Recently, plasma spray has been received a large number of attentions for various type of applications due to the nature of the plasma plume and deposition structure. The plasma gas generated by the arc, consists of free electrons, ionized atoms, some neutral atoms, and undissociated diatomic molecules. The temperature of the core of the plasma jet may exceed up to 30,000 K. Gas velocity in the…
This reprint is comprised of eleven articles that are screened by our hard-working peer reviewers. It mainly focuses on the recent advances in electric motors and drives, to adapt to the ongoing trends of electrification in both transportation and industry. New structural motors, such as the axial flux machine and the multi-phase machine, are introduced because of their enhanced reliability for…
Cetak, pada periode modern awal, bisa membuat atau menghancurkan kekuasaan. Jilid ini membahas salah satu pertanyaan paling mendesak dan relevan dalam sejarah modern awal: bagaimana otoritas Eropa menggunakan media baru dengan potensi luar biasa?. Delapan belas kontributor mengembangkan perspektif baru tentang hubungan antara munculnya cetakan dan perubahan hubungan antara subjek dan penguasa d…
This paper systematically reviews the research progress in the field of the influence of air pollutants in the engine inlet on the accelerated wear of the elements of the association: piston, piston rings, cylinder liner (P-PR-CL), and plain bearing (journal–panel). It was shown at the outset that the primary component of air pollution is road dust
Internal combustion engines remain as the main propulsion system used for ground trans‐ portation, and the number of successful developments achieved in recent years is as varied as the new design concepts introduced
A fast paced changing world requires dynamic methods and robust theories to enable designers to deal with the changing product development landscape successfully and hence make a difference in an increasingly interconnected and interdependent world
A gyrotron is used in magnetically confined plasma experiments for heating, current drive, plasma stabilization and plasma diagnostics. This work presents the first design and construction of a multi-frequency / multi-purpose coaxial-cavity pre-prototype gyrotron operating at (136)/170/204 GHz with an output power of 2 MW. It is the first step towards operating frequencies up to 240 GHz using t…
Teks ini merupakan pengantar atau ulasan terhadap karya terakhir Karl J. Pelzer, seorang ahli geografi sosial yang meneliti sejarah dan dinamika sosial-ekonomi Sumatra Timur (East Sumatra), terutama dalam konteks perkembangan perkebunan kolonial dan dampak politiknya. Berikut inti atau ringkasannya: Inti Ringkasan Pelzer menggambarkan Sumatra Timur sebagai wilayah yang paling ekstrem dan repres…
Penelitian ini berawal pada tahun 1940 ketika Karl J. Pelzer secara tidak sengaja harus tinggal selama tujuh minggu di Medan, Sumatra Timur. Selama tinggal di sana, ia mengetahui adanya konflik agraria besar antara tiga pihak: 1. Para pengusaha perkebunan Barat, 2. Sultan-sultan Indonesia, dan 3. Pemerintah Hindia Belanda. Konflik ini berkaitan dengan hak atas tanah perkebunan yang disewa oleh …
Perjanjian Utrecht (1713), yang mengakhiri Perang Suksesi Spanyol, adalah tonggak sejarah global. Pertunjukan Perdamaian bertujuan untuk memikirkan kembali arti penting Perjanjian Utrecht dengan menjelajahi hubungan antara budaya dan politik. Terlalu lama, sejarawan budaya dan politik telah mempelajari hubungan internasional awal modern secara terpisah. Dengan mempelajari aspek politik serta bu…