Improving the platinum (Pt) mass activity for the oxygen reduction reaction (ORR) should optimize both the specific activity and the electrochemical active surface area (ECSA). We show that solution-synthesized Pt/NiO core/shell nanowires can be readily converted into PtNi alloy nanowires through a post-synthesis thermal annealing process, and then transformed into jagged Pt nanowires via an el...

The aim of the present work was to study the effect of various process parameters i.e. current, voltage, travel speed, electrode diameter, flux composition, pre heating of workpiece, electrode stick-out and edge including angle on changes in tensile strength and toughness of the weld bead geometry of HSLA Steel and to optimize the process so that minimal changes occur in the material properties...

The basic properties of the near-Earth current sheet from 8 RE to 12 RE were determined based on Time History of Events and Macroscale Interactions during Substorms (THEMIS) observations from 2007 to 2013. Ampere's law was used to estimate the current density when the locations of two spacecraft were suitable for the calculation. A total of 3838 current density observations were obtained to stu...

Motor agitator alat yang digunakan untuk mengkonversi suatu energi listrik menjadi mekanik. Alat ini dapat diatur dengan kontrol sistem yaitu inverter agar mengaduk dalam keadaan rpm tinggi maupun rendah. Pada saat proses mixing bahan mengalami kenaikan ampere 5.5 Ampere. Tujuan dari penelitian adalah menganalisis kerusakan terjadi pada motor dan mengetahui diperlukan pengadukan baku kapasitas ...