bluuebunny/crossref_metadata_2025 huggingface dataset:
Evaluation of the knowledge of general practitioners in the region of Fez regarding the management of sexually transmitted infections
Authors:   Dermatology Department, Hospital University Hassan II, Fez, Morocco, Mejjati Kaoutar , Soughi Meryem , Douhi Zakia , Elloudi Sara , Baybay Hanane , Mernissi Fatima Zahra , Benjaafar Jaafar Marrakchi , Ahsaini Mustapha , Mellas Soufiane , El Ammari Jalal Eddine , Tazi Moahammed Fadl , El Fassi Mohammed Jamal , Farih Moulay Hassan ,   Urology Department, Hospital University Hassan II, Fez, Morocco
Published: January 2025

Background: Sexually transmitted infections (STIs) are a major public health, frequently seen by general practitioners central to healthcare. This study evaluated the knowledge and practices of general practitioners in Fez regarding STIs.

Materials and Methods: A cross-sectional study involving 73 general practitioners used a questionnaire to assess their STI knowledge and practices.

Results: Most practitioners (63%) had received specific STI training, and 95.9% had treated STI cases. Urethritis was the most common condition (87.14%), with 88.57% of the practitioners treating patients after clinical assessment. A majority (83.6%) were familiar with the syndromic approach for genital ulceration and urethral discharge.

Conclusion: Fez’s general practitioners and emphasizing the need for ongoing medical education. Their role is crucial in addressing STIs, especially in underprivileged communities.

Key words: Genital ulceration, Urethritis, Syndromic approach, General practitioners
Histoplasmosis in an immunocompetent adult
Authors:   Bamako Faculty of Medicine and Odontostomatology, Bamako, Mali, Dicko Adama Aguissa ,   Bamako Dermatology Hospital, Dermatology Department, Bamako, Mali, Cissé Lamissa , Traore Aboubacrine , Tall Koreissi Tall , Guindo Binta , Faye Ousmane
Published: January 2025

Histoplasmosis is a fungal infection of the skin and lungs, often involving multiple organs. They are opportunistic mycoses usually in HIV-positive patients. Herein, we report the case of a 51-year-old immunocompetent adult. On examination, the patient was generally unwell and had no fever. Multiple subcutaneous nodules were noted. These nodules were of variable size, ulcerated in places, umbilicated in appearance, and painful to the touch. They were located on the head, nose, back, thighs, and arms. Bilateral symmetrical axillary lymph nodes were firm, painless, and mobile. Tzanck cytodiagnosis showed birefringent cells in all fields. A chest X-ray showed accentuated vascular patterns and basal pleurisy. Skin and lymph node biopsies were consistent with Histoplasma capsulatum duboisii histoplasmosis. The patient was treated with itraconazole. After eight months of treatment, we noted complete healing of the lesions.

Key words: Cutaneous histoplasmosis, Immunocompetent, Disseminated
A MODEL THAT HELPS STAKEHOLDERS STRATEGIZE ENTREPRENEURIAL DEVELOPMENT AMONG THE STUDENTS IN OMAN
Authors: Tumati Raja , Daşkın Mustafa
Published: January 2025

Entrepreneurship plays a significant role in a country's economic growth, innovation, and transformation. Despite its significance, many graduates are unable to fulfil their desire to start a new business because of a number of internal and external challenges. Therefore, the main aim of this study is to develop a model that helps stakeholders strategize entrepreneurial development among students in Oman. In this study, different literature sources and previous research were used. This study uses a deductive research approach and primary data was collected through a non-probability sampling technique, with a sample size of 478 responses
The study model covers everything from ideation to planning, business growth to resource allocation, market analysis, and structural support, with the aim of fostering student entrepreneurial growth. Thus, this study adds new information to the related literature and the industry. The research model can influence entrepreneurship growth in Oman by providing practical tools and knowledge to navigate the complexities of starting and maintaining new business. Also, it has potential to improve Oman's entrepreneurial ecosystem, reduce obstacles, improve entrepreneurial intentions, and pave the way for students’ entrepreneurial endeavours.
Offline prompt reinforcement learning method based on feature extraction
Authors: Yao Tianlei , Chen Xiliang , Yao Yi , Huang Weiye , Chen Zhaoyang
Published: January 2025

Recent studies have shown that combining Transformer and conditional strategies to deal with offline reinforcement learning can bring better results. However, in a conventional reinforcement learning scenario, the agent can receive a single frame of observations one by one according to its natural chronological sequence, but in Transformer, a series of observations are received at each step. Individual features cannot be extracted efficiently to make more accurate decisions, and it is still difficult to generalize effectively for data outside the distribution. We focus on the characteristic of few-shot learning in pre-trained models, and combine prompt learning to enhance the ability of real-time policy adjustment. By sampling the specific information in the offline dataset as trajectory samples, the task information is encoded to help the pre-trained model quickly understand the task characteristics and the sequence generation paradigm to quickly adapt to the downstream tasks. In order to understand the dependencies in the sequence more accurately, we also divide the fixed-size state information blocks in the input trajectory, extract the features of the segmented sub-blocks respectively, and finally encode the whole sequence into the GPT model to generate decisions more accurately. Experiments show that the proposed method achieves better performance than the baseline method in related tasks, can be generalized to new environments and tasks better, and effectively improves the stability and accuracy of agent decision making.
How many reptile and amphibian species are in Uganda, and why it matters for global biodiversity conservation
Authors: Hughes Daniel F. , Behangana Mathias
Published: January 2025

Biodiversity is unevenly distributed across the globe. Regional differences in biodiversity impact conservation through the allocation of financial resources, development of infrastructure, and public attention. Such resources are often prioritized to areas that are in more need than others. However, reasons for deciding which locations are more deserving are derived from an accurate knowledge of the number and composition of species that occur in each region. Regional differences in biodiversity, however, can reflect differences in the source of information consulted, rather than bona fide differences between areas. As a result, conservation resources may not be directed to regions in proportion to their actual need, especially if there is no consensus among sources of information. Here, we compared major sources of information on species of reptiles and amphibians that occur in Uganda, Africa. We found that none of the sources agreed on the total number, nor composition, of species in the country, with estimates for amphibians ranging more widely than those for reptiles. Notably, sources with similar species richness differed in species composition, which had an impact on the number of threatened species in the country. These results for a conspicuous group of vertebrates suggest that lesser-known groups are also likely misrepresented in sources, especially in other underexplored regions of tropical Africa. We discuss the implications for biodiversity conservation that are derived from inaccurate species lists that are commonly used by agencies, scientists, and practitioners. We argue that more critical evaluations of biodiversity resources, in addition to greater capacity building for field programs, taxonomy, and museum collections, will be essential to ensure that resources are allocated to regions that need them the most.
AGUAS GRISES: APORTES DE CEDEUS SOBRE TECNOLOGÍAS DE TRATAMIENTO, PERCEPCIÓN SOCIAL Y DESARROLLO DE NORMATIVAS EN CHILE PARTE 2
Authors: Gallardo Carlos , Vargas Ignacio , Gironás Jorge , Molinos María , Bertoli Rodolfo
Published: January 2025

El presente documento se enmarca en investigaciones realizadas por CEDEUS sobre la percepción pública respecto al reúso de aguas grises en Santiago de Chile y las contribuciones y avances en el desarrollo de nuevas normas chilenas referidas al reúso de aguas.
Las concesiones mineras constituidas bajo la vigencia del Código de Minería de 1932 para explotar sustancias no metálicas: ¿habilitan para explotar litio hoy?
Authors: De La Barra García Benjamín
Published: January 2025

El presente comentario de jurisprudencia se basa en el análisis de la Causa Rol: 13228-2022, Caratulada: SIMBALIK GROUP INVERSIONES LIMITADA CON FISCO DE CHILE (MRA.), fallada por la Corte Suprema por medio del recurso de casación en el fondo.
La controversia jurídica de la causa se centra en la habilitación del titular, en este caso de Simbalik Group Inversiones Limitada, para explotar el litio ubicado dentro de los limites de sus pertenencias, las que fueron constituidas bajo la vigencia del Código de Minería de 1932, para explotar cloruro de sodio, sustancia no metálica, y antes de la reserva del litio en favor del Estado.
El Código de Minería de 1932, permitía el otorgamiento de concesiones mineras sobre algunas sustancias minerales en particular y la coexistencia de dos o más concesiones en un mismo lugar. Las concesiones de sustancias no metálicas únicamente habilitaban para explotar la sustancia por la cual fueron otorgadas. En consecuencia, el “Código de 1932” establecía un sistema de concesiones diferente al actual.
La pregunta que surge, entonces, es si, de acuerdo con la legislación minera actualmente vigente, puede entenderse o no, que las concesiones constituidas bajo el sistema anterior para la explotación de sustancias no metálicas habilitan a su titular a explotar litio, el cual sí es metálico y se encuentra reservado al Estado de Chile desde 1979.
Lo interesante de la causa es la existencia de diferentes posturas representadas principalmente por el sector privado y público, y ambas son manifestadas en el fallo de la Corte Suprema por los ministros Andrea Muñoz y Ricardo Blanco, respectivamente, a diferencia de la causa Rol: 104697-2023.
Responsabilidad del Estado por inactividad administrativa
Authors: Román Cordero Cristian
Published: January 2025

Una nota característica de la responsabilidad del Estado en tanto Administrador, que la diferencia ostensiblemente de la responsabilidad civil extracontractual, radica en que si en esta última la hipótesis omisiva o, lo que es lo mismo, inactiva, es excepcionalísima; en la primera, no sólo se sitúa a la par de la hipótesis activa, sino que, cada vez más, adquiere mayor protagonismo. La razón de ello radica en que mientras en el Derecho Civil rige la “lógica del egoísmo”, conforme a la cual nadie está obligado a sacrificar lo propio en beneficio de otros; en el Derecho Administrativo rige el “principio de servicialidad”, conforme al cual el Estado/Administración está al servicio de la persona humana, o el “principio del servicio público”, conforme al cual esta última existe, se justifica y se legitima, sólo en tanto y en cuanto satisface necesidades colectivas en forma regular y continua. Así, la Administración, conforme al Ordenamiento Jurídico, tiene múltiples deberes de actuación, directos o indirectos (o implícitos), lo que es aun más patente (e imperativo para ésta) en el contexto de las sociedades actuales singularizadas por múltiples e importantes riesgos, por ejemplo, alimentos, medicamentos, vías públicas, industrias peligrosas, etcétera.
Luis Claro Solar y el contencioso administrativo: Reedición de un desatendido fragmento de su obra
Authors: Vergara Blanco Alejandro
Published: January 2025

Se reproduce, con algún aparato crítico, un fragmento (algo más de tres páginas, con sus notas) del tomo sexto de las Explicaciones de Derecho civil chileno y comparado, de Luis Claro Solar, quien, en 1930, a propósito del desarrollo de la materia del cumplimiento de las deudas del Fisco, se refiere al contencioso administrativo; páginas estas que son de interés para la historia del Derecho administrativo chileno.
La Ley marco de cambio climático y el soterramiento de líneas eléctricas: Un enfoque integral para la resiliencia energética
Authors: Vergara Abarzúa Loreto
Published: January 2025

El cambio climático, fenómeno global que está alterando los patrones climáticos en diversas partes del mundo, presenta desafíos significativos para países como Chile, que ha comenzado a experimentar de forma intensificada sus efectos adversos. Ante este escenario, el legislador chileno promulgó en 2022 la Ley N° 21.455, conocida como la Ley Marco de Cambio Climático (LMCC), cuyo objetivo principal es impulsar un enfoque integral de adaptación y mitigación. La ley busca reducir la vulnerabilidad del país y aumentar la resiliencia frente a los impactos climáticos.

El sector energético, en particular las líneas eléctricas, es uno de los más vulnerables a los fenómenos climáticos extremos. En los últimos años, Chile ha sido testigo de graves afectaciones en su infraestructura eléctrica debido a incendios forestales, tormentas intensas y vientos extremos. Durante el verano de 2023, los incendios forestales arrasaron con miles de hectáreas de bosque, afectando directamente las instalaciones eléctricas. Además, el temporal de agosto de 2023 dejó a miles de usuarios sin suministro eléctrico en el centro-sur del país, poniendo en evidencia la vulnerabilidad de las redes eléctricas chilenas frente a estos eventos.

Este contexto resalta la urgente necesidad de aumentar la resiliencia del sistema eléctrico, adaptándolo a las nuevas condiciones climáticas extremas para asegurar la continuidad del servicio y proteger la infraestructura crítica de Chile.
Delimitación de la prohibición de reformatio in peius en el ordenamiento jurídico peruano: propuesta para una aplicación coherente
Authors:   Pontificia Universidad Católica del Perú, Borrovic Ramirez Nicole Alexandra
Published: January 2025

La aplicación de la prohibición de reformatio in peius en sede administrativa constituye una cuestión confusa en el Perú. Este principio, destinado a limitar la actuación de la Administración Pública, evitando que empeore la situación del apelante al resolver un recurso administrativo, enfrenta serias dificultades para cumplir su objetivo cuando la autoridad administrativa decide declarar la nulidad de una sanción y remitirla a la autoridad que la emitió. La diversa casuística administrativa peruana, demuestra que, frente a esta circunstancia, algunas autoridades administrativas cuyo acto fue anulado, en algunos casos y si así determinan que corresponde, imponen una sanción más grave o se abstienen de hacerlo, según cómo comprendan a la prohibición de reformatio in peius.

Por tanto, con el propósito de establecer claridad sobre el particular, el presente artículo examina el fundamento del principio de prohibición de reforma en peor en el derecho administrativo peruano, así como las implicaciones de la declaración de nulidad de una sanción por la comisión de una conducta infractora, y en términos de la emisión de una nueva sanción, especialmente si esta es mayor. Además, se analizan los elementos y fundamentos considerados para la declaración de nulidad de una conducta infractora ante un vicio de motivación subsanable.
Tribunales de Justicia y Contraloría General de la República: ¿cómo compatibilizar sus pronunciamientos jurisprudenciales contradictorios?
Authors:   Universidad de Talca, Cárcamo Righetti Alejandro
Published: January 2025

El presente trabajo analiza sucintamente una de las problemáticas centrales que en opinión del autor presenta la potestad dictaminante de la Contraloría General de la República, como lo es la forma de compatibilizar los pronunciamientos que de ella emanan con la jurisprudencia judicial, cuando se sustentan criterios contradictorios.
Explotación involuntaria de sustancias minerales concesibles por parte del Estado o titular de un contrato especial de operación
Authors:   Universidad de Chile y de los Andes, Vergara Gutiérrez Rafael , Urrutia Guzmán Maximiliano
Published: January 2025

El presente trabajo responde si existe algún deber del Estado, sus empresas o el titular de una concesión administrativa o contrato especial de operación para con concesionarios mineros cuando, en la exploración o explotación de sustancias minerales no concesibles, se encuentran sustancias minerales concesibles.
Ausencia de tribunales del contencioso administrativo en Chile: ¿Falta de influencia de la doctrina? El caso de Luis Claro Solar
Authors:   Pontificia Universidad Católica de Chile, Vergara Blanco Alejandro
Published: January 2025

Son dos las materias capitales que desaparecieron de la escena del Derecho administrativo chileno durante casi toda su historia: primero, una cierta especialización jurisdiccional; esto es, la existencia de un contencioso administrativo; de unos tribunales que sean especializados en esa materia o, no siendo especializados, que tengan al menos una tendencia hacia la especialización; y, segundo, del reconocimiento de los derechos subjetivos de los administrados, que son la base para el funcionamiento de unos tribunales del contencioso administrativo o de una justicia ordinaria que pueda acogerlos. Pero, en nuestro país, desde mediados del siglo XIX y hasta bien avanzado el siglo XX, desaparecen esas dos ideas capitales: nunca se han creado tribunales del contencioso administrativo y el ideario de los derechos subjetivos de los administrados sólo aparece formalmente consagrado en la Constitución de 1980.
Derecho a defensa de funcionarios públicos y municipales: criterios de la jurisprudencia administrativa
Authors: Ulloa Eyzaguirre Tamara
Published: January 2025

Este trabajo tiene por objeto establecer cuáles son los criterios para que opere el derecho estatutario a defensa, que tiene como propósito proteger a los funcionarios públicos y municipales que ven afectadas su vida, integridad física o su honra al ser objeto de injurias o calumnias. En tal sentido, a partir de la revisión de jurisprudencia administrativa se abordará el contenido, alcance y requisitos del derecho a defensa.
Magna Rodríguez, Carlos y Escobar Toro, Elizabeth (compiladores). Derecho administrativo y Constitución. Actas de las XVII Jornadas de Derecho Administrativo. Valencia: Tirant lo Blanch, 2024, 354 pp.
Authors: Carrasco Loncharic Sofía Paz
Published: January 2025

La publicación objeto de esta reseña son las Actas de las XVII Jornadas de Derecho Administrativo, que fueron organizadas por la Facultad de Ciencias Sociales, Empresariales y Jurídicas de la Universidad de La Serena, celebradas en La Serena, en noviembre del año 2021. El tema de las Jornadas fue “Derecho Administrativo y Constitución”, con el propósito de participar en el debate constitucional que tomó lugar en nuestro país entre 2021 y 2023 y contribuir desde la perspectiva del Derecho administrativo.
Sampling and testing for quality assurance of pavement preservation and treatments
Authors: Sebaaly Peter
Published: January 2025

Pavement preservation is essential to maintaining viable road infrastructure, slurry seal and microsurfacing, referred to as “slurry system” are widely used as cost-effective techniques for preserving asphalt concrete pavements. However, there is a need for better quality assurance (QA) tools to ensure compliance with approved job mix formulas. This research aimed to devise a field sampling procedure for slurry systems and develop a reliable and accurate QA system to determine the water content and asphalt residue content present in slurry mixes. To be deemed adequate, sampling techniques must satisfy three main criteria: sufficient amount of sampled mixture to determine asphalt residue content, safety of the sampler, and uniform and consistent collected samples. The utility cover sampling technique involves placing a non-absorptive material over a utility cover, as the mix spreader applies the mixture, the cover gets coated with a layer of slurry. This study found that asphalt felt was the most successful material for slurry mix sample collection from utility covers. The study concluded that the oven evaporation method is effective in determining the water content and the ignition oven test is effective in determining the asphalt residue content in slurry mixes.
3D printed concrete as a source of recycled aggregates: potential for multi-recycling and CO2 sequestration
Authors: Navarrete Iván , Tosic Nikola , Hermida José Luis , Saavedra Ruth , Etxeberria Miren
Published: January 2025

Additive manufacturing of concrete (3D printed concrete, 3DPC), is an emerging technology with numerous possible applications and benefits for the digital transition of the construction industry. At the same time, there remain open questions about the environmental suitability of 3DPC. One such aspect is its circularity, i.e. recyclability. Therefore, in this study, the viability of recycling 3DPC is studied on normal- and high-strength 3DPC concretes produced with 0–100% of fine recycled aggregate (fRA). After testing for basic mechanical properties, the specimens were crushed and new (2nd generation) fRA were obtained and tested. The results point to a high potential for recyclability of 3DPC and fRA conducive to multi-recycling and CO2 uptake through carbonation.
Advancements in low carbon emission cements for 3D printing a state-of-the-art review
Authors: Silvestro Laura , Scoczynski Rodrigo , Navarrete Iván
Published: January 2025

Concrete production, heavily reliant on Ordinary Portland Cement (OPC), is a significant contributor to global CO2 emissions, responsible for about 8% of human-related emissions. While past efforts to reduce the carbon footprint of cement focused on improving energy efficiency and incorporating supplementary cementitious materials (SCMs), recent innovations have shifted towards low-carbon binders like calcium sulfoaluminate (CSA) cement, limestone calcined clay (LC3) cement, and geopolymers. These alternatives offer considerable reductions in CO2 emissions during production. However, the adoption of these materials faces challenges, particularly in 3D-printed concrete (3DPC), an emerging construction method that demands specific rheological and mechanical properties. Research into these low-carbon binders shows that CSA cement provides rapid strength development, LC3 mixtures offer promising environmental benefits and structural integrity, and geopolymers achieve high compressive strength but require optimization for durability. This study summarizes a review of the effects of these binders on the fresh properties, mechanical performance, and durability of concrete, emphasizing their potential for use in 3DPC. The findings underscore the importance of optimizing material properties for enhanced performance and sustainability in the construction industry.
CO2 mineralization in the production of sustainable concrete
Authors: De la Varga Igor , Sargam Yogiraj , Martins Alexio Daniel
Published: January 2025

As the concrete industry continues to grapple with the challenge of reducing its carbon footprint, CO2 mineralization technologies offer a practical and scalable solution. These technologies enable the integration of CO2 as a valuable raw material, transforming waste emissions into durable mineral compounds during the concrete production process. This study investigates the implementation of CO2 mineralization in fresh concrete, analyzing its effects on key material properties such as strength and durability. Experimental results reveal that the process not only ensures equivalent compressive strength of concrete with a reduced cement content, but also contributes to reductions in embodied carbon compared to traditional methods. Furthermore, the study underscores the role of this approach in supporting the industry's decarbonization efforts, aligning with global sustainability goals. The findings highlight CO2 mineralization as a pivotal step toward the creation of more sustainable construction materials, offering both environmental and economic benefits. These conclusions demonstrate the transformative potential of this technology in advancing the sustainability of concrete production while addressing the pressing demand for eco-friendly construction practices.
¿Pueden hablar los sicarios?
Authors: Parejas Fierro Héctor
Published: January 2025

El presente artículo busca indagar sobre la noción de sujeto subalterno y su inherente incapacidad enunciativa-discursiva en la novela sicaresca. En primer lugar, se analizará la relación entre el letrado y el subalterno desde el enfoque teórico-critico que proporcionan los estudios de la Dra. Margarita Jácome y el Dr. Oscar Osorio, dialogando las posturas de ambos académicos y enfatizando las estrategias narrativo-lingüísticas que ellos identifican al interior de dos novelas constitutivas del género: La Virgen de los sicarios de Fernando Vallejo y Sangre ajena de Arturo Alape. En segundo lugar, se analizará la estructura narrativa de Cachorro de Charlie Becerra, con especial atención en la figura del narrador y su voz, esto con el objetivo de explorar la posibilidad de subvertir la dialéctica letrado-subalterno y con ello dotar de una voz autónoma y capacidad enunciativa-discursiva al personaje sicario en tanto que sujeto subalternizado. Por último, establecida esta posible autonomía, se analizará a través del trabajo de citas el discurso narrativo-figural de Cachorro en aras de discernir cuál es el propósito de dicho discurso y cuáles son las implicancias éticas de otorgar voz al sicario en la ficción.
Vibraciones y reverberaciones de Gong: tablero de arte y literatura (1930-1931). Lecturas de un acontecimiento de la vanguardia de Valparaíso
Authors: Urzua Macarena
Published: January 2025

El objetivo de este artículo es analizar la revista de vanguardia Gong: tablero de arte y literatura (1929-1931), dirigida por Oreste Plath. Contextualizaremos esta publicación en el marco de la vanguardia tardía en Valparaíso, considerando la articulación de redes de correspondencia que en ella se exhiben con publicaciones similares del continente (especialmente con revistas peruanas), y atendiendo a algunas colaboraciones de Gong, entre ellas las de César Vallejo. En segundo lugar, analizaremos la composición visual de Gong, observando las técnicas que son utilizadas para el diseño de sus páginas, particularmente la composición gráfica (Viu, Tarcus) del nombre Gong a lo largo de sus números.
Tormenta en el desierto: neoliberalismo y desastre socionatural en dos testimonios del 25M en Atacama
Authors: Carvajal Gustavo
Published: January 2025

Este artículo analiza dos testimonios de los aluviones del 25 de marzo de 2015 (25M) en Atacama: Renacer entre el lodo de Hilda Olivares (2015) y LA DEFENSA, mi defensa de Brisa Mánquez (2016). El 25M fue un evento hidrometereológico extraordinariamente inusual con consecuencias catastróficas para la zona. El testimonio de Olivares relata la tragedia de la ciudad-puerto de Chañaral, destruida por el desborde del Río Salado. Por su parte, el testimonio de Mánquez narra la tortuosa reconstrucción de Paipote, asentamiento ubicado a 8 kilómetros de la capital regional Copiapó. En última instancia, el estudio de ambos testimonios confirma su potencial crítico para revelar cómo algunas condiciones estructurales neoliberales se encuentran en la base de la precariedad de los sectores más vulnerables de la región, intensificada y revelada por el 25M.
Lectura palimpsestuosa de "El Aleph" La puesta en ejercicio de tres relaciones transtextuales.
Authors: López Romero Berenice
Published: January 2025

El objetivo de este artículo es ver el despliegue de tres relaciones transtextuales: la intertextualidad, la hipertextualidad –muy conocidas en los estudios literarios– y la alotropía literaria –que se propone como una relación transtextual emergente–, a partir del análisis del cuento “El Aleph”, de Borges. Así, el análisis literario se realiza en función de los tres tipos de relaciones que el famoso cuento establece con los siguientes textos: “El huevo de cristal”, de Wells, donde puede verificarse un vínculo intertextual; “Help a él”, de Fogwill, en el que se advierte la relación hipertextual; y con “El Aleph engordado”, de Katchadjian, en donde tiene lugar la práctica de la alotropía literaria.
Sexodisidencia polifónica, neoliberalismo y performatividades sociogenéricas en El verbo J, de Claudia Hernández
Authors: Artigas Carrillo Franco
Published: January 2025

El propósito del presente artículo consiste en sugerir una lectura del diálogo entre los procedimientos escriturales de El verbo J y las sexodisidencias que el texto escenifica. A partir de ello, y relacionada con la polifonía escritural del texto de Claudia Hernández, se propone la sexodisidencia escenificada como visibilización de la constitución intersubjetiva y citacional del género en tanto revisión desarticuladora de su plasticidad, la cual, al acercarse progresivamente a las matrices de poder de la racionalidad neoliberal, devela, en complicidad con el género, el estatuto performático de la clase socioeconómica como dispositivo de producción de cuerpos y subjetividades.
Hacia la Ley de matrimonio igualitario en Chile.
Authors: Biland Émilie , Hersant Jeanne
Published: January 2025

Este artículo ahonda en los procesos sociales, políticos y judiciales que desembocaron en que Chile, un país históricamente conservador en materia de sexualidad, género y familia, llegara a aprobar en 2021 una ley que reconoce el matrimonio y la filiación para las parejas del mismo sexo. Para ello, la investigación se fundamenta en el análisis de 42 entrevistas semiestructuradas con activistas, abogados, jueces, asesor presidencial y progenitores; 490 artículos de prensa; 11 registros judiciales y las discusiones parlamentarias de dos proyectos de ley. En base a aquellas fuentes, proponemos una genealogía de la Ley de matrimonio igualitario que rescata tanto las dinámicas políticas de mediano – la post dictadura – y corto plazo – el “Octubre chileno” del 2019. Analizamos la articulación de tres espacios de movilización: el mediático, el judicial y el legislativo. De hecho, el activismo gay y lésbico ha sido capaz de articular varias estrategias, con el fin de superar los bloqueos inherentes a cada espacio y ampliar su apoyo. En cuanto al espacio judicial, mostramos la interconexión entre los niveles nacional (importancia de la litigación estratégica a nivel de primera instancia), inter y supranacional (framing de los derechos gays y lésbicos en referencia al derecho internacional de los DDHH). La movilización legal, que suele ser abordada en los sistemas de derecho común donde las decisiones judiciales constituyen un precedente vinculante, ha resultado ser un canal efectivo para influenciar a los decidores políticos en un sistema de derecho civil como es Chile
Impact of Agricultural Diversification on Food Security among Smallholder Farming Community in Kilifi South Sub-County, Kenya
Authors: Chege J. M. , Wamukota A. W.
Published: January 2025

Food security is critical to the economic, social, religious, political and cultural development in Kenya. It is crucial to the attainment of economic growth, poverty reduction and sustainable development. Kilifi Sub-County is food insecure and this is a major hindrance to its rural development strategy. Rainfall unreliability, poor distribution and its erratic nature is major challenge to food security in this Sub-County. Despite past efforts put to increase food agricultural production in the Sub-County, food insecurity continues to be felt. Factors causing food insecurity are not clearly understood. The objective of this study is to: determine the influence of agricultural diversification as a livelihood strategy on food security status in Kilifi Sub-County. The research methodology involved a survey using a standard questionnaire which was administered to a sample size of 384 households selected using systematic random sampling procedure. The main data to be collected are indicators which include food availability and food access. Quantitative research method was used to capture data on agricultural diversification as a livelihood strategy among the smallholder farmers in Kilifi south Sub-County. To further enhance food security and improve food security status in Kilifi South Sub-county, engagement in agricultural diversification activities should be encouraged. The findings of this study would be beneficial to leaders, stakeholders and policy makers in decision making process pertaining suitable interventions in attainment of food security in Kilifi South Sub-county. The data was analyzed using multiple regression to measure the combined contribution of livelihood strategies. The analysis of the influence of agricultural diversification on food security revealed that 19% of the households kept cows, 13% kept sheep, 33% kept goats and 35% kept poultry. Additionally, 62% relied on maize, 9% on cassava, 2% on sorghum, 18% on cowpeas and 9% relied on coconut. The study revealed that the households which kept poultry were 35% food secure and those who planted maize and cowpeas were 62% and 18% food secure respectively. It was recommended that these variables were to be addressed by all stakeholders in order to improve the food security status.
Discover the Impact of Sulfur and Potassium on the Nitrogen, Phosphorus, Sulfur and Potassium Concentrations in Onion Bulbs
Authors: Manik Md. Mahmudul Hasan , Razzaque Md. Abdur , Haque Md. Imdadul , Bashar Md. Abul , Joha Md Ruhul Kuddus , Hossain Alif
Published: January 2025

A scientific Research has been conducted using a RCBD technique with three replications, are focusing on two factors affecting onion growth. The purpose was to assess the impact of different sulfur levels S1 = 5, S2=15, S3=25, and S4=35 kgha-1 and potassium levels K1=100, K2=120, K3=140, and K4=160 kg /ha on the nutrient content of N, P, K, and S in onion bulbs was done in Sher-e-Bangla Agricultural University in Dhaka, Bangladesh. The time duration is October 2020 to June 2021.  Based on the observations, it has been found that the bulb showed the highest level of nitrogen when treated with sulfur (5 kg/ha) and potassium (100 kg/ha respectively). In contrast, the lowest nitrogen level has been observed when the bulb was treated with sulfur and potassium (35 &140 kg/ha respectively). Furthermore, the bulb exhibited the highest concentrations of phosphorus (P), potassium (K), and sulfur (S) at a potassium 140 kg/ha and a sulfur 35 kg/ha. Conversely, the lowest values for these parameters were observed when the bulb was treated with the lowest amount of sulfur and potassium.
Serial monitoring of genomic alterations in circulating tumor cells of ER‐positive/HER2‐negative advanced breast cancer: feasibility of precision oncology biomarker detection
Authors: Cani Andi K. , Dolce Emily M. , Darga Elizabeth P. , Hu Kevin , Liu Chia‐Jen , Pierce Jackie , Bradbury Kieran , Kilgour Elaine , Aung Kimberly , Schiavon Gaia , Carroll Danielle , Carr T. Hedley , Klinowska Teresa , Lindemann Justin , Marshall Gayle , Rowlands Vicky , Harrington Elizabeth A. , Barrett J. Carl , Sathiyayogan Nitharsan , Morrow Christopher , Sero Valeria , Armstrong Anne C. , Baird Richard , Hamilton Erika , Im Seock‐Ah , Jhaveri Komal , Patel Manish R. , Dive Caroline , Tomlins Scott A. , Udager Aaron M. , Hayes Daniel F. , Paoletti Costanza
Published: December 2021

Nearly all estrogen receptor (ER)‐positive (POS) metastatic breast cancers become refractory to endocrine (ET) and other therapies, leading to lethal disease presumably due to evolving genomic alterations. Timely monitoring of the molecular events associated with response/progression by serial tissue biopsies is logistically difficult. Use of liquid biopsies, including circulating tumor cells (CTC) and circulating tumor DNA (ctDNA), might provide highly informative, yet easily obtainable, evidence for better precision oncology care. Although ctDNA profiling has been well investigated, the CTC precision oncology genomic landscape and the advantages it may offer over ctDNA in ER‐POS breast cancer remain largely unexplored. Whole‐blood (WB) specimens were collected at serial time points from patients with advanced ER‐POS/HER2‐negative (NEG) advanced breast cancer in a phase I trial of AZD9496, an oral selective ER degrader (SERD) ET. Individual CTC were isolated from WB using tandem CellSearch®/DEPArray™ technologies and genomically profiled by targeted single‐cell DNA next‐generation sequencing (scNGS). High‐quality CTC (n = 123) from 12 patients profiled by scNGS showed 100% concordance with ctDNA detection of driver estrogen receptor α (ESR1) mutations. We developed a novel CTC‐based framework for precision medicine actionability reporting (MI‐CTCseq) that incorporates novel features, such as clonal predominance and zygosity of targetable alterations, both unambiguously identifiable in CTC compared to ctDNA. Thus, we nominated opportunities for targeted therapies in 73% of patients, directed at alterations in phosphatidylinositol‐4,5‐bisphosphate 3‐kinase catalytic subunit alpha (PIK3CA), fibroblast growth factor receptor 2 (FGFR2), and KIT proto‐oncogene, receptor tyrosine kinase (KIT). Intrapatient, inter‐CTC genomic heterogeneity was observed, at times between time points, in subclonal alterations. Our analysis suggests that serial monitoring of the CTC genome is feasible and should enable real‐time tracking of tumor evolution during progression, permitting more combination precision medicine interventions.
Epigenetic priming in chronic liver disease impacts the transcriptional and genetic landscapes of hepatocellular carcinoma
Authors: Gallon John , Coto‐Llerena Mairene , Ercan Caner , Bianco Gaia , Paradiso Viola , Nuciforo Sandro , Taha‐Melitz Stephanie , Meier Marie‐Anne , Boldanova Tujana , Pérez‐del‐Pulgar Sofía , Rodríguez‐Tajes Sergio , von Flüe Markus , Soysal Savas D. , Kollmar Otto , Llovet Josep M. , Villanueva Augusto , Terracciano Luigi M. , Heim Markus H. , Ng Charlotte K. Y. , Piscuoglio Salvatore
Published: December 2021

Hepatocellular carcinomas (HCCs) usually arise from chronic liver disease (CLD). Precancerous cells in chronically inflamed environments may be ‘epigenetically primed’, sensitising them to oncogenic transformation. We investigated whether epigenetic priming in CLD may affect HCC outcomes by influencing the genomic and transcriptomic landscapes of HCC. Analysis of DNA methylation arrays from 10 paired CLD‐HCC identified 339 shared dysregulated CpG sites and 18 shared differentially methylated regions compared with healthy livers. These regions were associated with dysregulated expression of genes with relevance in HCC, including ubiquitin D (UBD), cytochrome P450 family 2 subfamily C member 19 (CYP2C19) and O‐6‐methylguanine‐DNA methyltransferase (MGMT). Methylation changes were recapitulated in an independent cohort of nine paired CLD‐HCC. High CLD methylation score, defined using the 124 dysregulated CpGs in CLD and HCC in both cohorts, was associated with poor survival, increased somatic genetic alterations and TP53 mutations in two independent HCC cohorts. Oncogenic transcriptional and methylation dysregulation is evident in CLD and compounded in HCC. Epigenetic priming in CLD sculpts the transcriptional landscape of HCC and creates an environment favouring the acquisition of genetic alterations, suggesting that the extent of epigenetic priming in CLD could influence disease outcome.
Synthesis and Electrochemical Characterization of La0.6Sr0.4Co0.2Fe0.8O3–δ and BaZr0.8Y0.2O3–δ Electrospun Nanofiber Cathodes for Solid Oxide Fuel Cells
Authors: Chen Si-Heng , Zhang Ting-Ting , Zhu Dong-Yang , Wang Ning , Xu Sheng , Ramakrishna Seeram , Long Yun-Ze
Published: December 2021

The microstructure, elements distribution, and crystallinity of La0.6Sr0.4Co0.2Fe0.8O3–δ (LSCF) and BaZr0.8Y0.2O3–δ (BZY) nanofibers prepared by electrospinning method are systematically characterized. The electrochemical performance of the single cell with the cathode of nanofiber microstructure is tested by compared with the traditional powder materials. The results of electrochemical measurement manifest that the overall performance of the cells is improved greatly by the cathode with nanofibers. At the operating temperature of 700 °C, the peak power density is 1105 mW cm−2 and the polarization resistance is 0.041 Ω cm2, much better than the cells with powder cathode. The nanofiber cathode has excellent permeability and faster charge transfer rate due to its porous network structure, uniform diameter, and small grain size. Three‐phase boundaries and reaction rate in cathode are increased, and thus the stability and electrochemical performance of individual cells are improved. This study not only expands the application of electrospinning in the field of energy, but also provides more methods to prepare high‐quality electrode materials for solid oxide fuel cells (SOFCs).
Electrospun BiFeO3 Nanofibers for Vibrational Energy Harvesting Application
Authors: Ichangi Arun , Lê Khan , Queraltó Albert , Grosch Matthias , Weißing René , Ünlü Feray , Chijioke Amadi Kingsley , Verma Anjneya , Fischer Thomas , Surmenev Roman , Mathur Sanjay
Published: December 2021

Bismuth ferrite (BiFeO3, BFO) has found application in a wide range of fields owing to its fascinating multiferroic properties. Herein, the interplay between the piezoelectric properties and morphology of BFO nanostructures is exploited for vibrational energy harvesting application by tailoring BFO to a high aspect ratio and high surface area nanofiber morphology. This work demonstrates a facile pathway for the fabrication of high‐performance flexible nanogenerators, based on BFO nanofibers, from a cost‐effective and energy‐efficient electrospinning technique. The X‐ray diffraction data of calcined fibers confirm the formation of noncentrosymmetric crystalline perovskite phase. The morphological characterization by scanning electron microscopy shows a compact anisotropic nanofibrous morphology. For the fabrication of nanogenerators, BFO nanofibers are embedded in a piezoactive polymer matrix (polyvinylidenfluoride [PVDF]). As‐fabricated BFO/PVDF composite nanogenerators produce a high peak‐to‐peak voltage output of 7.6 V, with an average output power density of 185 ± 106 nW cm−2 upon periodic application of force through finger knocking.
Evolution of the Microstructures and Properties of Cu‐xCr‐0.4Nb Alloys
Authors: Yang Xiaohong , Zhao Bowen , Zhang Baocha , Cao Fei , Xiao Peng
Published: December 2021

The microstructures and properties of Cu‐xCr‐0.4Nb alloys were investigated by changing Cr composition and cooling mode. The as‐cast microstructures and fracture morphologies were observed by SEM. The morphology and size of the precipitated phase were observed by TEM. The hardness, electrical conductivity, and tensile strength of the resulting alloys were also tested. For Cu‐xCr‐0.4Nb alloys cooled in furnace, Cr2Nb particles were formed near the eutectic regions, and destroy the continuity of the eutectic regions. The Cu–Cr–Nb alloys casted in copper mold can significantly increase the solid solubility of solute elements. The microstructures are finer cellular crystals without the segregation of Cr2Nb particle. It makes the microstructures more homogeneous and greatly improves the hardness. After aging, Cr and Cr2Nb particles with the scale of 5 ≈ 10 nm were precipitated in the copper matrix. The hardness, conductivity and tensile strength can reach to 142HB, 90.52% International Annealed Copper Standard (IACS) and 427 MPa, respectively. In addition, after the alloy being softened, the Cr2Nb particles were found near the Cr particles by TEM, which inhibited the high‐temperature coarsening of precipitated Cr phase. The softening temperature of Cu‐1.0Cr‐0.4Nb alloy reaches 600 °C.
Organic Photovoltaics Integrated with Thermoelectric Generator Achieving Low Critical Temperature Difference and Efficient Energy Conversion
Authors: Liu Wuyue , Sun Shaoming , Zhu Xiaozhang
Published: December 2021

Photovoltaics (PVs, light to electricity) integrated with a thermoelectric generator (TEG, heat to electricity) has been viewed as a promising technique that can achieve high power gain and extend device lifetime, but which have rarely been applied in organic PVs. The critical temperature difference (dTc) is a key parameter because only if the temperature difference (dT) is higher than dTc a power gain can be realized, and dTc is closely associated with device performance and application scenarios. By examining the performance of a simulated PV–TEG integrated device comprising a state‐of‐the‐art organic solar cell and a commercial TEG at various dTs, this dTc is witnessed. An effective numerical simulation method is established to study the PV–TEG integration based on, the dTc can be perfectly reproduced and corresponding optimal p–n leg density for the TEG module to generate the highest power output at a certain dT. Integrated organic PV–TEG (OPV–TEG) devices show a lower dTc than c‐SiPV–TEG devices, which, together with the lower temperature coefficient, are intrinsic advantages of OPVs for future applications. Under AM 1.5G illumination, the 1‐cm2 optimized OPV–TEG integrated device achieves a record energy conversion efficiency of 18.2%.
Dual Photo‐ and Mechanochromisms of Graphitic Carbon Nitride/Polyvinyl Alcohol Film
Authors: Smith Andrew T. , Shen Kuangyu , Hou Zaili , Zeng Songshan , Jin Jing , Ning Chenjun , Zhao Yufei , Sun Luyi
Published: December 2021

An adaptable stimuli responsive system is proposed based on defective graphitic carbon nitride (d‐GCN)/polyvinyl alcohol (PVA) composite attached to different substrates. Nitrogen vacancies, introduced during synthesis via potassium doping, act as internal electron donors to enhance the photoreduction of redox dyes for quick reversible photochromism. This system can be applied as visible light responsive rewritable paper that offers high resolution for printed text, rapid activation/recoloration, multicolor functionality, and high cyclability. The defects also inhibit the d‐GCN particle growth resulting in smaller particle sizes over bulk samples, which enable the formation of transparent mechanochromic films. By altering the PVA/d‐GCN ratio in the composites, two mechanical stimuli responses are introduced by taking advantage of wrinkle and crack formation on the film surface. With a low d‐GCN concentration, mechanical scratching of the film causes the formation of surface wrinkles that alter the film transparency without damaging the film, allowing for text to be written on the surface that can be erased by moisture. With a high d‐GCN concentration, cracks developed on the surface scatter light when stretched, enabling the development of a strain dependent smart window. Both these mechanochromisms can be combined with the photochromism to develop multifunctional smart materials with widespread application.