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CuAlOdos thin films are prepared on Si or sapphire substrate by sol-gel method using two kinds of sols. In the case of acetate sol, XRD peaks of CuAlO2 observed at annealing temperature of 800-950 ?C on both Si and sapphire substrates. In contrast, in the case of the films prepared using nitrate on Si substrate, XRD peaks of CuAlO2 have been observed only at the annealing temperature of 800-850 ?C. At annealing temperature of 850?C, peaks of other species have been observed beside the CuAlO2 peaks, then, the CuAlO2 peaks disappeared at annealing temperature of 900 °C with increasing in intensity of the other peaks. Intensity of the other peaks decreased at annealing temperature of 950 ?C with appearance of broad SiO2 peak. In the present, we ascribe these peaks as metal silicide.
115 Brand new Connections between Spatial Framework and you will Residential property Speed
Land speed provides the total qualities out-of urban room, representing the personal and you may economic features of the metropolis. Correctly, residential property rates can be utilized once the a sign, that can pick the alterations from spatial build and socioeconomic variations considering metropolitan invention. This research made an effort to mention the changes inside land price of the another type of street construction. Methodologically, they implemented Place Syntax, that may translate urban spatial build adequately, to recognize the connection within different highway systems and belongings speed. The consequence of this new regression study shown the latest ‘consolidation list off Place Sentence structure is statistically significant and contains a strong relationship which have residential property rates. In the event your integration value was higher, property rate grows proportionally. Next, having fun with regression equation, they attempted to anticipate the latest land speed alter each and every off the fresh lots nearby brand new roads which might be freshly open. The research measures or data performance have the benefit of forecasting the changes in residential property rates when you look at the a good way. On the other hand, it will subscribe planners and endeavor managers to ascertain related polices and you will smoothing urban regeneration projects thanks to enhancing customers understanding by the getting you’ll be able to performance and you may pros inside their belongings price before the performance out of urban regeneration and you can invention projects.
114 Plasma Attributes Affect Fluorescent Tube Plasma Antenna Abilities
So it paper presents the study with the show regarding monopole antenna which have neon tubes. Within lookup, the brand new simulation and you may experimental means is carried out. This new fluorescent pipe with assorted duration and dimensions are designed using Desktop Simulator Technical (CST) app in addition to qualities of antenna factor is artificial throughout the app. CST was used to help you replicate antenna details such as for instance return loss, resonant frequency, gain and directivity. Vector Network Analyzer (VNA) was applied to measure the fresh new return loss of plasma antenna when you look at the buy to help you validate the new simulator show. From the simulator and you may experiment, the production regularity is determined which range from step 1 Ghz in order to 10 Gigahertz. The results reveal that new come back death of plasma antenna change when size of neon tubes is ranged, match various plasma characteristics. It shows that additional beliefs out-of plasma attributes including plasma volume and you can collision frequency gets variation consequence of return losings, get and directivity. Into the gain, the costs are normally taken for 2.14 dB so you’re able to 2.thirty-six dB. The fresh new return loss of plasma antenna also offers highest worthy of include – dB so you’re able to – dB. The higher the values of plasma regularity and you can collision volume, the greater get back loss is obtainable. The costs received was comparative with the traditional sort of metal antenna.
113 Thermal Conductivity from Al2O3/Water-Depending Nanofluids: Revisiting the fresh new Influences from pH and you can Surfactant
The present work focuses on the preparation and the stabilization of Al2O3-water based nanofluids. Though they have been widely considered in the past, to the best of our knowledge, there is no clear consensus about a proper way to prepare and stabilize them by the appropriate surfactant. In this paper, a careful experimental investigation is performed to quantify the combined influence of pH and the surfactant on the stability of Al2O3-water based nanofluids. Two volume concentrations of nanoparticles and three nanoparticle sizes have been considered. The good preparation and stability of these nanofluids are evaluated through thermal conductivity measurements. The results show that the optimum value for the thermal conductivity is obtained mainly by controlling the pH of the mixture and surfactants are not necessary to stabilize the solution.
