Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Dertli, Enes(115)
- Kaya, Yunus(50)
- Ayata, Ümit(48)
- Şahin, Engin(48)
- İspirli, Hümeyra(46)
- Bayraktar, Bülent(42)
- Şenay, Volkan(41)
- Can, Zehra(39)
- Özen, Soner(37)
- Bayram, Sinan(35)
- Pat, Suat(35)
- Öztürk, Mesut(35)
- Ecem Bayram, Nesrin(34)
- Esmer, Yusuf(34)
- Battal, Fetullah(33)
- Artar, Musa(32)
- Öner, Erdal(32)
- Korkmaz, Şadan(31)
- Yilmaz, Mustafa Tahsin(31)
- Ertugrul, Mehmet(30)
- Mercan, Emin(30)
- Hasar, Ugur Cem(29)
- Kutlu, Naciye(28)
- Özdemir, Akın(27)
- Kul, Murat(26)
- Cuce, Erdem(25)
- Kamiloğlu, Aybike(25)
- Bayram, Ozkan(24)
- Sefali, Abdurrahman(24)
- Sert, Durmuş(24)
- Çolak, Murat(24)
- Ayazoglu, Rabil(22)
- Gıdık, Betül(22)
- Maden, Sedat(22)
- Ustabulut, Mete Yusuf(22)
- Uçurum, Metin(22)
- Akeren, Zahide(21)
- Dirican, Ebubekir(21)
- Kara, Yakup(21)
- Abdioglu, Murat(20)
Yayınlar
- MakaleAçık Erişim2019Scopus SJRQ1Non-linear rheological (LAOS) behavior of sourdough-based dough
Yildirim-Mavis, Cigdem; Yilmaz, Mustafa Tahsin; Dertli, Enes; Arici, Muhammet; Ozmen, Duygu
During processing, wheat dough is known to undergo large deformation led by mixing and fermentation processes. This deformation is much more pronounced when sourdough is used in the recipe of wheat dough whose gluten is considerably hydrolyzed during sourdough fermentation. This causes deeper effects on rheological properties and shelf life of bakery products. Traditional small amplitude oscillatory tests do not enable us to comprehend the viscoelasticity under large deformations. In this respect, large amplitude oscillatory shear (LAOS) tests are useful for accurate characterization of the non-linear mechanical response. This study, therefore, is undertaken to investigate the non-linear mechanical response of dough prepared with different amounts of sourdough (0, 10, 20 30 and 40%) in a strain values ranging from 0.005 to 200% (frequency at 10 rad/s). As a result, sourdough was determined to have considerable effects on the non-linear viscoelastic response of dough. Strain-stiffening and shear-thinning behaviors were considerably influenced by sourdough incorporation and the dough started to show strain-softening and lowered shear-thinning behavior after giving a peak around at 100% strain due to the onset of the breakdown of the gluten network and suspension of starch matrix as consequence of the metabolic activity of the starter culture (Lactobacillus brevis E25) used in the preparation of sourdough. The physicochemical (pH and TTA), microbiological properties (LAB count) and extensographic properties were also shown to support the LAOS results. LAOS tests could be effectively and clearly used to reveal the effect of processing conditions (sourdough content and deformation by large strain amplitude) on the non-linear mechanical response of wheat dough.
AtıfScopus49WoS46OpenAlex46
İncele - MakaleAçık Erişim2019Scopus SJRQ2Investigation of magnetic force properties between different PMGs and multi-seeded YBCO superconductors with different seed distances
Abdioglu, M.; Ozturk, K.; Guner, S.B.; Celik, S.; Kucukomeroglu, T.
The magnetic levitation force in vertical direction and guidance force in lateral direction should be increased for enhancing the loading capacity and stability of Maglev systems, respectively. In this study, we have produced multi‒seeded YBCO (YBa2Cu3O7) superconductors with two seeds and investigated the effect of seed distance on the vertical levitation force and lateral guidance force properties by using different permanent magnetic guideway (PMG) arrangements. Although there are studies in literature related to different distance, orientation and angle of seeds; there is no detailed study investigating the effect of seed distance on the vertical and lateral magnetic force properties of Maglev systems depending on different types of PMGs. In this study, after the sample fabrication, the optimum PMG arrangement were determined by using numerical simulation to obtain magnetic flux density distribution. It is determined that both maximum levitation and guidance force values firstly increased with increasing the seed distance from 0 to 4 mm and then related forces decreased with increasing the seed distance from 4 to 16 mm but still keep the higher force values than the sample with the seed distances of 0 mm. This situation is clarified as the increasing of the seed distance to an optimum value enhances both the levitation and guidance forces simultaneously and this is very important for levitation force applications because it causes to easy control of the Maglev system in vertical and lateral directions.
AtıfScopus4WoS4OpenAlex5İncele - MakaleAçık Erişim2019Scopus SJRQ2Determination of acceptable quality limit for casting of a356 aluminium alloy: Supplier’s quality index (SQI)
Erzi, Eray; Gürsoy, Özen; Yüksel, Çağlar; Colak, Murat; Dispinar, Derya
Aluminium and its alloys have been widely used in the automotive industry for some time and A356 is one of the most popular aluminium alloys today in the sector. It contains approximately 7 wt.% Si and 0.3 wt.% Mg. Due to the defects that may be present in the cast parts, expected mechanical properties may not be reached and this alloy may perform in service under its potential. In a low pressure die casting, several precautions have to be taken in order to produce high quality and defect-free castings. Temperature of casting and the schemical composition of the melt is recorded continuously. Die temperature, pressure levels and their durations are optimized; degassing and fluxing operations are performed. Yet, regardless of the precautions, there could still be rejected parts. It is becoming clear that a good quality raw material is one of the most underrated points of the industry and that the starting material has a great effect on the final product and it should be taken in to account more seriously. Therefore, regarding the first rule of Campbell’s 10 Rules of Casting, in this study, the quality of the starting material of supply chains for a wheel manufacturer was investigated. Chemical compositions were compared, fluidity tests, mechanical tests and bifilm indexes of these various sources and ingots were measured and a final quality index was proposed to create a reference for the quantification of quality of supplier’s ingots. This new index was compared with the rejection rates.
AtıfScopus40WoS33OpenAlex39İncele - MakaleAçık Erişim2019Scopus SJRQ3Infinitely many solutions for the stationary fractional p -Kirchhoff problems in RN
Akkoyunlu, Ebubekir; Ayazoglu, Rabil
In the present paper, we investigate the existence of multiple solutions for the nonhomogeneous fractional p-Kirchhoff equation M(∬R2N|u(x)-u(y)|p|x-y|N+psdxdy+∫RNV(x)|u|pdx)×((-Δ)psu+V(x)|u|p-2u)=f(x,u)inRN,where (-Δ)ps is the fractional p-Laplacian operator, 0 < s< 1 < p< ∞ with sp< N, M:R0+→R0+ is a nonnegative, continuous and increasing Kirchhoff function, the nonlinearity f: RN× R→ R is a Carathéodory function that obeys some conditions which will be stated later and V∈ C(RN, R+) is a non-negative potential function. We first establish the Bartsch–Pankov–Wang type compact embedding theorem for the fractional Sobolev spaces. Then multiplicity results are obtained by using the variational method, (S+) mapping theory and Krasnoselskii’s genus theory.
AtıfScopus4WoS4İncele - MakaleAçık Erişim2019Scopus SJRQ1Active vibration control of a blade element with uncertainty modeling in PZT actuator force
Sivrioglu, Selim; Bolat, Fevzi Cakmak; Erturk, Ercan
The aim of this research is to attenuate the vibrations of a blade structure with an attached piezoelectric actuator using robust multi-objective control. The force obtained from a piezoelectric patch loading has uncertainties due to the complicated shape (airfoil) of the blade element. A parameter-dependent model of the force equation is developed to understand the possible variation range of the actuation force. The modal analysis of the blade is performed to find vibration mode frequencies, and an aerodynamic load is generated experimentally to create steady-state vibration on the blade. A state-space model is obtained by considering certain vibration modes and the parameter-dependent part of the force in the input vector is taken outside of the plant model. The robust stability filter is modified with parameter dependency to have a cluster of the filter. Two different multi-objective controllers are designed with different design objectives. The designed controllers are implemented in experiments and performances of the controllers are compared using frequency and time domain responses. It is shown that the flexible blade vibrations are successfully suppressed with the proposed mixed norm robust controllers under the effect of steady-state aerodynamic disturbance with different air speeds. It is observed in experimental results that the performances of the H∞/H2 controller are better than the H2/H∞ controller.
AtıfScopus22WoS20OpenAlex20İncele - MakaleYalnız künye2019Scopus SJRQ2The relationship between the external magnetic field and K X-ray intensity ratios of immiscible MoxAg1-x alloys
Uğurlu, Mine; Alım, Bünyamin; Demir, Lütfü
Kβ/Kα intensity ratios were obtained for Molybdenum-Silver alloys produced in different concentration range in different magnetic fields. It was seen that these values without magnetic field were found slight different from each other for pure Mo, pure Ag, alloyed Mo and alloyed Ag. It was determined that Kβ/Kα intensity ratios change slightly by depending on alloying element composition and it was seen that Kβ/Kα intensity ratios of Mo and Ag are in the range of the literature valuesFurthermore, that these values have same direction with the changing of the magnetic field for all alloying composition may take us conclusion which alloys in different concentration may have same magnetic properties.
AtıfScopus3WoS2OpenAlex4İncele - MakaleYalnız künye2019Scopus SJRQ1Dynamic analyses of experimentally-updated FE model of historical masonry clock towers using site-specific seismic characteristics and scaling parameters according to the 2018 Turkey building earthquake code
Genç, Ali Fuat; Ergün, Mustafa; Günaydin, M.; Altunişik, Ahmet Can; Ateş, Şevket; Okur, Fatih Yesevi; Mosallam, Ayman S.
This paper presents a dynamic analysis considering site-specific seismic characteristics for a masonry clock tower located at the city of Çorum, Turkey according to the new Turkish earthquake code. Finite element model of the tower was modeled using ANSYS software in order to determine numerical dynamic characteristics of the structure such as natural frequencies and mode shapes. Non-destructive experimental measurements were performed to extract the experimental dynamic characteristics. Experimental results were used as a reference parameter for finite element model updating to reflect the current structural behavior of clock tower. Model updating procedure was carried out by changing of initial material properties of structural stone elements, and maximum differences were reduced from 23.44% to 4.90%. Numerical results indicated that displacements have an increasing trend with the height of the clock tower. Furthermore, the maximum displacements occurred at the top point between the values of 18.88 mm to 42.5 mm. Numerical results also showed that both the maximum and minimum principal stresses occurred at the upper body (clock zone) walls and transition segment between the values of 1.08 MPa/2.86 MPa and − 0.87 MPa/−3.00 MPa, respectively. The maximum and minimum principal strains occurred at the upper body (clock zone) walls between the values of 0.65E-3/1.56E-3 and − 0.78E-3/−1.50E-3, respectively. It is also concluded that non-destructive experimental measurement is very useful method to evaluate in-situ structural identification, validate and update the initial finite element model for further analyses.
AtıfScopus46WoS43OpenAlex51İncele - MakaleYalnız künye2019Scopus SJRQ1A novel perspective for Lactobacillus reuteri: Nanoencapsulation to obtain functional fish fillets
Ceylan, Z.; Uslu, Emin; İspirli, Hümeyra; Meral, Raciye; Gavgalı, Mehmet; 'Yilmaz, Mustafa Tahsin; Dertli, Enes
Enrichment of food products with beneficial Lactic Acid Bacteria (LAB) is an important methodology used to develop functional food products. Lactobacillus reuteri E81 was successfully nanoencapsulated into poly (vinyl alcohol)-based nanofibers for its application to the surface of fish fillets. The Scanning Electron Microscopy analysis confirmed the nanoencapsulation of L. reuteri E81 in electrospun nanofibers (LRNF) that had an average diameter of 381.83 ± 130.69 nm. LAB growth in rainbow trout fillets and fatty fish (mackerel) and were found to be 2.92 and in the range of 3.27 and 2.66 log CFU/g, respectively. Importantly, the antioxidative characteristics of fish fillets significantly increased following their coating with LRNF. The results revealed a significant increase in the inhibition of free radicals in the samples treated with nanoencapsulated L. reuteri as compared to control group fish fillet samples. DPPH activity significantly increased to 40.24%, 44.96%, 44.97 in mackerel samples treated with nanoencapsulated L. reuteri (MLR) and increased to 19.76%, 20.87%, 21.46% in rainbow samples treated with nanoencapsulated L. reuteri (RLR). MLR samples exhibited the highest ABTS radical-scavenging activity (1631 μmol TEAC/g). FRAP value of MLR samples was found to be 1.70 times higher than the control group samples.
AtıfScopus50WoS37OpenAlex45İncele - MakaleYalnız künye2019Scopus SJRQ1A study on 3D graphene synthesized directly on Glass/FTO substrates: Its Raman mapping and optical properties
Bayram, Ozkan
In this study, vertically oriented (3D) graphene nanostructures (VGN) were obtained on Glass and Fluorine doped tin oxide (FTO) substrates at relatively low temperatures (approaximatelly at 400 °C) by using plasma enhanced chemical vapor deposition (PECVD) technique. VGNs were characterized using Raman, Uv–Vis and SEM spectroscopies, respectively. Raman spectroscopy showed that growth temperature significantly affected VGN formation and film quality. The layer structures of these VGNs were also confirmed by Raman mapping. The most important data obtained from this study is that although the applied radio frequency (RF) power is the same, the growth temperature significantly affects the graphene formation and morphologies. This was attributed to the fact that CH4 decomposition was very difficult at low temperatures. The optical transmittance of VGNs ranged from 50% to 95% (at 550 nm wavelength) and their electrical conductivity was also determined to be between 5.94 kohm/sqr and 11.2 kohm/sqr. The electrical and optical properties of VGNs, which have a large surface area, indicated that they may be an alternative material for sensor, solar cell and supercapacitor applications.
AtıfScopus19WoS18OpenAlex20İncele - MakaleAçık Erişim2019Scopus SJRQ1Inhibition of growth of U87MG human glioblastoma cells by Usnea longissima Ach.
Emsen, Bugrahan; Ozdemir, Ozlem; Engin, Tubanur; Togar, Basak; Cavusoglu, Seyda; Turkez, Hasan
Herbal medicines are efficient to reduce side effects in the fight against glioblastoma, which plays a critical role within brain cancer species. The recent studies designated for testing the effects of lichens that have shown numerous anticancer activities on glioblastoma so far. In the present study, different concentrations of water extract obtained from Usnea longissima Ach. were used in order to determine cytotoxic (via 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and lactate dehydrogenase tests), antioxidant (via total antioxidant capacity test), pro-oxidant (via total oxidant status test) and genotoxic (via 8-hydroxy-2'-deoxyguanosine test) effects of them on human U87MG-glioblastoma cancer cell lines. Primary mixed glial-neuronal non-cancerous cells from Sprague-Dawley rats were also utilized to measure the effects of treatments on non-cancerous cells. Based on median inhibitory concentration values, the data belonged to non-cancerous cells (2486.71 mg/L) showed distinct towering compared to U87MG (80.93 mg/L) cells. The viability of non-cancerous and U87MG cells exposed to extract is decreased in a dose dependent manner. It was also showed that low concentrations of extract notably increased total antioxidant capacity on non-cancerous cells. In addition, various phenolic compounds in extract were detected through high-perfonnance liquid chromatography. The recent results encourage that extract will be able to have therapeutic potential against glioblastoma.
AtıfScopus23WoS20OpenAlex21
İncele - MakaleYayıncıda açık erişim2018Acute Effect of Extreme Sports on Serum Lipids
Agirbas, O; Aggon, E; Hackney, AC
- MakaleAçık Erişim2018Yağlık Ayçiçeği Çeşitlerinde Oluşan Kuş Zararı Miktarları ve Verime Etkileri
Gül, Volkan; Polat, Taşkın; Öztürk, Erdoğan
Dünya genelinde kuşların tarımsal alanlara vermiş olduğu zarar, çiftçiler açısından önemli ekonomik kayıplara neden olmaktadır. Tarımsal amaçlı kullanılan arazilerde şehirleşme veya çevre düzenlemesi amacıyla yapılan ağaçlandırma, kuşlara ait doğal yaşam alanlarını arttırdığı için, bu arazilerde yetiştirilen ürünlerin kuş zararından etkilenme oranını da artırmaktadır. Özellikle kuşlar, ayçiçeği yetiştiriciliği yapılan arazilerde ayçiçeği tohumuna önemli derecede zarar veren canlılardır. Bu çalışmada, kontrollü ve kontrolsüz şartlarda yetiştirilen 10 farklı yağlık ayçiçeği çeşidinde (Pioneer63F73, Pioneerp64LL05, Pioneer64LC108, PioneerPR64G46, Coral, Golsun, Şems, Aga1301, Duna ve Bosfora) kuş zararının tespiti ve bu zararın tane verimine olan etkisi belirlenmeye çalışılmıştır. Çalışma sonunda; kuş zararı en fazla %51.19’luk oranla Pioneer64LC108 çeşidinde belirlenmiş, en düşük kuş zararı ise Bosfora ve Şems çeşitlerinde sırasıyla %9.94 ve % 11.7 olmuştur. Tüm çeşitlerin ortalaması olarak kuş zararı tane veriminde yaklaşık olarak %35.1 oranında bir azalmaya neden olmuştur. Mevcut içerisinde, erkenci, tabla yapısı eğik ve iç bükey olan Bosfora ve Şems çeşitlerinin kuş zararından daha ez etkilendikleri ve verim kayıplarının daha düşük olduğu tespit edilmiştir.
AtıfOpenAlex1TR Dizin1
İncele - MakaleYalnız künye2018İyi Bir Eğitim Ortamı İçin Yedi İlke ve Modellerle Desteklenen İşbirlikli Öğrenme Yöntemlerinin Akademik Başarıya Etkisi
Doymuş, Kemal; Öztürk, Bilge
Bu araştırmanın amacı; iyi bir eğitim ortamı için yedi ilke ile desteklenen, işbirlikli öğrenme yöntemlerinden Okuma-Yazma-Uygulama (OYU), Öğrenci Takımları-Başarı Bölümleri (ÖTBB) ve modellerle birlikte uygulanan OYU’nun fen bilgisi öğretmenliği lisans programının birinci sınıfında öğrenim gören öğrencilerin maddenin tanecikli yapısını anlamalarına yönelik etkisini belirlemektir. Araştırmada, nicel araştırma desenlerinden biri olan yarı-deneysel yöntem kullanılmıştır. Araştırmanın örneklemini Atatürk Üniversitesi Kazım Karabekir Eğitim Fakültesi Fen Bilgisi Öğretmenliği Lisans Programı’nın birinci sınıfında öğrenim gören 115 öğrenci oluşturmaktadır. Araştırmada veri toplamak amacıyla Ön Bilgi Testi (ÖBT) ve Akademik Başarı Testi (ABT) kullanılmıştır. Verilerin analizinde tanımlayıcı istatistiklerden faydalanılmış ve anlamlılık analizi için tek yönlü varyans analizi (ANOVA) kullanılmıştır. Araştırmada tüm deney gruplarının akademik başarılarının kontrol grubuna göre yüksek olduğu belirlenirken (p<0.05), deney grupları arasında da modellerle birlikte uygulamanın yapıldığı OYU grubunun, yalnızca OYU’nun uygulandığı gruba göre daha başarılı olduğu belirlenmiştir (p<0.05).
AtıfTR Dizin3İncele - MakaleYalnız künye2018Positive and Negative Ageism Scale (PNAS) A Validity and Reliability Study
Sarikoca, Erem; Yurttaş, Süleyman
The aim of this study is to develop a scale to determine the attitudes of university students towards elderly people. 31 expressions were formed to cover all dimensions of the old discrimination. 400 university students participated in this study. In the analysis of the data, AFA and DFA were used. Cronbach's alpha coefficients were calculated to provide information on the reliability of the scale. With the AFA analysis, the items with the factor load values lower than 0.32 were tried to be scaled and 8 items were subtracted from the scale. For the validity of the scale, DFA was performed and a two-factor scale was obtained. According to the findings obtained from the analysis; RMSEA 0.062, NNFI 0.90 and CFI 0.91. These values showed good agreement between the sub-factors and the scale. According to the general Cronbach Alpha coefficient (0.801), it can be proposed that the scale is quite reliable.
AtıfTR Dizin5İncele - MakaleYalnız künye2018Purıfıcatıon of protease enzyme from çiğdem (crocus bıflorus) tubers and ınvestıgatıon of usabılıty of the purıfıed protease enzyme ın coagulatıon of caseın
Çelik, Safinur Yıldırım
It is known that in some diseases (SARS, mad cow, pig and bird flu) that have passed from animals to humans have increased in recent years. In consumers, the use of animal proteases in the production of food products leads to concerns about the spread of these diseases. For these reasons, it has been an increase in demand for the product obtained from plant sources. The fact that only a small proportion of commercially available enzymes are herbaceous, have encouraged researchers to search for new herbal protease sources that can be used commercially. In this study, for the first time protease enzyme was purified from the tubers of a Crocus biflorus and characterized. The protease enzyme was purified 86 fold by ammonium sulfate precipitation and ion exchange chromatography. Optimum pH and temperature was found as 5.5 and 50 °C. The values of Vmax and KM were calculated as 47 mg/mL.min and 0.9 g/L, respectively. The molecular weight of the enzyme was calculated to be 35 kDa by using SDS-PAGE. It was determined that the purified enzyme can be used in the process of casein coagulation, the first step of cheese making
AtıfTR Dizin1İncele - MakaleYalnız künye2018Ekonofizik yaklaşımı ile kentsel rekabetçilik indeksinin oluşturulması
Dönmez, Cem Çağrı; Atalan, Abdulkadir
Kentsel ekonomi problemlerinin analizi için birçok ekonomik metotlar kullanılmıştır. Ancak günümüzde daha farklı bir yaklaşım olan ekonofizik metodu ile fiziğin temellerini oluşturan yasaların ekonomide de geçerli olacağı, yapılan bilimsel araştırmalar sonucu somut bir şekilde ortaya konulmuştur. Kentsel rekabetçilik için önemli olan parametreler dikkate alınarak kentsel rekabetçilik indeksi oluşturulmuştur. Ancak bu parametreler arasında yer alan kent popülasyon yoğunluğunun kent ekonomisinde ve buna bağlı olarak kentsel rekabetçilik indeksinde etkili olmadığı görülmektedir. Bu çalışmada, ekonofizik yaklaşımı ile oluşturulan kentsel rekabetçilik indekslerinin kent ekonomilerinde olan belirsizliğin ve dengesizliğin giderilmesi amaçlanmış olup, ekonofiziğin kuramlarından olan istatistiksel fizik yöntemiyle sayısal veriler kullanılarak kent ekonomisinde gelecek dönemler için somut bir sonuç elde edilmiştir. Kentlerin ekonomisinde belirsizliğin ve dengesizliğin azalmasıyla, diğer kentler ile rekabette daha güçlü olacakları bu çalışma ile ortaya konulmuştur
AtıfTR Dizin1İncele - MakaleYalnız künye2018Which product category has the largest effect on consumers’ retail store choices? lead product approach
Başar, Enes Emre
The presence of a large number of actors in the retail sector in recent years has led to intense competition. For this reason, it is increasingly important to determine the factors that affect retailer store preferences of consumers. In this direction, it is seen that a lot of studies have been done in the field of marketing. It has been generally focused that in these studies, low price, distance / location, store atmosphere and image, product variety and quality. These studies, however, have not revealed how the products consumers are planning to purchase have an effect on retailer store preferences. The lead product concept expresses which product categories are important in the retail store preference and explains consumer purchasing processes, thus providing a different perspective on retailer store preference. In this respect, the current study has tried to determine which product category is the lead product and examined the effects of lead product retailer's store preference. Thus, it is aimed to fill an important gap in the literature. In the scope of the research, the obtained data via the survey method from 444 consumers aged 18 years and living in the central district of Erzurum were analyzed. Findings show that fruit-vegetable product category is the lead product due to it has the greatest influence on consumers' retail store preferences
AtıfTR Dizin2İncele - MakaleYalnız künye2018Investigation of effectiveness of deposits bank of turkey with data envelopment analysis
Oktay, Erkan; Akyol Özcan, Kübra
Effective banking industry operations which have an important place in the financial system, is very important for the development of the country's economy. Although the economic crisis in 2000 had affected the Turkish banking sector, , it has a strong structure today, thanks to regulatory measures from the Turkish government. This study deals with the effectiveness of the Turkish banking sector. We compared and analyzed the data for the period 2012-2016. In the study the effectiveness of a total of 23 deposit banks were measured by the input-oriented Data Envelopment Analysis (DEA) method under the fixed return (CCR) and variable return on scale (BCC) assumptions. This study finds two public, two private, and and seven foreign capital banks were effective
AtıfTR Dizin4İncele - MakaleYalnız künye2018Investigation of Reuse by Recycling Asphalt Pavements in Hot Mix Asphalt
Yilmaz, Bahadir; Oruç, Seref; Mazlum, Mehmet Salih
In many countries of the world, waste management becomes compulsive with activation of laws and agreements about waste control. By this purpose, it becomes necessary and imperative to use waste asphalt materials as raw material for the new asphalt pavement due to economic advantages of using old materials, decreasing of the raw material’s potential, and problems of researching new asphalt raw mines and increasing of the asphalt pavement cost. Within this scope, this work has started to a research of re-used old materials which are completed their economic life on the road in the hot bituminous mixes. In this work, recycling methods that are used in World and Turkey are analyzed at the beginning and the advantages of recycling are utilized. İstanbul region is chosen as the working area and materials are gained by the roads that completed their economic life in İstanbul. By these materials, new coverable mix materials had produced in different ratios such as10%,25% and40%. Marshall Experiment had used to these mixtures, intensity and void analyses are made and the results that obtained from experiments are compared with the pure materials and the core samplers
AtıfTR Dizin7İncele - MakaleAçık Erişim2018Monofloral ve Multifloral Bal Numunelerinin Bazı Kalite Kriterlerinin Belirlenmesi
Bayram, Nesrin Ecem; Demirkol, Esra
Bu çalışmada özellikle balın saflığını ve orijinlerini ayırt etme noktasında kullanılan iki önemli yöntem ile farklı orijinlerden bal örneklerinin incelenmesi amaçlanmıştır. Bu amaçla Türkiye’nin dört farklı bölgesinden (Erzurum, Giresun, Hakkari, Rize) elde edilen bal örneklerinin prolin analizi ve melissopalinolojik analizleri gerçekleştirilmiştir. Örneklerin melissopalinolojik analizleri ışık mikroskobu aracılığıyla yapılmıştır. Prolin analizleri ise, spektrofometrik yöntem kullanılarak yürütülmüştür. Melissopalinolojik analizler sonucunda monofloral ve multifloral çiçek balı örneklerine rastlanılmıştır. Bal örneklerinin prolin oranları 503.46 mg/kg-696.09 mg/ kg arasında değişkenlik göstermiştir. Sonuç olarak, melissopalinolojik analizler neticesinde kestane balı olduğu tespit edilen bal örneklerinin prolin içeriğinin genellikle daha düşük olduğu tespit edilmiştir.
AtıfOpenAlex12TR Dizin6İncele