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Trends in Applied Sciences Research
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- One Transducer Method for Quantifying Vibration Power Flow in Orthotropic Plates for Both General and Far-field Conditions
Frequency response function technique is used to quantify a vibration field in orthotropic plates considering both general-field and far-field conditions. If vibration field is stationary, one transducer technique using Frequency Response Function (FRF) is an alternative to conventional structural intensity measurements. It is free from finite difference and phase mismatch errors that occur during data acquisition. In this study, one-transducer technique using FRF is employed to formulate a structural intensity field in the frequency domain with and the usage of finite difference approximation. As a result, one transducer may be employed sequentially to quantify the vibration fields. - A Research on the Spontaneous Combustion Tendency of Turkish Coals-Ilgin Lignite`s Case
The phenomenon of spontaneous combustion in coal mines has been given a great attention by scientists and miners as it may cause serious problems both from safety aspect and on economic grounds if not prevented or controlled on time. In order to achieve an accomplishment at all collieries where spontaneous combustion occur, there is a substantial need for careful judgement in planning, constant alertness and prompt positive action. In this study, the results of the earlier research carried out to search the liability of Turkish coals to spontaneous heating are presented. Additionally, as the objective of the present study, the coal samples from Ilgin District in Turkey were investigated in terms of propensity of spontaneous combustion by utilising the crossing point method. - Electrochemical Properties of Cathode Materials LiNiO2 and LiNi1-yMyO2 (M = Zn2+, Al3+ and Ti4+)
LiNi1-yTiyO2 (y = 0.000, 0.012, 0.025, 0.050, 0.100 and 0.150) were synthesized by ball milling and the solid- state reaction method. The optimum condition to synthesize a cathode material LiNi0.975Ti0.025O2 is milling for 28 h and then preheating at 600°C for 16 h and finally calcining at 750°C for 30 h O2 stream. LiNi1-yTiyO2 (0