salud
Authors: Astudillo-Araya Ángela , Espinoza-Espinoza Marcela , Sandoval-Contreras Braulio
Published: February 2024

Introducción: La pandemia por coronavirus obligó a adaptar procesos pedagógicos, surgiendo la necesidad de adecuar estrategias de enseñanza y aprendizaje. Objetivo: Identificar los estilos de aprendizaje en educación virtual de estudiantes de carreras del área de salud de la Universidad del Bío-Bío, en contexto de pandemia por COVID-19. Método: Mediante un muestreo aleatorio estratificado se evaluó a 409 estudiantes de las carreras de Nutrición y Dietética, Enfermería y Fonoaudiología. El instrumento para determinar los estilos de aprendizaje fue “CHAEA-32”. Además, se aplicó un cuestionario para caracterización sociodemográfica. Resultados: El estilo de aprendizaje más frecuente fue el Reflexivo (37.7%), seguido por el Teórico (24.4%), el Activo (16.4%), Pragmático (11.7%) y el Indefinido (9.8%). No existe relación significativa entre estilos de aprendizaje y las variables “rendimiento académico” y “sexo”; con la variable “carrera en curso” existe relación significativa sólo con los estilos Teórico y Reflexivo. Discusión: Es satisfactorio que el estilo de aprendizaje más frecuente sea el Reflexivo, tal como se suele observar en educación presencial, porque los estudiantes demuestran ser analíticos, prudentes y observadores, acorde con el perfil del estudiante del área de la salud. Los resultados sugieren la replicabilidad en contexto virtual de algunas estrategias usualmente empleadas en la presencialidad.
Del movimiento social al poder político. Un acercamiento a los partidos feministas
Authors: Jareño Gila Claudia
Published: February 2024

El objetivo del presente artículo es doble: por un lado, estudiar los orígenes del Partido Feminista Unificado francés y del Partido Feminista de España, cuya historia se inserta dentro de la segunda ola feminista, momento de irrupción masiva de las mujeres en el espacio público. El texto se propone así estudiar las aportaciones y debates que plantearon en el momento de su creación como la toma del poder por parte de las mujeres, así como los vínculos que unieron a ambas formaciones, lo que da testimonio de la importancia de los contactos personales y de las redes internacionales en la formación y desarrollo de los feminismos. Por otro lado, analizar los debates presentes sobre estas formaciones en un contexto de dinamismo del movimiento feminista y de auge de la extrema de derecha tanto en Francia como en España. Al combinar una perspectiva diacrónica y sincrónica de los debates generados en el seno de estas formaciones, se establece un diálogo pasado-presente sobre algunas de las cuestiones que han atravesado el movimiento feminista desde el último tercio del siglo XX hasta nuestros días, como la participación política de las mujeres o el sujeto del feminismo. Este enfoque permite rastrear y rescatar la historia de los partidos feministas, así como insertar los debates feministas actuales sobre estas formaciones dentro de la memoria histórica colectiva del movimiento feminista.
Fundación Wolters Kluwer. La jueza Ruth Bader Ginsburg. Una semblanza jurídica en femenino plural
Authors: Torres Díaz María Concepción
Published: February 2024

Este artículo reseña: Fundación Wolters Kluwer. La jueza Ruth Bader Ginsburg. Una semblanza jurídica en femenino plural. Pamplona: Fundación Aranzadi La Ley, 2021.
MODIFICATION OF BLASTING GEOMETRY TO INCREASE BLASTING EFFECTIVENESS IN QUARRY
Authors: Sulistiyono B , Nugraheni F , Wibowo M A , Musyafa A
Published: February 2024

It is thought that a technique for carrying out blasting operations for rock extraction must be both effective and secure. It is intended that the blasting will be both safe and able to meet the needs of the stockpile material because the blasting area is adjacent to residential areas. This study intends to determine the cost and duration of the rock excavation work by blasting at the Trenggalek Tugu Dam Construction Project, as well as the effectiveness brought about by the implementation of modified blasting geometry. The inquiry was supported by descriptive and comparative methodologies. For this study, both quantitative and qualitative data were required. Quantitative data was gathered using working drawings, tool specifications, and material specifications; qualitative data was gathered using work procedures, specifications, and islands for related jobs. Quantitative information is obtained through the analysis of papers written by consultants and service providers. To acquire qualitative power, interviews with subject-matter experts and literature research were conducted. Because the work can be done more rapidly than with the prior geometry and because doing so has a lower cost analysis, the results reveal that using the modified geometry is more cost-effective than using the prior blasting geometry. Utilizing a combination of blasting geometry using the CJ Konya method and ICI-Explosive, there was a 9.3% acceleration in task execution and a 1.133% cost efficiency of the contract value (Trial & Error).
OPTIMIZATION OF THE MRICA RESERVOIR MANAGEMENT AT BANJARNEGARA REGENCY USING A DETERMINISTIC DYNAMIC PROGRAM (FOR ELECTRICITY PRODUCTION AND IRRIGATION WATER)
Authors: Sastrawan A , Makrup L , Ruzardi R , Fadilah S
Published: February 2024

Siltation becomes the Mrica reservoir’s main problem that causes the reduction of the effective storage capacity of the dam, so it cannot function properly. This research aims to obtain the optimal Reservoir Operating Rules that can produce maximum electrical power in hydropower and fulfill the irrigation water requirements as designed according to the existing reservoir capacity. The optimization method used in this research is a Deterministic Dynamic Program, assuming the event occurs as a certain occurrence. In this procedure, the existing constraints divide into multi-stages with decision variables at each stage. The analysis starts from a backward to a forward recursive to get the water storage and release maximum used as a recommendation to design the effective Reservoir Operation Rules. It was simulated using three scenarios, including Scenario 1 (Q IR optimization=actual); Scenario 2 (Q IR optimization=design); and Scenario 3(Q IR generate optimization=demand). Based on the benchmarking analysis results, the percentage of design, actual, and optimized Reservoir Operation Rules were 98.08%, 98.29%, and 99.04%, respectively, which indicates the design Reservoir Operational Rules performance is not better than others. Besides that, Scenario 2 has the highest profit of Rp 76350527181 and fulfills regulation No. 7 of 2004 concerning water resources.
EXCAVATABILITY METHOD BASED ON ENGINEERING GEOLOGY CONDITIONS IN THE CONSTRUCTION OF RUKOH DAM SUPPLETION TUNNEL, INDONESIA
Authors: Harwinda Z B , Wilopo W , Indrawan I G B
Published: February 2024

Determination of excavation technique was one of the essential factors in tunnel construction stability. It also had an impact on the efficiency of the construction phase. However, in the Detail Engineering Design of the Rukoh Dam Suppletion Tunnel, there was no study of the most optimal excavation technique in the construction phase. This study aimed to assess the efficiency of excavation capabilities based on engineering geology conditions. The parameters used in this study are RMR values, GSI values, If-index (discontinuity spacing), Point Load (Is50) values, and Excavation Power Index (EPI). The excavatability classification used the method developed by Abdullatif and Cruden, Pettifer and Fookes, and Tsiambaos and Saroglou. The procedure for evaluating efficiency used the EXCASS system. The tunnel’s rock mass quality was poor calcareous siltstone. The excavation method in the tunnel was the top heading and bench with a stand-up time of 10 hours for a 2.5 m span. Based on the result, the most optimal excavation technique used was the easy ripping method for zones 1 and 4, while the digging method was for zones 2, 3, and 5. Even though the recommendations were classified, project cost efficiency studies are required to bolster the recommendations.
SEISMIC GROUND RESPONSE ANALYSIS FOR LIQUEFACTION ASSESSMENT IN BUNAKEN, NORTH SULAWESI, INDONESIA
Authors: Majid R E , Faris F , Rifa’i A
Published: February 2024

Bunaken Island is a quaternary deposit of Holocene age. Dominating sand layers, shallow groundwater table, and near active fault locations make the area highly susceptible to liquefaction. This study aims to determine the minimum ground acceleration that can potentially trigger liquefaction in the area. In this study, earthquakes originating in the North Sulawesi Thrust were modelled with various magnitudes. PGA was calculated using the attenuation function from : Liu and Tsai (2005), Abrahamson et al. (2016), Atkinson and Boore (2003), and Zhao et al. (2006). Each earthquake parameter was analyzed for its liquefaction potential using the simplified procedure by Idriss and Boulanger (2008), and then the minimum earthquake parameter value that can cause liquefaction was determined. The analyses show that the study site has the potential for liquefaction if more than Mw 5.8 earthquake occurs with a PGA value of above 0.17g. The BKN-BH02 borehole is the most critical point of the four boreholes made at the study site.
IDENTIFYING URBAN FLOODS BASED ON HEC-RAS, SWMM, AND GOOGLE EARTH ENGINE
Authors: Prastica R M S , Shulthony M A N , Kinanti A P
Published: February 2024

Urban water-related disasters are a commonly occurring event including in Indonesia. According to recent news, a watershed in South Sumatera submerged due to heavy rainfall and other factors. This study focuses on the Musi River, Palembang. It studied the two alternatives of flood mitigation in the Musi River system, namely hydraulics modification and green infrastructure landscape. The research methodology of the paper covers hydrological analysis, hydraulics, and slope stability calculation by using Google Earth Engine, 1-D HEC-RAS and Geo-Studio software, and green infrastructure simulation by employing SWMM analysis. The hydraulics modification appears to be able to lessen the flood in the watershed with a 100% reduction. Meanwhile, green infrastructure installation provides a 12.5% reduction in water volume in the study area. The government could opt after dealing with their infrastructure budgeting and environmental condition.
ANALYSIS OF BORED PILE FOUNDATION IN POTENTIALLY LIQUEFIED SOIL (CASE STUDY: ANUTAPURA MEDICAL CENTER BUILDING)
Authors: Septiadi D R , Hardiyatmo H C , Faris F
Published: February 2024

Pile foundations placed until hard soil layer and passed through a liquefied layer can be a mitigation effort against liquefaction hazards to buildings. Nevertheless, liquefaction can still impact the stability of the pile. The Anutapura Medical Center (AMC) building at the Anutapura General Hospital complex, Palu city, is a building that is planned to be built on potentially liquefied soil. The foundation of the building was planned to use bored pile foundations to mitigate the possibility of liquefaction. This study aims to analyze and compare the stability of the bored pile group foundation of the AMC building under non-liquefaction and liquefaction soil conditions. The study was conducted by manually calculating the bearing capacity of the bored pile based on soil data. Further analysis was carried out by modeling the pile foundation using Geo5 Pile Group to determine the deformation and internal forces acting on the pile group. The analysis was carried out in 2 cases, i.e., non-liquefaction and liquefaction conditions. The results show differences in the bearing capacity, deformation, and internal forces in non-liquefaction and liquefaction soil conditions. The study results are expected to be a reference and consideration in designing pile foundations in liquefaction-prone locations.
WATER INFRASTRUCTURE IN ANCIENT CITY OF TROWULAN MAJAPAHIT. A LESSON FROM THE PAST FOR PLANNING A NEW CAPITAL CITY OF INDONESIA
Authors: Nurmiyanto A , Siswoyo E , Hakim L
Published: February 2024

Indonesia plans to move its capital city from Jakarta on the island of Java to a jungle city on the island of Borneo called Nusantara. However, a large sceptical arose when planning a smart and sustainable city from scratch. This paper examines in a broad manner of water infrastructure situation during the ancient period of Indonesia, Majapahit period from the historical literature. The present paper aims to show the water management and sanitation practices from Trowulan peoples which have survived and managed their civilization in harmony with nature over a century. The results suggest that water infrastructure in Trowulan city not only used for agricultural purposes (irrigation) but also used for environmental protection such as drainage and flood control. We believe by reconsidering the historical approaches to water management of Trowulan people and applying modern technologies to improve its functionality is expected to give a solution to current water-related environmental problems in Nusantara the new capital city of Modern Indonesia.
PROFILE OF NITRATE CONCENTRATION IN GROUNDWATER IN WINONGO WATERSHED AREA OF YOGYAKARTA CITY, INDONESIA
Authors: Juliani A , Hanifah N H , Rahmawati S , Wantoputri N I
Published: February 2024

The mostly occurring case of anthropogenic source for nitrate contamination in groundwater especially in developing countries is domestic sewage. Hence, many cases of the presence of nitrate in groundwater are always correlated with the poor quality of wastewater management system. Since 2008 Yogyakarta area in Indonesia has improved its wastewater management system which should also improve the groundwater quality. This paper will discuss the recent condition of groundwater quality in Yogyakarta City area which focused on nitrate and its association to contamination from sewage after the improvement of sewage management system. Chloride concentration was measured and its ratio to nitrate was calculated to examine this association. Analysis of 32 groundwater samples showed the range of nitrate-N concentration from 3.6 to 42.56 with average of 9.97 mg/L. Meanwhile, chloride concentration ranged from 15.82 to 35.85 with average of 23.79 mg/L. The ratio of N to Chloride exceeds 1 only at 1 sampling to the same cluster. This indicates that the nitrate in groundwater in this study may not originated from domestic sewage. Hence, the effort to improve wastewater management systpoint. In addition, Hierarchical Cluster Analysis showed that nitrate and chloride did not belongem has given positive impact to groundwater quality.
NF-κB as an Inducible Regulator of Inflammation in the Central Nervous System
Authors: Anilkumar Sudha , Wright-Jin Elizabeth
Published: February 2024

The NF-κB (nuclear factor K-light-chain-enhancer of activated B cells) transcription factor family is critical for modulating the immune proinflammatory response throughout the body. During the resting state, inactive NF-κB is sequestered by IκB in the cytoplasm. Proteasomal degradation of IκB activates NF-κB, mediating its translocation into the nucleus to act as a nuclear transcription factor in the upregulation of proinflammatory genes. Stimuli that initiate NF-κB activation are diverse, but are canonically attributed to proinflammatory cytokines and chemokines. Downstream effects of NF-κB are cell type specific and, in the majority of cases, result in activation of pro-inflammatory cascades. Acting as the primary immune responders of the central nervous system, microglia exhibit upregulation of NF-κB upon activation in response to pathological conditions. Under such circumstances, microglial crosstalk with other cell types in the central nervous system can induce cell death, further exacerbating the disease pathology. In this review, we will emphasize the role of NF-κB in triggering neuroinflammation mediated by microglia.
A Conceptual Framework to Analyze Urban Digital Twins Interoperability
Authors: Traoré Mamadou Kaba
Published: February 2024

Infrastructure and urban network operators, city users and industrialists are faced with complex issues to ensure the sustainability of the service, maintain, operate and develop their urban sys-tems, while integrating environmental, economic and societal impacts and being resilient to un-expected geopolitical and climatic upheavals. Urban Digital Twins (UDTs), i.e., digital twins for smart cities and territories are considered as promising tools that can enable all stakeholders to collaborate across disciplinary silos and foster digital transformation in urban and territorial pro-jects to ensure sustainability, resilience and increased inventiveness. However, a widely acknowledged challenge to address in the application of UDTs is the lack of interoperability. One significant barrier is the difficulty that stakeholders have in understanding the level of complexity hidden behind this challenge, and thus the adoption of an adequate interoperability technique. This paper proposes a conceptual framework, which is unique for understanding the various lev-els of interoperability required in deploying and using the full potentials of UDTs. We show how such a high-level modeling approach supports the symbolic manipulation of UDTs interoperabil-ity notions and requirements, and thus eases the design of appropriate solutions for large-scale in-teroperable UDTs.
DURABILITY OF ASPHALT CONCRETE MIXTURE (AC-WC) USING CRUMB RUBBER WASTE AS AN ADDITIONAL MATERIAL AND PALM FRUIT ASH AS FILLER
Authors: Rhoma Putra Benny Hamdi , Malik Alfian , Hidayati Ermi , Ridho Prakasa Rizqy , Elianora Elianora
Published: February 2024

The mixture of road pavement layers that is commonly used in Indonesia is a mixture of Asphalt Concrete (AC-WC). Addition of wastecrumb rubber (crumb rubber) in asphalt concrete mixture is a solution for highway planning and reducing waste pollutioncrumb rubber (crumb rubber) produced from a rubber tire factory. The purpose of this research is to determine the maximum percentage addition crumb rubber (crumb rubber) in the AC-WC mixture withfiller palm fruit bunch ash and to determine the residual strength index (RSI) value of the mixture which has a durability value that meets the requirements of General Specifications for Highways 2018 Revision 2. This study uses bitumen content with the percentage of mixed wastecrumb rubber used in the determination of OAC of 0%, 3%, and 6% by weight of asphalt andfiller palm fruit bunch ash 4% by weight of one AC-WC sample. The results of this study indicate testing marshall on variations crumb rubber 0% (without crumb rubber) as a normal mixture and 3% has met the specifications while the 6% variation does not. Maximum test results on the combination crumb rubber 3% resulted in the highest stability value of 1,028.85 kg at 0.5 hour immersion. The results of the durability test showed that the RSI value with a variation of 0% and 3% only fulfilled the 3 hour immersion time.
Анализ динамики эпидемического процесса COVID-19 в мире за неделю с 27.01.2024 г. по 02.02.2024 г.
Authors: Зимирова Анастасия , Поспелов Михаил , Иванова Александра , Дмитриева Людмила , Чумачкова Елена , Карнаухов Игорь , Щербакова Светлана , Кутырев Владимир
Published: February 2024

В обзоре представлен анализ эпидемиологической ситуации в странах мира по COVID-19 за неделю с 27.01.2024 г. по 02.02.2024 г.
Segenggam Emas Penuh Harapan Di Era Pandemi
Authors: Setiawan Hamzah
Published: February 2024

Rasa syukur selalu tercurah kepada Allah SWT yang senantiasa melimpahkan rahmat, hidayah serta kesehatan, sehingga kami dapat melaksanakan program Kuliah Kerja Nyata Tangguh (KKN-Tangguh) Universitas Muhammadiyah Sidoarjo tahun 2020. Kuliah Kerja Nyata (KKN) adalah program yang ditempuh mahasiswa Universitas Muhammadiyah Sidoarjo merupakan perwujudan dari salah satu Catur Dharma Perguruan Tinggi, yaitu bermaksud memberikan pengalaman secara langsung baik fisik maupun mental kepada calon sarjana dengan terjun bersama masyarakat dengan menerapkan ilmu jurusan masing-masing
Train Survive People At Times Pandemic
Authors: Setiawan Hamzah
Published: February 2024

Rasa syukur selalu tercurah kepada Allah SWT yang senantiasa melimpahkan rahmat, hidayah serta kesehatan, sehingga kami dapat melaksanakan program Kuliah Kerja Nyata Tangguh (KKN-Tangguh) Universitas Muhammadiyah Sidoarjo tahun 2020. Kuliah Kerja Nyata (KKN) adalah program yang ditempuh mahasiswa Universitas Muhammadiyah Sidoarjo merupakan perwujudan dari salah satu Catur Dharma Perguruan Tinggi, yaitu bermaksud memberikan pengalaman secara langsung baik fisik maupun mental kepada calon sarjana dengan terjun bersama masyarakat dengan menerapkan ilmu jurusan masing-masing