bluuebunny/crossref_metadata_2025 huggingface dataset:
LA BÚSQUEDA DE BUEN VIVIR COMO MANIFESTACIÓN DE AGENCIA COLECTIVA E IDENTIDAD PROFESIONAL: UNA EXPLORACIÓN TEÓRICA DEL MOVIMIENTO DOCENTE CON FOCO EN CHILE Y LATINOAMÉRICA
Authors: Torres Betzabe , Avilés Nidia , León Violeta
Published: January 2025

Este artículo propone cómo la búsqueda por el bienestar en el trabajo docente es una expresión agéntica que no es una cuestión individual sino colectiva. Así, conceptualizamos agencia y bienestar desde una perspectiva latinoamérica, donde se entenderá agencia como todo aquello que se realiza en el presente, informado por historias pasadas e inspirado en una esperanza futura de que las cosas sí pueden ser de otra manera. Lo anterior, fundado en las ideas de Paulo Freire y la filosofía del Buen Vivir, desde donde entenderemos a la profesión docente como dialógica y colectiva.
El concepto de agencia nos permite ver el trabajo y profesión docente como transformadora y productora de conocimiento. El concepto de bienestar, entendido desde la filosofía del buen vivir, plantea que no se puede aspirar al bienestar individual si no existe uno colectivo.
Finalmente, exploramos cómo en Chile se han dado ciertos movimientos agénticos, por ejemplo, en la movilización docente del presente año, la cual se plantea como una lucha por avanzar hacia la reconstrucción de la educación que todos y todas merecen, lo cual, sin dudas hará eco en la región latinoamericana.
LAS POSIBILIDADES DE PROFESIONALIZACIÓN Y PROYECCIÓN DE LA PRÁCTICA DE ALGUNAS(OS) EDUCADORAS(ES) POPULARES EN SANTIAGO DE CHILE
Authors: Mancini Giovanni
Published: January 2025

La presente investigación se centra en indagar sobre la experiencia de algunas(os) educadoras(es) populares que integran organizaciones de Educación Popular vigentes en Santiago (Chile), con el objetivo de explicar el proceso, mediante el cual, un colectivo logra construir una práctica que apunta a profesionalizar su práctica educativa y organizativa, basado en una contextualización y actualización de la propuesta de Paulo Freire. Esto implica repensar, reflexionar, problematizar, proponer y construir tácticas, estrategias y metodologías, para lograr convertirse en una alternativa real a la educación formal o bancaria, lo que conlleva organizarse, a través de un proyecto de Educación Popular, que incluya un currículo crítico, educadores populares remunerados y procesos educativos que abarquen gran parte de los ciclos de la vida del ser humano. Esta investigación utilizó una metodología de carácter cualitativo, mediante un Estudio de Casos que busca que las problemáticas emerjan desde los mismos sujetos que la vivencian en sus territorios; a través de revisión de documentos, entrevistas, observaciones participativas y grupo focal, es decir, desde las(os) educadoras(es) populares en su contexto, para luego pasar a un proceso de indagación y análisis que permita ayudar a encontrar los caminos para comenzar a solucionarlas.
LAS POLÍTICAS DE EVALUACIÓN Y SUS EFECTOS EN EL QUEHACER DOCENTE: MÁS ALLÁ DE LA ORGANIZACIÓN Y LA GESTIÓN
Authors: Ramírez-Casas del Valle Lorena , Baleriola Escudero Enrique , Sisto Vicente , Aguilera Felipe
Published: January 2025

En las últimas décadas Chile ha llevado a cabo una serie de reformas y leyes centradas en la evaluación del desempeño y rendición de cuentas de los docentes. Uno de los puntos característicos de todas estas leyes, en la línea de las directrices del Nuevo Management Público, es el uso recurrente de instrumentos que concretizan y performan el contenido práctico y cotidiano de esas leyes. El siguiente artículo tiene como propósito reflexionar críticamente en torno a los alcances y efectos de estos instrumentos en el quehacer cotidiano y pedagógico de los docentes, con la consecuente pedagogía que se configura y las perspectivas que quedan fuera del horizonte de posibilidades de acción.
PROBLEMAS MATEMÁTICOS: APLICACIÓN DE ALGORITMOS EN DIVERSOS CONTEXTOS, MÁS QUE UNA SITUACIÓN DESAFIANTE PARA LOS ESTUDIANTES
Authors: Torres Díaz Romi Alejandra , Sanchez Bustos Mario Arturo
Published: January 2025

Esta investigación busca caracterizar la visión que tienen los profesores que realizan clases de matemática en educación primaria y profesores en formación de la misma área, sobre los métodos y elementos necesarios para resolver problemas matemáticos en los distintos ejes del currículum nacional. Para el estudio se realizaron entrevistas a profesores y estudiantes de pedagogía con mención en matemática en una provincia de la Región del Maule, Chile; además, se complementó con las propuestas existentes en textos escolares vigentes a nivel nacional. Los datos se clasificaron de acuerdo a la solución de estos y el nivel de relación con la aplicación directa de algoritmos. Los resultados evidencian que, en su mayoría, sus planteamientos y soluciones demandan poco razonamiento lógico matemático, y más bien se centran en el conocimiento de definiciones formales y operaciones previamente establecidas; perspectiva opuesta a lo planteado por diversos exponentes de la didáctica matemática contemporánea, desde la que nos posicionamos, pues, creemos que un buen problema debería involucrar la búsqueda de una estrategia desconocida y creativa para su resolución.
Palabras claves: problemas matemáticos, resolución de problemas, algoritmos, didáctica matemática, estrategias.
ESTUDIO DE LA PRÁCTICA EDUCATIVA DE UNA PROFESORA NOVEL A TRAVES DE LA DEMANDA COGNITIVA DE UNA TAREA ESCOLAR SOBRE FRACCIONES IGUALES
Authors: Bustos Osorio Bárbara Macarena , Ramos Rodríguez Elisabeth
Published: January 2025

La enseñanza de las fracciones es un desafío para el docente, tanto por la complejidad matemática y didáctica, como por la adecuada selección de tareas escolares y su puesta en juego en el aula. Este trabajo estudia la práctica educativa de una profesora novel, a través del análisis del nivel de demanda cognitiva de una tarea escolar sobre fracciones iguales. Se consideran tres momentos relativos a una clase: la planificación, la implementación y la reflexión posterior, mirando por completo el proceso que involucra la práctica educativa (antes, durante y después del aula). Bajo el paradigma cualitativo se lleva a cabo un estudio de caso de una profesora novel, quien propone la tarea escolar, la implementa en estudiantes de 11 y 12 años de edad y reflexiona posteriormente. El análisis de la planificación establecía un alto nivel de demanda cognitiva en la tarea, el que se mantuvo gracias a las intervenciones de la docente durante la implementación. La reflexión posterior evidencia intención de la profesora por mantener la demanda cognitiva en pro de mejorar la propuesta de enseñanza. Observar estos tres momentos del quehacer docente, ayuda a tener una percepción más amplia sobre el papel que juegan las tareas escolares en el proceso de enseñanza aprendizaje de la matemática.
Palabras Clave: fracciones iguales, sustracción, demanda cognitiva, enseñanza, práctica educativa.
UNA SIGNIFICACIÓN DE LOS COEFICIENTES DE UNA FUNCIÓN CUADRÁTICA: UNA EXPERIENCIA DE MODELACIÓN EN FORMACIÓN DE PROFESORES
Authors: Pérez Vera Iván Esteban
Published: January 2025

Este escrito da cuenta de la sistematización de una experiencia de modelación matemática enmarcada en un proceso de formación inicial de profesores. Se contextualiza, en particular en tanto problemática, en la doble presencia de la noción de modelación en la educación chilena: a nivel del currículo escolar, como en la formación de profesores. El objetivo fue significar a los elementos que emergen en una experimentación con un auto que se desplaza en un plano inclinado por parte de un estudiante para profesor en su quinto semestre de formación. Mediante un estudio de caso, se da cuenta del proceso de modelación y de la significación desde el fenómeno, de los distintos elementos que componen una función cuadrática.
Palabras clave: Modelación, significación, formación inicial de profesores.
Pedagogía freireana en Brasil y México: narraciones de profesoras como modo de resistencia
Authors: Ramos Andreia Teixeira , Dos Santos Reigota Marco Antonio
Published: January 2025

Este trabajo es resultado de una tesis de doctorado en educación que tuvo como punto de partida a las mujeres del Congo, del estado de Espírito Santo, y que incluye el encuentro con profesoras mexicanas y sus prácticas de re-existencia ecologista en los cotidianos escolares. Por medio de las narraciones de las profesoras de Brasil y México, la intención de este trabajo es presentar la pedagogía freireana como modo de resistencia en los cotidianos escolares. El abordaje metodológico se fundamenta en los estudios con los cotidianos y en la perspectiva ecologista de educación. En la producción de datos, realizamos un trabajo de campo con registros en diarios, conversaciones con los sujetos de la investigación y producción de micronarraciones. La fundamentación teórica se basa en la pedagogía freireana a partir de los movimientos de resistencia mostrados en las narraciones de las mujeres del Congo capixaba y de las profesoras brasileñas y mexicanas que colaboraron con la investigación.
Neoliberalismo y capital cultural. Un estudio de caso sobre la resistencia estudiantil en una escuela secundaria de la ciudad de Tandil, Buenos Aires - Argentina.
Authors: Leivas Marcela
Published: January 2025

Este artículo presenta el análisis de un suceso histórico ocurrido en una escuela secundariade la ciudad de Tandil, provincia de Buenos Aires, Argentina. Sus protagonistas lodenominaron la toma. A partir de recuperar relatos y registros periodísticos, se buscareconstruir el suceso en su dimensión estructural y dinámica, poniendo en diálogo ladesidia de las políticas neoliberales con la resistencia estudiantil y de la comunidad organizada.Esta información ha sido analizada e interpretada a la luz de un marco teóricopropio de las perspectivas críticas del campo de la sociología de la educación, recuperandolos aportes del enfoque estructural-genético y sumando las categorías de hegemonía,juventud y resistencia. El estudio busca caracterizar el impacto en la política educativaimplementada en nuestro país durante el período 2016-2019. La hipótesis del trabajoconsidera que frente a una propuesta de precarización de la política educativa por partede la gestión gubernamental, la comunidad educativa, lejos de disciplinarse o adaptarse,se organiza, resiste y consigue revalorizar el capital cultural puesto en juego.Palabras claves: neoliberalismo, escuela secundaria, articulación hegemónica, identidad,juventud.
Infancias y Educación popular en contexto de pandemia. Reflexiones sobre experiencias político-pedagógicas con niños y niñas de clases populares
Authors: Fatyass Rocio
Published: January 2025

En esta sistematización de una experiencia político-pedagógica relevante se problematiza,en el contexto de pandemia 2020, las emergentes y diversas relaciones formativas,recreativas y de asistencia material que se sostuvieron desde el Centro de EducaciónPopular para la Infancia y Adolescencia (CEPIA), en el que participan niñas y niños declases populares, habitantes de un territorio empobrecido de la ciudad de Villa María,Córdoba, Argentina. En el desarrollo se describe, desde un método etnográco, las transformacionesen las interacciones cotidianas y en el espacio de actuación del CEPIA apartir del aislamiento social, preventivo y obligatorio, y se analiza los nuevos desafíos deesta propuesta durante la conguración pandémica. Asimismo, introduce diálogos entrela perspectiva de la educación popular y los nuevos estudios sociales de la infancia. Loshallazgos permiten reconocer a las niñas y los niños como agentes sociales, capacesde adaptarse a los cambios, resolver y resignicar estas eventuales condiciones, que seencuentran también unidas a procesos de desigualdad social persistentes.Palabras clave: infancias, educación popular, pandemia.
Dialogicidad y construcción de horizontalidad en el Colegio Paulo Freire de San Miguel: reflexiones y aportes desde una sistematización de la propia experiencia asamblearia
Authors: García Diego Alfonso , Lozano Guilleminot Christian , Moreno Pacheco Marcos Jeremy
Published: January 2025

Las prácticas del Colegio Paulo Freire de San Miguel permiten observar una serie deexperiencias de las que se pueden recuperar importantes elementos para la reexión y elanálisis de un proyecto educativo heredero de la tradición freiriana, inspirado en la educación popular. Este proyecto propone un funcionamiento que aporta a la construccióny el desarrollo de espacios educativos liberadores. En ese sentido, la sistematización deexperiencias propuesta por Oscar Jara y su método de cinco pasos fueron desarrolladosy aplicados en la revisión de tres experiencias pedagógicas del Colegio Paulo Freire entrediciembre de 2018 y marzo de 2020. Esto propició una interpretación crítica, posibilitadapor el ordenamiento, la reconstrucción y la validación colectiva de los procesos vividos.A partir de un análisis teórico centrado en la dialogicidad y la horizontalidad, y una reexión aplicada a parte de los resultados de una de las experiencias sistematizadas, se avanzará en esclarecer cómo la práctica asamblearia construye horizontalidad en la línea de la aspiración político-pedagógica de promover la acción dialógica en el ámbito escolar, reemplazando y redeniendo las prácticas, los cargos, los roles y los espaciosrelacionales y decisionales.Palabras clave: dialogicidad, horizontalidad, asamblea, sistematización de experiencias.
Matte, Rancière y el otro Jacotot. Entre la instrumentalización y la emancipación
Authors: Yuing-Alfaro Tuillang , Landaeta Patricio
Published: January 2025

Este artículo indaga en la interpretación realizada por Claudio Matte del método deenseñanza universal de Joseph Jacotot. Estableciendo un diálogo crítico con el autor,Matte llega a proponer un método de instrucción de los sectores menesterosos, la lectoescritura,núcleo de una de las instituciones de educación más prestigiosas de Chile, laSociedad de Instrucción Primaria, fundada en 1856. La hipótesis propone que el discurso,la nomenclatura y el enfoque de esta institución marcará el sentido eminentementeinstrumental de los análisis de la educación chilena hasta hoy. Esta inuencia de Matteen la concepción instrumental de la educación en Chile será contrastada con la lecturade Jacotot realizada por Jacques Rancière con el n mostrar que el debate, los supuestosy las implicancias de ambas miradas bien pueden ofrecer herramientas para repensar losproblemas actuales de la educación chilena.Palabras clave: Joseph Jacotot, Claudio Matte, Jacques Rancière, educación chilena.
Didáctica no-parametral. Nuevos escenarios sociohistóricos y culturales, nuevos desafíos de enseñanza
Authors: Quintar Estela
Published: January 2025

Como respuesta a la pregunta de cuál es el sentido de la enseñanza, en este artículo se hace un reconocimiento de las coordenadas epistémicas y reexiones didácticas desde la realidad y las posibilidades que aporta el descolocamiento epistémico de los sujetos. Inicialmente se hace un recorrido genealógico del devenir de la didáctica no-parametral como propuesta éticopolítica arraigada en la vida sociocultural de la educación en América Latina, misma que pone en tensión la proximidad epistémica y el conocimiento histórico con la formación de docentes investigadores. Al nal se cierra con la pregunta por el sujeto en acción, por el sujeto de la vida que transforma y se transforma.
El proyecto contrahegemónico de la Red Trashumante a través de la educación popular
Authors: Hennig Bruno
Published: January 2025

La presente elaboración es fruto de una investigación que tiene el propósito de presentar las experiencias de educación popular de la Red Trashumante en tanto proyecto contrahegemónico. La investigación llevada a cabo consistió en un diseño analítico y está enmarcada en un abordaje metodológico cualitativo. Me basé principalmente en la observación participante como parte del estudio etnográfico. En esta producción escrita se exponen inicialmente algunas características de la educación bancaria, para dar paso luego a la experiencia de la Red Trashumante, la cual es una organización argentina de educación popular con más de 20 años de existencia, que tiende puentes con diversas organizaciones, comunidades y sujetos, realizando talleres y otras formas de encuentro en tanto formación política, forjando un proyecto popular para la transformación social desde abajo. Se concluye que entre la educación bancaria y la educación popular según la Red Trashumante operan pares disonantes que tensionan entre sí que constituyen modos distintos de configuración de la experiencia pedagógica y que de alguna manera podrían funcionar retrospectivamente como organizadores del texto.Palabras clave: Red Trashumante, contrahegemonía, educación popular, experiencia pedagógica.
Performa Pengering Surya Skala Menengah Tipe Rumah Kaca untuk Pengeringan Kerupuk Singkong
Authors: Pratoto Adjar , Dermawan M. Yoga , Saputra Dendi Adi
Published: January 2025

The present article deals the performance investigation of a medium-scale solar greenhouse dryer for drying cassava chips. The hump-shaped polycarbonate dryer with concrete floor is of 8 m long, 5 m wide, and 3,5 m high. The dryer is equipped with a turbine ventilator and a fan. The latter is powered by a 100 WP solar cell. The dryer contained eight (1,2 m x 0,6 m)-woven-bamboo trays arranged evenly in two stories. Each tray held 48 cassava chips. The testing was carried out at two different conditions, i.e. at average daily insolation of 590 W/m2 and 645 W/m2 respectively. On the average, the dryer could provide an increase in air temperature of 10o – 11oC and a decrease in air relative humidity of 17% - 13,7%. The increase in air temperature and the decrease in air relative humidity depend not only on the average radiation level but also on the radiation profile. As with the drying, the dryer provides a relatively uniform drying rate and performs better than sun drying in terms of drying time and hygienity.
Pengaruh Penambahan Sirip Longitudinal Terhadap Karakteristik Penukar Kalor Pipa Ganda
Authors: Ridwan Iskandar , Kamil Insannul
Published: January 2025

A heat exchanger is a device for exchanging energy in the form of heat between two or more fluids of different temperatures.  There are several types of heat exchangers, including a double-pipe heat exchanger.  This double-pipe heat exchanger is used widely in field practice.  Double pipe heat exchangers are especially suited to standard thick surfaces in fins shape so that heat transfer is increased. The research is conducted to observe how far the use of fins in double-pipe heat exchange affects its characteristics.  The fins added in the study are elongated fins on the outer surface of the inner pipe.  The research is carried out using the working fluid water, with cold fluid in the heat exchanger annulus. From the research carried out, it can be said that heat transfer increases with the addition of fins, namely around 15%, but the pressure drop also increases, i.e., around 904 Pa (29%), compared to double pipe heat exchangers without fins.  Research has also shown that the highest effectiveness of double pipe finned heat exchanger is 0.28, while without fins, it is 0.19.
Kaji Eksperimen Pengeringan Pisang Sale (Pengeringan Konvensional, Efek Rumah Kaca dan Kolektor Surya Plat Datar Tipe Pasif)
Authors: Ridwan Iskandar , Yani Endri
Published: January 2025

Drying is the process of reducing the moisture content of a material to a certain level. The drying process is usually carried out to dry agricultural or plantation products, one of which is bananas. Based on data from the Central Statistics Agency (BPS) in 2021 banana production in Indonesia reached 8.74 million tons. Therefore, the processing of bananas that are not sold out into banana sale is carried out by carrying out the drying process. The moisture content of banana sale that must be reduced is quite large because according to SNI data, the moisture content contained in banana sale is below 40%. In general, banana sale is still dried conventionally, which requires a long time and the quality is not always good. In this research, we will look at the drying characteristics of banana sale using the passive flat plate solar collector method, greenhouse effect method, and greenhouse effect method with the addition of silica gel and conventional drying. Based on the research results, the highest average temperature is the passive type flat plate solar collector method with a value of 48.52ºC, the greenhouse effect method of 43.67ºC, and the greenhouse effect method with the addition of silica gel of 43.44ºC. The highest drying rate for the passive type flat plate solar collector method is 0.5 grams/minute, the greenhouse effect method is 0.34 grams/minute, and the greenhouse effect method with the addition of silica gel is 0.27 grams/minute. In addition, the lowest water content was obtained in drying with the passive type flat plate solar collector method with a value of 35%, the greenhouse effect method of 40.5%, and the greenhouse effect method with the addition of silica gel of 42%.
From Aristotle to AI: Exploring the Convergence of Deepfakes and Persuasion and their Societal Consequences.
Authors: Onebunne Amaka Peace
Published: January 2025

From the foundational tenets of Aristotle’s rhetoric to the digital complexities of today’s AI-driven technologies, the path of persuasive communication involves a variety of tools and tactics. At the center of this technological evolution are ‘deepfakes,’ which are advanced AI-generated videos that are almost indistinguishable from real content. This study uses critical discourse analysis, to show how deepfakes not only exemplify Aristotle’s principles but amplify them in an indistinguishable way, raising concerns about the spread of misinformation, and distrust in the media and political discourse. By juxtaposing rhetoric and contemporary AI technology, this paper sheds light on this shade of persuasion, prompting reflections on its implications, and putting forward suggestions for this increasingly AI-infused communication space.
Neuropaliativismo: uma revisão sobre os cuidados paliativos em pacientes neurológicos
Authors: Sousa Natália Barreto e , Santos Jaqueline Benedito dos
Published: January 2025

Objetivo: Explorar a prática dos cuidados paliativos em pacientes neurológicos, com foco na eficácia desses cuidados em melhorar a qualidade de vida e reduzir o sofrimento em contextos de doenças neurodegenerativas. Métodos: A pesquisa bibliográfica foi conduzida nas bases de dados PubMed e Portal Regional da Biblioteca Virtual em Saúde do Ministério da Saúde, utilizando os descritores “Palliative Care”, “Patient”, “Nervous System Diseases” e “Terminal Care”. Foram selecionados 26 artigos que abordavam diferentes aspectos dos cuidados paliativos em pacientes neurológicos. Resultados: A análise dos artigos revelou uma variedade de resultados, destacando a eficácia dos cuidados paliativos na melhoria do conforto e na gestão de sintomas, especialmente em pacientes com tumores cerebrais e demência. No entanto, foram identificados desafios, incluindo a variação na qualidade e acessibilidade dos serviços de cuidados paliativos, além de obstáculos culturais e educacionais que impactam sua implementação eficaz. Considerações finais: Esta revisão sublinha a importância crítica dos cuidados paliativos em pacientes neurológicos, ressaltando a necessidade de estratégias direcionadas para melhorar a educação dos profissionais de saúde, promover discussões precoces sobre planejamento de cuidados e fortalecer o suporte aos cuidadores familiares. Investimentos em pesquisa são fundamentais para adaptar e validar abordagens que maximizem o benefício dos cuidados paliativos.
Tethered cord syndrome in patients with myelomeningocele: Presentation of 3 cases, technical note on re-anchoring without dural opening
Authors: Basilotta Marquez Yamila , Pirozzi Chiusa Christian , Pérez Zabala Joaquín , Argañaraz Romina
Published: January 2025

Background:

Following myelomeningocele (MMC) repair, 10-30% of patients develop tethered cord syndrome (TCS). Surgical intervention is critical to reverse the stretching of the spinal cord. Here, we describe a technique for spinal cord untethering without dural opening in these patients.

Methods:

Three patients underwent spinal cord untethering without dural opening. The surgical technique involved reopening the previous incision and dissecting the scar tissue attached to the dura. A Spongostan sponge was inserted, and lateral sutures were placed between the dural sac and the adjacent muscles. Clinical outcomes, imaging findings, and urodynamic results were evaluated postoperatively.

Results:

The technique demonstrated positive outcomes in all three cases. Patients showed symptom improvement, better positioning of the spinal cord on imaging studies, and enhanced bladder function on urodynamic evaluations.

Conclusion:

Spinal cord re-untethering without dural opening may be a viable surgical option for selected patients with MMC, offering favorable outcomes with reduced risk.
БИОДЕГРАДАЦИЯ ПЕРФТОРКАРБОНОВЫХ КИСЛОТ В ПОЧВЕ БАКТЕРИЯМИ РОДОВ PSEUDOMONAS И ENSIFER И ИХ АССОЦИАЦИЯМИ
Authors: Шарипов Д.А. , Худайгулов Г.Г. , Стариков С.Н. , Четвериков С.П.
Published: January 2025

В модельном эксперименте (60 суток) показано, что бактерии Pseudomonas mosselii 5(3), P. plecoglossicida 2,4-D и Ensifer adhaerens М1 были способны к росту в почве, загрязненной перфтороктановой (С 8) и перфторнонановой (С 9) кислотами (10 мг/кг), и их биодеградации как по отдельности, так и в ассоциациях. При этом титр микроорганизмов увеличивался на порядок (что сопровождалось снижением содержания перфторкарбоновых кислот до 4,8-6,6 мг/кг), а ассоциаций в вариантах, состоящих из бактерий родов Pseudomonas и Ensifer - на два порядка (с остаточным содержанием ПФКК в почве до 2,8 мг/кг).
ИСПОЛЬЗОВАНИЕ МЕТОДОВ ТЕРМОБАРОГЕОХИМИИ ПРИ ПРОГНОЗИРОВАНИИ СКРЫТОГО ЗОЛОТОГО ОРУДЕНЕНИЯ
Authors: Труфанов А.В.
Published: January 2025

На основе комплекса геологических и термобарогеохимических методов исследования выделены дополнительные критерии прогнозирования и локализации скрытого золотого оруденения среди ри-фейских метаморфических пород Енисейского кряжа, подвергшихся интенсивным метасоматически-гидротермальным преобразованиям.
Biotic factors’ potential in controlling the spread of Heracleum sosnowskyi Manden. (review)
Authors:   Vyatka State University, Ashikhmina T. Ya. ,   Institute of Biology of Komi Scientific Centre of the Ural Branch of the Russian Academy of Sciences, Adamovich T. A. ,   Vyatka State University, Tovstik E. V. ,   Vyatka State University
Published: January 2025

This review examines natural pests, competitors of the Heracleum sosnowsky. Special attention is paid to the role of mutualism in the invasiveness of hogweed. the parsnip yellow spot virus, larvae of the weevil (Lixus iridis (Olivier, 1807)), agromyzid flies (Phytomyza pastinacae (Hendel, 1923)), umbrella moth (Epermenia chaerophyllella (Goeze, 1783)), scoops (Dasypolia temple (Thunberg, 1792)), depressariids (Depressaria radiella (Goeze, 1783)), celery fly (Euleia heraclei (Linnaeus, 1758)), lamellate beetles (Oxythyrea funesta (Poda, 1761)), caterpillars of the Kamchatka Swallowtail (Papilio machaon (Linnaeus, 1758)) significantly damaged Heracleum sosnowsky. Thrips vulgatissimus (Haliday, 1836) feeds on the sap, while Lixus iridis eat leaves and stems of the above mentioned hogweed. Phoma complanate (Tode) (=Calophoma complanate) is a phytopathogenic fungi that damage Heracleum sosnowsky. Powdery mildew, ascochitosis and cylindrosporosis are most common fungal diseases of the giant hogweed. Shellfish farming and livestock grazing curb the spread of hogweed. Due to the lack of competition in the environment, the importance of its artificial creation is discussed. The fast-growing perennial grasses create dense turf that prevents germinating of hogweed seeds. Poa pratensis L., Alopecurus pratensis L., Bromus inermis Leyss., Festuca rubra L., Phlum pratense L., Lolium perenne L., Helianthus tuberosus L., and Galega orientalis Lam. are among them. Replacement crops, such as Picea abies (L.) Karst. and Pinus sylvestris L., can compete in vacant lots and abandoned lands. The success of the hogweed populations introduction depends on the presence of pollinators, the spread of its seeds by animals and humans; symbiosis with fungi and bacteria. The possibility of limiting the spread of hogweed through the absence of species that improve its adaptability is discussed. It was concluded that biological control agents are promising to use and additional studies is needed to reduce the number of Heracleum sosnowsky and eliminate negative consequences for the environment.
Chemical composition and sorption activity of sapropels: a review
Authors:   Institute of Biology of Komi Scientific Centre of the Ural Branch of the Russian Academy of Sciences, Sazanova M. L. , Sazanov А. V. ,   Vyatka State University, Zhuikova I. A. ,   Vyatka State University, Tugarinov L. V. ,   GlavAgroSnab Ltd
Published: January 2025

Recently the removing from the environment or reducing the toxicity of pollutants in accordance with the principles of “green chemistry” is acute. “Green utilization” of toxicants by means of sorbents implies the use of renewable natural sorbents with low cost and high efficiency, as well as the possibility of raw materials reuse. Freshwater sapropels meet these principles quite well. The sapropels include organic and inorganic substances, the predominance of the mineral part determines the sapropel type. The composition of the mineral part depends on the geographical location, geochemical composition of the reservoir sediments, chemical composition of water entering the lake bed and other factors. The N, P, K, Ca and silt fraction total content determines the agrochemical efficiency of sapropels; calcareous sapropels are characterized by the highest concentration of macroelements, and organic-silica sapropels – by the highest concentration of trace elements. Sapropels with P and K low content can be used for production of humic preparations, ameliorants and preparations for detoxification, remediation and recultivation of degraded and polluted soils. The organic component of sapropels includes lipids, simple and esters, carboxylic acids, sterols, alcohols, ketones, pigments, hydrocarbons, porphyrins, vitamins, enzymes, etc., which is actively used in balneotherapy. The presence of a large number of nitrogen- and oxygen-containing functional groups on the surface of humic substances in sapropel is responsible for high sorption capacity. The sorbents synthesized using sapropel are effective in wastewater/water surface treatment from oil and oil products, phenol and other organic pollutants, heavy metals, fluorides, dyes. The wide distribution of sapropels within the temperate zone water bodies, low cost, simple enough technology of extraction and application, along with high sorption properties make it promising to use this natural raw material as sorbents / for the production of sorbents for purification of water bodies, wastewater and soils from heavy metals and petroleum hydrocarbons, remediation of soils contaminated with petroleum products and radionuclides.
Study of the possibility of regenerative recycling of waste copper plating electrolytes
Authors:   Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences, Shumilova M. A. , Chausov F. F. ,   Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences, Zhirov D. K. ,   Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences, Kazantseva I. S. ,   Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences, Pastukhova N. N. ,   Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences, Averkiev I. K. ,   Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences
Published: January 2025

The possibility of regenerative recycling of waste copper plating solution was studied. The process was based on the reagent method using 10% solutions of sodium hydroxide and sodium carbonate as precipitants. The required amount of precipitant was determined by potentiometric titration. We found that the molar ratio between the precipitant and copper ions is 2.2 to 1. The optimal pH value for solutions during precipitation with alkali was 11, and for soda solution – 10. The degree of metal ions extraction from the waste copper plating electrolyte in these conditions exceeds 99%. By methods of IR spectroscopy and simultaneous thermal analysis, it was established that the interaction of copper ions with alkali produces copper(II) hydroxide, and with sodium carbonate – copper(II) dihydroxydicarbonate (an analog of the natural material azurite). A simulation of the technological scheme for the regenerative recycling of waste copper plating solutions with the obtaining of new working electrolytes was carried out. Copper coatings applied to steel products using the resulting alkali working solutions satisfy the production requirements. Based on the experimental data obtained the disposal of 1 m3 of waste copper plating solutions required about 62 kg of sodium hydroxide or 26 kg of sodium carbonate. Economic calculations have shown that the cost of copper sulfate returned to production is almost 2 times higher than the cost of alkali and acid and 2.1 times higher than the cost of sodium carbonate and sulfuric acid. Taking into account the quality of the applied copper coating the most appropriate option is the regenerative recycling of waste copper plating solutions using alkali.
On the possibility of using the empirical distribution function to quantify the probability of exceeding the water color standards
Authors:   Ufa State Petroleum Technological University, Yalaletdinova A. V. , Malkova M. A. ,   Ufa State Petroleum Technological University, Enikeеva L. V. ,   Ufa State Petroleum Technological University, Kantor E. A. ,   Ufa State Petroleum Technological University
Published: January 2025

We found that the nature of the distribution of water color values within a year depends on seasonality. Therefore, to take into account the above, further analysis of the distribution of the indicator was carried out for each month. The analysis of water color distributions for January, May, July and October is given as an example. Variation series were plotted and empirical water color distribution functions were calculated for each month. It is revealed that the laws of water color distribution do not correspond to normal and log-normal distributions, but are approximated quite accurately by polynomials (theoretical distribution function). For the obtained polynomials, the domains of definition of the values of the argument x, at which they have all the properties of the distribution function (continuously increase on the interval [0; 1]) are revealed. The hypotheses about the laws of water color distribution tested using Kolmogorov–Smirnov test were confirmed. The methodology used and the resulting water color distribution functions made it possible to calculate the probabilities of an indicator exceeding the specified values, for example, exceeding the standard (20 degrees) for all months. Thus, in January, the probability of not exceeding the standard will is 0.792, in July – 0.562, in October – 0.809, while in May the probability of not exceeding the water color standard is 0.091. Knowledge of the law of water color distribution, taking into account the seasonal characteristics of the studied process, allows to assess the risks of exceeding normative values by the indicator and to use it for making decisions on ensuring normative water quality in terms of color.
Ensuring quality and safety for the process of drinking water treatment: case-study of the Ganges River
Authors:   D. Mendeleev University of Chemical Technology of Russia, Kurbatov A. Yu. , Murzina E. D. ,   D. Mendeleev University of Chemical Technology of Russia, Vetrova M. A. ,   D. Mendeleev University of Chemical Technology of Russia, Ivantsova N. A. ,   D. Mendeleev University of Chemical Technology of Russia
Published: January 2025

Drinking water quality is an acute problem all over the world. Unauthorized discharges of contaminated wastewater into life-sustaining water sources make the latter undrinkable. The Ganges River is the main artery of India’s economic and domestic use with the numerous industries located on its banks. This paper is devoted to studying the possibility of improving the quality of drinking water in the Ganges River, India. The studied water is already chemically and microbiologically contaminated at the entrance to the city. The hydrodynamic method of water treatment using ozone in small doses is proposed to minimize the chemical load on the Ganges River. The study confirmed the high efficiency of combined hydrodynamic water treatment and the ozonation process. It is established that the application of cavitation hydrodynamic device for water treatment allows reducing ozone consumption on average by 20–25%, which affects the positive economic effect and the final cost of purified water. Hydrodynamic purification of the Ganges River water with the addition of ozone in small doses allows obtaining water of drinking quality without the introduction of other chemical reagents. The latter makes this method environmentally friendly and does not result in secondary environmental pollution. The low cost of the purification process occurs due to the efficient mixing of ozone with the water being purified using a hydrodynamic cavitation device. By increasing the contact area of the phases and additionally arising cavitation effects, the water purification process is intensified. Application of the combined method of hydrodynamic treatment using ozone significantly reduces water color index, remove most of the suspended particles from the system, oxidize iron and nickel, and reduce the surfactant, petroleum products, and ammonia nitrogen concentrations; with twice the number of cleaning cycles – completely eliminate bacteria. Ceramic membrane filters remove insoluble compounds obtained during cavitation hydrodynamic treatment with ozone. The work also presents the results of studying the chemical and biological initial composition of water and water after using this technology with calculation of the effectiveness of the method and cost characteristics.
Content of biologically active substances in aqueous extracts of bark-wood waste degradation products
Authors:   Institute of Biology of the Komi Science Centre of the Ural Branch of the Russian Academy of Sciences, Shirshova T. I. , Ufimtsev K. G. ,   Institute of Biology of the Komi Science Centre of the Ural Branch of the Russian Academy of Sciences, Beshley I. V. ,   Institute of Biology of the Komi Science Centre of the Ural Branch of the Russian Academy of Sciences, Dontsov А. G. ,   Institute of Biology of the Komi Science Centre of the Ural Branch of the Russian Academy of Sciences
Published: January 2025

The chemical composition of the destruction products of bark-wood waste (BWW) from the dump of JSC “Syktyvkar Timber Processing Company” was studied. The content of water-soluble fractions in samples from two wells ranged from 0.1 to 1.1% of the dry matter mass and depended on the depth of occurrence. These differences may be related to different time of occurrence, heterogeneity of waste, degree of decomposition and moisture content. Sequential treatment of the dry water-soluble residue with solvents of increasing polarity yielded hexane, ether and chloroform extracts. The content of dihydroquercetin (tR=28.6 min), vanillic acid (tR=11.6 min) and trans-p-coumaric acid (tR=17.7 min) were confirmed by TLC and HPLC methods. The above substances were previously detected in ethyl acetate and hexane extracts. Arabinose, mannose, glucose and galactose were detected when analyzing BWW samples for polysaccharide and rabinogalactan content in the hydrolysis products of water-soluble hemicellulose by HPLC. This allows us to characterize the isolated fraction as a mixture of water-soluble hemicelluloses – arabinogalactan and glucomannan. The same components – dihydroquercetin, vanillic and trans-p-coumaric acids – were found in all studied BWW samples regardless of the depth of occurrence and the use of water or organic solvents of different polarity for extraction. The detection of such strong antioxidants as dihydroquercetin, phenolic acids and arabinogalactan in BWW samples opens prospects for the development of substances based on them for medicine, animal husbandry and other sectors of national economy.
Rational use of land resources in the placement of municipal solid waste disposal facilities
Authors:   Samara State Technical University, Gubar E. V. , Samarina O. A. ,   Samara State Technical University, Tupicina O. V. ,   Samara State Technical University
Published: January 2025

Within the framework of this article the criteria for assessment of economic, technological and environmental solutions for realization of waste management measures in respect of the objects, which are at the investment stage of their life cycle, are developed. The scientific and methodological foundations for substantiating the composition of structures in the design of municipal solid waste disposal facilities have been developed. The efficiency assessment of technological solutions of solid waste disposal facilities under the restriction of land plot area is presented. A comparative analysis of technical, economic and environmental characteristics of construction of the most common type of landfills (waste disposal area of 3 ha, annual capacity up to 30 thousand tons) for different structural schemes of organization – without breakdown into operation maps and with breakdown into operation maps with their turn-by-turn construction. The assessment of two constructive schemes of organization of waste disposal sites was based on the factors of environmental impact and cost characteristics of landfill construction. The obtained indicators allowed not only to justify the feasibility and assess the economic efficiency of investments for each construction scheme, but also to identify the redundancy of technological solutions, the use of which led to a significant increase in financial and time costs. Thus, the issue of dividing capital costs into years of commissioning of individual maps of landfills with reduction of one-time costs in the first year of object realization is economically feasible. However, forecast changes in price levels on the date of implementation of each map of the facility, increase in the unit cost of disposal of 1 m3 of waste and reduction in the mass of waste buried on 1 hectare, cast doubt on the economic benefit of a one-time reduction in capital costs.
Food waste and its valorization into value-added products (case-study of the international experience of Asian countries)
Authors:   Vyatka State University, Baykova O. V. , Pugach V. N. ,   Vyatka State University, Kazakov A. V. ,   Vyatka State University
Published: January 2025

With the changing lifestyle and rapid urbanization of the world’s population, the amount of food waste from various industrial, agricultural and household sources is increasing. Food waste is rich in organic substances, so traditional approaches to its disposal in municipal solid waste landfills and incineration can lead to serious consequences for the environment and human health. The use of biological methods for the treatment of such waste offers a sustainable way to valorize them. Being rich in nutrients, food waste can serve as a substrate for the growth of microorganisms and the subsequent production of various value-added products. The article provides an overview of international research in the agricultural sector of India and China on the valorization of fermentation-based waste for the production of various value-added bioproducts. It should be noted that these countries were not chosen by chance, they are the leading countries in Southeast Asia in the field of recycling organic compounds with benefits for the economy and the environment. To achieve this goal, we have used a review and analytical method, which makes it possible to visually illustrate how, based on the use of valorization, food waste can be advantageously used as raw materials or resources for the production of new products, including biofuels, electricity, biosurfactants, etc.
As part of the ongoing work, data on case studies of the agricultural sector in India and China on successful repurposing of food waste for the production of new products is being further summarized.
Editorial
Authors: Abram Sandi , Ušić Eric
Published: January 2025

“Street art represents the voice of the periphery” —  Alexandra Henry at Ljubljana Street Art Festival, 2022
The notion of the periphery usually serves as a starting point for critically examining and problematizing the contemporary dynamics of capitalism, ranging from global inequality to extractivism. This concept, however, may be also extended beyond the field of political-economic analysis (Wallerstein 2004) to embrace other socio-cultural dimensions. As Bazzini and Puttilli (2008, p. 23) argue, the transformation of cities in postmodernity has led to the disintegration of the relationship between center and periphery, giving rise to multiple centers and multiple peripheries. Thus, these multiplying centers and peripheries are not only mere political, geographic, urbanistic tipologies—and we could add topologies—but encompass also fluid cultural and symbolic flows (ibid.; see Appadurai, 1996), making them dialogic and relational. If we are to understand peripheries relationally (cf. Massey, 1994), then at the level of the production of social space, we must highlight their dialogic, communicative, transversive power/capabilities, and the inscribed meanings that are transmitted across and through these multiple peripheries, multiple centers. One such vehicle is the artistic, artivistic and political practices within urban space encapsulated in the often contested notion of ‘street art’ and, by extension, ‘graffiti’.
Editorial
Authors: Sierra Javier
Published: January 2025

Historically, the relationship between cinema and the city has served as a mirror to reflect and shape the understanding of urban spaces and their evolution. The city not only acts as a backdrop for cinematic narratives but often becomes a central character, rich in meaning and symbolism. This call for papers seeks to delve into how cinema, as an artistic and cultural medium, represents, interprets, and transforms the vision of cities and their communities.
Cinema has the power to influence our perception of the urban environment, highlighting aspects of urban life ranging from architecture and urban design to social and cultural phenomena. Through its lens, we can explore themes such as gentrification, urban identity, collective memory, and the interaction between the individual and public space. The cinematic representation of the city not only reflects existing realities but can also anticipate future urban and social transformations.
We are looking for papers that explore the synergy between cinema and the city from multiple angles and disciplines. We are interested in analyses that address how cinema uses the city as a canvas for storytelling, how it captures and contributes to urban aesthetics, and how it can be a tool for social commentary and critique. Articles may examine both historical and contemporary representations of the city in cinema, as well as futuristic and speculative projections.
This call is open to approaches ranging from specific case studies to theoretical and comparative analyses. We encourage researchers, academics, filmmakers, and professionals from related fields to submit papers that not only deepen the understanding of cinema and the city but also explore the possible interactions between these two vital elements of human expression and experience.