bluuebunny/crossref_metadata_2025 huggingface dataset:
Design and Engineering of Nitrogen Receiver
Authors: Atharva Chavan  , Krishnaji Gawade  , Ketan Baing  , Vikram Bait  , Prof. Rushikesh Rasal
Published: June 2024

Within numerous industrial applications, pressurized nitrogen gas plays a critical role. Nitrogen receiver pressure vessels function as the secure storage tanks for this gas, guaranteeing its safe and on-demand availability. These vessels are constructed from high-strength steel in accordance with ASME Boiler and Pressure Vessel Code (BPVC) standards. This ensures they can withstand the internal pressure of the contained nitrogen. ASME BPVC, a comprehensive set of rules, dictates the design, fabrication, inspection, and testing of pressure vessels. By adhering to these stringent standards, manufacturers guarantee the safety and reliability of these vessels. In conclusion, nitrogen receiver pressure vessels, designed and built following ASME standards, are an integral part of industrial gas storage and distribution. Their ability to safely store pressurized nitrogen in compliance with strict safety regulations makes them essential for various processes across numerous industries
Analysis of Emergency Provision in Indian Constitution in Relation with 1975 Emergency
Authors: Shruti Gyanchand Pal
Published: June 2024

The 1975 Emergency in India represents a defining moment in the country's history, marked by the invocation of Emergency Provisions enshrined in the Indian Constitution. These provisions, particularly Article 352, granted the ruling government extraordinary powers to address perceived internal disturbances and maintain national security. However, the declaration and implementation of the Emergency have been subjects of intense debate and scrutiny, with critics highlighting the period as a time of political repression, suspension of civil liberties, and authoritarian governance.
This study explores the aims and objectives of the 1975 Emergency, delving into the motivations of the ruling dispensation and the extent to which the Emergency Provisions were used beyond their stated intent. By examining primary sources, historical accounts, and scholarly analyses, the research critically assesses the impact of the Emergency on Indian democracy, including its effects on democratic institutions, civil society, and political culture
Autoeficacia del docente de Educación Física para la inclusión del alumnado con necesidades educativas: una revisión sistemática
Authors: Meneses Villalobos Mauricio Axel , Rivas Díaz Felipe
Published: June 2024

Objetivo: Analizar las actitudes y/o los niveles de autoeficacia para la inclusión del alumnado con necesidades educativas (NE) en docentes o futuros docentes de Educación Física. Métodos: Se realizó una búsqueda sistemática desde 2019 hasta 2023, mediante la ecuación (Physical education AND self-efficacy AND inclusion) en las bases de datos Scopus y Web of Science, arrojando un total de 63 artículos los cuales fueron analizados mediante las directrices PRISMA, seleccionando un total de 8 artículos posterior a los criterios de inclusión. Resultados: Los resultados indican que, en general, la autoeficacia de los y las docentes hacia estudiantes en situación de discapacidad son moderadamente positivas. Además, la noción de autoeficacia es mayor cuando se trata de incluir al alumnado en situación de discapacidad intelectual en comparación a la motriz y auditiva. Conclusión: se evidencia que los y las docentes se autoperciben como competentes para la inclusión de los estudiantes en Educación Física y que, además, existe una variabilidad en los niveles de autoeficacia de los profesores, siendo más alta al incluir al alumnado con discapacidades intelectuales y más baja al incluir al alumnado con discapacidades físicas.
Gardenia (Rubiaceae) seed conservation physiology with emphasis on rare Hawaiian species
Authors: Opgenorth Mike , Sailing Emily , Rønsted Nina , Wolkis Dustin
Published: June 2024

Background and aims – Gardenia species are ecologically, culturally, and economically significant but the three native species of Gardenia in Hawai‘i are assessed as Critically Endangered. Seed banking is the most cost effective and efficient means of conserving plant material ex situ. To better understand the conservation physiology of Hawaiian and South Pacific Gardenia spp. and support their conservation, we asked 1) How do seeds respond to different temperatures and light and dark regimes? 2) What class of dormancy, if any, do seeds exhibit? 3) How does seed germinability respond over time in a seed bank? and 4) What is the conservation status and level of ex situ representation of Gardenia globally?

Material and methods – To answer these questions, we used 19 accessions of fresh seeds and seeds stored for varying periods of time in the National Tropical Botanical Garden’s Conservation Seed Bank and Laboratory of Hawaiian (G. brighamii, G. remyi), New Caledonian (G. aubryi, G. oudiepe), and Tahitian (G. taitensis) species. Seeds were incubated at varying temperatures and in light, and in dark.

Key results – We found that (1) seeds of all species tested germinated slowly and only at higher temperatures in the light and dark, (2) seeds have non-deep physiological dormancy, (3) seeds of the Hawaiian species are short lived at conventional seed bank conditions, and (4) only 40% of Gardenia spp. are represented in ex situ facilities, and 66% of the species have not been evaluated for the IUCN Red List.

Conclusion – Seeds of Hawaiian Gardenia spp. are short lived in storage. Since seeds germinate in darkness, they are unlikely to form a persistent soil seedbank. Although seeds of all species tested are physiologically dormant, they can be easily propagated from seed at warmer temperatures, giving some hope to the conservation and restoration of the Critically Endangered Hawaiian species. Since our dataset was limited by a lack of continuous viability monitoring, we emphasize the need for initial germination testing and ongoing viability tests to better understand seed longevity. Lastly, we discuss the ecological relevance of our results in the context of the Hawaiian archipelago.
Perceived Threats Of Artificial Intelligence On The Academic Retention And Critical Thinking Of Business Education Undergraduates In Public Universities In Anambra State
Authors: Alonta Gabriel Chidiebere , Onwubuya Uju Nkiru , Onwuamaeme Reginald Ozichukwu
Published: June 2024

This study investigates the perceived threats posed by artificial intelligence (AI) on the academic retention and critical thinking of business education undergraduates in public universities within Anambra State. Employing a descriptive survey design, the research focuses on a population of 724 individuals. The sample consists of 206 business education students spanning years 1-4 from both Nnamdi Azikiwe University, Awka, and Chukwuemeka Odumegwu Ojukwu University, Igbariam. A total of 109 business education students were selected from Nnamdi Azikiwe University, Awka, while 97 were chosen from Chukwuemeka Odumegwu Ojukwu University, Igbariam, using stratified random sampling technique. The study was guided by two research questions, and data were collected using a structured questionnaire. Validation of the research instrument was conducted by three experts. Mean scores and standard deviation were utilized to analyze the research questions. The findings reveal a significant perceived threat of artificial intelligence on the academic retention and critical thinking of business education undergraduates in public universities within Anambra State. Recommendations include advocating for controlled usage of artificial intelligence to facilitate student academic retention and emphasizing the importance of students’-controlled use of AI to mitigate potential negative impacts on academic performance.
The Bridge To Acceptance: Investigating Consumer Perceptions of Virtual Bankers
Authors: Okafor Ekwunife Gabriel , Chukwudi I. Njelita,
Published: June 2024

Electronic banking technology advancements have resulted in new methods to process banking transactions, particularly through online banking channels. Virtual bankers are still in their early stages in Nigeria and are not being used as a significant cost-cutting tool for banks or to improve customer relationships. Using the technology acceptance model (TAM), this study will investigate the adoption of virtual bankers by customers of selected banks in Anambra State. The model was tested with a survey sample of 323 people, employing the survey research method as the research design, and simple linear regression to analyze the data. The study findings show that perceived usefulness and perceived ease of use have a positive and significant impact on virtual banker adoption. The study suggests that financial institutions adopt and deploy virtual banker platforms to enable seamless transactions and quick responses to task completion, as well as to improve job performance and overall output within the organization. Additionally, the study recommends that, for effective deployment and adoption of a virtual banker, financial institutions provide learning platforms that will ease the process and ensure that actual and prospective customers become proficient with the use and working processes of the virtual banker. The provision of learning platforms will encourage more consumers to get on board and adopt virtual bankers. Finally, the study suggests that virtual banker platforms and software should be continuously improved. This improvement aims to make them easier to use, faster in responding to consumer needs, and more innovative in addressing the anticipated and ever-growing needs of existing and future customers.
CRISE DA COVID 19 E O SETOR VAREJISTA BRASILEIRO: UMA ANÁLISE DOS RELATÓRIOS DE GESTÃO E EVOLUÇÕES EMPRESARIAIS DE 2017 A 2022
Authors: Moldes Ana Keila Andrade , Costa André Ricardo Reis
Published: June 2024

Este artigo visa “Crise da Covid 19 e o Setor Varejista Brasileiro: Uma Análise dos Relatórios de Gestão e Evolução empresariais de 2017 a 2022”. O tema é de grande relevância, considerando que a problemática afeta diretamente as famílias brasileiras e sua qualidade de vida. O objetivo principal desta pesquisa é examinar e quantificar o impacto da pandemia no setor varejista brasileiro, avaliando a lucratividade das empresas comerciais varejistas durante este período. Como objetivo secundário, propõe-se analisar, dentre as quatro empresas selecionadas, qual demonstrou melhor desempenho financeiro em tempos de pandemia Quanto à metodologia, foi realizada uma pesquisa nos sites oficiais das empresas selecionadas, a fim de extrair informações contábeis e financeiras entre os anos de 2017 e 2022. Adicionalmente, a pesquisa se estendeu a artigos e trabalhos acadêmicos com temáticas similares. Em relação à aplicabilidade dos dados, optou-se pela organização das informações em índices, representados em modelos gráficos, para ilustrar de maneira mais detalhada os resultados obtidos. Durante o desenvolvimento, foram apresentados fundamentos teóricos das pesquisas que serviram de base para este estudo. Por fim, através da análise dos resultados, este artigo apresenta as conclusões finais e propõe questionamentos para futuras pesquisas sobre outras variáveis que possam influenciar este setor tão dinâmico que é o comércio varejista.
RELATO DE EXPERIÊNCIA EM ESTÁGIO SUPERVISIONADO DE PSICOLOGIA ESCOLAR COM ALUNOS DE INCLUSÃO NO ENSINO REGULAR MÉDIO/ TÉCNICO DA REDE ESTADUAL DE EDUCAÇÃO DE CURITIBA - PARANÁ
Authors: Gouvêa Poliane Lagner de Silveira de , Machado Regina Maria , Silva Diego da
Published: June 2024

O trabalho em questão é uma narrativa sobre a experiência vivenciada durante o estágio supervisionado de observação em psicologia escolar com alunos de inclusão no curso de Psicologia. Essa experiência ocorreu no ano de 2024, em uma escola pública da rede estadual localizada em Curitiba, Paraná. Durante esse período, foi observada a rotina de aulas realizadas por alunos com apoio de TEA nível I e II e TOD, alunos estes do primeiro ano do ensino médio técnico em administração e logística, com o objetivo de destacar a importância do desenvolvimento de valores, das relações sociais e da responsabilidade no processo de ensino-aprendizado com estas neurodivergências. O foco central dos trabalhos era incentivar a integração dos dos alunos em relação à sua própria educação, destacando a relevância deles para a experiência acadêmica. A fundamentação teórica foi baseada em conceitos relacionados à atuação do psicólogo escolar (FREIRE, 1997; HERCULANO,2016; VIANA 2006,2016) estabelecendo uma conexão com a Teoria Histórico-Cultural (VIGOTSKI, 1991,2009) em conjunto com (PRESTES, TUNES, 2018; REGO, 1995), sobre a importância das experiências e interações com o ambiente para o desenvolvimento, com as adaptações necessárias para os alunos portadores dos transtornos indicados. As observações possibilitaram prever, como os alunos desempenharam papéis ativos nas atividades em sala, e quais as dificuldades enfrentadas diárias por eles, em suas rotinas, decorrentes de suas limitações, em comparação aos demais alunos. Por meio das experiências oferecidas, surgiram reflexões e relatos acerca de comportamentos e conceitos que impactam de maneira favorável ou desfavorável no desenvolvimento cognitivo desses indivíduos.
A IMPORTÂNCIA DO DIAGNÓSTICO PRECOCE NO TRANSTORNO DO ESPECTRO DO AUTISMO: REVISÃO NARRATIVA
Authors: Lima Ketlyn Silva de , Moreira Pamela da Silva , Rodrigues Irami Pereira , Silva Paula Oliveira
Published: June 2024

Este estudo aborda a importância do diagnóstico precoce do Transtorno do Espectro do Autismo (TEA). O objetivo é revisar artigos que apresentam estratégias e métodos de diagnóstico precoce para o TEA. A metodologia utilizada é uma revisão bibliográfica narrativa, que inclui a busca e análise de artigos científicos, livros e legislações pertinentes, utilizando descritores específicos relacionados ao diagnóstico precoce do TEA. Os resultados indicam que a detecção precoce é essencial para implementar intervenções eficazes, como terapias comportamentais e educacionais, que podem melhorar significativamente o desenvolvimento e a qualidade de vida das crianças com TEA. A conclusão destaca a necessidade de uma avaliação abrangente e individualizada para garantir um diagnóstico preciso e intervenções oportunas.
HISTÓRICO DOS DIREITOS HUMANOS NO MUNDO E NO BRASIL
Authors: Cintra Edenilda da Silva , França Mhardoqueu Geraldo Lima
Published: June 2024

O presente artigo trata sobre o limiar histórico dos direitos humanos, sua propagação e suas modificações ao longo do tempo. O texto tenta reunir a exposição de fatos históricos e doutrinas que apontam a evolução dos direitos humanos. Busca-se também como objetivo central visualizar como se deu o surgimento dos direitos humanos com base na literatura especializada, traçar fatos históricos em ordem cronológica que foram fundamentais para o estabelecimento atual dos direitos humanos, discutir os movimentos sociais que deram origem a tais direitos, apresentar breves comentários e, subsidiariamente, tentar conceituar os direitos humanos e apontar características próprias a eles. O método usado foi o bibliográfico com fonte em textos digitais e físicos, visto que é extensa a publicação acerca do tema em comento. Concluiu-se que grande parte dos movimentos de expansão dos direitos humanos foram precedidos por eventos trágicos, onde os direitos naturais mínimos foram violados.
Les télomères : unité et diversité du vivant
Authors: ALBERTI Patrizia
Published: June 2024

Ce chapitre passe en revue l’histoire de la découverte des télomères et donne un aperçu de leurs caractéristiques, des ciliés aux autres eucaryotes. L’objectif est de montrer comment les télomères chez les eucaryotes partagent des aspects communs modulés par des aspects spécifiques à l’espèce, fournissant un exemple fascinant de l’unité et de la diversité de la vie.
Les télomères et le cancer
Authors: LONDOÑO-VALLEJO Arturo
Published: June 2024

L’instabilité chromosomique, très fréquente dans les cellules tumorales, contribue directement à la progression cancéreuse. Ce chapitre traite du rôle des télomères dans cette instabilité, qui pourrait contribuer à la progression tumorale, et de la façon dont ces derniers sont impliqués dans l’immortalisation des cellules cancéreuses. Le potentiel thérapeutique du ciblage des télomères et/ou de leur métabolisme est aussi discuté.
Organisation et dynamique nucléaire des télomères de mammifères en 3D
Authors: STINUS Sonia , CRABBE Laure
Published: June 2024

L’organisation de la chromatine dans le noyau influence d'importants processus biologiques. Ce chapitre décrit l’organisation de l’enveloppe nucléaire (EN), qui joue un rôle clé dans l’organisation du noyau, et les travaux qui soutiennent son interaction physique avec les télomères. Cette dernière se révèle importante pour l’architecture nucléaire, l’organisation temporelle de la réplication, la mitose et la dynamique des télomères.
Gestion du stress réplicatif aux télomères
Authors: COULON Stéphane
Published: June 2024

Les télomères contiennent des longues séquences répétées qui sont difficiles à répliquer. Il est connu désormais que les protéines télomériques participent et facilitent la réplication de ces séquences répétées. Ce chapitre présente les différents mécanismes moléculaires identifiés qui limitent le stress réplicatif aux télomères, impliquant les protéines télomériques et leurs facteurs associés.
Évolution et fonctions des télomères
Authors: LONDOÑO-VALLEJO Arturo
Published: June 2024

Les télomères sont des structures très dynamiques mais en même temps extrêmement bien conservées, essentielles pour la protection des extrémités chromosomiques. La longueur étant un paramètre essentiel de leur fonction de protection, le raccourcissement télomérique lié à l’âge ou au dysfonctionnement des mécanismes de maintenance (réplication, activité télomérase) ont un impact direct sur l’aptitude des cellules et organismes à survivre. Ce chapitre aborde plusieurs aspects fondamentaux de la biologie des télomères, notamment chez l’homme.
Méthodes de nettoyage novatrices
Authors: DALLAGI Heni , KUMAR JHA Piyush , FAILLE Christine , BÉNÉZECH Thierry
Published: June 2024

La valeur potentielle de diverses méthodes innovantes de nettoyage est discutée. Les stratégies présentées font référence aussi bien à l’action mécanique que l’action chimique du nettoyage. Les technologies les plus prometteuses sont mises en avant vers une meilleure l’élimination de la biomasse encrassante dans le contexte actuel de réduction de l’empreinte environnementale de ces opérations.
Désinfection des surfaces : nouvelles approches
Authors: OLIVEIRA sabel , FERNANDES Susana , SIMÕES Manuel , GOMES Inês B.
Published: June 2024

Les nouvelles approches visant à améliorer l’efficacité de la désinfection sont présentées. Il s’agit de nouveaux désinfectants, de nouvelles stratégies d’application des désinfectants, de nanotechnologies ou encore de surfaces autodésinfectantes, afin de pallier l’échec de l’utilisation de produits chimiques et des méthodes conventionnelles. Parmi les nouvelles approches qui ont émergé, il y a la recherche non seulement de nouvelles molécules antimicrobiennes et antibiofilms, ce qui est tout à fait conventionnel, mais aussi de méthodes pour empêcher l’augmentation de la résistance aux antimicrobiens tout en offrant une alternative de désinfection durable.
La sécurité des aliments dans les chaînes d’approvisionnement
Authors: MAUERMANN Marc , BOYE Andre , HESSE Max , FUCHS Enrico , MURCEK Roman , EISENRAUCH Vincent , KLAEGER Tilman , YIN Jialiang
Published: June 2024

Les problèmes de sécurité alimentaire lors du transport, dus à des contaminations physiques et chimiques et de la croissance de micro-organismes nuisibles dans les denrées alimentaires périssables sont détaillés. Sans un nettoyage approprié entre les chargements et une conception hygiénique des conteneurs, le risque de contamination croisée est considérablement accru.
Recherche des contaminations bactériennes de surface en industrie agroalimentaire
Authors: BRAUGE Thomas , FAILLE Christine , MIDELET Graziella
Published: June 2024

Les méthodes commerciales disponibles pour la détection des contaminations microbiennes des surfaces dans l’industrie agro-alimentaire sont détaillées. Ces méthodes de contrôle de la contamination de surface consistent en la détection et/ou énumération des micro-organismes pathogènes et non-pathogènes prélevés dans l’environnement des usines de transformation des aliments.
Perspectives historiques
Authors: LAMOUREUX-VAR Violaine , BOUTON Nicolas , BAUDIN François
Published: June 2024

Ce chapitre rappelle les conditions de l’invention du Rock-Eval® dans les années 1970 et retrace cinquante ans de recherche et d’innovation autour de cet analyseur. Inventé par et pour la géochimie pétrolière, le Rock-Eval® y est devenu rapidement une méthode de référence, avant de conquérir des secteurs comme la paléoclimatologie, la pédologie, mais aussi l’industrie cimentière et celle des catalyseurs.
Paramètres et illustration des résultats
Authors: CÉCILLON Lauric , BARRÉ Pierre , BENOIT Yves , COPARD Yoann , ROMERO-SARMIENTO Maria-Fernanda
Published: June 2024

A partir des thermogrammes issus de l’analyse Rock-Eval®, quels paramètres peuvent être obtenus et pour quels usages ? Ce chapitre décrit les principaux paramètres Rock-Eval® et les graphiques utilisés en géochimie pétrolière et pour l’analyse de la matière organique des sols.
Étude des matières organiques des sédiments récents
Authors: COPARD Yoann , BAUDIN François
Published: June 2024

Ce chapitre présente un panorama des apports de la méthode Rock-Eval® appliquée à l’étude des sédiments récents dans différents environnements : continentaux, lacustres, côtiers ou marins profonds. L’utilisation du Rock-Eval® pour caractériser des composés organiques purs ou pour suivre le devenir des contaminants métalliques ou organiques est également présentée.
L’Europe, région à géographie variable
Authors: RICHARD Yann
Published: June 2024

Ce chapitre explore trois hypothèses. La régionalisation du monde dessine une réalité macrorégionale plus vaste que l’Europe continent. Les limites extérieures de l’Union européenne sont aussi incertaines que celles de l’Europe car l’Union européenne se construit en se projetant au-delà d’elle-même. Les modalités de la construction européenne font surgir ou ressurgir ici et là quelques lignes de clivage qui ont la vie dure, à l’intérieur du continent.
A global surface CO2 flux dataset (2015–2022) inferred from OCO-2 retrievals using the GONGGA inversion system
Authors: Jin Zhe , Tian Xiangjun , Wang Yilong , Zhang Hongqin , Zhao Min , Wang Tao , Ding Jinzhi , Piao Shilong
Published: June 2024

Abstract. Accurate assessment of the size and distribution of carbon dioxide (CO2) sources and sinks is important for efforts to understand the carbon cycle and support policy decisions regarding climate mitigation actions. Satellite retrievals of the column-averaged dry-air mole fractions of CO2 (XCO2) have been widely used to infer spatial and temporal variations in carbon fluxes through atmospheric inversion techniques. In this study, we present a global spatially resolved terrestrial and ocean carbon flux dataset for 2015–2022. The dataset was generated by the Global ObservatioN-based system for monitoring Greenhouse GAses (GONGGA) atmospheric inversion system through the assimilation of Orbiting Carbon Observatory-2 (OCO-2) XCO2 retrievals. We describe the carbon budget, interannual variability, and seasonal cycle for the global scale and a set of TransCom regions. The 8-year mean net biosphere exchange and ocean carbon fluxes were −2.22 ± 0.75 and −2.32 ± 0.18 Pg C yr−1, absorbing approximately 23 % and 24 % of contemporary fossil fuel CO2 emissions, respectively. The annual mean global atmospheric CO2 growth rate was 5.17 ± 0.68 Pg C yr−1, which is consistent with the National Oceanic and Atmospheric Administration (NOAA) measurement (5.24 ± 0.59 Pg C yr−1). Europe has the largest terrestrial sink among the 11 TransCom land regions, followed by Boreal Asia and Temperate Asia. The dataset was evaluated by comparing posterior CO2 simulations with Total Carbon Column Observing Network (TCCON) retrievals as well as Observation Package (ObsPack) surface flask observations and aircraft observations. Compared with CO2 simulations using the unoptimized fluxes, the bias and root mean square error (RMSE) in posterior CO2 simulations were largely reduced across the full range of locations, confirming that the GONGGA system improves the estimates of spatial and temporal variations in carbon fluxes by assimilating OCO-2 XCO2 data. This dataset will improve the broader understanding of global carbon cycle dynamics and their response to climate change. The dataset can be accessed at https://doi.org/10.5281/zenodo.8368846 (Jin et al., 2023a).
Operation and maintenance cost comparison between 15 MW direct-drive and medium-speed offshore wind turbines
Authors: Donnelly Orla , Anderson Fraser , Carroll James
Published: June 2024

Abstract. Determining offshore wind energy operational expenditures relies on acquiring reliability data, particularly as turbine power ratings increase. The uncertainty surrounding operational costs and optimal drivetrain configurations for larger turbines persists. While previous research has addressed reliability data for 3 MW offshore wind turbines, this study reviews and collates updated failure data for 15 MW turbines, comparing direct-drive and medium-speed configurations. It employs an operation and maintenance (O&M) modelling tool to calculate total operational costs. The study concurs with existing literature, showing that direct-drive turbines have lower operational costs than medium-speed turbines in three case studies. However, the cost and availability differences between configurations are smaller than previously suggested. For 15 MW turbines, the analysis reveals that the cost disparity between direct-drive and medium-speed turbines is significantly smaller than for smaller-rated turbines, with percentages of 1.59 %, 1.58 %, and 5.78 % for the three ScotWind sites selected. Previously, the absolute percentage difference in cost between direct-drive and medium-speed turbines was estimated to be 29.79 %. Sensitivity analyses explore the influence of three factors – failure rates, accessibility limits, and major replacement times – on total operational costs. These analyses demonstrate that medium-speed configurations exhibit more significant cost fluctuations, and the cost gap between configurations is reduced if failure rates are lowered at the same rate for each configuration, accessibility increases, or the major replacement time is reduced for the larger wind turbine components.
PENGARUH PEMBERIAN PAKAN ALAMI CACING Tubifex sp. TERHADAP PERTAMBAHAN PANJANG DAN BOBOT IKAN ZEBRA (Branchyndanio rerio)
Authors: Pratama Asep Rachmat
Published: June 2024

One of the ornamental fishes which has a fairly good development prospect is zebra fish (Branchyndanio rerio). In the maintenance of zebra fish is needed special treatment in handling the fish larvae. The purpose of this study was to determine the effect of natural feeding on the Tubifex sp. silkworm to increase the length and weight of zebra fish larvae. This study contained 2 treatments, namely treatment A (feeding pellets in the morning and evening) and treatment B (feeding the Tubifex sp. silkworm in the morning and evening). Each treatment was carried out with 3 replications. Pellet feed and Tubifex sp. silkworm were given each ad libitum for 30 days. The results of this study showed that the percentage of fish seed increase in treatment B experienced a significant increase rather than just given pellet feed (Treatment A). For 30 days, the natural feeding of the Tubifex sp. in the morning and evening, fish larvae experienced a length increase of 13.78% and weight of 106.48%. This result is very different from fish larvae which were only given pellet feed in the morning and evening, which is only 12.31% for their weight and their length is fixed. The conclusion of this study is the natural feeding of Tubifex sp. have a significant effect on the length and weight of zebra fish larvae
Analysis of Environmentally Semi Trammel Net based on Code of Conduct Responsibilities Fisheries (CCRF) in Cirebon Waters
Authors: Al Bayyinah Auliya , Devi Nurkhasanah  , Elinah
Published: June 2024

All fishing actors are required to use environmentally friendly fishing gear. The aim is to maintain the condition of fishery resources and their habitat, as well as to maintain the safety of fishermen and consumers. The research was conducted in February - April and August - September 2020 in Cirebon Regency, West Java Province. The research objective was to determine the status of the shrimp nets used by fishermen in Cirebon waters. The research method used is the survey method. Data analysis using weighting method on 9 criteria for environmentally friendly fishing gear based on Code 0f Conduct Responsibilities Fisheries (CCRF). Based on the research results, the semi trammel net used by Cirebon fishermen are included in the environmentally friendly fishing gear category with a score of 30.54.
PROFIL KESIAPAN BELAJAR SISWA PASCA PANDEMI DI SMP NEGERI 1 KERTASEMAYA
Authors: Wirya Erhan Angga , Herawati Endang Sri Budi , Asiyah Dewi Asiyah
Published: June 2024

Penelitian ini bertujuan untuk mendeskripsikan profil kesiapan belajar siswa SMPN 1 Kertasemaya pasca pandemic Covid 19. Kesiapan belajar ini diukur menggunakan indikator: kondisi fisik, kondisi mental, kondisi emosional, kebutuhan terhadap belajar, pengetahuan, motif, dan tujuan. Penelitian ini merupakan penelitian deskriptif kuantitatif dengan populasi siswa kelas VII sebanyak 237 siswa. Sample diambil menggunakan metode simple random sampling dan jumlahnya ditentukan berdasarkan rumus slovin, sehingga diperoleh 70 orang siswa. Pengumpulan data menggunakan angket dan wawancara dengan key informan guru bimbingan konseling, wali kelas, dan guru matapelajaran yang dipilih secara random pula. Hasil penelitian menunjukkan bahwa pasca pandemic siswa cenderung tidak siap untuk belajar kembali di kelas. Hal ini dapat dipahami karena selama hampir 4 semester, siswa belajar secara daring/belajar jarak jauh baik melalui penugasan maupun melalui whatssapps grup. Secara umum kondisi fisik siswa juga perlu diperhatikan, mereka cenderung mudah sakit, lesu, dan sering mengantuk di kelas. Secara psikologis/mental, siswa juga belum mampu menyesuaikan diri untuk kembali belajar di kelas, cenderung merasa terpaksa, gelisah, da terkekang ketika kembali melaksanakan pembelajaran tatap muka. Perlu adanya upaya untuk meningkatkan kembali kesiapan belajar siswa dan pembiasaan baru pasca pandemic, sehingga siswa dapat mengikuti pembelajaran dengan baik.
PENGARUH METODE DEMONSTRASI MELALUI PENDEKATAN QUANTUM LEARNING TERHADAP PRESTASI BELAJAR SISWA PADA POKOK BAHASAN GERAK LURUS BERUBAH BERATURAN KELAS X SMA NEGERI 1 KARANGWARENG KABUPATEN CIREBON
Authors: Widianingsih Estu , Sentosa Mohamad Rendi Astono , Faizah
Published: June 2024

Tujuan dalam penelitian ini yaitu : 1) mengetahui analisis prestasi belajar siswa sebelum dan sesudah mengikuti pembelajaran fisika menggunakan metode demonstrasi melalui pendekatan quantum learning, 2) mengetahui pengaruh metode demonstrasi melalui pendekatan quantum learning terhadap prestasi belajar siswa. Populasi dalam penelitian ini adalah seluruh siswa kelas X SMAN 1 Karangwareng kabupaten Cirebon tahun ajaran 2016/2017 yang terdiri dari 9 kelas. Sampel penelitian berjumlah satu kelas yang diambil menggunakan teknik purposive sampling yaitu kelas X MIPA 1 sebagai kelompok eksperimen yang berjumlah 43 siswa. Metode yang digunakan dalam penelitian ini adalah metode quasi experiment. Data empiris didapatkan melalui studi di lapangan dengan menggunakan teknik tes, wawancara, dan dokumentasi. Analisis data yang digunakan yaitu : 1) uji instrumen antara lain: validitas, reliabilitas, tingkat kesukaran dan daya pembeda, 2) uji prasyarat antara lain : normalitas, homogenitas, dan 3) uji hipotesis. Kesimpulan dari hasil penelitian ini yaitu: 1) analisis prestasi belajar siswa sesudah mengikuti pembelajaran fisika lebih besar dibandingkan sebelum mengikuti pembelajaran fisika menggunakan metode demonstrasi melalui pendekatan quantum learning, 2) pengaruh metode demonstrasi melalui pendekatan quantum learning dalam pembelajaran terhadap prestasi belajar siswa kelas X MIPA 1 SMA Negeri 1 Karangwareng Kabupaten Cirebon dapat dilihat dari hasil uji hipotesis yang menunjukkan nilai t-hitung= 16,297 dan nilai t-tabel= 1,68 (t-hitung>t-tabel) artinya metode demonstrasi melalui pendekatan quantum learning berpengaruh terhadap pokok bahasan gerak lurus berubah beraturan mata pelajaran fisika kelas X MIPA 1 SMA Negeri 1 Karangwareng
Inovasi Diversifikasi Olahan Hasil Laut Pada Siswa Sekolah Menengah Kejuruan Maritim Cirebon
Authors: Novianti Teni
Published: June 2024

Sekolah Menengah Kejuruan Maritim Cirebon merupakan salah satu sekolah kejuruan dibidang perikanan dan kelautan.  Menurut hasil pengamatan yang dilakukan oleh peneliti, permasalahan mendasar yaitu hasil praktek siswa masih terbatas pada olahan berbahan dasar ikan dan belum terdapat label pada kemasan produknya.  Tujuan penelitian ini yaitu untuk mengetahui tingkat pengetahuan dan keterampilan siswa dalam melakukan inovasi diversifikasi hasil laut produk olahan udang beku (frozen breaded shrimp) di SMK Maritim Cirebon.  Metode penelitian yang dilakukan dengan cara pelatihan partisipatif yang melibatkan siswa dan siswi program studi keahlian Teknologi Pengolahan Hasil Perikanan Kelas XII SMK Maritim Cirebon sebanyak 18 orang akan mengikuti persiapan ujian kompetensi keahlian.  Melalui kegiatan inovasi dan diversifikasi hasil laut dapat meningkatkan pengetahuan dan keterampilan siswa terhadap produk olahan udang breaded beku.  Terjadi peningkatan aspek pengetahuan sebesar 42,47% dan terjadi peningkatan pada aspek keterampilan siswa terhadap diversifikasi olahan udang beku mencapai 68,7 % dengan kriteria terampil sebanyak 11 responden (61,11%) serta kriteria cukup terampil sebanyak 7 responden (38,89%).
Peningkatan Aktivitas Belajar Siswa melalui Penerapan Model Pembelajaran Kooperatif Pelajaran Fisika SMA N 1 Penukal
Authors: Arif Muhammad
Published: June 2024

Perkembangan teknologi dan globalisasi berdampak secara tidak langsung terhadap dunia pendidikan. Seiring dengan hal tersebut, para pendidik perlu terus berinovasi untuk memastikan peserta didik mencapai potensi yang dimiliki. Untuk mencapai hasil yang optimal dalam pembelajaran fisika, diperlukan strategi pembelajaran yang efektif dan menarik. Salah satu model pembelajaran yang telah banyak digunakan dan terbukti efektif adalah model pembelajaran kooperatif. Penelitian ini dilakukan di SMA Negeri 1 Penukal. Jenis Peneitian ini adalah penelitian tindakan kelas yang terdiri atas 2 siklus dengan subjek penelitian adalah siswa kelas X yang berjumlah 38 siswa pada semester 1 Tahun Pelajaran 2021/2022. Model pembelajaran yang digunakan adalah model pembelajaran kooperatif dengan metode tutor sebaya. Data dikumpulkan dengan tes kemampuan pemecahan masalah, lembar observasi pembelajaran dan lembar aktivitas siswa. Teknik analisa data menggunakan rumus teknik proporsi. Hasil penelitian menunjukkan bahwa pada siklus I sampai pada siklus II model pembelajaran kooperatif dengan metode tutor sebaya dapat meningkatkan aktivitas belajar peserta didik. Pada siklus I menunjukkan terjadi peningkatan secara signifikan dengan rata-rata aktivitas positif 35,5% dan penurunan pada aktivitas negatif sebesar – 18,9%. Dengan adanya peningkatan aktivitas positif ini berdampak pada peningkatan hasil belajar peserta didik sebesar 5,4 dan persentase peningkatan ketuntasan klasikal sebesar 15%.
Efektivitas Media Pembelajaran Berbasis Video Animasi terhadap Hasil Belajar Siswa di SMA Negeri 5 Kendari
Authors: Melati Melati , Zainuddin Zainuddin , Lamote Hasrin
Published: June 2024

Penelitian ini menggunakan pendekatan kuantitatif dengan jenis penelitian eksperimen. Subjek penelitian adalah kelas XI IPA 4 sebagai kelas eksperimen sebanyak 33 orang siswa dan kelas XI IPA 3 sebagai kelas kontrol sebanyak 35 orang. Instrumen penelitian yang digunakan berupa tes hasil belajar siswa.Uji hipotesis dilakukan dengan menggunakan uji Independent Sampale t Test dengan uji prasyarat yaitu uji normalitas dan uji homogenitas. Hasil penelitian menunjukkan bahwa 1) penerapan pembelajaran melalui pemanfaatan media pembelajaran Fisika berbasis video animasi terlaksana secara efektif. 2) Tidak terdapat perbedaan hasil belajar Fisika antara kelas eksperimen dan kelas kontrol dengan hasil uji-t diperoleh nilai thitung = 0,592 > ttabel = 2,000 3) Terdapat perbedaan hasil belajar Fisika pada kelas eksperimen dan kelas kontrol sebelum dan sesudah perlakuan pembelajaran di SMA 5 Negeri Kendari. Hasil pengujian  hipotesis pada kelas eksperimen sebelum dan sesudah perlakuan pembelajaran diperoleh nilai thitung = 3,257 > ttabel = 2,000 dan hasil pengujian  hipotesis pada kelas eksperimen sebelum dan sesudah perlakuan pembelajaran diperoleh nilai thitung = 8,204 > ttabel = 2,000. 4) Terdapat perbedaan antara hasil belajar Fisika kelas eksperimen dan kelas kontrol sesudah perlakuan pembelajaran di SMA Negeri 5 Kendari dengan perolehan nilai thitung = 4,350 > ttabel = 2,000.
Prevalence and sensitivity of contagious and environmental cow mastitis-causing pathogens to antibiotics in Ukrainian farms
Authors: Zaritskyi Ruslan , Zhuk Yurii , Dreval Denys , Kovpak Vitalii , Masalovych Yurii , Cheverda Ivan , Derkach Iryna , Savchuk Taras
Published: June 2024

Mastitis is considered the most common and problematic disease, resulting in significant economic losses due to reduced milk yields, reduced quantity and quality of milk, treatment costs, and premature culling of animals. One of the traditional methods of treating mastitis in cows is using antibiotics, which leads to the emergence of polyresistant strains of microorganisms, the so-called Superbugs. The emergence of Superbugs, which are not sensitive to most existing antibiotics, is a major concern in veterinary and humane medicine. This study aimed to identify pathogens isolated from the secretion of the mammary gland of cows with mastitis to determine their spread and sensitivity to antibiotics. The samples of secretion from the udder were examined by bacteriological method. The isolates were identified by conventional methods and by the modern method – mass spectrometry (MALDI-TOF MS). The sensitivity of the bacterial isolates to antibiotics was determined by the disc diffusion method (Kirby-Bauer). The results of studies of cow mammary gland secretion samples indicate that 49.2% of the isolates are contagious, and 50.8% are environmental ones. The most common among the isolates of mastitis-causing pathogens were Streptoccocus аgalactiae – 16.9%, Streptococcus uberis – 10.9%, Staphylococcus aureus – 10.7%, E. Coli – 9.6%, Corynebacterium bovis – 7.3%, Staphylococcus haemolyticus – 4.8%, Staphylococcus chromogenes – 3.6%, Streptococcus dysgalactiae – 3.4%. Mastitis is caused by algae and yeast – 1% of all detected pathogens, respectively. According to the results of the determination of the sensitivity of isolates of mastitis-causing pathogens to antibiotics, it was found that most isolates were sensitive to Amoxicillin, Ceftiofur, and Rifampicin, and least of them – to Neomycin, Tylosin, Tilmicosin, Bacitracin.
Analysis of the composition of selected emollients dedicated to atopic skin
Authors: Wojtas Dominika , Rogalska Marta
Published: June 2024

Atopic dermatitis is a chronic inflammatory disease with complex genetic, environmental and immunological background. An important aspect of treating the lesions is restoring the proper functioning of the epidermal barrier, and the recommended skin care products are emollients. The aim of this study was to analyze the composition of selected eighty cosmetics (including creams, lotions, emulsions and shampoos) intended for people with atopic dermatitis, which were available in pharmacies and online drugstores. Knowledge of the preparations is crucial because inadequate composition can exacerbate the symptoms of dermatosis. It is essential that the products used contain numerous active substances and are free from ingredients that can negatively affect the altered skin.
Powdered polydioxanone – synthetic polymer that stimulates formation of collagen in aging skin
Authors: Gemza Krzysztof , Surgiel-Gemza Agnieszka
Published: June 2024

The body’s natural ageing process is characterised by a decrease in skin volume and the development of deeper wrinkles. Fillers derived from cross-linked hyaluronic acid are commonly used in aesthetic medicine procedures, however they are frequently overused. Current investigations are underway to new solutions that can be utilised in therapies aimed at regenerating damaged tissues and enhancing the appearance of the skin. Collagen stimulators, which include both type I and type III, consist of amino acids, fragmented uncrosslinked hyaluronic acid, biomimetic peptides, polynucleotides, and polymers. The above compounds serve as alternatives to crosslinked hyaluronic acid. This study aimed to introduce powdered polydioxanone containing microspheres as a product that promotes the production of collagen. This synthetic polymer can be used by patients seeking to rejuvenate facial skin by restoring its tone, density, and natural volume. Due to its hydrophilic properties, immune neutrality, and ability to degrade into water and carbon dioxide, powdered polydioxanone seems to be a safe option for aesthetic medicine procedures.
An Assessment of the Waste Management Practices of the *Atlantic Beef Abattoir
Authors:   University of Guyana, Roberts Kenita , Franklin-Lynch Melinda ,   University of Guyana, Overton Rennard ,   University of Guyana
Published: June 2024

This research was conducted at the *Atlantic Beef Abattoir, with the objectives of understanding the process of slaughtering and identifying the potential sources of waste generation; comparing the waste management practices of the studied abattoir to international best practices; and identifying the challenges of waste management at the Atlantic beef abattoir.
An Investigation of the Effectiveness of Three Cow-dung based Herbal Mosquito Repellents
Authors:   University of Guyana, Sukhu Casey , Charles, PhD Elroy ,   University of Guyana, Perreira Sanasha ,   University of Guyana
Published: June 2024

Individual repellents were prepared for the various herbal treatments: Azadirachta indica (Neem) leaves, Ocimum tenuiflorum (Tulsi) leaves and Cymbopogon (Lemongrass) leaves in combination with the control treatment and molded into the shape of incense sticks. The experiment was carried out in triplicate tests to investigate the effectiveness in repellency, stunted activity and mortality rate on a specimen population of 15 Aedes aegypti mosquitoes by observing the reaction of mosquitoes to repellents activity over a 60 minute period.
Macroplastic and Microplastic Abundance at the Greenfield Mangrove Site in Guyana
Authors:   University of Guyana, Dash-Alleyne Suphane , Da Silva Phillip ,   University of Guyana, Perreira Sanasha ,   University of Guyana
Published: June 2024

In the past decades, the use of plastic, particularly single-use plastics, has greatly increased. Guyana is among the developing countries struggling to deal with this new wave of plastic consumption, resulting in indiscriminate dumping and extensive pollution of the environment. This study was designed to determine the abundance and distribution of microplastics and macroplastics at the Greenfield mangrove site, East Coast Demerara, Guyana.
The Impact of Abandoned Buildings in Christianburg, Linden on Community Residents
Authors:   University of Guyana, Ward Sireena , Durga Dahlia ,   University of Guyana, Caiceto David ,   Borough of Manhattan Community College
Published: June 2024

This research aims to find out conditions necessary for abandoned buildings to be considered abandoned, how residents are psychologically impacted by these properties and reasons for these buildings being abandoned in the target area. With this in view, the research methodology to be employed is the qualitative approach. It will be taken from the perspective of the architectural social sciences using the integrative approach which will include phenomenology and grounded theory.
A Study on the Impact of Insecticide Use on Soil Microbes
Authors:   University of Guyana, Hooper Malik , Daniel Ruth ,   University of Guyana, Liverpool Elford ,   University of Guyana
Published: June 2024

This research, which was conducted in South Ruimveldt, Georgetown, Guyana, aimed to examine the side effects of the use of three popular insecticides on microbial biomass below the plants where insecticides were applied, as opposed to the biomass found in the soil where there was no insecticide application. Soil microbial biomass is an important indicator of the health of the soil and aids in nutrient wto estimate.
Synthesis and evaluation of novel thiophene-dhpms designed having anti-breast cancer potential
Authors: Nikam Dhirajkumar , Jain Anurekha , Vetale Shraddha , Bhange Ashwini , Jadhav Shweta
Published: June 2024

The global rise of life-threatening diseases, particularly breast cancer, has emerged as a grave public health challenge. Recognizing the distinct structural demands of anti-breast cancer targets, we have synthesized Thiophene-DHPMs analogs by scaffold hopping approach to exhibit versatility having the ability to target proteins targets of cancer and their interactions contingent upon the various substitutions on them. We have harnessed MCRto synthesize novel Thiophene-DHPMs (4a-4d) derivatives introducing an efficient Biginelli protocol approach. All derivatives are characterized through techniques including FTIR and 1H NMR and evaluated by in vitro SRB assay method on MCF-7 cell line, compared against positive control ADR. Molecular docking studies against kinesin spindle protein Eg5 (1Q0B) revealed superior binding interactions and docking scores (> 8 Kcal) compared to the prototype Eg5 inhibitor Monastrol. Compound 4a binds via Hydrogen bond interaction to target Eg5 with ALA-133, PRO-137, TYR-211 In vitro evaluation of results indicates that compound 4a found to be moderately active (GI50 = -4.41) compared to positive control ADR (GI50 = -7.76) against MCF-7 cells. Compound 4a demonstrates significant activity due to the presence of R=C2H5, X= S, and thiophene ring.
Functionalized 1,3-thiazoles by combined halogen dance
Authors: Sinenko Vitalii O. , Los Oleksandr V. , Potikha Lyudmyla M. , Brovarets Volodymyr S.
Published: June 2024

It has been reported that the halogen dance reaction can be used to synthesize polyfunctionalized 1,3-thiazoles. The transformation into target products was carried out by lithiation of 2-bromo-5-(1,3-dioxolan-2-yl)-1,3-thiazole with lithium diisopropylamide (LDA) followed by treatment with various electrophiles. The obtained compounds were then successfully applied to prepare novel 4,5-difunctional thiazole derivatives.