Article Per Year (5 Year)
p-Index From 2020 - 2025
0.23
P-Index
This Author published in this journals
All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains JURNAL USM LAW REVIEW
Maradona Maradona
Unknown Affiliation
Engineering Social Sciences

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Pengaruh Kadar Sulfur Dan Plastisizer Paraffin Terhadap Morfologi Dan Sifat Karet Alam Thermoset Dengan Filler Abu Sawit/Carbon Black Maradona Maradona; Nirwana Nirwana; Bahruddin Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Sulfur and plasticizer has an important role in the manufacture of thermoset rubber. Plasticizer serves to increase the spread of filler in the elastic properties of rubber. While the function of sulfur during the vulcanization process. This research aims to study the effect of sulfur and paraffin plasticizers on the morphology and properties of thermoset rubber with palm ash /carbon black as filler. sufur content used were 1,5 phr 2,5 phr and 3 phr (per hundred rubber ). Plastisizer content used were 2,5 phr and 5 phr. Mastication process is carried out using a roll mill at room temperature, roll rotational speed of 20 rpm, and the overall time of the manufacture of compound ± 50 minutes. Activator used was ZnO, a co–activator used was stearic acid, an accelerator used was MBTS, antidegradant used was TMQ. Vulcanization process was carried out at a temperature of 150 °C and pressure of 50 kgf/cm2. Testing of mechanical properties includes tensile strength, elongation at break and elastic modulus using standard ISO 527-2 type 5A with a universal testing machine. Testing morphology was carried out using a scanning electron microscope (SEM). Other parameter tested is water absorption resistance. The results showed that the rate of sulfur and plasticizer influence the properties of vulcanized rubber. The best mechanical properties obtained at 2.5 phr sulfur and 2.5 phr plasticizer with filler ratio of palm ash /carbon black 30/70 with a tensile strength of 18.41 MPa, elongation at break 1155.9 % and elastic modulus of 0.9 MPa.                                     Keywords : sulfur , plasticizers , fillers hybrid , natural rubber , vulcanized
The Attorney General’s Discretion and the Constitutionalityof the Termination of Investigations in the Interest of State Revenue Guruh Wicahyo Prabowo; Wardana, Dodi Jaya; Toetik Rahayuningsih; Maradona Maradona
JURNAL USM LAW REVIEW Vol. 8 No. 3 (2025): DECEMBER (Article in Press)
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/julr.v8i3.12674

Abstract

This study examines the constitutionality and legal boundaries of the Attorney General’s discretion to terminate investigations in the interest of state revenue. The issue arises from the tension between fiscal policy objectives and the constitutional principles of legality, due process, and equality before the law. Using a normative juridical method with statutory, conceptual, and case approaches, the research analyzes the legal framework under Law No. 16 of 2004 as amended by Law No. 11 of 2021, the Criminal Procedure Code, and relevant jurisprudence. The findings indicate that while the Attorney General’s discretionary power to halt investigations can be justified to protect state finances, its implementation currently lacks clear statutory parameters, judicial oversight, and public transparency. This gap creates potential conflicts with constitutional guarantees and risks institutionalizing impunity. The study contributes novelty by constructing a constitutional framework for prosecutorial discretion that aligns fiscal interests with legal certainty and justice. It recommends legislative reform to establish explicit criteria, judicial review mechanisms, and accountability systems to ensure that the Attorney General’s discretion operates within the rule of law and upholds constitutional rights.
Co-Authors Bahruddin Dodi Jaya Wardana Guruh Wicahyo Prabowo Nirwana Nirwana Toetik Rahayuningsih