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All Journal Jurnal Teknologi Bahan Nuklir Jurnal Rekayasa Infrastruktur Sipil Jurnal Riset Rumpun Ilmu Sosial, Politik dan Humaniora (JURRISH) Journal of Multidisciplinary Science: MIKAILALSYS
Sigit Sigit
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Materials Science & Nanotechnology Physics Social Sciences Transportation Other

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ANALISIS TERMAL GARAM CAMPURAN MgCl2-NaCl Sigit Sigit; Aslina Br. Ginting; Hendro Wahyono
Jurnal Teknologi Bahan Nuklir Vol 1, No 1 (2005): Januari, 2005
Publisher : PTBN - BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (259.22 KB)

Abstract

ABSTRAKANALISIS TERMAL GARAM CAMPURAN MgCl2-NaCl. Telah dilakukan analisis termal garam campuran MgCl2-NaCl pada berbagai konsentrasi NaCl sebagai salah satu garam penyusun dalam garam campuran tersebut dengan menggunakan alat Thermal Gravimetry-Differential Thermal Analysis (TG-DTA). Analisis ini bertujuan untuk mengetahui perubahan berat, temperatur peleburan dan fenomena lain yang terjadi pada proses pelelehannya. Data yang diperoleh diharapkan dapat digunakan sebagai acuan untuk daur ulang bahan nuklir dengan metode pirokimia / pelelehan garam campuran tersebut menggunakan tungku pemanas. Garam campuran MgCl2-NaCl dengan konsentrasi NaCl 30%, 50% dan 70% dianalisis menggunakan TG-DTA pada kisaran temperatur 30-600°C dengan laju pemanasan 5°C/menit, dan hasilnya kemudian dievaluasi. Hasil percobaan menunjukkan bahwa telah terjadi proses dehidrasi dan dekomposisi dari MgCl2.6H2O dan peleburan garam campuran MgCl2-NaCl. Untuk konsentrasi NaCl 30%, 50% dan 70%, pengurangan berat total masing-masing garam campuran tersebut adalah 38,63%, 27,74% dan 16,44%, sedangkan kisaran titik lebur adalah 429-460°C, 416-455°Cdan 415,69-446,08°C.KATA KUNCI: Analisis termal, Garam campuran MgCl2-NaCl,Daur ulang bahan nuklirABSTRACTTHERMAL ANALYSIS OF SALT MIXTURE MgCl2-NaCl. Thermal analysis of salt mixture MgCl2-NaCl of various concentrations of NaCl as one of the constituents of the salt mixture, has been carried out using Thermal Gravimetry-Differential Thermal Analysis (TG-DTA). The analysis is aimed to determine the weight change, melting temperature and other phenomena in the melting process. The data obtained will be used as references for nuclear fuel material recycling of the salt mixture by melting method in furnace. Salt mixture MgCl2-NaCl with concentrations of NaCl at 30wt%, 50wt% and 70wt% was analyzed using TG-DTA at a temperature range of 30-600°C and heating rate 5°C/min. The results of the experiments show that dehydration and decomposition of MgCl2.6H2O and melting of MgCl2-NaCl salt mixture have taken place. For the concentrations of NaCl at 30wt%, 50wt% and 70wt%, the total weight changes of the salt mixture are 38,63wt%, 27,74wt% and 16,44wt% respectively, while the melting temperature ranges are correspondingly 429-460°C, 416-455°C and 415,69-446,08°C.FREE TERMS: Thermal analysis, Salt mixture MgCl2-NaCl, Nuclear material recycle
STUDI PENGARUH DEBIT TERHADAP KESERAGAMAN IRIGASI TETES PADA VARIASI VISKOSITAS CAMPURAN AIR Sigit Sigit; Muhammad Amin; Arrizka Yanuar Adipradana
Jurnal Rekayasa Infrastruktur Sipil Vol 3, No 1 (2022): Jurnal Rekayasa Infrastruktur Sipil
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/jris.v3i1.4187

Abstract

Penelitian ini ditujukan untuk mengembangkan teknogi irigasi. Irigasi tetes merupakan salah satu teknologi tepat yang dapat diterapkan untuk mengatasi  permasalahan irigasi curah yaitu bertambahnya jam kerja, biaya tenaga kerja, pembusukan tanaman akibat genangan air, serta penyiraman yang tidak merata. Tujuan penelitian ini adalah mengetahui desain sistem irigasi tetes yang optimal dan mengetahui pengaruh debit terhadap keseragaman tetesan pada variasi viskositas.Pengujian ini menggunakan variasi jenis pupuk dengan viskositas yang berbeda yaitu viskositas campuran air dan POC sebesar 0,000315 Pa.s, campuran air dan NPK sebesar 0,000327 Pa.s, serta campuran air dan urea sebesar 0,000366 Pa.s. Berdasarkan perencanaan awal dengan kebutuhan air sebesar 250 ml, 10 g NPK, 10 g Urea, serta 10 ml pertanaman, maka ditentukan debit rencana sebesar 4,1666 ml/s.Campuran urea memerlukan pengaturan debit 90,95% debit rencana untuk mencapai  debit optimal. Campuran NPK memerlukan pengaturan debit 76,51 %. Campuran POC cukup memerlukan pengaturan debit 50,65% . Keseragaman terbaik pada campuran POC pengaturan katup 50% sebesar 86,05%.Koefisien variasi terbaik pada campuran POC pengaturan katup 50% sebesar 17,2. Sedangkan keseragaman statistik terbaik pada campuran POC pengaturan katup 50% sebesar 82,76 %.
Analisis Verzet Terhadap Putusan Verstek dalam Hukum Acara Perdata Fauziah Lubis; Tazkiya Asri Syam; Liza Fauzanti Sagala; Anggina Elsa Ritonga; Lusi Febriani; Sigit Sigit
Jurnal Riset Rumpun Ilmu Sosial, Politik dan Humaniora Vol. 4 No. 2 (2025): Jurnal Riset Rumpun Ilmu Sosial, Politik dan Humaniora
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrish.v4i2.5248

Abstract

This study aims to analyze the legal remedies for denial of default in the civil procedural law system in Indonesia. The main problem raised is how the denial mechanism can provide legal protection for defendants who are not present at the trial, and how the application of denial in judicial practice is related to the principle of fair and speedy trials. The background of this study is based on the phenomenon of many civil cases being decided by default due to the absence of the defendant, which then leads to the submission of denial as a means of protecting the defendant's rights. The research method used is normative juridical with a statutory approach and case studies. Data were obtained through a literature study of laws and regulations, court decisions, and relevant literature, and analyzed qualitatively. The results of the study indicate that denial is an important legal right for defendants to defend themselves against unilaterally imposed decisions. However, in practice, the implementation of denial is often hampered by administrative factors, the defendant's ignorance of their rights, and different interpretations by law enforcement officers regarding the deadline for submitting denial. Therefore, it is necessary to strengthen regulations and socialize the mechanism of verzet so that the principle of justice in the civil trial process can be realized optimally.
Efforts to Implement the International Regulations for Preventing Collisions at Sea (COLREGS) to Prevent Collisions on Board the SPB. Sainty Giant Sahrul Angga Saputra; Marthen Marthen; Sigit Sigit
Journal of Multidisciplinary Science: MIKAILALSYS Vol 4 No 2 (2026): Journal of Multidisciplinary Science: MIKAILALSYS
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/mikailalsys.v4i2.11086

Abstract

The implementation of the International Regulations for Preventing Collisions at Sea (COLREGs) 1972 is essential for ensuring navigational safety in Indonesia’s strategic waters, where dense international shipping traffic increases collision risks. Although COLREGs have been widely examined, studies specifically addressing watchkeeping responsibilities and navigational aid utilization on Self-Propelled Barges (SPB) in Indonesian crossing situations remain limited. This study aims to analyze the implementation of COLREGs in preventing collisions on SPB Sainty Giant, particularly during crossing situations. A descriptive qualitative approach with a case study design was employed, involving three informants consisting of the Chief Officer, Second Officer, and Able-Bodied Seaman, who were selected using purposive sampling. Data were collected through observation, in-depth interviews, and documentation studies, and were analyzed thematically through data reduction, data presentation, and conclusion drawing. The findings indicate that the implementation of COLREGs on SPB Sainty Giant remains suboptimal, as reflected in watchkeeping officers arriving exactly at the start of their watch without sufficient handover time, crew fatigue caused by excessive daytime workload, and inadequate radar adjustment to weather conditions, which resulted in small vessels remaining undetected. These findings highlight the importance of watchkeeping discipline, navigational aid optimization, and crew competency in strengthening collision prevention. This study contributes to maritime navigation and safety literature by extending understanding of COLREGs application in SPB operations. The practical implications emphasize the need for shipping companies and ship masters to improve watchkeeping procedures, provide regular Radar ARPA training, and strengthen crew understanding of COLREGs through simulation-based training. Further research is recommended to examine COLREGs implementation across different vessel types and shipping routes in Indonesian waters.
Co-Authors Adipradana, Arrizka Yanuar Anggina Elsa Ritonga ASLINA BR. GINTING Fauziah Lubis Hendro Wahyono Liza Fauzanti Sagala Lusi Febriani Marthen Marthen Muhammad Amin Sahrul Angga Saputra Tazkiya Asri Syam