Scientific papers 2025
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01 - Cellular Mechanisms of Oxygen Transport Hemoglobin Dynamics
Authors: Indunil Karunarathna, Sanjeewa Dius, R Ranwala, Sau Bandara, Sanjaya Godage, PN Rodrigo, Asoka Jayawardana, U Vidanagama, Cam Fernando, Upul Ekanayake, T Hapuarachchi, Prasanna Gunasena, P Aluthge, Nihal Perera , Senaka Gunathilake, Kapila De Alvis , Kapila Gunawardana, Samadi Rajapaksha, A Warnakulasooriya , P Athulgama Student performance is key for solving learning issues and measuring outcomes. This paper suggests a machine learning method to predict student performance in online learning by analyzing eleven behavioral indicators. Results highlight the link between students' learning initiative and duration, significantly impacting performance prediction.
02 - Machine learning approach to student performance prediction of online learning.
Author: Jing Wang, Yun Yu Student performance is important for solving learning problems and measuring outcomes. This paper presents a machine learning method to predict student performance in online learning. Eleven behavioral indicators are analyzed, filtering out weakly correlated ones. The logistic regression model shows better prediction ability, highlighting the link between student initiative, learning duration, and performance.
03 - Therapeutic delivery of oxygen using artificial oxygen carriers demonstrates the possibility of treating a wide range of diseases.
Authors: Nijaya Mohanto, Himangsu Monda, Young- Joon Park, and Jun-Pil Jee Artificial oxygen carriers may replace red blood cells in cases of significant blood loss from accidents, surgeries, trauma, and more. They show promise for treating various diseases. There is a need for stable, non-toxic carriers amid challenges. This paper reviews different types of artificial carriers, their effects, and ongoing research.
04 - An Overview of Rebreather Trimix Diving Practices in France and Self-reported Accidentology.
Authors: E. Gouin, F. Guerrero, J-É. Blatteau This study assessed practices and accidents in trimix rebreather diving. An anonymous survey was shared with certified trimix divers in France, gathering data on demographics, planning, and abnormal symptoms during dives. Results showed a predominantly male population with high certification levels. Many divers experienced gas toxicity symptoms and decompression incidents. The study highlights the need for better data and continued research on decompression and its physiological effects.
05 - In-water Electrical Impedance Tomography: EIT and the Sea
Author: Andy Adler, Tarek el Harake, Martina Mosing, Andreas Fahlman Electrical impedance tomography (EIT) can provide valuable information on ventilation in humans and land mammals, particularly in sea mammals and human divers. However, in-water use is challenging due to the conductive nature of sea water. This study demonstrates that EIT can produce reasonable images with an outer insulating layer and custom belts, demonstrating its feasibility with appropriate techniques.
06 - Hydrogen and oxygen isotopes in vertebrate tissues vary by diet type
Authors: Linda M. Reynard, Jennifer N. Leichliter, Daniela E. Winkler, Marcus Clauss, and Thomas Tütken This study investigates the isotopic variation in diet components and diet type across different taxa in rats, guinea pigs, and quail. The diet to tissue offsets for d2H and d18O of tissue-bound organic matter in muscle and dentine collagen were found to vary by diet type. The study also found large variation in Dd2H and Dd18O by tissue type and moderate differences by species. This isotopic variability is crucial for studies such as migratory research, diet reconstructions, and climate inferences, especially in species with varying dietary habits.
07 - Divergent thinking in groups during cold-water immersion is impaired by cold stress not the cold shock response
Authors: Max Kailler Smith, Rebecca Weller, Tony Duong, Rebecca McClintock, Matthew Peterson, Nathaniel Barr, Douglas M. Jones, and Timothy L. Dunn Examining the impact of cold shock response on higher- level thinking in active duty service members during a 13- minute cold-water immersion revealed no relationship between the magnitude of cold shock response and DAT performance. However, those with lower skin temperatures performed worse on the Divergent Association Task. This study suggests that the ability to engage in divergent thinking is relatively preserved during the critical ~10-minute window, although skin cooling may bias attention toward cold stress, affecting task performance.
08 - The Impact of Recreational Diving to a Depth of 40 m on Selected Intracellular DAMPs
Authors: Anna Nowakowska, Małgorzata Marchelek-My´sliwiec, Marta Skórka-Majewicz, Wojciech ˙Zwierełło, Konrad Grzeszczak, and Izabela Gutowska Recreational diving, a popular activity under extreme environmental conditions, can induce increased levels of reactive oxygen and nitrogen species in the body, potentially modulating damage-associated molecular patterns (DAMPs), their receptors, and antioxidant response. Diving also influenced the expression of genes encoding key enzymes associated with glutathione synthesis and reduced plasma glutathione levels. However, the study found that key inflammation-related molecules (NF-rB, NOS2, TLR4, RAGE) did not change significantly.
09 - Measuring the research productivity on environmental toxicology: A scientometric study
Authors: Shanmuganathi Ayyankalai, Srinivasaragavan Subburaj, Prasanna Kumari Nataraj This paper analyzes the growth and development of Environmental Toxicology literature, revealing 6,663 publications in 2022, with 183279 Citations. The most productive countries are the USA, China, Germany, Canada, and England. Highly cited journals include Environmental Toxicology and Chemistry, Integrated Environmental Assessment and Management, Environmental Health Perspectives, and Toxicological Sciences.
10 - The Impact of Recreational Diving to a Depth of 40 m on Selected Intracellular DAMPs
Authors: Anna Nowakowska, Małgorzata Marchelek-Mysliwiec, Marta Skórka-Majewicz, Wojciech ˙Zwierełło, Konrad Grzeszczak, and Izabela Gutowska Recreational diving can affect the body due to extreme conditions, such as high oxygen and pressure, which increase reactive oxygen and nitrogen species. A study involving 21 divers at a depth of 40 meters analyzed various intracellular damage markers before and after diving. There was a significant decrease in molecules released by cells in response to stress, injury, or inflammation, one hour later, indicating an adaptive response to oxidative stress.
Authors: Sandra Arhesa, Amung Ma’mun, Boyke Mulyana, Nina Sutresna, Silvia Agustin This study explores the freediving abilities of the Bajo people in Wakatobi, Indonesia. Using a qualitative case study approach, data was collected from 20 informants. Thematic analysis revealed key aspects of Bajo diving, including factors influencing performance, specific techniques, dive duration and depth, training methods, and traditional equipment. The study highlights the profound interaction between the marine environment and socio-cultural practices, distinguishing traditional methods from modern practices. The study concludes that this diving culture needs preservation and health education.
11 - Case study on the diving ability of the Bajo tribe in Indonesia
Author: Ahmet Sedat Dünda, Mucahit Oruç, Osman Celbis, Emine  Türkmen samdancı, Ayse Nur Akatlı, Hasan Okumus, Çasatay Taskapan, Onural Özhan, Hakan Parlakpınars The study aimed to determine the cause of deaths associated with electric shock, particularly those formed with water conduction. It involved 42 rats and examined serum NT-ProBNP, H-FABP levels, histopathological changes, and antibody status in various tissues. The results showed a significant difference between groups in serum H-FABP values and immunohistochemical staining. This study is the first in literature to use an experimental model of electric shock with water conduction.
12 - An experimental rat model of electric shock injury with isolated electric shock and water conduction: the histopathological changes on the skin and internal organs and the effect on biochemical Parameters.
13 - An EPHA2-centered gene regulatory network associates with hyperbaric oxygen treatment response in perianal fistulizing Crohn’s disease patients
Authors: I.C.N Fung, L.G.M. Mulders, R. Weiss, I.A.M van Thiel, K.J. Beek , I. Admiraal, C. Verseijden, J. Verhoeff, M. Zwart, M.L. Ridderikhof, J. Tielbeek, J. Stoker, R.A. van Hulst, C.J. Buskens, M.E. Wildenberg, K.B. Gecse , A.Y.F. Li Yim, W.J. de Jonge, G.R. D’Haens Perianal fistulizing Crohn's disease (PFCD) is a severe Crohn's disease complication with low long-term remission rates. Hyperbaric oxygen therapy (HBOT) has been used as an adjunct therapy to reduce disease activity and improve surgical closure.
14 - Diving into discomfort: orofacial pain dynamic: A systematic Review
Authors: Lubna A. Alolaiwi, Fawziah A. Alzahrani, and Sulaiman A. AlShammari This study investigates the prevalence of orofacial pain among divers, focusing on military, occupational, and recreational divers. A systematic literature search revealed that barodontalgia had the highest prevalence rate among the four types of orofacial pain, ranging from 10.8% to 56.1%. Periodontal issues had the lowest rate, ranging from 2.8 to 6.6%. Military divers were most affected by all types of pain. The study emphasizes the need for tailored preventive strategies, including dental care, ergonomic interventions, oral hygiene education, equipment fitting, and clenching management.
15 - Extremely deep bounce dives: planning and physiological challenges based on the experiences of a sample of French- speaking technical Divers
Authors: Emmanuel Gouin, Emmanuel Dugrenot, Bernard Gardette This study explores the limits of extreme-depth diving and strategies developed to overcome them. Eight experienced rebreather divers were interviewed about their preparation, planning, and execution of such dives. The results showed that gas density, oxygen exposure, and ascent rate exceeded current recommendations. High pressure nervous syndrome was not a major limiting factor, but decompression posed greater challenges. Decompression procedures must be adapted for these demanding mixed-gas dives, and a dry underwater habitat could improve decompression tolerance. The role of hydrogen as a breathing gas remains uncertain.
16 - Diving practices in technical divers’ community and behaviour towards self-reported unusual symptoms
Authors: Emmanuel Gouin, David PM Monnot, Thierry Michot, François Guerrero, Jean-Éric Blatteau The use of gas mixtures containing helium for deep recreational diving is becoming more common, but its risks remain poorly documented. A study analyzed 558 questionnaires from certified trimix divers, revealing that 42.2% reported medical risk factors related to diving. Rebreather use was prevalent, and decompression was primarily managed using compartmental models. Dive planning varied among individuals, and gas density at depth often exceeded current recommendations. Decompression sickness or breathing symptoms were common, but no treatment was initiated. The study suggests continued research into decompression and physiological effects, as well as awareness and education efforts in diving first aid.
17 - Mechanisms of Drowning in Children: Influence of Cold Shock Response on Repolarization Patterns and Arrhythmia Burden in Healthy Children.
Authors: Sophie Peter The study examines the effects of cold shock response in healthy children during immersion into cold water. Participants were immersed in warm water and then cold water, measuring their heart rate, heart rate, and respiratory rate. Results showed lower heart rate variability parameters in cold water, shorter Tp-Te intervals, and inadequate QT interval adaptation. No arrhythmias were detected in healthy children, but the cold shock response could induce repolarization abnormalities in individuals with pre-existing conditions. This study provides the first data on drowning mechanisms in children.