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OpenAccess@KU is an academic, open-access repository. It aims to collect, preserve and make Kastamonu University’s scientific output available online, without any or the least financial, legal or technical restrictions, in order to increase the impact and the visibility of the institution and its authors. It was established in 2010 to support the dissemination of knowledge produced by the University members to the wider community both locally and globally.
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A study on the effects of task diversity and skill diversity on burnout and turnover intention : Blue-collar workers in the forest products and furniture industries in Türkiye
(2025.01.01) Arabaci, Z.; Akça, C.
Purpose-The present study aims to determine the effects of task diversity and skill diversity on burnout and turnover intention. Theoretical framework-This section describes task diversity, skill diversity, burnout, and turnover intention, and presents the relationships between these variables and the research hypotheses. Design/methodology/approach-Using a cross-sectional research design, data were collected from 200 blue-collar workers in various businesses in the forest products and furniture industries in T & uuml;rkiye. The data were gathered using the Task Diversity Scale introduced by Nimon and Zigarmi (2015), the Skill Diversity Scale introduced by Eyi (2010), the Burnout Scale introduced by Kristensen et al. (2005), and the Turnover Intention Scale developed by Mobley et al. (1978). Findings-The present study revealed negative and significant relationships between task diversity and burnout, as well as turnover intention (r =-0.288; r =-0.216, respectively). Additionally, negative and significant relationships were found between skill diversity and burnout, as well as turnover intention (r =-0.348; r =-0.167, respectively). Practical & social implications of research-The results emphasize the importance of task and skill diversity in organizations in reducing employee burnout and turnover intention. Originality/value-The research was conducted in Turkish forest products and furniture sectors. By examining the possible protective effects of task and skill diversity in this sectoral context, it provides important insights into how diversity can be used to reduce employee burnout and turnover intention. In this respect, the study aims to both fill a gap in the literature and provide practical implications for managers in the relevant sectors.
Classification and Syntaxonomic Analysis of Plant Communities in the Yenice Wildlife Conservation Area, Northwestern Türkiye
(2025.01.01) Pulatoglu, A.Ö.; Güney, K.
Aim of study: The aim of the study is to reveal the vegetation structure of the study area, which is a conservation area. Area of study: The study area is the Yenice Wildlife Conservation Area in Karab & uuml;k which is located in the western Black Sea region in T & uuml;rkiye. Material and method: In order to determine the relationship of the plants in the area with their environment, 120 relev & eacute;s were determined by taking into account the habitat, vegetation and floristic composition from different vegetation types. The tables were evaluated by using the "Braun-Blanquet method" in the interpretation of the vegetation of the study area. In addition, the JUICE 7.0 program was used to determine the diagnostic, constant and dominant species objectively. The naming of the determined sociological units was made according to the "International Code of Phytosociological Nomenclature". Main results: The dominant vegetation type of the study area which includes many ecosystems such as forest, pseudomaquis, Aand riparian ecosystem due to its biogeographic location, is forest formation. According to the Braun-Blanquet method, 4 plant associations belonging to forest vegetation were determined. Research highlights: Corno mas-Quercetum ibericae ass. nova and Saniculo-Abietum equi-trojani ass. nova are new to the plant science.
Determination of Antimicrobial and Antioxidant Activity of Atropa belladonna L.
(2025.01.01) Sayim, M.Ü.; Pala, R.; Yaman, C.; Gül, G.; Benek, A.; Turu, D.; Bozyel, M.E.; Canli, K.
Aim of study: Bacteria that have developed resistance to antibiotics have become one of the major challenges facing global healthcare systems. This study evaluates the antimicrobial and antioxidant effects of Atropa belladonna extracts against an extended variety of microbial strains, addressing the urgent need due to increasing resistance. Material and method: In this study, disc diffusion, minimum inhibitory concentration testing, and DPPH antioxidant analyses were conducted on the Atropa belladonna plant. Main results: Using the ethanol extract, antimicrobial activity was tested against 26 bacterial and one yeast strain by disc diffusion, showing inhibitory effects on six microorganisms (four standard strains and two food isolates). MIC assays identified activity against Bacillus subtilis DSMZ 1971, Candida albicans DSMZ 1386, and Enterococcus durans. The DPPH assay demonstrated the greatest antioxidant activity at 200 mg/mL concentration, reaching 71.34%. Research highlights: The study results emphasize the need to consider Atropa belladonna's antimicrobial and antioxidant capacities. Therefore, the study should be combined with various doses, strains, or methods.
Determination of The Effects of Different Silvicultural Treatments on Soil Respiration, Temperature and Moisture Properties in The Skidding Trail Depending on Topographic Factors
(2025.01.01) Genç, Ç.; Karayigit, H.K.
Aim of study: This study investigates how silvicultural treatments and skid trails influence soil respiration in relation to soil moisture, temperature, and topographic factors within forest ecosystems. Area of study: This study was carried out depending on topographical factors (slope, aspect, elevations) as a result of silvicultural treatments in Pinus nigra stands in Kastamonu Forestry Regional Directorate Daday Business Directorate. Material and method: Soil respiration, temperature and moisture measurements were made at different slope, elevation and aspect groups from the control points and skidding trail for regeneration and tending treatments. Main results: Silvicultural treatments did not significantly affect soil respiration or moisture on skid trails, while soil temperature was influential in both treatments. Elevation was the most important topographic factor, affecting all soil properties. Slope influenced only soil moisture, whereas aspect affected respiration and moisture but not temperature. Highlights: The study provides insights into how skid trails from different silvicultural treatments impact soil properties and underlines the importance of ecologically based approaches for sustainable forest management.
Characterization of Aroma Components by HPLC-DAD and HS-SPME/GC-MS of Whortleberry and Bilberry Fruits (Vaccinium arctostaphylos L. and Vaccinium myrtillus L.)
(2025.01.01) Öz, M.; Fidan, M.S.; Baltaci, C.
In this study; aroma components, some biochemical properties (sugar amount (HPLC-DAD), vitamin C amount, water-soluble solids amount) and antioxidant capacities (bioactive component contents and antioxidant capacity amounts) of V. arctostaphylos and V. myrtillus fruits were determined. Methanol extraction was applied to the fruit samples, which were made homogeneous after being shredded. Aroma (volatile) components were determined by HS-SPME/GC-MS (Headspace-Solid Phase Micro Extraction) technique combined with Gas Chromatography-Mass Spectrometry. Total antioxidant activity (TAC), total phenolic substance amounts (TPC) and total flavonoid substance amounts (TFC), which are among the bioactive component contents, were examined. As antioxidant capacity, the amount of free radical scavenging (DPPH and ABTS) activity and the amount of ferric (III) ion reducing antioxidant power (FRAP) capacity were determined. As a result of the analyses, 27 and 33 aroma compounds were determined in V. arctostaphylos and V. myrtillus fruits, respectively. The main components found among the aroma compounds are alpha-terpineol (22.67%), (E)-2-hexenal (17.63%), and linalool (9.78%). in the V. arctostaphylos fruit. V. myrtillus fruits were determined to contain menthol (22.93%), alpha-eudesmol (11.50%), and germacrene D (8.33%). In addition, the chemical classes of aroma compounds identified were monoterpenoid, aldehyde, hydrocarbon, alcohol, ester, sesquiterpene, and sesquiterpenoid classes in V. arctostaphylos and V. myrtillus fruits. Moreover, the total sugar amount in V. arctostaphylos fruits was found to be 11.30%, and the total sugar amount in V. myrtillus fruits was 13.94%. The amount of vitamin C in V. arctostaphylos fruits was detected as 33.26 mg/kg, and the amount of vitamin C in V. myrtillus fruits was contained as 44.17 mg/kg. The amount of water-soluble solids in V. arctostaphylos and V. myrtillus fruits was determined to be 12.13% and 13.43%, respectively. The amounts of total sugar, vitamin C and water-soluble solids in V. myrtillus fruits were higher than the amounts in V. arctostaphylos fruits. According to the antioxidant results, the TAC, TPC, DPPH, ABTS and FRAP values of the methanol extract obtained from V. myrtillus fruits, excluding TFC, demonstrated higher antioxidant features than the values attained from V. arctostaphylos fruits.