bluuebunny/crossref_metadata_2025 huggingface dataset:
Propuesta para detección de vibraciones y/o desbalance en un sistema rotodinámico a partir de redes neuronales
Authors:   Universidad Autónoma del Carmen, Ian Arturo SANCHEZ-ARROYO , Marco Antonio RODRIGUEZ-BLANCO ,   Universidad Autónoma del Carmen, José Luis VAZQUEZ-AVILA ,   Universidad Autónoma del Carmen, Iris Susana PALACIOS-GONGORA ,   Universidad Autónoma del Carmen
Published: February 2023

Las maquinas rotativa son muy importancia a nivel industrial para garantizar la flexibilidad, agilidad y precisión de los procesos tanto para aplicaciones críticas y no-criticas para la producción y manufactura de productos, lo cual salvaguardar la integridad humana y económica. En este sentido, garantizar el correcto funcionamiento de los equipos mediante la detección de fallas complementa un buen plan de mantenimiento preventivo o predictivo, esto alargar la vida útil de los equipos y evitar paro de producción. Actualmente existen varias técnicas de detección de vibraciones y/o desbalance para sistemas rotodinámicos como son motores, generadores, cajas de engranes entre otras, las cuales se basan en mediciones mecánicas mediante acelerómetros y/o proxímetros o mediciones eléctricas por medio de sensores de corriente. Las técnicas de procesamientos para diagnóstico de fallas por vibraciones y/o desbalance comúnmente se basan en el modelo del proceso o en señales obtenidas. Sin embargo, los modelos de los sistemas rotodinámicos son comúnmente no lineales, por lo que el modelo del sistema suele ser muy complejo y variante en el tiempo. Entonces las técnicas de procesamiento basados en señales utilizando métodos no lineales es la mejor opción de estudio. Existen técnicas de procesamiento de señales orientadas a sistemas rotodinámicos que permiten detectar fallas en los baleros y por desbalance del rotor, pero necesitan dos tipos de sensores para distinguir la falla especifica y el enfoque está orientado para sistemas lineales lo cual incrementa el costo de la instrumentación y limita el rango de precisión respectivamente. En este trabajo se pretende utilizar la medición de señales vibratorias con solo acelerómetros para distinguir la falla entre baleros y/o desbalance empleando un enfoque no lineal basado en redes neuronales aplicado a un sistema rotodinámico, el cual será entrenado para diversas condiciones de operación libre de falla y bajo falla.
Efecto de la incorporación de Mo y Ag en las propiedades fotocatalíticas de TiO2 para la degradación de contaminantes orgánicos en agua
Authors:   Universidad Autónoma del Carmen, Ilse Larissa ACOSTA-MENDIOLA , Brenda Berenice ZERMEÑO-RESENDIZ ,   Universidad Autónoma del Carmen, Edgar MOCTEZUMA ,   Universidad Autónoma del Carmen, Daniela GONZALEZ-PEREYRA ,   Universidad Autónoma del Carmen
Published: February 2023

Actualmente el suministro de agua de buena calidad es un enorme desafío para la humanidad debido a problemas como, escases de agua y deterioro de su calidad a causa de la presencia de contaminantes. La fotocatálisis heterogénea es uno de los procesos de oxidación avanzada de gran eficiencia para la degradación y mineralización de micro contaminantes orgánicos presentes en agua. Entre los materiales semiconductores empleados como catalizadores en procesos fotocatalíticos destaca el TiO2. El diseño de materiales que tengan la capacidad de mejorar el proceso fotocatalítico, incrementando la absorción de la luz o mejorando la transferencia de las cargas es uno de los temas de gran interés. En este trabajo se explora el efecto del Mo y Ag en las propiedades fotocatalíticas del TiO2 para la remoción de contaminantes orgánicos en agua. La síntesis de los materiales Mo-TiO2 se llevó a cabo empleando el método sol-gel (SG) y el método sol-gel asistido con ultrasonido (SG-U) incorporando el Mo in-situ en proporciones de 5 y 10% en mol de MoO3. Por otro lado, los materiales Ag-TiO2 se sintetizaron por el método de foto-deposición de Ag en TiO2 P25. Los fotocatalizadores se caracterizaron por espectroscopía FTIR, espectroscopía UV-vis de reflectancia difusa y Difracción de rayos X. La evaluación de la actividad fotocatalítica se realizó con naranja de metilo y con 4-clorofenol con concentración inicial de 20 ppm. Como resultado se obtuvo que, los fotocatalizadores Ag-TiO2 presentaron mayor actividad catalítica para la degradación de las moléculas orgánicas, pudiendo deberse a la deposición de Ag sobre la superficie del material que actúa como co-catalizador, mejorando la transferencia de cargas fotogeneradas. Por otro lado, de acuerdo con los resultados de caracterización, el Mo podría actuar como dopante, incrementado la absorción de luz de los materiales, pero generando un efecto adverso en la actividad catalítica.
Efecto de la exposición del colorante textil Rojo versatint en solución acuosa ante un plasma de aire a presión atmosférica
Authors:   Universidad Autónoma del Estado de Morelos, Fidel Benjamín ALARCÓN-HERNÁNDEZ , María del Carmen FUENTES-ALBARRÁN ,   Universidad Autónoma del Estado de Morelos, José Luis GADEA-PACHECO ,   Universidad Autónoma del Estado de Morelos, Esteban MONTIEL-PALACIOS ,   Universidad Autónoma del Estado de Morelos
Published: February 2023

Se determinó el efecto generado en una solución de colorante Rojo Versantint (concentración inicial de 2.4 x 10-3 mg/L) tras ser expuesta a un plasma de aire a presión atmosférica (≈760 Torr). El estudio se realizó para cuatro diferentes tratamientos determinados por los valores de voltaje de generación del plasma (1000, 1500, 2000 y 2500 V), todos para una misma corriente eléctrica de 25 mA durante un intervalo de 150 minutos. Los efectos generados en la solución se monitorearon mediante medidas de espectrofotometría UV / VIS (absorbancia y porcentaje de degradación), pH, cambio de temperatura y bioensayos con semillas de lechuga (Lactuca sativa). El máximo efecto para todos los tratamientos se observó al minuto 150 del tratamiento de 2500 V; alcanzando disminución de 62.0 % en absorbancia, equivalente a 62.2 % de degradación, 63.2 % para pH e incremento de 42.3 % de la temperatura. El porcentaje máximo de germinación de semillas se alcanzó al minuto 60 de los experimentos, llegando a un 90 % para el mismo tratamiento. En general, los experimentos muestran que, a mayor magnitud de los valores generadores del plasma, mayor eficiencia en la decoloración como función del tiempo, máxima disminución de pH, y menor tiempo de tratamiento para alcanzar el porcentaje máximo de germinación.
Estudio de la adsorción de CO2 en fullereno C20 usando la Teoría del Funcional de la Densidad
Authors:   Universidad Autónoma del Carmen, Miguel del Carmen DOMINGUEZ-TRUJILLO , Sergio MARTINEZ-VARGAS ,   Universidad Autónoma del Carmen, Juan Manuel Tadeo SIERRA-GRAJEDA ,   Universidad Autónoma del Carmen, Humberto Julián MANDUJANO-RAMIREZ ,   Universidad Autónoma del Carmen
Published: February 2023

En este trabajo de investigación se presenta el estudio de la interacción intermolecular de estructuras de fullereno prístino (C20) y dopado con aluminio (C19Al) con dióxido de carbono (CO2). Se diseñaron las estructuras del fullereno y se optimizaron con los funcionales B3LYP, PBE y ωB97X-D3 y el conjunto de bases 6-31G(d,p), y se determinaron la energías de adsorción de CO2 en ambas estructuras, C20 y C19Al. Los resultados revelan que la adsorción del CO2 es mayor con el fullereno dopado con aluminio (C19Al) con respecto a la adsorción del fullereno prístino (C20), demostrando el potencial del fullereno C19Al para emplearse como adsorbente selectivo en sensores de CO2. Para mejorar la precisión de las energías de adsorción de los sistemas (C20-CO2 y C19Al-CO2), se calculó la corrección por Error de Superposición del Conjunto Base o BSSE (del inglés Basis Set Superposition Error).
Tendencias investigativas en facturación electrónica a nivel internacional entre 1979 y 2022
Authors: Valencia-Arias Alejandro , Echeverri Gutiérrez Camilo Andrés , Acosta Agudelo Leidy Catalina , Echeverri Gutiérrez Mauricio Stiven , Rodríguez Valencia Carlos Andrés
Published: February 2023

La facturación electrónica se ha convertido en una tendencia, dado los beneficios dentro de los avances en el comercio electrónico. Las tecnologías y los factores que se integran en la adopción e implementación promueven la transformación de los modelos de negocio y el procesamiento de la información de forma eficiente y segura. El objetivo de este artículo es identificar tendencias investigativas en facturación electrónica, en el ámbito internacional, entre 1979 y 2022. La metodología planteó un enfoque exploratorio, a partir de un estudio bibliométrico, usando las bases de datos Scopus y Web of Science, por medio de las cuales se obtuvieron 136 documentos académicos, analizados a través de una serie de indicadores de cantidad, calidad y estructura. Entre los hallazgos, se observó que el blockchain es una de las tecnologías con mayor relevancia para la protección de la información de las transacciones, siendo la seguridad un aspecto muy importante para los procesos de adopción, así como el gobierno electrónico y la computación en la nube. Por último, se concluye la importancia de este estudio, a partir del análisis de tendencias en la adopción de facturación electrónica, para la modernización y actualización de las operaciones organizacionales, y para el futuro investigativo del sector académico.
Aporte de las tecnologías de la información y la comunicación (TIC) para minimizar la deserción de carreras universitarias en tecnología
Authors: Fuertes Arroyo Yolfaris Naidit , UC Ríos Carlos Eduardo
Published: February 2023

Los graduados de carreras de tecnología de la información, como Ingeniería de Sistemas, Tecnología en Desarrollo de Software y afines, actualmente son una de las mayores preocupaciones para la universidad, la empresa y el Estado colombiano, debido a que la escasez de estos profesionales se incrementa cada día en el país. Este estudio tuvo como objetivo presentar una relación de la deserción estudiantil en los programas de Tecnología de la Información -TI- en Colombia, y mostrar que, a través de la buena práctica docente, se puede minimizar la deserción académica. La metodología se desarrolló basada en principios positivistas, a través de estudio correlacional; se aplicó una encuesta como técnica de recolección de información a 81 estudiantes de carreras afines a las tecnologías, usando la prueba de validez y confiabilidad Alfa de Cronbach. Los resultados reafirmaron que las herramientas tecnológicas, utilizadas a través de estrategias de aprendizaje en el aula, son pieza clave en la motivación y fortalecimiento del proceso formativo; lo que aporta significativamente a la minimización de la deserción académica. Se concluye que la inmersión de las herramientas tecnológicas en la educación, incorporando la gamificación y los proyectos integradores, robustecen el proceso de enseñanza y aprendizaje.
Valorar lo simple y lo familiar: los drásticos cambios en las trayectorias vitales de pacientes y trabajadores de la salud por la COVID-19
Authors: Rojas Betancur Hector Mauricio , Hernández Quirama Andrea
Published: February 2023

La pandemia por la COVID-19 constituye un evento de gran trascendencia en la vida de las personas, especialmente aquellas directamente afectadas. Objetivo. Conocer las percepciones respecto a la experiencia que tuvieron por la pandemia. Se llevó a cabo la investigación cualitativa de carácter fenomenológico, se realizaron en total 55 entrevistas en profundidad por muestreo teórico intencional, seleccionando 10 personas por criterios de inclusión: 4 de trabajadoras de salud de primera línea y 6 de pacientes en unidad de cuidados intensivos; se procesó la información para su análisis. Para ambos actores, la experiencia de padecer o atender COVID-19, que fueron hospitalizados, estuvo marcada por la incertidumbre, el miedo y las tensiones profesionales y familiares. Las trabajadoras de salud experimentan la satisfacción del deber cumplido y el reconocimiento y agradecimiento de la gente, aunque en medio de situaciones desconcertantes que, tanto para trabajadoras de salud como para pacientes, producen una revalorización de la existencia, de la convivencia y la interacción con familiares y amigos como cambio significativo por la pandemia.
Análisis bibliométrico de la relación entre la responsabilidad empresarial y el desempeño financiero
Authors: Cardona Valencia Daniel , Salazar Jiménez Erika Janeth , Álvarez Osorio Martha Cecilia
Published: February 2023

El objetivo de esta investigación fue caracterizar las publicaciones científicas tomadas de la base de datos SCOPUS a junio de 2022, en torno a la relación entre la responsabilidad social empresarial y el desempeño financiero, mostrando el creciente interés de la comunidad científica en el desarrollo conjunto de este tema. También, se analizaron los impactos en la contabilidad y las finanzas a través de la interrelación entre un concepto, inicialmente social, que cada vez más se convierte en parte esencial del direccionamiento estratégico de las organizaciones. El enfoque de esta investigación tuvo características cualitativas, tabulando y sintetizando de una forma sistemática las características propias del contexto de la responsabilidad social empresarial (RSE); fue de alcance descriptivo y utilizó un método documental, mediante la técnica de análisis bibliométrico. Los resultados del análisis bibliométrico de 845 trabajos señalaron la relevancia de la temática en la estructura organizacional de países desarrollados y la insipiencia en regiones como Latinoamérica, donde primordialmente se aplica desde un margen de beneficio legal y no desde la generación de valor, pudiendo concluir que a partir del año 2000 se ve más consistencia en la producción de trabajos desarrollados sobre la relación entre la RSE y el desempeño financiero.
DESIGN AND EXPERIMENTS OF A LAYERED FERTILIZER SHOVEL FOR MAIZE
Authors: DU Xin , LIU Cailing , JIANG Meng , YUAN Hao , DAI Lei , LI Fanglin , GAO Zhanpeng
Published: February 2023

A layered fertilizer shovel is designed to achieve double layer fertilization in response to the current problem of large fertilizer efficiency loss in one-time banding application. The key structural parameters of the layered shovel were designed and the working speed V, the distance L1 between the banding fertilizer discharging pipe and the point-applied fertilizer discharging device and the distance L2 between the fertilizer distribution plate and the point-applied fertilizer discharging device were determined as the main factors affecting the layered distance h. A quadratic regression model between factors and indicators was established by single-factor test and response surface analysis. With the layered distance h=10 cm as the optimization target, the predicted value of layered distance h is 10 cm when V, L1 and L2 are 2.7 km/h, 15.3 cm and 18.2 cm, respectively, and the simulation test is conducted to verify the combination of the parameters obtained from the optimization solution, and the simulated value of layered distance h is 9.9 cm, which is a small error compared with the predicted value. The field test was conducted under the optimal combination of parameters, and the results showed that the layered distance h was 9.1 cm at the working speed V of 2.7 km/h, and the relative error was 8.1% compared with the simulation value, which can be considered as a high reliability of the simulation test,
and the simulation test can accurately simulate the distribution of fertilizer particles in the real environment in the field. When the working speed V is 1.8-5.4 km/h, the distribution range of layered distance h is 8.0-9.5 cm, which can meet the agronomic requirements of fertilizer layered application.
Gambaran Deskriptif Usaha Modern Pizza Hut Dengan Usaha Tradisional Panties Pizza
Authors: Khoirunnisa Tasya , Zakiya Rifka Syifa , Andriani Eka
Published: February 2023

Pizza hut merupakan perusahaan waralaba makanan internasional berdiri pada tahun 1958. Pizza hut pertama di Indonesia pada tahun 1984. Saat ini memiliki 200 restoran di Indonesia. Salah satunya berlokasi di Sentra Kuliner Harapan Indah Lot. 2C, Bekasi. Panties pizza pertama berdiri di Indonesia pada tahun 2013 di Kota Solo. Saat ini memiliki 55 outlet yang tersebar di seluruh Indonesia, salah satunya berlokasi di Ruko Kota Harapan Indah, Jl. Boulevard, Bekasi.Tujuan menganalisa untuk mengetahui letak perbedaan antara manajemen usaha modern di pizza hut dengan usaha tradisional di panties pizza. Desain dilakukan dengan cara analisis deskriptif. Analisa dilakukan di Bekasi pada tanggal 16 Desember 2020. Logo pizza hut dan panties pizza memiliki makna yang sama yaitu kebersihan yang dijunjung tinggi dan rasa yang dijamin enak, logo pizza hut dan panties pizza ini sama yaitu merah dan putih. Pizza hut memiliki pesaing dalam industri dagangnya yaitu domino’s pizza, sedangkan panties pizza memiliki pesaing yaitu krasti pizza. Kemasan pada pizza hut menggunakan kardus yang memiliki banyak ukuran sedangkan panties pizza menggunakan kemasan kertas sekali pakai. Penilaian konsumen terhadap pizza hut adalah 3,2 dan untuk panties pizza 3,5. Panties pizza memiliki nilai rating lebih tinggi dibandingkan dengan pizza hut.
PENINGKATAN HASIL BELAJAR LARI CEPAT JARAK PENDEK MELALUI PEMBELAJARAN MEDIA ALAT BANTU PADA SISWA  SMP NEGERI 281 JAKARTA
Authors: Anggara Fawzan , Sari Zihan Novita
Published: February 2023

Penelitian ini bertujuan untuk mengetahui apakah penerapan pembelajaran dengan menggunakan media alat bantu dapat meningkatkan hasil belajar lari cepat jarak pendek. Manfaat penelitian ini adalah untuk memberikan gambaran secara umum para guru tentang penggunaan penerapan metode yang sesuai dalam kegiatan proses belajar mengajar, sehingga dapat meningkatkan kualitas hasil belajar. Jenis Penelitian yang digunakan dalam penelitian ini adalah penelitian tindakan dan dilaksanakan dua siklus, setiap siklus dimulai dengan perencanaan, tindakan, observasi, dan refleksi. Subjek penelitian ini adalah kelas VII J SMP Neegeri 281 Jakarta yang berjumlah 36 orang. Data dikumpulkan dari hasil observasi dan hasil tes belajar. Hasil penelitian ini menunjukkan bahwa terjadi peningkatan hasil belajar siswa, terbukti pada siklus satu yang tuntas belajar mencapai 15 siswa atau 38,24% dengan nilai rata-rata 75,3. Pada siklus dua yang tuntas mencapai 33 siswa atau 92,18% dengan nilai rata-rata 84,40. Selain itu, dengan penerapan media alat bantu dapat meningkatkan keaktifan siswa pada pembelajaran lari cepat jarak pendek. Dapat disimpulkan bahwa dengan menggunakan media alat bantu yang sederhana efektif untuk meningkatkan hasil belajar siswa pada pembelajaran lari cepat jarak pendek pada siswa kelas VII J SMP Negeri 281 Jakarta. Kepada rekan-rekan seprofesi untuk dapat menerapkan hasil penelitian ini secara berkesinambungan dan kepada guru Pendidikan Jasmani dan Kesehatan agar dapat menerapkan pembelajaran dengan menggunakan media alat bantu ini sebagai alternatif dalam proses pembelajaran sebagai upaya meningkatkan hasil belajar siswa di sekolah.
KONTRIBUSI KESEIMBANGAN DAN DAYA LEDAK OTOT TUNGKAI TERHADAP KEMAMPUAN TENDANGAN SABIT ATLET UKM TAPAK SUCI UNIVERSITAS BHAYANGKARA JAKARTA RAYA
Authors: Ichtiyanto Muhammad , Candra Juli , Pasaribu Ahmad Muchlisin Natas
Published: February 2023

Penelitian ini bertujuan untuk mengetahui pengaruh keseimbangan dan daya ledak otot tungkai terhadap kemampuan tendangan sabit pada Atlet UKM Pencak Silat Universitas Tapak Suci Universitas Bhayangkara Jakarta Raya. Pencak Silat semakin berkembang dan menjadi olahraga bela diri yang menjadi prioritas untuk dikembangkan sebagai nilai luhur nenek moyang bangsa Indonesia. Penelitian ini dilatarbelakangi oleh kurangnya teknik tendangan sabit pada Atlet Unit Kegiatan Mahasiswa Tapak Suci Bhayangkara Jakarta Raya. Jenis penelitian ini adalah penelitian korelasional. Sampel dalam penelitian ini adalah atlet UKM Pencak Silat Tapak Suci Ubharajaya yang pernah mengikuti kejuaraan dan berusia 18 - 22 tahun, dengan menggunakan teknik purposive sampling sebanyak 29 atlet putra. Metode yang digunakan adalah survey, dengan teknik pengumpulan data menggunakan tes. Instrumen Tes Keseimbangan, Tes Daya Ledak Otot Anggota Badan dan Tes Kemampuan Tendangan Sabit. Analisis data menggunakan uji korelasi product moment. Berdasarkan hasil penelitian dapat disimpulkan bahwa: (1) Terdapat hubungan yang signifikan antara keseimbangan dengan kemampuan tendangan sabit pada atlet Unit Kegiatan Mahasiswa Pencak Silat Tapak Suci Universitas Bhayangkara Jabodetabek dengan nilai rx1.y = 0,923 > r(0,05)(29)= 0,367 ada persentase yang diperoleh 23%. (2) Terdapat hubungan yang signifikan antara daya ledak dengan kemampuan tendangan sabit pada atlet Unit Kegiatan Mahasiswa Pencak Silat Tapak Suci Universitas Bhayangkara Jakarta Raya dengan nilai rx1.y = 0,980 > r(0,05)(29) = 0,367, ada persentase yang diperoleh 74%. (3) Terdapat hubungan yang signifikan antara Kontribusi Keseimbangan dan Daya Ledak otot tungkai terhadap kemampuan tendangan sabit pada atlet Unit Kegiatan Mahasiswa Pencak Silat Tapak Suci Universitas Bhayangkara Jakarta Raya dengan nilai rx1.y = 0,980 > r(0,05)(29)= 0,367 ada persentase yang diperoleh 97%.
MODEL BELAJAR SERVIS DOUBLE EVENT SEPAK TAKRAW PADA SISWA EKSTRAKURIKULER SMPN 249 JAKARTA BARAT
Authors: Indria Yunita , Gani Abdul , Setiawan Iwan
Published: February 2023

Penelitian ini bertujuan untuk membuat model belajar servis double event sepak takraw. model pembelajaran ini nantinya dapat dijadikan sebagai bahan referensi bagi guru PJOK dan para pelatih ekstrakulikuler dalam memberikan proses belajar ekstrakulikuler di sekolah. Materi yang di ajarkan tidak menyulitkan dan memberatkan anak, karena anak usia Sekolah Menengah Pertama masih berada pada tahapan anak untuk belajar, Untuk menciptakaninovasi dalam proses suatu model pembelajaran. Metode yang digunakan dan penelitian ini adalah metode penelitian dan pengembangan (research and development). Adapun fungsi dari penelitian ini ialah untuk menciptakan suatu metode model belajar servis double event sepak takraw yang dapat digunakan oleh pelatih untuk mempermudah dalam proses belajar sepak takraw di sekolah. Uji coba yang dilakukan dengan memberikan 13 model belajar yang telah dibuat peneliti untuk dianalisa dengan pengisian angket expert judgment. Didapatkanlah 13 model pembelajaran yang dianggap layak dan kemudian dilakukan uji kemenarikan dan kemudahan serta layak digunakan untuk proses belajar sepak takraw.
E-PORTFOLIO BASED LEARNING
Authors: Aliyudin Dedin , Kusrin Kusrin , Ahmad Yousef Bani
Published: February 2023

The present study aimed to investigate the response of e-portfolio on EFL students’ speaking classroom. This study conducted to examines whether e-portfolio has good effect on improving student speaking skill. This study conducted at one of the junior high school in Bandung in the academic year 2019/2020. Seven students participated in this study. The type of this study was qualitative research and its design was a case study. The data obtained through observation, interview, and documentation. The findings of the research showed that e-portfolio has a positive response from the students. It was proven by the result of the data that the students helped by using e-portfolio as a speaking learning media. In addition, the result of this study indicates that e-portfolio is an interesting learning media to help students on their listening skills.
PEMBELAJARAN DALAM MASA PANDEMI COVID-19
Authors: Saputra Rendy Rinaldy
Published: February 2023

Latar belakang dilakukannya penelitian adalah untuk mendalami permasalahan permasalahan yang dihadapi dalam pelaksanaan kegiatan pembelajaran selama pandemi Covid-19 dengan tujuan untuk mengetahui 1) bagaimana implementasi pembelajaran pada masa pandemi Covid-19, dan 2) apa saja hambatan dalam pelaksanaan pembelajaran pada masa pandemi Covid-19. Penelitian dilakukan dengan pendekatan kualitatif dengan melakukan kajian terhadap penelitian terdahulu. Data yang dianalisis dalam penelitian diperoleh melalui halaman Google Scholar dengan kata kunci “Covid-19 dan pendidikan”. Penelusuran pada halaman google scholar merujuk pada 6 jurnal yang memenuhi kriteria penelitian. Berdasarkan hasil analisis data penelitian dapat disimpulkan beberapa hal diantaranya: 1) pembelajaran daring merupakan upaya terbaik yang dapat dilakukan dalam rangka memutus mata rantai penyebaran virus Covid-19 khususnya dibidang pendidikan, 2) Pembelajaran daring dapat dilakukan dengan menggunakan beragam aplikasi berbasis internet seperti WhatsApp Group, Zoom Cloud Meeting, Google Classroom, Google Form, Quipper,  e-mail dan lain sebagainya, 3) kendala yang dihadapi dalam melaksanakan kegiatan pembelajaran daring diantaranya masih minimnya sarana dan prasarana penunjang, layanan internet yang tidak stabil, membutuhkan kuota yang cukup besar, belum meratanya sumberdaya manusaia yang menguasai tekhnologi dengan baik, komunikasi dalam proses pembelajaran tidak berjalan dengan baik, terbatasnya metode pembelajaran yang diterapkan dalam kegiatan belajar, serta minimnya pengawasan terhadap perkembangan peserta didik.
Physical properties of sulfur double donors in 4H-SiC introduced by ion implantation
Authors: Matsuoka Taiga , Kaneko Mitsuaki , Kimoto Tsunenobu
Published: February 2023

The activation ratio and the ionization energy (ΔE) of sulfur (S) atoms implanted in n-type 4H-SiC were investigated. It was revealed that implanted sulfur atoms show almost no diffusion during activation annealing at 1750 °C and the electrical activation ratio determined by capacitance–voltage measurement is nearly 100%. The net donor concentration showed good agreement with twice the S atom density, which means that a S atom works as a double donor. ΔE was estimated to be in the range of 340–520 meV for four donor levels by Hall effect measurement and admittance spectroscopy.
Dexmedetomidine compared to ketofol for sedation in pediatric patients undergoing dental procedures: a double-blind, randomized clinical trial
Authors: Hussien Rania Maher , Emam Dalia Fahmy , Shoukry Aktham Adel
Published: February 2023

Background & objective: Hospital phobia and anxiety are still prevalent issues in the pediatric patients. Various sedative regimes have been in dental practice, but the evidence for safe and effective sedative drugs in this population is scarce. We compared the safety and efficacy of intravenous combination of ketamine plus propofol (ketofol) with dexmedetomidine (Dex) as a sedative premedication in anxious children undergoing dental pulp therapy.

Methodology: This double-blind, randomized clinical study recruited 40 anxious children who were to undergo dental pulp therapy. The study participants were allocated into two groups (20 subjects each). Subjects in Group I received ketofol solution (ketamine/propofol mixture, each mL contains 2 mg of ketamine plus 4 mg of propofol). A loading dose of 0.3125 mL/kg was administered intravenously (IV) over 10 min, followed by maintenance infusion at a rate of 0.05-0.125 mL/kg/h. Subjects in Group II received the Dex solution (4 µg/mL). A loading dose of 2 µg/kg was administered IV over 10 min, followed by a maintenance infusion of 0.1-1 µg/kg/h. Non-invasive blood pressure, SpO2, heart rate (HR), and respiratory rate (RR) were assessed at baseline, at 2 min, and then at 5 min intervals till 60 min. Ramsay sedation score was assessed before, during, and after the procedure and Aldrete's recovery rating score was assessed at the end of the procedure.

Results: Compared to the Dex group, the ketofol group showed a statistically significant shorter sedation onset (P = 0.017) but longer discharge time as well as higher rescue dose and a number of interruptions (P < 0.001). There was more stable respiration in Dex group, but with significantly more bradycardia. The mean arterial blood pressure showed some episodes of significant elevations with ketofol compared to Dex, while a biphasic response was observed in the Dex group.

Conclusion: The use of Dex induced successful sedation of children who underwent tooth pulp therapy in terms of minimizing the number of interruptions during the procedure, the frequency of rescue drugs administration as well as the total procedure and discharge times. Dexmedetomidine showed no adverse respiratory effects but was associated with bradycardia and biphasic mean blood pressure alterations that require careful titration.

Abbreviations: HR: heart rate; IV: Intravenous; RSS: NMDA: N-Methyl D-Aspartate PACU: Post Anesthesia Care Unit; Ramsay sedation score

Citation: Hussien RM, Emam DF, Shoukry AA. Dexmedetomidine compared to ketofol for sedation in pediatric patients undergoing dental procedures: a double-blind, randomized clinical trial. Anaesth. pain intensive care 2022;26(5):595-601; DOI: 10.35975/apic.v26i5.2016
Development and validation of ‘Cognitive Assessment Scale for Stroke Survivors’
Authors: Qamar Shahyan , Iqbal Muhammad Nasar , Rafiq Muhammad , Cheema Ismat Ullah , Masood Komal
Published: February 2023

Background & Objectives: Stroke is a leading cause of death and it causes significant long-term disabilities. It affects cognition and physical impairment in the patients. Cognitive impairments caused by stroke include loss of memory, disorientation, impaired attention, reasoning, and social perception. It may also lead to interaction deficit and inability to problem-solving, etc. The precise knowledge about the degree of cognitive impairment is essential to address the issue with appropriate measures. We aimed to develop a cognitive measurement scale for stroke patients.

Methodology: The phenomenon was explored through in-depth interviews of 12 stroke survivors in different hospitals in Lahore, Pakistan. Seventeen items were generated. After factor analysis, 15 items were included in the scale and a pilot study was conducted on 15 participants. A sample of 106 patients was selected to administer the scale Cognitive Assessment Scale for Stroke Survivors (CASS) and Mini-Mental State Examination (MMSE) scale for concurrent validity.

Results: The Principal Component Factor Analysis through Varimax rotation yielded three factors, e.g., ‘Social Cognition’, ‘Focus and Attention’, and ‘Orientation’. The results have shown significant values with good psychometric properties. The Cronbach’s Alpha value of the developed scale is 0.88 which indicates it as a highly reliable scale.

Conclusion: This research reported that stroke survivors experience cognitive impairment after the stroke incidents. The developed scale to measure cognitive impairment after a stroke incident was proved to be valid and reliable, and can be used in medical practice.

Abbreviations: CASS – Cognitive Assessment Scale for Stroke Survivors; MMSE – Mini-Mental State Examination.

Citation: Qamar S, Iqbal MN, Rafiq M, Ismat Ullah Cheema IU, Masood K. Development and validation of ‘Cognitive Assessment Scale for Stroke Survivors’. Anaesth. pain intensive care 2022;26(4):663-668.

DOI: 10.35975/apic.v26i4.2025
A comparative study between the use of dexmedetomidine vs. dexamethasone as adjuvants to bupivacaine in ultrasound-guided transversus abdominis plane block for postoperative pain relief in patients undergoing lower abdominal surgeries
Authors: Mohammed Abdelhady Ibrahim Salah , Ahmed Ghallab Mahmoud Abdelaziz , Mahmoud Zaki Mohamed Sidky , Sedky Abdelrahman Karim Ahmed , Hefni Soliman Amira Fathy
Published: February 2023

Background & objective: Transversus abdominis plane (TAP) block using local anesthetics is associated with relatively shorter duration of action, and thus additional analgesic drugs are required in the postoperative period. We compared the efficacy and duration of postoperative analgesia achieved with using dexmedetomidine or dexamethasone as adjuvants to bupivacaine in TAP block for lower abdominal surgeries.

Methodology: We enrolled 45 adult patients aged from 20-60 y, and randomly divided them into three equal groups. Group A received ultrasound guided TAP block with 0.25% bupivacaine 20 ml plus 4 mg dexamethasone on each side. Group B received 0.25% bupivacaine 20 ml plus dexmedetomidine 0.5 µg/kg on each side, and Group C (control group) patients received only 0.25% bupivacaine 20 ml on each side. Postoperative pain was assessed with VAS on arrival in post-anesthesia care unit (PACU), at 2 h, 6 h, 12 h, 18 h, and at 24 h postoperatively. Duration of analgesia was the time from drug injection to the time of first rescue of analgesia was recorded.

Results: Mean duration to first dose of rescue analgesia among patients of dexmedetomidine group (Group B) was significantly prolonged as compared to dexamethasone group and bupivacaine only group. Regarding postoperative pain scores there were no statistically significant difference between the three groups; except at 6 h between the A and B groups and the control group. Both dexamethasone group and dexmedetomidine group showed better pain control than bupivacaine only at 6 h interval.

Conclusion: Dexmedetomidine added to bupivacaine in ultrasound-guided transversus abdominis plane block for postoperative pain relief in patients undergoing lower abdominal surgeries prolongs the time to initial postoperative pain presented by time to first rescue analgesic demand than dexamethasone added to bupivacaine; the shortest time to first rescue analgesic was observed in bupivacaine alone group.

Abbreviations: TAP: Transversus abdominis plane block; LA: Local anesthetic; PACU: Post anesthesia care unit; VAS: Visual Analogue Scale; ASA: American Society of Anesthesiologists; SD: Standard deviation; IQR: Inter quartile range.

Citation: Sobhy YS, Gadalla RR, Nofal WH, Saleh MAE, Abdou KM. A comparative study between the use of dexmedetomidine .vs dexamethasone as adjuvants to bupivacaine in ultrasound-guided transversus abdominis plane block for postoperative pain relief in patients undergoing lower abdominal surgeries. Anaesth. pain intensive care 2022;26(5):681–688; DOI: 10.35975/apic.v26i5.2031
Confronting the devastating ‘Twindemic’: Drug overdose deaths and the COVID-19
Authors: Purvez Akhtar
Published: February 2023

Summary: The last 25 years have seen a dramatic increase in drug overdose related deaths in both the industrialized and developing countries. Hundreds of thousands of people die every year. This human tragedy has recently been complicated by the COVID-19 epidemic, sidelining the minimal effort that was being implemented. As a global community, the governments, medical institutions, NGOs and the general public need to focus on this devastating human tragedy before more lives are lost senselessly, and unnecessarily.Increased public awareness about new approaches to manage the already afflicted ones including targeted, minimally invasive procedures is required. In addition, the focus needs to be on aggressive research and development of innovative and safer medications and newer modalities for those suffering from chronic pain.This paper offers a perspective, context and a vision for future.

Key words: Opioid epidemic; Drug overdose; Drug-related deaths; Chronic pain; COVID-19; Safer pain medications

Citation: Purvez A. Confronting the devastating ‘twindemic’; drug overdose deaths and the COVID-19. Anaesth. pain intensive care 2022;26(6):734−735;

DOI: 10.35975/apic.v26i6.2064Received: October 26, 2022; Revised: October 29, 2022; Accepted: October 29, 2022
POCUS: the anesthetist’s emerging stethoscope
Authors: Ayub Leena , Dar Shahid Rasool , Chaudhary Waqas Ashraf
Published: February 2023

Summary: The development of clinical ultrasound was perhaps the greatest revolution in the medical profession during the last half century. The rapid evolution allowed novel uses od US in almost every field of medical practice. Its best use, probably has been in the hands of the anesthetists, who employ it the operating room, in the pain clinic as well as in the emergency room and in the intensive care units. Apicare Journal has strived to introduce this novel modality in this part of the world by editorials and research papers. This invited editorial has been written by one of the best US and POCUS teams in Pakistan, at Ghurki Trust Teaching Hospital, Lahore, Pakistan. It offers a brief introduction to some of the countless options in which it can be used. The authors stress on the availability of US facility and the training to all clinicians. Key words: POCUS (Point of Care Ultrasound); FAST Scan; eFAST Scan; Pain; Pain Management; Anesthetist; Stethoscope; Gastroparesis; Airway Citation: Ayub L, Dar SR, Chaudhary WA. POCUS: the anesthetist’s emerging stethoscope. Anaesth. pain intensive care 2022;26(6):736−738; DOI: 10.35975/apic.v26i6.2065Received: October 26, 2022; Revised: October 29, 2022; Accepted: October 29, 2022
Effect of caudal epidural adhesiolysis plus steroid injections on pain and daily activities among chronic lumbar disc herniation patients; an observational study
Authors: Budisulistyo Trianggoro
Published: February 2023

Background & Objective: The management of lumbar disc herniation (LDH) remains a big challenge as it may involve the surrounding tissues, and attract neovascularization facilitated macrophage aggregates. Epidural triamcinolone might have a half-life action ranging from 10 to 31 days, whereas 80 mg methylprednisolone might improve the pain up to 1 week. The higher doses of steroids will lead to adrenal cortex suppression and osteopenia. We evaluated the effect of treatment with 1500 international unit (IU) hyaluronidase followed by 20 mg triamcinolone at 2 weeks, and 3 and 6 months follow-up.

Methodology: We enrolled seven males (38.9%) and 11 females (61.1%) with mean age 44 ± 23 y in the study. Eight (44.44%) subjects were younger than 51 y old, whereas the 10 (55.56%) subjects were ≥ 51 y old. Twelve (66.7%) subjects had had a bulged disc, and 6 (33.3%) subjects had disc protrusion. We injected 1500 international unit (IU) hyaluronidase followed by 20 mg triamcinolone at the site of disc lesion. Pain scores were measured with NRS scale and Oswestry Disability Index (ODI) scores at 2 weeks, and 3- and 6-months follow-up.

Results: The NRS score improved at 2 weeks, 40% to 71.43%, at 3 months 60% to 100%, and 6 months 80% to 100%. And the Oswestry Disability Index (ODI) score was improved at 2 weeks from 23.5% to 68.18%), at 3 months from 39.13% to 100%, and at 6 months 82.35% to 100%. A significant association was observed between age older than 50 y old and ODI scores at 2 weeks followed up.

Conclusions: The intra-epidural 1500 IU hyaluronidase before triamcinolone brings better results even though using a lower dose of triamcinolone. This approach showed the lower-cost better pain scores as compared to the routine use of heavy doses of triamcinolone for managing bulged and protruding LDH.
Drug extravasation: can ultrasound-guided puncture and aspiration help?
Authors: Karim Habib Md Reazaul , Vankdavath Lavanya , Arora Prateek
Published: February 2023

Summary: The authors have drawn the attention towards perhaps a common complication during intravascular techniques, and a novel use of ultrasound to aspirate the extravasated fluids / drugs to minimize the damaging effects.

Abbreviations: GA: general anesthesia; MAC-age: Age-adjusted minimum alveolar concentration

Key words: Patient Safety; Perioperative; Point-of-Care Ultrasound; Anesthetics

Citation:  Vankdavath L, Karim HMR, Arora P. Drug extravasation: can ultrasound-guided puncture and aspiration help? Anaesth. pain intensive care 2022;26(6):831−832; DOI: 10.35975/apic.v26i6.2073
Manajemen Kegiatan Ekstrakulikuler dalam Seleksi Santri Berbasis Multiple Intelegence
Authors: Agus R Abu Hasan , Rozi Fathor , Faisal Faisal
Published: February 2023

The research aims to help the basic problems of students in determining their choice of majors in Extracurriculars by using Multiple Intelligence-based selection. The research was conducted at the Nurul Jadid Islamic Boarding School in the Jalaluddin Ar-rumi area using a qualitative approach with field research. Data obtained from interviews and observations. Data analysis was preceded by interviews with the Head of Santri Resources & Management, chairman of the Association for Organization Rumi (AFORMI), and the students. The results of the study show that the selection of students based on Multiple Intelligence (MI) is very helpful in determining the extracurricular class of the dormitory, it is even very helpful in procuring activities so that the administrators are able to carry out procurement according to the needs of the talents & interests of the students. The stages of the selection implementation consist of conducting questionnaire tests, giving briefings, and delivering material on Multiple Intelligence. The use of Multiple Choice questions was maintained because the administrators considered that the use of these questions was still effective for students. The Multiple Intelligence-based student selection model is very important to develop because Multiple Intelligence emphasizes the individual intelligence of students, which is considered suitable for the current approach to students.
Program Klinik Jurnal ; Upaya Menstimulasi Minat Tulis Mahasiswa di Perguruan Tinggi
Authors: Rozi Fathor , Hayati Nur
Published: February 2023

This study aims to provide understanding and train students in stimulating students' writing interest in higher education. This research was conducted at Nurul Jadid Paiton University Probolinggo with a qualitative approach with the type of research in the field (field researcb). Data obtained from the observation process, interviews with speakers and students. In the process of data analysis, researchers carry out data collection, data reduction, data presentation, and conclusion of data findings. The results of the study showed the success of the journal clinic program in Nurul Jadid University students. The process of this activity is through training Providing continuous coaching, Understanding the structure of articles, Conducting regular practice and Providing motivation in the spirit of work. This clinic program successfully overcomes students' difficulties in stimulating writing interest. This training is able to provide a stimulus to stimulate students to love writing by holding a journal clinic program. This training has been able to improve the knowledge, skills, and motivation of students to write scientific articles.
Metode Komunikasi Panti Asuhan Darul Aitam Medan dalam Membina Akhlak Anak Asuh
Authors: Candra Wahyu , Rubino Rubino
Published: February 2023

The Darul Aitam Orphanage provides social services and care for neglected children. Researchers say that abandoned children's behavior is basically very well controlled. As a result, the goal of this study was to learn how Darul Aitam Medan orphanage staff members communicate with one another to instill moral values in their children. Case study research and qualitative methods are used in this field study. The data for the research were gathered through observations and interviews. Using hiwar strategies, tabligh strategies, tadzkir techniques, tabsyir strategies, indzar techniques, and appeal techniques, this study reveals how parental figures at the Darul Aitam Medan shelter use specific strategies in building ethics. Youngsters who generally supplicate multiple times in gathering, regard and welcome guardians, guardians and visitors, and assist with cleaning the shelter with other encourage kids show that this method of correspondence decidedly affects them. It is anticipated that the Orphanage will become one of the educational development institutions that helps students, particularly orphans or children who cannot afford it, develop their personalities.
Penerapan Model Pembelajaran Problem Based Learning untuk Meningkatkan Hasil Belajar Pendidikan Agama Islam di SMPN 1 Kadipaten
Authors: Nasir Tatang Muh , Irawan Irawan , Karimah Rika Siti , Robaeah Wilam Nafilah
Published: February 2023

By applying the Problem Based Learning Learning Model in class IX B of SMPN 1 Kadipaten Tasikmalaya Regency for Islamic Religious Education subjects, this research seeks to improve student achievement results. Descriptive research techniques are used in this type of research. All students of class IX B were used as research subjects. The learning process is carried out in three cycles, each of which has four stages, namely planning, implementing, observing, and reflecting. The Problem Based Learning (PBL) paradigm and student achievement are factors in this research. In this study, observation, questionnaires, and tests were used to collect data. Observation sheets, questionnaires, and tests as research instruments. Based on research findings from cycle I, cycle II, and cycle III, the problem-based learning activity plan planned by the teacher for class IX B of SMPN 1 Kadipaten Tasikmalaya went well. Based on the research findings, it can be said that for the 2022–2023 school year, the Problem Based Learning approach can improve student achievement in Islamic Religious Education subject class IX B of SMPN 1 Kadipaten Tasikmalaya
Development of Teaching Materials for Serialized Images of Listening to Stories Using Powerpoints to Improve Arabic Language Skills in Junior High School Students of Baitul Arqam Sumedang Islamic Boarding School
Authors: Supala Supala , Mariana Mariana , Rifai Ahmad
Published: February 2023

Currently, learning media in various schools has become a very important element in the teaching process, because it can contain messages that will be conveyed to students / students during learning using illustrated teaching materials, one of which is at Baitul Arqam Junior High School which will try to apply learning by using PowerPoint-based serial image media in improving students' storytelling skills. This research uses a descriptive method of qualitative research type analysis. The descriptive method is a method in a study to solve, obtain information about a situation, assess, and determine the symptoms found, see or analyze the relationship between existing variables. The results of ni research showed that learning Arabic storytelling method by obtaining a sekor bbased on the Hasil table by students of Baitul Arqam Sumedang Junior High School obtained a score of 80% representation, which is very good.  So, it can be concluded that the use of PowerPoint-based serialized image media is effectively applied to improve students' ability to tell Arabic stories.
PAI Teacher Leadership Paradigm in Achieving Learning Optimization at SMPIT Titian Ilmu Bekasi
Authors: Sandy Sandy , Nurhamzah Nurhamzah , Ismilah Siti
Published: February 2023

Nowadays, students are required to be able to apply Islamic Religious Education (PAI) lessons in their daily lives, so pai teacher leadership is needed to achieve this goal. The purpose of this study is to find out the paradigm of PAI teacher leadership, to find out the problems of PAI teachers, and to find out the leadership of PAI teachers in achieving learning optimization at SMPIT Titian Ilmu Bekasi. This research uses a qualitative approach with the content analysis method (content study). Data collection techniques with literature review and observation. The results of this study are (1) the leadership of a PAI teacher can be measured by benchmarking the extent to which he can implement leadership indicators. (2) Some of the problems of PAI teachers include insufficient student interest, less conducive subject hours, lack of mastery of the material, and uninteresting learning methods or media. (3) The leadership of pai teachers at SMPIT Titian Ilmu Bekasi is in accordance with effective leaders, in accordance with the leadership component and in accordance with leadership in the Islamic view, although not perfectly but already represents the overall nature of teacher leadership in the Islamic view