WoS İndeksli Yayınlar Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12514/3595

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The Relationship Between Mothers' Optimism and Children's Anxiety: The Mediating Role of Mothers' Psychological Resilience
(Springer, 2025) Polat, Pinar
This study aimed to investigate the relationships between mothers' optimism, psychological resilience, and children's anxiety, focusing on the mediating role of psychological resilience in T & uuml;rkiye. Using a cross-sectional design, data were collected from 394 mothers with children aged 4-6 through an online survey. Confirmatory factor analysis and structural equation modeling were used to analyze the data. The findings indicated a positive association between mothers' optimism and psychological resilience, and a negative association between psychological resilience and children's anxiety levels. Moreover, psychological resilience served as a mediator, indicating that mothers' optimism indirectly reduced children's anxiety by increasing psychological resilience. These findings highlight the protective role of maternal resilience in reducing children's anxiety and suggest that interventions aimed at strengthening mothers' resilience may contribute to improving children's emotional well-being.
Citation - WoS: 44
Citation - Scopus: 52
Magnetic solid phase extractions of Co(II) and Hg(II) by using magnetized C-micaceus from water and food samples
(ELSEVIER SCI LTD, 2019) Ozdemir, Sadin; Mohamedsaid, Siham Abdullah; Kilinc, Ersin; Soylak, Mustafa
A new bio-MSPE sorbent based on the use of C. micaceus and gamma-Fe2O3 magnetic nanoparticle was prepared for the preconcentrations of Co(II) and Hg(II). Critical parameters including pH, flow rate, quantity of C. micaceus, quantity of gamma-Fe2O3 magnetic nanoparticle, eluent (type, concentration and volume), sample volume, and foreign ions were examined. Surface structure and variations after interaction with Co(II) and Hg(II) of bio-MSPE sorbent were investigated by FT-IR, SEM, and EDX. The impact of bio-MSPE column reusage was also tested. The biosorption capacities were determined as 24.7 mg g(-1) and 26.2 mg g(-1), respectively for Co(II) and Hg(II). Certified reference materials were utilized to find out the accuracy of the prepared bio-MSPE method. This novel bio-MSPE method was accomplished by being applied to real food and water samples. In particular, it will be possible to make use of C. micaceus as new alternatives, in environmental biotechnology applications.
Citation - WoS: 35
Citation - Scopus: 39
Highly improved solar cell efficiency of Mn-doped amine groups-functionalized magnetic Fe3O4@SiO2 nanomaterial
(Wiley Online Library, 2021) Kutluay, Sinan; Horoz, Sabit; Şahin, Ömer; Ekinci, Arzu
Herein, magnetic Fe3O4@SiO2 nanomaterial functionalized with amine groups (Fe3O4@SiO2@IPA) doped with manganese (Mn) was prepared, characterized and used for solar cell application. Fe3O4@SiO2@IPA-Mn was prepared via the co-precipitation and sol-gel techniques. Energy-dispersive X-ray (EDX), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) measurements were performed to examine the structure of Fe3O4, Fe3O4@SiO2, Fe3O4@SiO2@IPA and Fe3O4@SiO2@IPA-Mn. General morphology and textural properties of the prepared magnetic nanomaterials were clarified by Brunauer-Emmett-Teller (BET) and scanning electron microscopy (SEM). In addition, Ultraviolet-visible (UV-Vis) spectroscopy and thermal gravimetric analysis (TGA) were used to have a knowledge about the energy band gap and thermal behavior of the prepared magnetic nanomaterials. The energy band gap of Fe3O4@SiO2@IPA with spinel structure was determined as approximately 2.48 eV. It was understood that Fe3O4, Fe3O4@SiO2 and Fe3O4@SiO2@IPA showed type IV-H3 hysteresis cycle according to IUPAC. From the BET data, it was determined that the specific surface areas of Fe3O4, Fe3O4@SiO2 and Fe3O4@SiO2@IPA were 60.85, 28.99 and 40.41 m(2)/g, respectively. The pore size distributions of Fe3O4, Fe3O4@SiO2 and Fe3O4@SiO2@IPA were calculated as 8.55, 1.53 and 1.70 nm, respectively, by the BJH method. Also, it was observed that the dominant pore widths of Fe3O4, Fe3O4@SiO2 and Fe3O4@SiO2@IPA were calculated similar to 5.58, similar to 0.88 and similar to 17.92 nm, respectively, by the DFT method. Au/CuO/Fe3O4@SiO2@IPA-Mn/ZnO/SnO2: F solar cell device was created using existing Fe3O4@SiO2@IPA-Mn as a buffer layer. The power conversion efficiency (%) of Fe3O4@SiO2@IPA-Mn based solar cell device was calculated as 2.054. This finding suggest that Fe3O4@SiO2@IPA-Mn can be used as a promising sensitizer in solar cell technology. Moreover, in this study, the effectiveness of the modification of manganese (one of the transition metals, which is cheap and easily available) with magnetic nanomaterials in the use of solar cell technology was demonstrated for the first time.
Citation - WoS: 1
Citation - Scopus: 1
Determining the Knowledge Levels and Opinions of Athletes Who Is Age Under-16 in Different Branches About Doping and Ergogenic Aids
(Mattioli 1885, 2020) Ceylan, Abdil; Calik, Febmi; Geri, Serdar; Sen, Murat; Ece, Cuma; Sumer, Mebmet
Study Objectives: The study aimed to evaluate the knowledge levels and opinions of athletes under 16 years of age about doping and ergogenic aids in different branches. The fact that there are no studies in the literature on the knowledge and opinions of athletes under the age of 16 on doping and ergogenic aids has encouraged us to the study. Methods: The sample of the study consists of 392 athletes under 16 years of age in different sports branches. In the study, a questionnaire consisting of 5 likert and 26 questions about doping substances and ergogenic aids was applied to the athletes by Eroz (2007). Results: As a result of the analysis of the obtained findings with the Chi-square test, it was determined that as the age of the athletes increased, the belief that the athlete used doping increased with the fear of losing. It has been determined that as the family income increases, the tendency to try every way to be successful does not decrease significantly, and athletes with low family income are more willing to try every way to be successful. As the education of the athlete's parents increased, the belief that the use of doping harmed the Fair-Play spirit in sports and that doping leads to unfair competition has been increased. Conclusion: The study revealed that there is a need to reinforce the doping knowledge of athletes. It has been concluded that certain socio-economic conditions are determinants in the use of doping by athletes and that they shape their tendency towards doping. Therefore, it is thought that the trainers, managers, athlete families and athletes about the negative effects of doping use on athlete health is of great importance.
Citation - WoS: 25
Citation - Scopus: 30
Exploring the Stakeholder's Role in Sustainable Degrowth Within the Context of Tourist Destination Governance: the Case of Istanbul, Turkey
(Routledge Journals, Taylor & Francis Ltd, 2020) Cakar, Kadir; Uzut, Ismail
The aim of the present study is to explore the role of tourism stakeholders in the sustainable degrowth of tourism, within the context of overtourism and destination governance. Data was gathered from document analysis and in-depth, face-to-face interviews with key tourism stakeholders in Istanbul, the most popular tourist destination in Turkey. A qualitative case study approach was adopted and content analysis was utilized as a data treatment technique. The results indicate that demarketing and applying "localhood" tourism activities are key drivers behind degrowth. Findings have also confirmed that degrowth is one solution in response to the concept of overtourism.
Citation - WoS: 11
Citation - Scopus: 12
The Effectiveness of HALP Score in Predicting Mortality in Non-ST Myocardial Infarction Patients
(Lippincott Williams and Wilkins, 2025) Kiliç, R.; Guzel, T.; Aktan, A.; Güzel, H.; Kaya, A.F.; Çankaya, Y.
Background: The HALP score, measured based on hemoglobin, albumin, lymphocyte, and platelet levels, is regarded as a novel scoring system that indicates the status of systemic inflammation and nutritional health. Our study aimed to evaluate the relationship between HALP score and prognosis in non-ST-elevation myocardial infarction (NSTEMI) patients. Methods Between 1 January 2020 and 1 January 2022, 568 consecutive patients diagnosed with NSTEMI from a single center were included in the study retrospectively. The patients were divided into two equal groups according to the median HALP cutoff value of 44.05. Patients were followed for at least 1 year from the date of admission. Results The average age of the patients was 62.3±10.6 years and 43.7% were female. In-hospital and 1-year mortality were found to be significantly higher in the group with low HALP scores (6.0 vs. 2.1%, P=0.019 and 22.5 vs. 9.9%, P<0.001, respectively). In receiver operating characteristic curve analysis, a cutoff level of 34.6 of the HALP score predicted 1-year mortality with 71% sensitivity and 65% specificity (area under the curve: 0.707, 95% confidence interval: 0.651-0.762, P<0.001). In Kaplan-Meier analysis, higher mortality rates were observed over time in the group with lower HALP scores (log-rank test=16.767, P<0.001). In Cox regression analysis, the HALP score was found to be an independent predictor of 1-year mortality (odds ratio: 0.969, 95% confidence interval: 0.958-0.981, P<0.001). Conclusion We found that a low HALP score could predict in-hospital and 1-year mortality in patients admitted to the hospital with a diagnosis of NSTEMI. © © 2024 Wolters Kluwer Health, Inc. All rights reserved.
Citation - WoS: 7
Citation - Scopus: 6
Protective effects of dexmedetomidine on ischaemia-reperfusion injury in an experimental rat model of priapism
(Andrologia, 2021) Unsal, Velid; Kölükçü, Engin; S. Parlaktaş, Bekir; Kölükçü, Vildan; Fırat, Fatih; Deresoy, Faik A.; Katar, Muzaffer; Kuyucu, Yunus Emre
The study aimed to investigate the effects of dexmedetomidine against ischaemia-reperfusion injury occurring after priapism in a model of induced-priapism in rats. A total of 18 male rats were randomised into three groups. Group 1 was the control group. A priapism model was performed rats in Group 2 and then ischaemia-reperfusion injury was evaluated. Group 3 had similar procedures to the rats in Group 2. Rats in Group 3 additionally had 100 μg/kg dexmedetomidine administered intraperitoneally immediately after reperfusion. Blood and tissue samples were analysed. Biochemical analysis of blood samples revealed a decrease in the levels of the pro-inflammatory cytokines including interleukin-1 beta (IL-1 Beta), interleukin-6 (IL-6), and tumour necrosis factor-alpha (TNF-alpha) in Group 3 compared to Group 2 (p:.04, p:.009 and p:.009, respectively). Similarly, the highest malondialdehyde (MDA) level was in Group 2 (p:.002). The levels of antioxidant enzymes superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities were significantly higher in Group 3 than that of Group 2 (p:.037 and p:.045, respectively). Direct microscopic examinations revealed positive changes in desquamation, oedema, inflammation and vasocongestion scores in Group 3 compared to Group 2 (p:.007, p:.008, p:.007 and p:.006, respectively). Dexmedetomidine has a protective effect against ischaemia-reperfusion injury in penile tissue.
Citation - WoS: 5
Citation - Scopus: 5
Variations in the fatty acid compositions of the liver and gonad tissue of spiny eel (Mastacembelus mastacembelus) from Ataturk Dam Lake
(WALTER DE GRUYTER GMBH, 2017) Kacar, Semra; Bashan, Mehmet
Objective: The aim of the study was to investigate quantitative and qualitative fatty acid profiles of the gonad and liver tissue of female Mastacembelus mastacembelus (spiny eel). Methods: Total lipids were extracted with 5 mL of chloroform-methanol (2:1 v/v). Samples containing gonad and liver lipid were transesterified with acidified methanol. The fatty acid methyl esters were extracted with hexane. Fatty acids were detected by gas chromatography (GC). Results: The major saturated fatty acids (SFAs) were myristic acid (C14:0), palmitic acid (C16:0) and stearic acid (C18:0) in both gonad and liver tissue. Oleic acid (C18:1 omega-9) and palmitoleic acid (C16:1 omega-7) were the prominent monounsaturated fatty acid (MUFA). The dominant polyunsaturated fatty acids (PUFAs) were linoleic acid (LA, C18:2 omega-6), arachidonic acid (AA, C20:4 omega-6), docosapentaenoic acid (C22:5 omega-3) and docoesahexaenoic acid (DHA, C22:6 omega-3). The ratio of omega-3/omega-6 ranged from 1.55 to 3.44 and 1.18 to 2.71 in the gonad and liver tissue, respectively. Conclusion: The findings of this study will be useful for understanding the seasonal distribution of fatty acid composition in the liver and gonad of spiny eel.
Citation - WoS: 2
Citation - Scopus: 2
The effect of body mass index on complications in cardiac implantable electronic device surgery
(WILEY, 2023) Güzel, Tuncay; Demir, Muhammed; Aktan, Adem; Kılıç, Raif; Arslan, Bayram; Günlü, Serhat; Altıntaş, Bernas; Karahan, Mehmet Zülkif; Özbek, Mehmet; Aslan, Burhan; Arpa, Abdulkadir; Coşkun, Mehmet Sait; Altunbaş, Mahsum; Tüzün, Rohat; Akgümüş, Alkame; Karadeniz, Muhammed; Aydın, Saadet; Güzel, Hamdullah; Aslan, Selen Filiz; Söner, Serdar; Taş, Ahmet; Ertaş, Faruk
Background: Cardiac implantable electronic device (CIED) procedures are prone to complications. In our study, we investigated the effect of body mass index (BMI) on CIED-related complications. Methods: 1676 patients who had undergone CIED surgery (de novo implantation, system upgrade, generator change, pocket revision or lead replacement) at two heart centers in Turkey and met the study criteria were included in our study. For analysis of primary and secondary endpoints, patients were classified as non-obese (BMI < 25 kg/m2), overweight (25 ≤ BMI < 30 kg/m2), and obese (BMI ≥ 30 kg/m2). The primary endpoint was accepted as cumulative events, including the composite ofclinically significant hematoma (CSH), pericardial effusion or tamponade, pneumoth- orax, and infection related to the device system. Secondary outcomes included each component of cumulative events. Results: The rate of cumulative events, defined as primary outcome, was higher in the obese patient group, and we found a significant difference between the groups (3.0%, 4.3%, 8.9%, p = .001). CSH and pneumothorax rates were significantly higher in the obese patient group (0.3%, 0.9%, 1.9%, p = .04; 1.0%, 1.4%, 3.3%, p = .04, respectively). According to our multivariate model analysis; gender (OR:1.882, 95%CI:1.156–3.064, p = .01), hypertension (OR:4.768, 95%CI:2.470–9.204, p < .001), BMI (OR:1.069, 95%CI:1.012–1.129, p = .01) were independent predictors of cumulative events rates. Conclusions: Periprocedural complications associated with CIED (especially hematoma and pneumothorax) are more common in the group with high BMI.
Citation - WoS: 5
Citation - Scopus: 5
Deep Learning-Based Artificial Intelligence Can Differentiate Treatment-Resistant and Responsive Depression Cases With High Accuracy
(Sage Publications inc, 2025) Metin, Sinem Zeynep; Uyulan, Caglar; Farhad, Shams; Erguzel, Tuerker Tekin; Turk, Omer; Metin, Baris; Tarhan, Nevzat
Background: Although there are many treatment options available for depression, a large portion of patients with depression are diagnosed with treatment-resistant depression (TRD), which is characterized by an inadequate response to antidepressant treatment. Identifying the TRD population is crucial in terms of saving time and resources in depression treatment. Recently several studies employed various methods on EEG datasets for automatic depression detection or treatment outcome prediction. However, no previous study has used the deep learning (DL) approach and EEG signals for detecting treatment resistance. Method: 77 patients with TRD, 43 patients with non-TRD, and 40 healthy controls were compared using GoogleNet convolutional neural network and DL on EEG data. Additionally, Class Activation Maps (CAMs) acquired from the TRD and non-TRD groups were used to obtain distinctive regions for classification. Results: GoogleNet classified the healthy controls and non-TRD group with 88.43%, the healthy controls and TRD subjects with 89.73%, and the TRD and non-TRD group with 90.05% accuracy. The external validation accuracy for the TRD-non-TRD classification was 73.33%. Finally, the CAM analysis revealed that the TRD group contained dominant features in class detection of deep learning architecture in almost all electrodes. Limitations: Our study is limited by the moderate sample size of clinical groups and the retrospective nature of the study. Conclusion: These findings suggest that EEG-based deep learning can be used to classify treatment resistance in depression and may in the future prove to be a useful tool in psychiatry practice to identify patients who need more vigorous intervention.
Citation - WoS: 2
Ismah of the Prophets in Mu'tazila
(DINBILIMLERI AKAD ARASTIRMA MERKEZI, 2015) Unverdi, Veysi
Ismah, one of the special attributes of Prophets in Kalam, is also adopted by Mu'tazila. Ismah is necessary in Mu'tazila for the safety of revelation and for the Prophet to be successful in risala duties. This quality, which the Messenger of Allah has before his prophethood, means he is immune from sins, indecent behavior, disgraceful act, bad moral structure and temperament that would arouse hatred and cause people to stay away from him. Prophet stays away from sin through his own will, and therefore he is not exempt from the proposal. He may commit small sins that won't arouse hatred, but which will lead to lack of merit. Indeed, the prophet is a mortal he is like other people except for his notification duty. Therefore he is also faulted in his humanly speech and decisions. As a result, ismah in Mu'tazila is regarded as a quality that protects the prophethood status. In this context, the quality that Mu'tazila persistently underlines is "not to arouse hatred". The main reason of the fact that they claim only acts that wouldn't arouse hatred could come out of the prophet is because they don't want to harm the confidence in prophetic institution In Mu'tazila, the bases of ismah are miracles, salah-aslah (God does for men what is to their greatest advantage, benefit) and justice principle, the principle of grace and prophet of hujjat. Accordingly, God has bestowed his favor on people by sending the prophet to let them know their interests. For this favor to be the greatest, it is necessary that he is innocent. The fact that he is supported by his miracles, and he is hujjat also requires protection. Otherwise, a non-innocent prophet may not reach his goal in Risala task. And this is incompatible with the fact that God is fair.
Citation - WoS: 7
Citation - Scopus: 9
The younger Dryas layer at Boncuklu Tarla and the beginning of village life in the upper Tigris Basin
(ScienceDirect, 2023) Kodaş, Ergül
Recent archaeological excavations in the Boncuklu Tarla, Çemka Hoyük, ¨ and Kortik ¨ Tepe settlements in the Upper Tigris Basin have provided a number of finds from the pre-PPNA Period, the Younger Dryas. The new data also opens up the concept of the Proto-Neolithic Period to discussion again, which has been controversial for a long time in the East Jazeera and Northwest Zagros Region. In this context, architectural remains and other small finds discovered in the Boncuklu Tarla settlement area make it possible to re-examine the transition to sedentary life in the Upper Tigris Basin during the Late Epipalaeolithic/Proto-Neolithic Period and the PPNA Period. These archaeological finds show that there were some semi-sedentary or sedentary communities in the Upper Tigris Basin, which exhibits unique geographical and climatic features, starting with the Younger Dryas Period. This is different from the Natufian culture that is thought to have emerged in the Mediterranean temperate climate zone and is known only in the Southern Levant Region.
The Effects of Elicitor and Abiotic Stressor Molecules on Phenolic Composition of in Vitro Callus Cultures of Elecampane (Inula Helenium L.)
(Soc Stiinte Farmaceutice Romania, 2025) Battal, Peyami; Akcura, Gokhan; Turker, Musa; Dalar, Abdullah
This study focused on the effects of various stressors and elicitors on phenolic metabolism of in vitro callus cultures of Elecampane. 1 mg/L 2,4-Dichlorophenoxyacetic acid (2,4-D) + 0,3 mg/L Kinetin (KN) formulation was detected as the most proper application for callus production. Quercetin was synthesized as the dominant phenolic compound of callus cultures. The highest values of total phenolics were obtained through the combination of 6-Benzylaminopurine + 1-Naphthaleneacetic acid (BAP+NAA) in the plant growth regulators (PGR) group (169 mu g/g), 1/2 reduced Murashige and Skoog medium (MS) (108 mu g/g) in the stressor group, and both abscisic acid (140 mu g/g) and melatonin (138 mu g/g) in the elicitor group. The application of various PGRs and elicitors enhanced the level of quercetin at pronounced levels (241-388 mu g/g), but not in rutin (3-18 mu g/g). Chlorogenic acid increased under silver nitrate (19 mu g/g) and 1/4 reduced MS stressors (17 mu g/g) and melatonin (32 mu g/g) and abscisic acid (24 mu g/g) elicitors. These findings suggest that the combination of 2,4-D + KN, reduced MS, abscisic acid, and melatonin conditions stimulated the synthesis of phenolics through the biosynthetic pathway by increasing the stress resistance of Elecampane.
Citation - WoS: 34
Citation - Scopus: 38
Fabrication and characterization of 3,4-diaminobenzophenone-functionalized magnetic nanoadsorbent with enhanced VOC adsorption and desorption capacity
(Environmental Science and Pollution Research, 2021) Ece, Mehmet Şakir; Şahin, Ömer; Kutluay, Sinan; Horoz, Sabit
The present study, for the first time, utilized 3,4-diaminobenzophenone (DABP)-functionalized Fe3O4/AC@SiO2 (Fe3O4/AC@SiO2@DABP) magnetic nanoparticles (MNPs) synthesized as a nanoadsorbent for enhancing adsorption and desorption capacity of gaseous benzene and toluene as volatile organic compounds (VOCs). The Fe3O4/AC@SiO2@DABP MNPs used in adsorption and desorption of benzene and toluene were synthesized by the co-precipitation and sol-gel methods. The synthesized MNPs were characterized by SEM, FTIR, TGA/DTA, and BET surface area analysis. Moreover, the optimization of the process parameters, namely contact time, initial VOC concentration, and temperature, was performed by applying response surface methodology (RSM). Adsorption results demonstrated that the Fe3O4/AC@SiO2@DABP MNPs had excellent adsorption capacity. The maximum adsorption capacities for benzene and toluene were found as 530.99 and 666.00 mg/g, respectively, under optimum process parameters (contact time 55.47 min, initial benzene concentration 17.57 ppm, and temperature 29.09 °C; and contact time 57.54 min, initial toluene concentration 17.83 ppm, and temperature 27.93 °C for benzene and toluene, respectively). In addition to the distinctive adsorptive behavior, the Fe3O4/AC@SiO2@DABP MNPs exhibited a high reproducibility adsorption and desorption capacity. After the fifth adsorption and desorption cycles, the Fe3O4/AC@SiO2@DABP MNPs retained 94.4% and 95.4% of its initial adsorption capacity for benzene and toluene, respectively. Kinetic and isotherm findings suggested that the adsorption mechanisms of benzene and toluene on the Fe3O4/AC@SiO2@DABP MNPs were physical processes. The results indicated that the successfully synthesized Fe3O4/AC@SiO2@DABP MNPs can be applied as an attractive, highly effective, reusable, and cost-effective adsorbent for the adsorption of VOC pollutants. Graphical abstract[Figure not available: see fulltext.]
Citation - WoS: 15
Citation - Scopus: 17
Electrocatalysis property of CuZn electrode with Pt and Ru decoration
(International Journal of Hydrogen Energy, 2021) Toprak Döşlü, Serap; Döner, Ali; Yıldız, Reşit
Electrocatalysis properties strongly depend on the interaction of metallic particles and this interaction enables to change the electronic structure of alloys which enhances the catalytic activity. This property is the key factor in the developing of cost-effective and efficient Hydrogen Evolution Reaction (HER) electrocatalysts for sustainable hydrogen production. In this study, novel electrocatalysts which are decorated with Pt and Ru have been developed for HER electrocatalysis. Microscopic analysis such as scanning electron microscopy (SEM), energy dispersive X-ray (EDX), X-ray diffraction (XRD) and atomic force microscopy (AFM) are performed to determine the morphological and compositional structures. Electrocatalysis properties are evaluated by cathodic current-potential curves, electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) in 1.0 M KOH solution. Chronoamperometry (CA) and cycle tests are used for stability/durability of electrocatalysts. Results show that a small onset potential of the porous Cu/Ni/CuZn–Pt is obtained for HER. Exchange current density and polarization resistance are found to be 5.39 mA cm−2 and 2.0 Ω cm2 at overpotential of −100 mV for porous Cu/Ni/CuZn–Pt, respectively, indicating that Cu/Ni/CuZn–Pt is higher electrocatalytic properties than the others. Moreover, very low overpotentials at 10 and 40 mA cm−2 are obtained on porous Cu/Ni/CuZn–Pt compared with porous Cu/Ni/CuZn–Ru and Cu/Ni/CuZn. Porous Cu/Ni/CuZn–Pt also displays excellent stability/durability in test solution. The remarkable electrocatalysis properties of porous Cu/Ni/CuZn–Pt can be explained due to high porous structure, leaching of Zn from the deposit, intrinsic activity of Pt as well as changing in the electronic structure. It should be considered that porous Cu/Ni/CuZn–Pt is of high corrosion resistance in test solution for 120 h, which makes it good candidate for HER.
Cytotoxic Effect of Zinc Oxide and Selenium Nanoparticles Synthesized From Orobanche Picridis on Lung Cancer as Well as Their Antimicrobial and Antioxidant Properties
(Wiley, 2025) Ercan, Leyla; Caliskan, Cemile Gunbegi
Orobanche picridis represents a fascinating example of an obligate parasitic plant due to its lack of chlorophyll. It is of significant interest to botanists, ecologists, and biologists because of its complex parasitic lifestyle and specific host preferences. The purpose of this work was to generate zinc oxide (OrZnO) nanoparticles (NPs) and selenium (OrSe) nanoparticles from O. picridis and examine their characterization as well as their antibacterial, anticarcinogenic, and antioxidant characteristics. To this purpose, the produced NPs were characterized utilizing a scanning electron microscope, energy-dispersive X-ray spectroscopy, X-ray diffraction, and Fourier-transform infrared spectroscopy. The antimicrobial activity of OrZnO and OrSe NPs was assessed employing the disc diffusion and agar well diffusion methods, while in vitro antioxidant activity was assessed through three different assays: DPPH, FRAP, and ABTS. The MTT assay was utilized to ascertain the cytotoxicity of these nanoparticles against lung cancer, and acridine orange/ethidium bromide staining was carried out to analyze morphological and DNA alterations in these cells. Consequently, the synthesized OrZnO NPs exhibited stronger antibacterial capabilities than the OrSe NPs, while both demonstrated antioxidant properties. In addition to their potent cytotoxic action, both NPs induced apoptosis by altering the DNA and shape of the lung cancer (A549) cells.
Citation - WoS: 15
Citation - Scopus: 15
Investigations of Hg(II) and Pb(II) tolerance, removal and bioaccumulation and their effects on antioxidant enzymes on thermophilic Exiguobacterium profundum
(Taylor and Francis Inc., 2019) Akkoyun M.B.; Özdemir S.; Kılınç E.; Birhanlı E.
Hg(II) and Pb(II) tolerance, removal, bioaccumulation and effects on antioxidant enzymes of thermophilic Exiguobacterium profundum were investigated. The results indicated that Hg(II) was more toxic than Pb(II) to E. profundum. E. profundum was also more tolerant in solid medium than in liquid medium for Pb(II) and Hg(II). The bacterial growth was not significantly influenced at 1.0 and 2.5 mg/L Pb(II) and Hg(II) for 24 h. The highest Hg(II) and Pb(II) bioaccumulation amounts were determined as 37.56 and 54.35 mg metal/dried bacteria, respectively. Bioaccumulation capacities of the cell membrane of E. profundum forHg(II) and Pb(II)were determined. The different concentrations of Pb(II) and Hg(II) enhanced the SOD and CAT enzymes. In addition, variations of the surface macrostructure and the functionality of E. profundum after the interaction with Hg(II) and Pb(II) were investigated by the scanning electron microscope (SEM) and the Fourier transform infrared spectroscopy (FT-IR), respectively. This investigation obviously showed that thermophilic E. profundum can also be applied for removal and recovery of toxic metals from industrial wastewater. Clearly, a further investigation should be utilized by thermophilic microorganisms. According to antioxidant enyzme activities, E. profundum can be also used as a bioindicator for the detection of toxic metal pollution in natural water samples. © 2019, © 2019 Taylor & Francis Group, LLC.
Citation - WoS: 3
Citation - Scopus: 3
Muay Thai Exercises Improve Quality of Life, Love of Life and Self-Control
(Frontiers Media Sa, 2025) Sahin, Oktay; Yilmaz, Coskun; Sezer, Sureyya Yonca; Sahin, Fatma Nese; Ceylan, Levent; Celikel, Baha Engin; Kirikoglu, Nagihan
Background The existing research on Muay Thai sports has focused predominantly on the physiological effects of training, with limited attention devoted to the study of quality of life, love of life and self-control. The present study examined the effects of Muay Thai exercises on quality of life, love of life and self-control scores in healthy male subjects. Methods The present study comprised 50 healthy sedentary male subjects. The subjects were randomly divided into two groups: one group engaged in Muay Thai training (MTT), while the other group served as a control group (CON). The sample sizes for the MTT and CON groups were both 25. The MTT group participated in basic Muay Thai training, while the CON group continued their normal life regime. The SF-12 quality of life scale, love of life scale and multidimensional self-control scale were administered before and after the six-week training period. Results The study concluded that the six-week Muay Thai training program had a significant effect on quality of life levels, with 13.23% (p = 0.003) and 21.93% (p < 0.001) of participants demonstrating improvements in physical and mental scores, respectively. In terms of self-control levels, the program was found to have a significant effect on initiation and inhibition scores, with increases of 23.78% (p = 0.001) and 24.69% (p < 0.001), respectively. It was concluded that had a significant effect on the sub-dimensions of the Love of Life scale with increases of Positive Attitude Toward Life (PAWL) 18.63% (p < 0.001), Happy Results of the Love of Life (HRLL) 20.11% (p < 0.001) and Meaningfulness of Life (ML) 15.62% (p < 0.001), respectively. However, no significant differences were detected in any of the scales within the control group. Conclusion Muay Thai exercises had a positive effect on quality of life, love of life and self-control levels in healthy male subjects. By providing valuable insights into how Muay Thai exercise affects quality of life, love of life, and self-control, this research can guide future intervention and program design in the context of sport psychology.
Citation - WoS: 32
Citation - Scopus: 41
The effect of ethnocentrism and moral sensitivity on intercultural sensitivity in nursing students, descriptive cross-sectional research study
(Nurse Education Today, 2021) Yaşar, Beril Nisa; Kaya, Yunus; Arslan, Sevda; Erbaş, Atiye; Küçükkelepçe, Gürhan Erkuş
Background: Factors affecting intercultural sensitivity and care are becoming an increasingly important issue due to ethnic diversity. Nurses play a crucial role in care and therefore should keep up with this trend and improve their intercultural sensitivity. Objective and design: This descriptive cross-sectional study investigated the effects of ethnocentrism and moral sensitivity on intercultural sensitivity in nursing students. Methods and participants: Data were collected using a demographic characteristics questionnaire and the Intercultural Sensitivity Scale, Generalized Ethnocentrism Scale, and Moral Sensitivity Scale. The sample consisted of 1343 nursing students. The Pearson correlation coefficient was used to determine correlations between scale scores. Multiple linear regression was used to determine the effects of ethnocentrism, moral sensitivity, and demographic characteristics on intercultural sensitivity. Results: Intercultural sensitivity was found to be negatively correlated with ethnocentrism and positively correlated with moral sensitivity. Ethnocentrism predicted intercultural sensitivity more than moral sensitivity. Ethnocentrism and moral sensitivity explained 16.8% of the total variance of intercultural sensitivity. However, ethnocentrism affected intercultural sensitivity more than moral sensitivity did (beta = −0.406). Conclusion: Nursing education should adopt strategies to reduce ethnocentrism by helping students develop cultural competence and intercultural sensitivity. Such education can equip nurses to provide higher quality care to patients of different cultural backgrounds.
Citation - WoS: 3
Exergo Economic Analysis of the Ground Source Heat Pump for Cooling Seasons in the Mardin Province
(Yildiz Technical Univ, 2014) Unal, Fatih; Ünal, Fatih; Temir, Galip
Nowadays, the effective and efficient use of energy has become an indispensable necessity due to energy sources gradually are decreasing and energy prices are increasing. In this study the experimental results of vertical type ground source heat pump pump for cooling seasons for a test site which is 120 m(2) experimental ground area in Midyat/Mardin. After examining the results of studies energy, exergy and eksergo economic analysis was performed over the system. According to the analysis of the system it was determined that the compressor cooling process is of 3,704 kW best heat loss, 1.6539 kW the highest exergy loss, 0.4658 $/h and cost rate associated with capital investment, 0.7464 $/h and the high cost of exergy, exergy loss 44,72% rate of 38.43% and values eksergo economic factors. For this reason, it is inevitable that the planned improvements should be carried out primarily compressor. As a result; our system is quite effective in both reduce energy consumption and reducing greenhouse gas emissions.

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