bluuebunny/crossref_metadata_2025 huggingface dataset:
THE PLOT: MILAGRO Y ESPEJISMO
Authors: Stutzin Donoso Nicolás , Correa Vergara Javier , Celedón Forster Alejandra
Published: February 2024

Santiago y Chicago son dos ciudades distantes, pero conectadas por sus políticas de vivienda y mercado de suelo. Estas relaciones estuvieron al centro de la exhibición The Plot: Miracle and Mirage curada por Alejandra Celedón, Nicolás Stutzin y Javier Correa para la edición 2019 de la Bienal de Arquitectura de Chicago “...and other such stories...”. La operación curatorial fue doble: la primera maniobra fue dirigir la mirada al pasado a través de un trabajo de archivo centrado en declaraciones sobre la ciudad realizadas por los Chicago Boys y sus seguidores. La segunda fue examinar y registrar audiovisualmente la ciudad actual buscando los síntomas de un modelo urbano implícito, escasamente pronunciado. Si bien la ciudad del filme es Santiago actual, las imágenes son efectos de políticas pasadas. La ciudad y su evidencia —presentes y pasadas— se volvieron huellas de un manifiesto retroactivo sobre Santiago.
LA TRAMA ABSTRACTA: PAULINA BRUGNOLI Y EL TAPIZ DEL MUSEO DE ARTE CONTEMPORÁNEO
Authors: De la Maza Josefina
Published: February 2024

A principios de 1969, un tapiz tejido por Paulina Brugnoli fue adquirido por el Museo de Arte Contemporáneo de la Universidad de Chile. La pieza forma parte de la colección de artes aplicadas, un conjunto de objetos que además de textiles incluye metales esmaltados y cerámicas. Los objetos que forman parte de esta colección no han sido examinados en profundidad —así como tampoco la colección ha sido estudiada como conjunto—. El objetivo de este texto es dar cuenta de algunos aspectos asociados a la categoría de artes aplicadas, con el fin de promover una reflexión sobre las dificultades de investigar estos objetos desde la perspectiva de la historia del arte. De modo particular, este artículo revisará, como estudio de caso, los aspectos formales y técnicos del tapiz de Brugnoli, tejido poco después de que su autora egresara de la Escuela de Artes Aplicadas de la Universidad de Chile, y su historia de exhibición.
TRAMAS Y MURMULLOS EN LAS HISTORIAS DE LAS EXPOSICIONES DE ARTE LATINOAMERICANO
Authors: Varas Paulina , Godoy Francisco
Published: February 2024

El presente texto propone una revisión de algunos hitos expositivos de arte latinoamericano, y a la vez la construcción de categorías identitarias de algunas prácticas artísticas de los años sesenta y setenta. Sobre la base de una revisión de las historias de exposiciones como “Global Conceptualism” (Nueva York, 1999) o “Heterotopías...” (Madrid, 2001), y de centros de arte como el CAYC (Centro de Arte y Comunicación de Buenos Aires), se reastrean denominaciones que ayudan a mapear una trama de relaciones que operan como marcas legitimadoras de una cuota de diferencia de los países de las experiferias. El texto propone la importancia de revisar todos aquellos detalles que conformaron, por ejemplo, la noción de conceptualismo ideológico, los cuales fueron desmarcados de su lógica inicial, fechada en un momento específico y siguieron operando en lógicas expositivas después de más de veinte años. Finalmente, se propone prestar atención a las tramas y los murmullos que han configurado una sólida plataforma de legitimación de algunos discursos de poder en la historia de las exposiciones de arte latinoamericano.
HACER(NOS)FUEGO: UNA PROPUESTA CURATORIAL EN CURSO
Authors: Croxatto Díaz Bernardita Maria , Blesa Cábez Elena , Chacón Bernal Carolina , Ibañez Figueroa Isabel , Villegas G. Luisa , Mongan Guillermina , Muñoz Maria jose , Tasara Sanchéz Sofía
Published: February 2024

Este texto se detiene en distintas prácticas artísticas/curatoriales que, desde finales de los años ochenta, han propuesto posibles respuestas al anquilosamiento de las instituciones y su imposibilidad de dialogar —desde el sistema del arte— con procesos sociopolíticos coyunturales en territorios de Abya Yala. A partir de las nociones de virtualidad de G. Pollock, encuentro y fabulación de D. Haraway, y lo ch’ixi de S. Rivera Cusicanqui, nos aproximamos a estas prácticas situadas. En ellas destacamos distintas operaciones poéticas/políticas que funcionan como antecedentes para proponer una práctica artística/curatorial en el presente, que hemos llamado Hacer(nos) fuego. Esta busca tensionar, entre otras, las siguientes preguntas: ¿Qué tipo de operaciones artístico/curatoriales podemos pensar hoy, en el contexto de los estallidos sociales y pandémicos? ¿En qué espacio-tiempo y con qué metodologías pueden ocurrir acontecimientos artísticos que den lugar a otras epistemologías?
UNA CURADURÍA RESILIENTE: PATRIMONIO ANCESTRAL Y ARTE CONTEMPORÁNEO
Authors: De Nordenflycht José
Published: February 2024

La exposición “Qhapac Ñan: Il grande camino delle Ande” propone un partido curatorial que articula la relación entre el patrimonio cultural ancestral y el arte contemporáneo de seis países andinos sudamericanos. Todo esto en una operación en que los artistas habitualmente no convergen con la visibilidad comparada de sus trabajos insertos en el diagrama de una muestra que incluye material arqueológico, etnográfico e histórico. Convocados por una organización intergubernamental y albergados por una institución museal italiana, en el más improbable de los escenarios para levantar un cruce de semejante resiliencia conceptual, es que proponemos analizar las asimetrías de esta propuesta más allá de lo exótico y sus imposturas decoloniales, donde aparece el uso de vocablos de origen quechua que multiplican el sentido alegórico y la densidad conceptual de las formas propuestas por seis artistas, que comparecen con obras que desde sus diversos lenguajes interpelan el pasado y proyectan el futuro, en una demostración de cómo las prácticas artísticas activan el patrimonio y a la vez se reconocen en él.
EL SONIDO EMITIDO POR EL ESPACIO FÍSICO Y EL ESPACIO INVISIBLE CONSTRUIDO POR EL SONIDO
Authors: Balbontín Sofía , Klenner Mathias
Published: February 2024

La investigación presenta un primer intento de definir el concepto de espacio-sonoro a partir de la experiencia estética y auditiva del sonido en el espacio, observando las interacciones entre sonido y arquitectura reveladas por la percepción sonora. La importancia del sonido en la configuración del espacio considera la arquitectura, no desde su dimensión constructiva, sino como un ambiente sensible, donde el sonido construye entornos vivos y animados. Los casos de estudio para la experimentación son espacios industriales y arquitecturas sublimes de tiempos de guerra, infraestructuras abandonadas en los márgenes de la memoria y lo urbano, lugares inhabitables con una acústica única y exacerbada. A partir de una serie de composiciones elaboradas con registros de campo al interior de los casos de estudio, se trabajó con la interpretación subjetiva de una muestra de personas utilizando la escucha reactiva como principal metodología. La experiencia estética de escucha traduce la información acústica a través de comparaciones y asociaciones que utilizan los sentidos, la sinestesia, la memoria, las construcciones personales y sociales de la realidad y la relación afectiva que tenemos con el entorno, para dar forma y definición al espacio-sonoro.
INSTANTE, ACONTECIMIENTO Y LUGAR. ANÁLISIS PERSPECTIVO DE LA OBRA “BLUE TERRACE LOS ANGELES MARCH 8TH 1982” DE DAVID HOCKNEY
Authors: Leon Luque José Ignacio
Published: February 2024

El estudio que emprendemos a partir de la obra “Blue Terrace Los Angeles March 8th 1982” de David Hockney, está motivado por la fascinación que nos provoca la combinación de instantáneas Polaroid o fotografías Réflex que el artista desarrolló en este tipo de obras denominadas Joiners, consistentes en múltiples imágenes fotográficas compuestas en torno a un motivo, operatoria mediante la cual se intenta crear y comunicar sobre la percepción del espacio y el tiempo (De ARCH, 2016). La introducción de descalces en las distancias, diferencias de puntos de vista y encuadres entre tomas para un motivo determinado, presenta el despliegue temporal en la imagen recompuesta, cuestionando la instantaneidad de la fotografía. Esta obra específica ofrece la oportunidad de estudiar la restitución perspectiva de las imágenes fotográficas que la componen, toda vez que el análisis se aborda como proyecciones en el plano de cuadro para develar la performance de Hockney frente a este motivo.
INVESTIGACIÓN INCLUSIVA Y CODISEÑO: COCREACIÓN DE UN SISTEMA DE APOYO TECNOLÓGICO PARA LA DISCAPACIDAD INTELECTUAL
Authors: Exss Cid Katherine Elena , Spencer González Herbert , Vega Córdova Vanessa , Jarpa Azagra Marcela , Álvarez-Aguado Izaskun , Pastén Bernales Antonella , Von Unger Martínez María Ignacia
Published: February 2024

El siguiente artículo presenta un proceso de investigación y desarrollo inclusivo que tiene como objetivo la cocreación de un sistema de apoyo tecnológico para la accesibilidad cognitiva en entornos urbanos. Se plantea una metodología de investigación inclusiva y codiseño, llevada a cabo por un grupo multidisciplinar de las áreas de la educación, sociología, ingeniería y diseño, en conjunto con un grupo asesor conformado por 11 adultos con discapacidad intelectual, quienes participaron como expertos por experiencia, adoptando el rol de coinvestigadores y codiseñadores de apoyos que potencian la vida independiente. Entre los resultados se describe un lenguaje pictográfico codiseñado con el grupo asesor y la aplicación PICTOS para apoyar y evaluar la accesibilidad cognitiva en servicios presenciales o físicos. La discusión final aborda los aprendizajes sobre el impacto de la accesibilidad cognitiva y la investigación inclusiva en los procesos de codiseño.
The Influence of Compensation and Work Discipline on Employee Performance at PT Sygma Exa Grafika
Authors: Permatahati Muthi Nafisah , Indiyati Dian
Published: February 2024

In today's fiercely competitive business environment, a company's success in the competition is closely tied to its human resources. Companies must enhance the quality of their human resources to emerge victorious in this competition. Effective management and development of human resources within an organization are essential to improve the performance of individuals, enabling them to contribute to the company's goals. Numerous factors influence human resource performance, either enhancing or hindering it. Compensation and work discipline are two factors that can significantly impact human resource performance. This study aims to understand the implementation of compensation and work discipline at PT Sygma Exa Grafika, as well as the performance of human resources in the company. The research also seeks to determine the extent of the influence of compensation and work discipline on human resource performance at PT Sygma Exa Grafika, both simultaneously and individually. Data for the study were collected using a questionnaire distributed to 100 individuals, employing a saturation technique covering the entire population. The data analysis utilized Structural Equation Modeling (SEM) with Partial Least Squares (PLS). The results reveal that employee compensation at PT Sygma Exa Grafika is rated at an average of 375.6 or 75%, falling into the "good" category. Work discipline at the company averages 314.8 or 74%, also categorized as "good." Hypothesis testing indicates that compensation has a moderate impact of 0.225 on employee performance, while work discipline has a significant impact of 0.470. In summary, both compensation and work discipline, individually and collectively, have a positive and significant influence on human resource performance. This research provides insights into the conditions at PT Sygma Exa Grafika, offering a basis for improvement and system development within the company.
The Impact of IFRS 9 Compliance on Financial Statement Outputs: An Exploratory Study of a Sample of Commercial Banks
Authors: Fadhil Neamah Mohammed
Published: February 2024

The current research aims to adopt Financial Reporting Standards No. (9) using one of the alternatives to accounting measurement (fair value/amortized cost). This approach transforms financial statements into a crucial tool for management to assess financial performance. This application is expected to alter the actual reality of the economic unit, influencing the value of the stock and impacting competitive value in the future. Several statistical tools and equations related to fair value/amortized cost, as outlined in International Accounting Standard 9, were employed. The research yielded several conclusions, with the most significant being that the implementation of the fair value accounting model by the International Financial Reporting Standard (IFRS9) can lead to results that truly reflect the financial performance and position of the research sample, instilling confidence in the financial statement outputs. After identifying the key conclusions, the research provides various recommendations. Foremost among them is the encouragement for banks to adhere to international financial reporting standards, particularly the International Financial Reporting Standard (IFRS9). This recommendation stems from the evident importance of presenting financial statements in a manner that accurately mirrors their actual reality.
A Review on Financial Fraud Detection using AI and Machine Learning
Authors: Kamuangu Paulin
Published: February 2024

This study thoroughly explores advanced approaches for addressing financial fraud, focusing on the effectiveness of Machine Learning (ML) and Artificial Intelligence (AI). Recognizing the drawbacks of outdated methods, the examination aims to analyze the current situation, closely examining the efficiency and limitations of ML and AI techniques while mapping out intricate directions for future research. We delve into the intricate history of financial fraud, uncovering the inherent constraints embedded in conventional rule-based and manual detection approaches. Then, machine learning (ML) and artificial intelligence (AI) are discussed, highlighting significant research and successful implementations that have transformed the field of fraud detection. While analyzing the assessment metrics, we use various measures such as accuracy, precision, recall, F1 score, and the enigmatic ROC-AUC. Then, diverse ML and AI algorithms are introduced, including the mysterious Random Forest, the reliable Support Vector Machines (SVM), and the complex neural networks. As comparative analysis unfurls, uncovering the strengths and weaknesses inherent in distinct ML and AI systems. Beyond the limits of performance measures, our interpretation transcends, diving into the real-world ramifications and the labyrinth of possible routes for refinement and advancement.
Música y ecología
Authors: Carbajal-Vaca Irma-Susana
Published: February 2024

Este texto presenta una reflexión orientada a la línea temática Posthumanismo y crítica al Antropoceno en las prácticas artísticas. Mediante la investigación “Así cantan los árboles de mi región: Voces de esperanza para México”, se convocó a compositores mexicanos a realizar canciones que socializaran conocimientos y mensajes sobre la importancia del cuidado de los árboles de distintas regiones del país. El resultado fue un compendio de 25 canciones donadas por 20 compositores provenientes de Aguascalientes, Baja California, Chihuahua, Durango, Jalisco, Nayarit y Querétaro quienes, durante la etapa de sensibilización, dialogaron con ambientalistas y expertos en agronomía, arquitectura, biología, ingeniería y música que compartieron su conocimiento sobre temáticas ambientales. El proyecto se sustentó en la premisa del “personalismo analógico” propuesto por Mauricio Beuchot, que considera al ser humano como responsable y capaz de lograr un equilibrio proporcional con la naturaleza. La investigación se articuló con la perspectiva transdisciplinar de la ciencia de incidencia promovida por el CONAHCYT a través del programa de Sistemas Socioecológicos y Sustentabilidad de los Programas Nacionales Estratégicos (Pronaces). Se asumió que la ecopedagogía es un recurso fértil para formar líderes que sensibilicen a sus comunidades sobre la fragilidad de los ecosistemas y la necesidad de asumir actitudes ecológicas. En el proceso de diálogo se encontró que las reflexiones merecían ser analizadas desde la óptica del Antropoceno.
Futuros que ya fueron, presentes que no son. El horizonte posthumanista-descolonial y la idea de progreso
Authors: Mercado Raquel
Published: February 2024

El presente artículo se enmarca en un cruce de lecturas: desde la teoría feminista contemporánea sobre los imaginarios configurados a través de la idea del presente y futuro, atendiendo concretamente a “los imaginarios de lo posible” latinoamericanos, discutidos desde los EFLAC (Encuentros Feministas Latinoamericanos y del Caribe) de finales de los años noventa y, a las “Utopías-distopías” occidentales en su idea de progreso desde los nuevos materialismos feministas. Los primeros comprendidos y actualizados desde la postura de Yuderkys Espinosa Miñoso y Ochy Curiel, en los documentos El futuro ya fue: una crítica a la idea del progreso en las narrativas de liberación sexo-genéricas y queer identitarias en Abya Yala y Construyendo metodologías feministas desde el feminismo decolonial, compilados por Julia Antivilo este año (2023) en el libro Trayectorias del pensamiento feminista en América Latina. Los segundos para contrastar complementar la idea de Posthumanismo y conocimiento posthumano desde la propuesta de la pensadora italo-australiana Rosi Braidotti (2019).  El objetivo que se propone es el de cartografiar la discusión de ambos imaginarios, para reconocer los lugares y desplazamientos de poder que operan en un posible proyecto histórico -de vínculos y no de cosas- indagando cuáles son sus tensiones localizadas. La hipótesis del artículo implica la complementación entre ambas miradas, de manera general, en la fase del capitalismo actual, desde una posición encarnada y territorializada. Para las tres pensadoras, la producción de afectos y sensibilidad a través del arte, implica también un hecho fundamental en la construcción de memorias y contramemorias, comunidad y narrativas, que no decantan en “cosas” como proyecto artístico, sino en redes y pedagogías críticas. Al ser reciente la teoría y las publicaciones académicas se plantea un objetivo muy concreto en el presente trabajo: ¿cuáles son los principales puntos de convergencia y de tensión entre ambas perspectivas? y, ¿cuál es la relación de los anteriores puntos nodales con la producción de visualidades feministas o disidentes? Sin la pretensión de desarrollar dichos puntos de manera exhaustiva, se busca comenzar a cartografiar este necesario diálogo.
Reflexionar es Producir: la Teoría como (Otra) Herramienta Epistemológica para la Producción Artística
Authors: Martínez Ortiz Gabriela
Published: February 2024

Las teorías del arte dentro de las academias universitarias han sido parte de la formación profesional de futuros artistas y, en este sentido, tradicionalmente, han concentrado su función en enseñar a los estudiantes a fundamentar y justificar teóricamente sus obras. Mi propia práctica como docente de materias teóricas en escuelas de arte, me ha llevado a cuestionar cuál es el papel de las teorías del arte en relación con las prácticas artísticas; y, si este debe quedar reducido a las exigencias académicas que tienden a replicar y reproducir el conocimiento teórico, pero no procuran la generación de un conocimiento propio surgido de la relación directa entre teoría y práctica. Con este ejercicio intento mostrar que se requiere generar una teopraxis entre las teorías del arte y las prácticas artísticas por medio de un diálogo epistemológico que replantee el papel de la teoría como una herramienta de producción artística a través de la dialéctica entre los retos prácticos (visuales, plásticos, auditivos, corporales) y las formas en que las teorías pueden ayudar a resolverlos desde los propios lenguajes artísticos. Por otra parte, reflexiono sobre la necesidad de distanciar el pensar epistémico y el conocimiento propio de las teorías del arte de los cortes positivistas de las academias universitarias, para formularlo desde una perspectiva situada que subsuma la existencia de otros sujetos y comunidades epistémicas, pero también afectivas y reflexivas. De manera general, examino la posibilidad que la realización de otras prácticas artísticas en relación con un abordaje epistémico de las teorías del arte, a partir del reconocimiento de la posición que ocupan las y los sujetos que generan conocimiento (teórico y artístico), contribuyan al florecimiento de otros discursos, otras formas de hacer arte y otras formas de existir en el marco del campo del arte.
Reseña de Las sin tierra. Rompiendo el mito de la musa andaluza de Soledad Castillero Quesada
Authors: Díaz Márquez Ilse Guadalupe
Published: February 2024

El libro Las sin tierra. Rompiendo el mito de la musa andaluza, con el que Soledad Castillero Quezada obtuvo en 2021 el Premio Memorial Blas Infante, es una investigación sobre la situación de las trabajadoras en el campo andaluz, específicamente en el sector del fruto rojo. La autora contrapone a la folclorización con la que a lo largo de la historia del arte se ha representado a las mujeres andaluzas, la lucha histórica de éstas por la reivindicación de sus derechos y la enlaza, a través de la etnografía colaborativa, con la actual lucha de las jornaleras de Huelva, constituyendo de este modo un relato colectivo en el cual queda de relieve que son las mujeres del sur quienes sostienen la alimentación a nivel global.
Alejandra Pizarnik: La poeta Lilith
Authors: Ferrero Cándenas Inés
Published: February 2024

Decía Paul Valéry que “la poesía absoluta sólo puede proceder por maravillas excepcionales: las obras que compone constituyen enteramente lo que se advierte de más raro e improbable en los tesoros imponderables de una literatura”. Y aunque Valéry hablaba de los simbolistas, lo mismo es cierto para Alejandra Pizarnik, quien persiguió hasta su último aliento encontrar la perfección de su arte, la musicalidad del lenguaje. El trabajo hecho por las grandes poetas de todas épocas y lugares trata de vincular el pasado poético anterior con el pasado que vino después de ellas, tomando enseñanzas de aquí y de allá, según sean de interés. Este gesto remite a un juego de influencias e inspiraciones literarias que se dio de forma natural en Alejandra Pizarnik. Este libro versa sobre ese diálogo, sobre el intercambio de signos precisos que Pizarnik realizó con la tradición poética moderna, y al examinar detenidamente su poesía, en concreto Árbol de Diana (1962), será también éste un libro que verse sobre la búsqueda del silencio musical, el relato ardiente y la otredad poética a la par que considera las dificultades que, como autora de mitad del siglo XX, Pizarnik tuvo que enfrentar.
Characterization and In vitro Dissolution Assessment of Pitavastatin-polyvinyl Pyrrolidone and Kollicoat®IR Solid Dispersions Prepared by Solvent Evaporation and Fusion Methodologies
Authors: Mikrani Ishtyaque , Prattay Kazi Milenur Rahman , Sarkar Md Raihan , Sikdar KM Yasif Kayes , Rahman Mashiur , Samadd Md Abdus
Published: February 2024

Pitavastatin (PTV) is a potent lipid lowering drug that acts on hepatocytes by blocking the 3-hydroxy-3- methylglutaryl-CoA reductase enzyme. As a Biopharmaceutical Classification System (BCS) Class II drug, PTV possesses very low water solubility; hence, poor bioavailability leads to poor drug delivery to the target organ. The study aims to develop various PTV solid dispersion (SD) formulations and to investigate the release profile of PTV SD systems. Different PTV physical mixing and SD formulations were prepared using polyvinylpyrrolidone (Kollidon®90F) and Kollicoat®IR hydrophilic polymers by fusion and solvent evaporation approaches. The efficacy of the formulations was evaluated by in vitro PTV release studies. Subsequently, the characterization of SD formulations was performed using thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The in vitro release studies confirmed that all the developed formulations showed a comparatively better release percentage (75.31–98.45%) than the pure PTV (61.76%) after 60 min. Additionally, the outcomes showed that raising the concentration of both polymers improved PTV's ability to dissolve. In comparison to physical mixing formulations, SD formulations made using fusion and solvent evaporation processes performed better during dissolution. The TGA, DSC, and FTIR studies confirmed that the tested SD formulations (1:2, 1:3 ratios) were stable at high temperatures with a reduction in crystallinity and no notable interaction between the drug and polymers. The SEM analysis showed that the PTV was evenly spread out in the carriers and that the crystal-like structure of the PTV had changed into an amorphous form.
Bangladesh Pharmaceutical Journal 27(1): 37-50, 2024 (January)
Antidepressant, Antidiarrheal, Thrombolytic and Phytochemical Profiling of Ethanol Extract of Amomum aromaticum Leaves: In vivo and In vitro Approaches
Authors: Shetu Enama Nabi , Sayeed Mohammed Abu , Arman Mohammad , Maruf Mohammad Rifat Alam , Sayem Syed al Jawad , Islam Md Azimul
Published: February 2024

The study evaluated several pharmacological effects including antidepressant, antidiarrheal and thrombolytic activities of ethanol extract of Amomum aromaticum leaves (EEAA). Upon the assessment for qualitative phytochemical groups in the extract, several doses of EEAA (1000 - 4000 mg/kg) were studied to find acute oral toxicity in mouse for safe dose selection. Then EEAA was tested whether it demonstrates antidepressant activity in tail suspension test (TST) and forced swim test (FST). Antidiarrheal and clot lysis activities of EEAA were evaluated in castor oil-induced diarrhoea in mouse and In vitro clot lysis method, respectively. Oral administration of EEAA (1000 - 4000 mg/kg) showed no morality after 10 days, and no sign of acute toxicity observed within 24 hrs post-treatment. The qualitative phytochemical screening showed the presence of carbohydrate, alkaloid, flavonoid, tannin, saponin, and polyphenol groups in EEAA. The TST and FST resulted with significant improvement in mobility in mice treated with EEAA (400 mg/kg), where fluoxetine (20 mg/kg) was used as standard in both tests. EEAA treatment also showed a moderate dose-dependent anti-diarrheal effect. The 400 mg/kg oral dosing for 14 days decreased the rate of defecation by 52.8% compared to the control group. This study also demonstrated that EEAA possesses clot lysis activity. Hence, further intense investigations are suggested to identify specific potential active phytochemicals.
Bangladesh Pharmaceutical Journal 27(1): 51-58, 2024 (January)
Quantification of Riboflavin and Thiamine in GI (Geographical Indication) Branded Yogurts Collected from Bogura, Bangladesh Using HPLC Equipped with a Fluorescence Detector
Authors: Mia Md Lemon , Sultan Md Zakir , Ali Md Ashraf , Simol Hasina Akhter , Salam Md Abdus
Published: February 2024

Thiamine (vitamin B1) and riboflavin (vitamin B2) are both essential vitamins for human health. Thiamine (vitamin B1) is essential for energy metabolism, nervous system function, carbohydrate metabolism, cardiovascular health, digestion, muscle function, etc. On the other hand, Riboflavin (vitamin B2), which acts as an antioxidant, is essential for energy production, healthy skin, hair and nails, eye health, red blood cell production, nervous system function, etc. Due to its specialty, Bogura's famous yogurt was recognized as a Geographical Indication (GI) on June 26, 2023 by the Directorate of Patents, Designs, and Trademarks (DPDT) under the Ministry of Industry, the Government of the People’s Republic of Bangladesh (Prothom Alo, 2023). The purpose of the study was the quantitative determination of two water-soluble vitamins, thiamine and riboflavin, in the GI branded yogurt and whey (Ghol), collected from Bogura, Bangladesh to ensure health benefits. The methods employed for the quantitative analysis of these vitamins were reversed-phase high performance liquid chromatography (RP-HPLC) equipped with a fluorescence detector. The extraction process involved acid hydrolysis followed by enzymatic hydrolysis with takadiastase enzyme. Chromatographic separation was achieved with a Shimadzu Prominence HPLC system using isocratic elution mode on a C18 column (4.6 mm × 250 mm, 5 μm). The correlation coefficients for thiamine and riboflavin were 0.9975 and 0.9974, respectively. The recovery rates for thiamine and riboflavin were found as 97.70% and 105.40%, respectively. Twenty-two samples were analyzed. Thiamine and riboflavin were found in the range of 0.0647 to 0.1396 mg/100 g and 0.0227 to 0.3749 mg/100 g, respectively. It can be concluded that these yogurts were rich in thiamine and riboflavin. Therefore, these yogurts are beneficial for health.
Bangladesh Pharmaceutical Journal 27(1): 59-66, 2024 (January)
Development and Validation of RP-HPLC Method for Routine Analysis of Osimertinib
Authors: Akter Halima , Rajbangshi Joy Chandra , Faruk Omar , Shill Diponkor Kumar , Rouf Abu Shara Shamsur
Published: February 2024

Osimertinib is a newly approved treatment line for the non-small cell lung carcinoma actively caused by mutation in EGFR and T790M. The present study was targeted to originate a validated method for the qualification as well as quantification of osimertinib through RP-HPLC in bulk and its pharmaceutical formulation. The mobile phase, 65% triethylamine buffer (pH 2.5) and 35% acetonitrile (v/v) was run through a prontosil column (C18, 4.6×150 mm i.d., 3.5 μm particle size) at a flow rate of 0.7 ml/min. A PDA plus detector was used to scan the absorbance over 210 to 360 nm. Validation study performed following the ICH guidelines Q2 (R1) was found the developed method to be specific, precise, accurate, linear over the range of 64–96 μg/ml with R2 > 0.999, robust and rugged. The % recovery of osimertinib at different levels ranged between 99.32% and 100.37% from tablet formulation (Osicent). The method holds promise for analysis of osimertinib in bulk, pharmaceutical formulations and for further research.
Bangladesh Pharmaceutical Journal 27(1): 85-91, 2024 (January)
Characterization of Lactic Acid Bacteria (LAB) Isolated from Homemade Fermented Kimchi in Bangladesh
Authors: Begum Kohinur , Kubra Khodijatul , Aowal Rabiul , Ema Nushrat Jahan
Published: February 2024

The purpose of this present study was to explore lactic acid bacteria (LAB) from homemade kimchi. Traditionally, kimchi was made in this study at home using fresh vegetables such as cabbage, carrots, radish, green onion leaf, red pepper, garlic, ginger, salt and rice flour, and fermented for seven days. LAB were isolated using selective media and identified by macroscopic and microscopic morphological analysis and short biochemical tests such as catalase, oxidase and Kliger's iron agar (KIA) test. Probiotic potential of LAB was investigated by acid, salt, temperature tolerance and sugar including glucose, fructose, sucrose, xylose and lactose fermentation test. Four distinct single colonies were isolated from four different kimchi preparations. All isolated bacteria were identified as lactic acid bacteria and found gram positive, non-spore forming, survive in both aerobic and anaerobic condition, catalase and oxidase negative. Isolated LAB survive in both highly acidic (pH 2) and alkaline (pH 8) medium, up to 4% NaCl concentrations and at temperatures ranging from 4°C to 55°C. The isolated LAB have also ability to ferment sugars. These findings reveal that isolated LAB found suitable to survive in the environment of human gastrointestinal tract and have probiotic potential.
Bangladesh Pharmaceutical Journal 27(1): 103-109, 2024 (January)
Theoretical Explorations of Structural, Electronic, and Spectroscopic Properties of a Series of Ruthenium Schiff-Base Complexes
Authors: G. Sarkar C.
Published: February 2024

The present work concentrates on theoretical investigations of the substituent effects on the reactivity, electronic properties, and UV-vis spectra of a series of ruthenium-Schiff base complexes using density functional theory (DFT). Four complexes are studied herein, where N-(2¢-hydroxyphenyl)benzaldimine is the Schiff base differing in the para-substituent (R) on the benzaldehyde fragment (R = CH3, H, Cl, CF3). B3LYP/SDD-6-31G(d,p) level of theory has been used for computational studies (Gaussian 16). All the structures have been optimized, and the compositions of the frontier molecular orbitals have been analyzed. The energies of HOMO and LUMO and the global indices parameters have been calculated, which reveals that [Ru(PPh3)2(CO)(L-CF3)] is the most reactive complex and [Ru(PPh3)2(CO)(L-Cl)] the least. Time-dependent density functional theory (TDDFT) has been performed to study the electronic absorption parameters. The effect of solvent polarity upon absorption spectra has also been observed. It is found that the lowest energy absorptions in all the complexes show a blue shift with the increase in polarity of the solvent. Natural bond orbital (NBO) analysis of the complexes has been conducted to examine the charge distribution on the donor and the acceptor atoms along with their variation with change in the para-substituent.
Mechanical Properties of Epoxy-Based Composite Reinforced with Kenaf, Grewia Serrulatta, Human Hair Fibers
Authors: Venugopal P. , Thanigaivelan R.
Published: February 2024

Composite products (polymer based) finds application in industries such as automobiles, space, home appliances, the navy, and defense. This paper focused on preparing a composite specimen with natural fibers such as kenaf, grewiaserrulatta (grewia), and human hair to replace synthetic fiber. Epoxy resin BA LY 556 (Bisphenol-A) is considered a matrix material. Four specimens are prepared with 195 g of matrix and 105 g of fibers in the weight fraction method. Among 105 g fibers, the grewia fiber of 15 g is fixed constant, and the remaining 90 g of fibers, namely kenaf and human hair, are distributed as 0 g, 22.5 g, 67.5 g, and 90 g, respectively. As per ASTM standards, the mechanical property investigation was conducted, namely tensile, flexural, and impact tests. The result shows that the highest mechanical strength, i.e., tensile, flexural, and impact, are obtained in specimen A which is composed of 195 g matrix, 90 g kenaf, and 15 g grewia. Also, specimen B shows the highest strength in flexural properties, composed of 195 g matrix, 15 g human hair, and 90 g grewia. Additionally, microscopic analyses are conducted to verify the orientation and substrate bonding of fibers in the composites.
Classification of Image-Based Wheat Leaf Diseases using Deep Learning Approach: A Survey
Authors: Sharma T. , Sethi G. K.
Published: February 2024

This paper focuses on detecting leaf diseases in wheat plants from the beginning to the end of the plant's life cycle. It highlights the best techniques for detecting various types of wheat leaf diseases and emphasizes the use of computer vision, image processing, and machine learning. The main focus is on classifying these diseases through deep convolutional neural networks, a popular image recognition and classification approach. The paper reviews various techniques for classifying image-based wheat leaf diseases, including spot blotch, stripe rust, brown rust, and powdery mildew. The paper aims to summarize the state-of-the-art techniques for detecting wheat leaf diseases.
Study of Corrosion Inhibitory Effects of Alcoholic Extracts of Tinospora Cordifolia on Metal Tin in Acidic Media HCl with and without Additive (KCl)
Authors: Mandawara V. , Chaturvedi A.
Published: February 2024

The corrosion inhibitory efficiency of Tinospora Cordifolia stem and leaf extract in different concentrations of HCl acid (0.5, 1, 2, and 3N) was examined using weight loss and thermometric methods in the absence and presence of an additive (KCl). According to the findings of this investigation, inhibition efficiency (ɳ%) rises with increasing inhibitor concentration as well as acid strength, and additional improvement in inhibition efficiency was found with the addition of additives (KCl) owing to a synergistic effect. According to the findings, stem extract is a better corrosion inhibitor than leaf extract. The maximum inhibition efficiency was observed for stem and leaf extracts (95.76 and 92.47 %) at their maximum concentrations (0.8 %) in the absence of an additive in the maximum strength of HCl acid (3N), while it was observed at 98.58 and 95.29 % in the presence of additive (3N KCl) of maximum strength.
Optimal Efficiency Control of Wind Mill Induction Generator Using Loss Minimization Technique
Authors: Faizal A. A. M. , Rajam R. S.
Published: February 2024

Improvement of the operating efficiency of generators used in large wind power generation systems becomes important since such a large machine's power loss is not negligible. In the conventional method integral controller is used to reduce the power loss by up to 25 % at low wind speeds. The proposed PID controller method is based on flux level reduction, where the flux level is computed from the machine model for the optimum d-axis current of the generator. For the vector-controlled induction generator, the d-axis current controls the excitation level to minimize generator loss. In contrast, the q-axis current controls the generator torque, by which the speed of the induction generator is controlled according to the variation of the wind speed in order to produce the maximum output power, thereby improve the efficiency of the induction generator.
Bianchi Type-I Cosmological Model with Perfect Fluid in Modified f(T) Gravity
Authors: Mete V. G. , Dudhe P. S. , Ingle V. M.
Published: February 2024

In this paper, the Bianchi type I cosmological models with perfect fluid is investigated in the framework of  f(T) theory of gravitation. The functional form of the function f(T) such as f(T) = T + βT2 is used for investigation. The physical and kinematical properties of the models are obtained and analyzed. We obtained an accelerating and expanding universe.
Unsteady Williamson Fluid Flow Over Exponentially Stretching Sheet in the presence of Non-Uniform Heat Generation or Absorption and Inclined Magnetic Field
Authors: Akter R. , Islam M. A.
Published: February 2024

The effect of an inclined magnetic field on unsteady magneto hydrodynamic Williamson fluid flow past an exponentially stretching sheet with joule heating, non-uniform heat generation or absorption, and suction or blowing is investigated numerically in this work. The reduced non-linear ordinary differential equations are obtained from governing partial differential equations using appropriate similarity transformations. The reduced equations are then solved with the help of bvp4c in MATLAB. The effects of various physical parameters on velocity, temperature and concentration profile, skin friction coefficient, Nusselt, and Sherwood number are described through graphs and tables. The result indicates that the rising values of the Weissenberg number decrease the velocity profile and increase the temperature and concentration profiles. It is also found that an inclined magnetic field reduces fluid velocity.
Implementation of Test Suites using Enhanced State Chart Diagrams: A Case Study
Authors: Gupta K. , Goyal P.
Published: February 2024

An essential part of software engineering is testing. A series of pre-testing tasks should be completed before performing testing tasks. Implementing test suites is one of the pre-testing phases. In this work, a case study has been used to implement the suggested method for implementing test suites. The strategy is based on an analysis of UML (Unified Modelling Language) enhanced state chart diagrams (SCDs). UML state chart diagram analysis, AD (activity diagram) conversion into a graph, AG (activity graph) simplification, and test suite implementation are all steps in the generating process.
Perfect Fluid Coupled String Universe in f(R,T) Gravity
Authors: Pawar K. , Dabre A.
Published: February 2024

In this paper, we have investigated the Bianchi type VI0  space-time in the presence of string of clouds coupled with perfect fluid within the context of f(R,T) gravity. The exact solutions to the field equations have been obtained by considering the expansion scalar Θ is proportional to the shear scalar σ and the exponential form of an average scale factor. Some physical and kinematical parameters of the constructed model have been discussed and presented graphically, and it is interesting to note that the resultant model resembles the recent observational data. Also, we have discussed the energy conditions for a perfect fluid-coupled string cosmological model.
Hypsometric Analysis of WRC-1 Watershed, Chargarh River Basin, Central India: A Remote Sensing and GIS Approach
Authors: Fuladi A. , Deshmukh M. S.
Published: February 2024

Hypsometric analysis is a valuable tool for determining the tectonic evolution of a river basin and the erosion susceptibility. It is also important for integrated watershed management, which include selecting suitable locations for groundwater recharge structures and for conservation of soil and water. This type of study can analyze the relationship between horizontal cross sectional area and the altitude of the watershed. It evaluates the hypsometric curve and hypsometric integral, as generated for the WRC-1 watershed, Chargarh river basin through remote sensing and GIS technique. In the present case, hypsometric analysis was carried out using Survey of India topographic maps, Arc map-10.2 software and SRTM-DEM. The hypsometric integral is calculated using mean elevation minus minimum elevation, divided by relief. The hypsometric curve, with a value of 0.69 for the hypsometric integral clearly indicates an inequilibrium stage (youthful stage) of geomorphic development, which is highly susceptible to erosion. These interpretations can further utilize appropriate measures of soil and water conservation for long-term development within the WRC-1 watershed.
Performance Evaluation of a CI Engine Using Binary, Ternary, and Quaternary Bio-Diesel Fuel Blends
Authors: Kumar A. , Dutta J. , Haloi P. , Makunike D. F.
Published: February 2024

The present study utilizes dual biodiesel-alcohol blends to evaluate the engine performance. Five test fuels were prepared on a volume basis with different constituting percentages, each consisting of 70 % pure diesel (D70), a binary blend of biodiesel: B1 (WCO30), a ternary blend of biodiesel: B2 (WCO15 and WCCO15) and three quaternary blends: B3 (WCO10, WCCO15, Bu5), B4 (WCO15, WCCO10, Bu5) and B5 (WCO10, WCCO10, Bu10). The biodiesel is made from used cooking oil. The effects of each blend on engine performance were examined by performing the engine test on a single-cylinder, four-stroke, water-cooled Kirloskar compression ignition (CI) engine at various engine speeds and loads. The indicated power (IP), brake power (BP), friction power (FP), fuel consumption (FC), and mechanical efficiency (%) were evaluated, and the experimental results show that the performance is best for B3 when run with 75 % of the maximum load capacity of the engine. The study thus justifies that to lower the density and viscosity of biodiesel fuel, adding alcohol can be acknowledged as a valuable application to boost the engine's brake thermal efficiency (BTE). This also lowers the emissions of oxides of nitrogen (NOx), carbon monoxide (CO), and hydrocarbons (HC).
Design and Analysis of Energy-efficient Algorithm for Wireless Networks
Authors: Krishan R.
Published: February 2024

The Industrial, Scientific, and Medical (ISM) frequency spectrum is used by the Wireless Local Area Network (WLAN) for its operation. Due to a limited number of available channels for WLAN operation, frequency channel assignment becomes very difficult. In WLAN, the access points (APs) are widely deployed, and because they share the same frequency, they start interfering with each other and causing more energy consumption. So WLAN frequency channels should be managed and assigned carefully to increase the energy efficiency of the wireless network. This paper proposes an energy-efficient channel assignment algorithm (EECAA) to improve the performance of the network. The suggested approach improves the network's energy efficiency in terms of global delay, packet data loss, and the count of data retransmissions. The extensive simulation study demonstrates that, when compared to the channel handoff scheme and D2MD channel allocation algorithm for various traffic and network conditions, the proposed EECAA method greatly increases network throughput.
Quantification of β-Sitosterol by Validated High Performance Thin Layer Chromatography (HPTLC) Densitometric Method in the Flowering Buds of Mesua ferrea Linn
Authors: Sutradhar J. , R. Sarkar B.
Published: February 2024

The medium-sized to large-sized tree Mesua ferrea Linn, commonly known as Nagakesara in India, can grow to be around 20 to 30 meters high and has incredibly durable wood. The fruiting season runs from January to March and April to October. The buds are globular, 2mm diagonally, and have scales in the axillary buds. It includes a significant amount of β-sitosterol amides, which are important from a biological perspective. In the current study, we used high-performance thin-layer chromatography (HPTLC) in association with densitometry to quantify these marker chemicals from Mesua ferrea Linn flowering buds. The technique was found to be accurate. For intra-day analysis, the relative standard deviation (RSD) values of β-sitosterol ranged from 1.16 to 1.60%, while for inter-day analyses, the values ranged from 0.68 to 1.77%. By performing a recovery study at three different levels for the standard chemicals, the accuracy of the approach was assessed, and average recoveries were determined to be 99.98%. It was observed that this TLC-densitometric approach was accurate, specific, particular, sensitive, and easy. For the simultaneous analysis of β-sitosterol from flowering buds of Mesua ferrea Linn, it can be employed in regular quality control.
Anisotropic Bianchi Type VI0 Cosmological Models in a Modified f(R,T) Gravity
Authors: M. R. Ugale  , S. B. Deshmukh
Published: February 2024

We investigate the spatially homogeneous and anisotropic Bianchi type VI0 cosmological models with modified Holographic Ricci Dark Energy subjected to f(R,T) gravity. We have obtained the solution of the field equations with the help of the power law relation among the scale factors. Dynamical parameters are calculated by using the connection between pressure and energy density. The kinematical implications of the models are also examined. Graphical presentation of different cosmological parameters is shown for distinct values of the parameter of the model
Numerical Solution of Cahn-Allen Equations by Wavelet Based Lifting Schemes
Authors: Angadi L. M.
Published: February 2024

The Cahn-Allen equation is a reaction-diffusion equation of mathematical physics that describes the process of phase separation in multi-component alloy systems and order-disorder transitions. This paper presented a numerical solution of Cahn-Allen equations by Lifting scheme using different wavelet filter coefficients. The numerical results obtained using this scheme are compared with the exact solution to demonstrate the accuracy and fast convergence in less computational time than the existing scheme. Some problems are taken to show the validity and applicability of the scheme.
2D ZIF-L(Zn) for Hybrid Copolymerization of Methyl Methacrylate and ε-Caprolactone under Solvent-free Medium
Authors: Yasmn F. , Rahaman M. A.
Published: February 2024

Herein, we report the hybrid copolymerization of methyl methacrylate (MMA) and ε-caprolactone (CL). 2D metal-organic frameworks, ZIF-L as a robust polymerization catalyst, can catalyze this hybrid copolymerization. Though these monomers differ from each other in structure and activity, different characterization techniques (1H-NMR, 13C-NMR, GPC, DSC, fractional precipitation techniques) confirm that they form biodegradable block copolymer PMMA-b-PCL with high molecular weight (1190 kg/mol). Also, PXRD and SEM results of the recovered ZIF-L reveal that the catalyst ZIF-L is remarkably stable even after a long-time polymerization reaction with no significant loss in activity.