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
Does agricultural biomass matter for environmental sustainability? Enhanced adsorption capacity of BTEX mixture using powdered activated carbon by agricultural biomass
(Springer Science and Business Media Deutschland GmbH, 2025) Isinkaralar, K.; Nurmakova, S.M.
The poor indoor air quality can be associated with the released volatile organic compounds (VOCs) from different sources. The extent of the concern may increase depending on the presence of benzene, toluene, ethylbenzene, and xylene (BTEX) and exposure to them in the indoor air. Adsorption with activated carbon, which is a very effective method, is preferred to eliminate highly volatile gaseous pollutants and reduce the extend of their negative impact. In this work, the removal efficiency of a novel activated carbons (MSRACs), prepared from stems of Corylus colurna (CCBW) by chemical processes using H2SO4, H3PO4, and HCl, was scrutinized towards BTEX pollutants. The adsorbents acquired from this lignin-based waste were investigated from porosity and surface chemistry aspects. The highest surface area of 1424 m2/g and micropore volume of 0.46 cm3/g were attained after activation of MSRAC11 adsorbent sample by H2SO4-70wt%. The performances of the fabricated adsorbent samples were evaluated and the order of MSRAC11>MSRAC24>MSRAC36 was obtained in the multiple concentrations of BTEX. This study introduces an easy method for producing efficient adsorbents from lignin-based waste for filtering indoor air and designing BTEX-capturing systems for various applications
The Association of Sarcopenia and Body Composition With Benign Positional Paroxysmal Vertigo in Older Adults
(John Wiley and Sons Inc, 2025) Demircan, S.K.; Öner, F.
Objectives: One-third of older adults suffer from dizziness and vertigo. Benign positional paroxysmal vertigo (BPPV), which occurs due to otoconia moving into the semicircular canal, is the most common vestibular disorder. We evaluated the connection between BPPV and geriatric symptoms. Methods: A comprehensive geriatric evaluation included daily living activities, Mini-Mental State Examination (MMSE), and Geriatric Depression Scale tests for all patients. Patients' nutritional status was assessed using the Mini-Nutritional Assessment. Body weight and fat free mass were determined from the bioimpedance analyzer. Hand grip strength was measured using an electronic hand dynamometer to determine muscle strength. Sarcopenia was assessed using the European Working Group on Sarcopenia in Older People-2 recommendations. The patients were divided into three groups as BPPV-positive, BPPV-negative, and healthy (control). Results: Obesity, low muscle mass, dynapenia, gait speed, low gait speed, and history of falling statistically significantly differed between the three groups, but age, gender, smoking, alcohol consumption, body mass index, MMSE, depression, number of falls, and comorbid diseases did not differ. The BPPV-positive group had greater rates of obesity, low muscle mass, dynapenia, and sarcopenia than the control group (p = 0.008, 0.007, 0.01, 0.03). In the unadjusted univariate analysis, low muscle mass, sarcopenia, and obesity were risk factors for “BPPV” (Odds Ratio [OR]: 3.43, Confidence Interval [Cl]: 1.25–9.37, p = 0.016; OR: 3.47, Cl: 1.32–9.13, p = 0.011; OR: 2.71, Cl: 1.09–6.70, p = 0.031). Conclusions: Obesity, sarcopenia, and low muscle mass are risk factors for BPPV, and we urge the older population to adopt healthy diet and exercise regimens to reduce BPPV-related falls. Level of Evidence: Level 3 Laryngoscope, 2025.
High-Sensitive Cardiac Troponin I and Th1/Th2 Polarization in Queens With Pyometra
(John Wiley and Sons Inc, 2025) Safak, T.; Saat, N.; Yilmaz-Koc, O.; Turanli, M.; Ayalp-Erkan, A.; Risvanli, A.
Objectives: To determine T helper (Th)1 and Th2 cytokine polarization, as well as high-sensitive cardiac troponin I (hs-cTnI) levels, in cats with pyometra. Methods: We used 40 queens in the study. A total of 20 out of these 40 queens were diagnosed with the pyometra group (PYO) and the other 20 made up the healthy group (control; CTR). We measured concentrations of hs-cTnI, aspartate aminotransferase (AST), creatine kinase (CK) and l-lactate in queens from both groups. Additionally, we measured cytokine concentrations in all queens. Results: The hs-cTnI concentration in the PYO group (26.95 ± 5.08 ng/L) was significantly higher than that of the CTR group (7.00 ± 0.82 ng/L) (p < 0.000). Furthermore, the PYO group had a higher CK concentration (344.50 ± 39.63 U/L) than the CTR group (191.00 ± 15.44 U/L) (p = 0.002). The PYO group also demonstrated higher concentrations of TNF-α (9.77 ± 0.81 ng/mL), IFN-γ (25.37 ± 2.09 ng/mL), IL-2 (4.37 ± 0.39 ng/mL), IL-4 (245.64 ± 15.83 pg/mL), IL-5 (63.13 ± 1.65 pg/mL) and IL-10 (123.58 ± 4.30 ng/mL) compared to the CTR group (p < 0.000). Conclusions: Overall, it is suggested that changes in cytokine concentrations increase in queens with pyometra, potentially causing harm to the heart muscle. It is crucial to consider that the heart muscle may also be affected in queens with pyometra during the treatment process.
A glimpse on influences of ginger and its derivatives as a feed additive in finfish farming: A mini-review
(Elsevier Ltd, 2025) Wei, L.S.; Tahiluddin, A.B.; Wee, W.
Ginger (Zingiber officinale) has emerged as a promising feed additive in aquaculture due to its reported benefits for fish health and growth. Possessing a range of bioactive compounds, ginger exhibits antimicrobial, anti-parasite, immunostimulatory, anti-inflammatory, anti-oxidative, and growth-promoting properties. This review provides a comprehensive overview of recent research on dietary ginger and its derivatives for fish. It explores the various forms, bioactive compounds, biological activities, and preparation methods of these feed additives. The discussion focuses on the impacts of dietary ginger and its derivatives on growth performance, flesh quality, hematology profile, antioxidative responses, immune system, and disease resistance stimulation in fish. Additionally, the review examines the mechanisms of action of these additives and explores the optimal supplementation levels for inclusion in fish diets. Previous studies reported the optimal doses of dietary ginger and its derivatives were ranged from 0.0002 to 4 % of diet whereas 0.0004 % for bathing treatment. Bioactive compounds such as phenolic acids, flavonoids, zingerone, gingerols, shogaols, and paradols were responsible to the ginger and its derivatives beneficial effects. Overall, the findings suggest that dietary ginger and its derivatives hold significant promise for enhancing growth and health in fish farming.
Absorption, Steady-State Fluorescence and Solvent Effect Studies of Fluorescent Haloarchaeal Bacterioruberin
(2025) Zurnacı, M.; Kesbiç, F.I.
Fluorescence characterization of halophilic archaeal C50 carotenoid-bacterioruberin extracts was investigated using UV/Vis and steady-state fluorescence spectrophotometry in solvents with different polarity. Different extracts showed maximum absorption and fluorescence wavelengths between 369-536 nm and 540-569 nm. Stokes' shifts varied between 50-79 nm depending on the solvent. In particular, water extract showed significant Stokes' shifts with the increase in polarity index; however, fluorescence wavelength (band position) and shape were found to be independent of polarity. According to the obtained results, it is thought that bacterioruberin will be a new alternative material with increasing applications in optics, biosensor/chemosensor, biotechnology, analytical chemistry and nanotechnology due to its fluorescence properties.