bluuebunny/crossref_metadata_2025 huggingface dataset:
Six-minute walk test as a predictor for intraoperative anesthesia complications: a prospective cohort at a tertiary hospital, southwestern Uganda
Authors: Ssenyonjo Moses , Kwikiriza Andrew , Migisha Richard
Published: January 2024

Background
The six-minute walk test (6MWT) is an indicator of a patient's overall cardiovascular and respiratory health. It is an inexpensive, and reproducible preoperative risk assessment tool that has been extensively employed to predict post-operative complications in various patient populations. There are limited data as to whether the 6MWT can predict intraoperative anesthesia complications. We determined the incidence of intraoperative complications and evaluated the association between the distance covered during the 6MWT and the incidence of intraoperative complications.
Methods
We conducted a prospective cohort study at Mbarara Regional Referral Hospital from January 17, 2023 to May 19, 2023, among patients who underwent elective surgeries. The intraoperative complications of interest were hypotension (≥ 20% reduction in mean arterial pressure [MAP]), hypertension (≥ 20% increase in MAP), bradycardia and hypoxia. Prior to surgery patients underwent a 6MWT; a distance ≤ 325 meters was considered short. Additional data were collected on patients’ sociodemographic, and medical characteristics using an interviewer-administered questionnaire. We performed log-binomial regression to determine the association between the distance covered during the 6MWT and incidence of intraoperative complications.
Results
We enrolled 169 participants with a median age of 41 years (IQR, 30–55 years); 123 (72.8%) were female. Of the 169 participants, 80 (47.3%) experienced hypotension, 66 (39.1%) experienced bradycardia, 58 (34.3%) experienced hypertension, 11 (6.6%) developed hypoxia, while 6 (3.6%) experienced post-extubation desaturation. The incidence of intraoperative complications was 1.4 times higher (adjusted risk ratio [aRR] = 1.44, 95%CI: 1.18–1.77, p < 0.001) among patients who walked ≤ 325 meters preoperatively than those who walked > 325 meters preoperatively.
Conclusion
The study identified hypotension and bradycardia as the predominant intraoperative complications, affecting over one-third of the participants. Importantly, a short six-minute walk distance independently predicted a higher incidence of intraoperative anesthesia complications. These findings underscore the potential value of routinely employing the 6MWT in preoperative assessments, particularly in low-resource settings, to identify patients at risk of intraoperative complications. Implementing this simple and cost-effective tool could lead to better patient outcomes and improved perioperative care.
A Knowledge-Based Approach for Recognizing Textual Entailments with a Focus on Causality and Contradiction
Authors: Rahimi Zeinab , ShamsFard Mehrnoush
Published: January 2024

There is usually implicit information in natural language texts that can be deduced from the text using background or common-sense knowledge. Recognition of textual entailments falls into this category. It involves receiving two pieces of text and deciding whether the second one entails or contradicts the first one, or if there is no such relation between the two. One of the types of entailment is causality, where the event or situation in one text can cause the event or situation in another text. The aim of this paper is to improve textual entailment by identifying causality and contradiction relationships between pieces of text using knowledge sources. To achieve this, we employ a knowledge-based method that recognizes textual entailments through the use of linguistic and common-sense knowledge (ontologies), with a particular emphasis on implicit or ambiguous causal and contradictory relationships. For this purpose, we first developed two ontologies, including causality and contradiction relations among concepts. Then, two concurrent paths in a pipeline are traversed. In the first path, a rule-based system is utilized to identify simple contradiction relations. The rules are extracted semi-automatically through data mining methods. In the second path, the provided knowledge of causality and contradiction is injected into language models using prompt engineering. Subsequently, the enriched language models undergo fine-tuning with entailment datasets to carry out textual entailment tasks. The results indicate that the combination of the rule-based method and enriched models with causality and contradiction knowledge yields the best performance. Our leading system demonstrates an accuracy of 87.5% on RTE tasks, trained and tested on the FarsTail dataset. This reflects a notable 3.5% improvement over baselines and state-of-the-art systems.
Femtosecond Laser Writing of Photonic Crystal in LiNbO3 Crystal
Authors: Ahmad Ahmad Kamal , Mohammed Miami
Published: January 2024

A numerical investigation of depressed cladding photonic crystal PC that has been buried in bulk lithium niobate crystal material by direct femtosecond (fs) laser writing. The leading guide of light propagation is elucidated through the photonic crystal that is embedded in a lithium niobate. The induced refractive index, confinement losses, and dispersion are numerically calculated according to the orientation of the crystal and the structure geometry of the PC. This structure supports single and highly multimode TE and TM wave guidance at the communication wavelength 1.55µm. We realized that the confinement losses are less than 1dB/cm for both polarizations, and the transmission properties appear good for several PC applications.
Mapping the evolution of green finance through bibliometric analysis
Authors: Minh Sang Nguyen
Published: January 2024

This bibliometric study seeks to analyze the intellectual structure and development of green finance research over a nearly 30-year period. Using Scopus data, a comprehensive analysis of 1,487 English-language publications on green finance was conducted. The scope of the analysis spans the years from 1997 to 2024. The analysis investigates numerous facets of green finance scholarship, such as publication and citation trends, influential works, authorship networks, geographic concentrations, conceptual links, and developmental phases. Since 2015, the number of publications and citations has increased significantly, indicating a significant rise in academic and industry interest. China is the leader in terms of research output and influence, demonstrating its dominance in the field. However, it is essential to note that other Asia-Pacific countries, such as Japan and Malaysia, have also made significant contributions to the field. Public policies, government initiatives, and the participation of the private sector are crucial to accelerating green investments and promoting sustainability, as evidenced by numerous citations to scholarly works on the subject. The study investigates a number of prospective future research avenues, including green bonds, green credit policies, green investment, green financial regulation, and green financial technology applications. Despite its heavy reliance on English-language Scopus sources, this quantitative longitudinal mapping provides valuable insights into the emergence and evolution of green finance as a significant multidisciplinary research field.
AcknowledgmentIt is essential to express gratitude to all those who contributed to the success of this study, particularly those at the Ho Chi Minh University of Banking, Vietnam.
Social media, brand loyalty and the banking industry in Colombia
Authors: Rico Heidy , de la Puente Mario , Diego Rios Mahecha Juan , Perez Helen
Published: January 2024

This study analyzed the relationship between retail bank customers’ loyalty and trust, and focused social media marketing in Barranquilla, Colombia. The survey was conducted in-person among customers (528 participants) at various Colombian banks over a period of seven months, from May 2021 to November 2021. The responses on the survey were rated on a 5-point Likert scale, ranging from “Strongly disagree” to “Strongly agree”. The study also incorporated a focus group with 25 participants aged between 34 and 51. Moreover, the research employs factorial analysis to elucidate the underlying correlations between the variables. The discussion was structured around seven pre-determined variables: Personalization, Entertainment, Engagement, Marketing, Word of Mouth, Trust, and Loyalty. The load factors range between 0.583 and 0.914, implying a high correlation between the survey questions and the constructs. The Cronbach’s Alpha values (from 0.753 to 0.996) and the Composite Reliability values (from 0.739 to 0.875) suggest a high level of internal consistency within the constructs. In the realm of social media marketing, the research underscores the pivotal role of trust as an intermediary in cultivating brand loyalty. The study abstains from concentrating on hypothesis testing, instead it illuminates the criticality of understanding the role trust plays in social media marketing. The research results provide valuable insights for future investigations as well as for enhancing service marketing strategies in the banking sector.
AcknowledgmentsThis study was funded by Education For All Online EU. We thank our participants for their generous contribution to this work.
Social Media and Dental Practitioner's Knowledge of Misinformation, Infodemic and Fact-Checking on Dental Information
Authors: Naik Sachin , Devang Divakar Darshan , Jhugroo Chitra
Published: January 2024

Social media is currently among the most popular web activities among dental professionals. The study aimed to assess social media usage, knowledge about misinformation, infodemic and fact-checking among dental professionals on dental information. The current study design was a descriptive cross-sectional study conducted among dental professionals from Riyadh City, Saudi Arabia. The questionnaire comprised demographic data of study participants and knowledge about misinformation, infodemic and fact-checking about social media use for their dental profession. Descriptive statistics were used for analysis. A total of 1192 dental practitioners responded to the questionnaire. In our study, most participating dentists were young and had 1-5 years of experience (51%). Most participants responded that sometimes (49%), they fact-check social media content about dental information. The google is the most used to check the fact content. About 90% of dentists never received notification about factual errors. The knowledge about misinformation and fact-checking is moderate among dental practitioners. Keywords: Dental practitioner, Dentists, Descriptive study, Fact-checking, Misinformation, social media.
Impacts of Early Marriage on Fertility Outcomes in Nigeria
Authors: Murtala Ibrahim Muhammad , Femi Rufus Tinuola
Published: January 2024

Nigeria is the most populous country in Africa and projected to be the 3rd in the World by 2050. Despite measures to control the country’s population over the years, the total fertility rate has remained high. Fertility rate is associated with various factors but there is limited evidence on the role of early marriage as a predictor or barrier to fertility outcome. This study determined the association between early marriage and fertility outcome in Nigeria. This study is based on secondary data analysis of the 2018 Nigeria Demographic and Health Survey (NDHS). It is a descriptive cross-sectional study with sample that comprised of married women aged 20-24 years old. Data was analyzed using SPSS version 20. The multivariate regression analysis revealed higher likely of women in early marriage to have childbirth in the first year of marriage (OR=2.26, 95%CI=1.96-2.61); and number of children ever born (OR=4.24, 95% CI=3.40-5.27) but lower odd of repeated childbirth in less than twenty-four months (OR=0.66, 95%CI=0.52-0.83) and ever use of contraceptive (OR=0.52, 95%CI=0.45-0.61). However, the adjusted odd ratio only showed significant association between early marriage and number of children ever born (AOR=10.28, 95%CI=2.57-41.13). The nuanced analysis indicates that marriage at any age below 18 had higher effect on fertility than marriage at 18 and above. Early marriage predisposes married women to higher fertility and women with lower age of marriage have likelihood of higher fertility. Improving access of girls to education and contraceptives will delay the timing of pregnancy and childbirth. Keywords: Child marriage, Childbirth, Contraceptive, Early marriage, Fertility, Nigeria.
Sativoside Mitigates High-Fat Diet-Induced Inflammation and Type-2 Diabetes in Adipose Tissue of Wistar Rats
Authors: Priya Veeraraghavan Vishnu , Kumar K.S Rajesh , Jayaraman Selvaraj
Published: January 2024

This study aimed to investigate the impact of Stevioside, on the biochemical changes in high-fat diet-fed Wistar rats. Adult male Wistar rats were induced into a diabetic state through the administration of a high-fat diet and sucrose for 60 days, followed by oral administration of stevioside (20 mg/kg/day) for 45 days. Various parameters, including fasting blood glucose, oral glucose tolerance, insulin, insulin tolerance, liver function (ALT, AST, ALP), kidney function (urea and creatinine), and lipid profiles (TC, TG, FFA, HDL-c and LDL-c), serum adipokines levels such as adiponectin, leptin, resistin were assessed. Stevioside treatment notably improved glucose and insulin tolerances in diabetic rats and normalized their elevated levels of fasting blood glucose, serum insulin, and lipid profile. In the high-fat diet-induced type 2 diabetes rat model, Stevioside effectively restored the altered blood serum levels, demonstrating efficacy comparable to that of metformin. Therefore, Stevioside displays promise as a potential phytomedicine for managing type 2 diabetes mellitus. Keywords: High-fat diet, Insulin tolerance, Type-2 diabetes, Stevia rebaudiana.
Synthesis, Characterisation, and in Vitro Biocompatibility Studies of Selenium Nanoparticles Synthesized using Hybanthus Enneaspermus Plant Extract for Potential Biomedical Applications
Authors: Priya Veeraraghavan Vishnu , Binithadas Segin Chandran Aardra , Priya Manivannan Hema , R Gayathri , S Kavitha
Published: January 2024

Hybanthus enneaspermus (HE) is a traditional medicinal plant used for treating various disease conditions. Selenium nanoparticles (SeNPs) possess various properties such as anticancer, antioxidant, etc. The objective of the present study is to conduct green synthesis of selenium nanoparticles using Hybanthus enneaspermus(HE) and evaluate their biocompatibility. Leaves of HE are utilized for synthesizing SeNPs. Characterization studies of HE-SeNPs are carried out using UV spectrophotometry, FT-IR spectroscopy, and SEM. To check the biocompatibility, hemolytic assay, and Annexin V-PI assays are carried out. A change in color is observed after the addition of sodium selenite to the leaf extract. UV spectrophotometry gives a peak at 271 nm confirming the synthesis of SeNPs. FT-IR gives peaks at 3224, 1565, 1399, 1078, 784, and 717 cm-1 with a fingerprint of 3500 - 1000 cm-1. SEM analysis shows the spherical morphology of the SeNPs. HE-SeNPs at lower concentrations cause less hemolysis. However, HE-SeNPs are found to be less biocompatible, so further studies are needed to confirm their biocompatible nature. SeNPs synthesized from HE can be ideal for biomedical applications but further studies are required to check its biocompatibility. Keywords: SeNPs, Hybanthus enneaspermus, green synthesis, biocompatibility.
Green Synthesis of Gold Nanoparticles Using Eucalyptus and Piper Longum and Its Subsequent Antioxidant Activity Evaluation
Authors: Priya Veeraraghavan Vishnu , Faiz Nadhirah , Sivaswamy Vinay , Kumar S Rajesh
Published: January 2024

Gold continues to be one of the oldest dental restorative materials which has been used for dental repairs for more than 4000 years and remains an important metal in the dental sector. In a world where the importance of nanoparticles has been well established and its preparation has become much easier, it is important to analyse if these nanoparticles can be extracted from a plant based source as well. Along with its extraction, assessment of each property of the nanoparticle is essential. A few ingredients used in Ayurveda which can also be found being used in almost every household is pepper and eucalyptus and over the years, its importance has remained constant, if not showing an increase. The aim of this study was to extract gold nanoparticles using Eucalyptus and Piper longum and evaluate the antioxidant activity of the derived gold nanoparticles. Preparation of plant extract was done following which, extraction of gold nanoparticles was performed. Antioxidant properties of the gold nanoparticles were tested by a DPPH assay method and compared against the antioxidant gold standard, butylated hydroxytoluene (BHT). The percentage of absorbance was calculated and data was analyzed. The results demonstrated the presence of elemental gold. Both, plant extract derived AuNPs exhibited significant free-radical scavenging activity indicating that they possess antioxidant effects. Keywords - Eucalyptus, antioxidant, Nanoparticles, Novel technique, Piper longum.
Estruturação de sistemas de controle gerencial por organizações residentes em parques tecnológicos
Authors: Moreira Márcia Athayde , Costa Everaldo Marcelo Souza da , Freitas Carlos Augusto Santana de
Published: January 2024

Objetivo: A presente pesquisa enfatiza os modelos de sistema de controle gerencial, com o objetivo de analisar a estruturação dos SCGs das empresas incubadas no Parque de Ciência e Tecnologia Guamá, permitindo mensurar o nível de estruturação de seus processos de gestão.
Metodologia: Trata-se de pesquisa exploratória desenvolvida com abordagem quantitativa, por meio da aplicação de questionários aplicados presencialmente em 15 empreendimentos do Parque de Ciência e Tecnologia Guamá.
Resultados: Os resultados indicaram que os empreendedores residentes possuem sistemas de controle gerencial estruturados, com maior ênfase para marcadores de planejamento e controle de resultados e menor estruturação de controles culturais e comportamentais, coadunando com os resultados obtidos com a própria importância atribuída pelos gestores ao uso de SCG. Conclui-se que as empresas participantes da pesquisa realizam uma gestão equilibrada entre o planejamento e o controle operacional, com necessidade de realização de ações para estimular o uso de ferramentas gerenciais que auxiliem na divulgação da cultura e nos controles comportamentais.
Contribuições do Estudo: Como contribuição prática, este estudo coopera para o aprimoramento da gestão de Parques Tecnológicos, a partir do mapeamento das necessidades de seus usuários. Como contribuição acadêmica, acreditamos que compreender fatores de gestão que estão melhor desenvolvidos e os que precisam se desenvolver para o atingimento de níveis satisfatórios de sistemas de controle gerencial é crítico para a definição de políticas internas de desenvolvimento dos processos de gestão, dessa forma, caminhando para a contribuição social da pesquisa, na qual o aprimoramento teórico favorece empreendedores e seus empreendimentos, com ganhos para o ecossistema dos parques tecnológicos e para a sociedade como um todo.
Influência dos estilos de liderança na capacidade de aprendizagem e no uso do orçamento: um estudo em cooperativas agroindustriais
Authors: Silva Elvis Joel Rodrigues da , Toigo Leandro Augusto , Martins Vinicius Abílio Martins , Santos Edicreia Andrade dos Santos
Published: January 2024

Objetivo: Investigar as influências dos estilos de liderança na capacidade de aprendizado e nos tipos do uso do orçamento empresarial em cooperativas agroindustriais.
Metodologia: Trata-se de uma pesquisa descritiva, quanto aos objetivos, de levantamento de campo ou survey, no tocante aos procedimentos, é quantitativa com aplicação da técnica estatística modelagem de equações estruturais com estimação por mínimos quadrados parciais por meio do SmartPLS.
Resultados: Foi possível constatar que (i) a liderança transacional apresentou influência positiva com relação ao uso diagnóstico do orçamento; (ii) a capacidade de aprendizagem organizacional como mediadora da liderança transformacional no uso interativo do orçamento apresentou o resultado esperado; (iii) a liderança transformacional apresentou significância positiva na aprendizagem organizacional; (iv) a capacidade de aprendizagem organizacional teve significância positiva no uso interativo do orçamento.
Contribuições do Estudo: Esta pesquisa contribuiu para evidenciar que o papel do gestor vai além de elaborar, aplicar e acompanhar o orçamento; ele precisa canalizar esforços ou demandar tempo para o processo de gestão, uma vez que os colaboradores percebem a sua importância e contribuem de forma efetiva quando engajados com a organização em que trabalham, foi possível verificar que o estilo do líder tem influência significativa na utilização da referida ferramenta e que esta pode ser uma grande aliada dos gestores se bem desenvolvida.
Accounting for goodwill: reflections historical, conceptual and comparative review
Authors: Calado João Eudes de Souza , Matias-Pereira José
Published: January 2024

Purpose: The purpose is to make reflections from a historical, conceptual and comparative review on goodwill in one hundred years of accounting theory, still considered a difficult topic with the theoretical and normative evolution.

Methodology: Theoretical essay produced from an integrative qualitative literature review. It presents the theoretical evolution and challenges observed by theorists and regulators since the seminal study “Accounting Theory” by William Paton (1922).

Results: The relevance attributed to goodwill goes far beyond the concepts and criteria for recognition and measurement. Its interpretation and processing are influenced by cognitive aspects, economic interests, and in a moment of economic crisis, debates on the topic are intensified, motivated by stakeholders’ concerns, regulators and theorists, the same in one hundred years of evolution. So, the future of goodwill is undefined.

Contributions of the Study: The historical and comparative analysis, limited in the choice of the references on the subject, contributes to confirm the subjectivity and absence of conceptual, normative and practical consensus for goodwill, thus there aren't right or wrong among theorists and regulators. The scenario of high volatility in the capital markets during  Covid-19 pandemic, for example, arose new theoretical discussions about the quantum and multidisciplinary dimension and the possible return of Accounting practices used in the past. Therefore, the relevance of goodwill requires that not only regulators establish rules, but that theoretical and practical ethically contribute to the debate.
The effect of prior period adjustments on equity and ROE of companies listed on B3's New Market
Authors: Silva Fernanda de Deus Vieira , Silva Denise Mendes da , Santos Geovane Camilo dos
Published: January 2024

Purpose: To analyze the effect of prior period adjustments (PPA) on Equity and on Return on Equity (ROE).

Methodology: The Statements of Changes in Equity and the Explanatory Notes of the companies listed on the B3’s New Market, from 2010 to 2019, were researched. To analyze the effects of PPA on equity and ROE, the Wilcoxon test was applied.

Results: The majority of the identified PPA pertain to changes in accounting policies, notably related to the application of IFRS 9/CPC 48 and IFRS 15/CPC 47 in 2018. This means that companies chose to recognize the effects of adopting these standards retrospectively, with a cumulative effect on equity, without presenting comparative information (accounting choice). There was a statistically significant difference between the average variations in adjusted and unadjusted equity and return on equity (ROE). In other words, it is observed that changes in accounting policies and/or error corrections influence the analysis of these indicators. It is important to note that PPA should not affect the net income for the current period, suggesting that the effects resulting from changes in accounting policies and errors tend to protect present and/or future results at the expense of past results.

Contributions of the Study: The main contribution of the study lies in evaluating changes in the equity that do not necessarily result from operating performance or financing strategies, but arising from changes in accounting criteria or errors, which may affect other equity components.
Moluscos marinos de importancia económica en Chile
Authors: Osorio Cecilia , Atria Cifuentes Juan , Mann Fischer Serena
Published: January 2024

Se presenta una sinopsis de los moluscos marinos de importancia económica en Chile. Se resumen las características generales del grupo, sus áreas de extracción en Chile y las artes de captura. Se da alguna información sobre el aspecto histórico de su estudio y la importancia que tuvo para los pueblos aborígenes.en especial los que habitaron las zonas costeras.Una clave de fácil uso permite la identificación de las 46 especies incluidas en este trabajo. Se presenta además los caracteres diagnósticos, datos biológicos, ecológicos y la distribución geográfica de cada una de ellas
El ciclo vital del Muricidae Concholepas concholepas y consideraciones sobre sus primeras fases de vida en el bentos.
Authors: Gallardo Carlos
Published: January 2024

Observaciones de la protoconcha de C. concholepas revelan que la concha del juvenil de esta especie alcanza una longitud de aproximadamente 1700-1800 jUm y un diámetro de la espira de 1400 /Lint en el momento de la metamorfosis. Este tamaño del juvenil al iniciar su vida bentónica es mayor que el observado en el murícido holobéntico Nucella crassilabrum y en la fase de eclosión del murícido Choras giganteas. Fijaciones de larvas de C. concholepas. observadas en Caleta Leandro, bahía de Concepción, confirman los caracteres atribuidos a este juvenil recién metamorfoseado. De este modo, mientras transcurre su fase planctónica, la concha larval de C. concholepas crece desde 260 pm (longitud al eclosionar) hasta cerca de 1800 /im de longitud en el momento de fijarse. Poblaciones densas de individuos jóvenes (X =52 individuos por m-) han sido observadas en la costa intermarcal rocosa de Mchuín, provincia de Valdivia; se encuentran a nivel de cinturón de Perutnytilus purpuraras y áreas subyacentes. El crecimiento inicial de este C. concholepas bentónico ocurriría en este lugar; mientras habita en este nivel parece alimentarse de los mitílidos y cirripediosque allí son comunes (P. purpúralas, Balanus laevis. B. flosculus y Chtainalus cirratus). Se discute la ocurrencia y ritmo de algunos procesos en el ciclo vital de este muricido comestible.
Concholepas concholepas (MOLLUSCA:GASTROPODA:MURIC1DAE): postura de cápsulas en el laboratorio y la naturaleza.
Authors: Castilla J.C.
Published: January 2024

Se presentan nuevosantecedentes sobre postura de cápsulas de Concholepas concholepas (Bruguiére), loco, en la naturaleza (2 años de observaciones) y en el laboratorio (5 años de observaciones). Las observaciones en el laboratorio y los datos de la literatura indican que C. concholepas deposita cápsulas con huevos prácticamente a lo largo de todo el año. Sin embargo, nuestros resultados muestran que las mayores frecuencias de depositación de cápsulas, tanto en el laboratorio como en la naturaleza, ocurren entre enero/febrero y mayo/julio. Se demuestra la existencia de una relación lineal directamente proporcional entre las longitudes promedio de las cápsulas depositadas y el largo de la concha de las hembras ovopositoras. El tamaño mínimo de hembra ovopositora en el laboratorio fue de 40.1 mm. Se presenta una discusión en la que se analizan las posibles épocas de protección de la especie.
Principales depredadores de Concholepas concholepas (MOLLUSCA : GASTROPODA : MURICIDAE) y observaciones preliminares sobre mecanismos conductuales de escape y defensa.
Authors: Castilla J.C. , Cancino J.
Published: January 2024

Concholepas concholepas (Bruguiére), loco, es depredado en la costa central de Chile por numerosas especies de invertebrados y vertebrados marinos. Se tienen evidencias directas de depredación en las poblaciones intermareales y sublitorales de loco por parte de los asteroídeos Mcyenaster gelatinosas y Heliaster helianthus: de los crustáceos Homalaspis plana y Cáncer plebejus: de las aves Larus dominicanas y Hacmatopus ater y de los mamíferos l.utra felina y Otaria flavescens. C. concholepas muestra 5 conductas de escape y/o defensa frente a sus depredadores: 1. Tuerte adhesión al sustrato ante estímulos mecánicos y químicos provenientes de asteroídeos; 2. Adhesión al sustrato (Iafase) y desprendimiento (2a- fase), ante estímulos mecánicos; 3. Desprendimiento espontáneo,en poblaciones sub litorales, ante la presencia de buzos; 4. Elevación y rotación de la concha en presencia de M. gelatinosas: y 5. Fuga frente a //. helianthus. Esta última conducta sólo la presentan locos de tamaños pequeños, menores de ca. 40 mm longitud máxima de peristoma.
Distribución de clorofila y condiciones oceanográficas superficiales frente a Chile central (LATITUDES 32°S - 38°S, Febrero 1982).
Authors: Arcos Dagoberto , Salamanca Marco
Published: January 2024

Se presenta la distribución superficial de temperatura, salinidad, densidad (Sigma - T) y abundancia fitoplanctónica expresada como mg CLa m-3, observada durante febrero de 1982 en el Pacífico Suroriental en el sector comprendido entre los 32°S y 38°S frente a la costa de Chile central. Se delimita una zona de influencia de aguas provenientes de afloramientos costeros entre Punta Roncura y Punta Lavapié, zona que es caracterizada por una temperatura inferior a 16°C; salinidad mayor a 34,3; densidad (Sigma -T) mayor a 25,5 y una concentración de pigmento fitoplanclónico mayor a 20 mg CL a m~3. Considerando que el área de influencia del afloramiento costero tiene una superficie aproximada de 16.000 km2 y tomando en cuenta un promedio de 13 mg CL a m-3,el área representaría una producción primaria de 0,45 gCm-3d-1, el cual se encuentra en el rango de los valores promedios informados previamente para la costa norte de Chile como también para la región de afloramiento frente a Perú.
Parasitismo de juveniles de copépodos Caligoideos sobre larvas de peces en Bahía Coliumo (36°32'S; 75°57'W), Chile.
Authors: Herrera Guillermo
Published: January 2024

Se entregan antecedentes, principalmente cualitativos de la presencia de estadios de desarrollo de copépodos parásitos, sobre determinadas larvas de peces costeros de la zona de la Bahía de Coliumo. De un muestreo efectuado en agosto y septiembre de 1981. se obtuvieron cinco formas larvales de peces parasitadas pertenecientes a Gobiesox marmoratus, Ophrogobrus jenynsi y otras tres no identificadas. Los parásitos se atribuyeron a representantes de Cahgidae y responden a estadios de copepoditos y de chalimus. Finalmente, se discuten algunos alcances relacionados con probables consecuencias ecológicas derivadas de la presencia de los parásitos registrados en las larvas de peces colectadas.
Distribución vertical y composición de las agrupaciones de Ictioplancton y Zooplancton de invertebrados en el Pacífico Tropical .
Authors: Loeb V.j. , Nichols J.A.
Published: January 2024

Se describe la composición y distribución vertical del ictioplancton y zooplancton de invertebrados del estrato 0-100 m. en la región N W del Pacífico Tropical Oriental, usando datos de 23 muestras de neuston y 166 muestras estratificadas de redes tipo “bongo". La máxima abundancia del zooplancton de invertebrados (número x 10 m~2) se presenta durante el día en la zona inferior del estrato de mezcla (~ 40 m; definido por XBT) y en la zona superior del estrato de mezcla durante la noche; se presentan también altas concentraciones (número x 1000 m-3) en el neuston tanto en el día como en la noche. La máxima abundancia y diversidad de ictioplancton (número de taxa) se presenta en la parte superior de la termoclina, encontrándose la mayoría de los individuos y especies por debajo de la profundidad de máxima abundancia de los taxas principales de zooplancton de invertebrados. La distribución del ictioplancton de profundidad y la dominancia numérica de las especies que son "habitantes de profundidad” en su fase larval y migradores activos para alimentarse en la superficie en su fase adulta, son únicas y características de esta región y distinguen la fauna de peces del Pacífico Tropical Oriental de aquella del giro central del Pacífico Norte.
Fitoplacton del Pacífico Colombiano como indicador de masas de agua (ERFEN IV)
Authors: Castillo González Francisco Alberto
Published: January 2024

Sesenta y dos (62) especies de diatomeas pennadas, y ochenta y cinco (85) de dinoflagelados encontrados en el Pacífico colombiano (triángulo estudiado), indican que son especies pertenecientes a un fitoplancton oceánico. Las especies de dinoflagelados más frecuentes son: Omitliocercus thumii, Ceratium breve var paralellum, C. breve var schmidtii, C. tripos var atlanltcum. Las diatomeas más frecuentes fueron Coseinodiscus kurzii, C. gigas, C. argus o perfóralas, C. radiatus, Planktontella sol.
Distribución de la materia orgánica, carbono orgánico, nitrógeno orgánico y fosforo total en los sedimentos recientes de la Bahía de Concepción.
Authors: Rudolph Anny , Ahumada Ramón , Hernández Sergio
Published: January 2024

La costa donde se ubica la Bahía de Concepción presenta durante parte de la primavera, verano y comienzos de otoño, condiciones meteorológicas favorables a la surgencia (Ahumada y Chuecas. 1979). Durante este período se ha delectado altos valores en biomasa del fitoplancton, i.e., 50 mg CI.,m-:' (Ahumada ti al, 1983), una biomasa de zooplancton de 2.700 mi/1000 m-* de agua filtrada (Troncoso, comunicación personal) y una alta producción secundaria del bentos, materia orgánica de 45 g m-2 año-1 para una de las especies dominantes (Carrasco y Arcos, 1980). Existen antecedentes para creer que el afloramiento de las Aguas Ecuatoriales Subsuperficiales juega un rol relevante en la sobreproducción de materia orgánica de la bahía y parte importante de ésta producción se incorpora a los sedimentos blandos, creando un ambiente reductor (Falke, 1950; Ahumada y Arcos, 1976 y Ahumada etal, 1983). El presente trabajo entrega rangos y valores del contenido de materia orgánica, carbón orgánico, nitrógeno orgánico y fósforo total de los sedimentos superficiales de la Bahía de Concepción. Además presenta la distribución espacial de los parámetros estudiados.
Tasa de crecimiento larvario de la sardina española Sardinops sagax frente a Chile central, determinada por contero de anillos diario en otolitos
Authors: Castillo Gonzalo , Aguilera Eduardo , Bernal Patricio A. , Butler John L. , Chong Javier , González Humberto , Oyarzún Ciro , Veloso Carlos
Published: January 2024

Se determina la tasa de crecimiento de Sardinops sagax (Jenyns, 1842), mediante el análisis de incrementos diarios en otolitos sagina de larvas recolectadas en el área de Talcahuano (36°35'S; 73°03' W). El rango de tallas estudiado va desde 5 a 22 mm de longitud larval, lo que corresponde a ejemplares de entre 3 y 41 días después de la reabsorción del vitelo. El diámetro y radio de los otolitos se relaciona alométricamente con la talla, y consecuentemente con la edad. Las tasas de crecimiento son menores que las reportadas en otras áreas geográficas para esta especie, probablemente en respuesta a las bajas temperaturas ambientales (12.5°C). Se determina que 5. sagax crece 0.4 mm/día a los 13 mm de longitud, tasa que equivale al 50% de la tasa de crecimiento a 18.6°C. Se discuten las implicaciones ecológicas de estos resultados.
Cultivo de Ostrea chilensis PHILIPPI 1845 en una bahía de la costa Norte-Centro de Chile.
Authors: Disalvo Louis H. , Martínez Edwin
Published: January 2024

Semillas de Ostrea chilensis producidas en incubadora fueron cultivadas en la Bahía Herradura (30°S), Chile, empleando tecnología japonesa de crecimiento en el ambiente. Las ostras crecieron a una tasa aproximada de 0,17 mm por día y un grupo alcanzó la talla comercial de aproximadamente 50 mm dentro de un año después de la fijación. En los 6 meses subsecuentes, ocurre un engrosamiento de las conchas con pequeños aumentos en largo de la concha. La supervivencia de los cultivos excedió el 60% en un período de 18 meses. El cultivo fue afectado negativamente por desechos de industrias pesqueras, y perforación de conchas por Polydora sp. (Polychaeta: Spionidae).
Desarrollo larvario del camarón Peisos petrunkevitchi Burkenroad, 1945, en laboratorio (CRUSTACEA, DECAPODA, SERGESTIDAE)
Authors: Mallo Juan Carlos
Published: January 2024

Este trabajo da a conocer los primeros estadios de vida de Peisos petrunkevitchi Burkenroad, 1945, especie muy importante en las tramas tróficas del Ecosistema Costero Bonaerense y del norte de la Patagonia. Los estadios larvales han sido criados desde la eclosión hasta la postlarva. Los huevos fueron obtenidos de hembras maduras desovadas en laboratorio. Se describen cuatro fases de nauplius, cinco de protozoea, dos de zoea y cuatro de postlarva. El desarrollo completo en laboratorio, a una temperatura media de 18o ± 2°C y una salinidad de 34 ± 0,5%c, demandó 45 a 48 días. El alimento suministrado a los diferentes estadios larvales, exceptuando el nauplius que se alimenta de sus propias reservas, fue la diatomea Skeletonema costatum, proveniente de cultivos in vitro.
Parásitos del pejegallo, Callorhynchus callorhynchus (L.), en Chile: aspectos biológicos y sistemáticos.
Authors: Fernández Jacqueline C. , Villalba César S. , Alviña Andrés
Published: January 2024

Se estudió la parasitofauna de 55 ejemplares de Callorhynchus callorhynchus (Lineo, 1758) capturados frente a las costas de Concepción (36° 49'S; 73° 10' W), Chile. Los parásitos encontrados son: MONOGENEA: Callorhynchicola branchialis Brinkman, 1952; Espocotyle callorhynchi (Manter, 1955). ASPIDOGASTREA: Trigonostoma callorhynchi Szidat, 1966. CESTODARI A: Gyrocotyle rugosa Diesing, 1850; G. máxima Mac Donagh, 1927. COPEPODA: Caligus teres Wilson, 1905; K royen na meridionalis Ramírez, 1975. HIRUDINEA: Branchellion callorhynchus Szidat, 1972. ISOPODA: Meinertia sp. Las mayores prevalencias corresponden a G. rugosa (92,7%) y E. callorhynchi (53,7%), mientras que las mayores intensidades medias son de C. teres (10,7) y E. callorhynchi (5,1). De la totalidad de parásitos, las dos últimas especies presentan una distribución altamente sobredispersa (sy/x > 1), indicando una distribución agrupada y no al azar, mientras que la de G. rugosa es homogénea o regular (normalmente se encontró sólo 2 individuos en cada pez). La mayoría de los parásitos de Callorhynchus callorhynchus (6 de 9 especies), corresponderían a parásitos de tipo filogenélico con cierto grado de coevolución con su hospedador y una especificidad muy alta. B. callorhynchus, C. teres y Metnertia sp. corresponden a parásitos de tipo ecológico, pudiendo llegar a presentar una alta especificidad, como B. callorhynchus.
Desarrollo embrionario y larval del Choro Zapato Choromytilus chorus (BIVALVIA, MYTILIDAE)
Authors: Chaparro O.R. , Sanhueza M.A.
Published: January 2024

Reproductores de Ch. chorus fueron inducidos al desove mediante estímulos térmicos y químicos (KC10,5 M). Se realizó la fecundación para continuar con el cultivo larval hasta la fijación de los juveniles. Las larvas fueron alimentadas diariamente con cultivos monoalgales de Isochrysis aff. galbana, Monochrysis lutherio Pseudoisochrysissp. en concentraciones de 30.000 cel/ml durante la primera semana de veliconcha y 50.000 cel/ml en el resto del tiempo. La temperatura de cultivo fue de 16,5°C y la salinidad fluctuó entre 23 y 25o/oo. La larva trocófora apareció a las 19 horas y la concha se hizo evidente a los 3 días. El estado de umbo se observó a los 7 días, el ojo a los 25 días y la fijación larval ocurrió a los 27-32 días cuando la larva ha alcanzado un tamaño superior a los 300 un de longitud máxima.
Deficits in Radiation Health Affects Knowledge among Emergency Nurses in Japan’s Nuclear Emergency Core Hospitals
Authors: Kawaoka Yuta , Yamaguchi Takumi , Yanagida Nobuhiko , Matsunari Yuko
Published: January 2024

Background:

In the wake of the Fukushima Daiichi Nuclear Power Station disaster in 2011, Japan established Nuclear Emergency Core Hospitals (NECHs) to prepare for future nuclear incidents.

Objective:

This study investigates the knowledge and health anxiety related to radiation among nurses working in emergency units at NECHs in Kagoshima Prefecture.

Methods:

A web-based questionnaire was distributed to 36 nurses, utilizing a cross-sectional design with a response rate of 55.6%. The survey covered demographic details and posed questions about radiation health effects and nuclear disaster medicine.

Results:

Results revealed that only 30% had studied radiation health effects at educational institutions, and 95% expressed a desire for further training. The correct response rate for questions about nuclear disaster medicine was over 40%, but less than 10% for questions about radiation health effects.

Conclusion:

Despite limitations such as sample size and potential sampling bias, this study is the first of its kind. It highlights the urgent need for comprehensive training programs to improve nurses' knowledge and alleviate their health anxieties about radiation. Future research should extend this study to other regions and countries to validate these findings.
A Systematic Review for Stand-up Paddle
Authors: Freitas João , Conceição Ana , Louro Hugo , Forte Pedro , Marinho Daniel A. , Neiva Henrique P.
Published: January 2024

Background:

The goal is to investigate how the length and height of passes impact a team's performance in national championships. A predictive model will be developed to analyse the success of different pass characteristics, including short, medium, and long length and ground, low, and high height. The model will be based on the points earned and will determine which combination of pass characteristics is most effective.

Objective:

Therefore, this systematic review aims to identify and synthesize the external and internal parameters commonly used to evaluate SUP performance under different test conditions.

Methods:

The search was conducted in multiple scientific databases (Google Scholar, MEDLINE/(PubMed), Science Direct, and Web of Science) and was completed on January 31, 2022, using the following keywords: “stand up paddle,” “stand up paddling”, and “stand up paddle boarding.”

Results:

Twenty-one articles were selected, involving a total of 238 subjects at both the competitive and recreational levels. SUP athletes have increased muscle mass, decreased body fat percentage, and used more efficient paddling techniques, highlighting the importance of equipment evaluation in improving athletic performance.

Conclusion:

More research is needed to improve the performance and expand the culture of SUP. The integration of specific technologies can help to understand better the variables that affect performance outcomes.
Barriers Contributing to Loss to Follow-up among HIV-patients in Limpopo Province, South Africa: Patients’ and Nurses’ Perspectives
Authors: Modipane Mahlatse , Khoza Lunic B. , Ingersoll Karen
Published: January 2024

Background:

Antiretroviral therapy is a lifelong commitment that requires patients to adhere to their daily medication dose schedules and make frequent visits to health services for their care. People living with HIV can live healthy long lives when retained on antiretroviral therapy. Retention in care has been identified as the benchmark in the HIV Care Continuum, where most people living with HIV fail. Interventions are urgently needed to address this benchmark to achieve the worldwide 95-95-95 goals. Despite the South African government`s efforts to expand access to antiretroviral therapy services from urban centers to resource-constrained rural communities, there were 140,000 HIV- related deaths in 2014 and 85,796 HIV- related deaths in 2021. Patients have become lost to follow-up, putting their health and that of their communities at risk.

Moreover, the loss of follow-up care among HIV-positive people who are on antiretroviral treatment continues to be a significant problem. The study determined barriers contributing to the Loss of follow-up rates among people living with HIV.

Methods:

A qualitative research study was conducted; Non-probability purposive sampling was used to select eight nurses from clinics with the highest and lowest loss-to-follow-up rates. The probability systematic sampling method was used to select patients from the selected clinics. Data were collected through semi-structured interviews, and content analysis was used to analyse the data.

Results:

Patients’ and nurses’ perspectives on barriers contributing to the loss of follow-up among people living with HIV included lack of confidentiality, lack of understanding of antiretroviral treatment, patients’ self-transfer, and feeling better physically.

Conclusion:

Understanding the reasons for the Loss of follow-up could inform the development of retention in care interventions for Limpopo province. The study can be most beneficial with HIV education, skills building, and outreach programme strategies; this will, in turn, increase the knowledge needed to better attract and retain HIV-positive patients in healthcare settings.
A estrutura emblemática nas Aves Ilustradas em avisos para as religiosas servirem os ofícios nos seus mosteiros de Soror Maria do Céu (1734)
Authors: Didier Lucília
Published: January 2024

The work Aves Illustradas em avisos para as Religiosas servirem os ofícios nos seus Mosteiros, by Soror Maria do Céu (1658-1753), published in 1734, consists of a series of fourteen speeches written as fables or apologues where birds receive the allegorical and simbolic capacity of transmitting the moral values and teachings to the convent nuns, consisting each speech in a kind of “device” for each convent labour that could allow this work to be considered as an atypical form of emblematic literature.
Entre Camões, Rodrigues Lobo e António Vieira a bibliografia de Maria Lucília Gonçalves Pires
Authors: Santos Zulmira , Fardilha Luís
Published: January 2024

Having as a background the bibliography of Maria Lucília Gonçalves Pires, this article draws attention to its importance, within the scope of approaching issues of literature of spirituality, literary theory, writing practices of mannerism and baroque.
Ethos e argumentação nas funções-orador: juiz, ministro e candidato
Authors: Garcia Juliano dos Santos , Catelão Evandro de Melo
Published: January 2024

In this study, the objective is to conduct a descriptive-interpretative analysis of argu-mentation and ethos constructed in light of the acknowledged change in social roles by an individu-al in their public life across three contexts: judge, minister of justice, and candidate. To achieve this, anchored in Textual Linguistics, we employ concepts and analytical procedures derived from the Theory of Argumentation in Discourse (TAD) for a textual/discursive analysis of the individual's personal publications on social media during the three indicated periods of social role transition. In terms of research, the primary inquiry revolves around how the generation and maintenance of a positive self-image or engagement in the transition/maintenance of positions were carried out. Results of the analyses indicate a particular shift in the speaker's employment of strategies for au-dience adherence in the analyzed composites since their assumption of a public office, particularly concerning the maintenance of the stereotyped ethos as a hero, initially created in the first phase as a judge.