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All Journal Transmisi Jurnal Pemantik Journal BEARINGS: Borneo Mechanical Engineering and Science RING Mechanical Engineering Jurnal Teknik Mesin
Himawan, Citrakara Upendra S.K.
Teknik Mesin, Universitas Pawyatan Daha
Humanities Automotive Engineering Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering

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PELATIHAN PENGGUNAAN ZOTERO UNTUK MAHASISWA SEBAGAI BEKAL DALAM PENULISAN KARYA ILMIAH Citrakara Upendra Sneha Bandhana Kusuma Himawan; Alfian Hudan Laksan; Rizki Fillya
Jurnal Pemantik Vol. 2 No. 2 (2023): Juli - Desember
Publisher : Rafandha Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56587/pemantik.v2i2.57

Abstract

Indicators or references for scientific papers can be said to be good if they are avoided duplication or plagiarism elements. Plagiarism often occurs among students, especially in writing/compiling scientific works. Many students write citations in their scientific paper but do not include references in the reference list and vice versa. This phenomenon occurs because there are still many students who are not familiar with reference tools such as Zotero, End-note, etc. Based on this, this community service is carried out with the objectives: 1. providing an introduction to the importance of using reference tools to students in compiling scientific papers to reduce the percentage of plagiarism, and 2. showing how to get references to students. This community service is carried out through introduction (socialization) and online training with students of the Department of Mechanical Engineering, Faculty of Engineering, Pawyatan Daha University. This community service is carried out using lectures, discussions, and assignments to students to do installations, create accounts, and finally make citations and references. Community service activities have results showing that students can install and use Zotero in making citations and reference lists.
ANALISIS PENGARUH VARIASI KATUP TETAP RPM BERUBAH DAN VARIASI RPM TETAP KATUP BERUBAH PADA POMPA SERI, PARAREL, DAN TUNGGAL Citrakara Upendra Sneha Bhandana Himawan; Johan Wayan Dika; Agus Dwi Putra
RING ME Vol 3 No 1 (2023): RING Mechanical Engineering
Publisher : Universitas Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33474/rm.v3i1.20428

Abstract

A pump is a tool that functions to drain, circulate and move liquid fluids by applying pressure and speed from one place to another. On internal combustion engines, the purpose of testing is to determine the performance characteristics of internal combustion engines. This research can be used as teaching material and discussion by students in the fields of pumps, gasoline motors, and diesel motors. Each test with a different treatment will give a different outcome value. The result is that in the pump test, the output value is influenced by the treatment of the throttle and engine speed, whereas in the testing of diesel and gasoline engines the output value is affected by the treatment of the visor and throttle.
ANALISIS SIFAT KIMIA DAN DEKOMPOSISI TERMAL MODEL VYAZOVKIN SUTRA JAGUNG DENGAN PROSES PIROLISIS PADA LAJU PEMANASAN 40 O C/MENIT : ANALYSIS OF CHEMICAL PROPERTIES AND THERMAL DECOMPOSITION OF THE VYAZOVKIN MODEL OF CORN SILK BY PYROLYSIS PROCESS AT A HEATING RATE OF 40 O C/MINUTE Citrakara Upendra Sneha Bandhana Kusuma Himawan; Rahmad, Hadi; Mutiara Bahtiar, Ahmad Dony
Jurnal Teknik Mesin Vol. 1 No. 2 (2022): JURNAL TEKNIK MESIN
Publisher : Program Studi Teknik Mesin PSDKU Polinema Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jmeeg.v1i2.400

Abstract

Increasing levels of carbon dioxide (CO) in the atmosphere in highly populated countries is driving renewed interest in developing research and techniques to reduce global warming. The abundance of corn silk is a very important factor and needs to be considered when it comes to its utilization. Several studies have been conducted regarding the use of corn silk, namely as an ingredient for making low-fat, anti-obesity, anti-diabetic meatballs which are obtained from corn silk polysaccharides. However, the potential of corn silk as a raw material for fuel has not been studied. Therefore, it is important to conduct research to understand the potential of corn silk as a new and renewable energy source which is expected to become a long-term energy reserve. Thermogravimetric analysis of the characteristics and kinetics in the normal room temperature range of 900 oC under a nitrogen atmosphere at a heating rate of 40 oC/minute. The results show that the pyrolysis process of corn silk is divided into 3 stages related to the process of reducing the water content at a temperature of 65-130 °C, followed by the devolatilization stage at a temperature range of 216-506 oC and the last is a relatively slow decomposition up to 900 oC. The activation energy (Ea) in the active pyrolysis stage was calculated using the isoconventional fitting model using the Vyazovkin model. The resulting activation energy from the calculation of the Vyazovkin model is in the range of 215,522 kJ/mol each.
EFEK KATALITIK ZINC-OXIDE (ZNO) TERHADAP KINETIKA REAKSI PEMBAKARAN MATERIAL SAMPAH PADAT: THE CATALYTIC EFFECT OF ZINC-OXIDE (ZNO) ON THE KINETICS OF COMBUSTION REACTIONS OF SOLID WASTE MATERIALS Citrakara Upendra Sneha Bandhana Kusuma Himawan; Rahmad, Hadi; Laksana, Alfian Hudan
Jurnal Teknik Mesin Vol. 2 No. 1 (2023): JURNAL TEKNIK MESIN
Publisher : Program Studi Teknik Mesin PSDKU Polinema Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jmeeg.v2i1.1998

Abstract

This study aims to determine the catalytic effect of ZnO on the kinetics of the decomposition reaction of burning solid waste. ZnO catalyst was chosen because it has high mobility and reactivity. samples were prepared and randomly selected consisting of 12 types of inorganic waste and 10 types of organic waste. The research instrument uses (DTA) Differential Thermal Analysis proximate testing. From this test the data in the form of a mass decrease graph will be analyzed descriptively. The description of the data is displayed through the TG-DTG curve and the calculation of the activation energy (Ea) using the fitting model. the DTG curve identifies three peaks indicating the decomposition stages of the three components have different characteristics. The decomposed components are 1. lignocellulosic organic and low stability organic components, 2. Volatile substances from plastic components, 3. hydrocarbon residues and ash reformation. The combustion temperature increases in samples with high catalyst concentrations, but the burnout temperature decreases in samples with high catalyst concentrations. The DTA curve shows the increased reactivity of samples with high catalyst concentrations. Oxidative reactions which are exothermic/external heating increase in samples with high catalyst concentrations. The catalytic effect on the addition of zinc-oxide (ZnO) catalyst concentration to the components showed a decrease in the hydrocarbon component and an increase in the short chain hydrocarbon component. Increasing the concentration of zinc-oxide (ZnO) catalyst in the sample increases the activation energy. However, overall the addition of catalyst concentration in the combustion of organic-inorganic solid waste samples was able to reduce the activation energy at the end of the combustion reaction
Isoconversional Analysis of Corn Silk Thermal Decomposition Fitting Model by Pyrolysis Process Himawan, Citrakara Upendra Sneha Bandhana Kusuma
TRANSMISI Vol 18, No 2 (2022): September 2022
Publisher : Universitas Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jtmt.v18i2.9234

Abstract

The pyrolysis characteristics and kinetics of corn silk were studied through thermogravimetric analysis in the normal room temperature range of -900 oC under a nitrogen atmosphere at heating rates of 20, 30 and 40 oC/minute. The results show that the pyrolysis process of corn silk is divided into three stages which can be associated with the process of dehydration or loss of water at a temperature of 65-150 oC, followed by a second stage, namely the main devolatilization at a temperature range of 225-525 oC and the final stage, namely slow decomposition up to 900 oC. The activation energy in the active pyrolysis stage was calculated using the Arrhenius fitting model and the isoconventional model using the Flynn-Wall Ozawa model and the Vyazovkin model. The resulting activation energies from the Arrhenius calculations are in the range of 195-215 kJ/mol and Ea using the Flynn-Wall Ozawa and Vyazovkin free model calculations of 195,355 and 215,522 kJ/mol, respectively.
Pengaruh Penggunaan Jenis Coolant Jumbo, Megacools dan Hikari terhadap Efektivitas Pendinginan Mesin Nissan Livina 1800cc Basir, Aang Abdul; Laksana, Alfian Hudan; Himawan, Citrakara Upendra S.K.; Prasetya, Yanto Budi; Pranata, Bintang
Journal BEARINGS: Borneo Mechanical Engineering and Science Vol 4, No 1 (2025)
Publisher : Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/bearings.v4i1.6725

Abstract

This study aims to analyze the influence of using Jumbo, Megacools, and Hikari coolant types on the cooling effectiveness of Nissan Livina 1800cc engine. The research method used is experimental by testing the three types of coolant under the same engine operating conditions, comparing radiator effectiveness parameters based on differences in engine rotation time and RPM variations. Data collection was conducted systematically at standardized time intervals and engine rotations to obtain accurate and reliable results. The research findings indicate that Jumbo coolant type provides the highest cooling effectiveness compared to the other two coolant types. Based on the analysis of differences in engine rotation time, Jumbo coolant recorded radiator effectiveness of 0.234 at 30 seconds. The radiator effectiveness of Jumbo coolant also increased along with the increase in engine rotation, with the highest value of 0.246 recorded at 2200 RPM. Overall analysis shows that Jumbo coolant has the highest overall radiator effectiveness with an average value of 0.216. These findings indicate that the selection of coolant type significantly affects the performance of the engine cooling system, with Jumbo coolant as the optimal choice for improving cooling effectiveness in Nissan Livina 1800cc engines.
Co-Authors Agus Dwi Putra Alfian Hudan Laksan Basir, Aang Abdul Johan Wayan Dika Laksana, Alfian Hudan Mutiara Bahtiar, Ahmad Dony Pranata, Bintang Prasetya, Yanto Budi Rahmad, Hadi Rizki Fillya