Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Uzun, Sevda(67)
- Merdan, Mehmet(59)
- Duran, Celal(49)
- Ozdes, Duygu(46)
- Kaygusuz, Abdullah(45)
- Demir, Selim(37)
- Turan, Ibrahim(37)
- Karsli, Orhan(36)
- Öztürk, Serkan(35)
- Dokuz, Abdurrahman(34)
- Araz, Onur(32)
- Kandemir, Raif(31)
- Kulakaç, Nurşen(29)
- Sipahi, Ferkan(29)
- Arslan, Mehmet(27)
- Baltaci, Cemalettin(27)
- Baltacı, Cemalettin(27)
- Kurt, Kemal(27)
- Topal, Fevzi(27)
- Gücer, Mehmet Ali(25)
- Peker, Iskender(25)
- Aydin, Faruk(24)
- Bayrakdaroglu, Serdar(24)
- Maden, Nafiz(24)
- Ozturk, Samet(24)
- Vural, Alaaddin(24)
- Yolcu, Halil(24)
- Yücel, Cem(24)
- Aliyazicioglu, Yuksel(23)
- Kankal, Murat(23)
- Reis, Hatice Catal(23)
- Ürkek, Bayram(23)
- Günen, Mehmet Akif(22)
- Kurnaz, Muammer(22)
- Topal, Meryem(22)
- Karimullah, Suud Sarim(21)
- Uysal, Ibrahim(21)
- Ashyralyyev, Charyyar(20)
- Aydin, Aydanur(20)
- Bayraktar, Alemdar(20)
Yayınlar
- MakaleAçık Erişim2024Scopus SJRQ1Metaverse in tourism education: A mixed method on vision, challenges and extended technology acceptance model
Akyürek, Suat; Genç, Gökhan; Çalık, İsmail; Şengel, Ümit
The metaverse, an emerging educational frontier, presents boundless opportunities and distinct challenges for educators and students alike. This study delves into these aspects within the context of tourism education, employing a mixed-methods approach. It integrates in-depth interviews with 13 tourism academics and a quantitative survey of 268 tourism students. The qualitative data are meticulously coded, and the quantitative data are analyzed using Partial Least Squares Structural Equation Modeling (PLS-SEM). This research not only conceptually outlines the future benefits of the metaverse, such as enhanced interactive learning and global classroom experiences but also empirically examines its impact on tourism students' engagement and learning outcomes. Key findings highlight both the empowering potential and the infrastructural and accessibility challenges posed by metaverse technology in tourism education. Ultimately, this study provides a holistic view of metaverse-based education's role in advancing the tourism industry, suggesting practical implications for technological adaptation and pedagogical strategies.
AtıfScopus28WoS22OpenAlex29
İncele - Editöre MektupYayıncıda açık erişim2024Scopus SJRQ2The Great Destruction - Turkey in the Earthquake of the Century: A Health Sector Perspective
Ulutaşdemir, Nilgün; Kulakaç, Nurşen
- MakaleAçık Erişim2024Scopus SJRQ1Geophysical and numerical approaches to solving the mechanisms of landslides triggered by earthquakes: A case study of Kahramanmaraş (6 February, 2023)
Sari, Mahmut
Many landslides occurred in the 11 Turkish provinces affected by the earthquakes centered in Kahramanmaraş in February 2023, and many people lost their lives due to those landslides. To reduce the risks and hazards brought on by landslides induced by earthquakes, it is essential to identify the mechanisms causing landslides to arise in such situations. In this study, the geological strength index and both seismic refraction tomography and electrical resistivity tomography (ERT) geophysical methods were used to determine the failure mechanism of layered sedimentary units defined as flysch (claystone-siltstone-sandstone-marl). The shear strength reduction finite element method (SSR-FEM) was used with the RS2 computer program for model solutions. One of the geophysical methods, ERT, facilitated an interpretation of the cyclic failure mechanism that occurs in flysch, and it was found to be congruent with numerical models. Landslide slip circle depth, water-saturated layers, and resistivity values were determined with the ERT method. Seismic methods were employed to determine the velocity values (Vp, Vs) of the landslip mass. These velocity data, along with the elasticity modulus and Poisson ratios derived from them, were utilized in our numerical model. In the maximum shear strength and horizontal displacement analyses performed on the section line determined before the landslide, the natural state and the situation under the influence of groundwater were examined and the strength reduction factor (SRF) was determined as 1.35 and 1.24, respectively. In an evaluation conducted under the influence of the maximum horizontal ground acceleration (0.22 g) determined by taking into account the seismicity of the study area, it was concluded that instability occurred in the flysches and the SRF value was 0.72. An important finding of this study is that the results of geophysical methods used to determine the lithological properties of sedimentary rock masses and understand the causes of landslides align closely with those of numerical analysis methods, providing high accuracy. These methods also support new approaches, particularly in identifying landslip boundaries and detecting areas with high water saturation. It has been discovered that earthquakes actively contribute to the instability of these kinds of soils.
AtıfScopus6WoS5OpenAlex6İncele - MakaleAçık Erişim2024Scopus SJRQ2The relationships between the multidimensional planned behavior model, green brand awareness, green marketing activities, and purchase intention
Baltaci, Duygu Çinar; Durmaz, Yakup; Baltaci, Furkan
Introduction: This study investigates the determinants impacting consumer purchasing behavior. Methods: Utilizing multidimensional planned behavior theory alongside measures of brand awareness and green brand awareness, this study examines the mediating role of multidimensional planned behavior theory. Empirical data were gathered through a survey conducted among Generation Z university students, yielding 638 responses. Analysis was performed on 590 valid responses. Results: Findings indicate that green marketing initiatives and green brand awareness positively influence consumers’ purchase intentions. Subdimensions of the theory of planned behavior (TPB), namely, attitude, subjective norms, and perceived behavioral control, serve to strengthen these relationships and mediate the interaction process. Conclusion: This study contributes novel insights to the burgeoning field of green marketing literature, offering a structural model for firms and policymakers. It suggests that companies can effectively engage in informal consumer education through green marketing efforts, thereby influencing consumers’ purchasing decisions via planned behavior. Moreover, such activities foster an increase in consumers’ green brand awareness, providing companies with an opportunity to promote conscious consumer behavior. The study's utilization of the TPB is both timely and original, particularly in its alignment with the United Nations 2030 Sustainable Development Goals.
AtıfScopus24WoS14OpenAlex32
İncele - MakaleYalnız künye2024Scopus SJRQ1Efficacy of Propolis in the Prevention of Oral Mucositis in Patients Undergoing High-Dose Chemotherapy
Çakmak, Seher; Nural, Nesrin
Background: Oral mucositis is one of the most common symptoms in adults with a hematological cancer who are receiving high-dose chemotherapy. Propolis is a complementary and alternative method used to prevent oral mucositis in these patients. Objective: The aim of this study was to determine the efficacy of propolis in the prevention of oral mucositis in patients receiving high-dose chemotherapy and/or hematopoietic stem cell transplantation. Methods: A total of 64 patients, 32 in the propolis group and 32 in the control group, were enrolled in this prospective randomized controlled experimental study. Whereas the standard oral care treatment protocol was administered to the control group, aqueous propolis extract was applied to the propolis intervention group in addition to the standard oral care treatment protocol. Data collection forms included a Descriptive Information Form, the Karnofsky Performance Scale, the Cumulative Illness Rating Scale-Geriatric, Patient Follow-up Form, the World Health Organization Oral Toxicity Scale, and the National Cancer Institute Common Terminology Criteria for Adverse Events. Results: The incidence and duration of oral mucositis were statistically significantly lower in the propolis intervention group than the control group, and the onset of oral mucositis and grade 2 to 3 oral mucositis occurred later (P < .05). Conclusion: Propolis mouthwash combined with standard oral care treatment delayed the onset of oral mucositis and decreased its incidence and the number of days it lasted. Implications for Practice: Mouthwash with propolis can be used as a nursing intervention to decrease oral mucositis and its symptoms in hematological cancer patients receiving high-dose chemotherapy.
AtıfScopus8WoS7OpenAlex7İncele - MakaleAçık Erişim2024Scopus SJRQ2Gluconic Acid Production by Using Recombinant Escherichia coli Waksman pqq+ Cells with a Novel Approach from Biomass Sources
Gül, Abdulkadir; Tanyıldızı, Muhammet Şaban
Gluconic acid (GA) is widely used in the pharmaceutical, food, detergent, textile, leather, and concrete industries. However, cost-effective and high-yield production of GA remains a challenge. Due to currently high raw material inputs of GA, various alternative carbohydrate sources are being investigated. Sucrose is one of the cost-effective biomass sources that can be used as feedstock. The most common industrial production of GA is based on wild-type bacteria and fungi, but there are many problems with this production. This study aimed to optimize the production of GA from glucose produced by hydrolysis of sucrose using recombinant E. coli Waksman (W) pqq+ strain. After sucrose was enzymatically hydrolyzed, significant medium components for GA production were determined as glucose, calcium carbonate (CaCO3), peptone, and ammonium phosphate ((NH4)3PO4) using Placket-Burman Design (PBD). Detailed optimization of the medium components that are significant in GA production was carried out using central composite design (CCD), and optimum values of the independent variables examined in maximum GA production (93.5 ± 2.95 g/L) were determined as glucose 95, CaCO3 25, peptone 2, and (NH4)3PO4 1.13 (g/L). Using results obtained in the Erlenmeyer experiments, GA production in the bioreactor was investigated by CCD. The maximum GA efficiency (3.20 ± 0.15 g/L. h) was obtained under conditions where the air supply rate was 10.82 L/min, stirring speed was 656.87 rpm, and CaCO3 concentration was 16.90 g/L. In conclusion, it has been shown that GA can be produced with a high yield with this novel approach using a recombinant strain for GA production from sucrose.
AtıfScopus5WoS5OpenAlex5İncele - MakaleAçık Erişim2024Scopus SJRQ1Nurse-led support impact via a mobile app for breast cancer patients after surgery: a quasi-experimental study (step 2)
Aydin, Aydanur; Gürsoy, Ayla
Breast cancer patients may experience some health issues following surgery. Training patients about self-care plays a vital role in managing these symptoms. Mobile applications are a contemporary and appropriate approach to support patients about the potential symptoms following breast cancer surgery. This quasi-experimental study aimed to assess the impact of nurse-led support mobile application (NL-Mapp) delivered on breast cancer patients after surgery. Ninety participants were recruited, with 45 assigned to the intervention group and 45 to the control group. Subjects in the intervention group received NL-Mapp in addition to routine care, while those in the control group received only routine care over four weeks. The intervention included educational content on the postoperative period of breast cancer. Outcomes were assessed at baseline (M0), before discharge (M1), and one month after surgery (M2). The intervention group patients had significantly improved pain, affected shoulder functions, and anxiety owing to the effects of group, time, and group-time interaction. Body image and sexual adjustment were enhanced based on time and group-time interaction effects. During the follow-up period, experimental group patients experienced an improvement in body image and sexual adjustment, while those in the control group showed a decrease. This suggests that NL-Mapp may play a significant role in training breast cancer patients to manage their symptoms after surgery.
AtıfScopus10WoS10OpenAlex5İncele - MakaleYalnız künye2024Scopus SJRQ1Education and reproductive health: evidence from schooling expansion in Turkey
De, Prabal K.; Tümay, Muhammed
We investigate the role of additional years of schooling mandated by a compulsory schooling expansion law in affecting reproductive preferences and safe reproductive health behaviors in Turkey—a middle-to-high-income country with gender inequity in education but overall high levels of safe reproductive health practices at the time of passing the law. Using a fuzzy regression discontinuity design, we find that the additional schooling improved several health behaviors. However, the effects on some outcomes commonly analyzed in the existing literature, such as contraceptive use or fertility, were either weak or insignificant. Overall, our findings complement the current literature on the marginal health benefits of schooling expansion and suggest that policymakers consider the institutional and cultural factors while evaluating the scope and potential non-educational benefits of such expansions.
- MakaleAçık Erişim2024Scopus SJRQ3Prevalence and Determinants of Workplace Violence Against Pediatric Emergency Healthcare Workers and Its Effect on Their Psychological Resilience
Ustuner Top, Fadime; Kulakaç, Nurşen; Cam, Hasan Hüseyin
The study aimed to determine the prevalence and risk factors of workplace violence (WPV) against pediatric emergency healthcare workers and evaluate the relationship between WPV and psychological resilience. This study is cross-sectional and correlational. According to the results, the prevalence of WPV was 69.8%, and its distribution was as follows: verbal abuse (56.9%), bullying/mobbing (37.6%), physical abuse (12.8%), and sexual abuse (2.2%). Being single/separated/divorced/widowed (odds ratio [OR]: 1.85, 95% confidence interval [CI]: 1.03-3.30), being a physician (OR: 4.74, 95% CI: 1.73-12.96), being a staff member (OR: 2.57, 95% CI: 1.10-5.99), routine direct physical contact with patients/clients (OR: 2.77, 95% CI: 1.40-5.48), and lack of encouragement to report WPV (OR: 3.76, 95% CI: 2.01-7.01) were independent predictors of WPV (P <.05), and WPV was found to be associated with low psychological resilience. Arrangements related to violence prevention, preparation, and intervention should be made and maintained in all pediatric emergency departments.
AtıfScopus8WoS8OpenAlex9İncele - MakaleAçık Erişim2024Determination of physicochemical and antioxidant properties of icecream produced with the addition of Jerusalem artichoke (Helianthus tuberosus L.); [Yer elması (Helianthus tuberosus L.) ilavesiyle üretilen dondurmanın fizikokimyasal ve antioksidan özelliklerinin belirlenmesi]
Gündoğdu, Engin
The study investigates the effects of incorporating Jerusalem artichoke (Helianthus tuberosus L.) into ice cream formulations on their physicochemical and antioxidant properties of icecream. Jerusalem artichoke (JA), known for its high inulin content and beneficial carbohydrates, was added to ice cream in varying concentrations (5%, 10%, and 15%) and evaluated for its impact on dry matter, protein, ash, pH, acidity, sugar content, viscosity, volume increase, initial dripping time, total melting time, color values, total phenolic content, DPPH free radical scavenging activity, and total antioxidant capacity.The results revealed that the addition of JA significantly improved the dry matter and antioxidant properties of the ice cream, with the highest values observed in samples containing 10% and 15% JA. Total phenolic content increased from 363.51 mg GAE/kg in the control to 587.47 mg GAE/kg with 15% JA, while DPPH scavenging activity rose from 12.49% to 18.04%. On the other hand, the control sample has the highest total antioxidant capacity (4517.29 mg AAE/kg), while the JA samples generally exhibit lower values. The protein content decreased slightly with the addition of JA, while ash content increased. The pH and titratable acidity values also showed significant changes, with higher concentrations of JA resulting in higher pH and acidity. Overall, the incorporation of JA into ice cream formulations enhances the nutritional and functional properties. These findings suggest that JA is a valuable ingredient for developing functional ice cream with potential health benefits.
AtıfScopus2OpenAlex2TR Dizin1
İncele - MakaleAçık Erişim2024Scopus SJRQ2Disease burden and symptom management in type 2 diabetic patients: A phenomenological study
Demir Çam, Sevgi; Uzun, Sevda
Aim: This study was conducted to address the experiences of diabetic patients from a psychosocial perspective, examine the burden of disease, and determine their practices for symptom management. Materials and Methods: In this study, a phenomenological research design, a qualitative research design, was used. The study included 20 diabetic patients. Individual and face-to-face interviews were performed, and Colaizzi's phenomenological analysis method was used to analyze the data. Results: As a result of the data analysis, four categories (challenges with care and treatment, coping with the disease, effects, and healthy life behaviors) and eleven main themes (knowledge, application, symptoms, support resources, spiritual coping methods, physical coping methods, physical effects, spiritual effects, social effects, physical practices, and psychological practices) emerged. Conclusion: It was concluded that the disease burden of diabetic patients is intense and that the participants of the study were not effective in coping with the disease through symptom management and found spirituality important in coping.
- MakaleYalnız künye2024Scopus SJRQ1Hysteretic behaviour of square-hollow-section T- and X-joints with in-plane bending moment
Ozyurt, E.; Gunaydin, M.
This study examined the hysteretic behaviour of Square Hollow Section (SHS) T- and X-joints subjected to cyclic in-plane bending moments. A nonlinear finite element software, Abaqus, was used to investigate SHS T- and X-joint seismic performance. Prior to the parametric study, the numerical model was validated based on the available test results in the literature. A comprehensive parametric study employed validated finite element models to evaluate the influence of critical geometric parameters, including the brace-to-chord width ratio (β) and the chord width-to-thickness ratio (γ). The results of the finite element analyses regarding ductility, flexural strength, and energy dissipation behaviour of SHS T- and X-joints under quasi-static cyclic in-plane bending were evaluated. Based on the hysteretic curves, increasing β generally leaded to higher initial stiffness and moment capacity in SHS joints, considerably reducing joint rotation. Conversely, the joints with larger γ exhibited reduced initial stiffness and moment capacity. Besides, the Eurocode 3 EN1993-1-8 predictions for the ultimate flexural strength of the joints are found to be conservative compared to finite element results. The results also revealed that the SHS T- and X-joints showed satisfactory ductility levels under in-plane bending load. It was observed that the SHS T- and X-joints with high β and low γ are advantageous for absorbing energy under seismic loads. These findings offered valuable insights for the seismic-resistant design of structures incorporating SHS joints, aiding in selecting optimal configurations based on specific performance requirements.
AtıfScopus18WoS18OpenAlex18İncele - MakaleAçık Erişim2024Scopus SJRQ3Exploring the associations between ankle dorsal and plantar flexion strength, reactive strength index, and balance in elite youth soccer players
Kayhan, Recep Fatih; Terzi, Esranur; Bayrakdaroğlu, Serdar; Ceylan, Halil İbrahim; Morgans, Ryland; Nikolaidis, Pantelis T.
Background: Enhanced muscular strength has been widely acknowledged as a fundamental determinant of improved performance in the lower extremities. However, the specific impact of ankle strength on explosive strength and balance remains inadequately elucidated. Consequently, this study aims to (a) evaluate balance, reactive power, and flexor–extensor muscle balances in soccer players, and (b) evaluate ankle dorsal and plantar flexion muscle strength as predictive factors for reactive strength index and balance performance. Methodology: A cohort comprising 38 actively engaged Turkish National League soccer players participated in the study. The assessment encompassed explosive power through a drop jump, dynamic balance utilizing a moving disc, and ankle strength measured with a handheld dynamometer. Results: The findings revealed that dominant lower limb dorsal flexion strength emerged as a significant predictor of both reactive strength (R2 = 0.106, p < 0.05) and balance (R2 = 0.121, p < 0.05). Similarly, non-dominant lower limb dorsal flexion strength was identified as a significant predictor of reactive strength (R2 = 0.362, p < 0.05). Furthermore, the study established that dominant lower limb plantar flexion strength significantly predicted balance (R2 = 0.121, p < 0.05), while non-dominant lower limb plantar flexion strength served as a significant predictor of both reactive strength (R2 = 0.148, p < 0.05) and balance (R2 = 0.179, p < 0.05). Conclusions: Consequently, these findings emphasize the significance of incorporating targeted exercises designed to enhance intrinsic foot musculature, thereby augmenting both explosive strength and balance in athletes. While acknowledging the persistent importance of strength assessment in evaluating lower extremity performance, our results underscore the critical role played by ankle muscle strength in the execution of explosive strength and balance.
AtıfScopus6WoS6OpenAlex9İncele - MakaleAçık Erişim2024Scopus SJRQ1Investigating the impact of discretization techniques on real-time digital control of DC-DC boost converters: A comprehensive analysis
Yanarateş, Cağfer; Zhou, Zhongfu; Altan, Aytaç
This paper provides a thorough comparative analysis of discretization techniques commonly utilized in digital control applications for DC-DC boost converters (DBCs). Given the crucial role of DC-DC converters in various industries such as renewable energy systems, electric vehicles, and portable electronic devices, it is imperative to optimize their performance through efficient digital control. This study aims to improve the understanding of the effects of discretization methods on control system behaviour. It investigates their impact on the performance, stability and accuracy of control algorithms in the context of DBC, using dSPACE real-time interface (RTI) and hardware-in-the-loop (HIL) simulation for validation. This approach replicates real-world conditions, allowing performance to be evaluated in a controlled environment. The analysis examines behaviour in the time and frequency domains, providing insight into the strengths and weaknesses of each method. Experimental validation using MATLAB/Simulink/Stateflow on dSPACE RTI 1007 processor, DS2004 high-speed A/D and CP4002 timing and digital I/O boards ensures that the comparative analysis provides practical benefits for DBC digital control applications.
AtıfScopus13WoS7OpenAlex10İncele - MakaleYayıncıda açık erişim2024Scopus SJRQ1Gelatin extraction from chicken skin by conventional and Ohmic heating methods and comparison with commercial halal gelatins
Işık, Çiğdem; Parlak, Mahmut Ekrem; Kıraç Demirel, Fatma Tuba; Odabaş, Halil İbrahim; Dağdelen, Adnan Fatih; Yilmaz, Mustafa Tahsin; Taylan, Osman; Sarıcaoğlu, Furkan Türker
Gelatin extraction from chicken skins using ohmic heating (OH) is a promising application in the food industry. In this study, the effects of OH parameters (electric field (5, 10, 15, and 20 V/cm) and extraction time (1, 3, and 5 h)) on the extraction yield, physicochemical, functional, rheological, thermal, and microstructural properties of chicken skin gelatin were investigated, as well as comparison with conventional extraction and commercial halal gelatins. Chicken skin gelatins obtained with OH-assisted extraction showed higher ash content resulting in more turbidity than commercial gelatins. OH parameters significantly increased the gelatin yield, and 1 h of OH treatment revealed the highest gel strength amongst the electric field applications, conventional extracted, and bovine gelatin. The melting and gelation temperatures of chicken skin gelatins were higher than bovine gelatin and OH treatment increased the thermal stability. The amino acid composition significantly changed with OH treatment, and total imino acid content, relating to the gelation properties, increased. Functional properties, water and oil binding, emulsifying, and foaming, of chicken skin gelatin were significantly higher than commercial gelatins, and OH treatment significantly increased these properties. Overall, OH extraction of gelatin from chicken skins could be a better option for less extraction time, higher extraction yield, better functionality, and higher thermal stability compared to conventional extraction. It was concluded that chicken skin gelatins extracted using OH have properties that can be an alternative to commercial gelatins, but further purification processes are required.
AtıfScopus23WoS23OpenAlex24İncele - Derleme MakaleAçık Erişim2024Scopus SJRQ1Oxylipins Derived from PUFAs in Cardiometabolic Diseases: Mechanism of Actions and Possible Nutritional Interactions
Ağagündüz, Duygu; Yeşildemir, Özge; Koçyiğit, Emine; Koçak, Tevfik; Özen Ünaldı, Buket; Ayakdaş, Gamze; Budán, Ferenc
Oxylipins are oxidized fatty acids, both saturated and unsaturated, formed through pathways that involve singlet oxygen or dioxygen-mediated oxygenation reactions and are primarily produced by enzyme families such as cyclooxygenases, lipoxygenases, and cytochrome P450. These lipid-based complex bioactive molecules are pivotal signal mediators, acting in a hormone-like manner in the pathophysiology of numerous diseases, especially cardiometabolic diseases via modulating plenty of mechanisms. It has been reported that omega-6 and omega-3 oxylipins are important novel biomarkers of cardiometabolic diseases. Moreover, collected literature has noted that diet and dietary components, especially fatty acids, can modulate these oxygenated lipid products since they are mainly derived from dietary omega-3 and omega-6 polyunsaturated fatty acids (PUFAs) or linoleic acid and α-linolenic by elongation and desaturation pathways. This comprehensive review aims to examine their correlations to cardiometabolic diseases and how diets modulate oxylipins. Also, some aspects of developing new biomarkers and therapeutical utilization are detailed in this review.
AtıfScopus15OpenAlex16İncele - MakaleAçık Erişim2024Scopus SJRQ1Ethical Dilemmas and Coping Experiences of Nurses Caring for Patients With Hematologic Cancer A Phenomenological Study
Uzun, Sevda
The study aimed to evaluate the ethical dilemmas faced by nurses who provide care to patients with hematologic cancer and determine their coping mechanisms using a phenomenological approach. This qualitative study was conducted with 35 nurses employed in clinics specializing in hematologic cancer patient care, living in diverse regions of Turkey, using semistructured, in-depth interviews through the WhatsApp mobile application. The snowball sampling technique was utilized to identify participants, and interviews continued until data saturation was achieved. All interviews were recorded and subsequently transcribed. Data analysis was conducted using Colaizzi’s phenomenological analysis method, with the study adhering to the COREQ (Consolidated Criteria for Reporting Qualitative Research) checklist for reporting. In the analysis of the data, 2 categories (ethical dilemma situations and coping experiences) and 6 subthemes (treatment, care, professional values and beliefs, emotions, struggling with emotional burdens, and psychosocial approach) emerged. According to the results, nurses responsible for hematologic cancer patients struggle with ethical dilemmas in healthcare delivery and face challenges in effectively addressing them, which could potentially impact the quality of healthcare provided by nurses.
AtıfOpenAlex1İncele - MakaleAçık Erişim2024Scopus SJRQ2Superplasticizer Dosage Effect on Strength, Microstructure and Permeability Enhancement of Cementitious Paste Fills
Cavusoglu, Ibrahim
A cementitious paste fill (CPF) ensures the long-age stability of underground cavities. Recently, superplasticizers, specifically ones that are polycarboxylate ether-based, have been incorporated to enhance CPF performance, yet their long-term effects on permeability, mechanical properties, and microstructures remain unclear. This study investigates these effects with CPF samples containing varying superplasticizer dosages (0%, 1%, 3%, 5%) that have been cured for up to 150 days. Rheological assessments (slump cone, vane shear tests), unconfined compressive strength testing, microstructural characterization (MIP, SEM), and hydraulic conductivity measurements were performed alongside XRD and thermal analyses (TAns) on high w/c (2) cement paste samples. The results showed that superplasticizer addition reduced CPF water content by 23% and yield stress by six times, aiding slurry transport. Long-term strength was enhanced by up to 2.4 times compared to the control samples, indicating improved underground stability. Superplasticizers altered the CPF samples stress–strain responses, increasing their load-bearing capacity. TG/DTG and XRD analyses revealed that hydration product development increased and porosity decreased in the presence of a superplasticizer. Hydraulic conductivity and permeability also decreased significantly. SEM and MIP analyses showed that the superplasticizer enhanced denser microstructures with fewer pores and fractures. These findings offer promising implications for designing CPFs with improved strength, durability, and environmental sustainability.
AtıfScopus14WoS11OpenAlex12İncele - MakaleAçık Erişim2024Scopus SJRQ1Impact of high Al2O3 content on the microstructure, mechanical properties, and wear behavior Al–Cu–Mg/Al2O3 composites prepared by mechanical milling
Beder, Murat; Varol, Temel; Akçay, Serhatcan Berk
Metal matrix composites are increasingly being recognized as new wear-resistant materials. The main purpose of this study is to investigate the microstructure, mechanical properties, and wear resistance of Al–Cu–Mg alloy matrix composites reinforced with high contents of Al2O3 particles. Moreover, the effects of 10, 20, and 40 wt% Al2O3 contents on the microstructure, mechanical properties, and dry wear resistance of the Al–Cu–Mg matrix composites are studied. The results show that the θ (CuAl2) phase ratio increases with increasing Al2O3 contents. The hardness values of the samples also increase with increasing Al2O3 contents. The highest tensile and flexural strengths are measured as 284 and 562.9 MPa, respectively, and these values are obtained for the composite material reinforced with 10 wt% Al2O3 particles. The continuous increase in the hardness of the samples with increasing Al2O3 content may cause the lowest volume loss for the 40 wt% Al2O3-reinforced composite. The friction surfaces show that the wear surfaces comprise adhesion, delamination, and smear layers. Overall, compared to the Al2O3-reinforced composite samples, pure Al–Cu–Mg alloy samples show approximately 2 times more mass gain.
AtıfScopus20WoS17OpenAlex20İncele - MakaleAçık Erişim2024Islamic Law and Human Rights: Convergence or Conflict?
Ibrahim, Zumiyati Sanu; Karimullah, Suud Sarim; Sulastri; Gönan, Yavuz; Okur, Hüseyin
The background of this study is rooted in the significance of human rights as a universal principle, which often faces challenges when applied within the context of Islamic law. The main issue is the incompatibility between some practices of Islamic law and the principles of human rights, which raises the question of how these two legal systems can interact without compromising their fundamental values. This study aims to explore the relationship between Islamic law and human rights, understand the challenges arising from differences in interpretation and implementation, and offer solutions to bridge these differences. This study uses a qualitative method combining text analysis, literature, and secondary data better to understand the concept of human rights in Islam and identify areas of potential conflict. The results show that the relationship between Islamic law and human rights is complex, where potential conflicts and convergence efforts coexist. Despite potential conflicts, the values of justice, equality, and human dignity in Islam align with Human Rights principles. However, differences in interpretation and implementation of the law can be a significant source of tension. This study highlights the importance of an approach rooted in cross-cultural and religious dialogue, as well as respect for diversity, to achieve a more harmonious convergence between Islamic law and universal human rights.
AtıfScopus11OpenAlex3İncele