Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Gul, Muhammet(86)
- Güler, Ömer(69)
- Akkurt, Nevzat(68)
- Baskonus, Haci Mehmet(53)
- Tekin, H.O.(52)
- Bulut, Hasan(50)
- ALMisned, Ghada(49)
- Serdar, Osman(43)
- Yucesan, Melih(43)
- Paksoy, Mehmet Yavuz(42)
- Yildirim, Numan(41)
- Zengin, Gokhan(40)
- Yildirim, Nuran Cikcikoglu(39)
- Ince, Muharrem(37)
- Kocabaş, Mehmet(37)
- Celik, Erkan(35)
- Benzer, Fulya(33)
- Sulaiman, Tukur Abdulkadir(29)
- Aslan, Naim(27)
- Can, Erkan(27)
- Kutlu, Banu(27)
- Kök, Mediha(27)
- Tanyol, Mehtap(27)
- Danabas, Durali(26)
- Kutluyer, Filiz(26)
- Özkul, İskender(26)
- Ates, Mehmet(25)
- Yildirim, Ozal(25)
- Onat, Onur(23)
- Topal, Murat(23)
- Demir, Veysel(22)
- Erten, Fusun(22)
- Guler, Omer(22)
- Say, Yakup(22)
- Yaman, Mehmet(22)
- Alataş, Mevlüt(21)
- Güler, Seval Hale(21)
- Çimen, Okay(21)
- Baykal, Duygu Sen(20)
- Mete, Suleyman(20)
Yayınlar
- MakaleYalnız künye2023Scopus SJRQ1Understanding Suicides through the Processes of Bereaved Relatives: A Phenomenological Study : Understanding Suicides
Karatay, Gülnaz; Gürarslan Baş, Nazan
This phenomenological study aimed to deeply understand the perceptions, experiences, and coping mechanisms of families who have experienced completed suicide in the pre- and post-suicide periods. In this scope, in-depth interviews were conducted with a family member who had experienced completed suicide. Colaizzi’s analysis method was used for data analysis. The main theme of the pre-suicide process included sub-themes of traumatic experiences, unmanageable genetic inheritance, and alcoholism; the main theme of the approaching period included sub-themes of clear signals and accelerators; the main theme of the post-suicide process included sub-themes of difficulty in creating meaning, stigma and guilt, and unmet support needs; the main theme of perceptions of preventability included the sub-theme not everyone who is sick has to die and ultimately.
AtıfScopus1WoS1OpenAlex1
İncele - MakaleAçık Erişim2023Scopus SJRQ3Investigation of issues affecting thermal comfort in water system underfloor heating applications of buildings with Bayesian networks
Erkol, Samet; Yücesan, Melih; Gül, Muhammet; Güneri, Ali Fuat
Thermal comfort is related to the stability of the ambient temperature. Constant changes in ambient temperature appear as a situation that negatively affects comfort. The selected building systems must be arranged to maintain this stability for the continuity of thermal comfort. In this study, issues affecting thermal comfort in water system underfloor heating applications of buildings are handled and analyzed using the Bayesian Network modeling methodology. Visual examples of the problems encountered in field applications are also given. Three different scenarios are tested with the constructed Bayesian Network model. In the first scenario, assumed that mechanical project failures were prevented. In this case, it was observed that the failure rate decreased by about 5%. In the second scenario, assumed that mechanical application failures are prevented along with mechanical project failures. The failure rate decreased by 11% compared to the first situation. The third scenario assumed that the mechanical project preparation phase was concluded without any problems, the mechanical project was implemented without any failures, and the mechanical system was commissioned without any problems. In the last scenario, the failure rate decreased by 14% compared to the first case, and the probability of not providing thermal comfort remained at 2%. As a result of these three scenarios, the possibility of not providing thermal comfort in the underfloor heating system is detailed and interpreted.
- MakaleAçık Erişim2023Scopus SJRQ1COVID-19 safe campus evaluation for universities by a hybrid interval type-2 fuzzy decision-making model
Baskak, Dilber; Ozbey, Sumeyye; Yucesan, Melih; Gul, Muhammet
The fight against the COVID-19 pandemic, which has affected the whole world in recent years and has had devastating effects on all segments of society, has been one of the most important priorities. The Turkish Standards Institution has determined a checklist to contribute to developing safe and clean environments in higher education institutions in Turkey and to follow-up on infection control measures. However, this study is only a checklist that makes it necessary for decision-makers to make a subjective evaluation during the evaluation process, while the need to develop a more effective, systematic framework that takes into account the importance levels of multiple criteria has emerged. Therefore, this study applies the best-worst method under interval type-2 fuzzy set concept (IT2F-BWM) to determine the importance levels of criteria affecting the “COVID-19 safe campus” evaluation of universities in the context of global pandemic. A three-level hierarchy consisting of three main criteria, 11 sub-criteria, and 58 sub-criteria has been created for this aim. Considering the hierarchy, the most important sub-criterion was determined as periodic disinfection. The high contribution of the interval-valued type-2 fuzzy sets in expressing the uncertainty in the decision-makers’ evaluations and the fact that BWM provides criterion weights with a mathematical optimization model that produces less pairwise comparisons and higher consistency are the main factors in choosing this approach. Simple additive weighting (SAW) has also been injected into the IT2F-BWM to determine the safety level of any university campus regarding COVID-19. Thus, decision-makers will be better prepared for the devastating effects of the pandemic by first improving the factors that are relatively important in the fight against the pandemic. In addition, a threshold value will be determined by considering all criteria, and it will prepare the ground for a road map for campuses. A case study is employed to apply the proposed model, and a comparison study is also presented with the Bayesian BWM to validate the results of the criteria weights.
AtıfScopus4WoS3OpenAlex2
İncele - MakaleAçık Erişim2023Scopus SJRQ3The epiphytic bryophyte succession of Buxus sempervirens forests in the Fırtına Valley, Rize (North Türkiye)
Ezer, Tülay; Alataş, Mevlüt; Batan, Nevzat; Erata, Hüseyin
In this study, the epiphytic bryophyte succession of the Buxus sempervirens L. forests in Fırtına Valley (Çamlıhemşin-Rize, North Türkiye), one of the nine biodiversity hotspots in Türkiye, was investigated. For this pur-pose, a total of 60 sampling plots were taken from the live trunks of B. sempervirens trees of different ages. Twenty-nine epiphytic bryophyte species were determined (24 mosses and 5 liverworts) within the sample plots. Also, six different life form types and four different habitat affinity categories were determined. Among them, the mat type life form is in first place with 34.4% and the cortico-saxicolous species are the most common with 51.7%. Two-way indicator species analysis (TWINSPAN) classified the epiphytic bryophyte communities on B. sempervirens trunks at the second level into two main clusters (A and B) and three sub-clusters (A1, B1 and, B2). Detrended correspondence analysis (DCA) axis 1 was interpreted as gradient along the height of the epiphytic habitat (from the lower base to the upper zone) on trunks and the DCA axis 2 was interpreted as gradient of moisture (from mesic to xeric). Exsertotheca crispa (Hedw.) S. Olsson, Enroth & D. Quandt was the species with the highest index of ecological significance (IES) value on the lower bases of the aged trees. Species diversity and epiphytic cover in the upper zones were lower than in the basal and middle zones in the study area. While Metzgeria furcata, (L.) Corda, Oxyrrhynchium hians (Hedw.) Loeske, Plagiothecium nemorale (Mitt.) A.Jaeger, and Radula lindenbergiana Gottsche ex C.Hartm were only found on old trees, Ctenidium molluscum (Hedw.) Mitt. and Pseudoleskeella nervosa (Brid.) Nyholm were only found on middle-aged trees.
AtıfScopus1OpenAlex1İncele - MakaleYalnız künye2023Scopus SJRQ4The Effect of the Health Literacy Levels of Teachers on Their Vaccine Hesitancy: The Example of Turkey
Yeşiltepe, Akgün; Çal, Ayşe
Teachers assume important responsibilities in improving the health literacy levels of the society. Health literacy and vaccination are important prerequisites for health protection and promotion. This study aimed to investigate the effect of teachers’ health literacy levels on their vaccine hesitancy. This is a descriptive cross-sectional study. The health literacy and vaccine hesitancy levels of the teachers were found to be moderate. A negative and weak significant relationship was observed between health literacy and vaccine hesitancy, indicating that as health literacy increases, vaccine hesitancy may decrease. In addition, it was revealed that general health perception and over-the-counter drug use are associated with health literacy, and age, income status, and place of residence are associated with vaccine hesitancy. The health literacy and vaccine hesitancy levels of teachers should be improved. As health literacy increases, vaccine hesitancy decreases, which is an important finding in terms of increasing the effectiveness of vaccination programs.
AtıfScopus3WoS3OpenAlex3İncele - MakaleAçık Erişim2023Scopus SJRQ3The effect of crest shape on discharge coefficient at linear weirs; [Utjecaj oblika krune na koeficijent prelijevanja linearnih preljeva]
Dogan, Yusuf; Kaya, Nihat
A detailed experimental laboratory analysis of the effect of crest shape on the discharge coefficient of sharp-crested weirs is presented in the paper. The experiments were conducted for four different crest shapes. The experiments and analyses show that discharge capacity, and discharge coefficient in particular, are significantly affected by weir crest height. It is stated in conclusion that rounded crest shape has the highest discharge capacity. In practice, sharp crested weirs are generally preferred to other crest shapes due to construction facility, although the discharge coefficient values of sharp crested weirs are lower compared to rounded crest shape.
- MakaleAçık Erişim2023Scopus SJRQ1Mixed formulation for an easy and robust numerical computation of sorptivity
Lassabatere, Laurent; Peyneau, Pierre-Emmanuel; Yilmaz, Deniz; Pollacco, Joseph; Fernández-Gálvez, Jesús; Latorre, Borja; Moret-Fernández, David; Di Prima, Simone; Rahmati, Mehdi; Stewart, Ryan D.
Sorptivity is one of the most important parameters for the quantification of water infiltration into soils. proposed a specific formulation to derive sorptivity as a function of the soil water retention and hydraulic conductivity functions, as well as initial and final soil water contents. However, this formulation requires the integration of a function involving hydraulic diffusivity, which may be undefined or present numerical difficulties that cause numerical misestimations. In this study, we propose a mixed formulation that scales sorptivity and splits the integrals into two parts: the first term involves the scaled degree of saturation, while the second involves the scaled water pressure head. The new mixed formulation is shown to be robust and well-suited to any type of hydraulic function - even with infinite hydraulic diffusivity or positive air-entry water pressure heads - and any boundary condition, including infinite initial water pressure head, h→-∞. Lastly, we show the benefits of using the proposed formulation for modeling water into soil with analytical models that use sorptivity. Copyright:
AtıfScopus11OpenAlex14İncele - MakaleYalnız künye2023Scopus SJRQ3Uncovering the gap between intention and behaviour towards knowledge sharing: Evidence from a hybrid healthcare institution
Uyan, Umut; Şanal, Musa
This study set out to test an integrative model towards knowledge sharing (KS) practices in health institutions, which have recently been referred to as knowledge-intensive organisations. The model assesses the relative contributions of various organisational and relational factors in explaining knowledge sharing intention (KSI), as well as the moderating effects of both socio-cognitive factors and the nature of knowledge to be shared on the relationship between KSI and knowledge sharing behaviour (KSB). The data utilised in the research were obtained from a health institution designed as a public-private partnership through the survey questionnaires. Findings suggest that highly formalised and hierarchical organisational structures negatively affect KSI, whereas constructive communication climate and organisational integration enhance it. The relationship between facilitating tools and technologies, which is the last of the organisational factors examined, and KSI was non-significant. Two out of the three relational factors, trust and affiliation, positively predicted KSI, but no statistically significant relationship was found between normative beliefs and KSI. Finally, the results suggest that the perceived reciprocity eases the translation of the intention towards KS into actual sharing behaviour, whereas the perceived power loss weakens the mentioned relationship.
AtıfScopus5WoS5OpenAlex4İncele - MakaleYalnız künye2023Scopus SJRQ4Development of a best-worst method based MCDM approach for solar power plant location selection: an application to Tunceli, Turkey
Aykac, Yunus Emre; Yucesan, Melih; Gul, Muhammet
Solar energy stands out with its increasing potential in the world. The decision to choose the location of a solar power plant is very important due to the investment return. In this study, a solar power plant site selection for Tunceli, Turkey is studied with a two-stage multi-criteria decision-making approach. In the first stage, the importance levels of the determined nine factors are obtained by the best-worst method (BWM). In the second stage, the most appropriate site is selected among the eight districts of Tunceli. As a result of the first stage, solar and fault line emerged as the most and least important factor, respectively. The second stage showed that Pertek district is the most suitable place. A comparative framework has been created including five different MCDM methods, which strengthens the final decision's accuracy and reveals whether each method's results are correlated.
AtıfScopus5OpenAlex3İncele - MakaleAçık Erişim2023Scopus SJRQ4Using the Taguchi Method to Optimize the Compressive Strength of Concrete in Different Aggregates Typology; [Farklı Tipolojideki Doğal Agregalı Betonların Basınç Dayanımını Optimize Etmede Taguchi Metodunun Kullanımı]
Gönen, Tahir; Cemalgil, Selim
Concrete quality is affected by many factors such as mixing ratios, material quality, transporting, placing and curing. One of the crucial factors that changes the compressive strength of concrete is aggregate which makes up 75% of concrete during concrete production. Properties of aggregate are more unstable than other materials depending on various reasons. Granulometry, moisture or organic substance amount of the aggregates which have same origin may differ within time. This study investigates physical and mechanical properties of crushed limestone and crushed river aggregates. It is on optimum design of concrete with crushed limestone and crushed river aggregates. At first, physical and mechanical properties of the aggregates are measured, then Taguchi method is applied. Test variables are water-to-binder ratio, cement dosage, river sand ratio to limestone and air entrained agent. L16 orthogonal array as an experimental design method is applied to determine the optimum concrete design in terms of compressive strength and flexural strength. Furthermore, contribution of variables on compressive and flexure strength is determined statically by using ANOVA method. Among the 4 different aggregate ratios evaluated in the study, the best performance is from the combination of 70% stream and 30% limestone. The weakest performance is from the series that do not contain any stream material.
AtıfScopus2İncele - MakaleAçık Erişim2023Scopus SJRQ4Physicochemical and Phytochemical Properties of Different Extracts of Sumac Plant (Rhus coriaria L.) Grown in Tunceli, Türkiye; [Tunceli'de Yetişen Sumak Bitkisinin (Rhus coriaria L.) Farklı Ekstraktlarının Fizikokimyasal ve Fitokimyasal Özellikleri]
Yuksel, Esra; Ince, Olcay Kaplan
In this study, sumac plant (Rhus coriaria L.) naturally grown in Tunceli (Türkiye) was collected from 5 different provinces and investigated for their phytochemical properties. In sumac samples, pH, color, ash amount, total phenolic content (TPC), 2, 2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging capacity, metal chelating capacity, copper (II) ion reducing antioxidant capacity (CUPRAC), reducing power, mineral matter content, organic acids as tartaric acid, malic acid and citric acid, phenolic compounds as gallic acid, vanillic acid, caffeic acid, routine, resveratrol, (-)- epicatechin, and (+)- catechin hydrate contents were determined. The highest TPC was found in the acidified methanol extract (AME) and the DPPH free radical scavenging capacity was found in the acidified acetonitrile extract (AAE). It was determined that all extracts of sumac sample 5 (S5) collected from Pertek district, metal chelating capacity was higher than the other samples but lower than the metal chelating capacity of ethylene diamine tetra acetic acid (EDTA). CUPRAC was detected at the highest concentration of 118.0±3.0 mg caffeic acid equivalent kg-1 (mg CAE kg-1) in the AME, at the lowest 10.2±0.6 mg CAE kg-1 in the AAE for S5 sample. It was found that the reducing powers of all samples were found to be lower than the reducing power of synthetic antioxidants (butylhydroxytoluene (BHT), α tocopherol, and vitamin C), and the samples were rich in mineral substances, the predominant organic acid was malic acid, and phenolic compound was gallic acid.
AtıfScopus2OpenAlex2İncele - MakaleYalnız künye2023Scopus SJRQ2Anti-tank impact absorption with a reinforced concrete plate design
Polat, Berivan Yilmazer; Savaş, Sedat; Polat, Alper
Anti-tank weapons are among the infantry weapons used by the armies of many countries. Anti-tank rockets and explosives such as TNT, generally used for armour piercing, are also frequently used in terrorist attacks. These attacks damage the protection facilities built from reinforced concrete. Rockets or similar explosives’ rapid speed and burst temperatures pierce reinforced concrete during strikes, resulting in casualties and damage to crucial strategic structures. This study aimed to devise an economic and applicable reinforced concrete plate that could absorb the impact of anti-tank rockets and Trinitrotoluene (TNT) type explosives. Therefore, 5 different samples, produced from C50 reinforced concrete and 150×150 cm in size, were formed by combining plates of different numbers and thicknesses. Also, a sample, which was a single thick plate, was prepared. In destructive testing, Rocket Propelled Grenade (RPG-7) was used as the anti-tank rocket launcher. As a result of this study, the impact damage was reduced with hollow concrete plate geometries, and recommendations were developed for complete prevention.
AtıfScopus2WoS3İncele - MakaleYalnız künye2023Scopus SJRQ2The effect of occupational training provided to workers in a glass factory on their use of ear protectors
Yeşiltepe, Akgün; Karadağ, Gülendam
Objectives. This study aimed to determine the effect of occupational training applied to workers working in noisy parts of a glass factory on the use of ear protectors. Methods. The study was a semi-experimental pre-test and post-test design. It was carried out with 45 workers determined by purposeful sampling and working in a glass production factory who accepted to participate in the study. The data were collected with an information form and noise-related symptom chart, hearing health information questionnaire and observation. In the analysis of the study data, the number/percentage, χ 2 test, Cohen κ test and analysis of variance were used. Results. It was determined that workers pre training did not use ear protectors (100%) and there were some noise-related health complaints. There was an increase in using ear protectors (57.8%) and a decrease in their health complaints post training. It was also found that the workers’ pre-training hearing health information questionnaire mean score was 11.46 ± 3.20, and post training was 13.77 ± 3.42 in the first month and 15.77 ± 2.88 in the fourth month. Conclusions. Occupational training provided to the workers increased the workers’ awareness level and their rate of wearing ear protectors, and health problems caused by work-related noise started to recover.
AtıfScopus1WoS1OpenAlex2İncele - MakaleYalnız künye2023Scopus SJRQ4Bibliometric mapping of research trends in education, physical education, and sports for the disabled
Karakaya, Yunus E.; Dikmen, Melih; Şahin, Aykut
In this study, a relational systematic map of research trends in education, physical education, and sports for disabled people was prepared with the bibliometric mapping method. Scientific data obtained from the Web of Science (WoS) was used in the research. After the search in the WoS database, 423 studies were accessed, and 415 of these were included in the final analysis by applying the exclusion criteria. The VOSviewer (Visualization of Similarities) program was used for the bibliometric analysis. The results of the research demonstrate that the number of studies in the field has increased from the 1980s to the present day. The studies included in the research were published in 50 different countries, in 133 different journals and were carried out by 770 authors working in 409 different universities/institutions. According to the findings, most of the research, the highest number of citations, and the most influential authors were based in the United States of America. The results showed that the most cited author in this field works collaboratively with many national and international researchers. The results of the research may provide practical information for politicians, practitioners, and lecturers to draw their attention to new research trends and opportunities regarding education, physical education and sports for individuals with disabilities.
AtıfScopus1WoS1İncele - MakaleYalnız künye2023Scopus SJRQ1Improving dielectric properties, electrical conductivity, and thermal properties of biodegradable polymer composites prepared with lanthanum
Torgut, Gulben; Ayhan, Nagihan Karaaslan; Acikses, Aslisah
The precipitation method was adapted to synthesize the poly(ε-caprolactone-copolymer- ethylene oxide) (ε-CL-co-EO) composite with the salt of lanthanum (La), a rare earth element. This salt was incorporated into the polymer of different weight percentages to study how it affects the thermal and dielectric properties of the polymer. The resulting products were characterized by Fourier Transform Infrared Spectroscopy, X-ray diffractometry (XRD), Scanning electron microscopy (SEM) and thermogravimetric analysis. XRD and SEM data show that the polymer mixes homogeneously with the metal salt. Thermal degradation data show that the thermal stability of composites synthesized with La is lower than that of pure polymer. The dielectric properties and A.C conductivity measurements of the composites were investigated by using impedance analyzer in the frequency range (100 Hz to 20 kHz) at room temperature. The electrical property results of (ε-CL-co-EO)/La composites displayed that dielectric constant (έ), dielectric loss (ε"), tan delta (tan δ) and A.C electrical conductivity (σac) increase with increasing La content. The largest conductivity of (ε-CL-co-EO)/La composite filled with 20 wt% La was 8.80 × 10−8 S/cm, which was 162% times pure (ε-CL-co-EO). In addition, impedance (IZI) of composites was evaluated from the dielectric data. This procedure is eco-friendly and easy to handle, which provides a promising route to polymer composites in the application of the conductivity field.
AtıfScopus6WoS6OpenAlex7İncele - MakaleYalnız künye2023Scopus SJRQ3Nafion–Titanium (IV) Oxide-Graphene Modified Glassy Carbon Electrode (GCE) Based Electrochemical Sensor for the Voltammetric Determination of the β-blocker Bisoprolol Fumarate
Koçak, Berna; İpek, Yeliz
A Nafion–titanium (IV) oxide-graphene modified glassy carbon electrode (n-TiO2-GR/GCE) was used for the electrochemical determination of bisoprolol fumarate (BF). The modified electrode was prepared by depositing Nafion–titanium (IV) oxide-graphene onto the glassy carbon electrode by simple drop-casting. Differential pulse voltammetry (DPV) and square wave voltammetry (SWV) were used in the electrochemical determination of bisoprolol fumarate. The linear working range of bisoprolol fumarate for n-TiO2-GR/GCE DPV was from 3.0 × 10−7 to 5.0 × 10−6mol L−1 and the detection limit was 1.01 × 10−7mol L−1. In addition, with this developed method, the determination of bisoprolol fumarate in tablets was successfully performed with a recovery of 98.65%.
AtıfScopus3WoS2OpenAlex3İncele - MakaleAçık Erişim2023Scopus SJRQ2B2O3 reinforced polylactic acid/thermoplastic polyethylene glycol shape memory composites
Pekdemir, Mustafa Ersin; Kök, Mediha; Kanca, Muhammed Sait; Özen Öner, Ecem; Pekdemir, Sibel; Inci, Şule; Kirbağ, Sevda; Tatar, Beyhan
Recently, there has been a great demand for boron-containing compounds (BCCs) with unique biological properties. The demand for the use of these compounds not alone but as additives in composite materials is increasing day by day. In this study, the effect of adding B2O3 compound to the blend of PLA and PEG polymers, which is an important biocompatible shape memory polymer, was investigated. In order to examine the effect of increasing B2O3 additive on the thermal properties of PLA-PEG blend, it was determined by using a Differential Scanning Calorimetry (DSC) and thermogravimetric analyzer (TGA), and it was seen that while the melting temperature of PEG decreased, the melting temperature of PLA increased. In addition, when the thermal stability of the composites was examined, increasing of thermal stability was observed with the addition of B2O3 and a three-step degradation occurred. It was determined that the B2O3/PLA-PEG composite was homogeneous by taking X-ray measurements and SEM measurements. The antimicrobial property of the PLA-PEG blend improved with the increasing B2O3 contribution were observed from the antimicrobial activity measurements of the composite against 4 different bacteria. However, it was determined that the PLA-PEG blend preserved its shape memory effect with increasing diboron trioxide contribution.
AtıfScopus13OpenAlex16İncele - MakaleAçık Erişim2023Scopus SJRQ3Aerodynamic Drag Improvements on a Simplified Heavy Vehicle using Three-sided Plain and Notched Base Flaps
Fırat, E.
An experimental investigation has been undertaken to determine the effects of plain and notched base flaps on the drag performance of simplified tractor-trailer combination without any intermediate gap, Generalized European Transport System (GETS). Both plain and notched base flaps are rigid, made up of three identical flaps whose length is equal to the width of the GETS model, and not angled inward or outward. The experiments examined three-sided flap configurations corresponding to various combinations of seven heights of the plain part (from 10 to 40 mm in steps of 5 mm), four notch amplitudes (from 2.5 to 10 mm in steps of 2.5 mm), and five notch wavelengths (from 10 to 50 mm in steps of 10 mm). It is shown that the drag performance of the plain flap at zero yaw highly depends on the height of the plain flap. The maximum drag reduction occurs for e/w=0.1 yielding a drag reduction of 1.9% when compared to the GETS model without flap (baseline GETS). It was shown that the time-averaged drag coefficient increased slightly until a maximum was reached at e/w=0.3 but then decreased slightly with increasing e/w. Under zero yaw angle conditions, GETS model with a notched base flap, e10-a05.0-λ20, gives the lowest drag. The addition of this base flap to the GETS model resulted in a 2.8% drag reduction. This notched base flap was shown to be more effective not only at reducing <CD> under yawed flow conditions tested but also at reducing time-averaged side coefficient under yawed flow conditions tested, compared to the e10-a00.0-λ00 flap
AtıfScopus8WoS6OpenAlex4İncele - MakaleYalnız künye2023Scopus SJRQ3Investigating the selfitis behaviors and self-esteem of nursing and medical technology students
Aslan, Sinan; Yeşiltepe, Akgün; Bülbüloğlu, Semra
Introduction: In this study, we aimed to investigate the selfitis behaviors and self-esteem of nursing and medical technology students. Material and Methods: This descriptive and cross-sectional study was conducted with the participation of 612 students studying in the departments of nursing and medical technology at a university in eastern Turkey. The non-parametric Mann-Whitney U test and Kruskal Wallis test were carried out. Results: The participants were between the ages of 18 and 24. Most of the participants in both department groups were women. More than 90% of the participants in both groups were using social media. It was determined that they used WhatsApp, Instagram, and Twitter most, and they took selfies for sharing these selfies with their friends on social media. A statistically significant negative correlation was found between the selfitis behaviors of the participants and their self-esteem levels. Conclusion: The nursing and medical technology students who participated in this study had moderate levels of selfitis behaviors and self-esteem, and there was a negative relationship between these two variables. To facilitate the socializing of students in real life, we recommend that their family and close circle support be increased. We recommend raising awareness on print and visual media regarding problematic social media usage behaviors.
AtıfOpenAlex2İncele - MakaleAçık Erişim2023Scopus SJRQ2Synthesis, structural characterizations and in vitro cytotoxic activities of new sulfonamide-based Schiff base derivatives
Şahal, Hakan; Öz, Samet; Tekin, Suat; Canpolat, Erdal
Synthesis of five different new compounds (1-5) were carried out. Their structures were characterized by spectroscopic methods such as Fourier transform infrared, Proton nuclear magnetic resonance, Carbon-13 nuclear magnetic resonance and Elemental analysis. Cytotoxic activities of five new sulfonamide based-Schiff base compounds were determined by MTT assay using A-2780 (human ovarian cancer) and MCF-7 (breast cancer) cell lines. LogIC50 values of the sulfonamide derivates compounds were calculated by Graphpad Prism 12 programme after a 24-hour treatment for A2780 and MCF-7 cells. Comet assay experiments were performed to determine DNA damage using LogIC50 concentrations of all compounds in A2780 and MCF-7 cells. All compounds significantly reduced A2780 and MCF-7 cell viability compared to control groups (p < 0.05). In addition, all compounds caused DNA damage in A2780 and MCF-7 cells (p < 0.05). These results show that the synthesized compounds exhibit cytotoxic effects against cancer cells and that the cause of cell death is due to DNA damage. Communicated by Ramaswamy H. Sarma.
AtıfScopus5WoS5OpenAlex5İncele
