Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Zengin, Gokhan(26)
- Erten, Fusun(20)
- Orhan, Cemal(17)
- Sahin, Kazim(17)
- Gul, Muhammet(15)
- Benzer, Fulya(12)
- Kocabaş, Mehmet(12)
- Aglar, Erdal(11)
- Serdar, Osman(11)
- Akkurt, Nevzat(10)
- Topal, Murat(10)
- Yeşiltepe, Akgün(10)
- Yucesan, Melih(10)
- Danabas, Durali(9)
- Er, Besir(9)
- Kutlu, Banu(9)
- Mahomoodally, Mohamad Fawzi(9)
- Uba, Abdullahi Ibrahim(9)
- Yildirim, Ozal(9)
- Öbek, Erdal(9)
- Acharya, U. Rajendra(8)
- Alp Dal, Nursel(8)
- Cakilcioglu, Ugur(8)
- Kandemir, Fatih Mehmet(8)
- Yildirim, Nuran Cikcikoglu(8)
- Arslan Topal, E. Işıl(7)
- Baloglu, Ulas Baran(7)
- Ozbey, Ulku(7)
- Sahin, Nurhan(7)
- Talo, Muhammed(7)
- Ates, Mehmet(6)
- Attar, Rukset(6)
- Dal, Nursel Alp(6)
- Gümüşsoy, Süreyya(6)
- Gürarslan Baş, Nazan(6)
- Ince, Muharrem(6)
- Kaplan Serin, Emine(6)
- Kutluyer, Filiz(6)
- Ozturk, Burhan(6)
- Aksu, Onder(5)
Yayınlar
- MakaleAçık Erişim2022Scopus SJRQ1Which Extraction Solvents and Methods Are More Effective in Terms of Chemical Composition and Biological Activity of Alcea fasciculiflora from Turkey?
Ozturk, Refiye Beyza; Zengin, Gokhan; Sinan, Kouadio Ibrahime; Montesano, Domenico; Zheleva-Dimitrova, Dimitrina; Gevrenova, Reneta; Uba, Abdullahi Ibrahim; Çakılcıoğlu, Uğur; Kaplan, Alevcan; Jugreet, Sharmeen
The bioactive content, antioxidant properties, and enzyme inhibition properties of extracts of Alcea fasciculiflora from Turkey prepared with different solvents (water, methanol, ethyl acetate) and extraction methods (maceration, soxhlet, homogenizer assisted extraction, and ultrasound assisted extraction) were examined in this study. UHPLC-HRMS analysis detected or annotated a total of 50 compounds in A. fasciculiflora extracts, including 18 hydroxybenzoic and hydroxycinnamic acids, 7 Hexaric acids, 7 Coumarins, 15 Flavonoids, and 3 hydroxycinnamic acid amides. The extracts had phenolic and flavonoid levels ranging from 14.25 to 24.87 mg GAE/g and 1.68 to 25.26 mg RE/g, respectively, in the analysis. Both DPPH and ABTS tests revealed radical scavenging capabilities (between 2.63 and 35.33 mg TE/g and between 13.46 and 76.27 mg TE/g, respectively). The extracts had reducing properties (CUPRAC: 40.38–78 TE/g and FRAP: 17.51–42.58 TE/g). The extracts showed metal chelating activity (18.28–46.71 mg EDTAE/g) as well as total antioxidant capacity (phosphomolybdenum test) (0.90–2.12 mmol TE/g). DPPH, ABTS, FRAP, and metal chelating tests indicated the water extracts to be the best antioxidants, while the ethyl acetate extracts had the highest overall antioxidant capacity regardless of the extraction technique. Furthermore, anti-acetylcholinesterase activity was identified in all extracts (0.17–2.80 mg GALAE/g). The water extracts and the ultrasound-assisted ethyl acetate extract were inert against butyrylcholinesterase, but the other extracts showed anti-butyrylcholinesterase activity (1.17–5.80 mg GALAE/g). Tyrosine inhibitory action was identified in all extracts (1.79–58.93 mg KAE/g), with the most effective methanolic extracts. Only the ethyl acetate and methanolic extracts produced by maceration and homogenizer aided extraction showed glucosidase inhibition (0.11–1.11 mmol ACAE/g). These findings showed the overall bioactivity of the different extracts of A. fasciculiflora and provided an overview of the combination of solvent type and extraction method that could yield bioactive profile and pharmacological properties of interest and hence, could be a useful reference for future studies on this species.
AtıfScopus17OpenAlex20
İncele - MakaleAçık Erişim2022Scopus SJRQ1Relationship between the symptoms of COPD and the quality of sexual life
Kaplan Serin, Emine; Alp Dal, Nursel; Gümüşsoy, Süreyya
Objective: This study was conducted to assess the relationship between the symptoms experienced by women with COPD and the quality of their sexual life. Method: This study was designed as a descriptive cross-sectional study. The study was conducted at a hospital’s chest diseases clinic located in the western of Turkey. The sample comprises 62 female patients hospitalized with diagnosis of COPD. A questionnaire form, the Medical Research Council Scale (MRCS), the COPD Assessment Test (CAT) and the Sexual Quality of Life-Female (SQOL-F) applied to the women with COPD. Frequency, percentage, mean, standard deviation, Kruskal Wallis test, Mann-Whitney U Test, correlation and regression analysis, were used for the data analysis process. Findings: The decrease in the education level of the participants who have any accompanying chronic disease, and experience symptoms during sexual intercourse negatively affects their quality of sexual life. The quality of sexual life decreases as age, duration of marriage and duration of illness increase (p < 0.05). The results of the linear regression analysis carried out to predict the quality of sexual life of women with COPD shown that the increase in mMRC and CAT significantly decreased the quality of sexual life. These variables explain 58% of the variance. Conclusions: The result of the study shown the sexual quality of life of women with COPD was impaired and COPD symptoms affect them.
AtıfScopus7WoS6OpenAlex11İncele - MakaleYalnız künye2022Scopus SJRQ3The adaptation of the Well-Being in Pregnancy (WiP) Questionnaire into Turkish: validity and reliability of a questionnaire
Sunay, Zeliha; Sabancı Baransel, Esra; Uçar, Tuba
This study aimed to adapt the Well-Being in Pregnancy (WiP) Questionnaire into Turkish and assess the instrument’s validity and reliability in pregnant women. Exploratory factor analysis (EFA) was applied to 500 pregnant women included in Sample I, while confirmatory factor analysis (CFA) was applied to 386 pregnant women in Sample II. As a result of the EFA applied to Sample I, it was found that the 12-item WiP encompasses two factors (Positive Affect and Satisfaction subscale and Concerns subscale), and as a result of the CFA applied to Sample II, it was found that the scale has good fit indices (χ 2/df = 1.990, p =.000, CFI = 0.95, GFI = 0.95, AGFI = 0.93, RMSEA = 0.04, and PCLOSE = 0.000). The Cronbach’s alpha internal consistency coefficients that were obtained as a result of the reliability analyses of the scale were found as 0.72, 0.70 and 0.60 for all items of WiP, its first subscale and its second subscale, respectively. It was found that the item-total correlations of the scale varied in the range of r = 0.44–0.55 (p <.001). In the test–retest analysis, a statistically significant positive correlation was found between the total scores of the scale obtained in two different implementations (r = 0.412, p =.024). This study supported the use of WiP as a valid and reliable instrument for Turkish pregnant women. Impact StatementWhat is already known on this subject? The Well-Being in Pregnancy (WiP) Questionnaire developed in 2017 by Alderdice et al. is a measurement tool that is used to determine the positive and negative emotions of pregnant women. This questionnaire has not been translated to other languages. What do the results of this study add? The reliability and validity of the Turkish version of WiP were found to acceptable, and two subscales were identified as the Positive Affect and Satisfaction subscale and the Concerns subscale. What are the implications of these findings for clinical practice and/or further research? This reliable and valid instrument can be used for measuring the whole spectrum of well-being rather than just poor psychological health.
AtıfScopus3WoS1OpenAlex6İncele - MakaleAçık Erişim2022Scopus SJRQ2Health, safety, and environmental failure evaluation by hybridizing fuzzy multi-attribute decision-making methods for maritime scrubber systems
Başhan, Veysi; Yucesan, Melih; Demirel, Hakan; Gul, Muhammet
Many shipping companies have started using scrubbers in their fleet to eliminate sulfur emissions from ships, per IMO (International Maritime Organization) rules. Before and during the scrubbers’ selection, the scrubbers’ operational failures have also started to appear and cause serious concerns. In this study, classified scrubber types are explained and open type, closed type, and hybrid scrubber systems are evaluated. To contribute to this gap in the literature, scrubber failures were identified, five experts with different perspectives were consulted, and the most common and critical malfunctions were evaluated with the fuzzy best–worst method (F-BWM) and fuzzy technique for order preference by similarity to an ideal solution (F-TOPSIS). F-BWM was used to determine the importance weights of the risk parameters used in evaluating failures since it provides fewer comparisons among pairwise comparison–based decision-making methods and a more consistent judgment in the evaluation. F-TOPSIS, on the other hand, was used to determine the final priority scores of the scrubber failures, taking into account the risk parameter weights obtained in the first stage. It has been preferred due to its easy to useness and based on its closeness to the ideal solution and applicability to risk and failure analysis problems. Considering all different systems in general, important issues such as collection efficiency, sulfur emission problem, abrasion, leakages, pump failures, heat exchanger failures, air fan sealing failures, sensors and failures in monitoring the whole system have been investigated. Results show that too high axial velocity for separator and flooded separator, too high solids concentration in recirculation liquid (SF2), piping leakages (SF5), poor quality or inappropriate consumables and chemicals (SF11), and feed circulation pump problems (SF6) are found to be the most important problems among thirteen failures.
AtıfScopus23OpenAlex23İncele - MakaleYalnız künye2022Scopus SJRQ2Sperm quality and oxidative stress in chub Squalius orientalis and Padanian barbel Barbus plebejus (Teleostei: Cyprinidae) after in vitro exposure to low doses of bisphenol A
Kutluyer, Filiz; Çakir Sahilli, Yeliz; Kocabaş, Mehmet; Aksu, Önder
In an aquatic environment, the presence of Bisphenol A (BPA) adversely affects reproduction, biology, behavior, gonads, and early larval development of fish due to being endocrine-disrupting compound. In addition, the detected concentration of BPA in water bodies is reported to be higher than 0.41 μg/L. As an alternative tool, sperm cells are used in toxicological assays for the reliable and practical assessment. For these reasons, we examined the effects of in vitro exposure of BPA on sperm quality of chub Squalius oriantalis and Padanian barbel Barbus plebejus. Spermatozoa were exposed to lower concentrations (0, 0.5, 1.25, 2.5, and 5 µg/L) of BPA for 2 h. The enzymatic activities [glutathione peroxidase (GSH-Px), catalase (CAT), and superoxide dismutase (SOD)] and lipid peroxidation (MDA) were evaluated in spermatozoa. The results demonstrated that BPA exposure significantly decreased activities of SOD and GSH-Px but increased CAT activity and lipid peroxidation (MDA). Compared to control, the percentage and duration of sperm motility significantly decreased. Overall, spermatozoa clearly showed the sensitivity to lower concentrations of BPA.
AtıfScopus16WoS17OpenAlex14İncele - MakaleYalnız künye2022Scopus SJRQ2Green Synthesis (Paeonia kesrouanensis) of Silver Nanoparticles and Toxicity Studies in Artemia salina
Unal, İlkay; Egri, Sinan; Ates, Mehmet
This study aims to describe a simple and environmentally friendly procedure for producing silver nanoparticles (AgNPs) using Paeonia kesrouanensis (P. kesrouanensis) extracts and to determine the toxic effect in the aquatic environment. The morphologies, size, size distributions, and structural properties were analyzed using SEM-EDX, TEM, DLS, zeta potential, FTIR, and XRD. AgNPs were applied to Artemia salina (A.salina), aquatic organism individuals at 7 different concentrations (0.0, 0.2, 1, 5, 10, 25, 50 mg/L) for 24, 48, and 72 h. AgNPs accumulation and elimination, ion release amounts, and the survival rates of organisms were determined at periods of 24, 48, and 72nd hours. The highest accumulation was observed at the 24th hour at the 50 mg/L exposure level. The survival rate decreased as exposure time increased at all concentrations.
AtıfScopus6WoS5OpenAlex6İncele - MakaleAçık Erişim2022Scopus SJRQ1Control measure prioritization in Fine − Kinney-based risk assessment: a Bayesian BWM-Fuzzy VIKOR combined approach in an oil station
Gul, Muhammet; Yucesan, Melih; Ak, Muhammet Fatih
The Fine − Kinney is a risk assessment method widely used in many industries due to its ease of use and quantitative risk evaluation. As in other methods, it is a method that recommends taking a series of control measures for operational safety. However, it is not always possible to implement control measures based on the determined priorities of the risks. It is considered that determining the priorities of these measures depends on many criteria such as applicability, functionality, performance, and integrity. Therefore, this study has studied the prioritization of control measures in Fine − Kinney-based risk assessment. The criteria affecting the prioritization of control measures are hierarchically structured, and the importance weights of the criteria are determined by the Bayesian Best–Worst Method (BBWM). The priorities of control measures were determined with the fuzzy VlseKriterijumska Optimizacija I Kompromisno Resenje (FVIKOR) method. The proposed model has been applied to the risk assessment process in a petrol station’s liquid fuel tank area. According to the results obtained with BBWM, the most important criterion affecting the prioritization of control measures is the applicability criterion. It has an importance weight of about 42%. It is followed by performance with 31%, functionality with 18%, and integrity with 10%, respectively. FVIKOR results show that the “Periodic control of the ventilation device” measure is the top priority for Fine − Kinney risk assessment. “The absence of any ducts or sewer pits that may cause gas accumulation in the tank area and near the dispenser; Yellow line marking of entry and exit and vehicle roads; Placing of speed limit warning signs” has been determined as a secondary priority. On conclusion, this proposed model is expected to bring a new perspective to the work of occupational health and safety analysts, since the priority suggested by Fine − Kinney risk analysis methods is not always in the same order as the one in the stage of taking action, and the source, budget, and cost/benefit ratio of the measure affect this situation in practice.
AtıfScopus51WoS42OpenAlex54İncele - MakaleAçık Erişim2022Scopus SJRQ1Phytochemical Profile and Biological Activities of the Extracts from Two Oenanthe Species (O. aquatica and O. silaifolia)
Świątek, Łukasz; Sieniawska, Elwira; Mahomoodally, Mohamad Fawzi; Sadeer, Nabeelah Bibi; Wojtanowski, Krzysztof Kamil; Rajtar, Barbara; Polz-Dacewicz, Małgorzata; Paksoy, Mehmet Yavuz; Zengin, Gokhan
This study presents the evaluation of biological activities and chemical profiling of Oenanthe aquatica (L.) Poir. and Oenanthe silaifolia M. Bieb. The phytochemical profile, antioxidant, enzyme inhibitory, cytotoxic and antiviral activities of the methanolic and aqueous extracts were investigated. The aqueous extract of O. aquatica possessing the highest content of phenolics (60.85 mg gallic acid equivalent/g extract), also exhibited the strongest radical scavenging potential against 2,2-diphenyl-1-picrylhydrazyl and 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (79.46 and 148.66 mg Trolox equivalent/g extract, respectively), the highest reducing ability (207.59 and 107.27 mg Trolox equivalent/g extract, for cupric reducing antioxidant capacity and ferric reducing antioxidant activity, respectively), metal chelating potential (33.91 mg ethylenediaminetetraacetic acid equivalent/g extract) and total antioxidant ability (1.60 mmol Trolox equivalent/g extract). Liquid chromatography-electrospray ionization-quadrupole time-of-flight-mass spectrometry (LC-ESI-QTOF-MS/MS) permitted tentative identification of compounds from simple organic acids, phenolic acids, coumarins, flavonoids and their glycosides in O. aquatica and O. silaifolia extracts. The methanolic extract of O. aquatica substantially depressed acetylcholinesterase (3.67 mg galantamine equivalent/g extract), tyrosinase (126.66 mg kojic acid equivalent/g extract), and α-amylase (0.83 mmol acarbose equivalent/g extract) enzymes. The methanolic extract of O. silaifolia showed highest enzymatic inhibitory property against butyrylcholinesterase, and its aqueous extract depressed α-glucosidase activity (0.26 mmol acarbose equivalent/g extract). All tested extracts exerted selective toxicity towards cancer cell lines, and the highest anticancer potential was found for O. aquatica aqueous extract on FaDu and HeLa cells with CC50 of 57.36 and 47.16 µg/mL, respectively. Significant antiviral activity against HSV-1 (HHV-1) was found for both aqueous extracts in concentrations of 1000 µg/mL, which inhibited the HSV-1 cytopathic effect (CPE) in virus infected VERO cells and reduced the virus infective titer by more than 3 log (logCCID50 /mL). This study has produced critical scientific data on O. aquatica and O. silaifolia, which are potential contenders for the development of novel phyto-pharmaceuticals.
AtıfScopus15WoS14İncele - MakaleAçık Erişim2022Scopus SJRQ2Determination of trace element and fatty acid levels in tissues of mirror and scaly carp (Cyprinus carpio L., 1758) living in Keban Dam Reservoir (Elazig)
Aydın, Sevinç; Akkoyun, H. Turan; Bayramoglu Akkoyun, Mahire; Bengu, Aydın Ş.; Ekin, Suat; Harlioğlu, Ayşe G.
This study investigated the concentrations of some accumulated trace metals (iron, manganese, zinc and copper) and fatty acids in liver and muscle tissues of mirror and scaly carp varieties (Cyprinus carpio L., 1758) living in Keban Dam Reservoir (Elazig), which is the second-largest artificial lake in Turkey that hosts commercially valuable and preferred fish varieties for human consumption. The inductively coupled plasma mass spectrometry (ICP-MS) method was used to analyse the concentrations of trace elements. Fatty acid levels were measured in a gas chromatography mass spectrometry (GC–MS) device, using a flame ionization detector (FID). Considering the two fish varieties and tissues that were studied, the mean metal concentrations (μg g−1) were found in the following ranges: Fe 12.32–49.97, Mn 0.12–0.62, Zn 10.45–86.59 and Cu 2.74–11.86. Although the lowest levels were detected in the muscle tissue for all the metals examined, the levels in the liver tissue were significantly higher. According to the results of the analyses on fatty acid concentrations, the mean total saturated fatty acid levels in the muscle tissue of the scaly carp and mirror carp varieties were found to be 31.07 and 31.43 (%), respectively, whereas these values for the liver tissue were consecutively 22.36 and 22.08 (%). Successively, the mean total levels of unsaturated fatty acids were determined as 68.93 and 68.40 (%) in the muscle tissue and 77.64 and 77.92 in the liver tissue. This study, with the finding that the trace (metallic) element accumulation rates were below the upper limits of the tolerable range, and the examined fish varieties were rich in fatty acids, shows that mirror carp and scaly carp living in Keban Dam Reservoir are highly nutritious for human diets.
AtıfScopus1OpenAlex2İncele - MakaleAçık Erişim2022Scopus SJRQ2Investigation of body image perception, self-esteem, and self-confidence in female-to-male transsexuals before and after sex reassignment surgery
Gümüşsoy, Süreyya; Hortu, İsmet; Dönmez, Sevgül; Alp Dal, Nursel; Ergenoğlu, Ahmet M.
Purpose: The study was aimed at investigatting the changes in body image perception, self-esteem, and self-confidence of female-to-male transsexuals (FtM) after sex reassignment surgery (SRS). Design and Methods: The quasi-experimental study was conducted with the female individuals who undergo FtM SRS between May 2018 and May 2019. The study data were collected using the Personal Information Form, Body Image Scale, Coopersmith Self-Esteem Inventory, and Self-Confidence Scale. Findings: It was observed that the patients' postoperative body image perception, self-esteem, and self-confidence improved. As their postoperative body image perception was higher than was their preoperative body image perception, their postoperative self-esteem and self-confidence levels were also higher. In addition, as their self-esteem increased, so did their self-confidence. Practice Implications: It was found that the patients' postoperative body image perception, self-esteem, and self-confidence improved.
AtıfScopus4WoS6OpenAlex5İncele - MakaleAçık Erişim2022Scopus SJRQ3Examination of diaphragm thickness, mobility and thickening fraction in individuals with COPD of different severity
Topcuoğlu, Ceyhun; Tütün Yümin, Eylem; Hizal, Mustafa; Konuk, Suat
Background/aim: Diaphragm thickness and mobility assessed by ultrasound in individuals with Chronic Obstructive Pulmonary Disease (COPD) reflect the function of the diaphragm. The aim of this study is to compare the diaphragm thickness, mobility, and thickening fraction in individuals with COPD of different severity and healthy individuals and examine the relationship between these parameters and pulmonary function test parameters. Materials and methods: A cross-sectional observational study design was used. Thirty individuals (mild = 11; moderate = 13; severe = 6) with COPD and 29 healthy male individuals aged between 40–75 years were included in the study. The individuals included in the study were evaluated between October 2020/May 2021. Pulmonary functions were measured with a spirometer, while diaphragm thickness, mobility, and thickening fraction were measured by ultrasound. Results: The right and left diaphragm thickness, mobility, thickness variation, thickening fraction, and mobility were lower in individuals with COPD than in healthy individuals (p < 0.05). The left Functional Residual Capacity (FRC) diaphragm thickness, right Total Lung Capacity (TLC), and FRC diaphragm thickness were higher in mild COPD than moderate COPD and moderate COPD than severe COPD (p < 0.05). The right diaphragmatic thickening fraction and rate were higher in mild COPD than in moderate and severe COPD (p < 0.05). The left mobility was lower in severe COPD than in mild COPD (p < 0.05). Conclusion: Diaphragm ultrasound parameters decrease as disease severity increases in individuals with COPD. We think that adding diaphragm ultrasound parameters together with pulmonary function test to the evaluation of individuals with COPD will provide additional contributions to determining the course of the disease.
AtıfScopus17WoS17OpenAlex17TR Dizin1
İncele - MakaleAçık Erişim2022Evaluation of health managers’ opinions about decentralization in health services; [Sağlık Yöneticilerinin Sağlık Hizmetlerinde Desantralizasyona İlişkin Görüşlerinin Değerlendirilmesi]
Bas, Kazim; Sur, Haydar
OBJECTIVE: It was aimed to determine the opinions of health-care managers on theimplementation of decentralization in health-care services. METHODS: The research is a cross-sectional and descriptive study.Sample of the study included 261 health managers. Research data were collected from health-care managers between June 8 and July 17, 2020, using face-to-face interviews technic by a questionnaire, in an average of 20–25 minutes. The obtained data were transferred to the computer environment and analyzed with the number, percentage, and Chi-square tests. RESULTS: About 52.5% of the health managers stated that health-care services should be provided by the public, 63.2% of them stated that health-care services should be a form of empowered decentralization, 41.8% of them stated that decentralization could be successful in Turkiye, 62.6% stated that decentralization would provide flexibility in health-care management, 70.3% of them said that it could find solutions to the problems, and 73.3% of them stated that it will improve employee performance whereas 44.9% of them stated that it would negatively affect providing services in integrity, 67.2% of them stated that it would cause regional inequalities, 73.2% of them said that local factors will intervene in health-care services, and 57.9% reported that it would weaken the central power. CONCLUSION: The majority of health-care managers prefer that health-care services are provided by the public health-care service and prefer the empowered decentralization of health-care services. More than half of the health-care managers expressed their positive views such as the fact that decentralization provides flexibility in health-care services, improve the performance, and participation in service along with the negative views such as the fact that decentralization negatively affects the service delivery, causes regional inequalities and intervention of local factors, and weakens the central power.
AtıfScopus1WoS1OpenAlex2İncele - MakaleAçık Erişim2022Scopus SJRQ2Investigation of the effect of the life satisfaction and psychological well-being of nursing students on their happiness levels
Yeşi̇ltepe, Akgün; Sayar, Serap; Çal, Ayşe
Purpose: This study aims to examine the effect of nursing students' life satisfaction and psychological well-being on their perceived happiness levels. Method: The study, which was designed as a descriptive and cross-sectional study was carried out in Turkey with 264 students of nursing. Findings: Students' life satisfaction and happiness (r = 0.722), psychological well-being and happiness (r = 0.743), and psychological well-being and life satisfaction (r = 0.689) were found to be positively and highly correlated. Students' gender and perception of income status and general health status affected their happiness levels. It was revealed that life satisfaction and psychological well-being predict happiness (63.6%). Practice implications: The factors of life satisfaction and psychological well-being play a decisive role in the happiness of nursing students.
AtıfScopus19WoS18OpenAlex20İncele - MakaleAçık Erişim2022Scopus SJRQ1Development of generalized Fourier and Fick’s law of electro-osmotic MHD flow of sodium alginate based Casson nanofluid through inclined microchannel: exact solution and entropy generation
Khan, Dolat; Asogwa, Kanayo Kenneth; Akkurt, Nevzat; Kumam, Poom; Watthayu, Wiboonsak; Sitthithakerngkiet, Kanokwan
Electro-osmotic flow via a microchannel has numerous uses in the contemporary world, including in the biochemical and pharmaceutical industries. This research explores the electroosmotic flow of Casson-type nanofluid with Sodium Alginate nanoparticles through a vertically tilted microchannel. In addition, the transverse magnetic field is also considered. In this flowing fluid, the influence of heat and mass transmission is also explored. The aforementioned physical process is represented by partial differential equations. Utilizing suitable dimensionless variables for nondimensionalized. Furthermore, the non—dimensional classical system is fractionalized with the use of generalized Fourier and Fick's law. Generalizations are made using the Caputo derivative's description. The analytical solution of the velocity, temperature, and concentration profiles is obtained by combining the methods of Laplace and Fourier. Interestingly, the influence of several physical characteristics such as the fractional parameter, Casson fluid parameter, the thermal and mass Grashof numbers, and the zeta potential parameter is displayed. Moreover, the results show that the volume fractional of nanoparticles enhances the rate of heat transfer up to 39.90%, Skin friction up to 38.05%, and Sherwood number up to 11.11%. Also, the angle of inclination enhances the fluid velocity.
AtıfScopus25OpenAlex29İncele - MakaleAçık Erişim2022Scopus SJRQ2Homophobia levels of parents of nursing students and affecting factors
Beydağ, Kerime Derya; Alp Dal, Nursel
Purpose: The aim of this study is to determine the homophobia levels of parents of students who receive nursing education and the factors affecting their homophobia levels. Design and Methods: The study was carried out as a descriptive and cross-sectional study on the 375 parents of nursing students. Findings: There was statistically significant difference between the case when parents know that there is a homosexual individual in their immediate environment and the mean The Hudson and Ricketts Homophobia Scale (HRHS) score, as well as between the case when parents know that a friend of theirs is homosexual and the mean HRHS score (p < 0.05). Practice Implications: It should be taken into account that parents' prejudices against homosexuals may also affect the way their children view homosexuals.
AtıfScopus3WoS3OpenAlex3İncele - MakaleAçık Erişim2022Scopus SJRQ1Aroclor 1254 impairs sperm quality, fertilization ability, and embryo development of rainbow trout (Oncorhynchus mykiss)
Kocabaş, Mehmet; Kocabaş, Filiz Kutluyer; Aksu, Önder; Benzer, Fulya; Erişir, Mine; Sahilli, Yeliz Çakir
The polychlorinated biphenyls (PCBs) in aquatic environment adversely affect non-target organisms, including fish. Especially, the male reproduction and next generation can be damaged through high exposure to these pollutants. Hence, the sperm cells were exposed to sublethal concentrations of Aroclor 1254 (0, 1, 5, 10, or 25 mg/l) for 4 h. The sperm quality parameters were analyzed by SCA (Sperm Class Analyzer). The fertility, eyeing, and hatching rates were determined as gamete markers. Lipid peroxidation (malondialdehyde-MDA), glutathione (GSH), and antioxidant enzymes [superoxide dismutase (SOD), glutathione peroxidase (GPx), and catalase (CAT)] were measured for determination of oxidative stress. Our results showed that Aroclor 1254 negatively affected the motility rate and duration, fertilization rate, embryogenesis, and hatching and also triggered antioxidant defense mechanisms at the highest concentration (25 mg L−1). Furthermore, linear speed (VSL), linearity index (LIN), and amplitude lateral head (ALH) were significantly changed after exposure to 25 mg L−1, and the lowest concentrations (1 and 10 mg L−1) did not significantly affect the motility and fertilizing capacity. The embryogenesis and hatching were significantly affected by sperm exposure to 1, 10, and 25 mg L−1 of Aroclor 1254. Consequently, Aroclor 1254 causes potential hazards in male germ cells, and the exposure of sperm cells to pollutants can adversely affect next generation of wild populations.
AtıfScopus6WoS5OpenAlex4İncele - MakaleAçık Erişim2022Scopus SJRQ1Field reconnaissance and structural assessment of the October 30, 2020, Samos, Aegean Sea earthquake: an example of severe damage due to the basin effect
Onat, Onur; Yön, Burak; Öncü, Mehmet Emin; Varolgüneş, Sadık; Karaşin, Abdulhalim; Cemalgil, Selim
An earthquake with a magnitude ranging from Mw = 6.9 (KOERI) to Mw = 7.0 (USGS) struck Samos Island in the Aegean Sea on October 30, 2020, with an epicentre 70 kms from the İzmir city centre in Turkey. The earthquake took place at 14:51 local time (11:51 UTC). The peak ground acceleration (PGA) of this earthquake was recorded to be 0.179 g at the epicentre of the earthquake. This earthquake occurred at a depth of 17.26 km (AFAD (2020) İzmir Earthquake Report, (In Turkish)) and lasted 16 s. The main shock from the earthquake triggered a tsunami that hit the building stocks built near the coast. During the gradual deregulation of COVID-19 pandemic regulations, various events caused considerable damage to the building stock, particularly in the Izmir Seferihisar and Bayraklı regions and resulted in a massive disruption of daily habits. The main shock caused 117 deaths in both Turkey and Greece, and 1632 people were also injured in Turkey. Moreover, several injuries occurred in Greece. A total of 103 buildings collapsed, 700 were severely damaged, 814 buildings were moderately damaged, and 7889 were slightly damaged. The basic aim of this paper is to briefly present the past and present seismotectonic characteristics of the region, present building stock, and former structural conditions before the earthquake, assess structural performance and classify distinguished earthquake-induced failures and damage due to the basin effect.
AtıfScopus30WoS28OpenAlex29İncele - MakaleAçık Erişim2022Scopus SJRQ1Time-Dependent Flow of Water-Based CoFe2O4-Mn-ZnFe2O4 Nanoparticles over a Shrinking Sheet with Mass Transfer Effect in Porous Media
Waini, Iskandar; Khan, Umair; Zaib, Aurang; Ishak, Anuar; Pop, Ioan; Akkurt, Nevzat
The use of hybrid nanoparticles to increase heat transfer is a favorable area of research, and therefore, numerous scientists, researchers, and scholars have expressed their appreciation for and interest in this field. Determining the dynamic role of nanofluids in the cooling of microscopic electronic gadgets, such as microchips and related devices, is also one of the fundamental tasks. With such interesting and useful applications of hybrid nanofluids in mind, the main objective is to deal with the analysis of the unsteady flow towards a shrinking sheet in a water-based hybrid ferrite nanoparticle in porous media, with heat sink/source effects. Moreover, the impact of these parameters on heat and mass transfers is also reported. Numerical results are obtained using MATLAB software. Non-unique solutions are determined for a certain shrinking strength, in addition to the unsteadiness parameter. The mass transfer and friction factor increase for the first solution due to the hybrid nanoparticles, but the heat transfer rate shows the opposite effect.
AtıfScopus8OpenAlex7İncele - MakaleAçık Erişim2022Scopus SJRQ1Numerical investigation the hydrodynamic parameters of the flow in a wavy corrugated channel using different turbulence models
Akbari, Omid Ali; Haghjoo, Hossein; Abed, Azher M.; Karimi, Mahsa; Maghzian, Ali; Shabani, Gholamreza Ahmadi Sheikh; Anvari, Amirmasoud; Akkurt, Nevzat; Toghraie, Davood
In this research, turbulent flow numerical models in a wavy channel were investigated. The studied channel is simulated in two dimensions and symmetrically in the range of Reynolds numbers from Re=10,000 to 80,000. The significant cause of this research is to investigate and determine the appropriate method for estimating the behavior of turbulent flow in a wavy channel. In this research, the behavior of turbulent flow in a wavy channel will be simulated in 7 different ways, which are k-ω SST, k-ϵ RN, k-ϵ Realizable, k−ϵ Standard, k-ω Standard, Reynolds stress and Spalart-Allmaras. The findings of this research show that the impacts of the presence of flow viscosity (friction) and the presence of adverse pressure gradients are factors that strongly affect the velocity profiles in the upstream areas of the corrugated section. Among the studied models, due to better compatibility and guessing of flow and hydrodynamic properties, k-ω SST methods and Reynolds and Spalart-Allmaras stress are introduced as the best methods for such geometries. On the other hand, increasing the accuracy of other turbulence methods is related to the flow physics and geometric structure of each problem. In this research, the hydrodynamic parameters of the flow such as pressure drop, skin friction factor, and dynamic pressure drop coefficient and vortex contours, and pressure are plotted and described.
AtıfScopus7OpenAlex8İncele - MakaleAçık Erişim2022Scopus SJRQ1Cadmium exposure in population: alcoholic beverage consumption and health risk assessment
Kaplan Ince, Olcay; Ince, Muharrem; Onal, Ali
Risk assessment of cadmium (Cd) for human health play a key role because of toxic effect. Researchers are undergoing constant development for modelling approaches to make a risk assessment. It was carried out a central composite design combining with response surface modeling to optimize and modeling of Cd2+ ions in this study. Also, this study was performed to provide information about possible risk associated with alcoholic beverage consumption. Some independent process parameters including contact time and pH were chosen for optimization. Under optimal parameters, 142.9 mg g−1 was determined as Cd2+ ions removal effectiveness. Significance independent parameters and their interactions were checked using analysis of variance. These results were verified by correlation coefficients (R2 = 0.9967) of the statistical prediction. Estimated daily intake (EDI) and target hazard quotients (THQ) were calculated, to assess health risk. The Cd2+ ions EDI values (µg/day/person) were less than the recommended dietary allowance values and also, its THQ value was less than 1, also. When the obtained results compared with the levels set by regulatory authorities, the studied alcoholic beverages consumption do not pose a toxicological risk. Graphical abstract: [Figure not available: see fulltext.]
AtıfScopus3OpenAlex3İncele