Bursa Teknik Üniversitesi Kurumsal Akademik Arşivi

DSpace@BTÜ, Bursa Teknik Üniversitesi tarafından doğrudan ve dolaylı olarak yayınlanan; kitap, makale, tez, bildiri, rapor, araştırma verisi gibi tüm akademik kaynakları uluslararası standartlarda dijital ortamda depolar, Üniversitenin akademik performansını izlemeye aracılık eder, kaynakları uzun süreli saklar ve telif haklarına uygun olarak Açık Erişime sunar.




 

Güncel Gönderiler

Öğe
Prediction of Rheological Parameters of Asphalt Binders with Artificial Neural Networks
(ISRES Publishing, 2021) Özdemir, Ahmet Münir; Yalçın, Erkut; Yılmaz, Mehmet
Recycling of industrial, agricultural etc. wastes is economically and environmentally important. In recent years, researchers was focused on the using wastes in structural materials. In this study, modified asphalt binders were obtained by adding 7 different ratios waste engine oil (2%, 4%, 6%, 8%, 10%, 12% and 14%), which released as a result of routine maintenance of automobiles, to the pure asphalt binder. Then, Dynamic Shear Rheometer (DSR) experiments were applied on pure and modified asphalt binders. The rheological properties of asphalt binders at different temperatures and frequencies (loading rates) were evaluated by performing the DSR Test at 4 different temperatures (40°C, 50°C, 60°C and 70°C) and 10 different frequencies (0.01-10Hz). Then, the obtained complex shear modulus and phase angle values were estimated with Artificial Neural Networks. The results showed that the addition of 2% waste mineral (engine) oil improved the elastic properties of the asphalt binder by increasing the complex shear modulus and decreasing the phase angle values. In addition, it was concluded that the rheological parameters of asphalt binders can be successfully obtained with Artificial Neural Networks, by estimating the results with low error rate and high accuracy.
Öğe
The effects of drying process on bioactive compounds of fruits and vegetables
(Nova Science Publishers, 2021) Yıldız, Gülçin; İzli, Gökçen
Many bioactive compounds consist of antioxidants, vitamins, carotenoids, flavonoids, and other phenolics that exist in fruits and vegetables in appreciable amounts. Bioactive compounds have different biological activities such as scavenging reactive oxygen species (ROS), inhibiting oxidation and microbial growth, and reducing the risk of chronic diseases such as cancers and cardiovascular disorders. However, they have low stability against environmental conditions. Therefore, the drying process emerged to decrease their sensitivity and present a target delivery system. Dried fruits and vegetables can be easily stored and transported at a relatively low cost. They have reduced packing costs, and their low moisture content delays microbial spoilage. This review provides an overview of recent findings on the effects of different drying techniques on major bioactive compounds of fruits and vegetables. In particular, changes in ascorbic acids, carotenoids, flavonoids, phenolic acids, total phenolics, and antioxidant capacities are discussed in detail.
Öğe
Structure Preserving Algorithm for the Logarithm of Symplectic Matrices
(Murat TOSUN, 2021) Arslan, Bahar
The current algorithms use either the full form or the Schur decomposition of the matrix in the inverse scaling and squaring method to compute the matrix logarithm. The inverse scaling and squaring method consists of two main calculations: taking a square root and evaluating the Padé approximants. In this work, we suggest using the structure preserving iteration as an alternative to Denman-Beavers iteration for taking a square root. Numerical experiments show that while using the structure preserving square root iteration in the inverse scaling and squaring method preserves the Hamiltonian structure of matrix logarithm, Denman-Beavers iteration and Schur decomposition cause a structure loss.
Öğe
Bioactive compounds and their importance
(Nova Science Publishers, 2021) Yıldız, Gülçin; İzli, Gökçen
Bioactive compounds are found in the natural environment and in food, and can act in the body to promote good health. As such, research on these compounds is valuable for optimizing human well-being. This book includes eleven chapters that explore various aspects of bioactive compounds. Chapter One provides an overview of recent findings on the effects of different drying techniques on major bioactive compounds of fruits and vegetables. Chapter Two evaluates the effects of different drying temperatures and cutting types on the total phenolic content and antioxidant capacity of red capia pepper during storage. Chapter Three gives an overview on the principal applications related to encapsulation of bioactive compounds from herbal extracts with special attention on the choice of encapsulation agent on the quality of final dry extract. Chapter Four focuses on the role of bioactive compounds present in agro-industrial byproducts, innovative feeds and biotechnologically processed derivatives on animal performance, the quality of the derived animal products, the livestock health status, and the associated environmental benefits. Chapter Five disseminates knowledge of traditional flora using discrete formulations treated for wound healing. Chapter Six highlights the biodiversity of plant sesquiterpenoids as well as their health effects, focusing mainly on modern health problems. Chapter Seven links the importance of phytochemicals in plants to bioactive compounds in the human diet. Chapter Eight describes the most relevant information on bioactive polysacchardies reported in tropical fruits and their relationship with potential beneficial health effects. Chapter Nine collects the significance of marine organisms in natural product research and the application of emerging drugs to this field. Chapter Ten examines the enrichment of eggs and meat with bioactive compounds. Finally, Chapter Eleven reviews the role of lycopene in improving health and highlights the most valuable natural sources of this molecule.
Öğe
An Implementation with Low Impact Development (LID) Techniques within the Scope of Sustainable Stormwater Management: An Example of Mass Housing Project
(Peter Lang Publishing Group, 2021) Müftüoğlu, Volkan; Perçin, Halim
Stormwater, which is tried to be rapidly collected from urban lands, is transferred to receiving waters in an uncontrolled manner, and this situation causes the receiving waters, and thus the entire water cycle to be negatively affected in terms of pollution, especially with the sediment and heavy metals carried by runoffs. Traditional stormwater management solutions in our cities are often inadequate in terms of size and capacity, and even fail to fully accomplish their purpose because of accumulated sediment and pollutants, as a result of excessive rainfall in a short amount of time due to global warming in recent years. On the other hand, sustainable stormwater management approaches, in which natural solutions are prioritized, aim to solve the stormwater problem at its source as much as possible and to store the water that will pass through the runoff or infiltrate it to groundwater. The widespread use of sustainable stormwater management solutions in our cities will provide rain harvesting, which can be a solution to water shortages due to drought, and will support traditional stormwater management solutions during excessive rainfalls. In this context, this study aims to propose appropriate stormwater solutions on a mass housing project with the lid approach one of sustainable stormwater management approaches, and to reveal the contribution of these solutions in stormwater management. It was concluded that the continuation of the sample area, which is managed with integrated management practices within the scope of lid approach, by preserving the pre-development hydrological conditions, is very important in terms of ensuring safer habitats and the sustainability of the waterstormwater cycle in the sample area.