Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Dertli, Enes(17)
- Şahin, Engin(8)
- Bayram, Ozkan(7)
- Esmer, Yusuf(7)
- Degirmenci, Yavuz(6)
- Yilmaz, Mustafa Tahsin(6)
- Dursunoğlu, İsmail(5)
- Göktaş, Bora(5)
- İspirli, Hümeyra(5)
- Şenay, Volkan(5)
- Bulut, Mehmet(4)
- Can, Zehra(4)
- Kaban, Güzin(4)
- Korkmaz, Özge(4)
- Pabuçcu, Hakan(4)
- Sagdic, Osman(4)
- Sefali, Abdurrahman(4)
- Serencam, Hüseyin(4)
- Simsek, Onder(4)
- Taylan, Osman(4)
- Ag, Aliriza(3)
- Bayraktar, Bülent(3)
- Bulut, Ayhan(3)
- Cuce, Erdem(3)
- Dayi, Faruk(3)
- Durmaz, Atakan(3)
- Gökçe, H. Süleyman(3)
- Küçük Demir, Betül(3)
- Mavi, Ahmet(3)
- Ucan, Izzet(3)
- Uçurum, Metin(3)
- Özen, Soner(3)
- Öztürk, Mesut(3)
- Abdioglu, M.(2)
- Acar, Adalet(2)
- Agirman Aydin, Tuba(2)
- Akay, Ebru Çağlayan(2)
- Akkan, Yaşar(2)
- Akkoyunlu, Ebubekir(2)
- Akkuş, Ömer(2)
Yayınlar
- MakaleYalnız künye2019Sürdürülebilirlik, Çevresel Riskler ve Çevre Muhasebesi Arasındaki İlişkinin Tespiti: Erzurum İlinde Bir Araştırma
Güler Sülük, Rana; Ag, Aliriza
Amaç – Bu çalışmada sürdürülebilirlik kavramı çeşitli boyutlarıyla ele alınmakla birlikte Erzurumili organize sanayi bölgesindeki üretim işletmelerinin sürdürülebilirlik, çevre, çevresel riskler veçevre muhasebesi konularına yönelik yaklaşımları tespit edilmeye çalışılmıştır.Yöntem – Bu araştırmada, verilerin toplanmasında anket yöntemi kullanılmıştır. Bu konudabelirtilmesi gereken önemli noktalardan biri araştırmanın teorik çerçevesinin oluşturulması veuygulama aşamasında literatür tarama yönteminden yararlanılmış olmasıdır. Anket yoluyla eldeedilen veriler frekans analiziyle incelenmiş olup kurulan hipotezler Çoklu Regresyon ve Korelasyonanalizine tabi tutulmuştur.Bulgular – Sürdürülebilirlik, çevresel riskler, çevre muhasebesi ve çevre politikalarına yönelikoluşturulan hipotezlere göre yapılan analizlerde ortaya çıkan değerlerin anlamlı ve pozitif etkiyesahip olduğu görülmüştür. Bununla birlikte araştırma bölgesindeki işletmelerin çevresel konularve çevre muhasebesi hakkında düşüncelerine yönelik yapılan analizde, şirketlerin %89.2’sininçevresel sorunların önlenmesinde çevre ile dost alternatif kaynaklarının kullanılmasınıönemsedikleri tespit edilmiştir.Tartışma – Bu çalışmanın sonucunda elde edilen bulgulardan hareketle işletmelerinsürdürülebilirliği anlayabilmeleri ve bünyelerinde en iyi şekilde uygulayabilmeleri için ilgili kurumve kuruluşlardan özellikle bölgede bulunan üniversitelerden destek alması önerilebilir. Diğeryandan işletmelerin sürdürülebilirlik konusundaki tutumlarının çevre muhasebesi ve çevrepolitikalarına uygun olması ve işletmelerin çevre sorunlarını önlemesi için çevreyi koruyupgeliştirmeye yönelik Ar-Ge çalışmalarına önem vermesi gerektiği söylenebilir.
AtıfTR Dizin1
İncele - MakaleAçık Erişim2019Profesyonel Etik Standartları İle Örgütsel Vatandaşlık Davranışı Arasındaki İlişkide Örgütsel Özdeşleşmenin Rolü: Ortaokul Öğretmenleri Üzerine Bir Araştırma
Battal, Fetullah
Amaç – Bu çalışmanın amacı öğretmenlerin profesyonel etik standartları benimseme düzeyi, örgütselvatandaşlık davranışı ve örgütsel özdeşleşme algıları arasındaki ilişkileri incelemektir.Yöntem – Araştırmada kullanılan veriler, Bayburt ilinde görev yapmakta olan 214 ortaokulöğretmeninden oluşmaktadır. Anket formu öğretmenlere elden dağıtılarak yüz yüze yapılmıştırToplanan veriler üzerinden öncelikle SPSS programı kullanılarak frekans analizi, güvenirlik analizi,korelasyon analizi yapılmıştır. Daha sonra AMOS programı yardımıyla doğrulayıcı faktör analiziyapıldıktan sonra bootstrap yöntemi ile doğrudan ve dolaylı ilişkiler belirlenmiş ve yapısal eşitlikmodellemesi ile temel model analiz edilmiştir.Bulgular – Çalışmanın sonucunda ulaşılan bulgulara göre profesyonel etik standartları benimsemedüzeyinin örgütsel vatandaşlık davranışını artırdığını göstermiştir. Ayrıca örgütsel vatandaşlıkdavranışının öğretmenlerin örgütsel özdeşleşme algı düzeylerini de artırdığı görülmüştür. Bununyanında öğretmenlerin profesyonel etik standartları benimseme düzeyinin örgütsel vatandaşlıkdavranışları üzerindeki etkisinde örgütsel özdeşleşmenin kısmi aracılık rolünün olduğu tespitedilmiştir.Tartışma – Yapılan çalışma da öğretmenlerin algıladıkları profesyonel etik standartlarının örgütselvatandaşlık davranışını olumlu ve pozitif yönde etkilediğini aynı zamanda örgütsel özdeşleşmealgılarının da bu ilişki çerçevesinde pozitif ve anlamlı yönde etkilendiğini göstermiştir. Elde edilendiğer sonuç da profesyonel etik standartlarının, örgütsel özdeşleşmenin bulunduğu bir modeldeörgütsel vatandaşlık davranışı ile hem doğrudan etkisinin hem de dolaylı etkisinin bulunduğuyönündedir. Böylece bu çalışmanın çıktılarından hareketle öğretmenler ile ilgili ilerde yapılacakçalışmalara ışık tutabileceği düşünülmektedir.
AtıfOpenAlex2TR Dizin3İncele - MakaleYalnız künye2019Investigation of Speech Anxiety Levels of Physical Education and Sports Department Students in Terms of Different Variables
Ucan, Izzet; Ozan, Murat
The aim of this study is to determine the speech anxiety levels of physical education and sports department students and to examine them in terms of different variables. The research was carried out with 202 students (66 female and 136 male) studying in different departments of Erzurum Ataturk University Faculty of Sports Sciences in 2108/2019 academic year. The data related to the study were collected by Speech Anxiety Scale developed by Yaman and Sofu (2013) and the Demographic Information Form determined by the researchers. Frequency distribution was used to determine the students' demographic characteristics, Independent Samples T-test was used to examine the differentiation between two independent variables and speech anxiety and One-Way ANOVA analysis was used to examine the differentiation between more than two variables and speech anxiety. All these tests were analyzed in SPSS 21 package program and the significance level was accepted as p <0.05. As a result of the research, it was determined that there was no significant difference between the students' demographic characteristics, sporting activities and speech anxiety levels. Although there was no significant difference, it was also observed that the male students' total score of speech anxiety was lower than that of female students numerically. It was observed that, regarding the students' family structure variable, those who had a fragmented family, who had a monthly personal income level of over 1501 TL, who studied in the department of management, did sports activities and performed both sports as regards their sports activity type, had numerically a low level of speaking anxiety when compared to other variable groups. In the light of these results, it is suggested that students should be encouraged to participate in sports activities and to engage in different social activities in order to reduce their speech anxiety levels. Apart from this study, it is recommended to investigate using different variables and to determine the variables that may have a positive or negative effect on speech anxiety.
- MakaleAçık Erişim2019Self-Representation of the Romany Ethnicity in Social Media and Socio-Digital Compensation of the Otherness
Güzel Korver, Semra; Keskin, Savas
This study consists of a cultural analysis of social media usage as a platform for self-representation and socio-digital compensation of Roman users who are exposed to problems in terms of representation and recognition due to their position as a minority group in Turkey. The aim of the study, which examines the identity building of a group of Romany users organized on Facebook under the name of Romany Research Center, is to determine the functions, maneuvers and cultural aspects of the self-representation practices of the Romany ethnic identity under socio-digital conditions and to understand the ways in which digital building actions transform the relationship between identity and otherness in the context of Romany users. In the study, which focuses on representation of ethnicity and cultural identity, the netnography method, defined as social network ethnography, was used to analyze the cultural interfaces and shares on the page. Within the framework of the method, the shares on the community page were coded as cultural layers and identity generators, and a wide-ranging observation and document review process was undertaken. The cultural codes interpreted from a descriptive perspective show that the members who share the Romany identity think about the perception of being `We' together with the Turkish national identity and construct another identity known as Gaco (Non-Romany). The findings of the study reveal that the organization/composition of proving laundering and innocence is dominant instead of autonomous and positive constructs in the socio-digital construction process of the Romany ethnic identity. In this case, it may be argued that the community members continue to create an awareness of their problems by closing the information gap in a sense by freely displaying their positive identities that the media ignores.
AtıfWoS1OpenAlex4
İncele - MakaleAçık Erişim2019The Role of Corporate Social Responsibility in The Effect of Strategical Leadership on Corporate Reputation Perception
Klzil, Seda; Naktiyok, Atilhan
The primary aim of this research is to examine the role of corporate social responsibility (CSR) in the effect of strategic leadership behaviors of the executives on corporate reputation perception which develops in employees. In this research, a scale was used to collect data from 517 employees of 3 private hospitals in Trabzon and collected data was analyzed with required statistical analysis. As a result of research it has been determined that strategic leadership behaviors of the executives has a positive effect on corporate reputation perception of the employees and CSR plays a a partial mediating role on the relationship between strategic leadership-corporate reputation.
AtıfWoS1OpenAlex5TR Dizin6İncele - MakaleAçık Erişim2019Effects of Forced-Air Oven, Microwave and Halogen Lamp Roasting on Salmonella Inactivation an Some Physicochemical Characteristics in Sesame Seed
Sert, Durmus; Mercan, Emin
This research evaluated the efficacy of forced-air oven. halogen lamp and microwave roasting to inactivate 3 serotypes of Salmonella (S. Typhimurium, S. Newport and S. Montevideo) in sesame seeds. Also, weight loss. textural properties (hardness), water activity and color values of sesame seeds were investigated during the roasting processes. Microwave and halogen roasting inactivated completely Salmonella in sesame seeds which inoculated with 5.9 log cfu/g after 4 and 9 min, respectively. However, forced air oven roasting for 15 min achieved 2.0 log decrease in Salmonella. Halogen and microwave rapidly reduced hardness and a(w) values of sesame seeds compared to forced air oven. Weight loss of sesame seed in halogen and microwave roasting processes was faster than that of forced air oven. Color properties of sesame seeds were significantly affected by roasting methods. The results showed that halogen and microwave roasting can significantly minimize the risk associated with Salmonella in sesame seeds. Also. applications of halogen and microwave significantly decreased the roasting time as compared to forced-air oven.
AtıfWoS1OpenAlex2TR Dizin2İncele - MakaleYalnız künye2019Scopus SJRQ3Some physical properties of a Li4Ti5O12 thin film electrode manufactured by radio frequency magnetron sputtering
Senay, Volkan; Özen, Soner
A Li4Ti5O12 thin film was fabricated on an ITO layer previously prepared on a glass microscope slide via RF magnetron sputtering technique. The structural, morphological, optical and electrochemical properties of the produced thin film were studied by several techniques. According to the findings, the investigated film has a crystalline structure with small grains. Its surface is nano-structured, dense and smooth. The system (LTO/ITO/glass) exhibits an average transmittance rate above 70% in the visible region with a band gap energy value of 3.8 eV. The obtained impedance spectrum shows a good blocking behavior. The Warburg diffusion element with a value of 817 S.s(1/2) provides easy Li-ion diffusion.
AtıfWoS4OpenAlex4İncele - MakaleYalnız künye2019The Relationship Between Credit Utilization Rate and Inflation Rate: A Case Study of Turkey
Korkmaz, Ozge
The reforms to be made in relation to the determination of the relationship between inflation rates and loans in a country are very effective in the success of the anti-inflation programs. Within this context, the aim of this study to investigate the impact of utilization rates of consumer loans as well as commercial and corporate credit cards on the volatility of consumer price index (CPI) and producer price index (PPI) in Turkey for the 2005:12-2018:1 period. In this study, the interaction between variables was investigated by using symmetric and asymmetric conditional volatility models. As a result of the study, it was found that the rates of credit use raised the volatility of inflation rates while the use of installment commercial loans and corporate credit cards reduced their volatility.
- MakaleYayıncıda açık erişim2019The Bolsheviks Attempt to Overthrow the Provisional Government: July Uprising 1917
Sadigov, Ramin
1917 was a turbulent year for Russia. Successive events in the country led to the collapse of the tsarist regime. The administration was taken over by a provisional government, but its actions did not satisfy the revolutionary organizations. Especially, the Bolshevik Party did not compromise with the government and acted against it. Moreover, accusing other parties on cooperating with the government they attempted riot in July, but failed. It is generally focused on October Revolution in studies about the activities of the Bolsheviks in Turkey. This is because they succeeded in the October revolution. But they are known to have attempted riot and wanted to overthrow the government even before October. However, it was identified that this issue did not take part in the studies. Therefore, in this study Bolsheviks' riot attempt in July was examined and focused on how they were prepared and how they organized their supporters. During the study, the role of the Bolsheviks in the riot was scrutinized in the light of the official and unofficial press of the period, the first period of Soviet resources and the recent researches.
- MakaleAçık Erişim2019SARIKAMISH OPERATION ACCORDING TO RUSSIAN SOURCES
Sadigov, Ramin
On October 29, 1914, after the bombing of the Black Sea coast of Odessa, Sevastopol, Feodosia and Novorossiysk by two Ottoman naval vessels, the Russian government porclaimed that diplomatic relations with the Ottoman state had been cut off and immediately called the Russian embassy delegation in Istanbul back to the country. On November 2, Tsar Nikola issued a manifesto and declared war against the Ottoman Empire and ordered the Caucasus army to attack the Turkish army by crossing the border. Thus, the Ottoman Empire actually entered the First World War. After Russia declared war against Ottoman Empire , clashes between the two sides began in the Eastern Anatolia region. The main aim of Russia was the Capture of Erzurum which was also the base of the III. Corps of the Ottoman Empire . The Ottoman Empire, aware of this situation, prepared a plan. According to this plan, Russia will be firstly removed from the region and so Kars and Ardahan will be rescued. Later on, Baku will be recovered by moving to the South Caucasus and all Turkish-Islamic peoples living under Russian domination will be encouraged to rebel against Tsarism. In order to implement this plan, the Ottoman Empire decided to carry out a risky operation in December 1914. This operation, known in history as Sarikamis Operation, lasted for about 15 days and ended with great defeat for the Ottoman Empire. The information given by the Russian sources on the Sarikamis Operation, which still has great debate on today, is undoubtedly very important. In this study, wiew and aspects of Russian press and literature beyond archive sources towards Sarikamish Operation was examined.
AtıfOpenAlex6İncele - MakaleYalnız künye2019The Relationship between Hand/Arm and Leg Strengths with Hand/Foot Reaction Time
Ucan, Izzet
The aim of this study is to determine whether there is a relationship between hand/arm and leg flexion and extension strengths of elite athletes as well as back and general leg strengths and reaction times. From various branches, 29 healthy elite male athletes between 18-25 years old participated in the study. Flexion and extension strengths in hand/arm and leg, back and general leg strengths were measured with Lafayette Manuel muscle test device, while back and general leg strengths were measured with TAKKEI (brand) dynamometer, and reaction times were measured with the device developed by Agirbas et. al. (2019). The relationship between the values of the athletes was examined with Bivarite - Pearson Corelattion test. The results were interpreted at the significance level of .05. Statistically, significant relationships were determined between right-hand extension strengths and right-hand visual reaction times of the athletes while sitting, between left-hand flexion strengths and left-hand auditory reaction times while sitting, and between general leg strengths and all reaction times. In the study, it was concluded that flexion and extension strengths do not affect reaction time but there is a negative-sided strong relationship between general leg strengths considered as the resultant Strengths and all the leg reaction times.
- MakaleAçık Erişim2019Scopus SJRQ3The relationship between renewable energy consumption and economic growth The case of Bulgaria
Can, Hamit; Korkmaz, Ozge
Purpose The purpose of this study is to investigate the relationship between renewable energy and economic growth of Bulgaria. Design/methodology/approach This study analyzes the relationship between renewable energy and economic growth of Bulgaria for the period 1990-2016, based on annual data, by using the Toda-Yamamoto analysis and Autogressive Distrubuted Lag (ARDL) bound test. This period is characterized by the democratization of the Balkans and several crisis cycles in Bulgaria. Renewable energy consumption (REC, percentage of total final energy consumption), renewable electricity output (REO, percentage of total electricity output) and economic growth (GDP constant 2010 US$) were used. The levels or differences of the variables that are stationary were investigated using the augmented Dickey-Fuller (ADF), Philips-Perron (PP) and Kwiatkowski-Philips-Schmidt-Shin (KPSS) unit root tests. Findings Three different results were obtained from this study. One showed that renewable energy consumption and renewable electricity output are the causes of economic growth. Another result of this study is that economic growth and renewable electricity output are the causes of renewable energy consumption. The last result is that economic growth and renewable energy consumption are not causes of renewable electricity output. There was no long-term relationship between variables. Originality/value This study is an original work for Bulgaria, showing the results of the relationship between renewable energy and economic growth. In line with the results of this study, renewable energy projects related to Bulgaria can be predicted.
AtıfWoS76OpenAlex99İncele - MakaleYalnız künye2019The Relationship Between Strength, Speed, Flexibility, Agility, and Anaerobic Power in Elite Athletes
Tatlisu, Bulent; Karakurt, Sercan; Agirbas, Ozturk; Ucan, Izzet
The aim of this study was to determine whether there is a relationship between strength, speed, flexibility, agility, and anaerobic power in elite athletes. In various sport branches 29 active male athletes participated in this study with an average age of 21.14 +/- 1.98 years who without any health problems. Back and leg strength were measured by dynamometer (Takei), speed was measured by 20 meters test, agility was measured by T test, flexibility was measured by sit and reach test, vertical jump sit-reach test by Jumpmeter (Takei) anaerobic power was calculated by the Lewis formula. The data were analyzed in SPSS 22.0 for Windows package program. Bivariate - Pearson Correlation test was used to determine the relationship between strength, speed, flexibility, agility, and anaerobic power. The results were interpreted as .05 significance level. We were found positive and significant relationships between the back and leg force, between anaerobic power and vertical jumping, between anaerobic power and back force, between anaerobic power and leg strength, and between flexibility and vertical jumping. And also, there was a negative and significant relationship between flexibility and agility, between speed and vertical jump, and between agility and vertical jump. In this study, it was concluded that strength, vertical jump and anaerobic power was related both each other and the other. For this reason, we recommend that the trainings cover all motoric characteristics.
AtıfWoS3İncele - MakaleAçık Erişim2019Do We Know Organic Food Consumers? The Personal and Social Determinants of Organic Food Consumption
Ünal, Sevtap; Deveci, F. Gorgun; Yildiz, Tugba
The main aim of this study is determining which consumption motives and personal and social factors affect organic food buying decisions. Ajzen's Planned Behavior Theory (TPB) is used to explain consumers' organic food selection behaviors. In addition, the moderating role of uncertainty about organic foods and the mediating role of the price of organic foods were tested. Data were gathered via a survey of consumers of organic foods in Turkey. The research model was tested by Structural Equation Modeling (SEM) via Smart PLS3. The findings showed that consumptions motives of healthiness, easiness, mood, and convenience-price of organic foods motivate consumers to buy organic foods. In addition, environmental concern and negative emotions influence on attitudes towards organic foods and purchase intentions. On the other hand, subjective norms and self-monitoring do not influence attitudes towards organic foods and subsequent purchase intentions. Uncertainty has a moderating effect on the relationship between attitudes and purchase intentions whereas price has no mediating effect on the relationship between attitudes and purchase intentions.
AtıfWoS11OpenAlex19İncele - MakaleAçık Erişim2019Scopus SJRQ1Experimental and Theoretical Investigation of Short- and Long-Heel Cases of Cantilever Retaining Walls in Active State
Kamiloglu, Hakan Alper; Sadoglu, Erol
Failure surfaces are very effective in active lateral earth thrusts acting on cantilever retaining walls. The intersection of failure surface and cantilever retaining wall should be taken into account for determination of active earth thrust. Calculations of lateral earth thrusts vary for two different cases, short heel or long heel, based on the intersection of cantilever wall and failure surface. However, the common methods are devoted to a particular case (long heel or short heel). This study intended to suggest a new lateral earth thrust method that is applicable to cantilever walls with a short heel or long heel using the limit-equilibrium approach. For this purpose, an earth thrust-maximization algorithm was prepared and coded by using Matlab Environment to determine active earth thrust coefficients and failure surface inclination angles occurring behind a cantilever wall in an active case. Also, the failure surfaces occurring behind model cantilever walls and the failure cases were examined experimentally by using particle image velocimetry (PIV) analysis. Consequently, long-heel and short-heel cases and the effective parameters on the cases were investigated analytically and experimentally. (C) 2019 American Society of Civil Engineers.
AtıfWoS23OpenAlex24İncele - MakaleAçık Erişim2019Effects of Some Stabilizers on the Textural Properties of Set-Type Yogurt
Macit, Emine; Karaoglu, M. Murat; Bakirci, Ihsan
This study was conducted to investigate the effect of various stabilizers on textural properties of set yogurt. Yogurt samples were prepared by using seven various stabilizers such as sodium caseinate, gelatin, carrageenan, xanthan gum, guar gum, locust bean gum and native corn starch. Control group samples were produced without using stabilizer. Textural analyzes were made with a TA-XT2i texture analyzer. As a result of the statistical analysis, it was determined that stabilizer and storage time had a significant effect (p<0.01) on all texture parameters of yogurt samples, the relaxation force values were not affected by only storage period (p>0.05). In conclusion, Nacaseinate was the most suitable stabilizer for yogurt texture compared to all stabilizers. These findings may contribute to the selection of stabilizer material or preparation of stabilizer mixtures that can be used in the production of set type yogurt for developing different textural parameters.
AtıfWoS11OpenAlex6İncele - MakaleAçık Erişim2019Scopus SJRQ2Determination of Thermal Conductivity Properties in Some Wood Species Obtained from Turkey
Çavus, Vedat; Sahin, Siri; Esteves, Bruno; Ayata, Umit
With the increased awareness of thermal insulation of buildings, the knowledge of thermal conductivity of non-structural materials applied for roughing, cladding or flooring has become more important. The objective of this study was to investigate the thermal conductivity of 31 different wood species originated from the region of Izmir in Turkey. Thermal conductivity of air dried boards was determined in accordance to ASTM 5334 standard which measures this property on the interior of wood rather than on the surface. Thermal conductivity varied from 0.090 to 0.197 W/ mK. The highest thermal conductivity was obtained for oak and the lowest for Canadian poplar. A linear relation was obtained between wood density and thermal conductivity.
AtıfWoS42OpenAlex58İncele - MakaleYalnız künye2019Scopus SJRQ4DETERMINATION OF ANTIOXIDANT, ANTIMICROBIAL ACTIVITIES, PHENOLIC COMPOUNDS OF WILD ROSA L. SPECIES BAYBURT, TURKEY
Gidik, Betul; Akar, Zeynep; Can, Zehra; Sefali, Abdurrahman; Erturk, Omer
Five different rosehip (Rosa L.) species including, Rosa canina, Rosa iberica Stev, Rosa villosa, Rosa beggeriana Schrenk and same kind of but different location Rosa spinosissima grown in Bayburt from Turkey are studied. The wild species of Rosa L. were collected from Rocks and Steps, Field and garden borders. Morphological parameters were measured as fruit and seed weights and fruit and seed size. Ten fruits were chosen randomly for the measurement and take the average of them to determine the weights and size. In our study was determined antioxidant activity, antimicrobial activity and phenolic compounds. As antioxidant activity; total phenolic total flavonoid, condense tannin contents, CUPRAC, FRAP, ABTS. Nineteen standard of phenolic compositions of fruits and seeds were determined. Antioxidant, antimicrobial activities of the extracts were found high levels in rose hip species fruit than seed. Catechin, rutin protocatequic acid and CAPE were principal for all rose hip species fruit but, was not deteceted CAPE Kop Mountain, Yukari Kop Village Rosa spinosissima species. This suggests that the difference in location affects the phenolic content. Pearson Correlation analyze has done with the morphological parameters, GPS data, antioxidant activity and phenolic compounds by using the SPSS software programme version 25.0.
AtıfWoS3İncele - MakaleYalnız künye2019Scopus SJRQ1Assessment of Alternative Segregation Test Methods for Self-Consolidating Heavyweight Concrete
Gökçe, H. Suleyman; Aksan, Umut; Andiç-Çakir, Ozge
This investigation is focused on the use of alternative segregation test methods on high-performance self-consolidating heavyweight concrete. Many segregation test methods have been developed by researchers up to now; however, the disadvantages of these methods, such as being time-consuming, the requirement of excessive labor, and the lack of precision, cannot ensure their worldwide prevalence. In the study, the segregation limitations stated in various test methods, that is, the column test, density variation method, and 3-compartment sieve test, were evaluated on self-consolidating heavyweight concrete produced with barite aggregate. For this purpose, in total, eight self-consolidating heavyweight concrete mixtures designed in two water/binder ratios were prepared by replacing viscosity modifier, silica fume, and fly ash with ordinary Portland cement in different amounts. The mixtures were constituted in satisfactory segregation grades, allowing researchers to evaluate the relationship between those methods. The segregation coefficient limits of the column test, density variation method, and 3-compartment sieve test are recommended as 7%, 1%, and 6.3% for the self-consolidating heavyweight concrete mixtures tested in the study.
AtıfWoS5OpenAlex7İncele - MakaleYalnız künye2019Scopus SJRQ2Heat transfer enhancement in cylindrical fins through longitudinal parabolic perforations
Cuce, Erdem; Oztekin, Erman Kadir; Cuce, Pinar Mert
In our previous works, it is clearly addressed that optimisation of fin profile is of vital importance in terms of the rate of heat transfer from a hot surface, and the optimisation procedure depends on several factors. Within the scope of this research, a longitudinal cylindrical fin profile is under interest for the optimisation research. The purpose is to investigate the effects of longitudinal parabolic perforations on the fin parameters such as temperature distribution, effectiveness and efficiency, in which the fin surface is cooled by natural convection and radiation. Different concavity levels are considered to form parabolic perforations. The rate of heat transfer from fin surface is numerically correlated with the fin mass with respect to different concavity levels. According to results, heat transfer from unit fin mass is enhanced with the new designs. The outcome of the study can be used to optimise the needs for particular applications by making a decision between heat loss and weight options. That is, the increase in the concavity level of the perforation results in a lighter and cheaper design, but yielding a lower heat loss. However, heat transfer from unit mass is still enhanced.
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