Sürdürülebilir Kalkınma Amaçları

Yazarlar

  • MakaleAçık Erişim2023Scopus SJRQ2
    Strength Analysis in Bonded, Bolted and Bolted-Bonded Joints, Single Lap Joints, Metal/Composite Plates

    Sadık, Ali; Karabudak, Filiz

    Today, especially in many fields that require structural durability, such as the aerospace and automotive industries, there has been a need to use different bonding techniques separately or together in order to use materials together with different mechanical properties. In this study, stress and damage analysis of single lap joints, bonding and bolt-bonding metal/composite joints under tensile loads were performed. The nine kinds of single lap joint models in different combinations (bonded, bolted and bolt-bonded) were prepared by using acrylic adhesive (Acrytron 1E1) and 100-25-3 mm in size; AZ91/AZ91, AZ91-carbon fiber and carbon fiber-carbon fiber plates. Some comparisons were carried out by examining the stresses and deformations that occur in joint models exposed to tensile and 4-point bending tests. As a result of the tensile test, it was determined that the highest maximum tensile stress occurred in AZ91-CF bolt-bonded samples. In the four-point bending test, the maximum shear force value was determined in the CF-CF bolted-bonded samples.

    AtıfScopus10WoS9OpenAlex9
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  • MakaleAçık Erişim2023Scopus SJRQ3
    High-cycle fatigue and tensile strength of AZ91 Mg alloy with MAO-epoxy duplex coating

    Karabudak, Filiz

    In this study, an epoxy layer was formed by the immersion process, on the oxide layer grown by the micro-arc oxidation (MAO) treatment of the AZ91 magnesium alloy, using the thin film sealing technology, and its effect on fatigue and tensile stress under high cycle conditions was investigated. The microstructures of the AZ91 base material, MAO/AZ91 and MAO-epoxy/AZ91 samples, which were subjected to high-cycle fatigue tests and uniaxial static tensile tests, were assessed through the scanning electron microscope (SEM), X-ray diffraction (XRD) mechanical tests, and fatigue and tensile tests. As a result, the MAO-epoxy duplex coating, which has a homogeneous and compact structure, was observed to improve the fatigue limit value/life, yield strength, ultimate tensile strength, and percentage elongation values of the base material significantly.

    AtıfScopus2WoS2OpenAlex2
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  • MakaleAçık Erişim2023
    Assessment of photovoltaic module temperature estimation for four years with four different software; [Dört yıllık fotovoltaik modül sıcaklık tahmininin dört farklı yazılımla değerlendirilmesi]

    Tolgay, Doga; Yakut, Muhammet Samet; Ozden, Talat; Akinoglu, Bulent G.

    The software used today, on the estimation of module temperature of photovoltaic systems, seem very important to be analyzed. These estimates are crucial in future techno-economic and environmentally friendly analyses of the systems to reach better achievements for future generations. This is very important to reach lifetime analyses of long-term feasibility to find out payback time and the levelized cost of energy. The present work is based on this issue, to test the module temperature estimation formulas used by four commonly used software models, and to determine the most suitable software for temperature analyses of five different photovoltaic modules in Middle Anatolia. Outdoor truthful long-term testing is the main realistic approach to reach fundamental contemplations. After an introductory basic knowledge, the main materials and methods are discussed to enlighten the analysis. The main methodology is given and further prospects are enlightened. Four well-known software are analyzed using four years of outdoor testing of five different photovoltaic modules. Measured ambient temperature and solar irradiance are used in the categorization of the software estimation performances. PV*SOL appears to be superior at low irradiance and ambient temperature, whereas Helioscope appears to be superior overall.

    AtıfScopus2
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  • MakaleAçık Erişim2023
    THE IMPLICATIONS OF ISLAMIC LAW ON THE RIGHTS OF RELIGIOUS MINORITIES IN MUSLIM-MAJORITY COUNTRIES

    Karimullah, Suud Sarim

    This study aimed to explore the complex implications of Islamic law on the rights of religious minorities in Muslim-majority countries. Through a comprehensive literature analysis, the study summarized information from various relevant text sources. The findings show the complex challenges faced by religious minorities when exercising the rights in Muslim-majority countries. Examining the impact of Islamic law on religious minorities' rights suggests that the legislation could provide a potential basis for protection. However, the interpretation and application of the law varies between countries. Introducing Islamic law into state policies often creates tensions between religious and universal human rights principles, requiring careful efforts to strike a delicate balance. In modern contexts, such as the impact of globalization and information technology, Muslim-majority countries are faced with challenges that prompt constant adaptation to ensure the effective protection of religious minorities’ rights. Therefore, addressing these challenges requires a comprehensive method including legal reform, interreligious dialogue, and community education to ensure that the rights of religious minorities are respected and substantially protected.

    • SDG 16 · Barış, Adalet ve Güçlü Kurumlar
    AtıfScopus26OpenAlex18
    Scopusİncele
  • MakaleAçık Erişim2023Scopus SJRQ1
    Phenolic Constituents, Antioxidant and Antimicrobial Activity and Clustering Analysis of Propolis Samples Based on PCA from Different Regions of Anatolia

    Altuntaş, Ümit; Güzel, İsmail; Özçelik, Beraat

    This study aimed to evaluate the biochemical composition and biological activity of propolis samples from different regions of Türkiye to characterize and classify 24 Anatolian propolis samples according to their geographical origin. Chemometric techniques, namely, principal component analysis (PCA) and a hierarchical clustering algorithm (HCA), were applied for the first time to all data, including antioxidant capacity, individual phenolic constituents, and the antimicrobial activity of propolis to reveal the possible clustering of Anatolian propolis samples according to their geographical origin. As a result, the total phenolic content (TPC) of the propolis samples varied from 16.73 to 125.83 mg gallic acid equivalent per gram (GAE/g) sample, while the number of total flavonoids varied from 57.98 to 327.38 mg quercetin equivalent per gram (QE/g) sample. The identified constituents of propolis were phenolic/aromatic acids (chlorogenic acid, caffeic acid, p-coumaric acid, ferulic acid, and trans-cinnamic acid), phenolic aldehyde (vanillin), and flavonoids (pinocembrin, kaempferol, pinobanksin, and apigenin). This study has shown that the application of the PCA chemometric method to the biochemical composition and biological activity of propolis allows for the successful clustering of Anatolian propolis samples from different regions of Türkiye, except for samples from the Black Sea region.

    AtıfScopus47WoS44OpenAlex54
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  • MakaleAçık Erişim2023
    Investigation of the structural damage caused by blasting activities in tunnels to surrounding buildings: The case of Gümüşhane belt highway; [Tünellerde patlatma faaliyetlerinin çevre binalara verdiği yapısal hasarın incelenmesi: Gümüşhane çevre yolu örneği]

    Seferoğlu, Mehmet Tevfik; Seferoğlu, Ayşegül Güneş; Akaryali, Enver

    Tunnels are road transport structures that reduce traffic and expropriation problems, noise, and possible damage to animals and plants, and provide safer, more comfortable, and faster transportation for vehicles compared to highways. However, some environmental problems occur during tunnel construction. These problems such as vibration, noise, rock throwing, etc. caused by the blasting process used during tunnel excavation on buildings and people should be well investigated. In this study, two buildings located close to the exit and entrance of two tunnels (T2 and T3 tunnels) on the Gümüşhane belt road were chosen to investigate. Firstly, the existing damages in the first building, which is 7 m away from the T2 tunnel exit, and the second building, which is 60 m away from the T3 tunnel entrance, were analyzed by considering criteria such as the geological and ground condition of the land and the building materials used during the construction of those building. In addition, the negative effects on the buildings were evaluated by calculating the vibrations after the blasting process in the tunnel with the help of various empirical formulas. Investigation on site showed that building 1 was built of masonry and building 2 was built of reinforced concrete, and that deep cracks had formed in the bearing systems of both buildings, spills occurred in the walls, and fractures in the windows. Also, calculations with empirical formulas showed that the vibration rates caused by blasting process in the 1st and 2nd buildings were as 385.68 mm/sec and 6.91 mm/sec, respectively, and these vibration values were above the standard values. The data obtained through examination on-site and empirical approaches show that it would be dangerous for people to be resident in both buildings.

    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
    • SDG 11 · Sürdürülebilir Şehirler ve Topluluklar
    AtıfScopus3OpenAlex1TR Dizin1
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  • MakaleAçık Erişim2023
    Shear strength estimations and shear designs on RC beams with limited ductility by FL and FIL methods; [BM ve BTM yöntemleri ile sınırlı sünekliğe sahip betonarme kirişlerde kesme dayanımı tahmini ve kesme tasarımı]

    Öztekin, Ertekin

    In this study, a fuzzy logic model was constituted by using the Fuzzy Logic (FL) method, which is one of the traditional artificial intelligence (AI) methods, in order to estimate the shear strength of reinforced concrete (RC) beams with limited ductility. In this model, beam width(bw), beam height(h), characteristic concrete compressive strength(fck), transverse reinforcement diameter(ØT), the number of arms bearing the shear force of the transverse reinforcement(n) and transverse reinforcement spacing(s) were taken into account as variable parameters. The model developed by using the problem data containing the solutions of shear force strength of 2640 beams with different cross-section properties were tested with 480 beam solutions different from these data. In the tests of the developed FL model, maximum percentage error, minimum percentage error, average percentage error and correlation coefficient values were obtained as 3.604,-0.091, 1.514 and R2=0.999678. By applying the fuzzy inverse logic method (FIL), which was recently developed by the author of this study, on the FL model, which is seen to have been developed quite sensitively from the test results, a total of 521 designs were obtained for 15 different RC beams with limited ductility subjected to shear. In order to check the accuracy of these designs, after shear strengths were obtained by conventional computations for these designs, % error and correlation coefficients were computed between the obtained strength values and the shear force values taken into account for the design. The promising results show that the FIL method can be used in the design of RC beams under shear force and even in other scientific studies such as design, optimization and control.

    AtıfScopus1OpenAlex2
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  • MakaleAçık Erişim2023Scopus SJRQ1
    Leveraging blockchain in response to a pandemic through disaster risk management: an IF-MCDM framework

    Peker, Iskender; Ar, Ilker Murat; Erol, Ismail; Searcy, Cory

    The COVID-19 pandemic has underscored the necessity for strategic approaches to manage global catastrophes. This study argues that disaster risk management (DRM) is an essential approach to mitigate the impact of global calamities, such as a pandemic. However, due to the uncertainty emerging from variables such as time and demand, managing DRM effectively involves high complexity. Blockchain technology (BcT) can be implemented to help address these challenges due to its potential to build trust, transparency, and accountability in complex operations. However, no research has quantitatively examined the applicability of BcT in the sub-dimensions of DRM to address the COVID-19 pandemic. The goal and scope of this study is to explore the role of BcT in DRM operations during the COVID-19 pandemic through an Intuitionistic Fuzzy Multi-Criteria Decision Making (IF-MCDM) framework. More specifically, the Intuitionistic Fuzzy Analytic Network Process (IF-ANP) method was utilized to calculate the weights of key criteria (i.e., BcT benefits), while Intuitionistic Fuzzy VIKOR (IF-VIKOR) was used to prioritize the alternatives (i.e., the sub-dimensions of DRM). The findings of this study are threefold. First, supporting effective coordination turned out to be the most essential benefit of BcT to build resilience in response to the COVID-19 pandemic. Second, disaster management was found to be the most appropriate DRM sub-dimension for possible BcT implementation during the COVID-19 pandemic. Lastly, eleven distinct activities involved in disaster management and governance and financial protection were discovered to be the most applicable for BcT. The findings of this study could assist disaster risk managers to assess whether (or not) BcT is suitable for the sub-dimensions of DRM to build national and organizational resilience in the wake of the COVID-19 pandemic.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
    AtıfScopus27WoS22OpenAlex34
    ScopusWeb of Scienceİncele
  • MakaleAçık Erişim2023Scopus SJRQ1
    The psychological dimension of menopause: a phenomenological study: Being menopause in Turkey: a qualitative study

    Uzun, Sevda; Ozcan, Handan; Jones, Duygu

    This study aims to determine the perceptions of women in menopause living in Turkey regarding this period and associated problems, which has shown that some women are negatively affected by the menopause period and have difficulty coping with the effects of menopause. The study has a basic qualitative research design, and the sample was determined by using the criterion sampling method, one of the purposeful sampling methods. The effects and characteristics of menopause themes are included in the category of perception of menopause among women, and the themes of positive and negative perspectives are included in the category of perspective on menopause. It is reported that women experience feelings of fear, uncertainty, irritability, anxiety/worry, introversion, relaxation, and happiness during menopause. Our study has shown that some women are negatively affected by the menopause period and have difficulty coping with the effects of menopause.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    • SDG 5 · Toplumsal Cinsiyet Eşitliği
    AtıfScopus4WoS6OpenAlex6
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  • MakaleAçık Erişim2023Scopus SJRQ2
    A green and simplified approach for the quantitative and sensitive analysis of heavy metal ions in sea and stream waters

    Duran, Celal; Camoglu, Aslihan Yilmaz; Ozdes, Duygu; Bekircan, Olcay

    Elimination of the matrix effect is a major challenge in developing a method for the quantification of heavy metals (HMs) in water samples. In this regard, the current research describes the simultaneous analyses of Cu(II), Cd(II), and Ni(II) ions in water matrices through flame atomic absorption spectrophotometry (FAAS) after preconcentration with carrier element-free co-precipitation (CEFC) technique by the help of an organic co-precipitant, 3-{[5-(4-Chlorobenzyl)-3-(4-chlorophenyl)-1H-1,2,4-triazol-1-yl]-methyl}-4-[2,4-(dichlorobenzylidene)amino]-1H-1,2,4- triazole-5(4H)-thione (CCMBATT). Based on our literature research, CCMBATT was employed for the first time in this study as an organic co-precipitant for the preconcentration of HMs. Factors such as solution pH, concentration of co-precipitant, sample volume, standing time, centrifugation rate, and time were thoroughly examined and optimized to achieve the highest efficiency in terms of HM recovery. The limits of detection (LODs) (with 10 number of tests) of 0.54, 0.34, and 1.95 μg L-1 and the relative standard deviations (RSD %) of 2.1, 3.3, and 3.0 were determined for Cu(II), Cd(II) and Ni(II) ions, respectively. Recovery results of HMs for the spiked samples were in the range of 92.8-101.0%, demonstrating the trueness of the method and its applicability to the water samples matrix.

    • SDG 6 · Temiz Su ve Sanitasyon
    AtıfScopus2WoS2OpenAlex1
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  • MakaleAçık Erişim2023Scopus SJRQ1
    Performance analysis of digitally controlled nonlinear systems considering time delay issues

    Yanarateş, Cağfer; Okur, Serkan; Altan, Aytaç

    In this paper, a comprehensive investigation into discretization, effective sample time selection considering delays in the system, and time and frequency domain analysis of a DC-DC buck converter, which plays a vital role in photovoltaic (PV) systems, is conducted to enhance the understanding of their dynamic behavior, optimize control algorithms, improve system efficiency, and ensure reliable power conversion in photovoltaic applications. To effectively address the non-linear behavior and enhance digital control of a buck converter by selecting the best sample time, several approaches can be employed. These include accurate modeling and identification of non-linear elements, development of advanced control algorithms that account for non-linearities, implementation of adaptive control techniques, and utilization of feedback mechanisms to compensate for deviations from linearity. By considering and mitigating the non-linear behavior, digital control systems can achieve improved accuracy, stability, and transient behavior in regulating the buck converter's output waveforms (voltage or current). The results of the study demonstrated that the trapezoidal integration method which is also known as bilinear approximation, or Tustin's approach outperformed other commonly used discretization methods, such as first-order hold (FOH), zero-order hold (ZOH), impulse response matching (impulse invariant), and matched pole-zero (MPZ) technique, in dual-domain (both time and frequency) analysis. The key finding highlighting the superiority of the bilinear approximation was its ability to achieve the closest match in the frequency domain bridging the continuous-time and discrete systems. This finding emphasizes the significance of the bilinear approach in preserving the frequency characteristics of the original continuous-time system during discretization. By employing this method, the discrete system closely approximated the behavior of its continuous-time counterpart, ensuring accurate frequency-domain representation.

    • SDG 7 · Erişilebilir ve Temiz Enerji
    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
    AtıfScopus60WoS57OpenAlex58
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  • MakaleAçık Erişim2023
    First report of qnr and blaVIM-4-like producing clinical Alcaligenes faecalis isolated in Türkiye; [Türkiye'den izole edilen qnr ve blaVIM-4-like üreten klinik Alcaligenes faecalis’in ilk raporu]

    Akyildiz, Esma; Saral Sariyer, Ayşegül; Köse, Tuba; Arslan, Mikail; Beriş, Fatih Şaban; Özad Düzgün, Azer

    The study set out to look at the clinical strain of A. faecalis's antibiotic susceptibility pattern. Both biochemical and molecular approaches were used to identify A.faecalis. The VITEK compact system was used to analyze the strain's antibiotic susceptibility profile. The use of PCR was evaluated to determine the presence of resistance genes. It was also determined whether resistance determinants could be transferred. It was determined that A. feacalis showed resistance to imipenem, cefepime, ceftazidime, gentamicin, amikacin, netilmicin, tobramicin, ciprofloxacin, and levofloxacin. The blaVIM-4-like gene was present in this strain, according to the results of the PCR and DNA sequencing studies. In contrast to VIM-4, this blaVIM-4-like gene showed one amino acid change (Ala265Val).Filter-mating experiments showed that the blaVIM-4-like gene cannot be transferred from A. faecalis to E. coli. In this study, This research, demonstrated the presence of the blaVIM-4-like gene for the first time in A. faecalis from Turkey.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
  • MakaleAçık Erişim2023
    Effect of aging time and temperature on properties of AA7075 alloy; [Yaşlandırma süresinin ve sıcaklığının AA7075 alaşımının özelliklerine etkisi]

    Budak, Selahattin; Çolak, Harun; Yakut, Yusuf

    In this study, the effect of aging at different temperatures and times on the properties of AA7075-T6 alloy was investigated. The samples prepared for the experimental studies were subjected to the solution, quenching, and then aging heat treatment at 100 °C and 200 °C for different periods (42-66-90 hours). The properties of the experimental samples were investigated by hardness, compression test, and scanning electron microscope (SEM). As a result of the studies, it was determined that the aging heat treatment had a positive effect on the microstructure and mechanical properties of the AA7075 alloy compared to the reference sample. Especially as a result of the heat treatments at 100 °C, higher results were obtained in hardness and compression strength compared to the initial values.

    AtıfScopus1
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  • MakaleAçık Erişim2023Scopus SJRQ1
    Excited muon production in muon colliders via contact interaction

    Sahin, M.; Caliskan, A.

    In recent years, with the enlightenment of some issues encountered in muon colliders, muon colliders have become more feasible for the high-energy physics community. For this reason, we studied the single production of an excited muon in muon colliders via contact interactions. In addition, we assumed that the excited muon decayed into a photon and muon through gauge interactions. Then, signal and background analyses were performed in muon-antimuon collider options with center-of-mass energies of 6, 14, and 100 TeV. The attainable mass and compositeness scale limits were calculated for the excited muon in these collider options. Based on the calculations, it was concluded that muon-antimuon colliders would be a perfect collider option for excited muon investigations.

    AtıfScopus1WoS1OpenAlex4
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  • MakaleAçık Erişim2023Scopus SJRQ1
    Investigating the EKC hypothesis with nanotechnology, renewable energy consumption, economic growth and ecological footprint in G7 countries: panel data analyses with structural breaks

    Aydin, Mucahit; Koc, Pınar; Sahpaz, Kadriye Izgi

    This study investigates the relationship between nanotechnological innovations, renewable energy consumption, economic growth, and ecological footprint for G7 countries within the framework of the Environmental Kuznets Curve (EKC) hypothesis. The study employs panel cointegration tests with structural breaks from 1990–2018. Nanotechnology is expected to reduce environmental degradation by increasing renewable energy consumption and energy saving. In this context, nanotechnological innovations are an essential tool for sustainable development. However, the literature also emphasizes that nanoparticle emissions from nanotechnology can negatively impact human and environmental health in the long term, and these need to be analyzed. In this context, this study is the first to empirically examine the relationship between nanotechnological innovations, renewable energy consumption, economic growth, and ecological footprint within the framework of the EKC hypothesis. The outcomes affirm that all variables are integrated with the long term. The results show that the EKC hypothesis is valid only in the USA. Nanotechnological innovations have a reducing effect on environmental degradation in the USA, whereas; they have an increasing impact on environmental degradation in Italy and the United Kingdom. Renewable energy consumption enhances environmental quality in Italy, Japan, the United Kingdom, and the USA. Based on these empirical findings, the government should pioneer to development of new the lowest nanoparticle-emitting nanotechnologies. And that way, it will be possible to encourage energy savings and renewable energy consumption more safely, and the effectiveness of sustainable development policies will increase.

    • SDG 7 · Erişilebilir ve Temiz Enerji
    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
    • SDG 13 · İklim Eylemi
    AtıfScopus73WoS59OpenAlex76
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  • MakaleAçık Erişim2023Scopus SJRQ3
    Wear Resistance of Aluminum Alloy A356 After Thorough Anodic Oxidation

    Başyipit, Aziz Bariş; Azakli, Zeki; Gümrük, Recep; Bican, Osman

    The efficiency of thorough anodic oxidation of ASTM A356 aluminum alloy as an alternative to painting its surface is studied. Microstructure, phase composition, and microhardness of oxidized layers of various thicknesses (45, 65, 80 and 90 μm) are determined. Solid particle erosion tests are conducted in accordance with ASTM G76 and MIL STD 3033. It is established that with an increase in oxidized layer thickness aluminum alloy wear resistance is reduced and the surface roughness is reduced.

    AtıfWoS1
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  • MakaleAçık Erişim2023
    Investigation of geometric object and indoor mapping capacity of Apple iPhone 12 Pro LiDAR

    Günen, Mehmet Akif; Erkan, İlker; Aliyazıcıoğlu, Şener; Kumaş, Cavit

    LiDAR (light detection and ranging) sensors use laser beams to calculate distances in the surroundings. These sensors can be applied to a wide range of tasks, and they are frequently helpful in tasks like building 3D maps, navigating airplanes, robots, conducting mining operations, and automated driving. High-resolution distance measurements are taken by LiDAR sensors, but they also gather environmental data. This information aids in locating, identifying, and quantifying things and their surroundings. The iPhone 12 Pro, which Apple released in 2020, was evaluated for accuracy with various geometric shapes and its capacity to recognize indoor environments. Free of charge 3D Scanner and the Clirio Scan application were employed in this situation. However, it was found that the root mean square error and mean error in indoor mapping were ±1.41 cm and-0.56 cm in 3D Scanner and ±3.94 cm and-0.60 cm in the Clirio Scan application, respectively, despite the findings obtained showing low accuracy in scanning small geometric objects due to the scanning difficulty. Clirio does not reject the null hypothesis in the t-test that was conducted. The accuracy of the LiDAR sensor in indoor mapping has been shown to be more promising than that of small items. In order to evaluate the reliability and reusability of the indoor mapping application according to reference measurements, intraclass correlation test was performed and the results were determined to be reliable.

    AtıfScopus12OpenAlex14
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  • MakaleAçık Erişim2023Scopus SJRQ1
    Breast cancer-related apps in Google Play and App store: evaluate their functionality and quality

    Aydin, Aydanur; Gursoy, Ayla

    Aim: This study aimed to evaluate the functionality and quality of breast cancer apps that can be accessed from Turkey. Methods: In this study, a systematic search strategy was used to identify free mobile apps on breast cancer available in the App and Google Play stores. According to the study’s PRISMA flowchart, 707 apps met the inclusion criteria. The Mobile App Rating Scale (MARS) assessed the quality of the apps. Results: Mobile apps focused on the categories of communication, education, and treatment order/plan. The mean MARS quality score for all apps was 3.4, and according to the mean score of the subscales, they were categorized as functionality, aesthetics, information quality, and participation. In addition, the mean scores of the subscales were listed on MARS as functionality, aesthetics, knowledge quality, and participation. Conclusion: Nowadays, “e-health” apps are attracting attention in the treatment of health problems. While the apps in download stores appear to provide basic information about breast cancer, they offer limited and personalized problem management related to prevention, early detection, and screening. Support from healthcare professionals and further efforts can be made to develop innovative technologies and apps that include evidence-based informational content about breast cancer. Implications for Cancer Survivors: In the process of breast cancer information, survivors can be encouraged to manage this process using e-health services.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus6WoS6OpenAlex13
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  • MakaleAçık Erişim2023Scopus SJRQ4
    Evaluation of stability in rock-fill dams by numerical analysis methods: a case study (Gümüşhane-Midi Dam, Türkiye)

    Sari, Mahmut

    Serious stability issues could arise both during and after construction if the dams’ body designs are not realistically accurate. Engineering studies are therefore crucial for identifying the body’s instability prop-erties in designing the dam body. In this study, horizontal and vertical displacement and stress-deformation analyses were carried out on the body of the Midi Waste Dam located in Karamustafa Village of Gümüşhane Province. In these analyses, the elasticity modulus and Poisson’s ratio of the soil were determined using the seismic method, which is one of the commonly used geophysical methods. The cohesion and internal friction angle of the rock fill were determined by taking into account Leps’ charts. The state of the dam body under the influence of the siltation load and seismic load at the end of operation was shown by applying the finite element method. It was found that there was no instability issue with the researched dam because the safety numbers obtained from the stability study of the dam body were greater than the 1.2 safety number accepted for the stability of the dams (SRF: 2.03, SRF: 1.37). The maximum vertical displacement of the dam body at the foundation base was found as 3.78 cm, the horizontal displacement as 5.80 cm, and the total displacement amount as 6.75 cm when the dam body was examined in terms of displacements. In terms of the statics of the dam body, the vertical, horizontal, and total displacements estimated with the numerical analysis methods did not present a problem, and it was demonstrated that this scenario was also supported by the stability of the body in the applied analyses.

    AtıfScopus7WoS7
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  • MakaleAçık Erişim2023Scopus SJRQ1
    Determination of Elemental Contents and Microbiological and Chemical Properties of Çökelek Cheeses Consumed in Turkey

    Kalaycı, Nagihan; Ürkek, Bayram; Öztürk, Feyza; Şengül, Mustafa; Çiftçi, Esengül

    The Çökelek samples what 30 different were collected from randomly local bazaars to investigate heavy metal contaminant and mineral levels and some physicochemical and microbiological properties of samples. While the Pb was identified in 6 of the 30 samples, the As was only found in 4 of the samples. The mean major and trace element contents of Çökelek samples were ordered as Na > P > Ca > K > Mg and Al > Zn > Ni > Cu, respectively. The physicochemical properties indicated a high deviation among samples. The mean total solids, ash, salt, fat, protein waters soluble nitrogen contents, and sample ripening index were 29.83%, 1.88%, 0.68%, 4.31%, 19.84%, 0.33%, and 1.79%, respectively. The mean total aerobic mesophilic bacteria (TAMB) count of Çökelek samples was found as 8.26 log CFU g−1. The coliform bacteria and yeast-mold counts were detected in 11 and 27 of 30 samples, respectively. The mean coliform and yeast-mold counts were 1.82 log CFU g−1 and 7.11 log CFU g−1, respectively. Traditional cheeses are not mentioned in legal laws such as the Turkish Food Codex. So, there is no legal limit and standard production processes. This situation is a problem in terms of traditional cheese quality. For this reason, traditional cheese should perform further studied, and determine the legal limits.

    • SDG 2 · Açlığa Son
    AtıfScopus4WoS4OpenAlex9
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