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COMPARATIVE ANALYSIS OF PESTICIDE DEGRADATION PATHWAYS AND STEREOSELECTIVE BEHAVIOR IN AGRICULTURAL SOILS
Get PDFObjectives: This study examines the degradation pathways of chiral pesticides in agricultural soils, with a focus on their stereoselective behavior and environmental fate. Specifically, it explores the degradation kinetics of the chiral herbicide profoxydim, evaluating how soil chemistry, microbial activity, and environmental conditions influence stereoisomer persistence. Additionally, the study assesses the impact of biochar amendments on pesticide degradation dynamics.
Theoretical Framework: The research builds upon established principles of pesticide fate and transport, integrating stereoselectivity as a key factor in environmental risk assessment. The role of biochar in modifying microbial degradation, adsorption capacity, and bioavailability is also considered within the broader context of sustainable soil management.
Method: Advanced analytical techniques, including QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) extraction and HPLC-MS/MS (High-Performance Liquid Chromatography coupled with Tandem Mass Spectrometry), were employed to quantify stereoisomers and their degradation products. Comparative analyses were conducted on soil samples with and without biochar amendments to evaluate changes in degradation kinetics and stereoselective persistence.
Results and Discussion: Findings indicate that certain stereoisomers of profoxydim exhibit prolonged environmental persistence, leading to potential ecotoxicological concerns. Soil chemistry and microbial activity significantly influence degradation rates, with biochar demonstrating the ability to alter pesticide behavior by modifying microbial interactions and adsorption processes. The stereoselective nature of degradation underscores the need for refined risk assessment strategies that account for isomer-specific persistence.
Research Implications: This study highlights the necessity of incorporating stereoselective analysis in pesticide regulation and environmental risk assessments. The observed influence of biochar on pesticide degradation presents a potential strategy for mitigating the environmental risks associated with pesticide use.
Originality/Value: By integrating stereoselective degradation analysis with soil amendment strategies, this research advances current understanding of pesticide fate in agricultural soils. The findings offer a novel approach to improving pesticide management and promoting sustainable agricultural practices through targeted soil amendments
RETOS Y BENEFICIOS DEL USO DE HERRAMIENTAS ANALÍTICAS EN LA MODERNIZACIÓN DE LA GESTIÓN FINANCIERA PÚBLICA
Get PDFObjetivo: El objetivo de este estudio es investigar la influencia y el impacto de las herramientas analíticas en la gestión financiera pública, con el objetivo de identificar las principales herramientas utilizadas, analizar cómo la automatización de procesos financieros contribuye a la eficiencia operativa, y determinar su rol en la mejora de la rendición de cuentas y la toma de decisiones estratégicas.
Marco Teórico: La capacitación en la adaptación tecnológica (Vanegas et al., 2021) la actualización constante en nuevas habilidades, es esencial para nuevos entornos empresariales y organizacionales, la gobernanza en datos y Bigdata descrito por (Jiang et al., 2024) subraya lo esencial de la gobernanza de datos en la estructuración de estándares éticos y de calidad.
Método: La metodología adoptada para esta investigación comprende un enfoque mixto que abarca métodos cuantitativos y cualitativos para describir la influencia de las herramientas analíticas en la gestión financiera pública. La recolección de datos se realizó mediante entrevistas de su punto de vista a funcionarios sobre sus experiencias y opiniones en la aplicación de herramientas analíticas y en el análisis de datos presupuestales que inciden en la relación de herramientas analíticas y la mejora en la gestión financiera.
Resultados y Discusión: Los resultados obtenidos revelaron que la analítica de datos es un puente en la mejora de la eficiencia y la eficacia en el sector público, acortando tiempos y pudiendo optimizar procesos que anteriormente tomaban mayor tiempo de análisis.
Implicaciones de la investigación: Se discuten las implicaciones prácticas y teóricas de esta investigación, proporcionando información sobre cómo los resultados pueden aplicarse o influir en las prácticas en el campo de la analítica de datos como nueva tendencia en la Industria 4.0. Estas implicaciones podrían abarcar a funcionarios públicos que están en el día a día constantes en la toma de decisiones en las entidades del estado, mediante la constante capacitación que respalden el uso eficiente de estas tecnologías.
Originalidad/Valor: Este estudio contribuye a la literatura al exponer en relación de las herramientas analíticas que existen actualmente y como estas tendrán un impacto en la gestión financiera. La relevancia y valor de esta investigación se destaca en que presente una influencia para la práctica profesional en la automatización de procesos y la toma de decisiones estratégicas
MAHABBAH BONDING RELATIONSHIP: RELATIONSHIP MARKETING THEORY IN ISLAMIC VALUE LENS TOWARD BUSINESS SUPPORTING CAPACITY IN BUSINESS GROUPS (KUBE) MSME FISH PROCESSING IN CENTRAL JAVA, INDONESIA
Get PDFObjective: This research proposes a new conceptual model in marketing activities to provide benefits for all parties involved in a marketing relationship bond.
Theoretical Framework: The integration of dimensions from Relationship Marketing Theory and Islamic Values forms a new conceptual effort to enhance marketing performance, which is Mahabbah Bonding Relationship.
Method: This study employs a grounded theory research design to form constructs and develop theories from data collected directly through observation, interviews, and library research.
Results and Discussion: The Mahabbah Bonding Relationship, which represents a brotherhood relationship among human resources in binding customers based on shared Islamic values to strengthen relationships and create sustainable mutual benefits.
Research Implications: This study holds significant implications for expanding the current literature and advancing marketing theory and business practices. Human resource skills in building relationships based on shared Islamic values are crucial for enhancing marketing performance.
Originality/Value: The integration of dimensions from Relationship Marketing Theory with the bonding approach and Islamic Values with the Mahabbah concept introduces the dimensions of the Mahabbah Bonding Relationship
CALIDAD DE VIDA DEL CAPITAL HUMANO EN LOS NEGOCIOS DEL COMERCIO AL POR MENOR
Get PDFObjetivo: Analizar el nivel de calidad de vida del capital humano (CVCH) y la estabilidade económica desde la perspectiva de los propietarios de las empresas del comercio al por menor de Guanajuato, México
Marco Teórico: En este tema se presentan los principales conceptos y teorías que sustentan la investigación en base a la calidad de vida de los trabajadores proporcionando un modelo base de estudio.
Método: La recolección de datos se realizó mediante cuestionario a los propietarios de las empresas del comercio al por menor. El análisis del los datos se ha realizado mediante los análisis factorial exploratorio, descriptivo y regresión lineal múltiple
Resultados y Discusión: Los resultados desvelan que más de la mitad de los propietarios de los negocios de comercio al por menor otorgan de buena a excelente CVCH. Revelando que la estabilidad económica y flexibilidad salarial, flexibilidad interna y prestigio de la empresa influyen en la CVCH.
Implicaciones de la investigación: Se discuten las implicaciones prácticas y teóricas de esta investigación, proporcionando información sobre cómo los resultados pueden aplicarse o influir en las prácticas en el campo laboral. Estas implicaciones podrían abarcar a diferentes sectores y distintas tipologias de empresas.
Originalidad/Valor: Este estudio contribuye a la literatura en la implementacion del planteamiento de un modelo próprio elaborando un instrumento denomidado CVCH adaptado a esta investigación. La relevancia y valor de esta investigación se evidencian en el área laboral
ANALYSIS OF THE MATERIAL STORAGE PROCESS OF AN INDUSTRIAL ORGANIZATION IN MANAUS, BRAZIL
Get PDFObjective: This study analyzed the stages of the material storage process in an industry that operates in the industrial hub of Manaus.
Theoretical Framework: The research was based on the theories of processes and storage to build a theoretical architecture that summarizes the state of the art.
Method: The method used was a survey, with data collected using a semi-structured interview script and another observation script, analyzed using the client-supplier technique and organized using tables summarizing the stages and their contents and objectives.
Results and Discussion: The results showed that a) there are eight stages in the storage process used, including a previous stage of weighing the material; b) the more complex stages are performed with a greater number of sub-stages, which allows for fewer failures in the operations as the labor force and technological instruments are specialized in their execution; and c) the specific objectives of each stage are aligned with the intended objective of the storage process.
Implications of the Research: The findings show that the empirically observed stages are in line with the theoretical architecture of the study, with the first and last stages being, respectively, reception and dispatch, and the intermediate stages varying according to the type of material and specificities of the production process.
Originality/Value: The main contributions of the study to science were the proposition of a conceptual definition for the materials storage process and the confirmation that this process begins with reception and ends with dispatch, differing in the intermediate stages
ASPECTOS EMOCIONAIS NA PRÁTICA ESPORTIVA: EDUCAÇÃO FÍSICA, BURNOUT E DESAFIOS DO ATLETA AMADOR NO ENSINO MÉDIO PÚBLICO
Get PDFObjetivos: Este estudo investiga os impactos emocionais da prática esportiva intensiva em atletas amadores do ensino médio público, com foco no burnout esportivo e na contribuição da Educação Física na promoção da saúde mental. O objetivo central é analisar os desafios emocionais desses jovens e propor estratégias pedagógicas que conciliem demandas acadêmicas e esportivas, prevenindo o esgotamento.
Referencial Teórico: O burnout esportivo é um fenômeno caracterizado por exaustão física e emocional, despersonalização e sentimento de ineficácia, sendo comum entre atletas submetidos a cargas intensas de treino e pressão por desempenho (Raedeke & Smith, 2001; Gustafsson et al., 2017). No contexto escolar, a Educação Física pode atuar como mediadora na promoção do bem-estar emocional, ao desenvolver competências socioemocionais e estratégias de enfrentamento (Darido & Mesquita, 2021). A revisão da literatura destaca a importância de políticas pedagógicas voltadas à gestão do estresse esportivo e acadêmico (Samulski, 2009; Santos et al., 2023).
Método: A pesquisa utiliza uma abordagem mista, combinando revisão sistemática, análise qualitativa e estudo de caso em três escolas brasileiras. Foram analisados dados quantitativos e qualitativos, incluindo entrevistas com professores, treinadores e alunos, além de questionários sobre carga de treino, rendimento escolar e sintomas de burnout. A análise estatística incluiu testes t para amostras independentes e ANOVA, seguindo recomendações metodológicas de Field (2022).
Resultados e Discussão: Os achados revelam que 60% dos atletas estudantis enfrentam dificuldades emocionais relacionadas à sobrecarga esportiva (40 horas semanais), cobrança excessiva (72%) e falta de suporte psicológico. Consequências incluem queda de 22% no rendimento acadêmico e aumento de 40% no risco de lesões. Intervenções como flexibilização curricular (redução de 38% no estresse), programas de mentoria (85% de satisfação) e aulas de Educação Física com foco socioemocional (aumento de 35% na motivação) mostraram-se eficazes na prevenção do burnout. A Educação Física escolar deve adotar práticas pedagógicas que integrem psicologia do esporte e acompanhamento emocional, promovendo equilíbrio entre esporte e educação
THE INFLUENCE OF TRUST ON CONSUMER ATTITUDES AND PURCHASE INTENTIONS REGARDING SECOND-HAND GOODS ON ONLINE PLATFORMS
Get PDFIntroduction: This study explores the role of electronic trust and its influence on both the attitudes and behavioural intentions of consumers engaged in collaborative consumption practices. A quantitative survey was conducted among 149 individuals who are members of Facebook groups dedicated to the buying and selling of second-hand items. The findings reveal that two dimensions of trust, credibility, and integrity, have a significant positive effect on consumers’ attitudes and purchase intentions. In contrast, the dimension of benevolence does not exhibit any significant effect on either attitude or behavioural intention.
Objective: The objective of this study is to examine the role of electronic trust (e-trust) and its impact on consumers’ attitudes and behavioural intentions in the context of collaborative consumption, specifically within second-hand marketplaces on social media.
Theoretical Framework: This study is based on trust theory, focusing on three key dimensions of electronic trust: credibility, integrity, and benevolence. These elements are hypothesized to influence consumer attitudes and behavioural intentions in online collaborative consumption, particularly within second-hand marketplaces on social media.
Method: A quantitative research approach was employed, using a structured survey distributed to 149 participants who are active members of Facebook groups engaged in the buying and selling of second-hand goods.
Results and Discussion: The results indicate that the trust dimensions of credibility and integrity significantly and positively influence both consumer attitudes and behavioural intentions. However, benevolence does not show any significant effect on either construct. This suggests that in peer-to-peer online transactions, perceived reliability and honesty are more critical than emotional goodwill.
Research Implications: These findings have practical implications for platform designers and group administrators who aim to foster trustworthy environments. Highlighting credibility and integrity—through verified profiles, transparent communication, or user reviews—may enhance consumer engagement and purchasing behavior in online collaborative consumption platforms.
Originality/Value: This study contributes to the literature by examining electronic trust in informal online second-hand, an area that remains relatively unexplored. Its originality lies in the application of trust theory to collaborative consumption settings, focusing on how specific dimensions of trust—credibility, integrity, and benevolence—influence consumer behaviour. The findings provide practical value by identifying which trust factors most effectively encourage positive attitudes and purchase intentions, offering guidance for improving trust in peer-to-peer digital environments
STAKEHOLDER ENGAGEMENT AND PROJECT PERFORMANCE OF ROAD INFRASTRUCTURE PROJECTS IN CENTRAL EQUATORIA STATE, SOUTH SUDAN
Get PDFObjective: This study sought to establish the relationship between stakeholder engagement practices and the performance of road infrastructure projects in Central Equatoria State, South Sudan.
Theoretical Framework: The key stakeholder engagement practices explored in this study included stakeholder identification and mapping, communication, feedback mechanisms, involvement in decision-making, and conflict resolution while project performance was evaluated in terms of schedule adherence, cost efficiency, and quality outcomes. This study will be anchored on three theories namely; stakeholder theory, resource dependency theory, and social exchange theory.
Method: The study adopted a descriptive research design where stratified random sampling techniques was used to collect data from 58 respondents drawn from various stakeholder categories, including project managers, engineers, contractors, government officials and community members. Data was collected using structured questionnaires and analyzed using both descriptive and inferential statistics. Inferial statistics involved multiple regression analysis that assessed the relationships between stakeholder engagement practices and project performance.
Results and Discussion: The results indicated that communication and stakeholder identification had the strongest positive influence on project performance, while feedback mechanisms, decision-making involvement, and conflict resolution also contributed but to a lesser degree. Challenges such as resource limitations, diverse stakeholder interests, and inconsistent feedback collection processes were identified as barriers to effective engagement..
Research Implications: The study concluded that structured and inclusive stakeholder engagement strategies are essential for enhancing project outcomes. The study recommended the adoption of digital tools, regular stakeholder training, and culturally adaptive engagement practices.
Originality/Value: The study helps project managers to appreciate various dynamics of stakeholder engagement and project performance in resource-constrained and conflict-affected road infrastructure projects. Equally, policy makers benefit when designing and implementing policies that enhance stakeholder engagement for effective project outcomes. Therefore, future studies can refine and expand literature on stakeholder management and project performance
PROPOSAL FOR INTEGRATION OF PHOTOVOLTAIC AND THERMAL ENERGY SYSTEMS AS AN ELECTRIC MACROSYSTEM OF THE STATE OF RORAIMA, BRAZIL
Get PDFTheoretical Framework: The theoretical basis of this study is the fundamentals of thermoelectric and photovoltaic energy generation viewed from the perspective of systems theory. Integration conforms to the macrosystem, whose components are the two systems to be integrated, operating according to systemic principles: interdependence, equifinality, and homeostasis.
Method: The methodology adopted for this research included a literature review (bibliographic research) in conjunction with the observation and analysis of the functioning of energy systems that operate separately.
Results and Discussion: The results obtained revealed the possibility of integrating the systems. In the discussion section, these results are contextualized within the theoretical framework, highlighting the normative implications and relationships emanating from the regulatory agency. Possible adversities for execution may originate from the different voltage ranges that need to be made available to consumers.
Research Implications: The practical and theoretical implications of this research are methodological, as the study presents the materials and procedures necessary for integrating systems, specified through an examination of the real situation in the state of Roraima.
Originality/Value: This study contributes to the literature by presenting a systematic integration of energy generation systems that utilize both fossil fuels and renewable energies, in pursuit of a future with predominantly sustainable energy availability
EVALUATION OF GALVANIC ANODES CAPACITY AS PER NACE TM0190-98 TEST METHOD
Get PDFObjective: To evaluate galvanic anodes used for cathodic protection system in accordance with the industry standards established by NACE in the testing method document NACE TM 0190. The primary objective of this project is to evaluate the effectiveness, performance, and lifespan of different galvanic anodes under various environmental conditions. This includes assessing factors such as material composition, anode design, and installation parameters to optimize cathodic protection strategies.
Theoretical Framework: The test was conducted by passing a fixed direct current through test cells electrically connected in series. Testing anode castings for quality and output is an essential part of the bulk anode manufacturing process. The testing should be carried out as part of the manufacturing process control regime. Part of the qualification process is to test samples of their anodes against 17-SAMSS006 requirements including expected life time. These anodes are rated for long term life and any substandard anodes will end up affecting the integrity and safety of company assets, people and environment in addition to the installation and operations interruptions
Method: NACE TM 0190.and other international standards or recommended practices are usually selected to draft technical specifications for cathodic protection of offshore engineering projects. These technical specifications cover similar criteria to ensure the quality of sacrificial anodes for Cathodic Protection such as technical requirements, inspection, chemical composition and electrochemical performance. However, each project has its own complexity and performance requirement, due to the different operating condition (environment) of the assets and the actual usage condition of the sacrificial anode. Therefore, the quality and performance parameters of the sacrificial anode need to be stated carefully and in detail, in the specification to cover all the potential risks involved in the project. At present, the design (service) life of offshore oil engineering equipment/structure is over 25 years, similar to the design life of sacrificial anodes (25 years). Therefore, ensuring the long-term performance of sacrificial anodes is an important factor to ensure the safety/integrity of offshore assets. The test was conducted by passing a fixed direct current through test cells electrically connected in series.
Results and Discussion: The results obtained the average efficiency calculated and measuring parameters like anode potential, current output, and effective lifespan through laboratory and field tests.
Research Implications: The practical and theoretical implications of evaluation galvanic anodes used for cathodic protection system and identification of the most durable and cost-effective galvanic anodes for specific applications are discussed
Originality/Value: Evaluating galvanic anodes is essential for developing reliable cathodic protection systems which are essential for preventing corrosion of metal structures such as pipelines, storage tanks, and offshore platforms, thereby extending the lifespan of infrastructure such as pipelines, storage tanks, and offshore structures. This study contributes to the experiment matrix introducing quality control requirements at the casting stage, such as: anode size, weight, appearance, internal defects, chemical composition, electrochemical capacity. However, in engineering practice, we often find that the actual performance of the sacrificial anode does not meet the project's expectations