Koleksiyon/r/gumushane/10001

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Koleksiyondaki öğeler

  • MakaleYalnız künye2009Scopus SJRQ1
    Frequency optimization of laminated folded composite plates

    Topal, U.; Uzman, Ü.

    In this study, frequency optimization of symmetrically laminated folded composite plates is presented. The folded plates are modelled as a composite structure that consists of flat plates. The fundamental frequencies of one- and two-fold folded plates are maximized with respect to fibre orientations. The first-order shear deformation theory (FSDT) is used for vibration analysis of laminated folded plates. The modified feasible direction (MFD) method is used for the optimization routine. Therefore a program based on FORTRAN is used. Finally, the significant effects of length-to-thickness ratios, crank angles, different plate lengths and boundary conditions on the optimum results are demonstrated.

    AtıfScopus25OpenAlex23
    Scopusİncele
  • MakaleAçık Erişim2026Scopus SJRQ1
    Electric field–induced inflammatory and angiogenic responses in rat female reproductive tissues: evidence for early extracellular matrix remodeling

    Ozmen, Ozlem; Asci, Halil; Kolay, Oznur; Selcuk, Elif Nur; Yuksel, Duygu; Comlekci, Selcuk; Karabacak, Pinar

    High-intensity electric fields (EFs) are increasingly encountered in occupational and environmental settings, raising concerns regarding their potential biological effects on hormonally responsive organs. However, the cellular and molecular responses of female reproductive tissues to short-term exposure to high-voltage EFs remain insufficiently characterized. This study aims to investigate EF-associated histopathological and immunohistochemical alterations in major female reproductive organs. Forty adult female Wistar albino rats were randomly assigned to five experimental groups (n = 8 per group): a control group (0 min) and four EF-exposed groups subjected to a nominal electric field intensity of 10 kV/m EF for 1, 5, 15, or 30 min using a custom-designed parallel-plate exposure system. The field intensity was verified at predefined measurement points within the exposure setup. Ovaries, uterus, and uterine tubes were examined using hematoxylin–eosin staining and semi-quantitative histopathological scoring. Immunohistochemical analyses were performed to evaluate the expression of tumor necrosis factor-α (TNF-α), vascular endothelial growth factor (VEGF), and osteonectin as markers of inflammation, angiogenesis, and extracellular matrix remodeling. Exposure to the electric field was associated with time-dependent histopathological alterations, including tissue edema, hemorrhage, epithelial degeneration, and leukocyte infiltration. The most pronounced ovarian and uterine changes were observed in the 30-min exposure group, whereas the uterine tubes exhibited comparatively milder structural alterations. Immunohistochemical analysis demonstrated increased TNF-α and VEGF expression in higher-exposure groups, suggesting activation of inflammatory and angiogenic pathways. Osteonectin expression was elevated in all examined reproductive tissues and was also detected in regions without overt morphological damage, indicating its potential sensitivity to early tissue stress responses associated with EF exposure. Significant correlations were observed between histopathological injury scores and immunohistochemical marker expression levels. Overall, short-term exposure to high-intensity electric field was associated with inflammatory signaling, angiogenic responses, and extracellular matrix remodeling in female reproductive tissues in this experimental model. These findings provide histological and immunohistochemical evidence of tissue responses to EF exposure and underscore the need for further studies incorporating comprehensive exposure characterization and additional molecular endpoints to better define potential reproductive health implications to high-voltage electric fields.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus2WoS2OpenAlex2
    ScopusWeb of SciencePubMedİncele
  • MakaleYalnız künye2026Scopus SJRQ1
    Paranormal Health Beliefs in Travel Motivation and Experiences: The Case of Gırnavaz Jinn

    Şimşek Evren, Emine

    This study was conducted to determine the travel motivations and experiences of paranormal health tourists. In the study, the Gırnavaz Mound in Mardin/Türkiye, where the tomb of the leader of the first Muslim jinn is located, was analyzed. The data were collected with semi-structured interviews conducted with 15 visitors and 2 religious officials. Four main themes and six subthemes were identified during the manual content analysis process. The main themes were named “Paranormal Story: Healing Jinn,” “Motivation for Paranormal Health Tourism,” “Paranormal Health Tourism Experiences,” and “Sense of Healing: Placebo.” Findings reveal that paranormal health tourists are motivated by feelings of helplessness and belief. Their experiences are shaped by ritual participation and shared emotional exchanges with others. The peak experience—encountering a jinn leader in a dream—can be disrupted by environmental factors. Those who reach the peak experience feel a sense of healing that can be attributed to the placebo.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
  • MakaleAçık Erişim2025Scopus SJRQ1
    Evaluation of ChatGPT-4, Gemini, Claude, and Copilot in Generating Nursing Diagnoses Based on NANDA-I Taxonomy II: A Comparative Cross-Sectional Study

    Tuncer, Metin; Yalcinkaya, Turgay

    Aim: To evaluate the capability of large language models to generate nursing diagnoses based on NANDA-I Taxonomy II and assess their performance across domains and overall. Background: Large language models are emerging tools in nursing, showing potential to aid in diagnosis generation and education. However, their accuracy and applicability in clinical and educational settings remain underexplored. Methods: This cross-sectional comparative study used 10 realistic patient scenarios based on NANDA-I Taxonomy II, covering 12 domains. The study aimed to evaluate the capability of four models to generate nursing diagnoses based on patient scenarios. The responses were assessed by five nursing experts for accuracy and alignment with NANDA-I Taxonomy II in a single-blind evaluation process. Results: All models demonstrated similar performance across different domains and overall, with Claude attaining the highest overall performance score. Expert evaluations indicated moderate interrater reliability. Discussion: Small variations between models and occasional omissions suggest that expert review is still required before clinical use. Conclusions: Large language models are not yet sufficiently reliable for independent use in clinical settings and nursing education. Their application as supportive tools necessitates a cautious approach. Moreover, the development of specialized models designed to address the unique demands of the nursing field would be advantageous. Implications for nursing: When large language models are used in nursing practice, their limitations should be considered, and the outputs they produce should be verified by nurses. Implications for nursing policy: Ensuring the safe integration of artificial intelligence tools into nursing necessitates the establishment of robust regulatory policies to safeguard patient safety, the deployment of effective systems to monitor models’ performance, and the development of comprehensive guidelines and training programs.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus2WoS1OpenAlex1
    ScopusWeb of SciencePubMedİncele
  • MakaleAçık Erişim2026Scopus SJRQ4
    Determining the Factors Affecting Football Fans' Satisfaction with Video Assistant Referee (VAR) Technology; [Futbol Taraftarlarının Video Yardımcı Hakem (VAR)’e Yönelik Memnuniyetlerini Etkileyen Faktörlerin Belirlenmesi]

    Avci, İbrahim; Ayik, Öznur

    Video Assistant Referee (VAR) technology has been introduced in the sports industry as a decision support system designed to assist referees in making the correct decisions when overseeing a sporting event. In Turkey, VAR technology has been deployed to lessen controversies in football matches, but it has not completely eliminated them. As a result, it is crucial to establish whether fans, a key stakeholder in the sports sector, are satisfied with VAR technology. In this context, the study aims to investigate the effects of football fans' perceived value and identification with VAR technology on their satisfaction with it. Furthermore, the mediating role of attitudes towards the technology and the moderating role of knowledge about VAR technology will also be examined. The study used the snowball sampling method, and data were obtained via an online survey, with 411 fans participating over the data collection period. Using the fan data, Structural Equation Modeling was performed using the AMOS tool, and the study hypotheses were tested. The research revealed that identification and perceived value of VAR technology have a positive effect on satisfaction with this technology, with attitude toward technology acting as a mediator. The level of knowledge about VAR technology has a moderating effect in the relationship between satisfaction and perceived value. These findings have practical and theoretical implications for both the sports sector and the academic discipline.

  • MakaleYalnız künye2008Scopus SJRQ2
    Source rock characteristics and hydrocarbon potential of the late cretaceous deposits in the eastern black sea region, NE Turkey

    Saydam, C.; Korkmaz, S.

    In this article, source rock characteristics and hydrocarbon potential of the late Cretaceous turbidite sequences in the eastern Black Sea region were investigated. The total average organic carbon (TOC) contents of sequences in Trabzon, Gümüshane, Giresun, and Erzurum are 0.06, 0.18, 0.12, and 0.30 wt%, respectively. In addition, low potential yield (PY), low hydrogen index (HI), and very high oxygen index (OI) values were calculated for these sequences. On the basis of Tmax values, most of sequences are thermally immature, and only some parts are mature and over-mature. Sequences generally contain residual organic matter and lesser amounts of type III kerogen. CPI values higher than 1, n-alkane distributions with high carbon numbers, and type III kerogen content indicate that organic matter has a terrestrial origin. The Pr/Ph ratios calculated as 1.10 and 2.15 for the Mescitli section of the Gümüshane region and the Tortum section of the Erzurum region reveal that the Mescitli section was deposited in a suboxic environment, while the Tortum section was in an oxic environment. According to these data, late Cretaceous sequences show weak source rock characteristics.

    AtıfScopus12OpenAlex10
    Scopusİncele
  • MakaleAçık Erişim2026Scopus SJRQ2
    Immersive Virtual Reality as a Tool to Reduce Anxiety and Distress in Patients With Breast Cancer During Radiotherapy

    Aydin, Aydanur; Uslu, Gonca Hanedan; Gursoy, Ayla

    Background: – Virtual reality (VR) can be an innovative method to reduce patients’ anxiety and support their psychological health. Objective: – To evaluate the anxiety and distress-reducing effects of using immersive VR (IVR) intervention in breast cancer patients undergoing radiotherapy (RT). Methods: – Sixty breast cancer patients undergoing RT were recruited for the quasi-experimental study. The participants were divided into the intervention group and the control group. Anxiety and distress, the primary outcome measures, were assessed before the first and after the last radiation session using reliable scales. Patients in the intervention group watched a tranquil forest view with birdsong and meditation music during each RT session using IVR goggles. Results: – Both group patients had similar levels of anxiety and distress before the start of RT. After the intervention, the anxiety and distress of the patients in the intervention group decreased significantly compared with the control group. In addition, treatment-related comfort was higher in the intervention group. Overall, the majority of patients in the intervention group expressed a high level of satisfaction with this IVR experience. Conclusion: – Patients who experienced an IVR intervention showed less anxiety and distress, greater comfort, and higher satisfaction. This innovative technique can be used as a practical solution to alleviate anxiety and distress in various healthcare settings. Implications for Practice: – Immersive VR can be used in treatment and care interventions that cause anxiety and distress in oncology patients.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus6WoS5OpenAlex3
    ScopusWeb of SciencePubMedİncele
  • MakaleYalnız künye2008Scopus SJRQ1
    Petrochemistry and petrology of I-type granitoids in an arc setting: The composite Torul pluton, Eastern Pontides, NE Turkey

    Kaygusuz, Abdullah; Siebel, Wolfgang; Şen, Cüneyt; Satir, Muharrem

    The Upper Cretaceous Torul pluton, located in the Eastern Pontides, is of sub-alkaline affinity and displays features typical of volcanic arc granitoids. It is a composite pluton consisting of granodiorite, biotite hornblende monzogranite, quartz monzodiorite, quartz monzonite and hornblende biotite monzogranite. The oldest syenogranite (77.9 ± 0.3 Ma) and the youngest quartz diorite form small stocks within the pluton. Samples from the granodiorites, biotite hornblende monzogranites, quartz monzodiorites, quartz monzonites and hornblende biotite monzogranites have SiO2 between 57 and 68 wt% and display high-K calc-alkaline, metaluminous to peraluminous characteristics. Chondrite-normalized REE patterns are fractionated Lacn/Lucn = 6.0-14.2) with pronounced negative Eu anomalies (Eu/Eu* = 0.59-0.84). Initial εNd(i) values vary between -3.1 and -4.1, initial 87Sr/86 Sr values between 0.7058 and 0.7072, and δ18O values between +4.4 and +7.3‰. The quartz diorites are characterized by relatively high Mg-number of 36-38, low contents of Na2O (2.3-2.5 wt%) and SiO2 (52-55 wt%) and medium-K calc-alkaline, metaluminous composition. Chondrite-normalized REE patterns are relatively flat [(La/Yb)cn = 2.8-3.3; (Tb/Yb)cn = 1.2] and show small negative Eu anomalies (Eu/Eu*= 0.74-0.76). Compared to the other rock types, radiogenic isotope signatures of the quartz diorites show higher 87Sr/ 86Sr (0.7075-0.7079) and lower εNd(i) (-4.5 to -5.3). The syenogranites have high SiO2 (70-74 wt%) and display high-K calc-alkaline, peraluminous characteristics. Their REE patterns are characterized by higher Lacn/Lucn (12.9) and Eu/Eu* (0.76-0.77) values compared to the quartz diorites. Isotopic signatures of these rocks [εNd(i) = -4.0 to -3.3; 87Sr/86Sr(i) = 0.7034-0.7060; δ18 O = + 4.9 to + 8.2] are largely similar to the other rock types but differ from that of the quartz diorites. Fractionation of plagioclase, hornblende, pyroxene and Fe'Ti oxides played an important role in the evolution of Torul granitoids. The crystallization temperatures of the melts ranged from 800 to 900°C as determined from zircon and apatite saturation thermometry. All these characteristics, combined with low K2 O/Na2O, low Al2O3/(FeOT + MgO + TiO2), and low (Na2O + K2O)/ (FeOT + MgO + TiO2) ratios suggest an origin through dehydration melting of mafic lower crustal source rocks.

    AtıfScopus181OpenAlex156
    Scopusİncele
  • MakaleAçık Erişim2026Scopus SJRQ1
    Impact of sprouting pretreatment on physicochemical properties and in vitro digestibility of buckwheat milk

    Tunç, Merve Tuğçe; Yılmaz, Fırat; Akdoğan, Arda; Atalar, İlyas; Odabaş, Halil İbrahim

    BACKGROUND: Buckwheat is a strategic raw material for plant-based milk production due to its gluten-free nature and rich bioactive profile. However, antinutritional factors and starch structure limit the nutritional quality and technological properties of such beverages. This study aims to investigate the effects of sprouting pretreatment (0, 24, 48, and 72 h) on the physicochemical properties, rheological behavior, phytic acid content, and in vitro protein/phenolics digestibility of buckwheat milk. RESULTS: As the sprouting duration increased, the viscosity of buckwheat milk decreased from 31.42 to 15.42 mPa s (at 72 h) due to the enzymatic hydrolysis of starch and proteins. Rheological analysis revealed that all samples exhibited weak gel behavior. Color analysis showed a decrease in lightness (L*) while redness (a*) and yellowness (b*) values significantly increased with sprouting. The results showed that sprouting significantly reduced phytic acid content, reaching its minimum at 72 h. The highest in vitro protein digestibility was observed at 24 h of sprouting, after which a relative decline occurred due to the formation of protein–polyphenol complexes and metabolic amino acid utilization. Furthermore, total phenolic content, flavonoid content, and antioxidant capacities measured after in vitro digestion were substantially higher in sprouted samples, especially at 48 and 72 h, than in the control. CONCLUSION: The results indicate that a sprouting duration of 48 h represents an optimal balance for the physical stability and nutritional enhancement of buckwheat milk. At this stage, significant increases in bioaccessible phenolics were achieved while maintaining a stable colloidal structure.

    • SDG 2 · Açlığa Son
  • MakaleYalnız künye2026Scopus SJRQ3
    Determinants of sleep quality and fatigue in patients undergoing hemodialysis

    Kazak Salti, Aysun; Topali, Hasret; Türkmen, Osman Oğulcan

    Aim: This research aimed to evaluate sleep quality and fatigue among individuals undergoing hemodialysis and to explore the determinants affecting these variables. Methods: This observational investigation was carried out among 78 who were regularly receiving hemodialysis therapy. The research was carried out between May and October 2025 in three different public hospitals among individuals undergoing hemodialysis treatment. Data were gathered using the Patient Information Form (PIF), the Fatigue Severity Scale (FSS), and the Pittsburgh Sleep Quality Index (PSQI). Results: The mean score of the hemodialysis patients on the FSS is 4.97 ± 1.11, and the mean PSQI value is 7.76 ± 3.64. A moderately positive and statistically noteworthy relation was observed between the PSQI and FSS scores. Additionally, a low negative meaningful correlation was seen between ferritin levels and the FSS scores, as well as between calcium levels and the PSQI scores. The use of medications related to chronic disease and the PSQI scores were identified as significant predictors of the FSS scores. Conclusion: Fatigue and sleep quality in individuals receiving hemodialysis treatment are related to each other, as well as to biochemical balance and treatment adherence.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
  • MakaleAçık Erişim2026Scopus SJRQ1
    Severity-Based Mapping of Land-Subsidence Hazard Zones and Critical Hotspots Using SBAS-InSAR and Spatial Statistics: The Konya Metropolitan Area, Turkey

    Yalvac, Sefa; Bjelotomić Oršulić, Olga

    Land subsidence induced by excessive groundwater withdrawal has become one of the most significant geohazards affecting the Konya Closed Basin, Turkey. Although previous studies have successfully monitored ground deformation using geodetic and remote sensing techniques, limited attention has been devoted to transforming deformation measurements into quantitative, spatially classified hazard information. This study presents a severity-based framework for delineating land-subsidence hazard zones and critical hotspots in the Konya metropolitan area by integrating SBAS-InSAR observations and spatial statistical analyses. A total of 82 Sentinel-1 SAR acquisitions (41 ascending and 41 descending images) acquired between January 2023 and May 2026 were processed using the Small Baseline Subset (SBAS) technique. Ascending and descending line-of-sight deformation measurements were combined to derive vertical deformation rates, which were integrated with spatial statistical indicators and a composite severity index to quantify deformation clustering and classify subsidence severity. Hazard zones and critical hotspot areas were delineated through severity-based classification and spatial connectivity analyses. The results reveal a continuous north–south-oriented subsidence deformation belt extending across the eastern Konya. Maximum vertical subsidence rates exceeded 230 mm/yr, while spatial statistical analyses confirmed strongly clustered and statistically significant deformation patterns. Severity-based hazard zonation identified four hazard classes and a continuous high-hazard corridor. Clustering analysis further identified a dominant hotspot belt covering approximately 160 km2, with mean subsidence rates of approximately 142 mm/yr. A sensitivity analysis of the composite severity index weighting scheme, the spatial statistical neighborhood distance, the DBSCAN clustering parameters, and the number of Jenks severity classes confirmed that the resulting hazard zones and critical hotspot belt are robust to reasonable parameter variations. The findings demonstrate that land subsidence in Konya is organized as a spatially continuous regional-scale deformation system rather than a collection of isolated subsidence centers. The proposed framework transforms InSAR-derived deformation measurements into quantitative, decision-support hazard information and provides a transferable methodology for land-subsidence hazard assessment in groundwater-stressed urban environments.

    • SDG 6 · Temiz Su ve Sanitasyon
    • SDG 11 · Sürdürülebilir Şehirler ve Topluluklar
    • SDG 15 · Karasal Yaşam
  • MakaleAçık Erişim2026Scopus SJRQ1
    Characterization and Bioactive Properties of Exopolysaccharides from Pediococcus ethanolidurans Isolated from Kırçan (Smilax excelsa L.) Pickles

    Karatas, Seyda Merve; Genc, Berna; Tunc, Merve Tugce

    In this study, the characterization of some bioactive content of exopolysaccharide (EPS) extracted from Pediococcus ethanolidurans isolated with Smilax excelsa L. from conventionally produced pickles were investigated. Background: Although this study is the main study involving the characterization of EPS obtained from Pediococcus ethanolidurans, it is important because it has determined a natural polysaccharide that can be used in different fields in the industry. According to the obtained results, sugar analysis by GC-MS revealed that EPS consisted of glucose (7.59%), mannose (41.96%), fructose (16.98%), arabinose (3.15%) and rhamnose (30.30%). From the thermal behavior determined by differential scanning calorimetry (DSC), it was concluded that it should not be heated close to 250 °C. At the same time, according to the thermogram obtained as a result of X-ray diffraction (XRD) analysis, it was found to have a crystalline structure. EPS, which reached 73.844% efficiency, showed antibacterial activity against Listeria monocytogenes, Staphylococcus aureus and Escherichia coli, while 2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS) scavenging activity was detected at 0.24 mM. It also has remarkable results, seen in cytotoxicity analysis against healthy HT-29 cells, demonstrating that it has proliferative activity as high as %125 In short, Pediococcus ethanolidurans was found to be a novel EPS producer with impressive properties.

    AtıfScopus1WoS1OpenAlex1
    ScopusWeb of Scienceİncele
  • MakaleAçık Erişim2025Scopus SJRQ3
    Effects of hawthorn (Crataegus oxycantha) fruit extract on tibia bone properties in broiler chickens subjected to heat stress

    Kaya, H.; Karaalp, M.

    The purpose of this study was to examine the effects on tibia morphology, biomechanics, and mineral levels of varying dosages of hawthorn (Crataegus oxyacantha) fruit extract (HFE) addition to experimentally heat-stressed broiler drinking water. A 2x3 factorial experimental design was used to randomly assign 300 one-day-old male broilers to six experimental groups. The experimental groups included three different HFE additions (0, 0.2, and 0.4 mL/L) and two different ambient temperatures (24 and 35 °C). Each experimental group consisted of five replicates, with 10 chicks (initial body weight 38±4 g) per replicate. The study results indicated that heat stress (IIS) led to a decline in tibia dry weight, length, wet weight, volume, Seedor index, cortex thickness, shear force and shear stress, while concurrently resulting in an increase in dry matter percentage (P<0.05). Heat stress led to a decline in the levels of calcium (Ca), magnesium (Mg), copper (Cu), iron (Fe), zinc (Zn) and potassium (K) (P<0.05). The addition of HFE in the drinking water of broiler chickens exposed to HS did not significantly affect the morphological and biomechanical properties of the tibia. However, tibial Ca levels increased with the addition of 0.2 mL/L HFE, while Mg and Zn levels were elevated at both 0.2 and 0.4 mL/L HFE concentrations compared to the control group (P<0.05). In contrast, Fe and Mn levels decreased with 0.2 mL/L HFE supplementation, and K levels were reduced at both supplementation levels compared to the control (P<0.05). The findings suggest that the addition of 0.2 mL/L HFE to the drinking water of heat-stressed broiler chickens may be an effective and recommended strategy to enhance bone quality characteristics.

    • SDG 2 · Açlığa Son
  • MakaleAçık Erişim2026Scopus SJRQ3
    The Non-Newtonian Differential Operators Associated With Iterated Generators

    Dedeturk, Mutlu; Yalcin, Numan

    This paper investigates non-Newtonian differentiation associated with integer iterates of generator functions. For (Formula presented.), we consider the derivative operators (Formula presented.) and derive explicit first-order representation, transformation, and factorization formulas that relate operators corresponding to different iteration levels. The construction is then extended to higher-order derivatives, where the resulting operators are represented through conjugation with the classical derivative operator Dr. Faà di Bruno’s formula and exponential partial Bell polynomials are used to obtain explicit higher-order expressions. Several examples involving exponential, double-exponential, and quadratic generators illustrate how the general results specialize to familiar non-Newtonian calculi. The results provide a unified treatment of non-Newtonian differentiation based on iterated generators and clarify its relationship with classical differentiation.

  • MakaleAçık Erişim2026Scopus SJRQ3
    A concise approach for interpreting the removal kinetic of 2,4-D by carbonized peanut shell

    Gülen, Jale; Karpuz, Ömer

    The present study displays the adsorption characteristics of dichloro phenoxy acetic acid (2.4-D) on biomass-based peanut shell (BPC) carbon. Experiments were conducted by varying some parameters like concentration, pH, and temperature. 2,4-D adsorption uptake was increased from 0.504 to 3.826 mg/g with rising concentration from 1 µg/mL to 5 µg/mL and giving the highest adsorption at acidic pH. 1.605 mg/g uptake was obtained at pH 2.7. The data were in good harmony with Langmuir, Freundlic, Dubinin-Radushkevich (DR), and Generalized isotherms. The monolayer adsorption capacity was found as 42.62 ± 0.3257 mg/g. The kinetic was governed by the first-order kinetic. Various kinetic models were employed and particle diffusion was predominated for 2,4-D adsorption. Thermodynamics were explained in detail. The mean adsorption energy (E) was shown by the physical sorption, and Gibbs energy was the indicator of the spontaneous nature of the adsorption. Standard enthalpy, entropy, and Gibbs values were recorded as 5.064 ± 139.84, 18.849 ± 0.148, and 0,7414 ± 0.0943 J/mol. The results showed that BPC was an eco-friendly and cost-effective material.

    • SDG 6 · Temiz Su ve Sanitasyon
    • SDG 12 · Sorumlu Üretim ve Tüketim
    AtıfScopus1WoS2OpenAlex3
    ScopusWeb of Scienceİncele
  • MakaleAçık Erişim2026Scopus SJRQ3
    Spinal Manipulation, Dynamic Neuromuscular Stabilization, and Their Combination in Chronic Non-Specific Low Back Pain: A Four-Group Randomized Clinical Trial

    Alak, İsmail; Hatik, Sefa Haktan; Büyükkirli, İlker Can; Aydin, Emine Busra

    Spinal manipulation (SM) and stabilization-focused exercise are commonly used in chronic low back pain, yet evidence on their combined effects is limited. This randomized controlled trial compared SM and dynamic neuromuscular stabilization (DNS), alone or combined, in chronic non-specific low back pain. Forty-eight participants were randomized (1:1:1:1; n=12/group) using a computer-generated sequence with opaque sealed-envelope concealment to Control, SM, DNS, or SM+DNS (SMDNS). Interventions (except Control) were delivered twice weekly for 4 weeks. Outcomes (VAS, ODI, RMDQ, DNS-HS, PostureScreen) were assessed at baseline and follow-up. Assessor blinding was not feasible (treating physiotherapist also assessed outcomes); analyses used coded group labels.Within-group analyses showed significant improvements in most outcomes (p<0.05), except for postural deviation in the SM group and frontal postural deviation in the DNS and SMDNS groups. Between-group comparisons indicated greater early pain reduction with SMDNS at the second assessment (p<0.05). By week 4, pain decreased most in DNS and SMDNS (VAS Δ=−3), while SM showed Δ=−2 and Control showed no change. Disability improved most in DNS/SMDNS (ODI Δ=−13.39/−15.38; RMDQ Δ=−5.24/−5.77). Week-4 effect sizes favored SMDNS over Control and SM for key outcomes (VAS D2 g=2.07 vs Control, 1.24 vs SM; ODI PC2 g=1.73 vs Control, 1.05 vs SM; RMDQ PC2 g=1.34 vs Control, 0.23 vs SM). Overall, adding SM to DNS may enhance early pain relief; the magnitude of between-group differences (effect sizes with 95% CIs) supports interpretation, while clinical relevance should be considered alongside established MCIDs and confirmed in larger trials with longer follow-up.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
  • MakaleAçık Erişim2025Scopus SJRQ1
    The Effect of a Mindfulness-Based Stress Reduction Program on Depression and Quality of Life in Cancer Patients

    Özmaya, Esma; Uzun, Sevda; Aytaç, Tufan

    Mindfulness-based interventions have been receiving growing attention in cancer care. This study was performed to determine the effect of a mindfulness-based stress reduction program on depression and quality of life in cancer patients. The screenings in the study were performed in January to May 2023 through the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, Web of Science, Science Direct, and YÖK Thesis Center databases. After the reviews, 14 studies were included in the study. This meta-analysis showed that mindfulness-based stress reduction programs were effective on depression (SMD: −0.363; 95% CI: −0.711 to 0.015; Z = −2.042; P = .041; I2 = 85.229%) and quality of life (SMD: 0.363; 95 CI%: 0.111-0.615; Z = 2.822; P = .005; I2 = 75.222%). The type of cancer (SMD: 0.385; CI: between 0.005 and 0.528; P = .000); duration of therapy (SMD: 0.243; CI: between 0.093 and 0.393; P = .002); the person providing therapy (SMD: 0.335; CI: between 0.133 and 0.507; P = .001); scale used (SMD: 0.290; CI: between 0.148 and 0.432; P = .000); and the origin of the study (SMD: 0.298; CI: between 0.158 and 0.438; P = .000) moderators were found to play a role in the effectiveness of a mindfulness-based stress reduction program on the quality of life of cancer patients. The mindfulness-based stress reduction program yields positive outcomes by reducing depression, enhancing the quality of life in cancer patients, and promoting overall mental well-being in individuals.

    AtıfScopus1WoS1
    ScopusWeb of SciencePubMedİncele
  • MakaleYalnız künye2009Scopus SJRQ2
    Mineralogy, whole-rock and Sr-Nd isotope geochemistry of mafic microgranular enclaves in Cretaceous Dagbasi granitoids, Eastern Pontides, NE Turkey: Evidence of magma mixing, mingling and chemical equilibration

    Kaygusuz, Abdullah; Aydinçakir, Emre

    Rocks of the Late Cretaceous Dagbasi Pluton (88-83 Ma), located in the eastern Pontides, include mafic microgranular enclaves (MMEs) ranging from a few centimetres to metres in size, and from ellipsoidal to ovoid in shape. The MMEs are composed of gabbroic diorite, diorite and tonalite, whereas the felsic host rocks comprise mainly tonalite, granodiorite and monzogranite based on both mineralogical and chemical compositions. MMEs are characterized by a fine-grained, equigranular and hypidiomorphic texture. The common texture of felsic host rocks is equigranular and also reveals some special types of microscopic textures, e.g., oscillatory-zoned plagioclase, poikilitic K-feldspar, small lath-shaped plagioclase in large plagioclase, blade-shaped biotite, acicular apatite, spike zones in plagioclase and spongy-cellular plagioclase textures and rounded plagioclase megacrysts in MMEs. Compositions of plagioclases (An33-An60), hornblendes (Mg#=0.77-1.0) and biotites (Mg#=0.61-0.63) of MMEs are slightly distinct or similar to those of host rocks (An12-57; hbl Mg#=0.63-1.0; Bi Mg#=0.50-0.69), which suggest partial to complete equilibration during mafic-felsic magma interactions. The felsic host rocks have SiO2 between 60 and 76 wt% and display low to slightly medium-K tholeiitic to calc-alkaline and peraluminous to slightly metaluminous characteristics. Chondrite-normalized rare-earth element (REE) patterns are fractionated (Lacn/Lucn=1.5-7.3) with pronounced negative Eu anomalies (Eu/Eu*=0.46-1.1). Initial εNd(i) values vary between -3.1 and 1.6, initial 87Sr/86Sr values between 0.7056 and 0.7067. Compared with the host rocks, the MMEs are characterized by relatively high Mg-number of 22-52, low contents of SiO2 (53-63 wt%), low ASI (0.7-1.1) and low to medium-K tholeiitic to calc-alkaline, metaluminous to peraluminous composition. Chondrite-normalized REE patterns are relatively flat [(La/Yb)cn=1.4-3.9; (Tb/Yb)cn=0.9-1.5] and show small negative Eu anomalies (Eu/Eu*=0.63-1.01). Isotope signatures of these rocks (87Sr/86Sr(i)=0.7054-0.7055; εNd(i)=-1.0 to 1.9) are largely similar to the host rocks. Gabbroic diorite enclaves have relatively low contents of SiO2, ASI; high Mg#, CaO, Al2O3, TiO2, P2O5, Sr and Nb concentrations compared to dioritic and tonalitic enclaves. The geochemical and isotopic similarities between the MMEs and their host rocks indicate that the enclaves are of mixed origin and are most probably formed by the interaction between the lower crust- and mantle-derived magmas. All the geochemical data suggest that a basic magma derived from an enriched subcontinental lithospheric mantle, interacted with a crustal melt that originated from dehydration melting of the mafic lower crust at deep crustal levels. The existence of compositional and textural disequilibrium and the nature of chemical and isotopic variation in these rock types indicate that magma mixing/mingling between an evolved mafic and a granitic magma was involved in their genesis. Microgranular enclaves are thus interpreted to be globules of a more mafic magma probably from an enriched lithospheric mantle source. Al-in-amphibole estimates the pluton emplacement at ca. 0.3-3.8 kbar, and therefore, magma mixing and mingling must have occurred at 3.8 kbar or below this level.

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