bluuebunny/crossref_metadata_2025 huggingface dataset:
Pemantauan Kualitas Air dan Kontaminasi Vibrio spp. pada Udang Putih Pasifik (Litopenaeus vannamei) yang Dibudidayakan dengan Sistem Super – Intensif: Studi Kasus di Situbondo, Jawa Timur, Indonesia
Authors: Wiradana Putu Angga , Sani Mayadita Dwi , Sudaryatma Putu Eka , Sandhika I Made Gde Sudyadnyana , Widhiantara I Gede , Rosiana I Wayan , Ansori Arif Nur Muhammad , Firmani Ummul
Published: November 2024

Penyakit yang disebabkan oleh kelompok Vibrio spp. selama program budidaya Litopenaeus vannamei berpotensi menyebar ke perairan melalui perpindahan larva, kontaminasi silang, hingga tingginya padat tebar. Penelitian ini bertujuan untuk menyelidiki kualitas air dan kelimpahan Vibrio spp. pada L. vannamei yang dibudidayakan menggunakan sistem super-intensif. Evaluasi fluktuasi kualitas air dan bakteri Vibrio spp. dilakukan dengan pengukuran parameter kualitas air (suhu, oksigen terlarut, salinitas, nilai pH, dan amoniak) pada media pemeliharaan L. vannamei. Pemeriksaan Vibrio spp. dilakukan pada air pemeliaraan dan tubuh udang L. vannamei dengan mengkultur pada media selektif CHROMAgar serta identifikasi pada kenampakan hepatopankreas. Pemantauan dilakukan mulai dari Days of Culture (DOC) 30 – 150. Hasil penelitian menunjukkan bahwa nilai DO pada pemeliharaan hari ke-150 cenderung mengalami peningkatan, yang diikuti dengan peningkatan nilai suhu dan kadar amoniak secara signifikan dibandingkan dengan usia pemeliharaan 30 hari (p≤0.05). Tidak terdapat perbedaan yang signifikan pada nilai pH dan salinitas pada DOC 30 dan 150. Cemaran Vibrio spp. pada media pemeliharaan cenderung tinggi pada DOC 30, sedangkan cemaran V. parahaemolyticus dan V. cholera cenderung tinggi pada DOC 90 dan 60 pada tubuh L. vannamei. Cemaran Vibrio spp., pada L. vannamei dapat dikaitkan dengan tingginya padat penebaran, berdampak pada penurunan DO dan peningkatan suhu dan amoniak pada system budidaya super-intensif.
Phytoremediation of Mercury and Cyanide Contaminated Soils by Physic Nut (Jatropha curcas L.) and Citronella Grass (Cymbopogon nardus)
Authors: Erusani A. Silvan , Arofah Nurmaya , Azahra Fabika , Nurhasni Nurhasni , Inayah Titik
Published: November 2024

Mercury and cyanide are compounds that have the potential to pollute the environment, both of which are found in the tailing waste of artisanal and small-scale gold mining (ASGM). The purpose of this study was to determine the ability of physic nut (Jatropha curcas L.) and citronella grass (Cymbopogon nardus) to absorb mercury and cyanide in soils polluted with tailings waste based on the value of transfer factors. During this research stage, the remediation of soil polluted with amalgamation tailings and cyanide tailings was carried out for 28 days. Soil sampling was carried out every seven days for 28 days, while root and leaf sampling was carried out on day 28, analysis of mercury and cyanide content in soil and plants using atomic absorption spectroscopy (AAS) and UV-visible spectrophotometer. After 28 days of remediation, mercury and cyanide levels may decrease in soil by 93.7% for mercury and 81.8% for cyanide. The decrease can be caused by absorption and accumulation in plants, where mercury and cyanide accumulate more in physic nut than citronella grass. Physic nut and citronella grass have a transfer factor value of <1 for mercury and cyanide, so they are an excluder plant, except for the accumulation of mercury in physic nut from cyanide tailings soil, which has a transfer factor value of >1, which is an accumulator plant.
Perencanaan Sistem Drainase Berkelanjutan di Daerah Aliran Sungai Cinambo dengan Konsep Low Impact Development
Authors: Sururi Mohamad Rangga , Fadlurrohman Fauzi
Published: November 2024

Daerah Aliran Sungai (DAS) Cinambo terletak di bagian timur Kota Bandung, dengan luas wilayah 17,64 km2. Perkembangan kota telah menyebabkan perubahan tata guna lahan di DAS Cinambo, yang mengakibatkan terjadinya banjir akibat peningkatan limpasan air. Perencanaan sistem drainase model low impact development (LID) dilakukan untuk mengurangi potensi banjir dengan cara menampung dan memanfaatkan air hujan. Tujuan studi ini adalah untuk merencanakan sistem drainase dengan model LID dengan simulasi storm water management model (SWMM) 5.2 menggunakan tiga skenario pengurangan limpasan air, yaitu: (1) sistem drainase tanpa model LID, (2) sistem drainase dengan sistem pemanenan air hujan (PAH), dan (3) sistem drainase dengan sistem PAH dan kolam retensi. Setiap skenario akan dibandingkan dan skenario dengan pengurangan limpasan tertinggi digunakan dalam perencanaan sistem drainase. Berdasarkan hasil kajian, DAS Cinambo menghasilkan rata-rata limpasan sebesar 24.126,85 m3. Hasil simulasi menunjukkan skenario ketiga mengurangi 72% limpasan air yang masuk ke saluran drainase menjadi 6.541,48 m3. Perencanaan skenario ketiga terdiri dari saluran drainase terbuka dengan dengan dimensi 0,4x0,5 meter di jalan lokal dan 1 x1 meter di jalan arteri, disertai PAH sebanyak 10.605 buah berkapasitas 1 m3, dan tiga buah kolam retensi di Kecamatan Gedebage berdimensi 40x30x3 meter berkapasitas 3.600 m3.
Analysis of Sustainability Variables in Revegetation of Ex-Oil and Gas Mining Operation
Authors: Lbs Abdillah , Suwondo Suwondo , Nurhasanah Nurhasanah , Nurhayati Nurhayati , Pramawanti Anita
Published: November 2024

Revegetation after petroleum mining operations is a complex and multifaceted issue that requires careful consideration of sustainability factors to ensure long-term success. PT Pertamina Hulu Rokan has taken its environmental responsibilities seriously and has restored ex-mining land through replanting efforts at ex-well sites, ex-production facilities, and ex-borrow pits. This is important for environmental sustainability, especially after mining oil and gas. This study aims to identify important variables in maintaining the sustainability of revegetation activities at PT Pertamina Hulu Rokan by describing the intensity of influence and interdependence between variables and grouping them from the most influential to the least influential.    Focus group discussions (FGDs) were used to collect data, and the MICMAC approach was used to analyze the relationships between variables. This research has identified 13 ecological, socioeconomic, and conflict mitigation variables that are important in land revegetation activities. Based on the results, the relationships between these variables have been derived by highlighting the key indicators that trigger sustainable revegetation efforts, namely variables such as envreg, amdal, local business development (lbd), and relationship. The lbd variable strongly influences the welfare variable, amdal, and the other variables strongly influence the company's image. Post-mining land revegetation efforts at PT Pertamina Hulu Rokan demonstrate the company's commitment to environmental sustainability. By considering sustainability variables in the revegetation process after petroleum mining operations, PT PHR ensures that its rehabilitation efforts can restore land while promoting sustainable practices and providing benefits to local communities.
Assessment as learning through digital portrayal
Authors: Bevilacqua Alessia , Dell'Erba Cristiana
Published: November 2024

Pre-service teachers are expected to acquire the knowledge, skills, and competencies necessary to enter school effectively at the end of the teacher education program. Given the complexity of the teaching profession and the challenges associated with the induction phase, students should be supported in developing awareness of their exit professional profile. This paper aims to understand the experience of 206 last-year students engaged in an Assessment as Portrayal activity tasked with creating a multimedia representation of themselves as teacher-researchers. A qualitative analysis of the analytical sheets was conducted to understand the characteristics of the teacher-researcher they have acquired as professional posture, the overall benefits they have gained and the influence of educational technologies during the task development. The results highlight how, through Assessment as Learning, students activated self-assessment and metacognitive processes, leading them to develop an awareness of areas of the teaching profession often not considered relevant before, such as reflective and research skills. In this perspective, the approach of Assessment as Portrayal implemented through educational technologies, contributed to elaborating and conveying a unified self-representation as a teacher-researcher. Given the significant cognitive engagement required of students, further studies could explore using artificial intelligence to support students in activating metaphorical thinking.
A flexible wideband wearable CPW antenna for WBAN application
Authors: B. A. Sapna , K. Ramasamy
Published: November 2024

This article presents a wideband wearable antenna with flexible substrate for Body Area Network application. The designed coplanar antenna has a return loss bandwidth of 3.5 GHz ranging from 5.15 GHz to 8.65 GHz with maximum return loss at 5.8 GHz (45.9 dB) and 7.4 GHz (31.4 dB). The average gain of the antenna is 4.069 dB. The obtained specific absorption rate of the antenna is below the FCC reference limit of 1.6 W/Kg per 1 g of tissue, making it suitable for biomedical application.
The Biblical History Play: Turning Seventeenth-Century Joseph Plays into Political Drama
Authors: Wouters Dinah
Published: November 2024

This article examines the shift in popularity from religious to historical and political drama from the late sixteenth century onward, particularly focusing on plays about the patriarch Joseph. The study explores how new historiographical approaches influenced the portrayal of biblical narratives, transforming them to reflect contemporary interests in politics and court life. By analyzing a selection of primarily Jesuit plays, the article demonstrates how the biblical story of Joseph was adapted to align with the baroque fascination for ancient history and the emerging trend of political drama. The shift in Jesuit drama during the baroque period from biblical to more secular subjects is evident in the dramatizations of Joseph’s story, which often incorporate elements of historical exegesis and elaborate depictions of ancient societies, particularly that of Egypt. These plays illustrate how the story of Joseph was recontextualized within a framework of international politics, war, and court intrigue, introducing new characters, plotlines, and subplots. This intermixing of genres reflects a broader tendency in early modern drama to blend sacred and secular elements, resulting in hybrid forms that straddled the line between biblical drama and history plays. The article concludes that this blending not only revitalized biblical drama but also helped bridge the gap between declining religious plays and the rising popularity of political and historical narratives.
Enochs conjecture for cotorsion pairs over recollements of exact categories
Authors: Hu Jiangsheng , Jin Haochen , Tan Zhongsheng , Zhu Haiyan
Published: November 2024

Let

(

A
,
C
,
ℬ

)

\left({\mathcal{A}},{\mathcal{C}},{\mathcal{ {\mathcal B} }})

be a recollement of exact categories. An explicit procedure about gluing complete hereditary cotorsion pairs from

A

{\mathcal{A}}

and

ℬ

{\mathcal{ {\mathcal B} }}

to

C

{\mathcal{C}}

has been established by Hu et al. to provide a new method on the construction of recollements of triangulated categories. In this article, we study when the validity of Enochs conjecture for the left-hand classes of those complete hereditary cotorsion pairs is preserved in the aforementioned gluing procedure. Applications are given to cotorsion pairs induced by the class of projective objects or Gorenstein projective objects over comma categories.
Phytochemical composition and insecticidal activity of Acokanthera oblongifolia (Hochst.) Benth & Hook.f. ex B.D.Jacks. extract on life span and biological aspects of Spodoptera littoralis (Biosd.)
Authors: Khamis Wael , Al-Askar Abdulaziz , Kowalczewski Przemysław , Abdelkhalek Ahmed , Behiry Said
Published: November 2024

Plant extracts with insecticidal properties are promising alternatives to conventional insecticides, which may pose risks to human health and the environment in pest management. In the current study, the methanolic extract of Acokanthera oblongifolia (Hochst.) Benth & Hook.f. ex B.D.Jacks. was characterized using high-performance liquid and gas-mass spectrometry chromatography. High-performance liquid chromatography analysis identified 14 polyphenols, the highest of which is chlorogenic acid (65637.79 µg/g), followed by naringenin and pyrocatechol at 2022.98 and 1509.11 µg/g, respectively. However, quercetin, gallic acid, ferulic acid, rutin, and kaempferol showed moderate quantities. The gas chromatography–mass spectrometry analysis identified the major polysaccharide, inositol (15.52%), followed by squalene and triterpene (11.02%) out of 35 polysaccharides. The major fatty acids, 11-octadecenoic acid, methyl ester, and methyl 9-cis, 11-trans-octadecadienoate, were 9.06 and 6.30%, respectively. The crude extract and chlorfluazuron 5% EC at LC15 were evaluated for the life table and biological aspects of S. littoralis (Boisd.) neonates after 48 h under laboratory conditions compared to the control. The toxicity of the LC15 at 48 h of chlorfluazuron 5% EC (0.31 mg/L) excelled the extract (178.95 mg/L) on the neonates. Life span tests showed that the larval longevity of the extract and chlorfluazuron colonies were 27.34 and 30 days, respectively. The control colony completed its life span at 38.66 days, whereas the extract colony ended at the pupae stage at 33.67 days. Biological aspects showed that the tested compounds decreased pupation percentages and weight. Pupae malformations caused by the extract (80.56%) outperformed chlorfluazuron (33.33%). The adult emergency decreased by the extract (0.33%), and no emergency was observed in chlorfluazuron colony. Ultimately, A. oblongifolia extract demonstrated significant life table elongations and developmental impairment, which may suggest potential and eco-friendly use for its prospective commercial preparations in controlling S. littoralis alternatively to chlorfluazuron 5% EC.
Der magisch-realistische Erinnerungsraum der „Wiedergewonnenen Gebiete“ in der Prosa von Maria Sidorska-Ryczkowska
Authors: Dylewska Agnieszka
Published: November 2024

This article focuses on the literary construction of the ‘Recovered Territories’ on the basis of the novel Station on the East and West (2004) and the compilation of short stories Keys to the River (2013) written by Maria Sidorska-Ryczkowska. The setting within the poetics of the magical realism leads as the main characteristic of the two chosen texts. The literary creation of the small town on the Polish-German border, which is portrayed both as the microcosmic piece of a bigger entity and as the unique tablet inscribed by the history of the Polish and German nations, is the base of both texts. The intertwined relationship between the magical realism as the literary strategy and the categories of memory and remembering is a significant theme presented in the texts. The aforementioned theme transports the portrayal of the small town depicted by Sidorska-Ryczkowska into the memory space that combines realistic and magical features.
A Study of Russian-Belarusian Border Dialects: The Use of the Genitive Case Ending -u in the Khislavichi Dialect
Authors: Ryko Anastasiia
Published: November 2024

This article explores the features of noun declension in the Khislavichi dialect, focusing on the use of the genitive case ending -u. The study is based on data from the Khislavichi Corpus, which consists of texts recorded from native speakers in the western part of the Khislavichi district of the Smolensk Region during field trips in 2018–2019. The linguistic situation in this area is characterized by the Russification of genetically Belarusian dialects. The analysis examines the preservation of dialect features, the historical and contemporary usage of the genitive case in Russian and Belarusian, and the specificities of the genitive ending -u in the Khislavichi dialect. The findings indicate that the Khislavichi dialect employs the -u ending in the genitive case for a larger number of lexemes compared to standard Russian. This raises the question of whether these "extra" -u forms can be linked to the previous Belarusian system. The study explores the variability found in the usage of both the -u and -a endings, suggesting that their selection may be contingent upon the intended meaning and the age of the speaker. Additionally, the article contributes to the development of a broader theoretical problem: the transition from one idiom to another, and ultimately the theory of language change. This research adds to our understanding of dialectal variation and the mechanisms of language change, particularly in regions experiencing language contact and assimilation processes.
Scalar markers between aspect and modality: The case of Lithuanian be-
Authors: Holvoet Axel
Published: November 2024

The present article proposes an analysis of a subset of functions of the Lithuanian verbal prefix be-, one of a small group of prefixes performing functions usually characteristic of particles rather than prefixes, such as those of focus, phasal and scalar markers. They have correspondingly been called ‘particle-like prefixes’ in Lithuanian grammar. While in its aspectual use be- is mainly progressive in modern Lithuanian, its original function was phasal (continuative), and it is this meaning that extended to scalar meanings. The article focuses on the variety of functions this scalar be- has acquired in grammar, and the ways in which it has become a marker of various constructional meanings that can be characterized as modal. More generally, it shows the importance of the Lithuanian data in elucidating the role of scalarity as a mediator between aspect and modality.
„Nun haben wir zu beginnen.“
Authors: Piberger Jirko
Published: November 2024

Bildungsforschung wird gemeinhin entweder als Kompetenzmessung oder als Rekonstruktion einer individuellen Krisenbewältigung verstanden. Mit der Indienstnahme von Blochs Arbeiten zum Utopischen und einer Bestimmung des unhintergehbar utopischen Gehalts im Bildungsbegriff wird zugunsten einer bildungstheoretisch orientierten und bildungstheoretisch differenzierten Bildungsforschung argumentiert, die den Spagat wagt zwischen einer sozialwissenschaftlich verorteten und empirischer Forschung verpflichteten Erziehungswissenschaft und dem (grund-)begrifflichen Erbe einer geisteswissenschaftlichen Pädagogik.
The efficacy of high pressure liquid chromatography (HPLC) in detecting congenital glycosylation disorders (CDG)
Authors: Ozgen Ozge , Güdek Kılıç Fatma , Gedikbaşı Asuman , Balcı Mehmet Cihan , Karaca Meryem , Durmuş Aslı , Tutu Belkıs , Körbeyli Hüseyin Kutay , Atalar Fatmahan , Gökçay Gülden Fatma
Published: November 2024

Objectives

Congenital disorders of glycosylation (CDG) are a family of rare inherited metabolic disorders. This study aimed to examine the carbohydrate-deficient transferrin (CDT) screening results of 1,328 patients with suspected CDG by using transferrin-high pressure liquid chromatography (Tf-HPLC) method and to evaluate the performance of the method as a reference diagnostic tool.

Methods

Relative CDT levels (CDT concentrations expressed as percent of total transferrin) were determined in serum samples by HPLC. The method sensitivity, specificity and positive predictive value (PPV) were further calculated.

Results

Abnormal transferrin isoform profile consistent with CDG Type-I and CDG Type-II were determined in 50 cases; in 44 cases asiolo-Tf (7.63 ± 5.44 %) and disialo-Tf (36.29 ± 9.04 %), in six cases monosialo-Tf (3.95 ± 0.95 %) and trisialo-Tf (25.05 ± 4.46 %) were determined and decreased tetrasialo-Tf (49.75 ± 11.59 %) was identified in all cases. Two cases having abnormal CDT pattern were molecularly diagnosed with hereditary fructose intolerance and galactosemia and 11 cases diagnosed with CDG based on clinical and molecular analysis showed a normal pattern. The sensitivity, specificity and positive predictive values of Tf-HPLC method were 81.96 %, 99% and 96 %, respectively.

Conclusions

Tf-HPLC is a useful, highly sensitive, cost-advantageous and reliable method for the detection and preliminary diagnosis of CDG for laboratories working with large sample series.
Presentación
Authors: Lynch Gamero Nicolás
Published: November 2024

El presente número representa una transición importante para nuestra revista Discursos del Sur. De presentarnos en versión digital e impresa a lo largo de estos años, pasamos a presentarnos únicamente en versión digital, siempre en la plataforma de revistas académicas de nuestra Universidad Nacional Mayor de San Marcos. Esta transición es expresión de nuestra creciente integración al mundo de las revistas académicas en el planeta, que migran en un número muy importante al formato digital para tener una mejor presentación y una mayor difusión de nuestros contenidos. Esperamos de esta manera mejorar la calidad de nuestro producto y continuar siendo una herramienta al servicio de la investigación y el debate académico de las ciencias sociales.
Protestas en 280 caracteres: el ciberactivismo femenino en Twitter durante la movilización social contra el Gobierno peruano de Manuel Merino #MerinoNoEsMiPresidente
Authors: Saldaña Paucar Katherine , Angulo-Giraldo Miguel
Published: November 2024

Este estudio analiza el ciberactivismo de las mujeres peruanas que protagonizaron la movilización social más grande en el siglo XXI. Se presenta una discusión teórica que aborda el ciberactivismo desde las dimensiones de los actores sociales, la participación e interacción de estos, así como la relación entre lo online y lo offline en las movilizaciones sociales. Se examinan más de 55 mil tuits —del 10 al 15 de noviembre del 2020— de 201 usuarias, y se analizan entrevistas a 10 actores participantes. Los resultados muestran la destacada participación de las mujeres, aunque con menor influencia que los hombres; la inmediatez y alcance de Twitter para el activismo, y la complementariedad entre actividades online y offline. Se concluye que Twitter funcionó como plataforma de interacción social y política para la convocatoria y la organización de la movilización.
El problema de las bases de datos en la evaluación de la producción científica en América Latina. Una exploración del potencial de OpenAlex para las universidades argentinas
Authors: Gallardo Osvaldo , Bruccoleri Ochoa Manuel
Published: November 2024

En este artículo se analiza la cobertura de OpenAlex y Scopus de las publicaciones científicas de autores/as de Argentina, tanto para el país completo como para un conjunto de 10 universidades nacionales seleccionadas, en el período 2019-2023. El objetivo es comparar el desempeño de ambas bases de datos en cuanto a volumen global de publicaciones indexadas, idiomas y áreas disciplinares. Los resultados arrojan que la cobertura de OpenAlex es más amplia y diversa, en particular para las publicaciones en español, en ciencias sociales y humanidades y con un único autor o autora. También se observa que la cobertura de OpenAlex es particularmente relevante para las universidades de menor tamaño y para los artículos con colaboración nacional o de autoría individual, modalidades tradicionalmente poco representadas en las bases de datos bibliométricos tradicionales. Estos resultados son particularmente relevantes en un contexto de ataque a la ciencia producida en Argentina de parte del Gobierno federal electo en el 2023 y del corte al acceso a Scopus como fuente para la investigación científica.
Las políticas globales y las realidades locales y regionales del acceso abierto: el Plan S y Latinoamérica
Authors: Godínez-Larios Sheila , Aguado-López Eduardo
Published: November 2024

This paper examines the tension between current global policies and the local and regional realities of open access that, while differing in their approaches, aim to open scientific knowledge. Specifically, we compare Plan S and cOAlition S, a European born policy with global aspirations, to the traditional dissemination of science of the Latin American publishing system, highlighting the disagreements that challenge regional and local communication principles, sovereignty, and horizons. In that regard, three conflicts are outlined: 1) the publishing framework developed by read and publish agreements has led to a few companies gaining central relevance and the institutionalization of article processing or publishing charges; 2) the risk of outsourcing of key research processes such as peer review, now conceptualized as a service, endangers scientific rigor, its sustainability, and its purpose; 3) the adoption of non-restrictive licenses such as CC BY allows subsequent commercialization of research results, exacerbated by strategies promoting the use of preprints under this license. We conclude that while read and publish agreements consolidated a commercial strategy under new discourses of openness, new guidelines fail to propose viable, feasible, and sustainable strategies for the academic community and, even further, divert of the central aspect of equity pursued by the discourse of Plan S and cOAlition S.
Dependencia y biodiversidad: desafíos de la implementación de economías circulares y bioeconomías en las latitudes del sur
Authors: Catalan Duran Patricia Isabel
Published: November 2024

El cambio climático, plantea desafíos a las latitudes del sur. La apuesta por nuevos modelos económicos que contraríen hábitos de consumo insostenibles; lleva a reconsiderar la relación de un desarrollo económico sostenible, con iniciativas incipientes en las latitudes del sur, en consideración de la implementación de economías circulares y bioeconomías; sin embargo, dichas iniciativas no deben ignorar las realidades sociales, culturales e históricas latinoamericanas, realidades que apelan a un contexto dependiente y multicultural, en el cual se presentan caminos posibles para el desarrollo de economías circulares y bioeconomías.
Apartheid climático en el desarrollo: reflexiones desde la (in)justicia socioambiental de las poblaciones negras de Nigeria
Authors: Chávez Aguilar Maria Fernanda
Published: November 2024

The idea of development articulated by the project of capitalist-colonial-heteropatriarchal modernity has necessarily implied violence, dispossession, subjugation and, in short, underdevelopment of the human and non-human lives that shape Nigeria. In the face of climate change, accelerated by activities based on human and non-human relations of exploitation and domination, which threatens the idea of development, various experts have focused on adaptation and mitigation actions, seeking to reduce the levels of greenhouse gases responsible for climate change and thereby slow the pace and severity of climate-related impacts. However, these responses continue to reproduce systems of discrimination, segregation and displacement by attempting to adapt to the climate crisis while safeguarding the dominant economic and socio-political structures that caused it. This is what is causing climate apartheid. The aim of this text is to analyze the implications of the development project, from the differentiated impacts of anthropogenic climate change, particularly for populations in Nigeria, understanding the complex articulations of racism in the context of socio-environmental crisis itself, especially taking up the supposed solutions given to the latter.
La producción del espacio logístico global: flujos comerciales, seguridad y militarización
Authors: Montes Santoyo Alan Alberto
Published: November 2024

El presente trabajo tiene como objetivo partir de consideraciones teórico conceptuales de la geografía política y económica que buscan dar una explicación otra a la disciplina y práctica de la logística en el ámbito comercial internacional. A través de una revisión histórico-documental, la discusión trata de resaltar el papel de un proceso conocido como “revolución logística”, surgido tras la segunda posguerra y que empujó una serie de transformaciones que coadyuvaron a la producción de una espacialidad integrada bajo una razón logística en diferentes escalas geográficas. Además, busca dar cuenta del nexo existente entre el proceso de militarización global que se ha intensificado en los últimos años a partir de la reestructuración de la geografía del capitalismo neoliberal, conduciendo a la reconceptualización de la seguridad y a su ejercicio.
La economía socialista no estatista: revisión histórica de las diversas propuestas de cooperativismo, autogestión y empresas sociales en el socialismo no estatal
Authors: Kamichi Miyashiro Manuel Jose
Published: November 2024

The present work shows the economic proposal of important representatives of socialism, where the defense for communal property, cooperatives and social enterprises stands out, all framed within a self-management system; thus moving away from a statist economy. In addition, it is evident that Marx was a critic of the State, for which reason he did not defend a state economy, but rather one based on cooperatives connected in a Great Union exemplified in the Paris Commune, and his proposal for a State was a proletarian one, of participatory and democratic type, very far from statist dictatorships that have falsely used his name as a source of inspiration, and that instead of having implanted a socialist model they executed a state capitalism. Finally, the compatibility of social enterprises with the characteristics of socialism is shown, in which the success of the self-managed socialist model of Yugoslavia when it was governed by Josip Broz Tito, an authentically socialist model, where its economy was based in social enterprises and the self-management of their workers, is seen.
Informe: Proyecto de Responsabilidad Social Universitaria - Escuela Abierta de Sociales, UNMSM 2023
Authors: Salas Gonzales Jesús Gerardo
Published: November 2024

El Proyecto Escuela Abierta de Sociales es una iniciativa de extensión universitaria que se enmarca en el enfoque de Responsabilidad Social Universitaria. A través de una convocatoria abierta, se invita a presentar propuestas académicas que serán impartidas de forma gratuita al público en general. El objetivo principal de este proyecto es democratizar el acceso al conocimiento en el campo de las ciencias sociales y, a mediano plazo, establecer sinergias entre los participantes para desarrollar proyectos de incidencia en sus organizaciones y territorios. El presente informe tiene como finalidad reflexionar sobre el desarrollo del Proyecto Escuela Abierta de Sociales. Se busca analizar los desafíos y oportunidades relacionadas con la implementación de actividades de capacitación teórico-práctica en el ámbito universitario. Así proporcionar una reflexión crítica sobre los avances, desafíos y oportunidades relacionadas con la implementación de este proyecto, y ofrecer recomendaciones para fortalecer su alcance y eficacia.
Capacidad de anclaje de los split sets en función de su longitud efectiva de anclaje
Authors: Giraldo Paredez Emiliano Mauro
Published: November 2024

The support in underground excavations is essential to preserve the life and health of the workers, damage to the equipment and to have proper progress of the excavation. The most common Rock support sets are the rock bolts, temporary or definitive. Among temporary rock bolts, there are the Split sets, widespread around the world due to their ease of installation and cheaper. Split Sets, have the appearance of a tube with a 15 mm slot in its entire length, manufacturers and suppliers recommended 38 mm diameter of drill holes and depths according to their length. In this research, the ground and holes were simulated with a special table and steel tubes. Split Sets, were conditioned to make anchors of 1, 2, 3, and 4 feet of bond length. Prepared the simulator tubes and Split Sets were installed, after which, were performed the pull test of the 3 samples for each bond length to determine their anchor capacity. Peak loads for each length researched were recorded in formats designed for this purpose. Compiling the recorded values and adjusting them according to certification of pressure gauge calibration carried out in UNI, obtained the anchor capacity for each of length tested. Results that have been captured in a table and graph, where is inferred that the anchor capacity of the Split Sets is affected by its bond length, and that do not have a relationship. Maximum bond length of anchorage tends to 4 feet, i.e., it is unnecessary to use greater lengths.
Impacto del Dren 4000 al Ecosistema Marino de la Caleta Santa Rosa, Lambayeque y Alternativas de Recuperación
Authors: Nizama Pacheco Lizveth Karín , Cabrera Carranza Carlos Francisco
Published: November 2024

The objective was to identify the environmental impacts generated by the Drain 4000 of the Caleta Santa Rosa, due to its high contamination as a result of industrial activities; it presents environmental problems that we must solve.The Maximum Permissible Limits for Effluents (LMP), issued by the Ministry of the Environment for domestic and municipal wastewater treatment plants, the Maximum Permissible Limits (LMP) for the fishmeal and fish oil industry, issued by the Ministry were applied. Of the production; and for marine waters, the National Environmental Quality Standards (ECA), giving high levels of pollution. The number of total and thermotolerant coliforms, total suspended solids and BOD5 (Biochemical Oxygen Demand) exceed the maximum permissible limits and the values established in the national environmental quality standards, causing a negative impact on the marine ecosystem. Therefore, it has been proposed recovery alternatives, among the most important: Implementation of a registry of volumes of disembarkation of the resources coming from the operations of the fish processing companies, monthly reports to the General Directorates of Fishing Extraction and Processing and Monitoring, Control and Surveillance, and the proposal of a relocation project of the oxidation lagoon, among others.
Impacto Ambiental del Sistema de Alcantarillado en la Ciudadela «3 de mayo» de la Ciudad de Jipijapa - Ecuador
Authors: Osejos Merino Miguel Ángel , Merino Conforme Martín Verisimo , Merino Conforme Monserrate Cristina
Published: November 2024

This research was carried out in the town “May 3” with a population of 7,906 inhabitants, its climate is tropical dry with a temperature of 24 ° C, its habits and customs are rooted in cultural, historical and folkloric aspects, belongs to The urban town Dr. Miguel Moran Lucio from the city of Jipijapa in the province of Manabí, where the environmental impact of the sewage system was identified from a decade ago in the citadel “May 3”, for which they were used Information collection tools such as: environmental application sheets, observation guide and survey form. With the application of these instruments the following results were obtained: the sewage system is in the final stage of service to the community, it is to collapse due to the time it has of construction and operation. The components that are affected by the sewer system are the abiotic, biotic and socioeconomic, with their respective components: air, soil, water, flora, fauna and human activities. From these components, environmental factors were determined: such as air, soil and water quality, vegetation cover and species of fauna, quality of life and well-being, health and safety. The amount of impacts found were 10, which are temporary. The significance level impacts showed a result of 19.5, which is considered moderate, the environmental component most affected and the agent or the activity that caused it: having to the conclusion that this component is the social and taken for daily living.
Evaluación del riesgo de contaminación por metales pesados (Hg y Pb) en sedimentos marinos del Estero Huaylá, Puerto Bolívar, Ecuador
Authors: González Víctor , Valle Sonia , Nirchio Mauro , Olivero Jesús , Tejeda Lesly , Valdelamar Juan , Pesantes Fredis , González Katherine
Published: November 2024

The study of mercury content in marine sediments is presented in nine sampling stations of Estero Huaylá in Puerto Bolívar (Ecuador), by means of spectrophotometry of atomic absorption with flame nebulization and with the generation of hydrides with atomization in a quartz cell. The ecological risk assessment was determined by calculating the pollution factor (fi) and the potential ecological risk index (IREP) at each sampling point. The result obtained, for each metal, was compared with the values of the existing sediment quality guide: CEL (Concentration with limit effect) and CEP (Concentration with probable effect). The results show that the mercury concentration was high in all stations with a minimum of 0.89 and a maximum of 5.79 μg/g, while for the values between 0.04 and 0.09 plomo were obtained μg/g. With respect to toxicological risk, mercury and lead concentration values exceeded the CEL limit value and some mercury values also exceeded the CEP value indicating that mercury more than lead represents a toxicological risk for biota in the sediments of the estuary Huaylá. With respect to the value of the pollution factor, all the points were diagnosed as highly contaminated by mercury, while for the lead, no significant concentrations were detected with the quantification method used. The potential ecological risk index, considering mercury, revealed three highly contaminated sites, five heavily polluted and one moderately polluted. In contrast, for lead, all sampling points are below the allowed limits. The points with the highest concentration of mercury and the highest risk of contamination were those located near the fertilizer and lime distribution companies for shrimp farms and near gas stations. In conclusion, the Huaylá estuary has high concentrations of mercury in its sediments, probably due to the outflow of water from the gold mining activity in the area that is transferred by the intertidal currents from the Santa Rosa estuary to the Huaylá estuary. The urgent need to establish reference values in the Ecuadorian environmental standard is highlighted because it does not contemplate mercury limits for marine and / or freshwater sediments.
Análisis Geoestadistico Multivariable para identificación de anomalía del oro, Ayahuanca – Puno
Authors: Chuquiruna Chávez Wilder , Chira Fernandez Jorge Eduardo
Published: November 2024

The investigation work has analyzed the efficiency of geostatistical tools in surface geochemical samples of rock to determine geochemical anomalies of gold. A total of 5799 samples were evaluated, with an analysis of 53 elements by the atomic absorption spectrometry method; the present work a geostatistical analysis was carried out mainly for Cu, Pb, Zn, As, Ba and Au. This determined the spatial distribution of the gold anomalies, simple and crossed variograms were calculated in the direction of the anisotropy.
Evaluación de la actividad de reciclaje en Lima Norte
Authors: Huiman Cruz Alberto
Published: November 2024

In order to evaluate the recycling activity of materials in North Lima, the following were applied: (1) surveys, using the probabilistic sampling method with the simple random type for all the actors of the recycling pyramid, and (2) interviews with open and simple type to the authorities and actors of the recycling chain (in the period between January 2015 and December 2016). It was determined that the product that demands the greatest interest of the productive chain of local recycling is plastic for its cost and quantity, the other elements complement recycling. The results allowed to determine who receives the highest income is the exporter PEN 6,850.00, and throughout the recycling chain the local governments of North Lima and the actors of the recycling chain do not develop a joint work by: Resistance of insertion of public policies within the framework of existing regulations, lack of data and information, there is sectoral disorganization, disobedience to authority prevails and supervision, oversight and sanctions are lacking. In conclusion, there is a gap in environmental assessment, mainly in plastic because the participation system in recycling does not depend on economic incentives causing a decrease in the market, the polluter-pays principle is not applied, and there is informality in the development of activity. Therefore, the sustainability of the recycling activity in Lima North will be possible as long as it coexists: Articulation of development.
Producción de lixiviados, comparación del método de tchobanoglous con experimentos en lisímetros
Authors: Buchwald de Janon Federico Von , Martínez Neira Pablo Fausto
Published: November 2024

Sanitary landfills are the most widely used methods to dispose urban solid waste, its greatest environmental impact is generated by leachate, and there is a generalized criterion that when there are no rains, leachate is not generated. The book Integral Management of solid waste by Tchobanoglous is the greater reference of urban solid waste management and has a procedure for the calculation of leachate production, this was implemented considering a single layer without rainwater influence, which was compared with experimental results of lysimeters with different residue components combinations, finding coincidences in combinations with low content of organic matter but differences in compositions with high contents of organic matter.
Análisis de los peligros hidrometeorológico y caída de roca en la ciudad de Pucalá y CP Huaca Rajada y Sipán
Authors: Allende Ccahuana Teófilo
Published: November 2024

The objective of the research is to develop an analysis of the hydrometeorological and rockfall hazards that impact the city of Pucalá and the populated centers of Huaca Rajada and Sipán, based on multi-criteria evaluation (MCE) techniques, where the variables of the susceptibility of the territory and the evaluation parameters for fluvial flooding, flooding, debris flow and rockfall hazards are identified. In addition, a matrix is used to assign weightings according to the relative importance of each variable and its descriptors with respect to the probability of increasing hazard levels. The variables and descriptors correspond to information obtained from sources of public and private entities and from field observations where the lithology, morphology and slope variables were validated as conditioning factors of the hazards, and with data from the Sipán station, maximum precipitation is obtained as a triggering factor. The hazard is related to a critical scenario for pluvial flooding (flooding) that presents maximum precipitation thresholds and affects the city of Pucalá, and another for fluvial flooding where there are sectors with exposure due to the overflowing of the Chancay River and irrigation canals. Meanwhile, the critical scenarios for rockfall and debris flow hazards occur in sectors where there are unstable conditions on the slopes of hills and mountains of Caballo Blanco hill and affect the local road that connects with other towns, and in sectors of alluvial-torrential material deposition where the town of Sipán is located.
Diseño geotécnico para la explotación subterránea de caserones en vetas angostas
Authors: Ramos Armijos Nelson Jesús , Calderón Celis Julia Marilú , Ramos Armijos Diego Geovanny
Published: November 2024

Los yacimientos minerales en Ecuador están asociados a vetas angostas cuya roca encajonante se encuentra influenciada por juntas y tensiones que son fuentes de debilidad, lo cual debe ser estudiado para una explotación subterránea segura. Por lo tanto, el objetivo de esta investigación es elaborar el diseño geotécnico para el minado subterráneo de un caserón en veta angosta. Para ello, se caracterizó al macizo rocoso a través de clasificaciones geomecánicas y su estabilidad mediante el Gráfico de Mathews. Se examinó el estado tensional, desplazamientos y factor de seguridad utilizando criterios de rotura y el software RS2; adicionalmente, se diseñó el sostenimiento según la calidad del macizo rocoso y secuencia de minado. Los resultados indican que el tamaño máximo del caserón es 54m de altura, 1.75m de ancho, 79m de longitud; y el sostenimiento diseñado ha estabilizado las galerías. También, los resultados revelan que las juntas controlan la distribución de tensiones provocando su disminución y deterioro en la resistencia del macizo rocoso; mientras que, la estabilidad del caserón disminuye al aumentar su profundidad, en cambio, el espesor de la zona plástica aumenta con dicho incremento y el desplazamiento no está influenciado por la profundidad.
Diseño de minado y análisis de estabilidad para la explotación subterránea del yacimiento Hilarión en Ancash
Authors: Vargas Olarte Jorge Luis
Published: November 2024

La investigación tiene como objetivo diseñar la mina subterránea del yacimiento mineralizado de 'Hilarión' y mostrar las condiciones de estabilidad de las excavaciones proyectadas en las estructuras mineralizadas irregulares de Zn-Pb-Ag, emplazadas en el contacto de la secuencia calcárea de la formación Pariatambo, con intrusivos del yacimiento 'Hilarión' de 1,6 km de longitud y 500 m de profundidad. Las condiciones geológicas y geomecánicas del macizo rocoso, de calidad Buena (BII), permitieron la elección de 'Sub Level Stoping Longitudinal' y el 'Bench and Fill Stoping' como métodos de explotación. Para ello, se definen los criterios y parámetros del diseño geomecánico y posteriormente las dimensiones de las Unidades Básicas de Explotación (UBEs).
Actividad antimicrobiana in vitro de pastas 3MIX-MP y CTZ contra el Enterococcus faecalis ATCC® 29212
Authors: Vargas-Mendoza Jesús Antonio , Mamani-Quispe Rosini Alicia , Mercado-Portal Jorge Luis , Aguilar-Vilca Abel Josue , Padilla-Cáceres Tania Carola
Published: November 2024

Objective. To determine the antibacterial effect of triantibiotic paste (3MIX-MP) and chloramphenicol-tetracycline-ZOE (CTZ) antibiotic paste at 24, 48, 72 hours and 7 days on Enterococcus faecalis. Methods. Experimental, in vitro, comparative study, with a non-probabilistic sample for convenience of 210 paper discs, distributed in 30 Petri dishes previously prepared with Mitis Salivarius agar and Mueller Hinton agar and inoculated with strains of Enterococcus faecalis ATCC® 29212. The method was used. Kirby-Bauer, inoculated with a 0.5 McFarland suspension of Enterococcus faecalis. Filter paper discs were placed inside the wells and 10 µl of antimicrobial pastes and control were supplied. The positive control was zinc oxide-eugenol cement discs; halo diameters were measured with a vernier caliper. A repeated measures ANOVA was used for intragroup comparisons, one-way ANOVA for intergroup comparisons, and Tukey’s post hoc tests. Results. After 24 hours, the 3MIX-MP paste obtained larger inhibition zone diameters than the CTZ paste with an average of 39,24 mm and 34,19 mm, respectively, and a minimum of 36,26 mm and 26,38 mm at 24 hours. 7 days. Statistically significant differences were observed between the halos obtained from the 3MIX-MP paste and the CTZ paste, except for the control after 48 hours. Conclusions. It was determined that the 3MIX-MP paste has a greater inhibitory action in vitro compared to the CTZ paste, the diameter of the inhibitory halos decreased as the exposure time to the microorganism increased.