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Zakaria, Zainal
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PENGANTAR EKONOMI MAKRO : PERSPEKTIF DAN ISU-ISU TERKINI Lutpi, Madidatul; Chakim Ramadhani, M. Luthfi; Azis, Abdul; Zakaria, Zainal; Sarpini
Merdeka Indonesia Jurnal International Vol 4 No 2 (2024): Vol 4 No 2 (2024): MIJI : Merdeka Indonesia Journal International
Publisher : Merdeka Indonesia Jurnal International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69796/miji.v4i2.204

Abstract

Artikel ini menawarkan penjelasan komprehensif mengenai makroekonomi, dengan menekankan sudut pandang dan permasalahan kontemporer yang berdampak pada perekonomian Indonesia. Makroekonomi adalah disiplin ilmu ekonomi yang mengkaji fenomena ekonomi agregat, termasuk pertumbuhan ekonomi, inflasi, pengangguran, dan kebijakan fiskal dan moneter. Saat ini, beberapa kekhawatiran seperti volatilitas perdagangan internasional, perubahan iklim, dan dampak epidemi COVID-19 telah mengubah dinamika perekonomian global. Esai ini berupaya menjelaskan prinsip-prinsip dasar makroekonomi dan mengkaji tantangan kontemporer yang relevan. Pendekatan ini bertujuan untuk menjelaskan bagaimana faktor-faktor ini mempengaruhi perekonomian dan kebijakan yang diterapkan oleh pemerintah di berbagai negara. Artikel ini menekankan pentingnya koordinasi kebijakan ekonomi antar negara dalam mengatasi permasalahan global, serta perlunya inovasi dan kemampuan beradaptasi dalam kebijakan ekonomi untuk menjamin pertumbuhan yang berkelanjutan dan adil.
The Effect of Air Injection for Formation of Radicals in Liquid Glow Discharge Plasma Electrolysis with K2SO4 Solution Harianingsih, Harianingsih; Rengga, Woro Dyah Pita; Kusumaningrum, Maharani; Imani, Nadya Alfa Cahaya; Saksono, Nelson; Zakaria, Zainal
Reaktor Volume 23 No.2 August 2023
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.23.2.37-43

Abstract

Glow discharge is part of the phenomenon of plasma formation on the electrode side in contact with the electrolyte solution and begins with an electrolysis reaction with direct electric current. In this research, 0.02 M K2SO4 electrolyte was used, the anode in the form of tungsten and stainless steel for the cathode in a direct current plasma electrolysis reactor. The phenomenon of plasma formation is explained using a strong current and voltage characteristic curve. There are three plasma formation zones: the ohmic zone, the transition zone and the glow discharge plasma zone. Air injection affects the formation of glow discharge plasma and radicals. Without the injection of air, radicals formed only •OH, •H and •O with emission intensities of 20012 a.u, 10121 a.u and 10245 a.u. Air injection 0.8 L men-1 produced radicals •OH, •N, •N2*, •N2+, •H and •O with emission intensities of 30863a.u, 20139 a.u, 28540 a.u, 18023 a.u, 12547 a.u and 49800 a.u. Many radicals are generated when the plasma reaches stability. The plasma is dominated by H2O ionization, and the plasma is more stable if formed in the gas phase. Other results from this research at 0 L men-1, 0.2 L men-1, 0.4 L men-1 and 0.8 L men-1 stable plasma were formed at 675 V, 660 V, 650 V and 650 V. The plasma that can be seen from the bright light, the injection of air accelerates the formation of a gas envelope to reduce energy.
Co-Authors Abdul Azis Chakim Ramadhani, M. Luthfi Harianingsih, Harianingsih Imani, Nadya Alfa Cahaya Lutpi, Madidatul Maharani Kusumaningrum Nelson Saksono Rengga, Woro Dyah Pita Sarpini