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All Journal JURNAL SAINS DAN TEKNOLOGI INDONESIA Journal of Tropical Soils Journal of Degraded and Mining Lands Management Majalah Ilmiah Pengkajian Industri
Rosjidi, Mochamad
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Education Engineering Environmental Science Industrial & Manufacturing Engineering Transportation

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Journal : Majalah Ilmiah Pengkajian Industri

 1 
ANODA PB DAN GEL ELEKTROLIT UNTUK PROPULSI KAPAL SELAM Saputra, Hens; Rosjidi, Mochamad; Ghofar, Abdul; Tandirerung, Murbantan; Ismail, Mochammad; Islam Nurwantoro, Dorit Bayu
Majalah Ilmiah Pengkajian Industri Vol 11, No 2 (2017): Majalah Ilmiah Pengkajian Industri
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/mipi.v11i2.946

Abstract

Battery is the most important component in the sub marine energy system. Up to now, majority of the sub marine are still using lead acid battery as the power source or propulsion, due to more safe in application as very high capacity of single cell (i.e. 10.000 ? 15.000 Ah). The drawbacks of aqueous based battery, which utilize liquid electrolyte, are because of having produced the hydrogen gas during charging process, in which it caused the electrolyte solution to become  dry and reduced the performance of battery. In addition that the hydrogen gas generated in the sub marine was dangerous. Therefore, the aim of  this research is how to reduce or eliminate of those drawbacks by modifying kind of the liquid electrolyte by using gel electrolyte. The gel electrolyte was synthesized to reduce the evaporation of electrolyte and to avoid the leaking when submarine maneuver.  The gel electrolyte  was made by using inorganic nanoporous MCM-41. It was synthesized by hydrothermal method, using Tetraethylortosilicate (TEOS) as silica sources, Cethyltrimethylammonium bromide (CTAB) as organic template and H2SO4 as catalyst. The MCM-41 lead acid battery gave a result of  OCV ca. 2,1 V.
INOVASI PUPUK CONTROLLED RELEASE FERTILIZER (CRF) UNTUK TANAMAN BAWANG MERAH Rosjidi, Mochamad; Saputra, Hens; Wahyudi, Imam; Setyorini, Dyah; Widowati, Ladiyani
Majalah Ilmiah Pengkajian Industri Vol. 12 No. 3 (2018): Majalah Ilmiah Pengkajian Industri
Publisher : Deputi TIRBR-BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (429.544 KB) | DOI: 10.29122/mipi.v12i3.2609

Abstract

Bawang merah merupakan salah satu komoditas pertanian yang menjadi perhatian pada saat ini untuk ditingkatkan produksinya dalam rangka mendukung program ketahanan pangan nasional. Upaya meningkatkan produksi pertanian membutuhkan dukungan pupuk yang sesuai dengan kaidah spesifikasi lokasi dan komoditas tanaman. Inovasi pupuk CRF yang dibuat dengan teknologi matrik dan biodegradable binder dapat meningkatkan panen sekitar 14% dibandingkan dengan penggunaan pupuk NPK biasa dan dapat menghemat pupuk hingga 50% serta cukup sekali pemupukan selama masa tanam. Pupuk CRF dapat mengendalikan pelepasan unsur nutrien dengan baik sesuai dengan hasil uji pelarutan dalam air. Zeolit alam yang digunakan merupakan campuran clinoptilolit dan mordenit. Bawang merah yang dihasilkan lebih baik dengan ukuran umbinya lebih besar dan warna merah cerah.
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Ghofar Akhmad Jufri Beti, Jajuk Aneka DEWI SAHARA Dyah Setyorini Dyah Tjahyandari Suryaningtyas Forita Dyah Arianti, Forita Dyah Handayani, Cicik Oktasari Hens Saputra Islam Nurwantoro, Dorit Bayu Ismail, Mochammad Jauhari Syamsiyah Maro'ah, Siti Mustafa, Anwar Suwardi Suwardi Tandirerung, Murbantan Triyani Dewi Widowati, Ladiyani Zu'amah, Hidayatuz