Manufacturing a new protective polyethylene based film containing zeolites for packaging of food

Dirim (Aktaş), Safiye Nur


Production of hexagonal boron nitride by carbothermic reduction of colemanite-boric oxide mixtures
Kahramansoy, Eylem; Sevinç, Naci; Department of Metallurgical and Materials Engineering (2011)
Carbothermic production of hexagonal BN by using boric acid and ground colemanite mined from Bigadiç Region in Turkey was investigated by subjecting pellets prepared from B2O3, activated carbon and colemanite mixtures to nitrogen gas at 1500°C. Similar to CaCO3 addition, colemanite addition to the B2O3-C mixtures resulted in higher amounts of h-BN in the final products. As a result of the experiments conducted with colemanite and CaCO3 additions providing the same quantity of CaO to the initial mixtures, si...
An algorithm to generate alternative train schedules on single track railroads
Bayırtepe, Hikmet; Akyılmaz, M. Özdemir; Department of Civil Engineering (1995)
A study on the stress-strain behavior of railroad ballast materials by use of parallel gradation technique
Kaya, Mustafa; Özkan, M. Yener; Department of Civil Engineering (2004)
The shear strength, elastic moduli and plastic strain characteristics of scaled-down ballast materials are investigated by use of the parallel gradation technique. Uniformly graded ballast materials chosen for the investigation are limestone, basalt and steel-slag. Steel-slag is a byproduct material of Eregli Iron and Steel Works, which is suitable to meet the durability test requirements as well as the electrical resistivity and the waste contaminants regulatory level. Conventional triaxial testing at a st...
Influential factors on faculty performance in distance education
Kara, Mehmet; Yıldırım, Zahide; Department of Computer Education and Instructional Technology (2018)
This study aimed to identify the performance deficiencies of the faculty in distance education and to design interventions for performance improvement with a systemic perspective. Based on this aim, the study was conducted within the framework of Externality-Tangibility model for performance improvement and Transactional Distance theory. Concurrent embedded mixed methods research design, in which both quantitative and qualitative data were collected from distance education administrators, faculty, students,...
Modeling of ground-borne vibration from underground railway systems
Albayrak, Ahmet; Çalışkan, Mehmet; Department of Mechanical Engineering (2012)
Ground-borne vibrations from railway systems not only pose threats to structural integrity of nearby buildings and cause annoyance on people but also contribute into environmental noise levels. It is of utmost importance to predict these vibrations at the design stage of such systems. This thesis attempts to reach this goal through finite elements analysis. Commercial software is used to develop a finite element model of an existing railway system. The model is based on the work of Forrest and Hunt [11]. It...
Citation Formats
S. N. Dirim (Aktaş), “Manufacturing a new protective polyethylene based film containing zeolites for packaging of food,” Ph.D. - Doctoral Program, Middle East Technical University, 2000.