The La-Mg-Ni-Co-Al-based AB2-type La0.8-xCe0.2YxMgNi3.4Co0.4Al0.1(x=0,0.05,0.1,0.15,0.2)alloys were prepared via melt spinning.The analyses of the X-ray diffraction(XRD)and scanning electron microscopy(SEM)proved that...The La-Mg-Ni-Co-Al-based AB2-type La0.8-xCe0.2YxMgNi3.4Co0.4Al0.1(x=0,0.05,0.1,0.15,0.2)alloys were prepared via melt spinning.The analyses of the X-ray diffraction(XRD)and scanning electron microscopy(SEM)proved that the experimental alloys contain the main phase LaMgNi4 and the second phase LaNi5.Increasing Y content and spinning rate lead to grain refinement and obvious change of the phase abundance without changing phase composition.Y substitution for La and melt spinning make the life-span of the alloys improved remarkably,which is attributed to the improvement of anti-oxidation,anti-pulverization and anti-corrosion abilities.In addition,the discharge capacity visibly decreases with increasing the Y content,while it firstly increases and then decreases with increasing spinning rate.The electrochemical kinetics increases to the optimum performance and then reduces with increasing spinning rate.Moreover,all the alloys achieve to the highest discharge capacities just at the initial cycle without activation.展开更多
Signalized intersections are widely used in today＇s cities where the traffic flows from various directions and the pedestrians have right to pass one by one. In this study, two of the intersections in Konya were inve...Signalized intersections are widely used in today＇s cities where the traffic flows from various directions and the pedestrians have right to pass one by one. In this study, two of the intersections in Konya were investigated, Kule and Nalgacl-Sille signalized intersections. The intersections are important in terms of urban traffic. New cycle times were proposed with the aim to minimize delays and to increase the capacities and level of services in these intersections. The intersections were examined using Sidra Intersection 5.1 software based on the Australian methods. Also, signalization calculations can be made according to the American HCM （Highway Capacity Manual） methods by using the same software. The intersection analyses were performed using both methods based on the current cycle times and optimum cycle times proposed by the methods. The obtained analytical results were compared and some solutions were suggested. After analysis, the obtained values using the Australian and American methods were observed to be close. Additionally, the decrease in the delays and the increase in the capacities at the intersections were generally observed as a result of the proposed cycle times.展开更多
In order to improve the service life of solar street lamp, it is necessary to manage the lamp＇s battery in the form of on-line detection via wireless communanication. A wireless managonent systean for solar street la...In order to improve the service life of solar street lamp, it is necessary to manage the lamp＇s battery in the form of on-line detection via wireless communanication. A wireless managonent systean for solar street lamp based on nanoLOC AVR nttlule is researched in this paper, the system can real-timely detect the solar street lamp＇s battery voltage, corrent, tonperature, internal resistance, residual capacity and so on. And the collected data is transmitted to computer＇ s management via wireless connnunication to achieve recording, storage, analysis and processing for various parameters.展开更多
基金Projects(51761032,51471054)supported by the National Natural Science Foundation of ChinaProject(2015MS0558)supported by the Natural Science Foundation of Inner Mongolia,China
文摘The La-Mg-Ni-Co-Al-based AB2-type La0.8-xCe0.2YxMgNi3.4Co0.4Al0.1(x=0,0.05,0.1,0.15,0.2)alloys were prepared via melt spinning.The analyses of the X-ray diffraction(XRD)and scanning electron microscopy(SEM)proved that the experimental alloys contain the main phase LaMgNi4 and the second phase LaNi5.Increasing Y content and spinning rate lead to grain refinement and obvious change of the phase abundance without changing phase composition.Y substitution for La and melt spinning make the life-span of the alloys improved remarkably,which is attributed to the improvement of anti-oxidation,anti-pulverization and anti-corrosion abilities.In addition,the discharge capacity visibly decreases with increasing the Y content,while it firstly increases and then decreases with increasing spinning rate.The electrochemical kinetics increases to the optimum performance and then reduces with increasing spinning rate.Moreover,all the alloys achieve to the highest discharge capacities just at the initial cycle without activation.
文摘Signalized intersections are widely used in today＇s cities where the traffic flows from various directions and the pedestrians have right to pass one by one. In this study, two of the intersections in Konya were investigated, Kule and Nalgacl-Sille signalized intersections. The intersections are important in terms of urban traffic. New cycle times were proposed with the aim to minimize delays and to increase the capacities and level of services in these intersections. The intersections were examined using Sidra Intersection 5.1 software based on the Australian methods. Also, signalization calculations can be made according to the American HCM （Highway Capacity Manual） methods by using the same software. The intersection analyses were performed using both methods based on the current cycle times and optimum cycle times proposed by the methods. The obtained analytical results were compared and some solutions were suggested. After analysis, the obtained values using the Australian and American methods were observed to be close. Additionally, the decrease in the delays and the increase in the capacities at the intersections were generally observed as a result of the proposed cycle times.
文摘In order to improve the service life of solar street lamp, it is necessary to manage the lamp＇s battery in the form of on-line detection via wireless communanication. A wireless managonent systean for solar street lamp based on nanoLOC AVR nttlule is researched in this paper, the system can real-timely detect the solar street lamp＇s battery voltage, corrent, tonperature, internal resistance, residual capacity and so on. And the collected data is transmitted to computer＇ s management via wireless connnunication to achieve recording, storage, analysis and processing for various parameters.
