Welcome to the Open Access System!
OpenAccess@KU is the Academic Open Access System of Kastamonu University. It was established in June 2014 to digitally store and open access the academic outputs of Kastamonu University in international standards. OpenAccess@KU includes academic outputs such as articles, presentations, thesis, books, book chapters, reports produced within the body of Kastamonu University.
Kastamonu Üniversitesi Akademik Arşivi Creative Commons Alıntı-GayriTicari-Türetilemez 4.0 Uluslararası Lisansı ile lisanslanmıştır.
Recent Submissions
Bio-Sensing of [S & N]–Heterocyclic Carbene Corrosion Inhibitors by Sn–Embellished on the Al-Mg Crystal Surface: A DFT Study
(AMG Transcend Association, 2024) Mollaamin, F.; Naghsh, F.; Soofi, N.S.; Zare, K.
The partial electron density states (PDOS) have described an obvious charge accumulation between the Al–Mg alloy and the doped atom of Sn through the recognition of the conduction band region. The physicochemical properties of adsorption on the nanosurface are one of the fundamental parameters for determining and choosing the Langmuir adsorption through IR, NMR, UV-VIS, and HOMO/LUMO and charge distribution results. Therefore, in this article, the ONIOM approach has been performed with a three-layered level of the high level of DFT method using EPR-III, 6-31+G (d,p) and LANL2DZ basis sets by the physicochemical software of Gaussian 16 revision C.01, a medium semi-active part that includes important electronic contributions, and a low-level part that has been handled using MM2 force field approaches. Comparing to (Formula presented) amounts approved a good agreement among computed results, as well as the correctness of the selected isotherm for the adsorption process of benzotriazole → Al-Mg-Sn, 2-mercaptobenzothiazole→ Al-Mg-Sn, 8-hydroxyquinoline → Al-Mg-Sn, and 3-amino-1, 2, 4-triazole-5-thiol → Al-Mg-Sn. The infrared spectra for each of these inhibitor-metal alloy surface have been introduced in the frequency range around 500cm-1-4500cm-1 for benzotriazole → Al-Mg-Sn, 2-mercaptobenzothiazole → Al-Mg-Sn, 8-hydroxyquinoline → Al-Mg-Sn and 3-amino-1, 2, 4-triazole-5-thiol → Al-Mg-Sn with the sharpest peak approximately around 1750cm-1 for benzotriazole → Al-Mg-Sn, 2000cm-1 for 2-mercaptobenzothiazole → Al-Mg-Sn, 3000cm-1 for 8-hydroxyquinoline → Al-Mg-Sn and 3900cm-1 for 3-amino-1, 2, 4-triazole-5-thiol → Al-Mg-Sn. Nuclear magnetic resonance has certainly focused on aluminum shielding in the intra-atomic interaction with aluminum, magnesium, and silicon and simultaneously interatomic interaction with other atoms in organic inhibitors through a variety of high, medium, and low layers of ONIOM methods. Al-Sn(14), Al-Sn(19), and Al-Sn(21) in the Al-Mg-Sn alloy surface with the highest fluctuation in the shielding tensors of NMR spectrum generated by intra-atomic interaction direct us to the most influence in the neighbor atoms generated by interatomic reactions of N→Al, O→ Al, S→ Al through the coating and adsorbing process of Langmuir adsorption. Moreover, based on the computed amounts of UV-VIS spectra for benzotriazole, mercaptobenzothiazole, 8-hydroxyquinoline and 3-amino-1, 2, 4-triazole-5-thiol adsorbed on the Al-Mg-Sn alloy surface, there are maximum adsorption bands between 500nm-2000nm wavelengths for these organic heterocyclic inhibitors joint metal alloy which has illustrated a certain peak with approximately 1000nm wavelength.
Examining the Volunteering Perspectives of Individuals Participating in Child Welfare Volunteer Activities
(2024.01.01) Aslan, H.; Tuncay, T.
Acts of volunteerism can be observed in schools, hospitals, and religious institutions, as well as and even more so in nearby streets and apartments. Volunteering behaviors mean different things in different societies based on economic, social, and cultural reasons. While volunteering may sometimes be perceived only as a philanthropic behavior, other times it is considered as the behaviors that contribute to economic development. The opinions of volunteers and administrators working in this field play a significant role in uncovering these meanings. In this context, the study aims to investigate the perceptions that volunteers and managers who participate in T & uuml;rkiye's child welfare volunteer activities have toward volunteering based on their experiences volunteering in this field. The field of child welfare is considered a source of intense participation in terms of volunteer work in T & uuml;rkiye. Therefore, this study has conducted in-depth interviews with 60 volunteers in the field of child welfare. The research has preferred the qualitative research method and phenomenological research design within its scope. The participants' narratives have been analyzed thematically, with three themes being identified and discussed in detail regarding their perspectives: the personal level, the family and social environment level, and the societal level. These themes reveal the importance of understanding how volunteering is perceived in T & uuml;rkiye. The research has concluded that individuals' personal experiences and the perspectives of family, friends, and the society in which one lives are able to affect one's perceptions about volunteering. Conducting future research on the subject as well as studies on areas where volunteering activities are frequently involved, such as elderly welfare, violence against women and women's rights, disaster situations, and how to protect the natural environment, may enable a more holistic perspective to be formed in order to reveal how volunteering efforts are perceived in different social services fields.
Experiences, health needs, and access to health services of university students with female circumcision: A qualitative study
(John Wiley and Sons Inc, 2024) Evrenol, S.Ö.; Şimşek, Ş.Ç.
Aims: This study aimed to assess the female circumcision (FC) experiences, healthcare needs, and access to health services of foreign university students who are victims of female genital mutilation and studying in Turkey. Methods: This descriptive qualitative study was conducted in the Faculty of Health Science in a state university in Turkey from December 2021 to January 2022. Eight students who had been subjected to FC participated in this study. Data were collected by conducting in-depth, semistructured online interviews and using a pilot-tested interview guide. The data were analyzed using inductive thematic analysis. Results: Four themes emerged: “reasons for performing FC, ‘health effects of FC,’ ‘psychological problems linked to FC,’ and ‘FC survivors' access to health services.’” Students stated that they exposed to this practice because of limiting their womanhood, they experienced problems, such as pelvic pain, infection, loss of sexuality, fear of pregnancy and birth, and they had healthcare needs due to FC but face some barriers. Conclusions: FC negatively affects women's health and has specific healthcare needs. Studying in a different country can be turned into an opportunity to solve the health problems they experience. For this, the right approach with knowledgeable and culturally sensitive health professionals can change stereotypes towards practice.
In vitro and in vivo effects of commercial and environmental microplastics on Unio delicatus
(2024) Yüce, P.A.; Günal, A.Ç.; Erkmen, B.; Dikmen, B.Y.; Çağan, A.S.; Çırak, T.; Kankılıç, G.B.; Seyfe, M.; Filazi, A.; Tavşanoğlu, Ü.N.
Microplastics (MPs) are ubiquitous pollutants in freshwater environments. In this study, freshwater mussels, Unio delicatus, were exposed to both environmental MPs (e-MP) and commercial MPs (c-MP) that include green fluorescent MP (gf-MP), polyethylene (c-PE) and polystyrene (c-PS) at environmental concentrations (5 mg/L and 50 mg/L) over duration of 7 and 30 days. According to in vivo experiment results, both e-MPs and c-MPs induced significant changes in the total hemocyte counts of mussels (p < 0.05). Exposure to high concentrations of e-MPs and c-MPs for 7 days led to decreased cellular glutathione levels in the mussels, while exposure to low concentrations of e-MPs and c-PS for 7 days resulted in increased advanced oxidation protein products (AOPP). Mussels exposed to high concentrations of e-MPs for 30 days exhibited decreases in both glutathione levels and AOPP values. Although no damage was observed in tissues other than gills and digestive gland, histopathological alterations were observed in these tissues following exposure to 50 mg/L c-MPs. Additionally, MPs were observed in the intestine tissues. In vitro experiments using the MTT assay showed no significant difference in cell viability between the MP-exposed group and the control group at tested concentrations, with no observed dose-response relationship (p > 0.05). Nevertheless, certain cells exhibited signs of cell death, such as disrupted cellular structures, condensed nuclei, and loss of cellular integrity. These observations were consistent with mechanical compression, indicating that physical contact with MPs may result in cell damage or death. These findings demonstrate that environmentally relevant concentrations of MPs have toxic effects on freshwater mussels and multiple parameters provide valuable insight for the evaluation of health risks of organisms.
Assessing Heavy Metal Contamination in Commonly Used Fertilizers for Polyculture Fish Ponds and Its Implications for Human Health: A Comprehensive Investigation.
(2024-10-12) Naz, Saira; Arshad, Madeeha; Majeed, Saima; Maqaddas, Sawera; Habib, Syed Sikandar; Kesbiç, Osman Sabri; Al-Rejaie, Salim S; Mohany, Mohamed; Bottari, Teresa; Aragona, Francesca; Fazio, Francesco
Over-fertilizing fish ponds can cause pollution, introducing heavy metals into the food chain and posing health risks. The present study investigated the incidence of heavy metals (Pb, Cu, Cd, and Cr) in commonly applied fertilizers, including nitrogen, phosphorus and potassium (NPK), triple superphosphate (TSP), and di-ammonium phosphate (DAP), and their association with heavy metals in water, sediment, and cultured fish species (Catla catla, Labeo rohita, and Cyprinus carpio) in polyculture fish ponds. The study was conducted over 4 months, with four groups in triplicates: control (no fertilizer), group 1 (NPK), group 2 (TSP), and group 3 (DAP). Heavy metal analysis was carried out using atomic absorption spectrophotometry before and after fertilizer application. Significantly (p < 0.05) higher levels of heavy metals were observed in water and sediment after applying fertilizers, with the most pronounced results in group 3 (DAP) followed by group 2 (TSP). The concentration of heavy metals was significantly (p < 0.05) higher in group 3 (DAP) fertilizers compared to other groups. Compared to the control, the concentration and bioaccumulation of heavy metals were significantly (p < 0.05) higher in the fertilizer-applied groups, with notably higher levels in group 3 (DAP). Cluster analysis and the correlation matrix did not show any significant association between the heavy metals and the fertilizers, indicating a complex interplay between the biotic and abiotic factors of the system. The health index (HI) value was < 1 in fish muscles of all studied groups, indicating the fish are safe for consumption. The study recommends monitoring and regulating fertilizer use, especially DAP, to prevent heavy metal contamination, and exploring sustainable alternatives to minimize environmental and health risks.