bluuebunny/crossref_metadata_2025 huggingface dataset:
Colectiva Portal de igualdad: Proyectos expositivos y activismo artístico. Dialogando con Amparo Zacarés Pamblanco
Authors: Hurtado-Soler Amparo
Published: January 2024

Detrás del activismo artístico por la igualdad suele darse la historia del encuentro de varias personas motivadas en hacer realidad el artículo 26 de la LO 3/2007 para la Igualdad efectiva de Mujeres y Hombres, dedicado al ámbito de la creación y producción artística e intelectual . En diciembre de 2020, un grupo  transdisciplinar y transnacional de mujeres y hombres del mundo de las artes visuales y de la cultura, se constituyeron en Colectiva Portal de Igualdad. Previamente, su formación remite al  proyecto de arte público transmedia #PortaldeIgualdad que realizó la artista y comisaria Mau Monleón-Pradas (València, 1965) quien, el 7 de septiembre de 2020, inició su campaña de arte público transmedia #PortaldeIgualdad producida por el Programa de Actividades del Instituto Valenciano dentro del IVAMProdueix. Desde su constitución se reúnen regularmente para preparar las acciones futuras y mantener vivas sus reivindicaciones. En la actualidad este grupo de activistas ha cumplido ya sus tres años de acciones y ha alcanzado reconocimiento en el ámbito nacional e internacional. En este artículo se da cuenta de los proyectos expositivos que han realizado hasta el momento.
“Vem, vamos embora que esperar não é saber”: As reformas educacionais do governo militar brasileiro (1964-1985)
Authors: Araújo da Silva Andrea Kelly , De Almeida Cibele Lucena , Melo Elda Silva do Nascimento , Stamatto Maria Ines Sucupira , Rodrigues de Oliveira Sheyla Charlyse
Published: January 2024

O presente artigo objetiva refletir sobre a educação brasileira relativa ao período do Governo Militar de 1964 a 1985. Assim, apresenta uma análise histórica e sociológica da época em que o Brasil foi governado por presidentes militares e a repercussão desse regime para a educação básica (ensinos primário, secundário e profissionalizante) e a educação superior brasileira. Para a concretização do estudo, realizou-se uma pesquisa bibliográfica de natureza qualitativa, utilizando-se como procedimentos para a construção de dados, a análise documental e o registro em diário de pesquisa. Tomou-se como referencial teórico as discussões de Beltrán e Hernàndez (2012), Germano (1993) e Saviani (2008). Os resultados da investigação indicam que a ênfase esteve nas reformas do ensino superior e da educação primária, principalmente no que se refere à desqualificação da escola pública, ao favorecimento do setor privado, ao ensino profissionalizante, ao rompimento com a educação regional e popular (exílio de Paulo Freire), à inspiração nos princípios da produtividade, dentre outros. Desse modo, a vinculação da educação pública aos interesses e necessidades do mercado; o favorecimento da privatização do ensino; a implantação de uma estrutura organizacional que se consolidou e se encontra em plena vigência e a institucionalização da pós-graduação são aspectos de destaque na educação no período da ditadura e permitem uma noção a respeito do que foi feito à época do governo militar e a forma como isso reverberou hodiernamente. Possibilita, assim, a compreensão de muitas questões que foram e ainda são enfrentadas pela educação contemporânea no Brasil e no mundo.
Nuevas perspectivas para la transformación educativa hacia la sostenibilidad y la internacionalización
Authors: Isusi-Fagoaga Rosa , Qiu Yinglong
Published: January 2024

Se trata de la presentación del número 7 (2023) de la revista
Posmemoria y retrato. El papel de la fotografía infantil en la reconstrucción identitaria de la poesía española de posguerra: Antonio Martínez Sarrión, María Victoria Atencia y Guadalupe Grande
Authors: Emma Llorente María
Published: January 2024

El presente artículo se centra en el análisis de composiciones poéticas de posguerra —Antonio Martínez Sarrión, María Victoria Atencia y Guadalupe Grande— que utilizan fotografías infantiles como punto de partida de la reconstrucción de la historia familiar y la identidad individual. Para ello, se adopta el concepto de posmemoria acuñado por Marianne Hirsh (1992), del que se destacan tres aspectos fundamentales: la idea de la ruptura familiar y la repercusión del trauma en los hijos de las víctimas; la contemplación de las fotografías como desplazamiento espacial y temporal; y la identificación no solo intergeneracional (vertical), sino también intrageneracional (horizontal), que da lugar a una memoria proyectiva o afiliativa.
María Luisa Carnelli, los poemas de guerra y la utopía de la vanguardia
Authors: Martínez Martínez Laura María
Published: January 2024

Este artículo aborda la poesía de la guerra civil española de María Luisa Carnelli (1898-1987), la escritora argentina que fue corresponsal de La Nueva España y se involucró en las actividades del Socorro Rojo Internacional. Las siguientes páginas plantean la escritura de guerra de Carnelli como el abandono definitivo de la vanguardia política y la analizan desde las temáticas claves de la poesía hispanoamericana de la guerra civil. Además, mediante la clasificación de su obra en tres tipos –los poemas topográficos, la heroicidad extendida y los poemas en busca de la solidaridad– se estudian las estrategias de legitimación de la voz poética.
Sobre lo trémulo de la memoria desnuda, todo se está repitiendo: la experiencia disidente de la guerra y la posguerra en las colecciones Colliure, El Bardo y Ocnos
Authors: Dinu Alexandra Camelia
Published: January 2024

Este texto defiende que la poesía de la generación de medio siglo se articula sobre la necesidad y el imperativo de restitución de la memoria personal, bien íntima, bien pública como frente de resistencia a los discursos oficiales franquistas. Por consiguiente, se centra en las estrechas vinculaciones entre ética y estética en la producción lírica de una gran parte de los poetas recogidos y reivindicados en las colecciones barcelonesas Colliure (1961-1966), El Bardo (1964-1974) y Ocnos (1968-1983). Se detiene en el significado del realismo social de los cincuenta y crítico de los sesenta y los presenta como modos y tendencias poéticas al servicio de la recuperación de las historias calladas y olvidadas de la guerra y la posguerra. Asimismo, también muestra, a partir del análisis temático y crítico, cómo estas particulares experiencias desembocan en una concepción lírica más amplia denominada poesía del conocimiento. De esta forma, se explica la relevancia de tres de las colecciones de poesía más importantes del tardofranquismo como proyectos de una cultura de la memoria antifranquista que construyó los cimientos de la cultura democrática durante un cuarto de siglo de la dictadura.
“Hermanos de América…”. Ángel Ossorio y Gallardo, católico y monárquico al servicio de la República
Authors: González Ruiz Carlos
Published: January 2024

Ángel Ossorio y Gallardo, político y abogado conservador, monárquico y católico, fue una de las personalidades clave de la diplomacia y propaganda republicana durante la guerra civil española. Su catolicismo demócrata le hizo ser fiel al gobierno cuando estalló el conflicto y embarcarse en la guerra propagandística en torno a la cuestión católica, avivada por la persecución de religiosos y la “cruzada” religiosa anunciada por las jerarquías eclesiásticas. Esta batalla mediática se trasladó a Hispanoamérica, donde los intelectuales prorrepublicanos argentinos y costarricenses reivindicaron su figura para pregonar una imagen de la República respetuosa con la religión y el derecho internacional.
La Guerra Civil española en la prensa italiana: los ejemplos de Il Messaggero d’Algeri e Il Nuovo Avanti
Authors: Castaño Santos Soledad
Published: January 2024

El presente artículo analiza la visión internacional de la Guerra Civil en Italia a partir de dos medios de comunicación de ideología confrontada: Il Messaggero d’Algeri e Il Nuovo Avanti. En una primera parte, se contextualiza la situación sociopolítica del país y las vinculaciones de este con España. Asimismo, se sintetiza la funcionalidad de la propaganda a través de los medios en este tipo de acontecimientos históricos. Le prosigue un estudio de los mecanismos propagandísticos en dos niveles: el histórico, que muestra las variaciones en la postura y las estrategias según avance la Guerra, y el léxico, que permite ahondar en las connotaciones semánticas que determinadas palabras adquieren en los discursos periodísticos.
Aproximación al estudio de las redes teatrales en Bizkaia (1939-1975): notas sobre espacios, modos de difusión, grupos y autores
Authors: Ruiz Cano Marina
Published: January 2024

El presente artículo pretende arrojar luz sobre los modelos de creación y difusión teatral en Bizkaia entre 1939 y 1975. Para ello, hemos querido catalogar los diferentes actores de la historiografía teatral: las compañías, los autores y las salas teatrales. Hemos prestado atención a cuestiones relativas a la política cultural del momento, en particular a la labor realizada por las editoriales y las radios a la hora de difundir las obras dramáticas.
Periodismo musical, contracultura y modo de vida rock en la escritura de Lester Bangs
Authors: Fernández Serrato Juan Carlos
Published: January 2024

El presente ensayo ofrece una introducción a la obra escrita del crítico de rock norteamericano Lester Bangs y un análisis en profundidad de una de las piezas que publicó en revistas musicales, “James Taylor Marked for Death”. A partir del estudio de este texto se formulan los principios ideológicos, estructurales, discursivos y estilísticos que dieron lugar a un nuevo género de expresión creativa, que supera los géneros periodísticos e hibrida los discursos culturales y estéticos en lo que solo puede denominarse como “escritura rock”.
Humanidadades decoloniales y Weltliteratur. De Emerson a Steven Spielberg
Authors: Link Daniel Alejandro
Published: January 2024

Desde 1837 hasta bien entrado el siglo XX, pasando por el gran estallido poético-político del modernismo, el continente americano propuso proyectos de independencia intelectual, decolonización del pensamiento y políticas de integración regional y lingüística (la Gramática de Andrés Bello, por ejemplo). La literatura y las artes jugaron un papel estratégico en el diseño de una estrategia para alcanzar la soberanía cultural o, por el contrario, para subsumirla en nuevas formas de imperialismo (Carmen Miranda como herramienta del proyecto panamericanista propuesto por los Estados Unidos, por ejemplo). Se examinarán en particular las tensiones entre modelos de integración muchas veces irreconciliables en la obra de Rubén Darío.
Salvador Elizondo: una filología de la imagen
Authors: Cherri Leo
Published: January 2024

El mismo año que Salvador Elizondo estrena su película Apocalypse 1900, que permanecerá archivada en latas hasta el 2007, también publica Farabeuf o la crónica de un instante. Esta sobrevivencia y recuperación del archivo fílmico, ilumina el texto literario y nos permite ver lo que siempre estuvo allí: Farabeuf no es sólo un libro intermedial –que incorpora y reflexiona sobre las imágenes– o un libro experimental que lleva hasta las últimas consecuencias la estética batailleana, sino, sobre todo, una intervención en los archivo de la modernidad, una escritura-montaje que interviene en y a partir de ciertos archivos que definen la modernidad. Este trabajo se propone analizar la novela y el film de Elizondo a partir de estas postulaciones, intentando pensar el lugar de su intervención en la literatura latinoamericana y las artes del siglo XX desde una perspectiva posfilológica y anarchivística.
Prácticas para pensar una biopolítica de la vida en Colombia
Authors: Pérez González Bibiana
Published: January 2024

El presente artículo busca demostrar que frente al panorama biopolítico contemporáneo, en el cual el poder produce y gestiona la muerte a gran escala a través de sus tecnologías de gobierno, el movimiento indígena y el movimiento afrocolombiano, a través de prácticas como la minga y los alabaos, son referentes de una biopolítica afirmativa y una contra-experiencia al neoliberalismo. Las formas en que estos movimientos han comprendido el trabajo en comunidad, la elaboración del duelo como un asunto colectivo y la transformación de la violencia epistémica que históricamente ha invisibilizado sus pueblos, son prácticas que lejos de avasallar el potencial innovador de la vida, la protege y la expande.
Paulino Viota, Jean-Luc Godard. 60 años insumiso
Authors: Zumalde Imanol
Published: January 2024

Paulino Viota, Jean-Luc Godard. 60 años insumiso. Athenaica: Serie Gong, 2022, 430 pp.
Jenaro Talens, Con los cinco sentidos. Mono(dia)logar, mirar, leer, escuchar, pensar
Authors: Sánchez-Mesa Martínez Domingo
Published: January 2024

Jenaro Talens, Con los cinco sentidos. Mono(dia)logar, mirar, leer, escuchar, pensar. Madrid: Cátedra, 2023, 328 pp.
Producir, ordenar, clasificar Archivos, disidencias sexuales y prácticas coloniales de gobierno
Authors: Molina Fernanda Vanina
Published: January 2024

A partir del análisis de una serie de procesos judiciales seguidos contra sexualidades no normativas en diferentes jurisdicciones coloniales americanas durante los siglos XVI y XVII, este artículo reconstruye y analiza los mecanismos administrativos y de gobierno, a través de los cuales la vida de quienes debieron comparecer antes los estrados fue protocolizada hasta convertirse en “material de archivo”. Asimismo, se propone reflexionar en torno a las dificultades que el archivo colonial presenta para la investigación histórica, en la medida en que no sólo produjo y enunció esas experiencias a partir de nociones como las de delito o crimen, sino que constituyó una práctica colonial de gobierno.
Luchas LGBTIQ+, sociedad de consumo e interseccionalidad: el día del orgullo LGBT en la revista Shangay
Authors: Zaballa Totorika Ane
Published: January 2024

En el presente trabajo se analiza la representación de la comunidad LGTBIQ+, desde el enfoque de los estudios interseccionales, con el objetivo de identificar las técnicas o estrategias publicitarias en relación al público LGBTIQ+ en el contexto de la sociedad de consumo. Para ello, el caso de estudio se centra en el análisis de la representación de la comunidad LGBTIQ+ en imágenes de los números «Especial Orgullo» de la revista Shangay entre 2017 y 2022. Así, esta investigación se enfoca en la contabilización de estas identidades y en las formas en las que cada una de ellas se presentan, con lo cual se identifican los intereses que yacen en términos publicitarios y mercantiles, y su contribución (o falta de ella) a la visibilización del colectivo de una forma diversa e inclusiva.
El teatro como archivo: los rusos en el Colón de la primera mitad del siglo XX
Authors: Piccolo Laura
Published: January 2024

El ensayo se focaliza en la presencia de la danza rusa en el Teatro Colón de Buenos Aires en la primera mitad del siglo XX y en el rol que la Biblioteca del Colón ha asumido en los últimos años como archivo. Muchas instituciones de conservación y transmisión del patrimonio cultural (teatros, museos, bibliotecas, etc.) han consolidado su dimensión memorial en el tiempo, activando ciertas potencialidades del archivo, entre ellas la de ser a la vez contenido y contenedor de documentos materiales e inmateriales. En lo que respecta a la danza rusa, la historia del Colón y los materiales conservados en su biblioteca muestran cómo las giras de los Ballets Rusos en 1913 y 1917 iniciaron un fructuoso proceso cultural que marcó el destino del arte coreográfico y musical ruso en las temporadas posteriores del teatro, condicionando la propia recepción de la danza rusa en Argentina y otros países latinoamericanos.
Santos Zunzunegui, Derivas. Mis Historias de Cine III
Authors: Gastaka-Eguskiza Ignazio
Published: January 2024

Reseña
Jesús A. Martínez, Vietnamitas contra Franco. Letras perseguidas y espacios secretos
Authors: Silvera Francisco
Published: January 2024

Reseña
Análisis de colocaciones producidas por aprendices de ELE a partir de un corpus
Authors: Rodríguez Farah María Fernanda , Lozano Bachioqui Eleonora , Reyes Pérez Antonio
Published: January 2024

Este estudio presenta un análisis sobre el aprendizaje y uso comunicativo de colocaciones de aprendices de español como lengua extranjera (ELE). Para efectuar este análisis, se diseñó un instrumento que se conforma de un cuestionario y un corpus denominado Corpus de Aprendices de Colocaciones ELE (CACE), cuyo objetivo es identificar la producción de colocaciones, errores comunes y patrones de uso que muestren evidencia de la verbalización de estos fenómenos. Así, se presenta una fundamentación teórica sobre lingüística de corpus y las colocaciones, así como una clasificación de la taxonomía de colocaciones en materia de ELE. También se describe el proceso que se llevó a cabo para la obtención de datos y la recopilación del corpus, así como la manera en la que se procesaron los datos. Por último, se presenta un análisis y discusión de los datos obtenidos, así como conclusiones sobre lo observado y algunas limitaciones del estudio.
Interculturalidad en la didáctica del español: una experiencia con docentes noruegos
Authors: España Palop Eduardo , Hernández Gassó Héctor
Published: January 2024

En este artículo se presenta una experiencia de inmersión lingüística y cultural para un grupo de docentes noruegos de ELE durante un curso de posgrado centrado en la didáctica del español como lengua extranjera. La  finalidad de estas actividades fue doble: por un lado, profundizar en aspectos culturales más allá de los estereotipos; y, por otro lado, actualizar las ideas y conocimientos sobre la cultura española. Las experiencias fueron de diversa índole: desde salidas en las que se potenció el conocimiento sobre las tradiciones socioeconómicas de España hasta interacciones de actualización de ideologías y costumbres de la juventud española.Los resultados del curso mostraron que este tipo de actividades fueron valoradas muy positivamente por las alumnas. Se cumplió el objetivo de trascender lo meramente turístico y anecdótico para proporcionar a las estudiantes unos entornos que renovaron y ampliaron  su interés por la cultura española.
Interrumpir o no interrumpir: claves para una competencia interactiva
Authors: Llibrer Adrià Pardo
Published: January 2024

En este ensayo, se proponen las primeras bases para una competencia interactiva, que vaya más allá de las habilidades gramaticales y léxicas del marco común de referencia europeo. Nos interesamos por los fenómenos transversales desatendidos en la comunicación, de entre los cuales destacamos lo que comúnmente se denomina interrupción. Lejos de ser un hecho atribuible al habla disruptiva, argumentamos que la interrupción desempeña funciones clave en la formulación discursiva y la cortesía comunicativa. La comprensión y el dominio de este fenómeno son esenciales para participar eficazmente en conversaciones informales. Por ello, partiendo del análisis conversacional y el modelo de segmentación discursiva del grupo Val.Es.Co., esbozamos algunas técnicas con las que podría enseñarse esta competencia en el aula, desde un enfoque práctico basado en la comprensión de la interrupción en los contextos de inmediatez comunicativa.
América Latina y el financiamiento externo: el orden monetario internacional cambiante
Authors: Marshall Wesley C. , Rochon Louis-Philippe
Published: January 2024

En este artículo examinamos el cambiante orden monetario internacional y las posibles implicaciones que tendrá para América Latina. En el ámbito teórico, prestamos especial atención a las posibilidades de superar la restricción externa que ha definido las economías de la región, así como a una perspectiva polanyiana del orden internacional. En el ámbito práctico, enfatizamos los roles potenciales del Banco de Sur y del banco BRICS.
Trend Epidemiologi Kematian Jemaah Haji Indoenesia Tahun 2017-2023
Authors: Febriyanti Nooridha , Adisasmita Asri C
Published: January 2024

Ibadah haji adalah ibadah wajib bagi umat islam yang mampu secara finansial, mental dan fisik. Dalam pelaksanaan ibadah haji, terjadi kumpulan massa yang sangat masif sehingga berpotensi menimbulkan kematian pada jemaah haji akibat beberapa faktor, diantaranya faktor kesehatan, kepadatan, dan cuaca panas. Angka kematian jemaah haji Indonesia masih dinilai tinggi yaitu mencapai 200 kematian diantara 100.000 jemaah haji yang berangkat. Penelitian ini bertujuan untuk menggambarkan kematian jemaah haji Indonesia berdasarkan variabel orang, waktu dan tempat. Studi ini dilakukan dengan desain case series yang dianalisis secara deskriptif menggunakan data sekunder pelayanan kesehatan haji melalui Sistem Komputerisasi Haji Terpadu Bidang Kesehatan (Siskohatkes) pada tahun 2017-2023. Berdasarkan hasil penelitian ini, didapatkan bahwa dalam lima kali pelaksanaan ibadah haji terakhir, angka kematian tertinggi terjadi pada tahun 2023 sebesar 338 kematian per 100.000 jemaah haji dan terendah pada tahun 2022 sebesar 90 kematian per 100.000 jemaah haji. Kematian jemaah haji lebih banyak terjadi pada jemaah haji berjenis kelamin laki-laki dan kelompok umur ≥60 tahun. Mayoritas jemaah haji yang wafat memiliki status kesehatan dalam kategori status risiko tinggi (risti) dan penyebab kematian tertinggi adalah penyakit kardiovaskular. Kematian banyak terjadi saat periode waktu pasca Arafah, Muzdalifah, dan Mina (Armuzna), sedangkan tempat wafat jemaah haji lebih banyak di Rumah Sakit Arab Saudi. Upaya untuk menurunkan jumlah kematian jemaah haji dapat dilakukan dengan pemeriksaan kesehatan sejak dini terhadap kelompok berisiko dan terus berusaha memantau kesehatan jemaah agar terkontrol saat pelaksanaan ibadah haji.
Pseudo-Landau levels of hexagonal lattice quantum antiferromagnets under bending strain
Authors: Xie Xiao-Jie , Sun Jun-Song , Qin Ji-Hong , Guo Huai-Ming ,   Department of Physics, University of Science and Technology Beijing, Beijing 100083, China,   Institute of Theoretical Physics, University of Science and Technology Beijing, Beijing 100083, China,   Department of Physics, Beihang University, Beijing 100191, China
Published: January 2024

The pseudo-Landau energy levels of a hexagonal lattice quantum antiferromagnet under bending strain are studied by linear spin-wave theory (LSWT) and quantum Monte Carlo method (QMC). Using the linear spin wave theory, the magnetic pseudo-Landau energy level can be found to appear at the high-energy end of the magnon spectrum, and the energy level spacing is proportional to the square root of the energy level index. The linear spin wave theory and the quantum Monte Carlo method both indicate that at the same size, the local magnetization gradually weakens with the gradual increase of the strain strength. Additionally, the antiferromagnetic order continuously weakens in the y-direction under the same strain strength. This occurs because the Heisenberg chain on the upper boundary becomes decoupled into an isolated vertical chain, leading to the destruction of the magnetic order near the upper boundary. The quantum Monte Carlo method provides a more accurate antiferromagnetic sequence evolution, that is, the vertical correlation at the upper boundary is unchanged and the horizontal correlation increases under a specific strain intensity. This affects the magnetization intensity, so that the local magnetization shows an upward trend at the upper boundary. The results contribute to the understanding of the effect of bending strain on spin excitations, and this effect may be observed in two-dimensional quantum magnetic material experiments.
Electroluminescence efficiency and stability of near ultraviolet organic light-emitting diodes based on BCPO luminous materials
Authors: Ren Xing , Yu Hong-Yu , Zhang Yong ,   Chongqing Key Laboratory of Micro & Nano Structure Optoelectronics, School of Physical Science and Technology, Southwest University, Chongqing 400715, China
Published: January 2024

To date, in the traditional method of obtaining near-ultraviolet (NUV) light, mercury atoms, which can create a highly toxic heavy metal contaminant, have been used. Therefore, it is an important issue to obtain NUV light by using new environmentally friendly devices. In the last decade, the fabrication of near ultraviolet organic light-emitting diodes (NUV-OLEDs) has become a research hotspot in the field of organic electronics. However, when the electroluminescence wavelength is extended to shorter than 400 nm, higher requirements are put forward for the materials used for each functional layer in these devices. In this work, a wide bandgap small molecule material of BCPO is used as the luminescent layer. The electron-transporting and hole-transporting materials are determined based on the overlaps between absorption spectra of these materials and emission spectrum of BCPO. And NUV-OLEDs with electroluminescent peak wavelength at 384 nm are prepared. By using the optimal device structure, the maximum external quantum efficiency of the device reaches 2.98%, and the maximum radiance of the device reaches 38.2 mW/cm2. In the electroluminescence spectrum, NUV light with wavelengths below 400 nm accounts for 57% of the light emission. In addition, the device demonstrates good stability when biased at two different constant voltage modes. The multiple key factors which affect the stability of the device are analyzed in detail. Firstly, it is found that the high glass transition temperature (Tg) of hole-transporting material is very important for the long-time stability of this device. The poor device stability is closely related to the low Tg temperature of hole-transporting material. Secondly, due to the widespread use of PEDOT:PSS as hole injection material in OLEDs, the electron leakage from the hole-transpor layer into the PEDOT:PSS layer may cause significant damage to the conducting polymer. When bombarded with low energy electrons, bond breakage occurs on the surface of PEDOT:PSS, followed by the release of oxygen and sulfur, resulting in changes in conductivity and oxidation reactions with molecules of hole transport material. Thirdly, the photoelectrical stability of organic molecules is the most fundamental reason that restricts the device lifetime. The aging process of material or device is directly relevant to the bond dissociation energy (BDE) of organic molecule. Generally, the BDE value of organic molecule is not high enough. As a result, molecules are prone to chemical bond breakage during electrochemical or photochemical aging. In summary, highly stable NUV-OLEDs should be fabricated by using hole-transporting materials with high Tg temperature, sufficient electron-blocking capacity, and large BDE value.
Exogenous applications of brassinosteroids promote secondary xylem differentiation in Eucalyptus grandis
Authors: Zhou Fangping , Hu Bing , Li Juan , Yan Huifang , Liu Qianyu , Zeng Bingshan , Fan Chunjie
Published: January 2024

Brassinosteroids (BRs) play many pivotal roles in plant growth and development, especially in cell elongation and vascular development. Although its biosynthetic and signal transduction pathway have been well characterized in model plants, their biological roles in Eucalyptus grandis, a major hardwood tree providing fiber and energy worldwide, remain unclear. Here, we treated E. grandis plantlets with 24-epibrassinolide (EBL), the most active BR and/or BR biosynthesis inhibitor brassinazole. We recorded the plant growth and analyzed the cell structure of the root and stem with histochemical methods; then, we performed a secondary growth, BR synthesis, and signaling-related gene expression analysis. The results showed that the BRs dramatically increased the shoot length and diameter, and the exogenous BR increased the xylem area of the stem and root. In this process, EgrBRI1, EgrBZR1, and EgrBZR2 expression were induced by the BR treatment, and the expressions of HD-ZIPIII and cellulose synthase genes were also altered. To further verify the effect of BRs in secondary xylem development in Eucalyptus, we used six-month-old plants as the material and directly applied EBL to the xylem and cambium of the vertical stems. The xylem area, fiber cell length, and cell numbers showed considerable increases. Several key BR-signaling genes, secondary xylem development-related transcription factor genes, and cellulose and lignin biosynthetic genes were also considerably altered. Thus, BR had regulatory roles in secondary xylem development and differentiation via the BR-signaling pathway in this woody plant.
Niche conservatism and convergence in birds of three cenocrons in the Mexican Transition Zone
Authors: Lizardo Viridiana , García Trejo Erick Alejandro , Morrone Juan J.
Published: January 2024

Background

The niche conservatism hypothesis postulates that physiological and phylogenetic factors constrain species distributions, creating richness hotspots with older lineages in ancestral climatic conditions. Conversely, niche convergence occurs when species successfully disperse to novel environments, diversifying and resulting in areas with high phylogenetic clustering and endemism, low diversity, and lower clade age. The Mexican Transition Zone exhibits both patterns as its biotic assembly resulted from successive dispersal events of different biotic elements called cenocrons. We test the hypothesis that biogeographic transitionallity in the area is a product of niche conservatism in the Nearctic and Typical Neotropical cenocrons and niche convergence in the Mountain Mesoamerican cenocron.

Methods

We split the avifauna into three species sets representing cenocrons (sets of taxa that share the same biogeographic history, constituting an identifiable subset within a biota by their common biotic origin and evolutionary history). Then, we correlated richness, endemism, phylogenetic diversity, number of nodes, and crowning age with environmental and topographic variables. These correlations were then compared with the predictions of niche conservatism versus niche convergence. We also detected areas of higher species density in environmental space and interpreted them as an environmental transition zone where birds’ niches converge.

Results

Our findings support the expected predictions on how niches evolved. Nearctic and Typical Neotropical species behaved as predicted by niche conservatism, whereas Mountain Mesoamerican species and the total of species correlations indicated niche convergence. We also detected distinct ecological and evolutionary characteristics of the cenocrons on a macroecological scale and the environmental conditions where the three cenocrons overlap in the Mesoamerican region.
Biviana Hernández. "Levantisca & Liberesca. Lecturas sobre poesía (1981-2014)"
Authors: Leighton Marianne
Published: January 2024

Sin resumen
Assessing Students’ Level of Awareness of their Constitutional Human Rights
Authors: Eshun Isaac
Published: January 2024

The main focus of this study was to assess the level of students’ human rights awareness at the University of Education, Winneba. The study adopted a pragmatic research paradigm using the mixed-method approach with an explanatory sequential design. The population for the study was the level 400 students of the University of Education, Winneba for the 2022/2023 academic year. A total of 368 students were carefully selected hinging on the Krejcie and Morgan tabulation formula from the total population of 9,408 final year students for the quantitative data. Sixteen (16) students were purposively selected from the sample size of 368 for a focus group discussion. Standard-based students’ academic rights and freedom questionnaires were adapted to merit the research context. The focus group discussion guide was designed from the quantitative questionnaire for triangulation purposes. Descriptive statistics (Mean and Standard Deviation) and inferential statistics (Independent sample t-test) were employed for the quantitative analysis, whilst qualitative content analysis was used for the qualitative analysis. As an insider, positionality issues and ethical considerations were professionally addressed to avoid any influence on the outcome of the research. The findings showed that students had a high level of human rights awareness about the right to life, while the right to a speedy trial was moderate, though it is among the general aspects of human rights to be enjoyed by all citizens. Overall, it was realized that students of the University of Education, Winneba had a high level of human rights awareness (M=4.24, SD=0.50). The results indicated that even though students within the 31-40 age range had a higher level of human rights awareness (M=4.45, SD=0.48) than those between the 21-30 age range (M=4.23, SD=0.50), the independent sample t-test results were not statistically significant [t (337) = -1.765, p>0.05, 2-tailed]. The qualitative data revealed that courses offered in the domain of human rights, seminars, conferences, flyers, newsletters, and basic school rules from students’ handbooks were some of the sources of their human rights awareness.
Benefit of Incorporating Technology in Special Education
Authors: Ramadani Phd. C. Refik , Mustafa Ragmi
Published: January 2024

The objective of this study is the application of technology in the process of learning by students with special needs. The author argued that the integration of information technology and various technological device help in enhancing learning outcome and social skills of students with disabilities., whether in the educational process or in socialization. The research methods used are of the combined type: quantitative and qualitative. Quantitative methods are part of the empirical research that involves parents, support teachers, school management, and representatives of associations of persons with disabilities. On the other hand, the qualitative method was employed to the focus group with 6 participants, with disabilities and a support teacher, where the discussion was assisted by the support teacher.
Evaluation of Methods of Adding Chitosan and Potassium Silicate on Some Soil Fertility and Cowpea (Vigna ungiculata) Plant Productivity
Authors: Ahmed Marwa A. , Mohaseb Mohamed I. , El-Sheikh Nashwa, M. , Shaban Khaled A.
Published: January 2024

This work aims to evaluate two methods of chitosan and potassium silicate application in 10, 15, and 20 days water irrigation on soil fertility and cowpea (Vigna unguiculata) productivit. A field experiment was conducted in saline soil located in Sahl El-Hossinia at El-Sharkia Governorate. The location lies between latitude 32° / 00 to 32° / 15, N and longitude 30° / 50 to 31° / 15 E. For two successive summer seasons 2021 and 2022 cultivated with Cowpea, to study the evaluation of two methods applied for chitosan and silicate potassium combined with or without mineral N fertilizers different rate on some soil fertility and cowpea productivity under irrigation water periods. The experiments were carried out in a split-plotdesign with three replicates. Results obtained that the decreases of soil pH and soil salinity, as well as the increase of available macro-micronutrients contents in soil as affected with potassium silicate foliar application combined with mineral N through intervals irrigation period 10 days compared to other treatments. the increase of plant height (cm), No. of pods/plant, No. of branches /plant, weight 100 seeds (g), weight pods (ton/fed), and seeds yield (ton/fed) with increasing mineral N fertilizer rate combined with potassium silicate foliar application under irrigation water interval 10 days compared with other treatments. Also, the highest mean values of N, P, Fe, Mn, and Zn concentrationsin seeds cowpea 4.16, 0.67, 9.20, 40.22 and 24.64 % respectively as affected with potassium silicate foliar application under irrigation water interval of 10 days than other treatments. From the previous results, we found that the method of foliar application of potassium silicate and chitosan under irrigation water at different periods has significant effects on all soil and plant characteristics compared to the soaking method.
In Constructive and Informal Mathematics, in Contradistinction to any Empirical Science, the Predicate of the Current Knowledge in the Subject is Necessary
Authors: Tyszka Apoloniusz
Published: January 2024

We assume that the current mathematical knowledge K is a finite set of statements from both formal and constructive mathematics, which is time-dependent and publicly available. Any formal theorem of any mathematician from past or present forever belongs to K. Ignoring K and its subsets, sets exist formally in ZFC theory although their properties can be time-dependent (when they depend on K) or informal. We explain the distinction between algorithms whose existence is provable in ZFC and constructively defined algorithms which are currently known. By using this distinction, we obtain non-trivially true statements on decidable sets X \(\subseteq\) \(\mathbb{N}\) that belong to constructive and informal mathematics and refer to the current mathematical knowledge on X . This and the next sentence justify the article title. For any empirical science, we can identify the current knowledge with that science because truths from the empirical sciences are not necessary truths but working models of truth about particular real phenomena.
Minuscule Amounts of Pt Single Atoms Selectively Loaded on Minor (101) Facet of Anatase Crystallites Enables Outstanding Utilization Efficiency for Photocatalytic H2 Production
Authors: Qin Shanshan , Denisov Nikita , Osuagwu Benedict , Kolařík Jan , Sarma Bidyut Bikash , Baďura Zdeněk , Schmuki Patrik
Published: January 2025

Pt single atoms (SAs) on TiO2 have been identified as effective co‐catalysts in solar photocatalytic H2 production. In this study, Pt SAs is deposited on single crystal anatase nanosheets (NSs) with minor (101) and major (001) facets and expose them to various thermal treatments in air, Ar, and Ar‐H2 environments. It is found that through Ar‐H2 annealing Pt‐species can be accumulated exclusively on the minor (101) facets, i.e., they can be concentrated selectively on the facet where electron exit occurs. This optimally establishes a high photocatalytic H2 evolution efficiency for an extremely low overall Pt SA loading of ≈0.005 wt.% on the anatase crystallites. For this most active SA placement, 11.7 mmol g−1 h−1 H2 production is obtained with a turnover frequency (TOF) up to 253 #H2 site−1 s−1. Note that the corresponding Pt SAs density of 3.1 × 104 atoms µm−2 is established by loading from only 0.2 µm Pt solution. These findings demonstrate that placing a very low density of Pt SAs as an electron transfer co‐catalyst onto the electron exit sites of a light‐harvesting structure (i.e., there where it is needed) can provide a most active photocatalytic structure with an outstanding Pt utilization.
Advanced Functional Spiropyran‐Based Smart Materials with Rapid and Reversible Photochromic Response for Optical Sensing Applications
Authors: Sharma Deepika , Goyal Sachin , Kumar Kamlesh , Sharma Amit L
Published: January 2025

Stimuli‐responsive materials with optical adaptibility to external triggers are versatile for diverse applications. Among these, smart chromic materials with molecular photoswitching enable real‐time absorption changes indications, crucial for optical sensing, security, sensors, authentication, and anti‐counterfeiting applications. This current study presents an intriguing approach to develop spiropyran (SP)‐based molecular switches with rapid and reversible photochromism. Three dual‐responsive functional SPs (f‐SPs) dyes with varying SP moieties (1–3) are synthesized using straightforward chemical method. The responsiveness of f‐SPs to dual stimuli, such as organic solvents with varying polarity and light sources of different wavelengths (365  and 530 nm), is investigated. The increasing polarity of solvents (non‐polar to polar) facilitated stabilization of SP to merocyanine (MC) isomer. On contrary, upon irradiation with light sources, functional dyes exhibited significant, real‐time, and highly reversible changes in absorption and color. The rapid photochromic reversibility is facilitated within 20 s with increased SP moieties. Furthermore, f‐SPs are incorporated into Polydimethylsiloxane (PDMS) polymer matrix. The resulting composite films displayed exceptional photostability, rapid reversible photochromic responses, and reduced photo fatigue. Additionally, versatility of optical sensing approach is demonstrated by tailoring structural isomerization of these materials for photo‐patterning applications. This work paves way for advanced photochromic materials with cutting‐edge applications.
Advancements in Non‐Noble Metal Based Plasmonic Materials for Sustainable Nitrogen Photofixation
Authors: Thapa Dev Kumar , Biswas Soumava
Published: January 2025

Ammonia is vital for industries, especially agriculture, where it is used in fertilizers to boost crop yields. Globally, about 176 million tons of ammonia is produced annually. Its synthesis relies on the Haber–Bosch process, which is energy‐intensive (, 150 atm) and environmentally unsustainable. This has sparked considerable interest in developing alternative, more sustainable approaches for nitrogen fixation. One promising area of research is plasmonics. Plasmonics explores light interaction with nanomaterials, traditionally using noble metals like gold and silver, which are costly and scarce for large‐scale use. Alternative materials such as bismuth, aluminum, and metal oxides exhibit plasmonics, providing a more sustainable and affordable solution for industrial applications. Recent research have focused on optimizing these non‐noble metal plasmonic materials for sustainable nitrogen fixation. This review offers in‐depth understanding of plasmonics in both noble and non‐noble metals. The review then delves into the mechanisms of photocatalytic processes, particularly hot carrier generation, offering insights into their role in enhancing catalytic efficiency. Furthermore, the review highlights cutting‐edge research on photocatalytic nitrogen fixation, emphasizing the use of alternative plasmonic materials as a sustainable approach to ammonia synthesis. Finally, it identifies challenges, suggests solutions, and sets the stage for advancing plasmonic photocatalysis.
NGR‐Modified CAF‐Derived exos Targeting Tumor Vasculature to Induce Ferroptosis and Overcome Chemoresistance in Osteosarcoma
Authors: Du Jianxin , Meng Xiangwei , Yang Minghao , Chen Guancheng , Li Jigang , Zhu Zengjun , Wu Xuanxuan , Hu Wei , Tian Maojin , Li Tao , Ren Shuai , Zhao Peiqing
Published: January 2025

Osteosarcoma (OS) chemoresistance presents a significant clinical challenge. This study aims to investigate the potential of using tumor vascular‐targeting peptide NGR‐modified cancer‐associated fibroblasts (CAFs)‐derived exosomes (exos) to deliver circ_0004872‐encoded small peptides promoting autophagy‐dependent ferroptosis to reverse chemoresistance in OS. Through combined single‐cell transcriptome analysis and high‐throughput sequencing, it identified circ_0004872 associated with chemoresistance. Subsequent experiments demonstrated that the small peptide encoded by this Circular RNA (circRNA) can effectively reverse chemoresistance by enhancing OS cell sensitivity to chemotherapy via the mechanism of promoting autophagy‐dependent ferroptosis. Moreover, in vitro and in vivo results confirmed the efficient delivery of NGR‐modified CAFs‐derived exo‐packaged circ_0004872‐109aa to tumor cells, thereby improving targeted therapy efficacy. This study not only offers a novel strategy to overcome chemoresistance in OS but also highlights the potential application value of utilizing exos for drug delivery.
Experimental Realization of On‐Chip Surface Acoustic Wave Metasurfaces at Sub‐GHz
Authors: Wang Wan , Baranski Maciej , Jin Yabin , Salut Roland , Belharet Djaffar , Friedt Jean‐Michel , Pan Yongdong , Xiang Yanxun , Xuan Fu‐zhen , Khelif Abdelkrim , Benchabane Sarah
Published: January 2025

Metasurfaces, consisting of subwavelength‐thickness units with different wave responses, provide an innovative possible method to manipulate elastic and acoustic waves efficiently. The application of metasurfaces to manipulate on‐chip surface acoustic wave (SAW) at sub‐GHz frequencies requires further exploration since their wave functions are highly demanded in nanoelectromechanical systems (NEMS), sensing, communications, microfluid control and quantum processing. Here, the experimental realization of on‐chip SAW metasurfaces is reported, consisting of gradient submicron niobium (Nb) rectangular pillars positioned on a 128°Y‐cut lithium niobate (LiNbO3) substrate that operate at hundreds of megahertz. The proposed SAW metasurfaces are able to manipulate transmitted SAW wavefront functions by designing on‐demand pillar's profile distributions. Broadband subwavelength focusing effects as the typical functions of SAW metasurfaces are experimentally demonstrated. This study opens a door for realizing on‐chip SAW metasurfaces for diverse potential applications at micro‐ and nanoscale.
LncRNA TUG1 Repressed Angiogenesis by Promoting the Ubiquitination of HuR and Inhibiting Its Nuclear Translocation in Cerebral Ischemic Reperfusion Injury
Authors: Jiang Hongxiang , Cai Qiang , He Peidong , Li Fei , Chen Qianxue
Published: January 2025

Although both Taurine Upregulated Gene 1(TUG1) and Human Antigen R (HuR) play significant regulatory roles in Cerebral Ischemic Reperfusion Injury (CIRI), their potential pro‐angiogenesis mechanisms in CIRI remain unclear. Methods: Herein, the biological roles of TUG1 and HuR in angiogenesis are first confirmed. Following that, HuR‐binding VEGFA mRNAs are identified via the Fluorescence In Situ Hybridization (FISH), RNA Immunoprecipitation (RIP), and Cross‐Linking Immunoprecipitation (CLIP) assays. Actinomycin D and polysomal assays are also employed to confirm VEGFA mRNA stability. The co‐localization of TUG1 with HuR is confirmed using FISH, while the RIP and RNA pull‐down assays are employed to elucidate their interplay. The direct binding between TUG1 and HuR is confirmed through the CLIP assay. Co‐Immunoprecipitation (Co‐IP) and rescue experiments are performed to further elucidate TUG1‐HuR interactions. Results: While TUG1 repressed angiogenesis and aggravated CIRI, HuR exerted contrary effects. Specifically, HuR bound directly to VEGFA mRNA, a phenomenon that enhanced VEGFA mRNA stability. Conversely, TUG1 binds to HuR directly, inhibiting its nuclear translocation and promoting its ubiquitination, ultimately reducing VEGFA mRNA stability. Conclusions: It is found that TUG1 can inhibit angiogenesis in CIRI through the HuR/VEGFA mRNA axis.
Electrically‐Shielded Coil‐Enabled Battery‐Free Wireless Sensing for Underwater Environmental Monitoring
Authors: Wu Ke , Zhu Xia , Anderson Stephan W. , Zhang Xin
Published: January 2025

Battery‐free wireless sensing in extreme environments, such as conductive solutions, is crucial for long‐term, maintenance‐free monitoring, eliminating the limitations of battery power and enhancing durability in hard‐to‐reach areas. However, in such environments, the efficiency of wireless power transfer via radio frequecny (RF) energy harvesting is heavily compromised by signal attenuation and environmental interference, which degrade antenna quality factors and detune resonance frequencies. These limitations create substantial challenges in wirelessly powering miniaturized sensor nodes for underwater environmental monitoring. To overcome these challenges, electrically‐shielded coils with coaxially aligned dual‐layer conductors are introduced that confine the electric field within the coil's inner capacitance. This configuration mitigates electric field interaction with the surrounding medium, making the coils ideal for use as near‐field antennas in aquatic applications. Leveraging these electrically‐shielded coils, a metamaterial‐enhanced reader antenna was developed and a 3‐axis sensor antenna for an near‐field communication (NFC)‐based system. The system demonstrated improved spectral stability, preserving resonance frequency and maintaining a high‐quality factor. This advancement enabled the creation of a battery‐free wireless sensing platform for real‐time environmental monitoring in underwater environments, even in highly conductive saltwater with salinity levels of up to 3.5%.