bluuebunny/crossref_metadata_2025 huggingface dataset:
Caracterización fisiológica y molecular de Microbacterium paraoxydans aislada de pozas de Cuatrociénegas, Coahuila
Authors: Salinas-Jasso Thalía Athenas , Moreno- Dávila Ileana Mayela M. , De León-Zapata Miguel Ángel , Soria-Ortiz Alma Idalia
Published: March 2024

El valle de Cuatrociénegas posee una importante reserva ecológica compuesta por diversas pozas y dunas ricas en sales de calcio y magnesio. La biocenosis perteneciente al valle presenta un alto nivel de endemismo y biodiversidad. Esta diversidad microbiana es de interés biotecnológico debido a los diversos mecanismos metabólicos que emplean estos microorganismos para adaptarse y crecer en las condiciones desérticas extremas. El objetivo del estudio fue caracterizar fisiológica y molecularmente una bacteria aislada de una poza deCuatrociénegas, conocer su capacidad enzimática y determinar su potencial biotecnológico.Se caracterizó morfológicamente, se determinaron crecimientos óptimos de pH, temperatura y concentraciones de sales; se estudió su capacidad enzimática y producción de metabolitos por HPLC; se identificó por la técnica de reacción de la polimerasa (PCR); se realizó la separación de proteínas mediante electroforesis en gel de poliacrilamida (1D SDS-PAGE),y una búsqueda de enzimas. El análisis por PCR indicó que corresponde a Microbacteriumparaoxydans. Es un bacilo Gram positivo, con pigmentación amarilla. Creció en un amplio rango de temperaturas (15 a 37 °C), de pH (5 a 9), y concentraciones de sales de hasta 5%, se considera halófila moderada. Fermentó glucosa, sacarosa y manitol; positiva parala enzima lisina descarboxilasa. El cromatograma del HPLC mostró dos señales, que corresponden al ácido pirúvico y/o ácido cítrico y un carotenoide. El gel 1D SDS-PAGEmostró bandas proteicas con pesos moleculares de 20 a 250 kDa. Estos microorganismos producen diversos metabolitos con potencial para el desarrollo de nuevos bioproductos obioprocesos.
Optimización de extracción de ADN de polen apícola para caracterización molecular
Authors: Wei Lihua , Mendoza-Villareal Rosalinda , Solano-Sánchez Jazmín , Ibarra-Rivera Ana Sofia , Pacheco-Reyes Flor Cristina , Perez-Rodriguez Miguel Angel
Published: March 2024

El origen botánico del polen apícola es clave en sus propiedades nutricionales, sin embargo, su determinación por análisis microscópico demanda experiencia y tiempo. Otro método rápido de identificación es el uso códigos de barras de ADN, los cuales permiten la determinación de la especie de una muestra biológica a través de secuencias estandarizadas de ADN. Sin embargo, esta técnica requiere ADN lo suficientemente puro para realizar la amplificación y secuenciación de ADN. En este trabajo, se comparó el efecto de diferentes variaciones de tres pasos (tiempo de incubación, numero de lavados y el solvente para precipitación de proteínas) en un método de extracción basado en CTAB para extraer ADN genómico de polen apícola. El análisis de varianza reveló que el tiempo de incubación no afectó el rendimiento de ADN, mientras el número de lavados tiene un efecto critico negativo en el rendimiento de ADN. Adicionalmente, el solvente de precipitación de proteínas también tuvo un efecto significativo en el rendimiento de ADN, el cual alcanzó valores más altos usando cloroformo:alcohol isoamilico (24:1). Para saber si las variaciones en los pasos de extracción afectan los análisis moleculares subsecuentes, se realizó una PCR de verificación con todas las muestras extraídas, obteniendo amplificaciones exitosas del fragmento ITS2 en todos tratamientos y la identificación precisa de 11 especies de plantas. Este estudio provee información importante para la extracción de ADN de alta calidad, y provee bases sólidas para realizar códigos de barras, detección de especies invasivas, transgénicas o tóxicas en muestras de polen apícola.
Aplicación de nanopartículas de óxido de zinc y cloruro de sodio en chile pimiento
Authors: Magdaleno-García Guadalupe , Juárez-Maldonado Antonio , Betancourt-Galindo Rebeca , González-Morales Susana , Sánchez-Vega Miriam , Cabrera-De la Fuente Marcelino , Méndez-López Alonso
Published: March 2024

Las nanopartículas de óxido de zinc (NPs ZnO) han llamado la atencióndebido a sus propiedades benéficas y a que pueden aplicarse en la agricultura como nanofertilizantes, nanoreguladores de crecimiento y para mejorar parámetros de calidad. El uso de euestresores como cloruro de sodio (NaCl) puede mejorar lacalidad de varios cultivos de hortalizas con especial interés en atributos de calidad del fruto. El objetivo de esta investigación fue evaluar los efectos del NaCl comoeustrés y NPs ZnO sobre el crecimiento y calidad de chile pimento. Se evaluaron 10 tratamientos: aplicación de NPs de morfología esférica y hexagonal en dosis de 50 y 100 mg L−1 con y sin aplicación de NaCl (50 mM), más testigo salino y testigo absoluto. Se evaluaron variables agronómicas: como altura de la planta (AP), diámetro del tallo (DT), peso seco de la raíz (PSR) y planta (PSP), peso de frutos por planta (PFP) y variables de calidad de fruto como: firmeza, pH, conductividad eléctrica (C.E), solidos solubles totales (SST), acidez titulable (AT), potencial óxido-reducción (ORP) y vitamina C. Los resultados muestran que los tratamientos con nanopartículas a 50 y 100 mg L−1 aumentaron los parámetros de AP, PSR, PSP y PFP, la morfología hexagonal mejoró AP, PSR y PSP, la combinación de NaClmás NPs aumentaron el PSP y PFP, en parámetros de calidad de fruto el NaCl mejoró la firmeza y ORP, las NPs resultaron favorables para la calidad, aunque la forma esférica y hexagonal produjeron efectos similares.
Fertilización potásica en líneas mejoradas y material criollo de chile soledad (Capsicum annuum L.)
Authors: Ramírez-Seañez Ana Rosa , Alfonso-García José Mauricio , Hernández-Hernández Hipólito , Palacios-Torres Rogelio Enrique , Ramírez-Meraz Moisés , Borroel-García Victoria Jared
Published: March 2024

El potasio es considerado uno de los fertilizantes más importantes puesto que incide directamente en funciones fisiológicas esenciales de los cultivos, la aplicación inadecuada de este elemento y el uso de semilla criolla suelen repercutir en la calidad y rendimientos de diversos cultivos. El objetivo de la presente investigación fue evaluar el efecto de dos dosis de fertilización potásica: Fertilización uno: 260N-60P-440K-40Ca-30Mg y Fertilización dos: 260N-60P-340K-40Ca-30Mg en la morfología, calidad de fruto y rendimiento en líneas mejoradas y material criollo de chile soledad bajo condiciones de temporal. Se establecieron seis tratamientos T1: Fertilización 1 P15, T2: Fertilización 2 P15, T3: Fertilización 1 P13 y T4: Fertilización 2 P13 y dos testigos: T5: Fertilización 1 Material criollo, y F6: Fertilización 2 Material criollo. El diseño experimental fue parcelas divididas completamente al azar, con cuatro repeticiones. La línea mejorada P15 (CHISER-522) con la fertilización dos, obtuvo los mejores resultados de rendimiento por planta y total con 489.43 g y 14.77 t ha-1, respectivamente, además, en la morfología: altura de planta 77.73 cm, diámetro de tallo 14.78 mm, ancho de copa 64.43 cm, excepto en el número de ramificaciones. Para la calidad de fruto en la clasificación frutos de tamaño grande, las plantas con el tratamiento Fert 1 P15 obtuvieron los mejores resultados de peso, longitud y diámetro con 8.60 g, 9.83 cm y 13.06 mm respectivamente. La línea mejorada P15 en combinación con la fertilización con dosis baja de potasio mostró efectos significativos en la morfología y rendimiento de este cultivo.
Estructura, diversidad y estimación de carbono de un ecotono entre matorral espinoso tamaulipeco y submontano
Authors: Carranza-Guerrero Ana Karen , Alanís-Rodríguez Eduardo , Patiño-Flores Ana María , Mora-Olivo Arturo , Molina-Guerra Víctor Manuel
Published: March 2024

El ecotono es de gran importancia dado los servicios ambientales que prestan tanto al ambiente como al ser humano. El objetivo fue conocer la estructura y la composición florística en una zona de contacto entre dos tipos de matorrales y conocer además el potencial que tiene como sumidero de carbono. Se determinaron los índices de valor de importancia, distribución vertical de especies, Margalef, Shannon y la diversidad verdadera de Shannon. Además de la biomasa, área total y la concentración de carbono. Se registraron 11 especies de plantas vasculares, la familia mejor representada fue Fabaceae. La especie Cordia boisieri tuvo el mayor índice de valor de importancia. La diversidad de la comunidad vegetal fue baja. El área total de copa fue de 4 276.03 m2 ha-1, con tres estratos de altura. El carbono almacenado fue de 2.82 Mg ha-1, mientras que la biomasa aérea total fue de 567.15 kg ha-1.
Identificación de Enterococcus aislados de lactosuero de quesos artesanales de Puebla
Authors: Alvarado-Castillo Ma. Gabriela , Montalvo-Paquini Claudia , Baltazar-Gómez Guadalupe , Ortega-Cadena Omar , Camacho-Martínez Francisco Javier , Borraz-Arguello María del Tránsito
Published: March 2024

La producción de queso artesanal en México iguala o supera a la producción formal, aproximadamente por cada 100 L de leche de bovino se obtienen 10 kg de queso y 90 L de lactosuero, este residuo es considerado como contaminante por su alta carga orgánica que además favorece el desarrollo de Enterococcus. En este trabajo se identificaron Enterococcus en muestras de lactosuero de cuatro localidades en Puebla. Se aislaron bacterias Gram positivas, catalasas negativas, con capacidad para crecer a diferentes temperaturas (10, 40 y 45 °C), valores de pH (9.2 y 9.6), y concentración de NaCl (4 y 6.5%). Se hicieron pruebas de PCR de punto final para confirmar la detección de Enterococcus faecium (19 cepas) y Enterococcus faecalis (seis cepas) en lactosuero de tres localidades, estos resultados sugieren que es necesario una mejor vigilancia sanitaria del lactosuero, para evitar la proliferación de microorganismos potencialmente patógenos.
Índice de sitio en plantaciones forestales de Pinus oocarpa Shiede en Michoacán, México
Authors: García-Cuevas Xavier , Rodríguez-Medina Raúl Enrique , Jonathan Jonathan , Ruiz-Duque Hiara , Hernández-Ramos Adrian , Sáenz-Reyes José Trinidad
Published: March 2024

La altura dominante de los árboles de un sitio es un indicador indirecto de la productividad de los suelos forestales y se le denomina calidad de estación, la cual se mide a través del índice de sitio. El objetivo fue ajustar modelos de altura dominante en función de la edad con enfoque de modelos de efectos mixtos para generar curvas de índice de sitio en plantaciones forestales de Pinus oocarpaShiede en Ario de Rosales, Michoacán, México. Con 1 773 pares de datos altura dominante-edad de plantaciones forestales de entre dos a 20 años y relictos de 56 años, se ajustaron cinco modelos de crecimiento para elegir uno base. El modelo de Weibull se ajustó por modelos de efectos mixtos con la parcela como covariable aditiva en el parámetro relacionado al sitio. La curva guía en altura dominante y las curvas polimórficas cubren adecuadamente la variabilidad muestral de la información y representan de forma confiable la productividad del sitio donde crecen estas plantaciones. El sesgo y la validación de los resultados mostró confiabilidad en las estimaciones. El turno técnico en altura dominante está entre cinco y 15 años de acuerdo con su calidad de estación. Con estos resultados es posible realizar la clasificación de las plantaciones forestales de Pinus oocarpa de manera confiable y acorde con el nivel de productividad de cada sitio de establecimiento.
Aplicación y simulación de una quema prescrita en un bosque de encino-pino en Guerrero, México
Authors: López-López Bernardo , Flores-Garnica Jo´sé Germán , Aguirre-Calderón Oscar Alberto , Silva-Aparicio Marisa
Published: March 2024

Los modelos de combustibles estandarizados son una herramienta útil para predecir el comportamiento del fuego y plantear estrategias de supresión de incendios forestales. El objetivo del presente trabajo fue comparar las simulaciones del comportamiento del fuego con el resultado de una quema prescrita en un bosque de encino-pino en Guerrero, México. Se colectaron muestras de hojarasca (Ho) y mantillo (Ma) en 0.09 m2 al final de las líneas de intersección planar para el muestreo de combustibles leñosos. Las simulaciones en el sistema FUEGO se basaron en: a) cargas de combustible de campo y b) cargas teóricas de los modelos 8 y 9. Durante el desarrollo de la quema se monitoreo la temperatura (T), humedad relativa (HR), velocidad del viento (VV), altura de llama (ALL) y velocidad de propagación del fuego (VP). La carga de combustible 11 t ha-1, propicio una VP = 1.07 m min-1 y ALL = 0.65 m para quemas en contra de la pendiente. Las simulaciones con un cuadrado medio del error (CME) de 0.11, evidenciaron valores aceptables de ALL (0.54 y 0.64 m) a excepción del modelo ALL-M8 con 0.24 m (p < 0.05).  La VP-real no presento diferencias estadísticas con las simulaciones para valores de 0.40 y 1.78 m con un CME = 0.54 y 1.56, los modelos VP-9 y VP-M9 propiciaron valores de simulación altos, respecto a la VP-M8 (p < 0.05).  El comportamiento del fuego respondió a los cambios de HR, VV y distribución espacial de los combustibles en el terreno.
Microorganismos en la biofertilización del cultivo de maíz como complemento a la fertilización química
Authors: Canizalez-Silva Manuel , Blanco-Macías Fidel , España-Luna Martha Patricia , De la Rosa-Rodríguez Rodolfo , Lara-Herrera Alfredo , Lozano-Gutiérrez Julio
Published: March 2024

El aporte de nutrimentos al cultivo de maíz en México es principalmente con fertilizantes químicos, sin embargo, el precio de estos insumos requiere buscar otras alternativas para abatir los costos, sin disminuir la producción. El objetivo de este trabajo fue determinar el efecto individual y combinado de Azospirillum brasilense, Bacillus subtilis y Serendipita indica (ocho tratamientos) en la producción de maíz. El cultivo se estableció en Cieneguillas, Zacatecas, en condiciones de invernadero, en el año 2022. La inoculación de los microorganismos se realizó al momento de la siembra. Los ocho tratamientos con los microorganismos se evaluaron en un diseño experimental en bloques al azar con cuatro repeticiones. Con la co-inoculación de A. brasilense + S. indica se incrementó el rendimiento de toda la planta y el mayor rendimiento de grano con A. brasilense + B. subtilis, este último incremento, respecto al testigo, fue de 40%.
Nuevo registro del género Isonychia (Ephemeroptera: Isonychiidae) en México y datos de parámetros del agua
Authors: Rodríguez-Ríos Edwin Alán , Cardoza-Martínez Gabriel Fernando , Alonzo-Rojo Fernando , Valenzuela-García Ana Alejandra , Álvarez-Zagoya Rebeca , Estrada-Arellano Josué Raymundo
Published: March 2024

El género Isonychia agrupa efímeras con ninfas de gran tamaño presentes en ecosistemas lóticos. Este género tiene una distribución muy amplia, a pesar de ello, en México los registros son muy escasos y éstas no refieren las características ambientales de los sitios donde fueron encontradas. El objetivo de este trabajo es reportar por primera vez el género Isonychia en el estado de Durango, así como caracterizar algunos parámetros fisicoquímicos del agua asociados a su distribución. Se registraron 19 ninfas de Isonychia, que probablemente corresponden a la especie I. sicca, en siete sitios dentro de la cuenca del río Nazas. Esto amplía el rango de distribución del género Isonychia para México. Los ejemplares se registraron en ambientes con velocidad de corriente moderada y una calidad del agua aceptable en comparación con otros sistemas riparios, en términos de oxígeno disuelto, conductividad eléctrica, sólidos disueltos totales, pH, temperatura y amonio.
Defensa enzimática y productividad de tilapia con dietas de ensilado químico y germinado de frijol
Authors: Aguilera-Morales Martha Elena , Hernández-Sánchez Fabiola , Domínguez-Magaña Mario Alberto de Jesús , Antonio-Cisneros Cynthia Magaly , Marina-Clemente José Antonio
Published: March 2024

Después 60 días de experimentación se evaluó el efecto de tres dietas a base de ensilado químico (EQ) y germinado de frijol negro (GF) (DC = dieta control; D1= EQ; D2=GF; D3 = EQ+GF) sobre la defensa enzimática (superóxido dismutasa, SOD, y catalasa, CAT ) del hígado de tilapias y los parámetros de producción (ganancia de peso, tasa de eficiencia proteica, sobrevivencia, factor de conversión alimenticia), previa caracterización química del EQ, GF y las dietas experimentales (análisis químico proximal, aminoácidos, ácidos grasos, sustancias antinutrionales, fenoles totales (CFT), flavonoides totales (FlvT) y capacidad antioxidante (CA). Fue aplicado un diseño de bloques al azar con tres réplicas utilizando 120 juveniles de tilapia var GIFT masculinizados con peso promedio 9.6 ± 0.12 g. El CFT, FlvT y CA fueron analizados mediante Pearson y coeficiente de correlación, la actividad enzimática y parámetros productivos con ANOVA de una vía y a posteriori Tukey (95%). La sobrevivencia fue 100% en todos los tratamientos y hubo diferencias significativas (p<0.05) del efecto entre las dietas, siendo la D3 la mejor en crecimiento y parámetros de producción en los peces, sugiriendo una sinergia entre los componentes del EQ y el GF. Este último fue una fuente de antioxidantes que mejoró las actividades SOD y CAT, prometiendo promoción de la salud. La D3 representa una alternativa alimenticia para el crecimiento y promoción de la salud de la tilapia, previa prueba de desafío y evaluación con factores adversos, y comprobar su eficiencia en las siguientes etapas de crecimiento bajo condiciones reales.
Antimicrobial activity of nanoparticles prepared with O-carboxymethylchitosan:γ-Fe2O3:silver and extract of Piper solmsianum
Authors: Molinett Francieli , Rodrigues Clovis Antonio , Inácio Almerindo Gizelle , Zanoni da Silva Rosi , Dal Magro Jacir , Martello Rafael , Slawska-Waniewska Anna , Nedelko Natalia , Bella Cruz Alexandre
Published: March 2024

Silver nanoparticles incorporated into magnetic nanocomposite were synthesized using a crude methanolic extract from Piper solmsianum, which was used as an agent for reduction and stabilization in phytochemical-assisted synthetic nanomaterial. The antimicrobial activity of the pathogenic microorganisms is reported here. The synthesized nanoparticles were also characterized by transmission electron microscopy and quantification of Ag analysis. The antimicrobial activity was evaluated by the broth microdilution method, against the bacteria Bacillus subtilis, Staphylococcus aureus and Escherichia coli, and the yeast Candida albicans. Among the nine compounds tested, CMAgPs2 and CMAgPs5 presented the best results in terms of activity against bacteria (bactericidal) and yeast (fungistatic). It was observed that crude methanolic extract proved to be a potential reducing agent for green synthesis. It was also found that no CMAgPs sample was toxic in the Artemia salina test.
Optimizing Support Vector Machine Performance for Parkinson's Disease Diagnosis Using GridSearchCV and PCA-Based Feature Extraction
Authors: Jumanto Jumanto , Rofik Rofik , Sugiharti Endang , Alamsyah Alamsyah , Arifudin Riza , Prasetiyo Budi , Muslim Much Aziz
Published: March 2024

Background: Parkinson's disease (PD) is a critical neurodegenerative disorder affecting the central nervous system and often causing impaired movement and cognitive function in patients. In addition, its diagnosis in the early stages requires a complex and time-consuming process because all existing tests such as electroencephalography or blood examinations lack effectiveness and accuracy. Several studies explored PD prediction using sound, with a specific focus on the development of classification models to enhance accuracy. The majority of these neglected crucial aspects including feature extraction and proper parameter tuning, leading to low accuracy.
Objective: This study aims to optimize performance of voice-based PD prediction through feature extraction, with the goal of reducing data dimensions and improving model computational efficiency. Additionally, appropriate parameters will be selected for enhancement of the ability of the model to identify both PD cases and healthy individuals.
Methods: The proposed new model applied an OpenML dataset comprising voice recordings from 31 individuals, namely 23 PD patients and 8 healthy participants. The experimental process included the initial use of the SVM algorithm, followed by implementing PCA for feature extraction to enhance machine learning accuracy. Subsequently, data balancing with SMOTE was conducted, and GridSearchCV was used to identify the best parameter combination based on the predicted model characteristics. 
Result: Evaluation of the proposed model showed an impressive accuracy of 97.44%, sensitivity of 100%, and specificity of 85.71%. This excellent result was achieved with a limited dataset and a 10-fold cross-validation tuning, rendering the model sensitive to the training data.
Conclusion: This study successfully enhanced the prediction model accuracy through the SVM+PCA+GridSearchCV+CV method. However, future investigations should consider an appropriate number of folds for a small dataset, explore alternative cross-validation methods, and expand the dataset to enhance model generalizability.
 
Keywords: GridSearchCV, Parkinson Disaese, SVM, PCA, SMOTE, Voice/Speech
A Practical Approach to Enhance Data Quality Management in Government: Case Study of Indonesian Customs and Excise Office
Authors: Nugraha Tito Febrian , Wibowo Wahyu Setiawan , Genia Venera , Fadhil Ahmad , Ruldeviyani Yova
Published: March 2024

Background: The exponential data growth emphasises the importance of efficient information flow in organisations, especially in the financial sector. Data quality significantly influences decision-making, necessitating reliable Data Quality Management (DQM) frameworks. Previous studies propose DQM to maintain data quality through regulation, technology, measurement, evaluation, and improvement. Researchers highlight high-quality data benefits in private organisations but note the lack of improvement in data utilisation in public organisations. In Indonesia, data accuracy and quality are crucial for financial policies, with frequent reports of data inaccuracies in the Directorate General of Customs and Excise (DJBC), demanding standardised DQM practices. However, However, prior studies have yet to provide comprehensive and practical solutions to improve DQM practices. This study therefore aims to measure the DQM maturity, provide recommendations based on best practices, and formulate a practical strategy for improvements along with indicators tailored to the organisation, a topic that previous research has not explored.
Methods: This study falls under a mixed method approach (a quantitative study followed by a qualitative study) and employs a three-stage methodology. The authors conduct maturity assessment using Loshin model through an assisted enumeration from 5 key stakeholders followed by recommendations based on the Data Management Body of Knowledge (DMBOK) and strategy formulation from internal documents and interview.
Results: The data analysis yielded a DQM maturity score of 3.10, indicating a "defined to managed" level of maturity. Among eight components, only one receives a Managed level, two components are in the Defined level and the rest belongs to a Repeatable level. This study also proposes three strategies to bolster DQM by targeting 49 weak points, which will be progressively and sequentially implemented over a three-year period, using twelve possible solutions.
Conclusion: The study highlights the importance of efficient data flow, particularly in the financial sector, and suggests DQM for maintaining data quality. DJBC's import DQM level is assessed using Loshin's measurements, revealing areas for improvement through key DMBOK activities. Recommendations include data governance, strategic planning, and sequential DQM implementation. The study concludes by formulating a practical approach to be applied in a three-year span with ten indicators to measure success.
 
Keywords: Data Quality Management, Data Quality Maturity Model, Data Quality Strategy, Loshin, DMBOK
Detection of Viral Haemorrhagic Septicemia in Marine Fisheries Commodity Using Real Time–PCR at Fish Quarantine Inspection Agency Denpasar, Bali
Authors: Fitriana Evi , Kenconojati Hapsari , Faizal Ulkhaq Mohammad , Habib Fasya Arif , Nurlita Wahyu
Published: March 2024

Marine fish commodities in Indonesia, both exported and imported, have experienced a significant increase. This increase opens up opportunities for the risk of entry and spread of fish pests and diseases, both on an export scale between countries and between areas within Indonesia. One of the pathogens that is acute that can cause major losses is the virus. The virus that often attacks sea water ornamental fish is Viral haemorrhagic septicemia. The purpose of this study was to detect the presence of VHSV that infects marine ornamental fish commodities using namely: necropsy, fixation, extraction, amplification, and reading of results. This research was conducted at Fish Quarantine Inspection Agency Denpasar, Bali. Based on the test results, VHS was found to attack six samples of marine fish species with codes namely NTC, BC 8.2, BC 9.2, BAR 8.2, 1252, NSR 8.2.
Lean Healthcare Analysis at Airlangga Health Service Center
Authors: Kartika Nurullaily , Widayanti Putri
Published: March 2024

Dental is one of the polyclinics whose biggest problems are waiting times and patient queues. The waiting time and patient queues are a waste in Hospitals. This study aims to identify any waste that occurs in the dental polyclinic at the Airlangga University Health Service Center (PLK) by implementing lean healthcare. Then, provide suggestions for improvements to reduce or eliminate the identified waste. The researcher used a qualitative approach with the results of the big-picture mapping to illustrate the flow of patient care in the dental clinic and determined which activities were value-added (VA) and which were not value-added (NVA). Interviews and questionnaires were distributed in this study to parties who have a role in the service delivery process to patients, namely the dental clinic coordinator, dentist, dental nurse, and service admin. The study's results found 7 value-added activities and 4 non-value-added activities. Then, the researcher used VALSAT to choose the right tools and process activity mapping with the highest score. The results of the waste identification show the weight of waste overproduction at 0.21, waiting at 0.33, transportation at 0.12, inappropriate process at 0.05, unnecessary inventory at 0.12, unnecessary motion at 0.07, and defect at 0.10. Then, a fishbone diagram is used to find the root cause of the waste, and then lean hospital to propose improvements to reduce or eliminate waste in PLK.
Future perspectives for the tobacco industry fight measures using today’s indicators
Authors: ŞANVER Tuğçe Mehlika , ASLAN Dilek
Published: March 2024

Tobacco industry, as one of the “commercial” determinants of health, plays its various tactics to increase the number of tobacco users at the global level. Governments with the support of the tobacco control community should focus on reversing the tobacco endgame. Watching out the industry manipulations with the objective and well-known tools like the Global Tobacco Industry Interference Index (GTIII) and MPOWER might be helpful to be proactively responsive to the threats. In this regard, we aimed to compare selected countries’ tobacco control status using these two basic tools. Twenty-four countries’ data were included in the study. Findings have shown that countries’ assessed values did not show a consistency. A country which fully covers the MPOWER criteria can be open to industry interference based on the GTIII values. Such inconsistency emphasized the need for the development of new indicators in the aim of tobacco endgame.
Analisis pembelajaran keterampilan menyimak teks eksplanasi pada peserta didik kelas v sekolah dasar
Authors: Dewi Indriana , Riyadi Riyadi , Sriyanto Muhammad Ismail
Published: March 2024

This study aims to determine learning activities of listening to explanation text in grade V students of SD Negeri Wonosri and obstacles in learning activities of listening to explanation text in grade V students of SD Negeri Wonosri. This research was conducted using qualitative methods. Data were collected through interviews, observation, and documentation. Research subject was collected using purposive sampling techniques combine with time sampling techniques. The data validity is done through triangulation techniques, namely the triangulation of sources and times. The data analysis used is interactive analysis model. The research showed that learning activities of listening to explanation text in grade V SD Negeri Wonosri applied the lecture method. Students are still less skilled in listening to explanatory texts seen from the attention, sincerity, liveliness, and enthusiasm. The teacher has provided a variety of explanation texts and have mastered of several pedagogic skills.Obstacles in learning activities of listening to explanation text in grade V SD Negeri Wonosri including the teacher-centered learning so that boredom is seen in students. The lack of media or learning variations makes students bored and less enthusiastic. Next, the class condition is not comfortable and the ability to listen to students is still low.
Analisis kesalahan sintaksis bahasa Indonesia dalam karangan narasi siswa kelas V sekolah dasar
Authors: Rahmawati Aulia , Slamet St Y , Surya Anesa
Published: March 2024

Abstract. This study aims to describe syntactic errors in the fields of phrases, clauses, and sentences. Describe the factors that cause syntactic errors in narrative essays for fifth grade students of SD Negeri Tegalayu Surakarta. This study uses a qualitative method. Methods of data collection is done by means of interviews, observation and documentation. The validity of the data using triangulation techniques and sources. Analysis of the data using the interactive model of Miles and Huberman. The results of the research based on indicators in the phrase field contained errors, namely the use of regional languages, inappropriate prepositions, wrong wording, excessive elements, excessive superlative influences and the use of respiricals. The error of the clause is adding a preposition between the verb and the object. Sentence errors are unsubjected sentences, illogical sentences, ambiguous sentences, omission of conjunctions and the use of foreign terms. Internal and exte kurnal causes are lack of understanding of correct sentence structure, low reading interest, use of language in the surrounding environment. The implication of this research is that teachers must improve strategies to overcome syntax errors by explaining good and correct writing procedures according to syntax.

Keywords: language error analysis, syntax, narrative essay

 
Analisis minat belajar siswa kelas IV sekolah dasar terhadap mata pelajaran Bahasa Indonesia
Authors: Rahmawati Aulia , Kurniawan Sandra Bayu , Budiharto Tri
Published: March 2024

Tujuan penelitian ini adalah untuk mengetahui minat belajar dan faktor-faktor yang mempengaruhi minat belajar siswa kelas IV SDN Panularan 06 Surakarta. Jenis penelitian ini adalah penelitian kualitatif. Pendekatan yang digunakan adalah studi kasus. Subjek dalam penelitian ini adalah siswa kelas IV dan guru kelas IV SDN Panularan. Sumber data berasal dari guru dan siswa. Teknik pengumpulan data dalam penelitian ini adalah observasi, wawancara dan dokumentasi. Data penelitian menunjukkan bahwa minat belajar siswa cukup tinggi pada pembelajaran tatap muka terbatas dan faktor-faktor yang mempengaruhi minat belajar sangat berpengaruh pada siswa.
Penggunaan multimedia interaktif untuk meningkatkan keterampilan pemecahan masalah geometri peserta didik kelas v sekolah dasar
Authors: Udin Rohmat Nur
Published: March 2024

The purpose of the research is to remind the problem solving skills of geometry task using interactive multimedia. Interactive multimedia presented as an alternative to boosting learners' understanding  from abstract to concrete. Class action research consists of 2 cycles. The implementation of class action research are 4 stages including: 1) planning; 2) implementation; 3) observation; 4) reflection. The research subject of grade V students at SDN Soropadan in the 2019/2020 school year. Data collection techniques in this research is form of interviews, observations, and tests. The result of pre-act problem solving skills showed 0%. Cycle 1 at meeting 1 68%, at meeting 2 54% classically. The next research in cycle 2 at meetings 1 86%, at meetings 2 100% classically. The actions of each meeting in the cycle increase the percentage of problem solving skills achievment. The implementation of interactive multimedia can improve the problem solving skills about geometry tasks.
Analisis penerimaan guru dan siswa terhadap media pembelajaran IPA materi siklus makhluk hidup berbasis Articulate Storyline di kelas IV sekolah dasar
Authors: Ramadan Monica Putri , Sukarno Sukarno , Yulisetiani Septi
Published: March 2024

Use of Articulate Storyline as a learning medium in the classroom helps students understand the material presented by the teacher due to the attractive appearance of the media. Especially in science subjects which place great emphasis on the implementation of direct experience, namely the material on the cycle of living things is abstract and broad material, so that it cannot be observed directly in its entirety at one time. The purpose of this study was to analyze teacher and student acceptance of the Articulate Storyline-based natural science learning media on the Cycle of Living Things in grade IV SD Negeri Dukuhan Kerten. The research used by the researcher is qualitative research using a case study research design. The data obtained in this study were in the form of student response questionnaire data, teacher interview data and observation data. The results of the analysis of student acceptance of the Articulate Storyline-based learning media on the cognitive, affective and conative aspects received a positive response.  The use of Articulate Storyline-based learning media can fulfill these indicators, so that learning is more meaningful. While the results of the analysis of teacher acceptance of the Articulate Storyline-based learning media received a positive response from the teacher, namely (1) the artmedia is easy to apply, (2) the media display is in accordance with the material, (3) the media can overcome the boundaries of the classroom, (4) the media can add basic concepts that are true, real and appropriate, (5) the media can overcome the experiences of students.
Analisis Faktor-faktor Penghambat dalam Pembelajaran Membaca Permulaan pada Peserta Didik Kelas II Sekolah Dasar
Authors: Dewashanty Laetitia Sabrina , Winarni Retno , Daryanto Joko
Published: March 2024

This study aims to describe the results of the analysis of factors that hinder learning to read beginning and describe solutions for the process of learning to read beginning in class II students. This research uses descriptive qualitative research method. The subject of this research is the second grade teacher of SDIT IslamyCawas. Research data were collected through interview data collection techniques and document studies. The data analysis technique used the Miles and Huberman model. The results showed that the factors that hindered early reading learning were as follows: (1) The teacher did not prepare for learning in the classroom. (2) Student factors, difficulty concentrating during learning due to fatigue, being disturbed by friends, and hyperactivity. (3) Factors in the learning process, use of inappropriate learning methods, less varied learning resources, lack of learning media, and lack of interaction between teachers and students. (4) Factors of facilities and infrastructure, lack of reading resources, absence of libraries, teaching aids and available learning media are not adequate. (5) Environmental factors, a family environment that is not conducive for students and the lack of tutoring by parents due to economic demands. Solutions used by teachers: (1) Mentoring and special assignments for hyperactive students. (2) A special class for learning to read for students who have difficulty reading. (3) Looking for reading sources and learning media from the internet.
Pengaruh model pembelajaran concept sentence dan penguasaan kosakata terhadap keterampilan menulis puisi peserta didik kelas V di sekolah dasar
Authors: Nugroho Amarylis Divanurin , Slamet St. Y , Istiyati Siti
Published: March 2024

The purpose of this research is to: 1) identify differences in poetry writing skills between students taught in the conceptual writing learning model and the round table learning model; (2) knowledge of differences in poetry writing skills between high-lexical and general-lexical students. (3) knowledge of the interaction between learning models and acquisition of vocabulary for poetry skills; The study was quantitatively conducted using an empirical approach, using 2x2 factorial design, a test-form data collection technique. Prerequisite tests for data analysis consist of normality, homogeneity, and equilibrium tests. Data analysis techniques were performed using two-way analysis of variance. The conclusions drawn from this study are: (1) There is a difference in students' ability to write poetry taught through concept sentences and round table learning models (FA = 9,52 > 4.01). (2) There is a difference in poetry writing skills between high-vocabulary and low-vocabulary students (FB = 35,52 > 4.01). (3) There is no interaction between learning models and vocabulary acquisition with respect to students' writing skills (FAB = 0,9 < 4.01).
Analisis butir dan level kognitif pada soal penilaian tengah semester gasal mata pelajaran bahasa indonesia kelas iv sekolah dasar
Authors: Rohma Shafa Nur , Rukayah Rukayah , Supianto Supianto
Published: March 2024

Abstract. This study aims to determine the validity, reliability, difficulty index, discriminator index, distractor efficiency, and distribution of cognitive levels in the odd mid-semester assessment items for the Indonesian language class IV SDN Bratan 1 in the 2022/2023 academic year.  This study uses a quantitative approach to descriptive methods with documentation study data collection techniques.  Based on the study results, it was concluded that the question documents analyzed had a content validity level of 0.8333 – 1. Based on item validity, the results obtained were 35% valid and 65% invalid.  Based on reliability, the question has a reliability of 0.55.  Based on the difficulty index, the results obtained were 65% easy, 35% moderate, and no difficult questions.  Based on the discriminatory index, the results obtained were 5% of bad items, 30% of bad, sufficient, and good items respectively, and 5% of very good items.  Based on the distractor efficiency, there are 15% very bad questions, 20% bad questions, 30% of bad and good questions, and 5% very good questions.  Based on the cognitive level, there are 100% LOTS questions and no HOTS question.
Penerapan model pembelajaran project based learning untuk meningkatkan kreativitas peserta didik pada pembelajaran ipa tema 8 lingkungan sahabat kita kelas 5 sekolah dasar
Authors: Amaliya Dhita , Rintayati Peduk , Chumdari Chumdari
Published: March 2024

The study's goals were to: 1) explain how project-based learning can help students become more creative when studying Science Theme 8: Our Friends' Environment; and 2) use project-based learning to help students become more creative when studying Science Theme 8: Neighborhood of Our Friends. This kind of inquiry is called class action. In order to gather information, researchers used observation, interviews, product originality evaluations, and document reviews. To verify the accuracy of the data, researchers utilized source triangulation and technique triangulation. Techniques for data reduction, data visualization, and inference were employed to evaluate the outcomes. The study's findings indicate that project-based learning in the classroom can help pupils become more creative. Student originality for Cycle I was rated at 74.35, Cycle II at 86.85, and Cycle III at 91.02. demonstrates a rise in student creativity. Cycle I to Cycle III saw an increase of 16.67. Students' creativity falls under the categories of moderate creativity in cycle I, high creativity in cycle II, and high creativity in cycle III.

Kata kunci: Creativity, Project Based Learning, Science.
Hubungan self regulated learning dengan keterampilan berpikir kritis mahasiswa PGSD UNS
Authors: Wahyuningtyas Maria , Atmojo Idam Ragil Widianto , Ardiansyah Roy
Published: March 2024

The purpose of this study was to determine the level of conscientiousness and self-regulated learning of university students in the elementary school teacher education study program at Sebelas Maret University. The sample of this study was students from the class of 2022. The data collection technique used is a test. Data analysis used descriptive statistical analysis. The results of this study the self-regulated learning of the class of 2022 students in the elementary school teacher education study program is mostly in the medium category, which is 35%, and critical thinking is mostly in the low category, which is 35%. Based on the non-parametric with Kendall Tau correlation test there is a relationship between self-regulated learning and critical thinking skills, which is 0,000 < 0,05. The research can be used as a reference to measure the correlation between self-regulated learning and the critical thinking of university students. This research also explains that self-regulated learning in students increases, followed by an increase in critical thinking skills.
Implementasi pembelajaran keterampilan membaca permulaan pada tema 8 di Kelas I sekolah dasar
Authors: Devinda Diah Vira , Winarni Retno , Sriyanto Muhammad Ismail
Published: March 2024

This study aim to describe the implementation of learning early reading skills on theme 8 in grade 1 Elementary School. This study discussed the plan, implementation and evaluation of learning early reading skills. This study used a case study qualitative research method. The research subject was the homeroom teacher from class 1 of SD Negeri 2 Pandansari. Data triangulation was utilized to ensure the accuracy of the research data collected through observation, interviewing, and documenting methods. The Miles and Huberman model, which includes data reduction, data presentation, and conclusion drawing, was employed as the data analysis technique in this investigation. The teacher has carried out planning including mapping basic competence, formulating indicator, learning objective, learning step, but does not plan learning evaluation. Implementation begins with conducting preliminary activities and then core activities. Closing activities are carried out covering all stages such as summarizing activity, reflection, follow-up and evaluation. Evaluation of learning that is carried out, the teacher does not plan and compile evaluation grid, instrument and guideline. Implementation of the evaluation by assessing cognition, attitudes and skill, follow-up, managing score and delivering grade.
Penggunaan media tali andha aksara jawa untuk meningkatkan keterampilan menulis aksara jawa
Authors: Aryawati Rani , Mulyono Hadi , Daryanto Joko
Published: March 2024

This research aims to improve Javanese script writing skills for four grade students of Ta’mirul Islam Surakarta Elementary School in 2018/2019 academic year by using Tali Andha Aksara Jawa media. This Classroom Action Research consisted of two cyles with two learning in each cycle. Subject in this research were students and teacher in IV E grade of Ta’mirul Islam Surakarta Elementary School. Research data collection by way of interviews, observations, test, and document analysis. Source triangulation and technical triangulation used for data validity. The data in this research used descriptive comparative analysis techniques and interactive analysis model by Miles and Huberman. Classical completeness of students in initial condition was 8%, in first cycle showed 56%. then in second cycle showed 92%.

Keywords: Writing skills, Javanese script, Tali Andha Aksara Jawa, elementary school
Analisis kemampuan berpikir kritis menggunakan teori konstruktivisme pada model pembelajaran ipa peserta didik kelas V sekolah dasar
Authors: Ikhtiana Fardha Aini
Published: March 2024

Abstract. This research was carried out with the aim to describe the planning, implementation, and model evaluation on natural science learning of the 5th grade students at SD Negeri Karangasem II in the 2019/2020 academic year. A tecaher and students which amounts to 39 persons becomes the subjects of research. Data collection technique using observation, interview, and documentation. Data analysis technique in this research based on the interactive analysis Miles and Huberman with data collection, data reduction, data presentation, and drawing conclusions. Data validation using triangulation of technique and source. Research result showed that the critical thinking ability students uses theory of constructivism on natural science learning model not yet applied by the teacher so that learners experiencing problems. Students can not make premise and draw a conclusion yet. This research is expected to add scientific insight for the teacher, school, and other reserachers in development and application critical thinking ability.
Penerapan guided writing untuk meningkatkan keterampilan menulis deskripsi pada peserta didik kelas II sekolah dasar
Authors: Kartikasari Aprilia Eka
Published: March 2024

This study aims to improve description writing skills by applying guided writing. This study is Classroom Action Research with two cycles. The subjects in this study were the second grade students of state Primary School of Tegalrejo 98 Surakarta in academic year 2019/2020 with 15 students. Data collection techniques in this study in the form of interviews, observations, tests and documentations. Validity test technique in this study are the source and content triangulation technique, as well as the content validity. Data analysis used is interactive analysis and comparative descriptive analysis. The initial condition of descriptive text writing skills of second grade resulted 13,3%. The first cycle resulting in percentage of 46,7% in classical and the second cycle with the percentage of 86,7% in classical terms. The conclusions in this study is guided writing improved descriptive writing skills on second grade students of state Primary School of Tegalrejo 98 Surakarta 2091/2020 academic year.
Hubungan antara konsep diri dengan kemampuan berpikir tingkat tinggi sebagai transfer of knowledge materi pecahan pada peserta didik kelas V sekolah dasar
Authors: Zain 'Abidah Rahardina , Zain 'Abidah Rahardina
Published: March 2024

The purpose of this research is to find out the relation between the self-concept and ability of high-level thinking as a transfer of knowledge of rational number material. This research was conducted at the student in V grade of Elementary School in 2019/2010 academic year on Ngurah Rai cluster at Laweyan District, Surakarta City. This research used correlation quantitative research methods. The sampling technique used was a random sampling of the student population in the V grade of Elementary School on the Ngurah Rai cluster. The retrieval data of the study used questionnaires and tests. The analysis data technique used simple regression analysis. Referring to the results of the statistical analysis, the correlation coefficient r was 0.761 with a regression model Ŷ = 55.99 + 2.1Xwith a contribution of 57.91%. Indicating to those results, there was a positive relation and significance between self-concept with the ability of high-level thinking as a transfer of knowledge of rational number material. The results of this study are expected to add scientific insights and can be used as relevance for similar research. Elementary V grade students are also expected to be able to develop positive self-concepts so that students high-level thinking abilities can increase.