Activity-composition relations in MnCr O -CoCr O solid solutions and stabilities of MnCr O and CoCr O

Koç, Nurşen


Posting Patterns of Students' Social Presence, Cognitive Presence, and Teaching Presence in Online Learning
Kilis, Selcan; Yıldırım, Zahide (2019-06-01)
Using the Community of Inquiry framework, this case study probes the posting patterns of students' social presence, cognitive presence, and teaching presence in an online learning setting. Using purposive sampling, qualitative data were collected from 91 students in the Department of Medical Documentary and Secretary, a fully online associate degree program at a well-known public university. Students participated in six online asynchronous discussion activities on Moodle. The data were analyzed through desc...
Marching distance functions for smooth control of hyperbolic grids
Durmus, G; Kavsaoglu, MS (2000-10-01)
The smooth control of hyperbolic grids is achieved by using marching distance functions. The marching distance can be expressed as a function of grid control. The derivative expressions of the linearized hyperbolic equations are approximated by second order central differences.
EFL instructors’ perceptions about teaching, social, and cognitive presences in online EFL classes after the outbreak of the COVID-19
Sütcü, Halime Feyza; Savaş, Perihan; Department of English Language Teaching (2021-8)
The current study aimed to investigate the EFL instructors’ perceptions about teaching, social, and cognitive presences in online classes after the outbreak of the COVID-19 pandemic within the CoI (Community of Inquiry) framework. Adopting a mixed methods design, the study had two basic tools, which are an online survey having a Likert Scale and online group interviews. In the first phase which was the quantitative stage, 72 EFL instructors participated and filled in the CoI questionnaire, which consists of...
Enzyme electrodes fabricated by dad type poly (2,5-di(furan-2-yl)thiazolo[5,4-d]thiazole) conducting polymer
Kurzama, Nadia; Söylemez, Saniye; Böyükbayram, Ayşe Elif; Toppare, Levent Kamil (2020-03-20)
Poly(2,5-di(furan-2-yl)thiazolo[5,4-d]thiazol) polymer was coated over a platinum electrode and new enzyme electrodeswere produced that are not found in the literature. The formation of polymerization was shown by cyclic voltammetry.Kinetic parameters of immobilized polyphenol oxidase enzyme were determined. Vmax and Km were obtained as 0.028 ±0.001 umol min1- electrode1- and 669.68 ± 64.73 mM respectively. The effect of reaction conditions over enzyme activitywere examined. The pH and temperature at which ...
Synthesizing germanium and silicon nanocrystals embedded in silicon dioxide by magnetron sputtering technique
Alagöz, Arif Sinan; Turan, Raşit; Department of Physics (2007)
Applications of semiconductor nanocrystal in electronics are promising. Various techniques were developed to synthesize and analyze semiconductor nanocrystals for integrated circuit applications. In this study, silicon and germanium nanocrystals were synthesized in silicon dioxide matrix by magnetron sputtering deposition and following high temperature furnace annealing. Multilayer and single layer samples were prepared by co-sputtering depositions. Transmission electron microscopy measurements were carried...
Citation Formats
N. Koç, “Activity-composition relations in MnCr O -CoCr O solid solutions and stabilities of MnCr O and CoCr O ,” Ph.D. - Doctoral Program, Middle East Technical University, 1993.