Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Kulakaç, Nurşen(10)
- Çelik, Orkun(8)
- Ashyralyyev, Charyyar(7)
- Keyifli, Nazlı(7)
- Ashyralyev, A.(6)
- Kayikcioglu, Temel(6)
- Menevseoglu, Ahmed(6)
- Araz, Onur(5)
- Ashyralyyev, C.(5)
- Demirbağ, Orkun(5)
- Koç, Pinar(5)
- Turan, Ibrahim(5)
- Ünlü, Ramazan(5)
- Ürkek, Bayram(5)
- Akar, Zeynep(4)
- Akyol, Hikmet(4)
- Akyol, Mehmet(4)
- Aydınçakır, Emre(4)
- Bilgilioglu, Burhan Baha(4)
- Demir Doğan, Melike(4)
- Demir, Selim(4)
- Kankal, Murat(4)
- Kurnaz, Muammer(4)
- Melek, Mesut(4)
- Pala, Fahrettin(4)
- Sancar Özkök, Canan(4)
- Taş, Ahmet(4)
- Ulutaşdemir, Nilgün(4)
- Uzun, Sevda(4)
- Acet, Tuba(3)
- Akay, K.U.(3)
- Aydin Sayilan, Aylin(3)
- Aydın Sayılan, Aylin(3)
- Barut, Abdulkadir(3)
- Basoglu, Mustafa Engin(3)
- Cakalli, H.(3)
- Canak, I.(3)
- Cengiz, Ekrem(3)
- Cengiz, Emre(3)
- Cengiz, Sevil(3)
Yayınlar
- MakaleYalnız künye2021Bireysel Yatırım Kararlarında Davranışsal Eğilimlerin Ölçülmesi: Gümüşhane İlinde Bir Araştırma
Çam, Alper Veli; Hırka, Emre
Geleneksel finans modelleri, bireysel yatırımcıların yatırım kararlarını verirken rasyonel olduklarını, yüksek getiriyi hedeflediklerini, piyasaların etkin olduğunu, tüm yatırımcıların aynı beklentilere sahip olduğunu ve menkul kıymet fiyatlarının tesadüfi oluştuğunu varsaymaktadır. Ancak, bu ve benzeri teoriler piyasada meydana gelen birçok olayı açıklamakta yetersiz kaldığı yönünde eleştirilmiştir. Bu durum davranışsal finans denilen yeni bir yaklaşımın ortaya çıkmasına neden olmuştur. Davranışsal finans teorisi, duyguların bireylerin davranışlarını etkilediğini ve bu nedenle bireylerin rasyonel karar veremediğini varsaymaktadır. Literatürde, davranışsal finans konusunun çoğunlukla bireysel menkul kıymet yatırımcıları üzerinde durduğu gözlemlenmiştir. Altın yatırımcıları finansal piyasaların önemli oyuncularından biridir. Yapılan literatür taramasında finansal piyasaların önemli oyuncularından olan altın yatırımcıları ile ilgili davranışsal finans çalışmalarına çok nadir rastlanmıştır. Bu doğrultuda çalışma, altın yatırımcılarının davranışlarını araştırmak amacıyla hazırlanmıştır. Çalışma kapsamına Gümüşhane’de yaşayan ve altın yatırımda bulunan bireysel altın yatırımcıları alınmıştır. Çalışmada, altın yatırımcılarına yönelik anket uygulanmıştır. Uygulamada 405 yatırımcının verileri SPSS 24 programında analiz edilmiştir. Analiz yöntemleri olarak frekans analizi, geçerlilik analizi ve varyans analizi kullanılmıştır. Çalışma sonucunda test edilen tüm hipotezler kabul edilmiştir.
AtıfTR Dizin2
İncele - MakaleYalnız künye2021Akademisyenlerin Kariyer Memnuniyeti Düzeylerine, Çalışma Ortamı Memnuniyeti ve Organizasyona Güven Değişkenlerinin Etkisi: Kişisel Gelişim Düzeyinin Aracı Rolü
Durmuş, İbrahim; Akyüz, Ahmet Mutlu
Bu araştırmada akademisyenlerin kariyer memnuniyeti düzeyine etki edebilecek faktörlerin belirlenmesi amaçlanmaktadır. Araştırmada alanyazında eksikliği hissedilen "çalışma ortamından memnuniyet", "organizasyona güven" ve "kişisel gelişim" değişkenlerinin, akademisyenlerin kariyer memnuniyet düzeyleri üzerindeki doğrudan ve dolaylı etkilerine odaklanılmıştır. Araştırmaya ilişkin veriler dört devlet üniversitesinden toplam 587 akademisyenden elektronik anket yöntemi ile elde edilmiştir. Geliştirilen hipotezler, Kısmi En Küçük Kareler (Partial Least Squares-PLS) algoritması kullanılarak "yapısal eşitlik modellemesi" ile test edilmiştir. Araştırma sonuçları doğrudan ve toplam etkiler açısından değerlendirilmiştir. Buna göre, akademisyenin çalışma ortamı memnuniyetinin, kişisel gelişim ve kariyer memnuniyeti düzeyini artırdığı gözlemlenmiştir. Ayrıca akademisyenin kişisel gelişimi de kariyer memnuniyeti düzeyini artırmıştır. Araştırmada akademisyenin organizasyonuna olan güveni, kişisel gelişim üzerinde anlamsız bir etki oluşturmaktadır. Ayrıca akademisyenin organizasyona güveni, kariyer memnuniyeti düzeyini de artırmaktadır. Araştırma modelindeki dolaylı etkiler incelendiğinde; çalışma ortamı memnuniyetinin kariyer memnuniyeti üzerindeki etkisinde, kişisel gelişim değişkeni aracı bir etkiye sahiptir. Bununla birlikte organizasyona güven değişkeninin kariyer memnuniyeti değişkeni üzerindeki etkisinde, kişisel gelişim değişkeninin aracı etkisi olmadığı gözlemlenmiştir.
AtıfTR Dizin3İncele - MakaleAçık Erişim2021Relationships Between Lifestyle Variables, Satisfaction Levels, Self- Esteemes and Perceived Ease of Use in Consumers Online Shopping
Durmuş, İbrahim
In today's web environment, many factors may affect consumers' purchase of ready-made clothing\rproducts. In many previous studies, these factors were examined separately. Unlike the previous researches,\rwhile consumers purchase ready-made clothing from the web; It was aimed to determine the level of\rrelationship between each other, their lifestyles, satisfaction levels, and self-esteem and their ease of use. For\rthis purpose, the electronic survey method was applied to 390 consumers who buy ready-to-wear products from\rdifferent sites on the web, and the related results were interpreted with structural equation modeling. When the\rresearch results are evaluated in general; The ease of use perceived for the websites has revealed a full mediation\reffect in the effect of consumers on their satisfaction. The perceived ease of use has shown a partial mediating\reffect on the impact of consumers' uniqueness on self-esteem. The ease of use perceived by consumers in the\rimpact of diversity searches on their satisfaction and self-esteem has had a partial mediating effect. Also, the\rease of use perceived towards the websites also showed a partial mediating effect on the satisfaction levels of\rconsumers and their self-esteem.
- Derleme MakaleAçık Erişim2021Scopus SJRQ3Current Status of Forage Crops Cultivation and Strategies for the Future in Turkey: A Review
Tan, Mustafa; Yolcu, Halil
Forage crops cultivation area in Turkey is 2.312 million ha in 2020. The rate of forage cultivation in the total agricultural area is 6.1%, and its rate in the field land is 12.3%. Lucerne, silage corn, oat, vetch, and sainfoin are main forage crops in Turkey. The amount of produced is 16.8 million tons of hay and 48.8 thousand tons of seeds. The forage crop cultivation areas have increased by 206% since the beginning of the 2000s due to the government subsidies. However, shortage of quality roughage is still a big problem for animal husbandry of the country. For this reason, new strategies should be developed to increase forage cultivation areas by considering global warming, drought, and climate change. In order to meet the need for roughage, it is necessary to expand the cultivation area of forage crops as winter catch crops and second crops. In addition, some of the fallow fields should be utilized by growing drought-resistant forage species. The fields abandoned due to different problems should be used for the cultivation of suitable forage crops.
AtıfWoS27OpenAlex35TR Dizin5
İncele - MakaleAçık Erişim2021The Impact of Environmental Technological Innovations on CO2 Emissions: The Case of OECD Countries
Akyol, Mehmet; Mete, Emrullah
Global warming and climate change, caused by greenhouse gas emissions, have compelled all countries to reconsider their production factors. Developing technologies to reduce emission volumes has been one of the priority targets for countries. This study investigated the impact of environmental technological innovations on CO2 emissions in 18 OECD members. The panel generalized method of moments (GMM)was employed in the study to produce estimates for the period between 2005 and 2018. Energy consumption, economic growth (GDP), and technological innovation data were used as independent variables in the study, CO2 emissions were used as dependent variable, whereas the number of patents preventing climate change was used as a technological innovation indicator. The analysis results showed that a 1% increase in patent applications for preventing climate change reduced CO2 emissions by 0.02%. However, a 1% increase in energy consumption caused an increase of 0.56% in CO2 emissions. Finally, the 1% increase in the GDP growth rate caused an increase of 0.002% in CO2 emissions.
AtıfWoS6OpenAlex20TR Dizin14İncele - MakaleAçık Erişim2021Relations between Foreign Direct Investment and Exchange Rate Volatility in Turkey: Analysis of Symmetric and Asymmetric Causality (2001:M1-2020:M2)
Doganay, Muharrem Akin; Recepoglu, Mursit; Deger, Mustafa Kemal
The objective of this study was to examine the relationship between exchange rate volatility and Foreign Direct Investment (FDI) in Turkey that adopting liberal policies in the post-1980 period. In this study, the relationships between FDI and exchange rate volatility were determined by symmetric (Fourier Toda-Yamamoto) and asymmetric (Hatemi-J) causality tests using the monthly data for the period of 2001:M1 - 2020:M2. According to the symmetric causality test results, there is a one-way relationship from FDI to exchange rate volatility. According to the results of the asymmetric causality test, there are two-way and significant causal relationships between the variables of FDI and exchange rate volatility. These results show the importance of reducing exchange rate volatility for the Turkish economy.
AtıfOpenAlex21TR Dizin4İncele - MakaleYalnız künye2021An Analysis of the Pictures in Physics Textbooks in Terms of Gender Roles
Takaoglu, Zeynep Baskan
Education is one of the fundamental needs of individuals. However, sometimes undesirable attitudes such as gender discrimination can be taught through textbooks or other resources in educational activities. This study aimed to explore the images in textbooks in terms of gender roles. Physics textbooks were analyzed considering the use of images of men and women, the professions they belong to, and the people, places, and actions in which they are shown together. Physics textbooks used in the 9th, 10th, 11th, and 12th grades in Gumushane in the 2018-2019 academic year were examined. In this research, conducted in a qualitative research design, the document analysis technique was used for the data collection. The data were analyzed with the content analysis technique. The results showed that the images in physics textbooks include more male images, and the male gender is more often represented in professional professions and artists, and men are often depicted alone or as public actors, with professional staff, and outdoors. Female figures, on the other hand, are shown less in the textbooks, and they have taken on the duties assigned to women by the society, which are mostly inside the house. Based on this, the results reveal that Physics textbooks show a favorable position for men and that and the representation of gender roles is applied unequally. Moreover, it is also observed that traditional gender roles are displayed in textbooks through hidden curricula.
AtıfTR Dizin5İncele - MakaleAçık Erişim2021On fourth order accuracy stable difference scheme for a multi-point overdetermined elliptic problem
Ashyralyyev, C.; Akyuz, G.
In this paper fourth order of accuracy difference scheme for approximate solution of a multi-point elliptic overdetermined problem in a Hilbert space is proposed. The existence and uniqueness of the solution of the difference scheme are obtained by using the functional operator approach. Stability, almost coercive stability, and coercive stability estimates for the solution of difference scheme are established. These theoretical results can be applied to construct a stable highly accurate difference scheme for approximate solution of multi point overdetermined boundary value problem for multidimensional elliptic partial differential equations.
AtıfOpenAlex1İncele - MakaleYalnız künye2021Scopus SJRQ3The simple right ventricle contraction pressure index: A novel method for echocardiographic assessment of right ventricle dysfunction in acute pulmonary embolism
Acar, Emrah; Ozgul, Neryan; Izci, Servet
Purpose The simple right ventricular contraction pressure index (sRVCPI) is a new echocardiographic variable for estimating the right ventricular systolic function. Our aim was to investigate the association between the sRVCPI, the pulmonary embolism severity index (PESI), and mortality rate in acute pulmonary embolism (APE). Methods We included in this study 116 patients diagnosed with APE by pulmonary computed tomography angiography or ventilation/perfusion scintigraphy. They were divided into two groups based on the simplified PESI < or >1. Tricuspid regurgitation velocity and TAPSE were measured and used for sRVCPI calculation. Results Mortality was higher in patients with a higher sRVCPI (P < .001). In receiver operating characteristic (ROC) curve analysis using a cut-off level of 312.8 mm Hg mm, sRVCPI predicted mortality with a sensitivity of 86.8% and specificity of 69.5% (ROC area under curve: 0.712; 95%CI 0.597-0.882; P < .001). The sRVCPI was lower in the sPESI >1 than in the sPESI <1 group (364.3 +/- 31.9 vs 511.6 +/- 26.1; P < .001). There was an inverse correlation between sRVCPI and the sPESI score (-0.784; P < .001). Conclusion The sRVCPI correlated with the sPESI score and was associated with mortality in patients with APE. This easily measurable variable may be used to predict short-term mortality in APE patients.
- MakaleAçık Erişim2021Scopus SJRQ3Early clinical outcomes of inferior turbinate radiofrequency and lateralization combined with septoplasty
Mehel, Dursun Mehmet; Yemis, Tugba; Çelebi, Mehmet; Can, Erkan; Özdemir, Dogukan; Ünal, Asude; Özgür, Abdulkadir
Introduction: Mechanical obstruction is the most common form of nasal obstruction. Among the types of mechanical obstructions, septum deviation and inferior turbinate hypertrophy are the most prevalent. Objective: This study evaluated the early clinical outcomes of inferior turbinate radiofrequency and inferior turbinate lateralization combined with septoplasty in the treatment of nasal obstruction symptoms. Methods: The research retrospectively evaluated data from 33 patients (24 male, nine female) undergoing septoplasty and inferior turbinate radiofrequency (RF group) and 32 patients (24 male, eight female) treated with septoplasty and inferior turbinate lateralization (LAT group), who were admitted, with complaints of nasal obstruction, to the University of Health Sciences, Department of Otorhinolaryngology, between January 1, 2017 and January 1, 2018. The patients' preoperative and 6-month postoperative symptoms were evaluated via the Nasal Obstruction Symptom Evaluation, the NOSE scale. Results: The mean preoperative NOSE scores were 10.3 +/- 4.2 in the RF group and 10.9 +/- 4.9 in the LAT group, and the mean six-month postoperative scores were 1.09 +/- 1.3 in the RF group and 1.2 +/- 1.3 in the LAT group. There was no significant difference in NOSE scores between the two groups (p> 0.05). Conclusion: The data obtained in this study show that both methods result in similar outcomes in terms of relieving nasal obstruction symptoms in patients requiring inferior turbinate intervention. Therefore, the researchers believe that, in each case, the intervention method should be selected at the discretion of the patient and surgeon(s). (C) 2020 Associacao Brasileira de Otorrinolaringologia e Cirurgia Cervico-Facial. Published by Elsevier Editora Ltda.
AtıfWoS3OpenAlex3
İncele - BildiriYalnız künye2021Scopus SJRQ2Evaluation of Vibrational Spectroscopy Techniques (NIR, MIR, Raman) Combined with Chemometrics in Detecting Adulteration of Essential Oils.
Menevseoglu, Ahmed; Gumus, Cansu
- MakaleAçık Erişim2021Investigating the Mediator Role of Knowledge about Halal Food and the Importance Given to Halal Food in the Effect of Religiosity on the Intention to Purchase Halal Food
Avai, Ibrahim; Köroglu, Ali
In this study, it is aimed to examine the effect of religiosity on the intention of purchasing halal food and the mediating roles of knowledge and importance given to halal food in this relationship. SPSS, AMOS and PROCESS programs were used in the analysis of the obtained data. As a result of the analysis, it was concluded that knowledge about halal food and the importance given to halal food have a partial mediating effect on the effect of religiosity on the intention to purchase halal food.
AtıfWoS2OpenAlex12TR Dizin7İncele - BildiriYalnız künye2021BroomyCell: An Introductory Educational Software for Neuroscience
Ozcan, Zubeyir; Yildirim, Omer; Kayikcioglu, Temel
Nerve cells are the basic building blocks of the nervous system. Therefore, the first step in neuroscience education is the introduction of nerve cells. However, both the complexity of nerve cells and the difficulty of their experimental examination make it difficult to test nerve cells practically. Therefore, simulation of nerve cells is found to be significantly effective. The difficulty of examining this type of cells experimentally shows its effect on neuroscience education. This brings to the fore the necessity of virtual laboratory environments designed for use in education. In this study, BroomyCell, which is designed by us as an introductory educational software in neuroscience education, was introduced. With this desktop application, it is aimed that potential neuroscientists learn their fields experimentally and without the need for a physical laboratory.
- MakaleYalnız künye2021The Slogan Effect: The Power Of Brand Discourse In Liking And Purchasing Behaviour
Aslan, Emre S.; Demirel, Cagatay
Discourses have been a determiner effect through human history. However, only with the development of communication technologies and globalization of trade the strategic importance of discourse has increased. Especially establishments comprehending the importance of branding have been searching for a strong discourse. The most effective and catchy of those discourses are called slogans. Slogans present the power of brand discourse while determining the superiority of the brand in commercial wars. Especially global brands are aware of the powerful effect of slogans. Based on this awareness, while they conduct their communication efforts, they endeavour to have strong slogans. When the literature is inspected it is seen that there are not enough studies regarding slogans which have a strong effect on both commercial and social life. This study is conducted both with the aim of satisfying this need and revealing the power of brand discourse in liking and purchasing behavior. Within this aim, an experimental study is applied, and it is tried to measure the effect of slogan liking to slogan purchasing behaviour, brand liking, brand purchasing behaviour, brand and slogan relationship liking and purchasing behaviour. In this study, a quantitative research method is applied, and the data is collected through questionnaires; the gathered data were analyzed in terms of frequency, regression and correlation. According to the results slogan liking greatly affects all the variables presented in the research model. Thus, it is concluded that brand discourse has a very powerful effect.
AtıfWoS2İncele - MakaleAçık Erişim2021Evaluation of the process for acquisition of land property in the implementation of power transmission line projects
Döner, Fatih; Kaya, Erhan
While preparing PTL (Power Transmission Line) projects, the land where the PTL is crossing is determined by considering criteria such as economy, environment and security. The realization of PTL projects is possible after acquisition of property of these lands. In this study, the process of acquisition land property in the implementation of PTL projects is evaluated. When data are examined, it is seen that the number of lawsuits filed against the PTL in past year was 15759 and rate of non-court settlement with land owners in the five-year period was 13%. The main factor for the high number of lawsuits and low settlement rate is real estate valuation studies in determining the price to be paid for land to which the PTL will be established. As land value determined as a result of valuation methods, criteria and rates referenced does not reflect real value in most cases, no agreement can be reached with the land owners. It is considered that most ideal solution from a legal point of view is to prepare a holistic valuation law that regulates real estate valuation activities, from an organizational point of view is to set a connection between cadastre and real estate valuation and from a technical point of view is to set-up a database which enables managing properties of real estates and their up-to-date values.
AtıfWoS1OpenAlex7TR Dizin5İncele - MakaleAçık Erişim2021The investigation of mechanical properties of polypropylene fiber-reinforced composites produced with the use of alternative wastes
Külekçi, Gokhan; Çullu, Mustafa
Various studies on the disposal or storage of the wastes generated due to mining activities have been carried out until today. With the developing technology, the use of alternative products instead of aggregates in Composite and the effect of fiber addition were investigated. The most common of these studies is the bending strength tests on the beam sample. In this study, solid wastes generated by mining operations were used instead of aggregate used in Composite. Beam samples were poured with the dimensions of 40x40x160 mm by adding 4-6 kg/m(3) polypropylene fiber to the mixture obtained by using these solid wastes; then, its effects on ultrasonic pulse velocity test, tensile test, and compressive strength tests were conducted. According to the results of these tests, it was found that the fibers had a positive effect on compressive strength and bending strength. Also, it was found that water absorption rates and densities did not have an effect, while the ultrasonic pulse velocity decreased with increasing fiber content.
AtıfWoS12OpenAlex18TR Dizin4İncele - MakaleAçık Erişim2021Scopus SJRQ1Chemical compositions by using LC-MS/MS and GC-MS and antioxidant activities of methanolic extracts from leaf and flower parts of Scabiosa columbaria subsp. columbaria var. columbaria L.
Akar, Zeynep
The members of the Scabiosa genus are one of the traditional medicinal plants used in the treatment of many diseases, in particular the treatment of scabies. In this study, it was aimed to determine antioxidant activities and chemical composition of methanolic extracts of leaves and flowers of Scabiosa columbaria subsp. columbaria var. columbaria. The phenolic contents of both parts of the plant were analyzed by LC-MS/MS. A total of 6 phenolic compounds were determined and chlorogenic acid was the major compound in both flower and leaf parts of the plants, with 5936.052 mg/g and 8021.666 mg/g, respectively. 6 different methods were used to determine the antioxidant activity of the plant parts. Both leaf and flower parts of the plant showed high antioxidant activity in all tested methods and the antioxidant activity values of the leaf part were measured higher than those of the flower part for four tests. The methanol extracts of the plant parts was analyzed with GC-MS and number of the essential oil compounds in the leaf and flower parts were determined as 17 and 13, respectively. Linalool compound was also found to be common in both parts of the plant. The major compounds of the essential oils were identified as 4Octadecenal (30.01%) in the flower and carvone (35.44%) in the leaf. In addition, terpene derivatives was determined as 90.32% of the highest essential oil group in the leaf, while this value was determined as 1.42% in the flower. For the flower, aromatics were determined as the main component group with 21.31%. (c) 2021 The Author. Published by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
AtıfWoS22OpenAlex29İncele - MakaleAçık Erişim2021DETERMINING INDIVIDUALS' KNOWLEDGE, ATTITUDES AND EXPERIENCES CONCERNING MENENGIC COFFEE AND BITTIM SOAP
Dogan, Melike Demir; Orak, Sukran
This study was conducted to determine the knowledge, attitudes, and experiences of individuals concerning menengic coffee and bittim soap. In the study, the data were collected from 152 individuals living in the cities of Siirt and Mardin, between 01 June and 15 September 2021, actively via internet-social media (E-Mail, WhatsApp, Instagram, Facebook, etc.). When the consumption frequency of those who used bittim soap or any other bittim product was evaluated, it was observed that 16.4% of them used it every day. While 67.8% of the participants stated that they drank menengic coffee, 46.7% reported that they knew the health benefits of menengic coffee. While 83.6% of the participants reported that bittim soap was effective in skincare, 81.8% stated that bittim soap was effective in hair growth. All of the participants stated that menengic coffee was effective in dropping blood pressure. In addition, 67% of the participants stated that this coffee was effective in recovering stomach problems, 50.5% as a blood glucose regulator, 46.6% for skincare, 45.6% for reducing respiratory distress, 45.6% as a diuretic, and 42.7% as an antiseptic. When the experiences of the individuals were evaluated, it was determined that bittim soap was effective in skin care and hair growth. Menengic coffee was effective as a blood glucose regulator, a diuretic, and an antiseptic in dropping blood pressure, recovering stomach problems, and reducing respiratory distress.
AtıfOpenAlex1İncele - MakaleAçık Erişim2021Scopus SJRQ3Spatial Data Model for Rural Planning and Land Management in Turkey
Inan, Halil Ibrahim
In Turkey, in the areas of rural planning and land management, problems regarding data retrieval, data quality, implementation scenario and legal base (law or regulation) have long been experienced. In this study, in order to contribute to resolving such problems, a conceptual/semantic data model was designed which focuses on the definition of required data, determination of their basic qualities and also their relations. As the preparation step for the model development, interviews, and discussions with authorized people were carried out. In addition, for the definitions of the data in the model, the Land Parcel Identification System and Infrastructure for Spatial Information in the European Community (INSPIRE) are considered. For the model design, an object-oriented modelling method with the Unified Modelling Language (UML) notation was used. In the model, planning activities were focused on. It is envisaged that the model will guide work for the preparation of a technical regulation which may enable a standardized implementation throughout Turkey. It has also the potential to be an example for the implementation of laws related to spatial data both in Turkey and also worldwide.
AtıfWoS5OpenAlex4TR Dizin1İncele - MakaleYalnız künye2021Scopus SJRQ3Investigation of fly ash added light concretes with respect to gamma radiation transmission properties of 133Ba and 137Cs
Külekçi, Gokhan
With the help of the developing concrete technology, light concrete and fly ash may be used in several concrete-related fields. To provide protection from radiation, which is one of the current problems of the world, several researchers have used fly ash, but very few researchers have worked on light concrete. To be protected from the effects of radiation, researchers have examined gamma radiation absorption properties by using heavy concrete and heavy aggregates. In this study, by using Class C fly ash at the doses of 30-50-100% instead of cement, three different light concretes were prepared. Density and compressive strength experiments were conducted on the composite blocks prepared with dimensions of 50*50*50 mm, and linear absorption coefficients (cm(-1)), mass attenuation coefficients (MAC) and Tenth value layer (TVL) radiation interaction parameters were measured. Radiation interaction parameters were obtained using an HP Ge gamma detector. For radiation measurements, four different photon energies as 583 keV (Ba-133), 609 keV (Ba-133), 661 keV (Cs-137) and 911 keV (Ba-133) were used. As a result of the analyses, it was determined that compressive strength decreased as the fly ash content increased, the lowest compressive strength values were obtained in the samples containing 100% fly ash among the prepared composites, and density increased as the fly ash content decreased. It was observed that, in the prepared composites, as the energy levels increased, the linear absorption coefficients also increased, and the samples containing 30% fly ash provided the best TVL value on the energy level of 911 keV. With this study, it was revealed that fly ashes that are used in many fields could be used as a radiation shield. Additionally, with this study, due to not using heavy aggregates and due to the production of light concrete in the production of radiation shields, the cost of shield production will significantly decrease.
AtıfWoS9OpenAlex12İncele