XGEN 2024 - International Conference of Scientific Communications

Organizer

Lucrarea va prezenta în prima parte metodele de obținere și caracterizarea aspirinei. De asemenea se vor caracteriza și precursorii aspirinei. În ultima parte se vor prezenta utilizările aspirinei.

Se prezinta profilul chimic, utilizari in medicina, metode de autentificare a uleiurilor de lavanda

Ce ar fi fost chimia fără femei?
Marie Curie, Raluca Ripan, Emanuelle Charpentier, Virginia Apgar, Stephanie Kwolek, sunt doar câteva dintre femeile care au marcat istoria chimiei prin cercetările și descoperirile lor.

Lucrarea va prezenta in mare parte date despre starea naturala a scortisoarei, utilizarea in industria alimentara, metode de obtinere si caracterizare. Partea experimentala s-au identificat prin cromatografia de gaze cuplat cu MS, compusii volatili din componenta scortisoarei, iar in urma documentarii din literatura s-au alocat clasele de compusi si aromele pentru fiecare compus volatil si se realizeaza prelucrarea statistica a datelor.

Termenul de “cancer” a ajuns să fie din ce în ce mai cunoscut în rândul oamenilor și ajunge să stârnească frică în majoritatea cazurilor. Leucemia reprezintă forma de cancer al sângelui-fundamentul organismului. Oamenii tind să creadă că în momentul în care aceștia suferă de leucemie, pentru ei nu mai există nicio șansă de salvare, ci doar metode care să amelioreze simptomele și efectele adverse, dar oare să fie așa? Cercetări recente au demonstrat că nanoparticulele de aur și argint pot fi folosite pentru prevenirea și chiar tratarea formelor de leucemie. Dar ce sunt aceste nanoparticule, unde se găsesc și mai important , cum pot ajuta la prevenirea și tratarea acestei "tulpini" aparținătoare "bolii secolului"?

The term “cancer” has become very known among the people and it brings fear in people’s hearts in most of the cases. Leukemia is the form of blood cancer, blood being the fundament of the organism. People tend to believe that as soon as they have been diagnosticated with leukemia, they have no chance to be saved and that there are only methods that can ameliorate the symptoms and the adverse effects, but is it that way? Recent researches have shown that gold and silver nanoparticles can be used as anticancer agents and even to treat some forms of leukemia. But what are these nanoparticles, where can they be found and the most important, how can they help to prevent and treat this form of “disease of the century”?

Presentation of the results of physico-chemical analyses, including pH, dissolved oxygen levels, nutrient concentrations (such as nitrogen and phosphorus) and the presence of hazardous chemicals in the town of Sugag, Alba County. Comparing the results of the analyzes with the water quality standards established by the sanitary or environmental authorities to assess the degree of potability of the water. Proposing measures or strategies to improve water quality in the locality, including continuous monitoring, water treatment and community involvement in protecting and conserving water sources.

Following the study carried out in the town of Zlatna, Alba county, regarding the sources of pollution and environmental polluting agents, during the research and determinations in the laboratory regarding the quality of water and soil, and from the field for the quality of air and noise, we learned the following conclusions :
The water quality investigation following the analyzes carried out in the 5 areas: upstream Ampoi River, Valea Mare tributary, Valea Morilor tributary, downstream Ampoi River, Fenesel tributary, from where I took samples, I can conclude the following: the pH was within normal limits at 4 of the 5 analyzed waters, falling between the values ​​of 7.1-7.4, but the sample from the upstream of the Ampoi river had a pH of 7.7. Conductivity was according to STAS with values ​​between 490-709 µS/cm. Turbidity was within normal limits, NO3 and NO2 were also within water quality standards, as was dissolved O2. Regarding the hardness it can be said that all the analyzed water samples are within the parameters.
The air quality investigation was carried out by measuring CO2 and SO2 using the Spark Lx Datalogger, and the values ​​obtained are normal and within the air quality standards.
The investigation of the noise sources were determined with the PeakTech 5035 digital sound level meter in three areas within the radius of the town, the highest value is due to the car traffic on the national road that crosses the town, but the values ​​obtained fall within the noise quality parameters in the towns .
Following the analyzes in the laboratory (water, soil) and in the field (air, noise), after processing the data it can be said that all the parameters analyzed regarding the possible sources of pollution in the city of Zlatna are within the parameters and the study area does not fall within the category of areas subject to different environmental pollution factors.

Lucrarea urmărește metodele de obținere și sinteză a limonelului, starea naturală a limonelului,sintezele de obținere a limonelului, reacții de obținere a altor compuși pornind de la limonel și utilizările limonelului ca substanță volatilă, ulei esențial, cu aplicații în industria alimentară și medicină.

The main aim of this paper is to give characterizations of Datko type for uniform dichotomy in mean with growth rates concept for reversible stochastic skew-evolution semiflows in Banach spaces. As particular case, we obtain integral characterizations for uniform exponential dichotomy in mean and uniform polynomial dichotomy in mean.
The obtained results are generalizations of well-known theorems about uniform h-dichotomy of variational systems in deterministic case.

Abstract: The paper presents some characterizations for two concepts of nonuniform dichotomy with growth rates of discrete-time systems in Banach spaces.

Abstract: - In this paper it is demonstrated that a wind turbine, WT, which is operating at maximum power point, MPP, at significantly varying wind speeds large variations in the power injected into the grid occur. These power variations can be compensated if the wind system has storage facilities for captured wind energy. This experimental data from a 2.5 [MW] WT in operation in the Dobrogea area are processed.

Author: Alec Adrian

   Abstract

In this article I presented a research based on real data regarding the population's desire to apply economic reform in the tourism sector.
In the first part I presented the main tools that create an ideal economy. I applied a questionnaire to a number of 150 people from the territory of Romania aged between 20-56 years.
The questions focused on discovering the perspectives of the participants regarding the desire for economic reform, the importance of the measures to be applied to reform the economy and the desire to apply economic reform in the tourism branch through the National Unique
Tourism strategy, under the Perfection Place project.
Based on the results of the questionnaire, it was found that the motivation and desire for change in this sample is very high. For the research we chose the survey method using the
questionnaire as a data collection method.
All great projects can only be realized through the unity of society mobilized towards the greatest ideals.

   Keywords: circular economy, sustenability, leadership, strategic management, progress, well-being

Environmental, social and governance (ESG) risks, considered a component of operational risk, can also generate the materialization of credit risk. The issue of implementing ESG factors in the lending process and developing products based on sustainability principles, with positive effects on both the environment and society, as well as banking performance, is acutely raised. Banks whose credit analysis processes include ESG risk factors report better financial performance and note that the failure of credit institutions to address environmental, social and governance factors affects the sustainability of the businesses they finance.

This study provides a comprehensive examination of AI-driven recommendation systems, acknowledging their multidisciplinary nature and the various academic perspectives that contribute to understanding their complexity. With a focus on the retail sector, the research investigates user attitudes towards the increasingly personalized consumer environment, particularly in regard to privacy concerns, and examines the consequent impact on customer experiences.
Employing a qualitative research methodology, this study examines existing AI recommendation systems through a comprehensive literature review and in-depth case studies. Prominent online platforms such as Netflix and Amazon, the paper highlights the substantial economic benefits derived from AI personalization. Drawing insights from industry examples, including the infamous Facebook Beacon controversy, the research underscores the fine balance between leveraging personal data for customization and maintaining user privacy. The paper offers a balanced perspective on the advantages of AI in recommendation systems while highlighting the urgent need for ethical frameworks to govern their use.
The findings indicate that advanced personalization techniques contribute to enhanced user satisfaction and improved business outcomes. However, these systems also pose challenges, especially in the realm of user privacy and data ethics.

In the knowledge-based economy era, organizations face increasing challenges in capturing, managing, and effectively leveraging knowledge. Artificial intelligence (AI) offers a promising solution to overcome these challenges and transform the way organizations manage knowledge. In this context, this article aims to explore the role of artificial intelligence in knowledge management, by analyzing how AI technologies, such as machine learning, can be used to improve knowledge management processes. The paper provides insights into how artificial intelligence can complement knowledge management. Furthermore, practical recommendations for AI solutions and for improving knowledge management practices within organizations are presented.

.

During 2023, we conducted qualitative and quantitative research on the edaphic coleopteran fauna of the Sub Arini Park, located in the city of Sibiu, Romania. The aim of the study was to inventory the diversity and distribution of coleopteran populations in this urban park. The main objectives of the research included the identification of the species of coleoptera present in the park, the investigation of their ecological characteristics, as well as the analysis of preferred habitats and their variation in terms of time and space.
Between April and October of 2023, we placed a number of 17 soil traps on an area of ​​21.65 hectares, covering the entire area of ​​the park. These traps were checked and lifted weekly to collect relevant data on the beetle populations. In total, we identified 26 species of coleopterans belonging to 8 families, totaling 2118 specimens.
Based on the data obtained from the faunal samples, we performed ecological analyzes for all investigated habitats, covering the vernal, summer and autumnal seasons. For each individual species, we have calculated ecological indices.

The identification and prevalence of Trichomonas vaginalis infection in women was pursued, through the Babeş Papanicolau test collected at a gynecology office, Baia Mare. During the research period (2020-2023), the identification of the etiological agents detected, the prevalence of contamination, the distribution by age groups, residence and level of studies were pursued. The data were centralized in tables, using the percentage calculation method, and the results were plotted. Out of a number of 2,531 investigated patients, 39 positive were diagnosed for parasitosis 2020 (2.76%), 2021 (1.73%), 2022 (1.10%), 2023 (0.65), decrease probably due to the pandemic.

Buna ziua!
Aici este abstractul lucrarii noastre.
Multumim!

Reinforcement Learning (RL] stands as a fundamental approach for optimization problems, characterized by an iterative experimentation to maximize the cumulative reward of an agent performing in its environment. This paper highlights how game engines serve as the perfect training environments for intelligent agents, leveraging state-of-the-art RL algorithms.

This paper is authored by Sami Bărbuț-Dică, student at the University of Craiova, under the guidance of Conf. dr. Mirel Coșulschi and presents a comprehensive examination of the development life cycle of Pantheonix, an advanced online judging system (OJS) characterized by its microservices architecture. Leveraging a myriad of cutting-edge technologies, including Docker for containerization, Docker Compose for orchestration, and Dapr for service mesh integration, Pantheonix exemplifies the pinnacle of modern software engineering practices. By exploring the intricacies of domain-driven analysis, microservices design, and operational paradigms, this paper unveils the rich tapestry of technologies underpinning the Pantheonix platform. From MongoDB and PostgreSQL for database persistence, Envoy for API gateway management and Redis for state storage to Rust and .NET for backend and Flutter for frontend, each technology plays a vital role in ensuring the scalability, reliability, and security of the Pantheonix ecosystem.

Working machines are largely used in industrial environments for production of items and generate lots of data following these processes. The proper operation of machines influence the production output, thus detection of anomalies in machines activities is a crucial thing for avoiding awful outcomes. This paper present an ensemble unsupersived anomaly detection method able to handle aspects such as efficiency and data volume. Proposed method consists of 2 stages: in the first stage, statistical-based methods are used to assign labels to input data, then second stage use feature bagging technique to create and train estimators later used for prediction.

Automation of agricultural processes is an ever-evolving field, seeking to improve efficiency and sustainability in food production. This paper explores the use of the Arduino platform in automating a greenhouse, providing a practical and affordable solution for plant growers. By integrating temperature, humidity, light and soil moisture sensors, the Arduino platform enables constant monitoring of environmental conditions in greenhouses and automatic adjustment of parameters to optimize plant growth. Also, the automatic control of the irrigation system contributes to the efficient management of resources and the provision of an optimal environment for plant development. Implementing this solution offers significant advantages, including increased yield, reduced water, energy consumption and reduced risk of crop loss.

The present longitudinal study investigated participants’ car use behavior for a week, by using objective mobility data collected with Google Location through participants’ smartphones. 48 residents of a large Romanian town provided their mobility data, together with their answers on a questionnaire. Several psychological, structural and contextual predictors of car use were investigated in a multilevel model with two levels. Present findings indicate that instrumental motivations such as distance needed to travel, the need to pick-up/drop-off children to/from school and the need to carry heavy objects have the largest influence on car use behavior. Additionally, access to alternative transport infrastructure and the strength of people’s car use habits also significantly influence the number of kilometers travelled by car. Psychological variables such as those described by the theory of planned behavior or norm activation model, together with weather variables such as wind speed, temperature and precipitations, did not directly influence car use behavior. Results contribute to a more comprehensive understanding of car use behavior and are relevant for policymakers and city planners in their attempts to shape a sustainable urban environment that is adapted to one of the greatest challenges of the present.